Results 21 to 30 of about 212,000 (313)

The Crystal Structure of Bornite Cu₅FeS₄: Ordered Fe and Split Cu

Crystals, 2021
The crystal structure of bornite with ideal formula Cu5FeS4 from the Saishitang skarn copper deposit in Qinghai Province, along with bornite from the Yushui spouting hydrothermal copper deposit in Guangdong Province and the Bofang sandstone copper ...
Zhengxiang Shu, Can Shen, Anhuai Lu, Xiangping Gu, Zhongfa Liu   +4 more
doaj   +1 more source

The Electrical Properties of Calcium Sulfide Doped with Lanthanum Sulfide and Zirconium Sulfide [PDF]

Bulletin of the Chemical Society of Japan, 1985
Abstract Calcium sulfides doped with tri- and tetravalent metal sulfides were prepared. Their electromotive forces (EMF) were measured on a galvanic cell(Fe+FeS| Solid Electrolyte| Cu+Cu2S) where the solid electrolyte was a material in a CaS–Ln2S3–MS2 system.
Gin-ya Adachi, Nobuhito Imanaka, Mineo Sato, Jiro Shiokawa   +3 more
openaire   +1 more source

Fatores que governam a especiação do cobre em ambientes aquáticos urbanos: evidências da contribuição de sulfetos solúveis Factors governing copper speciation in urban freshwaters: evidences on the contribution of soluble sulfides

Química Nova, 2007
Copper speciation and behavior in different rivers located in the city of Curitiba were evaluated in this work. Sampling locations were selected to cover different levels of urbanization regarding their anthropogenic occupation and land use.
Elizabeth W. Scheffer, Fernando F. Sodré, Marco T. Grassi   +2 more
doaj   +1 more source

Characterization of lacustrine iron sulfide particles with proton-induced X-ray emission. [PDF]

, 1992
Black particles, collected by filtration (1.2~pm pore size) from the anoxic waters of a soft-water lake, were examined by a scanning proton microprobe which permitted quantitative elemental analysis by proton-induced X-ray emission (PIXE) and Rutherford ...
GRIME, GW, WOOF, C, Grime, G. W., C. Woof, Woof, C., W. Davison, DAVISON, W, G. W. Grime, Davison, W.   +8 more
core   +1 more source

Finding the Right Blend: Interplay Between Structure and Sodium Ion Conductivity in the System Na5AlS4–Na4SiS4

Frontiers in Chemistry, 2020
The rational design of high performance sodium solid electrolytes is one of the key challenges in modern battery research. In this work, we identify new sodium ion conductors in the substitution series Na5-xAl1-xSixS4 (0 ≤ x ≤ 1), which are entirely ...
Sascha Harm, Sascha Harm, Anna-Katharina Hatz, Anna-Katharina Hatz, Christian Schneider, Carla Hoefer, Constantin Hoch, Bettina V. Lotsch, Bettina V. Lotsch, Bettina V. Lotsch   +9 more
doaj   +1 more source

Geophysical and structural survey in copper occurrence located in the northern region of the Camaquã basin (RS)

REM: International Engineering Journal, 2021
The geophysical diagnosis of mineral deposits can be extremely useful in detailing mineralized zones and is a strategy for direct sampling by probing holes for content analysis.
César Augusto Moreira, Henrique Pelorca Carneiro, Matheus Felipe Stanfoca Casagrande, Marcos Eduardo Hartwig, Marco Antonio Fontoura Hansen   +4 more
doaj   +1 more source

Catalyzed and uncatalyzed procedures for the syntheses of isomeric covalent multi-indolyl hetero non-metallides: an account

Beilstein Journal of Organic Chemistry, 2021
Two or more indole molecules tailored to a single non-metal central atom, through any of their C2–7 positions are not only structurally engaging but also constitute a class of important pharmacophores.
Ranadeep Talukdar
doaj   +1 more source

Metatranscriptomic analysis of sulfur oxidation genes in the endosymbiont of Solemya velum

Frontiers in Microbiology, 2011
Thioautotrophic endosymbionts in the Domain Bacteria mediate key sulfur transformations in marine reducing environments. However, the molecular pathways underlying symbiont metabolism and the extent to which these pathways are expressed in situ are ...
Frank eStewart, Oleg eDmytrenko, Edward eDeLong, Colleen eCavanaugh   +3 more
doaj   +1 more source

The rediscovery of a long described species reveals additional complexity in speciation patterns of poeciliid fishes in sulfide springs [PDF]

, 2013
The process of ecological speciation drives the evolution of locally adapted and reproductively isolated populations in response to divergent natural selection.
Palacios, Maura, Michael Tobler, Arias-Rodriguez, Lenin, Tobler Michael, Plath, Martin, Voelker Gary, Anton Lamboj (446788), Hannes Lerp (446787), Maura Palacios (446784), Martin Plath (198009), Arias-Rodrigues, Lenin, Johnson, Norman, Eifert Constanze, Michael Tobler (357088), Hannes Lerp, Gary Voelker, Lamboj, Anton, Eifert, Constanze, Lenin Arias-Rodriguez, Anton Lamboj, Tobler, Michael, Plath Martin, Lerp, Hannes, Maura Palacios, Gary Voelker (446789), Arias-Rodriguez Lenin, Constanze Eifert, Lerp Hannes, Lenin Arias-Rodriguez (446785), Palacios Maura, Lamboj Anton, Constanze Eifert (446786), Voelker, Gary, Martin Plath   +33 more
core   +1 more source

Estudo da adsorção de hidrogênio e sulfeto na superfície de paládio: aspectos experimentais (eletroquímica) e teóricos (ab initio e Teoria do Funcional da Densidade) Experimental (electrochemistry) and theoretical (ab initio and Density Functional Theory) studies of hydrogen and sulfide adsorption on palladium (100) surface

Química Nova, 2001
The adsorption of H and S2- species on Pd (100) has been studied with ab initio, density-functional calculations and electrochemical methods. A cluster of five Pd atoms with a frozen geometry described the surface.
Antônio Carlos D. Ângelo, Aguinaldo R. de Souza, Nelson H. Morgon, Júlio R. Sambrano   +3 more
doaj   +1 more source