Results 61 to 70 of about 6,180,384 (229)
Evolutionary Applications, 2021 The evolution in the definition of crop yield—from the ratio of seed harvested to seed sown to the contemporary measure of mass of seed per unit land area―has favoured less competitive phenotypes.
C. Mariano Cossani, Victor O. Sadras
doaj +1 more source
Particulate and solar radiation stable coating for spacecraft [PDF]
, 1977 A laminate thermal control coating for spacecraft comprising a layer of solar radiation stable film, a layer of particulate radiation stable film applied to the upper surface of the solar radiation stable film, and a layer of reflecting material applied ...
Slemp, W. S.
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Radiative transfer in ultra-relativistic outflows
, 2011 Analytical and numerical solutions are obtained for the equation of radiative transfer in ultra-relativistic opaque jets. The solution describes the initial trapping of radiation, its adiabatic cooling, and the transition to transparency.
Andrei M. Beloborodov +11 more
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Molecular Mechanisms of Radiation-Induced Cancer Cell Death: A Primer
Frontiers in Cell and Developmental Biology, 2020 Radiation therapy (RT) is responsible for at least 40% of cancer cures, however treatment resistance remains a clinical problem. There have been recent advances in understanding the molecular mechanisms of radiation-induced cell death.
J. Sia, Radosław Szmyd, E. Hau, H. Gee
semanticscholar +1 more source
Multiplate focusing collimator [PDF]
, 1975 An appartus is described for scanning relatively small near sources of penetrating radiation to obtain the energy distribution thereof, wherein a collimator assembly is interposed between a radiation source and a radiation detector.
Hoover, R. B., Underwood, J. H.
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Quantitative assessment of Earth’s radiation belt modeling [PDF]
, 2017 The “Quantitative Assessment of Radiation Belt Modeling” focus group was in place at Geospace Environment Modeling from 2014 to 2018. The overarching goals of this focus group were to bring together the current state‐of‐the‐art models for the ...
Albert, J. M. +3 more
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Low Dose Computed Tomography in Diagnosis of Ureteric Calculus in Obese Patients
Journal of Nobel Medical College, 2020 Background: Standard dose computed tomography is standard imaging modality in diagnosis of urolithiasis. The introduction of low dose techniques results in decrease radiation dose without significant change in image quality. However, the image quality of
Mahesh Gautam +2 more
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Radiation Pressure in Massive Star Formation [PDF]
, 2005 Stars with masses of >~ 20 solar masses have short Kelvin times that enable them to reach the main sequence while still accreting from their natal clouds.
Klein, Richard I. +2 more
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Exotic radiation from a photonic crystal excited by an ultra-relativistic electron beam [PDF]
, 2006 We report the observation of an exotic radiation (unconventional Smith-Purcell radiation) from a one-dimensional photonic crystal. The physical origin of the exotic radiation is direct excitation of the photonic bands by an ultra-relativistic electron ...
C. Kittel +15 more
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Cancer and Radiation Therapy: Current Advances and Future Directions
International Journal of Medical Sciences, 2012 In recent years remarkable progress has been made towards the understanding of proposed hallmarks of cancer development and treatment. However with its increasing incidence, the clinical management of cancer continues to be a challenge for the 21st ...
R. Baskar, Kuo Ann Lee, R. Yeo, K. Yeoh
semanticscholar +1 more source