Results 81 to 90 of about 156,409 (216)
The Astrophysical JournalModeling the abundance of interstellar complex organic molecules in space is a major challenge for astrophysicists. The relative roles of gas-phase and grain-surface processes in the formation and destruction of such large molecules remain unclear ...
Rosemonde Chahbazian +2 more
doaj +1 more source
Angewandte Chemie, Volume 138, Issue 25, 15 June 2026.By employing dimensionally reduced reaction descriptors, a human–machine collaboration framework for efficient electrochemical nitrate reduction to NH3 electrocatalysts screening is established and drastically shorten the discovery timeframe. A new kinetic model is established in combination with a rotating ring‐disk electrode, unveiling the pivotal ...
Yingying Cheng +3 more
wiley +1 more source
The abundant elements in interstellar dust
The Astrophysical Journal, 1994 We explore the incorporation of the cosmically abundant species O, C, N, Mg, Si, Fe, and S into interstellar dust. Column densities based on Goddard High Resolution Spectrograph 3.5 km/s resolution measurements from the literature for eight individual absorbing regions toward five lines of sight are used.
Ulysses J. Sofia +2 more
openaire +1 more source
abundances-S California 2003.xls
, 2010 Proportional abundances of bivalve species in living and death assemblages sampled on the southern California shelf. Living assemblages are represented by unpublished data from the 1975 BLM-funded survey conducted by Alan Hancock Foundation, which we ...
Adam Tomašových (3244596) +1 more
core +1 more source
The diffuse interstellar features and interstellar relationships [PDF]
, 1990 This thesis describes the results of a survey of the diffuse interstellar features towards about 120 stars. The observations, the data reduction and the measurement of the strengths of the diffuse features are described.
Fossey, Stephen John
core +1 more source
The Deuterium Fractionation of NH3 in Massive Star-forming Regions
The Astrophysical JournalDeuteration is sensitive to environmental conditions in star-forming regions. To investigate NH _2 D chemistry, we compared the spatial distribution of ortho-NH _2 D ${1}_{11}^{s}-{1}_{01}^{a}$ , NH _3 (1,1), and NH _3 (2,2) in 12 late-stage massive star-
Yuqiang Li +8 more
doaj +1 more source
The Definitive Abundance of Interstellar Oxygen
The Astrophysical Journal, 1998 Using the Goddard High Resolution Spectrograph (GHRS) onboard HST, we have obtained high S/N echelle observations of the weak interstellar O I 1356 A absorption toward the stars Gamma Cas, Epsilon Per, Delta Ori, Epsilon Ori, 15 Mon, Tau CMa, and Gamma Ara. In combination with previous GHRS measurements in six other sightlines (Zeta Per, Xi Per, Lambda
Meyer, David M. +2 more
openaire +2 more sources
, 2016 Published in Proceedings of TVIW 2016, February 28-March 2, Chattanooga, TN / David E. Fields and Abby SherriffThe mass ratio problem in interstellar flight presents a major problem.
Jackson, Albert Allen
core
abundances-S California 1975.xls
, 2010 Proportional abundances of bivalve species in living and death assemblages sampled on the southern California shelf. Living assemblages are represented by unpublished data from the 1975 BLM-funded survey conducted by Alan Hancock Foundation, which we ...
Adam Tomašových (3244596) +1 more
core +1 more source
Heating of the low-latitude solar wind by dissipation of turbulent magnetic fluctuations [PDF]
, 2001 We test a theory presented previously to account for the turbulent transport of magnetic fluctuation energy in the solar wind and the related dissipation and heating of the ambient ion population. This theory accounts for the injection of magnetic energy
Matthaeus, William H. +5 more
core +1 more source