Pore Continuity
Mostrando 1-12 de 14 artigos, teses e dissertações.
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1. Estructuras de titanio con gradiente de porosidad – fabricación por el método de partículas espaciadoras y caracterización
ABSTRACT It has proposed the use of porous titanium to reduce the problem of mechanical incompatibility, which occurs between such material used in implants and bone. The pores introduction in titanium decreases its elastic modulus by bringing it closer to that of both cortical and trabecular bones. This paper describes titanium fabrication by powder metallu
Matéria (Rio J.). Publicado em: 19/07/2018
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2. Temporal Variation of Soil Physical Quality under Conventional and No-Till Systems
ABSTRACT: Determination of soil physical quality (SPQ) is very important because it is related to many important soil processes. However, it is not clear which indicators should be considered in this evaluation, and information about temporal variation of SPQ under different soil tillage systems is scarce. The aim of this study was to determine the effects o
Rev. Bras. Ciênc. Solo. Publicado em: 16/04/2018
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3. Liquid Bovine Biofertilizer and Cultivation Effects on the Porosity of a Typic Haplocambids as a Function of Cultivation and Dose
ABSTRACT The soil porous space is where processes related to gases and soil solution occur, and provides an adequate guide for agricultural practices. This study aimed to evaluate the integrated effects of cultivation and the application of liquid bovine biofertilizer on the porous network of a Typic Haplocambids (Cambissolo Háplico Ta Eutrófico) cultivate
Rev. Bras. Ciênc. Solo. Publicado em: 28/07/2016
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4. Soil structure and greenhouse gas production differences between row and interrow positions under no-tillage
No-tillage in Brazil is an efficient agricultural system that improves crop productivity whilst controlling erosion caused to the soil by degradation. However, there is some concern regarding soil compaction. Our objective was to determine whether the function of soil structure in sustaining crop growth was dependent on row and interrow positions in long-ter
Sci. agric. (Piracicaba, Braz.). Publicado em: 2014-04
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5. Qualidade física de um Latossolo Vermelho sob plantio direto submetido à descompactação mecânica e biológica / Physical quality of non-tilled Oxisol subjected to mechanical and biological decompaction
O objetivo deste trabalho foi verificar os efeitos de práticas de descompactação em propriedades físicas de um Latossolo Vermelho distrófico, textura argilosa, após dezesseis anos em sistema plantio direto. Os tratamentos, aplicados em maio de 2009, consistiram de: plantio direto (PD), plantio direto com escarificação mecânica feita por subsolagem a
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/04/2012
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6. A stress-displacement solution for a pressure tunnel with impermeable liner in elastic porous media
Considering the effects of the changes of the pore water pressure around the opening, the construction sequence of the tunnel and the interaction between the liner and the surrounding geomaterial on the mechanical response of the tunnel and in conjunction with the analyses of the continuity and boundary conditions for the stress and displacement and hydrauli
Latin American Journal of Solids and Structures. Publicado em: 2012
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7. Escoamento de fluidos complexos e transporte de partÃculas em geometrias irregulares. / Complex fluid flows and particle transport in irregular geometries.
In this work many types of incompressible laminar Newtonian and Non-Newtonian flows are studied. The interplay of these flows with complex geometries was investigated using computational modeling and numerical solution of the conservation of momentum and mass continuity equations. As a first step, the computational modeling of a network of pores was adopted
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/04/2011
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8. PARÂMETROS FÍSICO-HÍDRICOS DE UM LATOSSOLO SOB DIFERENTES SISTEMAS DE MANEJO E NÍVEIS DE TRÁFEGO / PHYSICOHYDRICAL SOIL PARAMETERS OF AN OXISOL UNDER DIFFERENT SOIL MANAGEMENTS AND TRAFFIC LEVELS
Soil quality has been widely studied since the soil is recognized as a key resource in agricultural production. Thus, it is necessary to assess a range of indicators of soil quality, in order to monitor parameters that indicate quality or soil degradation in agricultural activities. The objective was to assess indicators of physical and hydrical soil quality
Publicado em: 2008
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9. Flickering fusion pores comparable with initial exocytotic pores occur in protein-free phospholipid bilayers
For the act of membrane fusion, there are two competing, mutually exclusive molecular models that differ in the structure of the initial pore, the pathway for ionic continuity between formerly separated volumes. Because biological “fusion pores” can be as small as ionic channels or gap junctions, one model posits a proteinaceous initial fusion pore. Beca
National Academy of Sciences.
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10. Metabolic Activity and Population Dynamics of Rhizobia Introduced into Unamended and Bentonite-Amended Loamy Sand
Respiration measurements showed that the cumulative amount of CO2 respired by rhizobia introduced into sterile bentonite-amended loamy sand was significantly higher than it was in unamended loamy sand. The maintenance respiration of rhizobial cells was not influenced by the presence of bentonite clay. Carbon was used more efficiently during growth in bentoni
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11. Ultrastructure of abnormal membrane inclusions in nuclei of human myocardial cells.
The ultrastructure of the nuclear envelope was studied in cardiac muscle cells of 12 patients undergoing cardiopulmonary bypass surgery. Two main types of membrane inclusions, globular and tubular, were observed in the nuclei. The globular type was found in 6 patients. The globular inclusions were about 0-5mu to 1-5mu in diameter and lined by two unit membra
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12. Effects of Membrane Potential and Sphingolipid Structures on Fusion of Semliki Forest Virus
Cells expressing the E1 and E2 envelope proteins of Semliki Forest virus (SFV) were fused to voltage-clamped planar lipid bilayer membranes at low pH. Formation and evolution of fusion pores were electrically monitored by capacitance measurements, and membrane continuity was tracked by video fluorescence microscopy by including rhodamine-phosphatidylethanola
American Society for Microbiology.