Materials Literature
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Abstract Smell is an essential sense that allows animals to find food and mates while avoiding predators. In humans smell is considered an aesthetic sensory modality, but olfactory disorders may presage neurological disease including Parkinson's, Alzheimer's, and schizophrenia. The odorant receptors (ORs) comprise the…
Abstract The impending shortage of fossil fuels and environmental consequences of fossil fuel consumption are two of the most imperative problems in the world. This presentation is about a novel design of a solar reactor cavity system composed of a camera-like aperture and moving-wall system to house a unique thermo-f…
Abstract Debated among scientists for decades, observations of compositional differences between different crystallographic faces within a same growth zone, called ‘sector zoning’, represents a major challenge for geochemistry and in particular for isotope geochemistry. Nowadays, convincing evidence for the existence…
Development of interleaved power converters with coupled inductors has enhanced converters performances (better power density, eciency, transient response. . .). Such improvements lead to the necessity of a precise current-sharing in the converter legs, and consequently to much more complex control strategy for those…
In order to improve material’s lifetime used at a temperature above 2500°C and under oxidizing atmosphere, a solution is to use a surfacing protection constituted of non oxide refractory materials. One of the main objectives of this thesis is to select and experimentally validate new chemical coating compositions whic…
This slide presentation describes new fractionation methods that are used to create dust that is respirable for testing the effects of inhalation of lunar dust in preparation for future manned lunar exploration. Because lunar dust is a very limited commodity, a method that does not result in loss of the material had t…
Le sujet de these s’inscrit dans le cadre des strategies visant a organiser des nanostructures, plus particulierement les strategies visant a augmente la densite d’information dans les medias magnetique. Les techniques de synthese en chimie douce utilises au LPCNO-INSA on permet d’elaborer des nano-bâtonnets monocrist…
Neste trabalho foram avaliadas as atividades de catalisadores do tipo perovskita LaNi 1-x Co x O 3 frente à reação de reforma a vapor de etanol.Devido à baixa área superficial, característica de óxidos do tipo perovskita, esses foram suportados em SiO 2 , Al 2 O 3 e ZrO 2 , a fim de verificar o efeito do suporte na at…
This chapter contains sections titled: Introduction Experimental Procedure Results: Controlled Nanoparticle Synthesis Discussion: Nanoparticle Specific Properties and Applications Conclusions Acknowledgments
Nanoporous polymer technologies present exciting new opportunities for fine tuning polymers for applications in ultrafiltration, selective membranes, or even selective catalysis. Polyethylene is a great candidate for such applications with its chemical robustness and favorable thermal properties. Block copolymers serv…
Recently the structure of disordered gold-polymer(PMMA-Au) thin films have been measured using Small Angle X-ray Scattering (SAXS). We have analyzed these experimental results using the fractal SAXS theory. The films are formed of polymer-embedded gold nanoclusters and were fabricated by very low energy gold ion impla…
Innovative Materialien sind die treibende Kraft für technologischen Fortschritt und damit für die internationale Konkurrenzfähigkeit der Industrie. Erst kürzlich wurde ein weiteres Arbeitsfeld erschlossen: die Nanotechnologie. Nanokristalliner Diamant (NCD) ist ein Produkt dieses neuen Gebietes. Neben der Möglichkeit…
The decision to implement the Innovation in Nuclear Infrastructure and Engineering Program (INIE) was an important first step towards ensuring that the United States preserves its worldwide leadership role in the field of nuclear science and engineering. Prior to INIE, university nuclear science and engineering progra…
Results of detailed investigations of stability of phases in substances with the small difference in the energies of the ferroelectric and the antiferroelectric types of dipole ordering are presented. It is shown that interaction of locally separated domains of the ferroelectric and antiferroelectric phases stabilizes…
This chapter contains sections titled: Introduction Experimental Results and Discussion Conclusions
For the first time it is shown that for thin metallic films thickness of which does not exceed thickness of skin - layer, the problem of description of surface plasma oscillations allows analytical solution under arbitrary ratio of length of electrons free path and thickness of a film. The dependance of frequency of s…
L'organocatalyse asymetrique est un domaine en plein developpement. L'immobilisation de ce type de catalyseurs pourrait presenter de multiples avantages. Ces travaux de these s'interessent a la preparation de silices hybrides organiques/inorganiques par voie sol-gel et aux applications de ces materiaux en organocataly…
The reflectivity at normal incidence of copper and aluminum samples was recently measured over a large frequency range at Brookhaven by one of us (JT). Then using the Kramers-Kroning integrals, and assuming the free-electron model of conductivity, the dependence of conductivity on frequency was obtained. The results s…
Nowadays, numerical modeling is an indispensable tool for the prototyping of electromagnetic converters. Magnetic materials play an essential role into the energy conversion so it is necessary to control their behavior as well as their modeling. The objective of this work is to develop realistic laws of material behav…
Ce travail s'est interesse a la conception et a l'elaboration de nouveaux agents structurants de silice constitues d'assemblages induits et reversibles de copolymeres originaux : les copolymeres sequences doublement hydrophiles (DHBC). Un des systemes etudies est constitue d'un DHBC neutre-anionique PAPEO-b-PAA ou pol…