Results 31 to 40 of about 3,343,164 (302)

Orbital angular momentum: origins, behavior and applications [PDF]

, 2011
As they travel through space, some light beams rotate. Such light beams have angular momentum. There are two particularly important ways in which a light beam can rotate: if every polarization vector rotates, the light has spin; if the phase structure ...
Padgett, M.J., Yao, Alison, Padgett, Miles, Alison M. Yao, Miles J. Padgett, Yao, A.M.   +5 more
core   +1 more source

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

FEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei, Fredrik Orädd, Konstantinos Magkakis, Magnus Andersson   +3 more
wiley   +1 more source

Proposta experimental do estudo de colisões entre bolas de borracha e superfície plana

Revista Brasileira de Ensino de Física
O estudo sobre a conservação do momento linear e as forças impulsivas nos cursos introdutórios de física tem abordagem baseada na colisão de objetos que se comportam como partículas.
Francisco José Arnold, Alan Gabriel Godeny, Murilo Matoso Costa, João Francisco Viana, Rodrigo Luiz Ximenes   +4 more
doaj   +1 more source

Localizing the energy and momentum of linear gravity [PDF]

Physical Review D, 2010
A framework is developed which quantifies the local exchange of energy and momentum between matter and the linearized gravitational field. We derive the unique gravitational energy-momentum tensor consistent with this description, and find that this tensor only exists in the harmonic gauge. Consequently, nearly all the gauge freedom of our framework is
Butcher, Luke M., Hobson, Michael, Lasenby, Anthony   +2 more
openaire   +2 more sources

Portfolio structure and optimisation of momentum returns [PDF]

, 2010
This study analyses momentum returns in 54 countries covering 34 years. It is the first study where optimising programmes are applied to momentum returns and portfolio selection.
Gupta, Kartick
core  

Comparative Effectiveness and Safety of Inebilizumab Versus Rituximab in AQP4‐IgG‐Positive NMOSD

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Rituximab (anti‐CD20, RTX) and inebilizumab (anti‐CD19, INE) represent B‐cell‐depleting therapies used for aquaporin‐4 antibody‐positive (AQP4‐IgG+) neuromyelitis optica spectrum disorder (NMOSD); however, direct comparative evidence remains limited.
Jie Lin, Binbin Xue, Dewei Xie, Jia Li, Juyuan Pan, Lanbing Zhu, Qiaowen Tong, Jing Lin, Ruofan Zhu, Xu Zhang, Junhui Xia, Xiang Li   +11 more
wiley   +1 more source

Center of mass of a system of variable mass particles

Revista Brasileira de Ensino de Física
We study the dynamics of the center of mass (CM) of a set of particles when the number of particles in the system varies during a short interval of time, or when the value of the mass of one of the particles depends on time.
M.T. Thomaz, E.V. Corrêa Silva
doaj   +1 more source

Sub-cycle time resolution of multi-photon momentum transfer in strong-field ionization

Nature Communications, 2019
Understanding momentum transfer in light–matter interaction is intriguing. Here the authors study momentum transfer from photons to electrons and observe a time delay in the linear momentum transfer during strong-field ionization of xenon atoms using ...
Benjamin Willenberg, Jochen Maurer, Benedikt W. Mayer, Ursula Keller   +3 more
doaj   +1 more source

Localizing the angular momentum of linear gravity [PDF]

Physical Review D, 2012
Includes additional appendix regarding the interpretation of the trace of the spin ...
Butcher, Luke M., Lasenby, Anthony, Hobson, Michael   +2 more
openaire   +2 more sources

Evaluation of Dried Plasma Spot‐Based Quantification of Glial Fibrillary Acidic Protein as a Disease‐Associated Biomarker in Neuromyelitis Optica Spectrum Disorder

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To evaluate the diagnostic accuracy of glial fibrillary acidic protein (GFAP) measured in dried plasma spots versus conventional plasma‐ and serum‐GFAP testing for assessment of disease severity in aquaporin‐4 immunoglobulin G–positive neuromyelitis optica spectrum disorder (AQP4‐IgG+ NMOSD).
Felix Wohlrab, Evelyn Alvarez, Roua Hamdi, Bingqing Zhang, Hayeun Ji, Niyati Jhaveri, Patrick Schindler, Pedro Sanchez, Pia S. Sperber, Tanja Schmitz‐Hübsch, Frederike C. Oertel, Nisa Vorasoot, Najib Kissani, Falko Böhringer, Jens Kuhle, Anne‐Katrin Pröbstel, Xiao‐Jun Ma, Péter Körtvelyessy, Patrick Waters, Friedemann Paul   +19 more
wiley   +1 more source