نتایج جستجو برای: microwave radiation

تعداد نتایج: 269070  

Ashraf S. Shahvelayati Jila Vesalian

Benzylaminoalkenones and benzylaminoalkenoates 3 were synthesized from reaction of benzylamine with corresponding 1,3-diketones and 1,3-ketoesters in the presence of catalytic amount of chloroacetic acid under microwave radiation. This method offers several advantages including high yield of products, recyclable of the catalyst and easy experimental work-up procedure.

Journal: :Environmental Health Perspectives 1972
D I McRee

Properties of Microwaves Microwaves are electromagnetic waves which fail in the frequency range of approximately 30-300,000 MHz. The location of the microwave band in the electromagnetic spectrum is shown in Fig. 1. From the relation X = c/l), (where X is the wavelength of the radiation, c is the speed of light, and is the frequency) the range of the wavelength of the radiation in free space is...

2016
Salih Toker Zainab Boone-Kukoyi Nishone Thompson Hillary Ajifa Travis Clement Birol Ozturk Kadir Aslan

Physical stability of synthetic skin samples during their exposure to microwave heating was investigated to demonstrate the use of the metal-assisted and microwave-accelerated decrystallization (MAMAD) technique for potential biomedical applications. In this regard, optical microscopy and temperature measurements were employed for the qualitative and quantitative assessment of damage to synthet...

2008
Hiie Hinrikus Maie Bachmann Jaanus Lass

This paper is a review of the studies performed on microwave effects on resting electroencephalography (EEG) and visual memory and information processing during the last ten years. Some earlier results, obtained at the Biomedical Engineering Centre of the Tallinn University of Technology are reevaluated and generalized. Microwave radiation of 450 MHz, modulated at 7, 14, 21, 40, 70, 217 and 100...

2007
X. Yu X. B. Yu

and B. Zhang, Department of Civil Engineerign, Case Western Reserve University, 10900 Euclid Avenue, Bingham 210, Cleveland OH 44016-7201, [email protected], Department of Civil Engineerign, Case Western Reserve University, 10900 Euclid Avenue, Bingham 203C, Cleveland OH 44016-7201, [email protected]. Department of Civil Engineerign, Case Western Reserve University, 10900 Euclid Avenue, Bingham 203B,...

2013
Raghunath Toche Ravindra Janrao

Simple and rapid synthesis of various diversely functionalized unprotected 4-amino-2-chloroquinoline-3-aryl derivatives were synthesized in high yields by Suzuki cross-coupling reaction using microwave irradiation in water and in presence of tetrakis(triphenylphosphine)palladium(0). Electronic effects of o-substituted functional groups on the reaction were studied conclusively.

2014
Daniel Slocombe Adrian Porch Etienne Bustarret Oliver A. Williams

2008
S. Paloscia P. Pampaloni

Retrieving information on forest biomass and soil under vegetation is crucial for all studies concerning global changes and carbon balance. The capability of microwaves in penetrating vegetation covers is well known, but only few studies have investigated emission from soil under forests and the contribution of single tree elements to total radiation. To further examine quantitatively these asp...

2014
Rammohan Pal Taradas Sarkar Tapas Sarkar

Various indolyl chalcones have been synthesized in unsealed vessels in a domestic microwave oven. Considerable increase in the reaction rate has been observed with better yields.

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