Correlational Approach to Predict the Enthalpy of Mixing for Chloride Melt Systems.

A methodology to estimate the heat of mixing (Δ ) for salt liquids in unexplored AkCl-AnCl /LnCl (Ak = alkali, An = actinide, Ln = lanthanide) systems is developed. It improves upon previous empirical approaches by eliminating the need for arbitrarily choosing the required composition at maximum short-range ordering, the minimum Δ prior to performing the estimation, which avoids the intrinsic ambiguity of that approach. This semiempirical method has computationally reproduced the behavior of NaCl-UCl and KCl-UCl systems, providing Δ values that agree well with the reported measurements within a propagated two standard deviations (2σ).

SiO:P,Dy nano-thin film phosphor: Synthesis, structure and luminescence properties.

A nano-sized thin film layer of phosphorus-dysprosium doped silicon oxide (SiO:P,Dy) was successfully synthesized using the sol-gel method combined with spin coating technique. The surface morphology, structure, and luminescence properties of the synthesized thin film were characterized using Atomic Force Microscopy (AFM), Scanning Electron Microscopy (SEM), X-ray Diffraction (XRD), Fourier Transform Infrared-Attenuated Total Reflectance (FTIR-ATR), and Photoluminescence (PL). The average surface roughness was measured as 22.

Natural radioactivity of riverbank sediments of the Maritza and Tundja Rivers in Turkey.

This article represents the first results of the natural radionuclides in the Maritza and Tundja river sediments, in the vicinity of Edirne city, Turkey. The aim of the article is to describe the natural radioactivity concentrations as a baseline for further studies and to obtain the distribution patterns of radioactivity in trans-boundary river sediments of the Maritza and Tundja, which are shared by Turkey, Bulgaria and Greece. Sediment samples were collected during the period of August 2007-April 2010.

Activity concentration of caesium-137 in agricultural soils.

In this study, we measured 137Cs activity concentrations in the soil samples taken from agricultural lands in the Buyuk Menderes Basin in Turkey in 1997 and 1998. The soil samples were collected from 42 sites in this Basin. The activity concentration of 137Cs was found to range between 2.

A correlative study between 99mTc-ESTCPTA and 99mTc-MIBI in rats.

Tissue distribution of the 99mTc labeled derivative of the estrogen compound 3,17-alpha-estradiolyl propyl 1,4,8,11-tetraazacyclotetradecanyl-l-(4-methylbenzoic acid) ester (ESTCPTA), which has an 3,17-alpha-estradiolyl propinol coupled to l-(4-methylbenzoic acid)1,4,8,11-tetraazacyclotetradecane (CPTA), was compared to 99mTc-MIBI (methoxyisobutyl isonitrile) in female Albino Wistar rats. Tissues of interest included lung, liver, heart, kidneys, spleen, stomach, intestines, pancreas, muscle, blood, breast, ovary, fat, and uterus. 99mTc-ESTCPTA uptake by the uterus and ovary, as ER-rich tissues, was highly selective.