Results 51 to 60 of about 7,975 (256)

COFs on MOFs: Layer‐by‐Layer Synthesis of MOF@COF Nanoparticles with Synergistic Adsorption

open access: yesAdvanced Materials, EarlyView.
A layer‐by‐layer strategy enables the growth of crystalline covalent organic framework (COF) shells on metal–organic framework nanoparticles, creating core–shell structures with tunable porosity. Ordered interstitial mesopores are formed during shell growth, which are connected with the COF's intrinsic micropores, thereby enhancing water sorption. This
Ana Guillem‐Navajas   +11 more
wiley   +1 more source

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

El desempeño económico de los gobiernos municipales mexicanos en los procesos de desarrollo a escala local

open access: yesEconomía, Sociedad y Territorio, 2010
Diversas perspectivas analíticas sobre descentralización plantean que los gobiernos locales son actores protagónicos, y en los nuevos contextos de globalización, democratización y desmantelamiento del Estado-nación, son los indicados para coordinar ...
Antonio Sánchez-Bernal   +1 more
doaj   +3 more sources

Iterative Synthesis of Pyrene–Coronene Molecular Graphene Nanoribbons

open access: yesAngewandte Chemie, EarlyView.
An iterative approach delivers a new family of undoped, cove‐edged graphene nanoribbons with lengths up to 9.1 nm that exhibit both molar absorptivity and fluorescence brightness values on the order of 105 M−1 cm−1 and an intrinsic charge‐carrier mobility of 475 ± 32 cm2 V−1 s−1.
Miguel A. Medel   +6 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  

nuevo gobierno

open access: yesECA: Estudios Centroamericanos, 1994
No hay resúmenes disponibles. ECA Estudios Centroamericanos, Vol. 49, No. 547-548, 1994: 538-541.  
openaire   +1 more source

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

Microenvironmental Tuning in Isostructural Conjugated Metal–Organic Frameworks for Superior Photocatalytic H2O2 Generation

open access: yesAngewandte Chemie, EarlyView.
Two isostructural conjugated‐MOFs (Fe‐Tp and Mn‐Tp) photocatalysts were engineered with nonequivalent microenvironmental redox tuning for hydrogen peroxide production. The manganese analog engages both the oxygen reduction reaction and the water oxidation reaction while suppressing decomposition, delivering 10 487 µmol g−1 h−1 with an apparent quantum ...
Kayaramkodath Chandran Ranjeesh   +10 more
wiley   +2 more sources

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