نتایج جستجو برای: low power

تعداد نتایج: 1606893  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ارومیه 1377

‏‎applications such as high definition viedeo reproduction, portable computers, wireless, and multimedia demand, and ever-increasing need for ligh-frequency high-resolution and low-power analog-to-digital converters. flash, two-step flash, and pipeline convertors are fast but consume large amount of power and require large area. to overcome these problems, successive approximation converter blo...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی خواجه نصیرالدین طوسی - دانشکده مهندسی برق و کامپیوتر 1391

many mobile and off-grid devices include electronics and other electrical consumers like servo drives, which need a quite low supply power. since the price for photovoltaic modules drops continuously, photovoltaic power supply is interesting in more and more applications. in solar powered systems, a battery is needed to store energy for the night and cloudy periods. the power electronics of suc...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه یزد 1389

در این پایان نامه به کاربرد روش عددی شبکه بولتزمن در شبیه سازی جریان سیال غیر نیوتنی پرداخته شده است. این رساله ضمن ارایه معرفی مختصری در راجع به روش شبکه بولتزمن، برخی از معادلات ساختاری که برای سیالات غیر نیوتنی ارایه شده است را معرفی می‏نماید. در این بین، معادلات ساختاریی که جهت شبیه سازی سیالات غیر نیوتنی عمومیت بیشتری دارند مورد توجه قرارگرفته‏اند و در صورت امکان معادله حل تحلیلی این معاد...

Journal: :journal of advances in computer research 0
mehdi bagherizadeh department of computer engineering, science and research branch, islamic azad university, tehran, iran mohammad eshghi faculty of electrical engineering, shahid beheshti university. g.c., tehran, iran

scaling challenges and limitations of conventional silicon transistors have led the designers to apply novel nano-technologies. one of the most promising and possible nano-technologies is cnt (carbon nanotube) based transistors. cnfet have emerged as the more practicable and promising alternative device compared to the other nanotechnologies.  this technology has higher efficiency compared to t...

Journal: :iranian endodontic journal 0
mehdi vatanpour department of endodontics, dental school, islamic azad university, and member of iranian center for endodontic research, tehran, iran maryam javidi department of endodontics, dental school, mashad university of medical sciences, mashad, iran mina zarei department of endodontics, dental school, mashad university of medical sciences, mashad, iran shiva shirazian private specialist in oral medicine

external root resorption may be an uncontrolled phenomenon, and the most known interventions have no effect. even progressive external root resorption may not be controlled by long term ca(oh)2 therapy. currently, there are no treatment options for vital tooth that suffer from root resorption. this invasive resorption can lead to extraction of the tooth. the use of new technologies such as low ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز 1389

در این پایان نامه به مطالعه عددی رفتار نانوسیالات غیرنیوتنی در مدلسازی صحیح انتقال حرارت این نوع سیالات توسط نرم افزار fluent پرداخته شده است. در کارحاضر از مدل توانی ( (power low جهت تعیین رفتار غیرنیوتنی ویسکوزیته سیال پایه استفاده شده است. تنش برشی سیال غیرنیوتنی تابعی از نرخ برشی درنظرگرفته شده است. در این مطالعه به دلیل وجود اصطکاک بین ذرات نانو و سیال غیرنیوتنی از مدل دوفازی مخلوط بادرنظر...

Journal: :journal of advances in computer research 0
meysam mohammadi department of computer engineering, ayatollah amoli branch, islamic azad university, amol, iran yavar safaei mehrabani independent researcher

full adder cell is often placed in the critical path of other circuits. therefore it plays an important role in determining the entire performance of digital system. moreover, portable electronic systems rely on battery and low-power design is another concern. in conclusion it is a vital task to design high-performance and low-power full adder cells. since delay opposes against power consumptio...

Journal: :trauma monthly 0
kamal seyed forootan hazrate fateme hospital, iran university of medical sciences, tehran, ir iran; hazrate fateme hospital, iran university of medical sciences, tehran, ir iran. tel: +98-9121213716 siamak farokh forghani hazrate fateme hospital, iran university of medical sciences, tehran, ir iran seyed pezhman madani hazrate fateme hospital, iran university of medical sciences, tehran, ir iran hamid karimi estahbanati hazrate fateme hospital, iran university of medical sciences, tehran, ir iran nazilla sadat seyed forootan biology department, california state university, northridge, united state of america

conclusions accordingly, laser therapy in our protocol seemed to affect some of the nerve growth parameters, mostly on motor rather than sensory fibers. results in the two -point discrimination- test, there was no significant difference between the two groups in the thumbs but a significant improvement was observed in the index finger of the lt group. improvement of muscular examinations such a...

Journal: :journal of lasers in medical sciences 0
maryam basirat oral medicine department, guilan university of medical sciences, rasht, iran

it is the output power and density of the lasers which determine whether a laser is a low or high-power one. if the density is less than 670mw/cm2, the laser is called a low power one. the output power of these lasers is usually less than 250mw. they use different mechanisms to accelerate wound healing such as: cellular biostimulation, improvement of circulation, vasodilation, analgesic and ant...

Journal: :acta medica iranica 0
m.r. hadian b. attarbashi moghadam

there is just one study about the effects of 830 nm low power laser (lpl) on conduction velocity of sural nerve in human. considering the fact that the sural nerve is a pure sensory nerve, therefore, for determining the effect of lpl on electrophysiological parameters of the nerve in human, this study was carried out as a base for further basic and clinical researches. thirty eight normal volun...

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