Materials Literature
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Kurzfassung Ziel der hier vorgestellten Untersuchungen war es, die Einflüsse von variierenden thermischen Eigenschaften des Baustoffs sowie von unterschiedlichen Emissivitäten der Oberfläche auf die Ortung von Inhomogenitäten in Bauwerksstrukturen mit der aktiven Thermografie zu quantifizieren bzw. durch geeignete Aus…
Factor H (FH) is a plasma glycoprotein that plays a central role in regulating \nthe alternative pathway of complement. It is composed of 20 short complement \nregulator (SCR) domains. The SCR-1/5 fragment is required for decay acceleration \nand cofactor activity, while the SCR-16/20 fragment possesses binding sites…
The vast increase in the number of protein structures identified since the first high resolution protein structure was determined has shown that there are relatively few protein folds. The study of the folding of proteins has also expanded significantly since its inception. The contact-order of residues in the native…
The microstructure of directionally solidified AlSi7Mg0.6 alloys (A357) mainly consists of primary phase Al-dendrites in an AlSi eutectic matrix with some Mg2Si particles dilute in the interdendritic region. The dendritic network is conventionally characterized by measuring the primary dendrite spacing and the specifi…
Over the past decade, the development of surface-initiated living polymerization methods has brought a breakthrough to surface modification owing to their control ability. Surface-initiated atom transfer radical polymerization (si-ATRP), as the most popular one, has been widely employed to give novel polymer structure…
In this study, the opto-electric properties of EL devices with PMN dielectric layer with variation of firing tempereature were investigated. For the PMN dielectric layer process, the paste was prepared by optimization of quantitative mixing of PMN powder, $BaTiO_3$ , Glass Frit, $\alpha$ -Terpineol and ethyl cellulose…
Photoemission electron microscopy (PEEM) instruments image electrons photoemitted from samples illuminated by x-rays from a synchrotron. PEEM can be thought of as the x-ray equivalent of Auger electron spectroscopy. An image of the emitted electrons is produced by accelerating them through an electric potential and fo…
Die rasterelektronenmikroskopische Untersuchung von Anschliffen setzt eine gute Probenpräparation voraus. Dies führt insbesondere bei weichen Materialien oft zu Komplikationen, da durch eine rein mechanische Präparation die Schlifffläche wird in der Regel verformt wird. Zudem werden weichere Gefügebestandteile oft übe…
pela atenção e disponibilidade na realização de usinagem de peças.Aos Srs.Idacir Mantovanni, Ismael A.
This study investigates a pathway to nanoporous structures created by hydrogen implantation in aluminum. Previous experiments for fusion applications have indicated that hydrogen and helium ion implantations are capable of producing bicontinuous nanoporous structures in a variety of metals. This study focuses specific…
This chapter contains sections titled: Point of Purchase Packaging Poly(VINYL Chloride) Poly(Lactic Acid) Polycarbonate Polyesters, Thermoplastic Polyethylene, High-Density Polyethylene, Linear and very Low-Density Polyethylene, Low-Density Polymer Properties Polymeric Oxygen Scavenging Systems Polypropylene Polystyre…
The ditopic ligand, L1, contains both a bipyridine domain and a tetra-azacrown binding domain. Introduction of one equivalent of Cu2+ ions results in co-ordination of the ion by all four of the available N-donor atoms in the azacrown unit. However, introduction of further Cu2+ ions results in the formation of a variet…
In this study we used l-allyl-3-methyl imidazole formate ([Amim][COOH]) as ionic liquid to pre-treat the cellulose and determined the rate of polymerization and enzymatic hydrolysis. The results showed that pretreatment with ([Amim][COOHI) significantly decreased the cellulose polymerization. As the pretreatment tempe…
Natural surfaces are often structured with nanometre-scale domains, yet a framework providing a quantitative understanding of how nanostructure affects interfacial energy, gammaSL, is lacking. Conventional continuum thermodynamics treats gammaSL solely as a function of average composition, ignoring structure. Here we…
IntroducciónEl método de las diferencias finitas en el dominio del tiempo (DFDT) ha sido ampliamente utilizado en el campo del electromagnetismo, más concretamente en la región de microondas.En el área de la ingeniería óptica, este método no ha sido utilizado con mucha frecuencia debido los inconvenientes que implican…
In order to model the syn disposition of histidine residues in carboxylate-bridged non-heme diiron enzymes, we prepared a new dinucleating ligand, H[subscript 2]BPG[subscript 2]DEV, that provides this geometric feature. The ligand incorporates biologically relevant carboxylate functionalities, which have not been expl…
Using gold as seed particles, the vapour-liquid-solid (VLS) growth of GaAs nanowires by molecular beam epitaxy on GaAs (100) substrates was investigated with a view to understanding and controlling the growth directions of nanowires. The crystallographic orientation as well as surface density of nanowires was found to…
Tribological performance of nano fluids and others was conducted with the modified Four-Ball Friction and Wear tester at 100 C, 1200 RPM, 40 kg load for a duration of four hours for test. The higher than standard temperature is used to amplify the effect of the solid additives and the longer than standard test time is…
This report describes efforts to automate the biasing of coupled electron-photon Monte Carlo particle transport calculations. The approach was based on weight-windows biasing. Weight-window settings were determined using adjoint-flux Monte Carlo calculations. A variety of algorithms were investigated for adaptivity of…
A 3D time-dependent model of the VAR process has been developed using CFD techniques. The model solves the coupled field equations for fluid flow, heat transfer (including phase change) and electromagnetic field, for both the electrode and the ingot. The motion of the electic arc 'preferred spot' can be specified base…