نتایج جستجو برای: specific heat

تعداد نتایج: 1220913  

بلقن آبادی, سمیه, تیزرو, مهدی, محمدی, علی اکبر, پور, مهدی,

Introduction: during the physical activity in hot environments, sweating with evaporation, the important physiological response of the body  increases which can be lead to dehydration . Long-term water shortages could adversely affect vital organs. The aim of this study was to determine heat stress and dehydration status of workers in hot workplaces. Methods: This cross sectional study ...

Journal: :middle east journal of rehabilitation and health studies 0
anna m ryosa department of neurology, turku university hospital, turku, finland; university of turku, turku, finland; department of neurology, turku university hospital, turku, finland. tel: +358-44 0407686 anders romberg university of turku, turku, finland juhani ruutiainen masku neurological rehabilitation centre, masku, finland paivi hamalainen masku neurological rehabilitation centre, masku, finland

conclusions the results suggest that the msfc could be used as a simple tool to detect the negative effects of heat in patients with ms. results in the ms group the average msfc scores were -0.48 (sd 0.79) at baseline, -0.99 (sd 1.97) during heat exposure and -0.68 (sd 1.58) after a one-hour delay. the average msfc scores of the hc group were 0.58 (sd 0.42) at baseline, 0.66 (sd 0.43) during he...

Journal: :علوم کاربردی و محاسباتی در مکانیک 0
مهدی مهدوی خواه مجتبی ماموریان حمید نیازمند

one of the cooling systems that has received considerable attentions in recent years is the adsorption chiller, which works based on the adsorption and desorption of a working fluid in a solid porous bed. different parameters such as fin height directly affect the bed heat and mass transfer processes, and therefore, the performance of the adsorption chillers. in the present study a numerical mo...

Journal: :journal of research in health sciences 0
elham ahmadnezhad kourosh holakouie naieni ali ardalan mahmood mahmoodi masoud yunesian kazem naddafi

background: in the past three decades, tehran has experienced warmer summer so we need to determine heat-related mortality to establish appropriate public health activities during hot summers. the aim of the present study was to detect heat waves during the last decades and then determine excess mortality in immediate and lagged times. method: an ecological study based on time-series model was ...

In this paper, the performance of an ejector cooling system and the effect of the following different working fluids such as water, ammonia, R134a, R141b, R12, R600 and R245fa are described and the effects of cycle parameters on the consumed heat and work and COP are studied. This cycle with the working fluid R141b has the least COP while the working fluid R₁₂ in comparison with the other worki...

In this study 1,3,5-triamino-2,4,6-trinitrobenzene (TATB) interaction with carbon nanocone(NC) and nanocone Sheet (NCS) was evaluated by density functional theory. The calculated thermodynamic parameters including Gibbs free energy changes and Enthalpy alterations showed the interaction of TATB with the both nanostructures are exothermic, spontaneous, experimentally possible ...

ژورنال: مواد پرانرژی 2021

The engine cooling in first stage of satellite carrier rocket via kerosene fuel leads to increase the missile range. For increasing the heat transfer coefficient of the fuel, addition of nanoparticle is a preferred method. At constant velocity of nanofuel through the fuel flow passage in combustion chamber, evaluation of the coefficient depends on assessment of the effective parameters. These p...

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