Results 41 to 50 of about 4,244,479 (353)

Dynamic ion-ion and water-ion interactions in ion channels

open access: yesBiophysical Journal, 1992
The dynamic interactions among ions and water molecules in ion channels are treated based on an assumption that ions at binding sites can be knocked off by both transient entering ions and local water molecules. The theory, when applied to a single-site model K+ channel, provides solutions for super- and subsaturations, flux-ratio exponent (n') greater
openaire   +2 more sources

Intramolecular ring-to-ring proton transfer in gaseous ([omega]-phenylalkyl)benzenium ions [PDF]

open access: yes, 1979
Kuck D, Bäther W, Grützmacher H-F. Intramolecular ring-to-ring proton transfer in gaseous ([omega]-phenylalkyl)benzenium ions. Journal of the American Chemical Society.
Bäther, Wolfgang   +2 more
core   +1 more source

Multi-color diamond-saw-diced channel Pr,Gd:LiYF4 waveguide laser [PDF]

open access: yesEPJ Web of Conferences
Ridge low loss (0.16±0.02 dB/cm) waveguides were fabricated in Pr,Gd:LiYF4 epitaxial layers by precision diamond-saw dicing. The red waveguide laser generated 504 mW at 639.7 nm with a slope efficiency of 57.8%, a linear polarization and a laser ...
Demaimay Jonathan   +8 more
doaj   +1 more source

Solvolyses of diarylmethyl chlorides. A comprehensive stability scale for diarylcarbenium ions [PDF]

open access: yes, 1988
Eleven donor substituted diarylmethyl chlorides have been solvolyzed in ethanol. The rate constants, determined at 25°C, and additional ethanolysis data taken from the literature have been connected with solvolvsis rate constants, determined in other ...
Schade, Christian   +3 more
core   +1 more source

Isotope dependence of the Zeeman effect in lithium-like calcium

open access: yesNature Communications, 2016
In addition to hyperfine splitting effects, isotope shifts of atomic electronic energy levels allow the investigation nuclear properties. Here, the authors study the isotope dependence of the Zeeman effect in litihium-like calcium isotopes in a Penning ...
Florian Köhler   +16 more
doaj   +1 more source

Characterization of Vagus Nerve Stimulation (VNS) Dose-Dependent Effects on EEG Power Spectrum and Synchronization

open access: yesBiomedicines
This study investigates the dose-dependent EEG effects of Vagus Nerve Stimulation (VNS) in patients with drug-resistant epilepsy. This research examines how varying VNS intensities impacts EEG power spectrum and synchronization in a cohort of 28 patients.
Enrique Germany Morrison   +6 more
doaj   +1 more source

Effect of the doping level on the 2.8-µm laser performance of Er3+:CaF2 crystals [PDF]

open access: yesEPJ Web of Conferences
The effect of doping level (0.1-10 at.%) on mid-infrared laser performance of Er:CaF2 crystals was investigated. The Er:CaF2 laser delivered 1.17 W at 2798 nm with 35.8% slope efficiency and was tuned across 2690-2830 nm.
Jambunathan Venkatesan   +7 more
doaj   +1 more source

Unusual fragmentation of 1,1,2,2,3,3-hexamethylindan. Methyl group equilibration and multi-step skeletal rearrangements in the [M - CH3]+ ions prior to the formation of t-C4H9+ and other fragment ions [PDF]

open access: yes, 1992
Kuck D, Mehdizadeh A. Unusual fragmentation of 1,1,2,2,3,3-hexamethylindan. Methyl group equilibration and multi-step skeletal rearrangements in the [M - CH3]+ ions prior to the formation of t-C4H9+ and other fragment ions.
Kuck, Dietmar, Mehdizadeh, Ahmad
core   +1 more source

Intramolecular Reaction of Transient Phosphenium and Arsenium Ions Giving Rise to Isolable 9‐Phospha‐ and 9‐Arsena‐Fluorenium Ions [PDF]

open access: yes, 2020
Transient phosphenium and arsenium ions, generated by fluoride abstraction from bis(m-terphenyl)fluoropnictogens, underwent intramolecular electrophilic attack prior to methyl group migration and gave rise to isolable 9-phospha- and 9-arsena-fluorenium ...
Yannik Naß   +11 more
core   +2 more sources

VUV/EUV ionising radiation and atoms and ions: dual laser plasma investigations [PDF]

open access: yes, 2004
The interaction of ionising radiation with atoms and ions is a key fundamental process. This report concentrates on studies of photoexcitation/photoionisation using laser-produced plasmas as continuum sources and synchronised laser plasma plumes to ...
Costello, John T.   +3 more
core   +1 more source

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