نتایج جستجو برای: electric frequency control

تعداد نتایج: 1860062  

Journal: :international journal of automotive engineering 0
biglarian keshavarz mazidi najafi

many studies have been done on hybrid vehicles in the past few years. the full hybrid vehicles need a large number of batteries creating up to 300 (v) to meet the required voltage of electric motor. the size and weight of the batteries cause some problems. this research investigates the mild hybrid vehicle. this vehicle includes a small electric motor and a high power internal combustion engine...

Journal: :The Journal of neuroscience : the official journal of the Society for Neuroscience 1991
A Mills H H Zakon

The quasi-sinusoidal electric organ discharge (EOD) of the weakly electric fish Sternopygus is involved in communication and orientation. Each monophasic pulse of the low-intensity EOD is a compound action potential (AP) from the simultaneously firing electrocytes of the electric organ. EOD frequency is lower and EOD pulse duration longer in sexually mature males than in sexually mature females...

Journal: :journal of biomedical physics and engineering 0
z. shankayi department of medical physics, faculty of medical science, tarbiat modares university, tehran, iran s.m.p. firoozabadi department of medical physics, faculty of medical science, tarbiat modares university, tehran, iran z. saraf hassan department of immunology, faculty of medical science, tarbiat modares university, tehran, iran

propose: standard electroporation and electrochemotherapy caused the endothe- lial cell permeability and reduction in tumor blood flow. the effects of low voltage and high frequency electroporation on the endothelial cells permeability and viability were expected. therefore, the propose of present study was to evaluate the effect of electroporation with bleomycin or alone on viability and perme...

2009
David A. Powell Ilya V. Shadrivov Yuri S. Kivshar

We propose and design a new type of nonlinear metamaterials exhibiting a resonant electric response at microwave frequencies. By introducing a varactor diode as a nonlinear element within each resonator, we are able to shift the frequency of the electric mode stop band by changing the incident power without affecting the magnetic response. These elements could be combined with the previously de...

Journal: :Brain stimulation 2014
Stephen L Schmidt Apoorva K Iyengar A Alban Foulser Michael R Boyle Flavio Fröhlich

BACKGROUND Transcranial alternating current stimulation (tACS) is a non-invasive brain stimulation modality that may modulate cognition by enhancing endogenous neocortical oscillations by application of sine-wave electric fields. Yet, the role of endogenous network activity in enabling and shaping the effects of tACS has remained unclear. OBJECTIVE We combined optogenetic stimulation and mult...

Introduction: Steel industries are one of the major needs of the country. Noise pollution in steel production operations is an occupational hazard because of special equipment such as electric arc furnaces. The aim of this study was to evaluate noise pollution in various units of a steel company for determining the occupational exposure pattern. Methods: This was a cross-sectional and analyt...

Journal: :journal of dental school, shahid beheshti university of medical sciences 0
abdolrahman showkatbakhsh dept. of orthodontics, school of dentistry, shahid beheshti university of medical sciences, tehran, iran farnaz younessian dentofacial deformities research center, research institute of dental sciences, shahid beheshti university of medical sciences, tehran, iran. omid dianat dept. of endodontic, school of dentistry, shahid beheshti university of medical sciences, tehran, iran. seyed sadra izadi dept. of clinical sciences, faculty of veterinary medicine, university of tehran, tehran, iran. mohammadreza badiee dentofacial deformities research center, research institute of dental sciences, shahid beheshti university of medical sciences, tehran, iran. mehrdad showkatbakhsh phd student of electrical engineering, university of southern california, california, usa.

objectives: the purpose of this study was to evaluate whether intra-canal application of controlled direct electric current (dec) could accelerate the amount of orthodontic tooth movement (otm) in young adult mixed breed dogs. methods: fourth premolars of both jaws of five young adult mixed breed dogs were divided into two groups of control and experimental groups. orthodontic force was applied...

Journal: :Physical review letters 2008
N Kumada T Kamada S Miyashita Y Hirayama T Fujisawa

We demonstrate an alternative nuclear spin resonance using a radio frequency (rf) electric field [nuclear electric resonance (NER)] instead of a magnetic field. The NER is based on the electronic control of electron spins forming a domain structure. The rf electric field applied to a gate excites spatial oscillations of the domain walls and thus temporal oscillations of the hyperfine field to n...

2014
K. Jagatheesan Dr. B. Anand

© 2014 AENSI Publisher All rights reserved. To Cite This Article: K.Jagatheesan, Dr.B.Anand ., Automatic Generation Control of Three Area Hydro-Thermal Power Systems considering Electric and Mechanical Governor with conventional controller and Ant Colony Optimization technique. Adv. in Nat. Appl. Sci., 8(20): 2533, 2014 INTRODUCTION Nowadays electrical device has become the basic need of human ...

Electric motors are the largest consumer of world electric energy, consuming more than twice as much as lighting, the next largest consumer. Electric motors account for between 43 and 46% of all global electricity consumption approximately. They give rise to about 6 040 Mt of CO2 emissions. End‐users approximately spend USD 565 billion per year on electricity [1]. In recent years...

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