نتایج جستجو برای: he laser

تعداد نتایج: 338897  

Journal: :Journal of Physics B: Atomic, Molecular and Optical Physics 1999

Journal: :The Alpha omegan 2008
Steven D Spitz

Steven D. Spitz, is a Prosthodontist and has just celebrated his 12-year anniversary as owner and practitioner of Smileboston Cosmetic and Implant Dentistry. He received his undergraduate degree at Tufts University School of Dental Medicine, attended a general practice residency in Miami in the Jackson Memorial Hospital/VA program and received his prosthodontic training in the Harvard School of...

Journal: :iranian red crescent medical journal 0
songtao xu clinical department, luohe medical college, luohe, china weixin sheng department of urology, the first people’s hospital of taicang, taicang, china yufa qiu department of neurosurgery, the first people’s hospital of taicang, taicang, china jianguo wang clinical department, luohe medical college, luohe, china; clinical department, luohe medical college, luohe, china. tel: +86-39552385610, fax: +86-3952127842

conclusions bladder perforation and stones are rare examples of complications in v-p surgical procedures. controlling the effective length of the terminal v-p shunt and modifying it appropriately can effectively reduce these complications. case presentation we report on a 38-year-old male who had hydrocephalus and v-p shunt for 12 years. two years ago, he found himself with recurrent urinary tr...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت معلم تهران - دانشکده علوم 1378

لیزر مولکولی فلورین در کوتاهترین طول موج (158 nm) با توان بالا، گسیل می کند و در فرایند نورکندگی نیز کاربردهای ارزشمندی دارد، که در فشارهای بالای اتمسفر (2-10atm) عملکرد لیزری آن گزارش شده است . در مقابل، لیزری اتمی فلورین در ناحیه سرخ و فروسرخ نزدیک در چندین خط گسیل دارد و از نظر سینتیکی یک لیزر منحصر بفرد بشمار می آید زیرا علاوه بر گسیل در تمامی فشارها (از چند تور تا چند اتمسفر) دارای قابلیت ...

Journal: :The Astrophysical Journal 1968

2005

Much of our expectation of the future is based on a linear extrapolation from the present. However history tells us time and again that it’s the nonlinearities that make the big differences in predicting the future. New technologies like smart materials, MEMS, micro adaptive flow control, and nanotechnology all have the potential to have a big influence on the future of aeronautics. A forward-l...

Ahmad Amjadi Farideh Motaghian

Introduction: This work is dedicated to investigating the effect of applying polarized He-Ne laser beam (λ= 632 nm, 10 mW, 1 j/cm2) with polarization direction perpendicular to the stress direction on the tensile strength of biological tissue (elasticity index of the Pleura 10*4*0.1 mm).   Method and Material: The optimized characteristics of the laser illumi...

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