Results 191 to 200 of about 70,537 (294)

Discovery of White Sea assemblage fossils from Laurentia. [PDF]

Sci Adv
Evans SD, Sperling EA, Lau KV, Strauss JV.   +3 more
europepmc   +1 more source

Leaf Fossils

These leaf prints are perfectly preserved in rock as fossils found in the Uintah ...

core  

Ecoefficiency Analysis and Regression in Data Conversion for Spiking Neural Network Training

Advanced Intelligent Systems, EarlyView.
The environmental footprint of spiking neural networks is quantified during dataset encoding and training for autonomous driving regression across three benchmarks. Temporal depth emerges as the dominant driver of energy consumption and CO2 emissions, while the accuracy–energy trade‐off proves dataset‐dependent. On conventional hardware, spiking models
Fernando S. Martínez, Raúl Parada, Jordi Casas‐Roma, Laia Subirats   +3 more
wiley   +1 more source

Electron Bridge Enhanced Charge Polarization Enables Efficient and Ultra‐Long Stable Urea Electrosynthesis

Angewandte Chemie, EarlyView.
An electron bridge strategy is developed to regulate charge polarization in Pd1 and Ni1 dual single‐atom sites, promoting CO2 reduction, nitrate reduction, and C–N coupling simultaneously. The resulting catalyst achieves efficient urea electrosynthesis with high activity and record durability over 1700 h.
Fan Wu, Haixia Wang, Wei Wang, Junrong Zou, Ruijie Zhou, Fenglin Xie, Peng Gao, Weiliu Fan, Nana Wang, Zhongchao Bai, Guoxiu Wang, Wei Ye   +11 more
wiley   +2 more sources

Molecular fossils of an ancestral code revealed by large-scale analysis of tRNAs. [PDF]

Proc Natl Acad Sci U S A
Nova Royo A, Martín-Cabezas P, Ovchinnikov S, Schimmel P, Ribas de Pouplana L.   +4 more
europepmc   +1 more source

Trace Fossils

In this activity students study trace fossils, which commonly occur in rocks that do not contain body fossils and may be the only evidence that organisms had once lived in a certain area. They will also learn how sediment type affects fossil preservation
Carl Mendelson, Carol Mankiewicz
core  

Uncovering renewable energy policy impact channels on land values, the local farm structure, and farmland heterogeneity

American Journal of Agricultural Economics, EarlyView.
Abstract Germany's Renewable Energy Sources Act (REA), enacted in 2000 and subsequently amended, subsidized national renewable energy production with fixed feed‐in tariffs for renewable energy sources (RE) from wind, solar, and biogas. Empirical studies suggest that the policy was creating windfall effects for landowners and attribute farmland use ...
Lars Isenhardt, Stefan Seifert, Saskia Wolff, Tobia Lakes, Marten Graubner, Axel Werwatz, Silke Hüttel   +6 more
wiley   +1 more source

Electro‐Organic Synthesis at a Stable Oil/Water/Solid Three‐Phase Interface Reactor

Angewandte Chemie, EarlyView.
A porous membrane electrode (PME) reactor is developed to promote oil/water/solid three‐phase interfacial contact for electro‐organic synthesis. By promoting the formation of an oil/water interfacial region within or near an amphiphilic catalytic layer, the reactor enables efficient conversion of water‐insoluble organic reactants in aqueous ...
Deyin Chen, Jianan Zhu, Huan Wu, Huajun Zheng, Longhao Jiao, Chengpu Chu, Yinghua Xu, Bin Liu   +7 more
wiley   +2 more sources

A 5.3-million-year-old deep-sea whale necropolis in the Diamantina Zone. [PDF]

Nature
Peng X, Zhou P, Song X, Bianucci G, Du M, Collareta A, Gao Z, Xie T, Teng M, Leduc D, Mills S, Ta K, Li J, Wei T, Dasgupta S, Liu H, He Y, Xu W, Liu S, Zhang H.   +19 more
europepmc   +1 more source

The Politics of Framing the Student Problem: Inquiries Into Australian Civics Education, 2006–2024

Australian Journal of Social Issues, EarlyView.
ABSTRACT Recurring debates about civics, the kinds of history that should, and should not, be taught in school, and ‘standards debates’ about the ‘basics’ typically follow on the heels of recurring moral panics about the ‘declining’ state of ‘our’ education system.
Patrick O'Keeffe, Judith Bessant, Madeline Drake   +2 more
wiley   +1 more source