Results 11 to 20 of about 1,206,922 (429)

The Curious Conundrum Regarding Sulfur Abundances In Planetary Nebulae [PDF]

open access: yesApJ, 749, 61 (2012), 2012
Sulfur abundances derived from optical emission line measurements and ionization correction factors in planetary nebulae are systematically lower than expected for the objects' metallicities. We have carefully considered a large range of explanations for
Ferland, G. J.   +4 more
core   +4 more sources

A universal chemical potential for sulfur vapours [PDF]

open access: yes, 2015
The unusual chemistry of sulfur is illustrated by the tendency for catenation. Sulfur forms a range of open and closed S$_n$ species in the gas phase, which has led to speculation on the composition of sulfur vapours as a function of temperature and ...
Jackson, Adam J.   +2 more
core   +3 more sources

Photolytic Hazes in the Atmosphere of 51 Eri b [PDF]

open access: yes, 2016
We use a 1D model to address photochemistry and possible haze formation in the irradiated warm Jupiter, 51 Eridani b. The intended focus was to be carbon, but sulfur photochemistry turns out to be important.
Marley, Mark S.   +3 more
core   +4 more sources

First principles simulations of liquid Fe-S under Earth's core conditions [PDF]

open access: yes, 1998
First principles electronic structure calculations, based upon density functional theory within the generalized gradient approximation and ultra-soft Vanderbilt pseudopotentials, have been used to simulate a liquid alloy of iron and sulfur at Earth's ...
A. E. Ringwood   +52 more
core   +3 more sources

Research Progress on CO2 and H2S Corrosion Prediction Models in Sour Gas Field [PDF]

open access: yesCailiao Baohu, 2022
 The corrosion rate prediction models about CO2 corrosion and CO2/H2S coexistence system were summarized, and the modeling ideas, factors considered, limitations of various models were expounded.
WANG Yan - ran, XIAO Jie, FAN Yong - zhao, ZHANG Yin - hui, TIAN Yuan, LI Shan
doaj   +1 more source

Polymer Electrolytes for Lithium-Sulfur Batteries: Progress and Challenges

open access: yesBatteries, 2023
The lithium-sulfur battery has garnered significant attention from both researchers and industry due to its exceptional energy density and capacity. However, the conventional liquid electrolyte poses safety concerns due to its low boiling point, hence ...
Mingxun Jia   +6 more
doaj   +1 more source

The effect of Slow-Release Bolus of Copper on Performance and Some Blood Metabolites of Lori-Bakhtiari Pregnant Ewes and Their Lambs [PDF]

open access: yesپژوهشهای علوم دامی ایران, 2021
Introduction[1] The provision of nutrients during the late gestation not only affects maternal status and reproductive performance, but also affects prenatal and postnatal litter growth and offspring’s health.
Parvin Nasr Chaleshtori   +3 more
doaj   +1 more source

Sulfur gas-phase abundance in dense cores [PDF]

open access: yesA&A 658, A168 (2022), 2021
The abundance of volatile sulfur in dense clouds is long-standing problem in studies of the physics and chemistry of star-forming regions. Sulfur is an important species because its low ionization potential may possibly make it an important charge carrier.
arxiv   +1 more source

Sulfur Reduction Reaction in Lithium–Sulfur Batteries: Mechanisms, Catalysts, and Characterization

open access: yesAdvanced Energy Materials, 2022
Lithium–sulfur batteries are one of the most promising alternatives for advanced battery systems due to the merits of extraordinary theoretical specific energy density, abundant resources, environmental friendliness, and high safety.
Lei Zhou   +6 more
semanticscholar   +1 more source

Research and performance optimization of carbon dioxide foam fracturing fluid suitable for shale reservoir

open access: yesFrontiers in Energy Research, 2023
Compared to conventional fracturing techniques, foam fracturing has numerous advantages, including good shear resistance, strong sand carrying capacity, low fluid loss, low damage, and fast return rates. It is particularly suitable for stimulation in low
Song Li   +8 more
doaj   +1 more source

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