Materials Literature
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The cleaning of GaN(2¯110) surfaces was investigated by x-ray photoelectron spectroscopy, scanning tunneling microscopy, and low-energy electron diffraction. Two different two-step cleaning methods, performed under ultrahigh-vacuum conditions, were carried out and compared. The first cleaning step of both methods is t…
Novel paramagnetic selective angiotensin AT(1) receptor antagonists (sartans) bearing nitroxides (3, 4) have been prepared and their pharmacology evaluated in vitro as well as in vivo. Compounds 3, 4 proved to be effective sartans with pK(B) estimates in the range 6.2-9.1. In addition, the sodium salt (11) of 4 (R = B…
Temperature dependence of chemical potential was determined for n-type Bi2Se3 and p-type Bi2Te3 thermoelectric materials by means of angle resolved photoemission spectroscopy, and the determined chemical potential was compared with the measured thermoelectric power. We found that the temperature dependence of chemical…
The inhibition action of 3-ethyl-4-amino-5-mercapto-1,2,4-triazole (EAMT) on the corrosion of 6061-Al alloy in different concentrations of aqueous sodium hydroxide solution has been investigated at different temperatures, using potentiodynamic polarization and electrochemical impedance spectroscopic techniques. The su…
The photoanode of dye-sensitized solar cell (DSSC) was fabricated using two-dimensional ZnO nanosheets (2D ZnO NSs) sensitized with beta-substituted porphyrins photosensitizer, and its photovoltaic performance in solid-state DSSC with TiO2nanotubes (TiO2TNs) modified poly (ethylene oxide) (PEO) polymer electrolyte was…
A visible light triggered protein delivery system has been assembled through hydroxyl coordinated onto titania nanoparticles. Biomolecules such as hemoglobin (Hb) can be controlled-released from the hybrid material TiO(2)-DB-Hb by switching visible light on/off. The released Hb not only retains its senior structure bu…
This study investigated the influence of rhenium on the mechanical behavior and fracture mechanism of a fine-grain Mar-M247 superalloy at elevated temperatures. Tensile test results showed that the addition of 3 mass% Re significantly improved the ultimate tensile strength and yield strength from room temperature to 7…
Thermo-sensitive poly(N-isopropylacrylamide) hydrogel was used as a matrix polymer to immobilize polydiacetylenes (PDAs) vesicles. Blue-red chromic transition of PDAs was observed at lower temperature, compared to PDAs vesicle dispersion. The tuned chromic process was due to the interaction between matrix polymer and…
The problem of a homogeneous linear elastic body containing multiple collinear cracks under anti-plane dynamic load is considered in this work. The cracks are simulated by distributions of dislocations and an integral equation relating tractions on the crack planes and the dislocation densities is derived. The integra…
This study investigated whether elevated host immune capacity can inhibit T. gondii infection. For this purpose, we used silk protein extracted from Bombyx mori cocoons as a natural supplement to augment immune capacity. After silk protein administration to BALB/c mice for 6 weeks, ratios of T lymphocytes (CD4(+) and…
We have examined antireflection (AR) coatings for high reflectivity metals such as Al on the basis of the admittance diagram. The proposed AR coatings consist of bilayers of absorptive and dielectric materials. A wide variety of materials can be used for AR coatings by tuning the thicknesses of both the absorptive and…
We study the liquid crystalline phases formed by di-, tri- and tetrafluoroterphenyls using molecular dynamics simulations at the all atom level. We demonstrate the spontaneous assembly of the nematic, smectic A and smectic C phases upon cooling from the isotropic phase for difluoroterphenyls. We find that the trifluor…
A mathematical model for a planar solid oxide fuel cell (SOFC) was constructed. The chemical species, the temperature distribution and the cell performance were calculated using unit model with double channels of co-flow pattern. The governing equations for mass continuity, momentum conservation, energy conservation a…
A polyoxotetradecamolybdate cluster [Mo(14)O(38)(OAc)(6)](2-), which has a lacunary core of the Wells-Dawson structure, is isolated by the reduction of [Mo(6)O(19)](2-). The Mo(14) core is comprised of a mixed valence of [Mo(V)(4)Mo(VI)(10)], exhibiting multi-step reversible redox processes that experience both oxidat…
Cluster-assembled nanostructured films of refractory metal oxides were produced by supersonic cluster beam deposition (SCBD) using a pulsed microplasma cluster source (PMCS). The growth of nanostructured films takes place at room temperature on substrates exposed to nanoparticles beam. Soft landing and limited diffusi…
Ionic-complementary peptides (ICPs) are well known for their strong propensity to form amyloid-like β-sheet fibrils. Here, we present the first example that α-helical based ICPs can self-assemble into a highly ordered fibrillar structure. Intriguingly, the individual α-helices in such fibrils are arranged shoulder-to-…
The objective of this study is to develop the process conditions of a w/o emulsification method for the preparation of the smallest agar nanoparticles possible in a low nanometer range with the highest yield, prior to adding an aqueous solution containing an unstable drug such as a protein drug for its encapsulation.…
Inversion of nanocrystalline ZnO(Ga) sensor signal during ammonia detection is reported for the first time. In the middle temperature region (250-300 °C) the presence of ammonia in air results in increase of resistance. Comparative EPR study and dc conductance measurements allows to attribute this effect to changes in…
Plant material screening was performed to study anti-Helicobacter pylori activity in vitro using an agar diffusion method on Columbia blood agar. 33 substances, juices and plant extracts and 35 of their combinations were tested. Quince (Cydonia oblonga) juice demonstrated the strongest anti-H. pylori activity followed…
A novel cadmium imidazolate framework of [Cd(nim)2] (CdIF-13, nim = 2-nitroimidazolate) has been prepared and structurally characterized that demonstrates a self-penetrating 4-connected net identified with the ice XII structure of itv topology and is presented as the first metal–organic framework (MOF) with itv topolo…