Materials Literature
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No presente estudo o empenamento de peças de polietileno linear de baixa densidade (PELBD) moldadas por rotomoldagem foi investigado. O efeito de diferentes fatores como espessura da peça, taxa de resfriamento e diâmetro de tubo de ventilação foi avaliado. Além dos experimentos de rotomoldagem, uma técnica alternativa…
isomers, DFT calculations, Cage volume changeHydrogen is a promising green energy source because ofits abundance in nature. Hydrogen storage materials (HSM)have thus received much attention from researchers. Themost remarkable theoretical reports of the HSM involvemetal atoms coated on carbon fullerenes and nanotubes.
Crystallization plays an important role in separation and purification of the antibiotics. And it is also an indispensable step in preparation of pharmaceuticals with biological activities and specific crystal form. As the last step in purification, crystallization determines the puri‐ ty, crystal habit, granularity a…
The green lasers are attractive and highly useful for lot of practical applications. It is more than fifty times brighter when compared to a red laser and thus it can be seen from miles away. Due to these features, the green lasers can be used in high-tech weapons for aiming purposes. More‐ over, the green lasers are…
The study on the diversity of benthic diatoms and water quality in the Mekong River as it passes through Ubon Ratchathani, Thailand was carried out from February 2007 to January 2008. Samples were collected from 10 stations, which were situated in areas involving different geographical features and human activities. T…
Transparent conducting aluminum-doped and undoped ZnO thin films have been deposited by direct current (DC) sputtering technique from ZnO target onto glass substrate at room temperature and 400 °C. X-ray diffraction analysis shows that all films have a preferential growth along the c-axis of the hexagonal structure. T…
Suprakolloidale Hybride: Polymerbasierte Janus-Micellen wurden entwickelt, die mehrwandige Kohlenstoff-Nanoröhren in verschiedenen Lösungsmitteln, einschließlich Wasser, stabilisieren. Entscheidend für die Stabilisierungseigenschaften ist das Größenverhältnis zwischen stabilisierendem und adsorbierendem Patch („Janus-…
(Bi,Pr)(Fe,Mn)O3 (BPFM) thin films were deposited on SiO2/Si substrates by a chemical solution deposition method, resulting in the metal–ferroelectric–insulator–semiconductor (MFIS) capacitor structure. Polycrystalline BPFM films were grown on the substrate without impurity phases. Comparing with the capacitance vs vo…
The embedded cluster method for ion–covalent crystal band structure calculations is proposed. This method uses the results of embedded cluster electronic structure calculations within one‐determinant Hartree–Fock approximations. The band structure of high‐temperature cubic phase ZrO2 crystal is calculated and found to…
Specific features of stratified flows are considered taking fast-neutron reactors as an example, the possibilities of scale-wise simulation of such flows are discussed, and some results obtained from experimental and numerical investigations of flows in mixing chambers and pipelines are presented. The mixing of sodium…
An improved power standard derived from a current comparator power bridge for calibrating active/reactive power and energy meters under sinusoidal conditions is described. Measurements can be made at any power factor from zero lag through unity to zero lead, at positive or negative power, at 120 V, 5 A, and 50 or 60 H…
In this research, Response Surface Methodology (RSM) was used to optimise the effect of three controllable input variables. To study the proposed second-order polynomial model for maximising Amorphous silica, a Central Composite Design (CCD) was used to estimation the model coefficients of the three input factors, whi…
In this work, a novel strategy is provided to prepare silver nanoplates by a fibronectin (Fn) nanofibril template. First, Fn molecules were controlled to assemble into amyloid-like nanofibrils in highly concentrated ethanol aqueous solution. The resultant nanofibrils could serve as a soft template to direct the format…
We report on a novel TaO x -based nonpolar resistive random access memory (RRAM) cell design with a Cr/TaO x /Al (top-to-bottom) structure. Extensive studies of the switching mechanism of the nonpolar RRAM were performed. The thermal coefficient of resistance of the RRAM in the low-resistance state is observed to adop…
IDRs often undergo transitions to more ordered states after binding to their targets and adopt a fixed three dimensional structures. Folding transition enables specificity without ex‐ cessive binding strength. Important characteristic of IDRs is multispecificity. One IDR is able to bind multiple targets (multispecific…
Spalten und übertragen: Ein Sensibilisator-Dieisen(III)-Komplex wurde in Gegenwart eines Elektronendonors erst belichtet und dann O2 ausgesetzt. Der Komplex wandelt sich dabei in eine aktive Dieisen(III)-Peroxo-Spezies um, die ein Sauerstoffatom auf ein Substrat übertragen kann (siehe Schema).
An improved method for the preparation of monomethine cyanine dyes with quinoline nucleus by one-pot three-component using 1-methyl-2-quinolinethione, quaternized 2- or 4-methylheterocyclic compounds and methyl p-toluenesulfonate as starting materials was described. Compared with the traditional methods, the new synth…
Magnetic properties of iron oxide nanoparticles synthesized by microwave solvothermal method are reported. The effect of the nucleating agent on the composition, size, morphology and microstructure of nanoparticles was studied with a view to their correlation with magnetic properties. It is shown that a soft magnetic…
We propose a novel approach to fabricate metal oxide nanostructures with locally modified thicknesses. Utilizing a nanoscale shadowing effect induced by a three-dimensional nanotemplate patterned on a substrate, we demonstrate that pulsed-laser deposition in an in-plane oblique configuration enables us to locally grow…
In order to construct a controlled release system of drugs and to reduce toxic side effects of 5-fluorouracil, the novel ramose chitosan-based-5-fluorouracil microspheres (CS-FU-MS) were prepared. Firstly, using chitosan (CS) as carriers and 5-fluorouracil (5-FU) as a model drug, ramose chitosan-based-5-fluorouracil (…