Results 141 to 150 of about 2,243,376 (370)

The algebraic hull of the Kontsevich-Zorich cocycle [PDF]

open access: yesarXiv, 2017
We compute the algebraic hull of the Kontsevich-Zorich cocycle over any GL^+_2(R) invariant subvariety of the Hodge bundle, and derive from this finiteness results on such subvarieties.
arxiv  

Light‐Driven Ratchet Mechanism Accelerates Regioselective Metal‐Cation Exchange in a Heterobimetallic Helicate

open access: yesAngewandte Chemie International Edition, Accepted Article.
Molecular machines rely on their capacity to exploit non‐equilibrium processes to perform work. However, the development of these non‐equilibrium processes, such as molecular ratchets, is still in its early stages. Here, we report a diazocine‐containing ligand (L) harbouring two distinct chelating coordination sites that can self‐sort into dinuclear ...
Maximilian J. Notheis   +2 more
wiley   +1 more source

Self‐Assembly of a Customizable Library of Nickel Trifluoromethylation Catalysts via Selective C‒F and C‒O Bond Cleavage

open access: yesAngewandte Chemie International Edition, Accepted Article.
Using a combination of metal‐promoted reactivity, in‐situ covalent bond modification, and hydrogen bonding‐promoted fluorine labilization, a unified approach was developed to self‐assemble a library of customizable ligand architectures directly at the nickel center via selective cleavage of C‒F or C‒O bonds and the formation of C‒C or C‒N bonds.
Aleksandr Sorvanov   +5 more
wiley   +1 more source

Using large language models to extract plant functional traits from unstructured text

open access: yesApplications in Plant Sciences, EarlyView.
Abstract Premise Functional plant ecology seeks to understand how functional traits govern species distributions, community assembly, and ecosystem functions. While global trait datasets have advanced the field, substantial gaps remain, and extracting trait information from text in books, research articles, and online sources via machine learning ...
Viktor Domazetoski   +6 more
wiley   +1 more source

Who was the real sabertooth predator: Thylacosmilus or Thylacoleo?

open access: yesThe Anatomical Record, EarlyView.
Abstract Sabertoothed mammalian predators, all now extinct, were almost exclusively feloid carnivorans (Eutheria, Placentalia): here a couple of extinct metatherian predators are considered in comparison with the placental sabertooths. Thylacosmilus (the “marsupial sabertooth”) and Thylacoleo (the “marsupial lion”) were both relatively large (puma ...
Christine M. Janis
wiley   +1 more source

Disparity of turbinal bones in placental mammals

open access: yesThe Anatomical Record, EarlyView.
Abstract Turbinals are key bony elements of the mammalian nasal cavity, involved in heat and moisture conservation as well as olfaction. While turbinals are well known in some groups, their diversity is poorly understood at the scale of placental mammals, which span 21 orders.
Quentin Martinez   +11 more
wiley   +1 more source

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