نتایج جستجو برای: thermal factors

تعداد نتایج: 1286940  

ژورنال: مواد پرانرژی 2017

C4 composition is a conventional military explosive formulation based on cyclotrimethylenetrinitramine explosive (RDX) and polyisobutylene binder (PIB), which some environmental factors such as thermal and oxygen lead to change in its color and physical characteristics. Using anti-oxidant to reduce the impact of environmental factors and increasing the stability of materials...

Journal: :The Journal of experimental biology 2017
Madeline J Drake Nathan A Miller Anne E Todgham

Much of our understanding of the thermal physiology of intertidal organisms comes from experiments with animals acclimated under constant conditions and exposed to a single heat stress. In nature, however, the thermal environment is more complex. Aerial exposure and the unpredictable nature of thermal stress during low tides may be critical factors in defining the thermal physiology of intertid...

2013
Hiva Azmoon Habibollah Dehghan Jafar Akbari Shiva Souri

UNLABELLED Environmental conditions such as lighting and thermal comfort are influencing factors on sleep quality and visual tiredness. The purpose of this study was the determination of the relationship between thermal comfort and light intensity with the sleep quality and eye fatigue in shift nurses. METHOD This cross-sectional research was conducted on 82 shift-work personnel of 18 nursing...

Journal: :Molecular bioSystems 2016
Julian D Hegemann Christopher D Fage Shaozhou Zhu Klaus Harms Francesco Saverio Di Leva Ettore Novellino Luciana Marinelli Mohamed A Marahiel

Lasso peptides are fascinating natural products with a unique structural fold that can exhibit tremendous thermal stability. Here, we investigate factors responsible for the thermal stability of caulosegnin II. By employing X-ray crystallography, mutational analysis and molecular dynamics simulations, the ring residue proline 8 was proven to be crucial for thermal stability.

2014
Anette KARLTUN Johan KARLTUN Martina BERGLUND Jörgen EKLUND

While the broad field of ergonomics and human factors provides a strong potential in systems analysis, design and improvement, the focus risks being perceived unclear for different stakeholders. This paper addresses how focusing the interactions between Humans, Technology and Organization by using the HTO-concept contributes to the understanding, communication and use of systems thinking inhere...

Journal: :Dental materials journal 1984
K Asaoka N Kuwayama

plate model, were calculated by the theory of statically indeterminate beam and the finite element method. The factors that have the greatest effect on thermal residual stress in the veneer are coefficient of thermal expansion, modulus of elasticity and thickness of the layers. The relation between these factors and thermal residual stress after firing were studied. The effect of physical and m...

2018
Danuta Barnat-Hunek Marcin K. Widomski Małgorzata Szafraniec Grzegorz Łagód

The aim of the research that is presented in this paper was to evaluate the physical and mechanical properties of heat-insulating mortars with expanded cork aggregates and different binders. In this work, the measurements of surface roughness and adhesion strength, supported by determination of basic mechanical and physical parameters, such as density, bulk density, open porosity, total porosit...

2014
Shen Xu Zaoli Xu James Starrett Cheryl Hayashi Xinwei Wang

This work reports on the first study of thermal transport capacity in the thickness direction (wmm scale) for spider silk films. Fresh (minimally processed) and hexafluoroisopropanol (HFIP) films of Nephila clavipes and Latrodectus hesperus major ampullate silk are studied. Detailed Raman spectroscopy reveals that the fresh films have more crystalline secondary protein structures such as antipa...

براتی, جواد, فطرس, محمد حسن,

  The power sector in Iran accounts for a share of 28.2 percent of the total CO2 emissions, so it is the biggest emitter of greenhouse gases. This study uses Logarithmic Mean Divisia Index (LMDI) technique to examine the role of five factors (economic growth, fuel intensity, electricity intensity, structure and quality of fuel) influencing CO2 emissions of the Power Plant sector in the period 1...

Journal: :Indoor air 2003
H O Nilsson I Holmér

With increasing demand for acceptable environment in the modern workplace is it necessary, already in the construction phase, to estimate what effect different environmental factors have on the occupants. Thermal sensation is affected by many factors in the work place environment, especially thermal factors and effects from air movement caused by different ventilation principles. A series of fu...

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