Results 151 to 160 of about 75,961 (279)

Toward Efficient and Reliable Chemical Upgrading Using Solid Oxide Electrochemical Reactors, Mechanisms, Challenges, and Design Principles

Small, Volume 22, Issue 27, 14 May 2026.
Solid oxide electrochemical reactors (SOERs) offer a compelling pathway for coupling renewable electricity with chemical manufacturing, but their real application is still limited by low efficiency and instability. This review systematically summarizes SOER reaction mechanisms, performance‐limiting factors, and recent progress toward high‐efficiency ...
Nai Shi, Yun Xie, Moses Oludayo Tadé, Zongping Shao   +3 more
wiley   +1 more source

Einstein metrics on flag manifolds [PDF]

, 2006
Evandro C. F. dos Santos, Caio J. C. Negreiros   +1 more
openalex  

Isotropic quasi-Einstein manifolds [PDF]

, 2019
Miguel Brozos‐Vázquez, Eduardo García‐Río, X. Valle-Regueiro   +2 more
openalex   +1 more source

Homogeneous Einstein manifolds based on symplectic triple systems [PDF]

, 2020
Cristina Draper
openalex   +1 more source

Active Particles in Tunable Compressible Environments

Small Science, Volume 6, Issue 5, May 2026.
Gold‐capped active microparticles powered by electric fields plough their way through a matrix of repulsive spheres, shoveling them aside. At high densities and field strengths, an initial strong direction fluctuation may compress the matrix asymmetrically and lead to an asymmetric reaction favoring sustained turns to the same side (spontaneous ...
Venkata Manikantha Sai Ganesh Tanuku, Isha Malhotra, Lorenzo Caprini, Hartmut Löwen, Thomas Palberg, Ivo Buttinoni   +5 more
wiley   +1 more source

Novel Theorems on Spacetime Admitting Pseudo-W2 Curvature Tensor

Journal of Mathematics
This paper investigates spacetime manifolds admitting a pseudo-W2 curvature tensor. We show that a pseudo-W2 flat spacetime is an Einstein manifold and therefore has constant curvature.
B. B. Chaturvedi, Prabhawati Bhagat, Mohammad Nazrul Islam Khan   +2 more
doaj   +1 more source

NULL SASAKI η-EINSTEIN STRUCTURES IN FIVE MANIFOLDS [PDF]

, 2009
Jaime Cuadros Valle
openalex  

Impact Plasma Amplification of the Ancient Mercury Magnetic Field

Journal of Geophysical Research: Planets, Volume 131, Issue 5, May 2026.
Abstract Spacecraft measurements of Mercury indicate that it has a core dynamo with a surface field of 200–800 nT. These data also indicate that the northern hemisphere crust contains remanent magnetization likely produced by an ancient magnetic field. The inferred magnetization intensity is consistent with a wide range of paleofield strengths (0.2–50 ...
Isaac S. Narrett, Rona Oran, Yuxi Chen, Katarina Miljković, Gábor Tóth, Catherine L. Johnson, Benjamin P. Weiss   +6 more
wiley   +1 more source

The spectrum of an asymptotically hyperbolic Einstein manifold [PDF]

, 1995
John M. Lee
openalex   +1 more source

Living by the lake: Plant food diversity in a prehistoric lake‐dwelling community in the Republic of North Macedonia

Archaeometry, Volume 68, Issue S2, Page S47-S68, May 2026.
Abstract This paper explores the relationship between wetland ecosystems and prehistoric lakeshore settlements within the Lake Ohrid basin (a biodiversity hotspot) by considering plant food systems at Ploča Mičov Grad, North Macedonia. The mid‐fifth millennium (c.4555–4373 to 4437–4241 cal BCE) waterlogged assemblage contained a diverse spectrum of ...
Amy Holguin, Michael Charles, Ferran Antolín, Rachel Ballantyne, Müge Ergun, Albert Hafner, Stefanie Jacomet, André F. Lotter, Goce Naumov, Johannes Reich, Raül Soteras, Elizabeth Stroud, Willy Tinner, Rachel Wood, Amy Bogaard   +14 more
wiley   +1 more source