Materials Literature
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The multistep growth of various coordination polymers has been demonstrated to induce formation of well-defined multilayered core–shell structures. Composition of these structures can be fine-tuned by altering the sequence of the multistep-growth process. More details are given by M. Oh et al. in their Communication o…
Abstract The draglines of Nephila and Cyrtophora spiders have been studied by means of X‐ray diffraction method in wet and drying conditions. Both spiders are commonly found in environs in Taiwan. Nephila spider is the biggest orb web spider in Taiwan and Cyrtophora is one of large spiders which build 3D web. There ar…
Paul Dan Cristea, professor of Electrical Engineering and Computer Science at 'Politehnica' University of Bucharest died on 17 April 2013, following several years of bravely battling a perfidious illness.
The standard enthalpies of formation of LnM II MnFeO 5.5 manganitoferrites (Ln is a rare-earth element, and M II is an alkali-earth metal) were estimated by the developed method of calculation. Their standard entropies were calculated by the method of ionic increments, and their standard Gibbs energies of formation we…
Este trabalho apresenta os avanços no desenvolvimento de um novo método de ensaio não-destrutivo magnético.O método está baseado na técnica do Ruído Magnético de Barkhausen (RMB), particularmente em uma variante denominada Barkhausen Contínuo.O RMB é gerado devido à ação de um campo magnético variável magnetizante que…
This paper compares the influence\nof the temperature of the electrolyte\nin corrosion resistance of ceramic\ncoatings of Chromium Nitride (CrN)\nproduced with the unbalanced magnetron\nsputtering system (UBM)\nwith industrial metallic coatings of\nhard chromium and organic epoxy\npaints. All coatings were deposited\n…
Ferro casting ductil (FCD) group from cast iron decant,easy it is to make cheap and the it belongs to the nature mechanical much the same to with the conventional steel. This cast iron manyweared upon which substitution become militant speciallyfor the component of otomotip. Many ways to increase the nature of fisis a…
An organic polymer containing chiral(R)-(+)-1,1′-binaphthol[(R)-(+)-BINOL] building blocks(Polymer) has been prepared through Click reaction(Huisgen 1,3-dipolar cycloaddition) of(R)-(+)-6,6′-diethynyl-1,1′-binaphthol and 1,4-diazidobenzen in the presence of Copper(Ⅰ).The composition,structure and morphology of Polymer…
The title compound, Na[Cu(en)2][Cu(CN)4], where en represents ethyl-enedi-amine, NH2CH2CH2NH2, crystallizes as a salt with two distinct cations, Na(+) and [Cu(II)en2](2+), and discrete [Cu(I)(CN)4](3-) anions. The anion geometry is tetra-hedral, with angles at the copper atom ranging from 105.0 (1) to 115.4 (1)°. The…
The discovery of a two-dimensional (2D) electron gas at the (110)-oriented LaAlO3/SrTiO3 in- terface provided us with the opportunity to probe the effect of crystallographic orientation and the ensuing electronic reconstructions on interface properties beyond the conventional (001)-orientation. At temperatures below 2…
The aim of this project is to investigate the suitability of specific polymers inclusions in improving some important mechanical properties of single crystals of calcite. The mechanical properties of synthetic and mineral single crystals of pure calcite are reported and compared with synthetic and biogenic crystals in…
bons momentos que passamos juntos neste período.
We have studied relationship between local lattice disorder, Ru 4$d$ spin-orbit interaction, and global spin/orbital orders of Ca$_{2-x}$Sr$_x$RuO$_4$ in the Sr-rich and Ca-rich regions of its phase diagram by using unrestricted Hartree-Fock calculation on a $8\times8$ RuO$_4$ lattice model. The calculations show that…
This project examined the ecologically and economically valuable eastern oyster (Crassotrea virginica) in Louisiana with two field experiments. Little information has been gathered on the performance of local Louisiana oyster stocks and no study has focused on a comparison of stocks among variable estuarine conditions…
Abstract In this article, the recent advances in polymer‐based microgels for catalysis are reviewed. Discussion is directed to the smart design of catalyst‐embedded microgels and the catalytic performance. Polymer microgels consist of intramolecularly cross‐linked globular architectures with the dimensions of nano‐ or…
4-n-Alkoxyphenyl4-[(4-n-alkoxy-2,3,5,6-tetrafluorophenyl)ethynyl]benzoates (compound A) are synthesised by a convenient method. These compounds exhibit only enantiotropic nematic phases and have very high clearing points. These compounds (As) can be transformed into corresponding ethane derivatives, via hydrogenation…
以NaOH为沉淀剂,采用沉积-沉淀法制备了α-MnO2负载Au催化剂xAu/α-MnO2（x=1.0%～7.0%,质量分数）,利用X射线衍射（XRD）、N2吸附-脱附、H2程序升温还原（H2-TPR）、透射电子显微镜（TEM）和X射线光电子能谱（XPS）等技术对所得样品进行了表征,并对其催化氧化挥发性有机化合物（VOCs,苯和甲苯）的性能进行了研究.XRD结果表明,负载Au对α-MnO2载体结构影响不大,但对其晶粒大小和比表面积略有影响.随着Au含量的增加,α-MnO2结晶度增强,颗粒增大,Au粒径明显增大.XPS结果表明,随着Au负载量的增加,xAu/α-MnO2的晶格氧（O2-）,Mn4＋和Au3＋的浓度增加.H2-TPR结果…
North Carolina State University Theses Textile Engineering, Chemistry and Science.
Calculation of alkali metals salts solubility is made using two approaches: thermodynamic (or power) and on values of charge and ionic radius sizes. The estimation of salts and oxyhydroxides solubility for elements of 1А subgroups of periodic table is given.
The paper considers the main points and the equations of the theory of elasto-plastic deformation. There are allocated the material functions, trailing the theory. The basic experiment and the method of identification of material functions are formulated. On the basis of the experiment there are determined material fu…