نتایج جستجو برای: Phase change

تعداد نتایج: 1154431  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده فنی مهندسی 1388

the purpose of this study is identifying effective factors which make customers shop online in iran and investigating the importance of discovered factors in online customers’ decision. in the identifying phase, to discover the factors affecting online shopping behavior of customers in iran, the derived reference model summarizing antecedents of online shopping proposed by change et al. was us...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بیرجند - دانشکده علوم انسانی 1390

in solvo-hydrothermal method, xrd pattern was indicated presence of intermediate of ammonium octatmolybdate and ammonium tetramolybdate, which were changed to stble phase of ?-moo3 annealing. sem images were indicated nanoparticle with semispheical morphology and tem image was demonstrated nanoparticles with a diameter size of 25nm. also in impregnate method. the xrd pattern was shown high crys...

2013
Xiang Shen Guoxiang Wang R. P. Wang Shixun Dai Liangcai Wu Yimin Chen Tiefeng Xu Qiuhua Nie

2013
Guoxiang Wang Xiang Shen Qiuhua Nie Fen Chen Xunsi Wang Jing Fu Yu Chen Tiefeng Xu Shixun Dai Wei Zhang Rongping Wang

Journal: :international journal of nanoscience and nanotechnology 2015
s. sabbaghi s. mehravar

the aim of this paper is to enhance thermal performance of a microchannel heat sink by using nanoencapsulated phase change material (nepcm) slurry as a cooling fluid instead of pure fluid. a threedimensional model of a circular channel using water slurry of nepcm was developed. the results show a significant reduction in the mean fluid temperature along the channel and heat sink wall temperatu...

Journal: :journal of heat and mass transfer research 0
mohammad bahreini faculty of mechanical engineering, babol noshirvani university of technology, babol, iran abbas ramiar faculty of mechanical engineering, babol noshirvani university of technology, babol, iran ali akbar ranjbar faculty of mechanical engineering, babol noshirvani university of technology, babol, iran

in this present study, volume of fluid method in openfoam open source cfd package will be extended to consider phase change phenomena with modified model due to condensation and boiling processes. this model is suitable for the case in which both unsaturated phase and saturated phase are present and for beginning boiling and condensation process needn't initial interface. both phases (liqu...

2015
Jos E. Boschker Mattia Boniardi Andrea Redaelli Henning Riechert Raffaella Calarco

2013
Guoxiang Wang Xiang Shen Qiuhua Nie R. P. Wang Liangcai Wu Yegang Lu Shixun Dai Tiefeng Xu Yimin Chen

Journal: :Optics letters 1994
A L Belostotsky A S Leonov A V Meleshko

The process of type II second-harmonic generation has been investigated theoretically. It is found that, unlike in the process of type I second-harmonic generation, phase matching is not necessary for a significant shift of the pump wave phase to be produced. The simple inequality of the intensities of interacting waves suffices for this effect to occur.

2016
Chong Li Meng Lu Hui Hu Shankar Subramaniam Daniel Attinger

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