Results 41 to 50 of about 4,078,410 (323)

Changes in air quality in different phases of forest management process in a sub-mountain beech ecosystem (West Carpathian Mts.)

open access: yesJournal of Forest Science, 2009
We studied air quality in a sub-mountain beech ecosystem in the Kremnické vrchy Mts., Central Slovakia. We chose the method of passive sampling. The amounts of airborne pollutants (H+ and O3) were determined at regular time intervals, covering the whole ...
D. Kellerová
doaj   +1 more source

Investigation of radial distribution of atomic hydrogen flux to the plasma facing components in steady state discharges in QUEST tokamak

open access: yesNuclear Materials and Energy, 2021
To study radial distribution of hydrogen flux in peripheral plasma in long duration tokamak discharges, permeation and Langmuir reciprocate probes are used.
A. Kuzmin   +20 more
doaj   +1 more source

Evidence For The Production Of Slow Antiprotonic Hydrogen In Vacuum [PDF]

open access: yes, 2006
We present evidence showing how antiprotonic hydrogen, the quasistable antiproton-proton (pbar-p) bound system, has been synthesized following the interaction of antiprotons with the hydrogen molecular ion (H2+) in a nested Penning trap environment. From
Amoretti, M.   +30 more
core   +2 more sources

Formation of vacancy-type defects and hydride introduced by irradiation in pure titanium

open access: yesJournal of Materials Research and Technology, 2023
The effect of hydrogen ion irradiation on the formation of hydride and vacancy-type defects in pure titanium was investigated by X-ray diffraction (XRD), Doppler broadening spectrum (DBS), and coincidence Doppler broadening spectrum (CDB) based on slow ...
Xiao Liu   +7 more
doaj   +1 more source

Hydrogen induced optically-active defects in silicon photonic nanocavities [PDF]

open access: yes, 2014
This work was supported by Era-NET NanoSci LECSIN project coordinated by F. Priolo, by the Italian Ministry of University and Research, FIRB contract No. RBAP06L4S5 and by the EPSRC UKSp project.
Boninelli, S.   +10 more
core   +1 more source

Toward Hydrogen‐Free and Dendrite‐Free Aqueous Zinc Batteries: Formation of Zincophilic Protective Layer on Zn Anodes

open access: yesAdvancement of science, 2022
Rechargeable aqueous Zn‐ion batteries (ZIBs) are regarded as one of the most promising devices for the next‐generation energy storage system. However, the uncontrolled dendrite growth on Zn metal anodes and the side hydrogen evolution reaction, which has
Lin Hong   +7 more
semanticscholar   +1 more source

Crystal structure of tris(piperidinium) hydrogen sulfate sulfate

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2015
In the title molecular salt, 3C5H12N+·HSO4−·SO42−, each cation adopts a chair conformation. In the crystal, the hydrogen sulfate ion is connected to the sulfate ion by a strong O—H...O hydrogen bond. The packing also features a number of N—H...O hydrogen
Tamara J. Lukianova   +2 more
doaj   +1 more source

Study of hyperfine structure in simple atoms and precision tests of the bound state QED [PDF]

open access: yes, 2006
We consider the most accurate tests of bound state QED, precision theory of simple atoms, related to the hyperfine splitting in light hydrogen-like atoms.
Bennett   +27 more
core   +2 more sources

Involvement of K+ ATP and Ca2+ channels in hydrogen sulfide-suppressed ageing of porcine oocytes

open access: yesBiological Research, 2018
Background Hydrogen sulfide has been shown to improve the quality of oocytes destined for in vitro fertilization. Although hydrogen sulfide is capable of modulating ion channel activity in somatic cells, the role of hydrogen sulfide in gametes and ...
Jan Nevoral   +6 more
doaj   +1 more source

Electrospun catalyst layers using short-side-chain ionomer for low platinum and high performance PEMFCs

open access: yesElectrochemistry Communications
Proton exchange membrane fuel cells (PEMFCs) should further reduce the platinum consumption to lower their manufacturing costs and life-cycle carbon emissions.
Weitao Gao   +8 more
doaj   +1 more source

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