Beryllium. An element with the atomic symbol Be, atomic number 4, and atomic weight 9.01218. Short exposure to this element can lead to a type of poisoning known as BERYLLIOSIS.
A form of pneumoconiosis caused by inhaled rare metal BERYLLIUM or its soluble salts which are used in a wide variety of industry including alloys, ceramics, radiographic equipment, and vacuum tubes. Berylliosis is characterized by an acute inflammatory reaction in the upper airway leading to BRONCHIOLITIS; PULMONARY EDEMA; and pneumonia.
Transmembrane proteins that form the beta subunits of the HLA-DP antigens.
A group of the D-related HLA antigens (human) found to differ from the DR antigens in genetic locus and therefore inheritance. These antigens are polymorphic glycoproteins comprising alpha and beta chains and are found on lymphoid and other cells, often associated with certain diseases.
Inorganic salts of hydrofluoric acid, HF, in which the fluorine atom is in the -1 oxidation state. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed) Sodium and stannous salts are commonly used in dentifrices.
Air pollutants found in the work area. They are usually produced by the specific nature of the occupation.
Inorganic compounds that contain aluminum as an integral part of the molecule.
The exposure to potentially harmful chemical, physical, or biological agents that occurs as a result of one's occupation.
The science, art, or technology dealing with processes involved in the separation of metals from their ores, the technique of making or compounding the alloys, the techniques of working or heat-treating metals, and the mining of metals. It includes industrial metallurgy as well as metallurgical techniques employed in the preparation and working of metals used in dentistry, with special reference to orthodontic and prosthodontic appliances. (From Jablonski, Dictionary of Dentistry, 1992, p494)
Radioactive substances which act as pollutants. They include chemicals whose radiation is released via radioactive waste, nuclear accidents, fallout from nuclear explosions, and the like.
The branch of mathematics dealing with the purely logical properties of probability. Its theorems underlie most statistical methods. (Last, A Dictionary of Epidemiology, 2d ed)
A mixture of metallic elements or compounds with other metallic or metalloid elements in varying proportions.
Diseases which have one or more of the following characteristics: they are permanent, leave residual disability, are caused by nonreversible pathological alteration, require special training of the patient for rehabilitation, or may be expected to require a long period of supervision, observation, or care. (Dictionary of Health Services Management, 2d ed)
Nitric acid (HNO3). A colorless liquid that is used in the manufacture of inorganic and organic nitrates and nitro compounds for fertilizers, dye intermediates, explosives, and many different organic chemicals. Continued exposure to vapor may cause chronic bronchitis; chemical pneumonitis may occur. (From Merck Index, 11th ed)
Uncontrolled release of a chemical from its containment that either threatens to, or does, cause exposure to a chemical hazard. Such an incident may occur accidentally or deliberately.
Works containing information articles on subjects in every field of knowledge, usually arranged in alphabetical order, or a similar work limited to a special field or subject. (From The ALA Glossary of Library and Information Science, 1983)
An institute of the CENTERS FOR DISEASE CONTROL AND PREVENTION which is responsible for assuring safe and healthful working conditions and for developing standards of safety and health. Research activities are carried out pertinent to these goals.
Elements, compounds, mixtures, or solutions that are considered severely harmful to human health and the environment. They include substances that are toxic, corrosive, flammable, or explosive.
Metals that constitute the group 2 (formerly group IIa) of the periodic table.
Substances that comprise all matter. Each element is made up of atoms that are identical in number of electrons and protons and in nuclear charge, but may differ in mass or number of neutrons.
A trace element that constitutes about 27.6% of the earth's crust in the form of SILICON DIOXIDE. It does not occur free in nature. Silicon has the atomic symbol Si, atomic number 14, and atomic weight [28.084; 28.086].
The structural parts of the VIRION.
Substances made up of an aggregation of small particles, as that obtained by grinding or trituration of a solid drug. In pharmacy it is a form in which substances are administered. (From Dorland, 28th ed)
The study, control, and application of the conduction of ELECTRICITY through gases or vacuum, or through semiconducting or conducting materials. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
Persons including soldiers involved with the armed forces.
Products made by baking or firing nonmetallic minerals (clay and similar materials). In making dental restorations or parts of restorations the material is fused porcelain. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed & Boucher's Clinical Dental Terminology, 4th ed)
The practice of medicine as applied to special circumstances associated with military operations.
Inorganic compounds that contain silicon as an integral part of the molecule.
Coating with a metal or alloy by electrolysis.
Small holes of nanometer dimensions in a membrane, that can be used as single molecule detectors. The pores can be biological or synthetic.
The use of HIGH-ENERGY SHOCK WAVES, in the frequency range of 20-60 kHz, to cut through or remove tissue. The tissue fragmentation by ultrasonic surgical instruments is caused by mechanical effects not heat as with HIGH-INTENSITY FOCUSED ULTRASOUND ABLATION.
The practice of medicine concerned with conditions affecting the health of individuals associated with the marine environment.
Conferences, conventions or formal meetings usually attended by delegates representing a special field of interest.
The level of governmental organization and function at the national or country-wide level.
Pain in the breast generally classified as cyclical (associated with menstrual periods), or noncyclical, i.e. originating from the breast or nearby muscles or joints, ranging from minor discomfort to severely incapacitating.
Eating an excess amount of food in a short period of time, as seen in the disorder of BULIMIA NERVOSA. It is caused by an abnormal craving for food, or insatiable hunger also known as "ox hunger".
Facilities equipped to carry out investigative procedures.
A constituent organization of the DEPARTMENT OF HEALTH AND HUMAN SERVICES concerned with protecting and improving the health of the nation.
Health care professionals, technicians, and assistants staffing LABORATORIES in research or health care facilities.
A vocabulary database of universal identifiers for laboratory and clinical test results. Its purpose is to facilitate the exchange and pooling of results for clinical care, outcomes management, and research. It is produced by the Regenstrief Institute. (LOINC and RELMA [Internet]. Indianapolis: The Regenstrief Institute; c1995-2001 [cited 2002 Apr 2]. Available from http://www.regenstrief.org/loinc)
Information systems, usually computer-assisted, designed to store, manipulate, and retrieve information for planning, organizing, directing, and controlling administrative and clinical activities associated with the provision and utilization of clinical laboratory services.
It is a form of protection provided by law. In the United States this protection is granted to authors of original works of authorship, including literary, dramatic, musical, artistic, and certain other intellectual works. This protection is available to both published and unpublished works. (from Circular of the United States Copyright Office, 6/30/2008)
The terms, expressions, designations, or symbols used in a particular science, discipline, or specialized subject area.
A specified list of terms with a fixed and unalterable meaning, and from which a selection is made when CATALOGING; ABSTRACTING AND INDEXING; or searching BOOKS; JOURNALS AS TOPIC; and other documents. The control is intended to avoid the scattering of related subjects under different headings (SUBJECT HEADINGS). The list may be altered or extended only by the publisher or issuing agency. (From Harrod's Librarians' Glossary, 7th ed, p163)
Sequential operating programs and data which instruct the functioning of a digital computer.
Alloys that contain a high percentage of gold. They are used in restorative or prosthetic dentistry.
Specific alloys not less than 85% chromium and nickel or cobalt, with traces of either nickel or cobalt, molybdenum, and other substances. They are used in partial dentures, orthopedic implants, etc.
The fusion of ceramics (porcelain) to an alloy of two or more metals for use in restorative and prosthodontic dentistry. Examples of metal alloys employed include cobalt-chromium, gold-palladium, gold-platinum-palladium, and nickel-based alloys.
A dark-gray, metallic element of widespread distribution but occurring in small amounts; atomic number, 22; atomic weight, 47.90; symbol, Ti; specific gravity, 4.5; used for fixation of fractures. (Dorland, 28th ed)
The process of producing a form or impression made of metal or plaster using a mold.
The testing of materials and devices, especially those used for PROSTHESES AND IMPLANTS; SUTURES; TISSUE ADHESIVES; etc., for hardness, strength, durability, safety, efficacy, and biocompatibility.

Mechanism of interaction of Acanthamoeba actophorin (ADF/Cofilin) with actin filaments. (1/202)

We characterized the interaction of Acanthamoeba actophorin, a member of ADF/cofilin family, with filaments of amoeba and rabbit skeletal muscle actin. The affinity is about 10 times higher for muscle actin filaments (Kd = 0.5 microM) than amoeba actin filaments (Kd = 5 microM) even though the affinity for muscle and amoeba Mg-ADP-actin monomers (Kd = 0.1 microM) is the same (Blanchoin, L., and Pollard, T. D. (1998) J. Biol. Chem. 273, 25106-25111). Actophorin binds slowly (k+ = 0.03 microM-1 s-1) to and dissociates from amoeba actin filaments in a simple bimolecular reaction, but binding to muscle actin filaments is cooperative. Actophorin severs filaments in a concentration-dependent fashion. Phosphate or BeF3 bound to ADP-actin filaments inhibit actophorin binding. Actophorin increases the rate of phosphate release from actin filaments more than 10-fold. The time course of the interaction of actophorin with filaments measured by quenching of the fluorescence of pyrenyl-actin or fluorescence anisotropy of rhodamine-actophorin is complicated, because severing, depolymerization, and repolymerization follows binding. The 50-fold higher affinity of actophorin for Mg-ADP-actin monomers (Kd = 0.1 microM) than ADP-actin filaments provides the thermodynamic basis for driving disassembly of filaments that have hydrolyzed ATP and dissociated gamma-phosphate.  (+info)

Exposure of cultured murine peritoneal macrophages to low concentrations of beryllium induces increases in intracellular calcium concentrations and stimulates DNA synthesis. (2/202)

Exposure of humans to beryllium dusts can induce a specific form of chronic pneumonitis that consists mainly of noncaseating granulomas in the lungs. Multiple studies have documented both genetic and immune components of chronic berylliosis. Much work has focused on T cells and their reactivity in berylliosis, but less work has focused on the end effector cells in granulomatous inflammation, macrophages. Because macrophages must become activated to form granulomas, and they become activated by responding to numerous immunomodulatory signals, we investigated the effects of beryllium (BeCl2) on a central signal transduction pathway in macrophages, increases in intracellular calcium ([Ca2+]i). Exposure of cultured murine peritoneal macrophages to low, nontoxic concentrations induced successive spikes or oscillations in [Ca2+]i. Concentrations as low as 5 nM induced significant increases in [Ca2+]i. The source of the increased [Ca2+]i was exclusively extracellular in that increases in [Ca2+]i could be completely blocked by chelating extracellular Ca2+, were inhibited by the Ca2+ channel blocker verapamil, and exposure of macrophages to BeCl2 had no effect on IP3 concentrations. DNA synthesis, a Ca2+-sensitive function, was enhanced in dividing 1LN cells and induced de novo in quiescent macrophages. Furthermore, BeCl2 enhanced DNA synthesis in the absence of coexposure to the protein kinase C activator phorbol myristate acetate. These data support the hypothesis that beryllium toxicity is in part the result of altered Ca2+ metabolism in mononuclear phagocytes consequent to reversible opening of plasma membrane channels.  (+info)

Identification of pathogenic T cells in patients with beryllium-induced lung disease. (3/202)

Chronic beryllium disease (CBD) is caused by beryllium exposure and is characterized by granulomatous inflammation with accumulation of CD4+ T cells in the lung. We analyzed TCR beta-chain and alpha-chain genes expressed by these CD4+ T cells. In the lungs of individual patients, as well as among four of five CBD patients studied, different oligoclonal expansions within the Vbeta3 subset were found to express homologous or even identical CDR3 amino acid sequences. These related expansions were specific for CBD patients, were compartmentalized to lung, and persisted at high frequency in patients with active disease. Limiting dilution cloning and analysis of coexpressed TCR alpha-chain genes confirmed that these TCRs were selectively expanded by a common Ag involving beryllium. Overall, homologous TCR beta- and alpha-chains showed identical V regions and invariant charged residues within the CDR3 but considerable variability in TCRJ usage. Remarkably, CBD patients expressing nearly identical TCRs did not share common HLA-DRB1 or DQ alleles. These results implicate particular CD4+ cells in the pathogenesis of CBD and provide insight into how beryllium is recognized in human disease.  (+info)

Partial IL-10 inhibition of the cell-mediated immune response in chronic beryllium disease. (4/202)

Chronic beryllium disease (CBD) provides a human disorder in which to study the delayed type IV hypersensitivity response to persistent Ag that leads to noncaseating pulmonary granuloma formation. We hypothesized that, in CBD, failure of IL-10 to modulate the beryllium-specific, cell-mediated immune response would result in persistent, maximal cytokine production and T lymphocyte proliferation, thus contributing to the development of granulomatous lung disease. To test this hypothesis, we used bronchoalveolar lavage cells from control and CBD subjects to evaluate the beryllium salt-specific production of endogenous IL-10 and the effects of exogenous human rIL-10 (rhIL-10) on HLA expression, on the production of IL-2, IFN-gamma, and TNF-alpha, and on T lymphocyte proliferation. Our data demonstrate that beryllium-stimulated bronchoalveolar lavage cells produce IL-10, and the neutralization of endogenous IL-10 does not increase significantly cytokine production, HLA expression, or T lymphocyte proliferation. Second, the addition of excess exogenous rhIL-10 partially inhibited the beryllium-stimulated production of IL-2, IFN-gamma, and TNF-alpha; however, we measured no change in T lymphocyte proliferation or in the percentage of alveolar macrophages expressing HLA-DP. Interestingly, beryllium salts interfered with an IL-10-stimulated decrease in the percentage of alveolar macrophages expressing HLA-DR. We conclude that, in the CBD-derived, beryllium-stimulated cell-mediated immune response, low levels of endogenous IL-10 have no appreciable effect; exogenous rhIL-10 has a limited effect on cytokine production and no effect on T lymphocyte proliferation or HLA expression.  (+info)

Chronic beryllium disease and cancer risk estimates with uncertainty for beryllium released to the air from the Rocky Flats Plant. (5/202)

Beryllium was released into the air from routine operations and three accidental fires at the Rocky Flats Plant (RFP) in Colorado from 1958 to 1989. We evaluated environmental monitoring data and developed estimates of airborne concentrations and their uncertainties and calculated lifetime cancer risks and risks of chronic beryllium disease to hypothetical receptors. This article discusses exposure-response relationships for lung cancer and chronic beryllium disease. We assigned a distribution to cancer slope factor values based on the relative risk estimates from an occupational epidemiologic study used by the U.S. Environmental Protection Agency (EPA) to determine the slope factors. We used the regional atmospheric transport code for Hanford emission tracking atmospheric transport model for exposure calculations because it is particularly well suited for long-term annual-average dispersion estimates and it incorporates spatially varying meteorologic and environmental parameters. We accounted for model prediction uncertainty by using several multiplicative stochastic correction factors that accounted for uncertainty in the dispersion estimate, the meteorology, deposition, and plume depletion. We used Monte Carlo techniques to propagate model prediction uncertainty through to the final risk calculations. We developed nine exposure scenarios of hypothetical but typical residents of the RFP area to consider the lifestyle, time spent outdoors, location, age, and sex of people who may have been exposed. We determined geometric mean incremental lifetime cancer incidence risk estimates for beryllium inhalation for each scenario. The risk estimates were < 10(-6). Predicted air concentrations were well below the current reference concentration derived by the EPA for beryllium sensitization.  (+info)

Characterization of the hinges of the effector loop in the reaction pathway of the activation of ras-proteins. Kinetics of binding of beryllium trifluoride to V29G and I36G mutants of Ha-ras-p21. (6/202)

This work experimentally confirms the pathway of activation of Ha-ras-p21, which was calculated by the method of Targeted Molecular Dynamics (TMD) (Diaz JF, Wroblowski B, Schlitter J, Engelborghs Y, 1997a, Proteins Struct Funct Genet 28:434-451). The process can be studied experimentally by analyzing the binding of BeF3- to the GDP complex of the active fluorescent mutant Y32W (Diaz JF, Sillen A, Engelborghs Y, 1997b, J Biol Chem 227:23138-23143). Two mutants, V29G and 136G, have been constructed at both sides of the effector loop of the active fluorescent mutant. This was done to check the proposed reaction pathway and to provide further insight into the mechanism of the activation of ras proteins. Both mutations accelerate the conformational isomerization with two orders of magnitude, demonstrating convincingly the role of these residues as hinges of the effector loop in one or more of the transitions of the conformational change. These results provide experimental support to the pathway calculated by TMD analysis.  (+info)

Aluminum fluoride inhibition of cabbage phospholipase D by a phosphate-mimicking mechanism. (7/202)

Aluminum fluoride (AlF(4)(-)) inhibited phospholipase D (PLD) purified from cabbage in both PIP(2)-dependent and PIP(2)-independent assays, consistent with its previously observed effect on mammalian PLD. The possibility that AlF(4)(-) may exert this effect through its known phosphate-mimicking property was examined. Inorganic phosphate, as well as two phosphate analogs, beryllium fluoride and orthovanadate, also inhibited cabbage PLD. Enzyme kinetic studies confirmed that PLD followed Hill kinetics, characteristic for allosteric enzymes, with an apparent Hill coefficient (n(app)) of 3.8, indicating positive cooperativity among multiple substrate-binding sites and suggesting possible functional oligomerization of the enzyme. AlF(4)(-) modification of PLD kinetics was consistent with a competitive mode of enzyme inhibition. It is therefore proposed that AlF(4)(-), and other phosphate analogs, inhibits plant PLD by competing with a substrate phosphate group for a substrate-binding site, thereby preventing the formation of an enzyme-phosphatidyl intermediate. This may be a conserved feature of PLD superfamily enzymes.  (+info)

Theoretical studies of metal-phosphate interactions: interaction of Li+, Na+, K+, Be++, Mg++, and Ca++ with H2PO4- and (CH3O)2PO2-: implications for nucleic acid solvation. (8/202)

Model phosphate-metal solvation complexes have been studied by ab-initio self-consistent-field techniques. The complexes studied include (RO)2PO2-(R = H or CH3) with Li+, Na+, K+, Be++, Mg++, Ca++, H2O, and Cl-. The geometries of the complexes were chosen to approximate reasonable model solvation complexes for phosphate groups in a nucleic acid environment. Calculated energies of formation vary as Be++ greater than Mg++ greater than Ca++ greater than Li+ greater than Na+ greater than K+ for all isostructural complexes, consistent with experimental binding trends. These results suggest that site binding of this type can successfully account for the relative specificities of ion binding in polynucleotides and other phosphate-containing molecules.  (+info)

Beryllium can be harmful if it is inhaled, depending on how much beryllium one inhales and how long the exposure lasts. If beryllium air levels are high enough (greater than 1000 µg/m3), an acute condition can result. This condition resembles pneumonia and is called acute beryllium disease.[6]. Individuals who are sensitive to beryllium can develop an inflammatory reaction in the respiratory system. This is called chronic beryllium disease (CBD), and can occur many years after exposure to higher than normal levels of beryllium (greater than 0.5 µg/m3). This disease can make you feel weak and tired, and can cause difficulty in breathing. It can also result in anorexia, weight loss, and may also lead to right side heart enlargement and heart disease in advanced cases. Some people who are sensitized to beryllium may not have any symptoms. The general population is unlikely to develop acute or chronic beryllium disease because ambient air levels of beryllium are normally very low ...
Objective: Tumor necrosis factor-alpha (TNF-alpha) is a potent cytokine involved in normal immune functions. The aim of this study was to investigate if there is an association between chronic beryllium disease or beryllium sensitization and two variants of the TAT-a gene located at -308 and -238 called TNF-alpha-308*02 and TNF-alpha-238*02. Methods: TNF-alpha-308 and TNF-alpha-238 genotyping was
Beryllium nitrate, also known as beryllium dinitrate, is an ionic beryllium salt of nitric acid with the chemical formula Be(NO3)2. Each formula unit is composed of one Be2+ cation and two NO3− anions. Beryllium nitrate is a toxic chemical, like all other beryllium compounds. It is also an irritant in small doses. When burned, it gives off irritating or toxic fumes. However, when massive short-term exposure occurs, acute pneumonitis can set in, but symptoms do not manifest themselves for 3 days. Beryllium nitrate can be prepared by reacting beryllium hydroxide in nitric acid. s NIOSH Pocket Guide to Chemical Hazards #0054. National Institute for Occupational Safety and Health (NIOSH). Beryllium Nitrate (ICSC). IPCS INCHEM. Retrieved 13 September 2010. Walsh, Kenneth (2009). Beryllium chemistry and processing. ASM International. pp. 121-122. ISBN 978-0-87170-721-5. Retrieved 3 January 2011 ...
The Occupational Safety and Health Administration (OSHA) recently issued a final rule modifying a 40-year-old standard pertaining to exposure to beryllium and beryllium compounds. It contains new requirements for general, construction and shipyard industries. Similar to the recent changes to crystalline silica regulations, the rule is anticipated to save lives and protect workers from serious illnesses. Beryllium and beryllium compounds are lightweight, extremely strong metals used in the aerospace, electrical, energy, telecommunications, medical and defense fields. Beryllium-copper alloys are frequently used for their electrical and thermal conductivity as well as their hardness. Beryllium oxide is used as a component in ceramics for electronics and other electrical equipment because of its heat conductivity, high strength, hardness and electrical insulating properties. Unfortunately, beryllium is highly toxic when inhaled. Inhaling airborne beryllium can result in a lung condition known as ...
Chronic Beryllium Disease (CBD) primarily affects the lungs. CBD may occur among dental laboratory technicians when they inhale dust containing beryllium when working on items such as dental crowns, bridges, and partial denture frameworks made from dental alloys containing beryllium. CBD may develop within months after initial exposure to beryllium or may have a very slow onset and not develop until years after exposure to beryllium has occurred. The amount or length of exposure to beryllium necessary to cause a specific individual to develop CBD is not known, but recent information suggests that even short exposures (weeks or months) to levels of beryllium below OSHAs PEL of 2 μg/m3 averaged over an 8-hour day may lead to CBD in some workers (Source: OSHA). ...
People working or living near beryllium industries have the greatest potential for exposure to beryllium. Lung damage has been observed in people exposed to high levels of beryllium in the air. About 1-15% of all people occupationally-exposed to beryllium in air become sensitive to beryllium and may develop chronic beryllium disease (CBD), an irreversible and sometimes fatal scarring of the lungs. CBD may be completely asymptomatic or begin with coughing, chest pain, shortness of breath, weakness, and/or fatigue. Beryllium has been found in at least 535 of the 1,613 National Priorities List sites identified by the Environmental Protection Agency (EPA).
Occupational exposure to beryllium may cause Chronic Beryllium Disease (CBD), a lung disorder initiated by an electrostatic interaction with the MHC class II human leukocyte antigen (HLA). Molecular studies have found a significant correlation between the electrostatic potential at the HLA-DP surface and disease susceptibility. CBD can therefore be treated by chelation therapy. In this work, we studied the effect of two complexing agents, nitrilotriproprionic acid (NTP) and 4,5-dihydroxy-1,3-benzene disulphonate (Tiron), on the fractionation of beryllium in human serum analysed by graphite furnace atomic absorption spectrometry (GFAAS). We found the average serum beryllium concentration of fourteen non-exposed individuals to be 0.53 (± 0.14) μg l-1, with 21 (± 3)% of the beryllium mass bound to the low molecular weight fraction (LMW), and 79 (± 3)% bound to the high molecular weight fraction (HMW). The addition of Tiron increased the beryllium mass in the HMW fraction, while NTP was not seen to have
Exposure to beryllium can occur when cutting, torching, or welding of the materials listed above. Employees who torch or weld these materials run the greatest risk of exposure. Workers are primarily exposed to beryllium by breathing in dusts, fumes, or mists containing beryllium. Beryllium compounds can also get on the skin, contaminate clothing or food, and be ingested.. Employers must assess employee exposures to beryllium. That includes determining if material being received at the recycling facility contains beryllium. If it does then the employer must determine if dust, fumes, or mists are being created in the processing of the beryllium scrap. This can be done by monitoring employees and areas for in a manner similar to monitoring for other hazardous metals such as lead or cadmium.. Employers must establish and maintain a regulated area if employees are, or can reasonably be expected to be, exposed to airborne beryllium at levels above the listed TWA PEL or STEL in that work area. ...
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Beryllium is a crucial metal in the automotive, aviation, nuclear and consumer industries. The unique combination of high rigidity, low density, thermal stability and conductivity makes it highly useful in consumer products such as cell phones and computers. However, beryllium is considered to be the most toxic non-radioactive element, a class A carcinogen, and the cause oflife-threatening chronic beryllium disease. Even with its poor reputation, its use is continued in commercial, industrial, and governmental applications. In contrast, the efforts to understand berylliums fundamental chemistry have been severely neglected. We are interested in developing a suite of chemical chelators which show strong and selective binding towards beryllium. These studies will lead to specific applications such as the detection of beryllium in the environment, protocols to remediate its contamination, and therapies for individuals exposed to its toxicity. This work will focus on both the computational studies ...
Federal Register Volume 84, Number 189 (Monday, September 30, 2019)] [Rules and Regulations] [Pages 51377-51400] From the Federal Register Online via the Government Publishing Office [www.gpo.gov] [FR Doc No: 2019-21037] ======================================================================= ----------------------------------------------------------------------- DEPARTMENT OF LABOR Occupational Safety and Health Administration 29 CFR Parts 1915 and 1926 [Docket No. OSHA-H005C-2006-0870] RIN 1218-AD21 Occupational Exposure to Beryllium and Beryllium Compounds in Construction and Shipyard Sectors AGENCY: Occupational Safety and Health Administration (OSHA), Labor. ACTION: Final rule. ----------------------------------------------------------------------- SUMMARY: OSHA is finalizing the proposed rule on occupational exposure to beryllium and beryllium compounds in construction and shipyards by delaying the compliance deadlines for nearly all provisions of the standards to September 30, 2020. The ...
Chronic beryllium disease (CBD) appeared to be waning 30 yrs ago 1. In 1980, less than one case per year was reported and the incidence rate per ton of beryllium produced had declined from between five and 10, to less than 0.001. CBD appeared to be heading toward the medical archives as a success story of environmental control in the absence of understanding of the pathogenesis of the disease. However, in 1982, an immunological test performed on lymphocytes recovered from the bronchoalveolar lavage fluid demonstrated a marked increased in the number of beryllium-sensitive cells in the lung compared to the blood, strongly suggesting that CBD was a hypersensitivity to beryllium 2. The findings of that initial study were confirmed in larger studies 3 and by different investigators 4, 5. Around 10 yrs later, an immunological test (the beryllium lymphocyte proliferation test (BeLPT)) was initially used in cross-sectional studies and later in the surveillance and screening of current and former ...
Synopsis of Global Beryllium Copper Market 2017 Research Report. The report about Global Beryllium Copper Market 2017 constitutes of pervasive fundamental research along with a structured analysis of qualitative as well as quantitative facet by assorted industry connoisseurs and main opinion leaders to gain a profound insight of the market and industry performance.. The report Global Beryllium Copper Market 2017 gives a clear sight of the present-day market scenario which comprises of historical and estimated forthcoming market size on the basis of technological growth, value and volume, prominent economic and governing elements in the market.. Do Inquiry Before Accessing Global Beryllium Copper Market 2017 Report at: https://market.biz/report/global-beryllium-copper-market-icrw/83388/#inquiry. The report Global Beryllium Copper Market 2017 further imparts detail information about approaches and tactics used by elite key players in the Beryllium Copper industry. It also gives an extensive ...
To investigate the effects of short-term exposure of beryllium on the human immune system, the proportion of T-lymphocytes such as CD3+, CD4+, CD8+, CD95, and NK cells, andthe proportion of B cells and TNFα level in peripheral blood and immunoglobulins in the serum of 43 exposed workers and 34 healthy control subjects were studied. External exposure to beryllium was measured by atomic absorption spectrometer as recommended by the NIOSH analytical method 7300. T lymphocyte subpopulation analysis was carried out with flow cytometer. The working duration of exposed workers was less than 3 months and the mean ambient beryllium level was 3.4 μg/m(3), 112.3 μg/m(3), and 2.3 μg/m(3) in molding (furnace), deforming (grinding), and sorting processes, respectively (cited from Kim et al., 2008). However, ambient beryllium level after process change was non-detectable (| 0.1 μg/m(3)). The number of T lymphocytes and the amount of immunoglobulins in the beryllium-exposed workers and control subjects were not
DOE describes Hanford as the worlds largest environmental remediation project. In addition to the remnants of nine plutonium reactors, Hanford holds 4.6 million pounds of irradiated uranium fuel rods and 53 million gallons of radioactive waste buried in underground tanks, some of which have leaked into the groundwater and are moving toward the Columbia River. Radiation has long been the dean of hazards at nuclear cleanup sites, but in April 2009, the Hanford Advisory Board, a group chartered by DOE that includes current and former Hanford workers, medical specialists, environmental and worker-safety advocates, and local government officials, wrote a letter advising the department that from a worker safety perspective ... beryllium currently rates as a greater hazard than radiation. The letter included a disquieting calculation: Studies have found that between 2 percent and 6 percent of people exposed to beryllium will become sensitized or develop CBD. At the time of the letter, 115 of 4,583 ...
We read with great interest the Letter to the Editor by Newman and colleagues(1) in response to our article entitled Industries in the United States with Airborne Beryllium Exposure and Estimates of the Number of Current Workers Potentially Exposed.(2) We commend the authors of the letter for raising a number of issues that, while clearly beyond the scope of our article, are relevant to the heal
PITTSBURGH, June 23, 2017 - The United Steelworkers (USW) today blasted the Administrations proposal to cancel important protections for shipyard and construction workers exposed to beryllium. Under the proposal OSHA released this morning, employers would no longer have to measure beryllium levels in the workplace or provide medical testing to workers at risk of fatal lung disease. In addition, workers would not have the right to wear protective clothing or to shower at the end of the work shift, making it possible for beryllium to be taken home and exposed to spouses and children. Beryllium is a highly useful metal, but it can cause a crippling and sometimes fatal disease that ultimately robs sufferers of the ability to breathe. OSHA issued new beryllium standards in January covering workers in all industries. Todays proposal eliminates most of the provisions covering the maritime and construction industries. The USW has members in both industries, including workers at the Newport News ...
The first problem was one I was handed sort of on a silver platter when I went to the Mass General Hospital in Boston. I was in the department of medicine at Harvard was located at Mass General Hospital in the Huntington laboratories. The Chief of the laboratory, Dr. Joseph Aub who is a world known physician told me about beryllium and the fact that beryllium was causing very severe illness in women who were working in factories to remove the phosphors from inside fluorescent lamp bulbs. They wanted to retrieve the phosphors. One of the key ingredients in the phosphor was beryllium, the metal beryllium. Its the lightest metal with an atomic weight of 9.I think thats right. Its long time ago.. It caused some interesting effects that the scientists have studied, mainly if injected into rabbits it caused bad bone tumors. If it was injected into-well, these women who were scrubbing out the tubes died, almost all of them of severe pulmonary disease as a result of breathing in the beryllium. So he ...
Summary of lung function and beryllium exposure of case 2. (A) Results of pulmonary function tests before, during, and after acute work-related illness. (B) TWA
Schubauer-Berigan MK, Deddens JA, Couch JR, Petersen MR. Risk of lung cancer associated with quantitative beryllium exposure metrics within an occupational cohort. Occup Environ Med. 2011; 68(5): 354-60 ...
United States Beryllium Aluminum Alloy Industry 2016 Market Research Report is a new market research publication announced by Reportstack. This report is a professional and in-depth study on the current state of the Beryllium Aluminum Alloy industry.. The report provides a basic overview of the industry including definitions, classifications, applications and industry chain structure. The Beryllium Aluminum Alloy market analysis is provided for the United States markets including development trends, competitive landscape analysis, and key regions development status.. Development policies and plans are discussed as well as manufacturing processes and Bill of Materials cost structures are also analyzed. This report also states import/export consumption, supply and demand Figures, cost, price, revenue and gross margins.. To access full report with TOC, please visit United States Beryllium Aluminum Alloy Industry 2016 Market Research Report. The report focuses on United States major leading industry ...
Press Release issued Jul 21, 2017: The purpose of Global Beryllium Oxide (BeO) Powder Market report is to provide the newest industry data and Beryllium Oxide (BeO) Powder industry future trends, allowing consumers to identify the Beryllium Oxide (BeO) Powder market Application, Type, Manufacturers and Regions, Beryllium Oxide (BeO) Powder market Forecast up to 2022.
We report the formation of beryllium doped plasma polymerized coatings derived from a helical resonator deposition apparatus, using diethylberyllium as the organometaric source. These coatings had an appearance not unlike plain plasma polymer and were relatively stable to ambient exposure. The coatings were characterized by Inductively Coupled Plasma Mass Spectrometry and X-Ray Photoelectron Spectroscopy. Coating rates approaching 0.7 {mu}m hr{sup {minus}1} were obtained with a beryllium-to-carbon ratio of 1:1.3. There is also a significant oxygen presence in the coating as well which is attributed to oxidation upon exposure of the coating to air. The XPS data show only one peak for beryllium with the preponderance of the XPS data suggesting that the beryllium exists as BeO. Diethylberyllium was found to be inadequate as a source for beryllium doped plasma polymer, due to thermal decomposition and low vapor recovery rates.
Beryllium (chemical symbol Be) is an alkaline earth metallic element, that has no known function in any organism. Unfortunately beryllium is very poisonous, manifesting as chronic beryllium lung disease, which causes premature mortality in one th...
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Analytical techniques have been developed for the determination of carbon in high-purity beryllium. The method, a modification of the combustion-conductometric technique, permits an increase in the sample size of about four times, thereby achieving a fourfold reduction in the lower limit of useful analytical results. Sensitivity has been demonstrated for carbon contents as low as 25 ppm. The accuracy of a solution distillation technique for determination of nitrogen in high-purity beryllium has been established. A modified micro-Kjeldahl still was employed. Nitrogen contents less than 10 ppm can be accurately determined. Three batches of beryllium weighing roughly 5 pounds each have been prepared. Each batch was attritioned, sized and blended to provide a homogeneous material for analytical standards. These standards, in the form of coarse chips, have the following carbon and nitrogen contents for the 3 standards in parts per million, respectively: carbon, 25, 101, and 120 and nitrogen, 11, 55,
Periodic Audio Beryllium In-Ear Headphones OverviewThe Periodic Audio Beryllium In-Ear Headphones are the new flagship in-ear monitors from Periodi...
Read chapter 5 Assessment of Other Health End Points: Beryllium is an important metal that is used in a number of industries-including the defense, aer...
Read chapter Front Matter: Beryllium is an important metal that is used in a number of industries-including the defense, aerospace, automotive, medical...
Los Alamos National Laboratory announced Wednesday it is notifying nearly 2,000 current and former employees and visitors that they may have been exposed to beryllium in the lab and may be at risk of disease.
On January 9, 2017, OSHA published a final rule amending its standards for occupational exposure to beryllium and beryllium compounds. United States Employment and HR Arnold & Porter 26 Jan 2017
The question of whether the federal government has been at fault for the deaths and injuries of American beryllium workers will be the subject of a formal investigation by the General Accounting Office, the investigative arm of Congress.. The order to GAO to study the hazards of beryllium, a metal used by the Department of Defense and the Department of Energy because of its light weight and strength in the manufacture of weapons, came from a bipartisan group of eight members of Congress.. Led by Sen. Mike DeWine (R., O.), the ad hoc coalition includes Sens. John McCain (R., Ariz.) and Robert Bennett (R., Utah); and Reps. Marcy Kaptur (D., Toledo), Chris Shays (R., Conn.), Jim Kolbe (R., Ariz.), Tim Holden (D., Pa.), and Paul Kanjorski (D., Pa.).. Mr. DeWine began the call for a GAO investigation in April and has since been organizing and collecting support from colleagues. He said his actions were sparked by a series in The Blade that detailed a decades-long pattern of the U.S. government ...
Beryllium Copper - This high strength (after heat treatment) copper alloy can contain 0.5 to 3% beryllium and sometimes other alloying elements. It has excellent metal working, forming and machining characteristics, is also non-magnetic and non ...
Beryllium coatings with varying thicknesses and columnar grain sizes were deposited by low temperature magnetron sputtering and wet chemically etched to enhance diffuse absorption of light. After etching these coatings exhibited a matte black surface finish and low specular reflectance (below 2%) in the IR up to a critical wavelength dependent upon the original grain size of the coating. Extremely thick coatings (350 µm) with original grain sizes of 10 to 12 µm were produced which exhibited specular reflectances below 0.5% up to 50 µm wavelength and a Lambertian BRDF at 10.6 µm averaging 4.3x10-3 ster-1. Scanning electron micrographs are presented for etched and unetched beryllium coatings which showed the etching process produces roughness and porosity over several size scales simultaneously with the maximum size scale limited by the initial coating grain size and thickness. This technique for producing diffuse absorbing baffle materials has great versatility in choice of coating material and
With an atomic number of 4, beryllium has four electrons: two electron shells surround the atoms nucleus and two electrons in each shell. Beryllium is a rigid metal with an atomic mass of 9.0122. It...
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The extraction of beryllium has been carried out in the presence of butyric acid. Of the solvents tried, viz., ether, benzene, chloroform, amyl acetate, ethyl acetate and carbon tetrachloride, chloroform is found to be the best, ethyl acetate being the next. 30.7 mg of BeO in solution as chloride is raised to a pH of 9.3 to 9.5 to which 10-15 ml of butyric acid is added. Four extractions with chloroform extract 99% of beryllium. ...
Methods Quantitative area- and breathing-zone-based exposure measurements of airborne beryllium were made between 1953 and 2006 and used by plant personnel to estimate daily weighted average (DWA) exposure concentrations for sampled departments and operations. These DWA measurements were used to create a JEM with 18 exposure metrics, which was linked to the plant cohort consisting of 18 568 unique job, department and year combinations. The exposure metrics ranged from quantitative metrics (annual arithmetic/geometric average DWA exposures, maximum DWA and peak exposures) to descriptive qualitative metrics (chemical beryllium species and physical form) to qualitative assignment of exposure to other risk factors (yes/no). Twelve collapsed job titles with long-term consistent industrial hygiene samples were evaluated using regression analysis for time trends in DWA estimates. ...
On May 12, 2018, OSHA will begin to enforce a new rule on beryllium exposure in all forms, compounds, and mixtures in general, construction, and shipyard industries, prompting employers to take further responsibility to protect worker health from beryllium-related diseases.
Ending decades of denial and inaction, the federal government has issued a tough new exposure standard for people who work with the toxic metal beryllium.
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LORAIN -- A city councilwoman who fought for more than a year to ban a controversial substance within city limits said she now can rest easier. A representative from Brush Wellman Inc. signed a voluntary agreement with the city on Wednesday, stating that the companys bronze engineering plant in the Lorain would not produce, store or manufacture beryllium.. Beryllium, a compound used as an alloy with other metals in the defense, electronics and automotive industry, has been known to cause chronic and fatal lung disease if its dust is inhaled during its manufacturing process.. State and federal laws regulate the production of beryllium. But the compound earned a reputation locally at the former Brush Beryllium plant on West First Street in Lorain during the 1930s and 40s. Several workers there and residents living near the plant at the time became ill and died, according to a study completed in 1944.. City Councilwoman Kathy Tavenner, D-at large, had fought for the past 15 months to get Council ...
Beryllium copper springs are cold rolled and may be mill hardened before fabrication. Good corrosion resistance and electrical conductivity.
Products by element - Beryllium, include metal, alloy, compounds and fabrication products like sputtering targets etc. from ALB Materials Inc. - Page Total 1 Page 5 Records
This invention recognizes the hazards of beryllium and beryllium oxide in automotive applications and offers alternative material solutions. In particular, commercial electrochromic mirrors use beryllium comprising alloys for busbars and may also use beryllium oxide for the electronics used to power and control these mirrors. Further, this can be combined by reducing other known hazards such as mercury, cadmium, lead and antimony compounds.
QUEBEC CITY, QUEBEC--(Marketwire - March 31, 2010) - Nemaska Exploration Inc. («Nemaska» or «the Corporation») (TSX VENTURE:NMX) is pleased to announce that the most recent results from its current drill program on its lithium/beryllium (Whabouchi project, 100 % owned) continues to prove the high-grade, impressive width and continuity of the mineralized zone. Nemaska has received an additional 1,057 results from 15 holes. The latest results include 52.3 m at 1.85% Li2O, 165 ppm Be and 1579 ppm Rb and 22.8 m at 1.91 % Li2O, 130 ppm Be and 1503 ppm Rb.. «I am very pleased with the grade and width of our drill results to date which favourably compare to any other spodumene bearing pegmatite project currently in development around the world», commented Mr. Guy Bourassa, President and CEO. «The current drilling should be completed by mid-April, allowing us to finalize the resource calculation presently underway. I am also pleased to see that the Be and Rb grades remain constant throughout the ...
Beryllium dating is used to estimate the time a rock has been exposed on the surface of the Earth, as well as erosion and sedimentation rates.. Beryllium-10 is another cosmogenic nuclide. Like carbon-14, most of it is formed in the earths upper atmosphere. After formation, beryllium-10 binds to atmospheric dust particles or dissolves in atmospheric water vapor. It is transported to earth surface in rain so consequently it has a much shorter atmospheric residence time than carbon-14. It accumulates on the earths surface and depending upon the sedimentation regime in the local environment, it can be used to date surface accumulation rates, surface erosion rates, or for dating layers within ice cores. Its half-life is 1.39 million years.. Vanishingly small amounts of beryllium-10, carbon-14 and aluminum-26 are also created at the earths surface. The creation occurs within minerals the upper meter of rocks exposed directly to the sky. If rocks are undisturbed for millennia, differences in the ...
Unfortunately no cure has been found yet; but treatment and management of chronic beryllium disease can slow down the progression of this disease.
Information on the respiratory infections beryllium sensitization and chronic beryllium disease (CBD) and their symptoms, causes, diagnosis, and treatment.
Chronic beryllium disease (CBD) can be caused when one is exposed to fumes, dust, powder containing beryllium and has an allergic reaction. Most people ...
Click to launch & play an online audio visual presentation by Prof. Lee Newman on Genetic susceptibility in granulomatous disorders: chronic beryllium disease and sarcoidosis, part of a collection of multimedia lectures.
In seven patients with chronic beryllium disease (Be) the Be lymphocyte transformation test was positive in 100%, independent of steroid therapy, and was reproducible. The Be macrophage migration inhibition test was only positive in four of seven patients (57%) not on steroids, and was not reproducible. In 72 potentially exposed healthy beryllium workers the lymphocyte transformation test was negative in all subjects. The macrophage test was positive in four of 78 and again the results were not reproducible. The workers with positive results showed no differences in age, type or duration of employment from those with negative results and showed no evidence of disease. In addition, the macrophage test was positive in two of 45 non-exposed control subjects. We also confirmed the above advantages of the lymphocyte transformation technique by using tuberculin antigen (PPD). The PPD lymphocyte transformation test gave positive results in approximately 60% of healthy beryllium workers, but the PPD ...
Inhalation of beryllium (Be) has been associated with 2 pulmonary syndromes, which are an acute chemical pneumonitis and a granulomatous lung disease known as chronic beryllium disease (CBD), or berylliosis. In acute beryllium disease, the metal acts as a direct chemical irritant, causing a nonspecific inflammatory reaction (acute chemical p...
Inhalation of beryllium (Be) has been associated with 2 pulmonary syndromes, which are an acute chemical pneumonitis and a granulomatous lung disease known as chronic beryllium disease (CBD), or berylliosis. In acute beryllium disease, the metal acts as a direct chemical irritant, causing a nonspecific inflammatory reaction (acute chemical p...
Sigma-Aldrich offers abstracts and full-text articles by [Gina M Clayton, Yang Wang, Frances Crawford, Andrey Novikov, Brian T Wimberly, Jeffrey S Kieft, Michael T Falta, Natalie A Bowerman, Philippa Marrack, Andrew P Fontenot, Shaodong Dai, John W Kappler].
Federal Register Volume 83, Number 88 (Monday, May 7, 2018)] [Rules and Regulations] [Pages 19936-19949] From the Federal Register Online via the Government Publishing Office [www.gpo.gov] [FR Doc No: 2018-09306] ======================================================================= ----------------------------------------------------------------------- DEPARTMENT OF LABOR Occupational Safety and Health Administration 29 CFR Part 1910 [Docket No. OSHA-2018-0003] RIN 1218-AB76 Revising the Beryllium Standard for General Industry AGENCY: Occupational Safety and Health Administration (OSHA), Department of Labor. ACTION: Direct final rule; request for comment. ----------------------------------------------------------------------- SUMMARY: On January 9, 2017, the Occupational Safety and Health Administration (OSHA) issued a final rule adopting a comprehensive general industry standard for exposure to beryllium and beryllium compounds. In this Direct Final Rule (DFR), OSHA is adopting a number of ...
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On December 12, 2017, Pennsylvanias Environmental Quality Board (EQB) unanimously approved a final-omitted rulemaking to substantially increase the Act 2 cleanup standards for beryllium, cadmium, and aldrin. The Act 2 cleanup standards are risk-based, meaning they are calculated according to the methods described in 25 Pa. Code Chapter 250 using the best-available toxicological data to be protective of human health under a variety of exposure scenarios. The standards must be periodically revised as newer and more accurate toxicological information becomes available, and the last such revision occurred in August 2016.. This currently proposed revision is intended to correct errors that were discovered in the 2016 cleanup standards for three substances: aldrin, beryllium, and cadmium. The original and corrected cleanup standards are presented in the table below.. ...
Beryllium is used mostly for military applications,[55] but there are other uses of beryllium, as well. In electronics, beryllium is used as a p-type dopant in some semiconductors,[56] and beryllium oxide is used as a high-strength electrical insulator and heat conductor.[57] Due to its light weight and other properties, beryllium is also used in mechanics when stiffness, light weight, and dimensional stability are required at wide temperature ranges.[58][59] Magnesium has many uses. It offers advantages over other materials such as aluminium, although this usage has fallen out of favor due to magnesiums flammability.[60] Magnesium is also often alloyed with aluminium or zinc to form materials with more desirable properties than any pure metal.[61] Magnesium has many other uses in industrial applications, such as having a role in the production of iron and steel, and the production of titanium.[62] Calcium also has many uses. One of its uses is as a reducing agent in the separation of other ...
A white powder; hexagonal; BeO. Used in the preparation of beryllium compounds and in ceramics and refractories. Melting point, 2,570 degrees C; and sp gr, 3.02. Bodies high in BeO have extremely high thermal conductivity (in the range of metals) and also possess high mechanical strength. Used in nuclear reactors because of its refractoriness, high thermal conductivity, and ability to act as a moderator for fast neutrons, reducing them to thermal speeds. Beryllia ceramics are used for electronic components and for crucibles for melting uranium and thorium. Syn: bromellite Source: Dictionary of Mining, Mineral, and Related Terms
Description: Alloy, or metallic composition which additionally contains at least one of the metals beryllium, magnesium, calcium, strontium, or barium ...
TY - JOUR. T1 - Beryllium analyses by secondary ion mass spectrometry. AU - Hervig, Richard. PY - 2002. Y1 - 2002. UR - http://www.scopus.com/inward/record.url?scp=33846351986&partnerID=8YFLogxK. UR - http://www.scopus.com/inward/citedby.url?scp=33846351986&partnerID=8YFLogxK. M3 - Article. AN - SCOPUS:33846351986. VL - 50. JO - Reviews in Mineralogy and Geochemistry. JF - Reviews in Mineralogy and Geochemistry. SN - 1529-6466. ER - ...
Page contains details about beryllium zinc oxide nanorods . It has composition images, properties, Characterization methods, synthesis, applications and reference articles : nano.nature.com
The LPP Fusion research team is still working with the tungsten electrodes but they know the beryllium electrodes will be needed soon. Tungsten is being used
Compare Beryllium vs Silicon of the Periodic Table on all their Facts, Electronic Configuration, Chemical, Physical, Atomic properties. Our Periodic Element comparison tool allows you to compare Periodic Elements properties side by side for all 118 elements | SchoolMyKids Interactive Dynamic Periodic Table, Periodic Table Element Comparison tool, Element Property trends
Luciano Jacques Moraes; Beryllium minerals in Brazil. Economic Geology ; 28 (3): 289-292. doi: https://doi.org/10.2113/gsecongeo.28.3.289. Download citation file:. ...
Typically, we like to end the annual The Year in U.S. Occupational Health & Safety on an uplifting note. But this time around - to be honest - that was a hard sell. Take a quick look through the 2017 yearbook and youll quickly glean that worker health and safety is very much at risk under the new administration and from lawmakers in the states. From the attempted rollback of a new federal beryllium exposure standard to state efforts to weaken workers compensation systems, the view from 2017 does not seem terribly promising. On the other hand, the fight for workers rights has never… ...
Beso Beach provides the kind of beach bar vibes most people dream of when planning a Mediterranean escape, with a gentle breeze and laidback lounge music that picks up the pace as the sun drops into the ocean on her nightly descent. The palm lined roof, natural materials and weathered feel lends a rustic charm to the place, with stunning sunset views on the A-lists favourite beach, Illetes.. The chefs at Beso Beach offer the best of Mediterranean and Basque cuisine that has guests licking their lips in delight, safe in the knowledge there are no additives or sweeteners; simply the best food and raw flavours on the island. Carles Abellan is the Catalan cook and visionary who started working at El Bulli for 15 days and stayed for 15 years, among other notable positions. After 6pm you can try Yango Urban Foods on the beach - some of his taste sensations include international style hot dogs with unique flavours, before the a la carte menu returns for dinner.. ...
To study the immunologic function of bursin, we analyzed the effects of anti-bursin monoclonal antibody (mAb) on the immunosuppression in ducks (Cherry Valley duck) by injecting various doses of the anti-bursin mAb into 13-d duck embryos. After hatch, cell-mediated immune activity and humoral responses were studied using lymphocyte proliferation test, tube agglutination test, and indirect enzyme-linked immuno-sorbent assay to detect anti-Escherichia coli antibodies and antibodies to Riemerella anatipester, respectively. Simultaneously, relative weights (BW-adjusted) of bursa of Fabricius (BF), spleen, and thymus were determined. Additionally, the morphology of BF, spleen, and thymus was examined at various ages using conventional histology. Follicle morphology of BF was analyzed by image analysis. The results indicated that anti-bursin mAb markedly decreased duck lymphocyte proliferation, the antibody-producing ability to bacteria, as well as the relative BF weight. Moreover, the anti-bursin mAb ...
Some new tests have been introduced, unfortunately there are no published studies demonstating their validity. One test is called an immune tolerance test. It measures T cell proliferation after exposure to select Lyme antigens. There exist very few studies regarding such lymphocyte proliferation tests for diagnosing Lyme. Oddly, the background paper published by the manufacturer, describing the underpinnings of this technology, cites an old Wormser study in the foot notes. The Wormser study using somewhat different methods concluded the test was insensitive but specific ...
Today, Tuesday , May 17, 2016, the Rocky Flats Downwinders launched their health survey for people who reside downwind of Rocky Flats and may have health problems due to exposure to plutonium and other toxins released from Rocky Flats. See the following Denver Post article: http://www.thedenverchannel.com/lifestyle/health/residents-who-lived-near-rocky-flats-from-1952-and-1992-to-be-surveyed-about-health
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The Occupational Safety and Health Administration (OSHA) proposes to amend its existing exposure limits for occupational exposure in general industry…
Researchers at International Business Machines Corp. have developed a new approach for simulating molecules on a quantum computer.. The breakthrough, outlined in a research paper to be published in the scientific journal Nature Thursday, uses a technique that could eventually allow quantum computers to solve difficult problems in chemistry and electro-magnetism that cannot be solved by even the most powerful supercomputers today.. In the experiments described in the paper, IBM researchers used a quantum computer to derive the lowest energy state of a molecule of beryllium hydride. Knowing the energy state of a molecule is a key to understanding chemical reactions.. In the case of beryllium hydride, a supercomputer can solve this problem, but the standard techniques for doing so cannot be used for large molecules because the number of variables exceeds the computational power of even these machines.. The IBM researchers created a new algorithm specifically designed to take advantage of the ...
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SPEAKER INDEX CONTENTS INSERTS ACCEPTANCE 143 ACTION ON CLAIM 80 ACTION ON CLAIMS 18 ACTION ON CLIAM 48 ADDITIONAL CRITERIA 94 136 181 223 ADDITIONAL INFORMATION 168 226 ADDITIONAL INFORMATION AND DOCUMENTATION 81 ADMINISTRATIVE APPEALS PROCEDURE AND JUDICIAL REVIE 51 82 ADMINISTRATIVE COSTS NOT PAID FROM FUND 18 ADMINISTRATIVE LAW JUDGE 127 215 ADMINISTRATIVE PROCEEDINGS 147 AMOUNT 108 195 APOLOGY 13 APPLICABILITY OF OTHER FEDERAL LAWS 164 APPLICABLE LAW 148 APPLICATION 102 110 126 189 197 213 APPLICATION OF SECTION 133 221 APPLICATION OF TITLE 107 194 APPLICATION TO EXISTING ASBESTOS TRUSTS 164 ARBITRARY OR CAPRICIOUS CONDUCT 108 195 ASBESTOS CLAIM 156 ASBESTOS COMPENSATION FUND 138 ASBESTOS TRUST 157 AUTHORITY 45 78 118 154 206 AUTHORITY OF BENEFITS REVIEW BOARD 106 192 AUTHORIZATION OF APPROPRIATIONS 14 45 77 AVAILABILITY OF THE FUND 14 AVERAGE ANNUAL EARNINGS 98 122 185 209 AWARD OF FEES 132 219 BAIRD 74 BERKLEY 254 BERYLLIUM INDUSTRY SITE 20 BERYLLIUM VENDOR 54 177 BIGGERT 21 BOARD ...
One of the first identified age-associated functional changes in immune response was decreased DTH responses. In fact the DTH response is an example of a T.h response mediated primarily through th-1-type cytokines although many events are required before proliferation, assessment of lymphocyte proliferation often has been used as an indicator of ...
Learn more about Berylliosis at Reston Hospital Center DefinitionCausesRisk FactorsSymptomsDiagnosisTreatmentPreventionrevision ...
Learn more about Berylliosis at Reston Hospital Center DefinitionCausesRisk FactorsSymptomsDiagnosisTreatmentPreventionrevision ...
Includes alphabet are there any alternatives to plenty fish books, counting books, and books teaching concepts. If the internet settings are not set to medium level than the cookies will be blocked. The rinsing stage contaminates where to meet international singles in the usa the cleaning fluid with residual liquid and the cleaning fluid becomes more contaminated each time the cloth or sponge is rinsed. The commercial use of beryllium requires the use of appropriate dust control equipment and industrial controls at all times because of the toxicity of inhaled beryllium-containing dusts that can cause a chronic life-threatening allergic disease in some people called berylliosis. Exquisitely prepared breakfast, with vegan and gluten free options. Where to meet black singles in canada free to further validate these results, we treated the cells with laser microirradiation. Thomas married sarah browne born clarke in, at age 24 at marriage place. Split shot rig this is about as basic as you can get ...
We are looking to build at either Candelas or Leyden Rock. I am concerned regarding Rocky Flats and 470. Any thoughts on future resale in either area? Find answers to this and many other questions on Trulia Voices, a community for you to find and share local information. Get answers, and share your insights and experience.
Learn Novo Nordisks manufacturing facilities in Clayton & Durham, NC, including our filling and finishing facility (DFP) and our active pharmaceutical ingredient manufacturing facility (DAPI).
HANOI, VIETNAM, Aug 02, 2021 (News Direct via Comtex) -- --News Direct-- HANOI, VIETNAM - Media OutReach - 2 August 2021 - Supported by the Vietnamese Government and Health Ministry, Vingroup (hose:VIC) and Arcturus Therapeutics Holdings Inc. announced a contract regarding a collaboration to establish a manufacturing facility in Vietnam for the manufacture of Arcturus mRNA COVID-19 vaccine candidate for sales and use in Vietnam. With a planned capacity of up to 200 million doses per year, Vingroup is expected to produce its first batches of the COVID-19 vaccine in early 2022. /zigman2/quotes/202272083/composite ARCT -7.04% Arcturus Therapeutics is a leading clinical stage company focused on messenger RNA (mRNA) medicines - one of the most advanced medicinal technologies in the world. Under the terms of the arrangement, VinBioCare - a member of Vingroup - will, with consultation from Arcturus, build out a manufacturing facility in Vietnam; and Arcturus will provide to VinBioCare access to ...
Title page], pp. i-ii. Foreword, Norman, Lindsay D. pp. iii ff.. Acknowledgments, Schreck, Albert E. pp. v ff.. Contents, pp. vii-viii. Mining and quarrying trends in the metal and nonmetal industries, Cooper, Franklin D. pp. 1-26. Abrasive materials, Baskin, G. David pp. 27-41 ff.. Aluminum, Kurtz, Horace F.; Moore, Christine M. pp. 43-61 ff.. Antimony, Rowland, T. John, Jr.; Cammarota, V. A., Jr. pp. 63-70. Asbestos, Clifton, R. A. pp. 71-84. Barite, Morse, David E. pp. 85-94. Bauxite and alumina, Baumgardner, Luke H.; Hough, Ruth A. pp. 95-110. Beryllium, Petkof, Benjamin pp. 111-114. Bismuth, Carlin, James F., Jr.; Bascle, Robert J. pp. 115-118. Boron, Absalom, Sandra T. pp. 119-129 ff.. Bromine, Absalom, Sandra T. pp. 131-137 ff.. Cadmium, Lucas, John M. pp. 139-145 ff.. Calcium and calcium compounds, Pressler, J. W. pp. 147-151 ff.. Cement, Dikeou, James T. pp. 153-191 ff.. Chromium, Matthews, Norman A.; Morning, John L. pp. 193-205 ff.. Clays, Ampian, Sarkis G. pp. 207-247 ff.. Cobalt, ...
This specification covers a copper beryllium alloy in the form of bars and rods. These products have been used typically for parts requiring a combination of high strength, wear resistance, and corrosion resistance and where thermal conductivity, electrical conductivity, and low magnetic susceptibility may be important, but usage is not limited to such applications. ...
PURPOSE OF REVIEW: This study aims to summarize the current body of literature on the relationship between various toxic metals exposures (i.e., aluminum, antimony, arsenic, beryllium, cadmium, chromium, lead, manganese, and nickel) and autism spectrum disorder (ASD), with a focus on potential sex differences in these associations. RECENT FINDINGS: Sex differences in ASD diagnosis and mutagenic effects of toxic exposures indicate that sex differences may play a major part in the causal relationship of any potential associations seen; however, we were only able to find three studies that reported on sex differences in observed associations with toxic metals exposure and ASD ...
Multi-element Calibration Standard 3, Matrix per Volume: 5% HNO3 per 125 mL, Concentration of Element: 10mg/mL Silver, 10mg/mL Aluminium, 10mg/mL Arsenic, 10mg/mL Barium, 10mg/mL Beryllium, 10mg/mL Bismuth, 10mg/mL Calcium, 10mg/mL Cadmium, 10mg/mL Cobalt, 10mg/mL Chromium, 10mg/mL Cesium, 10mg/mL Copper, 10mg/mL Iron, 10mg/mL Gallium, 10mg/mL Mercury, 10mg/mL Indium, 10mg/mL Potassium, 10mg/mL Lithium, 10mg/mL Magnesium, 10mg/mL Manganese, 10mg/mL Sodium, 10mg/mL Nickel, 10mg/mL Lead, 10mg/mL Rubidium, 10mg/mL Selenium, 10mg/mL Strontium, 10mg/mL Thallium, 10mg/mL Vanadium, 10mg/mL Uranium, and 10mg/mL Zinc. Mercury is supplied as a separate solution due to incompatibility with other elements.
Sodium chloride is heavily used, so even relatively minor applications can consume massive quantities. In oil and gas exploration, salt is an important component of drilling fluids in well drilling. It is used to flocculate and increase the density of the drilling fluid to overcome high downwell gas pressures. Whenever a drill hits a salt formation, salt is added to the drilling fluid to saturate the solution and to minimize the dissolution within the salt stratum.[11] Salt is also used to increase the curing of concrete in cemented casings.[9]. In textiles and dyeing, salt is used as a brine rinse to separate organic contaminants, to promote salting out of dyestuff precipitates, and to blend with concentrated dyes to standardize them. One of its main roles is to provide the positive ion charge to promote the absorption of negatively charged ions of dyes.[9]. It is also used in processing aluminium, beryllium, copper, steel and vanadium. In the pulp and paper industry, salt is used to bleach ...
Sodium chloride is heavily used, so even relatively minor applications can consume massive quantities. In oil and gas exploration, salt is an important component of drilling fluids in well drilling. It is used to flocculate and increase the density of the drilling fluid to overcome high downwell gas pressures. Whenever a drill hits a salt formation, salt is added to the drilling fluid to saturate the solution in order to minimize the dissolution within the salt stratum.[8] Salt is also used to increase the curing of concrete in cemented casings.[9]. In textiles and dyeing, salt is used as a brine rinse to separate organic contaminants, to promote salting out of dyestuff precipitates, and to blend with concentrated dyes to standardize[clarification needed] them. One of its main roles is to provide the positive ion charge to promote the absorption of negatively charged ions of dyes.[9]. It is also used in processing aluminium, beryllium, copper, steel and vanadium. In the pulp and paper ...
And thats not all Trump has done in his first months in office to dismantle worker protections at the behest of big businesses. He has also delayed implementation of OSHAs newest chemical exposure limits - for silica dust and beryllium. These rules took decades to finalize and will save hundreds of lives a year once they are in effect. But every time they get delayed, workers are left in harms way for no good reason, increasing the chance theyll develop debilitating, often fatal diseases that will devastate their families. Not only is the fate of these rules unknown, new safeguards to address other hazards like heat stress, toxic chemicals, and workplace violence seem exceedingly unlikely from the Trump administration, putting even more lives in danger. Trump has proposed cutting the Department of Labors budget by 21 percent, making it practically impossible for OSHA to carry out its basic tasks like conducting inspections and citing employers for violating worker health and safety ...
Background: Dental technicians (DTs) are exposed to Beryllium (Be) and other substances capable of inducing lung disease. Heme oxygenase -1 (HO-1) play a protective antioxidant role in the lung. The guanine-thymidine (GT) n repeats in the HO-1 promoter determine HO-1 induction level. Short (GT) n repeats (n = ,25; S genotype) is considered as protective since HO-1 is induced more rapidly than in long (GT) n repeats (n = ≥25; L genotype).. Aims To evaluate the correlation of HO-1 polymorphisms to functional and exposure parameters in DTs and the protective role of HO-1 on Be Oxide (BeO) exposed A549 epithelial cells apoptosis.. Methods 65 DTs were followed-up for 2 years by questionnaires,induced sputum (IS) particles size distribution laser analysis (Dapi 2000 Donner Tech and Pulmonary Function Tests. HO-1 genotyping was done by PCR DNA sequencer (AB prism 310). A549 epithelial cell line was cultured with BeO and pretreated with Hemin and Znpp (for stimulation and inhibition of HO-1 ...
Lecture GuideCHM 110General Chemistry, CHM 110You will be responsible for learning the names and symbols of the following elements. Al Aluminum Sb Antimony Ar Argon As Arsenic Ba Barium Be Beryllium Bi Bismuth B Boron Br Bromine Cd Cadmium Cs Cesium Ca...
Beryllium[edit]. The first stable subvalent Be complex ever observed contains a three-center two-electron bond π-bond that ...
Beryllium 1798 N. Vauquelin 1828 F. Wöhler and A. Bussy Vauquelin discovered the oxide in beryl and emerald, and Klaproth ... "04 Beryllium". Elements.vanderkrogt.net. Retrieved 2008-09-12.. *^ "23 Vanadium". Elements.vanderkrogt.net. Retrieved 2008-09- ... "Ueber das Beryllium und Yttrium". Annalen der Physik. 89 (8): 577-582. Bibcode:1828AnP....89..577W. doi:10.1002/andp. ...
Beryllium. 1.85. 1560. 2742 Carbon. 2.267. -[III][9]. 4000[III][9] Nitrogen. 0.0012506. 63.15. 77.36 ...
Toxicity excludes the choice of beryllium.[53] (Pure beryllium is also brittle.) Thus, aluminium is usually the metal of choice ...
Beryllium. trace additive toxic Traces of bismuth and beryllium together with tin or zinc in aluminium-based braze destabilize ... Beryllium and bismuth at similar levels help disrupt the passivation layer of aluminium oxide and promote wetting. Carbon at ... Traces of bismuth and beryllium together with tin or zinc in aluminium-based braze destabilize oxide film on aluminium, ... Traces of bismuth and beryllium together with tin or zinc in aluminium-based braze destabilize oxide film on aluminium, ...
beryllium 4 Be boron 5 B carbon 6 C nitrogen 7 N ...
Beryllium Be " Boron B 2.4 mg/l 1.0 mg/L " " 5.00 mg/L ...
Beryl-lium4Be​9.0122 Boron5B​10.81 Carbon6C​12.011 Nitro-gen7N​14.007 Oxy-gen8O​15.999 Fluor-ine9F​18.998 Neon10Ne​20.180 ...
Beryllium. 6992360000000000000♠3.6×10−8. 6992450000000000000♠4.5×10−8. No. toxic in higher amounts. 2 ...
The beryllium hydroxide from either method then produces beryllium fluoride and beryllium chloride through a somewhat long ... In electronics, beryllium is used as a p-type dopant in some semiconductors,[56] and beryllium oxide is used as a high-strength ... Beryllium-7, beryllium-10, and calcium-41 are trace radioisotopes; calcium-48 and barium-130 have very long half-lives and thus ... Beryllium is an exception: It does not react with water or steam, and its halides are covalent. If beryllium did form compounds ...
As noted, heat capacity values far lower than 3 R "per atom" (as is the case with diamond and beryllium) result from "freezing ... Large exceptions at the lower end involve solids composed of relatively low-mass, tightly bonded atoms, such as beryllium at ... such as beryllium (where the value is only of 66% of 3 R), or diamond (where it is only 24% of 3 R). These large departures are ... beryllium metal or diamond). Polyatomic gases store intermediate amounts of energy, giving them a "per-atom" heat capacity that ...
Beryllium hydroxide Solid Be(OH)2 −902.9999 Beryllium oxide Solid BeO −609.4(25) ...
CS1 maint: discouraged parameter (link) Collantine, Keith (8 February 2007). "Banned! - Beryllium". F1 Fanatic. Retrieved 11 ... use of beryllium alloys in chassis or engine construction banned. Fully-automatic transmissions and launch control are also ...
Beryllium is used mostly for military applications, but there are other uses of beryllium, as well. In electronics, beryllium ... The beryllium hydroxide from either method then produces beryllium fluoride and beryllium chloride through a somewhat long ... Beryllium is an exception: It does not react with water or steam, and its halides are covalent. If beryllium did form compounds ... Even the compound beryllium fluoride, which is the most ionic beryllium compound, has a low melting point and a low electrical ...
"Beryllium". Royal Society of Chemistry. Retrieved 1 January 2020. "Yttrium". Royal Society of Chemistry. Retrieved 1 January ... In 1828 Wöhler was the first to isolate the element beryllium in pure metallic form (also independently isolated by Antoine ... He achieved these preparations by heating the anhydrous chlorides of beryllium and yttrium with potassium metal. In 1850, ... being the first to isolate the chemical elements beryllium and yttrium in pure metallic form. He was the first to prepare ...
Beryllium". Proc. Roy. Soc. A. 140: 277-301. "Library and Archive Catalogue". The Royal Society. Retrieved 18 October 2010. " ... He investigated the excitation potentials of lithium and beryllium, and published the results several years later. This ...
Beryllium • Bioaccumulation • Biomagnification • Chlorofluorocarbons (CFCs) • Cyanide • DDT • Endocrine disruptors • Explosives ...
Beryllium hydride. Left (gas phase): BeH2. covalent metal hydride. Right: (BeH2)n (solid phase). polymeric metal hydride. ...
... and beryllium) form amphoteric oxides or hydroxides. Amphoterism depends on the oxidation states of the oxide. Al2O3 is an ...
Beryllium oxide. Filler in some thermal interface materials such as thermal grease used on heatsinks for CPUs and power ... Electronic scrap components, such as CPUs, contain potentially harmful components such as lead, cadmium, beryllium, or ... Air emissions and discharge into rivers of glass dust, tin, lead, brominated dioxin, beryllium cadmium, and mercury. ... Occupational exposures associated with lung cancer, other common adverse health effects are beryllium sensitization, chronic ...
Beryllium hydride. Left (gas phase): BeH2. covalent metal hydride. Right: (BeH2)n (solid phase). polymeric metal hydride. ...
Beryllium hydride. Left (gas phase): BeH2. covalent metal hydride. Right: (BeH2)n (solid phase). polymeric metal hydride. ...
... includes ... acetaldehyde; antimony compounds; arsenic; benzene; beryllium compounds; bis(2-ethylhexyl)phthalate ...
The mineral industry of Mozambique plays a significant role in the world's production of aluminium, beryllium, and tantalum. In ... 2006, Mozambique's share of the world's tantalum mine output amounted to 6%; beryllium, 5%; and aluminium, 2%. Other ...
"04 Beryllium". Elements.vanderkrogt.net. Retrieved 2008-09-12. "41 Niobium". Elements.vanderkrogt.net. Retrieved 2008-09-12. " ... ISBN 0-8306-3018-X. Wöhler, Friedrich (1828). "Ueber das Beryllium und Yttrium". Annalen der Physik. 89 (8): 577-582. Bibcode: ...
4 Be beryllium use. 2742 K. 2469 °C. 4476 °F WebEl. 2742 K. 2469 °C. 4476 °F ...
The only lighter metals are the metals of groups 1 and 2, which apart from beryllium and magnesium are too reactive for ... Puchta, Ralph (2011). "A brighter beryllium". Nature Chemistry. 3 (5): 416. Bibcode:2011NatCh...3..416P. doi:10.1038/nchem.1033 ... this behaviour is similar to that of beryllium (Be2+), an example of a diagonal relationship.[26] However, unlike all other ... structural use (and beryllium is very toxic).[22] Aluminium is not as strong or stiff as steel, but the low density makes up ...
The single exception is beryllium which is even-numbered but has only one stable isotope. See Even and odd atomic nuclei for ... The only lighter metals are the metals of groups 1 and 2, which apart from beryllium and magnesium are too reactive for ... ISBN 978-953-51-0014-0. Lide 2004, p. 4-3. Puchta, Ralph (2011). "A brighter beryllium". Nature Chemistry. 3 (5): 416. Bibcode: ... this behavior is similar to that of beryllium (Be2+), and the two display an example of a diagonal relationship. The underlying ...
In some quantitative studies of beryllium, boron and mercury minerals, there are no new minerals during the Great Oxidation ... Cycles of melting concentrated rare elements such as lithium, beryllium, boron, niobium, tantalum and uranium to the point ... Grew, E. S.; Hazen, R. M. (15 May 2014). "Beryllium mineral evolution". American Mineralogist. 99 (5-6): 999-1021. Bibcode: ... beryllium, and the clay minerals. These reveal information about different processes; for example, uranium and thorium are heat ...
The mine has reserves amounting to 9.24 million tonnes of ore grading 0.13% beryllium. "Kalesay Beryllium Deposit". stansenergy ... The Kalesay mine is one of the largest beryllium mines in Kyrgyzstan. The mine is located in Issyk Kul Province. ...
Beryllium nitrate, also known as beryllium dinitrate, is an ionic beryllium salt of nitric acid with the chemical formula Be( ... Beryllium nitrate is a toxic chemical, like all other beryllium compounds. It is also an irritant in small doses. When burned, ... Beryllium nitrate can be prepared by reacting beryllium hydroxide in nitric acid. s "NIOSH Pocket Guide to Chemical Hazards # ... Walsh, Kenneth (2009). Beryllium chemistry and processing. ASM International. pp. 121-122. ISBN 978-0-87170-721-5. Retrieved 3 ...
Beryllium is a lightweight metal with unique mechanical and thermal properties that make it ideal for use in many applications ... Production of beryllium oxide began in the late 1950s.. Four NIOSH Divisions have beryllium-related projects:. beryllium- ... Beryllium and beryllium-containing alloys and compounds have been produced commercially in the US since the 1940s. ... Beryllium is a lightweight metal with unique mechanical and thermal properties that make it ideal for use in many applications ...
Beryllium sulfate may be prepared by treating an aqueous solution of any beryllium salt with sulfuric acid, followed by ... "Beryllium compounds (as Be)". Immediately Dangerous to Life and Health Concentrations (IDLH). National Institute for ... Beryllium sulfate normally encountered as the tetrahydrate, [Be(H2O)4]SO4 is a white crystalline solid. It was first isolated ... A mixture of beryllium and radium sulfate was used as the neutron source in the discovery of nuclear fission. ...
Overview Beryllium is the lightest member of the alkaline earth [1] metals family. These metals make up Group 2 (IIA) of the ... BERYLLIUM (REVISED) Note: This article, originally published in 1998, was updated in 2006 for the eBook edition. ... Beryllium ores are first converted to beryllium oxide (BeO) or beryllium hydroxide (Be(OH)2). These compounds are then ... beryllium, and bertrandite, Be4(OH)2Si2O7, 15 percent (wt.) beryllium. The world resources of beryllium are estimated at ...
... of all people occupationally-exposed to beryllium in air become sensitive to beryllium and may develop chronic beryllium ... Beryllium has been found in at least 535 of the 1,613 National Priorities List sites identified by the Environmental Protection ... Lung damage has been observed in people exposed to high levels of beryllium in the air. About 1-15% ... People working or living near beryllium industries have the greatest potential for exposure to beryllium. ...
Beryllium is one of the lightest metals, with unique mechanical, physical, and nuclear properties that allow major applications ... Recent chronic beryllium disease in residents surrounding a beryllium facility. Am J Respir Crit Care Med. 2008;177:1012-7. ... Cutaneous effects of beryllium. Chapter 9 pp 113-117. In: Rossman MD, Preuss OP, Powers MB, editors. Beryllium biomedical and ... History of beryllium, Chapter 2 in 58. In: Rossman MD, Preuss OP, Powers MB, editors. Beryllium biomedical and environmental ...
Toxicological profile for Beryllium. Atlanta, GA: U.S. Department of Health and Human Services, Public Health Service. ...
... has role epitope (CHEBI:53000) beryllium atom (CHEBI:30501) is a alkaline earth metal atom (CHEBI: ... beryllium atom (CHEBI:30501) has role adjuvant (CHEBI:60809) beryllium atom (CHEBI:30501) has role carcinogenic agent (CHEBI: ... CHEBI:30501 - beryllium atom. Main. ChEBI Ontology. Automatic Xrefs. Reactions. Pathways. Models. ...
Beryllium enters the air as dust from burning coal and oil.[3] Eventually, the dust settles in the land and water. Beryllium ... In the soil, most beryllium remains bound to the soil.. In Sewage Sludge. Beryllium may also enter the environment if it is in ... Beryllium can be harmful if it is inhaled, depending on how much beryllium one inhales and how long the exposure lasts. "If ... This condition resembles pneumonia and is called acute beryllium disease."[6]. Individuals who are sensitive to beryllium can ...
Science News was founded in 1921 as an independent, nonprofit source of accurate information on the latest news of science, medicine and technology. Today, our mission remains the same: to empower people to evaluate the news and the world around them. It is published by Society for Science & the Public, a nonprofit 501(c)(3) membership organization dedicated to public engagement in scientific research and education.. ...
beryllium (Be): Be chemical element, the lightest member of the alkaline-earth metals of Group 2 (IIa) of the periodic table, ... along with basic beryllium acetate, Be4O(C2H3O2)6, are used as a starting material for synthesis of beryllium salts. Beryllium ... The extraction of beryllium is complicated by the fact that beryllium is a minor constituent in most ores (5 percent by mass ... beryllium - Student Encyclopedia (Ages 11 and up). The chemical element beryllium is the lightest of the alkaline earth metals ...
The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database ...
Other names: Beryllium sulfide * Permanent link for this species. Use this link for bookmarking this species for future ...
... beryllium burns brilliantly forming a mixture of beryllium oxide and beryllium nitride. Beryllium dissolves readily in non- ... Beryllium is a component of several dental alloys. Beryllium is a health and safety issue for workers. Exposure to beryllium in ... Beryllium azide, BeN6 is known and beryllium phosphide, Be3P2 has a similar structure to Be3N2. A number of beryllium borides ... Solutions of beryllium salts, such as beryllium sulfate and beryllium nitrate, are acidic because of hydrolysis of the [Be(H2O) ...
Periodic Table of the Elements: BerylliumAtomic Number:4Atomic Symbol:Be BerylliumAtomic Weight:9.01218ElectronConfiguration:2 ·
This comprehensive book describes all aspects of the current sampling and analysis techniques for trace-level beryllium in the ... Future trends, including development of real-time beryllium sampling and analysis equipment, are also explored. Readers will ... As the use of beryllium grows worldwide, the need for a single source of information on this important but toxic element is of ... gain an understanding of sampling and analytical techniques best suited for sensitive and accurate analysis of beryllium at ...
Beryllium hydride reacts slowly with water but is rapidly hydrolysed by acid such as hydrogen chloride to form beryllium ... Beryllium hydride (systematically named poly[beryllane(2)] and beryllium dihydride) is an inorganic compound with the chemical ... beryllium does not react with hydrogen. Instead, BeH2 is prepared from preformed beryllium(II) compounds. It was first ... BeH2 + 2 H2O → Be(OH)2 + 2 H2 BeH2 + 2 HCl → BeCl2 + 2 H2 Beryllium hydride reacts with trimethylamine, N(CH3)3 to form a ...
Element Beryllium (Be), Group 2, Atomic Number 4, s-block, Mass 9.012. Sources, facts, uses, scarcity (SRI), podcasts, ... Beryllium is relatively transparent to X-rays so ultra-thin beryllium foil is finding use in X-ray lithography. Beryllium is ... Beryllium has but a single isotope, beryllium-9 which is not radioactive but beryllium-10, which cosmic rays produce in the ... Beryllium and its compounds are toxic and carcinogenic. If beryllium dust or fumes are inhaled, it can lead to an incurable ...
Chronic Beryllium Disease Prevention Program; Final Rule Amendments, (February 9, 2006).. *10 CFR Part 850. Chronic Beryllium ... Beryllium. National Institute of Occupational Safety and Health (NIOSH) Workplace Safety and Health Topic. Provides links to ... Chronic Beryllium Disease Prevention Program. U.S. Department of Energy (DOE). Provides links to DOE policies, guidance, ... Preventing Sensitization and Disease from Beryllium Exposure. National Institute of Occupational Safety and Health (NIOSH) ...
Beryllium nitride, also called triberyllium nitride, is the chemical compound with the molecular formula Be3N2 and a molar mass ... Beryllium nitride is obtained from the reaction of beryllium metal with nitrogen at temperatures between 700 and 1400 degrees ... Beryllium nitride is used to produce the isotope carbon-14 and in the manufacturing process of refractory ceramics and nuclear ... Beryllium nitride, also called triberyllium nitride, is the chemical compound with the molecular formula Be3N2 and a molar mass ...
Beryllium is safe in solid form, but when it is manufactured or machined, a toxic dust is created that can cause an often-fatal ... The order to GAO to study the hazards of beryllium, a metal used by the Department of Defense and the Department of Energy ... The Blade series showed that over the past five decades, the U.S. government and the beryllium industry risked the lives of ... "Because of the concerns that have been raised, we request that GAO provide information on the evolution of beryllium as a ...
The element beryllium (Be, atomic number 4) is a Group 2 alkaline earth \[…\] ... aerospace and atomic energy workers by exposing them to beryllium. President Bill Clinton asks Congress to enact legislation to ... The element beryllium (Be, atomic number 4) is a Group 2 alkaline earth metal, the lightest of the family that includes ... July 15, 1999: Hey, Sorry About the Beryllium Poisoning. __. 1999: __After five decades of denial, the U.S. government owns up ...
Wednesday it is notifying nearly 2,000 current and former employees and visitors that they may have been exposed to beryllium ... Beryllium is purified for use in nuclear weapons; also used in bike frames, golf clubs. * Inhalation of powdered beryllium can ... Inhalation of powdered beryllium can result in chronic beryllium disease, which can impair lung function in people who are ... Beryllium is hazardous only when its fine, particulate form is inhaled, he said. It was found on surfaces, not in the air, he ...
Beryllium is sometimes used in neutron sources, in which the beryllium is mixed with an alpha emitter such as 210Po, 226Ra, 239 ... Commentary: Beryllium exposure and Chronic Beryllium Disease. Lancet 2004, 415-16.. *Kelleher, P.C., J.W. Martyny, M.M. Mroz, L ... Beryllium-copper alloys (containing about two percent beryllium) are strong, hard, wear-resistant, and good conductors of heat ... Beryllium metal did not become readily available until 1957. Currently, the chief method of production is by reducing beryllium ...
... Information. Hanford Site beryllium-related forms list, Beryllium Training Programs, and Beryllium Warning ... Beryllium Facilities & Areas. Lists of current and past Beryllium Controlled Facilities and their managers on the Hanford Site. ... BERYLLIUM PROGRAM AT HANFORD. Beryllium is a lightweight, durable metal that has wide spread industrial applications. The use ... Beryllium Program Points of Contact. Key contacts among the Contractors, DOE, Organized Labor, and the Beryllium Awareness ...
Beryllium, Urine. 5595-4. 808542. Beryllium, Urine. ng/ml. 5595-4. 808540. Beryllium, Urine. 5595-4. 808545. Beryllium, Urine. ...
Browse Copper-beryllium alloy, Cu98Be2 and related products at Merck. ... Copper-beryllium alloy, Cu98Be2. undefined. Synonyms: . CAS null. Molecular Weight null. ... Copper-beryllium alloy, Cu98Be2, foil, 90 x 150mm, 0.0065mm thickness, as rolled, not light tested (nlt) ... Copper-beryllium alloy, Cu98Be2, foil, 150 x 150mm, 0.075mm thickness, half hard, light tight (lt) ...
  • Production of beryllium oxide began in the late 1950s. (cdc.gov)
  • It reacts briefly with oxygen in the air to form beryllium oxide (BeO). (encyclopedia.com)
  • The beryllium oxide forms a thin skin on the surface of the metal that prevents the metal from reacting further with oxygen. (encyclopedia.com)
  • Beryllium ores are first converted to beryllium oxide (BeO) or beryllium hydroxide (Be(OH) 2 ). (encyclopedia.com)
  • Van Ordstrand HS, Hughes R, Carmody MG. Chemical pneumonia in workers extracting beryllium oxide. (springer.com)
  • Beryllium oxide is used to make higher than normal levels of beryllium in air. (cdc.gov)
  • The high thermal conductivities of beryllium and beryllium oxide have led to their use in thermal management applications. (wikipedia.org)
  • Beryllium was discovered (1798) as the oxide by French chemist Nicolas-Louis Vauquelin in beryl and in emeralds and was isolated (1828) as the metal independently by German chemist Friedrich Wöhler and French chemist Antoine A.B. Bussy by the reduction of its chloride with potassium . (britannica.com)
  • Beryl and bertrandite have been found in sufficient quantities to constitute commercial ores from which beryllium hydroxide or beryllium oxide is industrially produced. (britannica.com)
  • Although it is readily attacked by alkalies and nonoxidizing acids , beryllium rapidly forms an adherent oxide surface film that protects the metal from further air oxidation under normal conditions. (britannica.com)
  • Beryllium oxide is useful for applications that require an excellent heat conductor and electrical insulator, with a very high melting point and high strength and hardness. (newworldencyclopedia.org)
  • Beryllium was discovered by Louis Vauquelin in 1798, as the oxide in beryl and emeralds . (newworldencyclopedia.org)
  • What made you want to look up beryllium oxide ? (merriam-webster.com)
  • Beryllium copper alloys and beryllium oxide ceramics are used in the electronic, nuclear and aerospace industries. (orau.org)
  • A number of opportunities exist for identification and development of needed beryllium reference materials for beryllium-containing ores, beryllium oxide, beryllium metal, beryllium metal-matrix materials, beryllium-containing alloys, and beryllium in biological samples. (astm.org)
  • Two minerals, bertrandite (which is supplied domestically) and beryl (which is currently supplied solely by imports), are necessary to ensure a stable supply of high-purity beryllium metal, alloys, and metal-matrix composites and beryllium oxide ceramics. (usgs.gov)
  • Beryllium oxide ceramics are used in a wide range of applications, including missile guidance systems, radar applications, and cell phone transmitters, and they are critical to medical technologies, such as magnetic resonance imaging (MRI) machines, medical lasers, and portable defibrillators. (usgs.gov)
  • Beryllium is a lightweight metal used primarily in specialty alloys and beryllium oxide ceramics. (environmental-expert.com)
  • The results of these studies clearly indicate that beryllium fluoride is acutely more toxic than either the sulfate or the oxide of this metal. (fluoridealert.org)
  • No deaths occurred among dogs exposed to 10 mg/m3 of beryllium oxide dust for 40 days. (fluoridealert.org)
  • This study had for origin to find a process permitting to manufacture bricks of beryllium oxide of pure nuclear grade, with a density as elevated as possible and with standardized shape. (osti.gov)
  • Because of the important toxicity of the beryllium oxide, the general features for the preliminary study of the sintering, have been determined while using alumina. (osti.gov)
  • At standard temperature and pressures beryllium resists oxidation when exposed to air (although its ability to scratch glass is probably due to the formation of a thin layer of the oxide). (earth.com)
  • A protective oxide layer forms around beryllium that prevents further reactions with air unless heated above 1000 °C. It will dissolve in alkali solutions and non-oxidizing acids, such as hydrochloric acid releasing hydrogen gas, but not in nitric acid , as it forms a protective oxide layer, similar to aluminium. (sciencemadness.org)
  • Cavity magnetrons used in microwave ovens have a beryllium oxide insulator at both ends, which is usually colored in pink or white, right above the brass mesh gasket and the other near the contacts. (sciencemadness.org)
  • However, extracting the metal from the oxide is very dangerous, as beryllium compounds are more toxic than the metal, due to being soluble. (sciencemadness.org)
  • Global Beryllium Oxide (BeO) Powder Sales Market Report 2017: By. (mynewsdesk.com)
  • Beryllium oxide is used as a component in ceramics for electronics and other electrical equipment because of its heat conductivity, high strength, hardness and electrical insulating properties. (ecmag.com)
  • Exposure can occur in an industrial situation in which beryllium as a pure metal, oxide or alloy can become airborne. (clinicaladvisor.com)
  • Beryllium can become airborne as a result of any heat treatment of the metal, machining, grinding, lapping or when alloys or metal have been exposed to the environment and a rust of beryllium oxide forms on the surface. (clinicaladvisor.com)
  • Products designed with beryllium, its alloys and beryllium oxide have provided the healthcare industry with increased reliability for a variety of equipment used in surgery, imaging, x-ray and Magnetic Resonance Imaging. (mmta.co.uk)
  • In ceramic form, beryllium oxide (BeO) conducts heat but not electricity and has the highest thermal conductivity of commercially available ceramics. (ohsonline.com)
  • Beryllium oxide can be used safely. (ohsonline.com)
  • This microelectronics facility was not processing the beryllium oxide circuit board material in ways that was likely to cause beryllium oxide to be released. (ohsonline.com)
  • Also, at this downstream beryllium oxide user, in addition to a low potential for airborne beryllium, most operations already required controls, such as dust masks, to protect the product or ventilation to prevent workplace exposures to metallizing pastes. (ohsonline.com)
  • Beryllium nitrate is a toxic chemical, like all other beryllium compounds. (wikipedia.org)
  • Beryllium and beryllium-containing alloys and compounds have been produced commercially in the US since the 1940s. (cdc.gov)
  • The original name of beryllium - glucinium - meant "sweet tasting," since the element and some of its compounds have a sweet taste. (encyclopedia.com)
  • These compounds are then converted to beryllium chloride (BeCl 2 ) or beryllium fluoride (BeF 2 ). (encyclopedia.com)
  • Beryllium compounds are commercially mined, and the beryllium is purified for use in nuclear weapons and reactors, aircraft and space vehicle structures, instruments, x-ray machines, and mirrors. (cdc.gov)
  • Some beryllium compounds will dissolve in water, but most stick to particles and settle to the bottom. (cdc.gov)
  • Delayed chemical pneumonitis occurring in workers exposed to beryllium compounds. (springer.com)
  • Instead, BeH2 is prepared from preformed beryllium(II) compounds. (wikipedia.org)
  • Beryllium and its compounds are toxic and carcinogenic. (rsc.org)
  • The main commercial sources of beryllium and its compounds are beryl and bertrandite. (newworldencyclopedia.org)
  • SUMMARY: OSHA is scheduling an informal public hearing on its proposed rule 'Occupational Exposure to Beryllium and Beryllium Compounds. (osha.gov)
  • Beryllium and beryllium compounds have many industrial uses. (orau.org)
  • In 2015, the Occupational Safety and Health Administration (OSHA) announced a proposal to amend its existing exposure limits for occupational exposure to beryllium and beryllium compounds in general industry. (environmental-expert.com)
  • Their newest production discusses OSHA's final rule to prevent chronic beryllium disease (CBD) and lung cancer in American workers by limiting their exposure to beryllium and beryllium compounds. (environmental-expert.com)
  • Of all beryllium compounds, beryllium fluoride complexes (including beryllium fluoride and beryllium oxyfluoride) appear to be the most toxic. (fluoridealert.org)
  • As shown below, studies dating back to the 1930s have clearly shown that beryllium fluoride compounds have a much greater systemic toxicity, and produce more severe respiratory and dermatological (skin) reactions at lower concentrations, than other common beryllium compounds. (fluoridealert.org)
  • The Notice of Proposed Rulemaking for Occupational Exposure to Beryllium and Beryllium Compounds in Construction and Shipyard Sectors will be published in the Federal Register on June 27, 2017. (dol.gov)
  • On the other hand, all of the documented cases of CBD thus far have dealt with the element in its pure form - either as pure beryllium or pure beryllium compounds - and once beryllium is dissolved into copper, beryllium comprises about 1.85 percent of the alloy. (moldmakingtechnology.com)
  • The International Agency for Research on Cancer (IARC) lists beryllium and beryllium compounds as Category 1 carcinogens. (sciencemadness.org)
  • beryllium compounds with the exception of. (europa.eu)
  • The Occupational Safety and Health Administration (OSHA) recently issued a final rule modifying a 40-year-old standard pertaining to exposure to beryllium and beryllium compounds. (ecmag.com)
  • The new rule represents an example of how NIOSH research on beryllium has had a real impact in the workplace to reduce exposures and disease. (cdc.gov)
  • The findings of NIOSH research contributed to a rule that will lower exposures and reduce disease related to beryllium in workplace across the country. (cdc.gov)
  • Certain other lung diseases (including chronic beryllium disease (CBD)) were 780% higher than the US population. (cdc.gov)
  • About 1-15% of all people occupationally-exposed to beryllium in air become sensitive to beryllium and may develop chronic beryllium disease (CBD), an irreversible and sometimes fatal scarring of the lungs. (cdc.gov)
  • This condition resembles pneumonia and is called acute beryllium disease Occupational and community air standards are effective in preventing most acute lung damage. (cdc.gov)
  • This condition is called chronic beryllium disease (CBD), and can occur many years after exposure to higher than normal levels of beryllium (greater than 0.2 µg/m 3 ). (cdc.gov)
  • The general population is unlikely to develop acute or chronic beryllium disease because ambient air levels of beryllium are normally very low (0.00003-0.0002 µg/m 3 ). (cdc.gov)
  • Potential toxicities include acute and chronic beryllium disease (CBD) and lung cancer. (springer.com)
  • An official American Thoracic Society statement: diagnosis and management of beryllium sensitivity and chronic beryllium disease. (springer.com)
  • Jones-Williams W. Pathology and histopathology of chronic beryllium disease. (springer.com)
  • Rossman MD. Chronic beryllium disease, a hypersensitivity disorder. (springer.com)
  • A reconsideration of acute beryllium disease. (springer.com)
  • Recent chronic beryllium disease in residents surrounding a beryllium facility. (springer.com)
  • chronic beryllium disease because ambient air levels of beryllium are normally very low (0.00003-0.0002 ug/m3). (cdc.gov)
  • This condition resembles pneumonia and is called acute beryllium disease. (sourcewatch.org)
  • Agency for Toxic Substances & Disease Registry, ToxFAQs for Beryllium , Accessed August 28, 2010. (sourcewatch.org)
  • The commercial use of beryllium requires the use of appropriate dust control equipment and industrial controls at all times because of the toxicity of inhaled beryllium-containing dusts that can cause a chronic life-threatening allergic disease in some people called berylliosis. (wikipedia.org)
  • Beryllium is safe in solid form, but when it is manufactured or machined, a toxic dust is created that can cause an often-fatal, incurable lung disease. (toledoblade.com)
  • As a result, dozens of workers contracted beryllium disease, and some died. (toledoblade.com)
  • Mr. Kanjorski, who in February introduced a bill to compensate Americans with beryllium disease, said in a statement that he thinks it is "a good sign that the beryllium issue has received the attention of so many distinguished legislators from both parties. (toledoblade.com)
  • Miss Kaptur said: "The GAO study will enlighten our legislative initiatives that my colleagues and I are working on to help those with chronic beryllium disease. (toledoblade.com)
  • Short-term exposure causes acute beryllium disease , which causes skin irritation and inflammation of the eyes, nose, throat and lungs. (wired.com)
  • Long-term exposure, even in minute amounts, can result in chronic beryllium disease , mainly affecting the lungs. (wired.com)
  • (CNN) -- Los Alamos National Laboratory announced Wednesday it is notifying nearly 2,000 current and former employees and visitors that they may have been exposed to beryllium in the lab and may be at risk of disease. (cnn.com)
  • About 2 percent of the exposed employees could become sensitized, a smaller percentage of whom could develop chronic beryllium disease, Roark said. (cnn.com)
  • Inhalation of powdered beryllium can result in chronic beryllium disease, which can impair lung function in people who are susceptible. (cnn.com)
  • Unfortunately, a small portion of exposed personnel have been diagnosed with beryllium-related medical conditions including Chronic Beryllium Disease (CBD) or Beryllium Sensitization (BeS). (hanford.gov)
  • Key contacts among the Contractors, DOE, Organized Labor, and the Beryllium Awareness Group (BAG) that represent the Beryllium Disease Prevention Program at Hanford. (hanford.gov)
  • Information, including Charter and Minutes from the Hanford Site Chronic Beryllium Disease Prevention Committee with members from all the Contractors, DOE, Organized Labor and the BAG. (hanford.gov)
  • A variety of Beryllium Disease related Questions & Answers, some from our public forum. (hanford.gov)
  • Other resources for information on Chronic Beryllium Disease, including hospitals with knowledge of the subject. (hanford.gov)
  • Contact information for professionals that are eager to assist you with your Chronic Beryllium Disease questions and other related concerns. (hanford.gov)
  • Contacts for medical facilities with expertise in the area of Beryllium Disease and its treatment and testing. (hanford.gov)
  • Inhaling beryllium as dust or fumes from machining or manufacturing activities can cause sensitivity in some individuals that can evolve into chronic beryllium disease (CBD), formerly known as berylliosis. (orau.org)
  • DOE established a chronic beryllium disease prevention program (CBDPP) to reduce the number of workers currently exposed to beryllium in the course of their work at DOE facilities managed by DOE or its contractors, minimize the levels of, and potential for, exposure to beryllium, and establish medical surveillance requirements to ensure early detection of the disease. (orau.org)
  • Chronic beryllium (Be) disease is a granulomatous lung disorder that results from Be exposure in a genetically susceptible host. (nih.gov)
  • Medical experts say some people get chronic beryllium disease at exposure levels well below the federal safety limits used at nuclear cleanup sites. (propublica.org)
  • We're starting to find that some people are genetically at increased risk for beryllium sensitization and disease. (propublica.org)
  • See all of Chronic Beryllium Disease , no other writeups in this node. (everything2.com)
  • Chronic beryllium disease (CBD) can be caused when one is exposed to fumes , dust , powder containing beryllium and has an allergic reaction . (everything2.com)
  • Chronic beryllium disease, or CBD, causes scarring of the lung tissue. (ucsfhealth.org)
  • UCSF provides comprehensive evaluations and care for work-related lung conditions, such as chronic beryllium disease. (ucsfhealth.org)
  • Although chronic beryllium disease currently has no cure, treatments can prevent further scarring in the lungs and improve oxygen levels in the blood. (ucsfhealth.org)
  • But when beryllium is ground, sanded or cut, the metal's dust can cause an incurable, often fatal lung disease. (chicagotribune.com)
  • We know there are many dozens of workers who get sick every year from chronic beryllium disease,' outgoing OSHA head David Michaels said in an interview. (chicagotribune.com)
  • Beryllium disease slowly damages the lungs and leaves some victims unable to breathe without the aid of an oxygen tank. (chicagotribune.com)
  • it's about the years that people live with the terrible suffering of not being able to breathe, having chronic coughs, having the terrible fatigue that comes with chronic beryllium disease,' Newman said. (chicagotribune.com)
  • No one knows precisely how many workers have died of beryllium disease. (chicagotribune.com)
  • In the decades that followed, when America needed tons of beryllium for the Cold War, workers continued to contract the disease and die. (chicagotribune.com)
  • Metal hypersensitivity is a cell-mediated immune response that can lead to various diseases, including the granulomatous lung disease called Chronic Beryllium Disease. (nationaljewish.org)
  • We read with great interest "Chronic Beryllium Disease and Sensitization at a Beryllium Processing Facility" (Rosenman et al. (thefreelibrary.com)
  • This conclusion is supported by the observation that the rates of chronic beryllium disease (CBD) and sensitization were constant across all the categories of exposure used by Rosenman et al. (thefreelibrary.com)
  • Exposure to beryllium can cause a potentially fatal disease, and occupational exposure limits for beryllium in air and on surfaces have been established to reduce exposure risks to potentially affected workers (4, 5). (environmental-expert.com)
  • Chronic Beryllium Disease ( CBD) primarily affects the lungs. (osap.org)
  • In the July 3, 2014 issue of the journal Cell , John Kappler, PhD , and his colleagues show how a genetic susceptibility to the disease creates a molecular pocket in an immune system protein, which captures beryllium ions and triggers an inflammatory response in the lungs. (nationaljewish.org)
  • People who develop chronic beryllium disease can have varied courses of disease, from stable with medications to progressive lung damage and death. (nationaljewish.org)
  • About 85 percent of people who develop chronic beryllium disease have an immune system protein known as HLA-DP2. (nationaljewish.org)
  • Susceptible individuals exposed to the metal can contract a serious medical condition, Chronic Beryllium Disease that can impair the lungs. (lamonitor.com)
  • The laboratory announcement states that about 2 percent of the 240 employees who worked at the facility who were exposed to beryllium could become sensitized and an even smaller percentage could develop chronic beryllium disease. (lamonitor.com)
  • The proposal for shipyards and construction would maintain the requirements for exposure limits (permissible exposure limit of 0.2 μg/m 3 and short-term exposure limit of 2.0 μg/m 3 ), which will continue to protect workers from a serious beryllium-related lung disease known as chronic beryllium disease. (dol.gov)
  • In making a diagnosis of chronic beryllium disease, your doctor will start by taking a detailed medical and occupational history and conducting a thorough medical examination. (ucsfhealth.org)
  • How is beryllium disease diagnosed? (clevelandclinic.org)
  • During a bronchoscopy , a slender tube with a camera on the end is inserted into the lungs to allow the doctor to obtain samples (washings) to look for evidence of BeS in the lung, and biopsies to look for granulomas and other changes caused by beryllium disease. (clevelandclinic.org)
  • Research to Practice Implications of High-Risk Genotypes for Beryllium Sensitization and Disease. (clevelandclinic.org)
  • and (18) DOE also proposed a compensation program for DOE workers affected by chronic beryllium disease, which has been introduced as legislation in Congress. (gao.gov)
  • Here, we used bronchoalveolar lavage (BAL) cells from HLA-DP2-expressing patients with chronic beryllium disease (CBD), a debilitating granulomatous lung disorder characterized by accumulations of beryllium-specific (Be-specific) CD4+ T cells in the lung. (jci.org)
  • Inhalation of these tiny particles is the type of exposure that can lead to chronic beryllium disease (CBD) - an irreversible and sometimes fatal scarring of the lungs (see Warning Signs of Chronic Beryllium Disease) . (moldmakingtechnology.com)
  • More than 27,000 workers were screened nationally, with 183 reportedly having beryllium disease and 546 having blood abnormalities. (infectioncontroltoday.com)
  • Beryllium disease is an incurable lung illness that is caused after the lightweight metal is inhaled. (infectioncontroltoday.com)
  • Individuals with beryllium sensitization can develop a debilitating disease of the lungs called chronic beryllium disease if they inhale airborne beryllium after becoming sensitized. (lexology.com)
  • Inhaling airborne beryllium can result in a lung condition known as chronic beryllium disease (CBD), a debilitating pulmonary disease that can result in serious health complications or even death. (ecmag.com)
  • Require employers to make available medical exams to monitor exposed workers and provide medical removal protection benefits to workers identified with a beryllium-related disease. (ecmag.com)
  • We know there are many dozens of workers who get sick every year from chronic beryllium disease, and [now] that will change," Michaels said. (ecmag.com)
  • Chronic beryllium disease (CBD) may develop in individuals who are exposed to beryllium due to a hypersensitivity immune response to the metal beryllium. (clinicaladvisor.com)
  • Beryllium has a potential to become airborne as either dust or fume and most workers that have potential exposure may develop beryllium sensitization and eventually, chronic beryllium disease. (clinicaladvisor.com)
  • Exposure to beryllium is essential for the disease to occur. (clinicaladvisor.com)
  • Workers who have the potential to be exposed to greater than 0.1 ugm/m3 of beryllium can be thought of as at risk for developing beryllium disease. (clinicaladvisor.com)
  • In addition to the environmental risk, genetic risk factors play a role in the susceptibility to beryllium disease. (clinicaladvisor.com)
  • The HLA polymorphism of having a glutamate on position 69 of the HLA DP protein, which carries the greatest risk, is present in about 90 percent of patients with beryllium disease as well as about 40 percent of the general population. (clinicaladvisor.com)
  • This genetic marker appears to be a risk factor for the ability to develop a hypersensitivity reaction to beryllium but not of whether someone who has developed a hypersensitivity reaction will develop the disease. (clinicaladvisor.com)
  • Our company is demonstrating that new cases of chronic beryllium disease can be successfully prevented in the primary manufacturing industries where there had been a risk. (ohsonline.com)
  • Beryllium ores are used to make speciality ceramics for electrical and high-technology applications. (cdc.gov)
  • [2] Additionally, beryllium ores are used in specialty ceramics for electrical and high-technology applications and beryllium alloys are used in automobiles, computers, sports equipment (golf clubs and bicycle frames), and dental bridges. (sourcewatch.org)
  • The extraction of beryllium is complicated by the fact that beryllium is a minor constituent in most ores (5 percent by mass even in pure beryl, less than 1 percent by mass in bertrandite) and is tightly bound to oxygen . (britannica.com)
  • The United States is one of only three countries that currently process beryllium ores and concentrate them into beryllium products, and these three countries supply most of the rest of the world with these products. (usgs.gov)
  • Beryllium is a naturally occurring metal found in beryl and bertrandite ores. (osap.org)
  • Despite this, as beryllium is highly reactive, it is not found in its pure state and, therefore, is mined from ores. (mmta.co.uk)
  • When added as an alloying element to aluminium, copper (notably the alloy beryllium copper), iron or nickel beryllium improves many physical properties. (wikipedia.org)
  • Currently available beryllium reference materials include standard spectroscopy solutions of beryllium and copper-beryllium alloy in the form of blocks, chips, and rods. (astm.org)
  • In August 2019, IBC Advanced Alloys Corp. announced that it received new orders of high-performance beryllium-aluminum alloy parts made from IBC's proprietary Beralcast material from a leading global manufacturer of semiconductor and electronics assembly equipment. (openpr.com)
  • Well, Arizona is the copper state and beryllium copper is as tough as it gets for a copper alloy. (candlepowerforums.com)
  • Global Magnesium Beryllium Alloy Industry Report 2015 ​is a new market research publication announced by Reportstack. (pitchengine.com)
  • This report is a professional and in-depth study on the current state of the Magnesium Beryllium Alloy industry. (pitchengine.com)
  • The Magnesium Beryllium Alloy market analysis is provided for the international markets including development trends, competitive landscape analysis, and key regions development status. (pitchengine.com)
  • Magnesium Beryllium Alloy industry import/export consumption, supply and demand figures and cost price and production value gross margins are also provided. (pitchengine.com)
  • The Magnesium Beryllium Alloy industry development trends and marketing channels are analyzed. (pitchengine.com)
  • Beryllium copper , also known as copper beryllium , BeCu or beryllium bronze, is a metal alloy of copper and beryllium , and sometimes with other alloying elements. (globalspec.com)
  • Description: C17200 Beryllium Copper ASTM B196, AMS 4533, RWMA CLASS IV Most commonly utilized beryllium copper alloy and is notable for exhibiting the highest strength and hardness compared to commercial copper alloys. (globalspec.com)
  • However, non-beryllium alloy manufacturers point out that nickel is only a carcinogen in fish, and when nickel is machined and ground, the particles do not become airborne, as is the case with beryllium. (moldmakingtechnology.com)
  • Even we actually don't make as much discrimination as is deserved between pure beryllium and a beryllium-containing alloy because we want people to treat it with respect. (moldmakingtechnology.com)
  • Its tool designs have proved extremely successful, and one crucial factor is the material used for many of the core components - Brush Wellman's copper-beryllium Brush Alloy 25. (theengineer.co.uk)
  • Beryllium is a lightweight metal used in many industries, including but not limited to aerospace and aircraft, alloy manufacturing, nuclear reactors, dental implants, ceramics and costume jewelry. (clinicaladvisor.com)
  • The recovery of beryllium from copper beryllium alloys is not performed due to the very low content of beryllium in the alloy. (mmta.co.uk)
  • Beryllium hydride reacts slowly with water but is rapidly hydrolysed by acid such as hydrogen chloride to form beryllium chloride. (wikipedia.org)
  • Beryllium metal was isolated in 1828 by Friedrich Wöhler at Berlin and independently by Antoine-Alexandere-Brutus Bussy at Paris, both of whom extracted it from beryllium chloride (BeCl 2 ) by reacting this with potassium. (rsc.org)
  • In 1828, Friedrich Wöhler and Antoine Bussy independently isolated the metal by reacting potassium with beryllium chloride. (newworldencyclopedia.org)
  • Friedrich Wöhler and A. A. Bussy independently isolated the metal in 1828 by reacting potassium on beryllium chloride. (earth.com)
  • Hauy and Vauquelin were unable to extract the element, but in 1828 Friedrich Wohler and Antoine- Alexandere-Brutus Bussy independently extracted the element by reacting beryllium chloride with potassium. (mmta.co.uk)
  • Beryllium (Be) , formerly (until 1957) glucinium , chemical element , the lightest member of the alkaline-earth metals of Group 2 (IIa) of the periodic table , used in metallurgy as a hardening agent and in many outer space and nuclear applications. (britannica.com)
  • Beryllium is a member of the family of alkaline earth metals and lies at the top of group two (former group 2A) of the periodic table , just above magnesium . (newworldencyclopedia.org)
  • Beryllium is the chemical element in the periodic table that has the symbol Be and atomic number 4. (earth.com)
  • Beryllium is more chemically similar to aluminium than its close neighbors in the periodic table, due to having a similar charge-to-radius ratio. (sciencemadness.org)
  • Beryllium is the 47th most abundant element on Earth and belongs to the Alkaline Earth Metals, which are Group 2 in the Periodic Table. (mmta.co.uk)
  • Although right next to lithium in the Periodic Table, beryllium has very different properties, as it is a strong metal with a high melting point (1278°C) and is notably resistant to corrosion. (mmta.co.uk)
  • Beryllium is the fourth element in the periodic table. (ohsonline.com)
  • There are no tests that can tell you if you have been exposed to hazardous levels of beryllium. (cdc.gov)
  • Lung damage has been observed in people exposed to high levels of beryllium in the air. (cdc.gov)
  • The general population is exposed to normally low levels of beryllium in air, food, and water. (cdc.gov)
  • People working in industries where beryllium is mined, processed, machined, or converted into metal, alloys, and other chemicals may be exposed to high levels of beryllium. (cdc.gov)
  • People living near these industries may also be exposed to higher than normal levels of beryllium in air. (cdc.gov)
  • People living near uncontrolled hazardous waste sites may be exposed to higher than normal levels of beryllium. (cdc.gov)
  • Beryllium ore is mined, processed, machined, or converted into metal, alloys, and and the beryllium is purified for use in nuclear weapons and other chemicals may be exposed to high levels of beryllium. (cdc.gov)
  • Beryllium alloys are used in automobiles, be exposed to higher than normal levels of beryllium. (cdc.gov)
  • Most people are exposed to low levels of beryllium in air, food, and water. (sourcewatch.org)
  • [5] People can be exposed to higher levels of beryllium if they work mining, processing, or otherwise working with beryllium. (sourcewatch.org)
  • People living near these industries or near hazardous waste sites may also be exposed to high levels of beryllium. (sourcewatch.org)
  • The Blade series showed that over the past five decades, the U.S. government and the beryllium industry risked the lives of thousands of workers by knowingly allowing them to be exposed to levels of beryllium over the federal safety limit. (toledoblade.com)
  • In addition, the series detailed how the federal government helped kill a 1975 safety plan that would have required lower levels of beryllium dust in manufacturing plants in an effort to protect workers. (toledoblade.com)
  • Some people (1-15%) become sensitive to beryllium. (cdc.gov)
  • Individuals who are sensitive to beryllium can develop an inflammatory reaction in the respiratory system. (sourcewatch.org)
  • Currently, there is no way to test if a person is sensitive to beryllium before exposure occurs. (everything2.com)
  • Is there truly a safe level that those who are sensitive to beryllium can withstand? (chicagotribune.com)
  • Go to OSHA's web site at https://www.osha.gov/berylliumrule/index.html external icon to learn about the final rule in place to protect workers from Beryllium exposure. (cdc.gov)
  • On Jan. 9, OSHA issued a final rule that established new protections for workers who are exposed to beryllium in general industry, construction and shipyards. (environmental-expert.com)
  • On March 21st, all three standards from a new final rule issued by the Occupational Safety and Health Administration (OSHA) to protect workers from exposures associated with beryllium-related diseases will take effect. (environmental-expert.com)
  • OSHA estimates about 62,000 workers are exposed to beryllium in the workplace. (environmental-expert.com)
  • Earlier this month, the Occupational Safety and Health Administration (OSHA) announced a proposed delay in the effective date of the rule entitled Occupational Exposure to Beryllium. (environmental-expert.com)
  • Given the work involved here, the other smaller items OSHA is moving forward on, and the resources being put into deregulatory actions on beryllium and recordkeeping, plus the 10% cut sustained by the standards budget last year, it's hard to see them keeping to this schedule. (workplacefairness.org)
  • According to OSHA, inhaling or contacting beryllium can cause an immune response that results in an individual becoming sensitized to it. (lexology.com)
  • The current US limit for airborne beryllium is 0.2 mcg/m 3 exposure for an eight hour day with a short term exposure limit of 2 mcg/m 3 over a 15 minute sampling period according to the Occupational Safety and Health Administration (OSHA). (clinicaladvisor.com)
  • Beryllium nitrate can be prepared by reacting beryllium hydroxide in nitric acid. (wikipedia.org)
  • Treatment with acids , roasting with complex fluorides, and liquid-liquid extraction have all been employed to concentrate beryllium in the form of its hydroxide. (britannica.com)
  • The hydroxide is converted to fluoride via ammonium beryllium fluoride and then heated with magnesium to form elemental beryllium. (britannica.com)
  • Market Intelligence Data has released a new report on the global Beryllium Hydroxide market. (openpr.com)
  • The report provides detailed statistics on the Beryllium Hydroxide market industry and its framework. (openpr.com)
  • The Global Beryllium Hydroxide Market Size is Projected to Reach at a CAGR of 19.35% during 2021-2027. (openpr.com)
  • The number one goal of this Beryllium Hydroxide Market document is to provide Quantitative records withinside the form of charts and graphs. (openpr.com)
  • It turns smooth to collect the effect of COVID-19 on the market boom through this Beryllium Hydroxide market document. (openpr.com)
  • [ 1 ] It is readily hydrolysed forming beryllium hydroxide and ammonia. (thefullwiki.org)
  • Beryllium was discovered by French chemist Louis-Nicolas Vauquelin (1763-1829) in 1798. (encyclopedia.com)
  • Beryllium was discovered by Louis Nicolas Vauquelin in 1797 and first isolated by Friedrich Wöhler and Antoine Bussy in 1828. (americanelements.com)
  • The metal is usually prepared by reducing beryllium fluoride with magnesium metal. (rsc.org)
  • Currently, the chief method of production is by reducing beryllium fluoride with magnesium metal. (newworldencyclopedia.org)
  • Based on the evidence, it is apparent that workers exposed to a combination of beryllium and fluoride dusts will be more vulnerable to "beryllium poisoning" than workers exposed to beryllium dusts that do not contain fluoride. (fluoridealert.org)
  • Despite this fact, most of the literature discussing occupational beryllium poisoning fails to discuss the often contributing/potentiating role of fluoride dusts. (fluoridealert.org)
  • While fluoride is a powerful respiratory irritant in and of itself, it appears that fluoride's ability to potentiate the toxicity of beryllium may result from the beryllium fluoride complex's capacity to mimic g-proteins, thereby enabling both beryllium and fluoride to penetrate deeper into tissue and cells. (fluoridealert.org)
  • Whereas exposure of seven species of animals to 10 mg/m3 of beryllium sulfate for 95 days proved lethal to only rats, significant mortality occurred among dogs, guinea pigs, mice, and rats exposed to the same concentration of beryllium fluoride for only 15 days. (fluoridealert.org)
  • Beryllium fluoride at exposure concentrations of one and ten milligrams per cubic meter. (fluoridealert.org)
  • An example is provided in the manufacture of beryllium, in which hydrogen fluoride (HF) or other fluorides have been shown not only to be present but actually to exist in amounts several hundred fold greater than that of beryllium… The study described in the following pages was performed to determine whether hydrogen fluoride has a potentiating effect on beryllium poisoning by inhalation. (fluoridealert.org)
  • Such results have obvious implications in industrial exposures… The self-consistent and definitive results in mortality, weight response and pathologic changes leave no doubt as to the enhancing effect of hydrogen fluoride on beryllium sulfate poisoning by inhalation in rats. (fluoridealert.org)
  • It can also be prepared from the electrolysis of a mixture of molten beryllium fluoride and sodium fluoride . (sciencemadness.org)
  • Klebsiella pneumoniae nitrogenase: formation and stability of putative beryllium fluoride-ADP transition state complexes. (ethz.ch)
  • As the use of beryllium grows worldwide, the need for a single source of information on this important but toxic element is of increasing importance. (rsc.org)
  • Beryllium is a toxic metal that is both naturally occurring and released into the environment from industrial pollution and incineration. (ewg.org)
  • Ending decades of denial and inaction, the federal government on Friday issued a tough new exposure standard for one of the most unusual and deadly occupational risks U.S. workers have ever faced: the toxic metal beryllium. (chicagotribune.com)
  • The U.S. Department of Labor's Occupational Safety and Health Administration has issued notices to the Fleet Readiness Center Southwest regarding violations of workplace health and safety standards at its facility in Coronado that exposed workers to extremely toxic materials such as lead, cadmium and beryllium. (environmental-expert.com)
  • A toxic bivalent element, It is a steel grey, strong, light-weight yet brittle, alkaline earth metal, that is primarily used as a hardening agent in alloys (most notably, beryllium copper). (earth.com)
  • CHICAGO-Several workers at Argonne National Laboratory have tested positive for blood abnormalities after being exposed to beryllium-a toxic metal. (infectioncontroltoday.com)
  • Unfortunately, beryllium is highly toxic when inhaled. (ecmag.com)
  • Beryllium is toxic to many organisms ( ToxFAQs: Beryllium ) and has been shown to act as a mutagen in Eschericia coli ( Zakour and Glickman, 1984 ). (ethz.ch)
  • 3) The pH of the nutrient solution is critical: at acid pH's, beryllium is highly toxic, and growth increase due to beryllium only appears at initial pH's above 11.2, although this initial pH rapidly falls to neutrality during the experimental period. (osti.gov)
  • In structural applications, the combination of high flexural rigidity, thermal stability, thermal conductivity and low density (1.85 times that of water) make beryllium metal a desirable aerospace material for aircraft components, missiles, spacecraft, and satellites. (wikipedia.org)
  • Other significant properties are high specific heat (1925 J·kg−1·K−1) and thermal conductivity (216 W·m−1·K−1), which make beryllium the metal with the best heat dissipation characteristics per unit weight. (wikipedia.org)
  • Mixing beryllium with these metals increases their electrical and thermal conductivity. (rsc.org)
  • Beryllium metal composites, which combine the fabrication ability of aluminum with the thermal conductivity and highly elastic modulus of beryllium, are ideal for producing aircraft and satellite structural components that have a high stiffness-to-weight ratio and low surface vibration. (usgs.gov)
  • Beryllium-copper alloys are used in a wide variety of applications because of their electrical and thermal conductivity, high strength and hardness, nonmagnetic properties, along with good corrosion and fatigue resistance. (earth.com)
  • Beryllium-copper alloys are frequently used for their electrical and thermal conductivity as well as their hardness. (ecmag.com)
  • Beryllium is a lightweight metal with unique mechanical and thermal properties that make it ideal for use in many applications and industries including defense, aerospace, telecommunications, automotive electronics, and medical specialties. (cdc.gov)
  • Beryllium is a naturally occurring metal found in several minerals. (cdc.gov)
  • Beryllium is a hard, light-weight metal that is used in many industries. (cdc.gov)
  • Beryllium is a hard, brittle metal with a grayish-white surface. (encyclopedia.com)
  • Strupp C. Beryllium metal I. Experiment results on acute oral toxicity, local skin and eye effects and genotoxicity. (springer.com)
  • Beryllium is a steel gray and hard metal that is brittle at room temperature and has a close-packed hexagonal crystal structure. (wikipedia.org)
  • As a metal, beryllium is transparent or translucent to most wavelengths of X-rays and gamma rays, making it useful for the output windows of X-ray tubes and other such apparatus. (wikipedia.org)
  • Beryllium is a steel-gray metal that is quite brittle at room temperature , and its chemical properties somewhat resemble those of aluminum . (britannica.com)
  • Beryllium is the only stable light metal with a relatively high melting point . (britannica.com)
  • Beryllium is a silvery-white metal. (rsc.org)
  • Beryllium nitride is obtained from the reaction of beryllium metal with nitrogen at temperatures between 700 and 1400 degrees Celsius. (reference.com)
  • The order to GAO to study the hazards of beryllium, a metal used by the Department of Defense and the Department of Energy because of its light weight and strength in the manufacture of weapons, came from a bipartisan group of eight members of Congress. (toledoblade.com)
  • The element beryllium (Be, atomic number 4) is a Group 2 alkaline earth metal, the lightest of the family that includes magnesium, calcium, strontium, barium and radium. (wired.com)
  • Concern over possible exposure to the hard, gray metal, which is purified for use in nuclear weapons and reactors and also used in bicycle frames and golf clubs, was first raised last November, when a box containing beryllium was received at the laboratory's short-term storage facility, he said. (cnn.com)
  • Beryllium metal did not become readily available until 1957. (newworldencyclopedia.org)
  • Beryllium is a lightweight, durable metal that has wide spread industrial applications. (hanford.gov)
  • Beryllium is a hard, lightweight metal that is very strong and easy to shape. (orau.org)
  • Although bertrandite is the source mineral for more than 90 percent of the beryllium produced globally, industrial beryl is critical for the production of the very high purity beryllium metal needed for some strategic applications. (usgs.gov)
  • High-purity beryllium metal is classified as a strategic and critical material by the Strategic Materials Protection Board of the U.S. Department of Defense because it is used in products that are vital to national security. (usgs.gov)
  • Beryllium is maintained in the U.S. stockpile of strategic materials in the form of hot-pressed beryllium metal powder. (usgs.gov)
  • Beryllium in the form of metal matrix composites is employed for chassis, suspension, and braking component applications. (openpr.com)
  • Beryllium, an exotic metal used as a hardener in high-performance alloys and ceramics, can cause berylliosis-a chronic, incurable and sometimes fatal illness. (environmental-expert.com)
  • Beryllium is an odourless solid, steel grey metal. (europa.eu)
  • Beryllium is a rigid metal with an atomic mass of 9.0122. (reference.com)
  • DENVER, CO - Using exquisitely detailed maps of molecular shapes and the electrical charges surrounding them, researchers at National Jewish Health have discovered how the metal beryllium triggers a deadly immune response in the lungs. (nationaljewish.org)
  • Beryllium is a relatively rare metal whose unique combination of strength and lightness makes it invaluable for various industrial uses, ranging from triggers for nuclear bombs to satellite components, computers and cell phones. (nationaljewish.org)
  • Beryllium is a potentially hazardous metal that has many applications. (lamonitor.com)
  • Brush Wellman has received a $7.0 million order to provide beryllium metal for the Joint European Torus, the largest experimental nuclear fusion reactor in the world. (theengineer.co.uk)
  • The health issues, although legitimate, can be controlled with the proper handling of the beryllium alloys, or even the beryllium metal itself," he states. (moldmakingtechnology.com)
  • Beryllium has the fastest speed of sound in any known metal, with a value of 12.9 km/s at standard conditions. (sciencemadness.org)
  • Bulk beryllium metal should be kept away from strong acids or sharp objects. (sciencemadness.org)
  • Beryllium nitride is prepared by heating beryllium metal powder with dry nitrogen in an oxygen-free atmosphere in temperatures between 700 and 1400 °C. (thefullwiki.org)
  • The element beryllium is a grey metal that has great strength to weight properties, which has been classified as a strategic and critical material by the United States Department of Defense. (lexology.com)
  • A vast majority are general industry workers performing operations such as beryllium metal and ceramic production, nonferrous foundries and fabrication of beryllium alloys. (ecmag.com)
  • Protection of beryllium metal against microbial influenced corrosion using silane self-assembled monolayers. (ethz.ch)
  • Beryllium (Be) is a rare alkaline earth metal that is used in a variety of high-technology industries, including aerospace, ceramics, electronics, and nuclear defense ( 1 ). (jimmunol.org)
  • Beryllium is a relatively soft, light metal (although 3.5 times the density of lithium) and is silvery-white in colour. (mmta.co.uk)
  • Some ` Children should avoid playing in soils near uncontrolled people who are sensitized to beryllium may not have any hazardous waste sites where beryllium may have been symptoms. (cdc.gov)
  • Because of the concerns that have been raised, we request that GAO provide information on the evolution of beryllium as a hazardous material and on the controls over exposure to its use. (toledoblade.com)
  • Beryllium is hazardous only when its fine, particulate form is inhaled, he said. (cnn.com)
  • The report notes that in addition to plutonium and tritium that are often present on the site, there are also nonradioactive but hazardous or potentially hazardous materials like beryllium. (lamonitor.com)
  • Non-beryllium copper alloys - developed as an alternative to copper beryllium - contain nickel, which also is on the same list of hazardous substances. (moldmakingtechnology.com)
  • Beryllium has a poisonous nature and is hazardous to humans. (mmta.co.uk)
  • Diagnosis of CBD includes (1) a history of beryllium exposure, (2) a positive lymphocyte proliferation test (BeLPT) either from blood or bronchoalveolar lavage, and (3) compatible pathology on lung biopsy. (springer.com)
  • Another important step in making a diagnosis of CBD is a simple blood test called beryllium lymphocyte proliferation test (BeLPT). (ucsfhealth.org)
  • In evaluating CBD, bronchoscopy usually includes testing a patient's sputum because this fluid can undergo the same beryllium lymphocyte proliferation test (BeLPT) test that is performed on blood. (ucsfhealth.org)
  • It is also recommended that all beryllium-exposed individuals be tested for beryllium sensitivity (BeS) with a blood test called beryllium lymphocyte proliferation test (BeLPT). (clevelandclinic.org)
  • There are about 30 recognized minerals containing beryllium, including beryl (Al 2 Be 3 Si 6 O 18 , a beryllium aluminum silicate), bertrandite (Be 4 Si 2 O 7 (OH) 2 , a beryllium silicate), phenakite (Be 2 SiO 4 ), and chrysoberyl (BeAl 2 O 4 ). (britannica.com)
  • The most important are beryl (beryllium aluminium silicate) and bertrandite (beryllium silicate). (rsc.org)
  • Beryllium is a relatively rare element in the earth's crust it can be found in minerals such as bertrandite, chrysoberyl, phenakite, and beryl, its most common source for commercial production. (americanelements.com)
  • Beryllium is found in 30 different minerals, the most important of which are bertrandite, beryl, chrysoberyl, and phenacite. (earth.com)
  • Beryllium can be measured in samples from your blood, in humans because very little beryllium is absorbed from the urine, skin, or lungs. (cdc.gov)
  • If beryllium dust or fumes are inhaled, it can lead to an incurable inflammation of the lungs called berylliosis. (rsc.org)
  • Beryllium can damage lungs, bones and the digestive system. (ewg.org)
  • The gemstones beryl and emerald are both forms of beryllium aluminium silicate, Be 3 Al 2 (SiO 3 ) 6 . (rsc.org)
  • For many years, beryllium was strategically so important that the government and the beryllium industry fought hard against a more protective standard,' Michaels said. (chicagotribune.com)
  • Determinants of progression from BeS to CBD are uncertain, but higher beryllium exposures and the presence of a genetic variant in the HLA-DP β-chain appear to increase the risk. (springer.com)
  • The lawmakers asked that GAO identify government uses of beryllium in the past and the present, identify the extent that exposures have exceeded standards established either by the former Atomic Energy Commission or the current Occupational Safety and Health Administration, and describe changes in the metal's use. (toledoblade.com)
  • On this picture you see a run#2 Steve Ku LF2XT and a BeCu (Beryllium copper / Beryllium Bronze) LF2XT. (candlepowerforums.com)
  • Both copper beryllium and beryllium-free copper producers are vehement and adamant about why their products are better and safer than the others out there - and between MSDSs, newspaper articles and media hype, separating fact and fiction can be a confusing and time-consuming venture. (moldmakingtechnology.com)
  • Nate Gildersleeve, director of technology for NGK Metals Corp. (Reading, PA) - a manufacturer of copper beryllium products - urges people to be cautious when dealing with copper beryllium, but not to panic. (moldmakingtechnology.com)
  • Carlos Cruz Wilson, a metals specialist for Houston, TX-based National Bronze and Metals, Inc. - a producer and distributor of a range of copper and copper alloys in various forms and shapes - also feels the public outcry over copper beryllium is mainly caused by ignorance. (moldmakingtechnology.com)
  • Copper beryllium has high strength, conductivity and resistance to elevated temperatures, which makes it particularly useful in the automotive electronics industry, including ABS, airbags and collision avoidance radars, as well as its alloys being used in the Information and Communication industry. (mmta.co.uk)
  • It occurs when a person inhales dust or fumes of beryllium - a naturally occurring lightweight material - and has become sensitized to this material. (ucsfhealth.org)
  • Beryllium dust and fumes can be breathed-in. (cdc.gov)
  • Fumes containing beryllium occur with high temperatures and with some chemical processes. (cdc.gov)
  • Both dust and fumes can be present long after the beryllium work has finished. (cdc.gov)
  • The process of melting, grinding, polishing and finishing certain dental materials can produce beryllium-containing particles, fumes, mists and solutions, which may be harmful depending on the intensity, duration, frequency and route of exposure. (osap.org)
  • According to the Department of Energy (DOE) Training Reference for Beryllium Workers and Managers/Supervisors Participant Manual entitled Communicating Health Risks, Working Safely With Beryllium , the most significant disadvantage of beryllium as an industrial material is the toxicity of its dust, fumes and soluble salts. (moldmakingtechnology.com)
  • The Department of Health and Human Services (DHHS) and the International Agency for Research on Cancer (IARC) have determined that beryllium is a human carcinogen. (cdc.gov)
  • The EPA has determined that beryllium is a probable human carcinogen. (cdc.gov)
  • Beryllium is also a probably human carcinogen, as long term exposure can increase the risk of developing lung cancer. (sourcewatch.org)
  • The lawmakers said recent media articles have raised questions about the health and safety risks from exposure to beryllium dust and the standards to minimize risk. (toledoblade.com)
  • Since the contaminated area had not been tested for the presence of beryllium since 2001, everyone who has entered the restricted-access area since then is being alerted, he said. (cnn.com)
  • The early history of beryllium diffusion in sapphire, starting with the 2001 appearance of large numbers of padparadscha sapphires in the Thai gem market. (ruby-sapphire.com)
  • The US Occupational Health and Safety Administration has just issued a new permissible exposure limit (PEL) standard dramatically reducing the allowed workroom air concentration of beryllium. (springer.com)
  • Currently, OSHA's eight-hour permissible exposure limit for beryllium is 2.0 micrograms per cubic meter of air. (lexology.com)
  • The new rule replaces an outdated permissible exposure limit for beryllium that was ill-equipped to protect worker health. (ecmag.com)
  • Reduce the permissible exposure limit for beryllium to 0.2 micrograms per cubic meter of air, averaged over 8 hours. (ecmag.com)
  • It should be stressed that due to the nature of the operations, we believed it to be unlikely we would find any measurable airborne beryllium over the California PEL (permissible exposure limit) of 0.2 micrograms of beryllium per cubic meter of air (alevel that has been demonstrated to be effective in presenting health effects). (ohsonline.com)
  • Beryllium is one of the lightest metals, with unique mechanical, physical, and nuclear properties that allow major applications in the aircraft and aerospace industries as well as for nuclear reactors and defense. (springer.com)
  • Beryllium is also used in nuclear reactors as a reflector or moderator of neutrons. (rsc.org)
  • Beryllium nitride is used to produce the isotope carbon-14 and in the manufacturing process of refractory ceramics and nuclear reactors. (reference.com)
  • The nuclear power industry uses beryllium in nuclear reactors as a neutron reflector and moderator. (newworldencyclopedia.org)
  • Require employers to use engineering and work practice controls (such as ventilation or enclosure) to limit worker exposure to beryllium, provide respirators when controls cannot adequately limit exposure, limit worker access to high-exposure areas, develop a written exposure control plan and train workers on beryllium hazards. (ecmag.com)
  • Using beryllium doesn't necessarily mean worker exposure to beryllium. (ohsonline.com)
  • About 20 years ago, the National Institute for Occupational Safety and Health (NIOSH) did a study that included workers from seven beryllium processing plants. (cdc.gov)
  • This guide addresses practical occupational safety and health issues during cleaning and decontamination of workplaces where beryllium is present. (ilo.org)
  • The U.S. Department of Labor has proposed delaying the effective date of the U.S. Occupational Safety and Health Administration's beryllium rule again, in keeping with President Donald Trump's regulatory freeze. (businessinsurance.com)
  • WASHINGTON - The U.S. Department of Labor's Occupational Safety and Health Administration today announced a proposed rule that would modify the agency's recent beryllium standards for the construction and shipyard sectors. (dol.gov)
  • Much beryllium is used as a low-percentage component of hard alloys , especially with copper as the main constituent but also with nickel - and iron -based alloys , for products such as springs. (britannica.com)
  • Beryllium is used in alloys with copper or nickel to make gyroscopes, springs, electrical contacts, spot-welding electrodes and non-sparking tools. (rsc.org)
  • Alloys of beryllium with copper or nickel are strong and wear-resistant, and are widely used in the manufacture of such items as computer parts, gyroscopes, electrodes, springs, and nonsparking tools. (newworldencyclopedia.org)
  • Beryllium-copper alloys are used as contacts and connectors, switches, relays, and shielding for everything from cell phones to thermostats, and beryllium-nickel alloys excel in producing wear-resistant and shape-retaining high-temperature springs. (usgs.gov)
  • Metals such as copper, iron, aluminum and nickel are often alloyed with beryllium to give them extra strength. (reference.com)
  • Description: additional base metals such as Zinc, Silicon, Tin, Nickel, Chromium and Beryllium among others, to produce Brasses and Bronzed that are used to make a wide variety of artistic, jewelry, marine and industrial products. (globalspec.com)
  • Dr. Lisa Maier, head of the occupational and environmental sciences division at National Jewish Health , in Denver, conducted research with colleagues in which chronic beryllium exposure at the eight-hour limit set by DOE -- 0.2 micrograms of beryllium dust per cubic meter of air: roughly a pencil tip in a box 80 feet tall and the size of a football field -- was not protective of many people. (propublica.org)
  • That standard called for workers to be exposed to no more than 2 micrograms of beryllium dust per cubic meter of air, an amount roughly equal to a marble-size piece of beryllium distributed evenly throughout a football stadium. (chicagotribune.com)
  • Establish a new short-term exposure limit for beryllium of 2.0 micrograms per cubic meter of air, over a 15--minute sampling period. (ecmag.com)
  • With our analytical ability, we were able to detect as little as 0.007 micrograms of beryllium on a sample and collected over a cubic meter of air on all of the samples. (ohsonline.com)
  • Beryllium is a chemical element with the symbol Be and atomic number 4. (wikipedia.org)
  • Because of its low atomic weight , beryllium transmits X-rays 17 times as well as aluminum and has been extensively used in making windows for X-ray tubes. (britannica.com)
  • 1999: __After five decades of denial, the U.S. government owns up to poisoning thousands of defense, aerospace and atomic energy workers by exposing them to beryllium. (wired.com)
  • Beryllium (chemical symbol Be , atomic number 4) ranks among the lightest of all known metals . (newworldencyclopedia.org)
  • Beryllium (atomic symbol: Be, atomic number: 4) is a Block S, Group 2, Period 2 element with an atomic weight of 9.012182. (americanelements.com)
  • With an atomic number of 4, beryllium has four electrons: two electron shells surround the atom's nucleus and two electrons in each shell. (reference.com)
  • Like aluminium halides, beryllium halides tend to be covalent due to the small atomic radius and high charge density. (sciencemadness.org)
  • Of beryllium's 10 isotopes, only beryllium-9 is stable. (earth.com)
  • An estimated 300,000 workers are exposed to beryllium during ore extraction, processing, and manufacturing. (springer.com)
  • Beryllium is the lightest member of the alkaline earth metals family. (encyclopedia.com)
  • Unlike the other group 2 metals, beryllium does not react with hydrogen. (wikipedia.org)
  • Among the light metals , beryllium has one of the highest melting points . (newworldencyclopedia.org)
  • Thick film metallization operations have a potential for generating measurable airborne beryllium. (ohsonline.com)
  • Maintenance personnel were also evaluated based on the potential to generate airborne beryllium particulate during maintenance on equipment and other non-routine tasks. (ohsonline.com)
  • This operation and many others we're in the process of characterizing are typical of downstream users: They use beryllium products but don't create measurable airborne beryllium particulate. (ohsonline.com)
  • Increased CBD and beryllium sensitivity have been found in many other studies. (cdc.gov)
  • The lab has offered all former employees and visitors to the facility a beryllium sensitivity test. (lamonitor.com)
  • Cutaneous hypersensitivity due to beryllium, a study of thirteen cases. (springer.com)
  • Beryllium-Induced Hypersensitivity: Genetic Susceptibility and Neoantigen Generation. (nih.gov)
  • I auditioned all three of Periodic's IEM offerings: the $99 Mg (Magnesium), the $199 Ti (Titanium), and the top-shelf $299 Be (Beryllium). (hometheaterreview.com)
  • In fact, if I weren't comparing it to its own big brothers (the Titanium and Beryllium), I would give the Magnesium IEM nothing but praise. (hometheaterreview.com)
  • Experiments were undertaken to determine whether beryllium could replace magnesium in a growing organism. (osti.gov)
  • This was stimulated by the several known growth effects of beryllium in animals and by the fact that beryllium apparently competes with magnesium for animal alkaline phosphatases. (osti.gov)
  • The following findings are noted: (1) beryllium can reduce the magnesium requirement of plants by some 60% within a certain range of magnesium deficiency. (osti.gov)
  • 2) The residual obligatory magnesium requirements is probably accounted for by chlorophyll since beryllium appears to have no primary effect on chlorophyll or chlorophyll production. (osti.gov)
  • The effect of beryllium on plant growth} author = {Hoagland, M B} abstractNote = {Experiments were undertaken to determine whether beryllium could replace magnesium in a growing organism. (osti.gov)
  • example needed] Tools made of beryllium copper alloys are strong and hard and do not create sparks when they strike a steel surface. (wikipedia.org)
  • Because JWST will face a temperature of 240 degrees Celsius (30 kelvins), the mirror is made of beryllium, a material capable of handling extreme cold better than glass. (earth.com)
  • Six radioactive isotopes of beryllium are known also. (encyclopedia.com)
  • None of the isotopes of beryllium has any commercial use. (encyclopedia.com)
  • Both stable and unstable isotopes of beryllium are created in stars, but the radioisotopes do not last long. (wikipedia.org)
  • The order, which calls for delivery of 4.4 tonnes of beryllium beginning late in the third quarter of 2006 and expected to be completed in the first half of 2007, came from the European Fusion Development Agreement, the agency that provides funding to JET. (theengineer.co.uk)
  • ITER will operate with beryllium-bearing components and in particular, the plasma-facing first wall of the blanket , which will require about 12 tonnes of beryllium to cover a surface of approximately 610 m². (iter.org)
  • The legal limit for beryllium, established in 1992, was based on a toxicity study in laboratory animals published in 1970. (ewg.org)