نتایج جستجو برای: Oxide pocket

تعداد نتایج: 193806  

This study investigates geometrical variability on the sensitivity of the junctionless tunneling field effect transistor (JLTFET) and Heterostructure JLTFET (HJLTFET) performance. We consider the transistor gate dielectric thickness as one of the main variation sources. The impacts of variations on the analog and digital performance of the devices are calculated by using computer aided design (...

This study investigates geometrical variability on the sensitivity of the junctionless tunneling field effect transistor (JLTFET) and Heterostructure JLTFET (HJLTFET) performance. We consider the transistor gate dielectric thickness as one of the main variation sources. The impacts of variations on the analog and digital performance of the devices are calculated by using computer aided design (...

2008
Koki Tsukamoto Kazuhiko Fukui

A unique enzyme mechanism named a bio-scale engine was proposed for a nitric oxide reductase, cytochrome P450nor (P450nor). P450nor has some structural similarities with a combustion engine: the heme pocket, the heme and NADH correspond to a combustion chamber, a piston head, and a spark plug, respectively. Each putative step of this reaction occurred in the heme pocket was characterized using ...

2008
Elsa D. Garcin Andrew S. Arvai Robin J. Rosenfeld Matt D. Kroeger Brian R. Crane Gunilla Andersson Glen Andrews Peter J. Hamley Philip R. Mallinder David J. Nicholls Stephen A. St-Gallay Alan C. Tinker Nigel P. Gensmantel Antonio Mete David R. Cheshire Stephen Connolly Dennis J. Stuehr Anders Åberg Alan V. Wallace John A. Tainer Elizabeth D. Getzoff

Nitric oxide synthase (NOS) enzymes synthesize nitric oxide, a signal for vasodilatation and neurotransmission at low concentrations and a defensive cytotoxin at higher concentrations. The high active site conservation among all three NOS isozymes hinders the design of selective NOS inhibitors to treat inflammation, arthritis, stroke, septic shock and cancer. Our crystal structures and mutagene...

Journal: :مجله تحقیق در علوم دندانپزشکی و فک و دهان 0
r shariatmadarahmadi periodontics dept, dental branch, islamic azad university , tehran, iran mr avadi nanotechnology dept,school of pharmacy,pharmaceutical sciences branch,dental branch of tehran, islamic azad university, a dastani iran

background and aim: probing is the only reliable method for diagnosing periodontal diseases; however, it is a painful examination. the purpose of this study was evaluation of the effect of emla anesthetic gel on the level of pain upon probing in patients with chronic periodontitis referring to the periodontology department of the dental branch of islamic azad university of tehran during 2013-20...

Journal: :iranian journal of public health 0
p. owlia mh. salari h. saderi z. kadkhoda

in this study 100 cases of advanced periodontitis were compared with a control group of 100 persons. the parameters were the depth of the periodontal pockets, radiographic images, presence of inflammatory cells and different types of anaerobic bacteria in the pockets. the depth of pocket was measured by a sterile probe and the presence of inflammatory cells was determined through sterile curett...

Journal: :Chemical communications 2011
Mario E G Moral Chingkuang Tu Witcha Imaram Alexander Angerhofer David N Silverman Nigel G J Richards

Membrane inlet mass spectrometry (MIMS) has been employed to assay the catalytic activity of oxalate decarboxylase (OxDC), allowing us to demonstrate that nitric oxide (NO) reversibly inhibits the enzyme under dioxygen-depleted conditions. X-band EPR measurements do not provide any direct evidence for the interaction of NO with either of the Mn(II) centers in OxDC raising the possibility that t...

Journal: :archives of clinical infectious diseases 0
hadi sedigh ebrahim-saraie department of bacteriology and virology, school of medicine, shiraz university of medical sciences, shiraz, ir iran; student research committee, shiraz university of medical sciences, shiraz, ir iran mohammad motamedifar department of bacteriology and virology, school of medicine, shiraz university of medical sciences, shiraz, ir iran; shiraz hiv/aids research center, shiraz university of medical sciences, shiraz, ir iran; department of bacteriology and virology, school of medicine, shiraz university of medical sciences, shiraz, ir iran. tel/fax: +98-7132304356 davood mansury department of bacteriology and virology, school of medicine, shiraz university of medical sciences, shiraz, ir iran; student research committee, shiraz university of medical sciences, shiraz, ir iran hooman ebrahimi department of oral medicine, dental school, islamic azad university, tehran, ir iran sara pourshahidi department of oral and maxillofacial medicine, tehran university of medical sciences, tehran, ir iran mehrdad halaji department of bacteriology and virology, school of medicine, shiraz university of medical sciences, shiraz, ir iran; student research committee, shiraz university of medical sciences, shiraz, ir iran

conclusions the results of the present study suggest that the presence of fusobacterium species in periodontal pockets is an important risk factor for halitosis. results in total, 26% (n = 13) and 8% (n = 4) samples were positive for fusobacterium species in the halitosis and control groups, respectively, with f. nucleatum present in the greatest proportion in both groups. halitophobia was sign...

Journal: :journal of periodontology and implant dentistry 0
anika daing aparna singh jaya dixit

background and aims. previous researches, conducted mostly on extracted teeth, have shown that efficacy of calculus removal decreases with increasing pocket depth, but there is still a lack of clinical studies concerning the correlation be-tween residual calculus and varying pocket depths. the objective of the present clinical study was to assess the efficiency of mechanical tooth depuration by...

Journal: :Journal of Computational Electronics 2022

The variation of the temperature-dependent performance an electronic device is one major concerns in predicting actual electrical characteristics as bandgap semiconducting material varies with temperature. Therefore, this article, we investigate impact temperature variations ranging from 300 to 450K on DC, analog/ radio frequency, and linearity dual stack gate oxide-source dielectric pocket-tun...

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