Materials Literature
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Abstract In this paper, the effects of temperature and atmosphere on the gasification reaction of ferro-coke were investigated in consideration of the actual blast furnace conditions. Besides, the microstructure of the cokes was observed by scanning electron microscope (SEM). It is found that the weight loss of ferro-…
We report on an experimental investigation of spatial frequency responses of anisotropic transmission refractive index gratings formed in holographic polymer dispersed liquid crystals (HPDLCs). We studied two different types of HPDLC materials employing two different monomer systems: one with acrylate monomer capable…
We have already reported that Fe-Ni films prepared in citric-acid-based plating baths show good soft magnetic properties. In this paper, we investigated the effect of the grain size of the Fe-Ni crystalline phase in the films on magnetic properties, and employed an annealing and a pulse plating method in order to vary…
Abstract Synthetic nickelian malachite nanopowders (Cu1–xNix)2(OH)2CO3 with x = 0, 0.02, 0.04, 0.06, 0.08, and 0.1 were prepared by constant‐pH coprecipitation. N2 sorption isotherms confirmed a steady increase of the BET surface area with increasing Ni content for the as‐synthesized and calcined mesoporous materials.…
The purpose of this study is to characterize the V pre‐notched specimens with different relative depth ratio and the relative distance ratio by the AE signals in in situ three‐point bending tests. Simultaneously, during the bending process, the V pre‐notched specimen is in situ monitored by the opto‐digital microscope…
Thin films of pure vanadium oxide (VO x ) and Ge doped vanadium oxide (VO x :Ge) have been deposited by reactive magnetron sputtering on Si (100) substrates. These films were characterized by means of in situ X‐ray photoelectron spectroscopy and ultraviolet photoelectron spectroscopy to address the doping induced chan…
The unsymmetrical nature of a new tridentate ligand bis(quinolinyl)-1,3-pyrazole (DQPz) is exploited in a bistridentate Ru(II) complex [Ru(DQPz)2](2+) to elucidate an unexpected dynamic diastereomerism. Structural characterization based on a combination of nuclear magnetic resonance spectroscopy and density functional…
Interactions between a protein and a ligand are often accompanied by a redistribution of the population of thermally accessible conformations. This dynamic response of the protein's functional energy landscape enables a protein to modulate binding affinities and control binding sensitivity to ligand concentration. In…
Multicomponent ligand interactions are involved in essentially all practical nanoparticle (NP) applications. Presented herein is the finding that multicomponent ligand binding to gold nanoparticles (AuNPs) can be highly dependent on the sequence of ligand mixing with AuNPs. Quantitative study revealed that the competi…
Results on the control of the domain wall displacement in cylindrical Fe77.5Si7.5B15 amorphous glass-coated submicron wires prepared by rapid quenching from the melt are reported. The control methods have relied on conical notches with various depths, up to a few tens of nm, made in the glass coating and in the metall…
The article presents the research results of the infl uence of non -metallic inclusions on high-temperature plasticity of E76F rail steel. The maximum plasticity of all three zones of the continuously cast ingot, the criterion of which is the degree of shear strain, was established. The results of high-temperature twi…
This paper constitutes areview of the literature concerning with the methods of melt flow instabilities suppression and evaluation. Paper focus on melt flow instabilities suppression methods in accordance to their origins. Moreover, detailed description of so far used evaluation methods that allow to assess melt flow…
Abstract The Al-4.5 wt.% Cu powder was compacted by spark plasma sintering at three compaction pressures namely 30, 40, and 50 MPa maintaining temperature constant at 500°C. Porosity seems to be closed in all the 3 cases. Relative density of S-50 is decreased due to increase in electrical erosion holes. Transmission e…
RESUMEN. Se evaluó el crecimiento y supervivencia de ejemplares de la ostra perla Pinctada imbricata (semillas de 16-24 mm de longitud antero-posterior de la concha) pertenecientes a tres cohortes (CI, CII y CIII) durante tres períodos ambientales diferentes, en cultivo suspendido en el Golfo de Cariaco, Venezuela. Lo…
The present investigation is aimed at the solidification of subcooled liquid gallium. The gallium, in its liquid state, is contained in a cylindrical shell of copper or polypropylene, and poured into the shell, which is immersed in a cold bath. The experimental degree of subcooling varied between 5°C and 45°C. The phe…
A novel SalenCoIII (2,4-dinitrophenoxy) (Salen = N,N'-bis(3,5-di-tert-butylsalicylidene)-1,2-cyclohexanediamino) and 1,10-phenanthroline monohydrate catalyst system was designed and employed for the copolymerization of CO2 and propylene oxide (PO). The perfectly alternating copolymerization of CO2 and PO proceeds effe…
Abstract We report an advanced synthesis strategy, termed “exchange method using acid‐solvent synergy for metal–organic framework synthesis” (EASY‐MOFs), which can generally be applied to pillar‐layered MOFs to generate new structures. Superior to de novo synthesis, EASY‐MOFs provides an alternative synthesis route wi…
During transients involving multiconductor lines, the importance of the ground finite conductivity is well known and various techniques and expressions have been presented in literature for the inclusion of its contribution into the per unit length parameters. The direct time domain approach based on the introduction…
A multifaceted approach is used to identify the Fe centers associated with $\mathrm{KNb}{\mathrm{O}}_{3}:\mathrm{Fe}$, determine the location of energy levels, and conclude which centers play a vital role in the photorefractive effect; with such an understanding, the physical parameters may be modified to provide matu…
We derive analytic expressions for the built-in electrostatic potential arising from piezo- and pyroelectricity in a cylindrical axial In(x)Ga(1-x)N/GaN nanowire (NW) heterostructure. Our simulations show that, for sufficiently thin NWs, a significant reduction of the built-in potential is reached in comparison to the…