Results 51 to 60 of about 1,320,406 (342)

The Possible Role of Penning Ionization Processes in Planetary Atmospheres

open access: yesAtmosphere, 2015
In this paper we suggest Penning ionization as an important route of formation for ionic species in upper planetary atmospheres. Our goal is to provide relevant tools to researchers working on kinetic models of atmospheric interest, in order to include ...
Stefano Falcinelli   +2 more
doaj   +1 more source

Theory of Fluid Instabilities in Partially Ionized Plasmas: An Overview

open access: yesFrontiers in Astronomy and Space Sciences, 2022
Partially ionized plasmas (PIP) are essential constituents of many astrophysical environments, including the solar atmosphere, the interstellar medium, molecular clouds, accretion disks, planet ionospheres, cometary tails, etc., where the ionization ...
Roberto Soler   +3 more
doaj   +1 more source

Possible effect of extreme solar energetic particle events of September–October 1989 on polar stratospheric aerosols: a case study [PDF]

open access: yesAtmospheric Chemistry and Physics, 2013
The main ionization source of the middle and low Earth's atmosphere is related to energetic particles coming from outer space. Usually it is ionization from cosmic rays that is always present in the atmosphere.
I. A. Mironova, I. G. Usoskin
doaj   +1 more source

The Magnetic Memory of Titan's Ionized Atmosphere

open access: yesScience, 2008
After 3 years and 31 close flybys of Titan by the Cassini Orbiter, Titan was finally observed in the shocked solar wind, outside of Saturn's magnetosphere. These observations revealed that Titan's flow-induced magnetosphere was populated by “fossil” fields originating from Saturn, to which the satellite was exposed before its excursion through the ...
Bertucci, Cesar   +11 more
openaire   +3 more sources

An Atmospheric Pressure Ionization MS/MS Assay using Online Extraction for the Analysis of 11 Cannabinoids and Metabolites in Human Plasma and Urine

open access: yesTherapeutic Drug Monitoring, 2017
Background: Although, especially in the United States, there has been a recent surge of legalized cannabis for either recreational or medicinal purposes, surprisingly little is known about clinical dose–response relationships, pharmacodynamic and ...
J. Klawitter   +16 more
semanticscholar   +1 more source

Cell‐cycle‐specific lesion evolution rather than inhibition of double‐strand‐break repair underpins cisplatin radiosensitization

open access: yesMolecular Oncology, EarlyView.
We analyze cisplatin–DNA adducts (CDAs) and double‐strand breaks (DSBs) in a cell‐cycle‐dependent manner. We find that CDAs form similarly across all cell cycle phases. DSBs arise only in S‐phase. CDAs might not directly impair DSB repair, but S‐phase DSB lesions evolve in the presence of CDAs and disrupt repair in G2, also causing radiosensitization ...
Ye Qiu   +10 more
wiley   +1 more source

Molecular dynamics simulations of positively selected codons in FcγRI reveal novel biochemical binding properties

open access: yesFEBS Open Bio, EarlyView.
Evolutionary analysis across 32 placental mammals identified positive selection at residues H148 and W149 in the immune receptor FcγR1. Ancestral reconstruction combined with molecular dynamics simulations reveals how these mutations may influence receptor structure and dynamics, providing insight into the evolution of antibody recognition and immune ...
David A. Young   +7 more
wiley   +1 more source

The influence of galactic cosmic rays on ion-neutral hydrocarbon chemistry in the upper atmospheres of free-floating exoplanets

open access: yes, 2014
The authors highlight financial support of the European Community under the FP7 by an ERC starting grant.Cosmic rays may be linked to the formation of volatiles necessary for prebiotic chemistry.
P. B. Rimmer   +5 more
core   +1 more source

Energetic Electron Precipitation via Satellite and Balloon Observations: Their Role in Atmospheric Ionization

open access: yes, 2023
Information about the energetic electron precipitation (EEP) from the radiation belt into the atmosphere is important for assessing the ozone variability and dynamics of the middle atmosphere during magnetospheric and geomagnetic disturbances.
Vladimir Makhmutov   +4 more
core   +1 more source

Miniaturized atmospheric ionization detector [PDF]

open access: yes, 2018
A small scintillator-based detector for atmospheric ionization measurements has been developed, partly in response to a need for better ionization data in the weather-forming regions of the atmosphere and partly with the intention of producing a ...
Harrison, R. Giles   +5 more
core   +1 more source

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