Materials Literature
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A number of solid substances ware examined by nuclear magnetic resonance methods with a view to investigating possible molecular motion. The possibility of using the adiabatic rapid passage technique as a method for investigating the molecular motion in the solid state was studied. Two systems, namely benzene and fura…
Solid-State Circuit Breakers (SSCBs), or Contactors, are critical components in next generation electric aircraft, and must be small in size, fast in response, and have high reliability. Silicon Carbide (SiC) semiconductor switches provide a series of improvements over traditional silicon-based breakers in both electr…
本論文係有關NaYF4:Yb,Er/二氧化矽/阿拉伯膠近紅外光上轉換複合奈米粒子之製備及作為兼具螢光顯影與藥物釋放功能之生醫奈米載體的應用研究。關於其製備，首先利用奧士瓦熟成法合成NaYF4:Yb,Er奈米粒子，接著以溶凝膠法在逆微胞系統中被覆二氧化矽奈米殼層在NaYF4:Yb,Er奈米粒子表面，製得NaYF4:Yb,Er-SiO2核殼型奈米粒子(NaYF4:Yb,Er@SiO2)。接著，以(3-氨基丙基)三乙氧基矽烷將二氧化矽表面修飾成具有氨基，最後再將阿拉伯膠(GA)以碳二醯胺活化法接枝在氨基化之二氧化矽表面，製得阿拉伯膠修飾之NaYF4:Yb,Er@SiO2複合奈米粒子(NaYF4:Yb,Er@SiO2@GA)。透過利用穿透…
The study of catalytic activities of SiO2-Al2O3 mixed-oxide with various SiO2/ Al2O3 molar ratio functionalized with trimethoxysilylpropylamine ((CH3O)3 Si(CH2)3NH2) were studied for Aldol condensation of benzaldehyde and 1-heptanal to produce jasminaldehyde applying different reaction parameters. A number of Aldol co…
Pohjoismaisia sähkömarkkinoita ollaan avaamassa myös vähittäismarkkinoiden osalta. Jotta vähittäismarkkinoista saataisiin toimiva, kaikille avoin ja tasapuolinen kauppapaikka, on markkinamenetelmiä yhtenäistettävä. Yhtenäistäminen tarkoittaa muutoksia ennen kaikkea taseselvityksessä ja viestiformaateissa. Tämä tarkoit…
Получены и изучены состав, строение, каталитическая активность в модельной реакции окисления СО исходных и модифицированных никель-, медьсодержащих оксидных слоев на титановой основе. Авторы выражают благодарность сотрудникам Института химии ДВО РАН Недозорову П.М. и Кайдаловой Т.А. за помощь в проведении элементного…
R = 50 μm.Copyright information:Taken from "Insight into the early steps of root hair formation revealed by the cellulose synthase mutant of "http://www.biomedcentral.com/1471-2229/8/57BMC Plant Biology 2008;8():57-57.Published online 16 May 2008PMCID:PMC2396171.
Kajal kaolin deposit is located ~20 km northwest of Hashtjin, Ardebil province. Field evidence and laboratory investigations show that the deposit is an alteration product of ignimbrites, tuffs, and trachy-andesites of Eocene age. According to mineralogical data, the major rock-forming minerals include kaolinite, mont…
硫酸鈣（CaSO4）與碳酸鈣（CaCO3）由於良好的生物相容性，並且為人體骨骼內主要成分，兩者都廣泛應用於骨缺陷修補材料。此類填充材料的特點為硫酸鈣植入骨缺陷處會在體內降解並被人體吸收，同時產生鈣離子促進骨頭生長，但是若降解後新生骨骼還未生長成型，易形成缺陷而阻礙骨生長。 於硫酸鈣中添加碳酸鈣，碳酸鈣因降解速率慢，當硫酸鈣被人體降解吸收時，周遭碳酸鈣依然存在，因而形成孔洞促進骨細胞生長。將硫酸鈣與碳酸鈣複合成型，製成之骨替代之材料，可解決單一材料的不足性。本實驗依不同重量百分比混合硫酸鈣與碳酸鈣粉末，並水合硬化製成複合材料。再由SEM顯微分析及XRD繞射分析從結晶結構探討添加碳酸鈣對硫酸鈣的物理性質以及機械強度的影響，並量測其降解…
In this article, thermo-elastic-behavior of a thick-walled cylinder made from a polystyrene nanocomposite reinforced with functionally graded (FG) single-walled carbon nanotubes (SWCNTs) was carried out in radial direction while subjected to a steady state thermal field. The SWCNTs were assumed aligned, straight with…
To improve the sensitivity and application in aqueous solution of chemosensor towards Fe3+, we synthesized a chemosensor (FTC) based on conjugated fluorene core, which contains three crown ether moieties (monoaza-15-crown-5). The FTC is satisfactorily characterized by 1H NMR, COSY, NOESY, 13C NMR, FT-IR and elemental…
First, I would like to thank Brian McCandless for all of his help and patience with me during the course of this work, especially regarding his help with the variable angle spectroscopic ellipsometer. Further, I would like to thank Tiejun Meng for all his collaboration and help with measurements, Robert Birkmire for h…
In this work the superhydrophilicity of coatings on fluoropolymer were investigated. The different coatings were prepared by help of P25 Degussa TiO2 powder, titaniumisopropoxide, Lumiflon® and two different curing agents (BL 3175 and Cymel 303). The investigations were performed by help of a statistical planning proc…
Real-time chemical analysis during film growth by Molecular Beam Epitaxy (MBE) has been unattainable because traditional Ultra High Vacuum (UHV) tools such as X-ray Photoelectron Spectroscopy (XPS) or Auger electron spectroscopy (AES) cannot be used at pressures above 10-8 Torr, and MBE growth pressure are typically 1…
In this work, we discuss the prospects for the realization of silicon nanophotonic device structures on Si/Si1-хGex:Er/Si basis. In particular, the light emitters and lasers for the wavelength range of 1.54 μm being compatible with the modern VLSI technology are considered. The results of the analysis carried out to d…
This doctoral thesis deals mainly with the elaboration of new synthetic routes and self-assembly studies of monodendrons with wedge-shaped molecular architecture. The synthesis, thermal behaviour, liquid-crystalline properties and the self-assembly in bulk and thin films of a series of wedge-shaped monodendrons with v…
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The ion-induced reprecipitation of the emeraldine base form of polyaniline from an aqueous-organic binary solution is a facile method for obtaining polymer nanoparticles and microscale clusters. The hydrophobic collapse and aggregation that accompanies the addition of various cosolutes induces changes in the peak wave…
A crescente preocupação com o meio ambiente e as emissões atmosféricas, principalmente o CO2, alavancaram uma necessidade de se estudar formas de reduzir a emissão destes gases. As microalgas são uma grande alternativa neste sentido. Elas metabolizam o CO2 durante a fotossíntese, e, como uma vantagem adicional, ainda…
This thesis addresses a variety of different approaches in which structure based drug design plays an important role. Starting with de novo structure determination of macromolecules, followed by fragment screening via X-ray crystallography and finally the structure based lead discovery against malaria and tuberculosis…