Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
This contribution quantifies the accumulated arcing stress inside high-voltage circuit breakers during a 25 year period of operation. Ageing mechanisms due to this arcing stress are discussed briefly.\nThe aim is to design a suitable test program to verify endurance against this accumulated arcing stress: electrical e…
Seit der Durchführung der ersten Beugungsexperimente zeigte sich, dass das Aussehen der einzelnen Beugungsinterferenzen, also die Intensitätsverteilung der lokalen Beugungspeaks in Form, Profil und Intensität unterschiedlich sind. Man spricht vom Linienprofil der Beugungsinterferenz. Sehr früh erkannte man, dass das L…
En jamforelse av olika reningsmetoder for avskiljning av lakemedelsrester : Resultat fran Stockholm Vattens projekt
End of Life Vehicles (ELVs) dismantling in Italy currently allows the recovery of about 75% of a ELV total weight, consisting of metallic materials, and leaves behind an heterogeneous material defined Automobile Shredder Residue (ASR). Actually ASR is almost completely landfilled, but European regulations state that 8…
A photonic crystal slab, consisting of an array of circular sub-micron diameter holes in Silicon on Insulator (SOI), has been fabricated using focused ion beam (FIB) milling. This application requires the sidewalls of the holes to be very smooth and as nearly perpendicular to the slab as possible. The shape of holes i…
A utilização dos perfis formados a frio vem aumentando de forma expressiva tanto na construção civil quanto na indústria mecânica. Com esse crescimento surge também uma necessidade de métodos de cálculo que auxiliem a avaliar corretamente seu desempenho estrutural. Nesse sentido, o presente trabalho propõe-se a fazer…
The study is carried out to evaluate the energy (electricity and gas) usage for cotton ginning processes in Australia. The pattern of energy usage is identified and its relationship with incoming cotton is analysed. Based on the electricity usage and bales produced, a benchmark of electricity use for cotton ginning is…
Low density polyethylene(LDPE)/lignin blends were prepared using melt blending.Two kinds of compatibilizers, ethylene-vinylacetate(EVA) which is softer than LDPE and polyethylene grafted with maleic anhydride(PE-g-MA) which is harder than LDPE were used to improve the interfacial adhesion.Scanning electron microscope(…
Atomistic Molecular Dynamics and Molecular Statics simulations are nowadays capable of accessing highly sophisticated high performance computer architectures. Therefore it is becoming natural to push these methods towards realistic experimental sizes in order to design simulations with predictive power. In order to si…
Polyimide foams produced from poly(amic acid) precursors are currently used in aerospace and military applications for their high thermal stability, inflammability, and desirable mechanical properties. They are used despite fundamental knowledge of the phenomena governing their growth. A numerical model was previously…
El contenido de materia organica (MO) del suelo se relaciona positivamente, en algunos casos, con la superficie especifica (SE) del mismo, pero grandes cantidades de MO pueden resultar en una SE menor, cuando se la determina a traves de la adsorcion de nitrogeno a bajas temperaturas. Tradicionalmente se asocia a la MO…
The hybrid SiC foam-SiC particles/Al double interpenetrating composites to be used as the brake materials of high speed train were fabricated by squeeze casting technique. The influence of the type of matrix on the mechanical properties and the fracture mechanism of the hybrid composites was investigated. The interfac…
包含铝的 MCM-41 催化剂的二个系列作为 oxidant.The 用 t-butylhydroperoxide ( TBHP )为 dibenzothiophene ( DBT )的氧化 desulfurization 作好准备电子性质，毛孔尺寸和催化剂的吸水的性质被 XRD 学习，赌注，并且红外 spectrometry.The Mo-Al2O3 催化剂和TiMCM-3%也为 comparison.The 被学习有在框架的 MoO3 的 MCM-41 沸石的二个系列或在低 MoO3 conten 在展出的表面上使可观的活动妊娠了
磁化配置被 micromagnetic 为 nanocrystalline Pr-Fe-B 永久磁铁在各种各样的磁场下面计算有限元素方法。根据配置在除去磁性过程期间，磁化颠倒的机制被分析。为有 10 nm 谷物的 Pr2Fe14B 或它的与 10vol .% a-Fe 合成， coercivity 被发生在谷物边界的颠倒的领域的成核决定。为有 30 nm 谷物的 Pr2Fe14B，然而， coercivity 被起核心作用的领域卡住控制。为有 30vol .% a-Fe 的 Pr2Fe14B/a-Fe，除去磁性行为被 a-Fe 时刻的连续颠倒描绘。
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Giovanni Pollarolo; The many facets of Grazing Reactions: Quasielastic Barrier Distributions. AIP…
随着我国环保要求的不断严格，汽车尾气的排放将受到越来越严格的控制。为配合我国第Ⅲ段排放法规的顺利实施，国家标准化管理委员会批准发布了新版车用柴油，即GB17951—2009《车用柴油》国家标准。
Methods aimed at increase of stability of electrets state via injection of nano-sized particles have been studied. It is shown that the injection of different forms of silicon dioxide in LDPE films results in a significant increase of stability of electrets state. The results of thermally stimulated relaxation of surf…
利用溶胶凝胶法制备CuO/γ-Al2O3催化剂颗粒,在固定床上测试催化脱硝活性.CuO/γ-Al2O3在250～400℃范围内脱硝效率达到90%以上.硫化作用后催化剂的最佳温度窗口向高温方向移动.利用程序升温方法研究了CuO/γ-Al2O3对NH3的氧化性能,经硫化后催化剂对NH3的氧化性能下降,降低了催化剂在低温区脱硝活性.NH3和NO的脱附实验显示NH3和NO在催化剂表面存在明显的吸附现象.经硫化经后催化剂增加了对NH3的吸附量,降低了对NO的吸附量.暂态实验证明NH3以吸附态参与反应,而NO以气态或者弱吸附态参与反应.NO的吸附在实际SCR反应过程中影响有限.动力学计算显示溶胶凝胶法制备CuO/γ-Al2O3拥有较低的选择性…
The spin casting technology basically need a vulcanized mold to be placed into spin casting machine and also the silicone rubber as the material of the mold. The spin casting machine has been constructed in UAJY in 2007, but it did not use the cured silicon rubber already. It was applied to RTV silicone rubber. The ex…
形成眼镜的能力(GFA ) 是在学习金属性的眼镜的一个重要因素。到目前为止，为评估形成眼镜的能力有几个标准。为为体积预言作文然而，他们差不多显示出的金属性的眼镜为不同盒子的精确性和通用性。在这个工作，为形成眼镜的能力的标准的四种类型被分类并且考察：1 ) 有典型温度的指示物；2 ) 包含结构的因素的指示物；3 ) 指示物基于 Miedema 的模型；并且 4 ) 原告基于阶段图。单个指示物不能被用来由于它的有限理论框架正确地预言所有金属性的玻璃系统的 GFA，这被指出，并且多重指示物的联合显示出更多的效率和精确性。尽管为 GFA 开发通用指示物仍然是很困难的，最近的指示物似乎比以前建议的那些具有更可靠的物理意思。