Materials Literature
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Purpose. The purpose of work is an estimation of influence of an electric spark treatment on the state of mouldable superficial coverage of carbon steel. Methodology. The steel of fragment of railway wheel rim served as material for research with chemical composition 0.65% С, 0.67% Mn, 0.3% Si, 0.027% P, 0.028% S. Str…
In this paper, we study the accuracy of Irving-Kirkwood type of formulas for the approximation of continuum quantities from atomistic simulations. Such formulas are derived by expressing the displacement, deformation gradient and stress in terms of certain kernel functions. We propose two criteria for choosing the ker…
The paper deals with studying the influence of motion parameters of the drying agent on the kinetics of mixed heat transfer drying for obtaining the requirements to functional features of turbulators, used in drying by this method.It was noted that one of the promising drying methods in terms of increasing the dehydra…
The effect of reactive diluents on the ac electrical treeing in epoxy/nanosilicate systems was studied, in a needle-plate electrode geometry. Diglycidyl ether of bisphenol A (DGEBA) type epoxy was used as a base resin, and layered silicate was used as a nano-sized filler. Polyglycol (PG) or 1,4-butanediol diglycidyl e…
An extraordinary light absorption property of nano-multiwall cylinder array with a periodic structure is reported. The ultra-high absorption is independent of the incoming light on polarization state and insensitive in a broad angle range. We attribute the efficient light harvesting property of nano-multiwall cylinder…
In the polymeric title compound, [Ag(C8H14N3)] n , the Ag(I) cation is coordinated by three N atoms from three 3,5-diisopropyl-1,2,4-triazolate anions in a T-shaped geometry. The Ag(I) cation deviates from the coordination plane by 0.014 (1) Å and the N-Ag-N bond angles are 96.85 (11), 97.72 (10) and 165.39 (12)°. The…
\n A detecção de descargas parciais em transformadores consiste em importante metodologia de manutenção preventiva e preditiva. Neste contexto, a proposta desta pesquisa com o uso de sensores acústicos de piezoeletreto apresenta-se como um tema original e altamente relevante no desenvolvimento da tecnologia brasileira…
Cu2ZnSnS4 nanocrystals have been fabricated using a hot injection method and the properties of the nanocrystals have been investigated as a function of the reaction temperature. When the reaction temperature was increased from 195 oC to 240 oC the grain size increased and the energy band gap of the nanocrystals was fo…
Jumlah kendaraan di Indonesia terus bertambah dari tahun ke tahun. Hal ini mengakibatkan oli bekas menjadi semakin banyak, yang berpotensi mencemari lingkungan. Oleh karena itu, diperlukan cara untuk mengubah oli bekas menjadi sesuatu yang lebih berguna. Salah satunya adalah membuat bahan bakar cair dari oli bekas. Di…
Large Aframax product tanker(more than 100k DWT),with centerline longitudinal corrugated bulkheads and transverse corrugated bulkheads in cargo area,is the largest type of product tanker at present.The external draft of Harmonized Common Structural Rules(CSR-H)for Bulk Carriers and Oil Tankers is released for external…
Be sigui el canvi de temperatura que experimenta un material a l’aplicar-li un camp magnetic en condicions adiabatiques, o be sigui el canvi d’entropia del material com a consequencia de la modi?cacio del camp magnetic en condicions isotermes, en tots dos casos obtenim una desposta termica que es coneix com a Efecte M…
以二氯乙二肟为原料，经取代反应、环化反应和复分解反应合成了1, 1′-二羟基-5, 5′-联四唑二羟胺盐(HATO)，总收率为81.7%。研究以未经干燥的二叠氮基乙二肟为中间体，提高了操作的安全性，采用溶解度较大的锂盐为中间体，提高了复分解反应的收率。对HATO的热稳定性、机械感度、形貌和粒度分布进行了研究。结果表明，HATO的热分解峰温为249.14 ℃ (10 ℃·min-1)，放气量为0.3 mL·g-1(100 ℃，48 h)，撞击爆炸概率为16%(10 kg落锤)，特性落高为100 cm (5 kg落锤)，摩擦爆炸概率为24%(3.92 MPa，90 °)，粒度为334 μm。
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Das Ziel dieser Arbeit war es Matrixeffekte, die in der Spurenanalytik mit LC-ESI-MS auftreten, grundlegend zu charakterisieren, Rückschlüsse auf ihren Mechanismus zu ziehen und Vorschläge zum Umgang mit diesen Störeffekten für Multianalyt-Methoden abzuleiten. Dazu wurde eine neue Methode zur Quantifizierung von Matri…
This work has been dedicated to the development of a multistep system composed by rare earths doped nanoparticles (core), enclosed by a first undoped crystalline layer (core-shell), serving as protection of the optical properties of the core. Within a shell of mesoporous silica allowing the loading of the photosensiti…
To my parents, Joo and Alexnia, for the love and teaching they have given me, which is still such a big part of who I am today.
Conflicting demands of food over fuel and the mushrooming need for feed and fibre are serious challenges for humankind at a time when we also need to address climate change challenges. Global demands for land based commodities will surpass increases in supply. Such divergence may bring civil unrest, hunger and malnutr…
First-principles DFT levels of calculations have been carried out in order to study the structural stability and electronic properties of hydrogen passivated graphene (H-graphene) clusters. Two different shaped clusters, rectangular and circular, consisting of 6 to 160 carbon atoms and hydrogen termination at the zigz…
ADVERTISEMENT RETURN TO ISSUEPREVAddition/CorrectionNEXTORIGINAL ARTICLEThis notice is a correctionCorrection to Photogenerated Carriers Transfer in Dye–Graphene–SnO2 Composites for Highly Efficient Visible-Light PhotocatalysisShendong Zhuang, Xiaoyong Xu*, Bing Feng, Jingguo Hu*, Yaru Pang, Gang Zhou, Ling Tong, and…
Abstract Recent development of high κ dielectric oxides on (In)GaAsis reviewed in the fields of electronic structure and electric performance; this includes studies of (In)GaAssurfaces with various surface reconstructions, different orientations, and Indium contents, and of high κ/(In)GaAsinterfaces. The oxide deposit…