نتایج جستجو برای: biological effects radiation
تعداد نتایج: 2135498 فیلتر نتایج به سال:
The term radiation is elastic. Unfortunately it has come to mean “something terrible” in ordinary conversation. Literally radiation means “anything emitted from a localized source”, but in the context of biology we mean something quite specific. Human beings live amidst a sea of radiation of all sorts. It is useful to classify these radiations according to their biological effects, especially o...
Although it is well known that radiation causes mutational damage, little is known about the biological effects of long-term exposure to radiation in space. Exposure to radiation can result in serious heritable defects in experimental animals, and in humans, susceptibility to cancer, radiation-sickness, and death at high dosages. It is possible to do ground controlled studies of different types...
most popular sources for electromagnetic waves. however, there are many concerns regarding their biological effects on the body, especially the central nervous system. therefore, the aim of this study was to evaluate the effects of cell phone radiation on histology of the cerebellar granular cells in the neonatal rat. materials and methods: we selected some wistar rats. then, we randomly divide...
Many schools and educational institutions are using wireless Wi-Fi and Tablet technologies in their education. Recently WHO IARC classified radiofrequency (RF) radiation ‘possibly carcinogenic to humans’. Currently guidance levels for electromagnetic fields (including RF) are based on thermal effects while effects have been reported on non-thermal levels. Possibly these biological, non-thermal ...
Ionizing radiations are one of the predominant exogenous factors that have deleterious consequences to human life The biological effects of the radiation cause damages to DNAs, lipids and proteins. Exposure to high amounts of ionizing radiation causes damages to the hematopoietic, gastrointestinal or central nervous systems, depending on radiation dose. Hence, there is an urgent need to prevent...
Non-cancer effects and risks at low doses from ionising radiation are controversial topics within the field of radiation protection. These issues are discussed in International Commission on Radiological Protection (ICRP) Publication 118, 'ICRP statement on tissue reactions'. Both non-cancer effects and risks are expected to become increasingly important to the system of radiation protection. B...
Ionizing radiation causes biological damage that leads to severe health effects. However, the effects and subsequent health implications caused by exposure to low-dose radiation are unclear. The objective of this study was to determine phosphoprotein profiles in normal human fibroblast cell lines in response to low-dose and high-dose γ-radiation. We examined the cellular response in MRC-5 cells...
Introduction & Objective: Biological effects of ultraviolet (UV) radiation on the body of live organisms, have been studied by researchers in recent years. UV affects human organs such as skin, eyes and immune system, as well as animals and plants. The main natural source of UV radiation is the Sun. So, the integral observation of UV levels and their effects at ground level is important to dete...
The aim of this paper is to introduce a research review for the effect of Mobile phone radiation on human health and the possible relation between Mobile phone radiation and brain tumor. Mobile phones become increasingly prevalent throughout our society. In the year 2016, it was estimated that there were 4 billion cellular phone users worldwide; the number is growing by one million every month ...
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