Reactions of  N-isocyaniminotriphenylphosphorane with α- chloroketones in the presence ofaromatic carboxylic acids proceed smoothly at room temperature and in neutral conditions toafford new disubstituted 1,3,4-oxadiazole derivatives in high yields.

the purpose of the work presented here was to investigate endotheliumdependent relaxations in the rabbit coronary ligation model of heart failure. we investigated endothelium-dependent relaxations at the level of larger vessels (thoracic aorta and vena cava left renal artery and left renal vein lateral saphenous artery and lateral saphenous vein and finally central ear artery and marginal ear v...

introduction : based on the reported studies, approximately 90 percent of workplace accident is due to unsafe behaviors and human errors, even though, in a safe work conditions. so, the most important strategy in reducing the rate of these accident is training workers regarding the safe behaviors. the current study is going to determine the effects of a safety education program on promoting hea...