Subsurface Investigation
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. Characterization of Sobradinho landslide in fluvial valley using MASW and ERT methods
Abstract Landslides can substantially impact the fluvial systems, which is why the continuous mapping of their extent, evolution and stability assessment is crucial. However, in such environments, material identification (e.g. colluvium) and subsurface characterization by the methods used for geologic mapping and geotechnical investigation is often a challen
REM, Int. Eng. J.. Publicado em: 2020-12
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2. USE OF GROUND PENETRATING RADAR TO STUDY SPATIAL VARIABILITY AND SOIL STRATIGRAPHY
ABSTRACT Ground Penetrating Radar (GPR) is a geophysical method that uses electromagnetic waves to study subsurface structure in different fields such as geology, agriculture and civil engineering. The wave penetration in the soil is strongly controlled by the electrical conductivity of soil components such as clay, organic matter, and water. In this study,
Eng. Agríc.. Publicado em: 19/06/2019
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3. Desenvolvimento de um sistema para realização de ensaios sísmicos down-hole em conjunto com o CPT / Seismic testing down-hole in conjunction with CPT
Quando ocorrem solicitações dinâmicas nos solos, torna-se indispensável a determinação do módulo de cisalhamento máximo (Go) para elaboração de projetos de Engenharia Geotécnica. Este parâmetro pode ser determinado a partir da velocidade de propagação das ondas S (Vs). Em campo, os ensaios mais empregadas para determinação de Vs são o cross-
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/02/2011
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4. Investigation of the theory of coupling compositis in thermal waves fields / Investigação da teoria de acoplamentos de compósitos em campos de ondas térmicas
In this work we elaborate an analytical solution of the temperature field of an opaque material containing two overlapping and parallel subsurface cylinders, illuminated by a modulated light beam. The method is based on the expansion of plane and cylindrical thermal waves, in series of Bessel and Hankel functions. Firstly, the work shows the model of propaga
Publicado em: 2009
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5. Estudo geolÃgico-geotÃcnico de uma encosta com problemas de instabilidade no MunicÃpio de Camaragibe - PE
The current work presents a study regarding the existing instability in the slope localized in the ascent of the Vale das Pedreiras, in the municipality of Camaragibe â PE. The principal objective of the research was to identify the causes and to undestand the mechanisms involved in the problem jointly with the realization of an analysis of the stability of
Publicado em: 2007
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6. THE USE OF GROUND PENETRATING RADAR (GPR) IN ENVIRONMENTAL SITE INVESTIGATION / USO DO GEORADAR (GPR) EM INVESTIGAÇÕES AMBIENTAIS
The present work aims to assess the adequacy of the ground penetrating radar as a screening tool in site in site investigation practice in hydrogeological, geotechnical and environmental studies. An extensive site investigation program was carrid out in Southeast Brazil looking for characterizing the subsurface. Tests were performed to determine the statigra
Publicado em: 2005
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7. Molecular Evidence for the Evolution of Metal Homeostasis Genes by Lateral Gene Transfer in Bacteria from the Deep Terrestrial Subsurface
Lateral gene transfer (LGT) plays a vital role in increasing the genetic diversity of microorganisms and promoting the spread of fitness-enhancing phenotypes throughout microbial communities. To date, LGT has been investigated in surface soils, natural waters, and biofilm communities but not in the deep terrestrial subsurface. Here we used a combination of m
American Society for Microbiology.
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8. In vitro activity of vancomycin against the spirochete Borrelia burgdorferi.
Borrelia burgdorferi, a spirochete and the causative agent of Lyme disease, has been reported to be susceptible to a variety of antimicrobial agents. In this investigation, the action of vancomycin, a glycopeptide antibiotic not previously known to have activity against spirochetes, against borrelias was examined. The in vitro activity of vancomycin against
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9. Membrane Topology and Cellular Location of the Treponema pallidum Glycerophosphodiester Phosphodiesterase (GlpQ) Ortholog
Recent reports that isolated Treponema pallidum outer membranes contain an ortholog for glycerophosphodiester phosphodiesterase (GlpQ) (D. V. Shevchenko, D. R. Akins, E. J. Robinson, M. Li, O. V. Shevchenko, and J. D. Radolf, Infect. Immun. 65:4179–4189, 1997) and that this protein is a potential opsonic target for T. pallidum (C. E. Stebeck, J. M. Shaffer
American Society for Microbiology.
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10. Mechanisms involved in protection provided by immunization against core lipopolysaccharides of Escherichia coli J5 from lethal Haemophilus pleuropneumoniae infections in swine.
In an investigation of the potential protective effects of immunity against common lipopolysaccharide core antigens of gram-negative bacteria during a severe gram-negative infection in the natural host, we induced Haemophilus pleuropneumoniae infections in weanling pigs immunized with a vaccine of an Rc mutant of Escherichia coli (strain J5). To help define