Results 41 to 50 of about 1,206,922 (429)

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

Drilling and completion technologies for deep carbonate rocks in the Sichuan Basin: Practices and prospects

Natural Gas Industry B, 2020
The exploration and development of oil and gas resources in the Sichuan Basin is shifting to the deeper strata. The deep and ultra-deep wells in deep carbonate gas reservoirs are faced with many difficulties, such as multiple pressure systems, poor ...
Xianzhu Wu, Fulei Wan, Zuo Chen, Liexiang Han, Zhilin Li   +4 more
doaj  

Produção de sulfato de amônio duplamente marcado com os isótopos estáveis 15N e 34S Production of ammonium sulfate doubly labeled with the 15N and 34S stable isotopes

Química Nova, 2005
The purpose of this work was the production of ammonium sulfate double labeled with 15N and 34S ((15NH4)2(34)SO4)), employing the ion exchange technique in two different processes. The first one was carried out using Na2(34)SO4 and (15NH4)2SO4 previously
Everaldo Maximo, José Albertino Bendassolli, Paulo César Ocheuze Trivelin, Alexssandra Luiza Rodrigues Molina Rossete, Claudinéia Raquel de Oliveira, Clelber Vieira Prestes   +5 more
doaj   +1 more source

Co-fertilization of Sulfur and Struvite-Phosphorus in a Slow-Release Fertilizer Improves Soybean Cultivation

Frontiers in Plant Science, 2022
In face of the alarming world population growth predictions and its threat to food security, the development of sustainable fertilizer alternatives is urgent. Moreover, fertilizer performance should be assessed not only in terms of yield but also in root
Stella F. Valle, Stella F. Valle, Amanda S. Giroto, Gelton G. F. Guimarães, Kerstin A. Nagel, Anna Galinski, Jens Cohnen, Nicolai D. Jablonowski, Caue Ribeiro   +8 more
doaj   +1 more source

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

Ab initio calculation of the potential energy surface for the dissociation of H_2 on the sulfur covered Pd(100) surface [PDF]

, 1997
The presence of sulfur atoms on the Pd(100) surface is known to hinder the dissociative adsorption of hydrogen. Using density-functional theory and the full-potential linear augmented plane-wave method, we investigate the potential energy surface (PES) of the dissociative adsorption of H_2 on the sulfur covered Pd(100) surface.
arxiv   +1 more source

Seasonal changes in microbial dissolved organic sulfur transformations in coastal waters [PDF]

, 2020
The marine trace gas dimethylsulfide (DMS) is the single most important biogenic source of atmospheric sulfur, accounting for up to 80% of global biogenic sulfur emissions.
Dixon, Joanna L., Hopkins, Frances E., Schäfer, Hendrik, Stephens, John A.   +3 more
core   +1 more source

Density Functional Theory Insights into Conduction Mechanisms in Perovskite-Type RCoO₃ Nanofibers for Future Resistive Random-Access Memory Applications

Molecules
In the era of artificial intelligence and Internet of Things, data storage has an important impact on the future development direction of data analysis.
Quanli Hu, Hanqiong Luo, Chao Song, Yin Wang, Bin Yue, Jinghai Liu   +5 more
doaj   +1 more source

Ammoniacal Carbonate Leaching: Effect of Dissolved Sulfur in the Distillation Operation

Acta Chimica Slovenica, 2020
The distillation process in the Ammoniacal Carbonate Leaching technology was studied at bench-scale and on industrial scale. The dissolved sulfur effect in the Product-liquor that feeds to the columns, on the Basic Nickel Carbonate (BNC) properties and ...
Armando Rojas Vargas, María Elena Trujillo Nieves, Yudith González Diaz   +2 more
doaj   +1 more source

Microbial community dynamics and coexistence in a sulfide-driven phototrophic bloom [PDF]

, 2020
© The Author(s), 2020. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Bhatnagar, S., Cowley, E. S., Kopf, S. H., Pérez Castro, S., Kearney, S., Dawson, S. C., Hanselmann, K.
Bhatnagar, Srijak, Castro, Sherlynette Pérez, Cowley, Elise S, Dawson, Scott C, Hanselmann, Kurt, Kearney, Sean, Kearney, Sean Michael, Kopf, Sebastian H, Pérez Castro, Sherlynette, Ruff, S. E   +9 more
core   +1 more source