Results 101 to 110 of about 231,942 (269)

Postoperative posterior ischemic optic neuropathy (PION) following right pterional meningioma surgery

open access: yesAnnals of Indian Academy of Neurology, 2016
Postoperative visual loss (POVL) is an unpredictable complication of nonocular surgeries. Posterior ischemic optic neuropathy (PION) is particularly feared in spinal surgeries in the prone position.
Boby Varkey Maramattom   +3 more
doaj   +1 more source

An improved hadronic model for pion electroproduction

open access: yesPhysics Letters B, 2020
Current measurements of the high energy behavior of the pion form factor are obtained from pion electroproduction data. These values are model dependent, utilizing the Vanderhaeghen, Guidal and Laget Regge (VGL) Model for their extraction.
Robert J. Perry   +2 more
doaj   +1 more source

Cosmic Ray Counting Variability From Water‐Cherenkov Detectors as a Proxy of Stratospheric Conditions in Antarctica

open access: yesEarth and Space Science, Volume 12, Issue 11, November 2025.
Abstract This work examines atmospheric effects on cosmic ray counts observed by a Water‐Cherenkov detector at the Argentine Antarctic Marambio Station. We analyze the influence of ground‐level barometric pressure and geopotential height at various pressure levels on daily particle rates, finding the strongest association at 100 hPa, linked to ...
N. A. Santos   +7 more
wiley   +1 more source

Decay Widths of X(1835) as Nucleon-Antinucleon Bound State

open access: yes, 2012
Partial decay widths of various decay channels of the X(1835) are evaluated in the 3P0 quark model, assuming that the X(1835) is a nucleon-antinucleon bound state.
Faessler, Amand   +3 more
core   +1 more source

Correlation Patterns of Muon Flux With Vertical Atmospheric Profiles: Insights From Monte Carlo Simulations

open access: yesJournal of Geophysical Research: Space Physics, Volume 130, Issue 11, November 2025.
Abstract The production, attenuation, and absorption of secondary cosmic rays (SCR) are influenced by atmospheric parameters such as air pressure and temperature. To reliably correlate SCR flux measurements with atmospheric ionization driven by energetic particle precipitation, these dependencies must be quantified.
A. Al‐Qaaod   +11 more
wiley   +1 more source

Chiral extrapolation of the sigma resonance

open access: yesPhysics Letters B, 2018
We analyze results on isoscalar ππ scattering from a Nf=2+1 lattice QCD calculation by the HadronSpectrum collaboration by re-summing the two-flavor chiral scattering amplitude of the next-to-leading order in the so-called inverse amplitude method.
Michael Döring, Bin Hu, Maxim Mai
doaj   +1 more source

Management of ischemic optic neuropathies

open access: yesIndian Journal of Ophthalmology, 2011
Ischemic optic neuropathies (IONs) consist primarily of two types: anterior ischemic optic neuropathy (AION) and posterior ischemic optic neuropathy (PION).
Hayreh Sohan
doaj  

Hard exclusive pion electroproduction at backward angles with CLAS

open access: yesPhysics Letters B, 2018
We report on the first measurement of cross sections for exclusive deeply virtual pion electroproduction off the proton, ep→e′nπ+, above the resonance region at backward pion center-of-mass angles.
K. Park   +121 more
doaj   +1 more source

Determination of the pion distribution amplitude

open access: yes, 2013
Right now, we have not enough knowledge to determine the hadron distribution amplitudes (DAs) which are universal physical quantities in the high energy processes involving hadron for applying pQCD to exclusive processes.
Huang, Tao, Wu, Xing-Gang, Zhong, Tao
core   +1 more source

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