Materials Literature
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The corrosion fatigue life analysis under variable amplitude loading is very complex due electrochemistry effects in crack tip exposed to salt spray matched to harmful effects of amplitude variable loading.This effects combination is not modeling mathematically actually, and the experimentally data observed in other r…
Los Alamos National Laboratory (the Laboratory) is the nation's premier national security science laboratory. Its mission is to develop and apply science and technology to ensure the safety, security, and reliability of the United States (U.S.) nuclear stockpile; reduce the threat of weapons of mass destruction, proli…
Ce mémoire présente les travaux réalisés durant ces trois années de thèse. Ils se sont orientés autour de l'étude des propriétés électroniques et magnétiques des matériaux pour la spintronique. Ce domaine d'avenir doit encore trouver les matériaux adaptés qui permettraient de réaliser les concepts liés à la spintroniq…
Les poly(3-hydroxyalcanoate)s ou PHAs sont des biopolyesters linéaires biodégradables et biocompatibles synthétisés par des microorganismes bactériens en tant que réserve de carbone et d'énergie. Ils sont synthétisés par des bactéries à partir de ressources renouvelables et la diversité de leurs structures possibles s…
Abstract An emulsion is a dispersion of one liquid in another, immiscible liquids usually in the presence of stabilizer molecules are called emulsifiers. Emulsions may be either oil droplets dispersed in water or water droplets dispersed in oil wherein the droplet diameters are in the 0.05–100 µm range. Emulsifiers ma…
Die Nachfrage nach Produkten auf Basis nachwachsender Rohstoffe wächst kontinuierlich und mit ihr die Bedeutung der Industriellen Biotechnologie. Das chemisch interessante Intermediat 1,3-Propandiol (1,3-PD) kann mittels mikrobieller Konversion aus Glycerin hergestellt werden. In Folge seiner Bifunktionalität, durch d…
ADVERTISEMENT RETURN TO ISSUEPREVAddition/CorrectionORIGINAL ARTICLEThis notice is a correctionCorrection to Biomimetic Monolayer and Bilayer Membranes Made From Amphiphilic Block Copolymer MicellesMatthew P. Goertz*, Lauryn E. Marks, and Gabriel A. Montaño*Cite this: ACS Nano 2012, 6, 7, 6527Publication Date (Web):Ju…
Systematic magnetic measurements have been performed in unique$α- MnO_2$ square nanotubes synthesized by a facile hydrothermal method with microwave-assisted procedures. Unusual magnetic phenomena (abnormal magnetization verse temperature (M - T) behaviour, large and abnormal magnetization hysteresis loop horizontal s…
The M2 machine gun has a Stellite-lined barrel. When Saboted-Light-Armor-Penetrator (SLAP) ammunition is fired in M2 barrels, the bore often constricts below the minimum diameter in less than 2,500 rounds. The requirement is 10,000 rounds. When fired with ball ammunition, the M2 barrel exceeds that requirement. Althou…
This chapter contains sections titled: General Properties and Classification of Enzymes That Hydrolyze Polysaccharides Fungal Cellulolytic Enzymes Nonenzymatic Proteins Involved in Cellulose Hydrolysis
The interpretation of some recent measurements of spin-dependent voltage for which the electric conduction does not play a role rises some new fundamental questions about the effects of spin-dependent heat currents. A two spin-channel model is proposed in order to describe the effect of out-of-equilibrium spin-depende…
Progressively, the well explored and studied mechanical properties of a bulk metal are compared with the corrosion behaviour obtained from its surface, which enables promising improvements in desired applications. An example is magnesium metal: where, by developing new types of surface modifications by understanding i…
Dentre as diversas formas de se tratar o câncer de próstata, a braquiterapia com sementes de iodo-125 é uma opção que apresenta ótimos resultados e menor ocorrência de efeito colateral. No presente trabalho diferentes métodos de deposição de iodo radioativo em substrato de prata foram comparados com o propósito de ele…
Power transformers are a key element in the transmission and distribution of electrical energy and as such need to be highly reliable and efficient. In power system networks, transformer core saturation can cause system voltage disturbances or transformer damage or accelerate insulation ageing. Low frequency switching…
Abstract Hydrogels are hydrophilic polymer networks that are able to swell and retain large amounts of water and maintain three‐dimensional swollen structures. These hydrogels do not dissolve in water. Common monomers and polymerization methods are discussed as well as synthesis and mechanism of biodegradable hydrogel…
We study the local moment formation and the Kondo effect at single-atom vacancies in Graphene. We develop a model accounting for the vacancy reconstruction as well as non-planarity effects induced by strain and/or temperature. Thus, we find that the dangling $\sigma$ orbital localized at the vacancy is allowed to stro…
We study the local moment formation and the Kondo effect at single-atom vacancies in Graphene. We develop a model accounting for the vacancy reconstruction as well as non-planarity effects induced by strain and/or temperature. Thus, we find that the dangling $σ$ orbital localized at the vacancy is allowed to strongly…
Effect of isovalent impurities Ca on optics and photoelectrical properties CdTe and ZnSe have been investigated. It is shown that phosphors with efficient near-band edge emission and photosensitive p-n-structures on the base of the doped materials could be obtained. Physical processes that determined photosensitivity…
The crystal structure of the ZrFe 1.8 Ni 0.2 D 3.4 and ZrFe 1.2 Ni 0.8 D 3.6 deuterides, which have high dissociation pressure, has been determined by neutron powder diffraction. The deuterides have the same structure as their parent intermetallic compounds, and the deuterium atoms occupy only position 96 g in the cub…
Gun barrel wear and erosion is similar to corrosion in that it is not considered a very glamorous or “high tech” field of investigation. Problems associated with these areas have been around since ...