نتایج جستجو برای: hendijan field
تعداد نتایج: 786832 فیلتر نتایج به سال:
آلتراسوند یکی از روش های تصویربرداری است که هیج ضرری برای بدن ندارد، بنابرین نسبت به سایر دستگاه های پزشکی از محبوبیت و کاربرد بیشتری برخوردار است. طراحی بورد front-end یکی از چالشهای بزرگ در طراحی دستگاه سونوگرافی است که در آن سیگنالهای مدوله شده از بدن با دامنه بسیار کم باز می گردند که می توانند در رنج فرکانسی 2 تا 12 مگاهرتز کار کنند. تکنولوژی روز سعی در کوچک کردن مدارهای الکترونیکی و کمینه ...
Purpose: To investigate the energy dependence/spectral sensitivity of silicon diodes designed for small-field dosimetry and obtain response factors (RFs) for arbitrary photon spectra using Monte Carlo (MC) simulations. Methods: The EGSnrc user-code DOSRZnrc was used to calculate the dose deposition in water and in the active volume of a stereotactic diode f...
background: health-related quality of life is affected by electromagnetic field exposure in each person everyday life. however, this is extremely controversial issue. objective: investigation of the associations between electromagnetic field exposure and miscarriage among women of tehran. materials and methods: in this longitudinal study, 462 pregnant women with gestational age <12 wks from sev...
Background and Aim: Equitable distribution of health sector resources has always been one of the major challenges of this sector. Due to health care needs, equitable distribution of physicians is a determining factor in health system policies. The purpose of this study was to investigate the distribution of justice among the general practitioners and specialists in Khuzestan province. Materia...
after mentioning the main differences between malaria control and malaria eradication, it is suggested that all anti–malaria activities in iran should be renamed as malaria control. applied research in malaria is identified into four categories covering the following subjects. 1- malaria parasites and anti-malaria drugs. 2- malaria vectors. 3- malaria in the community. 4- use of epidemiological...
Introduction: Breast conserving surgery followed by adjuvant radiotherapy (RT) of the whole breast is accepted as the treatment of choice in early stage breast cancer. Due to breast irregularities, it is difficult to access homogenous dose distribution with conventional techniques. Currently, it is possible to use varied breast irradiation techniques, such as field- in-field (F...
This study investigated how English as Foreign Language (EFL) learners with different learning styles (Field dependent and field independent) boost up their reading comprehension abilities as they develop their metacognitive skills. To conduct this research, 60 participants were randomly invited to sit PET (Preliminary English Test) to ensure homogeneity of the participants in terms of language...
the present dissertation aims to investigate four-word lexical bundles in applied linguistics research articles by iranian and internationally-published writers. the aims of this study are two-fold: first of all, attempts have been made to create a comprehensive list of the most commonly used four-word lexical bundles categorized by their type and token frequency, their structural characteristi...
it is necessary to understand the effective factors in participation in physical activity in order to increase this activity in school students. the aim of the present study was to compare the level of physical activity between field dependent/ independent students in guidance schools of kharame city of fars province. at first 150 male students were randomly selected and after frame and rod tes...
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