نتایج جستجو برای: Magnetic Field

تعداد نتایج: 1045756  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - پژوهشکده فنی و مهندسی 1388

asymmetric polyethersulfone (pes) microfiltration flat sheet membranes were composed by the phase inversion method (pim) and were used as supports. composite membranes were fabricated by coating silicone rubber as selective layer. effect of different concentrations of pes and pdms and different solvent such as nmp, dmf and dms effects as pes solvents and support thickness and different coagulat...

Journal: :بوم شناسی کشاورزی 0
حسن فیضی پرویز رضوانی مقدم علیرضا کوچکی ناصر شاه طهماسبی امیر فتوت

in order to study the effect of intensity and exposure duration magnetic field on wheat (triticum aestivum l.) seed germination an experiment was conducted in laboratory of ferdowsi university of mashhad, iran. the experiment was including 11 treatments as three level of magnetic field intensities (pretreatment of seeds with 50, 100 and 150 mt magnetic field) and three exposure durations (10, 2...

Journal: :journal of physical & theoretical chemistry 2014
f. soheilian m.r. soltani m. firoozi s. a. hosseini

the entanglement at zero-temperature is studied in a two-qubit xz spin-1/2 chain model in anexternal magnetic field which is applied in the z direction. we have obtained an analytical relation forthe effect of the external magnetic field on the concurrence. it is shown that the ground state of thesystem depends on the strength of exchange coupling. we have shown that the analytical relation oft...

Journal: :international archives of health sciences 0
m.b. miranzadeh environmental health engineering department, health faculty, kashan university of medical sciences, kashan, iran m. naderi qotb-e-pavandi avenue, pezeshk boulevard, kashan university of medical sciences, kashan, iran h. akbari biostatistics & public health department, health faculty, kashan university of medical sciences, kashan, iran a. mahvi environmental health engineering department, health faculty, tehran university of medical sciences, tehran, iran v. past environmental health engineering department, health faculty, kashan university of medical sciences, kashan, iran

aims: arsenic contamination of natural water resources has become an important environmental problem in the world. the adsorption method by iron filings adsorbent or zero-valent iron was used. the study aimed to evaluate the efficiency of iron filings in arsenite removal from polluted water and to investigate the effect of magnetic field on the process. materials & methods: this interventional ...

Journal: :پژوهش های زراعی ایران 0
محمد حسن راشد محصل اکبر علی وردی

in order to compare effect of magnetic field and frigate surfactant to enhance the efficacy of iodosulfuron-methyl-sodium plus mesosulfuron-methyl (chevalier) to control wild oat, a greenhouse experiment of dose-response was conducted. treatments were 0, 3, 6, 12, 18 and 24 doses g a.i. ha-1 of chevalier (i) without treatment, (ii) with frigate % 0.1 v/v, (iii) with magnetic field, and (iv) fri...

Journal: :مکانیک سیالات و آیرودینامیک 0
امین حدیدی محمدرضا انصاری

in this study, the effects of strength and direction of the magnetic field on lid-driven cavity flow in the whole range of magnetic field strength variations, which already used in practice up to present (0 to 10 tesla), are studied. the governing equations, including conservative equations of momentum, continuity and magnetic field equations were solved numerically. momentum and continuity equ...

Journal: :iranian journal of toxicology 0
حسین سرمدیان hossein sarmadian department of infectious diseases, arak university of medical sciences, arak, iran. رضا قاسمی خواه reza ghasemikhah department of parasitology and mycology, arak university of medical sciences, arak, iran. فاطمه میرمرادی fatemeh mirmoradi general physician, arak university of medical sciences, arak, iran.

background: hydatidosis it is a zoonotic disease which is caused by the larval stages of different species of the tapeworms (cestoda) of genus echinococcus. currently, the surgery is most definitive method of treatment for hydatid cyst, but always there is the risk of leakage or rupture during the surgery, therefore it is considered unreliable method. methods: protoscoleces of hydatid cysts wer...

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...

Journal: :physical chemistry research 0
gholam hossein bordbar shiraz university n. taheri shiraz university

in this paper, the hartree-fock method has been formulated to investigate some of the ground state properties of quasi-one-dimensional interacting electron gas in the presence of the magnetic field. the bare coulomb interaction between electrons has been assumed. for this system, we have also computed some of its thermodynamic and magnetic properties such as the energy, pressure, incompressibil...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید بهشتی - دانشکده علوم 1382

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