Materials Literature
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Cellulose from energy crops or agriculture residues can be utilized as a sustainable energy resource to produce biofuels such as ethanol. The process of converting cellulose into solvents and biofuels requires the saccharification of cellulose into soluble, fermentable sugars. However, challenges to cellulosic biofuel…
A unique feature of the 5d-iridates is that the spin-orbit interaction (SOI) and Coulomb interactions U are of comparable strength and therefore compete vigorously. The relative strength of these interactions stabilizes new exotic ground states that provide a fertile ground for studying new physics. SOI is proportiona…
An organophosphorus-based diamine has been synthesized and used as a curing and flame retarding bifunctional agent for epoxy resins.This phosphorodiamidate functions not only as a crosslinking materials in the Epon 828 epoxy resin curing process but also as a fire retarding compound to produce thin films or composites…
Im Rahmen der Arbeit wurde die Quecksilberaufzehrung in Leuchtstofflampen mit unterschiedlichen Metalloxidschutzschichten untersucht. Die Menge des gebundenen Quecksilbers wurde mittels Kaltdampf-Atomabsorptions-Spektrometrie (CVAAS) und Rutherford-Ruckstreuspektrometrie (RBS) ermittelt. Dabei ermoglicht RBS die Unter…
A design method about how to design main circuits of active power filters(APF) with hybrid cascade multilevel structure is proposed in this paper. Through careful research, the combination of these cascade H-bridge modules is properly chosen and the number of high-frequency modules is reasonably selected. Following ei…
An analysis of JOYO MK-II natural circulation test has been performed to evaluate the applicability of the fast reactor plant dynamics code super-COPD to natural circulation decay heat removal phenomena. The analysis domain is set from the reactor core to the intermediate heat exchanger (IHX) so as to focus on the sim…
In an effort to lower future CO2 emissions, a wide range of technologies are being developed to scrub CO2 from the flue gases of fossil fuel-based electric power and industrial plants. This thesis models two leading post-combustion CO2 capture technologies, a chilled ammonia-based CO2 capture process and an advanced a…
Convergence properties of Legendre expansion of a Doppler-broadened double-differential elastic neutron scattering cross section of {sup 238}U near the 6.67 eV resonance at temperature 10{sup 3} K are studied. A variance of Legendre expansion from a reference Monte Carlo computation is used as a measure of convergence…
The KIVA-Waseda code which is based on the KIVA-3V and added the KH-RT spray model, the PaSR combustion model and other sub-models can predict pressure and ROHR histories of new generation diesel engines with a high pressure common rail injection system for passenger cars. Exhaust emissions, NO and soot, however still…
采用基于密度泛函理论的第一原理方法,计算了LiBH4-X(X＝O,F和Cl)体系的晶体与电子结构及解氢性能.生成热和H原子解离能的计算结果表明:O原子掺杂优先占据LiBH4间隙位,F置换氢原子位,而Cl则取代BH4单元;O,F和Cl掺杂的LiBH4体系结构稳定性发生变化,其中O提高体系解氢效果明显,而F和Cl掺杂受H原子区域环境的影响.态密度、Mulliken电子占据数和电子密度的分析结果表明:B—H之间较强的共价键是LiBH4结构稳定、解氢困难的电子结构根源,O,F和Cl对LiBH4解氢能力影响主要是掺杂改变了H的s态与B的sp态的杂化特性、以及BH4单元与Li的成键作用．
Due to the low volatility and high reactivity of conventional diesel fuels, the efficient combustion of a highly homogenous cylinder charge is normally limited to low loads. When the compression ratio, and thus the expansion ratio for prevalent engine designs, is substantially lowered to accommodate higher loads, the…
Resumen.Los aceros con estructura de grano ultrafino pueden presentar comportamiento superplastico a temperaturas y velocidades de deformacion especificas, que faciliten la activacion de los mecanismos de deslizamiento de fronteras de grano. El comportamiento superplastico implica deformaciones elevadas por procesos d…
Aiming at deep desulfurization of gasoline, three amphiphilic catalysts (C18H37N(CH3)3)3+x (PMo12-xVxO40) (x=1,2, or 3) were prepared and characterized. The amphiphilic vanadium (V)-substituted polyoxometalates were dissolved in wa- ter-immiscible ionic liquid ((Bmim)PF6), forming a H2O2-in-(Bmim)PF6 emulsion desulfur…
This paper introduces a novel methodology for the fabrication of threedimensional (3D) strain sensing elements for micro-and nanoelectromechanical applications based on the tunneling effect in nanogranular metals.The nanogranular tunneling resistors (NTR) are prepared by the direct writing technique of focused electro…
In order to meet challenging efficiency and emission target, modern engine design is more likely to involve mixed-mode of combustion as well as multiple fuels. In order to accurately predict the process of such combustion in CFD, detailed chemistry based modelling approach is required. This paper introduces the concep…
Top layers of railway rails are subjected to microstructural changes sometimes resulting in white etching layers. These thin layers are more brittle than the base material and show increased cracking and spalling. For the present study pearlitic rail samples from curves without corrugation from the Stockholm local tra…
The paper discusses the difference in the formulation concepts of alumina-spinel (spinel containing) and alumina-magnesia (spinel forming) castables and the influence on their physical properties. The individual property profile is discussed with respect to the requirements of refractory lining materials for the diffe…
This paper discusses repeating patterns on infinite skew polyhedra, which are triply periodic polyhedra. We exhibit patterns on each of the three regular skew polyhedra. These patterns are each related to corresponding repeating patterns in the hyperbolic plane. This correspondence will be explained in the paper. 1.
The aim of this research is to explore a high efficient and low emission engine without persisting in using only a fuel. The authors are currently interested in a natural gas/diesel dual fuel engine with advanced diesel fuel injection control technology which has been developed and adopted for recent diesel vehicles.…
Abstract : When characterizing ballistic performance of armor materials, V50 is a standard performance metric to consider. The V50 is the velocity at which a given projectile is expected to completely penetrate the material 50% of the time. The definition of a fair hit per MIL-STD-662F regarding shot placement states…