The real part of the permittivity (ε) and tan δ sintered alumina (Al 2 O 3 ) at about 9 GHz have been measured. dielectric properties examined as a function purity, pore volume, grain size. is found to depend very strongly on ε far less sensitive impurities dependence porosity can be described by simple mixture models expected. A model losses in single crystals cannot extended easily these materials where extrinsic factors such porosity, random crystal orientation, boundaries, microcracks,...

Ultrafine Pd nanoparticles monodispersed on graphene oxide (GO) surfaces were successfully prepared by the redox reaction between PdCl42− and GO. The as-made catalyst is very “clean” as a result of surfactant-free formation process, allowing it to express high electrocatalytic ability in formic acid ethanol oxidation relative commercial Pd/C catalyst. This simple straightforward method significance for facile preparation metal nanocatalysts with catalytic activity proper supporting materials.

The simultaneous entrapment of biological macromolecules and nanostructured silica-coated magnetite in sol-gel materials using a reverse-micelle technique leads to bioactive, mechanically stable, nanometer-sized, magnetically separable particles. These spherical particles have typical diameter 53 +/- 4 nm, large surface area 330 m(2)/g, an average pore 1.5 total volume 1.427 cm(3)/g saturated magnetization (M(S)) 3.2 emu/g. Peroxidase entrapped these shows Michaelis-Mentan kinetics high...

This paper reports on the development and subsequent use of electric power communication synchronizing simulator (EPOCHS), a distributed simulation environment. Existing tools accurately model systems past, which were controlled as large regional pools without significant elements. However, increasingly turn to protection control that make computer networks, these simulators are less capable predicting likely behavior resulting grids. Similarly, used evaluate new protocols have been...

The dielectric loss (tan δ) of titanium dioxide (TiO 2 ) disks has been measured at a frequency 3 GHz. High‐purity TiO sintered to almost‐full density exhibits very high tan δ, which is interpreted be due oxygen deficiency. To counter this, doping with stable divalent and trivalent cations, such as Mg Al, leads low probably by preventing Ti 4+ reduction. δ polycrystalline doped ions ionic radii in the range 0.5–0.95 Å GHz can low: 6 × 10 −5 ( Q ∼ 17 000) temperature 300 K. undoped pure...

In this paper, we present a technique for the preparation of polymer nanowires with protein molecule imprinted and binding sites at surface. These surface imprinting exhibit highly selective recognition variety template proteins, including albumin, hemoglobin, cytochrome c. This may be through multistep adsorption, specificity conferred by hydrogen bonding shape selectivity. Due to are located at, or close to, surface; these have good site accessibility toward target molecules. Furthermore,...

The sequence divergence of chloroplast rbcL, matK, trnV intron, and rpl20-rps18 spacer regions was analyzed among 32 Pinus species representatives six other genera in Pinaceae. total aligned length is 3570 bp. Of the four sequences examined, matK evolved much faster than rbcL Pinaceae genera. two noncoding did not show more coding regions, especially within each subgenus. Phylogenetic analyses based on these gave consistent results strongly supported monophyly hypothesis for genus its...

Herein we present a novel method for preparation of surface molecularly imprinted size-monodisperse nanowires. The imprint molecule is immobilized on the pore walls silane-treated nanoporous alumina membrane. nanopores are then filled with monomer mixture, and polymerization initiated. membrane subsequently removed by chemical dissolution, leaving behind polypyrrole nanowires glutamic acid binding sites situated at surface. These can be dissolved in aqueous media, their applications...

This study takes a process-oriented approach to understand the current status of political discussion research and identifies engagement—discussion attention integrative discussion—as an unexplored but important facet discussion. As block, these two variables engagement independently accounted for significant variance in criterion engagement, knowledge participation, after controlling not only host demographic, attitudinal, media use also three most researched structural features...

Five different flavonoids were isolated from licorice after multistep chromatographic fractionation. The aim was to identify and characterize active components in responsible for antibrowning activities seek new tyrosinase inhibitors applications as depigmenting agents the food cosmetic industries. identified liquiritin, licuraside, isoliquiritin, liquiritigenin (from Glycyrrhiza uralensis Fisch.), licochalcone A inflate Bat.) by UV, MS, 1H NMR, 13C NMR analyses. inhibitory potencies...

In this report, we describe the synthesis of a molecularly imprinted polymer (MIP) nanotube membrane, using porous anodic alumina oxide (AAO) membrane by surface-initiated atom transfer radical polymerization (ATRP). The use MIP in chemical separations gives advantage high affinity and selectivity. Furthermore, because molecular imprinting technique can be applied to different kinds target molecules, ranging from small organic molecules peptides proteins, such membranes will considerably...

The change in snow cover under climate is poorly understood Tianshan Mountains. Here, we investigate the spatiotemporal characteristics and trends of snow-covered area (SCA) days (SCD) Mountains by using cloud-removed MODIS fractional datasets from 2001–2015. possible linkage between temperature precipitation changes over also investigated. results are as follows: (1) distribution exhibits a large heterogeneity. areas with SCD greater than 120 distributed principal mountains elevations above...

Abstract The oxidation of iodide ions during annealing in air and rich defects generated at crystal terminations perovskite are major limitations for achieving high photovoltaic performance printable mesoscopic solar cells (p‐MPSCs). Here, the dual role hydrazide derivatives inhibiting passivating termination is reported how affected by substituent studied. It's found that varying derivative from formylhydrazine (FH) to benzhydrazide (BH) then 4‐tert‐butylbenzhydrazide (TBBH) introducing...

Wound healing includes four consecutive and overlapping stages of hemostasis, inflammation, proliferation, remodeling. Factors such as aging, infection, chronic diseases can lead to wounds delayed healing. Low-temperature cold plasma (LTCP) is an emerging physical therapy for wound healing, characterized by its safety, environmental friendliness, ease operation. This study utilized a self-developed LTCP device investigate biological effects mechanisms on in adult elderly mice....

In this study, we report a simple procedure for applying molecular imprinting functional groups to the inner surfaces of template-synthesized sol-gel nanotubes chemical separation estrone. The silica were synthesized within pores nanopore alumina template membranes using method by simultaneous hydrolysis monomer-imprinted molecule complex and tetraethoxysilane (TEOS). A covalent strategy was employed generating sacrificial spacer through reaction isocyanate group 3-(triethoxysilyl)propyl...

Gene duplication is the primary source of new genes and novel functions. Over course evolution, many duplicate lose their function are eventually removed by deletion. However, some duplicates have persisted evolved diverse A particular challenge to understand how this diversity arises whether positive selection plays a role. In study, we reconstructed evolutionary history class III peroxidase (PRX) from Populus trichocarpa genome. PRXs plant-specific enzymes that play important roles in cell...

This paper reports a nontoxic, rapid, one-pot and template-free synthesis of three-dimensional (3D) Pt nanoflowers (PtNFs) with high yield good size monodispersity supported on graphene oxide (GO) nanosheets. The key strategy employed low-cost, green solvent, ethanol as the reductant an advanced, powerful 2D carbon material, GO nanosheets stabilizing material. resulting PtNFs-GO were characterized by transmission electron microscopy (TEM), high-resolution TEM, energy-dispersive X-ray...

Context: Depression is one of the most common psychiatric diseases. Acorus tatarinowii Schott (Araceae) has shown many bioactivities in treatment senile dementia and epilepsy. However, there no report on antidepressant-like effects essential oil (EO) its major components animals under standardized experimental procedures.Objective: This study was designed to investigate antidepressant properties EO asarones from rhizomes A. tatarinowii.Materials methods: Gas chromatography–mass spectrometry...