نتایج جستجو برای: microwaves
تعداد نتایج: 2010 فیلتر نتایج به سال:
Interfering electrons in a mesoscopic ring are irradiated with both classical and nonclassical microwaves. The average intensity of the charges is calculated as a function of time and it is found that it depends on the nature of the irradiating electromagnetic field. For various quantum states of the microwaves, the electron autocorrelation function is calculated and it shows that the quantum n...
Reports on the Women in Microwaves (WiM) event that took place at Microwave and Radar Week 2020.
OBJECTIVE The main objective of this work is to study the effect of low pulsed microwaves on the heart rate variability signals derived from electrocardiogram signals of ten cats irradiated with pulsed microwaves with 5.655GHz. METHODS Electrocardiograms of ten anaesthetized cats were measured and recorded using implanted electrodes before microwave exposure. Rectangular pulses at 5.655GHz, 2...
Various microwave effects on chemical reactions have been observed, reported and compared to those carried out under conventional heating. These effects are classified into thermal effects, which arise from the temperature rise caused by microwaves, and non-thermal effects, which are attributed to interactions between substances and the oscillating electromagnetic fields of microwaves. However,...
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...
The use of microwaves to perform inorganic synthesis allows the direct transfer of electromagnetic energy inside the reaction mixture, independently of the temperature manifested therein. The conversion of microwave (MW) radiation into heat is useful in overcoming the activation energy barriers associated with chemical transformations, but the use of microwaves can be further extended to higher...
A fast, efficient and novel method of preparation of hydroxyapatite using microwaves has been described.
• .>*'•The number of studies of how microwaves arouse warmth sensations can be counted on the fingers of one hand. They leave many, many unanswered questions, but the nature of the questions to be asked will in general take shape in the light of the much larger amount of information thati we have about the perception of infrared radiation. So ^he main substance of this paper is to use present k...
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