نتایج جستجو برای: radiation biology
تعداد نتایج: 397917 فیلتر نتایج به سال:
Radiation exposure to astronauts could be a significant obstacle for long duration manned space exploration because of current uncertainties regarding the extent of biological effects. Furthermore, concepts for protective shielding also pose a technically challenging issue due to the nature of cosmic radiation and current mass and power constraints with modern exploration technology. The concer...
Abstract Radiotherapy plays an important role in the management of pancreatic ductal adenocarcinoma (PDAC), especially when patients are not surgical candidates. Radiation-induced tumor death provokes acute inflammation followed by a late-fibrotic response that parallels fibroinflammatory microenvironment PDAC, inciting question whether radiation-induced fibrosis contributes to PDAC progression...
Ontario Cancer Institute, University Health Network, Toronto, Ontario, Canada Division of Biostatistics, Princess Margaret Cancer Center, University Health Network Division of Signaling Biology, Ontario Cancer Institute Department of Pathology, University Health Network Department of Radiation Oncology; Princess Margaret Cancer Center, University Health Network Department of Radiation Oncology;...
This article outlines various studies which have shown a change in the measured gamma radiation near bioenergy healers. Contained herein is a theoretical explanation for these findings based upon an expansion of current concepts in physics and biology.
Combined modality therapy emerged from preclinical data showing that carefully chosen drugs could enhance the sensitivity of tumor cells to radiation while having nonoverlapping toxicities. Recent advances in molecular biology involving the identification of cellular receptors, enzymes, and pathways involved in tumor growth and immortality have resulted in the development of biologically target...
Clade-specic morphological diversication and adaptive radiation in Hawaiian songbirds Irby J. Lovette, Eldredge Bermingham and Robert E. Ricklefs Cornell Laboratory of Ornithology and Department of Ecology and Evolutionary Biology, Cornell University, 159 Sapsucker Woods Road, Ithaca, NY 14850, USA Smithsonian Tropical Research Institute, PO Box 2072, Balboa, Panama Department of Biology, Uni...
To establish the maximum permissible radiation doses for occupational and other kinds of radiation exposure, it is necessary to know those biological effects which can be produced by very small radiation doses. This particular field of radiation biology has not yet been sufficiently explored. This holds true for possible delayed damage after occupational radiation exposure over a period of many...
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