Materials Literature
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Numerous restraints and simplifications have been developed for methods that anticipate protein structure to reduce the colossal magnitude of possible conformational states. In this study, we investigated if globularity is a general characteristic of proteins and whether they can be applied as a valid constraint in pr…
Dye-doped ORMOSIL (organically modified silicate) nanoparticles (NPs) have significant advantages over single-dye labeling in signal amplification, photostability and surface modification for various biological applications. The dyes: Rhodamine 6G (R6G) and Rhodamine B (RB) were successfully incorporated into ORMOSIL…
The main objectives of the present study are to develop/manufacture SiC reinforced aluminium matrix composite (SiCp/AMC) with different reinforcement combinations using stir casting method and investigate the effects of heat treatment on wear performance. AMCs were prepared using 20 vol% SiC with three different reinf…
A new Fe(II) complex, [Fe(HIM2Py)2(N(CN)2)2] · 2H2O (HIM2py = 1-hydroxyl-2(2′-pyridyl)-4,4,5,5-tetramethyl-4,5-dihydro-1 H-imidazole), has been synthesized and characterized. The X-ray analysis reveals that HIM2py ligands are coordinated to iron as an unusual six-membered bidentate chelate with κ2N(py), O(HIM) mode. T…
This paper reports the investigation on the flexural properties of activated carbon filled epoxy composites. The Comparison of the properties between different sources of activated carbon, are illustrated. It has to be disposed safely or used for recovery of valuable materials as agricultural wastes like bamboo stem,…
Here we continue the description of the previously found passive amplification effect in thin pyroelectric films placed on a massive heat-conducting substrate. We show that in the definite modulation frequency range the amplification effect occurs i.e., a current generated by a thin pyroelectric film placed on substra…
본 연구에서는 우주 파편들과의 초고속 충돌로부터 우주 구조물을 보호하기 위한 새로운 하이브리드 복합재료 쉴드가 제안되었다. 제안된 쉴드의 유한요소 모델을 구성하고, 에너지 흡수율을 예측하기 위해서 유한 요소 해석을 수행하였다. 최종모델의 해석에 앞서 각 구성 요소인 알루미늄 판, PMMA 판 그리고 중간층인 직물 섬유의 해석이 먼저 수행되었으며, 각 요소의 유한요소 모델의 타당성이 검증되었다. 해석에 사용된 재료 물성은 고 변형률 속도에서의 재료 물성들을 예측하여 사용하였으며, 해석 결과 개별 요소의 에너지 흡수율이 직물섬유를 제외하고는 잘 맞음을 확인하였다. 이후…
본 논문에서는 금속촉매를 이용하여 육각형 GaN 피라미드의 꼭지점 부분에만 마이크로 크기의 GaN 구조를 선택적으로 성장시킬 수 있는 결정 성장 방법에 대하여 연구하였다. GaN Template 위에 $SiO_2$ 막을 증착하고 3 ${\mu}m$ 의 원형 패턴을 형성하여 metal organic vapor phase epitaxy (MOVPE) 방법으로 선택적 결정 성장에 의해 GaN 피라미드를 성장한 후, photolithography 공정을 이용하여 피라미드 꼭지점 부분에만 Au화 Cr을 각각 증착하였다. GaN 피라미드 구조의 꼭지점 부근에만 금속이 증착된…
The organic-silicon films, polytetrafluorethylene (PTFE) films and its composite films with copper have been fabricated from an active gas phase by pulse laser dispersion from initial powder species. The features of all films obtained were studied with the application of attenuated total reflection-Fourier transform in…
원자력발전소에서 나온 사용후핵연료 건식저장시스템의 안전한 운영과 유지는 기본적으로 적절하게 선택된 설계기준에 좌우된다. 저장시스템의 가장 중요한 설계목표는 저장된 사용후핵연료로부터 작업자의 안전과 대중에게 과도한 위험이 없이 보관, 취급, 수납 및 감시할 수 있는 신뢰를 제공하는 것이다. 이러한 목표를 달성하려면, 시스템의 설계, 사용후핵연료로부터의 잔류 열을 제거하고 방사선 차폐를 제공함과 동시에 설계 기준에 지정된 시스템의 수명동안 격납을 유지하기 위한 기능을 포함한다. 운영 중 발생가능한 설계사항은 설계 기준에 반영되어야 한다. 본 논문에서는 건식저장시스템의…
Solution-treated Al-4wt%Cu was strain-cycled at ambient temperature and above and the precipitation behavior investigated by TEM. In the temperature range 100°C to 200°C precipitation of Θ´´ appears to have been suppressed and precipitation of Θ´ promoted via cyclic strain. Anomalously rapid growth of precipitates app…
The photoalignment technology for the alignment of liquid crystal molecules has lately gathered much attention because its advantages over the conventional rubbing of polyimide coating and several different approaches for the realization of photoalignment have been presented. Due to its non-contact nature, a photoalig…
Abstract The title compound is hydrothermally synthesized from a mixture of UO3, CsOH, CsF, CsCl, Al, and GeO2 (Cs:U:Al:Ge = 14.6:1:0.3:7; gold ampule, autoclave, 585 °C, ≈160 MPa, 4 d, 45% yield).
A complex sample structure including nematic liquid crystals (NLC) with organic thin film (2-(naphtha[3,4]imidazol-2-yl) quinoline) (NIQ) is applicative to the photoluminescence (PL) study in this report. The pumping beams of 325 nm and 390 nm are used to excite the complex sample structure and the NIQ thin film. The…
There has been a significant research interest in metal micro-forming for the last ten years. However, neither a methodology nor an exact micro mechanical property has been well determined. Hence, several experiments are carried out in this research to point out the influence of “size effect”. Based on the comparison…
This book describes certain fundamentals of laser-induced breakdown spectroscopy (LIBS) and the experimental results obtained from ultraviolet-visible-near infrared (UV-Vis-NIR) spectra induced by laser ablation of a graphite target. The characteristics of the spectral emission intensities from the different species h…
A laboratory study was conducted to determine if binder elasticity tests of asphalt binders could be used as an indicator of the fatigue characteristics of Hot Mix Asphalt (HMA) mixtures. This concept was evaluated by comparing the ranking of several binders' elasticity test results to the ranking of the corresponding…
Abstract Review: 207 refs.
Abstract Microcrystalline powders of the title clathrate phase (1.3 < x < 1.9, space group Pm$\bar 3$ n) are synthesized within a few minutes by oxidation of Ba4Li2Si6 with gaseous HCl obtained from NH4Cl (two‐zone furnace: 210 and 400 °C, 6.67 mbar HCl, single‐zone furnace: 500 °C, 15 min).
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