Results 81 to 90 of about 2,616,719 (394)

Radius of a Photon Beam with Orbital Angular Momentum [PDF]

open access: yesJ. Opt 15, 075706 (2013), 2012
We analyze the transverse structure of the Gouy phase shift in light beams carrying orbital angular momentum and show that the Gouy radius $r_G$ characterizing the transverse structure grows as $\sqrt{2p+|\ell|+1}$ with the nodal number $p$ and photon angular momentum number $\ell$. The Gouy radius is shown to be closely related to the root-mean-square
arxiv   +1 more source

Theoretical uncertainties on the radius of low- and very-low mass stars [PDF]

open access: yes, 2018
We performed an analysis of the main theoretical uncertainties that affect the radius of low- and very-low mass-stars predicted by current stellar models. We focused on stars in the mass range 0.1-1Msun, on both the zero-age main-sequence (ZAMS) and on 1,
Degl'Innocenti, S.   +2 more
core   +2 more sources

On the radius of habitable planets [PDF]

open access: yesAstronomy & Astrophysics, 2013
The conditions that a planet must fulfill to be habitable are not precisely known. However, it is comparatively easier to define conditions under which a planet is very likely not habitable. Finding such conditions is important as it can help select, in an ensemble of potentially observable planets, which ones should be observed in greater detail for ...
openaire   +6 more sources

Bohr radius for locally univalent harmonic mappings [PDF]

open access: yes, 2017
We consider the class of all sense‐preserving harmonic mappings f=h+g¯ of the unit disk D , where h and g are analytic with g(0)=0 , and determine the Bohr radius if any one of the following conditions holds: 1.h is bounded in D .
I. Kayumov, S. Ponnusamy, Nail Shakirov
semanticscholar   +1 more source

An efficient strategy for producing RNA‐free Nucleocapsid protein of SARS‐CoV‐2 for biochemical and structural investigations

open access: yesFEBS Open Bio, EarlyView.
Cleavable N‐terminal Thioredoxin fusion enabled soluble expression and purification of otherwise insoluble SARS‐CoV‐2 Nucleocapsid (N) protein. A four‐step purification strategy yielded highly homogeneous, RNA‐free N protein. Binding assays showed high RNA affinity (Kd ~ 28 nm). The study will facilitate high‐resolution structural studies of N protein,
Shweta Singh, Gagan D. Gupta
wiley   +1 more source

MASS–RADIUS RELATION FOR ROCKY PLANETS BASED ON PREM [PDF]

open access: yes, 2015
Several small dense exoplanets are now known, inviting comparisons to Earth and Venus. Such comparisons require translating their masses and sizes to composition models of evolved multi-layer interior planets.
L. Zeng, D. Sasselov, S. Jacobsen
semanticscholar   +1 more source

Beam model development and clinical experience with RadCalc for treatment plan quality assurance in online adaptive workflow with an MR‐linac

open access: yesJournal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose The aim of this work was to report on the optimization, commissioning, and validation of a beam model using a commercial independent dose verification software RadCalc version 7.2 (Lifeline Software Inc, Tyler, TX, USA), along with 4 years of experience employing RadCalc for offline and online monitor unit (MU) verification on the ...
Urszula Jelen   +3 more
wiley   +1 more source

THE DENSE MATTER EQUATION OF STATE FROM NEUTRON STAR RADIUS AND MASS MEASUREMENTS [PDF]

open access: yes, 2015
We present a comprehensive study of spectroscopic radius measurements of twelve neutron stars obtained during thermonuclear bursts or in quiescence. We incorporate, for the first time, a large number of systematic uncertainties in the measurement of the ...
F. Özel   +5 more
semanticscholar   +1 more source

Elbow dislocation with ipsilateral fracture of radius and ulna in a child – Case report and literature review

open access: yesJournal of Orthopaedic Diseases and Traumatology, 2019
Fracture of diaphyseal forearm bones is common, while the elbow dislocation is a rare injury in the pediatric age group. Both injuries are widely reported in isolation or with various associated injuries.
Ganesh Singh Dharmshaktu
doaj   +1 more source

On a Neutrino Electroweak Radius

open access: yes, 2003
We study a combination of amplitudes for neutrino scattering that can isolate a (gauge-invariant) difference of chirality-preserving neutrino electroweak radii for $\nu_\mu$ and $\nu_\tau$. This involves both photon and $Z_\mu$ exchange contributions. It
B. Kayser   +42 more
core   +1 more source

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