one of the main distinctions between geomaterials and other engineering materials is the spatial variation of their properties in different directions. this characteristic of geomaterials -so called heterogeneity- is studied herewith. several spatial distributions are introduced to describe probabilistic variation of geotechnical properties of soils. among all, the absolute normal distribution ...

actors working in global health often portray it as an enterprise grounded in principled concerns, advanced by individuals and organizations who draw on scientific evidence to pursue health equity. this portrait is incomplete. it is also a field of power relations—a social arena in which actors claim and draw on expertise and moral authority to gain influence and pursue career, organizational a...

background: the present work aims to study the out-of-field photon calculation accuracy of a commercial treatment planning system (tps), oncentra, for three-dimensional conformal radiotherapy (3d-crt) and intensity modulated radiation therapy (imrt) treatment techniques from elekta synergy medical linear accelerator. materials and methods: accuracy of individual out-of-field dose components was...

this research has an aim to assess agricultural students' satisfaction from their field of study. the statistical population consisted of 1040 students from the university of bu ali sina (800 bachelor and 240 master students) during the years of 2011 to 2013. through stratified random sampling method 240 bachelor and 80 master students were selected. data was collected by means of a resear...

this paper presents the effect of high environmental heat on behavior of the male charles foster rats. eighty rats were divided into three groups, subjected to (i) acute heat stress (ii) chronic heat stress and (iii) handling control group. animals were exposed to the hot environment in a biological oxygen demand incubator at 38 ± 1ºc (relative humidity 45-50%) for four hours of continuous sing...

introduction: nowadays students’ opinion is considered as a necessary factor to evaluate quality in universities. this study was performed to evaluate the nursing students’ satisfaction about their field of study. methods: the research population in this study consists of all the students of nursing studying at the second to fourth year of university (72 students). the data were collected from ...

background: in order to improve the evaluation of possible rectal toxicity based on the rectal normal tissue complication probability (ntcp), we consider the fractional dependence of the ntcp on the wall thickness (tw) and rectal displacement (rm). materials and methods: the two-dimensional ntcp model (ntcp2d) was developed using radiotherapy plans of ten randomly selected patients with prostat...