Results 91 to 100 of about 493,079 (334)
Review on studies in natural background radiation
Radiation Protection and Environment, 2018 The environment around us is radioactive due to background radiation emitted from the sky, earth's crust, food, water, and building materials. The human body gets exposed to radiation doses of about 82%, which are out of control; they arise from ...
Abdu Hamoud Al-Khawlany +2 more
doaj +1 more source
Blackbody radiation drag on a relativistically moving mirror [PDF]
arXiv, 2009 We compute the drag force on a mirror moving at relativistic velocity relative to blackbody radiation background.
arxiv
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Background To assess the dose‐sparing capabilities of a yaw‐limited volumetric modulated arc therapy (YL_VMAT) beam setup for adjacent organs at risk (OAR) in comparison with 3D‐conventional radiation therapy (3D‐CRT), intensity‐modulated radiation therapy (IMRT) and conventional VMAT for radiation therapy in left‐sided breast cancer patients.
Gerhard Pollul +4 more
wiley +1 more source
Alternative application for the radiation background in the development of the atlas database of atmospheric radiation [PDF]
arXiv, 2014 Nowadays radiation is one of the variables to be considered in the environmental forecasting and it is meaningful in the increase of global warming, together greenhouse effect. The radiation considered by the meteorological organizations depends on the World Radiometric Reference (WRR), the World Standard Group (WSG), addressed by the World ...
arxiv
Commissioning evaluation of a deviceless 4DCT scanner
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Background The utilization of four‐dimensional computed tomography (4DCT) for radiation therapy has not seen major advances to the method of data binning since shortly after inception. Recently there is increased interest in the utilization of an alternative binning method rather than more established techniques.
Hunter Tillery +2 more
wiley +1 more source
Unitary black hole radiation: Schwarzschild-global monopole background
European Physical Journal C: Particles and Fields, 2019 Black hole radiation from an infinitesimally thin massive collapsing shell, possessing a global monopole charge, which in turn leads to a Schwarzschild black hole with a global monopole charge has been shown to be processed by a unitary evolution.
Arpit Das, Narayan Banerjee
doaj +1 more source
The Extragalactic Background Radiation —1989 [PDF]
Symposium - International Astronomical Union, 1990 This symposium has brought back many happy memories of the time 20 years ago when Rashid Sunyaev and I surveyed what was known about the extragalactic background radiation at that time. In one of our papers of 1969, we published a simple representation of the extragalactic background radiation spectrum, as it was known then (Figure 1).
openaire +1 more source
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Background Acceleration treatment (AT) is a novel treatment planning parameter introduced in the tomotherapy‐dedicated treatment planning system, Precision. This study explores the effects of AT on tomotherapy plans using helical (TomoHelical) and direct (TomoDirect) irradiation techniques.
Ryosuke Shirata +9 more
wiley +1 more source
Comparative study between radiation exposure in common urological procedures
Beni-Suef University Journal of Basic and Applied SciencesBackground Fluoroscopy has become essential to urological surgery since advancement of endourology. Fluoroscopy use has increased, placing urologists as well as staff members at risk for occupational radiation exposure and related dangers.
Akrm A. Elmarakbi +3 more
doaj +1 more source
Spectrum of Galactic Background Radiation [PDF]
Symposium - International Astronomical Union, 1974 New measurements of the galactic background radiation between 151 and 1407 MHz have been made by Sironi and by Webster. The radio spectrum shows a bend at ~ 315 MHz in Bridle's Region I and ~ 100 MHz in Region II, implying magnetic fields of 7.6 µG and 2.4 µG, respectively.
openaire +2 more sources