Materials Literature
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Aluminium doped zinc oxide (AZO) has attracted significant attention for replacing ITO. In the current work two approaches are presented for the wet-chemical processing of AZO. \n \nChemical solution deposition of aluminium doped zinc oxide, by spin coating a 2-butoxyethanol precursor, yields TCO coatings with a trans…
Cette these presente une nouvelle methode pour le diagnostic intelligente de courtcircuit entre spires dans le stator, l'un des defauts les plus courants du generateur asynchrone a double alimentation (MADA); d'abord les resultats obtenus sont tres significatifs et assorti pour le signal non stationnaire et ont ete ef…
The present investigation deals with the cultural studies, pigment analysis, lipid profiling, total sugar content, extracellular ammonium excretion and molecular characterization of cyanobacterium Gloeotrichia ghosei BTA 9020 (NCBI accession no. KM435243). Initially isolate was identified and grouped on the basis of m…
Предложен метод расчета энергии деформации на поверхности полупространства полупроводниковой пластины с заглубленными квантовыми точками. Показано, что поверхность квантовой точки можно аппроксимировать ограниченным числом плоских треугольников. Это позволяет провести интегрирование функции Грина в аналитическом виде.…
Import 23/07/2015
Vapor–liquid equilibria (VLE) were determined in the polystyrene + toluene system under isothermal conditions using an improved all-glass microebulliometer with circulation of the liquid phase for the dynamic measurement of the total pressure over liquid mixtures. The experimental data were correlated using the univer…
Definition of influence of magneto-abrasive machining (MAМ) on parameters of microgeometry of working surfaces, hardness of the taps made of fast-cutting steel, and also on their working capacity was the aim of the work. Experimental researches were performed on taps М10 made of fast-cutting steel on the experimental…
For two periods in Australia's history, the 1920s and the 1950s, the motor industry was the largest sector of Australian manufacturing. While a great deal has been written about it, a survey of the material relevant to this study shows that little deals with automotive design
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To this review the list of basic structurally-technological methods of prevention of speed-up wear of internal channel of artillery barrels is driven. Certainly, that principal reason of wear is burning down of internal skim of metal without violation of form of barrel. The basic methods of prevention of wear of barre…
The effect of incorporation of bismaleimides and bisphenol ÂÂ A based polysulfone (PSF) into epoxy has been studied. The formulated matrices were characterized in terms of FTIR, DSC, TGA, HDT, thermal ageing characteristics, SEMand water absorption behaviour. The incorporation of both polysulfone and bismaleimide int…
Zinc oxide and copper oxide semiconductor nanostructures have tremendous potential in optoelectronic applications and energy technology. ZnO-CuO nanocomposite have been synthesized by energy efficient hydrothermal method from single stock solution. Structural properties of the nanocomposite samples were characterized…
摘要： 针对二维三轴编织复合材料纤维束路径周期波动问题，给出空间周期三次样条的求解方法，基于周期三次样条曲线段，求解任意一点处单元材料主方向。建立非对称的透镜形纤维束横截面，并考虑纤维束横截面随纤维路径产生的扭曲。基于区域叠合思想，利用直接网格建模而后切割的参数化单胞网格建立方案生成二维三轴编织复合材料更为精细的参数化单胞模型。基于Murakami损伤理论建立正交各向异性损伤本构模型，利用等价位移控制实体单元相应模式下损伤的演变发展，在单胞模型中引入界面单元，考虑界面相损伤对材料损伤演变过程的影响，预测45°编织角二维三轴编织复合材料在轴向和横向拉伸载荷作用下的强度以及细观损伤起始、扩展和最终失效过程。数值预测结果与试验结果吻合较…
Alum has been extensively used in the coagulation process in water treatment. Potassium alum, which is a hydrated form of potassium aluminium sulphate, is one of the alum categories used as a coagulant agent in water treatment. Today, the permitted baseline level of the aluminium in treated water is 0.2 ppm as declare…
摘要： 热棘轮失效是薄壁圆筒的主要失效模式之一，现有ASME锅炉及压力容器规范和EN13445等设计标准主要考虑环向应力，而未考虑轴向应力条件，使得设计结果可能偏于不安全。针对循环热-机械双轴载荷下薄壁圆筒热棘轮设计理论的不足，采用非循环分析方法系统研究双轴应力状态下薄壁圆筒热棘轮极限的解析解，重点考虑轴向压缩应力对循环温度梯度和稳定内压组合载荷下薄壁圆筒热棘轮极限的影响，并提出相应的设计方法，并采用有限元法对理论结果进行验证。结果表明，循环热-机械载荷下轴向压缩应力会显著降低薄壁圆筒的热棘轮极限，且理论解与有限元分析结果吻合良好，这说明此方法可用于循环热-机械双轴载荷及类似工况下薄壁圆筒的热棘轮设计限，具有良好的工程价值。
A new amorphous organic-Inorganic hybrid silica materials have been prepared by the conventional sol-gel reaction of bis(gamma-trimethyoxysilyl)propylamine (TMSPA) and Tetraethyl Orthosilicate (TEOS) in the presence of Cetyltrimethylammonium bromide (CTAB) as a structure directing agent. The hybrid was analyzed by usi…
Terbium complexes doped PMMA polymer rod shape samples were synthesized at several concentrations. The vibronic transitions, absorption as well as emission for Tb3+ ions have been discussed in polymer host. The concentration quenchingcreatesluminescence decay then redaction inthe energy transfer to the Tb+3 ions from…
In this investigation, the effect of low energy impact to the residual strength and modulus of short kenaf fibre reinforced epoxy composites were investigated. The composites were made from hand lay-out technique and subjected to low impact energy at the 20%, 25% and 30% of impact failure values. The load-time curve e…
Polydiacetylenes (PDA) have been widely investigated as smart sensing materials because of their unique optical properties. PDA showed the color change from blue to red by some external stimulus. Due to this property, PDAs have been widely studied as a sensing material in chemistry and biological industry. In this stu…
본 연구는 널리 알려진 이차원 물질 중 하나인 이황화 텅스텐 (WS2) 단층의 성장과정과 성질을 분석한 내용을 담고 있다. 최근 몇 년간 금속의 성질을 띠는 그래핀의 약점을 대체할 수 있는 물질로 WS2 같은 이차원 반도체가 제안되었고, 많은 연구가 진행되어왔다. WS2 같은 이차원 반도체들은 원자 수준으로 얇고 투명하면서 직접천이를 하기 때문에 다양한 광전자 소자로 응용이 가능하다. 특히 WS2는 다른 이차원 반도체들에 비해 뛰어난 광학적 성질이 보고되고 있어 잠재성이 높은 물질이다. 하지만 대면적의 단층 WS2를 합성을 위해 핵 생성 및 성장 과정에 대한 이해는…