Results 11 to 20 of about 125,116 (267)

An approximation of behind-casing hydraulic conductivity between layers from transient pressure analysis

open access: yesDyna, 2019
Flow behind the casing has normally been identified and quantified using production logging tools. Very few applications of pressure transient analysis, which is much cheaper, have been devoted to determining compromised cemented zones.
Freddy Humberto Escobar   +2 more
doaj   +1 more source

Dissolution Hotspots in Fractures

open access: yesGeophysical Research Letters, 2021
The injection of reactive fluid into fractured reservoirs is relevant to many subsurface processes. During injection, fracture dissolution forms various patterns.
Ran Hu   +5 more
doaj   +1 more source

Radial Motions and Radial Gas Flows in Local Spiral Galaxies [PDF]

open access: yesThe Astrophysical Journal, 2021
Abstract We determine radial velocities and mass flow rates in a sample of 54 local spiral galaxies by modeling high-resolution and high-sensitivity data of the atomic hydrogen emission line. We found that, although radial inflow motions seem to be slightly preferred over outflow motions, their magnitude is generally small. Most galaxies
Enrico M. Di Teodoro, J. E. G. Peek
openaire   +3 more sources

Flow Configurations of Membraneless Microfluidic Fuel Cells: A Review

open access: yesEnergies, 2021
Membraneless microfluidic fuel cells (MMFCs) are being studied extensively as an alternative to batteries and conventional membrane fuel cells because of their simple functioning and lower manufacturing cost.
Muhammad Tanveer, Kwang-Yong Kim
doaj   +1 more source

Evidence for flow-parsing in radial flow displays

open access: yesVision Research, 2008
Retinal motion of objects is not in itself enough to signal whether or how objects are moving in the world; the same pattern of retinal motion can result from movement of the object, the observer or both. Estimation of scene-relative movement of an object is vital for successful completion of many simple everyday tasks.
Warren, Paul A., Rushton, Simon K.
openaire   +2 more sources

Numerical and Experimental Investigation on Unsteady Flow and Hydraulic Radial Force of Low-Head Axial Flow Turbine [PDF]

open access: yesJournal of Applied Fluid Mechanics, 2023
Radial force in low-head axial flow turbines (AFTs) is an influential factor in their operational stability. To explore the transient operating behavior of the radial force in low-head AFTs under different blade numbers, transient numeric computations ...
Y. Sunsheng   +5 more
doaj   +1 more source

Scaling Properties of Spectra in New Exact Solutions of Rotating, Multi-Component Fireball Hydrodynamics

open access: yesUniverse, 2018
We describe fireballs that rehadronize from a perfect fluid of quark matter, characterized by the lattice QCD equation of state, to a chemically frozen, multi-component mixture, that contains various kinds of observable hadrons.
Tamás Csörgő, Gábor Kasza
doaj   +1 more source

The Fluid Flow between Differentially Rotating Non-Concentric Spheres [PDF]

open access: yesУчёные записки Казанского университета: Серия Физико-математические науки, 2016
The motion of a viscous incompressible fluid between two non-concentric spheres, which rotate with different angular velocities, is considered. The axes of rotation of spherical surfaces are parallel and spaced apart by a small distance.
V.V. Novikov, L.N. Fevralskikh
doaj  

Structural biology of ferritin nanocages

open access: yesFEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Description of steady inflow of fluid to wells with different configurations and various partial drilling-in

open access: yesЗаписки Горного института, 2020
There are many equations of steady inflow of fluid to the wells depending on the type of well, presence or absence of artificial or natural fractures passing through the well, different degrees of drilling-in of the wellbores.
Valery A. Iktissanov
doaj   +1 more source

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