نتایج جستجو برای: diode

تعداد نتایج: 20961  

2017

Due to the high sensitivity, nearly linear response, and easy availability, we will use a 1N4148 diode for the temperature transducer in our measurements. The current conducted through an ideal diode is described by the Shockley ideal diode equation: I D = I S exp q V D n k B T − 1 where q is the electron charge, k B is Boltzmann's constant, T is the temperature of the diode junction, and V D i...

2017

Due to the high sensitivity, nearly linear response, and easy availability, we will use a 1N4148 diode for the temperature transducer in our measurements. The current conducted through an ideal diode is described by the Shockley ideal diode equation: I D = I S exp q V D n k B T − 1 where q is the electron charge, k B is Boltzmann's constant, T is the temperature of the diode junction, and V D i...

2017

Due to the high sensitivity, nearly linear response, and easy availability, we will use a 1N4148 diode for the temperature transducer in our measurements. The current conducted through an ideal diode is described by the Shockley ideal diode equation: I D = I S exp q V D n k B T − 1 where q is the electron charge, k B is Boltzmann's constant, T is the temperature of the diode junction, and V D i...

L Gachkar L Nabaei S Sami Kermani

Background: Numerous lasers are currently available for hair removal. Objective: To study the efficacy of a pulsed diode laser for removing unwanted hair. Patients and Methods: In this quasi-experimental clinical trial, 39 patients with unwanted hairs on chin referred to Novin-Didegan Laser Center in Tehran were treated with a diode laser system (Palomar, 810nm). Fluences ranging from 40 to 64 ...

Journal: :journal of lasers in medical sciences 0
reza amid dental research center, department of periodontics, shahid beheshti university of medical sciences, tehran, iran mahdi kadkhodazadeh dental research center, department of periodontics, shahid beheshti university of medical sciences, tehran, iran mohammadreza talebi ardakani dental research center, department of periodontics, shahid beheshti university of medical sciences, tehran, iran somayeh hemmatzadeh school of dentistry, department of periodontics, shahid beheshti university of medical sciences, tehran, iran soheil refoua school of dentistry, department of periodontics, shahid beheshti university of medical sciences, tehran, iran parastoo iranparvar school of dentistry, department of periodontics, shahid beheshti university of medical sciences, tehran, iran

introduction: the purpose of this case report is to analyze the results of vestibuleplasty around an over-denture based on dental implants to determine the evidence on the effectiveness of laser-assisted surgery and soft tissue management in implant dentistry. case report: the patient in this case report was a 57 year- old male who was completely edentulous, with a mandibular over denture based...

1997
WILLIAM F. GABRIEL

An analysis of tnmel-diode low-level detection is presented for the purpose of explaining some of the unusual detection characteristics that occur under certain hias conditions. For example, in the vicinity of its inflection hias point, a tmmel diode exhibits a discriminator-like rectification behavior with two sensitivity peaks. When biased at one of these peaks, the diode is capable of unusua...

2000
Peter H. Chen Sunil Malkani Chun-Mou Peng James Lin

This paper describes three ways to fix antenna problems: (1) diode dropping, (2) jumper insertion, and (3) diode dropping with extension wires. Basic principles of these methods are compared and results are presented. Diode structures, SPIC simulation, and diode slicing are also discussed in this paper.

2011
E.M.G. Rodrigues R. Melício J.P.S. Catalão

This paper focuses on single-diode photovoltaic cell models. Comprehensive simulation studies are carried out in order to adequately assess temperature dependence, solar radiation change, diode ideality factor and series resistance influence. A comparison between an ideal model single-diode solar cell and a model of single-diode solar cell with a series resistance is also presented. Finally, co...

2016
Md. Nazmul Islam Sarkar

In this paper, all the models of PV cell, namely ideal single-diode model, single-diode Rs model, single-diode Rp model, the two-diode model, and the three-diode model, have been discussed. SPICE simulation is done to evaluate the impact of model parameters on the operation of PV cell. The effects of the parameters are discussed. The photocurrent, IL, is proportional to irradiance, and the seri...

Journal: :journal of dentistry, tehran university of medical sciences 0
zahra bahrololoomi associate professor, department of pediatric dentistry, faculty of dentistry, member of social determinants of oral health research center, shahid sadoughi university of medical sciences, yazd, iran. malihe lotfian department of pediatric dentistry, faculty of dentistry, shahid sadoughi university of medical sciences, yazd, iran.

laser irradiation has been suggested as an adjunct to traditional caries prevention methods. but little is known about the cariostatic effect of diode laser and most studies available are on permanent teeth.the purpose of the present study was to investigate the effect of diode laser irradiation combined with topical fluoride on enamel surface microhardness.forty-five primary teeth were used in...

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