13. Characterization of Nanocellulose Obtained from Cereus Forbesii (a South American cactus)

Crystalline cellulose nanofibers are obtained from the bark of Cereus Forbesii, a cactus native to the arid areas of South America. The obtaining of cellulose nanofibers was carried out in several steps: pretreatment of the raw material, elimination of hemicellulose and lignin to obtain cellulose, and an acid hydrolysis of cellulose to obtain crystalline cel

Mat. Res.. Publicado em: 20/01/2020

14. A new oligolectic bee species of the genus Rhophitulus Ducke (Hymenoptera, Andrenidae) from South Brazil

ABSTRACT The genus RhophitulusDucke, 1907 is a large and complex group of bees of the tribe Protandrenini comprising small, slender, mostly black ground-nesting species that are restricted to South America. We describe a new species of Rhophitulus from Parque Nacional São Joaquim, Urubici, state of Santa Catarina, Brazil. Rophitulus ater sp. nov. is distinc

Rev. Bras. entomol.. Publicado em: 13/01/2020

15. The austral-most record of the genus Haemagogus Williston (Diptera: Culicidae)

Abstract INTRODUCTION: The genus Haemagogus Williston is restricted to Central America and North and middle of South America and it includes numerous species of yellow fever virus vectors. METHODS: Adult female and larvae mosquitoes were collected using hand aspirators and dipper and pipette, respectively. RESULTS: The first record of a species of Haema

Rev. Soc. Bras. Med. Trop.. Publicado em: 20/12/2019

16. Multiple resistance to glyphosate and imazethapyr in Bidens subalternans

RESUMO O glyphosate vem sendo amplamente utilizado para o controle de populações de picão-preto resistentes a inibidores da acetolactato sintase (ALS) na América do Sul. No entanto, falhas de controle foram observadas no campo nas três últimas safras em áreas de produção de grãos no Paraguai. Neste trabalho, nós relatamos o primeiro caso de resist

Ciênc. agrotec.. Publicado em: 20/12/2019

17. Translating the Rules of Football in South America, 1863-1914

Resumo Este artigo explora o início da história da Association Football na América do Sul através do estudo de caso das primeiras traduções das regras do jogo do inglês para o português e o espanhol. Demonstra, por meio de uma comparação das diferentes temporalidades e contextos desses documentos, a natureza conectada e transnacional do esporte. Is

Estud. hist. (Rio J.). Publicado em: 13/12/2019

18. Segurança alimentar e nutricional na América do Sul e BRICS: avanços e “nuvens” no horizonte

Resumo O artigo parte da tese de que o sistema capitalista global é intrinsecamente desigual. Esta tese é sustentada na concepção marxista e está presente nos trabalhos de Arrighi (1995), Marini (2000), Santos (2004) e Bambirra (2015), dentre outros autores. Os dados de base são os do desempenho das economias nacionais. Há uma problematização dessa

Econ. soc.. Publicado em: 13/12/2019

19. Characterization of biochemical compounds and antioxidant activity of “dedo-de-moça” chili pepper accessions

RESUMO Capsicum baccatum é uma das principais espécies de pimenta cultivadas e consumidas na América do Sul. No Brasil, C. baccatum var. pendulum é amplamente cultivada, especialmente a pimenta do tipo “dedo-de-moça”. Para a maioria das culturas hortícolas, incluindo as espécies de Capsicum, a diversidade genética permanece subexplorada para cara

Hortic. Bras.. Publicado em: 09/12/2019

20. HANS STAMMREICH: UMA PERSPECTIVA HISTÓRICA

The introduction of Raman spectroscopy in South America and the development of techniques which allowed the use of radiation in the red and near infrared are discussed in this work, highlighting not only the technical aspects but also the European political and social contexts in the 1930s. When the Nazis came to power in 1933, thousands of jewish scientists

Quím. Nova. Publicado em: 05/12/2019

21. First record of growth rings for 11 native subtropical anuran species of South America

Abstract: Skeletochronology is the most accurate method to estimate a population age structure. The methodology is based on the analysis of secondary bone tissue in order to count growth rings. This study aimed to provide initial data, allowing researchers to further work out in the age of individuals and populations, sampling evidence of the presence of gro

An. Acad. Bras. Ciênc.. Publicado em: 02/12/2019

22. Effect of canopy cover on development of cedar (Cedrela fissilis) and aspects of damage caused by Hypsipyla grandella in agroforestry system

Resumo Cedrela fissilis (Vell.) é uma importante espécie madeirável nativa da América do Sul que sofre frequente pressão do extrativismo ilegal. As iniciativas de cultivo comercial acumulam fracassos recorrentes pela ação da broca-do-cedro Hypsipyla grandella (Zeller, 1848). Um dos métodos de manejo utilizados para reduzir os ataques é o plantio em

Ciênc. Florest.. Publicado em: 02/12/2019

23. Ecological niche modeling of Schinus molle reveals the risk of invasive species expansion into biodiversity hotspots

Abstract: Invasive species need a closer look on the threats they may cause to the environment, mainly considering the scenario of climatic changes predicted for the next decades. Schinus molle is a pioneer tree native from South America, reported as an important invasive species in four continents. Using ecological niche modeling we show that a wide area ov

An. Acad. Bras. Ciênc.. Publicado em: 28/11/2019

24. Xenochlora meridionalis sp. nov. (Hymenoptera: Apidae), a new halictine bee from eastern Brazil as evidence of past connections between Amazonia and Atlantic Forest

ABSTRACT We describe a new species of the bee genus Xenochlora Engel, Brooks & Yanega, 1997, X. meridionalis sp. nov., based on a single female collected in the coastal forests of southeastern Brazil, in the state of Espírito Santo. The disjunct distribution exhibited by Xenochlora, with species in northern South America and in the Atlantic Forest of easter

Zoologia (Curitiba). Publicado em: 25/11/2019