نتایج جستجو برای: the dark room

تعداد نتایج: 16077291  

Journal: :journal of current ophthalmology 0
میرغفار صحیحی اسکویی mir ghaffar sahihi oskooei محمد قاسمی برومند mohammad ghasemi broumand هاله کنگری haleh kangari مریم حیدرپور میمه maryam heydarpour meymeh علیرضا هژبری نوبری ali reza hojabri nobri محمود طباطبایی فر seyed mahmoud tabatabaei far

human has always been trying to become familiar with different parts of the eye. it seems that in the beginning of his efforts he has become familiar with the functions of the pupil of the eye, using these data, he was able to make the dark room and use the hole to relieve the refractive errors. it can be said that the human in the pre-history and post-history periods had been able to solve his...

ژورنال: فیض 2019

Background: Many studies have shown that zinc has an important effect on learning, memory and cognition. On the other hand, ovariectomy in adult female rats reduces memory and learning. Also, regarding the contradictory reports on the effects of zinc chloride on memory and learning, this study aimed to examine the effect of zinc chloride on passive avoidance memory of ovariectomized female rats...

حیدریه, نسرین, غلام پور فرد, فاطمه, مقدمی راد, محمد,

Introduction: Epilepsy is the most common disorder of the central nerves system. Patients suffering from epilepsy can experience a wide range of neuropsychological disorders such as impaired memory, disturbances in attention and information processing. Due to the effect of anticonvulsant carbamazepine and its effect on the memory and learning, the aim of this study was investigating the effect ...

رحیمی , سیدعلی, سالار , شکراله,

Background and purpose: As radiography units of hospitals are normaly expensive and ever evolving, keeping them up to national and international standard are important. The purpose of this study was to study the conditions of radiology units and compare them with the ICRU NCRP and ICRP standards. Materials and methods : Different variables have been considered to evaluate the conditions of...

Background & Aims: Previous research has shown that adult male rats’ castration reduces memory and learning. On the other hand, zinc chloride has a positive impact on memory and learning in some studies. Therefore, the aim of this study was to investigate effects of zinc chloride on passive avoidance memory of male rats, in gonadectomized peri-pubertaly. Materials & Methods: In this expe...

Journal: :JAMA: The Journal of the American Medical Association 1907

Journal: :JAMA: The Journal of the American Medical Association 1906

Journal: :Journal of Histochemistry & Cytochemistry 1963

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده فیزیک 1390

in this thesis, barium ferrite nano particles were prepared by sol-gel method. their structural and magnetic properties of samples have been investigated using thermo gravimetric analysis (tg-dta), x-ray powder diffractometer (xrd), fourier transform infrared (ftir), scanning electron microscopy (sem), field emission scanning electron microscopy (fesem), ac susceptometer, vibrating sample magne...

2009
Thomas Plümper Christina J. Schneider

Political science research on policy convergence has largely remained inconclusive. While many studies found support for the convergence hypothesis, an almost equally large number of studies rejected it. Convergence thus could be a less general phenomenon than many theorists believe. This article identifies a second possible explanation. The variance approach, which dominates political science ...

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