Results 41 to 50 of about 230,654 (298)

Optimal Segment Control of Active Twist Rotor for Power Reduction in Forward Flight

open access: yesApplied Sciences, 2021
The segment control of active twist rotor is investigated to evaluate the effectiveness in rotor power reduction. A numerical model for predicting the isolated rotor power and loads in steady level flights is deployed and validated. A parametric sweep of
Xiaochi Zhang, Zhiqiang Wan, De Yan
doaj   +1 more source

Smectic Order in Double-Twist Cylinders [PDF]

open access: yes, 1997
I propose a double-twist texture with local smectic order, which may have been seen in recent experiments. As in the Renn-Lubensky TGB phase, the smectic order is broken only through a lattice of screw dislocations. A melted lattice of screw dislocations
Kamien, Randall D.
core   +2 more sources

Phase diagram of twisted mass lattice QCD [PDF]

open access: yesPhysical Review D, 2004
13 pages, 5 figures, small clarifying comments added in introduction, minor typos fixed. Version to be published in Phys.
Sharpe, Stephen R., Wu, Jackson M. S.
openaire   +2 more sources

Do the short helices exist in the nematic TB phase? [PDF]

open access: yes, 2014
Dimeric compounds forming twist-bend nematic, Ntb, phase show unusual optical textures related to the formation of arrays of focal conic defects (FCDs).
Ahmed, Ziauddin   +6 more
core   +2 more sources

Long-wavelength torsional modes of solar coronal plasma structures [PDF]

open access: yes, 2010
Aims. We consider the effects of the magnetic twist and plasma rotation on the propagation of torsional m = 0 perturbations of cylindrical plasma structures (straight magnetic flux tubes) in the case when the wavelength is much longer than the cylinder ...
Nakariakov, V. M. (Valery M.)   +2 more
core   +1 more source

Triply-Periodic Smectics [PDF]

open access: yes, 2006
Twist-grain-boundary phases in smectics are the geometrical analogs of the Abrikosov flux lattice in superconductors. At large twist angles, the nonlinear elasticity is important in evaluating their energetics.
Kamien, Randall D.   +1 more
core   +4 more sources

Propagation Characteristics of a Twisted Cosine-Gaussian Correlated Radially Polarized Beam

open access: yesApplied Sciences, 2018
Recently, partially coherent beams with twist phases have attracted growing interest due to their nontrivial dynamic characteristics. In this work, the propagation characteristics of a twisted cosine-Gaussian correlated radially polarized beam such as ...
Jipeng Zhang   +6 more
doaj   +1 more source

Twists, realizations and Hopf algebroid structure of kappa-deformed phase space

open access: yes, 2014
The quantum phase space described by Heisenberg algebra possesses undeformed Hopf algebroid structure. The $\kappa$-deformed phase space with noncommutative coordinates is realized in terms of undeformed quantum phase space.
Juric, Tajron   +2 more
core   +1 more source

(Vanishing) Twist in the Saddle-Centre and Period-Doubling Bifurcation [PDF]

open access: yes, 2003
The lowest order resonant bifurcations of a periodic orbit of a Hamiltonian system with two degrees of freedom have frequency ratio 1:1 (saddle-centre) and 1:2 (period-doubling).
Dullin, Holger R., Ivanov, Alexey V.
core   +6 more sources

Anatomy of a Discovery: The Twist–Bend Nematic Phase

open access: yesCrystals, 2022
New fluid states of matter, now known as liquid crystals, were discovered at the end of the 19th century and still provide strong themes in scientific research. The applications of liquid crystals continue to attract attention, and the most successful so
David Dunmur
doaj   +1 more source

Home - About - Disclaimer - Privacy