statistics have shown that the incidence of miscarriage among nurse anesthetists and anesthesiologists who were pregnant before being em­ployed was 10% while those who were pregnant during their employment were 20%. this was attributed to the teratogenic effect of anesthetics agents used in the operating room on the fetus. today with the use of special askrog valve, 90% of the anesthetic gases ...

landslide like phenomena such as earthquake, flood, and volcano eruption are considered as the important natural events which happen every year in the mountainous and the elevated regions of the country and incur substantial damages and losses. today, in the countries involved with the issue of earthquake sliding, there is an increasing tendency in evaluating and zoning of the danger and damage...

During the early phase of an inflammatory response, innate cells can use different strategies to sense environmental danger. These include the direct interaction of specific activating receptors with pathogen-encoded/danger molecules or the engagement of cytokine receptors by pro-inflammatory mediators produced by antigen presenting cells in the course of the infection. These general recognitio...

the environment belongs to everybody, but as a result of incorrect use of natural resources by a minority and selfish groups, the environment has been polluted. the environmental specialists have stated the danger and suggested some solutions. the writer belives that besides of all solutions, there is another way which suggests the change of mans attitude towards the world and himself. in this ...