Results 21 to 30 of about 75,496 (347)

Hydrogen Drives Part of the Reverse Krebs Cycle under Metal or Meteorite Catalysis

Angewandte Chemie International Edition, Volume 61, Issue 51, December 19, 2022., 2022
Hydrogen is a geological reducing agent that powers the metabolisms of modern organisms and potentially also powered the metabolism of the last universal common ancestor to all extant life. It is shown that catalytic amounts of transition metals or small amounts of powdered meteorites allow hydrogen to drive a key sequence of the reverse Krebs cycle ...
Sophia A. Rauscher, Joseph Moran
wiley   +1 more source

The SPICE carbon isotope excursion in Siberia: a combined study of the upper Middle Cambrian-lowermost Ordovician Kulyumbe River section, northwestern Siberian Platform [PDF]

, 2008
An integrated, high-resolution chemostratigraphic (C, O and Sr isotopes) and magnetostratigraphic study through the upper Middle Cambrian–lowermost Ordovician shallowmarine carbonates of the northwestern margin of the Siberian Platform is reported. The
Bengtson, S, Gallet, Y, Korovnikov, I, Kouchinsky, A, Pavlov, V, Runnegar, B, Shields, G, Veizer, J, Young, E, Ziegler, K   +9 more
core   +3 more sources

Miaolingian (Cambrian) trilobite biostratigraphy and carbon isotope chemostratigraphy in the Tingskullen drill core, Öland, Sweden [PDF]

Estonian Journal of Earth Sciences, 2021
The Cambrian succession of the Tingskullen drill core from northern Öland comprises Cambrian Series 2 and Miaolingian (Wuliuan Stage) siliciclastic strata.
Per Ahlberg, Frans Lundberg, Mikael Calner, Oliver Lehnert, Peter Dahlqvist, Michael M. Joachimski   +5 more
doaj   +1 more source

LITHOLOGICAL AND FACIAL FEATURES, COMPOSITION, AND SEDIMENTATION CONDITIONS OF TERRIGENOUS-CARBONATE ROCKS OF THE MOTY GROUP (SHAMAN CLIFF, IRKUTSK REGION)

Геодинамика и тектонофизика, 2021
We have studied terrigenous-carbonate rocks in the area near the Sayan mountains in the Irkutsk Region (Russia), specifically at the Shaman Cliff, being the stratotype area of rocks that belong to the Moty group.
Z. L. Motova, A. V. Plyusnin, E. V. Nikulin   +2 more
doaj   +1 more source

Popular political attitudes in Samoa: Findings of the Pacific Attitudes Survey

Asia &the Pacific Policy Studies, Volume 9, Issue 3, Page 408-429, September 2022., 2022
Abstract Popular political attitudes surveys have been conducted globally for several decades, but the Pacific region remains an exception. This paper presents the findings of the first Pacific Attitudes Survey (PAS), conducted in Samoa from December 2020‐January 2021.
Michael Leach, Julien Barbara, Ioana Chan Mow, Sina Vaai, Christopher Mudaliar, Patila Amosa, Louise Mataia, Susana Tauaa, Taema Imo, Vernetta Heem   +9 more
wiley   +1 more source

A possible case of inverted lifestyle in a new bivalved arthropod from the Burgess Shale [PDF]

Royal Society Open Science, 2019
The origin of the arthropod carapace, an enlargement of cephalic tergites, can be traced back to the Cambrian period. However, its disparity and evolution are still not fully understood.
Alejandro Izquierdo-López, Jean-Bernard Caron   +1 more
doaj   +1 more source

Geochemistry of the black rock series of lower Cambrian Qiongzhusi Formation, SW Yangtze Block, China: Reconstruction of sedimentary and tectonic environments

Open Geosciences, 2021
The black rock series in the Qiongzhusi Formation contains important geochemical information about the early Cambrian tectonic and ecological environment of the southwestern Yangtze Block.
Liu Hao, Wang Chan, Li Yong, Deng Jianghong, Deng Bin, Feng Yuexing, Chen Hui, Xu Yunlong, Zhao Shaoze   +8 more
doaj   +1 more source

A new Cambrian catillicephalid trilobite from the Shallow Bay Formation of western Newfoundland, Canada [PDF]

Acta Palaeontologica Polonica, 2022
Species of Catillicephala are known from sites around the mid-Cambrian margin of Laurentian North America, including Vermont, Quebec, Newfoundland and North Greenland. Catillicephala cifellii sp. nov.
STEPHEN R. WESTROP, ALYCE A. DENGLER
doaj   +1 more source

A health(y) subject? Examining discourses of health in physical education curricula across the UK

British Educational Research Journal, Volume 48, Issue 6, Page 1161-1182, December 2022., 2022
Abstract In this paper, we present the findings from our critical analysis of the health discourses evident with physical education (PE) curricula in each UK home nation—England, Northern Ireland, Scotland and Wales. We carried out a critical discourse analysis of those curriculum documents that talk directly to PE teachers about how to organise, enact
Shirley Gray, Oliver Hooper, Stephanie Hardley, Rachel Sandford, David Aldous, Julie Stirrup, Nicola Carse, Anna S. Bryant   +7 more
wiley   +1 more source

Politics of evidence: Think tanks and the Academies Act

British Educational Research Journal, Volume 48, Issue 6, Page 1232-1253, December 2022., 2022
Abstract Previous research has identified political ideology as central in the landmark Academies Act (2010). This article further analyses how politics of evidence played its part in the policy process by focusing on long‐term structural changes and preferences among policymakers. The article draws on policymaker interviews after the reform, a mapping
Jaakko Kauko
wiley   +1 more source