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“Information on arsenic (As) speciation in solid materials is critical for many environmental studies concerned with As stability and/or mobility in natural As-impacted soils and mining or industrial sites contaminated by As. The investigation of these systems has provided evidence for a number of secondary As minerals that have often played a significant role in As mobility in the solid phase-water system. This paper presents a list of environmentally ASA-404 important secondary As minerals in contaminated soil and waste systems, summarizes the information about their origin, occurrence, environmental stability and thermodynamics,

and proposes several important avenues for further investigation. (C) 2009 Elsevier Ltd. All rights reserved.”
“Recombinant bovine somatotropin

(rbST) is produced in large quantities and widely used in a number of countries worldwide to stimulate milk production and as a general growth promoter in meat-producing animals. The use of this compound in animal production is strictly regulated by food-safety directives, particularly in the European Union. We give an overview of the state of the art in the detection of rbST-treated animals. (C) 2013 Elsevier B.V. All rights reserved.”
“Objective: To study the association of f beta-hCG and PAPP-A measured at 11-14 weeks of gestation with delta crown-rump-length (dCRL), delta fetal heart rate (dFHR) and delta nuchal translucency (dNT). To calculate adjusted MoM taking into consideration these associations. Methods: Retrospective cross-sectional study on 5,536 singleton euploid pregnancies participating in a first trimester screening program Verubecestat datasheet for chromosomal abnormalities by nuchal translucency and maternal serum biochemistry. Adjusted MoM were calculated for f beta-hCG and PAPP-A buy Sepantronium and compared to the observed MoM (calculated by the Fetal Medicine Foundation screening algorithm). Results: f beta-hCG correlates positively with dCRL and negatively with dNT, whereas PAPP-A shows a positive correlation with dNT and a negative

one with dCRL and dFHR. After adjustment for the ultrasound parameters, the median MoM values for f beta-hCG and PAPP-A changed from 1.02 and 0.92 observed MoM to 0.98 and 0.99 adjusted MoM respectively. The difference between the observed and adjusted MoM was statistically significant (p < 0.001). Delta CRL increases with gestation and this effect manifests mainly after CRL of 62 mm. Conclusions: Adjustment for dCRL, dFHR and dNT improves the calculation of MoM for f beta-hCG and PAPP-A. CRL measurement overestimates fetal size at the end of the screening period 11-14 weeks.”
“DNA hairpin-based fluorescent probes (DHFPs) are widely used in molecular biology, biosensor development, mRNA monitoring in living cells and imaging in vivo. In this review, we focus on the typical designs and the recent bioanalytical applications of DHEPs.