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Assessment of hydrophobicity and roughness of stainless steel adhered by an isolate of Bacillus cereus from a dairy plant BJM
Bernardes,Patrícia Campos; Andrade,Nélio José de; Ferreira,Sukarno Olavo; Sá,João Paulo Natalino de; Araújo,Emiliane Andrade; Delatorre,Deyse Maria Zanom; Luiz,Lívia Maria Pinheiro.
The interaction between the surface of stainless steel and Bacillus cereus was studied in terms of the characteristics of interfacial interaction determined from the measurement of the contact angle of the surface of B. cereus and stainless steel in the presence or absence of B. cereus adherence. The microtopographies and the roughness of the surface of stainless steel and stainless steel adhered by B. cereus were evaluated with the help of atomic force microscopy and perfilometry. The strain of B. cereus studied was considered hydrophilic, whereas the stainless steel was considered hydrophobic. The adhesion was not thermodynamically favorable (ΔGadhesion > 0) between the stainless steel and the strain of B. cereus studied. Thus, the interaction between...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Hydrophobicity; Roughness; Bacillus cereus; Dairy plant; Adhesion.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822010000400017
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Efeito do tratamento com plasma frio na molhabilidade de madeiras tropicais brasileiras. Repositório Alice
CADEMARTORI, P. H. G.; NISGOSKI, S.; MUNIZ, G. I. B. de; MAGALHAES, W. L. E..
A inativação da superfície da madeira dificulta a interação do material com solventes de diferentes polaridades, prejudicando fenômenos de molhabilidade e adesão interfacial. O presente trabalho investigou o efeito de descargas de plasma frio na molhabilidade da superfície das madeiras de Dinizia excelsa e Lecythis pisonis. As descargas de plasma foram realizadas em atmosferas de Ar e N2 em diferentes condições de tratamento. As madeiras modificadas por plasma frio foram caracterizadas quanto a molhabilidade em água e glicerol, modificações topográficas por meio de rugosidade 3D e adesão revestimento-substrato por meio do ensaio de resistência à tração (método pull-off). Os principais resultados mostraram que um tratamento mínimo de 30 segundos em ambas as...
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Tecnologia de plasma; Energia de superfície; Ângulo de contato; Rugosidade; Adesão interfacial; Superfície da madeira; Molhabilidade; Plasma technology; Surface energy; Contact angle; Roughness; Interfacial adhesion; Wood surface.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1076041
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Effects of pressure ridge sheltering on the spatial and temporal variability of boundary layer stability under first year sea ice ArchiMer
Hudier, E; Ingram, G.
We present series of data describing the small-scale structure of the boundary layer stratification in the vicinity and away from a 1.5 m pressure ridge keel. We then analyze the influence of pressure ridges on the spatial and temporal variability of the ocean boundary layer Our experiment was done during the melt in order to use small-scale salinity gradients to study the variability in intensity of mixing processes. High-resolution salinity records sampled at 0+, 25 and 50 cm from the ice-water interface were analyzed at two stations, one at 5 m and the other at 75 m from a pressure ridge keel. We observed that, in the immediate vicinity of the ridge, melting is associated with the periodic development and dissipation of a melt layer in relation with the...
Tipo: Text Palavras-chave: Glace; Rugosité; Couche limite; Diffusion turbulente; Ice; Roughness; Boundary layer; Eddy diffusivity.
Ano: 1999 URL: http://archimer.ifremer.fr/doc/00325/43598/43981.pdf
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METHODOLOGY EVALUATION OF PIN MICRORELIEF METER REA
Melo,Mariana C.; Tavares,Laene F.; Oliveira,Thaísa F.; Silva,Rodrigo R.; Carvalho Filho,Alberto.
ABSTRACT: The effects of natural weathering and different managements performed in agriculture may best be understood by studying the soil roughness. The aim of this study was to evaluate the optimization of the use of pin microrelief meter, an instrument used to determine the soil surface roughness, as the number of readings collected over traditional methodology proposed in the bibliography. The study was conducted in Rio Paranaiba (MG), in a Haplustox soil. The experimental design was completely randomized in a 2×3 factorial design with four replications. There were combined two types of primary tillage: conventional tillage with disc plow (PCAD) and harrow (PCGA), and three amounts of readings (100, 200, and 300 reading points) sampled in each...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Mobilization; Pin microrelief meter; Roughness; Soil tillage.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000501056
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