نتایج جستجو برای: plasma density

تعداد نتایج: 740512  

Journal: :iranian journal of pharmaceutical sciences 0
naficeh sadeghi drug and food control department, faculty of pharmacy, medical sciences/university of tehran, tehran, iran behrooz jannat food and drug laboratory research center, ministry of health and medical education, tehran, iran mohammad-reza oveisi drug and food control department, faculty of pharmacy, medical sciences/university of tehran, tehran, iran mannan hajimahmoodi drug and food control department, faculty of pharmacy, medical sciences/university of tehran, tehran, iran molouk hadjibabaie department of pharmacotherapy, faculty of pharmacy, medical sciences/university of tehran, tehran, iran ahmad-reza jamshidi internal medicine department, faculty of medicine, medical sciences/university of tehran, iran saeed javadi

osteoporosis is a silent epidemy of today's world, and is also a prevalent problem of health in iran. the role of nutrients such as ascorbic acid, a key antioxidant vitamin, in this disease has recently attracted researchers' attention. in this study, we studied the relation between plasma ascorbic acid concentration and bone mineral density (bmd) in women referring to jami clinic, te...

In this work, applicability of Particle in Cell-Monte Carlo Collisions (PIC-MCC) simulation method for better understanding of the plasma physical mechanisms and real important aspects of a plasma column driven by surface wave plasma discharges that is used in plasma antennas is examined. Via the implementation of geometry and physical parameters of the plasma column to an Object Oriented PIC-M...

Journal: :فیزیک زمین و فضا 0
علیرضا محمودیان institute of geophysics, university of tehran alireza mohebalhojeh institute of geophysics, university of tehran مجید مزرعه فراهانی institute of geophysics, university of tehran wayne scales the bradley department of electrical and computer engineering,virginia tech, usa

on the source of plasma density and electric field perturbations in pmse and pmwe regionspolar mesospheric summer/winter echoes (pmse/pmwe) are very strong radar echoes produced by ionospheric electron density fluctuations at half the radar wavelength. the main focus of this paper is the altitude range 80 to 90 km in summer and altitude range 65-86 km in winter in the polar mesosphere . this pa...

A Mazandarani, S A Ghasemi, S Shahshenas,

In this paper, plasma main characteristics such as electron mean temperature, electron number density, and oscillation frequency have been measured experimentally using the double Langmuir probe diagnostic system. In our experiment, the plasma was generated by applying the low pressure dc glow discharge in several common gases. The experimental results indicated the highest plasma density and o...

Journal: یافته 2005
farahnaz Changavi , fatemeh Janani ,

Background: Preeclampsia is one of the most common complications of pregnancy. It is the cause of high morbidity and mortality for mothers and fetuses, especially in developing countries. The etiology of preeclampsia is unknown. One of the hypothesis on pathophysiology of preeclampsia is dyslipidemia. The aim of this study was to determine maternal plasma levels of lipoproteins in patients with...

B. Mojazi Amiri H.H. Abdoulhay J. Cosson M. Karami M. Pourkazemi M.A. Akhoundzadeh S.M.H. Alavi,

Some biological aspects of semen were investigated in the Persian sturgeon, Acipenser persicus, by determination of seminal plasma indices (ionic composition and osmolality), sperm density and their relationships with sperm motility. The osmolality of seminal plasma ranged from 42.00 to 111.00 mOsmol Kg-1. The concentrations of Sodium (Na+), Potassium (K+), Chloride (Cl-), Calcium (Ca2+) and Ma...

اسماعیلیان عراقی, امیرحسین, حسین خانی, حسن,

In this paper, considering the plasma electronic exchange intraction effects, first, Thomas–Fermi equation has been solved numerically. Then, employing the results of these equations, the amount of exchange corrections for pressure and internal energy of the plasma (electron gas with specific atomic number) has been calculated based on variation of  plasma density and temperature. The results o...

ایرانی, شلیر , حبیبی, مهدی , حکیمی پژوه, حسین,

 We have considered the self-focusing of a Gaussian laser pulse in unmagnetized plasma. High-intensity electromagnetic fields cause the variation of electron density in plasma. These changes in the special conditions cause the acceleration of electrons to the higher energy and velocities. Thus the equation of plasma density evolution was obtained considering the electrons ponderomotive force. T...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید بهشتی - دانشکده علوم 1387

چکیده ندارد.

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید بهشتی 1387

چکیده ندارد.

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