Results 21 to 30 of about 404,835 (268)

Void Fraction Measurement of Oil–Gas–Water Three-Phase Flow Using Mutually Perpendicular Ultrasonic Sensor

open access: yesSensors, 2020
The complex flow structure and interfacial effect in oil−gas−water three-phase flow have made the void fraction measurement a challenging problem.
Weikai Ren, An Zhao, Ningde Jin
doaj   +1 more source

Modelling of stratified gas–liquid two-phase flow in horizontal circular pipes [PDF]

open access: yes, 2007
Este artigo relata investigação numérica e experimental do escoamento bifásico gás-líquido estratificados em tubos circulares horizontais. A média de Reynolds equações de Navier-Stokes (RANS) com o modelo de turbulência k-ω para um fluxo de duas fases ...
FACCINI, José Luiz Horacio   +3 more
core   +1 more source

Prediction of pressure drop in multiphase horizontal pipe flow [PDF]

open access: yes, 2006
Empirical correlations were tested against reliable two phase pipe flow data for the prediction of pressure drop. Correlations are recommended for the prediction with stratified and annular type flows.
Spedding, P. L.   +2 more
core   +1 more source

Application of Imaging Algorithms for Gas–Water Two-Phase Array Fiber Holdup Meters in Horizontal Wells

open access: yesSensors
The flow dynamics of low-yield horizontal wells demonstrate considerable complexity and unpredictability, chiefly attributable to the structural attributes of the wellbore and the interplay of gas–water two-phase flow.
Ao Li   +8 more
doaj   +1 more source

A study of gas lift on oil/water flow in vertical risers [PDF]

open access: yes, 2014
Gas lift is a means of enhancing oil recovery from hydrocarbon reservoirs. Gas injected at the production riser base reduces the gravity component of the pressure drop and thereby, increases the supply of oil from the reservoir. Also, gas injection at
Brini Ahmed, Salem Kalifa
core  

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

open access: yesMolecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

Study on the mechanism of gas-water two-phase flow in carbonate reservoirs at pore scale

open access: yesPetroleum
Carbonate gas reservoirs generally contain water, leading to uneven water invasion, explosive water flooding and other prominent phenomena, which is an important factor restricting the efficient development of gas reservoirs.
Ruihan Zhang   +6 more
doaj   +1 more source

A Practical Model for Gas–Water Two-Phase Flow and Fracture Parameter Estimation in Shale

open access: yesEnergies, 2023
The gas flow in shale reservoirs is controlled by gas desorption diffusion and multiple flow mechanisms in the shale matrix. The treatment of hydraulic fracturing injects a large amount of fracturing fluids into shale reservoirs, and the fracturing ...
Pin Jia   +3 more
doaj   +1 more source

Loss of proton‐sensing TDAG8 increases tumor progression in mouse models of colon cancer

open access: yesMolecular Oncology, EarlyView.
Loss of the pH‐sensing receptor TDAG8 accelerates colorectal cancer progression in mice. Animals lacking TDAG8 expression had increased tumor growth, DNA damage, and recruitment of tumor‐associated immune cells, including macrophages, neutrophils, and monocytes.
Ermanno Malagola   +11 more
wiley   +1 more source

Water/Methane Two‐Phase Flow in the SiO2 Nanoslit Can Be Well Described via the Deformed Water Layer Model: A Molecular Simulation Study

open access: yesGeophysical Research Letters
The intricate flow processes in nano‐pores pose limitations on the extraction of resources such as shale gas and gas hydrates. To observe water/gas two‐phase flow in nano‐pores, we employed molecular dynamics simulations on water/methane two‐phase flow ...
Chao Zheng   +6 more
doaj   +1 more source

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