Results 31 to 40 of about 26,049 (238)

Global bifurcations to subcritical magnetorotational dynamo action in Keplerian shear flow [PDF]

open access: yes, 2013
Magnetorotational dynamo action in Keplerian shear flow is a three-dimensional, non-linear magnetohydrodynamic process whose study is relevant to the understanding of accretion processes and magnetic field generation in astrophysics.
Cossu, Carlo   +12 more
core   +1 more source

Recycling of Carbon Fiber Reinforced Polymers in a Subcritical Acetic Acid Solution [PDF]

open access: yes, 2022
A novel single-stage solvolysis process is demonstrated for recycling carbon fibers from an epoxy-based composite material using 50 wt% acetic acid solution under subcritical conditions. The process yields 100% recovery efficiency for fibers in less than
Brian , Pinkard   +2 more
core   +1 more source

Bifurcation analysis of a three dimensional system

open access: yesJournal of Hebei University of Science and Technology, 2018
In order to enrich the stability and bifurcation theory of the three dimensional chaotic systems, taking a quadratic truncate unfolding system with the triple singularity equilibrium as the research subject, the existence of the equilibrium, the ...
Yongwen WANG, Zhiqin QIAO, Yakui XUE
doaj   +1 more source

Subcritical turbulence in the Mega Ampere Spherical Tokamak [PDF]

open access: yes, 2018
The transport of heat out of tokamak plasmas by turbulence is the dominant mechanism limiting the performance of fusion reactors. Turbulence can be driven by the ion temperature gradient (ITG) and suppressed by toroidal equilibrium scale sheared flows.
van Wyk, Ferdinand
core   +1 more source

Withdrawal from a two-layer inviscid fluid in a duct [PDF]

open access: yes, 1998
The steady simultaneous withdrawal of two inviscid fluids of different densities in a duct of finite height is considered. The flow is two-dimensional, and the fluids are removed by means of a line sink at some arbitrary position within the duct.
Hocking, Graeme C.   +3 more
core   +1 more source

Stability and activity of doped transition metal zeolites in the hydrothermal processing

open access: yesFrontiers in Energy Research, 2015
This study investigates the stability and activity of HZSM-5 doped with metals such as molybdenum, nickel, copper and iron in under hydrothermal conditions used for the direct liquefaction of microalgae.
Thomas François Robin   +3 more
doaj   +1 more source

Cygnus Performance in Subcritical Experiments [PDF]

open access: yes2007 IEEE 34th International Conference on Plasma Science (ICOPS), 2007
Summary form only given. The Cygnus Dial Beam Radiographic Facility consists of two identical radiographic sources with the following specifications: 4-rad dose at 1 m, 1-mm spot size, 50-ns pulse length, 2.25-MeV endpoint energy. The facility is located in an underground tunnel complex at the Nevada Test Site.
J. Smith   +9 more
openaire   +1 more source

Effect of Surface Morphological Changes on Flow Over a Sphere [PDF]

open access: yes, 2010
An experimental investigation was undertaken to examine the effect of a morphing surface on the flow over a sphere in the Reynolds number range of 5x10⁴ to 5x10⁵. Here, a morphing surface is defined as a continuous surface that undergoes small amplitude
Norman, Adam Keith
core   +1 more source

Physicochemical characteristics of chitosan from swimming crab (Portunus trituberculatus) shells prepared by subcritical water pretreatment

open access: yesScientific Reports, 2021
The physicochemical properties of chitosan obtained from the shells of swimming crab (Portunus trituberculatus) and prepared via subcritical water pretreatment were examined.
Gengxin Hao   +6 more
doaj   +1 more source

Effects of extraction methods on the quality of elderberry seed oil

open access: yesShipin yu jixie, 2022
Objective: This study aimed to compare the effects of different extraction methods including cold pressing extraction, soxhlet extraction and subcritical butane extraction on the yield, physicochemical properties, fatty acid composition and in vitro ...
XUE Qing   +7 more
doaj   +1 more source

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