Distinct rectifying current-voltage characteristics are observed for junctions between Zn-Co-O and n-type InGaZnO films, exhibiting a threshold voltage of similar to 2.5 V. P-type Zn-Co-O appears promising for thin-film electronic
device technology. AZD6094 molecular weight (C) 2010 American Institute of Physics. [doi:10.1063/1.3415543]“
“Background: Biomarkers of iodine status are required to study iodine deficiency disorders in different parts of the world and to evaluate the effects of fortification strategies.
Objective: The objective was to assess the usefulness of biomarkers of iodine status in humans by systematically reviewing intervention studies that altered iodine status.
Design: We performed a structured search for iodine intervention studies on Ovid MEDLINE, EMBASE (Ovid), and the Cochrane Library. Studies
were assessed for inclusion and validity, with independent duplication. A random-effects meta-analysis was performed.
Results: Twenty-one intervention studies (12 randomized controlled trials, 3 controlled clinical trials, and 6 before-after studies) were included in the review. Urinary iodine (in children and adolescents and in those with low and moderate baseline iodine status), thyroglobulin (in children and adolescents but not in pregnant and lactating women), SRT2104 order serum thyroxine (in children and adolescents, adults, women, and those with moderate baseline thyroxine status but not in pregnant and lactating women), and serum thyroid-stimulating hormone (in pregnant and lactating women but not in children and adolescents or those at moderate baseline status), but not triiodothyronine, proved to be useful biomarkers of iodine status.
Conclusions: Despite the high risk of bias of many of the included studies, the results suggested that urinary iodine, thyroglobin, serum thyroxine, and thyroid-stimulating hormone are useful biomarkers of iodine status, at least in some
groups. High-quality controlled studies measuring relevant long-term outcomes are needed to address which biomarker is the most appropriate for assessing iodine intake in some population groups and settings. Am J Clin Nutr 2009; 89(suppl): 2052S-69S.”
“Arabidopsis thaliana was thought to contain PXD101 in vivo two spermine synthase genes, ACAULIS 5 (ACLS) and SPMS. Recent investigations, however, revealed that the ACL5 gene encodes thermospermine synthase. In this study, we have established a simple method to separate two isomers of tetraamine, spermine and thermospermine, in extracts from plant tissues of less than 500 mg. Polyamines (PAs) extracted from plant tissues were benzoylated, and the derivatives were completely resolved by high-performance liquid chromatography on a C(18) reverse-phase column, by eluting with 42% (v/v) acetonitrile in water in an isocratic manner at 30 degrees C and monitoring at 254 nm.