نتایج جستجو برای: microwave radiation

تعداد نتایج: 269070  

Journal: :تحقیقات نظام سلامت 0
عبدالمطلب صید محمدی عضو هیات علمی، گروه بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی همدان، همدان، ایران. قربان عسگری عضو هیات علمی، گروه بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی همدان، همدان، ایرا افشین ابراهیمی استادیار، مرکز تحقیقات محیط زیست، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران. زهرا شریفی کارشناس بهداشت محیط، آزمایشگاه آب و فاضلاب، مرکز بهداشت همدان، همدان، ایران. حسین موحدیان عطار استاد، مرکز تحقیقات محیط زیست، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران.

background: there are many varieties of compounds in chemical and petrochemical wastewater. one of the important members of the chlorophenols (cps) family is ρ-chlorophenol. this pollutant is introduced into the environment through various human activities such as waste incineration, uncontrolled use of wood preservatives, pesticides, fungicides and herbicides, as well as via bleaching the pulp...

Journal: :journal of medicinal plants and by-products 0

hyssopus of­ficinalis l. is one of the most important medicinal plants. medicinal herbs are contaminated by microorganisms. conventional methods for reducing of microbial loads such as ethylene oxide, propylene oxide and also use of steam are hazardous and instead, non-thermal process such as microwave and gamma radiation are being used widely in order to eliminate the microbial contaminations ...

2006
M. Bal Jonathan R. Friedman E. M. Rumberger S. Shah D. N. Hendrickson E. Zeldov

Microwave radiation applied to single-molecule magnets can induce large magnetization changes when the radiation is resonant with transitions between spin levels. These changes are interpreted as due to resonant heating of the sample by the microwaves. Pulsed-radiation studies show that the magnetization continues to decrease after the radiation has been turned off with a rate that is consisten...

Journal: :international journal of molecular and clinical microbiology 0
ariyo shahin-jafari department of pathobiology, faculty of veterinary specialized sciences, science and research branch, islamic azad university, tehran, iranسازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (islamic azad university science and research branch) mansour bayat department of pathobiology, faculty of veterinary specialized sciences, science and research branch, islamic azad university, tehran, iranسازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (islamic azad university science and research branch) mohammad hassan shahhosseini department of microbiology, shahr-e-qods branch, islamic azad university, tehran, iranسازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (islamic azad university science and research branch) parviz tajik department of pathobiology, faculty of veterinary specialized sciences, science and research branch, islamic azad university, tehran, iranسازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (islamic azad university science and research branch) shahla roudbar-mohammadi faculty of medical mycology, tarbiat modares university, tehran, iranسازمان اصلی تایید شده: دانشگاه تربیت مدرس (tarbiat modares university)

to date, registered users of mobile phone communication network exceeded from total numbers of the world population, while a little knowledge of the biological effects of, 900-1800 mhz microwave radiation, originating from the handsets or the base transceiver stations, have been released. the current study was designed for evaluation of 900-mhz radiation effects on candida albicans proliferatio...

2006
Raymond Y. Chiao

The generation, as well as the detection, of gravitational radiation by means of charged superfluids is considered. One example of such a “charged superfluid” consists of a pair of Planck-mass-scale, ultracold “Millikan oil drops,” each with a single electron on its surface, in which the oil of the drop is replaced by superfluid helium. When levitated in a magnetic trap, and subjected to microw...

Journal: :Philosophical transactions. Series A, Mathematical, physical, and engineering sciences 2005
Dipak Munshi Patrick Valageas

Weak gravitational lensing is responsible for the shearing and magnification of the images of high-redshift sources due to the presence of intervening mass. Since the lensing effects arise from deflections of the light rays due to fluctuations of the gravitational potential, they can be directly related to the underlying density field of the large-scale structures. Weak gravitational surveys ar...

Journal: :Chemical Society reviews 2005
Antonio de la Hoz Angel Díaz-Ortiz Andrés Moreno

Microwave irradiation has been successfully applied in organic chemistry. Spectacular accelerations, higher yields under milder reaction conditions and higher product purities have all been reported. Indeed, a number of authors have described success in reactions that do not occur by conventional heating and even modifications of selectivity (chemo-, regio- and stereoselectivity). The effect of...

2016
Shuangli Liu Zhiqin Zhao Xiaozhang Zhu Zhanliang Wang Jian Song Bingwen Wang Yubin Gong Zaiping Nie Qing-Huo Liu

Microwave induced thermo-acoustic tomography (MITAT) is a developing technique for biomedical applications, especially for early breast cancer detection. In this paper, impacts of short microwave pulse on thermo-acoustic (TA) signals are analyzed and verified through some experimental comparisons. In these experiments, short microwave pulses with widths of 10 ns and 500 ns are employed as radia...

2015
Y. M. Zhao J. Wang H. B. Liu C. Y. Guo W. M. Zhang

Microwave-assisted extraction was used for the extraction of alantolactone and isoalantolactone from Inula helenium. Effects of various experimental factors including ethanol concentration, particle size, microwave radiation time, the ratio of material to liquid and extraction temperature on yield of alantolactone and isoalantolactone were evaluated. The optimal extracting process of the alanto...

2014
Xueyan Zhang Yabing Gao Ji Dong Shuiming Wang Binwei Yao Jing Zhang Shaohua Hu Xinping Xu Hongyan Zuo Lifeng Wang Hongmei Zhou Li Zhao Ruiyun Peng

BACKGROUND The prevention and treatment of Microwave-caused cardiovascular injury remains elusive. This study investigated the cardiovascular protective effects of compound Chinese medicine "Kang Fu Ling" (KFL) against high power microwave (HPM)-induced myocardial injury and the role of the mitochondrial permeability transition pore (mPTP) opening in KFL protection. METHODS Male Wistar rats (...

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