Buscar recursos académicos

Materias / palabras clave: Historia

In Functional Discourse Grammar, both Ascription and Reference are characterized as actional processes and are captured at the Interpersonal Level of linguistic description. Additionally, the temporal sequencing of Disco...

La estación del ferrocarril de Picaleña tiene cien años de existencia. A su alrededor se ha generado un proceso de expansión urbana que condujo al fenómeno de conurbación. Se estudiaron...

137Cs can be an important environmental contaminant due to fallout from nuclear reactor accidents and atomic weapons testing. Its contribution to the air gamma dose rate at 1 m height above contaminated ground depends on...

Amphibian populations are declining globally. In this scenario, detailed informationon their ecology is crucial to determine the status and extinction risk of their populations and,therefore, better plan conservation act...

O artigo examina as insuficiências da literatura recente sobre a reforma econômica nos países em desenvolvimento e esboça um enfoque analítico alternativo.The shortcomings of recent literature on economic reforms in...

Institutions such as World Health Organization and United Nations have considered the necessity to establish programs to control and preserve our environment. From the beginning, industrial development has polluted the a...

Examinam-se os limites e o significado da controvérsia entre "realistas" que invocam fatos e "cosmopolitas" que invocam normas, com referência às perspectivas da ordem internacional após 11 de setembro de 2001. Contr...

O PROBLEMA da relação entre idéias e políticas tem suscitado vivo debate nas Ciências Sociais. Inscreve-se nesse quadro a discussão travada no Brasil a respeito da continuidade/descontinuidade entre a teoria da dep...

The article describes the first occurrence of hepatic coccidiosis in catfish of the species Brachyplatystoma vaillantii, captured in the coastal region of the Vigia city, state of Pará, Brazil, caused by species of the ...

Para evaluar la proliferación in vitro de brotes de Agave americana var. oaxacensis, piezas de callo con dos a tres brotes adventicios se establecieron en diversos medios de cultivo con pH 5,8 y consistencia de gel, con...

El artículo estudia la constitucionalización de la protección ambiental en Colombia y su conexión con la formulación de políticas públicas. En este sentido, se parte del reconocimiento del deterioro ambiental como...

Despite the rapid creation of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) vaccines, the precise correlates of immunity against severe Coronavirus Disease 2019 (COVID-19) are still unknown. Neutralizing a...

Background: Risk stratification is a cornerstone of cardiovascular disease (CVD) prevention and a main strategy proposed to achieve global goals of reducing premature CVD deaths. There are no cardiovascular risk scores b...

Abstract Quantum Machine Learning (QML) is emerging as a promising technology for tackling complex computational challenges, although its practical implementation faces significant obstacles owed to the inherent noise in...

Objetivo. Se comparan los nuevos métodos de detección de lesiones preneoplásicas del cérvix–inspección visual con ácido acético (IVAA) e inspección visual con ácido acético y magnificación (IVAM) con el apara...

The study of the pre-Mesozoic geological history of NE Mexico offers the opportunity to reconstruct the processes that occurred at the NW margin of Gondwana. The Huizachal–Peregrina Anticlinorium, which is located west...

Ca2+ and Si2+ treatments confer resistance to biotic and abiotic stresses in many fruits. In sweet cherries, Ca2+ improves shelf life extension during storage, but only CaCl2 is used. On the other hand, there is scarce i...

Anthropogenic climate change is one of the main threats to global biodiversity, with amphibians being among the most vulnerable vertebrate groups. In this context, the IUCN currently lists 69 species of Neotropical glass...

Las altas demandas de agua para la producción agropecuaria, ha generado la necesidad de cuantificar los consumos de este recurso con el fin de establecer medidas de manejo. Por lo cual se realizó un estudio para determ...

The phylum Myxozoa Grassé, 1970, consists of a heterogenous group of around 50 genera that are worldwide disseminated in a wide variety of aquatic media. In the present study, 43 specimens of Pimelodus ornatus were coll...

Investigaram-se as causas da mortalidade de peixes ocorrida em janeiro de 2005 na bacia do Rio São Francisco, Brasil. Edwardsiella tarda foi isolada dos rins de pacu Myleus micans. O isolado, denominado Et-LIS, caracter...

Abstract For the first time in Brazil, Contracaecum australe is recorded parasitizing Phalacrocorax brasilianus (Aves, Suliformes, Phalacrocoracidae) from the Marine Extractive Reserve of Soure on Marajó Island, Brazili...