Results 101 to 110 of about 2,316,597 (371)

Cluster polylogarithms for scattering amplitudes [PDF]

Journal of Physics A: Mathematical and Theoretical, 2014
Motivated by the cluster structure of two-loop scattering amplitudes in N=4 Yang-Mills theory we define "cluster polylogarithm functions". We find that all such functions of weight 4 are made up of a single simple building block associated to the A_2 cluster algebra.
Anastasia Volovich, Marcus Spradlin, Miguel F. Paulos, John Golden   +3 more
openaire   +3 more sources

Functional parameters of spermatozoa obtained by a new selection device

FEBS Open Bio, EarlyView.
This study compares density gradient centrifugation and the LensHooke CA0™ device for sperm separation. DGC requires multiple steps, specialized equipment, and technical expertise. In contrast, the CA0 device offers key practical and methodological advantages, resulting in a faster, simpler, and more affordable sperm selection method.
Julio C. Chávez, Paulina Torres, Gabriela Carrasquel‐Martínez, María G. Figueroa‐Méndez, Diana Flores, Lina Villar, Israel Maldonado, Marcela B. Trevino, Claudia Treviño   +8 more
wiley   +1 more source

Discovery and Treatment of Action Potential‐Independent Myotonia in Hyperkalemic Periodic Paralysis

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Hyperkalemic periodic paralysis (hyperKPP) is characterized by attacks of transient weakness. A subset of hyperKPP patients suffers from transient involuntary contraction of muscle (myotonia). The goal of this study was to determine mechanisms causing myotonia in hyperKPP.
Chris Dupont, Adam Deardorff, Murad Nawaz, Andrew A. Voss, Mark M. Rich   +4 more
wiley   +1 more source

Time-reversed optical focusing through scattering media by digital full phase and amplitude recovery using a single phase-only SLM [PDF]

Journal of Innovative Optical Health Sciences, 2015
Focusing light though scattering media beyond the ballistic regime is a challenging task in biomedical optical imaging. This challenge can be overcome by wavefront shaping technique, in which a time-reversed (TR) wavefront of scattered light is generated
Qiang Yang, Xinzhu Sang, Daxiong Xu
doaj   +1 more source

An Improved Z-Transform Finite Difference Time Domain Method for Electromagnetic Scattering and Plasma Stealth

IEEE Access
The plasma sheath can absorb or reflect electromagnetic waves, thus affecting the communication of hypersonic vehicles. The study of attenuation and enhancement of electromagnetic scattering by plasma is of great significance.
Caixiong Han, Jiajie Wang, Lanfang Ding
doaj   +1 more source

The influence of phase-modulation on femtosecond time-resolved coherent Raman spectroscopy [PDF]

, 1988
The influence of phase-modulation on femtosecond time-resolved coherent Raman scattering is investigated theoretically and experimentally. The coherent Raman signal taken as a function of the spectral position shows unexpected temporal oscillations close
A. Laubereau, G. Mourou, J. Dobler, J.A. Vladmanis, J.E. Rothenberg, J.E. Rothenberg, J.M. Diels, M.C. Nuss, M.D. Levenson, N. Kohles, R. Leonhardt, R. Leonhardt, R.L. Fork, W. Holzapfel, W. Zinth, W. Zinth, W. Zinth, W.Z. Lin, Y. Ishida   +18 more
core   +1 more source

On triple-cut of scattering amplitudes

Physics Letters B, 2007
It is analysed the triple-cut of one-loop amplitudes in dimensional regularisation within spinor-helicity representation. The triple-cut is defined as a difference of two double-cuts with the same particle content, and a same propagator carrying, respectively, causal and anti-causal prescription in each of the two cuts. That turns out into an effective
openaire   +5 more sources

Consolidate Overview of Ribonucleic Acid Molecular Dynamics: From Molecular Movements to Material Innovations

Advanced Engineering Materials, EarlyView.
Molecular dynamics simulations are advancing the study of ribonucleic acid (RNA) and RNA‐conjugated molecules. These developments include improvements in force fields, long‐timescale dynamics, and coarse‐grained models, addressing limitations and refining methods.
Kanchan Yadav, Iksoo Jang, Jong Bum Lee
wiley   +1 more source

Scaled analog measurements of light scattering by aggregates with merging monomers

Atti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, 2011
This work reports on the experimental analysis of light scattering by aggregates with merging monomers. For such complex shape particles, scaled targets can be built using a rapid prototyping technique (stereo lithography).
J.-M. Geffrin, R. Vaillon, C. Eyraud, B. Lacroix   +3 more
doaj   +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