Chemical dependency

Uranium. The uranium product from the PUREX process is in the form of uranyl nitrate which must be converted to some other chemical depending on anticipated use. One route to MO fuel is to mix uranium and plutonium nitrates and perform a coprecipitation step. The precipitate is... 

The price of tin chemicals depends to a large extent on the fluctuating price of tin. The 1982 prices and the CAS Registry Numbers for selected inorganic tin compounds and organotins are Hsted ia Table 13. 

Strategies for reducing the risk from a toxic chemical depends upon its nature (i.e. toxic, corrosive, dermatitic) and extent. A combination of the following measures may be appropriate. 

When compounded to form ebonites they show improved chemical resistance especially to carboxylic acids and may be used for some oxidative chemicals depending on type and operating temperatures. Ebonites can be compounded to be suitable for working temperatures up to at least 100°C, but, due to brittleness, are not normally suitable for sub-zero temperatures. 

Prevalence of benzodiazepine use and abuse can be estimated by national and cross-national sutveys of the general population and of populations in medical clinics, psychiatric institutions, and chemical dependency tteatment units. 

Barnhill JG, Ciraulo AM, Ciraulo DA Interactions of importance in chemical dependence, in Drug Interactions in Psychiatry, 1st Edition. Editedhy Ciraulo DA, Shader Rl, Greenhlatt DJ, et al. Baltimore, MD, Williams Wilkins, 1989, pp 234—237... 

Director of Chemical Dependency Services, North Brooklyn Network, Brooklyn, New York... 

It is important to emphasize that often — but not always — the performance of a product with a chemical depends heavily on the manufacturer and a specific product model. A model that performs well with one chemical may perform poorly with another chemical, even when the chemicals are in the same chemical class. This is illustrated by the Edmont Model 37-165 glove which was tested against all five acids. This glove shows good protective properties with hydrochloric, perchloric, and phosphoric acids, but exhibits degradation in nitric and sulfuric acids. 

Toxicity is the outcome of interaction between a chemical and a living organism. The toxicity of any chemical depends on its own properties and on the operation of certain physiological and biochemical processes within the animal or plant that is exposed to it. These processes are the subject of the present chapter. They can operate in different ways and at different rates in different species—the main reasons for the selective toxicity of chemicals between species. On the same grounds, chemicals show selective toxicity (henceforward simply selectivity ) between groups of organisms (e.g., animals versus plants and invertebrates versus vertebrates) and also between sexes, strains, and age groups of the same species. 

The nature of dangerous reactions involving organic chemicals depends on the saturated, unsaturated or aromatic structures of a particular compound. Saturated hydrocarbons are hardly reactive, especially when they are linear. Branched or cyclic hydrocarbons (especially polycyclic condensed ones) are more reactive, in particular as with oxidation reactions. With ethylenic or acetylenic unsaturated compounds, the products are endothermic . 

She also had experimented with LSD and cocaine freebasing numerous times within the past 2 years. Throughout her history of substance abuse she experienced an increasing frequency of periods of dazed consciousness and blackouts multiple times yearly, while under the influence of alcohol. Further, she reported that other family members had chemical dependency problems, though her parents never abused drugs/a1cohol. 

An educational, behavior modification approach should be taken with the patient. Education about chemical dependency is most important. Expected behavioral changes must be clearly conceived and communicated to the patient. Evaluation of vocational status and skill development require attention. 

Kozlowski, L. T., Henningfield, J. E., Keenan, R. M., Lei, H., et al., Patterns of alcohol, cigarette, and caffeine and other drug use in two drug abusing populations. Special Issue Towards a broader view of recovery Integrating nicotine addiction and chemical dependency treatments. Journal of Substance Abuse Treatment, 1993 Mar-Apr Vol 10(2), 171-179, 1993. 

Some of the chemicals that contain lead are broken down by sunlight, air, and water to other forms of lead. Lead compounds in water may combine with different chemicals depending on the acidity and temperature of the water. Lead itself cannot be broken down. 

If cells of eukaryotes are much slower to reproduce and adapt, why did they evolve at all and so successfully Why did they continue to evolve yet their predecessor prokaryotes also evolved (as aerobes) and both they and early and late eukaryotes are also extant in considerable numbers today Clearly a large number of types of organisms, chemotypes, co-exist. Why We shall provide answers to these questions in terms of the different efficiencies of different chemotypes within the ecosystem, including mutual chemical dependences. 

Bioavailability of soil-sorbed organic chemicals depends on a variety of physicochemical factors as well as the characteristics of microorganisms involved. Although many studies have provided insight to our understanding of the bioavailability issue, simple correlations have not been found between bioavailability and physicochemical properties of sorbed chemicals or sorbents, nor microbial characteristics. 

Many chemically dependent clients have difficulties identifying and regulating their emotions, much to their detriment. 

This book is extremely important in my view because it gives a forum to the voices and tells the stories of a new invisible minority who are casualties of our chemical-dependent economic base. Dr. Michael Tax, a specialist in occupational medicine, rightly insists that MCS is a product of industrial capitalism and cannot be understood independently of it. 

I was very disappointed, and we saw each other less often for a while. But the real break came later when she said, I don t want to hear any more about your chemical dependence. I said, Chemical dependence What do you mean It s not chemical dependence, it s just the opposite She said that she didn t want to hear anything more about it, and that we shouldn t see each other for a while. That was the final break. 

The Vision 21 program is focused on new concepts for coal-based energy production where modular plants could be configured to produce a variety of fuels and chemicals depending on market needs with virtually no environmental impact outside the plant s footprint. Membranes would be used to separate oxygen from air for the gasification process and to separate hydrogen and carbon dioxide from coal gas. 

Provide protection against alpha particles and low-energy beta particles resists some chemicals (depends on the type selected) relatively inexpensive Latex gloves tear easily... 

The Mossbauer effect involves the resonance fluorescence of nuclear gamma radiation and can be observed during recoilless emission and absorption of radiation in solids. It can be exploited as a spectroscopic method by observing chemically dependent hyperfine interactions. The recent determination of the nuclear radius term in the isomer shift equation for shows that the isomer shift becomes more positive with increasing s electron density at the nucleus. Detailed studies of the temperature dependence of the recoil-free fraction in and labeled Sn/ show that the characteristic Mossbauer temperatures Om, are different for the two atoms. These results are typical of the kind of chemical information which can be obtained from Mossbauer spectra. 

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