Results 121 to 130 of about 2,588,382 (336)

On the pion electroproduction amplitude

, 2001
We analyze amplitudes for the pion electroproduction on proton derived from Lagrangians based on the local chiral SU(2) x SU(2) symmetries. We show that such amplitudes do contain information on the nucleon axial form factor F_A in both soft and hard ...
A. Liesenfeld, A.I. Vainstein, A.S. Esaulov, B. De Tollis, D. Drechsler, D.S. Beder, D.S. Beder, D.Yu. Bardin, E. Ivanov, E. Truhlík, E. Truhlík, E.A. Ivanov, F.C. Khanna, G. Benfatto, H. Haberzettl, H. Haberzettl, H. Haberzettl, H.P.C. Rood, H.W. Fearing, J. Smejkal, J. Smejkal, J.L. Friar, M. Bando, N. Dombey, P. Christillin, S. Choi, S. Weinberg, S.L. Adler, S.L. Adler, S.L. Adler, U.-G. Meissner, V. Bernard, V. Bernard, V. De Alfaro   +33 more
core   +1 more source

Numerical Studies of Influencing Factors on the Homogeneity of the Powder Mixture during the Powder Spreading Process of Powder Bed Fusion–Laser Beam/Metal

Advanced Engineering Materials, EarlyView.
AISI 304L stainless steel powder is mixed with silicon nitride (Si3N4) powder and processed by PBF‐LB/M, allowing partial retention of Si3N4. The numerical approach effectively predicts the Si3N4 powder homogeneity and N content distribution on the powder bed. Recent studies have focused on the alloying of nitrogen (N) in high‐alloy stainless steels by
Yuanbin Deng, Ziping Sang, Jiali Zhang, Felix Radtke, Louis Becker, Simone Herzog, Sebastian Weber, Christoph Broeckmann   +7 more
wiley   +1 more source

Amplitude control of quantum interference

, 2012
Usually, the oscillations of interference effects are controlled by relative phases. We show that varying the amplitudes of quantum waves, for instance by changing the reflectivity of beam splitters, can also lead to quantum oscillations and even to Bell
E. Hecht, E. Mach, F. Laloë, J. S. Bell, J. S. Bell, W. J. Mullin   +5 more
core   +1 more source

Soft‐Layered Composites with Wrinkling‐Activated Multi‐Linear Elastic Behavior, Stress Mitigation, and Enhanced Strain Energy Storage

Advanced Engineering Materials, EarlyView.
In this study, exciting new bi‐/multi‐linear elastic behavior of soft elastic composites that accompany the activation of wrinkling in the embedded interfacial layers is analyzed. The new features and performance of these composite materials, including dramatic enhancements in energy storage, can be tailored by the concentration of interfacial layers ...
Narges Kaynia, Nicholas Xuanlai Fang, Mary C. Boyce   +2 more
wiley   +1 more source

Approximation of the scattering amplitude [PDF]

, 2007
The simultaneous solution of Ax=b and ATy=g is required in a number of situations. Darmofal and Lu have proposed a method based on the Quasi-Minimal residual algorithm (QMR). We will introduce a technique for the same purpose based on the LSQR method and
Golub, Gene H., Stoll, Martin, Wathen, A. J.   +2 more
core   +2 more sources

Mechanisms of Increasing Weld Depth during Temporal Power Modulation in High‐Power Laser Beam Welding

Advanced Engineering Materials, EarlyView.
Temporal power modulation increases weld depth in high‐power laser beam welding of dissimilar round bars by nearly 20% compared to same average continuously welded welding power. The mechanism of action also applies to sheet welding and depends on the inertia of keyhole depth for the modulated laser beam power.
Jan Grajczak, David Reynders, Christian Nowroth, Jens Twiefel, Jörg Wallaschek, Sarah Nothdurft, Jörg Hermsdorf, Stefan Kaierle   +7 more
wiley   +1 more source

Sound Quality and Striking Position of a Conga Drum [PDF]

Journal of Science International School Bangkok, 2014
The relationship between the location at which a drum membrane was struck and the quality of sound produced was investigated by striking the drum at several distances between the center and the rim.
Dylan Harvey, Tyler Colton Whiteley
doaj  

Parton branching at amplitude level

, 2019
We present an algorithm that evolves hard processes at the amplitude level by dressing them iteratively with (massless) quarks and gluons. The algorithm interleaves collinear emissions with soft emissions and includes Coulomb/Glauber exchanges.
Forshaw, Jeffrey R., Holguin, Jack, Plätzer, Simon   +2 more
core   +1 more source

Icephobic Gradient Polymer Coatings Coupled with Electromechanical De‐icing Systems: A Promising Ice Repellent Hybrid System

Advanced Engineering Materials, EarlyView.
A hybrid system for de‐icing made of gradient polymer coatings, deposited on aluminum coupled with an electromechanical system, is demonstrated as an effective and durable strategy for reducing drastically ice adhesion. The system is capable of detaching ice blocks over the coating in less than 1 s, regardless of the ice type and covered area ...
Gabriel Hernández Rodríguez, Giulia Gastaldo, Luca Stendardo, Younes Rafik, Jason Pothin, Marc Budinger, Carlo Antonini, Valérie Pommier‐Budinger, Anna Maria Coclite   +8 more
wiley   +1 more source

Amplitude bounds for biochemical oscillators

, 2017
We present a practical method to obtain bounds for the oscillation minima and maxima of large classes of biochemical oscillator models that generate oscillations through a negative feedback.
Jörg, David J.
core   +1 more source