Materials Literature
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The strength database from the parametric study presented in (Yao and Rasmussen 2014) was used to evaluate an overall number of 19 design methods based on the DSM for non-perforated and perforated thin-walled steel columns with the Ramberg-Osgood material model defined by n=20. These methods included the current codif…
An interesting problem in the economics of innovation and strategic management of labs is to explain the drivers of breakthroughs and paradigm shifts in science. This study confronts the issue by analysing a main case study the technological determinant of the discovery of quasi-periodic materials that has generated a…
난연제 가운데 가장 많이 사용되는 할로겐 함유 난연제는 사용상 환경적인 제한을 받고 있어서 비할로겐타입인인계에 기초한 난연제가 각광을 받고 있다. 난연제는 수지에 가해지는 경우에 흔히 열분해와 기계적 특성저하를 일으킨다. 물성의 열화를 최소화하고 충분한 난연성을 얻기 위한 시도로 새로운 난연제에 대한 연구를 수행하였다. 본 연구에있어서는 diaryl alkyl phosphate esters, aromatic phosphate esters 및 phosphonium nitron 난연제 등 세가지형태의 비할로겐 인계에 기초한 난연제를 합성하여 GC, IR 및 TGA 등으…
The Fourier cosine expansion approach (COS) is developed by Fang and Oosterlee (2008) using the Cosine series expansions of the value function at the next time level and the density function. The resulting equation is called the COS formula, due to the use of Fourier cosine series expansions. Fourier series expansions…
본 연구에서는 Mullite에 LAS계의 Eucryptite를 첨가하여 고온에서도 안정하며 우수한 특성을 나타내는 복합체를 제조하고자 하였다. 첨가상인 Eucryptite는 화학적 양론비에 따라 (Li2O:AI2O3:SiO2=1:1:2) mole비에 맞추어 1000℃에서 2시간 하소하여 단일상으로 합성하였다. Mullite는 상업적으로 판매하는 것을 사용하였고 Attrition mill을 이용하여 3.8um, 합성된 Eucryptite는 0.3um로 각각 분쇄하였다. 이 두 재료를 wt. %에 따라(M:E = 10:0, 9:1, 8:2, 7:3) 혼합하여 복합재료를…
将前驱体Ni0.15CO0.2Mn0．3（OH）2以及前驱体和碳酸锂的混合物分别进行热处理，初步探讨其在高温热处理过程中的结构变化以及热处理方式对材料电化学性能的影响。采用X射线衍射（XRD）、热重一差热分析（TG-DSC）、扫描电镜（SEM）以及恒流充放电测试技术对合成材料物理性能和电化学进行测试和表征。结果表明：前驱体在热处理过程中，其结构经历由Me（OH）2→NiCoOOH→Mn（Ni，Co）2O4的转变过程；而前驱体与碳酸锂的混合物则经历由两相混合物一三元材料＋Li2CO3→三元材料的结构转变过程；相比于单-高温平台热处理而言，采用低高温双平台热处理所合成的材料可有效降低阳离子混排，使其具有更好的电化学性能。电化学测试结果…
목적: 무색 인공수정체안과 광변색 인공수정체 안의 수술 전 후 박명시에서의 시력 및 스트레이라이트를 비교하여 실내에서 또는 야간에 광변색 인공수정체안의 시력의 질에 미치는 영향을 평가하고자 한다. 대상과 방법: 무색 인공수정체(Akreos AO MI60)를 삽입한 72명 95안(A군), 광변색 인공수정체(Matrix Aurium No.404)를 삽입한 16명22안(B군)을 대상으로 하였다. 두 군에 대하여 술 전, 술 후 1개월째의 최대교정시력, 술 전, 술 후 1개월 및 2개월째의 스트레이라이트를 비교하였다. 안구 내 스트레이라이트 측정은 C-quant (Ocul…
The research conducted safety margin test on some typical or experimental design parameter dimensional change of graphite moderated reactor design (GMRD) models in terms of the height and diameter with respect to high temperature effect on the stability of the reactor during operation and secondly, safety margin test…
This paper uses a complicated set of phase-ins and phase-outs of oxygenated motor fuel in the Northeast to determine whether E-10 ethanol-enhanced fuel contributes to acetaldehyde air pollution over the pre-ethanol methyl tertiary-buthyl ether (MTBE) fuel. Oil companies phased out MTBE because of groundwater pollution…
Background Currently, selection of nondestructive testing (NDT) methods for the survey of buildings and constructions is conducted by the experts only on the basis of their own experience, because in regulatory documents there are no list of mandatory methods. To avoid the subjectivity and possible errors in сreating…
The formation of highly ordered self-assembled monolayers (SAMs) is of remarkable interest in the development of functional patterned surfaces for electronic applications as Quantum-dot Cellular Automata (QCA). QCA exploit quantum confinement, tunnelling and electrostatic interaction for transistor-less digital comput…
Shoulder disorders due to overexertion include joint and soft tissues chronic conditions and are an important cause of disability. Shoulder pain is one of the most common musculoskeletal disorders and has been associated to manual handling of heavy loads, high repetition jobs, exposure to hand-arm vibration and to ove…
Many efforts have been done to increase efficiencies and margin (without ignoringthe quality) in casting industry. Most of the producer of Therefore the research is intended to improve the process of making pulleys as cast product by changing the mold of the process from green sand casting mold to permanent mold (stee…
To enhance the sensitivity of nonenzymatic glucose biosensor, the electrode for glucose sensing is prepared using multi-walled carbon nanotubes (MWCNTs), gold (Au), and different quantity of copper oxide (CuO). The prepared electrode shows the highest sensitivity for glucose at a concentration of 0.1 M CuO. This value…
Appearing with a trace! A new colorimetric nanosensor for CrVI from the amyloid fibrils of hen lysozyme has been developed. This nanosensor, which makes use of hen lysozyme fibrils as CrVI binders and acidified diphenylcarbazide (DPC) as the colorimetric probe, can specifically detect CrVI at the ppb level without sam…
Biofuels are renewable solutions to replace the ever dwindling energy reserves and environmentally pollutant fossil fuels. Therefore, large surpluses of glycerol, biodiesel byproduct, are generated. Glycerol is used as an ingredient in cosmetics, foods and pharmaceutical products. Heterogeneous catalysts are potential…
The present stage of development of experimental techniques allows the synthesis of complex colloidal particles whose surface can be precisely "decorated"with different physical and / or chemical properties (active sites). Such colloids are usually defined as patchy particles as a result of the modification of parts o…
Comprehensive knowledge of the optical properties, particularly of the room \ntemperature (RT) photoluminescence (PL), of ZnO is essential for the future employment of this wideband \ngap (~3.3 eV at 300 K) II-VI compound semiconductor in photonic and optoelectronic device \nstructures [1]. Hence, vigorous research ac…
7th Textile Bioengineering and Informatics Symposium (TBIS 2014) / 5th Asian Protective Clothing Conference (APCC 2014), Hong Kong, Peoples R China, 6-8 August 2014
In this work the effect of line‑shaped defects on the motion of water drops on superhydrophobic surfaces have been investigated using high‑speed video. The defects were introduced on superhydrophobic wax surfaces by a simple scratching method. It is shown that the motion of the drop in the vicinity of the defect can b…