نتایج جستجو برای: dangerous chemicals
تعداد نتایج: 64909 فیلتر نتایج به سال:
The report contrasts the ascertainment of cases by the regional cancer registry with a specially designed search for records and pathology material which was then submitted to critical review irrespective of the original diagnosis. Boundary changes over the intervening years were accounted for and the results contrasted between time periods and with the cancer registry records. A large proporti...
Why do some elections spark violence whilst others do not? That is a question that has gained increased interest from scholars during the last few years. However, because of the field’s relative novelty, and despite the vast literature on democratization and civil war, it is still a question that is not fully comprehended. In this thesis, a theory claiming that clientelism should increase the r...
Vespid wasps are ecologically beneficial, but they can be a nuisance and dangerous to people due to their tendency to sting. Here, the aim was to screen samples of volatiles (i.e., essential oils and pure chemicals) for their repellency against wasps. The number of wasps (mainly Vespula vulgaris) present in a glass box with attractant and 5 µL sample was compared to the number of wasps in a sim...
Hardly any other artificially made medicine has ever had such a dangerous and unexpected potential as thalidomide. The medicine, which started its life as a harmless sleep-inducing substance, caused neurological and teratogenic damage, and, at the moment is a promising candidate for the fight against leprosy, cancer, and AIDS. The present study focuses on the early German history. It takes the ...
Because they cause burns that are difficult to heal, acids are dangerous, and steps should be taken to ensure that the human skin does not come into contact with them. For this purpose safety gloves are generally used by workers who have to handle acids. Such gloves need to be tested to ensure that they are acid resistant. Standard EN 374 (European Committee for Standardization [CEN], 1993c) sp...
We have developed a simple colorimetric sensor array that detects a wide range of volatile analytes and then applied it to the detection of toxic gases. The sensor consists of a disposable array of cross-responsive nanoporous pigments with colours that are changed by diverse chemical interactions with analytes. Although no single chemically responsive pigment is specific for any one analyte, th...
We have developed a simple colorimetric sensor array that detects a wide range of volatile analytes and then applied it to the detection of toxic gases. The sensor consists of a disposable array of cross-responsive nanoporous pigments with colours that are changed by diverse chemical interactions with analytes. Although no single chemically responsive pigment is specific for any one analyte, th...
Decontamination, i.e. cleaning by removal of chemicals or germs, is a term commonly used for the process of treating devices, instruments and surfaces in order to ensure their safe operation. It is of exceptional importance in healthcare, food and pharmaceutical industry as well as in the areas of army and public defense. The decontamination process covers several steps like simple washing with...
The food industry is a business of mass production and consumption. Plants and animals that are grown in bulk in farmlands nationwide are processed later at large factories. It is no surprise that some of the most popular snack foods have a lengthy list of ingredients. The various chemicals found in food serve to enhance the color, texture, flavor, and shelf life. There are hundreds of food add...
Dangerous organophosphorus (OP) compounds have been used as insecticides in agriculture and in chemical warfare. Because exposure to OP could create a danger for humans in the future, butyrylcholinesterase (BChE) has been developed for prophylaxis to these chemicals. Because it is impractical to obtain sufficient quantities of plasma BChE to treat humans exposed to OP agents, the production of ...
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