Results 11 to 20 of about 610,545 (264)

Implementation of boundary conditions for optimized high-order compact schemes [PDF]

open access: yes, 1997
The optimized high-order compact (OHOC) finite difference schemes, proposed as central schemes are used for aeroacoustic computations on interior nodes.
Kim, J.W., Lee, D.J.
core   +1 more source

Optimization of the combing noil percentage for quality single and ply compact spun yarn

open access: yesAlexandria Engineering Journal, 2013
No doubt that ring spinning will continue to remain the important yarn manufacturing system for the short staple spinning. Innovation has occurred through the introduction of compact spinning, which offers superior quality and better fiber utilization ...
Magdi El Messiry   +2 more
doaj   +1 more source

Onset of superradiant instabilities in rotating spacetimes of exotic compact objects

open access: yesJournal of High Energy Physics, 2017
Exotic compact objects, horizonless spacetimes with reflective properties, have intriguingly been suggested by some quantum-gravity models as alternatives to classical black-hole spacetimes.
Shahar Hod
doaj   +1 more source

Ultra-spinning exotic compact objects supporting static massless scalar field configurations

open access: yesPhysics Letters B, 2017
Horizonless spacetimes describing highly compact exotic objects with reflecting (instead of absorbing) surfaces have recently attracted much attention from physicists and mathematicians as possible quantum-gravity alternatives to canonical classical ...
Shahar Hod
doaj   +1 more source

Compact Spinning in Cotton-based Core-spun Yarn: A Review [PDF]

open access: yes, 2021
In today's world, textile outfits are chosen not only for their functional properties but also for their comfort. As cotton is synonymous with comfort in textile industries, cotton-based core-spun yarn is becoming increasingly popular day by day, where ...
Rashid, Ehsanur   +2 more
core   +1 more source

N3LO gravitational quadratic-in-spin interactions at G 4

open access: yesJournal of High Energy Physics, 2021
We compute the N3LO gravitational quadratic-in-spin interactions at G 4 in the post-Newtonian (PN) expansion via the effective field theory (EFT) of gravitating spinning objects for the first time.
Michèle Levi   +2 more
doaj   +1 more source

Prediction of Cotton Yarn’s Characteristics by Image Processing and ANN

open access: yesAlexandria Engineering Journal, 2022
Machine learning and computer vision were employed in quality assessment in the textile field for more objectivity and less expense. The estimation of yarn various parameters is of great importance for the producers and customers in order to achieve ...
Manal R. Abd-Elhamied   +4 more
doaj   +1 more source

Numerical Simulation of the Condensing Effect of Different Suction Slots on Fiber Strands in a Compact Siro Spinning Machine with Lattice Apron

open access: yesAUTEX Research Journal, 2020
Compact-siro spun with lattice apron combines compact spinning and siro spinning, and is widely put into practice. In this paper, compact-siro spun models with the parallel shaped slots, oblique parallel shaped slots and V-shaped slots were simulated ...
Han Chenchen, Gao Weidong, Chen Lifen
doaj   +1 more source

Thick Accretion Disk and Its Super Eddington Luminosity around a Spinning Black Hole

open access: yesJournal of Astronomy and Space Sciences, 2021
In the general accretion disk model theory, the accretion disk surrounding an astronomical object comprises fluid rings obeying Keplerian motion. However, we should consider relativistic and rotational effects as we close in toward the center of ...
Uicheol Jang, Hongsu Kim, Yu Yi
doaj   +1 more source

The Influence of a Rotary Compact Groove Cylinder on the Properties of Ring Spun Yarn

open access: yesJournal of Natural Fibers, 2023
Hairiness is a key index for yarn quality as it has a critically negative influence on weaving process. Yarns with less hairiness are highly demanded in textile industry.
Hao Yu   +8 more
doaj   +1 more source

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