Results 41 to 50 of about 2,029,751 (286)

El espacio y la materia en el conocimiento metafísico

open access: yesTópicos, 2013
To show how metaphysics may come to know objects without matter, space or time, the author contrasts the Aristotelian notion of space, as the real distance between two material objects, against Kantian space, conceived as geometrical and uniform.
Carlos Llano
doaj   +1 more source

Stepwise On‐Surface Synthesis and Transformations of Two‐Dimensional Covalent Organic Frameworks by Controlled Thermal Stimuli

open access: yesAdvanced Materials, EarlyView.
The seminal transformation of a 2D‐COF (SURFCOF‐IMDEA1) into a 2D porous COF (SURFCOF‐IMDEA2) on Au(111) by a sequential C‐C coupling and ladderization triggered by thermal annealing steps at increasing temperatures is reported. Abstract The development of covalent organic frameworks (COFs) is currently a primary objective in materials science, taking ...
Ana Barragán   +11 more
wiley   +1 more source

Más allá de lo cuantificable: la materia arquitectónica desde la reciprocidad, elaboración y memoria

open access: yes[i2]: Investigación e Innovación en Arquitectura y Territorio
Durante años, el discurso sobre la gestión de los recursos materiales en la arquitectura se ha centrado mayoritariamente en indicadores cuantitativos como la huella de carbono.
Maddi Manterola Ubillos
doaj   +1 more source

What emotions do primary education students experience in the subject of nature sciences? Analysis of the block: "materia y energía"

open access: yesINFAD, 2018
There are many contexts in which emotions, and the intelligent use of them, are necessary for the integral development of the person. But without a doubt, and in relation to the field in which we find ourselves, emotional competences play a very ...
Irene Del Rosal, Maria Luisa Bermejo
doaj   +1 more source

Microscopic Insights into Magnetic Warping and Time‐Reversal Symmetry Breaking in Topological Surface States of Rare‐Earth‐Doped Bi2Te3

open access: yesAdvanced Materials, EarlyView.
Magnetic doping of the topological insulator Bi2Te3 with erbium adatoms induces out‐of‐plane magnetism and breaks time‐reversal symmetry, opening a Dirac gap and driving a Fermi surface transition from hexagonal to star‐of‐David geometry. Microscopy, spectroscopy, and magnetic dichroism reveal atomically controlled magnetic interactions that tailor the
Beatriz Muñiz Cano   +18 more
wiley   +1 more source

Resolving the Structural Duality of Graphene Grain Boundaries

open access: yesAdvanced Materials, EarlyView.
Cantilever ncAFM resolves the atomic structure of grain boundaries in graphene, revealing coexisting stable and metastable types. Both contain pentagon/heptagon defects, but metastable GBs show irregular geometries. Modeling shows metastable GBs form under compression, exhibiting vertical corrugation, while stable GBs are flat.
Haojie Guo   +11 more
wiley   +1 more source

Self‐Cooling Molecular Spin Qudits

open access: yesAdvanced Materials, EarlyView.
A material made of [GdEr] molecular dimers can encode a qudit and perform as a magnetic refrigerant. Microwave resonant pulses coherently manipulate its 16 spin states, while direct demagnetization measurements cool the material and a device down to temperatures below 1 K.
Elías Palacios   +12 more
wiley   +1 more source

El transhumanismo de Paul B. Preciado: Sobre las ficciones antirrealistas del Manifiesto contrasexual

open access: yesRevista de Filosofía Universidad Iberoamericana, 2021
En este artículo se propone un análisis crítico de algunos de los principales relatos que sostienen la narrativa postqueer de Paul-Beatriz Preciado, partiendo del supuesto de que toda identidad sexual es una ficción y toda realidad, una ...
María José Binetti   +2 more
doaj   +1 more source

Directional Flow of Confined Polaritons in CrSBr

open access: yesAdvanced Materials, EarlyView.
CrSBr, a layered magnetic semiconductor, naturally channels self‐hybridized excitonpolaritons into highly directional flow. Its intrinsic optical anisotropy, high refractive index, and strong lightmatter coupling enable long‐range guided modes along the a‐axis, with propagation lengths set by their excitonphoton admixture.
Pratap Chandra Adak   +10 more
wiley   +1 more source

Principali Accordi Internazionali [PDF]

open access: yes, 2009
Testi dei principali Accordi Internazionali in materia di proprietà industriale disponibili in Italiano e ...
Lamandini, Marco
core  

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