نتایج جستجو برای: electric conductor

تعداد نتایج: 149776  

Journal: :Materials research express 2022

Abstract 3D graphene foam is the main aim of this research work. Graphene synthesized on Ni-foam by CVD technique. The has been characterized XRD, FESEM, Raman spectroscopy and BET techniques. resistance with a variance temperature measured through an LCR meter analyzed classical neutrosophic analysis. As result, it seen that expressing both conductor semiconductor electric properties also obse...

2015
Jim Al-Khalili

The history of science is filled with examples of key discoveries and breakthroughs that have been published as landmark texts or journal papers, and to which one can trace the origins of whole disciplines. Such paradigm-shifting publications include Copernicus' De revolutionibus orbium coelestium (1543), Isaac Newton's Philosophiæ Naturalis Principia Mathematica (1687) and Albert Einstein's pa...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2016
Kenneth C Catania

In March 1800, Alexander von Humboldt observed the extraordinary spectacle of native fisherman collecting electric eels (Electrophorus electricus) by "fishing with horses" [von Humboldt A (1807) Ann Phys 25:34-43]. The strategy was to herd horses into a pool containing electric eels, provoking the eels to attack by pressing themselves against the horses while discharging. Once the eels were exh...

2012
Rasoul Mohammadi Seyed-Jalal Seyed-Shenava Khalil Valipour

In this paper, static and expansion planning of electric power distribution networks were studied using a novel Particle Swarm Optimization (PSO) algorithm under load uncertainty is presented. This paper consists of two sections. At first by using a novel PSO algorithm, static and mono objective planning was solved for electric distribution network. This work involves both network topology and ...

2013
Narapareddy Rama Rao

In this paper, the trajectories of free conducting particles of various sizes inside a three phase common enclosure Gas Insulated Busduct(GIB) are simulated by solving the nonlinear second order differential equation of particle motion iteratively by using RK 4 Order Method. Compressed Gas Insulated Substations(GIS) consists of a conductor supported by spacers inside of Sulphur hexafluoride gas...

2013
Jing Wu Bingnan Wang William S. Yerazunis Koon Hoo Teo

In this paper, a wireless power transfer system (WPT) with magnetically coupled resonators is studied. The idea to use a reflector to enhance the coupling coefficient and the transfer efficiency is proposed and analyzed. Perfect magnetic conductor (PMC) was used in numerical calculations in order to study the performance of a reflector. In the WPT system we studied, efficiency is increased from...

2007
Rafael B. Dinner Kathryn A. Moler D. Matthew Feldmann M. R. Beasley

Various local probes have been applied to understanding current flow through superconducting films, which are often surprisingly inhomogeneous. Here, we show that magnetic imaging allows quantitative reconstruction of both current density J and electric field E resolved in time and space in a film carrying subcritical ac current. Current reconstruction entails inversion of the Biot-Savart law, ...

2015
Qiang Zhou Wei He Song-nong Li Xingzhe Hou

Voltage sensors are an important part of the electric system. In service, traditional voltage sensors need to directly contact a high-voltage charged body. Sensors involve a large volume, complex insulation structures, and high design costs. Typically an iron core structure is adopted. As a result, ferromagnetic resonance can occur easily during practical application. Moreover, owing to the mul...

2007
M. A. Furman

Many applications in beam physics, particularly those concerning transverse beam dynamics, call for an approximate computation of the transverse electric field produced by the charge distribution of the beam, namely the field components in the plane perpendicular to the beam motion. Mathematically, this approximation becomes exact in the limit of an infinitely long charge distribution that is a...

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