نتایج جستجو برای: electric strength

تعداد نتایج: 345381  

2008
Nikolai I Lebovka Eugene Vorobiev

The nature of non-exponential kinetics in microbial cells inactivation by pulsed electric fields (PEF) is discussed. It was demonstrated that possible mechanism of non-exponential kinetics can be related to orientational disorder in suspension of microbial cells of anisotropic form. A numerical studies of spheroidal cell suspensions was carried out. The most pronounced deviations from the expon...

Journal: :The Journal of chemical physics 2013
Zhen Sun Sven Stafström

Exciton dissociation in a donor-accepter polymer heterojunction has been simulated using a nonadiabatic molecular dynamics approach, which allows for the coupled evolution of the nuclear degrees of freedom and the electronic degrees of freedom described by multiconfigurational electronic wavefunctions. The simulations reveal important details of the charge separation process: the exciton in the...

2006
Clóves G. Rodrigues Áurea R. Vasconcellos Roberto Luzzi

A theoretical study of the mobility of n-doped III-Nitrides in wurtzite phase is reported. We have determined the nonequilibrium thermodynamic state of the bulk n-InN, n-GaN, and n-AlN systems driven far away from equilibrium by a strong electric field in the steady state, which follows after a very fast transient. For this we solve the set of coupled nonlinear integro-differential equations of...

2012
Andreja N Kopitar Vladimir Kotnik Gaj Vidmar Alojz Ihan Primoz Novak Martin Stefancic

BACKGROUND Neuromuscular electric stimulation is widely used for muscle strengthening in clinical practice and for preventative purposes. However, there are few reports on the effects of electric stimulation on the immune response of the organism, and even those mainly describe the changes observed immediately after the electrotherapeutic procedures. The objective of our study was to examine th...

Journal: :Nanotechnology 2009
Hui Ouyang Zhenhai Xia Jiang Zhe

The static and dynamic behaviors of partially charged and end-grafted polyelectrolyte brushes in response to electric fields were investigated by means of molecular dynamics simulation. The results show that the polymer brushes can be partially or fully stretched by applying an external electric field. Moreover, the brushes can switch reversibly from collapsed to stretched states, fully respond...

رحیمی, زینب, قربانی, مرضیه, لهراسبی, امیر,

Calcium channels are cell membrane proteins that play an important role in control the Ca ion flux through the membrane. In this study, the effect of external constant electric field on the dynamics of calcium ions in a L-type channel, located within a stochastically fluctuating medium, is modeled via the application of the molecular dynamics (MD) simulation method. The obtained results show th...

Journal: :NeuroImage 2016
Ilkka Laakso Satoshi Tanaka Marko Mikkonen Soichiro Koyama Norihiro Sadato Akimasa Hirata

The electric field produced in the brain is the main physical agent of transcranial direct current stimulation (tDCS). Inter-subject variations in the electric fields may help to explain the variability in the effects of tDCS. Here, we use multiple-subject analysis to study the strength and variability of the group-level electric fields in the standard brain space. Personalized anatomically-acc...

Journal: :The Journal of chemical physics 2004
Seung Ha Kim Ajay S Panwar Satish Kumar Kyung Hyun Ahn Seung Jong Lee

We use two-dimensional Brownian dynamics simulations to study the electrophoresis of a bead-rod chain through a narrow slit. A constant electric field is assumed to act inside and outside of the slit, and each bead on the chain is assigned a constant uniform charge. We calculate the dependence of the polymer transit velocity on chain length, slit dimensions (width-to-length ratio), and electric...

2009
Eli Forti Daniela Ike Marcela Barbalho-Moulim Irineu Rasera Dirceu Costa

INTRODUCTION Bariatric surgery has become increasingly more recommended for the treatment of morbidly obese individuals for whom it is possible to identify co-morbidities other than alterations in pulmonary function. The objective of this study was to evaluate the effects of conventional chest physiotherapy (CCP) and of conventional physiotherapy associated with transcutaneous electrical diaphr...

Journal: :Journal of rehabilitation research and development 2006
Mohammad Bayat Zahra Asgari-Moghadam Mohammad Maroufi Fatemeh-Sadat Rezaie Maryam Bayat Mohammad Rakhshan

We investigated the effects of microamperage electrical stimulation (MES) on the healing of skin incision in rabbits. Thirty male adult rabbits were randomly divided into sham-treated and experimental groups. Each group was divided into three subgroups, based on the duration of experiment (4, 7, and 15 days). A full-thickness incision was made on the skin of each rabbit. The experimental group ...

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