نتایج جستجو برای: thermal data

تعداد نتایج: 2599635  

Journal: :international journal of nano dimension 0
m. sahooli nano chemical eng. dep., faculty of advanced technologies, shiraz university, shiraz, iran. s. sabbaghi nano chemical eng. dep., faculty of advanced technologies, shiraz university, shiraz, iran. r. maleki nano chemical eng. dep., faculty of advanced technologies, shiraz university, shiraz, iran. m. m. nematollahi school of electrical and computer engineering, shiraz university, shiraz, iran.

statistical methods, and especially machine learning, have been increasingly used in nanofluid modeling. this paper presents some of the interesting and applicable methods for thermal conductivity prediction and compares them with each other according to results and errors that are defined. the thermal conductivity of nanofluids increases with the volume fraction and temperature. machine learni...

Journal: :journal of agricultural science and technology 2010
s. k. alavi panah r. goossens h. r. matinfar h. mohammadi m. ghadiri

a knowledge of soil surface conditions, especially desert crust, salt crust and desert varnish is useful for improving classification of remotely sensed data. desert crust can generate high levels of reflectance, similar to those areas with high salt concentration and non-saline soil. therefore, soil surface crusts might bias thematic remote sensing of soils. in this study, we evaluated the eff...

Journal: :journal of dental school, shahid beheshti university of medical sciences 0
طاهره غفاری t ghafari dept. of prosthodontics, dental school, tabriz university of medical sciences, tabriz- iran.گروه پروتزهای دندانی، دانشکده دندانپزشکی، دانشگاه علوم پزشکی تبریز فهیمه حامدی راد f. hamedi rad dept. of prosthodontics, dental school, tabriz university of medical sciences, tabriz- iran.گروه پروتزهای دندانی، دانشکده دندانپزشکی، دانشگاه علوم پزشکی تبریز بهارک عزتی b. ezzati dept. of prosthodontics, dental school, tabriz university of medical sciences, tabriz- iran.گروه پروتزهای دندانی، دانشکده دندانپزشکی، دانشگاه علوم پزشکی تبریز

objective: studies have demonstrates that physical properties of denture base affect patient satisfaction and acceptance. thermal conductivity is among the most important properties of denture base influencing the sense of taste and gingival health. the conventionally used acrylic resin has a low coefficient of thermal conductivity. this study aimed to improve the thermal conductivity of acryli...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد گرمسار - دانشکده زبانهای خارجی 1389

previous studies have aimed at testing a hypothesis but the present study is data-first research in which researcher tries to form a theory from data rather than the use of data to test a hypothesis. this study aims at exploring teachers perceptions of the strengths and weaknesses of the current syllabus for college preparatory course. eight experienced teachers were selected to collect data du...

Journal: :تحقیقات نظام سلامت 0
محمدرضا طاهری دانشجوی کارشناسی ارشد بهداشت حرفه ای، گروه مهندسی بهداشت حرفه ای، دانشکده بهداشت دانشگاه علوم پزشکی اصفهان، اصفهان، ایران حبیب الله دهقان استادیار گروه مهندسی بهداشت حرفه ای، دانشکده بهداشت دانشگاه علوم پزشکی اصفهان، اصفهان، ایران بهزاد مهکی استادیار گروه آمار و اپیدمیولوژی، دانشکده بهداشت، دانشگاه علوم پزشکی اصفهان، اصفهان ، ایران نیما خوشزاد دانشجوی کارشناسی ارشد بهداشت حرفه ای، گروه مهندسی بهداشت حرفه ای، دانشکده بهداشت دانشگاه علوم پزشکی اصفهان، اصفهان، ایران

background: today discussion thermal comfort due to technology advances and equipment application in the workplace for government and non-governmental organizations managers in the industrial and non-industrial environments, especially hospitals staff   due to the diversity of people employed and the type of work they are doing of particular importance. this study was conducted to evaluate the ...

Journal: :iranian journal of science and technology transactions of mechanical engineering 2015
y. bakhshan a. hajhosseini

in this study, thermal performance of a cylindrical heat pipe is investigated numerically. three different types of water based nanofluids, namely (al2o3+water), (diamond+water) and (multi-wall carbon nano tube (mwcnt) +water) have been used. the influence of using the simple nanofluids and mwcnt nanofluid on the heat pipe characteristics such as liquid velocity, pressure profile, temperature p...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده زبانهای خارجی 1393

the purpose of this study was to examine the english language needs of medical students at tehran university of medical sciences . analysis of the needs took place for three groups: 320 undergraduate students, 30 postgraduate students and 20 university instructors. a triangulation approach to collect data was used in which a combination of the quantitative (using the questionnaires) and qualita...

Journal: :transport phenomena in nano and micro scales 2014
m. keikhaie m.r. movahhedi j. akbari h. alemohammad

thin bonded films have many applications in antireflection and reflection coating, insulating and conducting films and semiconductor industries. thermal conductivity is one of the most important parameter for power packaging since the thermal resistance of the interconnections is directly related to the heat removal capability and thermal management of the power package. the defects in material...

M. M. Nematollahi M. Sahooli R. Maleki S. Sabbaghi,

Statistical methods, and especially machine learning, have been increasingly used in nanofluid modeling. This paper presents some of the interesting and applicable methods for thermal conductivity prediction and compares them with each other according to results and errors that are defined. The thermal conductivity of nanofluids increases with the volume fraction and temperature. Machine learni...

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