Results 111 to 120 of about 61,403 (291)

Biomass Native Structure Into Functional Carbon‐Based Catalysts for Fenton‐Like Reactions

open access: yesAdvanced Functional Materials, EarlyView.
This study indicates that eight biomasses with 2D flaky and 1D acicular structures influence surface O types, morphology, defects, N doping, sp2 C, and Co nanoparticles loading in three series of carbon, N‐doped carbon, and cobalt/graphitic carbon. This work identifies how these structural factors impact catalytic pathways, enhancing selective electron
Wenjie Tian   +7 more
wiley   +1 more source

La Organización Latinaomericana de Solidaridad (OLAS) a través del Boletín de Información de su Comité Organizador (1966-1967)

open access: yesRevista de Historia Social y de las Mentalidades, 2018
La Organización Latinoamericana de Solidaridad (OLAS) nació a finales de los años sesenta con el objetivo de la liberación de los pueblos del continente y la superación del subdesarrollo económico, social y cultural, enarbolando para ello la lucha armada
Patricia Calvo
doaj  

A new security dilemma: Plan Colombia and the use of private military companies in South America [PDF]

open access: yes, 2010
In January 2009, Colombian President Alvaro Uribe affirmed that after decades of defeats, his country, together with the United States, was finally succeeding in its main challenge: the long war against the guerrillas involved in drug trafficking.
Brancoli, Fernando
core  

Patterning the Void: Combining L‐Systems with Archimedean Tessellations as a Perspective for Tissue Engineering Scaffolds

open access: yesAdvanced Functional Materials, EarlyView.
This study introduces a novel multi‐scale scaffold design using L‐fractals arranged in Archimedean tessellations for tissue regeneration. Despite similar porosity, tiles display vastly different tensile responses (1–100 MPa) and deformation modes. In vitro experiments with hMSCs show geometry‐dependent growth and activity. Over 55 000 tile combinations
Maria Kalogeropoulou   +4 more
wiley   +1 more source

A model of cyclical terrorist murder in Colombia, 1950-2004. Forecasts 2005-2019 [PDF]

open access: yes
: This paper continues a research born in 1993 as a consequence of the growing concern regarding the escalation of violence in Colombia; its objective is to create an econometric model capable of forecasting the path of terrorist murder under different ...
Gomez-Sorzano, Gustavo
core   +1 more source

CRISPR/Cas9‐Assisted Microrobots for Fast and Ultrasensitive “On‐The‐Fly” Next‐Generation DNA Detection

open access: yesAdvanced Functional Materials, EarlyView.
This work presents self‐propelled CRISPR/Cas9‐functionalized Au–MRs for rapid, amplification‐free, “on‐the‐fly” DNA detection. By harnessing motion‐assisted signal recovery, the platform achieved the limit of detection in low fM DNA concentrations, enabling detection across a wide dynamic range within only 5 min, which is significantly faster than any ...
Jyoti   +3 more
wiley   +1 more source

Amateur Palestinian Guerrilla [PDF]

open access: yesJournal of the Royal Army Medical Corps, 1980
openaire   +2 more sources

Peace Laboratory of Magdalena Medio: a peace laboratory"? " [PDF]

open access: yes
This paper focuses on a very original and peculiar peacebuilding experience - the Peace Laboratory of Magdalena Medio. Based on the civil society and located in a highly conflictual region of Colombia, it represents a peacebuilding from below initiative ...
Miguel Barreto Henriques
core  

Understanding Decoherence of the Boron Vacancy Center in Hexagonal Boron Nitride

open access: yesAdvanced Functional Materials, EarlyView.
State‐of‐the‐art computations unravel the intricate decoherence dynamics of the boron vacancy center in hexagonal boron nitride across magnetic fields from 0 to 3 T. Five distinct regimes emerge, dominated by nuclear spin interactions, revealing optimal coherence times of 1–20 µs in the 180–350 mT range for isotopically pure samples.
András Tárkányi, Viktor Ivády
wiley   +1 more source

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