نتایج جستجو برای: electric strength

تعداد نتایج: 345381  

Journal: :iranian journal of basic medical sciences 0
ameneh sazgarnia research center of medical physics, avicenna research institute, mashhad university of medical sciences, mashhad, iran mohammad hossein bahreyni-toosi research center of medical physics, avicenna research institute, mashhad university of medical sciences, mashhad, iran majid valizadeh zabol university of medical sciences, zabol, iran fatemeh homaei research center of cancer; avicenna research institute; mashhad university of medical science, mashhad, iran habibollah esmaily department of community medicine &public health, mashhad university of medical sciences, mashhad, iran

objective(s) this study was carried out in order to evaluate the effects of electrochemotherapy, electrical pulses and chemotherapeutic drugs on the killing of cancerous cells and their probable synergistic effects. materials and methods electrochemotherapy treatments conducted on mcf-7 cell line derived from human breast adenocarcinoma tumor using four chemotherapeutic drugs including bleomyci...

2011
P Zhao S Goljahi W Dong T Wu P Finkel R Sahul K Snook J Luo W Hackenberger C S Lynch

The effect of an electric field on the bending behavior of [001] oriented and poled relaxor Pb(In1/2Nb1/2)O3–Pb(Mg1/3Nb2/3)O3–PbTiO3 (PIN–PMN–PT) single crystals was measured using a four point bending apparatus with a longitudinal electric field applied to the bar during bending. The surface finish and electric field amplitude were observed to affect the bending strength. Polished surfaces imp...

Journal: :Journal of food science 2010
Suvaluk Asavasanti Seda Ersus William Ristenpart Pieter Stroeve Diane M Barrett

The impact of pulsed electric fields (PEF) on cellular integrity and texture of Ranchero and Sabroso onions (Allium cepa L.) was investigated. Electrical properties, ion leakage rate, texture, and amount of enzymatically formed pyruvate were measured before and after PEF treatment for a range of applied field strengths and number of pulses. Critical electric field strengths or thresholds (E(c))...

2005
I. V. Ponomarev L. I. Deych A. A. Lisyansky

Considering the effects of the electric field on the low temperature absorption line of quantum well excitons, we show that, for moderate strength of the electric field, the main contribution to the field dependence of the linewidth results from the field induced modifications of the inhomogeneous broadening of excitons. We find that the strength of the random potential acting on the quantum we...

Journal: :تحقیقات نظام سلامت 0
سمیه بلقن آبادی دانشجوی کارشناسی ارشد گروه مهندسی بهداشت حرفه ای، دانشکده بهداشت، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران حسینعلی یوسفی مربی، عضو هیأت علمی گروه مهندسی بهداشت حرفه ای، دانشکده بهداشت، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران حبیب اله دهقان استادیار، عضو هیأت علمی، گروه مهندسی بهداشت حرفه ای، دانشکده بهداشت، دانشگاه علوم پزشکی اصفهان، ایران

background: with increased use of computers, exposure to electric and magnetic fields is increasing, the main objective of this study was to evaluate the electric and magnetic field strength in portable computers (laptops) and its relation with eyestrain users. methods: in this cross – sectional study, magnetic and electric fields in 125 laptop computers were measured from 30 cm and 50 cm dista...

2013
Sauro Pierucci Jiří J. Klemeš Aleksandra Zderic Edwin Zondervan Jan Meuldijk

Pulsed electric field (PEF) is commonly understood as a fast, non-thermal, and highly effective method for extraction of intracellular compounds. This treatment involves discharge of high voltage electric pulses of a few microseconds into the food product which is placed or passed between two electrodes (Angersbach et al., 2000). Results of experimental investigation of the electric breakage of...

Journal: :ACS nano 2009
Da-Wei Wang Feng Li Jinping Zhao Wencai Ren Zhi-Gang Chen Jun Tan Zhong-Shuai Wu Ian Gentle Gao Qing Lu Hui-Ming Cheng

Freestanding and flexible graphene/polyaniline composite paper was prepared by an in situ anodic electropolymerization of polyaniline film on graphene paper. This graphene-based composite paper electrode, consisting of graphene/polyaniline composite sheets as building blocks, shows a favorable tensile strength of 12.6 MPa and a stable large electrochemical capacitance (233 F g(-1) and 135 F cm(...

2009
Aloke Kumar Stuart J. Williams Steven T. Wereley

Strong microfluidic vortices are generated when a near-infrared (1,064 nm) laser beam is focused within a microchannel and an alternating current (AC) electric field is simultaneously applied. The electric field is generated from a parallel-plate, indium tin oxide (ITO) electrodes separated by 50 lm. We present the first l-PIV analysis of the flow structure of such vortices. The vortices exhibi...

1996
JUN S. SONG

Charges are often called the coupling constants because their strength determines the coupling, or interaction, strength with the corresponding fields. As we shall see shortly in greater detail, there is a striking symmetry between electric and magnetic fields in our description of electromagnetism. That is, the equations governing the dynamics of the electric and magnetic fields are unchanged ...

2014
A. R. Guzman A. Han

Droplet manipulation is comprised of techniques such as droplet generation, merging, and splitting, of which droplet merging is one of the major bottlenecks in achieving high-throughput analysis. Here we present a three dimensional electrode that improves the electric field uniformity and field strength experienced by two adjacent droplets undergoing merging. We conducted a systematic compariso...

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