Materials Literature
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Titanium and its alloys have been used in biomedical applications because of their satisfactory mechanical properties, biocompatibility and corrosion resistance. Their high corrosion resistance has been attributed to the formation of a thermodynamically stable titanium oxide layer on the surface of these materials. In…
The effect of changes in grain size on corrosion resistance of the pure tough pitch copper stripwas investigated in acidic and alkaline NaCl solutions. Accumulative roll bonding as sever plastic process was applied up to 8 cycles to produce the ultrafine graincopper. Polarization and electrochemical impedance tests we…
Analysis of molecular interaction and conformational dynamics of biomolecules is of paramount importance in understanding their vital functions in complex biological systems, disease detection, and new drug development. Plasmonic biosensors based upon surface plasmon resonance and localized surface plasmon resonance h…
We present the results of atomistic and ab initio simulation of several different tilt grain boundaries (GB) in silicon. The boundary structures obtained with genetic algorithm turned out to have no coordination defects, i.e. all silicon atoms restored their tetrahedral coordination during the structure optimisation.…
It is well known that in the gradient expansion approximation to density functional theory (DFT) the gradient and Laplacian of the density make interchangeable contributions to the exchange correlation (XC) energy. This is an arbitrary "gauge" freedom for building DFT models, normally used to eliminate the Laplacian f…
Present work focuses on the effective doping of multi-walled carbon nanotube (CNT) in the ZnS:Cu phosphor system and thereafter improvement in the optical performance of electroluminescent (EL) device due to the effect of increased local field. To facilitate doping of CNTs into the phosphor and decrease the operating…
Dissertação (mestrado)—Universidade de Brasília, Instituto de Química, Programa de Pós-Graduação em Química, 2013.
Colloids with anisotropy in shape and / or interaction can be used to model the self-assembly of complex subunits into larger structures. A good candidate as a model system for these subunits, are micron-sized patchy particles that consist of rough and smooth parts. These particles interact via a roughness directed de…
Because of several - sometimes extreme - complications caused by cracks and weak spots in a metal industry roll, it is of great importance to detect these defects in time. Measurements on rolls with artificial- and natural defects have been performed. An imaging operator is introduced, which uses the measurement data…
Este proyecto pretende resolver un problema encontrado en la empresa FORMACOP de la ciudad de Itagüí, Antioquia, empresa dedicada a la producción de copas para brasier a gran escala mediante el proceso de prehormado. El uso de energía eléctrica en sus procesos productivos se presenta como la problemática a resolver. S…
A esquistossomose humana, doença causada pelo S. mansoni e com 6 milhões de infectados somente no Brasil, possui uma única estratégia terapêutica eficiente atualmente disponível. Esta se baseia na utilização de praziquantel e relatos de cepas resistentes à essa droga tem despertado o interesse da comunidade científica…
Compósitos de Carbono Polimérico Vítreo/sílica foram preparados por carbonização de resinas fenólicas e sílica xerogel. A idéia por trás deste estudo é a obtenção de um eletrodo composto através da polimerização simultânea de oligômeros de fenol-formaldeído e monômeros de tetraetoxisilano ou viniltrietoxisilano forman…
As much as there is known about the phase behavior in systems of rods and systems of spheres, not much is known about systems in which both particles exist. Such systems, containing both rods and spheres, are experimentally studied by making samples containing 3μm by 0.6-0.7μm silica spherocylinders and silica spheres…
The hydrogen sorption behavior of the Mg2FeH6eMgH2 hydride system is investigated via in-situ synchrotron and laboratory powder X-ray diffraction (SR-PXD), differential scanning calorimetry (DSC), scanning electron microscopy (SEM), particle size distribution (PSD) and volumetric techniques. The Mg2FeH6eMgH2 hydride s…
This chapter contains sections titled: Introduction Modeling & Method Results Conclusion Acknowledgement
This chapter contains sections titled: Introduction Initial Calculations Model Description Results Conclusions Future Work
This chapter contains sections titled: Introduction Experimental Results and Discussion Conclusions Acknowledgments
This chapter contains sections titled: Introduction Experimental Procedure Results and Discussion Summary Acknowledgements
This chapter contains sections titled: Introduction Materials and Experimental Procedure Results and Discussion Conclusions Acknowledgements
This chapter contains sections titled: Introduction Experimental Procedure Results and Discussion Summary