نتایج جستجو برای: polymetallic ore

تعداد نتایج: 10748  

1997

VI.1-HIGH MOLECULAR WEIGHT INORGANIC COMPLEXES Large polymetallic complexes are potentially useful molecules in a variety of areas. Photochemically active compounds are under investigation as efficient photoinitiators for solar-energy conversion, catalysts, and as selective “light-activated anticancer drugs”. On a molecular level, these large organometallic species typically contain light-absor...

Journal: :Geological Quarterly 2023

Seven undeveloped sediment-hosted stratiform Cu-Ag deposits constitute a future resource base of copper and silver ores in the Fore-Sudetic Monocline SW Poland. Among these, four have only recently been discovered documented: Nowa Sól, Sulmierzyce North, Mozów (forming part Northern Copper Belt) Żary. The three remaining – Bytom Odrzański, Głogów Retków surround currently mined New District to ...

Journal: :Frontiers in Earth Science 2023

The Weilasituo-bairendaba district is located at the eastern end of Central Asian Orogenic Belt, which an important component Cu-Pb-Zn polymetallic metallogenic belt on Western slope Greater Xing’an Range in Inner Mongolia, China. known Cu-Zn deposits such as Weilasituo deposit and Bairendaba Ag-Pb-Zn are same tectonic-magmatic product. district’s structure framework consists NE-trending region...

Journal: : 2022

Purpose. To develop techniques for estimating the pit wall stability in terms of occurring a zone heavily jointed rock mass during ore mining at Akzhal deposit (Kazakhstan), to work out measures strengthen opening and verify effectiveness developed measures. Methodology. The finite element analysis stress-strain state is implemented on basis elastic-plastic model generalized Hoek-Brown failure ...

Journal: :Journal of Earth Science 2022

Abstract The Huayangchuan ore belt is located in the western segment of Xiaoqinling Orogen southern margin North China Craton (NCC), and hosts voluminous magmatism significant U?REE?Mo?Cu?Fe polymetallic mineralization. However, geochronological framework various mineralization phases this region poorly understood. Here, we present new Re?Os isochron ages on magnetite from Caotan Fe deposit (2 ...

Journal: :Journal of Nepal Geological Society 2023

Exploration of copper ore in the Nepal Himalayas has been carried out by different researchers at times. The author conducted detailed geological studies and mineral exploration some polymetallic prospects also reviewed literature related to Nepal. present research is able delineate two distinct mineralization belts extending from west east identify promising sites for that could be feasible mi...

2009
Sébastien Clément Laurent Guyard Michael Knorr Viktoria H. Gessner Carsten Strohmann

The title compound, [Fe(C(5)H(5))(C(7)H(5)Cl(2))], represents a versatile building block for the preparation of π-conjugated redox-active compounds or polymetallic organometallic systems due to the presence of the electrochemically active ferrocenyl unit. It is therefore a potential starting material for the preperation of the corresponding alkyne. In the crystal, the alkenyl unit and the cyclo...

2014
D. BURCHART - KOROL

J. Korol, Central Mining Institute, Department of Material Engineering, Poland D. Burchart-Korol, A. Smoliński, Central Mining Institute, Department of Energy Saving and Air Protection, Poland In this study composition of sinter mixtures used in Polish sinter plants were established. Seven sinter mixtures composition were examined, based on iron-bearing materials, admixtures and fuels.

Journal: :Metals 2021

Through thermodynamic smelting experiments, nonisothermal and isothermal kinetics the effects of CO2–containing gas injection on chromia–bearing vanadiferous titanomagnetite ore were investigated. The experiments at 900 °C, 1000 1100 1200 1300 CO2 concentration 0, 10 vol.%, 20 30 vol.% studied. samples after analyzed through calculations characterized by XRD, XRF, XPS, SEM. results show that si...

2014
Likun Qiu Yue Zhang

Open Relation Extraction (ORE) overcomes the limitations of traditional IE techniques, which train individual extractors for every single relation type. Systems such as ReVerb, PATTY, OLLIE, and Exemplar have attracted much attention on English ORE. However, few studies have been reported on ORE for languages beyond English. This paper presents a syntax-based Chinese (Zh) ORE system, ZORE, for ...

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