نتایج جستجو برای: 950 mhz wave
تعداد نتایج: 239490 فیلتر نتایج به سال:
in this study, absorption of high frequency radio waves in the ionospheric plasma have beeninvestigated. the wave equation was obtained in terms of ionospheric parameters. the numerical values ofthe absorption have been calculated for 4 mhz, 4.5 mhz and 5 mhz waves. the necessary parameters forcalculation have been obtained using an international reference ionosphere (iri) model. the altitudina...
Introduction: Over the last decade, exposure to electromagnetic waves due to base station antennas has increased. This study was planned to evaluate the effects of different electrical field strengths with 950 MHz waves of the GSM mobile phone system on the excitatory postsynaptic potentiation (EPSP) slope of the dentate gyrus long-term potentiation (LTP). Material and Methods: Twenty four naiv...
Introduction: Over the last decade, exposure to non-ionizing electromagnetic waves due to base station antenna has increased. This in vivo study was planned for evaluating the effects of whole-body exposure to 950 MHz field of GSM mobile phone system on rat dentate gyrus long-term potentiation. Materials and Methods: 24 naive male Wistar rats (3 month old, 225|¡|25 g) were randomly divided in t...
Background: Regarding to the considerable application of microwave in everyday life, their effects on biological tissues are still controversial.This study determines the effect of microwave on morphometric changes in rabbit prostate. Materials and Methods: 18 New Zealand male rabbits were divided into three groups (control, 3 w and 6 w),the animals in the control group were not exposed to micr...
A wave detector, a newly designed magnetic probe, is installed in the large helical device (LHD). This wave detector is a 100-turn loop coil with electrostatic shield. Comparing a one-loop coil to this detector, this detector has roughly constant power coupling in the lower frequency range of 40 MHz, and it can easily detect magnetic wave in the frequency of a few megahertz. During high-harmoni...
introduction: over the last decade, exposure to electromagnetic waves due to base station antennas has increased. this study was planned to evaluate the effects of different electrical field strengths with 950 mhz waves of the gsm mobile phone system on the excitatory postsynaptic potentiation (epsp) slope of the dentate gyrus long-term potentiation (ltp). material and methods: twenty four naiv...
سابقه و هدف: با افزایش کاربری تلفن همراه، تابش‌گیری ناشی از میدان‌های الکترومغناطیسی حاصل از گوشی و آنتن‌های گیرنده/ فرستنده تلفن همراه رو به افزایش است. این مطالعه به منظور بررسی اثر تابش کوتاه‌مدت میدان الکترومغناطیسی امواج MHz 950 سیستم تلفن همراه GSM بر مرحله تثبیت حافظه فضایی صورت گرفت. مواد و روش‌ها: 33 رأس موش بزرگ آزمایشگاهی مذکر از نژاد Wistar با سنی حدود 3 ماه و وزن 15±200 گرم، در م...
Background: Considerable attention is focused on effects of electromagnetic field (EMF) and its increasing use in everyday life. Appliances and various equipments are sources of electromagnetic field with a wide-range of technical characteristics. In this study we investigated the effect of EMF (950 MHz) on epididymis in rabbit. Materials and Methods: 18 Newzealand rabbits were selected and div...
Effects of 950 MHz mobile phone electromagnetic fields on the peripheral blood cells of male rabbits
Today, mobile phones are used frequently and held close to the body. It is believed that microwaves may interfere with the cellular signaling systems, affecting the mechanisms by which the cells balance their functions. The objective of this work is the evaluation of the influence of different intensities of 950 MHz cell phone electromagnetic field (EMF) on the hematological parameters of male ...
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