نتایج جستجو برای: strength sensitivity

تعداد نتایج: 535659  

ژورنال: مجله دندانپزشکی 2009
جعفرزاده کاشی, طاهره سادات, عرفان, محمد, نزادی نیاسر, الهیار,

Background and Aim: Evaluation of shear bond strength and microleakage of bonding agents is important as these properties play main roles in adhesion of composite to dental tissues. Microleakage results in bacterial penetration into dentin tubules and enamel surfaces and causes sensitivity and recurrent caries followed by destruction of composite filling. Insufficient shear bond strength result...

Journal: :journal of dentistry, tehran university of medical sciences 0
hossein afshar associate professor, dental research center dentistry research institute, department of pediatric, faculty of dentistry, tehran university of medical sciences, tehran, iran. yahya baradaran nakhjavani associate professor, dental research center dentistry research institute, department of pediatric, faculty of dentistry, tehran university of medical sciences, tehran, iran. sedighe rahro taban associate professor, department of oral and maxillofacial pathology, faculty of dentistry, tehran university of medical sciences, tehran, iran. zahra baniameri assistant professor, department of pediatric, faculty of dentistry, golestan university of medical sciences, golestan, iran. azam nahvi associate professor, department of pediatric, faculty of dentistry, mazandaran university of medical sciences, sari, iran.

this in-vitro study sought to assess the push-out bond strength of a total etch and 2 self-etch bonding systems to intracanal dentin of primary anterior teeth (pat).thirty-six primary anterior teeth were randomly divided into 3 groups of 5(th) generation (single bond 2), 6(th) generation (clearfil se) and 7(th) generation (single bond universal) bonding agents. the canal orifice was restored wi...

Journal: :The Journal of clinical investigation 2013
Katsuhiko Funai Haowei Song Li Yin Irfan J Lodhi Xiaochao Wei Jun Yoshino Trey Coleman Clay F Semenkovich

Exogenous dietary fat can induce obesity and promote diabetes, but endogenous fat production is not thought to affect skeletal muscle insulin resistance, an antecedent of metabolic disease. Unexpectedly, the lipogenic enzyme fatty acid synthase (FAS) was increased in the skeletal muscle of mice with diet-induced obesity and insulin resistance. Skeletal muscle-specific inactivation of FAS protec...

This paper deals with modeling and optimization of the roll-bonding process of Ti/Cu/Ti composite for determination of the best roll-bonding parameters leading to the maximum Ti/Cu bond strength by combination of neural network and genetic algorithm. An artificial neural network (ANN) program has been proposed to determine the effect of practical parameters, i.e., rolling temperature, reduction...

2004
Hans Rott

In this paper I discuss the relation between various properties that have been regarded as important for determining whether or not a belief constitutes a piece of knowledge: its stability, strength and sensitivity to truth, as well as the strength of the epistemic position in which the subject is with respect to this belief. Attempts to explicate the relevant concepts more formally with the he...

ژورنال: مواد پرانرژی 2019

Plastic bonded explosive PBXN-103 as an underwater charge based on energetic binder system uses in warhead section of several navy weapons. Metriol trinitrate (MTN), triethylene glycol dinitrate (TEGDN) and pelletized nitrocellulose are basic ingredients of binder system in PBXN-103 formulation.  In this research the effects of applying accessible Poly glycidyl nitrate (PGN) as binder, were inv...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان 1390

cement is an essential ingredient in the concrete buildings. for production of cement considerable amount of fossil fuel and electrical energy is consumed. on the other hand for generating one tone of portland cement, nearly one ton of carbon dioxide is released. it shows that 7 percent of the total released carbon dioxide in the world relates to the cement industry. considering ecological issu...

Journal: :international journal of civil engineering 0
m. karimpour fard university of guilan, rasht, iran postal code: 1841 tel/fax: +98 131 3232806 n. shariatmadari iran university of science and technology narmak, teharn, iran postal code: 16846_13114 tel: +98 21 77451500-9 m. keramati iran university of science and technology narmak, teharn, iran postal code: 16846_13114 tel: +98 21 77451500-9 h. jafari kalarijani iran university of science and technology narmak, teharn, iran postal code: 16846_13114 tel: +98 21 77451500-9

due to the existence of fibrous materials such as plastic fragments, the strength anisotropy of municipal solid waste (msw) materials is the main source of differences between their mechanical response in direct shear and triaxial apparatus. as an extension of earlier research on the mechanical behavior of msw using a large traixail apparatus, results presented in shariatmadari et al. [1] and k...

2003
Jon M. Yearsley David Fletcher Christine Hunter

Population models are often used to guide conservation management decisions. Sensitivity analysis of such models can be useful in setting research priorities, by highlighting those parameters that have the most influence on population growth rate. Much of the work on sensitivity analysis in this context has been for density-independent models. We present a sensitivity analysis of a density-depe...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز 1352

خواص فیزیکی و مکانیکی چوب مورد مطالعه قرار گرفته است . برای اینکار چوب درخت چنار انتخاب شده است . آزمایشات انجام شده هم بصورت استاتیک و هم بصورت دینامیک بوده است . نمونه هائی با رطوبت و دانسیته های مختلف آزمایش شده اند. همه موارد آزمایشات در دمای آزمایشگاه انجام شده است . خواص مکانیکی چون ضریب ارتجاعی (modulus of elasticity) حد تناسب (proportional limit) حد کشش (tensile strength) تاب خرد شدگی (...

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