Results 51 to 60 of about 833,719 (109)

In Situ Microscale Shear Failure Mechanism in Hot Dry Rock Under Thermal Cycling

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 1, January 2026.
Abstract Induced shear failure is key for enhancing hot dry rock (HDR) resource exploitation, aiming to creating an extensive fracture network. Although the macroscopic shear behavior of HDR has been extensively investigated, its microscopic shear failure mechanisms remain unclear.
Bowen Liu, Cunbao Li, Shixin Zhang, Jianjun Hu, Jie Liu, Biao Li, Heping Xie   +6 more
wiley   +1 more source

Possible links between extreme oxygen perturbations and the Cambrian radiation of animals

Nature Geoscience, 2019
The role of oxygen as a driver for early animal evolution is widely debated. During the Cambrian explosion, episodic radiations of major animal phyla occurred coincident with repeated carbon isotope fluctuations.
Tianchen He, Maoyan Zhu, Benjamin J. W. Mills, P. Wynn, A. Zhuravlev, R. Tostevin, Philip A. E. Pogge von Strandmann, Aihua Yang, S. Poulton, G. Shields   +9 more
semanticscholar   +1 more source

Evidence for high organic carbon export to the early Cambrian seafloor

, 2020
Oxygenation of the early Cambrian ocean is commonly ascribed to high organic export to the sediment due to the rise of algae and filter-feeding animals, but direct evidence of elevated export fluxes has been lacking to date. Here, we report an integrated
Cheng Meng, Chao Li, Chengsheng Jin, Haiyang Wang, T. Algeo, T. Lyons, Feifei Zhang, A. Anbar   +7 more
semanticscholar   +1 more source

Localized and Transient Oxygenation of Shallow Oceans of Southwestern Laurentia at the Ediacaran–Cambrian Boundary

Geobiology, Volume 24, Issue 1, January/February 2026.
ABSTRACT The Ediacaran–Cambrian boundary, which precedes one of the most significant biotic diversification events in Earth's history, is associated with a global negative carbon isotope excursion termed the BAsal Cambrian carbon isotope Excursion (BACE).
Watsawan Chanchai, Lyle L. Nelson, Emily F. Smith, Dalton S. Hardisty, Mary C. Lonsdale, Janet E. Burke, Kimberly V. Lau   +6 more
wiley   +1 more source

Plasmonically Enhanced Hydrogen Evolution on Anisotropic AuPt Nanowires with Submonolayer Pt Surface Coverage

Small, Volume 21, Issue 50, December 17, 2025.
Au nanowires decorated with ultralow, submonolayer Pt coverages are demonstrated as efficient plasmonic antenna–reactor systems for the hydrogen evolution reaction (HER) in acidic media. The architecture preserves Au plasmon resonances while maximizing Pt utilization, leading to light‐enhanced catalytic activity.
IbrahiM Abdelsalam, Shiqi Wang, Hugo L. S. Santos, Ella Kitching, Pranava Pakala, Mykhailo Chundak, Mikko Ritala, Sarah J. Haigh, Thomas J. A. Slater, Pedro H. C. Camargo   +9 more
wiley   +1 more source

A new definition for m-Cambrian lattices

The Cambrian lattices, introduced in (Reading, 2006), generalize the Tamari lattice to any choice of Coxeter element in any finite Coxeter group. They are further generalized to the m-Cambrian lattices (Stump, Thomas, Williams, 2015). However, their definitions do not provide a practical setup to work with combinatorially.
Chenevière, Clément, Fang, Wenjie, Henriet, Corentin   +2 more
openaire   +3 more sources

Noncrossing arc diagrams and canonical join representations

, 2015
We consider two problems that appear at first sight to be unrelated. The first problem is to count certain diagrams consisting of noncrossing arcs in the plane. The second problem concerns the weak order on the symmetric group. Each permutation $x$ has a
Reading, Nathan
core   +1 more source

The Qingjiang biota—A Burgess Shale–type fossil Lagerstätte from the early Cambrian of South China

Science, 2019
A treasure trove of Cambrian secrets Animal life exploded in diversity and form during the Cambrian period about 500 million years ago. Fu et al. describe an early Cambrian fossil site in China that contains a variety of specimens, more than half of ...
Dongjing Fu, G. Tong, T. Dai, Wei Liu, Yuning Yang, Y. Zhang, L. Cui, Luoyang Li, Hao Yun, Yu Wu, Ao Sun, Cong Liu, Wenrui Pei, R. Gaines, Xingliang Zhang   +14 more
semanticscholar   +1 more source

Radar Polarimetry in Glaciology: Theory, Measurement Techniques, and Scientific Applications for Investigating the Anisotropy of Ice Masses

Reviews of Geophysics, Volume 63, Issue 4, December 2025.
Abstract Dielectric anisotropy in ice alters the propagation of polarized radio waves, so polarimetric radar sounding can be used to survey anisotropic properties of ice masses. Ice anisotropy is either intrinsic, associated with ice‐crystal orientation fabric (COF), or extrinsic, associated with material heterogeneity, such as bubbles, fractures, and ...
Benjamin H. Hills, T. J. Young, David A. Lilien, Esther Babcock, Nicole Bienert, Donald Blankenship, John Bradford, Giancorrado Brighi, Alex Brisbourne, Jørgen Dall, Reinhard Drews, Olaf Eisen, M. Reza Ershadi, Tamara A. Gerber, Nicholas Holschuh, Daniela Jansen, Thomas M. Jordan, Nanna B. Karlsson, Jilu Li, Carlos Martín, Kenichi Matsuoka, Daniel May, Falk M. Oraschewski, John Paden, Nicholas M. Rathmann, Neil Ross, Dustin M. Schroeder, Martin Siegert, Matthew R. Siegfried, Emma Smith, Ole Zeising   +30 more
wiley   +1 more source

Trilobite evolutionary rates constrain the duration of the Cambrian explosion

Proceedings of the National Academy of Sciences of the United States of America, 2019
Significance The Cambrian explosion was arguably the most important biological event after the origin of life. Extensive research has been devoted to understanding when it began but far less on when this burst of evolution ended.
J. Paterson, G. Edgecombe, Michael S. Y. Lee   +2 more
semanticscholar   +1 more source