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Structure of a designed tetrahedral protein assembly variant engineered to have improved soluble expression
Abstract not provided
An experimentally calibrated thermobarometric solubility model for titanium in coesite (TitaniC)
Abstract not provided
Biocompatible Water Soluble Polyacrylic Acid Coated CdSe/Cu Quantum Dot Conjugates for Biomolecule Detection
Biocompatible polyacrylic acid functionalized CdSe/Cu quantum dot conjugates were synthesized to be used for biomolecules detection. The study results demonstrate the conjugation of the 2.5-3 nm QD with gram negative bacteria with a low detection limit of 28 cfu/ml. The photoluminescence (PL) intensity was correlated to bacterial count, cellular proteins and exopolysaccharides in the tested samples. Confocal Scanning Laser Microscopy (CSLM) images showed significant QD uptake within the cells, both cytoplasm and DNA were the predominant targeted biomolecules, higher fluorescent uptake was shown in gram negative bacteria than that observed for gram positive bacteria. Moreover, PL showed that there was a distinction between live and dead cells as well as gram negative and gram positive cells. Cell viability was not affected even after 6 days (100% viability) rendering it a non-toxic QD. The method is simple and is performed in a single step within approximately 10 min as compared to multi-step protocols for classical microbial count or fluorescent dye staining. All the above results indicate that the CdSe/Cu-PAA QDs are suitable for biomolecule detection, bio-labeling and bioimaging applications.
DFT studies of the electron density distribution and donor-acceptor interactions in water-soluble aminohydroximate metallamacrocyclic Ca{sup II} and Y{sup III} complexes
The topology of the electron density and the nature of donor-acceptor interactions in copper-based glycinehydroximate metallamacrocycles bearing calcium(II) and yttrium(III) have been studied for the first time in terms of the density functional theory (DFT). The DFT calculations at the M06/Def2-TZVP level were performed taking into account non-specific (PCM) and specific solvation. Quantitative estimations of the donor-acceptor interactions and topological properties of the electron density were obtained. According to them, the thermodynamic stability of the yttrium complex is higher than that of the calcium analog. The calculated values of the Gibbs energy changes indicate the spontaneous substitution of Ca{sup 2+} by Y{sup 3+} in the metallamacrocycle in an aqueous medium.
The Thermoelectric Properties and Solubility Limit of CuFeS 2(1-x) Se 2x
CuFeS 2 is an earth-abundant material with a potential for use in thermoelectric power generation. It is an n-type semiconductor with a small band gap, a large thermopower, and a low electrical resistivity. Previous studies have focused on the electrical properties and doping the material, to some success. In this study, we investigate the effects of selenium substitution on the sulfur site in an attempt to lower thermal conductivity while maintaining good electrical properties. Here, our results shows that selenium substitution is an effective method of improving zT through a large increase in power factor, and works well for reducing thermal conductivity at room temperature, but is not as effective in this regard at higher temperatures.
Radiation-induced mixing between metals of low solid solubility
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Inventory and solubility of fission products in molten lead to quantify source term in lead-cooled fast reactors
Not provided.
Quantization of soluble classical constrained systems
The derivation of the brackets among coordinates and momenta for classical constrained systems is a necessary step toward their quantization. Here we present a new approach for the determination of the classical brackets which does neither require Dirac’s formalism nor the symplectic method of Faddeev and Jackiw. This approach is based on the computation of the brackets between the constants of integration of the exact solutions of the equations of motion. From them all brackets of the dynamical variables of the system can be deduced in a straightforward way.
Improved geochemical modeling of lead solubility in contaminated soils by considering colloidal fractions and solid phase EXAFS speciation
Not Available
Evidence of the mineral ZnHAsO4·H2O, koritnigite, controlling As(V) and Zn(II) solubility in a multi-contaminated soil
Not Available
Corn distiller's dried grains with solubles: Apparent digestibility and digestive enzymes activities in European seabass (Dicentrarchus labrax) and meagre (Argyrosomus regius)
Not Available
Soluble FLT-1 rules placental destiny
Highlights: • Placenta previa is an obstetric complication which can cause massive hemorrhage. • Some pregnant women recover from placenta previa due to a phenomenon called “migration” of the placenta. • The sFLT-1 expression level is locally high in the caudal part of the human placenta in patients with placenta previa. • In mice, sFlt-1 expression level was significantly increased by ablation of uterine arteries. • Our study suggests that “migration” of the placenta is derived from placental degeneration and sFlt-1 plays an important role in placental degeneration. Placenta previa is an abnormality in which the placenta covers the internal uterine os, and it can cause serious morbidity and mortality in both mother and fetus due to catastrophic hemorrhage. Some pregnant women recover from placenta previa due to a phenomenon called “migration.” However, the mechanism of “migration” of the placenta has not been elucidated.
Sesaminol diglucoside, a water-soluble lignan from sesame seeds induces brown fat thermogenesis in mice
Highlights: • Aqueous extract of black sesame seeds induces brown fat thermogenesis in mice. • SDG purified from the aqueous sesame extract prevents weight gain in HFD fed mice. • SDG induces brown fat thermogenesis through β3-adrenergic receptors. Brown adipose tissue (BAT) is the site of non-shivering thermogenesis in mammals, wherein energy is dissipated as heat. We observed that aqueous extract of black sesame seed triggers an increase in the expression of Uncoupling Protein 1 (UCP1) in brown adipocytes from mice. The active component from the extract was purified and identified to be sesaminol diglucoside (SDG). SDG treatment decreased mass of white fat pads and serum glucose levels and increased UCP1 levels in BAT thereby protecting mice against high fat induced weight gain. Further in silico and in vitro studies revealed that these effects are due to the agonist like behaviour of SDG towards beta 3 adrenergic receptors (β3-AR). Together, our results suggest that SDG induces BAT mediated thermogenesis through β3-AR and protects mice against diet-induced obesity.