Materials Literature
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锭子 Fe2O3@Au 核心 / 壳粒子的制造和特征被调查，并且核心 / 壳 nanoparticles 的效果作为表面提高了拉曼光谱学(重量的单位) 活跃底层被学习。由使用催化种子的减小技术，有锭子形态学的各向异性的 Fe2O3@Au 核心 / 壳粒子成功地被准备。有锭子形态学的 Fe2O3 粒子开始作为原来的核心被准备。2 nm 的 Au nanoparticles 通过 organosilane 分子被依附到 Fe2O3 粒子上。形成到 Fe2O3 核心上的一致 Au 壳由 Au nanoparticles 修改了通过在原处 HAuCl4 的减小。壳厚度通过调整 HAuCl4 答案的集中被控制。TEM， XRD 和紫外力的描…
Abstract. The research is carried out in how to change the corrosion resistance on surfaces (created by plasma arc cutting) of low-alloy and non-alloy structural steel as well as non-alloy tool steel C80U. The effect of corrosion resistance on steel surfaces of alloyed components Cr, Mn, Si is examined. The processes…
Nitrogen is an essential element to sustain life, being a component of most biological macromolecules. In spite of the abundance of gaseous N2, the availability of nitrogen compounds that can be readily used by most microorganisms is scarce and its production energetically demanding. Due to the central importance of n…
用高温固相反应法合成了BaxCe0.8Ho0.2O3-α（x=1．03，1，0．97）系列固体电解质，粉末XRD结果表明．各材料均为钙钛矿型斜方晶单相结构。用交流阻抗谱技术研究了材料在600～1000℃下、湿润氢气和湿润空气气氛中的导电性；研究了它们的氢-空气燃料电池性能；讨论了材料的非化学计量组成对其电性能的影响。结果表明，在600-1000℃温度范围内、湿润氢气和湿润空气气氛中，该系列材料的电导率随温度和钡离子含量的变化均与以该系列材料为固体电解质的氢-空气燃料电池性能随温度和钡离子含量变化的次序一致，即：非化学计量组成材料BaxCe0.8Ho0.2O3-α（x=1．03，0．97）具有较化学计量组成材料BaxCe0.8Ho0…
As part of its overall cleanup activities, the U.S. Department of Energy (DOE) has identified two alternative remediation plans for the 126,000 cubic meters (m3) of radioactive transuranic (TRU) waste generated from defense-program activities that were disposed in shallow burial at DOE sites before 1970: (1) removal f…
The effect of aging on microstructure of Mg-Zn-Er alloys at 473 K was investigated using hardness measurement,scanning electron microscopy(SEM) and transmission electron microscopy(TEM).The results indicated that both Mg3.8Zn1.5Er and Mg5Zn2.0Er alloys exhibited visible age-hardening effect,especially the latter alloy…
Four-point bending beam (4PB) test has been widely used for predicting the stiffness and fatigue life of asphalt materials. However, in Switzerland, coaxial shear tests (CAST) and two-point bending beam (2PB) tests have been used to obtain the complex modulus and the fatigue behavior of asphalt materials. Recently, a…
Health related issues, stringent environmental protection policies, search for cost effective and alternative materials, crave for renewability and sustainability and quest for high performance materials for structural applications give the motivation for research in polymer composites and material science. Due to the…
The properties of metal oxide catalysts and hence, catalytic activity are highly dependent on the composition and structure of these oxides. This dissertation has 3 parts – all directed towards understanding relationships between structure, composition and activity in metal oxide catalysts. The first part of this diss…
Summary The text shows the influence of parameters of machine cutting on wear and tear of drills which are made of low-alloyed high-speed steal SW2M5 while holes drilling in spheroid cast iron samples GGG50. The results showed that only wear and tear of the VBwo tops is monotonically rising in a time and can be assume…
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 A. V. Afanasjev, H. Abusara; Covariant Energy Density Functionals: Time‐Odd Channel Investigated.…
Mittels der kurzwelligen, in der Größenordnung der Kristallabstände liegenden, Wellenlänge der Röntgenstrahlung ist es möglich, neben der nun schon bekannten Phasenanalyse auch Informationen zur Kristallanordnung und der Kristallitorientierung zu erhalten.
In this thesis we perform theoretical investigations on the optical properties of geometrically infinite metallic nano-structures such as nanoparticle/film systems and periodic nanoparticle arrays. We apply both Plasmon Hybridization (PH) and Finite-Difference Time-Domain (FDTD) methods and we obtain quantitative agre…
The synthesis of a novel amphiphilic comb-shaped copolymer consisting of a main chain of styrene-(N-(4- hydroxyphenyl) maleimide)(SHMI) copolymer and poly(ethylene glycol) methyl ether methacrylate(PEGMA) side groups was achieved by atom transfer radical polymerization(ATRP).The amphiphilic copolymers were characteriz…
This study presents a set of experiments designed to study the stability over time of the conducting polymer poly(3,4-ethylene dioxythiophene) (PEDOT), under simulated physiological conditions. Esp ...
Over the past few decades, III-V nitrides have attracted much attention due to the possibility to realize high efficiency optoelectronic devices covering all the UV and visible part of the light spectrum. However, the device fabrication has gone much faster than the understanding of the physical phenomena occurring in…
有关来自鼠皮的Ⅰ型胶原的α-1链的一级结构（氨基酸连接次序），是通过1982年出版的由A．G．沃德和A．考茨所著的“TheS cience and Technology of Gelatin”的中译本“明胶的科学与工艺学”而介绍给国内读者的。这个α-1（Ⅰ）的结构是我国明胶界比较熟悉的。然而α-1（Ⅰ）链不仅有来自鼠皮的，也有来自鸡骨的，还有来自人体的，称为人胶原的α-1链（α-1 chain of human collagenⅠ）。
Chemical Modification of water-dispersible Carbon nanotubes(CNTs) is an important way to develop new CNTs materials in bio-sensor,medicals,materials and electrical devices.Chemical modification includes non-covalent and covalent approaches.The former is mainly realized by adsorption of surfactant,conjugate-structured…
Las investigaciones en el ámbito de la catálisis implican el estudio de procesos y mecanismos en diferentes condiciones operativas y catalizadores así como el diseño, preparación y caracterización de nuevos materiales para tal aplicación. En relación a los procesos de interés tanto en petroquímica como en química fina…
Voor een stal voor 550 zeugen waarin gewerkt wordt met wisselgroepen en stro in het ligbed is een investeringsbedrag (excl. btw) berekend van 2.100 euro per zeugenplaats. Voor een stal, waarin gewerkt wordt met stabiele groepen, met voerligboxen met uitloop is dat 2.420 euro. Voor een vleesvarkensstal met 4.200 dierpl…