Results 71 to 80 of about 173,964 (305)

A High‐Performance and Fully Recyclable Supramolecular Nanofibrous Membrane for Multifunctional Air Filtration

open access: yesAdvanced Science, EarlyView.
A green, thermoreversible self‐assembly strategy yields a multifunctional and recyclable supramolecular nanofibrous membrane. Graphene oxide (GO) nanosheet acts as a heterogeneous nucleation‐templating agent, simultaneously modulating the supramolecular crystal packing while tailoring the nanofibrous architecture for elite performance.
Wenjing Sun   +6 more
wiley   +1 more source

¿Los orígenes populares de la revolución de 1910? El caso de San Luis Potosí

open access: yesHistoria Mexicana El Colegio de México, 1979
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Romana Falcón
doaj  

STATE FRAGILITY, THE PEACEBUILDER'S CONTRACT, AND THE SEARCH FOR THE LEAST BAD STATE [PDF]

open access: yes
This paper develops two claims that follow from two general conclusions from recent re-search on peacebuilding and post-conflict reconstruction. The first is that international peacebuilders are fairly good at ending violence and at producing stability ...
Michael Barnett
core  

Mechanically Robust Biodegradable Stents With Theragenerative Vascular Responses via Combined 3D Printing and Janus Nanoengineering

open access: yesAdvanced Science, EarlyView.
This work introduces a theragenerative 3D‐printed biodegradable stent with Janus nanoarchitecture for spatially controlled vascular healing. A luminal tantalum ion–implanted surface accelerates endothelialization and hemocompatibility, while an abluminal sirolimus/poly‐L‐lactic acid–tantalum layer provides sustained drug release and suppresses smooth ...
Jong Hwa Seo   +19 more
wiley   +1 more source

¿Fue el compromiso y consenso de las élites lo que llevó a la consolidación democrática en Costa Rica? Evidencias de la década de 1950

open access: yesRevista de Historia, 2000
Con base en evidencias empíricas el autor se opone a la hipótesis de que fue el compromiso y el consenso de las elites lo que llevo a la consolidación de la democracia en Costa Rica y muestra que aun en la década de 1950 los políticos estaban dispuestos ...
Kirk S. Bowman
doaj  

Le società post-romane in Occidente e Oriente. Storici a confronto per una nuova ‘grande narrazione’

open access: yesStoricamente, 2017
The article aims to present a review-discussion upon recent monographs that contributes to a new common ‘great narrative’ about Early Middle Ages and the transformation of the Roman world in the West and in the East.
Paolo Tomei
doaj   +1 more source

Introgressed Variation in TaMYB7‐A1 Drives Graded Dormancy and Climate‐Adaptive Pre‐Harvest Sprouting Resistance in Wheat

open access: yesAdvanced Science, EarlyView.
TaMYB7‐A1 directly activates TaABI5 to enhance ABA signaling and regulate ABA‐GA homeostasis, enforcing seed dormancy. Its superior allele, derived from wild einkorn introgression, harbors a MITE insertion that elevates expression and two amino acid substitutions that enhance transcriptional activity, collectively generating graded PHS resistance for ...
Hao Wang   +18 more
wiley   +1 more source

Familias ricas en Montevideo, 1760-1825

open access: yesFronteras de la Historia
Este artículo analiza la evolución de la desigualdad en Montevideo entre 1760 y 1825 centrándose en la acumulación de riqueza dentro del sector más acaudalado de la sociedad.
Rebeca Riella Koifmann
doaj   +1 more source

Sociología de la cooptación: la imposibilidad de ser élite en América Latina y la reforma educacional chilena como testimonio de la ideología de la modernidad inducida

open access: yesPersona y Sociedad, 2015
El tratamiento del fenómeno de las élites en América Latina frecuentemente olvida que la emergencia social de grupos de élite supone condiciones sociohistóricas extremadamente específicas.
Juan Miguel Chávez Albarrán   +1 more
doaj   +1 more source

Les mouvements migratoires en Italie durant le haut Moyen Âge : déplacements contraints, négociés ou spontanés?

open access: yes, 2007
La mobilité est constante en Italie durant le haut Moyen Âge. Elle affecte les élites sociales qui en font un mode de gouvernement. Elle touche aussi les élites rurales qui se déplacent parfois assez loin pour faire carrière ou pour construire un ...
Feller, Laurent
core   +1 more source

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