نتایج جستجو برای: specific heat of gases

تعداد نتایج: 21236483  

Journal: :ماشین های کشاورزی 0
جلال خدایی هادی صمیمی

kurdistan rasa grape is one of the delicious and sweet fruits with black color. it contains vitamins e, c and some protectors such as antioxidants. in order to design equipments and facilities for drying, preservation and processing of rasa grape, it is necessary and important to know about its specific heat and thermal conductivity. in this paper the specific heat and thermal conductivity of r...

Journal: :مهندسی بیوسیستم ایران 0
محمدحسین کیانمهر دانشیار، پردیس ابوریحان سیدرضا حسن بیگی دانشیار، پردیس ابوریحان سید حبیب اله هاشمی فرد دهکردی دانشجوی کاشناسی ارشد، پردیس ابوریحان

to design the equipment and facilities for preservation, storage and processing of pomegranate, it is necessary to know the specific heat and thermal conductivity of the fruit components. the specific heat of exocarp, mesocarp and of seeds of pomegranate were assessed at three moisture content levels (30, 50 and 76% for seed and mesocarp; 15, 35 and 52% for exocarp) and at four temperature leve...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده علوم انسانی 1389

abstract the present research is prepared to study the culture of tea consuming among iranian. the case group which was statistically used for this study was people of lahijan , about four hundred wich were chosen according to their age , gender , education and occupation , randomly selected to fill the questionnaire . then the data collected through the questionnaire was analyzed according ...

Journal: :international journal of advanced design and manufacturing technology 0
ali moarefzadeh mehdi ahmadi najafabadi

in this paper, thermal effect of plasma arc welding is investigated, and temperature field of ferrite stainless steel is acquired. thermal effect of plasma arc and subsequently the generated temperature field in the work piece is the key for analysis and optimization of this welding process, which is the main goal of this paper. finite element simulation of welding process by simplec method and...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه یزد 1388

hedging is a multi-purpose rhetorical strategy which is usually used in scientific arguments to secure ratification of claims, reduce the risk of negation, avoid conflict, manage disagreement and leave room for the audience to assess presented information. hedges are frequently used in research articles to mitigate the findings of research endeavors. the present research aims to investigate the...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید چمران اهواز - دانشکده مهندسی علوم آب 1393

drought is transient phenomenon , slow , repetitive and integral part of the climate of each region. drought begins with a substantial reduction in precipitation over the long-term average rainfall and over time, reduced soil moisture and surface and ground water resources will continue to decrease. this phenomenon is the most important in bakhtegan basin because of its importance in strategic ...

Barat Ghobadian Behdad Shadidi Hossein Haji Agha Alizade

In internal combustion engines, only about a third of the total fuel input energy is converted into useful work. If the energy rejected into the cooling system and the exhaust gases could be recovered instead and put into useful work, fuel economy would have been substantially improved. The main aim of this research paper was to evaluate the effects of the hybrid nano-catalyst containing ce...

Journal: :Journal of the Fuel Society of Japan 1963

Journal: :iranian journal of medical sciences 0
ayman al-mariri department of molecular biology and biotechnology, atomic energy commission of syria, damascus, syria saker saloum department of physics, atomic energy commission of syria, damascus, syria omar mrad department of chemistry, atomic energy commission of syria, damascus, syria ghayath swied department of molecular biology and biotechnology, atomic energy commission of syria, damascus, syria bashar alkhaled department of physics, atomic energy commission of syria, damascus, syria

the role of low-pressure rf plasma in the inactivation of escherichia coli o157, klebsiella pneumoniae, proteus mirabilis, and enterobacter sakazakii using n2-o2 and sf6 gases was assessed. 1×109 colony-forming units (cfus) of each bacterial isolate were placed on three polymer foils. the effects of pressure, power, distance from the source, and exposure time to plasma gases were optimized. the...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه مازندران - دانشکده علوم انسانی و اجتماعی 1388

abstract the present study was conducted to examine the effect of proficiency on students interaction while carrying out the grammar-based task(s) in collaboration. in particular, the study examines whether the level of proficiency affects the learners’ focus of attention to grammatical and lexical features. the study takes a further step and examines whether there is any difference in the use...

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