Spray Forming
Mostrando 13-24 de 27 artigos, teses e dissertações.
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13. Crystallographic orientation-spray formed hypereutectic aluminium-silicon alloys
Aluminium-silicon alloys have been wide accepted in the automotive, electric and aerospace industries. Preferred orientation is a very common condition for metals and alloys. Particularly, aluminium induces texture during the forming process. The preparation of an aggregate with completely random crystal orientation is a difficult task. The present work was
Materials Research. Publicado em: 2005-06
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14. Corrosion performance of Al-Si-Cu hypereutectic alloys in a synthetic condensed automotive solution
In this investigation the corrosion resistance of four Al-Si hypereutectic alloys in a solution typical of condensate from automotive fuel combustion products, and referred to here as synthetic condensed automotive solution, has been studied. Three commercial alloys that are used for cylinder liners, and a laboratory made alloy, were studied by electrochemic
Materials Research. Publicado em: 2005-06
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15. FERRAMENTAS DE USINAGEM EM AÇO RÁPIDO AISI M2 OBTIDO POR CONFORMAÇÃO POR SPRAY. / MACHINING TOOLS IN AISI M2 HIGH-SPEED STEEL OBTAINED BY SPRAY FORMING PROCESS.
O objetivo do presente trabalho foi à obtenção de aço rápido tipo AISI M2 pela técnica da conformação por spray e a avaliação deste, quanto ao seu desempenho quando aplicado como ferramenta de usinagem. O material obtido foi laminado a quente com razões de redução de 50 e 72%, resultando em placas a partir das quais foram confeccionadas past
Publicado em: 2004
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16. Propriedades imunestimulatorias e antitumoral de concentrados proteicos de soro de leite bovino, de caseina e de um isolado proteico de soja. / Antitumoral and imunostimulating properties of bovine milk whey proteics concentrates, of casein and a soy protein isolated.
The objective of the present work was the investigation of immunomodulation and anticancer properties presented by bovine milk proteins with special attention to the whey proteins, in the form of whey protein concentrate (WPC). For such a task, adequate methodology was established for the production of concentrates of caseins and whey proteins, which permitt
Publicado em: 2004
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17. Production of microencapsulados of starch with recobrimento in bed fluidizado / Produção de microencapsulados de amido com recobrimento em leito fluidizado
Thin polymeric layers, when applied to microcapsules, can increase the degree of protection and control the release of the contents. Starch microcapsules containing gelatin as binding material, obtained by spray drying, were filled with commercial fish oil by adsorption, and subsequently encapsulated, aimed at forming a film either with gelatin or with a mix
Publicado em: 2000
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18. Morphology of Mycoplasma laidlawii Type A I. Comparison of Electron Microscopic Counts with Colony-Forming Units
Anderson, D. L. (University of Minnesota, Minneapolis), M. E. Pollock, and L. F. Brower. Morphology of Mycoplasma laidlawii type A. I. Comparison of electron microscopic counts with colony-forming units. J. Bacteriol. 90:1764–1767. 1965.—Cells of Mycoplasma laidlawii A grown in dialyzing flask cultures were counted with the electron microscope by use of
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19. Fabrication of Modified Transport Fluconazole Transdermal Spray Containing Ethyl Cellulose and Eudragit® RS100 as Film Formers
The present investigation was undertaken to fabricate modified transport fluconazole transdermal spray using ethyl cellulose and Eudragit® RS100 as film-forming polymers. Eudragit® RS100 (X1) and ethyl cellulose (X2) were selected as independent variables in 32 full factorial design, whereas drug transport in first hour (Y1) and the time required for 50% d
Springer US.
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20. Comparison of coliphage and bacterial aerosols at a wastewater spray irrigation site.
Microbiological aerosols were measured on a spray irrigation site at Fort Huachuca, Ariz. Indigenous bacteria and tracer bacteriophage were sampled from sprays of chlorinated and unchlorinated secondary-treatment wastewaters during day and night periods. Aerosol dispersal and downwind migration were determined. Bacterial and coliphage f2 aerosols were sample
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21. Prevention of surface-to-human transmission of rotaviruses by treatment with disinfectant spray.
A model was developed to examine the effects of disinfectants on the transmission of infectious rotavirus from a dried surface to humans. The initial experiments were designed to find a method of preserving rotavirus infectivity during drying. Culture-adapted human rotavirus (CJN strain) was dried at room temperature in different organic suspensions, includi
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22. Quantitative Assessment of Bactericidal Activities of β-Lactam Antibiotics by Agar Plate Method
Quantitative bactericidal activities of β-lactam antibiotics were determined by the agar plate method. Broth cultures, of which the colony-forming units were counted before the study, were inoculated on antibiotic-containing agar plates, utilizing a 10−3, 10−2, or 10−1 dilution or undiluted culture plated with each 0.001-ml calibrated loop. These plat
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23. Isolated liver gap junctions: gating of transjunctional currents is similar to that in intact pairs of rat hepatocytes.
We have shown previously that conductance of rat liver gap junctions is blocked by an affinity-purified polyclonal antibody generated against rat liver junctional membranes, is not affected by moderate transjunctional or transmembrane potentials, and is reversibly decreased by cytoplasmic acidification and perfusion with octanol. We have now recorded current
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24. Nasal absorption of insulin: enhancement by hydrophobic bile salts.
We demonstrate that therapeutically useful amounts of insulin are absorbed by the nasal mucosa of human beings when administered as a nasal spray with the common bile salts. By employing a series of bile salts with subtle differences in the number, position, and orientation of their nuclear hydroxyl functions and alterations in side chain conjugation, we sho