Results 21 to 30 of about 80,006 (331)
Sedimentary characteristics and development model of Cambrian gypsum-salt rocks, Tarim Basin
Shiyou shiyan dizhi, 2021 The Cambrian gypsum-salt rocks in the Tarim Basin are key geological elements to the pre-salt play typical marine evaporites, yet little attention has been paid to this set of evaporites.
Qi FAN +5 more
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Frontiers in Earth Science, 2022 Based on the 4 measured profiles, 17 observation profiles, and 13 drilling core macroscopic and microscopic characteristics of the Cambrian Longwangmiao Formation in the Sichuan Basin, combined with analysis and testing, and reservoir logging ...
Qiang Wang +3 more
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A modified trap design for sampling subterranean habitats for central Texas Eurycea salamanders [PDF]
Subterranean BiologyIn this paper, we describe modifications to a sampling technique for surface, stream-dwelling salamanders for use in subterranean settings. Leaf litter bags are an effective and commonly used trap for salamanders, and their construction purposefully ...
Ryan M. Jones +3 more
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Current Biology, 2015 The sudden appearance of fossils that marks the so-called 'Cambrian explosion' has intrigued and exercised biologists since Darwin's time. In On the Origin of Species, Darwin made it clear that he believed that ancestral forms 'lived long before' their first fossil representatives.
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New artiopodan euarthropods from the Chengjiang fauna (Cambrian, Stage 3) at Malong, Yunnan, China [PDF]
Acta Palaeontologica Polonica, 2023 The artiopodans, consisting of trilobites and their relatives, were a major euarthropod group in the Paleozoic. Since the first discovery of Naraoia from the Chengjiang fauna, a significant number of artiopodans have been subsequently found in China ...
Yuyan Zhu +3 more
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, 2017 We introduce permutrees, a unified model for permutations, binary trees, Cambrian trees and binary sequences. On the combinatorial side, we study the rotation lattices on permutrees and their lattice homomorphisms, unifying the weak order, Tamari ...
Pilaud, Vincent, Pons, Viviane
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Journal of the European Mathematical Society, 2009 For a finite Coxeter group W and a Coxeter element c of W, the c -Cambrian fan is a coarsening of the fan defined by the ...
Reading, Nathan, Speyer, David E
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Accessing Heart Health: A Northern Experience
Online Journal of Rural Nursing and Health Care, 2011 Background and Research Purpose: Coronary heart disease (CHD) continues to be a major cause of death and disability across the globe. Regional differences in CHD exist throughout Canada, including Ontario. It is important to explore the complex interplay
Katherine Timmermans +6 more
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Brick polytopes, lattice quotients, and Hopf algebras [PDF]
, 2017 This paper is motivated by the interplay between the Tamari lattice, J.-L. Loday's realization of the associahedron, and J.-L. Loday and M. Ronco's Hopf algebra on binary trees.
Pilaud, Vincent
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