Results 31 to 40 of about 2,230 (139)

Substrate‐Affinitive P‐Type Azapolycyclic Photosensitizer for Chemoselective Nitrilization Under Mild Conditions

Advanced Science, Volume 13, Issue 36, 29 June 2026.
We developed a series of quinoxalinoquinoxaline (QQ) photosensitizers featuring high and tunable excited‐state reduction potentials (E(PC•+/PC*) = –1.76 to –2.05 V vs. SCE). Their hydrogen‐bonding interaction with carbonyl substrates enables selective single‐electron transfer events for selective nitrilization of 1° amides, offering a tunable ...
Seongwoo Bae, Dongwook Kim, Jinwoo Kim
wiley   +1 more source

Shock Acceleration in the Intracluster Medium: Implications of Micromirror Confinement

The Astrophysical Journal
Merging galaxy clusters exhibit strong observational evidence for efficient particle acceleration in the intracluster medium (ICM), particularly in the form of synchrotron-emitting radio relics and halos. Cosmic-ray (CR) electrons are likely accelerated (
Rebecca Diesing, Ludwig M. Böss, Damiano Caprioli   +2 more
doaj   +1 more source

Sustainable Livestock Decisions in a Post‐Conflict Frontier: Evidence From Colombia's Orinoquía

Journal of Agricultural Economics, Volume 77, Issue 2, Page 304-319, June 2026.
ABSTRACT The Orinoquía region is one of Colombia's principal agricultural frontiers and has been shaped by long‐standing armed‐conflict dynamics that continue to influence land governance, producer incentives, and investment decisions. Efforts to promote sustainable cattle production emphasize two key practices: sustainable pasture management ...
Hernando Flórez‐Díaz, Emiliano Lopez Barrera, Adriana María Molina‐Romero, Diana Elisa Correa‐Pinilla, Carlos Fontanilla‐Díaz   +4 more
wiley   +1 more source

Merger-driven Turbulence and Coherent Transport in the Intracluster Medium

The Astrophysical Journal
The distribution of metals and temperature in the intracluster medium (ICM) provides key insights into galaxy cluster evolution, revealing information about chemical enrichment and heating and cooling processes, respectively.
Yiwei Zhang, Xun Shi, Daisuke Nagai
doaj   +1 more source

Deep Synoptic Array Science: Two Fast Radio Burst Sources in Massive Galaxy Clusters

The Astrophysical Journal Letters, 2023
The hot gas that constitutes the intracluster medium (ICM) has been studied at X-ray and millimeter/submillimeter wavelengths (Sunyaev–Zel’dovich effect) for decades.
Liam Connor, Vikram Ravi, Morgan Catha, Ge Chen, Jakob T. Faber, James W. Lamb, Gregg Hallinan, Charlie Harnach, Greg Hellbourg, Rick Hobbs, David Hodge, Mark Hodges, Casey Law, Paul Rasmussen, Jack Sayers, Kritti Sharma, Myles B. Sherman, Jun Shi, Dana Simard, Jean Somalwar, Reynier Squillace, Sander Weinreb, David P. Woody, Nitika Yadlapalli, The Deep Synoptic Array team   +24 more
doaj   +1 more source

Machine Learning–Driven Insights Into the Self‐Assembly of Gold–Thiolate Nanoclusters

Aggregate, Volume 7, Issue 5, May 2026.
A machine‐learned atomistic potential, trained by data from density‐functional theory calculations on thiolate‐protected gold nanoclusters, is applied to investigate cluster–cluster reactions in 0.1 µs timescale molecular dynamics simulations. Starting from a few experimentally known cluster stoichiometries and structures, the simulations show a ...
Maryam Sabooni Asre Hazer, Hannu Häkkinen   +1 more
wiley   +1 more source

Galaxy Cluster Outskirts from the Thermal SZ and Non-Thermal Synchrotron Link

Galaxies, 2016
Galaxy cluster merger shocks are the main agent for the thermalization of the intracluster medium and the energization of cosmic ray particles in it. Shock propagation changes the state of the tenuous intracluster plasma, and the corresponding signal ...
Kaustuv Basu, Jens Erler, Martin Sommer, Franco Vazza, Dominique Eckert   +4 more
doaj   +1 more source

Histidine Protonation and the Oxidizing Power of the Oxygen‐Evolving Complex

ChemPhotoChem, Volume 10, Issue 5, May 2026.
Protonation of D1‐His337 governs the oxidizing power of the Mn4CaO5 cluster in photosystem II. Its singly protonated form is unstable, resulting in histidine oxidation and disruption of Mn oxidation, whereas the doubly protonated form is stable and upshifts the cluster redox potential, enabling efficient water oxidation.
Keisuke Saito, Hiroshi Ishikita
wiley   +1 more source

Machine Learning‐Driven Classification and Production Capacity Prediction of Tight Sandstone Reservoirs: A Case Study of the Taiyuan Formation, Ordos Basin

Energy Science &Engineering, Volume 14, Issue 5, Page 2514-2538, May 2026.
On the basis of core and log data, a Bayesian‐Optimized Random Forest model achieved 92.76% accuracy in classifying tight sandstone reservoirs. A gray relational analysis‐derived evaluation index shows > 80% consistency with actual gas zones. ABSTRACT Tight sandstone gas (TSG), an unconventional oil–gas resource, has heterogeneous reservoirs ...
Yin Yuan, Haijiao Fu, Detian Yan, Gang Wang, Shuguang Yang, Mengmeng Liu, Qingling Jiang, Xiaoming Wang, Wei Wang   +8 more
wiley   +1 more source

Role of Anharmonicity and Bimetallic Intermixing in the IR and Raman Spectra of Cun$_{n}$ and Pdn$_{n}$Cu6−n$_{6-n}$ Clusters (n<7$n\lt 7$). Ab Initio Benchmarking of DFT

Small Structures, Volume 7, Issue 5, May 2026.
High‐level ab initio and density functional theory calculations reveal a structural and spectroscopic transition from pla nar Cu6 to three‐dimensional Pd6, whose lowest energy triplet state undergoes a Jahn‐Teller distortion. This evolution from molecule‐like to metal‐like bonding produces distinct infrared and Raman fingerprints, providing reliable ...
Katarzyna M. Krupka, Alexander O. Mitrushchenkov, María Pilar de Lara‐Castells   +2 more
wiley   +1 more source