Results 161 to 170 of about 139,472 (275)

Reasonable drilling angle and technology application for pre-cracking thick-hard roofs before driving gob-side roadways in ultra-thick seams. [PDF]

Sci Rep
He F, Wu Y, Wang D, Zhang J, Tao K.
europepmc   +1 more source

Golemo Gradište at Konjuh: An Unidentified Late Antique City and Its Churches

, 2013
This article provides an overview of the city as we saw it in 2008.
Snively, Carolyn S.
core  

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

Structural model of hard overburden shell in thick coal seam and its application. [PDF]

Sci Rep
Fu X, Zeng L, Rong H, Zhang H, Liu T, Song J.   +5 more
europepmc   +1 more source

Energy requirement for the production of silicon solar arrays [PDF]

Photovoltaics is subject of an extensive technology assessment in terms of its net energy potential as an alternate energy source. Reduction of quartzite pebbles, refinement, crystal growth, cell processing and panel building are evaluated for energy ...
Lindmayer, J., Morrison, A. D., Scheinne, A., Wihl, M.   +3 more
core   +1 more source

Thorncliffe Formation: A proglacial to subglacial lacustrine basin sequence, Greater Toronto Region, Canada

Boreas, EarlyView.
Map of Lower sediment (LS) thickness is a surrogate for the distribution of Thorncliffe Formation (TF) and ~75% of TF thickness from the slope of Niagara Escarpment east to Brighton. Inset images show the LS sequence at the Don Valleys brickyards (DVBY) and undeformed TF sand and gravel (~15 m) below Newmarket Till (NT) at sites L and Co.
David R. Sharpe, Charles E. Logan, Ross D. Knight, Andre J.‐M. Pugin   +3 more
wiley   +1 more source

Analysis and control of gas blowout accidents in working faces beneath thick magmatic rock. [PDF]

Sci Rep
Ma S, Su Y, Wang X, Guo B, Zhang S, Li H.   +5 more
europepmc   +1 more source

Revised classification of glaciofluvial landforms in the Finnish sector of the Fennoscandian Ice Sheet

Boreas, EarlyView.
Effective and sustainable land use, conservation, and the use of geological resources (incl. raw materials, aggregates and groundwater) require a clear classification system of sedimentary units, with well‐defined vocabulary and unified mapping practices.
Jussi Hovikoski, Jukka‐Pekka Palmu, Tapio Väänänen, Markus Valkama, Antti E. K. Ojala, Satu Putkinen, Reijo Pitkäranta   +6 more
wiley   +1 more source

Disaster causing mechanism and monitoring of dynamic and static load coupling of deep multi layer hard roof. [PDF]

Sci Rep
Fu X, Zeng L, Rong H, Zhang H, Liu T, Song J.   +5 more
europepmc   +1 more source

Self‐help and Volunteerism in Tanzania in the 1960s: Voluntary Labour, Nation Building and Constructing Modernity

Development and Change, EarlyView.
ABSTRACT The United Nations has declared 2026 the International Year of Volunteers for Sustainable Development. Against that backdrop, this article examines the experience of volunteerism, and specifically self‐help voluntary labour in Tanzania in the early colonial period, to explore the place of volunteerism in the construction of the post‐colonial ...
Michael Jennings
wiley   +1 more source