Results 61 to 70 of about 37,514 (226)

Mesoporous Carbon Thin Films with Large Mesopores as Model Material for Electrochemical Applications

open access: yesAdvanced Functional Materials, EarlyView.
Mesoporous carbon thin films possessing 70 nm mesopores are prepared on titanium substrates by soft templating of resol resins with a self‐synthesized poly(ethylene oxide)‐block‐poly(hexyl acrylate) block copolymer. A strategy to avoid corrosion of the metal substrate is presented, and the films are extensively characterized in terms of morphology ...
Lysander Q. Wagner   +9 more
wiley   +1 more source

ETNOMATEMATIKA: KRISTALISASI BUDAYA DALAM MODEL PEMBELAJARAN 3R CORE

open access: yesBarekeng, 2019
The 3R learning model is a learning model that emphasizes Reading, Writing and Arithmatic based on the context of the 21st century skills. The 3R learning model is translated into life and career skills, learning and innovation skills and information ...
Feny Rita Fiantika, D. Darsono, Ika S.
doaj   +1 more source

ETNOMATEMATIKA: EKSPLORASI KESENIAN MUSIK CALUNG BANYUMASAN SEBAGAI SUMBER PEMBELAJARAN MATEMATIKA

open access: yesAksioma: Jurnal Program Studi Pendidikan Matematika, 2023
The selection of material that is contextual and based on student culture is essential for improving the quality of learning mathematics. This study aims to examine, explore, and explore Calung Banyumasan music as a source of learning mathematics that is
Kusno Kusno   +2 more
doaj   +1 more source

Two Material Properties from One Wavelength‐Orthogonal Photoresin Enabled by a Monochromatic Laser Integrated Stereolithographic Apparatus (Mono LISA)

open access: yesAdvanced Materials, Volume 37, Issue 13, April 2, 2025.
A single object with dual properties – degradable and non‐degradable – is fabricated in a single print simply by switching the printing colors. The advanced multi‐material printing is enabled by the combination of a fully wavelength‐orthogonal photoresin and a monochromatic tunable laser printer, paving the way for precise multi‐material ...
Xingyu Wu   +5 more
wiley   +1 more source

Miedzy oczywistością a dedukcją. Platon i Euklides o równości

open access: yesZagadnienia Filozoficzne w Nauce, 2011
We confront Plato's understanding of equality in geometry with that of Euclid. We comment on Phaedo, 74b-c, Meno, 81e-85d and Elements, Book I. We distinguish between two meanings of equality, congruence and equality of the area, and show that in Plato ...
Piotr Błaszczyk, Kazimierz Mrówka
doaj  

Inertial forces and the foundations of optical geometry

open access: yes, 2006
Assuming a general timelike congruence of worldlines as a reference frame, we derive a covariant general formalism of inertial forces in General Relativity. Inspired by the works of Abramowicz et. al. (see e.g. Abramowicz and Lasota, Class. Quantum Grav.
Abramowicz M A   +16 more
core   +1 more source

Role of Liquid Composition in the Transient Liquid Assisted Growth of Superconducting YBa2Cu3O7‐δ Films

open access: yesAdvanced Materials, EarlyView.
The Y supersaturation in the [Ba‐Cu(I/II)‐O] transient liquid composition is the driving force toward YBCO nucleation and growth in TLAG. Tuning the initial (Ba:Cu) molar ratio in the ink composition determines the YBCO epitaxial nucleation through supersaturation control.
Lavinia Saltarelli   +12 more
wiley   +1 more source

Real Killing spinors in neutral signature

open access: yesJournal of High Energy Physics, 2019
Spinorial geometry methods are used to classify solutions admitting Majorana Killing spinors of the minimal 4-dimensional supergravity in neutral signature, with van- ishing cosmological constant and a single Maxwell field strength.
J. Gutowski, W.A. Sabra
doaj   +1 more source

Exact half-BPS black hole entropies in CHL models from Rademacher series

open access: yesJournal of High Energy Physics, 2019
The microscopic spectrum of half-BPS excitations in toroidally compactified heterotic string theory has been computed exactly through the use of results from analytic number theory.
Richard Nally
doaj   +1 more source

Modular factorization of superconformal indices

open access: yesJournal of High Energy Physics, 2023
Superconformal indices of four-dimensional N $$ \mathcal{N} $$ = 1 gauge theories factorize into holomorphic blocks. We interpret this as a modular property resulting from the combined action of an SL(3, ℤ) and SL(2, ℤ) ⋉ ℤ 2 transformation.
Vishnu Jejjala   +3 more
doaj   +1 more source

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