نتایج جستجو برای: electrical

تعداد نتایج: 194323  

Journal: :basic and clinical neuroscience 0
fataemeh etemadi department of physiology, faculty of veterinary medicine, tehran university, tehran, iran mohammad sayyah department of physiology and pharmacology, pasteur institute of iran, tehran, iran hamid gholami pourbadi department of physiology and pharmacology, pasteur institute of iran, tehran, iran vahab babapour department of physiology, faculty of veterinary medicine, tehran university, tehran, iran

introduction: although hippocampus is the most famous brain area involved in temporal lobe epilepsy, hippocampal kindling (hk) develops very slowly. hence, rapid kindling is usually preferred to the traditional kindling and it is widely used. in this article we aimed at finding the optimal stimulus pattern, which yields the fastest hk rate. methods: stimulus patterns with different duration (2,...

A. Nasirahmadi, and A. A. Soudi, L. Estehghari,

The compounds, lanthanium chromite, lanthanium magnetite and lanthanium ferric oxide were prepared through sol-gel methods in powdered form, then calcinated, peletized, and sintered at various temperatures. Electrical conductivity of these compounds was measured at various temperatures. The effectiveness of strontium as a dopant on electrical conductivity was also investigated. Electrical condu...

پایان نامه :وزارت بهداشت، درمان و آموزش پزشکی - دانشگاه علوم پزشکی و خدمات بهداشتی درمانی شهید صدوقی یزد 1379

با توجه به اینکه دندانپزشکی در هنگام درمان بیماران در معرض ابتلا به بیماریهای واگیردار خطرناک قررا دارد و از آنجا که پوست دست و صورت، مخاط بینی و چشم راه مناسبی برای نفوذ میکروارگانیسمهای پاتوژن محسوب می شوند، استفاده از وسایل حفاظت شخصی (دستکش، ماسک، عینک، روپوش) به عنوان یک روش پیشگیری در جوامع دندانپزشکی مطرح شده است. اگر چه پوست دست سالم خود یک محافظ خوب در مقابل نفوذ عوامل بیماریزا می باشد...

Journal: :journal of sciences islamic republic of iran 0

the variations of the electrical conductivity with temperature and electric field of the ternary alloy of gallium, aluminium and arsenic (al0.75ga0.25as) with atomic compositions of 99/1 and 98/2 have been investigated. the electrical conductivity of the alloy increases with temperature according to the relation, ? = ?0 exp (??/kt). the activation energy calculated from this empirical relation ...

Journal: :medical journal of islamic republic of iran 0
s semnanian from the department of physiology, tarbiat modarres university, tehran f motamedi the department of physiology, shaheed beheshti university of medical sciences, tehran, islamic republic of iran.

transcutaneous electrical nerve stimulation (tens) is an analgesia inducing method with increasing applications in clinical procedures. in this study we tried to evaluate the role of the adrenergic system and its different adrenoceptor subtypes in tens-induced analgesia. two types of low and high frequency electrical stimuli were used in rats through needle electrodes, inserted at the base of t...

خادمی, شادی, پالیزوان, محمد رضا,

Background and purpose: Kindling is an animal model of epilepsy induced by repeated stimulation of the brain. The amygdala has been the focus of interest due to large part to its role in epilepsy induction and in fear conditioning in both human and rats. The purpose of the present study was to evaluate whether low electrical stimulation of foot pad of rats during fear can facilitate amygdala...

The purpose of this study is to use the thermal and electrical conductivities of copper oxide nanoparticles and carbon nanotubes for the preparation of high-performance nanofluids for achieving better heat transfer properties. These nanofluids consist of a water/Ethylene Glycol solution containing single-wall carbon nanotubes (SWCNTs) and copper oxide nanoparticles (CuONPs). The effects of such...

ژورنال: سنجش و ایمنی پرتو 2014

Use of carbon nanotubes (CNTs) in dosimetry is a promising technique for real time in vivo dose measurements with high resolution for nuclear medicine and also dose rate monitoring for radiation protection utilizations. In this research with respect to extraordinary electrical properties of CNTs for several order of magnitudes increasing in electrical conductivity of polymeric matrix, the idea ...

Journal: Polyolefins Journal 2016

Isolated carbon nanotubes (CNTs), CNT films and CNT-polymer nanocomposites are a new generation of materials with outstanding mechanical, thermal, electrical and electromagnetic properties. The main objective of this article is to provide a comprehensive review on the investigations performed in the field of characterizing electrical and electromagnetic properties of isolated CNTs and CNT-reinf...

H. R. Azimi R. Taheri,

An empirical electrical conductivity assessment of nanofluids comprising CuO nanoparticles water-based in different concentrations, particles size and various temperatures of nanofluids has been carried out in this paper. These experimentations have been done in deionized water with nanoparticles sizes such as 89, 95, 100 and 112 nm and concentrations of 0.12 g/l, 0.14 g/l, 0.16 g/l and 0.18 g/...

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