Results 41 to 50 of about 246,659 (296)
B-Meson Distribution Amplitudes of Geometric Twist vs. Dynamical Twist
, 2005 Two- and three-particle distribution amplitudes of heavy pseudoscalar mesons of well-defined geometric twist are introduced. They are obtained from appropriately parametrized vacuum-to-meson matrix elements by applying those twist projectors which ...
A. G. Grozin +6 more
core +1 more source
TWIST-3 EFFECTS IN POLARIZED PHOTON STRUCTURE [PDF]
International Journal of Modern Physics A, 2003 The polarized photon structure is described by two spin structure functions [Formula: see text] and [Formula: see text] which can be studied in the future polarized ep or e+e- colliders. Here we investigate the QCD twist-3 effects in [Formula: see text] to the leading order in QCD.
Baba, Hideshi +2 more
openaire +2 more sources
Dynamic supercoiling bifurcations of growing elastic filaments
, 2003 Certain bacteria form filamentous colonies when the cells fail to separate after dividing. In Bacillus subtilis, Bacillus thermus, and cyanobacteria, the filaments can wrap into complex supercoiled structures as the cells grow.
Goldstein, Raymond E. +2 more
core +1 more source
Fabrication, optical properties, and applications of twisted two-dimensional materials
Nanophotonics, 2020 Two-dimensional (2D) materials such as graphene, black phosphorus, and transition metal dichalcogenides have attracted significant research attention due to their novel properties and wide range of applications in electronic and optoelectronic devices ...
Gao Xiao-Guang +5 more
doaj +1 more source
Modeling Helical Structures in Relativistic Jets
, 2003 Many jets exhibit twisted helical structures. Where superluminal motions are detected, jet orientation and pattern/flow speed are considerably constrained. In this case modeling efforts can place strong limits on conditions in the jet and in the external
Falle S. A. E. G. +3 more
core +2 more sources
Theory of self-assembled smectic-A "crenellated disks"
, 2013 Smectic-A monolayers self-assembled in aqueous solutions of chiral fd viruses and a polymer depletant have been shown to exhibit a variety of structures including large, flat disks and twisted ribbons.
Pelcovits, Robert A., Tu, Hao
core +1 more source
Perspectives on Exclusive Processes in QCD [PDF]
, 2002 Hard hadronic exclusive processes are now at the forefront of QCD studies, particularly because of their role in the interpretation of exclusive hadronic B decays.
Brodsky, Stanley J.
core +5 more sources
Calpain small subunit homodimerization is robust and calcium‐independent
FEBS Letters, EarlyView.Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy +4 more
wiley +1 more source
Formability of curved multilayer laminates via 3D printing using twisted continuous fiber composites
Heliyon, 2023 3D printers can print free-form 3D shapes; however, their mechanical properties are unsatisfactory. 3D printers can print 3D shapes freely but the resulting products exhibit unsatisfactory mechanical properties.
Keigo Nakajima, Ryosuke Matsuzaki
doaj +1 more source
Twisted bi-symplectic structure on Koszul twisted Calabi-Yau algebras
Selecta Mathematica, 2022 For a Koszul Artin-Schelter regular algebra (also called twisted Calabi-Yau algebra), we show that it has a "twisted" bi-symplectic structure, which may be viewed as a noncommutative and twisted analogue of the shifted symplectic structure introduced by Pantev, To n, Vaqui and Vezzosi.
Chen, Xiaojun +3 more
openaire +3 more sources