Characteristics Flows
Mostrando 1-12 de 125 artigos, teses e dissertações.
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1. NUMERICAL STUDY OF VISCOPLASTIC FLOW IN A T-BIFURCATION: IDENTIFICATION OF STAGNANT REGIONS
Abstract Identification of stagnant regions of viscoplastic fluid flows in production lines and equipment is of paramount importance owing to potential material degradation and process contamination. The present work introduces an assessment strategy to identify, classify and quantify unyielded regions with the objective of optimizing the flow conditions wit
Braz. J. Chem. Eng.. Publicado em: 09/12/2019
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2. Contribution of public squares to the reduction of urban flooding risk
Resumo A urbanização está diretamente ligada ao processo de impermeabilização do solo em áreas urbanas que acaba contribuindo no surgimento dos riscos de alagamentos. Desse modo, objetivou-se nessa pesquisa determinar as propriedades hidrodinâmicas das praças púbicas de uma cidade Brasileira e com isso determinar o quanto podem contribuir para a red
Rev. Ambient. Água. Publicado em: 25/11/2019
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3. Polyethersulfone Hollow Fiber Membranes Developed for Oily Emulsion Treatment
Polyethersulfone (PES) hollow fiber membranes were produced, containing 3% of two types of clay (Brasgel PA - MMT and Cloisite NA - CLNa), in order to modify the characteristics of the polyethersulfone membrane. By means of the X-ray diffraction, it was possible to observe an exfoliated and/or partially exfoliated structure in the membranes containing clay.
Mat. Res.. Publicado em: 05/09/2019
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4. Moisture in the soil profile with water applications using pulse drip irrigation
RESUMO O bulbo molhado, como resultado da aplicação pontual de água de irrigação, é o volume de solo que tem maior umidade em relação à umidade inicial. Devido ao incremento de umidade no solo, sucessivos eventos de irrigação tendem a formar bulbos molhados e área de acúmulo superficial de água (AASA) maiores. Portanto, objetivou-se avaliar a d
Rev. Ciênc. Agron.. Publicado em: 2019-06
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5. Registro de dados sobre acidentes de trabalho fatais em sistemas de informação no Brasil
Resumo O objetivo deste estudo é identificar sistemas de informação que dispõem de dados sobre acidentes de trabalho fatais (ATF) no Brasil, descrever suas características, fluxos e barreiras para a qualidade da informação. Empregando-se o método da pesquisa documental, foram encontrados: o Sistema de Informações sobre Mortalidade (SIM), o Sistema
Ciênc. saúde coletiva. Publicado em: 2019-03
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6. Hepatites B e C nas áreas de três Centros Regionais de Saúde do Estado do Pará, Brasil: uma análise espacial, epidemiológica e socioeconômica
Resumo Introdução As hepatites virais são graves problemas de saúde pública e estão relacionadas às diferentes características socioeconômicas do território brasileiro. Objetivo Analisar a distribuição espacial das hepatites B e C e sua relação com o Índice de Desenvolvimento Humano Municipal (IDHM) nas áreas de três Centros Regionais de
Cad. saúde colet.. Publicado em: 21/02/2019
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7. Evaluación del uso de acetileno como fuente de carbono en la carburización de aceros
ABSTRACT The effect of using acetylene as a carbon source in the gas carburization of AISI/SAE 8620 steel was evaluated in this work. For this purpose, a gaseous carburizing system was designed and manufactured with the following characteristics: controlled production of a carburant gaseous atmosphere, inert and hermetic isothermal reaction zone and carbon/o
Matéria (Rio J.). Publicado em: 19/07/2018
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8. Design and analysis of different models of microfluidic devices evaluated in Enhanced Oil Recovery (EOR) assays
ABSTRACT Microfluidic devices are a new platform for Enhanced Oil Recovery (EOR) assays. The application of Colloidad Dispersion Gels (CDG) injection method has been proposed in recent years. However, the mechanism of oil recovery enhancement has not been completely elucidated. Its purpose is to mobilize oil by decreasing the permeability of channeled zones.
Matéria (Rio J.). Publicado em: 19/07/2018
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9. Geochemistry of basaltic flows from a basalt ring structure of the Serra Geral formation at Água Vermelha dam, Triângulo Mineiro, Brazil: implications for the magmatic evolution of the Paraná-Etendeka Province
ABSTRACT: The Serra Geral Formation belongs to the Paraná-Etendeka Magmatic Province (PEMP) and its geochemical and petrographic characteristics are not homogeneous. Many studies segment this group into six basaltic and two rhyolitic magma-types. It is believed that its extrusion occurred through crustal fissures in the Cretaceous, but some authors describe
Braz. J. Geol.. Publicado em: 2018-06
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10. Geochemistry of the Northern Paraná Continental Flood Basalt (PCFB) Province: implications for regional chemostratigraphy
ABSTRACT: The Paraná Continental Flood Basalt (PCFB) province is one of the largest igneous provinces on Earth, but little is known about the architecture and geochemical characteristics of the lava flows. In this context, a set of borehole samples arranged in an NEE-SWW profile - more than 600 km long - located in the northern PCFB was used to define its c
Braz. J. Geol.. Publicado em: 2018-06
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11. Geology, geochemistry and petrology of basalts from Paraná Continental Magmatic Province in the Araguari, Uberlândia, Uberaba and Sacramento regions, Minas Gerais state, Brazil
Abstract: This study covers the region between the cities of Sacramento and Araguari/Uberlândia (Minas Gerais State, Brazil), where basalt flows from the Paraná Continental Magmatic Province outcrop. The investigated rocks present tholeiitic signature, with high titanium content, and are classified as Pitanga magma-type. The preserved basalt thickness is b
Braz. J. Geol.. Publicado em: 22/02/2018
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12. Experimental Investigation on Limit Cycle Wing Rock Effect on Wing Body Configuration Induced by Forebody Vortices
ABSTRACT The purpose of this paper is to present the aerodynamic and flow characteristics of a slender body with a 30° swept wing configuration undergoing a limit cycle oscillation using a synchronous measurement and control technique of wing rock/particle image velocimetry/dynamic pressure associated with the time history of the wing rock motion. The exper
J. Aerosp. Technol. Manag.. Publicado em: 2016-09