The arylidienes of spiro thiazolidines (5) containing α,β-unsaturated function have been used as component of Micheal addition with equimolar amount of 2-aminopyridine (6a) to give novel spiro [indole-3,2′-pyrido[1,2-a]thiazolo[5,4-e]pyrimidines] (7) in a single step under microwaves in presence of montmorillonite KSF as solid support. The new improved synthetic method for spiro [indole-3, 2′-t...

The aim of this research paper is to discuss the advantages and disadvantages of microwaves. Microwaves are a form of electromagnetic radiation with wavelengths ranging from as long as one meter to as short as one millimeter, or equivalently, with frequencies between 300 MHz (0.3 GHz) and 300 GHz. In this paper uses, sources, applications and effects on human health are discussed and the final ...

The purpose of this work was to explore the application of microwaves for the low temperature regeneration of activated carbons saturated with a pharmaceutical compound (promethazine). Contrary to expectations, microwave-assisted regeneration did not lead to better results than those obtained under conventional electric heating. At low temperatures the regeneration was incomplete either under m...

The unique properties of microwaves make them useful in many diverse applications across a wide range fields, spanning much engineering and science. In the chemical sciences, provide toolkit electric magnetic effects with which, at high power, unconventional heating modes can be used to produce new materials not obtainable by conventional heating. At low microwave revealing spectroscopic measur...

background: in this research, the decomposition of aroclor 1254, including 20 kinds of poly chlorinated biphenyls (pcbs), in real waste transformer oil in the presence of peg1000, naoh, zero valent iron and h2o by microwave (mw) irradiation was studied. methods: central composites design (ccd) method was carried out for experimental design. the effects of microwave power levels (200- 1000 w), r...

Carney, S. A., Lawrence, J. C., and Ricketts, C. R. (1970). Brit. J. industr. Med., 27, 72-76. Effect of microwaves at X-band on guinea-pig skin in tissue culture. 3. Effect of pulsed microwaves on skin respiration and biochemistry. Small pieces of guinea-pig skin were exposed to known power densities of pulsed microwaves at X-band (9-6 GHz). The pulse duration was 0 25 microsecond and the puls...

Background: Regarding the wide domain of microwaves applications in human life, yet its biologic impacts on human body cells are discussed. Therefore our goal is the investigation of mobile phone microwaves with frequency of 950 MHz on apoptotic changes of epididymis in rabbits. Materials and Methods: 18 male New Zealand rabbits were randomly divided into 2 experiment group and 1 control group....

Human mononuclear leukocytes were exposed to microwaves at energies relevant to current public safety recommendations. No detectable effects on viability or function of the leukocytes resulted from exposure to microwaves at specific absorption rates up to 4 milliwatts per milliliter. The results were highly reproducible and provided no evidence that current safety standard recommendations are i...