Results 21 to 30 of about 626,232 (267)

Spiro‑Linked Double Tetraphenylethenes: Solid‐State Emission and Circularly Polarized Luminescence Imaging

open access: yesAngewandte Chemie, EarlyView.
Two spirobisanthracene‐tetraphenylethene (SBA‐TPE) hybrid compounds are synthesized and their photophysical properties in the solid state reported. Circularly polarized luminescence in aggregates, films and dispersions is evaluated. Circularly polarized luminescence imaging is evaluated over crystals revealing discrimination of different types of ...
José L. Páez   +7 more
wiley   +2 more sources

Sociophysics Simulations I: Language Competition [PDF]

open access: yes, 2005
Using a bit-string model similar to biological simulations, the competition between different languages is simulated both without and with spatial structure.
Schulze, Christian, Stauffer, Dietrich
core   +2 more sources

Would RC wide-beam buildings in Spain have survived Lorca earthquake (11-05-2011)? [PDF]

open access: yes, 2016
Lorca earthquake (11-05-2011) is most destructive event recorded in Spain, causing nine fatalities and other severe consequences. Its important intensity was rather unexpected, and serious concern arose regarding risk of building stock in Spain.
Benavent Climent, Amadeo   +2 more
core   +2 more sources

On the quality of random number generators with taps [PDF]

open access: yes, 1999
Recent exact analytical results developed for the random number generators with taps are reported. These results are applicable to a wide class of algorithms, including random walks, cluster algorithms, Ising models.
Shchur, Lev N.
core   +3 more sources

Sociophysics Simulations II: Opinion Dynamics

open access: yes, 2005
Individuals have opinions but can change them under the influence of others. The recent models of Sznajd (missionaries), of Deffuant et al. (negotiators), and of Krause and Hegselmann (opportunists) are reviewed here, while the voter and Ising models ...
Stauffer, Dietrich
core   +2 more sources

The Collaboration of a Principal and a Mathematics Specialist [PDF]

open access: yes, 2014
This article describes the importance of the collaboration between the principal, Patty Granada, and the Mathematics Specialist, Susan Garthwaite, in fostering a highly functioning mathematics program.
Garthwaite, S., Granada, P.
core   +1 more source

Pedagogy in diverse secondary school classes: Legacies for higher education [PDF]

open access: yes, 1871
As university teachers we find ourselves grappling with the increasingly diverse legacies of students’ prior pedagogic experiences – some of which seem to work against the quality intellectual outcomes now demanded from higher education.
Góngora y Martínez, Manuel de   +1 more
core   +3 more sources

Raman Microscopy at the Organic–Inorganic Interfaces in Human Calcified Aortic Valves Shows the Co‐Existence of Whitlockite Crystals and Carbonated Hydroxyapatite‐Mineralized Collagen Fibrils

open access: yesAdvanced Functional Materials, EarlyView.
This study advances our understanding of aortic valve stenosis by capturing spatially resolved chemical and structural changes at the nanoscale. The findings highlight the potential of combined Raman and electron microscopy for understanding calcification mechanisms across diverse tissue types.
Robin H. M. Van der Meijden   +11 more
wiley   +1 more source

Guarding the border: watchtowers of the Nasrid Kingdom of Granada. Characterization and vulnerability assessment [PDF]

open access: yes, 2018
RUIZ-JARAMILLO, J. y GARCÍA-PULIDO, L.J., 2018. Guarding the border: watchtowers of the Nasrid Kingdom of Granada. Characterization and vulnerability assessment. Heritage 2018: 6th International Conference on Heritage and Sustainable Development. Granada:
García-Pulido, Luis José   +1 more
core  

High Charge Carrier Mobility in Non‐Conjugated 3D Covalent Organic Frameworks

open access: yesAdvanced Materials, EarlyView.
A non‐conjugated 3D COF constructed via boronate ester linkages from tetraphenylene and pyrene‐based monomers is reported, which exhibits a high charge carrier mobility of 14 ± 1 cm2 V−1 s−1. ABSTRACT π‐Conjugation, π–π stacking, and long‐range order play a central role in determining charge transport efficiency in organic materials.
Joaquín Almarza   +11 more
wiley   +1 more source

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