Results 81 to 90 of about 45,698 (227)
Organic Hop Variety Trial: Results from Year Five [PDF]
, 2015 Hops production continues to increase throughout the the Northeast. While hops were historically grown in the Northeast, they have not been commercially produced in this region for over a hundred years.
Calderwood, Lily +7 more
core +1 more source
Comparative Microstructure Characteristics of Synthesized PbS Nanocrystals and Galena
SciLead sulfide (PbS) on the nanoscale was synthesized via a chemical route at room temperature using lead nitrate {Pb(NO3)2} and sodium sulfide (Na2S). The Na2S was prepared at ~105 °C using sodium hydroxide (NaOH) and sulfur (S) powder.
Ehab AlShamaileh +6 more
doaj +1 more source
Kuangchan zonghe liyongBased on fluorescence spectrum analysis and chemical multi-element analysis, through the process mineralogy study of a refractory lead-zinc mine in Hebei, the mineral composition, structure, main mineral embedding characteristics of the ore and the ...
Guanglin QIN
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A short historical overview on the use of lead [PDF]
, 2018 This historical introduction to the use of lead in art and technology was originally written to give context to lead conservation studies by the authors.
Adriaens, Mieke +2 more
core +1 more source
Estudios Geologicos, 1984 El distrito de F-(Pb, Zn, Ba) de la Sierra de Baza (al SE de España) está constituido fundamentalmente por mineralizaciones estratiformes y estratoligadas de fluorita-(galena), enclavadas en niveles carbonatados del Ladiniense Superior-Carniense.
J. Torres-Ruiz, F. Delgado
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Post-depositional tectonic modifications of VMS deposits in Iberia and its economic significance [PDF]
, 2011 The original stratigraphic relationships and structure of VMS deposits are commonly obscured by deformation. This can also affect their economic significance, as shown by several Iberian Pyrite Belt (IPB, SW Iberia) examples.
Castroviejo Bolibar, Ricardo +2 more
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The Geologic Features of the Occurrence of Copper in North America [PDF]
, 1933 Copper is of such widespread natural occurrence in North America and there are so few metal-mining districts that have not contributed to its production that it is obviously necessary in any brief general treatment of the geology of the copper deposits ...
Ransome, F. L.
core
Mineralogical, textural, structural and geochemical aspects of Nakhlak lead mine, Isfahan
Journal of Economic Geology, 2011 Nakhlak lead mine is located at the Nakhlak mountain 55 km NE of Anarak town in Isfahan province. The mineralogy is simple; galena and barite are the main primary minerals and cerussite is the main secondary mineral.
Mohammad Ali Jazi, Jamshid Shahabpour
doaj +1 more source
Economic Feasibility of North Slope Propane Production and Distribution to Select Alaska Communities [PDF]
, 2010 Could propane from Alaska’s North Slope reduce energy costs for electric utilities and residential space heating, water heating, and cooking demands? We explored the hypothesis that propane is a viable alternative for fourteen selected communities along ...
Fay, Ginny, Schwörer, Tobias
core
Research Status and Prospect of Flotation Separation of a Copper-lead Sulfide Ore
Kuangchan zonghe liyongThe separation of copper and lead is one of the technical difficulties in complex sulfide ore beneficiation. On the basis of analyzing the general situation of copper-lead sulfide ore resources and the characteristics of mineral composition, this paper ...
Ruikang WANG +3 more
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