Results 121 to 130 of about 8,343 (262)

Altermagnetismus und neue Chancen für die Spintronik: Das Beste aus zwei Welten

Physik in unserer Zeit, EarlyView.
Sie gelten als die Zukunft der Spintronik: Altermagnete kombinieren die Vorzüge von Ferro‐ und Antiferromagneten, was lange Zeit als physikalisch unvereinbar galt. Der Grund für dieses Potential liegt in ihrer spezifischen Symmetrie. Zusammenfassung Klassisch werden magnetische Materialien in Ferromagnete (parallele Spins) und Antiferromagnete ...
Sonka Reimers, Martin Jourdan, Mathias Kläui   +2 more
wiley   +1 more source

Entropie im Erdsystem: Wie das Klimasystem arbeitet

Physik in unserer Zeit, EarlyView.
Bei den Energieumwandlungen der Erde ist die Entropie immer mit dabei. Wie ein Kompass bestimmt sie dabei die Richtung, sie setzt Leistungsgrenzen, die Klima formen und erneuerbare Energien begrenzen. Zusammenfassung Entropie setzt Grenzen, wenn Energie umgewandelt und Arbeit geleistet wird – so wie bei Wärmekraftmaschinen und Kraftwerken.
Axel Kleidon
wiley   +1 more source

Enhancing Tea Agrifood System Resilience Amid Geopolitical Tensions: A Resource Nexus‐Based System Dynamics Analysis

Sustainable Development, EarlyView.
ABSTRACT Geopolitical conflicts are increasingly threatening global food security, economic stability, and peace, impacting Tanzania's tea agrifood system. This study develops a quantitative Resource Nexus‐based system dynamics simulation model assessing the feedbacks and interdependencies among key environmental and socioeconomic resources shaping ...
Ally Mkumbukiy, Daniel Mgori, Edeltraud Guenther, Kaveh Madani   +3 more
wiley   +1 more source

What Management Control Practices Do Electric Utilities Rely on When It Comes to Fostering the Social Pillar of Sustainability? A Comparative Analysis of the European Union and the United States

Sustainable Development, EarlyView.
ABSTRACT Electric utilities are expected to implement measures to improve their performance in all three dimensions of sustainable development—environmental, social, and economic. While several studies have investigated the environmental dimension, measures related to the social pillar have hardly been researched to date.
Shekerta Aliu, Albert Anton Traxler, Dorothea Greiling   +2 more
wiley   +1 more source

Perovskite‐Based Catalysts for the Oxygen Evolution Reaction: Synthesis, Device Relevant Performance, and Scale‐Up Strategies

Small, EarlyView.
Perovskites are emerging as catalysts for acidic oxygen evolution in proton exchange membrane water electrolyzers. This manuscript focuses on catalyst behavior under device‐relevant conditions, highlighting surface reconstruction, elemental utilization, and membrane electrode assembly performance. By linking materials design with electrolyzer operation,
Jala Bib Khan, Norbert Kazamer, Marco Brand, Tim Hülser, Clemens Pollerberg, Ulrich Rost   +5 more
wiley   +1 more source

Engineering Cobalt‐Based Thin Films for Fischer–Tropsch Synthesis

Small, EarlyView.
Cobalt thin films with tailored crystalline phases and oxidation states serve as well‐defined model Fischer–Tropsch catalysts. In situ synchrotron GIXRD reveals distinct reduction behaviour and phase evolution, while catalytic testing demonstrates phase‐dependent hydrocarbon selectivity and improved structural stability. These model thin‐film catalysts
Muhammad Hamid Raza, Avela Kunene, Alexander Steigert, Athanasios Skaltsogiannis, Catalina E. Jiménez, Florian Ruske, Ali Shan Malik, René Schwiddessen, Judith Helena Mettke, Johannes Frisch, Regan G. Wilks, Erik Reichelt, Marcus Bär, Rutger Schlatmann, Daniel Amkreutz   +14 more
wiley   +1 more source

Ionic Liquids at the Interface With the Transition Metal Dichalcogenide MoS2: Effect of the Chemical Structure on Induced Charge Carrier Density

Small, EarlyView.
Ionic liquid gating of MoS2 channels using [EMIM][TFSI] or [EMIM][BF4] can lead to different carrier densities. [TFSI]‐based systems exhibit steeper voltage decay (compared to [BF4]‐based systems) meaning the potential drops more rapidly across the electric double layer, indicating stronger local electric fields and more efficient charge accumulation ...
Anoir Hamdi, Iréné Amiehe Essomba, Kana Ishisone, Kerstin Falk, Michael Moseler, Ramin Karimi Azari, Tian Lan, Clara Santato, Mauro Boero, Guido Ori, Emanuele Orgiu   +10 more
wiley   +1 more source

ENERGIE UND UMWELT '96

Technikfolgenabschätzung – Theorie und Praxis, 1995
TATuP Redaktion
doaj   +1 more source

Interplay of Aquatic and Riparian Variables in Two Anthropogenically-Influenced Small Stream Catchments. [PDF]

Arch Environ Contam Toxicol
Feckler A, Stehle S, Beisel JN, Chanez E, Joschko TJ, Roodt AP, Schmidt T, Schreiner VC, Schulz R, Staentzel C, Schirmel J.   +10 more
europepmc   +1 more source

Das Jahrhundert der Energie

Technikfolgenabschätzung – Theorie und Praxis, 2010
Eberhard Umbach
doaj   +1 more source