Materials Literature
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This work studies the behavior of multidirectional composite laminate under mode I & II loading. The material used is a Carbone/Epoxy composite and the staking sequences allowed studying the characteristics of delamination for the 22.5°/-22.5°, 45°/-45° and 67.5°/-67.5° interfaces. The DCB test and the ENF test was ch…
In a marine environment, specific proteins are secreted by mussels and used as a bioglue to stick to a surface allowing generate irreversible bonding. Adhesive secreted proteins of mussels present an unusual amino acid 3,4-dihydroxyphenylalanine (DOPA). Inspired by the struc- ture and properties of mussel adhesive pro…
Novel Ce3+ and Tb3+ co-doped LiLa2BO5 phosphor, synthesized by a solid state reaction in reductive atmosphere, exhibits enriched emission spectrum in the green region .The XRD patterns, photoluminescence spectra and SEM were recorded and the effects of Tb3+ and Ce3+ concentration, sintering condition on the luminescen…
Cubic Cu2O nanoparticles were synthesized via hydrothermal route without template. The study of different reaction conditions reveals that the concentrate of NaOH affects the size and the morphology of nanocubes.
In the present study, various quantities of Li2CO3 were added into Bi0.5(Na0.82K0.18)0.5TiO3 (abbreviated as 0.82BNT-0.18BKT) ceramics. For 0.82BNT-0.18BKT ceramics, the electromechanical coupling coefficients of the planar mode kp reaches 0.22 at the sintering of 1125 oC for 3 h. High-density samples were obtained th…
This report provides a summary of the literature review that was performed and based on previous work performed at the Idaho National Laboratory studying the Three Mile Island 2 (TMI-2) nuclear reactor accident, specifically the melted fuel debris. The purpose of the literature review was to document prior published w…
An effect of addition of CaO on electrical resistivity in BaTiO3-(Bi1/2Na1/2)TiO3(BT-BNT) solid solution ceramics was investigated. Three kinds of CaO adding processes were applied. Extra CaO additive against stoichiometric composition is effective to give semiconductive property into the BT-BNT ceramics. However, the…
Both novelty and inventive step are a core in the patent system. Novelty is one patentability which is introduced from the concept that a claimed...
In this research present the results of the analysis of Sm3+ ions doped bismuth borate glasses. Optical measurements such as absorption, excitation and emission profiles have been carried out. Glasses with the chemical compositions (50-x)B2O350Bi2O3xSm2O3 (x = 0.0, 0.5, 1.0, 1.5, 2.50 and 2.5 mol%) were prepared using…
A mathematical model for the assessment of the insulation of underground pipelines, which allows to determine the area of damage. Established the importance of the influence of various factors - the «age» of the pipeline, the diameter and depth of the foundation, the type of insulation, insulation thickness - the degr…
Reportage sur le potentiel du nouveau verrat hybride Rekor d'ADN a la SCEA de Tregoen, notamment au niveau des performances d'engraissement et de l'homogeneite des porcs charcutiers.
There were many studies on premixed flame propagation in tubes, including open tubes and enclosures. Yet, no sufficient data obtained for explosion properties in medium scale piping system to assist engineers or practitioners in determining the potential hazard posed due to explosion. In this work, an experimental stu…
تولید متابولیتهای ثانویه با استفاده از روشهای کشت بافت از جمله کشت سلول و اندامهای گیاهی یک روش جایگزین مناسب برای بهرهبرداری از ترکیبات گیاهی است. با تغییر غلظت هورمونی در محیطهای کشت بافت گیاهی میتوان تولید متابولیتهای ثانویه را از نظر کمی یا کیفی بهبود بخشید. چای کوهی با نام علمی Stachys lavandulifulia، یک گ…
Non-uniform stress and strain fields are prevalent in many tissues in vivo, and often exacerbated by disease or injury. These mechanical gradients potentially play a role in contributing to pathological conditions, presenting a need for experimental tools to allow investigation of cell behavior within non-uniformly st…
摘要： 采用球磨法将酸功能化碳纳米管（AMWCNTs）与环糊精均匀混合。 酸功能化有利于增强碳管和环糊精间的相互作用，从而使二者形成均匀、有效的复合。 在N2气保护下碳化并经后续的ZnCl2活化处理，最终获得酸功能化碳纳米管/多孔碳(PC)复合体材料。 采用透射电子显微镜、X射线衍射和拉曼光谱等方法对材料结构进行了表征。 结果表明，碳纳米管在多孔碳骨架内均匀分布，并且复合体同时具有较高的比表面积和良好的导电性。 循环伏安及恒流充放电等电化学测试表明，由于二者的协同作用及碳纳米管在多孔碳骨架内均匀、有效的复合，材料具有较好的电化学储能性能和良好的电化学稳定性。 电流密度为0.5 A/g时，AMWCNTs/PC12-4（其中12代表β…
The thesis is about the flame retardant optimization of carbon fiber reinforced fuselage structures in the event of a pool fire incident. For this purpose two general concepts, the use of glass formers on a laminate surface and intumescent agents in an intermediate layer, have been followed. Several flame retardants (…
Semen gigi ZOE ( Zinc Oxide Eugenol ) merupakan semen gigi berbahan dasar Zinc Oxide dengan campuran liquid eugenol yang memiliki sifat mekanik yang rendah dibandingkan semen gigi yang lain sehingga diperlukan penambahan Al2O3 dan zat aditif MgO pada semen gigi tersebut. Pada penelitian ini, dilakukan variasi penambah…
Chromium is one of the widely used metal in the today’s industrial society. It is used as a anticorrosive agents, oxidants, dyes, preservatives for woods, and leather treatments. In this paper, trivalent(Cr 3+ ) and hexavalent(Cr 6+ ) chromium in the soil near the house was analyzed and the chromium concentration dist…
An AlGaN/GaN metal—insulator—semiconductor high-electron-mobility transistor (MISHEMT), with sodium beta-alumina (SBA) for both gate insulation and surface passivation, was investigated and compared with a conventional metal—semiconductor high-electron-mobility transistor (MESHEMT). The measured gate leakage current o…
본 연구에서는 프린터 토너의 대전량 제어제로 사용되는 아연 착화합물 제조시 금속염과 다가알코올을 첨가함에 따라 변화되는 입자 형태, 평균 입도 및 마찰대전량에 대해 고찰하였다. 아연 착화합물을 제조하기 위해 염화아연과 3,5-di-tert-butyl salicylic acid를 사용하였다. 다가알코올을 첨가함에 따른 입자 형태 변화를 확인하기 위해 아연 착화합물 제조시 폴리에틸렌글리콜(PEG-300), 글리세린 및 에틸렌글리콜을 첨가하였고, 금속염인 염화알루미늄을 첨가함으로써 변화되는 입자크기를 확인하였다. 또한 금속염과 다가알코올을 동시에 첨가하여 입도 변화를 확…