Fine Films
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. Estudio de la microestructura de un cordón de soldadura de un acero P91 mediante microscopía electrónica de transmisión
ABSTRACT In the present work the microstructural characterization of a single-pass weld of 9Cr1MoVNb P91 steel performed by the flux-cored arc welding (FCAW) process in the “as welding” condition has been carried out by means of transmission electron microscopy. P91 steel offers a good weldability, but the mechanical properties of the welded joints are f
Matéria (Rio J.). Publicado em: 19/07/2018
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2. Immobilization of proteins onto polysaccharide surfaces / Imobilização de proteínas sobre superfícies de polissacarídeos
This thesis presents the study on thin film formation and characterization of xyloglucans extracted from two different sources, Hymenaea courbaril (HXG) and Tamarindus indica (TXG) onto Si/SiO2 wafers or amino-terminated wafers, as well as the application of these films as substrates for the immobilization of the lectin concanavalin A (Con A) by means of ell
Publicado em: 2008
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3. Construção, caracterização e aplicação de eletrodos para descarga por arco de cátodo oco
O sistema construído para caracterizar eletrodos e, conseqüentemente, filmes finos depositados é constituído por um cátodo oco que trabalha a altas e baixas pressões (aproximadamente 10-3 a 5 mbar), uma fonte DC (0 a 1200 V), uma câmara cilíndrica de borossilicato fechada por flanges de aço inox com uma associação de bombas de vácuo mecânica e d
Publicado em: 2008
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4. Effects of carbon matrix pressure on xenon atoms / Efeitos da pressão exercida por uma matriz de carbono em atomos de xenonio
Neste trabalho foi preparada uma série de filmes de carbono amorfo pelo processo de IBAD (Ion Beam Assisted Deposition), onde foi utilizado um feixe iônico de Xe com energia fixa para todas as amostras em 1500eV para realizar sputtering em um alvo de grafite e, um segundo feixe de Xe + responsável pelo bombardeio do filme durante o crescimento. Para cada
Publicado em: 2005
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5. FÃsico-quÃmica interfacial de filmes mistos de fosfolipÃdeos e Ãcido Ãsnico
The usnic acid it comes as a yellow pigment, of strong character hidrophobic, being insoluble in water and glicerol, partially soluble in etanol and easily soluble in ether, acetone, benzene and chloroform. Produced by liquens seeking your defense, the acid Ãsnico is in the shaft liquÃnico, where your concentration seems to be related with the integral amo
Publicado em: 2004
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6. Polymeric nanocomposites containing azodyes, phthalocyanines and luminescent polymers / Compósitos poliméricos nanoestruturados de azocorantes,ftalocianinas e polímeros luminescentes
This thesis describes the fabrication and possible applications of layer-by-Iayer (LBL) nanostructured films for three distinct systems comprising i) azopolymers and azodyes, ii) organometallic molecules (phthalocyanines) and iii) luminescent polymers and azodyes. Optically induced birefringence and surface relief gratings (SRGs) were studied in the azobenze
Publicado em: 2003
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7. Nanoparticulas de ouro passivadas com tiois : caracterização estrutural e formação de supercristais auto-organizados
Nanometer-sized particles (1-100 nm) have attracted great interest since their high surface-to-volume ratio may lead to novel physical and chemical attributes. In particular, they can be used as building blocks to produce ideal nanostructured solids (cluster-assembled materials ? CAMs), which involves three steps: synthesis, characterization of individual pr
Publicado em: 1999
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8. Propriedades eletroquimicas e eletrocromicas de poli(anilina) preparada quimicamente
Poly(aniline), PANI, is known since the last century. It is one of the most stable and attractive conducting polymers. PANI is generally prepared by oxidation of aniline in acid medium, using a chemical oxidant or by electrochemical oxidation. For technological purposes and large scale synthesis the chemical method is more adequate. As a consequence, in this
Publicado em: 1991
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9. Follow up study of workers exposed to man made mineral fibres.
A survey of workers in seven man made mineral fibre (MMMF) production plants, the subject of a previous report, was conducted, with other blue collar workers serving as regional comparisons. Based on the median reading of chest radiographs by five readers, a low prevalence of small opacities, all at the 1/0 and 1/1 profusion levels, was again found: for work
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10. Electron microscopy of the reactions of anti-poly A. poly U and anti-poly I. poly C antibodies with synthetic polynucleotide complexes and natural nucleic acids.
The reactions between purified anti-poly A. poly U and-poly I. poly C. antibodies (IgG and IgM), and synthetic and natural polynucleotides were visualized at the molecular level. This was achieved by the use of fine tungsten bidirectional shadowing of molecules adsorbed onto thin carbon films, combined with dark field electron microscopic observation. A prog
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11. Pulmonary effects of exposure to fine fibreglass: irregular opacities and small airways obstruction.
OBJECTIVE--Man made mineral fibres imitate asbestos and produce tumours of the pleura in animals. To answer the question, Does prolonged exposure to fibreglass adversely affect pulmonary function or produce radiographic abnormalities in human subjects? we studied workers in a midwestern appliance plant where refrigerator doors and previously entire cabinets
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12. A recombinant baculovirus 42-kilodalton C-terminal fragment of Plasmodium falciparum merozoite surface protein 1 protects Aotus monkeys against malaria.
The immunogenicity and protective efficacy of baculovirus recombinant polypeptide based on the Plasmodium falciparum merozoite surface protein 1 (MSP-1) has been evaluated in Aotus lemurinus griseimembra monkeys. The MSP-1-based polypeptide, BVp42, corresponds to the 42-kDa C-terminal processing fragment of the precursor molecule. Immunization of Aotus monke