Nowadays, there are a lot of researches about the effects endocrine disruptors on human and wildlife organisms. Endocrine exogenous substances or substance mixtures that cause undesired in organism future generations by altering system exposed organism. Fish to several ways including water, sediment, diet. The toxic fish vary according exposure period, duration exposure, chemical properties sub...

The illicit usage of toxic substances is increasing rapidly around the world, creating a need for comprehensive chemical methods for detecting and quantitating toxic agents that might be used in criminal activities or terror attacks. There are several toxic proteins that could potentially be used in bioterrorism or biocrime. For example, the plant toxins ricin and abrin are readily available, v...

Obstruction to the passage of food through the intestine leads to adverse symptoms and complete obstruction causes death. Acute obstruction in the upper part of the small intestine is more rapidly fatal than in the intestine lower down. The symptoms are those of a severe, rapidly developing toxemia. Toxic substances accumulate in the obstructed intestine, which when injected intravenously in an...

Cyanide is highly toxic Cyanide is one of the most toxic chemical substances on Earth. Cyanide is toxic to most aquatic life and humans, even at low concentrations. Its use in gold mining is controversial. The extreme toxicity of cyanide arises from its readiness to react with other elements and hence interfere with normal biological processes. Cyanide gas is a biological weapon and was used in...

a risk assessment study was conducted to predict the expected hazardous influence on the ecosystem resulted from urbanization and industrialization activities at helwan area, egypt. to achieve these goals, soils, plants and water samples were collected from helwan area, and their total concentrations of inorganic contaminants (cd, cr, co, cu, fe, mn, ni, pb, and zn) and organic pollutants; such...

W hen a large-scale chemical incident occurs and large numbers of people are seeking care for chemical exposure at local hospitals, personnel at local or state health departments can be overwhelmed and unsure of how to best proceed. The Assessment of Chemical Exposures (ACE) program at the Agency for Toxic Substances and Disease Registry (ATSDR) is available to help public health agencies respo...

Life cycle impact assessment (LCIA) and comparative risk assessment (RA) use the same building blocks for analyzing fate and potential effects of toxic substances. It is tacitly assumed that emission-effect calculations can give uniform and decisive answers in debates on toxicity problems. For several decades, mainstream policy sciences have taken a different starting point when analyzing decis...

The data of this study was collected from 252 teachers, principals and vice-principals offemales’ high schools in district one through one researcher-administered questionnaire, and was then analyzed. The validity of the questionnaire was approved by seven university professors. Cronbach’s alpha was used in order to measure the reliability of the questionnaire. The total calculated alpha was 0....