Cadmium Compounds: Inorganic compounds that contain cadmium as an integral part of the molecule.Cadmium: An element with atomic symbol Cd, atomic number 48, and atomic weight 114. It is a metal and ingestion will lead to CADMIUM POISONING.Cadmium Poisoning: Poisoning occurring after exposure to cadmium compounds or fumes. It may cause gastrointestinal syndromes, anemia, or pneumonitis.Cadmium Chloride: A cadmium halide in the form of colorless crystals, soluble in water, methanol, and ethanol. It is used in photography, in dyeing, and calico printing, and as a solution to precipitate sulfides. (McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed)Cadmium Radioisotopes: Unstable isotopes of cadmium that decay or disintegrate emitting radiation. Cd atoms with atomic weights 103-105, 107, 109, 115, and 117-119 are radioactive cadmium isotopes.Metallothionein: A low-molecular-weight (approx. 10 kD) protein occurring in the cytoplasm of kidney cortex and liver. It is rich in cysteinyl residues and contains no aromatic amino acids. Metallothionein shows high affinity for bivalent heavy metals.Metals, Heavy: Metals with high specific gravity, typically larger than 5. They have complex spectra, form colored salts and double salts, have a low electrode potential, are mainly amphoteric, yield weak bases and weak acids, and are oxidizing or reducing agents (From Grant & Hackh's Chemical Dictionary, 5th ed)Lead: A soft, grayish metal with poisonous salts; atomic number 82, atomic weight 207.19, symbol Pb. (Dorland, 28th)Zinc: A metallic element of atomic number 30 and atomic weight 65.38. It is a necessary trace element in the diet, forming an essential part of many enzymes, and playing an important role in protein synthesis and in cell division. Zinc deficiency is associated with ANEMIA, short stature, HYPOGONADISM, impaired WOUND HEALING, and geophagia. It is known by the symbol Zn.Phytochelatins: Poly-glutathione peptides composed of (Glu-Cys)n-Gly where n is two to seven. They are biosynthesized by glutathione gamma-glutamylcysteinyltransferase and are found in many PLANTS; YEASTS; and algae. They sequester HEAVY METALS.Spectrophotometry, Atomic: Spectrophotometric techniques by which the absorption or emmision spectra of radiation from atoms are produced and analyzed.Environmental Pollutants: Substances or energies, for example heat or light, which when introduced into the air, water, or land threaten life or health of individuals or ECOSYSTEMS.Antimony: A metallic element that has the atomic symbol Sb, atomic number 51, and atomic weight 121.75. It is used as a metal alloy and as medicinal and poisonous salts. It is toxic and an irritant to the skin and the mucous membranes.Substance P: An eleven-amino acid neurotransmitter that appears in both the central and peripheral nervous systems. It is involved in transmission of PAIN, causes rapid contractions of the gastrointestinal smooth muscle, and modulates inflammatory and immune responses.Antimony Potassium Tartrate: A schistosomicide possibly useful against other parasites. It has irritant emetic properties and may cause lethal cardiac toxicity among other adverse effects.Antimony Sodium Gluconate: Antimony complex where the metal may exist in either the pentavalent or trivalent states. The pentavalent gluconate is used in leishmaniasis. The trivalent gluconate is most frequently used in schistosomiasis.Inorganic Chemicals: A broad class of substances encompassing all those that do not include carbon and its derivatives as their principal elements. However, carbides, carbonates, cyanides, cyanates, and carbon disulfide are included in this class.Chemical EngineeringEncyclopedias as Topic: 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)EncyclopediasPhosphorus: A non-metal element that has the atomic symbol P, atomic number 15, and atomic weight 31. It is an essential element that takes part in a broad variety of biochemical reactions.Acrylonitrile: A highly poisonous compound used widely in the manufacture of plastics, adhesives and synthetic rubber.Acetic Anhydrides: Compounds used extensively as acetylation, oxidation and dehydrating agents and in the modification of proteins and enzymes.Ethanolamine: A viscous, hygroscopic amino alcohol with an ammoniacal odor. It is widely distributed in biological tissue and is a component of lecithin. It is used as a surfactant, fluorimetric reagent, and to remove CO2 and H2S from natural gas and other gases.AcrylatesFungicides, Industrial: Chemicals that kill or inhibit the growth of fungi in agricultural applications, on wood, plastics, or other materials, in swimming pools, etc.Dictionaries, MedicalDictionaries as Topic: Lists of words, usually in alphabetical order, giving information about form, pronunciation, etymology, grammar, and meaning.OregonState Health Plans: State plans prepared by the State Health Planning and Development Agencies which are made up from plans submitted by the Health Systems Agencies and subject to review and revision by the Statewide Health Coordinating Council.Hazardous Substances: 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.Infant, Newborn: An infant during the first month after birth.Medicaid: Federal program, created by Public Law 89-97, Title XIX, a 1965 amendment to the Social Security Act, administered by the states, that provides health care benefits to indigent and medically indigent persons.Air Pollution: The presence of contaminants or pollutant substances in the air (AIR POLLUTANTS) that interfere with human health or welfare, or produce other harmful environmental effects. The substances may include GASES; PARTICULATE MATTER; or volatile ORGANIC CHEMICALS.Air Pollutants: Any substance in the air which could, if present in high enough concentration, harm humans, animals, vegetation or material. Substances include GASES; PARTICULATE MATTER; and volatile ORGANIC CHEMICALS.Air Pollutants, Occupational: Air pollutants found in the work area. They are usually produced by the specific nature of the occupation.Air Pollution, Indoor: The contamination of indoor air.Oenothera: A plant genus of the family ONAGRACEAE. Members contain oenotheins.Decontamination: The removal of contaminating material, such as radioactive materials, biological materials, or CHEMICAL WARFARE AGENTS, from a person or object.Pesticide Residues: Pesticides or their breakdown products remaining in the environment following their normal use or accidental contamination.Water Pollutants, Chemical: Chemical compounds which pollute the water of rivers, streams, lakes, the sea, reservoirs, or other bodies of water.Taste: The ability to detect chemicals through gustatory receptors in the mouth, including those on the TONGUE; the PALATE; the PHARYNX; and the EPIGLOTTIS.Baltic States: The collective name for the republics of ESTONIA; LATVIA; and LITHUANIA on the eastern shore of the Baltic Sea. (Webster's New Geographical Dictionary, 1988, p111)Nuclear Power Plants: Facilities that convert NUCLEAR ENERGY into electrical energy.Wood: A product of hard secondary xylem composed of CELLULOSE, hemicellulose, and LIGNANS, that is under the bark of trees and shrubs. It is used in construction and as a source of CHARCOAL and many other products.Rhizophoraceae: A plant family of the order Rhizophorales, subclass Rosidae, class Magnoliopsida, that includes mangrove trees.RNA, Ribosomal, 16S: Constituent of 30S subunit prokaryotic ribosomes containing 1600 nucleotides and 21 proteins. 16S rRNA is involved in initiation of polypeptide synthesis.DNA, Ribosomal: DNA sequences encoding RIBOSOMAL RNA and the segments of DNA separating the individual ribosomal RNA genes, referred to as RIBOSOMAL SPACER DNA.Actinomycetales: An order of gram-positive, primarily aerobic BACTERIA that tend to form branching filaments.Base Composition: The relative amounts of the PURINES and PYRIMIDINES in a nucleic acid.Confined Spaces: A space which has limited openings for entry and exit combined with unfavorable natural ventilation such as CAVES, refrigerators, deep tunnels, pipelines, sewers, silos, tanks, vats, mines, deep trenches or pits, vaults, manholes, chimneys, etc.Occupational Diseases: Diseases caused by factors involved in one's employment.Occupational Health: The promotion and maintenance of physical and mental health in the work environment.Occupational Health Services: Health services for employees, usually provided by the employer at the place of work.Toxicology: The science concerned with the detection, chemical composition, and biological action of toxic substances or poisons and the treatment and prevention of toxic manifestations.European Union: The collective designation of three organizations with common membership: the European Economic Community (Common Market), the European Coal and Steel Community, and the European Atomic Energy Community (Euratom). It was known as the European Community until 1994. It is primarily an economic union with the principal objectives of free movement of goods, capital, and labor. Professional services, social, medical and paramedical, are subsumed under labor. The constituent countries are Austria, Belgium, Denmark, Finland, France, Germany, Greece, Ireland, Italy, Luxembourg, Netherlands, Portugal, Spain, Sweden, and the United Kingdom. (The World Almanac and Book of Facts 1997, p842)EuropeLaw Enforcement: Organized efforts to insure obedience to the laws of a community.World Health Organization: A specialized agency of the United Nations designed as a coordinating authority on international health work; its aim is to promote the attainment of the highest possible level of health by all peoples.Advance Directives: Declarations by patients, made in advance of a situation in which they may be incompetent to decide about their own care, stating their treatment preferences or authorizing a third party to make decisions for them. (Bioethics Thesaurus)Tobacco, Smokeless: Powdered or cut pieces of leaves of NICOTIANA TABACUM which are inhaled through the nose, chewed, or stored in cheek pouches. It includes any product of tobacco that is not smoked.ArchivesBiological Science Disciplines: All of the divisions of the natural sciences dealing with the various aspects of the phenomena of life and vital processes. The concept includes anatomy and physiology, biochemistry and biophysics, and the biology of animals, plants, and microorganisms. It should be differentiated from BIOLOGY, one of its subdivisions, concerned specifically with the origin and life processes of living organisms.Periodicals as Topic: A publication issued at stated, more or less regular, intervals.PubMed: A bibliographic database that includes MEDLINE as its primary subset. It is produced by the National Center for Biotechnology Information (NCBI), part of the NATIONAL LIBRARY OF MEDICINE. PubMed, which is searchable through NLM's Web site, also includes access to additional citations to selected life sciences journals not in MEDLINE, and links to other resources such as the full-text of articles at participating publishers' Web sites, NCBI's molecular biology databases, and PubMed Central.Tellurium: Tellurium. An element that is a member of the chalcogen family. It has the atomic symbol Te, atomic number 52, and atomic weight 127.60. It has been used as a coloring agent and in the manufacture of electrical equipment. Exposure may cause nausea, vomiting, and CNS depression.Quantum Dots: Nanometer sized fragments of semiconductor crystalline material which emit PHOTONS. The wavelength is based on the quantum confinement size of the dot. They can be embedded in MICROBEADS for high throughput ANALYTICAL CHEMISTRY TECHNIQUES.Mercury Compounds: Inorganic compounds that contain mercury as an integral part of the molecule.Plastics: Polymeric materials (usually organic) of large molecular weight which can be shaped by flow. Plastic usually refers to the final product with fillers, plasticizers, pigments, and stabilizers included (versus the resin, the homogeneous polymeric starting material). (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)TaiwanChina: A country spanning from central Asia to the Pacific Ocean.Fraud: Exploitation through misrepresentation of the facts or concealment of the purposes of the exploiter.Surgery, Plastic: The branch of surgery concerned with restoration, reconstruction, or improvement of defective, damaged, or missing structures.Williams Syndrome: A disorder caused by hemizygous microdeletion of about 28 genes on chromosome 7q11.23, including the ELASTIN gene. Clinical manifestations include SUPRAVALVULAR AORTIC STENOSIS; MENTAL RETARDATION; elfin facies; impaired visuospatial constructive abilities; and transient HYPERCALCEMIA in infancy. The condition affects both sexes, with onset at birth or in early infancy.San FranciscoParanoid Behavior: Behavior exhibited by individuals who are overly suspicious, but without the constellation of symptoms characteristic of paranoid personality disorder or paranoid type of schizophrenia.Bays: An area of water mostly surrounded by land, usually smaller than a gulf, and affording access to the sea.IsraelResins, Plant: Flammable, amorphous, vegetable products of secretion or disintegration, usually formed in special cavities of plants. They are generally insoluble in water and soluble in alcohol, carbon tetrachloride, ether, or volatile oils. They are fusible and have a conchoidal fracture. They are the oxidation or polymerization products of the terpenes, and are mixtures of aromatic acids and esters. Most are soft and sticky, but harden after exposure to cold. (From Grant & Hackh's Chemical Dictionary, 5th ed & Dorland, 28th ed)Food Packaging: Containers, packaging, and packaging materials for processed and raw foods and beverages. It includes packaging intended to be used for storage and also used for preparation of foods such as microwave food containers versus COOKING AND EATING UTENSILS. Packaging materials may be intended for food contact or designated non-contact, for example, shipping containers. FOOD LABELING is also available.Product Packaging: Form in which product is processed or wrapped and labeled. PRODUCT LABELING is also available.Patents as Topic: Exclusive legal rights or privileges applied to inventions, plants, etc.Drug Packaging: Containers, packaging, and packaging materials for drugs and BIOLOGICAL PRODUCTS. These include those in ampule, capsule, tablet, solution or other forms. Packaging includes immediate-containers, secondary-containers, and cartons. In the United States, such packaging is controlled under the Federal Food, Drug, and Cosmetic Act which also stipulates requirements for tamper-resistance and child-resistance. Similar laws govern use elsewhere. (From Code of Federal Regulations, 21 CFR 1 Section 210, 1993) DRUG LABELING is also available.Trace Elements: A group of chemical elements that are needed in minute quantities for the proper growth, development, and physiology of an organism. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)Chloral Hydrate: A hypnotic and sedative used in the treatment of INSOMNIA.Metals: Electropositive chemical elements characterized by ductility, malleability, luster, and conductance of heat and electricity. They can replace the hydrogen of an acid and form bases with hydroxyl radicals. (Grant & Hackh's Chemical Dictionary, 5th ed)Directories as Topic: Lists of persons or organizations, systematically arranged, usually in alphabetic or classed order, giving address, affiliations, etc., for individuals, and giving address, officers, functions, and similar data for organizations. (ALA Glossary of Library and Information Science, 1983)Propaganda: The deliberate attempt to influence attitudes and beliefs for furthering one's cause or damaging an opponent's cause.IndiaMyanmar: A republic of southeast Asia, northwest of Thailand, long familiar as Burma. Its capital is Yangon, formerly Rangoon. Inhabited by people of Mongolian stock and probably of Tibetan origin, by the 3d century A.D. it was settled by Hindus. The modern Burmese state was founded in the 18th century but was in conflict with the British during the 19th century. Made a crown colony of Great Britain in 1937, it was granted independence in 1947. In 1989 it became Myanmar. The name comes from myanma, meaning the strong, as applied to the Burmese people themselves. (From Webster's New Geographical Dictionary, 1988, p192 & Room, Brewer's Dictionary of Names, 1992, p367)DirectoryTensile Strength: The maximum stress a material subjected to a stretching load can withstand without tearing. (McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed, p2001)PolyvinylsEicosanoic Acids: 20-carbon saturated monocarboxylic acids.Polymers: Compounds formed by the joining of smaller, usually repeating, units linked by covalent bonds. These compounds often form large macromolecules (e.g., BIOPOLYMERS; PLASTICS).Research Report: Detailed account or statement or formal record of data resulting from empirical inquiry.United StatesUnited States Dept. of Health and Human Services: A cabinet department in the Executive Branch of the United States Government concerned with administering those agencies and offices having programs pertaining to health and human services.Healthy People Programs: Healthy People Programs are a set of health objectives to be used by governments, communities, professional organizations, and others to help develop programs to improve health. It builds on initiatives pursued over the past two decades beginning with the 1979 Surgeon General's Report, Healthy People, Healthy People 2000: National Health Promotion and Disease Prevention Objectives, and Healthy People 2010. These established national health objectives and served as the basis for the development of state and community plans. These are administered by the Office of Disease Prevention and Health Promotion (ODPHP). Similar programs are conducted by other national governments.Pyrazolones: Compounds with a five-membered heterocyclic ring with two nitrogens and a keto OXYGEN. Some are inhibitors of TNF-ALPHA production.ThiadiazolesMagnetic Resonance Spectroscopy: Spectroscopic method of measuring the magnetic moment of elementary particles such as atomic nuclei, protons or electrons. It is employed in clinical applications such as NMR Tomography (MAGNETIC RESONANCE IMAGING).

Cloning and expression of cadD, a new cadmium resistance gene of Staphylococcus aureus. (1/228)

A cadmium resistance gene, designated cadD, has been identified in and cloned from the Staphylococcus aureus plasmid pRW001. The gene is part of a two-component operon which contains the resistance gene cadD and an inactive regulatory gene, cadX*. A high degree of sequence similarity was observed between cadD and the cadB-like gene from S. lugdunensis, but no significant similarity was found with either cadA or cadB from the S. aureus plasmids pI258 and pII147. The positive regulatory gene cadX* is identical to cadX from pLUG10 over a stretch of 78 codons beginning at the N terminus, but it is truncated at this point and inactive. Sequence analysis showed that the cadmium resistance operon resides on a 3,972-bp element that is flanked by direct repeats of IS257. The expression of cadD in S. aureus and Bacillus subtilis resulted in low-level resistance to cadmium; in contrast, cadA and cadB from S. aureus induced higher level resistance. However, when the truncated version of cadX contained in pRW001 is complemented in trans with cadX from plasmid pLUG10, resistance increased approximately 10-fold suggesting that the cadmium resistance operons from pRW001 and pLUG10 are evolutionarily related. Moreover, the truncated version of cadX contained in pRW001 is nonfunctional and may have been generated by deletion during recombination to acquire the cadmium resistance element.  (+info)

Evaluation of three gamma detectors for intraoperative detection of tumors using 111In-labeled radiopharmaceuticals. (2/228)

Attempts to detect tumors with intraoperative scintillation using tumor-binding radiopharmaceuticals have intensified recently. In some cases previously unknown lesions were found, but in most cases no additional lesions were detected. In this study the physical characteristics of three detector systems and their ability to detect tumors through accumulation of an 111In-labeled radiopharmaceutical were investigated. The first was a sodium iodide (NaI[TI]) detector; the second, a cesium iodide (CsI[TI]) detector; and the third, a cadmium telluride (CdTe) detector. METHODS: A body phantom and tumor phantoms (diameter 5-20 mm) made of water, agarose gel or epoxy with a density and attenuation coefficient similar to those of soft tissue were used to simulate a clinical situation. The activity concentration in the body phantom was based on reported values of 111In-octreotide in normal tissue in humans. The 111In activity concentration in the tumor phantoms varied from 3 to 80 times the 111In activity concentration in the body phantom. Data were processed to determine tumor detection levels. RESULTS: The NaI(TI) detector showed the lowest values for full width at half maximum because this detector had the best collimation, leading to a high ratio between counts from tumor and counts from background, i.e., small tumors could be detected. Because of high efficiency, the CsI(TI) detector sometimes required a somewhat shorter acquisition time to produce a statistically significant difference between tumor phantom and background. For deep-lying tumors the NaI(TI) detector was superior, whereas the CdTe detector was best suited for superficial tumors with a high activity concentration in the underlying tissue. CONCLUSION: At a maximum acquisition time of 30 s, almost all superficial tumors with a diameter of 10 mm or larger were detected if the ratio between the 111In concentration in the tumor and the 111In concentration in the background exceeded 3. However, in clinical situations, biologic variations in the uptake of 111In-octreotide in tumors and in normal tissue makes difficult the determination of a distinct detection level. For such clinical conditions, the NaI(TI) detector is the best choice because it has good resolution despite a lower efficiency. Documentation of detector characteristics is important so that clinicians can make an adequate device in relation to tumor location and receptor expression.  (+info)

A new Klebsiella planticola strain (Cd-1) grows anaerobically at high cadmium concentrations and precipitates cadmium sulfide. (3/228)

Heavy metal resistance by bacteria is a topic of much importance to the bioremediation of contaminated soils and sediments. We report here the isolation of a highly cadmium-resistant Klebsiella planticola strain, Cd-1, from reducing salt marsh sediments. The strain grows in up to 15 mM CdCl(2) under a wide range of NaCl concentrations and at acidic or neutral pH. In growth medium amended with thiosulfate, it precipitated significant amounts of cadmium sulfide (CdS), as confirmed by x-absorption spectroscopy. In comparison with various other strains tested, Cd-1 is superior for precipitating CdS in cultures containing thiosulfate. Thus, our results suggest that Cd-1 is a good candidate for the accelerated bioremediation of systems contaminated by high levels of cadmium.  (+info)

Azuki bean cells are hypersensitive to cadmium and do not synthesize phytochelatins. (4/228)

Suspension-cultured cells of azuki bean (Vigna angularis) as well as the original root tissues were hypersensitive to Cd (<10 microM). Repeated subculturings with a sublethal level of Cd (1-10 microM) did not affect the subsequent response of cells to inhibitory levels of Cd (10-100 microM). The azuki bean cells challenged to Cd did not contain phytochelatin (PC) peptides, unlike tomato (Lycopersicon esculentum) cells that have a substantial tolerance to Cd (>100 microM). Both of the cell suspensions contained a similar level of reduced glutathione (GSH) when grown in the absence of Cd. Externally applied GSH to azuki bean cells recovered neither Cd tolerance nor PC synthesis of the cells. Furthermore, enzyme assays in vitro revealed that the protein extracts of azuki bean cells had no activity converting GSH to PCs, unlike tomato. These results suggest that azuki bean cells are lacking in the PC synthase activity per se, hence being Cd hypersensitive. We concluded that the PC synthase has an important role in Cd tolerance of suspension-cultured cells.  (+info)

Metabolic engineering of an aerobic sulfate reduction pathway and its application to precipitation of cadmium on the cell surface. (5/228)

The conversion of sulfate to an excess of free sulfide requires stringent reductive conditions. Dissimilatory sulfate reduction is used in nature by sulfate-reducing bacteria for respiration and results in the conversion of sulfate to sulfide. However, this dissimilatory sulfate reduction pathway is inhibited by oxygen and is thus limited to anaerobic environments. As an alternative, we have metabolically engineered a novel aerobic sulfate reduction pathway for the secretion of sulfides. The assimilatory sulfate reduction pathway was redirected to overproduce cysteine, and excess cysteine was converted to sulfide by cysteine desulfhydrase. As a potential application for this pathway, a bacterium was engineered with this pathway and was used to aerobically precipitate cadmium as cadmium sulfide, which was deposited on the cell surface. To maximize sulfide production and cadmium precipitation, the production of cysteine desulfhydrase was modulated to achieve an optimal balance between the production and degradation of cysteine.  (+info)

Structure and dynamics of hnRNP-labelled nuclear bodies induced by stress treatments. (6/228)

We have previously described HAP, a novel hnRNP protein that is identical both to SAF-B, a component of the nuclear scaffold, and to HET, a transcriptional regulator of the gene for heat shock protein 27. After heat shock, HAP is recruited to a few nuclear bodies. Here we report the characterisation of these bodies, which are distinct from other nuclear components such as coiled bodies and speckles. The formation of HAP bodies is part of a general cell response to stress agents, such as heat shock and cadmium sulfate, which also affect the distribution of hnRNP protein M. Electron microscopy demonstrates that in untreated cells, similar to other hnRNP proteins, HAP is associated to perichromatin fibrils. Instead, in heat shocked cells the protein is preferentially associated to clusters of perichromatin granules, which correspond to the HAP bodies observed in confocal microscopy. Inside such clusters, perichromatin granules eventually merge into a highly packaged 'core'. HAP and hnRNP M mark different districts of these structures. HAP is associated to perichromatin granules surrounding the core, while hnRNP M is mostly detected within the core. BrU incorporation experiments demonstrate that no transcription occurs within the stress-induced clusters of perichromatin granules, which are depots for RNAs synthesised both before and after heat shock.  (+info)

The NADPH oxidase inhibitors iodonium diphenyl and cadmium sulphate inhibit hypoxic pulmonary vasoconstriction in isolated rat pulmonary arteries. (7/228)

Interest surrounds the role of an NADPH oxidase-like enzyme in hypoxic pulmonary vasoconstriction (HPV). We have studied the effects of the NADPH oxidase inhibitors iodonium diphenyl (ID) and cadmium sulphate (CdSO4) upon HPV of isolated rat pulmonary arteries (n = 73, internal diameter 545 +/- 23 microm). Vessels were preconstricted with prostaglandin F2alpha (PGF2alpha, 0.5 or 5 microM) prior to a hypoxic challenge. ID (10 or 50 microM), CdSO4 (100 microM) or vehicle (50 microl) was added for 30 min before re-exposure to PGF2alpha and hypoxia. ID and CdSO4 significantly inhibited HPV. In vessels preconstricted with 5 microM PGF2alpha, ID (10 and 50 microM) reduced HPV from 37.4 +/- 5.6 % to 9.67 +/- 4.4 % of the contractile response elicited by 80 mM KCl (P<0.05) and from 30.1 +/- 5.0 % to 0.63 +/- 0.6% 80 mM KCl response (P<0.01), respectively. CdSO4 (100 microM) reduced HPV from 29.4 +/-4.0 % to 17.1 +/- 2.2% 80 mM KCl response (P<0.05). In vessels preconstricted with 0.5 microM PGF2alpha, ID (10 and 50 microM) reduced HPV from 16.0 +/- 3.15% to 3.36 +/- 1.44 % 80 mM KCl response (P<0.01) and from 15.0 +/- 1.67 % to 2.82 +/- 1.40 % 80 mM KCl response (P<0.001), respectively. Constriction to PGF2alpha was potentiated by ID. ID and CdSO4, at concentrations previously shown to inhibit neutrophil NADPH oxidase, attenuate HPV in isolated rat pulmonary arteries. This suggests that an NADPH oxidase-like enzyme is involved in HPV and could act as the pulmonary oxygen sensor.  (+info)

Colloidal nanocrystal shape and size control: the case of cobalt. (8/228)

We show that a relatively simple approach for controlling the colloidal synthesis of anisotropic cadmium selenide semiconductor nanorods can be extended to the size-controlled preparation of magnetic cobalt nanorods as well as spherically shaped nanocrystals. This approach helps define a minimum feature set needed to separately control the sizes and shapes of nanocrystals. The resulting cobalt nanocrystals produce interesting two- and three-dimensional superstructures, including ribbons of nanorods.  (+info)

*Cadmium tungstate

It is toxic, as are all cadmium compounds. "NIOSH Pocket Guide to Chemical Hazards #0087". National Institute for Occupational ... Cadmium tungstate (CdWO4 or CWO), the cadmium salt of tungstic acid, is a dense, chemically inert solid which is used as a ... Cadmium tungstate films can be deposited by sol-gel technology. Cadmium tungstate nanorods can be synthesized by a hydrothermal ... Cadmium tungstate was used as a replacement of calcium tungstate in some fluoroscopes since 1940's. Very high radiopurity ...

*Cadmium nitrate

Cadmium compounds are also known to be carcinogenic. Cadmium nitrate is used for coloring glass and porcelain and as a flash ... When with caustic soda solution, cadmium oxide forms precipitate of cadmium hydroxide. Many insoluble cadmium salts are ... "Cadmium and Cadmium Compounds" in Ullmann's Encyclopedia of Industrial Chemistry, 2007 Wiley-VCH, Weinheim. doi:10.1002/ ... Cadmium nitrate describes any of the related members of a family of inorganic compound with the general formula Cd(NO3)2.xH2O. ...

*Cadmium acetate

... is prepared by treating cadmium oxide with acetic acid. The compound may also be prepared by treating cadmium ... The compound exists in anhydrous form and as a dihydrate. It forms by treating cadmium oxide with acetic acid: CdO + 2 CH3COOH ... Cadmium compounds are considered Group 1 carcinogens by the IARC. Lide, David R. (1998). Handbook of Chemistry and Physics (87 ... Cadmium acetate is the chemical compound with the formula Cd(CH3CO2)2. This colourless solid is classified coordination polymer ...

*Cadmium chloride

"Cadmium and Cadmium Compounds" National Pollutant Inventory - Cadmium and compounds. ... or from cadmium oxide or cadmium carbonate. Cadmium chloride is used for the preparation of cadmium sulfide, used as "Cadmium ... Cadmium chloride is a white crystalline compound of cadmium and chlorine, with the formula CdCl2. It is a hygroscopic solid ... Anhydrous cadmium chloride can be prepared by the action of anhydrous chlorine or hydrogen chloride gas on heated cadmium metal ...

*Organocadmium compound

An organocadmium compound is an organometallic compound containing a carbon to cadmium chemical bond. Organocadmium chemistry ... Cadmium compounds in general are considered to be carcinogen to humans by the IARC. Other chemistries of carbon with other ... Cadmium compounds are considered to be toxic. Dimethylcadmium is toxic to the kidney, the liver, the central nervous system and ... When the cadmium reagent is generated in situ from a cadmium salt, the presence of a halide salt makes the reagent much more ...

*Flux (metallurgy)

An example is the group of fluxes containing zinc, tin or cadmium compounds, usually chlorides, sometimes fluorides or ... Typical compounds used are carboxylic acids (e.g. fatty acids (most often oleic acid and stearic acid), dicarboxylic acids) and ... The compounds used include metal halides (most often zinc chloride or ammonium chloride), hydrochloric acid, phosphoric acid, ... The activators are usually either acids, or compounds that release acids at elevated temperature. The general reaction of oxide ...

*Control rod

In several such accidents, either borax (sodium borate) or a cadmium compound has been added to the system. The cadmium can be ... Alloys or compounds may also be used, such as high-boron steel, silver-indium-cadmium alloy, boron carbide, zirconium diboride ... in practice other compounds are better, such as carbides etc. or compounds with two or more neutron absorber elements together ... the corrosion of the cadmium in the acid will then generate cadmium nitrate in situ. In carbon dioxide-cooled reactors such as ...

*Cadmium cyanide

It is very toxic, along with other cadmium and cyanide compounds. Cadmium cyanide is prepared commercially by treating cadmium ... Cadmium cyanide is an inorganic compound with the formula Cd(CN)2. It is a white crystalline compound that is used in ... ISBN 0-8493-0487-3. Karl-Heinz Schulte-Schrepping, Magnus Piscator "Cadmium and Cadmium Compounds" in Ullmann's Encyclopedia of ... Like zinc cyanide, cadmium cyanide is fairly soluble in water, which is unusual for metal cyanides. The solubility increases ...

*Electronic waste in the United States

Occupationally, fumes and dust containing cadmium compounds, a known carcinogen, can be inhaled directly and long term exposure ... Cadmium: Cadmium is another metal, which is found in rechargeable batteries and "phosphor" coatings in older cathode ray tubes ... Heart disease, hypertension, and lung cancer are other health effects of cadmium inhalation. Cadmium exposure is also ... CRTs). Cadmium compounds are used in a variety of electronic products, their functions ranging from stabilizing PVC formations ...

*Occupational cancer

... arsenic and inorganic arsenic compounds, beryllium and beryllium compounds, cadmium compounds, and nickel compounds. Dusts that ...

*Energy audit

... cadmium, lead, mercury compounds, cadmium compounds and lead compounds. Energy audits initially became popular in response to ...

*Lung cancer

... cadmium and cadmium compounds, chromium(VI) compounds, beryllium and beryllium compounds, iron and steel founding, nickel ... compounds, arsenic and inorganic arsenic compounds, underground hematite mining) Some products of combustion (incomplete ...

*Cadmium

... is a component of some compound semiconductors, such as cadmium sulfide, cadmium selenide, and cadmium telluride, used ... Cadmium was used for a long time as a corrosion-resistant plating on steel, and cadmium compounds are used as red, orange and ... Cadmium burns in air to form brown amorphous cadmium oxide (CdO); the crystalline form of this compound is a dark red which ... and nitric acid dissolve cadmium by forming cadmium chloride (CdCl2), cadmium sulfate (CdSO4), or cadmium nitrate (Cd(NO3)2). ...

*ATC code D11

Empty group D11AC01 Cetrimide D11AC02 Cadmium compounds D11AC03 Selenium compounds D11AC06 Povidone-iodine D11AC08 Sulfur ... compounds D11AC09 Xenysalate D11AC30 Others D11AE01 Metandienone Empty group D11AH01 Tacrolimus D11AH02 Pimecrolimus D11AH03 ...

*Oslo Dumping Convention

... mercury and mercury compounds, cadmium and cadmium compounds, non-biodegradable plastics and other persistent materials, as ... zinc and their compounds, as well as cyanides, and fluorides, pesticides, containers, "tar-like substances", scrap metal, and " ...

*Cadmium fluoride

... , like all cadmium compounds, is toxic and should be used with care. Fluoride is mildly toxic by comparison. ... National Pollutant Inventory - Cadmium and compounds fact sheet National Pollutant Inventory - Fluoride and compounds fact ... mole−1. Cadmium fluoride is prepared by the reaction of gaseous fluorine or hydrogen fluoride with cadmium metal or its salts, ... Cadmium fluoride (CdF2) is a mostly water-insoluble source of cadmium used in oxygen-sensitive applications, such as the ...

*Mercury telluride

Their enthalpy of formation, around −32kJ/mol, is less than a third of the value for the related compound cadmium telluride. ... Capper, P. (ed.) (1994) Properties of Narrow-Gap Cadmium-Based Compounds. INSPEC, IEE, London, UK. ISBN 0-85296-880-9 Boctor, N ... Cadmium telluride HgSe HgCdTe Brice, J. and Capper, P. (eds.) (1987) Properties of mercury cadmium telluride, EMIS datareview, ... Mercury telluride (HgTe) is a binary chemical compound of mercury and tellurium. It is a semi-metal related to the II-VI group ...

*Cadmium iodide

... , CdI2, is a chemical compound of cadmium and iodine. It is notable for its crystal structure, which is typical ... Also, the compound can be made by heating cadmium with iodine. In cadmium iodide the iodide anions form a hexagonal close ... Cadmium iodide's crystal structure is the prototype on which the crystal structures many other compounds can be considered to ... Cadmium iodide is prepared by the addition of cadmium metal, or its oxide, hydroxide or carbonate to hydroiodic acid. ...

*Cadmium resistance transporter

CadD members facilitate the export of cationic compounds such as cadmium ions. Currently, many sequenced proteins comprise the ... Cationic compound (in) + nH+ (out) → Cationic compound (out) + nH+ (in). Schirawski, Jan; Hagens, Werner; Fitzgerald, Gerald F ... "Chromosomal Locus for Cadmium Resistance in Pseudomonas putida Consisting of a Cadmium-Transporting ATPase and a MerR Family ... The cadmium resistance (CadD) protein family (TC# 2.A.77) belongs to the Lysine exporter (LysE) superfamily. ...

*Diarylide pigment

To some extent, these organic compounds have displaced cadmium sulfide from the market. They exist as yellow powders of low ... Diarylide pigments are organic compounds that are used as pigments in inks and related materials. They often are yellow or ...

*Tetrafluoroberyllate

Complex Compounds of Zinc and Cadmium Fluoberyllate with Organic Bases". Zeitschrift für anorganische und allgemeine Chemie. ... The thallium compound can cut growth on the 001 axis by 99%. The Tuttons salt (NH4)2Mn(BeF4)2.6(H2O) is made from a solution of ... Similar formula compounds have magnesium or zinc in a similar position. e.g. K2MgF4 or (NH4)2ZnF4 but these are not as stable. ... Therefore, many compounds that contain sulfate, have equivalents with tetrafluoroberyllate. Examples of these are the ...

*STS-73

... the Orbital Processing of High Quality Cadmium Zinc Telluride Compound Semiconductors experiment; the Study of Dopant ... the Vapor Transport Crystal Growth of Mercury Cadmium Tellurida in Microgravity experiment; the Zeolite Crystal Growth Furnace ...

*ERCC1

Cadmium (Cd) and its compounds are well-known human carcinogens. During Cd-induced malignant transformation, the promoter ... From results in gliomas and in cadmium carcinogenesis, methylation of the ERCC1 promoter may be a factor. One or more miRNAs ... aberrant methylation in DNA repair genes during malignant transformation of human bronchial epithelial cells induced by cadmium ...

*Sargassum muticum

Antioxidant compounds: Sargassum muticum is rich in antioxidant compounds such as phenolic compounds (cathechins, phlorotannins ... "Physicochemical studies of Cadmium (II) biosorption by the invasive alga in Europe Sargassum muticum" (PDF). Lodeiro, P.; ... Previous studies have shown the potential of hydrocarbon and fatty acid compounds in antifouling activities, compounds such as ... Previous studies have shown that Sargassum muticum is able to carry out the biosorption of heavy metals like cadmium, ...

*Cadmium chromate

... is the inorganic compound with the formula CdCrO4. It is relevant to chromate conversion coating, which is ... used to passivate common metal alloys such as aluminum, zinc, cadmium, copper, silver, magnesium, and tin. In conversion ...

*Sulfide

... is also used non-systematically, to describe compounds which release hydrogen sulfide upon acidification, or a compound ... "cadmium yellow". The black tarnish formed on sterling silver is Ag2S. Such species are sometimes referred to as salts. In fact ... Sulfide compounds can be prepared in several different ways: Direct combination of elements: Example: Fe(s) + S(s) → FeS(s) ... The preferred descriptor for such SH-containing compounds is thiol or mercaptan, i.e. methanethiol, or methyl mercaptan. ...
Methods are generally provided of sputtering a cadmium sulfide layer on a substrate. The cadmium sulfide layer can be sputtered on a substrate from a target in a sputtering atmosphere, wherein the target comprises about 75% to about 100% by weight cadmium, and wherein the sputtering atmosphere comprises a sulfur-containing source gas. The cadmium sulfide layer can be used in methods of forming cadmium telluride thin film photovoltaic devices.
The CdSe quantum dots (QDs) with bidentate ligands: a-diimine (NN) and dihydrolipoic acid (DHLA) were synthesized and characterized by UV-Vis, particle size and capillary electrophoretic techniques. Two systems were analyzed: CdSe with one ligand (CdSe/ligand) and CdSe with two different ligands (CdSe//ligand1/ligand2), where ligand = α-diimine or DHLA. Hydrodynamic features of functionalized QDs were characterized by zone capillary electrophoretic (CZE), and particle size techniques and these methods were consistent. It was established that CZE, micellar (MEKC) and microemulsion (MEEKC) modes were suitable for separating charged CdSe QDs and that no peaks were obtained for QDs passivated with electrically neutral ligands. For CdSe QDs with neutral (NN) ligands, a preconcentration method with the use of a micellar plug was introduced for visualizing these QDs. A sharp peak representing neutral QDs was obtained within the zone of micellar plug of a non-ionic surfactant, Here, a ligand character ...
Cadmium Sulphide (CdS) nanoparticles were prepared using microemulsion method using cadmium chloride as cadmium source and sodium sulphide as sulphur source. The obtained nanoparticles structures were characterized by X-ray diffraction (XRD) and Transmission Electron Microscopy (TEM) whereas optical characterization was done by Ultra Violet-Visible absorption. XRD result shows that CdS nanoparticles of hexagonal phase are formed. The TEM result indicates that the synthesized CdS nanoparticles are of variable morphology like spherical, cylindrical, nanorods and nanoneedles. Histograms help to evaluate size and aspect ratio of nanoparticles. UV-Visible spectroscopy reveals that as prepared CdS nanoparticles show a quantum confinement effect with shift in band gap. It is also found that water to surfactant molar ratio (wo) and co-surfactant are vital factors in the morphology and optical properties of CdS nanoparticles.
We have synthesized and characterized CdS nanoparticles incorporated into the voids of opal crystal. This is the first time of AFM observation of pure and CdS doped opal crystal. It is shown, the size of CdS nanoparticle, which getting from AFM observation of CdS doped opal, is varied 70-90 nm. It is the contradiction of the results of Raman spectra of the CdS-opal sample, from what the frequency vibrations of this sample are corresponded to the size of the Cds nanoparticles 10-30 nm. The additional experiment - the high resolution SEM observation had shown - the size of CdS nanoparticles is 10-30 nm. By analysis of this results, we consider during the AFM scanning the tip removes some part of the CdS (may be some boundary between CdS nanoparticles with 10-30 nm sizes). It is well-known sweeping process. It has proposed, during the AFM tip scanning of the CdS-opal surface, that the measurement of the bonding force from the force cuver, can give us the order of the bonding force of some units ...
Creative Diagnostics provides DiagNano™ CdSe Quantum Dots, 600 nm for immunoassay, bioseparation and medical imaging applications.
Organic-inorganic hybrid perovskites have recently attracted considerable interest for application in solar cells due to their low cost, high absorption coefficient and high power conversion efficiency (PCE). Herein, we utilize a CdSe quantum dot/PCBM composite as an electron transport layer (ETL) to investi
Page contains details about CdSe quantum dots . It has composition images, properties, Characterization methods, synthesis, applications and reference articles : nano.nature.com
Page contains details about ZnO-graphene core-shell quantum dots film on FTO glass . It has composition images, properties, Characterization methods, synthesis, applications and reference articles : nano.nature.com
In order to detect low level glucose concentration, an electrochemiluminescence (ECL) biosensor based on TGA-capped CdSe quantum dots (QDs) was fabricated by the immobilization of CdSe QDs after modifying the surface of a glassy carbon electrode (GCE) with 4-aminothiophenol diazonium salts by the electrochemical method. For the detection of glucose concentration,|i| glucose oxidase|/i| (GOD) was immobilized onto the fabricated CdSe QDs-modified electrode. The fabricated ECL biosensor based on TGA-capped CdSe QDs was characterized using a scanning electron microscope (SEM), UV-vis spectrophotometry, transmission electron microscopy (TEM), a fluorescence spectrometer (PL), and cyclic voltammetry (CV). The fabricated ECL biosensor based on TGA-capped CdSe QDs is suitable for the detection of glucose concentrations in real human blood samples.
Cadmium Sulfide is a medicine available in a number of countries worldwide. A list of US medications equivalent to Cadmium Sulfide is available on the Drugs.com website.
|p|We first focus on the kinetics of nanoparticle growth in a microemulsion synthesis of CdSe semiconductor nanocrystals. The process consists of a fast initial stage of typical time constant of the order of 103 s followed by a slow stage of time constant of the order of 104s. Growth proceeds similarly to that described for the hot-matrix synthesis of CdSe, underlining the generality of the two-stage growth mechanism, irrespective of the matrix type and synthesis conditions. However, the time constant of each stage in the microemulsion synthesis is much larger than in the hot-matrix one. Also, the ratio between the fast and slow time constant is appreciably bigger. We also prove that larger size reverse micelles, obtained by increasing the water:surfactant ratio, generally lead to larger CdSe nanoparticles. Bis(trimethylsilyl) selenium is the crucial precursor for the CdSe nanoparticle synthesis. An intermediate stage of the chemical reaction limiting the bis(trimethylsilyl)
The structure of the amino modified CdSe/ZnS core-shell QD (a) and the size distribution of the QDs (b) in the aqueous environment of living cells. The averaged
The unique characteristics of engineered nanomaterials have received enormous attention for their potential applications in biology and medicine. Quantum dots (QDs), in particular, with their bright, photostable and size tunable fluorescence have shown great promise as alternatives to organic dyes for biological imaging. A key issue in evaluating their utility is assessing their potential toxicity, which however is not fully understood. In order to address problems associated with QDs manufacturing and to assess their immunotoxicity, we evaluated recently synthesized CdSe/ZnS core/shell QDs with a tri-n-octylphosphine oxide, poly(maleic anhydride-alt-1-tetradecene) (TOPO-PMAT) coating. In this study, we investigated the potential pro-inflammatory response that these nanoparticles might elicit and the signaling pathways that regulate such events. We measured the gene expression of pro-inflammatory cytokines/chemokines in mouse macrophages. The mRNA transcription of a list of pro-inflammatory ...
Fluorescent labeling reagents are used as diagnosis and research reagents that label specific protein, antigen, antibody, and DNA. However, the chromophoric groups are not stable under long-time Ultra Violet (UV) excitation measurement condition. Nanometer-sized semiconductor particles (for example, CdS or CdSe nanometer-sized particles) provide high intensity fluorescence with durability under long-time UV irradiation. However, the CdSe particles are usually insoluble to water. We prepared terpolymers which consist of water-soluble and hydrophobic parts, and functional group for antibody binding site. Water-soluble part in the polymers is composed of N-isopropylacrylamide. Hydrophobic part for anchoring to CdSe nanoparticles coated with hydrophobic stabilizing reagents and oleic acid is prepared by copolymerization of oleic acid (Ole) as a monomer. The terpolymers were prepared by radical polymerization of Nipam, Ole, and acrylic acid and their structures were confirmed by IR and NMR spectroscopic
Cation exchange occurs via defect initiated solid-state diffusion, a process that can lead to defect formations. The effect of such inherent defect formation on carrier dynamics of cation-exchanged heterostructures remains poorly understood. Herein, we report exciton dynamics in type II CdSe/PbSe heterostructure nanorods formed via cation exchange. The majority of electrons in CdSe domains decays in 5 ps due to ultrafast carrier trapping. The defect generated by cation exchange can be healed by annealing the as-synthesized CdSe/PbSe heterostructure nanorods. This study suggests a strategy for improving properties of heteronanostructures prepared by cation exchange for applications in photovoltaics and photocatalysis ...
Our initial goal was to clone the nucleotide sequences of three small peptides, A7 (N-SLTPLTTSHLRS-C), Z8 (N-VISNHAESSRRL-C), and J140 ((N-TGCAACAACCCGATGCACCAGAACTGC-C) ,which have been previously reported in Mao, et. al. to nucleate zinc sulfide (A7 and Z8 peptides) and cadmium sulfide (J140 peptide) to form quantum dot containing nano-wires using phage display.. Since all of the QD nucleating peptides were small sequences of 70 base pairs or less, we opted to generate the inserts using an oligonucleotide annealing procedure (see protocols) using designed oligos ordered from IDT. These were to be then cloned into the BioBrick vector PSB13C. Also, the sequence of the small peptide CDS7 (N-GDVHHHGRHGAEHADI-C), which previously demonstrated by Mi, et. al. to nucleate the formation of cadmium sulfide containing QDs, was synthesized by Invitrogen in a pANY vector and then amplified from the construct using primers containing either Biobrick ends conforming to RFC23 Silver lab standard or BamHI and ...
Our initial goal was to clone the nucleotide sequences of three small peptides, A7 (N-SLTPLTTSHLRS-C), Z8 (N-VISNHAESSRRL-C), and J140 ((N-TGCAACAACCCGATGCACCAGAACTGC-C) ,which have been previously reported in Mao, et. al. to nucleate zinc sulfide (A7 and Z8 peptides) and cadmium sulfide (J140 peptide) to form quantum dot containing nano-wires using phage display.. Since all of the QD nucleating peptides were small sequences of 70 base pairs or less, we opted to generate the inserts using an oligonucleotide annealing procedure (see protocols) using designed oligos ordered from IDT. These were to be then cloned into the BioBrick vector PSB13C. Also, the sequence of the small peptide CDS7 (N-GDVHHHGRHGAEHADI-C), which previously demonstrated by Mi, et. al. to nucleate the formation of cadmium sulfide containing QDs, was synthesized by Invitrogen in a pANY vector and then amplified from the construct using primers containing either Biobrick ends conforming to RFC23 Silver lab standard or BamHI and ...
Use * or ? to search for alternate forms of a word. Use * to stand for several characters, and ? for a single character: e.g. optim* will find optimal, optimize or optimum; wom?n will find woman and women. ...
Zusammenfassung CdS-Nanoteilchen mit Größen zwischen 1.1 und 4.2 nm wurden in Äthanol und mit Thioglycerol (TG)-Hülle synthetisiert. Es wurde gezeigt, dass die nass-chemische Synthese ohne Wasser und die Verwendung von TG als Hülle folgende Vorteile bieten: Es konnten kleinere Teilchen hergestellt und eine schmalere Größenverteilung erzielt werden. Zusätzlich wird dem Altern der Teilchen vorgebeugt, und die Ergebnisse sind besser reproduzierbar. Hochaufgelöste Photoemissions-Messungen an kleinen CdS-Teilchen (1.1, 1.4, 1.7, 1.8; 1.8 nm mit Glutathion-Hülle) ergaben Beiträge von fünf verschiedenen Schwefelatom-Typen zum S 2p-Gesamt Signal. Außerdem wurde beobachtet, dass Nanoteilchen unterschiedlicher Größe und/oder mit unterschiedlichen Hüllen-Substanzen verschiedene Photoemissionsspektren zeigen und verschieden starke Strahlenschäden aufweisen. Bei den 1.4 nm großen CdS-Teilchen entsprechen die Komponenten des S 2p-Signals entweder Schwefelatomen mit unterschiedlichen Cd-Nachbarn,
Here you can find all of the regulations and regulatory lists in which this substance appears, according to the data available to ECHA. This substance has been found in the following regulatory activities (directly, or inheriting the regulatory context of a parent substance):. ...
Characterization of nanocrystals is crucial for the development of many chemical methods based on this technology. For this, there are several techniques, mainly microscopic, and recently capillary electrophoretic techniques, that have been proposed. In our laboratory, we examined several capillary electrophoretic methodologies: zone (CZE), micellar (MEKC), microemulsion (MEEKC), non-aqueous (NACE) and polymer based (CGE). For the separation of water soluble CdSe nanocrystals, CZE, MEKC and CGE were found to be suitable
Artists rendering of bioreactor (left) loaded with bacteria decorated with cadmium sulfide, light-absorbing nanocrystals (middle) to convert light, water and carbon dioxide into useful chemicals (right).
Dr. Belchers team uses the virus as a temporary scaffolding on which the crystals grow. The viruses are first altered by the insertion of a few amino acid chains, called peptides, so that they attract a particular material like zinc sulfide or cadmium sulfide. It is all a matter of affinity, molecular recognition and genetic programming, Dr. Belcher said. "We programmed the virus to grow a particular material at a particular length," she said. "Then we burned off the virus and were left with single-crystal semiconductor wires ...
Cadmium sulfide (CdS) is one of the most important chalcogenides applied to water splitting, which has a band gap of 2.4 eV that suits very well with the solar spectrum. Moreover, CdS possesses a strong reduction activity ...
Combined Defence Services Examination(CDSE) is conducted by Union public Service commission (UPSC) . UPSC conducts two exam yearly. The CDS I exam will be held in the month of February and the CDS II will be held in AUG. CDSE exam consist of three parts namely General knowledge, English and Elementary mathematics. The questions are all objective type question and each paper will be give 2 hour for the exam. There is negative marking in this exam. Through this exam on can join the three armed forces (Army, Navy and Air-force). Two entry is possible with CDSE - IMA and OTA. For IMA one has write all the 3 papers , whereas for OTA only GK and English paper is enough ...
Lasing in submonolayer CdSe structures in a ZnSe matrix without external optical confinement. Krestnikov, I. L.; Ledentsov, N. N.; Maksimov, M. V.; Sakharov, A. V.; Ivanov, S. V.; Sorokin, S. V.; Tenishev, L. N.; Kop�ev, P. S.; Alferov, Zh. I. // Technical Physics Letters;Jan97, Vol. 23 Issue 1, p23 It is shown that in order to achieve lasing in structures with CdSe submonolayers inserted in a ZnSe matrix, no additional optical confinement of the active region using thick wide-gap layers is required. The high oscillator strength of the excitons trapped at CdSe islands modulates the... ...
... (Fluorescent Nanocrystals). 5mg 665nm emitting fluorescent nanocrystals with amine (NH2) functional surface.
... (Fluorescent Nanocrystals). 25mg 490nm emitting fluorescent nanocrystals with amine (NH2) functional surface.
My goal in writing this blog is to leave to my grandsons the answers to the questions I wish I had asked my granddad... I am a cowboy activist, a Western movie historian, and a folk artist. My cowboy and voyageur legacy can be back-trailed for more than twelve generations in North America ...
218. 113Cd Shielding Tensors of Momomeric Cadmium Compounds Containing Nitrogen Donor Atoms. 2. Synthesis, Crystal Structures, and 113Cd NMR Spectroscopy of the Six-Coordinate Complexes [HB(pz)3]2Cd, [HB(3-(Phpz)3]2Cd, and [B(pz)4]Cd[HB(3-Phpz)3] (pz = pyrazolyl), D. L. Reger, S. M. Meyers, S. S. Mason, D. J. Darensbourg, M. W. Holtcamp, K. K. Klausmeyer, J. H. Reibenspies, A. S. Lipton, and P.D. Ellis, J. Am. Chem. Soc., 1995, 117, 10998-11005 ...
Per 90 giorni dopo lacquisto, benefici di unassistenza tecnica e funzionale, oltre che dellaccesso agli aggiornamenti disponibili per questo prodotto.. Garantisci il buon funzionamento di questo prodotto sul tuo negozio per 12 mesi con lOpzione Zen! Grazie allOpzione Zen, hai accesso a TUTTI gli aggiornamenti del prodotto per un anno dopo lacquisto. Lo sviluppatore del prodotto ti accompagna rispondendo per e-mail a tutte le tue domande tecniche e funzionali.. Che cosè lOpzione Zen?. Lopzione Zen comprende due servizi:. ...
Dopo un giorno di riposo, ripartiamo con destinazione San Benedetto del Tronto, tappa non lunghissima, 112 km, ma che si è fatta sentire causa meteo. Dopo un riposo pomeridiano e un bagno al mare di cui ora, costeggiando ladriatico, riusciamo ad usufruirne tutti i giorni, pensiamo alla cena. Ci informiamo, optiamo per dello street food. […]. ...
Any one cd $10 USA and $14 World Any two Cds $18 USA and $25 World Any 3 Cds $24 USA and $36 World Any 4 CDs $30 USA and $46 World More Than 4 cds 7.00 Each or
Dopo la CGIL Monza anche la Camera del lavoro di Lodi si affida ad ARES2.0 per la campagna sul tesseramento nel settore dell artigianato.
SALTWATERThings are really looking up for the saltwater anglers. Cobia are still hanging around, with some being found at Bluefish Rock and others being found along the buoy lines. Croaker are being
Looking for cadmium telluride detector? Find out information about cadmium telluride detector. A photoconductive cell capable of operating continuously at ambient temperatures up to 750°F ; used in solar cells and infrared, nuclear-radiation, and... Explanation of cadmium telluride detector
Doping quantum dots to increase conductivity is a crucial step towards being able to fabricate a new generation of electronic devices built on the "bottom-up" platform that are smaller and more efficient than currently available. Indium, tin, and gallium have been used to dope CdSe in both the bulk and thin film regimes and introduce n-type electron donation to the conduction band. CdSe quantum dots have been successfully doped with indium, tin, and gallium using the Li4[Cd10Se4(SPh16)] single source precursor combined with metal chloride compounds. Doping CdSe quantum dots is shown to effect particle growth dynamics in the "heterogeneous growth regime." Doping with indium, tin, and gallium introduce donor levels 280, 100, and 50 meV below the conduction band minimum, respectively. Thin films of indium and tin doped quantum dots show improved conductivity over films of undoped quantum dots. Transient Absorption spectroscopy indicates that indium doping introduces a new electron energy level in ...
In the last two decades, semiconductor quantum dots small colloidal nanoparticles have garnered a great deal of scientific interest because of their unique properties. Among nanomaterials, CdTe holds special technological importance as the only known II-VI material that can form conventional p-n junctions. This makes CdTe very important for the development of novel optoelectronic devices such as light-emitting diodes, solar cells, and lasers. Moreover, the demand for water-compatible light emitters and the most common biological buffers give CdTe quantum dots fields a veritable edge in biolabeling and bioimaging.
In this work, a novel three-dimensional cadmium telluride quantum dots-DNA nanoreticulation (3D CdTe QDs-DNA-NR) was used as a signal probe with the dual-legged DNA walker circular amplification as target conversion strategy to establish a pioneering electrochemiluminescence (ECL) biosensing strategy for ultrasensitive detection of microRNA-21 form cancer cells. Herein, such a
In optoelectronic devices based on quantum dot arrays, thin nanolayers of gold are preferred as stable metal contacts and for connecting recombination centers. The optimal morphology requirements are uniform arrays with precisely controlled positions and sizes over a large area with long range ordering since this strongly affects device performance. To understand the development of gold layer nanomorphology, the detailed mechanism of structure formation are probed with time-resolved grazing incidence small-angle X-ray scattering (GISAXS) during gold sputter deposition. Gold is sputtered on a CdSe quantum dot array with a characteristic quantum dot spacing of approximate to 7 nm. In the initial stages of gold nanostructure growth, a preferential deposition of gold on top of quantum dots occurs. Thus, the quantum dots act as nucleation sites for gold growth. In later stages, the gold nanoparticles surrounding the quantum dots undergo a coarsening to form a complete layer comprised of gold-dot ...
Article Photoinduced toxicity of CdSe/ZnS quantum dots with different surface coatings to Escherichia coli. Quantum dot (QD) nanoparticles are increasingly used for various biomedical applications. To increase their biocompatibility, QDs are frequent...
... 1.45 eV. Calculate the value of the absorption edge of this material. Express your answer in meters. (b) Shown below are several % absorption vs. wavelength diagrams ...
Photoluminescence (PL) and Raman scattering spectra of none- and bio-conjugated CdSe/ZnS and CdSeTe/ZnS quantum dots (QDs) have been studied.
The present study reports the localization and interaction of thioglycolic acid (TGA) capped CdTe quantum dots ([email protected] QDs) within the extracellular matrix (ECM) of Haematococcus pluvialis (Chlorophyceae) microalgae (HPM) after an incubation period of 5 min. Changes in the Raman spectrum of HPM induced by the adsorption of the [email protected] QDs are successfully found by using naked gold anisotropic structures as nano-sensors for surface-enhanced Raman scattering (SERS effect). Raman spectroscopy results show that [email protected] QDs interact with the biomolecules present in the ECM. Sample preparation and characterization by complementary techniques such as confocal and electron microscopy are also used to confirm the presence and localization of the nanoparticles in the algae. This research shows new evidence on early accumulation of QDs in plant cells and would further improve our understanding about their environmental impact.. © 2016 The Author(s). PDF Article ...
The objective of my research work is to synthesize, characterize, design, and apply nanocrystals for biomedical use.; Gold nanoparticles were synthesized in the presence of chitosan via reduction of HAuCl4 with sodium borohydride. The average particle size of gold nanoparticles was significantly affected with the concentration of chitosan added and was ranged between 5 and 30 nm. The gold-chitosan nanocomposites were formed by adsorbing chitosan molecules on the gold nanoparticles.; CdSe/ZnS quantum dots were prepared by a solution phase synthetic method. A new route for the phase transfer of CdSe/ZnS quantum dots from non-polar solvents into aqueous solution was developed using hydrophobically modified polysaccharides, both chitosan and alginate. In addition, it was shown that CdSe/ZnS based polysaccharide nanoparticles effectively inhibited the proliferation of human ovarian cancer cell line SKOV-3 in vitro. The findings suggest that CdSe/ZnS quantum dot based polysaccharide nanoparticles not ...
Los Angeles, CA (PRWEB) May 28, 2008 -- Los Angeles-based American Elements announced the further expansion of its cadmium telluride production facilities to
Cadmium Telluride Quantum Dots CdTe bulk & research qty manufacturer. Properties, SDS, Applications, Price. Free samples program. Term contracts & credit cards/PayPal accepted.
Optical techniques targeting biomarkers of cancer have the potential to aid in the early detection of this disease. Molecular and biochemical changes in neoplastic tissue could be interrogated, potentially providing an objective assessment and identification of suspect tissue. A method of interrogating such changes involves the development of optical based probes that provide a molecular-specific source of signal. This dissertation aims to develop an effective optical strategy to target the epidermal growth factor for in vivo detection. The optical probe design consists of an optically active component (quantum dot, fluorescent dye) and a molecular specific probe (antibody, peptide). The optically active components investigated were cadmium telluride quantum dots (QDs) and Alexa Fluor 647 dye. Epidermal growth factor receptor (EGFR) was chosen as a molecular target because it is over-expressed in a large number of epithelial cancers. Both peptides and antibody to EGFr were investigated as ...
As a multipotent tool for scientific exploration, semiconductor nanoparticles, or quantum dots (QDs), have gained enormous interest in nanoscience in the past two decades. The research presented here focused on cadmium telluride (CdTe) QDs: novel synthetic methodologies were used to prepare previously inaccessible nanomaterials based on CdTe QDs. -- CdTe/CdSe/ZnSe core/shell/shell QDs were prepared by a one-pot synthesis. The resulting QDs exhibited near infrared emission, were readily dispersed in aqueous media and applied to deep tissue imaging where emission through the skin indicated the gradual transition of the QDs via the lymphatic tract. -- Using a different synthetic approach, CdTe QDs, which were dispersed in organic media, were exposed to mercury cations in a toluene/methanol solution, resulting in CdHgTe nanoalloy formation. The optical characteristics of the resulting materials were substantially red-shifted from those of the original CdTe QDs. Structural changes were also examined ...
Over the last decade, cadmium telluride (CdTe) and cadmium zinc telluride (CdZnTe) wide band gap semiconductors have attracted increasing interest as X-ray and gamma ray detectors. Among the traditional high performance spectrometers based on silicon (Si) and germanium (Ge), CdTe and CdZnTe detectors show high detection efficiency and good room temperature performance and are well suited for the development of compact and reliable detection systems. In this paper, we review the current status of research in the development of CdTe and CdZnTe detectors by a comprehensive survey on the material properties, the device characteristics, the different techniques for improving the overall detector performance and some major applications. Astrophysical and medical applications are discussed, pointing out the ongoing Italian research activities on the development of these detectors.
A semiconductor nanocrystal compound and probe are described. The compound is capable of linking to one or more affinity molecules. The compound comprises (1) one or more semiconductor nanocrystals capable of, in response to exposure to a first energy, providing a second energy, and (2) one or more linking agents, having a first portion linked to the one or more semiconductor nanocrystals and a second portion capable of linking to one or more affinity molecules. One or more semiconductor nanocrystal compounds are linked to one or more affinity molecules to form a semiconductor nanocrystal probe capable of bonding with one or more detectable substances in a material being analyzed, and capable of, in response to exposure to a first energy, providing a second energy. Also described are processes for respectively: making the semiconductor nanocrystal compound; making the semiconductor nanocrystal probe; and treating materials with the probe.
A semiconductor nanocrystal compound and probe are described. The compound is capable of linking to one or more affinity molecules. The compound comprises (1) one or more semiconductor nanocrystals capable of, in response to exposure to a first energy, providing a second energy, and (2) one or more linking agents, having a first portion linked to the one or more semiconductor nanocrystals and a second portion capable of linking to one or more affinity molecules. One or more semiconductor nanocrystal compounds are linked to one or more affinity molecules to form a semiconductor nanocrystal probe capable of bonding with one or more detectable substances in a material being analyzed, and capable of, in response to exposure to a first energy, providing a second energy. Also described are processes for respectively: making the semiconductor nanocrystal compound; making the semiconductor nanocrystal probe; and treating materials with the probe.
ZnS and CdS nanoparticles were prepared by a simple microwave irradiation method under mild conditions. The obtained nanoparticles were characterized by XRD, TEM and EDX. The results indicated that high purity of nanosized ZnS and CdS was successfully obtained with cubic and hexagonal crystalline structures, respectively. The band gap energies of ZnS and CdS nanoparticles were estimated using UV-visible absorption spectra to be about 4.22 and 2.64 eV, respectively. Photocatalytic degradation of methylene blue was carried out using physical mixtures of ZnS and CdS nanoparticles under a 500-W halogen lamp of visible light irradiation. The residual concentration of methylene blue solution was monitored using UV-visible absorption spectrometry. From the study of the variation in composition of ZnS:CdS, a composition of 1:4 (by weight) was found to be very efficient for degradation of methylene blue. In this case the degradation efficiency of the photocatalyst nanoparticles after 6 h irradiation time was
The oxidative coupling of sp3 hybridized carbon atoms by photocatalysis is a valuable synthetic method as stoichiometric oxidation reagents can be avoided and dihydrogen is the only byproduct of the reaction. Cadmium sulfide, a readily available semiconductor, was used as a visible light heterogeneous photocatalyst for the oxidative coupling of benzyl alcohols and benzyl amines by irradiation with blue light. Depending on the structure of the starting material, good to excellent yields of homocoupling products were obtained as mixtures of diastereomers. Cross-coupling between benzyl alcohols and benzyl amines gave product mixtures, but was selective for the coupling of tetrahydroisoquinolines to nitromethane. The results demonstrate that CdS is a suitable visible light photocatalyst for oxidative bond formation under anaerobic conditions. ...
TY - JOUR. T1 - Methotrexate-conjugated AgInS2/ZnS quantum dots for optical imaging and drug delivery. AU - Wu, Pei Jung. AU - Ou, Keng Liang. AU - Chen, Jem Kun. AU - Fang, Hsiao Ping. AU - Tzing, Shin Hwa. AU - Lin, Wei Xiang. AU - Chang, Jia Yaw. PY - 2014/8/1. Y1 - 2014/8/1. N2 - The ability to conjugate drugs with quantum dots (QDs) offers excellent prospects in pharmacotherapy for the improvement of diagnosis and treatment of human diseases. Here, we report a facile strategy to prepare dual-functional nanomaterials consisting of QDs and an anticancer drug. Hydrophilic AgInS 2/ZnS QDs were obtained through an ultrasonication process by introducing the amphiphilic polymer, poly(maleic anhydride-alt-1-octadecene) (PMAO). Subsequently, the anticancer drug methotrexate (MTX) was covalently coupled to the surface of the AgInS2/ZnS QDs by carbodiimide chemistry. The MTT [3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide] cell proliferation assay indicated that these hydrophilic ...
Cadmium selenide is a semi-conductor with interesting optical and photoconductive pro-perties in the red part of the spectrum. This paper is concerned mainly with the measure-ment of a number of the optical properties of cadmium selenide in which pure single crystals grown by sublimation in atmospheres of inert gas were used. Thin plates of CdSe less than 1 μ thick were obtained, and these are transparent right down to short wavelengths in the region of 4500Å. At liquid-helium temperatures, sharp absorption bands may be observed in the visible part of the spectrum, both in the red part near the absorption edge, and in the green part. From the position of these bands and the shape of the absorption curves, in- formation has been obtained concerning the band structure. Two levels occur near the top of the valence band with a small energy separation (ca. 0.026eV) and these are connected with crystal field splitting. The energy separation of the deeper levels is ca. 0.41 eV and these levels are ...
Tan HW, Xu YM, Wu DD, Lau AT. Recent insights into human bronchial proteomics - how are we progressing and what is next? Expert review of proteomics . 2017. doi: 10.1080/14789450.2017.1417847. PubMed PMID: 29260600.. • Huang SJ, Xu YM, Lau AT. Electronic cigarette: A recent update of its toxic effects on humans. J Cell Physiol. 2017. doi: 10.1002/jcp.26352. PubMed PMID: 29215738.. • Zheng W, Xu YM, Wu DD, Yao Y, Liang ZL, Tan HW, Lau AT. Acute and chronic cadmium telluride quantum dots-exposed human bronchial epithelial cells: The effects of particle sizes on their cytotoxicity and carcinogenicity. Biochem Biophys Res Commun. 2017; 495(1):899-903. doi: 10.1016/j.bbrc.2017.11.074. PubMed PMID: 29137979.. • Xu YM, Yu FY, Lau AT. Discovering Epimodifications of the Genome, Transcriptome, Proteome, and Metabolome: the Quest for Conquering the Uncharted Epi(c) Territories. Current Pharmacology Reports. 2017;3(5):286-93. doi: 10.1007/s40495-017-0103-4.. • Cai NL, Lau AT, Yu FY, Wu DD, Dai LJ, ...
We summarize synchrotron radiation photoemission studies of Ag, Ge and Sm overlayers on Hg1-xCdxTe (110) surfaces. These metals exhibit widely different interface reactivity with Hg1-xCdxTe and yield a range of different interface morphologies. To assess the relative importance of the microscopic driving forces that determine the local composition at the interface and in the semiconductor near surface region we present a systematic comparison of our data with calculated thermodynamic parameters such as the cation-metal heat of solution, the heat of alloying from Miedemas semiempirical model, and the metaltelluride formation enthalpy. (Mercury compounds, Cadmium Tellurides)*CADMIUM TELLURIDES
article{b60df51d-355a-4069-9ae4-51c7aaa1b590, abstract = {We recently refined the in vitro motility assay for studies of actomyosin function to achieve rectified myosin induced sliding of actin filaments. This paves the way, both for detailed functional studies of actomyosin and for nanotechnological applications. In the latter applications it would be desirable to use actin filaments for transportation of cargoes (e.g., enzymes) between different predetermined locations on a chip. We here describe how single quantum dot labelling of isolated actin filaments simultaneously provides handles for cargo attachment and bright and photostable fluorescence labels facilitating cargo detection and filament tracking. Labelling was achieved with preserved actomyosin function using streptavidin-coated CdSe quantum dots (Qdots). These nanocrystals have several unique physical properties and the present work describes their first use for functional studies of isolated proteins outside the cell. The results, ...
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We report our theoretical investigation onto the shape dependence of two-photon absorption (TPA) in semiconductor nanocrystals (NCs). Based on a four-band model under effective mass approximation, we have developed a simple analytical theory capable of providing a quantitative explanation of the recent TPA measurement on CdS nanorods [Appl. Phys. Lett. 94, 103117 (2009)]. With this theory, we have systematically revealed the characteristics of TPA in CdSe and ZnO NCs with four different shapes: sphere, cube, cylinder and cuboid. Due to the splitting of degenerate energy levels caused by the decreased degree of symmetry, nanocuboids and nanocubes exhibit greater TPA cross-sections than nanocylinders and nanospheres of similar sizes, respectively. Similarly, nanocuboids and nanocylinders possess larger TPA cross-sections than nanocubes and nanospheres of similar lateral dimension, respectively. Given TPA-allowed transitions, nanocuboids show stronger size dependence than nanocylinders. The size ...
Creative Diagnostics provides DiagNano™ ZnSe/ZnS Quantum Dots, 405 nm for immunoassay, bioseparation and medical imaging applications.
A water-stable semiconductor nanocrystal complex that is stable and has high luminescent quantum yield. The water-stable semiconductor nanocrystal complex has a semiconductor nanocrystal core of a III-V semiconductor nanocrystal material and a water-stabilizing layer. A method of making a water-stable semiconductor nanocrystal complex is also provided.
A quantum dot is a tiny piece of semiconductor material 2 to 10 nanometers in diameter (a nanometer is 1 billionth of a meter). When illuminated with invisible ultraviolet light, a quantum dot will fluoresce with visible light. To enhance the fluorescence, Cunningham and colleagues at the U. of I. begin by creating plastic sheets of photonic crystal using a technique called replica molding. Then they fasten commercially available quantum dots to the surface of the plastic. Quantum dots normally give off light in all directions. However, because the researchers quantum dots are sitting on a photonic crystal, the energy can be channeled in a preferred direction - toward a detector, for example. While the researchers report an enhancement of fluorescence intensity by a factor of up to 108 compared with quantum dots on an unpatterned surface, more recent (unpublished) work has exceeded a factor of 550. "The enhanced brightness makes it feasible to use photonic crystals and quantum dots in ...
The present invention generally relates to energy storage devices, and to metal sulfide energy storage devices in particular. Some aspects of the invention relate to energy storage devices comprising at least one flowable electrode, wherein the flowable electrode comprises an electroactive metal sulfide material suspended and/or dissolved in a carrier fluid. In some embodiments, the flowable electrode further comprises a plurality of electronically conductive particles suspended and/or dissolved in the carrier fluid, wherein the electronically conductive particles form a percolating conductive network. An energy storage device comprising a flowable electrode comprising a metal sulfide electroactive material and a percolating conductive network may advantageously exhibit, upon reversible cycling, higher energy densities and specific capacities than conventional energy storage devices.
0027]Typically, colloidal II-IV nanoparticles reported in the literature have sizes in the range of 2-6 nm which is the size range where quantum confinement effect becomes important and room-temperature emissions can be observed. As a result, reports on making II-IV nanocrystals having sizes larger than 10 nm are scarce. In the work of Murray et al., CdSe nanocrystals as large as 11.5 nm have been prepared by injecting a mixture of dimethylcadmium and TOPSe into a hot solution of TOPO and TOP(C. B. Murray, et al., JACS, 115, 8706 [1993]). However, the long hours it takes to reach the size of 11.5 nm, together with the usage of the extremely toxic cadmium precursor CdMe2, makes this preparation method impractical from a manufacture point of view. In addition, large-sized CdSe nanocrystals synthesized by this method using multiple injections are generally limited to around 11 nm and often with a significant aspect ratio. More recently, Pengs group investigated different kinds of safe, common, and ...
Bacteria covered in semiconductor nanoparticles make more efficient use of light and could be used to create a key ingredient in fuel and plastics.
In the past few years, a large body of work has been dedicated to CdTe thin film semiconductors, as the electronic and optical properties of CdTe nanostructures make them desirable for photovoltaic applications. The performance of semiconductor devices is greatly influenced by the deep levels. Knowledge of parameters of deep levels present in as-grown materials and the identification of their origin is the key factor in the development of photovoltaic device performance. Photo Induced Current Transient Spectroscopy technique (PICTS) has proven to be a very powerful method for the study of deep levels enabling us to identify the type of traps, their activation energy and apparent capture cross section. In the present work, we report the effect of growth parameters and LASER irradiation intensity on the photo-electric and transport properties of CdTe thin films prepared by Close-Space Sublimation method using SiC electrical heating element. CdTe thin films were grown at three different source ...
This contribution examines the application of near infra-red (NIR) quantum dot (QD) containing films for cholesterol detection. Water-soluble, 2-(dimethylamino)ethanthiol (DAET) protected 800 nm CdSeTe/ZnS core-shell QDs were prepared and incorporated into a chitosan film. The NIR electrogenerated chemiluminescence (ECL) of the QD/chitosan films upon reaction with H2O2 co-reactant (produced as a by-product of cholesterol oxidase-catalysed oxidation of cholesterol) gave a strong ECL signal at -1.35 V vs. Ag/AgCl. The sensor displayed a linear response over the clinically relevant range (0.25 ≤ [cholesterol] ≤ 5 mM) allowing the rapid detection of cholesterol and providing a platform for future development. Significantly, this NIR emission has been shown to exhibit excellent penetrability through biological samples, and will likely be at the forefront of development in the biosensing and imaging fields for the foreseeable future.. ...
Greentech Media has learned from reliable sources within the company that Abound Solar will be shutting its doors as soon as Thursday, after failing to find a buyer. Our source indicates that there will be an all-hands meeting at 11 a.m. on Thursday to break the news. Trent Waterhouse, listed as a Proven Marketing Turnaround Expert on LinkedIn, is assisting Abound Solar with their communications activities. Waterhouse said that Abound is not closing tomorrow, adding, Abound staff is not being laid off immediately. The VC-funded DOE loan-recipient was working with the cadmium telluride (CdTe) thin-film materials system and had hoped to achieve the success of its CdTe competitor First Solar. The firm was the beneficiary of a $400 million DOE loan guarantee, only $70 million of which has been drawn down. So, despite the imminent comparisons to Solyndra, this is bad n... Full article: http://www.greentechmedia.com/articles/read/Breaking-News... ...
Observation of energy transfer (ET) from multiexcitonic (MX) complexes in nanocrystal quantum dots (NQDs) has been severely restricted due to efficient nonradiative Auger recombination leading to very low MX emission quantum yields. Here we employed
Resistive opto-isolator (RO), also called photoresistive opto-isolator, vactrol (after a genericized trademark introduced by Vactec, Inc. in the 1960s), analog opto-isolator or lamp-coupled photocell, is an optoelectronic device consisting of a source and detector of light, which are optically coupled and electrically isolated from each other. The light source is usually a light-emitting diode (LED), a miniature incandescent lamp, or sometimes a neon lamp, whereas the detector is a semiconductor-based photoresistor made of cadmium selenide (CdSe) or cadmium sulfide (CdS). The source and detector are coupled through a transparent glue or through the air. Electrically, RO is a resistance controlled by the current flowing through the light source. In the dark state, the resistance typically exceeds a few MOhm; when illuminated, it decreases as the inverse of the light intensity. In contrast to the photodiode and phototransistor, the photoresistor can operate in both the AC and DC circuits and have ...
Recent advances in cadmium telluride (CdTe) energy-discriminating pixelated detectors have enabled the possibility of Multi-Spectral X-ray Computed Tomography (MSXCT) to incorporate spectroscopic information into CT. MultiX ME 100 V2 is a CdTe-based spectroscopic x-ray detector array capable of recording energies from 20 to 160 keV in 1.1 keV energy bin increments. Hardware and software have been designed to perform radiographic and computed tomography tasks with this spectroscopic detector. Energy calibration is examined using the end-point energy of a bremsstrahlung spectrum and radioisotope spectral lines. When measuring the spectrum from Am-241 across 500 detector elements, the standard deviation of the peak-location and FWHM measurements are ± 0.4 and ± 0.6 keV, respectively. As these values are within the energy bin size (1.1 keV), detector elements are consistent with each other. The count rate is characterized, using a nonparalyzable model with a dead time of 64 ± 5 ns. This is ...
Plasma immersion ion implantation (PIII) is an important technique for performing a shallow junction for microelectronic applications. This work describes the effect of nitrogen PIII on structural, morphological and optical properties of CdTe thin films. To optimize the implantation results, the experiments were carried out at different exposure times (0, 2.5, 5, 10, 15 min). Scanning electron microscopy (SEM) and energy dispersed x-ray (EDX) were used to investigate the surface morphology of CdTe implanted films. According to x-ray diffraction (XRD) analysis, a considerable change in structural parameters such as lattice parameter, internal stress, crystallite size and lattice strain are observed as a result of increasing the duration time of plasma immersion nitrogen ions implanted CdTe film. The energy gap ( ) values of implanted films were estimated in terms of the first derivative of absorbance with respect to wavelength and found to be decreased with increasing PIII exposure time. The ...
1) M. P. Lisitsa et al.. Dispersion of the refractive indices and birefringence of CdSxSe1-x single crystals, Phys. Status Solidi, 31, 389-399 (1969) ...
Emma Stone made sure she stood out from the crowd when she attended the Telluride Film Festival in Colorado on Saturday, positioning herself front and center on the ground in front of a group.
Materion Advanced Chemicals Bismuth telluride; Purity: 99(vac. dep. grade), CAS 1304-82-1, Materion Item Number B-1116. Call 419-289-9800 to order.
Joel and Ethan Coen have a ton of Oscars and other awards on their shelves, but the duo is fairly elusive when it comes to touting themselves and their work. So it isnt exactly surprising that theyd never agreed to a Telluride Film Festival tribute, until this year.
... :A reliable and effective method for the industrial scale production of two-dimensional materials such as bismu..
Book now at New Sheridan Chop House in Telluride, explore menu, see photos and read 615 reviews: Best friend and his fiancé were visiting!! Johnny rocked!
A luxurious 6-bedroom home in historic Tellurides Depot district. Riverside location just 1.5 short blocks from the Gondola. Bedding: King, King, Queen, Queen, Queen, Captains Bunk (double/twin). Enter ...
The Plein Air festival comes to Telluride bringing beautiful pieces of art and accomplished artists to the valley. Shot by Justin Weihs. Edited by Jake James.
Hiros research project is aimed at further extending the capability of the CCI to measure the roughness of buried interfaces in tow and three dimensions. This will involve the development of mathematical models and algorithms that account for filtering and error correction. Model test structures with well characterised metal-oxide systems will be constructed at CREST using existing magnetron sputtering tools.. The new buried interface metrology capability will then be used to measure the roughness between important systems such as transparent conducting oxide/cadmium sulphide and the cadmium sulphide/cadmium telluride interface. This improved understanding of these important interfaces will lead to ways to improve the device efficiency. ...
Quantum dots are used as fluorescent taggants in security inks, papers, plastics, explosives, or any other item or substance in which it is desired to provide a distinct signature or marking. Quantum dots of specific sizes, compositions and structures may be used to produce specific fluorescence, mixtures of quantum dots can be used to produce random patterns of spectrally varying fluorescence, and particular quantum dot structures can be used to provide desirable physical and optical properties. The quantum dots may be read with an optical reader, which may be combined with readers using other technologies.
Transition metal(TM)-doped dilute magnetic semiconductor nanocrystals are of interest for potential applications in spintronics due to their tunable properties. The physical properties of semiconductor nanocrystals depend on their size or shape. we present first-principles calculations for the electronic structure and magnetic properties of completely passivated, H- adsorbed and isolated Mn/Cr-doped GaN nanocrystals with different point symmetry. A novel half-metallicity and magnetic metastability has been found. The multiple metastable spin states and spin-flip for metallic channel are demonstrated in these nanocrytals with the various H coverages and point groups symmetry. A detailed electronic structure analysis is given. Our calculated results imply a new type of half-metallic and spin-crossover nanomaterial ...
We have investigated the different mechanisms of photoluminescence (PL) of silicon nanocrystals due to the quantum confinement effect (QCE) and interface states. Si nanocrystals were formed by pulsed-laser deposition in inert argon and reactive oxygen gas. The collisions between the ejected species greatly influence the morphology of the Si nanocrystals and cause a transition from a film structure to a porous cauliflower-like structure, as the ambient gas pressure increases from 1 mTorr to 1 Torr. The oxygen content of the Si nanocrystals increases with increasing O2 ambient pressure, and nearly SiO2 stoichiometry is obtained when the O2 pressure is higher than 100 mTorr. Broad PL spectra are observed from Si nanocrystals. The peak position and intensity of the PL band at 1.8-2.1 eV vary with ambient gas pressure, while intensity changes and blueshifts are observed after oxidation and annealing. The PL band at 2.55 eV shows vibronic structures with periodic spacing of 9769 meV, while no peak shift is
With cadmium zinc tellurides (CZT) success as a gamma and x-ray detector material, there is need for high-quality, monocrystalline CZT in large volumes. Bridgman and gradient freeze growth methods have consistently produced material containing significant amounts of micron-sized, tellurium-rich inclusions, which are detrimental to device performance. These inclusions are believed to arise from a morphological instability of the growth interface driven by constitutional undercooling. Repeatedly rotating the crucible back and forth via the accelerated crucible rotation technique (ACRT) has been shown to reduce the size and number of inclusions. Via numerical techniques, we analyze the impact of two different applied temperature gradients, 10 K/cm and 30 K/cm, on the flow, temperature, tellurium distribution, and undercooling during growth with and without applied ACRT. Under growth without rotation, a higher axial thermal gradient results in stronger thermal-buoyancy driven flows, faster ...
...Single atom quantum dots created by researchers at Canadas National I...Quantum dots have extraordinary electronic properties like the abilit...Often referred to as artificial atoms quantum dots have previously ra...Research project leader Robert A. Wolkow described the potential impac...,Smallest,ever,quantum,dots,bring,real,world,applications,closer,biological,advanced biology technology,biology laboratory technology,biology device technology,latest biology technology
Colloidal quantum dots (CQDs) are free-standing nano-structures with chemically tunable electronic properties. This tunability offers intriguing possibilities for nano-electromechanical devices. In this work, we consider a nano-electromechanical nonvolatile memory (NVM) device incorporating a triple quantum dot (TQD) cluster. The device operation is based on a bias induced motion of a floating quantum dot (FQD) located between two bound quantum dots (BQDs). The mechanical motion is used for switching between two stable states, "ON" and "OFF" states, where ligand-mediated effective interdot forces between the BQDs and the FQD serve to hold the FQD in each stable position under zero bias. Considering realistic microscopic parameters, our quantum-classical theoretical treatment of the TQD reveals the characteristics of the NVM. ...
A semiconductor device has a PCB with a cavity formed in a first surface of the PCB. A stress compensating structure, such as an encapsulant or dummy die, is disposed in the cavity. An insulating layer is formed over the PCB and stress compensating structure. A portion of the insulating layer is removed to expose the stress compensating structure. A conductive layer is formed over the stress compensating structure. A solder masking layer is formed over the conductive layer with openings to the conductive layer. A semiconductor package is mounted over the cavity. The semiconductor package is a large array WLCSP. Bumps electrically connect the semiconductor package and conductive layer. The semiconductor package is electrically connected to the conductive layer. The CTE of the stress compensating structure is selected substantially similar to or matching the CTE of the semiconductor package to reduce stress between the semiconductor package and PCB.
In a semiconductor device, a plurality of conductive pillars is formed over a temporary carrier. A dual-active sided semiconductor die is mounted over the carrier between the conductive pillars. The semiconductor die has first and second opposing active surfaces with first contact pads on the first active surface and second contact pads on the second active surface. An encapsulant is deposited over the semiconductor die and temporary carrier. A first interconnect structure is formed over a first surface of the encapsulant. The first interconnect structure is electrically connected to the conductive pillars and first contact pads of the dual-active sided semiconductor die. The temporary carrier is removed. A second interconnect structure is formed over a second surface of the encapsulant opposite the first surface of the encapsulant. The second interconnect structure is electrically connected to the conductive pillars and second contact pads of the dual-active sided semiconductor die.
The invention provides a process for texturing a surface of a semiconductor material, the process comprising: applying a layer of a protective substance on said surface wherein said layer is sufficiently thin that it has a plurality of apertures therethrough; and contacting said layer and said semiconductor material with an etchant capable of etching said semiconductor material faster than said protective substance, said etchant making contact with said semiconductor material at least through said apertures, for a time and under conditions in which said semiconductor material is etched by said etchant in the vicinity of said apertures to produce a textured surface on said semiconductor material, but said protective substance is substantially unetched.
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An ultrasensitive photoelectrochemical (PEC) immunoassay based on multiple signal amplification strategy was fabricated for the detection of microcystin-LR (MC-LR). The CdS/TiO2 nanorod arrays (CdS/TiO2 NRAs) modified FTO electrode, which can weaken the self-oxidation by photogenerated holes of CdS nanoparticles, and limit the recombination of electron-hole pairs and broaden optical absorption of TiO2 NRAs, was used as a visible-light driven material to immobilize antigens. Then, Fe3O4 nanoparticles/polydopamine ([email protected]) was used as the carrier to load secondary antibody (Ab2) and horseradish peroxidase (HRP), where Fe3O4 nanoparticles and HRP can synergistically accelerate the oxidation of 4-chloro-1-naphthol (4-CN) by H2O2 to produce biocatalytic precipitation (BCP) on the surface of modified electrode ...
We present a functional renormalization group approach to the zero bias transport properties of a quantum dot with two different orbitals and in the presence of Hunds coupling. Tuning the energy separation of the orbital states, the quantum dot can be driven through a singlet-triplet transition. Our approach, based on the approach by Karrasch et al (2006 Phys. Rev. B 73 235337), which we apply to spin-dependent interactions, recovers the key characteristics of the quantum dot transport properties with very little numerical effort. We present results on the conductance in the vicinity of the transition and compare our results both with previous numerical renormalization group results and with predictions of the perturbative renormalization group ...
The nanocrystal density with a nearest neighbor within 2 nm for a sample with silicon-rich layer thickness of 3 nm is shown in Fig. 5 c. The highest non-touching nanocrystal density for this structure can be achieved by tuning the silicon-rich layers composition from pure Si to approximately SiO 1.5, with crystallinity values of 0.15 to 1, respectively. A too high crystallinity for layers with relatively low stoichiometry will lead to clustering, while too low crystallinity in layers with high stoichiometry will result in separated but too isolated nanocrystals.. We deposited multilayer films with silicon-rich layer and buffer layer thicknesses of 3 and 1 nm, respectively, and varied the silicon-rich layers compositions and doping. The films were annealed in a tube furnace or rapid thermal annealing furnace. The crystallinity of these films after annealing are shown in Fig. 5.1 The crystallinity in our films does not exceed 0.4. We expect that this is caused by incomplete phase separation ...
Preparation and characterization of well-organized zeolitic nanocrystal aggregates with an interconnected hierarchically micro-meso-macro porous system are described. Amorphous nanoparticles in bimodal aluminosilicates were directly transformed into highly crystalline nanosized zeolites, as well as acting as scaffold template. All pores on three length scales incorporated in one solid body are interconnected with each other. These zeolitic nanocrystal aggregates with hierarchically micro-meso-macroporous structure were thoroughly characterized. TEM images and 29Si NMR spectra showed that the amorphous phase of the initial material had been completely replaced by nanocrystals to give a micro-meso-macroporous crystalline zeolitic structure. Catalytic testing demonstrated their superiority due to the highly active sites and the presence of interconnected micro-meso-macroporosity in the cracking of bulky 1,3,5-triisopropylbenzene (TIPB) compared to traditional zeolite catalysts. This synthesis ...
TRIVENI INTERCHEM PVT. LTD. - Exporter, Manufacturer, Distributor, Supplier, Trading Company of Mercury cadmium telluride based in Vapi, India
The idea depends on prepared quantum dots semiconductor nanoparticles of a highly stable cesium-lead halide perovskite, as well as a composite material made of these quantum dots and graphene oxide. Both materials showed an efficient absorption of visible light and strong luminescence. The leader of team Dai-Bin Kuang and colleagues used these products to achieve a fundamental step in artificial photosynthesis the reduction of CO2. To simulate sunlight, they used a xenon lamp with an appropriate filter.. Perovskite quantum dot photocatalysts surpassed the efficiency of cadmium sulfide and other state-of-the-art materials in the conversion of CO2 to carbon monoxide and methane. Chemists also demonstrated the synergetic effect of the composite - when combined with graphene oxide, perovskite Quantum Dots (QDs) achieved photocatalytic performances 26% higher than QDs alone. According to researchers, graphene oxide boosts the efficiency of the QDs improving the charge separation and transportation. ...
The increasing cost of fossil fuel energy production and its implication in environmental pollution and climate change created high demand for alternative and renewable sources of energy. This has led to great interest in research in the field of photovoltaic or solar cells Due to the abundance of sunlight, the technology is sustainable, non-polluting and can be implemented at places where power demand is needed, for example in rural areas. Solar cell devices that have been commercialized are currently based on silicon technology, involving the use of monocrystalline, polycrystalline and amorphous silicon. Although they produce highly efficient solar cells, the cost of Si solar cells is too high. Second generation solar cell materials such as cadmium telluride and third generation materials such as perovskites and organic polymers have been receiving much attention recently. However, they lack the efficiency of Si solar cells. This research proposes the development of high energy conservation ...
Mid-infrared wavelength range (3 μm to 30 μm) is important in many applications such as environmental monitoring, industrial process control, bio- medical imaging, security and defense. The mid-IR is the spectral home of the distinct vibrational and rotational absorption resonance signatures of a wide range of molecular species, giving mid-IR sensing systems the potential to enable the monitoring and identification of molecules for gas sensing or chemical and biological imaging applications. To enable many of the above applications, compact, high efficiency, and low-cost mid-IR emitters and detectors are required. The goal of this project is to develop highly efficient and low-cost mid-IR emitters. The first part of this thesis gives an introduction to why mid-IR light is important and the state-of-the-art mid-IR sources. We discuss the working theory, structure, advantages and disadvantages of quantum cascade laser (QCL), interband cascade laser and type-I quantum well lasers, which together ...
1. A method for manufacturing a semiconductor device comprising: forming a mask layer containing silicon nitride on a semiconductor layer containing silicon; forming a side wall film on a side wall of the mask layer; etching the semiconductor layer using the mask layer and the side wall film as a mask to form a gate trench in the semiconductor layer; forming a gate electrode in the gate trench via a gate insulating film; removing the side wall film and forming a base region and a source region in the semiconductor layer using the mask layer as a mask; forming an interlayer film covering the semiconductor layer, the gate electrode and the mask layer, and containing silicon oxide; removing the mask layer selectively; and forming a contact trench, by using the interlayer film as a mask, in a portion of the semiconductor layer under a portion where the mask layer is removed ...
This thesis consists of three parts, which revolve around the fabrication of multifunctional glyconanomaterials (cellulose nanocrystals, chitin nanocrystals, mesoporous silica nanoparticles) and the development of their applications in biorecognition and nanomedicine.. Part one presents a detailed introduction to glyconanomaterials, focusing on cellulose nanocrystals, chitin nanocrystals and mesoporous silica nanoparticles, including their general preparations, properties and applications.. Part two demonstrates dually modified cellulose and chitin nanocrystals. They are prepared by TEMPO-mediated oxidation, followed by conjugation with a fluorescent dye and carbohydrate ligands. The two functional nanocrystals are applied in carbohydrate-lectin recognition and bacterial imaging as new types of glyconanomaterials.. Part three describes two types of drug delivery systems based on carbohydrate- conjugated mesoporous silica nanoparticles: the first type is a trehalose- functionalized nanoparticle ...
The tunable fluorescent nanoparticles known as quantum dots make ideal tools for distinguishing and identifying rare cancer cells in tissue biopsies, Emory and Georgia Tech scientists have demonstrated.. An article to be featured on the cover of the July 15 issue of Analytical Chemistry describes how multicolor quantum dots linked to antibodies can distinguish the Reed-Sternberg cells that are characteristic of Hodgkins lymphoma.. "Our multicolor quantum dot staining method provides rapid detection and identification of rare malignant cells from heterogenous tissue specimens," says senior author Shuming Nie, PhD, the Wallace H. Coulter distinguished professor in the Coulter department of biomedical engineering at Georgia Tech and Emory University. "The clinical utility is not limited to Hodgkins lymphoma but potentially could be extended to detect cancer stem cells, tumor-associated macrophages and other rare cell types.". Quantum dots are nanometer-sized semiconductor crystals that have ...
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Cadmium chloride | definition of Cadmium chloride by Medical dictionaryCadmium chloride | definition of Cadmium chloride by Medical dictionary

Cadmium chloride explanation free. What is Cadmium chloride? Meaning of Cadmium chloride medical term. What does Cadmium ... Looking for online definition of Cadmium chloride in the Medical Dictionary? ... Various compounds of cadmium are used commercially in metallurgy, photography, and electrochemistry; a few have been used as ... cadmium. (redirected from Cadmium chloride). Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia. cadmium. (Cd) [kad´ ...
more infohttp://medical-dictionary.thefreedictionary.com/Cadmium+chloride

CDC - Immediately Dangerous to Life or Health Concentrations (IDLH):  Cadmium compounds (as Cd) -  NIOSH Publications and...CDC - Immediately Dangerous to Life or Health Concentrations (IDLH): Cadmium compounds (as Cd) - NIOSH Publications and...

... the revised IDLH for cadmium compounds is 9 mg Cd/m3 which was the original IDLH for cadmium fume. [Note: NIOSH recommends as ... 1. ACGIH [1971]. Cadmium and compounds (as Cd). In: Documentation of the threshold limit values for substances in workroom air ... From ACGIH [1991]. Cadmium and compounds. In: Documentation of the threshold limit values and biological exposure indices. 6th ... NIOSH REL: None established; NIOSH considers cadmium compounds to be potential occupational carcinogens as defined by the OSHA ...
more infohttps://www.cdc.gov/niosh/idlh/7440439.html

Histological observations and morphometric analysis in lungs of hamsters after long term inhalation of cadmium compoundsHistological observations and morphometric analysis in lungs of hamsters after long term inhalation of cadmium compounds

Long term inhalation studies with Syrian hamsters were performed to evaluate the effects of different cadmium compounds on the ... Histological observations and morphometric analysis in lungs of hamsters after long term inhalation of cadmium compounds. ... cadmium; hamster; Inhalation; light microscopy; long-term inhalation; lung; morphometry; pathology. Abstract. ...
more infohttp://publica.fraunhofer.de/dokumente/PX-17248.html

Cadmium and its compounds - Substance Information - ECHACadmium and its compounds - Substance Information - ECHA

Flue dust, cadmium-refining By-product of refining of cadmium consisting primarily of oxides and chlorides of cadmium, lead, ... Leach residues, cadmium cake Residues obtained by cementation of cadmium by iron dust out of cadmium sulfate solutions. ... Calcines, cadmium residue Product of the roasting of cadmium-enriched lead smelting dusts to remove cadmium. Consists primarily ... Cadmium m-toluate 268-458-6 68092-45-5 Expert judgement Fatty acids, C10-18, cadmium salts 268-620-6 68131-58-8 Expert ...
more infohttps://echa.europa.eu/hr/substance-information/-/substanceinfo/100.239.172

Antimony, compound with cadmium (2:3) - Substance Information - ECHAAntimony, compound with cadmium (2:3) - Substance Information - ECHA

Antimony, compound with cadmium (2:3) Regulatory process names 1 CAS names 1 IUPAC names 2 Other identifiers 1 ...
more infohttps://echa.europa.eu/substance-information/-/substanceinfo/100.031.438

Cadmium and its compounds - Apribojimų sąrašas - ECHACadmium and its compounds - Apribojimų sąrašas - ECHA

Flue dust, cadmium-refining By-product of refining of cadmium consisting primarily of oxides and chlorides of cadmium, lead, ... Leach residues, cadmium cake Residues obtained by cementation of cadmium by iron dust out of cadmium sulfate solutions. ... Calcines, cadmium residue Product of the roasting of cadmium-enriched lead smelting dusts to remove cadmium. Consists primarily ... Cadmium divanadium hexoxide 240-203-3 16056-72-7 Expert judgement 5-oxo-L-proline, cadmium salt 240-269-3 16105-06-9 Expert ...
more infohttps://www.echa.europa.eu/lt/web/guest/substances-restricted-under-reach/-/dislist/details/0b0236e1807e2518

Cadmium oxide | chemical compound | Britannica.comCadmium oxide | chemical compound | Britannica.com

... cadmium: Compounds: …most important cadmium compound is cadmium oxide, CdO. It is a brown powder produced by burning cadmium ... Another compound of some economic value is cadmium sulfide, CdS. Generally produced by treating cadmium… ... vapor in air, and it provides a convenient starting material for the production of most other cadmium salts. ... In cadmium: Compounds. …most important cadmium compound is cadmium oxide, CdO. It is a brown powder produced by burning cadmium ...
more infohttps://www.britannica.com/science/cadmium-oxide

Cadmium and its compounds - Списък с ограничения - ECHACadmium and its compounds - Списък с ограничения - ECHA

Flue dust, cadmium-refining By-product of refining of cadmium consisting primarily of oxides and chlorides of cadmium, lead, ... Leach residues, cadmium cake Residues obtained by cementation of cadmium by iron dust out of cadmium sulfate solutions. ... Calcines, cadmium residue Product of the roasting of cadmium-enriched lead smelting dusts to remove cadmium. Consists primarily ... Cadmium divanadium hexoxide 240-203-3 16056-72-7 Expert judgement 5-oxo-L-proline, cadmium salt 240-269-3 16105-06-9 Expert ...
more infohttps://echa.europa.eu/bg/substances-restricted-under-reach/-/dislist/details/0b0236e1807e2518

Cadmium and its compounds - Liste des restrictions - ECHACadmium and its compounds - Liste des restrictions - ECHA

Flue dust, cadmium-refining By-product of refining of cadmium consisting primarily of oxides and chlorides of cadmium, lead, ... Leach residues, cadmium cake Residues obtained by cementation of cadmium by iron dust out of cadmium sulfate solutions. ... Calcines, cadmium residue Product of the roasting of cadmium-enriched lead smelting dusts to remove cadmium. Consists primarily ... Cadmium divanadium hexoxide 240-203-3 16056-72-7 Expert judgement 5-oxo-L-proline, cadmium salt 240-269-3 16105-06-9 Expert ...
more infohttps://www.echa.europa.eu/fr/web/guest/substances-restricted-under-reach/-/dislist/details/0b0236e1807e2518

Cadmium Selenide Compound - online catalogue source - supplier of research materials in small quantities - GoodfellowCadmium Selenide Compound - online catalogue source - supplier of research materials in small quantities - Goodfellow

Compounds, Intermetallics & Composites for research & industrial markets. View our small quantity Catalogue. ... Cadmium Selenide ( CdSe ). Material Information Buy Cadmium Selenide on-line. We stock and supply the following standard forms: ...
more infohttp://www.goodfellow.com/E/Cadmium-Selenide-Compound.html

All the information on Cadmium - Management of the risks related to Chronic Occupational Exposure to Cadmium and its compounds ...All the information on Cadmium - Management of the risks related to Chronic Occupational Exposure to Cadmium and its compounds ...

The International Cadmium Association (ICdA) is a non-profit organisation based in Belgium with a regional office in North ... cadmium compounds, and products to which cadmium or its compounds have intentionally been added. ... Management of the risks related to Chronic Occupational Exposure to Cadmium and its compounds (2018.2 revision) ... The International Cadmium Association (ICdA) is a non-profit association representing the interests of the worlds cadmium ...
more infohttps://www.cadmium.org/news/2018/12/12/management-of-the-risks-related-to-chronic-occupational-exposure-to-cadmium-and-its-compounds-20182-revision

Phenylalanine Ammonia-Lyase and Phenolic Compounds in Chamomile Tolerance to Cadmium and Copper ExcessPhenylalanine Ammonia-Lyase and Phenolic Compounds in Chamomile Tolerance to Cadmium and Copper Excess

Home » Phenylalanine Ammonia-Lyase and Phenolic Compounds in Chamomile Tolerance to Cadmium and Copper Excess ... Phenylalanine Ammonia-Lyase and Phenolic Compounds in Chamomile Tolerance to Cadmium and Copper Excess. ... Cadmium (Cd) and copper (Cu) uptake by the plants of Matricaria chamomilla and relation to activities of guaiacol peroxidase ( ... Oxidative status of Matricaria chamomilla plants related to cadmium and copper uptake. Kováčik, Jozef; Bačkor, Martin // ...
more infohttp://connection.ebscohost.com/c/articles/26618618/phenylalanine-ammonia-lyase-phenolic-compounds-chamomile-tolerance-cadmium-copper-excess

Pay attention to the hazardous cadmium in phosphate fertilizer--《Phosphate & Compound Fertilizer》2002年06期Pay attention to the hazardous cadmium in phosphate fertilizer--《Phosphate & Compound Fertilizer》2002年06期

Cadmium is contained in phosphate rock and phosphate fertilizer, it accumulates in soils and enters the food chain, which ... Changes of Seed Quality and Cadmium Content of Different Peanut Genotypes under Cadmium Stress[J];Shandong Agricultural ... Cadmium is contained in phosphate rock and phosphate fertilizer, it accumulates in soils and enters the food chain, which ... Pay attention to the hazardous cadmium in phosphate fertilizer. MA Rong(Room 1501, Building 24, South Liufang Lane, Chaoyang ...
more infohttp://en.cnki.com.cn/Article_en/CJFDTOTAL-LFYF200206002.htm

NIOSHTIC-2  Publications Search - 20023533 - Proto-oncogene activation and genomic instability of cadmium-induced cell...NIOSHTIC-2 Publications Search - 20023533 - Proto-oncogene activation and genomic instability of cadmium-induced cell...

Therefore, exposure to cadmium is widespread and presents a considerable health concern. Cadmium is known to be a carcinogen; ... Cadmium (Cd) is an essential material used in the battery, metal-coating, and alloy industries. In addition to these industrial ... Cell-transformation; Cadmium-compounds; Cigarette-smoking; Health-hazards; Carcinogens; Carcinogenesis; Cancer; Genes; Proteins ... Therefore, exposure to cadmium is widespread and presents a considerable health concern. Cadmium is known to be a carcinogen; ...
more infohttps://www.cdc.gov/niosh/nioshtic-2/20023533.html

Wiley Reference Works - Ullmanns Encyclopedia of Industrial Chemistry - Related TitlesWiley Reference Works - Ullmann's Encyclopedia of Industrial Chemistry - Related Titles

Boron Compounds. Bromine. Bromine Compounds. C. Cadmium Compounds. Calcium Carbide. Calcium Chloride. Calcium Sulfate. Carbides ... Ammonium Compounds. Antimony Compounds. Arsenic Compounds. B. Barium Compounds. Beryllium Compounds. Bismuth Compounds. Boric ... Titanium Compounds. Tungsten Compounds. V. Vanadium Compounds. W. Water. Z. Zeolites. Zinc Compounds. Zirconium Compounds. ... Iodine and Iodine Compounds. Iron Compounds. L. Lead Compounds. Lime and Limestone. Lithium Compounds. M. Magnesium Compounds. ...
more infohttp://www.wiley.com/legacy/products/subject/reference/ullmanns_related.html

Fungicides facts, information, pictures | Encyclopedia.com articles about FungicidesFungicides facts, information, pictures | Encyclopedia.com articles about Fungicides

Organotin compounds. Fentin, triphenyl tin. Cadmium compounds. Miscellaneous organic fungicides. Benomyl, cyclohexamide, ... Sulfur compounds, long used on plants, have been supplemented for some time by other chemicals, especially by compounds of ... Organotin compounds also have serious human toxicity and are very toxic to the environment; their use is banned or severely ... Sulfur, sulfur-containing compounds, organic salts of iron, and heavy metals are all used as fungicides. Other fungicide types ...
more infohttps://www.encyclopedia.com/science-and-technology/biology-and-genetics/environmental-studies/fungicides

NJDEP New Jersey Department of Environmental ProtectionNJDEP New Jersey Department of Environmental Protection

Cadmium Compounds. 0.00004. 0.00024. 0.2. 39%. 61%. 0%. 0.3%. 0%. Carbon Tetrachloride. 0.3. 0.067. 4. 0%. 0.1%. 0%. 0%. 100%. ...
more infohttps://www.nj.gov/dep/airmon/airtoxics/cumberla.htm

Chemical method for producing nanoscale semiconductor compound CdS in a polymer matrix; Khimicheskij metod polucheniya...Chemical method for producing nanoscale semiconductor compound CdS in a polymer matrix; Khimicheskij metod polucheniya...

36 MATERIALS SCIENCE; CADMIUM COMPOUNDS; CADMIUM SULFIDES; LUMINESCENCE; PARTICLES; PHOTOLUMINESCENCE; SULFUR COMPOUNDS; ... The results of cadmium sulfide synthesis in a polymer matrix from cadmium stearate and tiourea are given. Luminescent ... abstractNote = {The results of cadmium sulfide synthesis in a polymer matrix from cadmium stearate and tiourea are given. ... ETDEWEB / Search Results / Chemical method for producing nanoscale semiconductor compound CdS in a polymer matrix; Khimicheskij ...
more infohttps://www.osti.gov/etdeweb/biblio/22147610

Effects of heavy metals on the mulberry plant and silkworm. I. Effects of cadmium and zinc on silkworm larvae, Bombyx mori L ...Effects of heavy metals on the mulberry plant and silkworm. I. Effects of cadmium and zinc on silkworm larvae, Bombyx mori L ...

CADMIUM COMPOUNDS; ELEMENTS; INSECTS; INTAKE; INVERTEBRATES; LEPIDOPTERA; METALS; MOTHS; OXYGEN COMPOUNDS; SULFATES; SULFUR ... MAT.; CADMIUM; BIOLOGICAL EFFECTS; DOSE-RESPONSE RELATIONSHIPS; ZINC; CADMIUM SULFATES; DIET; INGESTION; LARVAE; LIFE CYCLE; ... I. Effects of cadmium and zinc on silkworm larvae, Bombyx mori L}. author = {Miyoshi, T, Miyazawa, F, and Shimizu, O}. ... Cadmium sulfate and zinc sulate salts in graded concentration were fed to silkworm larvae using an artificial diet. Tests were ...
more infohttps://www.osti.gov/etdeweb/biblio/5720793

Known and Probable Human CarcinogensKnown and Probable Human Carcinogens

Cadmium and cadmium compounds. *Chlorambucil. *1-(2-Chloroethyl)-3-(4-methylcyclohexyl)-1-nitrosourea (MeCCNU) ... Arsenic and inorganic arsenic compounds. *Asbestos (all forms) and mineral substances (such as talc or vermiculite) that ...
more infohttp://www.cancer.org/cancer/cancer-causes/general-info/known-and-probable-human-carcinogens.html

Oregon Health Authority : High Priority Chemicals of Concern for Childrens Health : Toxic Substances : State of OregonOregon Health Authority : High Priority Chemicals of Concern for Children's Health : Toxic Substances : State of Oregon

Cadmium and cadmium compounds. Lung, and other organ cancers; liver and kidney effects; reproductive system effects; central ... Cobalt and cobalt compounds. Respiratory effects such as asthma, wheezing and pneumonia. Lung and other organ cancers; ... Antimony and Antimony compounds. Eye irritation; skin and gastrointestinal system effects. Lung cancer; eye irritation; ... Mercury and mercury compounds including methyl mercury. Central nervous system effects; developmental effects; persistent, ...
more infohttp://www.oregon.gov/OHA/PH/HEALTHYENVIRONMENTS/HEALTHYNEIGHBORHOODS/TOXICSUBSTANCES/Pages/childrens-chemicals-of-concern.aspx

DRDB: SDAPCD 1200 TOXIC AIR CONTAMINANTS - NEW SOURCE REVIEWDRDB: SDAPCD 1200 TOXIC AIR CONTAMINANTS - NEW SOURCE REVIEW

Cadmium. _Nickel and nickel compounds. _Cadmium compounds. _N-Nitrosodiethylamine. _Carbon tetrachloride. _N- ...
more infohttps://www.arb.ca.gov/drdb/sd/suphtml/1200_s_2-02.htm
  • These members are either explicitly mentioned in the specific restriction entry, or they are identified by ECHA in case the entry is of general nature (like cadmium and its compounds). (europa.eu)
  • Abstract Surface decontamination efficacy determination of DeconGelTM 1101 on stainless steel, aluminum, and concrete surfaces contaminated with amine compounds (aniline) was performed using GC/MS (Gas Chromatography/Mass Spectrometry) according to Environmental Protection Agency (EPA) SW-846 Methods: 3500C (Sampling) and 8270C (Analysis). (environmental-expert.com)
  • Phenylalanine ammonia-lyase activity (PAL, EC 4.3.1.5), total phenolics, soluble proteins, malondialdehyde and metals accumulation in four-week old chamomile ( Matricaria chamomilla) plants cultivated in nutrient solution and exposed to low (3 μM) and high (60 and 120 μM) levels of cadmium (Cd) or copper (Cu) for 7 days were studied. (ebscohost.com)
  • NIOSH considers cadmium compounds to be potential occupational carcinogens as defined by the OSHA carcinogen policy [29 CFR (cdc.gov)
  • Its Members include producers, processors, recyclers and consumers of cadmium metal, cadmium compounds, and products to which cadmium or its compounds have intentionally been added. (cadmium.org)
  • Cadmium (Cd) is an essential material used in the battery, metal-coating, and alloy industries. (cdc.gov)
  • This concentration is approximately that at which incipient morphologic changes occur in the kidneys of cadmium-exposed workers. (cdc.gov)
  • Cadmium is contained in phosphate rock and phosphate fertilizer, it accumulates in soils and enters the food chain, which have the negative effects on human health.We must pay a deep attention to these problems, and take some steps to set a technical barrier to protect our environment and our phosphate fertilizer. (cnki.com.cn)
  • Proto-oncogene activation and genomic instability of cadmium-induced cell transformation in BALB/c-3T3 cells. (cdc.gov)
  • The International Cadmium Association (ICdA) is a non-profit association representing the interests of the world's cadmium industry. (cadmium.org)