Materials Literature
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We derive the d-dimensional scattering cross section for homogeneous and composite hyper-particles inside a metamaterial. The polarizability of the hyper-particles is expressed in multi-dimensional form and is used in order to examine various scattering characteristics. We introduce scattering bounds that display inte…
Ju, Young Min PhD; Choi, Jin San MS; Aboushwareb, Tamer MD, PhD; Atala, Anthony MD, FACS; Yoo, James MD, PhD; Lee, Sang Jin PhD Author Information
Abstract This work presents a theoretical and experimental analysis of a crossflow microfiltration process of silica particles in suspension. The silica suspensions were 0.001 M of NaCl with a pH of 6 (to maintain a constant ionic force within the medium to produce a stable silica particle suspension) for three differ…
Abstract A detailed examination has been carried out of the microstructural evolution and mechanical properties of samples of T91 and T92 steels which have been subjected to both a ‘normal’ preservice heat treatment and an extended stress relief heat treatment at 765°C for up to 16 hours. The samples have subsequentl…
The transition from the behavior of a single dislocation interacting with a field of fixed obstacles to the collective motion of multiple dislocations is studied below the depinning transition (thermally activated glide). In absence of interactions, a truncated power law distribution of jump amplitudes (avalanches) wi…
[Ni(hmp)(MeOH)Br]4 ⋅ 2H2O has been prepared by the reaction of 2-hydroxymethylpyridine with NiBr2 ⋅ 3H2O and characterized by IR, elemental analysis, powder X-ray diffraction, thermogravimetric analyses, magnetic measurements, and single crystal X-ray diffraction. The crystal structure shows two independent [Ni(hmp)(M…
Earlier we reported on the synthesis of α,4-dicarboxy-2-nitrobenyzl caged compounds (Schaper, K. et al. [2002] Eur. J. Org. Chem., 1037-1046). These compounds have the advantage of an increased hydrophilicity compared with the well-established α-carboxy-2-nitrobenzyl caged compounds; however, the release of the active…
Abstract Cold working and bending during boiler manufacturing can induce strain hardening in austenitic stainless steel, potentially compromising creep ductility and leading to premature failures during operation. While design codes like ASME I, PG 19 provide guidelines for maximum strain levels before solution treati…
This study evaluated the convenience and heating performance of 4 heated vests on the market through a trial of the vests. Participants were four healthy men who wore the garments outside in cold temperatures typical of the garments' real conditions of use. As the results, all the participants preferred the product, h…
The present article introduces a survey on ultrasonic technologies applied to material processing and describes the possibilities of improving the quality of coating made by thermal spraying introducing ultrasound into the covering process. The article contains the results of some other research works and discusses a…
Department of Chemistry, Jai Narain Vyas University, Jodhpur-342 005, Rajasthan, India E-mail : krg2004@rediffmail.com Manuscript received 24 July 2009, revised 22 January 2010, accepted 8 February 2010 The conversion of solar energy on the basis of photogalvanic effect in liquid phase photogalvanic solar cell Is stud…
전력계통의 신뢰도와 배전계통의 유지보수는 매우 밀접한 관계가 있다. 본 논문에서는 정전비용의 최소화를 목적함수로 배전계통의 유지보수 계획을 수립하는 방안을 제시한다. 시변고장률을 이용하여 배전계통 내 특정설비의 고장으로 인한 정전비용을 수식화하고 공급구역의 정전비용을 목적함수로 최적화를 수행하며 경제성 분석을 통하여 투자비용 제약을 적용하여 유지보수를 위한 투자설비 우선순위를 결정한다. 제안한 방안을 검증할 모델계통은 국내의 도심지역 변전소를 통해 만들었으며, 제안된 방안의 신뢰도의 이득을 평가함으로서 그 타당성을 검증하였다.
Abstract The reaction mechanism for nitrous oxide (N2O) decomposition has been studied on AlO(+) site in AlO‐ZSM‐5 zeolite using the MP2/6‐31+G(d) method. The active centers were taken to be mononuclear [AlO]+ and [AlO2]+, and the surrounding portion of the zeolite was represented by a 3T cluster, namely [AlSi2O4H8]−.…
The free radical copolymerization of (5-bromo-1-Benzofuran-2-yl)(phenyl)-O-methacrylketoxime (BPMKO) with 2-(4-acetylphenoxy)-2-oxoethyl-2-methylacrylate(AOEMA) has been carried out in 1, 4-dioxane at 65°C ± 1 and was analyzed by Fourier transform infrared, 1H-NMR, 13C-NMR and gel permeation chromatography. Elemental…
PURPOSE: The purpose of this study was to assess the contribution of sodium orthovanadate (SOV)-induced phosphatase inhibition to the activation of rat retinal pigment epithelium (RPE) cells. METHODS: Confluent cultures of rat RPE cells were treated with the general phosphatase inhibitor SOV. The effects of SOV on the…
The 3ω technique has been applied to measure thermal properties of thin films and suspended wires. In this article, we report the implementation and technical design of a 3ω system to measure the thermal conductivity in small dimension structures. Alternating current is applied to a line heater that dissipates power a…
Indium doped zinc oxide films (ZIO) were deposited on non-alkali glass substrates by radio frequency (RF) magnetron sputtering at room temperature. The structural, electrical and optical properties of the ZIO films were investigated as a function of their $In_2O_3$ content (3.33-15.22 wt%). The ZIO films deposited wit…
Poly(meta-aryl sulfide sulfone imide imide) (m-PASSII) was synthesized by one-pot process using 4-chlorophthalic anhydride, 3,3′-diamino diphenyl sulfone and sodium sulfide (Na2S· xH2O) as starting materials in N-methyl-2-pyrrolidone at atmospheric pressure. The intrinsic viscosity of m-PASSII was obtained with optimu…
Monte-Carlo simulation technique is often used in order to predict service life of concrete structure subjected to chloride penetration in marine environment based on probability theory. Monte-Carlo simulation method, however, the method gives different results every time that the simulation is run. On the other hand,…
잔사회와 준설토를 효과적으로 자원화하기 위하여 8~10 mm 크기의 구형 인공 골재를 성형하였다. 출발원료는 입도 및 조성을 변화시켰으며 $1050{\sim}1250^{\circ}C$ 범위에서 소결하였다. 제조된 골제는 KS에 의거하여 골재의 밀도와 흡수율 시험을 진행하였다. 잔사회와 준설토는 고온에서 철 함유 물질과 알칼리/알칼리토 산화물에 의한 발포 기구가 적용됨을 예측할 수 있었다. To effectively utilize resources of reject ash and dredged soil, globular shape-formed artificial li…