Results 21 to 30 of about 1,213 (209)

Perspectivas fiscales del Distrito de Barranquilla

open access: yesPanorama Económico, 2011
ArtÍculo resultado del proyecto de investigación “Nuevo enfoque de la gerencia financiera pública y privada”. Se presenta un análisis que permite mostrar las experiencias en el manejo de las finanzas, la cual demanda mayor responsabilidad fiscal por ...
Florentino Rico-Calvano   +1 more
doaj   +1 more source

Support‐Controlled Reaction Pathways via Dynamic Sulfur‐Mediated Interfaces for Selective Urea Electrolysis

open access: yesAdvanced Functional Materials, EarlyView.
Sulfur‐doped graphitized carbon nanofibers act as adaptive catalyst–support platforms, enabling dynamic sulfur‐mediated reconstruction and strong metal–support interactions. This unique behavior enhances catalyst stability and controls reaction pathways, achieving highly selective urea oxidation (∼92% N2) coupled with efficient hydrogen evolution ...
Melanie Guillén‐Soler   +4 more
wiley   +1 more source

Tailored Diketopyrrolopyrrole Derivatives for Efficient Deep‐Red Organic Lasers

open access: yesAdvanced Functional Materials, EarlyView.
Tailored diketopyrrolopyrrole derivatives exhibit high stable amplified spontaneous emission with single or dual bands. Incorporated into distributed‐feedback lasers based on one‐ and two‐dimensional dichromated‐gelatin diffractive gratings, these materials provide a robust, flexible platform for integrated organic deep‐red light sources. ABSTRACT Deep‐
Pablo Pasqués‐Gramage   +10 more
wiley   +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

Rol de la revisoría fiscal en Colombia en la prevención de la evasión fiscal en el sector de la construcción

open access: yesRevista Visión Contable
El papel de la Revisoría Fiscal es vital para la prevención de la evasión fiscal al hacer control previo y posterior en las entidades del sector de la construcción, ya que los hallazgos le permiten dar una opinión sobre la razonabilidad de los estados ...
Juan José Quintero Rivera   +1 more
doaj   +1 more source

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

La investigación del delito en México: Una visión desde la función de la Policía

open access: yesNuevo Derecho
El presente trabajo estudia el papel de la policía de investigación en México, también conocida como Policía ministerial o dependiente del fiscal o ministerio público, quien juega un papel muy importante en la reconstrucción del hecho presuntamente ...
Rafael Santacruz Lima
doaj   +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

Rincón lógico matemático y el desarrollo cognitivo, en la etapa pre operacional de los niños, de la escuela fiscal Mixta Leonidas Plaza Gutiérrez, ubicada en el Cantón Paján, Provincia De Manabí; en el periodo 2021 – 2022

open access: yesEducare, 2022
El presente artículo corresponde a una investigación realizada, la cual tuvo como propósito determinar la importancia del rincón lógico matemático, en el desarrollo cognitivo, en la etapa pre operacional en los niños y niñas de la escuela fiscal mixta ...
Veronica Monserrate Delgado Intriago   +1 more
doaj   +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

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