background: the radioactivity levels in sediment and rock samples of i̇kizdere and kaptanpaşa valley have been determined. to our knowledge, there seems to be no information about radioactivity level in the i̇kizdere and kaptanpaşa valley sediments and rocks so far. materials and methods: the average radium equivalent activity (raeq), the total absorbed dose rate (d), the external risk index (hex...

Vitamin D3 (or its physiologic equivalent, ergocalciferol), administered at a dose of 100,000 IU every 4 months for 5 years, is effective for primary prevention of fractures in the active elderly aged 65 to 85 years. This treatment regimen has no effect on cardiovascular, cancer, or all-cause mortality. Despite a seemingly large dose averaging 800 IU per day, this regimen is a safe, cheap (<$2 ...

If the neutron fields at personnel workplaces differ from in which individual dosimeters are verified, there is a possibility of additional errors assessment such dosimetric quantities as ambient dose equivalent, equivalent or effective dose. To take into account energy distribution radiation flux density and geometry irradiation workers, it necessary to study characteristics personnel. In orde...

Estimating effective doses of novel HIV vaccines is challenging. Dose-response analyses of DNA and fowlpox virus HIV vaccines showed that 1 mg of DNA vaccine and 5 x 10(7)pfu of fowlpox virus booster was immunogenic in macaques. However, this dose was poorly immunogenic in humans. When adjusted for body surface area, the human dose studied was equivalent to a poorly immunogenic lower dose in mo...

Background: The present work aims to determine the activity concentrations of 226Ra, 233Th and 40K in soil samples collected in Mounana in the Southeastern region of Gabon, to evaluate the contribution of the natural. Materials and Methods: An HPGe p-type detector coupled with a multichannel analyzer DSA-1000 was used to perform measurements and process data. Data acquisition and analysis were ...

background: in this study the basic radiation properties of n-isopropylacrylamaide polymer gel dosimeter were determined together with verification of its soft tissue equivalency. materials and methods: the nipam gel was prepared and irradiated approximately 2 h after manufacturing. the magnetic resonance (mr) images were made 24 h after irradiation. the nuclear magnetic resonance (nmr) respons...

A number of regional Internet electronic marketplaces (REMs) have failed or are floundering, partly due to the lack of proper evaluation of their costs and benefits. This paper uses a conceptual REM Success Model to examine the costs and benefits of a REM in Western Australia. The model has been derived from an extension to the Updated DeLone & McClean IS Success Model. The findings from the ca...