Hazards methods

It cannot he too strotigly emphasised that in all these reactions violently explosive diazo sulphides and related compounds may be formed, and another less hazardous method for the preparation of the desired compound should be used, if possible. The following reactions are known to lead to dangerous explosions —... 

Depending on the desired application, additional refining may be necessary. For demagging (removal of magnesium from the melt), hazardous substances such as chlorine and hexachloroethane are often used, which may produce dioxins and dibenzofurans. Other, less hazardous methods, such as adding chlorine salts, are available. 

DuyvesteynW S, ShimoniE and LabuzaTP(2001), Determination of the end of shelf life for milk using Weibull Hazard Method , Food Science and Technology, 34, 143-148. 

When peroxide concentrations increase to 20 ppm or greater, the solution is hazardous. Methods for detecting and controlling peroxides are outlined by H. L. Jackson et al.10... 

Rat, R., and Isler, J. (1995) The static electricity hazards method for assessing pyrotechnics sensitivity and approach for hazard reduction. Proc. 26th Inti. Ann. 

The use of trimethylsilyldiazomethane with methanol provides a less hazardous method for preparing methyl esters under mild conditions than ethereal diazomethane solution. Trimethylsilyldiazomethane is commercially available, obviating the need to synthesize diazomethane daily. It is a stable and safe substitute for either hazardous diazomethane or corrosive reagents containing boron trifluoride. 

Recognition of Health Hazards Methods for Measuring and Evaluating Health Hazards Human Systems Industrial Toxicology Physical Hazards... 

Dove, W.E. (1949). Progress of non-hazardous methods of insect control. (Paper read at UNESCO International Technical Conference on Protection of Nature, USA, A ug/Scpl 1949. C N ESCO.) Pynrt h. Post fl 951 >. 2, 9-11. 

An industrial method involves diazotisation in anhydrous HE This hazardous method has advantages for large-scale production, but is not suitable for normal laboratory-scale work ... 

One of the common, but somewhat hazardous, methods of activating agarose is to use cyanogen bromide, CNBr. 

An even more serious form of FH is the homozygous type. Here, no functional LDL receptors are produced. Plasma cholesterol levels can reach over 1,000 mg/dL. Clinical disease arises in the early teens, frequently followed by fatal Mis by age 20 (Goldstein and Brown, 1983). Since cholesterol-lowering drugs to date owe their effectiveness to stimulation of LDL receptors, they have not been very useful here. More drastic but hazardous methods of treatment are being attempted. These may include plasmapheresis of LDL with LDL antibodies and liver transplant that restored LDL receptors to about half normal levels, thereby permitting follow-up drug treatment with lovastatin to maintain normal cholesterol levels. 

Under ORNL s Chemical Safety subject area, employees receive information and training on the hazards of chemicals. They also learn methods for protecting themselves from these hazards, methods for detecting chemical hazardous chemicals, and ways to access information on the proper, use, storage and disposal of hazardous chemicals through the manufacturer s MSDS and other resources. Additional chemical-specific training is conducted in accordance with applicable regulations. 

In spite of the advances recorded in many aspects of stored product p>est control, fumigation being a no residual chemical treatment has remained the mainstay for control of stored product pests. Therefore, it is accepted that fumigation is the most universal and the less hazardous method for maintaining of agricultural products under storage conditions (Keita et al, 2001). 

Reduce risks by substituting less hazardous methods or materials. 

Medical NMR imaging is commonly called magnetic resonance imt i (MRI) to avoid the common fear of the word nuclear and the misconception that nuclear means radioactive. There is nothing radioactive about an NMR spectrometer. In fact, MRI is the least invasive, least hazardous method available for imaging the interior of the body. The only common side effect is claustrophobia from being confined within the ring of the wide-bore magnet. 

One of the most important parameters that can be nsed to characterise a fire is the rate of heat release. It provides an indication of the size of the fire, the rate of fire growth and consequently the release of smoke and toxic gases, the time available for escape or suppression, the type of snppressive action that are likely to be effective and other attributes that define the fire hazard. Methods based on the oxygen consumption principle are now available to measnre the rate of heat release reliably and accurately. The principle depends upon the fact that the heats of combustion of organic materials per unit of oxygen consumed are approximately the same. This is because the processes in the combustion of all these prodncts involve the breaking of C-C and C-H bonds (which release approximately the same amonnt of energy) with the formation of CO2 and water. 

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