Materials Literature
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Pulping properties of the imported mixed eucalyptus chips and the domestic yellow poplar chips were investigated for comparing two chips as the raw materials for the hardwood chemical pulp. Soda-AQ (anthraquinone) pulping was applied for this study. The pulp from yellow poplar showed higher pulp yield than pulp from m…
The wettability between porous MgAl2O4 substrates and molten iron was investigated by the sessile drop method at 1833 K as a basic study in order to elucidate the interactions between molten iron and a refractory material. For the study, MgAl2O4 substrates with 2, 8, 13, 27, and 39% porosity were prepared. The contact…
This paper describes the first phase of the California warm-mix asphalt study, in which a test track was constructed to compare performance, under accelerated pavement and associated laboratory performance testing, of a control mix, produced and constructed at conventional hot-mix asphalt temperatures, with three mixe…
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The concept of a fatigue limit at 106 cycles that was introduced by Wohler in 1850 seems nowadays to be the wrong magnitude when considering the fatigue life of modern industrial applications such as automotive engines that run typically billions of cycles. The necessity to increase performances in terms of lifetime a…
The year 2009 has seen many advances in supramolecular chemistry. This short review highlights a number that have been made by various research groups. In line with previous articles from this series, the review is split into three broad sections encompassing molecular recognition, structure and assembly, and function…
The Discrete-Continuous Model, a coupling between dislocation dynamics and finite elements simulations, is used for modelling size effects in the mechanical properties of single-crystal superalloys. Both formation and evolution of the dislocation microstructures are analysed, and the crucial role of the storage of sig…
This article reviews the literature reported during 2009 on conducting solids including both ionic and electronic conductors. The review focuses in particular on materials which have relevance in solid oxide fuel cell, lithium ion battery and superconductor applications.
2D Photonic crystals (PC) with defects can act as standing-wave resonators, which offer benefit of high mode selectivity for building novel RF sources. We introduce our work on designing two-cavity single-beam and multi-beam klystrons using triangular lattice metallic PCs. We present the cold test results of the stub-…
众多的研究被考察并且解释了向氧化描绘激活的碳和它的行为的一幅全面插图。最重要的吸附物之一被试试到它的鈥淭e xtural 特征鈥 ? 和鈥淪u rface 化学鈥的术语在这篇评论论文被描述的激活的碳？这二个术语，结合了对方，为在吸附进程并且在催化应用程序的激活的碳的行为负责。尽管同样准备的激活的碳通常是非选择的，他们的表面受不了足够反应的组的缺乏，他们的不同方面可以被修正的多样的类型改进并且发展。氧化是为激活的碳使用的最常规的修正之一。它可以被用作最后的修正或作为进一步的处理跟随的修正前。在这篇论文，当氧化的一个使用得广泛地的范畴更详细地被讨论，激活的碳和另外的 graphene 层碳材料的氧化的方法被介绍并且弄湿氧化。
包含呋喃组(PFB ) 的新奇基于 benzoxazine 的酉分的树脂经由简单二拍子的圆舞反应被综合， PFB 的结构被 FTIR 和 1H NMR 系列证实。微分扫描热量测定(DSC ) 证明从 PFB 治好的 polybenzoxazine 与基于 benzoxazine 的酉分的树脂的相比有好热抵抗和更低的聚合温度。
A simple chemical route for the synthesis of inorganic semiconductor nanoparticles has been reported. CdS and ZnS nanoparticles have been synthesized using respective metal precursors and DMF as a stabilizing agent. The samples have been analysed by XRD, UV-VIS, fluorescence spectroscopy and TEM. Crystalline nature an…
Silicon (Si) nanoparticles (NPs) were synthesized by transforming a Si wafer surface to ammonium silicon hexafluoride (ASH) or (NH4)(2)SiF6 under acid vapor treatment. Si-NPs which were found to be embedded within the polycrystalline (ASH) layer exhibit a strong green-orange photoluminescence (PL). Differential PL mea…
The electromagnetic analog of an elastic spring-mass network is constructed. These electromagnetic circuits offer the promise of manipulating electromagnetic fields in new ways, and linear electrical circuits correspond to a subclass of them. The electromagnetic circuits consist of thin triangular magnetic components…
The synthesis, structure, spectral and biological studies of Cu (II), Ni (II), Co (II) and Mn (II) complexes of unsymmetrical Schiff base hydrazones ligand are described. Ligands are synthesized starting from cinnamaldehyde hydrazone with substituted salicylaldehyde. It is evident from the IR data that in all the comp…
We fabricated three-dimensional arrays of optical Yagi-Uda nano-antennas. Due to the high directivity of the array structure the incoming light is received efficiently at the resonant wavelength in the near-infrared (around λ = 1.3 μm).
Because of the developpement of materials science, there is a need to reduce the computational complexity of mechanical models. This paper aims to show that the Hyper Reduction method enables to reduce computational resources used for numerical simulations. Large mechanical models involving distributed nonlinearities…
Pavement markings are used on roadways to provide guidance and information to drivers and pedestrians.They include longitudinal markings (centerlines, lane lines, and edge lines), transverse markings (stop lines, yield lines, and crosswalk markings), and special markings (arrows, words, symbol markings, red or blue ra…
The effect of chitosan’s molecular weights (Mw) on mangosteen dye fixation on cotton was studied using chitosans with Mw of 226 kDa (CTS-Mw I; native chitosan), 10.8 kDa (CTS-Mw II), and 7.2 kDa (CTS-Mw III). The preparation of chitosan with different Mws was carried out using sodium nitrite in acid media (depolymeriz…
Purpose: The main aims of this work is the presentation of the influence of yttrium addition on the structure and properties of BMG and the production attempt of chosen Fe-based bulk metallic alloys. Design/methodology/approach: The studies were carried out on Fe- based alloys ingots with the following compositions Fe…