نتایج جستجو برای: pulsed current

تعداد نتایج: 809585  

2004
Kaustav Banerjee Jorge A. Kittl

Characterization and modeling of high current conduction in Ti& and COSz films formed on n+ Si and n+ polySi under DC and pulsed stress conditions is reported for the first time. High current conductance of silicides is shown to be strongly affected by the technology and process conditions. The non-linear I-V characteristics of silicide films under DC and pulsed high current stress has been mod...

Journal: :Journal of dermatological science 2006
Stefania Pacini Tiziana Punzi Massimo Gulisano Marco Ruggiero

Hyaluronic acid (HA) is a natural glycosaminoglycan (GAG) used in treatment and prevention of different skin diseases and as a filler agent for improving wrinkles, scars, or increasing volumes [1]. Because of chemical structure, HA has to be injected repeatedly for many months [2], in tens or hundreds of sites [3], by experienced operators [4]. This feature contrasts with the needs of today’s b...

2015
Xinfang Zhang Rongshan Qin

A controlled motion of electrically neutral microparticles in a conductive liquid at high temperatures has not yet been realized under the uniform direct electric current field. We propose a simple method, which employs pulsed direct current to a conductive liquid metal containing low-conductivity objects at high temperature. The electric current enables the low-conductivity particles to pass f...

1990
R. Koontz K. Fant A. Vlieks

A 1.9 microperveance beam diode has been constructed to test high current density cathodes for use in klystrons. Several standard and specially coated dispenser cathodes are being tested. Results of tests to date show average cathode current densities in excess of 25 amps/cm, and maximum electric field gradients of more than 450 kV/ cm. for pulses of the order of 1 /'sec.

Chalamalasetti Srinivasa Rao Damera Nageswara Rao Kondapalli Siva Prasad

Austenitic stainless steel sheets have gained wide acceptance in the fabrication of components, which require high temperature resistance and corrosion resistance such as metal bellows used in expansion joints in aircraft, aerospace and petroleum industries. In the case of single pass welding of thinner sections of this alloy, Pulsed Current Micro Plasma Arc Welding (PCMPAW) has been found bene...

2002
Kaustav Banerjee Chenming Hu Jorge A. Kittl

Characterization and modeling of high current conduction in TiSi2 and CoSi2 films formed on n+ Si and n+ polySi under DC and pulsed stress conditions is reported for the first time. High current conductance of silicides is shown to be strongly affected by the technology and process conditions. The non-linear I-V characteristics of silicide films under DC and pulsed high current stress has been ...

In this study, an attempt was made to minimize the corrosion rate and maximize pitting potential of dissimilar metal welded joints of A387-Gr91/AISI316 steels. Process parameters of the pulsed current gas tungsten arc welding (PCGTAW) including of peak current (P), background current (B), pulse frequency (F), and on time percentage (O) were chosen as the influencing factors on corrosion behavio...

Journal: :Actas dermo-sifiliograficas 2015
A J González-Rodríguez R Lorente-Gual

Intense pulsed light (IPL) systems have evolved since they were introduced into medical practice 20 years ago. Pulsed light is noncoherent, noncollimated, polychromatic light energy emitted at different wavelengths that target specific chromophores. This selective targeting capability makes IPL a versatile therapy with many applications, from the treatment of pigmented or vascular lesions to ha...

2017
Ali Sophian Guiyun Tian Mengbao Fan

Pulsed eddy current (PEC) non-destructive testing and evaluation (NDT&E) has been around for some time and it is still attracting extensive attention from researchers around the globe, which can be witnessed through the reports reviewed in this paper. Thanks to its richness of spectral components, various applications of this technique have been proposed and reported in the literature covering ...

2011
Daniela GOMBARSKA Milan SMETANA

This paper deals with response signals processing in eddy current non-destructive testing. Non-sinusoidal excitation is utilized to drive eddy currents in a conductive specimen. The response signals due to a notch with variable depth are calculated by numerical means. The signals are processed in order to evaluate the depth of the notch. Wavelet transformation is used for this purpose. Obtained...

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