Radiometry: The measurement of radiation by photography, as in x-ray film and film badge, by Geiger-Mueller tube, and by SCINTILLATION COUNTING.Air Ionization: The dissociation of molecules in the air into positive and negative ions under the influence of an electric field.Film Dosimetry: Use of a device (film badge) for measuring exposure of individuals to radiation. It is usually made of metal, plastic, or paper and loaded with one or more pieces of x-ray film.Particle Accelerators: Devices which accelerate electrically charged atomic or subatomic particles, such as electrons, protons or ions, to high velocities so they have high kinetic energy.Scintillation Counting: Detection and counting of scintillations produced in a fluorescent material by ionizing radiation.Radiotherapy, High-Energy: Radiotherapy using high-energy (megavolt or higher) ionizing radiation. Types of radiation include gamma rays, produced by a radioisotope within a teletherapy unit; x-rays, electrons, protons, alpha particles (helium ions) and heavy charged ions, produced by particle acceleration; and neutrons and pi-mesons (pions), produced as secondary particles following bombardment of a target with a primary particle.Dictionaries, MedicalAir: The mixture of gases present in the earth's atmosphere consisting of oxygen, nitrogen, carbon dioxide, and small amounts of other gases.Dictionaries as Topic: Lists of words, usually in alphabetical order, giving information about form, pronunciation, etymology, grammar, and meaning.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)Water Purification: Any of several processes in which undesirable impurities in water are removed or neutralized; for example, chlorination, filtration, primary treatment, ion exchange, and distillation. It includes treatment of WASTE WATER to provide potable and hygienic water in a controlled or closed environment as well as provision of public drinking water supplies.Household Articles: Various material objects and items in the home. It includes temporary or permanent machinery and appliances. It does not include furniture or interior furnishings (FURNITURE see INTERIOR DESIGN AND FURNISHINGS; INTERIOR FURNISHINGS see INTERIOR DESIGN AND FURNISHINGS).Filtration: A process of separating particulate matter from a fluid, such as air or a liquid, by passing the fluid carrier through a medium that will not pass the particulates. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)Air Conditioning: The maintenance of certain aspects of the environment within a defined space to facilitate the function of that space; aspects controlled include air temperature and motion, radiant heat level, moisture, and concentration of pollutants such as dust, microorganisms, and gases. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)China: A country spanning from central Asia to the Pacific Ocean.Rumen: The first stomach of ruminants. It lies on the left side of the body, occupying the whole of the left side of the abdomen and even stretching across the median plane of the body to the right side. It is capacious, divided into an upper and a lower sac, each of which has a blind sac at its posterior extremity. The rumen is lined by mucous membrane containing no digestive glands, but mucus-secreting glands are present in large numbers. Coarse, partially chewed food is stored and churned in the rumen until the animal finds circumstances convenient for rumination. When this occurs, little balls of food are regurgitated through the esophagus into the mouth, and are subjected to a second more thorough mastication, swallowed, and passed on into other parts of the compound stomach. (From Black's Veterinary Dictionary, 17th ed)Technology, High-Cost: Advanced technology that is costly, requires highly skilled personnel, and is unique in its particular application. Includes innovative, specialized medical/surgical procedures as well as advanced diagnostic and therapeutic equipment.Animal Feed: Foodstuff used especially for domestic and laboratory animals, or livestock.Air Pollution, Indoor: The contamination of indoor air.Flame Ionization: Pyrolysis of organic compounds at the temperature of a hydrogen-air flame to produce ionic intermediates which can be collected and the resulting ion current measured by gas chromatography.Chromatography, Gas: Fractionation of a vaporized sample as a consequence of partition between a mobile gaseous phase and a stationary phase held in a column. Two types are gas-solid chromatography, where the fixed phase is a solid, and gas-liquid, in which the stationary phase is a nonvolatile liquid supported on an inert solid matrix.Oils, Volatile: Oils which evaporate readily. The volatile oils occur in aromatic plants, to which they give odor and other characteristics. Most volatile oils consist of a mixture of two or more TERPENES or of a mixture of an eleoptene (the more volatile constituent of a volatile oil) with a stearopten (the more solid constituent). The synonym essential oils refers to the essence of a plant, as its perfume or scent, and not to its indispensability.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.Gas Chromatography-Mass Spectrometry: A microanalytical technique combining mass spectrometry and gas chromatography for the qualitative as well as quantitative determinations of compounds.Gases: The vapor state of matter; nonelastic fluids in which the molecules are in free movement and their mean positions far apart. Gases tend to expand indefinitely, to diffuse and mix readily with other gases, to have definite relations of volume, temperature, and pressure, and to condense or liquefy at low temperatures or under sufficient pressure. (Grant & Hackh's Chemical Dictionary, 5th ed)Ozone: The unstable triatomic form of oxygen, O3. It is a powerful oxidant that is produced for various chemical and industrial uses. Its production is also catalyzed in the ATMOSPHERE by ULTRAVIOLET RAY irradiation of oxygen or other ozone precursors such as VOLATILE ORGANIC COMPOUNDS and NITROGEN OXIDES. About 90% of the ozone in the atmosphere exists in the stratosphere (STRATOSPHERIC OZONE).Flame Retardants: Materials applied to fabrics, bedding, furniture, plastics, etc. to retard their burning; many may leach out and cause allergies or other harm.Explosive Agents: Substances that are energetically unstable and can produce a sudden expansion of the material, called an explosion, which is accompanied by heat, pressure and noise. Other things which have been described as explosive that are not included here are explosive action of laser heating, human performance, sudden epidemiological outbreaks, or fast cell growth.Reproducibility of Results: The statistical reproducibility of measurements (often in a clinical context), including the testing of instrumentation or techniques to obtain reproducible results. The concept includes reproducibility of physiological measurements, which may be used to develop rules to assess probability or prognosis, or response to a stimulus; reproducibility of occurrence of a condition; and reproducibility of experimental results.Encyclopedias 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)Clinical Trials as Topic: Works about pre-planned studies of the safety, efficacy, or optimum dosage schedule (if appropriate) of one or more diagnostic, therapeutic, or prophylactic drugs, devices, or techniques selected according to predetermined criteria of eligibility and observed for predefined evidence of favorable and unfavorable effects. This concept includes clinical trials conducted both in the U.S. and in other countries.Treatment Outcome: Evaluation undertaken to assess the results or consequences of management and procedures used in combating disease in order to determine the efficacy, effectiveness, safety, and practicability of these interventions in individual cases or series.Antineoplastic Combined Chemotherapy Protocols: The use of two or more chemicals simultaneously or sequentially in the drug therapy of neoplasms. The drugs need not be in the same dosage form.Salvage Therapy: A therapeutic approach, involving chemotherapy, radiation therapy, or surgery, after initial regimens have failed to lead to improvement in a patient's condition. Salvage therapy is most often used for neoplastic diseases.Algorithms: A procedure consisting of a sequence of algebraic formulas and/or logical steps to calculate or determine a given task.MedlinePlus: NATIONAL LIBRARY OF MEDICINE service for health professionals and consumers. It links extensive information from the National Institutes of Health and other reviewed sources of information on specific diseases and conditions.Databases, Factual: Extensive collections, reputedly complete, of facts and data garnered from material of a specialized subject area and made available for analysis and application. The collection can be automated by various contemporary methods for retrieval. The concept should be differentiated from DATABASES, BIBLIOGRAPHIC which is restricted to collections of bibliographic references.Drug Administration Schedule: Time schedule for administration of a drug in order to achieve optimum effectiveness and convenience.Antineoplastic Agents: Substances that inhibit or prevent the proliferation of NEOPLASMS.Electromagnetic Fields: Fields representing the joint interplay of electric and magnetic forces.Earthquakes: Sudden slips on a fault, and the resulting ground shaking and radiated seismic energy caused by the slips, or by volcanic or magmatic activity, or other sudden stress changes in the earth. Faults are fractures along which the blocks of EARTH crust on either side have moved relative to one another parallel to the fracture.Electromagnetic Phenomena: Characteristics of ELECTRICITY and magnetism such as charged particles and the properties and behavior of charged particles, and other phenomena related to or associated with electromagnetism.ItalyRadiation, Nonionizing: ELECTROMAGNETIC RADIATION or sonic radiation (SOUND WAVES) which does not produce IONS in matter through which it passes. The wavelengths of non-ionizing electromagentic radiation are generally longer than those of far ultraviolet radiation and range through the longest RADIO WAVES.Dirofilaria: A genus of filarial nematodes. Various immature species have been found to infect the eyes or subcutaneous tissue in humans.Electromagnetic Radiation: Waves of oscillating electric and MAGNETIC FIELDS which move at right angles to each other and outward from the source.Magnetic Field Therapy: The magnetic stimulation of specific target tissues or areas of the body for therapeutic purposes via the application of magnetic fields generated by MAGNETS or ELECTROMAGNETS.Corylus: A plant genus of the family BETULACEAE known for the edible nuts.Radio Waves: Electromagnetic waves with frequencies between about 3 kilohertz (very low frequency - VLF) and 300,000 megahertz (extremely high frequency - EHF). They are used in television and radio broadcasting, land and satellite communications systems, radionavigation, radiolocation, and DIATHERMY. The highest frequency radio waves are MICROWAVES.PrintingInkPatents as Topic: Exclusive legal rights or privileges applied to inventions, plants, etc.Tin Compounds: Inorganic compounds that contain tin as an integral part of the molecule.Man-Machine Systems: A system in which the functions of the man and the machine are interrelated and necessary for the operation of the system.Rod Opsins: Photosensitive proteins expressed in the ROD PHOTORECEPTOR CELLS. They are the protein components of rod photoreceptor pigments such as RHODOPSIN.Static Electricity: The accumulation of an electric charge on a objectImage Processing, Computer-Assisted: A technique of inputting two-dimensional images into a computer and then enhancing or analyzing the imagery into a form that is more useful to the human observer.Inventions: A novel composition, device, or process, independently conceived de novo or derived from a pre-existing model.Air Microbiology: The presence of bacteria, viruses, and fungi in the air. This term is not restricted to pathogenic organisms.Mycobacterium tuberculosis: A species of gram-positive, aerobic bacteria that produces TUBERCULOSIS in humans, other primates, CATTLE; DOGS; and some other animals which have contact with humans. Growth tends to be in serpentine, cordlike masses in which the bacilli show a parallel orientation.Ventilation: Supplying a building or house, their rooms and corridors, with fresh air. The controlling of the environment thus may be in public or domestic sites and in medical or non-medical locales. (From Dorland, 28th ed)Air Movements: The motion of air currents.Hospital Design and Construction: The architecture, functional design, and construction of hospitals.Tuberculosis: Any of the infectious diseases of man and other animals caused by species of MYCOBACTERIUM.Aerosols: Colloids with a gaseous dispersing phase and either liquid (fog) or solid (smoke) dispersed phase; used in fumigation or in inhalation therapy; may contain propellant agents.Tuberculosis, Pulmonary: MYCOBACTERIUM infections of the lung.

Factors influencing the analytical performance of an atmospheric sampling glow discharge ionization source as revealed via ionization dynamics modeling. (1/24)

A kinetic model is developed for the dynamic events occurring within an atmospheric sampling glow discharge that affect its performance as an ion source for analytical mass spectrometry. The differential equations incorporate secondary electron generation and thermalization, reagent and analyte ion formation via electron capture and ion-molecule reactions, ion loss via recombination processes, diffusion, and ion-molecule reactions with matrix components, and the sampling and pumping parameters of the source. Because the ion source has a flow-through configuration, the number densities of selected species can be estimated by applying the steady-state assumption. However, understanding of its operation is aided by knowledge of the dynamic behavior, so numerical methods are applied to examine the time dependence of those species as well. As in other plasma ionization sources, the ionization efficiency is essentially determined by the ratio of the relevant ion formation and recombination rates. Although thermal electron and positive reagent ion number densities are comparable, the electron capture/ion-molecule reaction rate coefficient ratio is normally quite large and the ion-electron recombination rate coefficient is about an order of magnitude greater than that for ion-ion recombination. Consequently, the efficiency for negative analyte ion formation via electron capture is generally superior to that for positive analyte ion generation via ion-molecule reaction. However, the efficiency for positive analyte ion formation should be equal to or better than that for negative analyte ions when both ionization processes occur via ion-molecule reaction processes (with comparable rate coefficients), since the negative reagent ion density is considerably less than that for positive reagent ions. Furthermore, the particularly high number densities of thermal electrons and reagent ions leads to a large dynamic range of linear response for the source. Simulation results also suggest that analyte ion number densities might be enhanced by modification of the standard physical and operating parameters of the source.  (+info)

Millisecond pulsed radio frequency glow discharge time of flight mass spectrometry: temporal and spatial variations in molecular energetics. (2/24)

The internal energy distributions, P(epsilon), of a millisecond pulsed radio frequency glow discharge plasma were investigated using tungsten hexcarbonyl W(CO)(6) as a "thermometer molecule". Vapor of the probe molecule, W(CO)(6), was introduced into the plasma and subjected to various ionization and excitation processes therein. The resultant molecular and fragment ions were monitored using a Time-of-Flight mass spectrometer. Ion abundance data were utilized in combination with the known energetics of W(CO)(6) to construct the P(epsilon) plots. The P(epsilon) of W(CO)(6) exhibited strong temporal dependence over the pulse cycle: Distinct internal energy distributions were found at the discharge breakdown period (prepeak), the steady state period (plateau), and the post-pulse period (afterpeak). Spatial variation in P(epsilon) was also observed, especially during the plateau regime. The observations suggest that this pulsed glow discharge affords excellent energy tunability that can be used to perform selective ionization and fragmentation for molecular, structural, and elemental information. Parametric studies were performed to evaluate the effects of discharge pressure and operating power on P(epsilon). These studies also provided insight into the correlation of the observed P(epsilon)s with the fundamental ionization and excitation mechanisms in the plasma. The temporal and spatial variations in P(epsilon) were hence attributed to changes in the dominant energy transfer processes at specific times in specific regions of the plasma. These data will be useful in future efforts to optimize the analytical performance of this source for chemical speciation.  (+info)

Comparison of electrospray ionization, atmospheric pressure chemical ionization, and atmospheric pressure photoionization for the analysis of dinitropyrene and aminonitropyrene LC-MS/MS. (3/24)

The only relevant source for human exposure to dinitropyrenes is diesel engine emissions. Due to this specificity, dinitropyrenes may be used as biomarkers for monitoring human exposure to diesel engine emissions. Only few analytical methods have been described for the quantitation of dinitropyrenes and their metabolites, aminonitropyrenes, and diaminopyrenes. Therefore, for dinitropyrenes, aminonitropyrenes, and diaminopyrenes were selected as model compounds for the development of a sensitive HPLC-MS/MS method (high performance liquid chromatography coupled to triple quadrupole mass spectrometry) was to quantify polyaromatic amines and nitroarenes in biological matrices was developed optimal methods by comparing electrospray ionization (ESI), atmospheric pressure chemical ionization (APCI), and atmospheric pressure photoionization (APPI) sources. Dinitropyrene was not effectively ionized and diaminopyrene yielded mainly [M(.)](+) ions by electrospray ionization. With APCI and APPI, precursor ions of diaminopyrene and aminonitropyrene were [M + H](+) and [M(.)](-) for dinitropyrene. Precursor ions with [M - 30(.)](-) for dinitropyrene and [M - 30 + H](+) for aminonitropyrene were observed. Reversed and normal phase HPLC-MS/MS with ESI, APCI and APPI were optimized separately with respect to unequivocal analyte identification and sensitivity. Normal phase HPLC coupled to APPI-MS/MS gave the highest precision and sensitivity for aminonitropyrene (6%/0.2 pg on column) and dinitropyrene (9%/0.5 pg on column). The limit of detection in spiked rat plasma was 5 pg/100 microL for aminonitropyrene (accuracy 82%) and 10 pg/100 microL for dinitropyrene (accuracy 105%). In plasma of rats treated with dinitropyrene by oral administration, no detectable levels of dinitropyrene but higher aminonitropyrene levels compared with intratracheal instillation were observed. These findings clearly demonstrate that dinitropyrene was absorbed after oral and intratracheal application and that a reduction of nitro groups occurs to a high extent in the reductive environment of the intestine. To our knowledge, this is the first time that aminonitropyrene was observed in plasma after intratracheal or oral administration directly demonstrating the reductive metabolism of dinitropyrene in vivo.  (+info)

Studies on the effects of ionization on bacterial aerosols in a burns and plastic surgery unit. (4/24)

The effect of the ionization of the air on the decay of bacterial aerosols was studied in a Burns and Plastic Surgery Unit. Ions were generated by free corona needles. The air content of bacteria measured by settle plates was found to be smaller during the ionization period than during the controls period. The number of individual phage typed Staph. aureus strains was especially found to be lower during ionization. The opposite potential increased the disappearance of bacteria from the air. The size of skin particles carrying bacteria is not optimum, but the results obtained show that the ionization may have applications in controlling airborne infection.  (+info)

Reduced flavin: NMR investigation of N5-H exchange mechanism, estimation of ionisation constants and assessment of properties as biological catalyst. (5/24)

BACKGROUND: The flavin in its FMN and FAD forms is a versatile cofactor that is involved in catalysis of most disparate types of biological reactions. These include redox reactions such as dehydrogenations, activation of dioxygen, electron transfer, bioluminescence, blue light reception, photobiochemistry (as in photolyases), redox signaling etc. Recently, hitherto unrecognized types of biological reactions have been uncovered that do not involve redox shuffles, and might involve the reduced form of the flavin as a catalyst. The present work addresses properties of reduced flavin relevant in this context. RESULTS: N(5)-H exchange reactions of the flavin reduced form and its pH dependence were studied using the 15N-NMR-signals of 15N-enriched, reduced flavin in the pH range from 5 to 12. The chemical shifts of the N(3) and N(5) resonances are not affected to a relevant extent in this pH range. This contrasts with the multiplicity of the N(5)-resonance, which strongly depends on pH. It is a doublet between pH 8.45 and 10.25 that coalesces into a singlet at lower and higher pH values. From the line width of the 15N(5) signal the pH-dependent rate of hydrogen exchange was deduced. The multiplicity of the 15N(5) signal and the proton exchange rates are little dependent on the buffer system used. CONCLUSION: The exchange rates allow an estimation of the pKa value of N(5)-H deprotonation in reduced flavin to be >or= 20. This value imposes specific constraints for mechanisms of flavoprotein catalysis based on this process. On the other hand the pK asymptotically equal to 4 for N(5)-H protonation (to form N(5)+-H2) would be consistent with a role of N(5)-H as a base.  (+info)

Hospital-acquired legionnaires disease in a university hospital: impact of the copper-silver ionization system. (6/24)

We evaluated the impact of the copper-silver ionization system in a hospital where hyperendemic nosocomial legionellosis and was present and all previous disinfection measures had failed. After implementation of the copper-silver ionization system, environmental colonization with Legionella species decreased significantly, and the incidence of nosocomial legionellosis decreased dramatically, from 2.45 to 0.18 cases per 1000 patient discharges.  (+info)

Bactericidal action of positive and negative ions in air. (7/24)

BACKGROUND: In recent years there has been renewed interest in the use of air ionisers to control of the spread of airborne infection. One characteristic of air ions which has been widely reported is their apparent biocidal action. However, whilst the body of evidence suggests a biocidal effect in the presence of air ions the physical and biological mechanisms involved remain unclear. In particular, it is not clear which of several possible mechanisms of electrical origin (i.e. the action of the ions, the production of ozone, or the action of the electric field) are responsible for cell death. A study was therefore undertaken to clarify this issue and to determine the physical mechanisms associated with microbial cell death. RESULTS: In the study seven bacterial species (Staphylococcus aureus, Mycobacterium parafortuitum, Pseudomonas aeruginosa, Acinetobacter baumanii, Burkholderia cenocepacia, Bacillus subtilis and Serratia marcescens) were exposed to both positive and negative ions in the presence of air. In order to distinguish between effects arising from: (i) the action of the air ions; (ii) the action of the electric field, and (iii) the action of ozone, two interventions were made. The first intervention involved placing a thin mica sheet between the ionisation source and the bacteria, directly over the agar plates. This intervention, while leaving the electric field unaltered, prevented the air ions from reaching the microbial samples. In addition, the mica plate prevented ozone produced from reaching the bacteria. The second intervention involved placing an earthed wire mesh directly above the agar plates. This prevented both the electric field and the air ions from impacting on the bacteria, while allowing any ozone present to reach the agar plate. With the exception of Mycobacterium parafortuitum, the principal cause of cell death amongst the bacteria studied was exposure to ozone, with electroporation playing a secondary role. However in the case of Mycobacterium parafortuitum, electroporation resulting from exposure to the electric field appears to have been the principal cause of cell inactivation. CONCLUSION: The results of the study suggest that the bactericidal action attributed to negative air ions by previous researchers may have been overestimated.  (+info)

The detection of airborne transmission of tuberculosis from HIV-infected patients, using an in vivo air sampling model. (8/24)

BACKGROUND: Nosocomial transmission of tuberculosis remains an important public health problem. We created an in vivo air sampling model to study airborne transmission of tuberculosis from patients coinfected with human immunodeficiency virus (HIV) and to evaluate environmental control measures. METHODS: An animal facility was built above a mechanically ventilated HIV-tuberculosis ward in Lima, Peru. A mean of 92 guinea pigs were continuously exposed to all ward exhaust air for 16 months. Animals had tuberculin skin tests performed at monthly intervals, and those with positive reactions were removed for autopsy and culture for tuberculosis. RESULTS: Over 505 consecutive days, there were 118 ward admissions by 97 patients with pulmonary tuberculosis, with a median duration of hospitalization of 11 days. All patients were infected with HIV and constituted a heterogeneous group with both new and existing diagnoses of tuberculosis. There was a wide variation in monthly rates of guinea pigs developing positive tuberculin test results (0%-53%). Of 292 animals exposed to ward air, 159 developed positive tuberculin skin test results, of which 129 had laboratory confirmation of tuberculosis. The HIV-positive patients with pulmonary tuberculosis produced a mean of 8.2 infectious quanta per hour, compared with 1.25 for HIV-negative patients with tuberculosis in similar studies from the 1950s. The mean monthly patient infectiousness varied greatly, from production of 0-44 infectious quanta per hour, as did the theoretical risk for a health care worker to acquire tuberculosis by breathing ward air. CONCLUSIONS: HIV-positive patients with tuberculosis varied greatly in their infectiousness, and some were highly infectious. Use of environmental control strategies for nosocomial tuberculosis is therefore a priority, especially in areas with a high prevalence of both tuberculosis and HIV infection.  (+info)

*Air ioniser

"Quantification of Ozone Levels in Indoor Environments Generated by Ionization and Ozonolysis Air Purifiers" (PDF). Air & Waste ... Air ionisers are used in air purifiers to remove particles from air. Airborne particles are attracted to the electrode in an ... Air ionisers have been used to eliminate the occurrence of air-borne bacterial infections and to reduce static electricity ... Most commercial air purifiers are designed to generate negative ions. Another type of air ioniser is the electrostatic ...

*Negative air ionization therapy

... is the use of air ionizers as an experimental non-pharmaceutical treatment for seasonal ... Terman, M.; Terman, J.; Ross, D. (1998). "A Controlled Trial of Timed Bright Light and Negative Air Ionization for Treatment of ... flow rate negative air ionization with bright light therapy found that post-treatment improvement results were 57.1% for bright ... An older RCT conducted by the same authors also found air ionization effective for SAD at 2.7x106 ions/cm3. A 2007 review ...

*Didier Sornette

Those in turn induce local geoelectric and geomagnetic anomalies, stimulated infrared emission, air ionization, increase levels ... VLF detection of air ionization 9. Mesospheric lightning 10. Lineaments in the VIS-NIR; Ground Station Component: 1. Magnetic ... Air ionization at the ground surface 9. Sub-ionospheric VLF/ELF propagation 10. Nightglow These precursory signals are ...

*WiTricity

This differs from other methods like simple induction, microwaves, or air ionization. The system consists of transmitters and ...

*Airborne disease

Mitchell, Bailey W.; King, Daniel J. (October-December 1994). "Effect of Negative Air Ionization on Airborne Transmission of ... Air pollution plays a significant role in airborne diseases which is linked to asthma. Pollutants are said to influence lung ... Because of the changes in host immunity and how much the host was exposed to the particles in the air makes a difference to how ... Model 400 Air Purifier" (PDF). Retrieved 4 May 2007. Glass RJ, Glass LM, Beyeler WE, Min HJ. Targeted Social Distancing Designs ...

*Earthing therapy

Negative air ionization therapy Antistatic device Kroschel, Steve (Director) (August 8, 2014). Heal For Free (Motion picture). ...

*Michael Terman

Terman, M.; Terman, J. S. (2006). "Controlled Trial of Naturalistic Dawn Simulation and Negative Air Ionization for Seasonal ... Negative ions (in nature or from electronic air purifiers) had long been presumed to have a nonspecific positive effect on ... Serendipitously, the lab discovered that a nonvisual environmental factor, negative air ion concentration, also has an ... placebo-controlled trial of bright light and high-density negative air ions for treatment of Seasonal Affective Disorder". ...

*Seasonal affective disorder

Negative air ionization, which involves releasing charged particles into the sleep environment, has been found effective with a ... When compared in a study to negative air ionization, bright light was shown to be 57% effective vs. dawn simulation 50%. ... Terman, M.; Terman, J.; Ross, D. (1998). "A Controlled Trial of Timed Bright Light and Negative Air Ionization for Treatment of ... Terman, M.; Terman, J. S. (2006). "Controlled Trial of Naturalistic Dawn Simulation and Negative Air Ionization for Seasonal ...

*Dawn simulation

Terman M, Terman JS (December 2006). "Controlled trial of naturalistic dawn simulation and negative air ionization for seasonal ...

*Wrockwardine

This was covered by means of an ionisation air purifier. This method is widely used in Europe, but this is believed to be the ...

*Alexander Chizhevsky

... "aero-ionization" (study of effect of ionization of air on biological entities). He also was noted for his work in "cosmo- ... similar to negative air ionization therapy) into some medical establishments. He became a scientific consultant and ran an aero ... laying down basics of air-ionization. The center features exhibits, photographs and films, lectures and tours. Alexander ... In 1931 he set up the Central Research Laboratory for Ionisation in USSR. His work in aero-ionification was supported by the ...

*Leonidas D. Marinelli

Clark, R. K., Brar, S. S., & Marinelli, L. D. (1955). Ionization of air by beta rays from point sources. Radiology, 64(1), 94. ... Failla, G., & Marinelli, L. D. (1937). The measurement of the ionization produced in air by gamma rays. Am. J. Roentgenol. ... His studies of physics dealt now with electron diffusion from point sources in air and with the cosmic ray background. In ...

*Water ionizer

Water portal Alkaline diet Electrodeionization Magnetic water treatment Negative air ionization therapy Self-ionization of ...

*Vostok Station

The lack of oxygen in the air because of its high elevation at 3,488 metres (11,444 feet). A higher ionization of the air. A ... Budretsky, A.B. (1984). "New absolute minimum of air temperature". Bulletin of the Soviet Antarctic Expedition (in Russian). ... An almost complete lack of moisture in the air. An average windspeed of 5 metres per second (11 mph; 18 km/h), sometimes rising ... Leningrad: Gidrometeoizdat (105). Budretsky, A.B. (1984). "New absolute minimum of air temperature (English Version)". Bulletin ...

*Ionizing radiation

e.g., ozone cracking of polymers by ozone formed by ionization of air). Ionizing radiation can disrupt crystal lattices in ... High-intensity ionizing radiation in air can produce a visible ionized air glow of telltale bluish-purplish color. The glow can ... The bulk of the ionization effects are due to secondary ionizations. An example of indirectly ionizing radiation is neutron ... and the ionization energy of hydrogen, both about 14 eV. In some Environmental Protection Agency references, the ionization of ...

*Ion therapy

... may refer to: Negative air ionization therapy, the use of air ionisers as an experimental non-pharmaceutical ...

*Lunar effect

... negative air ionization therapy has no statistically significant benefits beyond placebo. Moreover, such treatments require ... Not only is the increase in frequency extremely slight (much smaller than that caused by air conditioning and air pollution), ... placebo-controlled trial of bright light and high-density negative air ions for treatment of Seasonal Affective Disorder". ... ionization many orders of magnitude greater than any differences produced by the lunar cycle, and there are superior effects ...

*Radiation exposure

... is a measure of the ionization of air due to ionizing radiation from photons; that is, gamma rays and X-rays ... It is defined as the electric charge freed by such radiation in a specified volume of air divided by the mass of that air. The ... For instance, for an exposure of 1 roentgen by gamma rays with an energy of 1 MeV, the dose in air will be 0.877 rad, the dose ...

*Electrosurgery

Ionization of an air gap requires voltage in the kV range. Besides the thermal effects in tissue, electric field can produce ... In fulguration mode, the electrode is held away from the tissue, so that when the air gap between the electrode and the tissue ... Electrosurgical desiccation occurs when the electrode touches the tissue open to air, and the amount of generated heat is lower ...

*1912 in science

Victor Hess discovers that the ionization of air increases with altitude, indicating the existence of cosmic radiation. Carl ...

*Ionized jewelry

List of topics characterized as pseudoscience Quackery Negative air ionization therapy Power Balance Hologram bracelet Magnet ... "ionization process" which, he asserts, affects the bracelets in undisclosed ways. These claims were the topic of a 2003 ...

*Integratron

... resulting in the generation of plasma in the form of a coronal discharge and negative air ionization inside the building. The ...

*Biofield

Energy field disturbance Ionized jewelry Magnet therapy Negative air ionization therapy Electrophysiology - Scientific study of ...

*Ronald Karel

Friedemann Freund has also provided laboratories evidences that massive air ionization at the ground-to-air interface may be ... "The Guardian". Earthquake warning in the air?. "Terrible News: An Earthquake 32 Times More Powerful Might Be Coming". India ...

*List of therapies

... music therapy negative air ionization therapy neoadjuvant therapy neurologic music therapy neutron capture therapy of cancer ...

*Moon landing

The first, a mission managed by the United States Air Force, exploded during launch; all subsequent Pioneer lunar flights had ... an ionization chamber to measure radiation in space, a diaphragm/microphone assembly to detect micrometeorites, a magnetometer ... a cosmic-ray integrating ionization chamber, cosmic dust detectors, and scintillation counters. The goal was to place these ...

*Radio receiver

De Forest believed that ionization of residual air was key to Audion operation. This made it a more sensitive detector but also ... This was done by an adjustable air core transformer called a variometer (variocoupler). Regenerative detectors were sometimes ... for air navigation. Wild animal tracking receiver - a receiver with a directional antenna used to track wild animals which have ... Radio waves from many transmitters pass through the air simultaneously without interfering with each other. These can be ...
We investigated this study to generate a patient related verification procedure for Rapid Arc treatment plans.. Before we started to generate the verification protocol we investigated measurements to analyse the potential of the MatriXX for unblocked photon arc fields. The MatriXX response showed good agreements between calculated and measured dose distribution for field sizes of 7 cm × 7 cm and 24 cm × 24 cm with a passing rate between 99% and 100%. Higher aberrations were found for smaller field sizes than 7 cm × 7 cm and for larger field sizes than 24 cm × 24 cm. During Rapid Arc verification measurement we measured the whole dose distribution which consists of 177 control points (177 beam directions with different MLC shapes and gantry speeds between each beam direction). 2/177 beams irradiated perpendicular through the MatriXX. In addition a range of control points irradiated near lateral through the MatriXX. The advantage of the MatriXX is cylindrical parallel plate chambers. Our ...
Parents of kids with allergies should use environmental control measures to reduce their childs exposure to allergy triggers. Some are easy to do, but others can be costly or fairly time-consuming.. Talk with your doctor or health care provider about starting with environmental control measures that will limit the allergens and irritants causing immediate problems.. Because allergies develop over time with continued exposure to allergens, the doctor also may suggest taking precautions now so your child doesnt develop new allergies. For example, dust mites might not be a trigger, but could become one with continued exposure - so controlling them now could help prevent them from becoming an allergy trigger.. Here are suggested environmental control measures for different allergens and irritants:. ...
Wu CF, Lai CH, Chu HJ, Lin WH. Evaluating and mapping of spatial air ion quality patterns in a residential garden using a geostatistic method. Int J Environ Res Public Health. 2011 06; 8(6):2304-19 ...
Cecil replies: Maybe its just me, but when I hear somebody go on about revolutionary discoveries, negative high energy, or anything to do with ions (which are what a corona discharge device produces), I make sure Ive got a firm grip on my wallet. Still, one never likes to dismiss things out of hand. We even tested laundry balls, remember? So I sent Jane to rummage through the archives. The assembled research presents the usual inconclusive muddle. Some observations: Air ionization is to todays scientists what magnetism was to medical types in the 19th century. In other words, a possible cure for just about anything. A computer search turned up nearly 400 scientific articles on air ionization, claiming that negative ions do everything from reduce asthma symptoms to improve your mood and enhance childrens learning ability. Yet the methodology of these studies is sometimes suspect. For example, a couple papers claim that daily sessions with a high-output negative ionizer will alleviate seasonal ...
An integrated numerical simulation tool that couples the Reynolds averaged Navier-Stokes (RANS) or the large eddy simulation (LES) solver for incompressible flows with the dielectric barrier discharge (DBD) electro-hydrodynamic (EHD) body force model has been developed. The EHD body force model is based on solving the electrostatic equations for the electric potential due to applied voltage and the net charge density due to ionized air. The boundary condition for the charge density on the dielectric surface is obtained from a Space-Time Lumped-Element (STLE) circuit model that accounts for the time and space dependence of air ionization on the input voltage amplitude, frequency, electrode geometry, and dielectric properties. The development of the numerical simulation tool is based on the framework of NavyFOAM using a multi-domain approach. The electric potential equation, the net charge density equation, and the flow equations are solved in separate computational domains. All equations are ...
Families of kids with allergies should use environmental control measures that reduce exposure to the childs allergy triggers. Heres how to begin.
The study shows that krypton-85 from nuclear fission enhances air ionization and, thus, interferes with the atmospheric-electrical system and the water balance of the earth atmosphere. This is reason for concern: There are unforeseeable effects for weather and climate if the krypton-85 content of the earth atmosphere continues to rise. There may be a krypton-specific greenhouse effect and a collapse of the natural atmospheric-electrical field. In addition, human well-being may be expected to be impaired as a result of the diminished atmospheric-electrical field. There is also the risk of radiochemical actions and effects caused-by krypton-85-containing plumes in other air-borne pollutants like the latters transformation to aggressive oxidants. This implies radiation smog and more acid rain in the countries exposed. This study summarizes findings gained in these issues by various sciences, analyses them and elaborates hypotheses on the actions and effects of krypton-85 on the air, the atmosphere ...
Consumer Reports, a non-profit US-based product-testing magazine, reported in October 2003 that air ionisers do not perform to high enough standards compared to conventional HEPA filters. The exception was a combination unit that used a fan to move air while ionizing it. In response to this report, The Sharper Image, a manufacturer of air ionisers (among other products), sued Consumers Union (the publishers of Consumer Reports) for product defamation. Consumer Reports gave the Ionic Breeze and other popular units a "fail" because they have a low Clean Air Delivery Rate (CADR). CADR measures the amount of filtered air circulated during a short period of time, and was originally designed to rate media-based air cleaners. The Sharper Image claimed that this test was a poor way to rate the Ionic Breeze, since it does not take into account other features, such as 24-hour-a-day continuous cleaning, ease of maintenance, and silent operation. The United States District Court for the Northern District ...
An appliance is provided for installation within the mouth of an individual to prevent obstruction of the natural airway of the individual and to enhance natural ventilation during sleep. The appliance is hollow and constructed of material which is custom-molded to the user. An external negative air supply is provided which connects to a tube extending from the appliance and draws air from the hollow appliance creating a partial vacuum in the users retroglossal area urging the users tongue and soft palate away from the users posterior pharyngeal wall and thereby opening an airway to the users nasal cavity. A sensor provides control information to the negative air supply by sensing relative pressure in the users oral cavity. The natural breathing cycle is thus facilitated but not controlled by the appliance.
An appliance is provided for installation within the mouth of an individual to prevent obstruction of the natural airway of the individual and to enhance natural ventilation during sleep. The appliance is hollow and constructed of material which is custom-molded to the user. An external negative air supply is provided which connects to a tube extending from the appliance and draws air from the hollow appliance creating a partial vacuum in the users retroglossal area urging the users tongue and soft palate away from the users posterior pharyngeal wall and thereby opening an airway to the users nasal cavity. A sensor provides control information to the negative air supply by sensing relative pressure in the users oral cavity. The natural breathing cycle is thus facilitated but not controlled by the appliance.
Advances in Maldi and Laser-Induced Soft Ionization Mass Spectrometry by Rainer Cramer (Editor) starting at $148.56. Advances in Maldi and Laser-Induced Soft Ionization Mass Spectrometry has 1 available editions to buy at Alibris
Surfaces of hydrophobic polymers are treated to reduce their friction resistance characteristics when in contact with an aqueous environment by exposing the surfaces to an oxidation treatment, preferably by use of radio frequency glow discharge. This oxidation is followed by exposure to atmospheric air, until there is a substantial reduction in the air-water contact angle of the surfaces. The reduced friction resistance characteristics are important in aqueous applications where there is movement between the surfaces of two polymeric materials, such as in double slideable catheters and similar medical products. This process also provides lower coefficients of friction for general polymeric products in contact with water and aqueous solutions.
An unsolved problem in surgical implantology is the inadequately sealed junction between transcutaneous implants and surrounding skin or soft tissue. This results in reoccurring or chronic peri-implantary inflammation. The purpose of this study was to develop an in-vitro model enabling the examination of adhesion and proliferation of fibroblasts on surface variations of titanium materials. The surfaces employed in this study were polished, sandblasted, glassblasted, collagen-A and silicon coated titanium platelets. Additionally, half of these platelets had been preprocessed with radio frequency glow discharge treatment (RFGDT). Thus, in total ten surface modifications have been involved. Platelets were deposited in wells of a 96 micro-titre plate. Then these wells were filled with nutritive solution and loaded with 1 x 104 fibroblasts (human fibroblasts). Cultivation period was 12 hours for testing cell adhesion and 72 hours for testing proliferation. After being detached from the titanium ...
An unsolved problem in surgical implantology is the inadequately sealed junction between transcutaneous implants and surrounding skin or soft tissue. This results in reoccurring or chronic peri-implantary inflammation. The purpose of this study was to develop an in-vitro model enabling the examination of adhesion and proliferation of fibroblasts on surface variations of titanium materials. The surfaces employed in this study were polished, sandblasted, glassblasted, collagen-A and silicon coated titanium platelets. Additionally, half of these platelets had been preprocessed with radio frequency glow discharge treatment (RFGDT). Thus, in total ten surface modifications have been involved. Platelets were deposited in wells of a 96 micro-titre plate. Then these wells were filled with nutritive solution and loaded with 1 x 104 fibroblasts (human fibroblasts). Cultivation period was 12 hours for testing cell adhesion and 72 hours for testing proliferation. After being detached from the titanium ...
In the last decade, diverse strategies in surface modification have been applied on implantable biomaterials such as hydroxyapatite (HA) [1], low-density polyethylene (LDPE) [2] and poly(l-lactic-co-glycolic acid) (PLGA) [3] to improve their intended functions in the body. One of the main purposes for surface modification is to enhance or inhibit protein adsorption on the surface of biomaterials. For example, plasma surface-modification (PSM) techniques such as radio frequency glow discharge have been tested to alter the surface functionalities and, therefore modulate protein adsorption [4] and cell adhesion to biomaterials [5]. Higher reproducibility in surface treatment and flexibility to obtain different surface characteristics, such as surface charge [6], energy [7] and chemistry [8] were achieved using PSM.. The interactions between proteins and surface of biomaterials are mainly energetic. In particular, the van der Waals, electrostatic, hydrogen bonding and hydrophobic interactions are ...
Fundamentally not requiring a vacuum chamber, atmospheric pressure glow discharges (APGDs) offer an exciting prospect for a wide range of material processing applications. To characterize their operation and establish their operation range, a radio frequency (rf) APGD is studied experimentally with measurement of discharge voltage, current, dissipated plasma power and plasma impedance. Different from the current understanding that rf APGD are operative only in the abnormal glow mode, we show the presence of two additional modes namely the normal glow mode and the recovery mode. It is shown that all three modes are spatially uniform and possess key characteristics of a glow discharge. So rf APGD have a much wider operation range than previously believed. To provide further insights, we investigate the transition from the abnormal glow mode to the recovery mode. It is established that the cause responsible for the mode transition is sheath breakdown, a phenomenon that is known in low- and ...
H.R. 706. To amend title I of the Patient Protection and Affordable Care Act to require verification for eligibility for enrollment during special enrollment periods in PPACA insurance plans, and for other purposes. In GovTrack.us, a database of bills in the U.S. Congress.
Managing Antibiotic Resistance - Antibiotics or no antibiotics? How to prevent HAIs and the spread of bacterial resistance? Do you need to reinforce your environmental control measures? bioMérieux can help you meet the daily challenges of fighting antibiotic resistance in your workplace.
This is my case http://www.newegg.com/Product/Product.aspx?Item=N82E16811146077 At the moment I have 3 intake fans setup. The locations are side panel, bottom panel,...
Also I see that R3 in its specs has a fan controller, but where is it? Carbide has a fan controller outside just where the power button is, but I cant see such thing anywhere on R3, is it in a box inside the case which you then mount into an optical drive bay or something ...
Two simple instruments and methods for quantitative measurement of air-borne bacteria are described. One is a new type of apparatus named »rotor for solid media« the other is a modification of the bubbler type instrument (Fig. 1-4)...
LOC DEVICE FOR ELECTROCHEMILUMINESCENT DETECTION OF TARGET NUCLEIC ACID SEQUENCES USING HYBRIDIZATION CHAMBER ARRAY AND NEGATIVE CONTROL CHAMBER WITHOUT PROBES - diagram, schematic, and image 75 ...
LOC DEVICE FOR ELECTROCHEMILUMINESCENT DETECTION OF TARGET NUCLEIC ACID SEQUENCES USING HYBRIDIZATION CHAMBER ARRAY AND NEGATIVE CONTROL CHAMBER WITHOUT PROBES - diagram, schematic, and image 24 ...
Do not hold back the day is done loosens tensions now you feel good and then settle. Relax, away from you all the disturbing thoughts of the day, let them go, do not think of anything more because now you can not do anything and the night does not last a moment. What you do youll think tomorrow looking refreshed and rested and Im sure everything will be fine because you are an exceptional person never forget. Now you have to think just relax and rest now is just for you. After a working day to rest merits. Make yourself comfortable take a slow, deep breath and let yourself go. Inspire slowly and exhale even more slowly. Inspire fresh clean air and exhale dark air full of tensions, he stressed. Regenerated through another slow, deep breath. Inspire positive air and exhale negative air hunting out all the tensions of the day, relax let go now Im here too. Take another deep breath and you will soon feel a physical and mental well-being due to a first state of relaxation. Now put attention on the ...
What Are The Affects of Cold Air on Exercising, Muscles and Lung Capacity? Recently, I noticed that when its cold out, I tend to fatigue faster. This got me to thinking, what kind of effect does cold air have on exercise? Does breathing cold air cause you to fatigue faster? If so, why? Curious minds want to know!
Sigma-Aldrich offers abstracts and full-text articles by [Muzaffar Iqbal, Essam Ezzeldin, Khalid A Al-Rashood, Yousif A Asiri, Naser L Rezk].
This allowed one to use a model based on solution of the Boltzmann equation in the two-term approximation in assumption that the EDF depends on the radial coordinate only through its dependence on the total electron energy (including the potential energy in the radial electric field) 14,15 . Our results demonstrate that applicability of such model to CF4 discharge (at low RN) is quite doubtful. 13Torr). The calculations have been made taking into account the non-equilibrium ion diffusion. Figure 7a shows F(v p , v z ) as a tree-dimensional surface, while in Figure. Lett. (1996) (accepted for publication). G. J. Fishman, P. N. Bhat, R. , Science 264, 1313 (1994). A. V. Gurevich, J. A. Valdivia, G. M. Milikh, K. Papadopoulas, Radio Sci. 31, 1541 (1996). R. A. Roussel-Dupreè, R. H. Miller, EOS Trans. AGU 75, 44 (1994). G. M. Milikh, K. Papadopoulas, C. L. Chang, Geophys. Res. Lett. 22, 85 (1995). V. P. Pasko, K. S. Inan, Y. N. Taranenko, T. F. Bell, Geophys. Res. Lett. 22, 2127 (1995) Y. N. ...
Over the last 15 years there has been a great deal of interest in the potential development of spectrochemical sources that come with lower operational overhead than the inductively-coupled plasma (ICP). There are many driving forces for the development of such devices, even with the likely sacrifices in ter Recent HOT articles New Instrumentation in Chemical Analysis In memory of Joe Caruso
Raw data for a paper High-pressure dc glow discharges in hollow diamond cathodes B.S. Truscott, C. Turner and P.W. May, "High-pressure dc glow discharges in hollow diamond ...
There are currently 95 sites in the NAMN - at 59 of these sites, an active diffusion denuder methodology using the CEH DELTA (DEnuder for Long Term Atmospheric sampling) system (where power is available) is used to provide the main spatial and temporal patterns of NH3 across the UK. Aerosol NH4+ is monitored at a subset of DELTA sites. A secondary network of ALPHA (Adapted Low-cost Passive High-Absorption) samplers are employed at a further 49 sites to assess regional and local scale variability in air NH3 concentrations. To provide an ongoing validation of the ALPHA sampler, the method is calibrated against the DELTA method at 12 sites within the network.. ...
Detection of ozone and nitrogen oxides in stratosphere using nanocrystalline sensors array and high altitude balloon flight (HASP 2009) and Balloon and Rocket Atmospheric Sampling and Sensing (BRASS) (Rocksat 2009) Project Support ...
Detection of ozone and nitrogen oxides in stratosphere using nanocrystalline sensors array and high altitude balloon flight (HASP 2009) and Balloon and Rocket Atmospheric Sampling and Sensing (BRASS) (Rocksat 2009) Project Support ...
Using a powerful negative air system, franchisees with this business skillfully remove dust, mold, pollen, bugs, animal dander, fungus, and whatever else may be lurking in residential and commercial ductwork. Between laws requiring clean ducts in commercial establishments and the increasing social awareness of allergens, everyone needs vent cleaning services all the time, so the business is unending.. Were about to settle up when EC asks what theyve got for dessert. After the meatloaf, Pops is looking a little worse for wear, but he claims he could have a bite. Fjallraven Kanken Mini We go for chocolate mousse and apple crisp (both a little steep at $7), which arrive in martini glasses, dolled up and divine. PolitiFact New Cheap china Jerseys YorkTV and MediaWeatherEditorialsLetters to the EditorAdam ZyglisStateFor upcoming generations, "I cant code" is going to be the new "I cant read."Were all starting to understand the importance of science, technology, engineering and math education. ...
Article Hydrocarbon contaminated soil remediation - Fife. Removal of Contaminated Soils from Residential Gardens & Re-LandscapeCient: Local Authority, Central Belt of ScotlandConsultant: RPS Plc.Challenge: Remove contaminated material from the ga...
A method and apparatus for remediating a failing wastewater treatment system comprising a positive air, oxygen, ozone, or combination thereof, generating pressure pump (40) directing the air, oxygen, ozone or combination through a tube (50) to an air stone (60) suspended in the effluent. Attached growth bacteria grow on a plurality or random directional brushes (116) in an effluent tank, e.g., septic tank (14).
The management of OA consists of limiting the workers exposure to the offending agent to amounts that will not induce disease. A number of approaches can be taken. For example, the worker can be moved to another location within the workplace where little or no offending agent is present. Other techniques include using effective equipment to remove dust and vapor exposure and improving workplace ventilation so that frequent air exchange limits agent accumulation. Evaluation of the workplace should be conducted by a trained industrial hygienist who can measure the degree of agent exposure. It is important to remember that levels of exposure below the legal limits are based on toxicity studies and, therefore, the presence of even tiny amounts of sensitizing agents may still cause immunologic reactions. Face masks of the filtering type are not especially efficient or well-tolerated. In contrast, a compressor with a HEPA filter creating a positive air flow through a mask or head piece can markedly ...
The management of OA consists of limiting the workers exposure to the offending agent to amounts that will not induce disease. A number of approaches can be taken. For example, the worker can be moved to another location within the workplace where little or no offending agent is present. Other techniques include using effective equipment to remove dust and vapor exposure and improving workplace ventilation so that frequent air exchange limits agent accumulation. Evaluation of the workplace should be conducted by a trained industrial hygienist who can measure the degree of agent exposure. It is important to remember that levels of exposure below the legal limits are based on toxicity studies and, therefore, the presence of even tiny amounts of sensitizing agents may still cause immunologic reactions. Face masks of the filtering type are not especially efficient or well-tolerated. In contrast, a compressor with a HEPA filter creating a positive air flow through a mask or head piece can markedly ...
Article Cleaner European air. Since measurements began in 1973, there has been a substantial reduction in sulphur emissions to air in Western Europe. 2005 sees the lowest emissions recorded. This is clearly reflected in the measurements of sulphur co...
With The Return of the King just around the corner the LOTR castmembers are once again all over the small screen doing interviews on chatshows and entertainment news shows all over the dial. Here is a rundown on who, what, where and when you can catch them all. December 1st:. Viggo Mortensen is set to be interviewed in a segment on Entertainment Tonight. ET airs at different times all across North America, check your local listings. [ETonline.com]. December 3rd:. Elijah Wood is scheduled to be a special guest on The Tonight Show with Jay Leno. The Tonight Show airs on NBC at 11:35PM ET. [NBC.com]. December 4th:. PrimeTime Thursday on ABC will air a Making of ROTK special at 10:00 PM on ABC. [More]. December 5th:. Orlando Bloom is scheduled to be a special guest on The Tonight Show with Jay Leno. The Tonight Show airs on NBC at 11:35PM ET. [NBC.com]. December 6th:. Elijah Wood will be one of the guest stars in the Germanys most popular saturday evening show "Wetten dass…". [More]. December ...
now not all that long ago, to miss free air on an x-ray even as a student was a mistake that would fail you. these days you can easily get through medical school without worrying about trivialities like free air on x-rays. also, to have perforated bowel causes intense almost unbearable pain. even a street sweeper would be able to pick this up in the patient. yet the doctor at the referring hospital did not miss this easy clinical diagnosis only on one day or two days or three days, but on four days. that is if he even ever examined the patient. then fortunately a weekend turned up and the patient was referred, well on his way to the great hereafter ...
now not all that long ago, to miss free air on an x-ray even as a student was a mistake that would fail you. these days you can easily get through medical school without worrying about trivialities like free air on x-rays. also, to have perforated bowel causes intense almost unbearable pain. even a street sweeper would be able to pick this up in the patient. yet the doctor at the referring hospital did not miss this easy clinical diagnosis only on one day or two days or three days, but on four days. that is if he even ever examined the patient. then fortunately a weekend turned up and the patient was referred, well on his way to the great hereafter ...
SOCR Activity: The SOCR Ball and Urn Experiment provides a hands-on demonstration of the utilization of Hypergeometric distribution in practice. This activity consists of selecting n balls at random from an urn with N balls, R of which are red and the other N - R green. The number of red balls Y in the sample is recorded on each update. The distribution and moments of Y are shown in blue in the distribution graph and are recorded in the distribution table. On each update, the empirical density and moments of Y are shown in red in the distribution graph and are recorded in the distribution table. Either of two sampling models can be selected with the list box: with replacement and without replacement. The parameters N, R, and n can be varied with scroll bars ...
SOCR Activity: The SOCR Ball and Urn Experiment provides a hands-on demonstration of the utilization of Hypergeometric distribution in practice. This activity consists of selecting n balls at random from an urn with N balls, R of which are red and the other N - R green. The number of red balls Y in the sample is recorded on each update. The distribution and moments of Y are shown in blue in the distribution graph and are recorded in the distribution table. On each update, the empirical density and moments of Y are shown in red in the distribution graph and are recorded in the distribution table. Either of two sampling models can be selected with the list box: with replacement and without replacement. The parameters N, R, and n can be varied with scroll bars ...
This MassBank Record with Accession RP000211 contains the MS2 mass spectrum of (2S)-2-azaniumylpropanoate. The mass spectrum was acquired on a LC-ESI-QTOF with NEGATIVE ionisation using CID fragmentation with the collision energy 10 at a resolution of null and has the SPLASH splash10-000i-9000000000-8cc23f8c1455fdf68df5.
Glow stick bubbles are soap bubbles mixed with the contents of a glow stick. The glow is produced when the chemical inside the glow stick goes from a high energy state to a low energy state,...
Description: Shrub to 2.5 m high; stem flanges grey, winged. Leaves elliptic, 3.5-4.1 mm long, 1.8-2.1 mm wide, apex obtuse, not keeled, margins entire, oil glands prominent on lower surface, evenly scattered; petiole c. 0.5 mm long. Flowers solitary; peduncle 2.5-6 mm long; pedicel 1-2.5 mm long; bracteoles linear, 1.5-2.5 mm long. Hypanthium rough. Sepals obtuse. Corolla 5-8 mm diam.; petals ± circular, 2.6-3 mm long. Stamens 8-10. Style set into a shallow pit on the ovary summit. Capsule c. 2 mm diam.; seeds D-shaped. ...
Kuro Sumi Glow inks er utrolig sensitive til black light og er laget av de beste materialene. Kuro Sumi Glow serien har noen av de sterkeste Uv blekket tilgjengelig. Kuro Sumi inks er kjent for deres kvalitet og Glow serien er ikke et unntak!
Let me also reveal BiPAP. It stands for Bilevel Optimistic Airway Pressure. Theres two force configurations, an inspiratory Website tension and an expiratory strain. The inspiratory pressure is meant to offer a "press" of air on inspiration that can help ease the function of respiration. The expiratory tension maintains a minimal standard of stress from the lungs. The favourable expiratory stress while in the lungs assists in oxygenation. In CHF (congestive coronary heart failure), the good expiratory tension helps to recruit air spaces (alveoli) by forcing retained fluid again into the bloodstream. This works nicely when applied along side a diuretic to help you individuals excrete the retained fluids. I hope many of this information aids reveal what happened. Im sorry to hear of your respective decline and hope that the data might help relieve several of your issues above your fathers cure. --Matt look at total ...
85x150x28 NACHI 7217 bearing for sale. 7316B Nachi 7316C Nachi 7017 Nachi 7017C Nachi 7217 Nachi 7217B Nachi 7217C Nachi 7317 Nachi 7317B Nachi ; We cooperate with UPS,TNT,FEDEX,EMS,DHL,etc.They guarantee to meet your needs in terms of time and money,even if you need your 7217 bearing tomorrow morning (aka overnight or next day air) on your desk, 2, 3 days or more.Note to .... ...
Money Talks has been in the TV news business for more than 20 years - today our stories air on nearly 100 network affiliates nationwide, as well as on major websites like MSN Money, Yahoo Finance, and ...
a pair of 12 round title bouts in the welterweight division top the card as British titleholder Bradley Skeete defends his belt against Dale vans and the vacant WBO Inter-Continental belt is on the line between Gary Corcoran and Larry Ekundayo. The fights are set to air on BT sport in the United Kingdom, check local listings for start times ...
Gabriela Cowperthwaite explains why she was motivated as a mother to make the film Blackfish, which airs on CNN Thursday, October 24.
I dont need to waste too much air on this. When the same two teams appear in the finals for a staggering four consecutive years, whats the point of a regular season? This has haunted the NBA for…
Many shows expected to generate the most viewers do not air on Thursday, long considered the most important night of prime time TV by many marketers.
*sighs, approaches dead horse, stick in hand* Okay, begin rant: Well, I do a couple of sprawls, a few seconds on a heavy bag. Twice a week. I do MMA. No, you do not fucking do MMA. Me? I throw a few teeps into the air on both sides, then its a few seconds on the pads. I do MT.
Glow Matrix is an advanced skin hydrator that provides scientifically advanced ingredients designed to internally hydrate the skin. It is ideal for individuals who want skin hydration support. Glow Matrix supports skin moisture levels, smoothness and elasticity and also supports against premature aging.
My nighttime skincare routine is all about calming my skin down after a stressful day, giving it ultimate hydration, and making it glow. In this post I share my best all-stars products for ultimate glowing skin that lasts all night and the next day too! |3
Natures Gate Glow Lotion - Natures Gate Glow Lotion provides a light sunless tan while hydrating and softening skin with a cla
Know The Glow® provides awareness for Leukocoria or The Glow, identified with flash photography that can indicate up to 16 different eye diseases.
This Sketchy Giclee Glow pendant light is an illuminating addition to kitchens, seating areas and more. Fixture is 13 1/2" high overall. Shade is 16" wide x 5 1/2" high. Canopy is 6" wide. Includes 10-feet of adjustable cord. Style # T6341-8X685 at Lamps Plus.
Before you buy Guerlain Terracotta Skin Healthy Glow Foundation, check out 5 Influenster reviews. Elizabeth M. said I used this product for a while, but I...
adidas ▶ Womens running shorts made of a lightweight, soft Climalite® fabric for superior moisture management. Reversible for two individual looks. With inner key pocket and reflective details. ▶ Model: sun glow s16 AH9970
Maybe they can do the same thing with cp. Glow in the dark cp would be really neat. Dont let jimscott see this topic, or he will start experiment
This fast-absorbing body lotion transforms dull skin with an instant healthy looking glow. Shop unique moisturisers online at The Body Shop.
Whether youve just received the good news as a first-time mom or are adding to your family again, were here to help you enhance your healthy glow in the coming months. Pregnancy can also come with acne, pregnancy mask, and stretch marks. If youre looking to take a proactive approach to addressing those less flattering skin conditions, consider these helpful tips as you get ready for your little one to arrive.
Shop BECCAs Glow on the Go Highlighter Set at Sephora. This duo of portable luminizers features Opal, BECCAs bestselling shade.
Shop BECCAs Glow on the Go Highlighter Set at Sephora. This duo of portable luminizers features Opal, BECCAs bestselling shade.
Order Golden Glow T174-1A from Jacksonville Florist Inc, your local Jacksonville florist. For fresh and fast flower delivery throughout Jacksonville, FL area.
What you need to know about natural body care. An article about the toxic chemicals used in body care products and natural body care alternatives
This foundation from Giorgio Armani perfects skin without looking at all like makeup-its that lightweight, but packed with pigment.
If you have a confidential comment, question or suggestion please do email me at: kellieATkelliesfoodtoglowDOTcom. Sorry for this odd format, but it allegedly keeps the spambots away! Use the normal @ and . when mailing me. Please note that due to legal reasons I cannot advise on personal medical matters. See my note at the…
After much deliberation, I finally joined Thrive Market! Im addicted, its such a great way for a foodie to find new healthy foods!
The day I went into labour, I had a major burst of energy. I heard about this from so many women (including my own mom) during my pregnancy and sure enough, I got it too. Despite my bump that got
Live cells represent vital model systems for studying organism development and human disease. Functional, molecular and morphologic quantitative fluor
The United States floriculture industry reached a total of $5.6 billion in domestic consumption in 2002 with an additional $111 million in exports. As the industry continues to move towards mechanize ... ...
Skincare at every age is important if youre trying to carry your youthful glow well into your 20s, 30s, 40s, 50s and beyond. What worked in your 20s wont exactly help you in your 30s. For lifelong radiance, its important to
... : Threaded inserts for glow plug thread repair To replace the defective GlühkerzengewindesThreaded inserts as replacement parts ...
Objective: This trial assessed two novel nonpharmaceutical treatments for winter depression - naturalistic dawn simulation and high-density negative a
... ... ... The atmospheric pressure photoionization source PhotoSp... Introduction Polycyclic aromatic hydroc...,The,Analysis,of,Polycyclic,Aromatic,Hydrocarbons,(PAHs),by,LC/MS/MS,Using,,,,,,,,,,,,an,Atmospheric,Pressure,Photoionization,Source,biological,advanced biology technology,biology laboratory technology,biology device technology,latest biology technology
A comparison of electrospray ionization, atmospheric pressure chemical ionization, and atmospheric pressure photoionization for the liquid chromatographytandem mass spectrometric analysis of bisphenols. Application to bisphenols in thermal paper receipts and U.S. currency notes Rapid Communications in Mass Spectrometry , 2017, 31 , 17731778 Henry...
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Atmospheric Pressure Chemical Ionisation (APCI) is an ionisation method used in mass spectrometry utilising gas-phase ion-molecule reactions at atmospheric pressure. Ionisation is effected using a corona discharge. This is a method of soft ionisation, where little fragmentation occurs in the source of the mass spectrometer.. Mass Spec uses APCI for trace analysis - primarily for drugs detection, but can be used for a wide range of other substances.. ...
AbstractVarious studies have focused on understanding how the continuous positive air pressure (CPAP) treatment improves the emotional state of obstructive sleep apnea patients, as well as factors that determine improvement. Yet the results are contradictory. The objective of the present study was t
An RF plasma deposition apparatus for depositing a film of material on substrates positioned in a vertical plane and electrically floating within the glow discharge. For deposition of silicon nitride films, the apparatus is adapted to introduce silane gas in a substantially uniform and laminar flow into a coating cavity containing substrates, a ground screen electrode, and a hot RF electrode, within which a glow discharge is ignited. Elemental nitrogen may be delivered to the coating cavity after being dissociated in a local, separate RF plasma called an atomizer cavity. During coating, elemental nitrogen combines with elemental silicon and deposits silicon nitride upon the substrate surface.
Part I - Fluorinated Compounds A method has been developed for the extraction, concentration, and determination of two unique fluorinated compounds from the sediments of Lake Ontario. These compounds originated from a common industrial landfill, and have been carried to Lake Ontario by the Niagara River. Sediment samples from the Mississauga basin of Lake Ontario have been evaluated for these compounds and a depositional trend was established. The sediments were extracted by accelerated solvent extraction (ASE) and then underwent clean-up, fractionation, solvent exchange, and were concentrated by reduction under nitrogen gas. The concentrated extracts were analyzed by gas chromatography - electron capture negative ionization - mass spectrometry. The depositional profile determined here is reflective of the operation of the landfill and shows that these compounds are still found at concentrations well above background levels. These increased levels have been attributed to physical disturbances of ...
Fast analysis of decabrominated diphenyl ether using low-pressure gas chromatography.electron-capture negative ionization mass spectrometry ...
Electric field distributions and discharge properties of rod-rod contact electrodes were studied under the condition of DBD for the steady generation of atmospheric pressure glow discharge plasma (APGD) in air. We found that under the effect of the initial electrons generated in a nanometer-scale gap, the rod-rod cross-contact electrodes yielded APGD plasma in air. Regarding the rod-rod cross-contact electrodes, increasing the working voltage expanded the strong electric field area of the gas gap so that both discharge area and discharge power increased, and the increase in the number of contact points kept the initial discharge voltage unchanged and caused an increase in the plasma discharge area and discharge power. A mesh-like structure of cross-contact electrodes was designed and used to generate more APGD plasma, suggesting high applicability. ...
Computer simulations of crater profiles in glow discharge optical emission spectrometry: comparison with experiments and investigation of the underlying mechanisms ...
Atmospheric pressure chemical ionization (APCI) is an ionization method used in mass spectrometry which utilizes gas-phase ion-molecule reactions at atmospheric pressure (105 Pa), commonly coupled with high-performance liquid chromatography (HPLC). APCI is a soft ionization method similar to chemical ionization where primary ions are produced on a solvent spray. The main usage of APCI is for polar and relatively less polar thermally stable compounds with molecular weight less than 1500 Da. The application of APCI with HPLC has gained a large popularity in trace analysis detection such as steroids, pesticides and also in pharmacology for drug metabolites. A typical APCI usually consists of three main parts: a nebulizer probe which can be heated to 350-500oC, an ionization region with a corona discharge needle, and an ion-transfer region under intermediate pressure. The analyte in solution is introduced from a direct inlet probe or a liquid chromatography (LC) eluate into a pneumatic nebulizer ...
In 2004, the National Tree Seed Centre started collecting ash seed for genetic conservation.. Natural ash populations have adapted to their environments. Preserving germplasm from a significant number of these populations will facilitate the reintroduction of ash species once adequate environmental control measures for EAB are developed or trees resistant to the insect are bred and introduced. The easiest way to assemble breeding material is to collect seed from native stands. The seed will not transmit EAB to non-infested areas.. When properly handled and stored, ash seed will remain alive for many decades. Seed can be easily distributed to scientists and growers to produce seedlings for EAB research, breeding, genetics projects, other scientific study and future reintroduction efforts.. We encourage organizations as well as the general public to assist us in this effort by locating ash stands and populations and collecting seed to send to us.. To ensure the proper identification, collection ...
Atmospheric pressure photoionization FT-ICR MS provides ultrahigh resolving power and sub-ppm mass error required to identify nickel porphyrin isotopes for unambiguous elemental composition assignment.
The Effect of Radio Frequency Discharge Plasma on Surface Properties and Biocompatibility of Polycaprolactone Matrices written by TPU researchers together with their colleagues from Kemerovo Research Institute for Complex Issues of Cardiovascular Diseases (NII KPSSZ) studies the effect of surface modification of bioresorbable polymer material (polycaprolactone, PCL) with abnormal glow discharge, initiated during radio-frequency magnetron sputtering of a hydroxyapatite target.. TPU scientists analyzed plasma exposure of PCL surface on bone marrow multipotent mesenchymal stromal cells behavior (BM MSCs). It was identified that modification of polymer surface with abnormal glow discharge stimulated adhesion and subsequent proliferation of BM MSCs. This type of plasma modification did not affect cell viability (apoptosis, necrosis). Thus, the surface modification with abnormal glow discharge, initiated during radio-frequency magnetron sputtering of a hydroxyapatite target, appeared to be a promising ...
Method and apparatus for controlling vacuum deposition of a thin film onto a substrate, wherein the vacuum deposition produces a glow discharge. The glow discharge is monitored and light therefrom is converted to an electrical signal which is compared to a preset reference signal and used to optimize thin film properties by controlling deposition parameters such as current between electrodes or the supply of gas to a reactive sputtering apparatus. The overall intensity of the glow discharge, or the intensity of certain wavelengths, or the ratio of certain wavelength intensities may be monitored. The time derivative of the electrical signal may be taken to quicken response to light changes. The method and apparatus of the present invention are particularly applicable to reactive sputtering. As an alternative embodiment in reactive sputtering, cathode voltage may be monitored instead of the light.
Recently, hard X-ray high kinetic energy photoelectron spectroscopy has lead to a break-through due to its non destructive way of investigating the bulk electronic properties of materials. However, due to the relatively new development of this technique there is a lack of information concerning the photoionization cross sections at high energies. Whenever compound materials are investigated or when estimating signal levels and the feasibility of an electron spectroscopy experiment the knowledge of cross sections is essential. In the present work the experimentally determined relative sub-shell photoionization cross sections of shallow levels of nickel metal in the energy range of 2-9 keV will be shown. The data are compared with calculated sub-shell photoionization cross sections.. ...
Definition of free-air ionization chamber in the Legal Dictionary - by Free online English dictionary and encyclopedia. What is free-air ionization chamber? Meaning of free-air ionization chamber as a legal term. What does free-air ionization chamber mean in law?
We report TOFMS investigations on the effects of hydrogen added to a dc GD argon plasma, in detail over the most likely concentration range occurring in analytical work (0-0.10% v/v), together with an overview to 0.8% v/v; typical GD-OES discharge conditions were used. Many previous studies on the effects of hydrogen in analytical GD-MS used much higher hydrogen concentrations. In this paper, we report for the first time the hydrogen effect on relative ion signal intensities of matrices, plasma and added gas, for very low but analytically important hydrogen concentrations. We investigate the behavior of doubly charged argon ions (Ar++), dimer ions (Cu2+, Fe2+, Ti2+, Ar2+) and polyatomic ions (ArH+, CuH+, FeH+, TiH+), which can play important roles in plasma processes. We discuss the probable discharge mechanisms in order to gain a greater understanding of the fundamental processes involved in the ionization of the species observed in this study and their likely effects on analytical results. ...
Raw data for a paper High-pressure dc glow discharges in hollow diamond cathodes B.S. Truscott, C. Turner and P.W. May, "High-pressure dc glow discharges in hollow diamond ...
You may also wish to search for items by Lee, Y. and Lee. 78 matching references were found. Ng, C.Y.; Trevor, J.; Mahan, B.H.; Lee, Y.T., Photoionization study of the Xe2 van der Waals molecule, J. Chem. Phys., 1976, 65, 4327. [all data] Ng, C.Y.; Tiedemann, P.W.; Mahan, B.H.; Lee, Y.T., Photoionization studies of the diatomic heteronuclear rare gas molecules XeKr, XeAr, and KrAr, J. Chem. Phys., 1977, 66, 5737. [all data] Ng, C.Y.; Trevor, D.J.; Mahan, B.H.; Lee, Y.T., Photoionization studies of the Kr2 and Ar2 van der Waals molecules, J. Chem. Phys., 1977, 66, 446. [all data] Ng, C.Y.; Trevor, D.J.; Tiedemann, P.W.; Ceyer, S.T.; Kronebusch, P.L.; Mahan, B.H.; Lee, Y.T., Photoionization of dimeric polyatomic molecules: proton affinities of H2O and HF, J. Chem. Phys., 1977, 67, 4235. [all data] Tiedemann, P.W.; Anderson, S.L.; Ceyer, S.T.; Hirooka, T.; Ng, C.Y.; Mahan, B.H.; Lee, Y.T., Proton affinities of hydrogen halides determined by the molecular beam photoionization method, J. Chem. Phys., ...
A solution containing nonvolatile salts is pumped from a pump to an electrospray nebulization probe in the LC/MS interface, and spouted out from a tip of the probe into an atmospheric pressure environment in a form of fine liquid droplets having charges. The sample ions contained in the droplets are deflected by a deflector and enter into a mass analysis portion through an ion sampling aperture to be mass analyzed. On the other hand, the nonvolatile salts travel straight without being affected by the deflector, and collide against and are collected on a wall of a particle collector. The collected salts are precipitated in a form of crystals. The collected salts are washed away by spraying a particle washing solution from the washing nozzle. The above-described structure can provide an atmospheric pressure ionization mass spectrometer which can prevent effects of nonvolatile salts on the mass analysis without deteriorating the vacuum condition of the mass analysis portion by the preventing action.
Lista di sigle comunemente usate in spettrometria di massa. AE - Appearance energy AMS - Accelerator mass spectrometry (Spettrometria di massa con acceleratore) AP - Appearance potential (Potenziale di apparizione) AP MALDI - Atmospheric pressure matrix-assisted laser desorption/ionization APCI - Atmospheric pressure chemical ionization (Ionizzazione chimica a pressione atmosferica) API - Atmospheric pressure ionization (Ionizzazione a pressione atmosferica) APPI - Atmospheric pressure photoionization (Fotoionizzazione a pressione atmosferica) BP - Base peak BIRD - Blackbody infrared radiative dissociation CA - Collisional activation CAD - Collisionally activated dissociation CE-MS - Capillary electrophoresis-mass spectrometry (Elettroforesi capillare-spettrometria di massa) CEM - Channel electron multiplier CF-FAB - Continuous flow fast atom bombardment (FAB a flusso continuo) CI - Chemical ionization (Ionizzazione chimica) CID - Collision-induced dissociation (Dissociazione indotta da ...
Lee, S. H., Williams, M. V., DuBois, R. N. and Blair, I. A. (2003), Targeted lipidomics using electron capture atmospheric pressure chemical ionization mass spectrometry. Rapid Commun. Mass Spectrom., 17: 2168-2176. doi: 10.1002/rcm.1170 ...
A novel ion/molecule reaction was observed to occur under electrospray ionization (ESI), atmospheric pressure chemical ionization (APCI), and atmospheric pressure photo ionization (APPI) conditions, leading to dimerization of ionized 4-(methyl mercapto)-phenol followed by fast H(center dot) loss. The reaction is particularly favored during ESI, which suggests that this ion/molecule reaction can occur both in the solution inside the ESI-charged droplets and in the gas-phase environment of most other atmospheric pressure ionization techniques. The dimerization reaction is inherent to the electrolytic process during ESI, whereas it is more by ion/molecule chemistry in nature during APCI and APPI. From the tandem mass spectrometry (MS/MS) data, accurate mass measurements, hydrogen/deuterium (H/D) exchange experiments and density functional theory (DFT) calculations, two methyl sulfonium ions appear to be the most likely products of this electrophilic aromatic substitution reaction. The possible ...
The Athabasca oil sands industry, an alternative source of petroleum, uses large quantities of water during processing of the oil sands. In keeping with Canadian environmental policy, the processed water cannot be released to natural waters and is thus retained on-site in large tailings ponds. There is an increasing need for further development of analytical methods for environmental monitoring. The following details the first example of the application of gas chromatography atmospheric pressure chemical ionization Fourier transform ion cyclotron resonance mass spectrometry (GC-APCI-FTICR MS) for the study of environmental samples from the Athabasca region of Canada. APCI offers the advantages of reduced fragmentation compared to other ionization methods and is also more amenable to compounds that are inaccessible by electrospray ionization. The combination of GC with ultrahigh resolution mass spectrometry can improve the characterization of complex mixtures where components cannot be resolved by GC
Purpose: The delivery of volumetric modulated arc therapy (VMAT) is more complex than other conformal radiotherapy techniques. In this work, the authors present the feasibility of performing routine verification of VMAT delivery using a dose matrix measured by a gantry mounted 2D ion chamber array and corresponding dose matrix calculated by an inhouse developed algorithm.Methods: Pinnacle, v9.0, treatment planning system (TPS) was used in this study to generate VMAT plans for a 6 MV photon beam from an Elekta-Synergy linear accelerator. An algorithm was developed and implemented with inhouse computer code to calculate the dose matrix resulting from a VMAT arc in a plane perpendicular to the beam at isocenter. The algorithm was validated using measurement of standard patterns and clinical VMAT plans with a 2D ion chamber array. The clinical VMAT plans were also validated using ArcCHECK measurements. The measured and calculated dose matrices were compared using gamma ({gamma}) analysis with 3%/3 ...
Abrahman, Mohamad Zaki (1981) A study of structure and bonding in polymers produced by glow discharge polymerization with particular refrence to the use of E.S.C.A. Doctoral thesis, Durham University.. Adam, Peter James Hedderwick (1981) The practice of the imitation of Christ with special reference to the theology of Dietrich Bonhoeffer. Doctoral thesis, Durham University.. Al-Aruri, Ahmad D. A. (1981) Kinetic and equilibrium studies of the reactions of some aromatic nitro compounds with metal alkoxides. Doctoral thesis, Durham University.. Al-Kaabi, Sharifa Sultan (1981) Kinetics and mechanism of the denitrosation of a nitrosamine and a trionitrite. Masters thesis, Durham University.. Al-Robai, Ali A. S. (1981) Studies on developmental changes in fine structure and metabolism in flight muscle of Locusta migratoria L. Doctoral thesis, Durham University.. Aldred, Susan Elaine (1981) Kinetics and mechanisms of the formation and reactions of alkyl nitrites. Doctoral thesis, Durham ...
Electrospray ionization (ESI) was performed on a Fourier transform ion cyclotron resonance mass spectrometer for the endgroup and monomer mass determination of three poly(oxyalkylene)s in the mass range of 400-8000 Da. A combined use of the multiple charge states observed with ESI, leads to a threefold increase in accuracy of the endgroup and monomer determination. The improvement is attributed to the increased number of datapoints used for the regression procedure, yielding more accurate results. Endgroup masses are determined with a mass error better than 5 and 75 millimass units for the molecular weight range of 400-4200 and 6200-8000 Da, respectively. A mass error of better than 1 millimass unit was observed for all monomer mass determinations. With ESI, endgroup and monomer masses have been determined for poly(ethylene glycol) oligomers with a mass higher than 8000 Da. This is almost two times higher than observed with matrix-assisted laser desorption/ ionization on the same ...

Air Ionization | Harvard Catalyst Profiles | Harvard CatalystAir Ionization | Harvard Catalyst Profiles | Harvard Catalyst

"Air Ionization" by people in Harvard Catalyst Profiles by year, and whether "Air Ionization" was a major or minor topic of ... "Air Ionization" is a descriptor in the National Library of Medicines controlled vocabulary thesaurus, MeSH (Medical Subject ... Below are the most recent publications written about "Air Ionization" by people in Profiles. ... Below are MeSH descriptors whose meaning is more general than "Air Ionization". ...
more infohttps://connects.catalyst.harvard.edu/Profiles/display/Concept/Air%20Ionization

Negative air ionization therapy - WikipediaNegative air ionization therapy - Wikipedia

Negative air ionization therapy is the use of air ionizers as an experimental non-pharmaceutical treatment for seasonal ... Terman, M.; Terman, J.; Ross, D. (1998). "A Controlled Trial of Timed Bright Light and Negative Air Ionization for Treatment of ... flow rate negative air ionization with bright light therapy found that post-treatment improvement results were 57.1% for bright ... An older RCT conducted by the same authors also found air ionization effective for SAD at 2.7x106 ions/cm3. A 2007 review ...
more infohttps://en.wikipedia.org/wiki/Negative_air_ionization_therapy

The effect of negative air ionization on the thymus glands of laboratory rats | SpringerLinkThe effect of negative air ionization on the thymus glands of laboratory rats | SpringerLink

Continuous negative air ionization, over two generations, was found to result in depletion of thymus mass when compared with ... Continuous negative air ionization, over two generations, was found to result in depletion of thymus mass when compared with ... The effect of negative air ionization on the thymus glands of laboratory rats. ...
more infohttps://link.springer.com/article/10.1007/BF01873188

Air ionization-Effective technology to address odours? - HVAC/R engineering - Eng-TipsAir ionization-Effective technology to address odours? - HVAC/R engineering - Eng-Tips

Air ionization-Effective technology to address odours?. Air ionization-Effective technology to address odours?. MedicineEng ( ... RE: Air ionization-Effective technology to address odours?. itsmoked (Electrical). 25 Feb 18 08:50. Keep in mind;. Quote:. ... RE: Air ionization-Effective technology to address odours?. MedicineEng (Industrial). (OP). 21 Feb 18 14:22. itsmoked:. Thanks ... RE: Air ionization-Effective technology to address odours?. itsmoked (Electrical). 21 Feb 18 09:28. "Ionizer" as compared to " ...
more infohttps://www.eng-tips.com/viewthread.cfm?qid=435719

Free-air ionization chamber legal definition of free-air ionization chamberFree-air ionization chamber legal definition of free-air ionization chamber

What is free-air ionization chamber? Meaning of free-air ionization chamber as a legal term. What does free-air ionization ... Definition of free-air ionization chamber in the Legal Dictionary - by Free online English dictionary and encyclopedia. ... Two of the air-kerma standard chambers used in the comparison are parallel-plate free-air ionization chambers and the third ... The free-air ionization chamber that has been dedicated for the measurement of air-kerma for electronic brachytherapy is the ...
more infohttps://legal-dictionary.thefreedictionary.com/free-air+ionization+chamber

Forced Indoor Air Ionization - Halosense - Salt Therapy at HomeForced Indoor Air Ionization - Halosense - Salt Therapy at Home

Home / Salt Therapy Resources / Forced Indoor Air Ionization. Forced Indoor Air Ionization. Forced Indoor Air Ionization by ... Now, the device uses forced indoor air ionization by salt sublimation and give so much relief in many respiratory conditions. ... The authors concluded that forced ionization of the indoor air represents a natural and efficient treatment for respiratory ... VIENNA, AUSTRIA - June 8, 2001 - Forced ionization of indoor air by salt sublimation may improve respiratory symptoms in cystic ...
more infohttps://www.salinetherapy.com/salt-therapy-resources/forced-indoor-air-ionization/

REDUCTION OF DUST EXPOSURE BY NEGATIVE AIR IONISATION	
	REDUCTION OF DUST EXPOSURE BY NEGATIVE AIR IONISATION

A reduction of dust levels by 13% from negative air... ... The effect of negative air ionisation was studied in three ... A reduction of dust levels by 13% from negative air ionisation was found and the difference was statistically significant. ... The effect of negative air ionisation was studied in three Norwegian poultry confinement buildings with compact cages for ... Respirable dust levels measured in one building declined by 20% during ionisation, but this difference was not statistically ...
more infohttp://www.aaem.pl/REDUCTION-OF-DUST-EXPOSURE-BY-NEGATIVE-AIR-IONISATION,90814,0,2.html

Upper-Room Ultraviolet Light and Negative Air Ionization to Prevent Tuberculosis Transmission  - White Rose Research Online
		Upper-Room Ultraviolet Light and Negative Air Ionization to Prevent Tuberculosis Transmission - White Rose Research Online

... lights and negative air ionization for preventing airborne TB transmission using a guinea pig air-sampling model to measure the ... Conclusions Upper-room UV lights and negative air ionization each prevented most airborne TB transmission detectable by guinea ... 11 more authors) (2009) Upper-Room Ultraviolet Light and Negative Air Ionization to Prevent Tuberculosis Transmission. PLoS ... Upper-Room Ultraviolet Light and Negative Air Ionization to Prevent Tuberculosis Transmission ...
more infohttp://eprints.whiterose.ac.uk/42890/

China Mfresh YL-100E Plug in High Concentrate Ionization Air Purifier - China Air Purifier, Air Cleaner with IonizwerChina Mfresh YL-100E Plug in High Concentrate Ionization Air Purifier - China Air Purifier, Air Cleaner with Ionizwer

Find details about China Air Purifier, Air Cleaner with Ionizwer from Mfresh YL-100E Plug in High Concentrate Ionization Air ... China Mfresh YL-100E Plug in High Concentrate Ionization Air Purifier, ... Negative Ion Air Purifier, HEPA Air Purifier, Car Air Purifier, Air Cleaner, Oxygen Bar, Ozonizer, Anion Air Purifier ... Mfresh YL-100E Plug in High Concentrate Ionization Air Purifier Mfresh YL-100E Plug in High Concentrate Ionization Air Purifier ...
more infohttp://mfresh2015.en.made-in-china.com/product/lobxvanuHKpC/China-Mfresh-YL-100E-Plug-in-High-Concentrate-Ionization-Air-Purifier.html

Portable Gas Detection | PID & Ozone Monitors - Air-Met Scientific | MicroFID II Flame Ionisation Detector - Air-Met ScientificPortable Gas Detection | PID & Ozone Monitors - Air-Met Scientific | MicroFID II Flame Ionisation Detector - Air-Met Scientific

MicroFID II Flame Ionisation Detector Brochure MicroFID II Flame Ionisation Detector Manual ... HOME , PRODUCTS , PORTABLE GAS DETECTION , VOC, ISOCYANATE AND OZONE MONITORS , MICROFID II FLAME IONISATION DETECTOR ... The intrinsically safe, portable MicroFID II Flame Ionization Detector (FID) is designed for HAZMAT detection, confined space ...
more infohttps://www.airmet.com.au/product/microfid-ii-flame-ionisation-detector

Microplasma Ionization of Volatile Organics for Improving Air/Water Monitoring Systems On-Board the International Space Station...Microplasma Ionization of Volatile Organics for Improving Air/Water Monitoring Systems On-Board the International Space Station...

Plasma ionization Microhollow cathode discharge Direct analysis in real-time Ion source miniaturization Air quality monitoring ... Microplasma Ionization of Volatile Organics for Improving Air/Water Monitoring Systems On-Board the International Space Station ... Current in-flight air monitoring systems provide the necessary information to accurately assess air quality in the ... recent advances in direct open air surface sampling/ionization. Chem. Rev. 113, 2269-2308 (2013)CrossRefGoogle Scholar ...
more infohttps://link.springer.com/article/10.1007%2Fs13361-016-1388-y

How Lightning Works | HowStuffWorksHow Lightning Works | HowStuffWorks

The ionization of air or gas creates plasma with conductive properties similar to that of metals. Plasma is the tool nature ... The air may not ionize equally in all directions. Dust or impurities (any object) in the air may cause the air to break down ... By this comparison, we can view the ionization process as burning a path through the air for the lightning to follow, much ... So this ionized air (also known as plasma) is much more conductive than the previous non-ionized air. Incidentally, the ability ...
more infohttps://science.howstuffworks.com/nature/natural-disasters/lightning.htm/printable

Fundamentals of Ionizing Radiation Dosimetry | Medical & Health Physics | Physics & Astronomy | Subjects | WileyFundamentals of Ionizing Radiation Dosimetry | Medical & Health Physics | Physics & Astronomy | Subjects | Wiley

11.2 Free-Air Ionization Chambers 474. 11.3 Primary Cavity Ionization Chambers 481 ... 15.3 Dosimetry Protocols for Kilovoltage X-ray Beams Based on Air-Kerma Standards 638 ... ionization chambers, chemical dosimeters and solid state detectors. Chapters on applications include reference dosimetry for ...
more infohttps://www.wiley.com/en-us/Fundamentals+of+Ionizing+Radiation+Dosimetry-p-9783527409211

Fundamentals of Ionizing Radiation Dosimetry | Medical & Health Physics | Physics & Astronomy | Subjects | WileyFundamentals of Ionizing Radiation Dosimetry | Medical & Health Physics | Physics & Astronomy | Subjects | Wiley

11.2 Free-Air Ionization Chambers 474. 11.3 Primary Cavity Ionization Chambers 481 ... 15.3 Dosimetry Protocols for Kilovoltage X-ray Beams Based on Air-Kerma Standards 638 ... ionization chambers, chemical dosimeters and solid state detectors. Chapters on applications include reference dosimetry for ...
more infohttps://www.wiley.com/en-us/Fundamentals+of+Ionizing+Radiation+Dosimetry-p-9783527808243

Symposium Tutorials » EOS/ESD Association, Inc.Symposium Tutorials » EOS/ESD Association, Inc.

FC120: Air Ionization Issues and Answers for the Program Manager. 8:30 a.m. - 12:00 p.m. Kevin Duncan, Seagate Technologies ... We will explore the benefits of ionization; discuss the different technology types and the pros and cons of each. Examples will ... Other workstation issues will be discussed including: application of ionization, garment grounding, ESD chairs, handling ... This tutorial will explore the fundamental ESD control principles surrounding the use of ionization systems in an ESD control ...
more infohttps://esda.org/events/symposia/symposium-seminars-2/

Therapy - WikipediaTherapy - Wikipedia

negative air ionization therapy. *by moist salt air: *by natural moist salt air: seaside cure (especially common in ... by salts in the air *by natural dry salt air: "taking the cure" in desert locales (especially common in prescientific medicine ... by artificial dry salt air: *low-humidity forms of speleotherapy. * ...
more infohttps://en.wikipedia.org/wiki/Therapy

Therapy - WikipediaTherapy - Wikipedia

negative air ionization therapy. *by moist salt air: *by natural moist salt air: seaside cure (especially common in ... by salts in the air *by natural dry salt air: "taking the cure" in desert locales (especially common in prescientific medicine ... by artificial dry salt air: *low-humidity forms of speleotherapy. * ...
more infohttps://en.wikipedia.org/wiki/Therapeutic

Effectiveness of complementary and self-help treatments  for depression | The Medical Journal of AustraliaEffectiveness of complementary and self-help treatments for depression | The Medical Journal of Australia

Two randomised controlled trials have compared high-density air ionisation (1 × 104 ions/cm3) with low-density air ionisation ( ... Air ionisation. Description: Electrical devices are available to increase the concentration of negative ions in the air. These ... These studies found that high-density air ionisation was more effective than low-density ionisation. No studies have been ... A controlled trial of timed bright light and negative air ionization for treatment of winter depression. Arch Gen Psychiatry ...
more infohttps://www.mja.com.au/journal/2002/176/10/effectiveness-complementary-and-self-help-treatments-depression?0=ip_login_no_cache%3D12ed3c6e9462369977a72dbb31847ec7

Effectiveness of complementary and self-help treatments  for depression | The Medical Journal of AustraliaEffectiveness of complementary and self-help treatments for depression | The Medical Journal of Australia

Two randomised controlled trials have compared high-density air ionisation (1 × 104 ions/cm3) with low-density air ionisation ( ... Air ionisation. Description: Electrical devices are available to increase the concentration of negative ions in the air. These ... These studies found that high-density air ionisation was more effective than low-density ionisation. No studies have been ... A controlled trial of timed bright light and negative air ionization for treatment of winter depression. Arch Gen Psychiatry ...
more infohttps://www.mja.com.au/journal/2002/176/10/effectiveness-complementary-and-self-help-treatments-depression

Characterization of particulate matter and gaseous emissions of a C-130H aircraft | Environmental XPRTCharacterization of particulate matter and gaseous emissions of a C-130H aircraft | Environmental XPRT

On the ionization of air for removal of noxious effluvia" (Air ionization of indoor environments .... Dec. 17, 2015. ... is also is enhanced by air ionization. The process of air ionization... ... AbstractRecent developments in the application of controllable air ionization processes that apply dielectric-barrier discharge ... Sampling and analysis of air pollutants is known as Air quality monitoring and it is major part of environmental monitoring. ...
more infohttps://www.environmental-expert.com/articles/characterization-of-particulate-matter-and-gaseous-emissions-of-a-c-130h-aircraft-29748

Didier Sornette - WikipediaDidier Sornette - Wikipedia

Those in turn induce local geoelectric and geomagnetic anomalies, stimulated infrared emission, air ionization, increase levels ... VLF detection of air ionization 9. Mesospheric lightning 10. Lineaments in the VIS-NIR; Ground Station Component: 1. Magnetic ... Air ionization at the ground surface 9. Sub-ionospheric VLF/ELF propagation 10. Nightglow These precursory signals are ...
more infohttps://en.wikipedia.org/wiki/Didier_Sornette

Geosciences  | Free Full-Text | The Central Italy Electromagnetic Network and the 2009 LAquila Earthquake: Observed Electric...Geosciences | Free Full-Text | The Central Italy Electromagnetic Network and the 2009 L'Aquila Earthquake: Observed Electric...

... charged aerosols in the air could have some links with the observed electric oscillations [61]. Air ionization has been ... Freund, F.T.; Kulahci, I.G.; Cyr, G.; Ling, J.; Winnick, M.; Tregloan-Reed, J.; Freund, M.M. Air ionization at rock surface ... Bleier, T.E.; Dunson, C.; Maniscalco, M.; Bryant, N.; Bambery, R.; Freund, F. Investigation of ULF magnetic pulsations, air ... Characteristic (8) above suggests a further interpretation as electric charging of the air has been frequently reported to ...
more infohttp://www.mdpi.com/2076-3263/1/1/3/htm
  • The next logical step in the design of a combined air/water analyzer is the miniaturization of the plasma ion source itself by using a microplasma system, with the goal of reducing overall instrument size, required gas flow rates, and electrical power consumption. (springer.com)
  • The tubes should not be subjected to temperatures exceeding 140º F. The supply air discharge of most gas and oil-fired furnaces can exceed 140º F, while hot water coils or electrical reheat coils typically don't exceed 110º F. (plasma-air.com)
  • Respirable dust levels measured in one building declined by 20% during ionisation, but this difference was not statistically significant. (aaem.pl)
  • Ambient plasma ionization mass spectrometry (MS) is finding effective use as part of the analytical methodologies being tested for next-generation space module environmental analysis. (springer.com)
  • However, ambient ionization methods employing atmospheric plasmas typically require relatively high operation voltages and power, thus limiting their applicability in combination with fieldable mass spectrometers. (springer.com)
  • I'm pursuing several air quality issues at the same time and you might have seen my other thread on kitchen exhaust systems. (eng-tips.com)
  • Methods and Findings For 535 consecutive days, exhaust air from an HIV-TB ward in Lima, Perú, was passed through three guinea pig air-sampling enclosures each housing approximately 150 guinea pigs, using a 2-d cycle. (whiterose.ac.uk)
  • We're in the middle of some test trials for FCUs in a smoking environment and I do feel a different smell next to the ionizers, but not sure how effective these are in breaking down the smells and actually make the air fresher. (eng-tips.com)
  • Evaluating and mapping of spatial air ion quality patterns in a residential garden using a geostatistic method. (harvard.edu)
  • Current in-flight air monitoring systems provide the necessary information to accurately assess air quality in the International Space Station (ISS), but the information available regarding water quality is still limited. (springer.com)
  • These on-board technologies, however, lack specificity or only focus on a narrow class of analytes, and are not implemented in a fashion that enables simultaneous air and water quality assessment. (springer.com)
  • Eckerskorn C, Strupat K, Karas M, Hillenkamp F, Lottspeich F. Mass spectrometric analysis of blotted proteins after gel electrophoretic separation by matrix-assisted laser desorption/ionization. (harvard.edu)
  • Aitken, An Analysis of the Free-Air Ionization Chamber for Extended Sources of Radiation, Phys. (thefreedictionary.com)
  • The intrinsically safe, portable MicroFID II Flame Ionization Detector (FID) is designed for HAZMAT detection, confined space entry and soil gas monitoring. (airmet.com.au)
  • Observed ground-level white colors appear to result from very intense non-specific air ionization. (scielo.org.co)
  • 5 µm in diameter) can remain suspended in the air for long periods of time with local airflow pathways inside a building determining their fate. (royalsocietypublishing.org)