Flows
Mostrando 1-12 de 1247 artigos, teses e dissertações.
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1. Influence of Refinery Asphalt Residue Addition on Flow: A Study Using Waxy Model-System
One of the main phenomena causing problems in the oil industry is the precipitation of waxes, which can crystallize and form deposits, clogging lines and reducing flows. Many studies have been conducted seeking to overcome this problem, mainly through application of chemical to increase flow. Some studies have shown that the asphaltenes present in crude oil
Journal of the Brazilian Chemical Society. Publicado em: 2023
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2. Left Ventricular Assist Device Thrombosis: Combined Approach by Echocardiography and Logfiles Review for Diagnosis and Management
ABSTRACT Introduction: Left ventricular assist devices are an established therapy for end-stage heart failure. Follow-up of these patients showed complications, such as thrombosis. Our objective was to evaluate the contribution of echocardiography — in association with HeartWare HVAD online logfiles reviews and lactate dehydrogenase titration — for diag
Brazilian Journal of Cardiovascular Surgery. Publicado em: 2022
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3. Regional Frequency Analysis for the Prediction of Maximum Flows in Ungauged Basins of the Peruvian Amazon
Resumo A estimativa da vazão máxima de projeto e importante para o gerenciamento de inundações. No entanto, a existência limitada de sítios calibrados e a escassez de medições hidrológicas impossibilitam sua estimativa em bacias não calibradas. Neste estudo, a análise de frequência regional (RFA) foi realizada para a previsão de vazões máximas
Revista Brasileira de Meteorologia. Publicado em: 2022
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4. REHYDRATION KINETICS OF DEHYDRATED BERRIES
ABSTRACT Cranberries and blueberries are small fruits known for their antioxidant properties. However, due to their high water content and short shelf life, they are generally marketed as dehydrated berries. The present work aimed to model the rehydration of dehydrated berries. Rehydration tests were conducted at 7 and 29°C using milk as a solvent and at 7,
Eng. Agríc.. Publicado em: 2021-05
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5. Alternative Approaches Applied to Inductively Coupled Plasma Techniques: Multi-Flow and Two-Flow Calibration
Multi-flow calibration (MFC) is based on monitoring the analytical signal from a single calibration standard solution at several different nebulization gas flow rates (Q), which normalizes plasma conditions and minimizes matrix effects. In the present study, MFC was evaluated, for the first time, applied to inductively coupled plasma optical emission spectro
J. Braz. Chem. Soc.. Publicado em: 2021-04
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6. Flows in a Female Penitentiary: Manoeuvring between Absence and Presence of Family Members
RESUMO Em Fluxos em cadeias femininas: Manobras entre as ausências e presenças dos familiares, objetivamos compreender os fluxos existentes entre as mulheres presas e seus familiares por meio de pesquisa (quantitativa e qualitativa) realizada em uma penitenciária feminina de Belo Horizonte. A literatura desse campo aponta para uma alta porosidade entre a
Dilemas, Rev. Estud. Conflito Controle Soc.. Publicado em: 2021-01
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7. PERFORMANCE OF AIR INDUCTION SPRAY NOZZLE MODELS UNDER DIFFERENT OPERATING CONDITIONS
ABSTRACT For the successful application of phytosanitary products, it is essential to understand the spraying process well. The present work aims to evaluate the spectrum and speed of the droplets produced by different spray nozzle models with air induction, working under different operating conditions. The experiment was conducted using an entirely randomiz
Eng. Agríc.. Publicado em: 2020-12
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8. Financial constraints and the interdependence of corporate financial decisions
Abstract Purpose This paper aims to examine the interdependence of financial decisions (investment, financing, dividends and cash-holding) under financial constraints. Design/methodology/approach The authors specify and estimate a system of simultaneous equations with panel data and firm fixed effects by three-stage least squares in a sample of firms from
RAUSP Manag. J.. Publicado em: 2020-09
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9. Numerical Simulation of Two-Phase Flows in Heterogeneous Porous Media
RESUMO Neste trabalho apresentamos simulações numéricas tridimensionais do escoamento bifásico (água-óleo) em meios porosos com o objetivo de analisar a influência das heterogeneidades nos campos de porosidade e permeabilidade e, principalmente, suas relações, sobre o fenômeno conhecido na literatura como dedos viscosos (viscous fingering). Para is
TEMA (São Carlos). Publicado em: 2020-08
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10. PHYSICAL ANALYSIS OF REGIONALIZED FLOW AS AN AID IN THE IDENTIFICATION OF HYDROLOGICALLY HOMOGENEOUS REGIONS
ABSTRACT Regionalization is an important technique for estimating the flow of hydrographic sections with a lack of data. First, it is necessary to identify hydrologically homogeneous regions (HHRs), which are commonly validated via statistical analyses. Because this step is understood to be subjective, studies that contribute to a greater reliability in iden
Eng. Agríc.. Publicado em: 2020-06
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11. Effect of Papaverine on Left Internal Mammary Artery Flow: Topical Spraying versus Perivascular Injection Method
Abstract Objective: To analyze two techniques of papaverine application, topical spray on the harvested left internal mammary artery (LIMA) and perivascular injection, to find out their ability to improve LIMA flow. Methods: Forty patients were randomized into two groups. In Group 1, papaverine was sprayed on the harvested pedunculated LIMA. In Group 2, pa
Braz. J. Cardiovasc. Surg.. Publicado em: 2020-04
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12. Tacit knowledge in unstructured decision process
Abstract Purpose This paper aims to identify the expressions and flows of tacit knowledge in the unstructured decision process. In this type of process, decision-makers use not only the explicit knowledge but also aspects such as intuition, experience and other forms of tacit knowledge. The research developed a qualitative approach, through a study of multi
RAUSP Manag. J.. Publicado em: 2020-03