Results 81 to 90 of about 25,885 (240)

On Metal Carbonyl Compounds in Catalytic Methanol Synthesis: Detection, Consequences, and Removal

Chemie Ingenieur Technik, EarlyView.
Deactivation of Cu/ZnO/Al2O3 catalysts by metal carbonyl compounds in the feed gas is a critical problem in catalytic methanol synthesis. We utilize PTR–MS to identify potential chemical sources, detect contamination in an in‐house CO gas line, and validate filter methods for removing these catalyst poisons before synthesis.
Florian Stappert, Daniel Laudenschleger, Tim Herrendorf, Julia Menten, Holger Ruland   +4 more
wiley   +1 more source

Einfache Herstellung von Kohlenstoff‐Nanopartikeln durch elektrochemische Exfoliation von thermisch vorgeschädigtem Graphit

CHEMKON, EarlyView.
Kohlenstoffhaltige Nanopartikel stellen eine spannende Schnittstelle zwischen Kohlenstoffchemie und Nanochemie dar und wurden von der IUPAC als eine der Top Ten Emerging Technologies des Jahres 2025 ausgezeichnet. Darüber hinaus sind sie geeignet, Top‐Down‐Synthesen von Nanopartikeln im Chemieunterricht zu thematisieren, die bereits curricular ...
Edwin Bogdan, Christoph Weidmann, Thomas Waitz   +2 more
wiley   +1 more source

Poïésis : entre la raison et la sensibilité Les nouveaux médiums de l’art

French Journal for Media Research, 2016
L’article traite de la reproduction matérielle et de la technologie dans le processus d’adaptation, en ce qui concerne les relations politiques, culturelles et économiques selon Jürgen Habermas dans une pratique rationnelle de communication, ainsi que de
Wagner Christiane
doaj  

Intersecting Structures and Gendered Perceptions in Entrepreneurship: A Life‐Course Comparison of Institutional Inclusivity in Italy and the United Kingdom

Corporate Social Responsibility and Environmental Management, EarlyView.
ABSTRACT Using Global Entrepreneurship Monitor (GEM) 2024 data for Italy and the United Kingdom, this study examines how gender gaps in entrepreneurial perceptions, measured as perceived entrepreneurial skills and fear of failure, vary across age and education within contrasting institutional regimes.
Giusy Sica, Chiara Spiniello, Maria Palazzo, Alessandra Micozzi, Giovanna Truda   +4 more
wiley   +1 more source

Reweighting Scheme for the Calculation of Grand‐Canonical Expectation Values in Quantum Monte Carlo Simulations With a Fermion Sign Problem

Contributions to Plasma Physics, EarlyView.
ABSTRACT Ab initio path integral Monte Carlo (PIMC) simulations constitute the gold standard for the estimation of a broad range of equilibrium properties of a host of interacting quantum many‐body systems spanning a broad range of conditions from ultracold atoms to warm dense quantum plasmas.
Paul Hamann, Jan Vorberger, Tobias Dornheim   +2 more
wiley   +1 more source

Charting Water‐in‐Natural‐Salt (WiNS) Electrolytes. Part I: Effect of Anion's Alkyl Tail Length

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
At 20 m, potassium carboxylates from formate to butyrate reveal anion tail‐controlled nanostructure. SAXS shows a pre‐peak shifting to lower q with chain length. Molecular dynamics reproduces S(q) and attributes it to concentration fluctuations forming bicontinuous segregation.
Alessandra Del Giudice, Laura Hildebrandt, Jin Han, Radhika Krishna Hema, Luciano Galantini, Stefano Passerini, Alberto Varzi, Alessandro Mariani   +7 more
wiley   +1 more source

Revealing Structure–Performance Relations in Core‐Shell Catalyst‐Based PEM Water Electrolyzer Anodes with Low Iridium Loading

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Table of Contents The TiO2@IrO2 core–shell architecture ensures high electronic conductivity even at a low iridium content of 10 wt%. The resulting catalyst layer shows significantly higher iridium utilization than a commercial reference, leading to improved PEMWE single‐cell performance at low iridium loading.
Selina Finger, Darius Hoffmeister, Tien‐Ching Ma, Lena Fiedler, A. Lucía Morales, Andreas Körner, Nico Roubicek, Leopold Lahn, Johannes Böhmer, Thomas Przybilla, Erdmann Spiecker, Olga Kasian, Anna T. S. Freiberg, Karl J. J. Mayrhofer, Simon Thiele, Chuyen van Pham, Andreas Hutzler   +16 more
wiley   +1 more source

Predicting Solar Photovoltaic Power Output in Saudi Arabia's Jazan Region: Performance Comparison of Machine Learning Models

Energy Science &Engineering, EarlyView.
Workflow of the PV power estimation and ML forecasting methodology. ABSTRACT Accurate prediction of solar panel energy output is vital for managing power systems effectively and maintaining a stable electrical grid. This is especially important in regions that rely heavily on renewable sources. This research provides a direct comparison of five machine
Abdoalateef Alzhrani, Abdullahi Abubakar Mas'ud, Mohd Khairul Amri Kamarudin, Firdaus Muhammad‐Sukki, Abdullahi Mohammad   +4 more
wiley   +1 more source

“Étude de l’acceptabilité de la réalité virtuelle dans l’industrie aéronautique” [Résumé]

Activités, 2020
Camille Sagnier
doaj   +1 more source

Wpływ dokarmiania dolistnego na zdrowotność roślin ziemniaka w okresie wegetacji

Agronomy Science, 2009
Badania oparto na wynikach doświadczenia polowego, przeprowadzonego w latach 2004–2006 na glebie kompleksu żytniego dobrego. Eksperyment założono metodą losowanych podbloków, a badano technologie uprawy: technologię z zastosowaniem bioregulatora wzrostu 
BARBARA SAWICKA, DOMINIKA SKIBA
doaj