Materials Literature
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Для двух образцов оксида алюминия ( -оксид марки Degussa и образец, синтезированный путем гидролиза хлорида алюминия) с помощью анализатора Zetasizer Nano исследованы электрофоретическая подвижность и размеры частиц в зависимости от pH в интервале 311 и концентрации фонового раствора NaCl (10-3 10-1 М). Расчет величи…
As the candidate for self-morphing elements and structures, the bending of composite beams including shape memory alloy fibers or plate is examined in terms of simple beam theory. The constitutive relation describing the internal stress/strain arising from the shape memory effect of the fibers is the key point of this…
Методами оптической спектроскопии, микроскопии, гравиметрии исследованы превращения в наноразмерных пленках висмута при Т = 293 К в зависимости от толщины (156 нм) и времени (1 мин5400 ч) контакта с газообразным аммиаком. В зависимости от первоначальной толщины пленок висмута кинетические кривые степени превращения…
Even though high precision analytical devices are developed in qualitative and quantitative determination of substance or substances in matrix samples (biological, environmental, food etc.), analytical devices mostly fail determining in matrix environment. Due to such reasons, clean-up process is needed to take (purif…
Thin films of fullerene derivative were prepared by an electrospray deposition (ESD) method using six types of fullerene derivatives (a series of [6,6]-Phenyl-C61-butyric acid ester and adducts of C60 with indene). The optimized conditions for fabricated thin films were investigated by ESD process using 1.0 mg/mL dilu…
We report on the fabrication of water-free fluorotellurite glass fiber with high nonlinearity. By the continuous-wave self-phase modulation method, the nonlinear refractive index n2 is estimated to be 1.4×10-18 m2/W at 1550 nm.
New chelating ion exchange resin containing hydroximate of 5 amino salicylic acid was synthesized by incorporating it in divinylbenzene styrene (DVBS) copolymer. Hydrophilic polysaccharidematrix ofguaran was also used to incorporate hydroximate of 5 amino salicylic acid in it. The resin characteristics were studied by…
The shaping conditions for a spur gear with an inner spline by cold extrusion by reducing the outer diameter or expanding the inner diameter of the workpiece were examined experimentally. The specifications of the spur gear examined are as follows: module m=1.0-2.0, number of teeth Z=22-13, and tooth depth h=2.25m; th…
Early events of protein folding have been investigated by a cryo-stopped-flow method with ultraviolet circular dichroism, fluorescence and X-ray solution scattering as probes. We found that α-helices were formed very rapidly as a folding nucleus within the dead-time of the stopped-flow apparatus. In the case of ubiqui…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Kavita Sharma, V. Raghavendra Reddy, Ajay Gupta, R. J. Choudhary, D. M. Phase, A. Banerjee, V. Ga…
The probabilistic fracture mechanics analysis code PASCAL3 has been developed at JAEA to support the validation of the codes and standards that provide the structural integrity assessment method for reactor pressure vessels (RPVs) during pressurized thermal shock. The previous version of PASCAL2 has many functions inc…
Pt-Sn/Al2O3 catalyst is well known to have good activity and selectivity for propane dehydrogenation reaction but suffers quick deactivation due to substantial coke formation. In this study effort has been made to improve the characteristics of this catalyst by making tri-metallic catalyst supported on gamma alumina.…
采用高能球磨法制备了纳米TiN/Ti复合晶粒细化剂,研究了该细化剂对Al-4Cu合金的铸态组织及固溶时效后性能的影响,并探讨了复合细化剂的细化机理。结果表明,纳米TiN/Ti复合细化剂对Al-4Cu合金的铸态组织有明显的细化效果,添加0.2%的TiN/Ti细化剂的合金中α-Al相平均尺寸由161μm细化至131μm,且细化效果优于纯Ti。经过固溶时效处理后,添加TiN/Ti细化剂试样的时效硬度（HV）峰值为125,比未添加细化剂时提高了19%,其抗拉强度和屈服强度比未添加细化剂的Al-4Cu合金试样分别提高了103.1%和155.42%,且添加了TiN/Ti细化剂的试样拉伸断口形貌由未添加细化剂的韧窝-准解理混合型断口转变为韧窝型…
Recently, it has been proven that directional flow of photogenerated charge carriers occurs on specific facets of TiO2 nanocrystals. Herein, we demonstrate that the photocatalytic activity of anatase TiO2 nanocrystals in both photoreduction and photooxidation processes can be enhanced by selectively depositing Pt nano…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation S. Shukla, S. Kumar; Effect of Zn incorporation on the optical properties of thin films of Se85Te…
In the R&D for creating a product or business, the approach is taken where the necessary elemental technologies are integrated to achieve the goal, while many basic researches are driven by intellectual curiosity. On the other hand, in the R&D conducted using public funding, basic and fundamental researches that canno…
ガラス繊維やカーボン繊維，近年では環境調和型として天然繊維で強化された熱可塑性樹脂複合材料の適用が増えている。母材が熱可塑性樹脂のため圧縮成形や押出成形，射出成形等と機械化へと移行している。その結果，自動車分野などの汎用機器製品を対象とする大量生産分野へ変化している。一方，機械的特性はアスペクト比の増加に従って向上し，連続繊維の場合で最大であるが，製品の成形性は低下する。しかしながら，アスペクト比による成形性の変化にかかわらず，繊維分散性は重要である。とくに，繊維分散性は，成形品の表面性状に直接影響し品質バラツキに影響する。すなわち，アスペクト比に関係なく，繊維の均一分散は，長期使用される大量生産分野では必要不可欠な解決すべき課題…
Dielectric spectroscopy is used to investigate the electrical properties of Bi0.5Sr0.5FeO3. From the Rietveld refinement of X-ray diffraction (XRD), it was found that this sample has cubic symmetry with space group pm-3m and lattice parameter 3.9422 Å. Bi0.5Sr0.5FeO3 exhibits high dielectric constant value upto 106. T…
Electromagnetically induced transparency (EIT) is a quantum phenomenon which shows a narrow transparent window over a wide absorption spectrum. In recent years, however, EIT-like spectrum has been realized by using of metamaterials with the dark mode resonator [1,2,3]. These EIT-like spectra by metamterials can be exp…
摘要：通过常规固相法合成0．79ZnAl204-0．21TiO2（ZAT）复相陶瓷，研究了不同添加量ZnO—B205一Si02（ZBS）玻璃对ZAT陶瓷烧结特性和微波介电性能的影响。通过X射线衍射和扫描电镜研究ZAT陶瓷的物相结构和微观形貌。添加ZBS玻璃可有效降低ZAT陶瓷的烧结温度；Ti02和ZnAl204发生反应生成微量的ZnTi05物相；当ZBS玻璃添加量为12wt％时，ZAT陶瓷烧结温度降低至950℃，并获得较好的微波介电性能：er=11．2，Qf=18085GHz，r＋=-26ppm／℃，可作为应用于低温共烧陶瓷（LTCC）的潜在材料。