Penetration Limits
Mostrando 1-12 de 18 artigos, teses e dissertações.
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1. SOIL PHYSICAL ATTRIBUTES BEFORE AND AFTER MANAGEMENT UNDER SOWING FORWARD SPEED
ABSTRACT The soil management system affects physical attributes, and the forward sowing speed can increase or decrease its results. Thus, this work aimed to evaluate management systems before and after soil mobilisation and forward sowing speed on soil physical attributes. Thus, an experiment was conduct in a completely randomized block design with four repl
Eng. Agríc.. Publicado em: 04/11/2019
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2. Soil Compaction Due to Wood Harvesting Traffic at Different Extraction Distances
ABSTRACT This study evaluated the effect on Oxisol soil compaction of traffic by wood harvesting machines from different extraction distances carried out by a logging company located in Paraná State. The harvesting system was composed of a feller buncher, skidder and harvester, in which soil compaction was evaluated at four extraction distances and four dep
Floresta Ambient.. Publicado em: 08/02/2018
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3. Least limiting water range for oil palm production in Amazon region, Brazil
ABSTRACT In areas cultivated with oil palm, typically mechanized field operations using heavy vehicles may negatively affect soil physical properties and productivity. The aim of this study was to evaluate soil physical quality in an area cultivated with oil palm by monitoring the temporal variation of the soil water content and relating it to the critical l
Sci. agric. (Piracicaba, Braz.). Publicado em: 2017-04
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4. Root Distribution of Peach Rootstocks Affected by Soil Compaction and Acidity
ABSTRACT Root growth can be limited by physical and chemical conditions of the soil. Compacted and acidic soils, where there is an occurrence of exchangeable Al, constitute barriers to use of the soil by plant roots. The hypothesis of this study was that physical and chemical properties of the inter-row soil of a peach orchard influence the root distribution
Rev. Bras. Ciênc. Solo. Publicado em: 25/07/2016
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5. Estudo da influência dos parâmetros no processo de soldagem GMAW - arco pulsado
Pulsed gas metal arc welding describes the metal transfer mode involving oscillation (pulsing) of the welding current from a high pulse current in which level drop growth, necking of wire tip and detachment occur, and a low background current, which is applied to maintain the arc. The advantages of the process are: metal transfer without spatter formation an
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/09/2011
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6. Innovation in X-Ray technology
In the Non-Destructive Testing (NDT) industry, the mayor trends are from film and stand alone applications to digital and inline inspection. Furthermore the quality requirements are growing driven by pushing design and material limits. Especially for field applications based on security reasons as well as image quality, replacement of isotopes can be monitor
Matéria (Rio de Janeiro). Publicado em: 2011
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7. 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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8. A conquista e a ocupação da Amazônia brasileira no período colonial: a definição das fronteiras / The conquest and settling of the Brazilian Amazon region during the colonization period: the definition of the borders
The conquest and settling of the Amazon region during the colonization period were state-conducted enterprises, planned and executed with political priority by the metropolitan government, which resulted in the incorporation to the Brazilian territory of approximately 60% of its total present area. It was Portugals duty, still under the Iberic Union, under t
Publicado em: 2006
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9. IMPLEMENTATION OF THE GEOTECHNIC ENGINEERING EXPERIMENTAL FIELD OF UFSM / IMPLANTAÇÃO DO CAMPO EXPERIMENTAL DE ENGENHARIA GEOTÉCNICA DA UFSM
Presently, on the Geotechnic Engineering art, the superficial and deep foundation projects are conditioned for the load capacity and for the admissibles settlements. The foundation projects and geotechnic sites in Santa Maria/RS have a preponderant empirical character. The soil knowledge are based, almost exclusively, on their behavior on previous sites and
Publicado em: 2004
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10. Estudo de fatores influentes na dureza superficial de um composito fotoativado
Adequate resin composite polymerization is a crucial factor in obtaining optimal physical performance of these materials. Several variables can affect the amount of light energy received at the top and bottom surfaces of a resin composite increment, such as, distance of the light guide tip from the resin composite, power density, light energy mode, exposure
Publicado em: 2004
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11. Geotechnical characterization based on geostatistics of a northeastern area on Fortaleza county, northeastern Brazil / Caracterização geotécnica do subsolo da porção nordeste do município de Fortaleza (CE) com base em geoestatística
O presente trabalho resulta da aplicação de técnicas geoestatística de análise da variabilidade espacial e de estimativas de dados de sondagem de simples reconhecimento com standard penetration test (SPT) objetivando a caracterização geotécnica de uma área com 44 KM POT.2 , situada na porção nordeste do município de Fortaleza (CE). A caracteriza�
Publicado em: 2003
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12. Fatores que influenciam na produtividade dos oceanos: a importÃncia do fluxo de difusÃo dos nutrientes para a biomassa do fitoplÃncton na regiÃo oceÃnica do nordeste brasileiro
In the tropical oceanic region the phytoplankton primary biomass is controlled by light availability and inorganic dissolved nutrients, besides other physical factors as turbulence and sedimentation. The water properties in the photic zone are subjected by a number of different forcing intensities opposite to the deeper waters which varies regularly. In Nort
Publicado em: 2003