نتایج جستجو برای: diode

تعداد نتایج: 20961  

Journal: :journal of lasers in medical sciences 0
vinay kumar reddy kundoor department of oral medicine and radiology, mamata dental college and hospital, khammam, telangana, india ashwini patimeedi department of oral medicine and radiology, mamata dental college and hospital, khammam, telangana, india shameena roohi department of oral medicine and radiology, mamata dental college and hospital, khammam, telangana, india kotya naik maloth department of oral medicine and radiology, mamata dental college and hospital, khammam, telangana, india sunitha kesidi department of oral medicine and radiology, mamata dental college and hospital, khammam, telangana, india geetha kumari masabattula department of oral maxillofacial pathology, mamata dental college and hospital, khammam, telangana, india

introduction: laser dentistry is a one of the upcoming advanced treatment modality for oral mucosal lesions. diode laser is a soft tissue laser that has found much acceptance in all branches of dentistry. available compact size and feasibility has render diode laser an enhanced tool for today’s clinical practice. the aim of this study is to determine the efficacy and safety of diode laser for t...

Elham Tabatabee Ghomshe, Ladan Ranjbar Omrani, Nasim Chiniforush, Parisa Golkar Taft, Shiva Jafarnia,

Background and Aim: Bleaching can improve the color of restorative materials and resolve problems related to discoloration or color mismatch. This study evaluated the effect of in-office bleaching method in conjunction with two different laser wavelengths on color change of two types of glass-ionomer restorative materials (light-cure and self-cure). Materials and Methods: In this experimenta...

بقائی نژاد, مجید, حاجی بدلی, عسگر, فرزی, غلامعلی,

In this research, Schottky diode with Al-PANI/MWCNT-Au structure was fabricated using spin coating of composite polymer and physical vapor deposition of metals. For this purpose, a thin layer of gold was coated on glass and then composite of polyaniline/multi-walled carbon nanotube was synthesized and spin-coated on gold layer. Finally, a thin layer of aluminum was coated on polymer layer. The ...

Journal: :Nano letters 2011
Chang-Hua Liu Chung-Chiang Wu Zhaohui Zhong

We demonstrate a fully tunable diode structure utilizing a fully suspended single-walled carbon nanotube. The diode's turn-on voltage under forward bias can be continuously tuned up to 4.3 V by controlling gate voltages, which is ∼6 times the nanotube band gap energy. Furthermore, the same device design can be configured into a backward diode by tuning the band-to-band tunneling current with ga...

A. Sharafi, A. Shirazi, Gh. Geraily, M. Allahverdi, M. Esfehani,

Background: Total Body Irradiation (TBI) is different from standard radiotherapy in many aspects, so it is not easy to predict the delivered dose to the patient under TBI treatment. Diode dosimetry procedures for surface dose reading can help to define variations of the actually delivered dose from the prescribed one. The aim of this study was to describe the measurements made to calib...

2005
B. L. Volodin S. V. Dolgy E. D. Melnik E. Downs J. Shaw V. S. Ban

Volume Bragg gratingTM (VBGTM) technology has been shown to improve spectral characteristics of the high-power laser diodes and arrays. We review the recent advances in VBG technology that lead to better spectral performance as well as improvements in spatial brightness of the high-power laser diode arrays. The VBG technology has been applied to manufacturing of high-power laser diode arrays su...

2008
Suhaidi Shafie Shoji Kawahito Shinya Itoh

A dynamic range expansion technique for CMOS image sensors with dual charge storage in a pixel and multiple sampling technique is presented. Each pixel contains a photodiode and a storage diode which is connected to the photodiode via a separation gate. The sensitivity of the signal charge in the storage diode can be controlled either by a separation gate which limits the charge to flow into th...

2011
Stephane Schilt Frank K. Tittel Konstantin P. Petrov

6 Conclusion 23 Acknowledgments 23 Abbreviations and Acronyms 23 Related Articles 24 References 24 Modern diode laser spectroscopy is becoming an important and a more widely used tool for detection and measurement of trace gases. The change is driven by the recent advances in diode laser technology and diode laser frequency conversion techniques, which now push the limits of emission wavelength...

Journal: :journal of lasers in medical sciences 0
reza fekrazad laser research center in medical sciences (lrcms), aja university of medical sciences- laser research center of dentistry (lrcd), school of dentistry, tehran university of medical sciences, tehran, iran katayoun am kalhori laser research center in medical sciences (lrcms), aja university of medical sciences- laser research center of dentistry (lrcd), school of dentistry, tehran university of medical sciences, tehran, iran nasim chiniforush laser research center of dentistry (lrcd), school of dentistry, tehran university of medical sciences, tehran, iran

vascular lesions rise from abnormalities in blood vessels or endothelial proliferation . capillary hemangiomas are formed by small capillaries surrounded by a layer of endothelial cells in a connective tissue stroma . various treatments are used for these conditions like excisional surgery , sclerotherapy, and recently laser irradiation. in this case study, we report successful treatment of int...

Journal: :journal of lasers in medical sciences 0
mohammad asnaashari department of endodontic, school of dentistry, shahid beheshti university of medical sciences, tehran, iran saranaz azari-marhabi department of oral medicine, school of dentistry, shahid beheshti university of medical sciences, tehran, iran somayeh alirezaei department of oral medicine, school of dentistry, shahid beheshti university of medical sciences, tehran, iran nikoo asnaashari laser application in medical sciences research center, shahid beheshti university of medical sciences, tehran, iran

introduction: several treatment options have been introduced for removal of gingival hyperplasic lesions, but using diode lasers have many advantages such as less bleeding, time saving, better shaping, improved healing and less complication for the patients. case: a 15-year-old girl with multiple fibroma-like lesions in the oral cavity, who had a medical history of tuberous sclerosis, was selec...

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