Results 21 to 30 of about 465 (161)

The Contribution of Entomological Surveillance to the Control of Chagas Disease in Endemic Regions: An Integrative Literature Review

open access: yesTropical Medicine &International Health, Volume 31, Issue 7, Page 832-842, July 2026.
ABSTRACT Chagas disease remains a significant public health challenge in various endemic regions of Latin America. The persistence of vector‐borne transmission highlights the complexity of the issue and the limitations of traditional strategies. In this context, entomological surveillance plays a strategic and multifaceted role, not only in the early ...
Daniel Rodrigo de Lima Gomes   +9 more
wiley   +1 more source

The Key Architects of Brazil's Foreign Policy and the Quest for Multipolarity Under Lula

open access: yesBulletin of Latin American Research, Volume 45, Issue 2, April 2026.
ABSTRACT This article analyses the trajectories and worldviews of three central architects of Brazilian foreign policy during Lula's first two terms—Marco Aurélio Garcia, Samuel Pinheiro Guimarães and Celso Amorim. It argues that their progressive and anti‐imperialist orientations, aligned with the Workers' Party's broader project, were decisive in ...
Tiago Soares Nogara
wiley   +1 more source

The Fluorescent Amyloid Ligand X34 Binding to Transthyretin (TTR) Tetramer and Fibrils: FRET and Binding Constants of a Sequential Two‐step Process

open access: yesChemPhotoChem, Volume 9, Issue 2, February 2025.
A secret of life is molecular recognition; the ability of one molecule to recognize another through weak bonding interactions. Here we investigate a fluorescent amyloid ligand X34 and its binding propensity to two apparently asymmetric binding sites of the amyloidogenic plasma protein transthyretin (TTR), both in its native tetrameric form and as an ...
Marikken Sundnes   +6 more
wiley   +1 more source

A América do Sul em movimento

open access: yesBrazilian Journal of Political Economy, 2008
South America in movement. This paper discusses the prospects for the integration of South America, stressing that there are two competing projects.
Paulo Nogueira Batista Jr.
doaj   +1 more source

Brazil and the institutionalization of South America: from hemispheric estrangement to cooperative hegemony

open access: yesRevista Brasileira de Política Internacional, 2011
This article argues that Brazil went from a posture of estrangement in relation to the hemispheric project represented by the Free Trade Area of the Americas (FTAA) to a strategy of cooperative hegemony aimed at institutionalizing the South American ...
Carlos Gustavo Poggio Teixeira
doaj   +1 more source

Beyond simplistic narratives: Dynamic farmers, precarity and the politics of agribusiness expansion

open access: yesJournal of Agrarian Change, Volume 24, Issue 4, October 2024.
Abstract Agribusiness expansion is usually framed around two competing narratives. On the one hand, advocates present it as a promising vehicle to modernise agriculture and integrate small farmers into global value chains. On the other hand, critics denounce it as a top‐down corporate assault to monopolise agriculture and dispossess peasants of land ...
Enrique Castañón Ballivián
wiley   +1 more source

Domestic coalitions in the FTAA negotiations: the Brazilian case

open access: yesContexto Internacional, 2016
This paper proposes an explanation to the domestic coalitions organised in Brazil around the FTAA negotiations, which stand as a hard case for the existing theories on political cleavages: industrialists and trade unions, albeit having shared common ...
Daniel Castelan
doaj   +1 more source

Amyloid beta 1‐40 and 1‐42 fibril ratios and maturation level cause conformational differences with minimal impact on autophagy and cytotoxicity

open access: yesJournal of Neurochemistry, Volume 168, Issue 9, Page 3308-3322, September 2024.
The amyloid β (Aβ) peptide varies in length between 37 and 49 amino acids, with Aβ1‐42 being the most disease‐related and forms plaques in Alzheimer's disease. Aβ1‐40 also forms plaques and intertwines with Aβ1‐42, but their combined effect is still not clearly understood. Here, we fibrillized different Aβ1‐40:42 ratios and characterized both early and
Lovisa Johansson   +4 more
wiley   +1 more source

A fuzzy decision‐making approach for portfolio management with direct real estate investment

open access: yesInternational Journal of Strategic Property Management, 2009
This study incorporated expert knowledge into the classical quadratic programming approach, i.e., Modern Portfolio Theory (MPT), through fuzzy set theory; in obtaining portfolio return optimization involving direct real estate investment.
Eddie Chi Man Hui   +2 more
doaj   +1 more source

Amino‐Acid Side‐Chain Nanoarchitectonics for Tuning the Chiroptical Properties and Supramolecular Structure of Pentameric Oligothiophenes

open access: yesChemPhotoChem, Volume 8, Issue 7, July 2024.
Self‐assembled Proteophenes. Oligothiophenes with distinct amino acid side‐chain functionalities along the conjugated backbone displayed distinct chiroptical and structural properties in acidic or alkaline solutions. The distinct photophysical characteristics, as well as the supramolecular structures of the assemblies were highly influenced by the ...
Linnea Björk   +5 more
wiley   +1 more source

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