Results 31 to 40 of about 134,760 (296)
Separations, 2021 Capillary electrophoresis (CE) is an effective technique for the separation of different analytes. Moreover, online preconcentration of trace analytes in the capillary for CE analysis has been demonstrated.
Yen-Chun Chen +3 more
doaj +1 more source
The physics of streamer discharge phenomena [PDF]
, 2020 In this review we describe a transient type of gas discharge which is commonly called a streamer discharge, as well as a few related phenomena in pulsed discharges.
Ebert, Ute +2 more
core +3 more sources
Critical Velocity Ionization in Substellar Atmospheres [PDF]
The Astrophysical Journal, 2019 Abstract The observation of radio, X-ray, and H α emission from substellar objects indicates the presence of plasma regions and associated high-energy processes in their surrounding envelopes.
Wilson, A.D. +3 more
openaire +1 more source
Ionization in atmospheres of brown dwarfs and extrasolar planets. IV. The effect of cosmic rays [PDF]
, 2013 Cosmic rays provide an important source for free electrons in Earth's atmosphere and also in dense interstellar regions where they produce a prevailing background ionization. We utilize a Monte Carlo cosmic ray transport model for particle energies of 10(
Helling, Christiane, Rimmer, Paul
core +2 more sources
Applications of ambient ionization mass spectrometry in 2020: An annual review
Analytical Science Advances, 2021 Recent developments in mass spectrometry (MS) analyses have seen a concerted effort to reduce the complexity of analytical workflows through the simplification (or removal) of sample preparation and the shortening of run‐to‐run analysis times.
Stephanie Rankin‐Turner +1 more
doaj +1 more source
Novel ionization reagent for the measurement of gas-phase ammonia and amines using a stand-alone atmospheric pressure gas chromatography (APGC) source. [PDF]
, 2020 RationaleContaminants present in ambient air or in sampling lines can interfere with the target analysis through overlapping peaks or causing a high background. This study presents a positive outcome from the unexpected presence of N-methyl-2-pyrrolidone,
Finlayson-Pitts, Barbara J +3 more
core +1 more source
Atmosphere, 2023 A new gas inlet port combined with a novel ionization scheme have been developed and coupled to a high-resolution time-of-flight mass spectrometer (TOF MS) for the detection and measurement of atmospheric volatile (VOCs) and intermediate volatility ...
Christos Kaltsonoudis +8 more
doaj +1 more source
Superluminous supernovae: No threat from Eta Carinae [PDF]
, 2007 Recently Supernova 2006gy was noted as the most luminous ever recorded, with a total radiated energy of ~10^44 Joules. It was proposed that the progenitor may have been a massive evolved star similar to eta Carinae, which resides in our own galaxy at a ...
Adrian L. Melott +5 more
core +1 more source
Ionization effect of solar particle GLE events in low and\ middle atmosphere [PDF]
Atmospheric Chemistry and Physics, 2011 Using a new reconstruction of the solar proton energy spectra for Ground Level Enhancement (GLE) events, based on fits to measurements from ground-based and satellite-borne instruments covering a wide energy range, we quantitatively evaluate the possible
I. G. Usoskin +4 more
doaj +1 more source
Vacuum Ultraviolet Photoionization Mass Spectrometry and Its Wide Applications in Atmospheric Chemistry [PDF]
Zhipu Xuebao, 2023 Atmosphere is a complex mixture system including various gaseous molecules and particulate matters as well as free radicals. The cases of atmospheric pollution often occur in urban or suburban areas during the evolution of industry, and have adverse ...
WEN Zuo-ying +4 more
doaj +1 more source