Development of a new water container of plastic- or plastic
Die vorliegende Diplomarbeit ist die Neuentwicklung eines Löschwasserbehälters in Kunststoff- beziehungsweise Kunststoff
Materials Literature
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Investigations of vitreous silica sintering by spark plasma.
A obtenção da sílica vítrea pelo processo de sinterização por plasma pulsado (SPS), a partir de matérias-primas de diferentes estruturas (cristalina e amorfa) e diferentes granulometrias, foi investigada. Análises de difração de raios X, transmitância óptica, microscopia óptica e eletrônica de varredura, e medições de…
Characterization of pretreated lignocellulosic fibers by means of techniques spectroscopy and high resolution optical microscopy
Neste trabalho, fibras de eucalipto pré-tratadas diferentemente com ácido e/ou enzima foram investigadas visando se verificar alterações estruturais decorrentes dos pré-tratamentos. Na caracterização foram empregadas técnicas de microscopia eletrônica, de fluorescência (campo de claro), de fluorescência confocal de va…
Effect of the incorporation of short amorphous silica fibers in polypropylene composites used by the national automotive industry.
A adição de fibras de sílica em compósitos de polipropileno (PP) foi investigada neste trabalho como uma proposta de desenvolvimento de novos materiais utilizados pela indústria automotiva, os quais permitam a redução de peso do veículo e a consequente economia de combustível. As fibras são leves, constituídas de síli…
Busca heurística e inferência de parâmetros cinéticos de reações de hidrotratamento de óleo diesel a partir de dados experimentais escassos
Currently, the amount of contaminants (such as sulfur, nitrogen and aromatics) in diesel oil is strictly controlled, due to their impact on pollutant emissions. The most important process used to meet fuel specifications regarding contaminants is the catalytic hydrogenation, specifically hydrotreatment (HDT). Optimiza…
Size classes and ways of applying lime to corn crop
Lime particle size is key to soil correction as it defines the reactivity of the soil due to its low solubility. The lime presenting a particle size larger than 0,3 mm corrects soil acidity and enables soil residual effect whereas the finely ground lime presents a lower residual effect, however; it promotes soil acidi…
Estimativa simultânea da capacidade de calor volumétrica e da condutividade térmica de materiais metálicos
O conhecimento preciso das propriedades termofísicas, condutividade térmica e capacidade de calor volumétrica, é muito importante, por exemplo, na otimização de projetos em engenharia e no desenvolvimento de novos materiais. Então, apresenta-se neste trabalho um método para a estimativa simultânea destas propriedades…
Trichomycterus payaya Sarmento-Soares & Zanata & Martins-Pinheiro 2011, new species
Trichomycterus payaya, new species Figs. 1-7 Holotype. MNRJ 36665, 37.4 mm SL, Brazil, Bahia, Miguel Calmon, riacho Olhos d’água on road BA-131, tributary to rio Itapicurumirim, rio Itapicuru drainage, between Miguel Calmon and Jacobina, 40º36’21.9”S 11º20’19.5”W, 505 m a.s.l., 12 Jun 2005, A. Zanata, P. Camelier, J.…
Trichomycterus payaya Sarmento-Soares & Zanata & Martins-Pinheiro 2011, new species
Trichomycterus payaya, new species Figs. 1-7 Holotype. MNRJ 36665, 37.4 mm SL, Brazil, Bahia, Miguel Calmon, riacho Olhos d’água on road BA-131, tributary to rio Itapicurumirim, rio Itapicuru drainage, between Miguel Calmon and Jacobina, 40º36’21.9”S 11º20’19.5”W, 505 m a.s.l., 12 Jun 2005, A. Zanata, P. Camelier, J.…
ТЕСТУВАННЯ МЕТОДИКИ СПІЛЬНОГО СТАТИЧНОГО РОЗРАХУНКУ СИСТЕМИ «СПОРУДА – ҐРУНТОВИЙ МАСИВ»
The numerical simulation methodology of the process of interaction between structures and soil massif has been developed. The main feature of this static analysis technique is consideration the structure and soil massif as unified system “structure – soil massif”. The verification of this technique has been conducted.…
Race and America's Immigrant Press
Race was all over the immigrant newspaper week after week. As early as the 1890s the papers of the largest Slovak fraternal societies covered lynchings in the South. While somewhat sympathetic, these articles nevertheless enabled immigrants to distance themselves from the "blackness" of victims, and became part of a s…
高い結晶性と純度を有する多孔性"貴金属"錯体の新合成法
We successfully synthesized high crystallinity Rh-based metal-organic frameworks (MOFs), {[Rh2(BDC)2][Cu2(BDC)2]}·4DMF (RhCu-DMF), {[Rh2(BDC)2]- [Zn2(BDC)2]}·3.8DMF (RhZn-DMF), and {[Rh2(BDC)2][Cu2(BDC)2]}·EtOH·2H2O (RhCu- EtOH), by assembly of discrete paddlewheel rhodium terephthalate (4) and Cu2+ or Zn2+ ions. We r…
Molecular structure and rheology of polypropylene in blown film processing
Polypropylene (PP) is one of the most important polymers in use. It is a cheap commodity plastic, yet useful for manufacturing a range of versatile products. One of the prominent applications of PP is the production of biaxially oriented PP film (BOPP), which became an irreplaceable material for food and tobacco packa…
VANADIUM SUPPORTE SUR MONTMORILLONITE INTER CALEE AU TITANE V/TI -PILC: PREPARATION, CARACTERISATION ET REACTIVITE EN EPOXYDATION DU CYCLOHEXENE
Dans cette étude, nous avons formulé quatre matériaux catalytiques à base de la bentonite de Maghnia. Ces matériaux préparés sont caractérisés par spectroscopie IRTF, UV-Vis et microscopie MEB. L’analyse IRTF montre des bandes caractéristiques de déformation et d’élongation des liaisons V-O-V et V-O et des liaisons O-…
Table des matières
Spis treści w języku francuskim.
Biolignine™ : Structure and Application to epoxy resins synthesis
Le travail réalisé porte sur la caractérisation et la valorisation de la Biolignine™ de paille de blé extraite à l'échelle semi-industrielle par le procédé CIMV. La première partie est consacrée à l'étude structurale du produit et à la quantification de ses diverses fonctions hydroxyles et acides carboxyliques. Dans l…
New elements to understand hydrogen diffusion and trapping mechanisms in quenched and tempered HSLA martensitic steels
La Fragilisation par l’hydrogène (FPH) est un phénomène complexe de dégradation des matériaux métalliques dont les mécanismes sont dépendants de nombreux paramètres tels que la nature du matériau (composition chimique, traitement thermique), l’environnement ou l’état de contrainte. L’objectif de ce travail est d’appor…
Rietveld structure refinement of the kyanite crystal from Negovanu (Sebes-Lotru series) using X-ray powder diffraction data
Kyanite is one of the three Al2SiO5 polymorphs, the other two being andalusite and sillimanite. The three aluminum silicate polymorphs (kyanite, sillimanite, and andalusite) are of major importance in metamorphic and experimental petrology because of their abundance in metamorphosed lutitic rocks and relatively simple…
Spin effects in coherent nanoconductors with ferromagnetic contacts
The manipulation of the electronic spin degree of freedom is an important goal in the context of the development of quantum information and spin electronics. Coherent conductors connected to ferromagnetic contacts are particularly interesting in this context. Indeed, they are subject to spin-dependent quantum interfer…
All in One ‐ Complete Issue: ChemInform 30/2011
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading chemistry journals. The following PDF file contains a complete ChemInform issue, thus enabling easy electronic browsing further facilitated by electronic bookmarks.