Results 191 to 200 of about 119,952 (305)

The economic foundations of powersharing: Evidence from Africa

American Journal of Political Science, EarlyView.
Abstract How—and with whom—do rulers share power? Existing research focuses on the strategic logic of powersharing. In this paper, we analyze its economic foundations. Powersharing is modeled as a subnational fiscal contract, in which rulers allocate political representation based on constituencies’ revenue potential. Empirically, we combine historical
Yannick I. Pengl, Philip Roessler
wiley   +1 more source

Cloud-based slope risk monitoring and early warning system for open-pit coal mines: a case study of Zhonglian Runshi. [PDF]

Sci Rep
Dong X, Li S, Ma R, Tian W, Zhao K, Xiang H, Zhu J, Qiu Y.   +7 more
europepmc   +1 more source

The exploitation of silver deposits in early medieval Europe: some documentary, economic and social problems

Archaeometry, EarlyView.
Abstract Focusing on Southern Europe, this article sheds light on the mining landscape of the early Middle Ages. Based on the current state of historical and archaeological knowledge, the article raises a number of questions that can be extended to other European regions.
Nicolas Minvielle Larousse
wiley   +1 more source

Mine Waste Disasters on the Zambian Copperbelt: Regulatory and Community Concerns. [PDF]

Environ Manage
Mukumba CP, Sishekanu M, Marais L.
europepmc   +1 more source

Soil wetting and drying processes influence stone artefact distribution in clay‐rich soils: A case study from Middle Gidley Island in Murujuga, northwest Western Australia

Archaeometry, EarlyView.
Abstract Soils that contain swelling clay minerals (e.g., montmorillonite) expand and contract during wetting and drying, causing movement within the soil profile. This process, known as argilliturbation, can alter artefact distributions, destroy stratigraphy and complicate the interpretation of archaeological deposits.
Caroline Mather, Matthias Leopold, Kaitlin Sullivan, Kane Ditchfield, Tom Horrocks, Luke Gliganic, Emma Beckett, Diana Patalwala, Emielda Yusiharni, Michael Smirk, William Hiscock, Jo McDonald   +11 more
wiley   +1 more source

Impact of cemented paste backfill on mechanical properties and stability of coal pillars in open pit highwall mining. [PDF]

Sci Rep
Han L, Chen X, Chen T, Deng X, Gong T, Tan Z, Shu J.   +6 more
europepmc   +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

Comprehensive enhancement of blasting performance and dust suppression in open-pit mines using a modified mudstone-fly ash geopolymer stemming material. [PDF]

Sci Rep
Ding X, Wang Y, Shi Z, Jiang L, Liu X.
europepmc   +1 more source

Refining the timing of Middle Pleistocene (MIS 12 to MIS 6) ice advances into northern central Europe: sedimentological analysis and single‐grain luminescence dating of glaciotectonic complexes and tunnel‐valley fills

Boreas, EarlyView.
We summarize the current state of knowledge on the age of the Middle Pleistocene ice advances into northern central Europe and provide 25 new single‐grain feldspar luminescence ages of Elsterian and Saalian glacigenic sediments to constrain the age of the ice advances and their tentative correlation with marine isotope stages/substages.
Niklas von Soest, Neda Rahimzadeh, Debra Colarossi, Falko Malis, Tobias Lauer, Wera Sander‐Beuermann, Yvonne Spychala, Christian Brandes, Runa Fälber, Sumiko Tsukamoto, Jutta Winsemann   +10 more
wiley   +1 more source

Seasons and vertical dynamics influence community composition in a flooded and abandoned mica mine. [PDF]

FEMS Microbiol Ecol
Lhoste E, Jaclin D, Ponsin V, Rosabal M, Sara Lazar C.   +4 more
europepmc   +1 more source