Results 21 to 30 of about 2,012,511 (304)

Skull Base Angle Morphometry in South Indian Population with Review on Terminology

open access: yesIndian Journal of Neurosurgery, 2022
Introduction Basal angle, Boogaard’s angle, and clival angle are frequently used in diagnosing the craniometric angle malformations either on radiography or now more on MRI.
Veeramani Raveendranath   +4 more
doaj   +1 more source

Meson resonances in forward-angle π+π− photoproduction

open access: yesPhysics Letters B, 2019
Assuming that the $π^+π^-$ photoproduction at forward angles and high energies is dominated by one pion exchange we calculate the $π^+π^-$ mass distributions for low partial waves. Predictions of the model agree well Assuming that the $π^+π^-$ photoproduction at forward angles and high energies is dominated by one pion exchange we calculate the $π^+π^-$
Ł. Bibrzycki   +3 more
openaire   +4 more sources

750 GeV diphoton resonance and electric dipole moments

open access: yesPhysics Letters B, 2016
We examine the implication of the recently observed 750 GeV diphoton excess for the electric dipole moments of the neutron and electron. If the excess is due to a spin zero resonance which couples to photons and gluons through the loops of massive vector-
Kiwoon Choi   +3 more
doaj   +1 more source

An examination of the resonances in modern flutes with ergonomically angled headjoints [PDF]

open access: yesThe Journal of the Acoustical Society of America, 2022
This paper investigates the passive resonance spectra of a modern Boehm flute body outfitted with a variety of transverse and end-blown ergonomic headjoints in an attempt to determine if there is anything intrinsic to the acoustics of these instruments that keeps them from being as good as the same flute with a standard headjoint. With the exception of
openaire   +2 more sources

Highly-Sensitive and Frequency-Selective Imaging of Defects via Local Defect Resonance [PDF]

open access: yes, 2014
In this paper, a consistent way to enhance acoustic, optical and thermal defect responses is suggested by using selective ultrasonic activation of defects based on the concept of local defect resonance (LDR).
Solodov Igor   +2 more
core   +1 more source

Resonance zones for interactions of magnetosonic waves with radiation belt electrons and protons

open access: yesGeoscience Letters, 2017
As an important plasma wave mode in the geospace, magnetosonic waves can interact with both radiation belt electrons and protons, thereby impacting the dynamics of magnetospheric particles.
Wenxun Zhang   +6 more
doaj   +1 more source

THz guided-mode resonance notch filter with variable filtering strength

open access: yesScientific Reports, 2021
In this paper, we propose a terahertz (THz) guided-mode resonance (GMR) notch filter made of a monolithic polyethylene terephthalate (PET) film, which has a monolayer grating structure.
Hyeon Sang Bark   +4 more
doaj   +1 more source

Mapping of low flip angles in magnetic resonance

open access: yesPhysics in Medicine and Biology, 2011
Errors in the flip angle have to be corrected in many magnetic resonance imaging applications, especially for T1 quantification. However, the existing methods of B1 mapping fail to measure lower values of the flip angle despite the fact that these are extensively used in dynamic acquisition and 3D imaging.
Balezeau, Fabien   +3 more
openaire   +5 more sources

Wireless Driving of a Micromirror Device by Electoromagnetic Excitation Tuned to Mechanical Resonance of Rotation

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2012
Wireless driving of a micromirror device is achieved by electromagnetic excitation tuned to the mechanical resonance of the mirror rotation. The micromirror used is designed for low-voltage-driving. Static mirror rotation angle is 7.7 deg.
Shinya KUMAGAI   +2 more
doaj   +1 more source

Nuclear Magnetic Resonance Determination of the Angle Ψ in Peptides [PDF]

open access: yesProceedings of the National Academy of Sciences, 1972
A simple theoretical model is used to suggest that the NCCH coupling constant, Jnh , has a dihedral angle dependence that can serve for estimating the angle Ψ in peptides. Some experimental comparisons are made to test the model; they include a new measurement of Jnh
S, Karplus, M, Karplus
openaire   +2 more sources

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