Results 31 to 40 of about 240,536 (298)

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

Methylammonium antimony sulfide [PDF]

Acta Crystallographica Section C Crystal Structure Communications, 2005
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Rachel J E, Lees, Anthony V, Powell, Ann M, Chippindale   +2 more
openaire   +2 more sources

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

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

cis,trans,cis-1,2,3,4-Tetrakis[2-(ethylsulfanyl)phenyl]cyclobutane

IUCrData, 2016
The title cyclobutane derivative, C36H40S4, formed serendipitously through a photochemically initiated [2 + 2] cycloaddition. The asymmetric unit contains half a molecule with the 2-(ethylsulfanyl)phenyl substituents in a cis configuration, the other ...
Barbara Sohr, Florian Glöcklhofer, Berthold Stöger, Matthias Weil, Johannes Fröhlich   +4 more
doaj   +1 more source

Microbial attachment to sulfide minerals in a bioleach environment [PDF]

, 2009
Includes bibliographical references (leaves 119-125).This research pertains to bioleaching of copper containing ores with particular reference to the copper sulfide mineral chalcopyrite (CuFeS₂).
Africa, Cindy-Jade
core   +1 more source

Exploration of the Hydrogen Sulfide—Germanium Sulfide System.

ChemInform, 2004
AbstractFor Abstract see ChemInform Abstract in Full Text.
Sutherland, Jacob, Poling, Steven, Belin, Renaud, Martin, Steve   +3 more
openaire   +3 more sources

Optimization of factors affecting on sulfide oxidation from synthetic spent caustic by Haloalkaliphilic Thioalkalivibrio versutus by focus on sodium ion effect: Application of response surface methodology [PDF]

Iranian Journal of Chemical Engineering, 2017
In the present study, the effects of four factors including initial sulfide concentration (mg l-1 ), agitation speed (rpm), amount of inoculums (%) and sodium concentration (mg l-1) on removal efficiency (%R) and yield of sulfate production by ...
H. kalantari, M. Nosrati, S. A Shojaosadati, M. Shavandi   +3 more
doaj  

Sulfur Cave (Romania), an extreme environment with microbial mats in a CO2-H2S/O2 gas chemocline dominated by mycobacteria

International Journal of Speleology, 2018
Sulfur Cave (Puturosu Mountain, Romania) is an extreme environment, unique for displaying life in a gas chemocline. The lower part of the cave is filled with CO2, CH4, and H2S of mofettic origin, while the upper part contains air that floats above the ...
Serban M. Sarbu, Joost W. Aerts, Jean-François Flot, Rob J.M. Van Spanning, Calin Baciu, Artur Ionescu, Boglárka M. Kis, Reka Incze, Sándor Sikó-Barabási, Zoltan Para, Botond Hegyeli, Nicu-Viorel Atudorei, Casey Barr, Kenneth Nealson, Ferenc L. Forray, Cristian Lascu, Emily J. Fleming, Wilbert Bitter, Radu Popa   +18 more
doaj   +1 more source