Results 61 to 70 of about 56,332 (307)
Risk, Hazards &Crisis in Public Policy, Volume 16, Issue 4, December 2025.ABSTRACT Background Hazardous levels of contaminants produced by anthropogenic activities are increasingly pervading residential environs and urban areas. Hazardous contamination can pose significant health risks for citizens dwelling in exposure pathways.
Rosina Johnson +3 more
wiley +1 more source
Boletín Geológico, 1990 La región objeto de este estudio se localiza al extremo sur central del Macizo de Santander, cordillera Oriental de Colombia. En una secuencia de sedimentitas del Cretáceo inferior y en posición concordante con la dirección de los estratos, se encuentra
Hernando Mendoza Forero
doaj +1 more source
Dual Role of Fe2+ in the Galena Flotation and Influence on Selective Separation
Adsorption Science & Technology, 2023 Fe ions, as one of the unavoidable metal ions, are present in flotation pulp as ferric and ferrous species, and the effect of ferric species on the flotation behavior of sulfide minerals has been widely discussed in the above literatures.
Bo Yang +3 more
doaj +1 more source
Bullion production in imperial China and its significance for sulphide ore smelting world-wide [PDF]
, 2015 Gold and silver production was of major importance for almost all ancient societies but has been rarely studied archaeologically. Here we present a reconstruction of a previously undocumented technology used to recover gold, silver and lead at the site ...
Chen, J +6 more
core
Levantine Hacksilber and the flow of silver in early Mediterranean commerce
Archaeometry, Volume 67, Issue 6, Page 1547-1564, December 2025.Abstract This study presents a comprehensive approach to provenancing ancient silver artefacts, introducing a novel algorithm to correct for mass‐dependent isotope fractionation. Applied to a Pb isotope database of 281 Hacksilber samples from southern Levantine hoards (1700–600 BCE) and compared with approximately 7000 galena ores from Spain to Iran ...
Francis Albarede +4 more
wiley +1 more source
Lichens of abandoned zinc-lead mines
Acta Mycologica, 2013 A list of lichens from areas of zinc-lead ores in Southern Poland and a review of the characteristic lichen biota of these sites is provided. In spite of the devastated and heavy metal contaminated environment, a highly diverse epigeic and epilithic ...
Urszula Bielczyk +2 more
doaj +1 more source
Fluid Inclusions Usage for Assessing Oil Migration in Duhok, North of Iraq [PDF]
مجلة جامعة الانبار للعلوم الصرفة, 2009 Studies of primary and secondary fluid inclusions were done on epigenetic barite samples which collected from carbonates in Lower part of Sarmord Formation (Lower Cretaceous and Aqra-Bekhme Formations (Upper Cretaceous) in Duhok localities of North of ...
Sahar Y. Jassim +3 more
doaj +1 more source
Molecular Ecology, Volume 34, Issue 24, December 2025.ABSTRACT Humulus lupulus L., commonly known as hop, is a perennial crop grown worldwide and is well known for its pharmacological, commercial, and most importantly brewing applications. For hundreds of years, hop has undergone intense artificial selection, with over 250 cultivated varieties being developed worldwide, all displaying differences in key ...
Alexandra McElwee‐Adame +17 more
wiley +1 more source
Zeitschrift für anorganische und allgemeine Chemie, Volume 651, Issue 16, November 14, 2025.The ultra‐alkaline condition of a hydroflux facilitate the synthesis of a new periodato cuprate(II). Fully deprotonated orthoperiodate octahedra are connected into chains by copper(II) cations. The two modifications differ in the constitution of these chains, which influences the magnetism of the compounds.
Huanyu He, Ralf Albrecht, Michael Ruck
wiley +1 more source