Soil Structure
Mostrando 25-36 de 573 artigos, teses e dissertações.
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25. Assessing Water Erosion Processes in Degraded Area Using Unmanned Aerial Vehicle Imagery
ABSTRACT The use of Unmanned Aerial Vehicles (UAVs) and Structure from Motion (SfM) techniques can contribute to increase the accessibility, accuracy, and resolution of Digital Elevation Models (DEMs) used for soil erosion monitoring. This study aimed to evaluate the use of four DEMs obtained over a year to monitor erosion processes in an erosion-degraded ar
Rev. Bras. Ciênc. Solo. Publicado em: 14/10/2019
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26. Multivariate analysis in the evaluation of soil attributes in areas under different uses in the region of Humaitá, AM
Resumo O reconhecimento da influência das práticas de manejo nas condições físicas e químicas do solo é substancial para a agricultura sustentável. Por essa razão, o estudo foi desenvolvido com o objetivo de avaliar o comportamento de atributos do solo sob diferentes usos na região de Humaitá, AM, utilizando métodos estatísticos multivariados. O
Rev. Ambient. Água. Publicado em: 03/10/2019
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27. Fitossociologia dos componentes lenhoso e herbáceo em uma área de caatinga no Cariri Paraibano, PB, Brasil
RESUMO Caatinga sensu stricto é a vegetação típica do semiárido brasileiro, adaptada à forte sazonalidade das chuvas e às altas temperaturas. Possui alta riqueza de espécies e alto nível de diversidade beta. O objetivo do estudo foi documentar a flora e fitossociologia das plantas lenhosas e herbáceas de uma área de caatinga. Para isso, amostramos
Hoehnea. Publicado em: 30/09/2019
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28. Heterogeneidade ambiental e estrutura da vegetação arbustivo-arbórea em três áreas de Cerrado sentido restrito no Sudoeste goiano
Resumo A variação fitofisionômica do Cerrado brasileiro é intensa e estudos fitossociológicos podem fornecer subsídios sobre quais fatores são responsáveis por essa heterogeneidade ambiental. Nesse sentido, esse estudo teve o objetivo de avaliar a estrutura da vegetação lenhosa de três áreas de cerrado sentido restrito, no município de Jataí -
Ciênc. Florest.. Publicado em: 30/09/2019
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29. The Structure-Soil-Structure Interaction Effects on the Response of the Neighbouring Frame Structures
Abstract The Structure-Soil-Structure Interaction (SSSI) phenomenon between the neighbouring structures has been interested lesser than Soil-Structure Interaction. However, in urban environments, the structures have to be constructed in the neighbourhood, and it is inevitable that these structures affect each other’s responses. This study examines the Stru
Lat. Am. j. solids struct.. Publicado em: 12/09/2019
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30. Effects of soil-structure interaction in seismic analysis of buildings with multiple pressurized tuned liquid column dampers
Abstract In this paper soil-structure interaction (SSI) effects are investigated while an array of Pressurized Tuned Liquid Column Dampers (PTLCD) is employed for seismic vibration control of buildings. This device represents the most general case of a passive damper, with different reduction options to other control devices obtained by simplifying the invol
Lat. Am. j. solids struct.. Publicado em: 12/09/2019
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31. CHANGES IN THE SOIL STRUCTURE AND ORGANIC MATTER DYNAMICS UNDER DIFFERENT PLANT COVERS
ABSTRACT The soil properties reported in areas with different management provide useful information about the systems’ operation, state of conservation and resilience. In this way, this study evaluated physical properties and organic matter dynamics of soil under different plant covers in seven areas consisting of: five areas under ecological restoration (
CERNE. Publicado em: 09/09/2019
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32. Comparative Morphological, Anatomical and Ecological Studies on Two Varieties of Iris unguicularis subsp. carica (Iridaceae) in Turkey
RESUMO: Íris é o maior gênero da família Iridaceae com 50 espécies, sendo 24 endêmicas da Turquia. Neste estudo, comparamos caracteres morfológicos, anatômicos e ecológicos de duas variedades de Iris unguicularis subsp. carica (Iris unguicularis subsp. carica var. carica e Iris unguicularis subsp. carica var. syriaca) da Turquia. Relatamos algumas c
Planta daninha. Publicado em: 09/09/2019
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33. Restoring Ecological Functions Using Agroforestry Systems in Riparian Forests
ABSTRACT Agroforestry systems and restoration models were compared with native forests by examining the restoration of ecological processes that generate stability, resilience and reliability. The stability assessment was obtained using indicators of diversity, structure and functionality. Indicators of soil protection and nutrient cycling were also used to
Floresta Ambient.. Publicado em: 05/09/2019
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34. Dynamic Response Analysis of Geogrid Reinforced Embankment Supported by CFG Pile Structure During a High-Speed Train Operation
Abstract The performance of railroad structure has a tremendous influence on the safety and stable operation of high-speed trains. Strong vibrations and the degradation rate of the track are the main factors affecting the transport safety of a railroad built over a weak soil. Geogrid reinforced embankment supported by pile structure is a new efficient constr
Lat. Am. j. solids struct.. Publicado em: 15/08/2019
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35. PEDOFUNCTIONS APPLIED TO THE LEAST LIMITING WATER RANGE TO ESTIMATE SOIL WATER CONTENT AT SPECIFIC POTENTIALS
ABSTRACT The least limiting water range (LLWR) is a soil physical quality indicator that receives much attention. It has been criticized and put to the test regarding mathematical models that compose it since they describe the behavior of soil physical attributes in a simplified way. This study aimed to assess the efficiency of some pedofunctions proposed in
Eng. Agríc.. Publicado em: 12/08/2019
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36. Environmental structure affects taxonomic diversity but not functional structure of understory birds in the southwestern Brazilian Amazon
RESUMO Mudanças nas características ambientais podem influenciar o uso do habitat por aves, afetando o número de indivíduos, a riqueza de espécies e alterando a composição de espécies e estrutura funcional das assembleias. Medidas que avaliam a estrutura funcional de assembléias biológicas constituem uma ferramenta complementar à abordagem taxonô
Acta Amaz.. Publicado em: 12/08/2019