Results 81 to 90 of about 7,697 (253)

Eocene animal trace fossils in 1.7-billion-year-old metaquartzites. [PDF]

Proc Natl Acad Sci U S A, 2021
Bengtson S, Rasmussen B, Zi JW, Fletcher IR, Gehling JG, Runnegar B.   +5 more
europepmc   +1 more source

Dual Impact of Long‐Lived Localized Carriers Induced by Restricted Hole Transfer in Organic Photovoltaics and Photocatalytic Hydrogen Evolution

Advanced Energy Materials, EarlyView.
This work clarifies why organic semiconductors perform differently in photovoltaic devices and photocatalytic nanoparticles. By examining D18:Y5 and PM6:Y6 systems, we show how aggregation, exciton lifetime, and interfacial charge transfer behavior govern energy‐conversion pathways.
Gayoung Ham, Sanghyeok An, Wooteak Jung, Hyun Min Kwon, Seonghyeon Kang, Jaehyuk Lee, Sowon Kim, Changwoo Park, Damin Lee, Young Yong Kim, Sungjin Jo, Chang Yun Son, Sae Byeok Jo, Dae Sung Chung, Hyojung Cha   +14 more
wiley   +1 more source

Metal‐free Hydrogen Generation from Seawater and Silicon Waste: A Circular Approach

Angewandte Chemie, EarlyView.
Hydrogen was rapidly generated directly from untreated seawater and polymeric Si waste without any transition metal catalyst. The in situ generated polymeric cross‐linked Si resin was completely depolymerized under mild conditions into chloro‐silane monomers.
Mustapha Hamdaoui, Anja Steinmaurer, Philipp Jernej, Daniel Legenstein, Peter Hartmann, Adrian Daniel Boese, Katalin Barta   +6 more
wiley   +2 more sources

Trace Fossils on Oceanic Volcanic Islands of Macaronesia: Current State of Knowledge

Journal of Marine Science and Engineering
Ichnological research on trace fossils from the volcanic islands of Macaronesia (North Atlantic) is reviewed in light of significant advances over the past two decades.
Alfred Uchman
doaj   +1 more source

The demosponge Leptomitus cf. L. lineatus, first occurence from the Middle Cambrian of Spain (Murero Formation, Western Iberian Chain)

Geologica Acta, 2003
The Middle Cambrian Murero Formation in the Iberian Chain (NE Spain) has yielded a small collection of softbodied fossils (palaeoscolecid worms, onychophorans, algae), a host of fossils from organisms with mineralized skeletons such as trilobites and ...
Diego García-Bellido Capdevila
doaj   +1 more source

Were the First Trace Fossils Really Burrows or Could They Have Been Made by Sediment-Displacive Chemosymbiotic Organisms? [PDF]

Life (Basel), 2022
McIlroy D.
europepmc   +1 more source

Built‐In Electric Field Regulated Electron Transport Channels of FeP Supported Os for Ampere‐Level Seawater Electrolysis

Advanced Energy Materials, EarlyView.
This work presents an Os/FeP heterostructure catalyst with EMSI and successfully utilizes the BEF to further modulate electron transfer through Os‐P‐Fe channels, proving an effective approach of developing low‐cost electrocatalysts with remarkable HER activity in ampere‐level seawater electrolysis. ABSTRACT Developing cost‐effective and robust hydrogen
Qing Liu, Yukun Zhang, Zili Liu, Yu Wang, Hongdong Li, Weiping Xiao, Wenli Yu, Lingfeng Zhu, Tianyi Ma, Jun Xing, Wei Jin, Liqun Ye, Lei Wang, Zexing Wu   +13 more
wiley   +1 more source

Analysis of the trace fossils from Paleogene formations of the Central Western Carpathian (Orava region)

, 2016
Up to now only little attention was dedicated to the study of the trace fossils in the development of the Central Carpathian Paleogene Basin in the Orava region.
Simo, V., Starek, D.
core   +1 more source

Changes in the composition of trace fossil assemblages across the Paleocene–Eocene transition in the north-western Tethys (Untersberg section, Austria)

Geologica Carpathica, 2019
The Untersberg section (Northern Calcareous Alps, Austria) provides an expanded and biostratigraphically well constrained deep-sea record of the Paleocene–Eocene transition in the north-western Tethyan realm.
Uchman Alfred, Egger Hans, Rodríguez-Tovar Francisco J.   +2 more
doaj   +1 more source

On the Economics of US Agricultural Policy

Applied Economic Perspectives and Policy, EarlyView.
ABSTRACT This paper presents an economic analysis of US agricultural policy, building on a modified version of Gardner's efficient redistribution. We argue that agricultural policy is motivated as an attempt to implement an efficient redistribution scheme that redistributes income toward farmers who, as a group, have been adversely affected by ...
Jean‐Paul Chavas
wiley   +1 more source