Some effects of nuclear radiation exposure on the behavior of the rhesus monkey.

1958 ◽  
Author(s):  
A. A. McDowell ◽  
W. Lynn Brown
Keyword(s):  
Rhesus Monkey ◽  
Radiation Exposure ◽  
Nuclear Radiation

Recent advances in nuclear radiation protective clothing materials

2021 ◽  
Vol 11 (8) ◽  
pp. 1255-1268
Author(s):  
Feiran Hao ◽  
Wei Zhou ◽  
Yue Gao
Keyword(s):  
Radiation Exposure ◽  
Thermal Neutron ◽  
Material Science ◽  
Protective Clothing ◽  
Exposure Dose ◽  
Nuclear Radiation ◽  
Neutron Shielding ◽  
X Ray ◽  
Existing Problems ◽  
Radiation Exposure Dose

With the development of science and technology, the opportunities for military forces and general citizens to be exposed to a radioactive environment have greatly increased. It is urgent to establish a mature nuclear, biological and chemical protection system, of which nuclear radiation protective clothing is a vital part. Radiation protective clothing is clothing that ensures the protection of people in a radioactive environment by reducing the radiation exposure dose. Owing to the advances in material science, it is possible to develop radiation protective clothing with better performance. In this review, we focus on X-ray, γ-ray and thermal neutron shielding and elaborate on the following 3 aspects by citing a variety of examples: methods for measuring the shielding performance of radiation protective clothing, radiation protective clothing materials and the prospects and existing problems. In addition, a number of commercial nuclear radiation protective clothing is introduced, and their evaluation is expounded to explain the problems.

scholarly journals Autophagy confers DNA damage repair pathways to protect the hematopoietic system from nuclear radiation injury

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Weiwei Lin ◽  
Na Yuan ◽  
Zhen Wang ◽  
Yan Cao ◽  
Yixuan Fang ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Dna Damage ◽  
Radiation Exposure ◽  
Radiation Injury ◽  
Dna Damage Repair ◽  
Nuclear Radiation ◽  
Hematopoietic System ◽  
Damage Repair ◽  
Repair Pathways

Abstract Autophagy is essentially a metabolic process, but its in vivo role in nuclear radioprotection remains unexplored. We observed that ex vivo autophagy activation reversed the proliferation inhibition, apoptosis and DNA damage in irradiated hematopoietic cells. In vivo autophagy activation improved bone marrow cellularity following nuclear radiation exposure. In contrast, defective autophagy in the hematopoietic conditional mouse model worsened the hematopoietic injury, reactive oxygen species (ROS) accumulation and DNA damage caused by nuclear radiation exposure. Strikingly, in vivo defective autophagy caused an absence or reduction in regulatory proteins critical to both homologous recombination (HR) and non-homologous end joining (NHEJ) DNA damage repair pathways, as well as a failure to induce these proteins in response to nuclear radiation. In contrast, in vivo autophagy activation increased most of these proteins in hematopoietic cells. DNA damage assays confirmed the role of in vivo autophagy in the resolution of double-stranded DNA breaks in total bone marrow cells as well as bone marrow stem and progenitor cells upon whole body irradiation. Hence, autophagy protects the hematopoietic system against nuclear radiation injury by conferring and intensifying the HR and NHEJ DNA damage repair pathways and by removing ROS and inhibiting apoptosis.

scholarly journals Measuring of Ionizing Radiation and CO2 Gas Concentration in Air of the Falluja City in Iraq

2021 ◽  
Vol 2114 (1) ◽  
pp. 012027
Author(s):  
N A Ahmed
Keyword(s):  
Ionizing Radiation ◽  
Radiation Exposure ◽  
Data Visualization ◽  
Google Earth ◽  
Nuclear Radiation ◽  
Visualization Method ◽  
Co2 Gas ◽  
Gas Concentration

Abstract In this work, large nuclear radiation and CO2 readings have been achieved in Falluja city; hundreds of measurements have been collected in many places and streets. The vast data was processed by a new data visualization method, which makes all the data appear on the map using Google Earth Pro software. The lowest average exposure of ionizing radiation in the air is 1.314mSv/y for the first part of Falluja sector1, while the highest one is 1.5768mSv/y in sector2. The average radiation exposure in the air for people in Falluja city is 0.9732 mSv/y.

Life and Nuclear Radiation: Chernobyl and Fukushima in Perspective

2011 ◽  
Vol 2 (3) ◽  
pp. 373-375
Author(s):  
Wade Allison
Keyword(s):  
Radiation Exposure ◽  
Nuclear Power ◽  
Nuclear Radiation ◽  
The Media

An increased use of nuclear power is now accepted as inevitable by many people, but not without some unease, and the accidents at Chernobyl and Fukushima as described in the media bring little reassurance. So how dangerous is radiation exposure, for instance to those living within the influence of such accidents?

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