نتایج جستجو برای: heat radiation

تعداد نتایج: 432547  

In this article three dimensional modeling of a planar solid oxide fuel cell (SOFC) was investigated. The main objective was to attain the optimized cell operation. SOFC operation simulation involves a large number of parameters,   complicated equations, (mostly partial differential equations), and a sophisticated simulation technique; hence, a finite element method (FEM) multiphysics approach ...

   In this manuscript, a solar cavity packed with thermoelectric generator modules is investigated numerically. The hot plate of TEG modules make the inner surface of the cube, and the cold plate is outside of the cavity, under natural convection. The TEG modules are electrically in series. The solution algorithm using the equations of heat transfer and generated power of TEG modules is d...

2004
Jacob Lasri Peelamedu D. Ramesh Levi Schächter

A quasi-analytic model has been developed to examine energy conversion during the microwave sintering of a ceramic that is surrounded by a susceptor. Low-loss ceramics, such as ZrO2, couple poorly with microwave radiation at low temperatures; however, because the dielectric loss usually increases rapidly as temperature increases, coupling improves dramatically at high temperatures. To improve h...

ژورنال: مواد پرانرژی 2016

The threat of helicopters, military and civilian aircrafts by IR-guided missiles (heat seeking missiles) has always been a major one.One of the most effective methods to overcome this threat is an attempt to decoy the missile by the flares that are released by the aircraft (the target of the missile). .Certain compositions have the capability to form a pyrotechnic flare formulation that radiate...

B. Gautam D. Shvydka E. I. Parsai,

Concurrent hyperthermia and radiation therapy in treatment of cancer show a strong evidence of a synergistic enhancement. We designed a new self-regulating Thermo-Brachytherapy seed, which serves as a source of both radiation and heat for concurrent administration of brachytherapy and hyperthermia. The Thermo-Brachytherapy seed has a core of ferromagnetic material which produces heat when subje...

ژورنال: طب کار 2016
امیدی, لیلا, بشاش, داوود, جعفری, محمد جواد, خداکریم, سهیلا, عبداللهی, محمد باقر, نورلویی, سحر,

Introduction: Heat-related diseases are common disorders in many industries. Heat stress can cause changes in the secretion of some plasma hormones. The aim of this study was to determine the effects of heat stress on concentrations of serum triiodothyronine (T3) and thyroxine (T4) hormones among foundry workers. Methods: This cross sectional study was carried out with 35 workers of a foundr...

2006
Lester Kwock Peck-Sun Lin Kathy Hefter Donald F. H. Wallach

We have examined the effects of hyperthermia and radiation on the ability of a human T-leukemic lymphocyte line (Molt-4) to transport the Na -dependent amino acid, 2-aminoisobutyrate (AIB). Heating Molt-4 at 43°for 1 to 4 hr damages the ability of these cells to accumulate AIB. The damage to the transport system at 43°impairs only the maximal rate of AIB uptake, i.e., Vmax.The thermal effect ...

2015
Jianguang Xie Zhaoxu Yang Leilei Liang Nicola Pugno

This study is focused on investigating the effectiveness of low heat accumulation asphalt mixture and its impact on the urban heat environment. Infrared radiation experiments showed that the temperature of the asphalt mixture decreased with the increase in far-infrared radiant material. The results also revealed that, compared to asphalt with 0% far-infrared radiant content, the asphalt materia...

2006
W. C. Dewey

In using hyperthermia in the clinic, thermal dosimetry is essen tial and is discussed in terms of equating time-temperature relationships for an isoeffect to an equivalent time at a reference temperature, 43° for example. In applying time-temperatureequivalence, the sequence between heat and radiation and be tween two heat treatments, radiation dose rate, linear energy transfer, and physiologi...

2009
David H. Douglass Robert S. Knox

Article history: Received 26 June 2009 Received in revised form 8 July 2009 Accepted 9 July 2009 Available online xxxx Communicated by V.M. Agranovich PACS: 91.10.Vt 92.70.Gt

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