نتایج جستجو برای: diode

تعداد نتایج: 20961  

2015
G P Willering

During quench tests in 2011 variations in resistance of an order of magnitude were found in the diode by-pass circuit of the main LHC magnets. An investigation campaign was started to understand the source, the occurrence and the impact of the high resistances. Many tests were performed offline in the SM18 test facility with a focus on the contact resistance of the diode to heat sink contact an...

Journal: :Ghana medical journal 2013
I N Ize-Iyamu B D Saheeb B E Edetanlen

AIM To compare the use of the 810nm diode laser with conventional surgery in the management of soft tissue mucogingival problems associated with orthodontic treatment. METHODS Orthodontic patients requiring different soft tissue surgical procedures were randomly assigned to receive conventional surgery or soft tissue diode laser, (wavelength 810 nm). MAIN OUTCOME MEASURES Parameters documen...

2008
Yasuhiro Igarashi Jerzy Górecki Joanna N. Górecka Y. Igarashi J. Górecki J. N. Górecka

Excitable chemical system can process information coded in excitation pulses. Here we discuss the simplest realization of a chemical signal diode that transmits pulses in one direction only. The construction of such diode just requires a geometrical combination of three areas characterized by different excitability. The proposed construction of chemical signal diode has been tested in numerical...

2004
Cory J. Hill

The development of mid-IR semiconductor diode lasers based on type-I1 interband cascade structures is presented. How these diode lasers can be developed to meet the requirements in chemical sensing applications is discussed.

2015
Zixu James Zhu Zixu Zhu Garret Moddel

The final copy of this thesis has been examined by the signatories, and we find that both the content and the form meet acceptable presentation standards of scholarly work in the above mentioned discipline Thesis directed by Prof. Garret Moddel Optical rectennas, which are micro-antennas to convert optical-frequency radiation to alternating current combined with ultrahigh-speed diodes to rectif...

Ehsan Birang, Mehrnoosh Tavakoli, Reza Birang,

Objectives The use of lasers for the treatment of periimplant hard and soft tissues is now refmore than ever before. Achieving bone integrity. The aim of this study is to evaluate the effects of Er:YAG, 980 nm and 810 nm diode lasers irradiation on biocompatibility of SLA titanium disks by SaOs2 cells morphology. Methods In this in-vitro study sixty sterile titanium disks with SLA surface were...

Journal: :journal of lasers in medical sciences 0
somaye mazarei sotoode department of oral medicine, shahid beheshti university of medical sciences, tehran, iran somayyeh azimi department of oral medicine, shahid beheshti university of medical sciences, tehran, iran sayed alinaghi taheri school of chemistry, shahrood university of technology, shahrood, iran mohammad asnaashari department of endodontics, shahid beheshti university of medical sciences, tehran, iran hamidreza khalighi department of oral medicine, shahid beheshti university of medical sciences, tehran, iran somayeh rahmani department of oral medicine, shahid beheshti university of medical sciences, tehran, iran

introduction: the role of laser in conservative management of oral disease is well established. laser procedures are common in the fields of oral surgery, implant dentistry, endodontic, and periodontic therapy. case: this case series describes the use of diode laser for the excision of oral exophytic lesions. all the patients attended the oral medicine department of shahid beheshti university o...

Journal: :journal of lasers in medical sciences 0
mohammad asnaashari department of endodontics, school of dentistry, shahid beheshti university of medical sciences, tehran, iran masoumeh mehdipour department of oral and maxillofacial medicine, school of dentistry, shahid beheshti university of medical sciences, tehran, iran faranak moradiabbasabadi department of oral and maxillofacial pathology, faculty of dentistry, qom university of medical sciences, qom, iran saranaz azari-marhabi department of oral and maxillofacial medicine, faculty of dentistry, qom university of medical sciences, qom, iran

introduction: pyogenic granuloma (pg) is one of the inflammatory hyperplasia seen in the oral cavity. it is a reactional response to minor trauma or chronic irritation. the most common treatment of pg is surgical excision but alternative approaches such as laser excision have also been proposed especially for pediatric patients. case report: herein, we present a case of gingival pyogenic granul...

2009
Wolfgang Horn

The wide range of available wavelengths, high brightness and increasing reliability are breaking new ground for diode lasers. Material processing with high power diode lasers in industrial manufacturing is getting more and more important. In automotive, medical device and also solar cell production they are important tools for automated production. Closed-loop temperature control by integrated ...

Journal: :iranian journal of radiation research 0
m. allahverdi department of medical physics, tehran university of medical sciences, tehran, iran gh. geraily department of medical physics, tehran university of medical sciences, tehran, iran m. esfehani departments of radiology, iran university of medical sciences, tehran, iran a. sharafi department of radiotherapy and oncology, cancer institute, tehran university of medical sciences, tehran, iran a. shirazi department of medical physics, tehran university of medical sciences, tehran, iran

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 calibrate diod...

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