Results 21 to 30 of about 2,017,034 (245)

K X-ray Emission for Slow Oxygen Ions Approaching a Copper Metal Surface

open access: yesAtoms, 2022
We report on the K X-ray emission for 9–140 keV oxygen ions with initial charge states from 3 to 7 approaching a copper surface. The peak center of the measured X-ray spectrum slightly shifts towards higher energies with the increasing of the initial ...
Zhangyong Song   +11 more
doaj   +1 more source

Ion escape from the high latitude magnetopause: analysis of oxygen and proton dynamics in the presence of magnetic turbulence [PDF]

open access: yesAnnales Geophysicae, 2007
Recent Cluster observations of the vicinity of the high latitude magnetopause indicate the presence of beams of singly charged oxygen ions, which are of ionospheric origin.
A. Taktakishvili   +7 more
doaj   +1 more source

Hypothesis : soluble Aβ oligomers in association with redox-active metal ions are the optimal generators of reactive oxygen species in Alzheimer's disease [PDF]

open access: yes, 2010
Considerable evidence points to oxidative stress in the brain as an important event in the early stages of Alzheimer's disease (AD). The transition metal ions of Cu, Fe, and Zn are all enriched in the amyloid cores of senile plaques in AD.
Tabner, Brian J   +5 more
core   +5 more sources

The Impact of Nanoscale Percolation in Yttrium‐Doped BaZrO3 on the Oxygen Ion and Proton Conductivities: A Density Functional Theory and Kinetic Monte Carlo Study

open access: yesAdvanced Energy & Sustainability Research, 2022
Yttrium‐doped BaZrO3 is known for its high proton conductivity, making it an advanced energy material for various applications, like electrolyzers, fuel cells, or methane conversion cells.
Fabian M. Draber   +4 more
doaj   +1 more source

The role of atomic oxygen concentration in the ionization balance of the lower ionosphere during solar proton events [PDF]

open access: yesAnnales Geophysicae, 2008
The influence of atomic oxygen concentration on the height distribution of the main positive and negative ions and on electron density in the mesosphere is studied for the conditions prevailing during the solar proton event on 17 January 2005.
A. Osepian   +3 more
doaj   +1 more source

Bond-length distributions for ions bonded to oxygen: Metalloids and post-transition metals [PDF]

open access: yes, 2017
Bond-length distributions are examined for thirty-three configurations of the metalloid ions and fifty-six configurations of the post-transition-metal ions bonded to oxygen.
Olivier Charles, Gagné   +1 more
core   +2 more sources

Multiscale hybrid modeling of the impact response of the Earth’s magnetotail to ionospheric O+ outflow

open access: yesFrontiers in Astronomy and Space Sciences, 2023
Ionospheric outflow plays an important role in coupling the ionosphere with the solar wind-magnetosphere system. Previous multi-fluid MHD studies explored the global influence of oxygen ions of ionospheric origin (O+) on magnetospheric dynamics.
Yuri A. Omelchenko   +6 more
doaj   +1 more source

Hydration and Solvation of Metal Ions

open access: yes, 2023
This chapter summarizes the experimentally reported structures of hydrated and solvated metal ions in solution and the solid state. The oxygen donor solvents dimethylsulfoxide, N,N-dimethylformamide, and N,N′-dimethylpropyleneurea and the nitrogen donor ...
Sveriges lantbruksuniversitet.   +1 more
core   +1 more source

Jupiter Oxygen Corporation/Albany Research Center Crada Progress Report, September

open access: yes, 2004
The Albany Research Center (ARC) has developed a new Integrated Pollutant Removal (IPR) process for fossil-fueled boilers. Pursuant to a cooperative research and development agreement (CRADA) with Jupiter Oxygen Corporation, ARC currently is studying the
Turner, Paul C.   +1 more
core   +1 more source

Development of a non-invasive method to detect pericellular spatial oxygen gradients using FLIM [PDF]

open access: yes, 2011
PhDExtracellular oxygen concentrations affect cellular metabolism and influence tissue function. Detection methods for these extracellular oxygen concentrations currently have poor spatial resolution and are frequently invasive.
Hosny, Neveen Amera
core   +4 more sources

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