Results 91 to 100 of about 256,695 (353)

Richardson's pair diffusion and the stagnation point structure of turbulence [PDF]

open access: yes, 2002
DNS and laboratory experiments show that the spatial distribution of straining stagnation points in homogeneous isotropic 3D turbulence has a fractal structure with dimension D_s = 2.
A. Obukhov   +15 more
core   +2 more sources

Transformation of a Silicate Material for Carbon Negative Magnesia‐Based Cement via Electrochemistry

open access: yesAdvanced Science, EarlyView.
The transformation of a magnesium trisilicate material via water electrolysis into precursor phases necessary for magnesium‐based M‐S‐H cement is explored. The dissolution of the material mediated electrochemically is monitored, and the analysis of the resulting phases indicate their suitability as effective precursors for M‐S‐H cement.
Anthony R. Ramuglia   +11 more
wiley   +1 more source

Experimental Data on Stagnation-Point Gas Injection Cooling on a Hemisphere-Cone in a Hypersonic Arc Tunnel [PDF]

open access: yes
Exploratory tests were made to determine the reduction of heat transfer resulting from ejection of gases at the stagnation point on a hemisphere-cone at a nominal Mach number of about 9 and at stagnation enthalpies up to 1600 BTU per pound.
Grimaud, John E., McRee, Leonard C.
core   +1 more source

Therapeutic Repair of Sperm Quality Decline Caused by Polytetrafluoroethylene

open access: yesAdvanced Science, EarlyView.
Exposure to PTFE (teflon), a commonly used microplastic in non‐stick cookware, significantly reduces sperm quality in both humans and mice. Specifically, PTFE induces the disruption of sperm cytoskeleton and F‐actin assembly through targeting SKAP2 in haploid spermatid.
Shiming Gan   +15 more
wiley   +1 more source

Long time Evolution of Quantum Averages Near Stationary Points

open access: yes, 2003
We construct explicit expressions for quantum averages in coherent states for a Hamiltonian of degree 4 with a hyperbolic stagnation point. These expressions are valid for all times and "collapse" (i.e., become infinite) along a discrete sequence of ...
Berezin   +12 more
core   +1 more source

A computer-controlled four-roll mill for investigations of particle and drop dynamics in two-dimensional linear shear flows [PDF]

open access: yes, 1986
In this paper we describe the design and operating characteristics of a computer-controlled four-roll mill for investigations of particle and drop dynamics in two-dimensional linear flows.
Bentley, B. J., Leal, L. G.
core   +1 more source

Convective layered flows of a vertically whirling viscous incompressible fluid. Velocity field investigation

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2019
This article discusses the solvability of an overdetermined system of heat convection equations in the Boussinesq approximation. The Oberbeck-Boussinesq system of equations, supplemented by an incompressibility equation, is overdetermined.
Natal'ya Vladimirovna Burmasheva   +1 more
doaj   +1 more source

Stirring Without Stirrers: Polymer Fouling‐Driven Mass Transport Unlocks Order‐of‐Magnitude Gain in Electrochemiluminescence

open access: yesAdvanced Science, EarlyView.
Strategic electrode fouling enhances mass transport, primarily through electrochemically actuated lateral density gradients. Engineered fouling induces flow velocities up to 0.4 cm s⁻¹ in otherwise quiescent systems. Sub‐millimeter plastic features boost local rates by up to 290%, while micrometer‐scale arrays yield a 30% net electrolysis gain ...
Wathsala Prasadini Kapuralage   +6 more
wiley   +1 more source

Stagnation-point flow towards a vertical plate embedded in a porous medium [PDF]

open access: yes, 2012
The steady stagnation-point flow towards a heated vertical surface embedded in a porous medium is investigated. The governing partial differential equations are reduced to a system of nonlinear ordinary differential equations using a similarity ...
Mohd Ishak, Anuar, Rosali, Haliza
core   +1 more source

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