نتایج جستجو برای: microwave oven
تعداد نتایج: 54287 فیلتر نتایج به سال:
The effect of dietary fiber enrichment (wheat bran) and cooking methods (oven, steam and microwave) on functional and physico-chemical properties of raw nuggets formulation as well as nutritional, color and textural properties of chicken nuggets were analyzed in this study. Among different cooking methods used for nuggets preparation, steam cooked nuggets had significantly (p<0.05) higher water...
Since WLAN (Wireless LAN: IEEE802. 11b) systems shares the 2.4 GHz frequency band with microwave ovens, interference caused by the radiated noise from the ovens is a serious problem. This paper proposes the use of adaptive filters to suppress the microwave oven interference in DS-SS (Direct Sequence Spread Spectrum) WLAN links. This method is based on the fact that an oven noise can be regarded...
This is the first of two articles about the physics of microwave ovens. This article deals with the generation of microwaves in the oven and includes the operation of the magnetrons, waveguides and standing waves in resonant cavities. It then considers the absorption of microwaves by foods, discussing the dielectric relaxation of water, penetration depths of electromagnetic waves in matter and,...
The door to a microwave oven forms part of the heating cavity, allowing access to the oven interior. The seal around the door is never perfect, so electromagnetic fi elds will leak out of the oven, potentially interfering with other electrical equipment or exceeding safety limits for power levels in human operators. Oven designs have to meet legal requirements for the amount of power which can ...
Microwave ovens and 802.11 both use the unlicensed 2.4GHz ISM (Industrial Scientific Medical) band. Microwave ovens use this frequency to heat while 802.11 uses this for communication. The use of microwave ovens in the vicinity of an 802.11 node therefore naturally affects the node's ability to communicate. In this project we investigate how microwave oven noise interacts with 802.11 communicat...
The potential shortage of allograft bone has led to the need to investigate other sources of bone for allografts. Some allograft bone donated from primary total hip arthroplasty recipients must be discarded or treated to become usable as a result of bacterial contamination. Femoral head allografts were contaminated with Staphylococcus aureus and Bacillus subtilis. A domestic microwave oven was ...
According to radiation protection regulations, microwave radiation intensity should not exceed general public exposure limit defined in "Iranian Standard-Non ionizing radiation-exposure limits". Based on this standard, exposure limit for microwave ovens, which work at 2450 MHz, is 1mW/cm2. By implementing such standard, about 575 imported ovens, including different models and brands w...
wireless, radio, MAC, protocol, 802.11 This paper studies the impact of common interferers found in unlicensed bands on 802.11 and other CSMA systems. First, we describe those interferers and the MAC techniques used to combat them. Then, we present Fragment Adaptive Reduction, a scheme to overcome the effect of non CSMA repetitive interferers, and it's implementation in the SWAP protocol. We al...
In this paper, the coverage region of communication quality degradation would be indicated. The index of PER (UDP packet frame error rate) is employed to evaluate the communication quality and verify the prediction results. Moreover, by measuring the interference in terms of PER, the dependence of the microwave oven interference on the whole communication channels in the IEEE 802.11 DSSS wire...
Introduction: Microwaves are a part of the electromagnetic radiation spectrum that has high frequency and short wavelength. The purpose of this study is to determine electromagnetic radiation emitted from household and restaurant microwave ovens. Methods: The survey was carried out for 45 ovens used in households and restaurants. Electromagnetic radiations from different brands of microwave ov...
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