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....

objective(s) the aim of this study was to investigate the overall effect of cardiac vasoactive factors during coronary occlusion and reperfusion on peripheral vascular tone, using a sequential isolated rabbit heart-ear perfusion model. materials and methods isolated ears were perfused with the effluent of isolated hearts subjected to ischemia (30 min) and reperfusion (180 min, n=6). the compara...

Lipotropic action of choline In 1924 Allan, Bowie, Macleod, and Robinson' reported that depancreatized dogs receiving adequate amounts of insulin and maintained on a diet of lean meat, sucrose, and bone ash did not survive for periods of longer than a few months. They also observed that symptoms of failure of liver function due to fat infiltration of the liver found in such animals could be pre...

Pectins are a group of plant polysaccharides whose principal component is 1,4-linked a-d-galactosyluronic acid (O’Neill et al., 1990). Pectins are present in the primary cell walls of all seed-bearing plants and in the junction between cells called the middle lamella. The primary wall surrounds growing plant cells, meristematic cells and cells in succulent tissue such as fruit. The secondary wa...

background: the pattern of drug abuse in iran has dramatically changed in recent years, turning from the traditional opioids [opium, opium dross, and refined opium dross (shireh)] into drugs with newer forms. the present study is aimed at investigating the frequency of pathological changes in the lungs of bodies with positive postmortem toxicology results for narcotics and psychotropic substanc...

introduction: the effect of fluid and food restrictions on biochemical substances relating to the renal and bone function of pregnant women is not well defined. the purpose of this study is to evaluate the effects of fluid and food restriction on the following substances in pregnant fasting women during ramadan: blood urea nitrogen (bun), creatinine (cr), calcium (ca), phosphorus (p), and alkal...

this study was conducted to identify emission characteristics of certain hazardous substancescontained in the plastic of used home electrical and electronic appliances keeping in view compliance with therestriction of hazardous substances (rohs) directive and to estimate the possibility of safe recyclingpractices. according to the results, the concentration of cadmium, lead, mercury and chromiu...

growing demand for wheat grain with optimal technological parameters results in looking for the possibilities of accurately meeting the plant needs. environmental conditions in the surroundings of germinating grains can be improved by application of humic preparations. qualitative features of grain can be also changed by foliar application of potassium, which is the activator of enzymes catalys...