نتایج جستجو برای: ionizing irradiation
تعداد نتایج: 76474 فیلتر نتایج به سال:
The paper highlights the issues of ionizing radiation occurrence at electrophysical installations, their properties, substantiates, need to equip KTM Tokamak installation with a stationary, automated field monitoring system, offers set engineering solutions based on results analysis irradiation data and general safety requirements. It is shown that proposed will allow recording process paramete...
Radiation-induced lung injury is one of the most prominent factors that interfere with chest cancer radiotherapy, and poses a great threat to patients exposed to total body irradiation. Upregulation of pro-oxidant enzymes is one of the main mechanisms through which the late effects of ionizing radiation on lung injury can be exerted. Interleukin (IL)-4 and IL-13 are two important cytokines that...
background: ionizing radiation causes cognitive impairment in adult brain. however, the effects of various irradiation protocols with fractionated fixed total dose on hippocampal function have not yet been studied. materials and methods: fractionated whole brain irradiation with a total dose of 36 gy was performed according to the following protocols: 2gy-18 fractions (2gy*18), 4gy-9 fraction (...
Many studies suggest that exogenous antioxidants may protect cells against DNA damage caused with ionizing radiation. One of the most powerful antioxidants is lycopene (LYC), a carotenoid derived from tomatoes. The aim of this study was to investigate, using the comet assay, whether LYC can act as protectors/modifiers and prevent DNA damage induced in human blood lymphocytes, as well as to miti...
Recent interest in liquid crystal spatial light modulators as a potential replacement to traditional optical beam steering methods have engendered experiments to determine the technology’s resistant to gamma radiation such as may be encountered in a space environment. We previously investigated the effects of exposure of liquid crystal devices to ionizing radiation to total dose levels consiste...
Background: Our purpose was to investigate propolis and its component caffeic acid phenethyl ester (CAPE) for their antioxidant effects on the brain tissue of rats exposed to ionizing radiation (IR). Materials and Methods: Fifty-four male albino Sprague-Dawley rats, divided into six groups, were designed as normal control group, cranial irradiation of 5 Gray alone, irradiation plus CAPE, irradi...
Phytosanitary irradiation (PI) treatments are promising measures to overcome quarantine barriers to trade and are currently used in several countries. Although PI has advantages compared with other treatments one disadvantage bedevils research, approval, and application: organisms may remain alive after importation. Although this does not preclude their use as a phytosanitary treatment, it does...
Introduction: Exposure to ionizing radiation can trigger adverse biological effects on healthy tissues, such as causing hematological toxicity and potential injury to different organs. Ionizing radiation has sufficient energy to liberate electrons from atoms leaving them with unpaired electrons; hence ionizing them and producing free radicals. In the current study, the...
AIMS To compare three bacterial DNA extraction procedures on cold-smoked salmon (CSS) and assess the impact on their efficiency of two physical treatments of the food matrix, ionizing irradiation and freezing. METHODS AND RESULTS As molecular methods for bacterial detection have become an important analytical tool, we compared bacterial DNA extraction procedures on CSS. Working with frozen an...
Human mammary tumor cells in continuous culture (MCF-7 cells) are hormone- and radiosensitive. The interaction of both factors is analyzed. Ionizing irradiation lowers the concentration of both the estradiol and progesterone receptors per cell. The reduction is dose dependent. However, the effects on the cytoplasmic and nuclear forms of the receptors are not similar. For the estradiol receptor,...
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