Find all the latest on radiation levels at Medical Xpress. Your go-to source for news, research, and medical breakthroughs.
In all cases surface radiation levels on the Archean Earth were several orders of magnitude higher in the 200300 nm wavelength range than current levels in this range. That means that any form of life that might have been present at Earth's surface 43.5 Ga must have been exposed to much ...
- 《Science China Earth Sciences》 被引量: 24发表: 2013年 成都地区室内环境氡浓度和γ辐射水平调查 中国环境科学, 2013, 33(2): 351-356 XU Lipeng, GE Liangquan, GU Yi, et al. Investigation of indoor radon concentration and γ radiation levels in ... 徐立鹏,葛良全,谷懿,... - 《中国...
Antarctica receives more solar radiation than does any other place on Earth, yet the temperatures are so cold and the ice capis reflective, so that little polar ice melts during the summer; otherwise,the water levels of the oceans would rise 250 feet and engulf most of the world's great ...
One of the main effects of radiation exposure is the formation of single strand (ssDNA) and DNA double-strand breaks (DSB) together referred to as DNA damage56. High DSB levels can lead to cell death and low levels of DSB result in genomic rearrangements and may lead to cancer. In this...
The effect of stratospheric ozone depletion on increases in ambient levels of solar ultraviolet (UV) radiation in high-latitude regions' has raised concern... R Pienitz,WF Vincent - 《Nature》 被引量: 791发表: 2000年 Climate change: Potential effects of increased atmospheric Carbon dioxide (CO2...
There are different kinds of radiation but it is ionising radiation that can cause damage to living tissue at high levels making it vital to control our exposure to it. Radiation exposure depends on three factors, the: strength of the radiation source distance you are from it duration of the...
the International Commission on Radiological Protection (IRCP) confirmed that doses for CT scans approach or exceed levels associated with an increase in lifetime cancer risk.Table 7summarizes the average and range of effective doses for common medical imaging and the radiation-equivalent number ofche...
Artist's rendering of NASA's Orion Multi-Purpose Crew Vehicle on a deep space mission.(Image credit: NASA) High radiation levels beyond Earth orbit pose the biggest challenge to human exploration of deep-space destinations, experts say.
The severity of these statistical effects does not depend on the intensity of the radiation. One such effect is the mutation in cells, where even low levels of radiation can cause permanent damage. In this case, the amount of radiation can not only increase the probability of initiation of ...