Results 91 to 100 of about 14,872 (259)
Potenzial außerschulischer Lernorte zur Förderung transversaler Kompetenzen
CHEMKON, EarlyView.Transversale Kompetenzen wie Kommunikation, Kollaboration, kritisches Denken und Entscheidungsfindung sind zentral für schulischen Erfolg, berufliche Handlungsfähigkeit und gesellschaftliche Teilhabe. Dennoch werden diese Kompetenzen im schulischen Kontext bislang häufig nur niederschwellig gefördert.
Jannis Memmen, Silvija Markic
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Thermodynamische Betrachtungen des Entropieversuchs mit Citronensäure und Natriumcarbonat‐Decahydrat
CHEMKON, EarlyView.Die Gibbs‐Helmholtz‐Gleichung, die spontan aber endotherm ablaufende Reaktionen erklärt, wird oft nur theoretisch besprochen. In diesem Artikel wird an einem schulgängigen Versuch und anhand passender Werte das Ergebnis der Gleichung gezeigt und auf einen konkreten Aufbau angewandt.
Nico Meuter, Claudia Bohrmann‐Linde
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Gamify Your Lab – spieltypische Elemente zur Motivations‐ und Aktivierungssteigerung im Schülerlabor
CHEMKON, EarlyView.Das Projekt „Gamify your Lab“ verbindet experimentellen Chemieunterricht im Schülerlabor mit spieltypischen Elementen wie Narrativ, Rätselstruktur und Feedback. Zwei exemplarische Lerneinheiten zeigen, wie Experimente mit und ohne digitale Lernumgebung in motivierende, problemorientierte Lernkontexte eingebettet werden können. Erste Evaluationen weisen
Daniela Krischer, Volker Hofheinz
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ChemSusChem, Volume 18, Issue 6, March 15, 2025.The addition of Na2CO3 or K2CO3 to sewage sludge prior to combustion leads to the production of ashes containing phosphate in the form of buchwaldite‐like phases (Ca(Na/K)PO4). Compared to conventional sewage sludge mono‐ashes, such Na‐ or K‐ashes show greatly increased P‐solubilities and proved to be potent P‐fertiliser materials in greenhouse ...
Lorenz Bier‐Schorr +4 more
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ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.A π‐conjugated carbazole (p‐CBZ) layer is electro‐polymerized on BiVO4 to form a p–n heterojunction that enhances charge separation and suppresses surface recombination, while a NiOOH co‐catalyst accelerates oxygen evolution kinetics. The synergistic BVO/p‐CBZ/NiOOH photoanode delivers a high photocurrent density and long‐term stability for efficient ...
Lakshman Sundar Arumugam +11 more
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ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.Oxidized graphene rich in carboxylic acid groups obtained via a simple electrochemical exfoliation route is shown to tackle the main challenges of aqueous Zn‐ion batteries (AZIBs), specifically short Zn anode cycle life and sluggish cathode reaction kinetics.
Enrique Álvarez‐Rubiera +9 more
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Journal of the Science of Food and Agriculture, EarlyView.Abstract Background Oak barrels are widely used in wine and spirit aging, where oxygen transmission plays a key role in the development of chemical and sensory properties. In cooperage, stave selection is traditionally based on grain width; however, the extent to which grain and wood macrostructure determine oxygen transmission under barrel conditions ...
Maria del Alamo‐Sanza +3 more
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International Journal of Mechanical System Dynamics, EarlyView.ABSTRACT Digitalization and emerging technologies are increasing the demand for wireless sensing and the Internet of Things (IoT), which provide opportunities for autonomous sources of electricity in the form of energy harvesting systems. This paper focuses on the challenges in hybrid piezoelectric‐electromagnetic kinetic energy harvesting systems that
Petr Sosna, Damian Gaska, Zdeněk Hadaš
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The Mexico City Policy in US Development Policy and Its Backlash‐Frontlash‐Logic
Public Administration and Development, EarlyView.ABSTRACT The Mexico City Policy provides for the discontinuation of U.S. government funding for foreign non‐governmental organizations (NGOs) that provide legal abortion services. While Republican administrations have repeatedly pushed for the introduction of the Mexico City Policy after their re‐election, those regulations have been rescinded by ...
Thomas Lange
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Transforming Coastal Waste: Algae‐Based Recycled HDPE Composites for Enhanced Sustainability
Polymer Engineering &Science, EarlyView.Manufacturing and characterization of composites from beach‐cast algae waste combined with recycled high‐density polyethylene. ABSTRACT Growing environmental concerns are accelerating the development of more sustainable materials. This study successfully created a composite material by combining recycled high‐density polyethylene (HDPE) as the matrix ...
Patricia Cabrera‐García +4 more
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