background and objectives: stress among students of the health sciences can lead to reduced performance of future healthcare human resources. to address this threat there is a need to develop a robust understanding of the nature and intensity of stress in these professionals. to help approaching this goal, the present study assessed stress-induced life change in students of tehran university of...

all of the tea plantations in iran are concentrated in the caspian sea region on soils previously developed under deciduous natural forests. this research conducted to study the effect of land use change (from forest to tea) on selected physico-chemical and mineralogical properties of soils under humid climate and mountainous landscape in northern iran. three transects facing west to northwest ...

objective: an increasing number of studies have reported on shifts in timing and length of the growing season, based on phonological, satellite and climatologically studies. changes in the timing and length of the growing season (gsl) may not only have far reaching consequences for plant and animal ecosystems, but persistent increases in gsl may lead to long-term increases in carbon storage and...

OBJECTIVES Thyroid cancer incidence is increasing worldwide, while mortality from thyroid cancer is stable or decreasing. Consequently, survival rates are rising. We describe time trends in the incidence, mortality, and 5-year survival of thyroid cancer in Israel in 1980-2012, in light of the global trends. METHODS Israel National Cancer Registry database provided information regarding thyroi...

background: single nucleotide polymorphism (snps) are considered as one of the underlying causes of male infertility. proper sperm chromatin packaging which involves replacement of histones with protamines has profound effect on male fertility. over 20 snps have been reported for the protamine 1 and 2. materials and methods: the aim of this study was to evaluate the frequency of two previously ...

Background: Early diagnosis of appendicitis is important during pregnancy.  Unlike omentom, cecum and appendix are not likely to be displaced by the growing uterus, so the concept of position change of the appendix during pregnancy is questionable. Objective: To determine the anatomical location of appendix during pregnancy. Methods: In a prospective study from October 1995 to March 1999, 291 w...