Results 41 to 50 of about 7,817 (257)

Información de estudiantes universitarios sobre el uso inapropiado de la ciencia

open access: yesRevista Interuniversitaria de Formación del Profesorado, 2017
El cometido original de la ciencia era servir a la humanidad. En las comunidades dedicadas a la producción de conocimiento algunos preguntan si se cumplió ese ideal, pues hoy los patrocinadores principales de la investigación son gobiernos y empresas, lo
Gilberto Fregoso Peralta   +1 more
doaj  

Eutectozymes as Soft Hybrid Materials for Advanced Biocatalysis

open access: yesAdvanced Materials, EarlyView.
Eutectozymes are sustainable hybrid materials that embed a GOx–HRP cascade within hydrophobic eutectogels featuring a dual supramolecular–covalent network. This architecture preserves native enzyme structure and stability, enables efficient heterogeneous biocatalysis in aqueous media, and positions eutectogels as robust platforms for next‐generation ...
Manuel Eduardo Martinez Cartagena   +10 more
wiley   +1 more source

π‐Enlargement in Porphyrin Macrocycles at Interfaces

open access: yesAngewandte Chemie, EarlyView.
On‐surface synthesis of a 20‐π free‐base expanded porphyrin, by depositing onto a hot Ag(111) substrate an 18‐π free‐base precursor equipped with ‐CF3 functional groups ABSTRACT Porphyrins are essential heteroatomic macrocycles, fundamental to both biological systems and advanced technology.
Ana Barragán   +11 more
wiley   +2 more sources

Pactos electorales y coaliciones de gobierno en Canarias (1979-2002) Pactos electorales y coaliciones de gobierno en Canarias (1979-2002)

open access: yesPolítica y Sociedad, 2003
Canary Islands are one of the Spanish Regional Governments that have had to conform coalition Governments in their different levels of Government. In this article we analyse the evolution of the coalition Governments, the coalition agreements between ...
José Adrián García Rojas
doaj  

High Charge Carrier Mobility in Non‐Conjugated 3D Covalent Organic Frameworks

open access: yesAdvanced Materials, EarlyView.
A non‐conjugated 3D COF constructed via boronate ester linkages from tetraphenylene and pyrene‐based monomers is reported, which exhibits a high charge carrier mobility of 14 ± 1 cm2 V−1 s−1. ABSTRACT π‐Conjugation, π–π stacking, and long‐range order play a central role in determining charge transport efficiency in organic materials.
Joaquín Almarza   +11 more
wiley   +1 more source

Nanographene‐Based van der Waals Organic Framework With Permanent Porosity

open access: yesAngewandte Chemie, EarlyView.
Unlocking record‐breaking porosity in a supramolecular organic framework (SOF). Through the strategic design of a C3‐symmetric nanographene, a robust supramolecular framework is achieved via exclusively weak van der Waals forces. This metal‐free scaffold reaches a benchmark BET surface area of 1108 m2 g−1 –the highest to date for this class–combining ...
Arturo Oró   +5 more
wiley   +2 more sources

Una presa difícil de atrapar: el rendimiento de gobiernos y administraciones públicas

open access: yesRevista Española de Ciencia Política, 2013
En este artículo se discute la conceptualización del “rendimiento de los gobiernos” en la literatura deCiencia Política y su operacionalización en cuatro estudios internacionales del Banco Mundial, del BancoCentral Europeo, del Gobierno holandés y del ...
Xavier Ballart
doaj  

De la gestión de crisis a la crisis de gestión: responsabilidad y democracias liberales en el estallido de la pandemia de la COVID-19

open access: yesArbor: Ciencia, Pensamiento y Cultura
El estallido de la pandemia de la COVID-19 conmocionó a las sociedades de todo el mundo. En su esfuerzo por adaptar sus respuestas a la crisis a sus propias condiciones de supervivencia, los gobiernos tendieron desde el principio a recurrir a argumentos
Branislav Radeljić   +1 more
doaj   +1 more source

One‐Dimensional Materials Supported in Two‐Dimensional Van der Waals Metal–Organic Frameworks with Optical Anisotropy Switching via Twist‐Engineering

open access: yesAdvanced Materials, EarlyView.
We introduce a molecular strategy to assemble one‐dimensional (1D) materials into two‐dimensional (2D) van der Waals metal–organic frameworks (MOFs). Crystals of [FeX(pzX)(bpy)] (X = Cl, F) form anisotropic 2D layers that can be mechanically exfoliated into thin sheets.
Eleni C. Mazarakioti   +12 more
wiley   +1 more source

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