Results 1 to 10 of about 519,650 (267)

Ion Channel Trafficking: Control of Ion Channel Density as a Target for Arrhythmias? [PDF]

open access: yesFrontiers in Physiology, 2017
The shape of the cardiac action potential (AP) is determined by the contributions of numerous ion channels. Any dysfunction in the proper function or expression of these ion channels can result in a change in effective refractory period (ERP) and lead to
Elise Balse, Hannah E. Boycott
doaj   +5 more sources

Seasonal Variations in Ion Density, Ion Temperature, and Migrating Tides in the Topside Ionosphere Revealed by ICON/IVM

open access: yesRemote Sensing, 2023
Based on the plasma parameters measured by the Ion Velocity Meter (IVM) instrument on the Ionospheric Connection Explorer (ICON) satellite from 2020 to 2021, we present an analysis of seasonal variations in ion density, ion temperature, and migrating ...
Zheng Ma   +5 more
doaj   +3 more sources

Statistical Research on Seismo-Ionospheric Ion Density Enhancements Observed via DEMETER

open access: yesAtmosphere, 2022
In this paper, in order to investigate the correlation between seismic activity and ionospheric density variation, nighttime ion density (Ni) data from IAP onboard the Detection of Electro-Magnetic Emissions Transmitted from Earthquake Regions (DEMETER ...
Lin Zheng   +8 more
doaj   +1 more source

Preliminary Analysis of Ionospheric Anomalies before Strong Earthquakes in and around Mainland China

open access: yesAtmosphere, 2022
The aims of the present study were to use Langmuir Probe payload electron density data and Plasma Analyzer Package payload O+ density data from the Zhangheng-1 electromagnetic satellite to statistically analyze anomalies in electron and oxygen ion ...
Binbin Zhao   +7 more
doaj   +1 more source

Analysis of Pre-Earthquake Ionospheric Anomalies in the Japanese Region Based on DEMETER Satellite Data

open access: yesUniverse, 2023
The electron density (Ne), ion density (Ni), and electron temperature (Te) statistics recorded by the DEMETER satellite payload ISL (Instrument Sonde de Langmuir) were used to study the disturbance characteristics of the ionosphere before solid ...
Jingming Lu   +5 more
doaj   +1 more source

Two Types of Martian Magnetotail Current Sheets: MAVEN Observations of Ion Composition

open access: yesGeophysical Research Letters, 2023
Using measurements from the Mars Atmosphere and Volatile EvolutioN mission, we investigate the densities of H+ (nH+), O+ (nO+), and O2+ (no2+), respectively, in the Martian magnetotail current sheet.
X. Z. Li   +8 more
doaj   +1 more source

The Ionospheric Plasma Perturbations before a Sequence of Strong Earthquakes in Southeast Asia and Northern Oceania in 2018

open access: yesRemote Sensing, 2023
From August to October 2018, a series of strong earthquake (EQ) events occurred in southeast Asia and northern Oceania (22°S to 0°N, 115°E to 170°E) within 50 days.
Dapeng Liu   +8 more
doaj   +1 more source

A stable local density functional approach to ion-ion correlations [PDF]

open access: yesEurophysics Letters (EPL), 2000
We propose a new approach for incorporating counterion correlations into Poisson-Boltzmann–like theories, which is based on a local density functional for the system of counterions. Our derivation is inspired by the Debye-Huckel approach to the one-component plasma (OCP). An artificial instability due to the OCP's homogeneous background charge—which is
Barbosa, M., Deserno, M., Holm, C.
openaire   +2 more sources

Ion density deviations in semipermeable ionic microcapsules [PDF]

open access: yesPhysical Chemistry Chemical Physics, 2015
Semipermeability of charged polyelectrolyte shells to polyions influences local ion concentrations, affecting performance of fluorescent dye-loaded microcapsules as biosensors.
Tang, Qiyun, Denton, Alan R.
openaire   +3 more sources

Measurement system for ion beam profiles using fixed parallel wires and Faraday cup array

open access: yesAIP Advances, 2022
The radial profiles of ion current density are measured using a combination of two techniques—fixed parallel wires and a Faraday cup array—in a ring cusp ion source. These measurements are carried out for Ar+ ion beam current in the range of 20–90 mA and
Bharat Singh Rawat   +4 more
doaj   +1 more source

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