نتایج جستجو برای: q switched laser

تعداد نتایج: 324361  

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

هدف: این مطالعه به منظور بررسی و مقایسه اثر q-switched nd yag laser و erbium laser در درمان ضایعات پیگمانته انجام شده است. روش مطالعه: 116 فرد مبتلا به ضایعات پیگمانته از نوع فرکل و خال وارد مطالعه شدند که 58 مورد با استفاده از q-switched nd yag laser و 58 مورد با لیزر erbium درمان شدند و در نهایت میزان اثربخشی (از بین رفتن کامل ضایعات) در دو گروه تعیین و مقایسه گردید. یافته ها: در این مطالعه...

Journal: :journal of lasers in medical sciences 0
seyed alireza ghavam laser application in medical sciences research center, shahid beheshti university of medical sciences, tehran, iran saeed aref tehran university of medical sciences, tehran, iran ezedin mohajerani laser and plasma research institute, shahid beheshti university, tehran, iran mohammad reza shidfar department of medical parasitology and mycology, tehran university of medical sciences, tehran, iran hamideh moravvej skin research center, shahid beheshti university of medical sciences, tehran, iran

introduction: trichophyton rubrum is one of the most common species of dermatophytes which affects superficial keratinous tissue. it is not especially virulent but it can be responsible for considerable morbidity. although there are different therapeutic modalities to treat fungal infections, clinicians are searching for alternative treatment because of the various side effects of the present t...

Mohammad Radmanesh, Ramin Radmanesh

Background: Although cryotherapy has been reported as atechnique for depigmenting residual pigmented patches inpatients with universal vitiligo, Q-switched Nd-YAG lasershave not yet been used for this purpose. The aim of this studywas to compare the efficacy of cryotherapy with that of 532nmQ-switched Nd-YAG laser therapy for depigmentation in patientswith universal vitiligo.Method: Six adult p...

Dadras Mohammad Shahidi Farshi Hamideh Moravej Sadiqha Afshin Toosi Parviz

Background and aim: It is possible to use light sources suxh as lasers to destruct melanosomes and treat pigmented skin lesions. One of the most commonly used laser systems is Q switched ruby laser with a wave-length of 694 nm. This study was performed to evaluate the efficacy of the Q switched ruby laser in the treatment of pigmented skin lesions including lentigines (simplex or solar) and caf...

Journal: :journal of lasers in medical sciences 0
behrooz barikbin laser application in medical sciences research center, skin research center, shahid beheshti medical university, tehran, iran somayeh hejazi skin research center, shahid beheshti medical university, tehran, iran azin ayatollahi skin research center, shahid beheshti medical university, tehran, iran mehdi qeisari skin research center, shahid beheshti medical university, tehran, iran

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Journal: :journal of lasers in medical sciences 0
mohamed abdelaziz hamdy ophthalmic department, national institute of laser enhanced science, cairo university, egypt dina fouad ghoneim ophthalmic department, national institute of laser enhanced science, cairo university, egypt salwa ahmed abdelkawi department of vision science, biophysics and laser science unit, research institute of ophthalmology, giza, egypt. ibraheim mohyeldin taher ophthalmic department, national institute of laser enhanced science, cairo university, egypt ahmed medhat abdel- salam ophthalmic department, national institute of laser enhanced science, cairo university, egypt

introduction: recurrent corneal erosion occurs when the wounded corneal epithelium failed to adhere to the underlying stroma. therefore, this work aimed to assess the effect of treatment of corneal injury using q- switched nd:yag laser.  method: twenty one new zealand male rabbits weighing 2-2.5 kg and 3 months old were classified into three main groups. the control group: did not received any ...

Journal: :Optics express 2012
Jianfeng Li Tomonori Hu Stuart D Jackson

A gain-switched laser transition, of a two-laser-transition cascade laser, that is driven by the adjacent laser transition which is Q-switched is demonstrated using a Ho3+-doped fluoride fiber laser. Q-switching the 5I6 → 5I7 transition at 3.002 µm produces stable gain-switched pulses from the 5I7 → 5I8 transition at 2.074 µm; however, Q-switching the 5I7 → 5I8 transition produced multiple gain...

Journal: :Journal of the Optical Society of America B 2013

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید بهشتی - دانشکده علوم 1386

چکیده ندارد.

2008
M. Alshikh Khalil

In recent years, great attention has been paid to high peak power all-solid-state pulsed blue-green lasers [1–4] for some applications such as spectroscopy, display, optical data storage, coherent telecommunications, remote sensing, medicine, etc. Such lasers are generally realized by intracavity or external cavity frequency doubling of cw laser-diode (LD)-pumped solid-state Q-switched Nd-doped...

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