Results 61 to 70 of about 37,802 (311)

Prenucleation Species Dictate Foreign Ion Incorporation in the Biomineral Precursor Amorphous Calcium Carbonate

Advanced Functional Materials, EarlyView.
ACC forms via aggregating prenucleation clusters that gatekeep its chemical composition. Ion identity steers the path: Ba and Sr substitute Ca in clusters, thereby inhibiting nucleation, with a dose‐dependent switch of Sr to induction. Mg partitions into Mg‐rich and Mg‐poor clusters; the latter form ACC, expelling Mg.
Qianyu Zhao, Patrick Duchstein, Benedikt Demmert, Thi Q. Nhi Dao, Krishnaveni Anjala, Evelyn Gruber, Franziska Gröhn, Dirk Zahn, Dorrit E. Jacob, Stephan E. Wolf   +9 more
wiley   +1 more source

Miedzy oczywistością a dedukcją. Platon i Euklides o równości

Zagadnienia 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  

ETNOMATEMATIKA: EKSPLORASI KESENIAN MUSIK CALUNG BANYUMASAN SEBAGAI SUMBER PEMBELAJARAN MATEMATIKA

Aksioma: 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, Gunawan Gunawan, Makhful Makhful   +2 more
doaj   +1 more source

Geometric discretization of the Koenigs nets

, 2002
We introduce the Koenigs lattice, which is a new integrable reduction of the quadrilateral lattice (discrete conjugate net) and provides natural integrable discrete analogue of the Koenigs net. We construct the Darboux-type transformations of the Koenigs
Adam Doliwa, Belinski V. A., Cenkl B., Doliwa A., Doliwa A., Doliwa A., Doliwa A., Doliwa A., Doliwa A., Doliwa A., Doliwa A., Doliwa A., Eisenhart L. P., Koenigs G., Konopelchenko B. G., Levi D., Mañas M., Nieszporski M., Nimmo J. J. C., Schief W. K., Tzitzéica G.   +20 more
core   +1 more source

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

Advanced 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, Katharina Ehrmann, Ching Thye Gan, Benjamin Leuschel, Fred Pashley‐Johnson, Christopher Barner‐Kowollik   +5 more
wiley   +1 more source

Real Killing spinors in neutral signature

Journal 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

Proofs of some geometric conjectures on the power sum congruence modulo a prime [PDF]

Notes on Number Theory and Discrete Mathematics
The main purpose of this paper is to verify the geometric conjectures of Mustonen (2022) concerning the solutions and the number of solutions of the congruence xⁿ+yⁿ≡0 (mod p), where p is a prime. For p>2, the nontrivial solutions lie on the "lines" y≡cx
Pentti Haukkanen
doaj   +1 more source

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

Advanced 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, Diana García, Laia Soler, Elzbieta Pach, Kapil Gupta, Daniel Sanchez‐Rodriguez, Jordi Aguilar, Víctor Fuentes, Eduardo Solano, Cristian Mocuta, Jordi Farjas, Xavier Obradors, Teresa Puig   +12 more
wiley   +1 more source

Stabilization of the Benzene Radical Trianion in an Inverse‐Sandwich Yttrium Complex

Angewandte Chemie, EarlyView.
A new type of benzene anion state is born: The unprecedented benzene radical trianion embedded in an inverse‐sandwich yttrium complex was synthesized by a one‐electron chemical reduction of its benzene dianion precursor using potassium graphite in the presence of [2.2.2]‐cryptand.
Weiqing Mao, Saroshan Deshapriya, Shenglai Yao, Christian Lorent, Matthias Driess, Selvan Demir   +5 more
wiley   +2 more sources

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

Journal 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