Materials Literature
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Silicene is a single atomic layer of silicon thin film structure, its structure is similar to the graphene, the hexagonal lattice structure with pleats. In recent years it has aroused widespread concern because of its unique physical properties. In this paper, use the tight-binding method (DFTB) of density functional…
Organic-inorganic hybrid perovskite materials offer the potential for realization of low-cost and flexible next-generation solar cells fabricated by low-temperature solution processing. Although efficiencies of perovskite solar cells have dramatically improved up to 22.1% within the past 6 years, there is still consid…
Bu çalışmada alaşımlama süresinin, tungsten (W)matrisli kompozitin mikroyapısal ve korozyon özelikleri üzerine olan etkisiincelenmiştir. Harmanlanan W-2wt.%VC-1wt.%C tozların mekanik alaşımlama işlemifarklı alaşımlama süreleri (1s, 3s, 6s, 12s and 24s) için, inert Argonatmosferinde yüksek enerjili öğütücü (SpexMill) k…
Quantum chemical calculations were carried out to study the molecular structure for indacaterol. To investigate the optimized molecular structure, bond length, bond angle and tetrahedral angels, Mullikan atomic charges, HOMO, LUMO energy levels, energy gap, dipole moment, total energy and some other physical parameter…
The effect of In addition on the magnetostructural transition behavior and magnetocaloric effect in the Mn-rich Heusler Mn-Ni-In melt spun ribbons have been studied in the present work. With the increasing of the In content, the crystal structure of the alloys are tetragonal NM martensite (for x=7~8.5), 7M monoclinic…
Effect of Na doping on the structural and magnetic properties of La1-xNaxCoO3 (0≤x≤0.4) nanopowder samples synthesized by sol-gel method have been investigated. Rietveld crystal structure refinement of the X-ray diffraction data shows that La1−xNaxCoO3 (x≤0.3) crystallizes in the rhombohedral structure with space grou…
Hydantoin epoxy resin, with a hydantoin group, is a kind of low viscosity nitrigen-containing epoxy resin. We prepared methyl hexahydrophalic anhydride (MeHHPY)/ hydantin epoxy resin, in which MeHHPA was used as cure agent. Non-isothermal differential scanning calorimetry was examined to follow the curing process. The…
发泡催化剂是聚氨酯泡沫材料生产过程中的关键技术之一。针对发泡催化剂的分子结构设计及其生产工艺，国内外的研究不断深入。本文根据聚氨酯泡沫材料的发泡原理及其对催化剂性能要求，系统地总结了有机胺类发泡催化剂在聚氨酯工业中的应用，并着重推荐了在发泡、环保性能等方面具有潜力的新型聚氨酯发泡催化剂品种。 Foaming catalyst is one of the key technologies in the production of polyurethane foam. In view of the molecular structure design and production process of the foam catalys…
The global lighting market is projected to exceed 100 billion dollars by 2020, undergoing rapid transitions driven by technological advancements. In conjunction with increased demand for new technology, global regulations have become increasingly stringent, mandating the development and implementation of more fuel-eff…
No abstract is available for this article.
The search for new materials possessing high optical nonlinearity is an important task because of their practical applications in harmonic generation, switching and other optical signal processing devices. Some complexes of amino acids with inorganic salts are reported to be promising materials for optical second harm…
Metal-organic frameworks (MOFs) are a promising platform for the synthesis of porous nanoparticles for diverse medical applications. Stefan Wuttke, Silke Meiners, and co-workers comprehensively investigate the nanosafety and hence the general applicability of different MOF nanoparticles for distinct fields of medical…
Harvinaiset maametallit ovat 17 alkuaineen joukko, johon kuuluu skandium, yttrium ja \nkaikki lantanoidit. Harvinaisten maametallien useat käyttökohteet korkean teknologian \nsovelluksissa tekevät niistä mielenkiintoisen tutkimuskohteen. Mielenkiintoa varsinkin \nharvinaisten maametallien kierrätykseen lisää myös Kiin…
In the paper, the SiC/NiCS coating on carbon/carbon composites was designed and prepared, and its oxidation properties was investigated. The SiC transition layer is prepared by embedding method while the NiCS coating by brushing slurry. Oxidation resistance of various coatings and the same coating sintered by differen…
This thesis gives a detailed design structure of a new metal additive manufacturing machine which has new processes that are in line with the latest advancement the metal additive manufacturing industry has made. The report has complete details to build the first prototype excluding electrical unit and software functi…
较早期核电厂的压力容器封头上的贯穿接管材料多为600合金，由于600合金对一回路水环境应力腐蚀开裂的抗性较差，易产生应力腐蚀裂纹贯穿压力边界而导致泄漏，可采用修复方法使用690合金接管更换损坏的接管，重构压力边界。为确保新压力边界能够达到原始设计要求，对重构压力边界的新接管及其焊缝进行结构完整性分析。对稳压器顶盖上的贯穿接管，进行重构压力边界的焊接修复和结构完整性评估，基于有限元分析获得工况瞬态热应力和焊接残余应力的基础上，依据ASME规范进行应力强度校核，并通过断裂力学计算分析假想裂纹在核电厂40年设计寿命内的扩展及稳定性，分析结果表明修复后的结构满足设计和使用要求。 Many NPP pressure vessel head…
Gold nanoparticles (Au NPs) have been widely studied because of their novel optical, electrochemical, catalytic, biocompatible and excellent shelf store properties which play important roles in applications. The ferromagnetism, which may widen the potential applications in spintronics, magnetic and magneto-electronic…
A computational thermo-mechanical insertion model was implemented considering the incorporation of carbon nanotubes (CNTs) into semisolid aluminium.A shell surface of CNTs within an aluminium matrix was obtained using the Particles Dynamic Method (PDM).Also, energy absorption simulations were performed through computa…
Data from experiments related to iGEM project 2016.
Les producteurs d’aluminium sont des acteurs majeurs dans l’économie du Québec. Le métal gris est apprécié pour sa légèreté et sa résistance à la corrosion. Bien qu’il possède des qualités indéniables, sa production consomme une quantité considérable d’électricité. L’amélioration de l’efficacité énergétique du procédé…