نتایج جستجو برای: carbon dioxide laser pulse

تعداد نتایج: 565177  

اخیانی, مینا, جهانگیری, فاضل, رضایی پندری, محمد, مسعودی, رضا, نیکنام, علیرضا,

In this paper, electron acceleration in the field of laser pulse is investigated. To limit the interaction region for electron pulse, which is required for acceleration, a new method is presented based on the injection of electron on temporal peak of the laser pulse. In this method, the electron is provided by a plasma source and is steered inside the laser field by utilizing the magnetic field...

Journal: :Pediatric dentistry 1999
R D Elliott M W Roberts J Burkes C Phillips

PURPOSE The purpose of this study was to evaluate the response of the human primary pulp to the carbon dioxide laser and formocresol for vital pulp therapy. METHODS Fifteen healthy children with intact, caries-and-restoration-free, contralateral primary cuspids with at least two-thirds of the roots remaining who were scheduled for orthodontic extraction were randomly assigned to pulpotomy tre...

پایان نامه :دانشگاه آزاد اسلامی واحد علوم پزشکی تهران - دانشکده پزشکی 1390

پوست یکی از بزرگترین ارگانهای بدن می باشد که 16 درصد وزن آن را تشکیل می دهد که اولین سد دفاعی رادرمقابل عوامل بیماری زاومحیطی تشکیل می دهد.پوست ازلحاظ بافت شناسی از3لایه اصلی اپیدرم،درم وهیپودرم تشکیل شده است.باافزایش سن قوام وشکل ظاهری پوست تغییر پیدامی کند. با شروع فرآیندپیری پوست،چین و چروک هادرناحیه اطراف چشم و پیشانی و دوردهان پدیدار می شوند و باگذرزمان وافزایش سن این حالات شدیدترمی شودبا ...

Journal: :Dermatologic therapy 2016
Andrea Paradisi Francesco Ricci Paolo Sbano

Granuloma faciale (GF), also known as "eosinophilic granuloma," is a rare benign leukocytoclastic vasculitis which most commonly occurs on the face of middle-aged Caucasian males. Clinically, GF appears as single or multiple, slowly growing, reddish-brown papules, nodules or plaques which may be cosmetically unpleasant. Its pathogenesis is unknown and GF is notoriously resistant to treatments. ...

Journal: :In vivo 2013
Joachim Schneider Melanie Funk

BACKGROUND/AIM The Global initiative for chronic obstructive lung diseases (GOLD) reports a staging system for chronic obstructive pulmonary disease (COPD) based on airflow limitations at rest. Cardiopulmonary exercise testing (CPET) is used in surveys to determine the remaining working capacity concerning the degree of disability and the disability benefit payment after rehabilitation in patie...

Journal: :journal of lasers in medical sciences 0
reza amid 1deptartment of periodontics, school of dentistry, shahid beheshti university of medical sciences, tehran, iran 2dental research center, research institute of dental sciences, school of dentistry, shahid beheshti university of medical sciences, tehran, iran gholamali gholami deptartment of periodontics, school of dentistry, shahid beheshti university of medical sciences, tehran, iran masoud mojahedi deptartmen of laser, school of dentistry, shahid beheshti university of medical sciences, tehran, iran maryam aghalou deptartment of periodontics, school of dentistry, shahid beheshti university of medical sciences, tehran, iran mohsen gholami private practice, tehran, iran mahdieh mirakhori dental research center, research institute of dental sciences, school of dentistry, shahid beheshti university of medical sciences, tehran, iran

introduction: the efficacy of erbium-doped yttrium aluminum garnet (er:yag) laser for root debridement in comparison with curettes has been the subject of many recent investigations. considering the possibility of chemical and ultra-structural changes in root surfaces following laser irradiation, this study sought to assess the effects of scaling and root planing (srp) with curettes and er:yag ...

Journal: :Physical review letters 2009
C B Madsen L B Madsen S S Viftrup M P Johansson T B Poulsen L Holmegaard V Kumarappan K A Jørgensen H Stapelfeldt

We demonstrate that strong laser pulses can induce torsional motion in a molecule consisting of a pair of phenyl rings. A nanosecond laser pulse spatially aligns the carbon-carbon bond axis, connecting the two phenyl rings, allowing a perpendicularly polarized, intense femtosecond pulse to initiate torsional motion accompanied by an overall rotation about the fixed axis. We monitor the induced ...

Journal: :Nippon Laser Igakkaishi 2017

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