نتایج جستجو برای: mobile microwave
تعداد نتایج: 221690 فیلتر نتایج به سال:
With cell mobile phone devices becoming a basic part of life, the re-charging of cell mobile phone battery energy has always been a problem. The cell mobile phone devices differ in their talk-time and battery energy take a position by according to their producer and battery energy. All these mobile phones regardless of their producer and battery energy have to be put to renew after battery ener...
This paper presents the numerical evaluation of the microwave absorption at 2.4 GHz (ISM band) in a homogeneous rectangular head model. Specific absorption rate(SAR) reduction in the head model is achieved by attaching nickel-zinc spinel ferrite sheet resonating at 2.4 GHz to a mobile phone. RF shields made of ferrite sheets are used to suppress surface currents on the mobile phone. Simulations...
Point-to-Point microwave links operating in various licensed bands have for many years been an attractive alternative to wired networks in situations where difficult terrain or lack of access make cable runs expensive or impractical. Point-to-Point microwave, however, does have its drawbacks: the high frequencies it operates in translate to high hardware cost, and the perlink license fee it ent...
Purpose: To determine the effects of mobile phones waves on the inner layer of pyramidal cells in rabbit. Materials and Methods: 18 male rabbits were selected and were randomly divided into 3 groups. These group are control group (Gi) and experimental group (G2 & G3). 6 rabbits were placed in each group. The animals in experimental group were exposed to microwave (915 MHz and intensity of 3 wat...
background: the use of mobile phone by children is increasing drastically. children are likely to accumulate many years of exposure during their lives. furthermore, as nervous systems in children are developing, children may be at a greater risk compared to adults. in this light, some scientists have suggested that the use of mobile phones should be restricted in high-risk groups such as childr...
Wireless technologies are ubiquitous today and the mobile phones are one of the prodigious output of this technology. Although the familiarization and dependency of mobile phones is growing at an alarming pace, the biological effects due to the exposure of radiations have become a subject of intense debate. The present evidence on mobile phone radiation exposure is based on scientific research ...
A conceptual flash flood early warning system for developing countries is described. The system uses rainfall intensity data from terrestrial microwave communication links and the geostationary Meteosat Second Generation satellite, i.e., two systems that are already in place and operational. Flash flood early warnings are based on a combination of the Flash Flood Guidance method and a hydrologi...
Background: Infertility is defined as inability to conceive after a year of sexual intercourses without the use of contraceptives. In half of the cases the causative factor is the male. Males are exposed to the effect of various environmental factors, which may decrease their reproductive capabilities. Phone electromagnetic power is very small, only a few hundredths of a microwave oven, but bec...
The number of mobile users is increasing as the time passes and the technology keeps on evolving to meet the requirement of higher data rates than the previous generation. This in turns leaves a huge harmful biological impact on the biodiversity. The microwave mobile communication systems include the TV, FM and AM broadcasting station which use large amount of power to transmit the signals at a...
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