Results 41 to 50 of about 701,199 (312)

Elemental Abundances of Blue Compact Dwarfs from mid-IR Spectroscopy with Spitzer [PDF]

, 2007
We present a study of elemental abundances in a sample of thirteen Blue Compact Dwarf (BCD) galaxies, using the $\sim$10--37$\mu$m high resolution spectra obtained with Spitzer/IRS.
Bernard-Salas, J., Brandl, B. R., Charmandaris, V., Hao, Lei, Houck, J. R., Lebouteiller, V., Wu, Yanling   +6 more
core   +4 more sources

Niobium Complexes Supported by Chalcogen-Bridged [OEO]-Type Bis(phenolate) Ligands (E = S, Se): Synthesis, Characterization, and Phenylacetylene Polymerization

Molecules, 2023
Trichloro niobium(V) complexes 3 and 4 with the sulfur- or selenium-bridged [OEO]-type bis(phenolate) ligands (E = S, Se) were synthesized and fully characterized on the basis of their NMR spectroscopic data and X-ray crystallographic analysis.
Jing An, Akihiko Ishii, Norio Nakata
doaj   +1 more source

Wormholes propagation for fractured-vuggy formation: Laboratory tests, numerical simulation and field application

Petroleum, 2017
The propagation of wormhole is vital important for matrix acidizing and acid fracturing in carbonate reservoirs. While the formation of acid dissolved wormhole is derived from heterogeneous physical and chemical transportations and reactions.
Fei Liu, Yu Sang, Nanxing Xie, Li Li, Li Ran, Weihua Chen   +5 more
doaj   +1 more source

Polyhedral Dicobaltadithiaboranes and Dicobaltdiselenaboranes as Examples of Bimetallic Nido Structures without Bridging Hydrogens

Molecules, 2023
The geometries and energetics of the n-vertex polyhedral dicobaltadithiaboranes and dicobaltadiselenaboranes Cp2Co2E2Bn−4Hn−4 (E = S, Se; n = 8 to 12) have been investigated via the density functional theory. Most of the lowest-energy structures in these
Amr A. A. Attia, Alexandru Lupan, Robert Bruce King   +2 more
doaj   +1 more source

Solid state lithiation-delithiation of sulphur in sub-nano confinement: a new concept for designing lithium-sulphur batteries. [PDF]

, 2016
We investigate the detailed effects and mechanisms of sub-nano confinement on lithium-sulfur (Li-S) electrochemical reactions in both ether-based and carbonate-based electrolytes.
Bozhilov, Krassimir N, Fu, Chengyin, Guo, Juchen, Wong, Bryan M   +3 more
core   +1 more source

The Fluoride Anion-Catalyzed Sulfurization of Thioketones with Elemental Sulfur Leading to Sulfur-Rich Heterocycles: First Sulfurization of Thiochalcones [PDF]

Molecules, 2021
Fluoride anion was demonstrated as a superior activator of elemental sulfur (S8) to perform sulfurization of thioketones leading to diverse sulfur-rich heterocycles. Due to solubility problems, reactions must be carried out either in THF using tetrabutylammonium fluoride (TBAF) or in DMF using cesium fluoride (CsF), respectively.
Grzegorz Mlostoń, Jakub Wręczycki, Katarzyna Urbaniak, Dariusz M. Bieliński, Heinz Heimgartner   +4 more
openaire   +4 more sources

Large sulfur isotope fractionations in Martian sediments at Gale crater [PDF]

, 2017
Variability in the sulfur isotopic composition in sediments can reflect atmospheric, geologic and biological processes. Evidence for ancient fluvio-lacustrine environments at Gale crater on Mars and a lack of efficient crustal recycling mechanisms on the
AS Yen, C Freissinet, CK Shearer, DL Eldridge, DT Vaniman, F-Y Leung, GR Osinski, H Ohmoto, HB Franz, HB Franz, HB Franz, I Halevy, IN Bindeman, J Farquhar, J Farquhar, J Parnell, J Savarino, JP Greenwood, JP Greenwood, JP Greenwood, JP Grotzinger, KA Farley, KM Stack, M Nachon, O Abramov, RRI Seal, S Chakraborty, SA Benner, SP Schwenzer, SP Schwenzer, SS Johnson, T Ding   +31 more
core   +1 more source

Sulfur loss from subducted altered oceanic crust and implications for mantle oxidation [PDF]

, 2020
© The Author(s), [year]. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Walters, J. B., Cruz-Uribe, A. M., & Marschall, H. R.
Cruz‐Uribe, Alicia M., Marschall, Horst R., Walters, Jesse B.   +2 more
core   +1 more source

Influence of impurities contained in fuel and air on sulfide corrosion of turbine blades of the gas turbine engine

Научный вестник МГТУ ГА, 2023
In the process of improving gas turbine engines (GTE), increasing the resource and efficiency, there is a constant increase in temperature and pressure of the working fluid.
V. M. Samoylenko, G. T. Paschenko, E. V. Samoylenko, A. A. Gnezdilova   +3 more
doaj   +1 more source

Chemical and Enzymatic Changes of Different Soils during Their Acidification to Adapt Them to the Cultivation of Highbush Blueberry

Agronomy, 2020
Although there has been an increase in the cultivation of highbush blueberry (Vaccinium corymbosum L.) worldwide for several years now, the availability of suitable soils for this species remains a problem.
Ireneusz Ochmian, Karolina Kozos, Anna Jaroszewska, Ryszard Malinowski   +3 more
doaj   +1 more source