Results 61 to 70 of about 138,013 (260)

Aprendendo com a história: críticas à experiência da Cooperação Norte-Sul e atuais desafios à Cooperação Sul-Sul

open access: yesCaderno CRH
O principal objetivo deste artigo é, com base nas limitações críticas apontadas à experiência histórica da Cooperação Norte-Sul (CNS), analisar alguns dos dilemas com que se confrontam as atuais estratégias de Cooperação Sul-Sul (CSS), concebidas e ...
Carlos R. S. Milani
doaj   +1 more source

The South-South Dimension in International Research Collaboration [PDF]

open access: yesAnais da Academia Brasileira de Ciências
In this paper, we looked at the collaboration publishing patterns for groups of Global South countries (Latin America, Africa, ASEAN, Asian, BRICS), as well as publishing parameters.
CONCEPTA MCMANUS   +5 more
doaj   +1 more source

Phase‐Resolved Defect Transport Mechanisms Governing Asynchronous Ordering in a Eutectic High‐Entropy Alloy

open access: yesAdvanced Science, EarlyView.
Phase‐resolved experiments and atomistic simulations reveal asynchronous ordering behaviors in a eutectic high‐entropy alloy during isothermal annealing. Distinct defect transport mechanisms are identified in coexisting B2 and BCC phases, showing that vacancy and interstitial mediated diffusion governs phase‐dependent thermal stability.
Huiwen Yao   +5 more
wiley   +1 more source

Lula na África

open access: yesMeridiano 47, 2011
A presente análise tem como foco analisar os possíveis rumos da política exterior brasileira no que tange às relações com a África.
Wolfgang Döpcke
doaj  

Is there a Brazilian solution for every African problem? Brazilian Health Cooperation in Angola (2006-2015)

open access: yesCarta Internacional, 2016
The international system in general, and the international cooperation for development specifically, have been through important changes in the last decades.
Paulo Esteves   +2 more
doaj   +1 more source

Observation of Excitonic Instability in a Monolayer Ta2NiSe5 With Strain Disorder

open access: yesAdvanced Science, EarlyView.
Monolayer Ta2${\rm Ta}_2$NiSe5${\rm NiSe}_5$ sustains an excitonic insulating phase up to 190 K, with Raman signatures of gap opening and critical excitonic fluctuations. Thickness‐independent large gap ratios highlight strong exciton‐phonon coupling, while substrate‐induced strain disorder depresses Tc, establishing monolayer Ta2${\rm Ta}_2$NiSe5${\rm
So Young Kim   +13 more
wiley   +1 more source

Brazilian and Chinese Cooperation in African Agriculture. A Practice-based Study

open access: yesÍconos, 2013
In this article we analyze Brazilian and Chinese practices in terms of cooperation in Africa, focusing on the agricultural sector. While a great deal of work has analyzed the engagement of these emerging players from an international relations ...
Frédéric Goulet   +2 more
doaj   +1 more source

South Carolina Regional Councils of Governments directory, 1995

open access: yes, 1995
The ten regional councils in South Carolina are voluntary associations of local governments formed in accordance with State law to provide a method for intergovernmental coordination and cooperation on the local level.
South Carolina Regional Councils of Government   +1 more
core  

CO2‐Assisted Hydrolysis of NaBH4: A Multi‐Function Platform for Enhanced Hydrogen Release, Regeneration of NaBH4, and CO2‐to‐CH4 Conversion

open access: yesAdvanced Science, EarlyView.
CO2 significantly accelerates hydrogen release from aqueous NaBH4 without metal catalysts, eliminating the need for downstream separation. Ball‐milling the hydrolytic products with Mg regenerates NaBH4 with yields exceeding 76% while simultaneously producing methane.
Rui Han   +8 more
wiley   +1 more source

Flexoelectricity in Photoconversion: Fundamentals, Materials, and Outlooks

open access: yesAdvanced Science, EarlyView.
Mechanical bending of a flexible cantilever induces a strain gradient in the photoactive material. The resulting flexoelectric field couples with photovoltaic and photoconductive effects, modulating charge generation, separation, and collection. A comparative analysis of oxide perovskites, halide perovskites, and two‐dimensional materials is presented,
Xiang Huang, Feng Li, Rongkun Zheng
wiley   +1 more source

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