Velocimetry
Mostrando 1-12 de 83 artigos, teses e dissertações.
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1. Influência da ação combinada do transporte inercial e da sedimentação diferencial nos agregados após cessada a floculação mecanizada
RESUMO Durante a floculação mecanizada, o gradiente médio de velocidade (Gf) pode ser controlado de modo a formar agregados compatíveis com as unidades de separação sólido/líquido nas estações de tratamento de água, conferindo flexibilidade operacional ao sistema. Os ensaios de bancada auxiliam na definição da melhor condição de coagulação e
Engenharia Sanitaria e Ambiental. Publicado em: 2022
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2. PARTICLE IMAGE VELOCIMETRY FOR ESTIMATING THE YOUNG’S MODULUS OF WOOD SPECIMENS
ABSTRACT Proposing technological innovations in the investigation of the structure and behaviour of wood is important to optimize its use. The assimilation of methods diffused in other areas, such as particle image velocimetry (PIV), can allow a rich range of information for different aspects. The aim of this study was to estimate the Young’s modulus usin
CERNE. Publicado em: 09/09/2019
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3. DISPLACEMENT MEASUREMENT IN SAWN WOOD AND WOOD PANEL BEAMS USING PARTICLE IMAGE VELOCIMETRY
ABSTRACT Throughout their useful life structures demand monitoring to verify their conditions of use. Thus, the need arises to seek methodologies capable to evaluate displacements and deformations in structural components of buildings. The objective of this research was to evaluate the use of the particle image velocimetry (PIV) technique to analyze test spe
CERNE. Publicado em: 20/05/2019
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4. Wind Tunnel Investigation of the Wind Patterns in the Launching Pad Area of the Brazilian Alcântara Launch Center
ABSTRACT This paper presents a wind tunnel study of the flow patterns in the main Brazilian Space Port, the Alcântara Launch Center (ALC), located in the Northwest region, over an irregular coastal cliff of 40 m height. In the ALC region, constant winds of strong incidence are very common, which can change the characteristics of the atmospheric boundary lay
J. Aerosp. Technol. Manag.. Publicado em: 14/01/2019
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5. Proper Orthogonal Decomposition and Spectral Analysis of a Wall-Mounted Square Cylinder Wake
ABSTRACT: The flow patterns over a finite square cylinder of aspect ratio of 3 were analyzed experimentally in a subsonic wind tunnel using the time-resolved particle image velocimetry (TR - PIV) techniques. The near wake flow structures and vortex shedding characteristics were investigated using mean flow analysis, spectral analysis and proper orthogonal de
J. Aerosp. Technol. Manag.. Publicado em: 03/05/2018
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6. Doppler das artérias uterinas no rastreamento para pré-eclâmpsia e restrição do crescimento fetal
Resumo Objetivo Realizar revisão da literatura científica acerca do uso do Doppler das artérias uterinas, de forma isolada ou em combinação com outros marcadores, no rastreamento para pré-eclâmpsia (PE) e restrição do crescimento fetal (RCF) na população geral. A revisão incluiu estudos de coorte e ensaios clínicos randomizados recentemente pu
Rev. Bras. Ginecol. Obstet.. Publicado em: 2018-05
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7. ANALYSIS OF ELASTICITY IN WOODS SUBMITTED TO THE STATIC BENDING TEST USING THE PARTICLE IMAGE VELOCIMETRY (PIV) TECHNIQUE
ABSTRACT The most important parameter in terms of material mechanical behavior knowledge is the modulus of elasticity, being traditionally obtained through destructive tests. The objective of this study is the verification of the potential use of the particle image velocimetry technique (PIV) as a tool to obtain the modulus of elasticity in sawed wood sample
Eng. Agríc.. Publicado em: 2018-04
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8. Doppler velocimetry in fetal rats exposed to enoxaparin and unfractionated heparin (UFH) during pregnancy
Abstract Purpose: To evaluate the effects of enoxaparin and unfractionated heparin (UFH) administered in prophylactic and therapeutic doses on fetal vessels in healthy pregnant Wistar rats, according to Doppler velocimetry measurements. Methods: Fifty animals were assigned to one of five groups: controls (saline), prophylactic and therapeutic enoxaparin (1
Acta Cir. Bras.. Publicado em: 2017-05
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9. Uterine artery Doppler flow velocimetry parameters for predicting gestational trophoblastic neoplasia after complete hydatidiform mole, a prospective cohort study
OBJECTIVES: Doppler ultrasonography can be used to assess neoangiogenesis, a characteristic feature of postmolar gestational trophoblastic neoplasia. However, there is limited information on whether uterine artery Doppler flow velocimetry parameters can predict gestational trophoblastic neoplasia following a complete hydatidiform mole. The purpose of this s
Clinics. Publicado em: 2017-05
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10. 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
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11. Reduced placental volume and flow in severe growth restricted fetuses
OBJECTIVES: To evaluate placental volume and vascular indices in pregnancies with severe fetal growth restriction and determine their correlations to normal reference ranges and Doppler velocimetry results of uterine and umbilical arteries. METHODS: Twenty-seven fetuses with estimated weights below the 3rd percentile for gestational age were evaluated. Pla
Clinics. Publicado em: 2016-06
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12. Is Doppler ultrasound useful for evaluating gestational trophoblastic disease?
Doppler ultrasound is a non-invasive method for evaluating vascularization and is widely used in clinical practice. Gestational trophoblastic neoplasia includes a group of highly vascularized malignancies derived from placental cells. This review summarizes data found in the literature regarding the applications of Doppler ultrasound in managing patients wit
Clinics. Publicado em: 2015-12