Results 41 to 50 of about 493,079 (334)
Measurement of background radiation in Jhapa, Ilam, Panchthar, and Taplejung districts of Nepal
Bibechana, 2023 In this study, we investigated the levels of background radiation in different locations across the Eastern part of Koshi province, specifically in Taplejung, Panchthar, Ilam, and Jhapa.
Arun Kumar Shrestha +6 more
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Modeling Background Radiation in Isotropic Cosmologies [PDF]
Gen.Rel.Grav.43:1625-1638,2011, 2011 Using explicit perturbations of isotropic cosmological models which describe simple gravitational waves, an isotropic tensor having the algebraic symmetries of the Bel-Robinson tensor is derived as a model of cosmic background gravitational radiation and this is used to provide an answer to the question: in what sense can an energy-momentum-stress ...
arxiv +1 more source
Data-driven evaluation of background radiation safety using machine learning and statistical analysis [PDF]
Big Data and Computing VisionsThe entire globe is radioactive naturally, and humans are constantly exposed to background radiation from cosmic rays and the radioactive materials in their environment. The concentration and effects of background radiation can vary based on geographical
Muhammad Abid, Muhammad Shahid
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The Cosmic Background Radiation
, 1996 10 pages, postscript file available at http://www-pdg.lbl.gov/1995/contents_sports.html and also at http://pdg.lbl.gov/~smoot/rac.html, the RPP sub-page for ...
Smoot, G. F., Scott, D.
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Spectrum of the microwave background radiation [PDF]
Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences, 1982 A review is given of the present status of measurements of the spectrum of the microwave background. Factors that limit experimental accuracy are discussed with particular reference to high-frequency measurements. A selection of the available measurements yields a data set that is reasonably consistent with the black-body spectrum for a temperature of ...
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An environmental dose experiment [PDF]
European Journal of Physics, 38 ( 2017) 065801, 2017 Worldwide several radiation sources contribute to the delivered dose to the human population. This radiation also acts as natural background when detecting radiation, for instance from radioactive sources. In this work a medium-size plastic scintillation detector is used to evaluate the dose delivered by natural radiation sources.
arxiv +1 more source
Interstellar Hydrogen and Cosmic Background Radiation [PDF]
Chaos Solitons & Fractals 12(2001) pp 1563-1564, 2000 It is shown that a collection of photons with nearly the same frequency exhibits a "condensation" type of phenomenon corresponding to a peak intensity. The observed cosmic background radiation can be explained from this standpoint in terms of the radiation due to fluctuations in interstellar Hydrogen.
arxiv +1 more source
Fast Simulation Study of Muon Absorption Radiography Based on Energy Loss Calculation
Yuanzineng kexue jishu, 2022 Using natural cosmic ray muon as radiation source, muon absorption radiography can realize nondestructive detection of large-scale geological objects. Simulation analysis is an important step in the application of muon absorption radiography.
DING Wenwan;LIU Yuanyuan;WANG Li;SU Ning;CHENG Jianping;HAN Jianwu;ZHEN Gang
doaj
Comment on "Stress induction in the bacteria Shewanella oneidensis and Deinococcus radiodurans in response to below-background ionizing radiation", Castillo, et al. Int. J. Rad. Biol., 2015; Early Online DOI:10.3109/09553002.2015.1062571 [PDF]
Int. J. Rad. Biol. 92, 169 (2016), 2015 Castillo, et al. report hormesis by background levels of radiation, at which there is $< 10^{-3}$ ionization per bacterium in a replication time. This suggests radiation products accumulate in the growth medium over much longer times. Experiments are proposed to test this hypothesis.
arxiv +1 more source
Design and Analysis of a Moon-Based Earth-Radiation Measurement System
Remote SensingThis research project envisions using a lunar observation platform to measure the full-wave (0.2~100 μm) and shortwave (0.2~4.3 μm) radiation of the Earth, achieving an accurate estimation of the overall radiation budget of the Earth.
Shuqi Li +9 more
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