In recent years, because of the advantage of radiation technology-low energy, clean, environmental protection, etc., so that the use of radiation technology for polymer synthesis or processing research continues to heat up; however polymer materials irradiated via high-energy radiation prone to produce free group or to react with atomic oxygen in the air, resulting in the material cracking, cro...

So-called perfusion examinations using a computer tomograph are very helpful for quickly making an accurate diagnosis following a stroke. However, they expose the patient to radiation. Dr. Rainer Raupach, who works on the development of new medical technology systems at the Siemens plant in Forchheim, has discovered a new method of image processing that reduces the radiation exposure by up to 7...

introduction: ionizing radiations are the hazardous agents in the workplace and all forms of ionizing radiation produce some type of injuries. awareness of application of protection guidelines and knowledge of the principles of radiation protection can play an important role in health of employees. survey of radiation employee’s levels of awareness and practical behavior is essential and should...

precipitation and air temperature data, only, are often recorded at meteorological stations, with radiation beingmeasured at very few weather stations, especially in developing countries. therefore there arises a need for suitablemodels to estimate solar radiation for a completion of data sets. this paper is about an evaluation of eight models foran estimation of daily solar radiation (q) from ...

background: seaweeds contain significant quantities of lipids, protein, vitamins and minerals. aquavac ergosan contains 1% alginic acid extracted from two brown seaweeds, laminaria digitata and ascophyllum nodosum. both in vivo and in-vitro researches have mainly been focused on the effect of ergosan on fish growth, survival rate, reproductive performance and innate immunity in blood and epider...

background:  the aim of the study was to estimate the radiation dose during emergency exposure to patients treated with iodine-131 during the isolation period. materials and methods: the dose rate from a sample of 192 patients administrated by three different radioactivity of 131i (3.7, 5.55 and 7.4 gbq) was measured, at 1 meter after 1, 24 and 48 hours post dose administration, at three differ...

background: in order to deliver the precise dose to the target in radiotherapy, absorbed dose to water at the reference point should be assessed. when the calibration procedure is performed for a reference dosimeter in the 60co beam of a secondary standard dosimetry laboratory (ssdl), the total uncertainty in absorbed dose to water (dw) is estimated to be approximately 1.5%. this study attempts...

background: hot lab is a specially designed room in a nuclear medicine hospital where the radiopharmaceuticals are delivered, stored and prepared for dispensing. 99mo/99mtc-generator is the major source in the hot lab used for various medical imaging. it is important to maintain a standard for hot lab procedures to optimize the patient care and minimize radiation exposure to all nuclear medicin...

The surface of the biomass monitoring is blocked rotational grazing land prerequisite for high scores (GF - 1) satellite multispectral image and artificial index test, using ENVI software GF1 or GF6 data (radiation calibration atmospheric correction RPC orthographical correction), then calculate vegetation (NDVI), NDVI can detect growth status, coverage eliminate part radiation error manual col...

Over the last 7 years, we have focused our experimental and computational research efforts on improving our understanding of the biochemical, molecular, and cellular processing of iododeoxyuridine (IUdR) and ionizing radiation (IR) induced DNA base damage by DNA mismatch repair (MMR). These coordinated research efforts, sponsored by the National Cancer Institute Integrative Cancer Biology Progr...