Results 91 to 100 of about 310,350 (314)

Open Textbook Proof-of-Concept via Connexions

International Review of Research in Open and Distributed Learning, 2009
To address the high cost of textbooks, Rice University’s Connexions and the Community College Open Textbook Project (CCOTP) collaborated to develop a proof-of-concept free and open textbook.
Judy Baker, Joel Thierstein, Kathi Fletcher, Manpreet Kaur, Jonathan Emmons   +4 more
doaj   +1 more source

Is this a proof? Future teachers’ conceptions of proof

, 2015
In this paper we present part of an ongoing investigation that aims at disclosing the conceptions of proof held by future elementary school teachers. Using a qualitative and interpretative approach, we analyzed data from 66 questionnaires and results show that almost all participants recognize the formal aspect of an algebraic proof but they also ...
Gomes, Alexandra, Viseu, Floriano, Martins, Paula M., Menezes, Luís   +3 more
openaire   +3 more sources

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

Advanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner, Ruben Maile, Murat Cuvalli, Andreas Wolf, Ayisha Komal, Robert Oestreich, Christoph Janiak, Karl Mandel, Alexander Knebel, Klaus Müller‐Buschbaum   +9 more
wiley   +1 more source

Synchrotron Radiation for Quantum Technology

Advanced Functional Materials, EarlyView.
Materials and interfaces underpin quantum technologies, with synchrotron and FEL methods key to understanding and optimizing them. Advances span superconducting and semiconducting qubits, 2D materials, and topological systems, where strain, defects, and interfaces govern performance.
Oliver Rader, Sakura Pascarelli, Klaus Attenkofer, Anna A. Makarova, Karsten Holldack, Kai Rossnagel, Kristiaan Temst, George Kourousias, Stefano Carretta, Caterina Biscari, Helmut Dosch   +10 more
wiley   +1 more source

Versatile Cell Penetrating Peptide for Multimodal CRISPR Gene Editing in Primary Stem Cells

Advanced Functional Materials, EarlyView.
CRISPR machinery in diverse molecular formats (DNA, RNA, and ribonucleic protein) is complexed into nanoparticles with the cell‐friendly arginine‐alanine‐leucine‐alanine (RALA) cell‐penetrating peptide. Nanoparticles are delivered to primary mesenchymal stem cells ex vivo or locally in vivo to facilitate multimodal CRISPR gene editing. This RALA‐CRISPR
Joshua P. Graham, Jose Gabriel Castro, Lisette C. Werba, Joseph Amitrano, Luke Fardone, Kevin P. Francis, Anand Ramamurthi, Michael J. Layden, Helen O. McCarthy, Tomas Gonzalez‐Fernandez   +9 more
wiley   +1 more source

Plasma‐Treated Hydrogel for Combined RONS and Chemotherapy Delivery: A Proof‐of‐Concept In Ovo

Advanced Functional Materials, EarlyView.
This study explores plasma‐treated hydrogels (PTH) as a new way to deliver both reactive oxygen and nitrogen species and chemotherapy (Doxorubicin) directly to tumors. In ovo tests show effects after a single dose, especially in osteosarcoma tumors. Tumor weight decrease, and a resistance‐related protein is reduced.
Milica Živanić, Albert Espona‐Noguera, Angela Privat Maldonado, Patrik Matušů, Francesco Tampieri, Maria‐Pau Ginebra, Abraham Lin, Evelien Smits, Annemie Bogaerts, Cristina Canal   +9 more
wiley   +1 more source

Machine Learning‐Enabled Polymer Discovery for Enhanced Pulmonary siRNA Delivery

Advanced Functional Materials, EarlyView.
This study provides an efficient approach to train a machine learning model by merging heterogeneous literature data to predict suitable polymers for siRNA delivery. Without the need for extensive laboratory synthesis, the machine learning enabled a virtual screening and successfully predicted a polymer that is validated for effective gene silencing in
Felix Sieber‐Schäfer, Min Jiang, Adrian Kromer, Anny Nguyen, Müge Molbay, Simone Pinto Carneiro, David Jürgens, Gerald Burgstaller, Bastian Popper, Benjamin Winkeljann, Olivia Monika Merkel   +10 more
wiley   +1 more source

Hydrogen Production by Solar Photoreforming of Urban Wastewaters in Thin‐Layer Flat Catalytic Panels

Advanced Functional Materials, EarlyView.
This study demonstrates effective hydrogen production and organic pollutant removal from real urban wastewater using solar photoreforming with a Pt/TiO2 photocatalyst. Tested at lab scale and a pre‐pilot flat catalytic panel reactor under natural sunlight, the process showed sustained activity, pollutant degradation, and hydrogen evolution over nearly ...
Laura C. Valencia‐Valero, Kevin A. Simbaña, Margherita Ruscigno, Marta Giamberini, Monika Hapońska, Alberto Puga   +5 more
wiley   +1 more source

MnI‐Functionalized Covalent Organic Framework as Efficient Electrocatalyst for CO2 Reduction in a Catholyte‐Free Zero‐Gap Electrolyzer

Advanced Functional Materials, EarlyView.
This work demonstrates the successful integration of a phenanthroline‐based 2D COF with MnI catalytic sites into a catholyte‐free membrane‐electrode‐assembly cell for CO2 electroreduction. The crystalline COF actively suppresses Mn⁰–Mn⁰ dimerization, achieving a turnover frequency of 617 h⁻¹ at 2.8 V (full‐cell potential), and enabling stable operation.
Laura Spies, Marcos Eduardo G. Carmo, Gonçalves J. Marrenjo, Stephan Reuther, Patrick Ganswindt, Antonio Otavio T. Patrocinio, Thomas Bein, Osmando F. Lopes, Jenny Schneider   +8 more
wiley   +1 more source

Transformer-Based OCR System for Handwritten Signature Verification in Lawmaking Petitions: A Proof of Concept

IEEE Access
Handwritten signature verification (HSV) is essential for validating lawmaking petitions, where each signatory provides a handwritten signature and a personal identifier (ID).
Elena Sanchez-Nielsen, Ismael Martin-Herrera   +1 more
doaj   +1 more source