Results 71 to 80 of about 83,496 (259)
Thermodynamic ground states of platinum metal nitrides [PDF]
, 2008 The thermodynamic stabilities of various phases of the nitrides of the platinum metal elements are systematically studied using density functional theory.
H. K. Moffat +4 more
core +2 more sources
Crystal Structure of [Sr(SeC2H)2(NH3)2], Solved and Refined From Powder X‐Ray Diffraction Data
Zeitschrift für anorganische und allgemeine Chemie, EarlyView.The synthesis and crystal structure of [Sr(SeC2H)2(NH3)2] are described, the first alkaline earth metal compound with the recently discovered –SeC2H anion. The title compound releases NH3 even under ambient conditions, so its crystal structure had to be determined from moderately resolved X‐ray powder diffraction data.
Lisa Körtgen +2 more
wiley +1 more source
Unusual Compression Behavior of Columbite TiO2 via First-Principles Calculations [PDF]
, 2010 The physical mechanisms behind the reduction of the bulk modulus of a high-pressure cubic TiO2 phase are confirmed by first-principles calculations.
Dong, Xiao +5 more
core +1 more source
Acta Geologica Sinica - English Edition, EarlyView.ABSTRACT The Jinqingding gold deposit in eastern Jiaodong is a significant gold mineralization within the Muping–Rushan metallogenic belt. This study integrates structural analysis and trace element geochemistry of sulphides to elucidate ore‐controlling mechanisms and metallogenic models.
Xiaohu Wang +10 more
wiley +1 more source
Archaeometry, EarlyView.ABSTRACT The hillfort of Castrejón de Capote is one of the best investigated settlements of Late Iron Age southwest Iberia. Located in the territory that the classical sources attributed to the Celtici, it was occupied between the early 4th and the 1st centuries bce.
Beatrijs de Groot +2 more
wiley +1 more source
Ferric chloride leaching of the Delta sulfide ores and gold extraction from the leaching residue [PDF]
, 1988 Conventional differential and bulk flotation processes have difficulties in achieving high recoveries with acceptable grades far zinc, lead and copper from the complex sulfide ores found at Tok, Alaska.
Lin, H.K., Rao, P.D.
core
Influence of Ca2+ and Mg2+ on Pyrite Flotation at Different Slurry Temperatures
Kuangchan zonghe liyongThis is an article in the field of mineral processing engineering. Through single mineral flotation test, solution chemistry calculation, Zeta potential detection, XPS detection, the influence and regulation mechanism of Ca2+ and Mg2+ on the flotation of
Xin WANG +4 more
doaj +1 more source
The Material Basis of 18th‐Century Meissen Porcelain
Archaeometry, EarlyView.ABSTRACT In the summer of 1708, the quest for making hard‐paste porcelain from Saxonian clay and other mineral resources succeeded. This was achieved by applying as its essential ingredient newly discovered pure kaolin from Heidelsberg near Aue, western Saxon Ore Mountains.
Robert B. Heimann
wiley +1 more source
Chemical Engineering Journal AdvancesAs the most prevalent metal sulfide mineral in mining environments, pyrite readily undergoes oxidation under surface conditions to generate acid mine drainage, resulting in a series of environmental pollution issues.
Junwei Zhang +6 more
doaj +1 more source
Early Bronze Age Copper Circulation in the Guadalentín and Segura Valleys (SE Spain)
Archaeometry, EarlyView.ABSTRACT Identifying the sources of copper used in Early Bronze Age metalwork from south‐east Spain is key to resolving a long‐running debate concerning centralized control, or lack thereof, over El Argar society's economic organisation. This study provides the first substantial integrated programme of EDXRF and MC‐ICP‐MS analyses for copper‐base ...
Dirk Brandherm, Ignacio Montero‐Ruiz
wiley +1 more source