Materials Literature
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Fe-6.67 wt. %C and Fe-1 wt. %C powders were milled in a dual drive planetary mill for 40 h. It has been found that there is a formation of Fe3C and other iron carbides after 40 h of milling. However, the formation of iron carbide is more in the case of Fe-6.67 wt. %C as compared to Fe-1 wt. %C. The reduction in partic…
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A simple method of alkaline extractio was used to extract silica from the rice husk. The silica as obtained was found to have high surface area and wide pore size distribution. An alkaline extraction route using NaOH was followed to extract silica and later it was impregnated with transition metal, Copper and Chromium…
[10210-68-1] C8Co2O8 (MW 341.94) InChI = 1S/8CO.2Co/c8*1-2;; InChIKey = NFWSABSVGZVHCA-UHFFFAOYSA-N (catalyst for carbonylation and related reactions; major source of other synthetically useful organocobalt compounds) Alternate Names: di-μ-carbonylhexacarbonyldicobalt; cobalt carbonyl. Physical Data: mp 51–52 °C (dec)…
Industrial waste like fly-ash which is creating environmental problems, is mainly used as a building material due to its low cost and easy availability. But the main disadvantage of these bricks is its low strength. So, a lot of research is going on to increase the strength of these bricks. The present research work i…
chemical and radioactive contaminants were less than their respective WAC targets or limits unless noted in this section; (2) The reported detection limit for {sup 59}Ni is above both the requested limits from Reference 2 and the established limits in Reference 3; (3) The reported detection limit for {sup 94}Nb is abo…
In this paper we describe some basic issues in the numerical modeling of graphene devices at optical frequencies. In the first part of the paper we analytically describe the behavior of a graphene-based directional coupler; in the second part of the paper we introduce a novel formulation of the Beam Propagation Method…
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The long-standing problem of impurity states in narrow-gap PbTe crystals doped with group-III element Ga was analized by means of density functional theory. We focus on the mechanisms of the self-compensation during growth as well as during post-growth annealing to clarify the mechanism of dielectric state formation n…
The compounds R 2 PdSi 3 , with R = rare earth, exhibit a very interesting magnetic behavior with two phase transitions. Substituting one in four Si atoms by Pd in HoSi 2 results in a modulation of the aristotype. There are several different variants discussed in literature about the nature of the modulation of this r…
The important parameters by which the energy storage technologies can be characterised are: (a) Extent, which is the amount of energy that the said device can store. This can be specied as gravimetric energy density (Wh/ kg) and this emphasises the weight of the device. Alternatively, volumetric energy density (Wh/L)…
Allocated one of several developments to enhance the technical, economic and environmentalperformance of modern locomotive power plants. The expediency of the use of gas distribution shafts with new more efficient gas distribution cams. The results of mathematical modeling and analysis of thekinematics characteristics…
Developments in computer-aided engineering and the rapid growth of computational power have made simulation-driven process and product development efficient and useful since it enables detailed evaluation of product designs and their manufacturing processes. In the context of a sheet metal component, it is vital to pr…
A probabilistic approach to lifetime robustness of deteriorating bridges is presented. The role of the environmental damage on structural robustness is investigated by comparing the performance indicators in the original state, in which the structure is intact, and in a perturbed state, in which a damage scenario is a…
Using the self-consistent density functional method, we investigate the structural and electronic properties of cubic Hf3N4 with Th3P4 structure at ambient and high pressures. The lattice parameters, cell volume, bulk modulus, and pressure derivative at ambient pressure are obtained, which are in excellent agreement w…
Kerataan dan kekasaran merupakan hal yang mutlak untuk komponen atau alat dalam hal pemesinan khususnya mesin bubut. Mesin bubut konvensional merupakan mesin yang banyak digunakan untuk proses pemesinan. Kerataan dan kekasaran suatu benda kerja yang dikerjakan oleh mesin bubut dipengaruhi oleh parameter – parameter ya…
The tensile behavior of single crystalline GaN nanotube bundles was studied using classical molecular dynamics. Stillinger–Weber potential was used to describe the atom–atom interactions. The GaN bundles consisted of several individual GaN nanotubes with {100} side planes. The simulation results show that the nanotube…
Etched multiwalled carbon nanotube (EMCNT) was prepared via an in situ reaction between Si and MCNT induced by the reaction between Na and I2. Subsequently, EMCNTs was subjected to a copolymerization reaction with 4,6-diaminoresorcinol salt (DAR2HCl) and terephthalic acid (TA) in polyphosphoric acid (PPA) by Friedel–C…
A variety of technological applications related to oxide semiconductor-based devices have attracted great interest among the scientific community, leading to an increase in studies of these materials during the last years. Among such materials, zinc oxide (ZnO) has applications in several areas, from light-emitting di…
The Inside Cover picture shows an amine-tethered porous polymer network and its application for carbon capture from flue gas. This polymer based on diethylenetriamine, PPN-125-DETA, exhibits a working capacity comparable to industrial benchmark monoethanolamine (MEA) solutions. More importantly, the energy cost for th…