نتایج جستجو برای: microwave

تعداد نتایج: 50836  

2013
N. C. Vora Y. T. Jasrai

Micropropagation of banana (Musa paradisiaca Linn.) var Grand naine was carried out with media sterilized by microwave radiation. Microwave oven was effectively used to sterilize the media for in vitro shoot-multiplication of banana against autoclave. Sterilization of media in microwave oven was successfully achieved at 900W/200 ml media (4 min). In vitro shoot-multiplication was higher in the ...

2014
M. Salazar-Alvarez E. Magner

An interdigitated microwave sensor was used to detect the adsorption of cytochrome c on hydroxyapatite thick films. Changes in the microwave spectral response were indicative of the presence of adsorbed cytochrome c. The sensitivity of the system was also evaluated using different protein loadings on the e films. The results suggest that the microwave sensor can be utilized to detect protein. K...

Journal: :The Journal of organic chemistry 2008
M Antonia Herrero Jennifer M Kremsner C Oliver Kappe

The concept of nonthermal microwave effects has received considerable attention in recent years and is the subject of intense debate in the scientific community. Nonthermal microwave effects have been postulated to result from a direct stabilizing interaction of the electric field with specific (polar) molecules in the reaction medium that is not related to a macroscopic temperature effect. In ...

Journal: :تحقیقات دامپزشکی 0
علی حشمتی گروه بیوشیمی و تغذیه دانشکده پزشکی، دانشگاه علوم پزشکی و خدمات بهداشتی درمانی همدان، همدان، ایران جمیله سالار آملی گروه علوم پایه، دانشکده دامپزشکی دانشگاه تهران، تهران–ایران و مرکز تحقیقات سم شناسی و مسمومیت های دامی، دانشکده دامپزشکی دانشگاه تهران، تهران–ایران ابولفضل کامکار گروه بهداشت و کنترل مواد غذایی، دانشکده دامپزشکی دانشگاه تهران، تهران–ایران جلال حسن گروه علوم پایه، دانشکده دامپزشکی دانشگاه تهران، تهران–ایران و مرکز تحقیقات سم شناسی و مسمومیت های دامی، دانشکده دامپزشکی دانشگاه تهران، تهران–ایران غلامرضا جاهد گروه بهداشت مواد غذایی، دانشکده بهداشت دانشگاه علوم پزشکی تهران، تهران–ایران

background: antibiotic residue in food is a major concern from a health point of view. post-slaughter and pre-consumption processing such as cooking could affect residue. objectives: the purpose of this study is to survey the effect of boiling and microwave on tilmicosin in chicken. methods: chicken samples containing different tilmicosin amounts cooked in boiling water and in the microwave. af...

Journal: :journal of research in health sciences 0
ghorban asgari abdolmotaleb seidmohammadi afsane chavoshani ali reza rahmani

background: pentachlorophenol (pcp) is one of the most fungicides and pesticides. acute and chronic poisoning from pcp may be occurred by dermal absorption, and respiration or ingestion. with respect to health and environmental effects of pcp, many methods were considered regarding its removal. microwave assisted other methods are environmental friendly, safety, and economical method, consequen...

Journal: :journal of dental research, dental clinics, dental prospects 0
mahmood robati anaraki assistant professor, department of prosthodontics, faculty of dentistry, tabriz university of medical sciences, tabriz, iran elnaz moslehifard soran aminifar hamed ghanati

background and aims. although microwave irradiation has been used for disinfection of dental stone casts, there are concerns regarding mechanical damage to casts during the process. the aim of this study was to evaluate the effect of microwave irradiation on the compressive strength (cs) and diametral tensile strength (dts) of stone casts. materials and methods. in this in vitro study, 80 cylin...

Journal: :iranian journal of radiation research 0
k. heck department of nuclear medicine, frankfurt university hospital, frankfurt, germany y. korkusuz department of nuclear medicine, frankfurt university hospital, frankfurt, germany c. happel department of nuclear medicine, frankfurt university hospital, frankfurt, germany f. grünwald department of nuclear medicine, frankfurt university hospital, frankfurt, germany h. korkusuz department of nuclear medicine, frankfurt university hospital, frankfurt, germany

background: local ablative treatments play an important role for patients who cannot be treated surgically. radiofrequency ablation is a well-established alternative to surgical treatment of thyroid nodules, however it also has disadvantages. microwave ablation (mwa) is a new minimally invasive treatment promising several improvements. the aim of this retrospective study was to evaluate the eff...

Journal: :Journal of chromatography. A 2011
Chung-Hung Chan Rozita Yusoff Gek-Cheng Ngoh Fabian Wai-Lee Kung

Microwave-assisted extraction (MAE) is widely employed in the analysis and the extraction of active compounds from plants. This review summarizes the research done during the last decade on the MAE of active ingredients from plants. Advances and modifications to improve the performance of MAE are presented and discussed in detail. Modified MAE such as vacuum microwave-assisted extraction (VMAE)...

2013
Ajay Shukla Ramchandra Gupta Prabhakar Sharma Alok Pal Jain

A calcium sennoside was extracted by developed microwave assisted extraction technique from Senna leaves. Microwave extraction was carried out at 250 W for 20 minutes, 350 W for 15 minutes and 450 W for 10 min heating period, these produced increase yields of calcium sennosides when compared to conventional heating. The yield of calcium sennosides obtained by microwave extraction was found to b...

2004
J. G. P. Binner D. M. Price B. Vaidhyanathan

A hybrid calorimeter is described whereby the test specimen may be heated using either hot air and/or microwave radiation. Thus it is possible to study phase transitions of materials under conditions ranging from purely conventional heating to pure microwave heating or mixtures thereof. Measurements using silver iodide showed that its phase change from the low temperature β-phase to the high te...

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