Results 111 to 120 of about 9,419 (241)

Measurements of respirable dust concentrations by using various samplers in underground coal mines

, 1986
The specific etiological factors of coal workers' pneumoconiosis have not yet been fully understood. The prevention of this occupational disease depends upon elimination or suppression of airborne dust to which miners are exposed. The Canada Centre for Mineral and Energy Technology's (CANMET) research on respirable dust in underground coal mines ...
openaire   +1 more source

Palaeoenvironmental and climatic changes from the lateglacial of the Saalian to the Late Weichselian in central Poland: a multiproxy study from Józefów

Boreas, EarlyView.
Józefów site is a case study which provides a detailed record of environmental and climate changes and confirms the main traces of the landscape morphogenesis of the Late Pleistocene established in central‐eastern Europe. This study presents a multiproxy reconstruction of palaeoenvironment under variable climatic conditions from the retreat of the ...
Aleksandra Majecka, Jacek Forysiak, Ryszard Borówka, Andreas Börner, Łukasz Bujak, Leszek Marks, Radosław Mieszkowski, Piotr Moska, Daniel Okupny, Małgorzata Pisarska‐Jamroży, Renata Stachowicz‐Rybka, Krzysztof Stachowicz   +11 more
wiley   +1 more source

Single‐grain K‐feldspar luminescence dating on primary and re‐deposited aeolian sediments in Mongolia

Boreas, EarlyView.
Owing to its location in the semi‐arid region of northern Central Asia, Mongolia is highly sensitive to climate change and therefore provides an excellent setting for palaeoenvironmental research. Proxy data from different sediment types are crucial for interpreting past climate changes and landscape evolution, while burial ages provide chronological ...
Junjie Zhang, Michael Klinge, Sumiko Tsukamoto, Daniela Sauer, Manfred Frechen   +4 more
wiley   +1 more source

Innovation and the great divergence

The Economic History Review, EarlyView.
Abstract Recent historical national accounting data show that the timing of the Great Divergence hinges on the different trends in north‐west Europe and the Yangzi Delta region of China. Although north‐west Europe only pulled ahead of the Yangzi Delta after 1700, both the positive trend of GDP per capita in north‐west Europe after 1700 and the negative
Stephen Broadberry, Runzhuo Zhai
wiley   +1 more source

The Unexpected Discovery of Paleocene? Coals in Outcrops Thought to Be Cambrian, Al Huqf, Oman

Journal of Petroleum Geology, EarlyView.
ABSTRACT Two brown organic deposits were encountered whilst investigating kaolinitic claystones thought to occur at the base of a Cambrian formation at outcrop. The age of these organic deposits is probably Paleocene from palynology. Organic petrography shows that they are subbituminous coals with some oil source potential.
Mohammed H. Al Kindi, Alan P. Heward, Lorraine B. Eglinton, Steve R. Packer, Darrin T. Stead   +4 more
wiley   +1 more source

Coalition Breakdown and Subsystem Exit

Policy Studies Journal, EarlyView.
ABSTRACT Why actors choose to work together (or not) to advance policy has been the central area of inquiry within the Advocacy Coalition Framework (ACF). Existing research has mainly emphasized the pathway towards coalition formation and evolution, underscoring the stable patterns of allies and opponents observable in policy processes over a decade or
Charlie F. Thompson
wiley   +1 more source

Assessing working lands as habitat for disturbance‐dependent birds using autonomous recording units

Restoration Ecology, EarlyView.
Abstract Introduction Working lands can provide habitat for declining disturbance‐dependent birds, such as Bachman's Sparrow (Peucaea aestivalis) and Northern Bobwhite (Colinus virginianus), but it remains unclear whether restoration following intensive land use (e.g. surface mining) yields habitat comparable to less intensive land uses (e.g.
Dan H. Watson, James F. Renner, Elizabeth A. Hunter   +2 more
wiley   +1 more source

Early development of anoxia prior to the main euxinic phase of the Jenkyns Event on the margin of the Western Tethys (Sachrang Basin, Eastern Alps)

Sedimentology, EarlyView.
ABSTRACT Although the global expansion of oxygen‐depleted marine environments during the Early Toarcian Jenkyns Event (or Toarcian Oceanic Anoxic Event) is primarily inferred from successions in the NW European epicontinental basins, the timing of the expansion of anoxia in Tethyan basins, where hydrography potentially played a minor role, is poorly ...
Tamás Müller, Stefan Neumeister, Jan Schlögl, Emanuela Mattioli, Hans‐Jürgen Gawlick, Thomas J. Algeo, Adam Tomašových   +6 more
wiley   +1 more source

Construction of an Anion/Nonionic Complex System to Synergistically Promote the Performance of Dust Suppression. [PDF]

ACS Omega
Wang T, Zhang B, Liu X, Lv J.
europepmc   +1 more source

Study on the synergistic control effect of composite reagent water spray on gas and coal dust. [PDF]

Sci Rep
Zhao B, Xue G, Xiao P, Shuang H, Yan M, Yan D, Chen Z.   +6 more
europepmc   +1 more source