نتایج جستجو برای: hot temperature

تعداد نتایج: 518383  

Journal: :Journal of athletic training 1998
D O Draper S T Harris S Schulthies E Durrant K L Knight M Ricard

OBJECTIVE Therapeutic ultrasound is an effective deep heating modality commonly applied alone or after cooling or heating of the treatment area. The purpose of this study was to examine the tissue temperature rise in the human triceps surae muscle group after ultrasound with prior heating via a silicate gel hot pack. DESIGN AND SETTING This study was designed as a 2 x 2 x 3 factorial with rep...

Journal: :jundishapur journal of health sciences 0
peymaneh habibi department of occupational health engineering, school of health, isfahan university of medical sciences, isfahan, ir iran reza momeni department of engineering occupational health, student research center, school of health, isfahan university of medical sciences, isfahan, ir iran habibollah dehghan department of occupational health engineering, school of health, isfahan university of medical sciences, isfahan, ir iran; department of occupational health engineering, school of health, isfahan university of medical sciences, isfahan, ir iran. tel: +98-3117922733, fax: +98-3116682509

conclusions the results showed that, compared to participants with normal weights, physiological and thermal perceptual responses were higher in overweight participants. therefore, overweight individuals should avoid hot/dry weather conditions to decrease the amount of heat strain. results in both groups, oral temperature, heart rate, and thermal perceptual responses increased during heat expos...

2012
Luis R. Bernardo Henrik Davidsson Björn Karlsson

One of the biggest obstacles to economic profitability of solar water heating systems is the investment cost. Retrofitting existing domestic hot water heaters when a new solar hot water system is installed can reduce both the installation and material costs. In this study, retrofitting existing water heaters for solar water heating systems in Swedish single-family houses was theoretically inves...

Journal: :International journal of biometeorology 2015
George Katavoutas Helena A Flocas Andreas Matzarakis

Thermal comfort under non-steady-state conditions primarily deals with rapid environmental transients and significant alterations of the meteorological conditions, activity, or clothing pattern within the time scale of some minutes. In such cases, thermal history plays an important role in respect to time, and thus, a dynamic approach is appropriate. The present study aims to investigate the dy...

2012
Yuming Guo Kornwipa Punnasiri Shilu Tong

BACKGROUND The association between temperature and mortality has been examined mainly in North America and Europe. However, less evidence is available in developing countries, especially in Thailand. In this study, we examined the relationship between temperature and mortality in Chiang Mai city, Thailand, during 1999-2008. METHOD A time series model was used to examine the effects of tempera...

2011
Yuming Guo Adrian G Barnett Xiaochuan Pan Weiwei Yu Shilu Tong

BACKGROUND Although interest in assessing the impacts of temperature on mortality has increased, few studies have used a case-crossover design to examine nonlinear and distributed lag effects of temperature on mortality. Additionally, little evidence is available on the temperature-mortality relationship in China or on what temperature measure is the best predictor of mortality. OBJECTIVES Ou...

Journal: :International journal of biometeorology 2001
D Fiala K J Lomas M Stohrer

A mathematical model for predicting human thermal and regulatory responses in cold, cool, neutral, warm, and hot environments has been developed and validated. The multi-segmental passive system, which models the dynamic heat transport within the body and the heat exchange between body parts and the environment, is discussed elsewhere. This paper is concerned with the development of the active ...

2012
Ali Mamizadeh

The most important parameter in transformers life expectancy is the hot-spot temperature level which accelerates the rate of aging of the insulation. The aim of this paper is to present thermal models for transformers loaded at prefabricated MV/LV transformer substations and outdoor situations. The hot-spot temperature of transformers is studied using their top-oil temperature rise models. The ...

BackgroundThe absence of pain relief in infants can lead to harmful effects; so, this study aimed to investigate the effect of local heat on the pain of vitamin K injection in the infants.Materials and MethodsThis randomized clinical trial was conducted on 80 healthy infants. For the control group, 1 mg vitamin K was injected into the vastus lateralis muscle by a nurse. In the 3 intervention gr...

1998
PETER ARNOLD LAURENCE G. YAFFE

I will be discussing the rate for non-perturbative processes in hot non-Abelian plasmas. For me “hot” means high enough temperature that the running coupling α(T ) is small, that chemical potentials are ignorable, and that there is no spontaneous symmetry breaking. Examples of non-perturbative processes include chirality violation in hot QCD and baryon number violation in hot electroweak theory...

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