نتایج جستجو برای: bond stress model

تعداد نتایج: 2542477  

پایان نامه :0 1380

این مطالعه در نظر دارد تا استحکام برشی 4 نوع سیستم چسبنده عاجی موجود در بازار را مقایسه کند. چهار نوع چسب عاجی شامل: 1-‏‎cleafil-se bond(kuraray)‎‏ 2-‏‎etch&prime 3.0‎‏3-‏‎excite single component(vivadent)‎‏ 4-‏‎single bond(3m)‎‏ است.

Hossein Nazmiyeh , Zahra Sadri , Zarrin Habibian ,

Background: Job stress is defined as the harmful physical and emotional responses happening when the requirements of the job do not match the capabilities, resources, or needs of the worker. Some jobs such as nursing are stressful. The aim of this study was to investigate the effects of group acceptance and commitment therapy (ACT) on job stress and burnout among pediatric oncology and special ...

1999
Manoj K. Chaudhury

Schallamach’s theory of rate-dependent bond dissociation is used to understand the fracture of a polymerglass interface. The model system consists of an elastomeric film (20 μm thick) of poly(dimethylsiloxane), chemically bonded to a silanized glass substrate. The fracture energy of the interface varies logarithmically with velocity, which is consistent with Schallamach’s theory of forced bond ...

Journal: :Acta Crystallographica Section A Foundations of Crystallography 1993

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه لرستان - دانشکده علوم پایه 1389

abstract part one: the electrode oxidation potentials of a series of eighteen n-hydroxy compounds in aqueous solution were calculated based on a proper thermodynamic cycle. the dft method at the level of b3lyp-6-31g(d,p) was used to calculate the gas-phase free energy differences ,and the polarizable continuum model (pcm) was applied to describe the solvent and its interaction with n-hydroxy ...

Journal: :Asia-pacific Financial Markets 2022

This study aims to predict GCC financial stress on oil market, and Stock bond markets while considering the effect of 2008 crisis, 2014 drop price 2019 novel COVID-19 outbreak. For this purpose, we use a new approach for predicting stress, based One-Dimensional Convolutional Neural Network (1D-CNN). article introduces parameters optimization method, which provides best 1D-CNN improve prediction...

Journal: :journal of sciences islamic republic of iran 0

the one-dimensional model of lippincott and schroeder for hydrogen bond has been re-examined and it has been shown that o-h bond distance depends on repulsive van der waals and attractive electrostatic potentials.it has been shown that constant b in the van der waals repulsion potential is not transferable to all hydrogen bonds. the possibility of obtaining the semi-empircal parameters in the l...

2016
Roman M. Wittig Catherine Crockford Anja Weltring Kevin E. Langergraber Tobias Deschner Klaus Zuberbühler

Stress is a major cause of poor health and mortality in humans and other social mammals. Close social bonds buffer stress, however much of the underlying physiological mechanism remains unknown. Here, we test two key hypotheses: bond partner effects occur only during stress (social buffering) or generally throughout daily life (main effects). We assess urinary glucocorticoids (uGC) in wild chim...

Journal: :Canadian Journal of Civil Engineering 2022

Due to the assumption of uniform bond stress, development length fibre reinforced polymer (FRP) bars by design standards can be unnecessarily long and difficult provide in practice. Hence, stress distribution required a glass (GFRP) rebar is investigated. Four beam-bond specimens, two following RILEM specifications based on procedure ACI are tested evaluate effect test method strength. Ten pull...

The one-dimensional model of Lippincott and Schroeder for hydrogen bond has Been re-examined and it has been shown that O-H bond distance depends on repulsive van der Waals and attractive electrostatic potentials.it has been shown that constant b in the van der Waals repulsion potential is not transferable to all hydrogen bonds. The possibility of obtaining the semi-empircal parameters i...

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