نتایج جستجو برای: temperature increase

تعداد نتایج: 1211973  

Journal: :iranian journal of science and technology (sciences) 2013
sh. a. mansour

the thermally stimulated discharge (tsdc) current is studied for acrylonitrile butadiene rubber (nbr) loaded with different high abrasion furnace carbon black (haf). tsdc peak appears only for higher haf contents > 60phr (70 and 80phr of haf contents), the tsdc spectra consist of a sharp peak corresponding to a peak temperature tm which is slightly shifted to higher temperature for 70phr ...

Journal: :journal of biomedical physics and engineering 0
m h bahreyni-toosi a ale davood m t shakeri m h zare

background and objective: multi-walled carbon nano tubes (mwcnts) as an important element of nanosciences have a remarkable absorption in the region of nir window (650-900 nm) which can overcome the limitations of deep treatment in photothermal therapy. to disperse mwcnts in water, it is proposed to attach carboxylated functional group (-cooh) to mwcnts in order to increase dispersivity in wate...

Journal: :پژوهش های علوم و صنایع غذایی ایران 0
fatemeh heidari dalfard masoud taghizadeh s.m.a. razavi

introduction: malt extract is one of the malt products obtainedfrom concentrations of water soluble extract of grains such as barley and is a proper alternative to white sugar. it has a high diastasis properties andcontainshigh amount of different vitamins specially the group of vitamin b as well as high amount of fermentable sugars. therefore, malt extract has high nutritional value and is rec...

Magnetic and Electrical Resistivity Study of Electroless Amorphous Ternary System (Ni-Co-P) show a qualitative dependence of crystalline phases formed during transformation on the annealing temperature and composition. Electrical Resistivity values increases with increase in cobalt content and samples with higher resistivity show lower temperature coefficients. The Initial increase in magnetiza...

Journal: :پژوهش های جغرافیای طبیعی 0
حسین عساکره استاد، اقلیم شناسی، دانشگاه زنجان بهرام شاه منصوری دانشجوی دکتری آب وهواشناسی شهری، دانشگاه زنجان

introduction the city population, in particular at the industrialized cities and centers of provinces, has increased dramatically in iran during recent decades. arak city as center of markazi province is among those industrialized cities which has experienced a fast increase in population. these changes in population numbers tend to increase consuming water resources as well as increasing in en...

Journal: :تحقیقات موتور 0
محسن قاضی خانی m. ghazikhani محمد شریف زاده m. sharifzadeh امیر ارژنگ نیا a. arjangnia ابوالفضل شریف زاده a. sharifzadeh

in this study a heat exchanger is designed for cooling exhaust gas and an experiment is carried out to investigate the effect of exhaust gas recirculation (egr) temperature on destruction of the fuel’s availability due to combustion processes in idi diesel engine cylinder. to serve this aim an exergy analysis is conducted on the engine cylinder which provides all the availability terms by which...

Journal: :جغرافیا و مخاطرات محیطی 0
مصطفی کرم پور بهروز نصیری زهره مریانجی پارسا غلامی خدیجه مرادی سعید بساطی

kermanshah station as station coordinates 34 degrees 21 minutes north latitude and 47 degrees9 minutes east longitude has been extreme temperature fluctuations and predict for the analysis of kermanshah and their relationship with the nao is considered to carry out this study, data relating to the maximum annual absolute maximum temperature.. رnowadays one of the most important discussions in t...

Journal: :iranian journal of public health 0
mohammad baaghideh fatemeh mayvaneh

abstract background: weather and climate play a significant role in human health. we are accustomed to affects the weather conditions. by increasing or decreasing the environment temperature or change of seasons, some diseases become prevalent or remove. this study investigated the role of temperature in cardiovascular disease mortality of city of mashhad in the current decade and its simulatio...

Foad Farhani, Siamak Azimi-Nam

Effects of temperature on electrical parameters of polysilicon solar cells, fabricated using the phosphorous spin-on diffusion technique, have been studied. The current density–voltagecharacteristics of polycrystalline silicon solar cells were measured in dark at different temperaturelevels. For this purpose, a diode equivalent model was used to obtain saturation current densi...

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