نتایج جستجو برای: thermal parameters

تعداد نتایج: 778357  

Most aspects of reproductive function including spermatogenesis, oocyte growth and maturation, early embryonic development, fetal and placental growth, and lactation can be affected by thermal stress. Furthermore, it has been shown that oxidative stress involves in the pathology of thermal stress. Therefore, the aim of this study was to investigate the impacts of thermal stress on the ovine mat...

Journal: :geopersia 0
feridon ghadimi arak university of technology, department of mining engineering, arak, iran mahmoud mirzaei department of physics, faculty of science, arak university, arak, iran mohammad ghomi arak university of technology, department of mining engineering, arak, iran

in this study multivariate statistical analysis are used to characterize relationships between hydrochemical properties ofthermal and non-thermal springs. four factors for thermal waters and two for non-thermal springs were extracted basedon factor analysis. in thermal springs, the first factor showed high loading on ca, mg, na and k and this factor wasinterpreted as leaching of cations in the ...

Journal: :Optics express 2008
C Jacinto T Catunda D Jaque L E Bausá J García-Solé

We report on a simple and accurate method for determination of thermo-optical and spectroscopic parameters (thermal diffusivity, temperature coefficient of the optical path length change, pump and fluorescence quantum efficiencies, thermal loading, thermal lens focal length, etc) of relevance in the thermal lensing of end-pumped neodymium lasers operating at 1.06- and 1.3- microm channels. The ...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2015
behnaz aghaaliakbari abbas jafari jaid mir ali asghar zeinali

a one–dimensional, transient and thermal degradation model for predicting responses of composite materials when are exposed to the fire is presented. the presented model simulates ablation of composites with different layers of materials and considers material properties as functions of temperature. the reactions are modeled by using arrhenius-type parameters and density-temperature diagrams wh...

Journal: :journal of membrane science and research 0
aamer ali institute on membrane technology (itm-cnr), national research council, c/o university of calabria, cubo 17c, via pietro bucci, 87036 rende cs, italy c.a. quist-jensen university of calabria - department of environmental and chemical engineering, rende, italy f. macedonio institute on membrane technology (itm-cnr), national research council, c/o university of calabria, cubo 17c, via pietro bucci, 87036 rende cs, italy enrico drioli hanyang university, wcu energy engineering department, seoul 133-791, s. korea

membrane distillation has the potential to concentrate solutions to their saturation level, thus offering the possibility to recover valuable salts from the solutions. the process performance and stability, however, is strongly dependent upon the features of membranes applied. in addition, several other parameters, membrane thickness and thermal conductivity significantly affect the process per...

Journal: :international journal of occupational hygiene 0
mohammad reza ghotbi ravandi department of occupational health engineering, school of public health, kerman university of medical sciences, kerman, iran sajad salimi department of occupational health engineering, school of public health, kerman university of medical sciences, kerman, iran narges khanjani department of statistics and epidemiology, school of public health, kerman university of medical sciences, kerman, iran mohammad javad jafari department of occupational health engineering, school of public health, shahid beheshti university of medical sciences, tehran, iran

original article   introduction: exposure to heat is one of the workplace risk factors, which may lead to thermal strain, such as rising heart rate and body temperature. to have the best association between a heat stress indices and physiological parameters have always been a major concern for those studying the subject. this study aims to compare the association of two heat stress indices with...

2009
S. C. Mukhopadhyay

A hybrid thermal model for accurate estimation of thermal condition of cagerotor induction motors under non-standard supply systems has been presented. The developed thermal model is a combination of lumped and distributed thermal parameters which are available from motor dimensions and other physical constants. The thermal condition of the motor under non-standard supply systems such as unbala...

Journal: :geopersia 2013
feridon ghadimi mahmoud mirzaei mohammad ghomi

in this study multivariate statistical analysis are used to characterize relationships between hydrochemical properties ofthermal and non-thermal springs. four factors for thermal waters and two for non-thermal springs were extracted basedon factor analysis. in thermal springs, the first factor showed high loading on ca, mg, na and k and this factor wasinterpreted as leaching of cations in the ...

Kouhikamali, Ramin, Torfeh, S.,

Accurate modeling of fluidization and heat transfer phenomena in gas-solid fluidized beds is not solely dependent  on the particular selected numerical model and involved algorithms. In fact, choosing the right model for each specific operating condition, the correct implementation of each model, and the right choice of parameters and boundary conditions, determine the accuracy of the results i...

Flame stability inside a cylindrical micro-combustor was studied. Considering occurrence of heat recirculation, the respective relations were written and with parameters such as motion speed of reactants, flame propagation speed and thermal conductivity of the combustor’s wall, flame stability and its location inside micro-combustor were studied. It was found that for each thermal conductivity ...

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