Results 71 to 80 of about 334,665 (350)

Tunable high-energy ion source via oblique laser pulse incidence on a double-layer target

open access: yes, 2007
The laser-driven acceleration of high quality proton beams from a double-layer target, comprised of a high-Z ion layer and a thin disk of hydrogen, is investigated with three-dimensional particle-in-cell simulations in the case of oblique incidence of a ...
A. V. Gurevich   +9 more
core   +1 more source

Asymptotic Steady State Solution to a Bow Shock with an Infinite Mach Number [PDF]

open access: yes, 2015
The problem of a cold gas flowing past a stationary object is considered. It is shown that at large distances from the obstacle the shock front forms a parabolic solid of revolution.
Sari, Re'em, Yalinewich, Almog
core   +3 more sources

Broadband Directional Thermal Radiation with Asymmetric Femtosecond Laser‐Processed Surfaces

open access: yesAdvanced Optical Materials, EarlyView.
Femtosecond laser processing is used to scalably create self‐organized angled microstructures which exhibit highly directional emissivity that occurs for all polarizations. Laser parameters are tuned to alter the surface features, control the direction of emission, and enhance the directional emissivity. Electromagnetic modeling is performed to analyze
Andrew Butler   +8 more
wiley   +1 more source

Iterative algorithms with seminorm-induced oblique projections

open access: yesAbstract and Applied Analysis, 2003
A definition of oblique projections onto closed convex sets that use seminorms induced by diagonal matrices which may have zeros on the diagonal is introduced.
Yair Censor, Tommy Elfving
doaj   +1 more source

Shock Geometry and Spectral Breaks in Large SEP Events [PDF]

open access: yes, 2009
Solar energetic particle (SEP) events are traditionally classified as "impulsive" or "gradual." It is now widely accepted that in gradual SEP events, particles are accelerated at coronal mass ejection-driven (CME-driven) shocks.
Cohen, C. M. S.   +6 more
core   +2 more sources

A Rare Case of a Vertical Oblique Scaphoid Fracture Nonunion [PDF]

open access: yesThe Journal of Hand Surgery, 2016
To the Editor: Three-dimensional computed tomography (CT) modeling enables accurate evaluation of fracture plane orientation in scaphoid fractures. Recently, Luria et al used this technique in 124 scaphoid fractures and concluded that practically all fractures were horizontal oblique, and not transverse.
ten Berg, Paul W. L., Strackee, Simon D.
openaire   +3 more sources

Selective Reflection of Chiral Ferroelectric Nematic Liquid Crystals Tuned by Electric Field Along the Helix Axis

open access: yesAdvanced Optical Materials, EarlyView.
It is demonstrated that in chiral ferroelectric nematic liquid crystals sandwiched between electrically conducting transparent plates, the reflection color can be reversibly tuned by electric fields applied along the helix axis. The proposed theoretical model, assuming field‐induced coiling of the helix axis, accounts for all observations.
Md Sakhawat Hossain Himel   +5 more
wiley   +1 more source

Insidious intraoperative ureteral injury as a complication in oblique lumbar interbody fusion surgery: a case report

open access: yesBMC Research Notes, 2017
Background Oblique lumbar interbody fusion surgery is a recently introduced minimally invasive lateral interbody fusion surgery for degenerative lumbar disease. There have been no reports of associated ureteral injury.
Go Kubota   +4 more
doaj   +1 more source

The oblique firehose instability in a bi-kappa magnetized plasma [PDF]

open access: yes, 2018
In this work, we derive a dispersion equation that describes the excitation of the oblique (or Alfv\'en) firehose instability in a plasma that contains both electron and ion species modelled by bi-kappa velocity distribution functions.
A. R. Meneses   +15 more
core   +2 more sources

Tailoring Electric and Magnetic Dipole Emission of Er3+ Ions via Toroidal Dipole Resonance of Si Nanodisk Hexagonal Array

open access: yesAdvanced Optical Materials, EarlyView.
Hexagonal arrays of silicon nanodisks are proposed to control 1.5 µm emission of Er3+ ions. Toroidal dipole resonance of the nanodisk array generates accessible magnetic hot spots at the surface, leading to enhanced and highly directional magnetic dipole emission along the surface‐normal direction via the magnetic Purcell effect.
Keisuke Moriasa   +3 more
wiley   +1 more source

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