Results 21 to 30 of about 7,817 (257)

Water Permeates and Plasticizes Amorphous Carbon Dots: Unraveling the Inner Accessibility of the Nanoparticles by Glass Transition Studies

open access: yesAdvanced Materials, EarlyView.
The water permeability of amorphous carbon dots (CDs) is demonstrated by investigating their plasticization. Novel polyamide‐based and amorphous nanoparticles are synthesized by controlling their inner packing density. Water plasticization is evidenced by the decrease of the CDs glass transition temperature with increasing the hydration degree.
Elisa Sturabotti   +8 more
wiley   +1 more source

Gobiernos y estrategias de coalición en democracias presidenciales: el caso de América Latina Gobiernos y estrategias de coalición en democracias presidenciales: el caso de América Latina

open access: yesPolítica y Sociedad, 2003
The scholarly literature on presidentialism and parliamentarism in modern comparative politics has argued that the combination of presidential government and a multiparty system is problematic. In multiparty systems, of course, the formation of coalition
Antonio Garrido
doaj  

Gobierno corporativo

open access: yesRevista Lasallista de Investigación, 2019
Introducción. Debido a los conflictos de interés, problemas de agencia, prácticas deshonestas y falta a la responsabilidad social, en todo el mundo se han diseñado normas, estándares y reglamentos que pretenden resguardar los intereses de cada stakeholders, como consecuencia de una situación crítica que afecta la relación entre el principal y el agente.
Omar Acuña Moraga   +1 more
openaire   +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

A Functional 2D Carbon Allotrope Combining Nanoporous Graphene and Biphenylene Segments

open access: yesAdvanced Materials, EarlyView.
The synthesis of a novel nanoporous graphene (NPG) is reported with biphenylene segments via thermal fusion of 12‐armchair porous graphene nanoribbons grown on gold surfaces. Characterization using STM, AFM, and DFT reveals low‐defect semiconducting behaviour and tunable band gaps.
Paula Angulo‐Portugal   +14 more
wiley   +1 more source

Myeloid p38 activation maintains macrophage–liver crosstalk and BAT thermogenesis through IL‐12–FGF21 axis

open access: yesHepatology, EarlyView., 2022
Physiological activation of myeloid p38 controls macrophage IL‐12 production and crosstalk to the liver by modulating hepatic FGF21, and subsequently, brown adipose tissue thermogenesis during obesity Abstract Obesity features excessive fat accumulation in several body tissues and induces a state of chronic low‐grade inflammation that contributes to ...
María Crespo   +14 more
wiley   +1 more source

Las Políticas de Seguridad Interna en Chile (1973-2000). Continuidades y readecuaciones en perspectiva históricaLas Políticas de Seguridad Interna en Chile (1973-2000). Continuidades y readecuaciones en perspectiva histórica

open access: yesRevista Ciencias y Humanidades, 2019
El presente artículo tiene por objetivo analizar las políticas de seguridad interior en Chile desde el año 1973 hasta el 2000. En ese sentido, se aborda la Doctrina de Seguridad Nacional implementada durante la dictadura militar de Augusto Pinochet ...
Francisca Eunice Beroíza Valenzuela
doaj   +1 more source

Gobiernos locales y seguridad:

open access: yesPerspectivas Revista de Ciencias Sociales, 2020
En la Argentina, durante los últimos años, los gobiernos locales se han convertido en receptores de demandas relacionadas a la seguridad pública pese a no contar con facultades ni competencias para abordar directamente esta problemática.
Pablo E. Navarro Urquiza   +1 more
doaj   +1 more source

Mesoporous Silica Nanoparticles in Biomedicine: Advances and Prospects

open access: yesAdvanced Materials, EarlyView.
Mesoporous silica nanoparticles offer unique properties like high surface area, tunable pores, and functionalization. They excel in drug delivery, tissue engineering, and stimuli‐responsive therapies, enabling targeted and controlled treatments. With roles in cancer therapy and diagnostics, their clinical translation requires addressing challenges in ...
Miguel Manzano, María Vallet‐Regí
wiley   +1 more source

Enhanced mitochondrial activity reshapes a gut microbiota profile that delays NASH progression

open access: yesHepatology, EarlyView., 2022
Improved mitochondrial activity, due to the lack of methylation‐controlled J protein (MCJ), creates a specific microbiota signature that when transferred through cecal microbiota transplantation delays NASH progression by restoring the gut‐liver axis and enhancing hepatic fatty acid oxidation.
María Juárez‐Fernández   +18 more
wiley   +1 more source

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