Chemical agent

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  • January 2012 saw the completion of the U.S. Army’s Chemical Materials Agency’s (CMA’s) task to destroy 90 percent of the nation’s stockpile of chemical weapons. CMA completed destruction of the chemical agents and associated munitions stored at six of eight continental U.S. storage facilities as well as chemical weapons deployed overseas, which were transported to Johnston Atoll, southwest of Hawaii, and demilitarized there. The remaining 10 percent of the nation’s chemical weapons stockpile is stored at two remaining continental U.S.

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  • The terms “cosmetic tattooing” or “permanent makeup” (e.g. micropigmentation) refer to mechanical application of pigmented materials to the area of the eye, lips and face for the purpose of changing the color or appearance of that facial feature. This is a rapidly growing business in the United States becoming mainstream in many sociological circles.

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  • This dictionary provides a convenient personal reference source, intended to complement more encyclopaedic works. First, there is an alphabetic, fully cross-indexed listing of pharmacologically active agents and their properties, containing details of some 4000 individual chemical agents including medical drugs in current use, experimental agents and toxins used as investigation tools. Over 10,000 alternative names are indexed, including chemical names, abbreviated chemical names, official pharmacological names, proprietary names and research code numbers....

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  • A notable achievement by the U.S. Army as of early 2012 is that 90 percent of the legacy chemical weapons and other chemical warfare materiel (CWM) from the Second World War and cold war eras and then stockpiled by the United States have been safely destroyed. 1 Whatever cumulative risk had been posed by the existence of this CWM to communi-ties surrounding the six military sites where it was guarded and safely maintained since the mid-twentieth century is now zero.

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  • Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Critical Care giúp cho các bạn có thêm kiến thức về ngành y học đề tài: The problem of secondary contamination following chemical agent release...

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  • Primary chemically formed lead dioxide (PbO2 ) was used as positive electrode in preparation of lead–acid bipolar batteries. Chemical oxidation was carried out by both mixing and dipping methods using an optimized amount of ammonium persulfate as a suitable oxidizing agent. Xray diffraction studies showed that the weight ratio of -PbO2 to -PbO2 is more for mixing method before electrochemical forming.

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  • Bacteria are non-chlorophyllated unicellular organisms that reproduce by fission and do not present nuclear envelope. Gram´s stain is a staining technique used to classify bacteria based on the different characteristic of their cell walls. Gram-positive or Gram-negative bacteria are determined by the amount and location of peptidoglycan in the cell wall, exhibiting different chemical compositions and structures, cell-wall permeabilities, physiologies, metabolisms, and pathogenicities.

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  • The United States has been in the process of destroying its chemical munitions for well over a decade. Initially, the U.S. Army, guided by recommendations from the National Research Council (NRC), decided to use incineration as its destruction method at all sites. However, citizens in some states with stockpile storage sites oppose incineration on the grounds that the exact nature of the effluents escaping from the stacks cannot be determined.

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  • The Committee to Review Assembled Chemical Weapons Alternatives Program Detonation Technologies was appointed by the National Research Council (NRC) in response to a request by the U.S. Army’s Program Manager for Assembled Chemical Weapons Alternatives (PMACWA). Three types of detonation technologies available from technology vendors and the Army’s explosive destruction system (EDS), collectively known as explosive destruction technologies (EDTs), are being considered for use at the Blue Grass Army Depot in Richmond, Kentucky, and the Pueblo Chemical Depot in Pueblo, Colorado....

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  • Sulfoquinovosylacylglycerols (SQAGs), in particular compounds with C18 fatty acid(s) on the glycerol moiety, may be clinically promising antitumor and⁄or immunosuppressive agents. They were found originally as inhibitors of mammalian DNA polymerases. However, SQAGs can arrest cultured mammalian cells not only at S phase but also at M phase, suggesting they have several molecular targets.

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  • Medicinal chemistry is a discipline at the intersection of chemistry, especially synthetic organic chemistry, and pharmacology and various other biological specialties, where they are involved with design, chemical synthesis and development for market of pharmaceutical agents (drugs). Compounds used in medical applications are most often organic compounds, which are often divided into the broad classes of small organic molecules and biologics, the latter of which are most often medicinal preparations of proteins. Inorganic and organometallic compounds are also useful as drugs.

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  • The field of toxicology has grown enormously since Industrial Toxicology: Safety and Health Applications in the Workplace was first published in 1985. And while the original edition was hugely popular among occupational health professionals, the time is ripe to address toxic agents not only in the industrial setting but also in the environment at large.

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  • Introduction: The chemical warfare agents well known count only about 30 kinds of compounds, such as sarin, soman, tabun, VX, mustard gas, lewisite and others. When unknown toxic substances should be analyzed upon the occurrence of chemical terrorism, much more kinds of poisons and related compounds become the objects of analysis. In the Chemical Weapons Convention (CWC)a, 120 thousand compoundsb, including typical chemical warfare agents, their related compounds, precursors and decomposition products, are being listed to be controlled.

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  • Honey bees (Apis mellifera L.) are the main pollinating agents for numerous plants and fruit trees and, hence, play a key role in agriculture and more generally in the maintenance of ecological biodiversity. Although these social insects are not the targets of all the different agrochemical treatments used in crop protection, they are widely affected by pesticides.

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  • Emergency responders are trained primarily to respond to fires or hazardous materials accidents. However, with the increase of terrorism in the United States, it is increasingly important that emergency response teams are trained to handle incidents involving biological, chemical, and nuclear agents. Utilizing recent case studies and interviews, this book presents a framework for emergency response to terrorist and criminal acts.

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  • THERE IS probably no single course in “laboratory safety or chemical safety” at your college or university. Why not? Chemistry curricula have developed over many decades with a focus on the main topics of chemistry: organic, inorganic, physical chemistry, analytical chemistry, and (more recently) biochemistry. For decades, the topic of chemical safety was included at the margins of lab courses, mostly taught in a small way as a footnote to various lab experiments and procedures. Some chemists and chemistry teachers were aware of the importance of safety, while many were not.

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  • The theory of neurohumoral transmission received direct experimental validation nearly a century ago (see von Euler , 1981 ), and extensive investigation during the ensuing years led to its general acceptance. Nerves transmit information across most synapses and neuroeffector junctions by means of specific chemical agents known as neurohumoral transmitters or, more simply, neurotransmitters.

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  • Oxidation/Reduction Reactions Reactions in which electrons are transferred from one reactant to another. Example I-1 Cu2+ + Zn (s) Cu (s) + Zn2+ Cu2+ has undergone reduction and is reduced. Oxidizing reagent: Cu2+. Reducing agent: Zn. Zn has undergone oxidation and is oxidized. .

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  • Chemical Tooling Aids are offered as a comprehensive range of reliable agents, specifically developed for the requirements of the toolmaking trade, and closely integrated with other FIBRO products. Quite categorically the FIBROLIT® bonding technique relies on first principles only for the attainment of absolute alignment accuracy.

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  • Chemicals are able to bring about both desirable and undesirable effects on organisms to which they are exposed, and the actions of medicines and poisons and toxic agents have been recognized for thousands of years. As a result of industrialization, modern man and the environment is now exposed to increasing numbers of chemicals. Because of their potential hazard, there is an appreciation of the requirement to assess the effects of these chemicals. Since chemical structure was elucidated (for a very brief history see Table 1.

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