Results 61 to 70 of about 1,071,283 (270)

Spin and Charge Control of Topological End States in Chiral Graphene Nanoribbons on a 2D Ferromagnet

open access: yesAdvanced Materials, EarlyView.
Chiral graphene nanoribbons on a ferromagnetic gadolinium‐gold surface alloy display tunable spin and charge states at their termini. Atomic work function variations and exchange fields enabe transitions between singlet, doublet, and triplet configurations.
Leonard Edens   +8 more
wiley   +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

Bioorthogonal Photoactivation of 2‐Nitrobenzyl Caged Doxorubicin Anticancer Prodrugs on Gold Nanostars

open access: yesAdvanced Materials, EarlyView.
Bioorthogonal chemistry was applied to intracellularly photoactivate Doxorubicin (Dox) using gold nanostars (AuNSt) and near‐infrared (NIR) light. Two prodrugs were used: one photoactivatable, masked with 2‐nitrobenzyl carbamate (proDox1) and another photolabile, masked with 2‐nitrobenzyl diol (proDox2), which was attached to the AuNSt surface.
Juan José Esteve‐Moreno   +15 more
wiley   +1 more source

Insuficiencias de innovación [PDF]

open access: yes
(Disponible en idioma inglés únicamente) Existe la idea corriente de que la baja productividad o un nivel bajo de crecimiento se deben a lo que cabría describir de `insuficiencia de innovación`, que usualmente se identifica como un nivel de inversión en ...
Andrés Rodríguez-Clare   +1 more
core  

Robust mean absolute deviation problems on networks with linear vertex weights [PDF]

open access: yes, 2013
This article deals with incorporating the mean absolute deviation objective function in several robust single facility location models on networks with dynamic evolution of node weights, which are modeled by means of linear functions of a parameter ...
López de los Mozos Martín, María Cruz   +2 more
core   +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

Maíces con alto contenido de antocianina, biofortificados con zinc, provitamina A y de alta calidad de proteína en Perú

open access: yesACI Avances en Ciencias e Ingenierías
Más de 2000 millones de personas en el mundo padecen “hambre oculta” por insuficiencia de minerales y/o vitaminas en la dieta diaria. La situación del hambre en Perú pasó de 17.7 a 19.6 puntos de 2021 a 2022.
Luis A. Narro León   +16 more
doaj   +3 more sources

Supporting the Optimized Execution of Business Processes through Recommendations [PDF]

open access: yes, 2011
In order to be able to flexibly adjust a company’s business processes (BPs) there is an increasing interest in flexible Process-Aware Information Systems (PAISs).
Barba Rodríguez, Irene   +2 more
core   +1 more source

Solvent‐Free Thermal Defect Engineering in Molecular Frameworks With Volatile Linkers

open access: yesAdvanced Materials, EarlyView.
Thermal removal of neutral volatile linkers enables precise and solvent‐free generation of metal vacancies in MOFs. This strategy affords redox‐stable, coordinatively unsaturated FeII sites with tunable spin, ligand coordination, and catalytic behavior. The approach offers a general route to design defect‐functional materials through local coordination
Sonia Martínez‐Giménez   +9 more
wiley   +1 more source

Efecto del guano de isla en el rendimiento de dos variedades de Quinua (Chenopodium quinoa Willd) en suelo degradado

open access: yesAgroindustrial Science, 2020
El objetivo del presente trabajo de investigación fue evaluar el efecto del Guano de las Islas en el rendimiento de dos variedades de quinua (Chenopodium quinoa Willd) en suelo en proceso de degradación y suelo de alta fertilidad natural, para ambas ...
R.C. Cosme, A.F. Reynoso, S. Sanabria
doaj   +1 more source

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