Variations in quantitative vessel element characters of Juglans regia L. wood were studied in relation to altitude and growth-ring width. Multiple regression analysis using altitude and growth-ring width as independent variables were performed. Significant correlations were obtained for tangential vessel…

This paper reports on designs for effective uses of ICTs in teaching and learning in teaching education. Applying Engeström's schema (1987) at three different levels of use of the computer as a cultural tool, three sociocultural accounts, each one reflecting…

Until September 11, 2001, Canadians had not thought very much or very hard about the long border they share with the United States. Nor had public authorities shown significant concern. There was no compelling imperative to contemplate it, particularly in…

The general aim of this presentation is to explore how video games, supported by conversations and theatrical performances in the classroom, contribute to the development of narrative thought as present in written compositions. Given that one of the primary ecological…

After the events of 9/11/01, the United States rallied around President George W. Bush. An administration that was initially weak and semi-legitimate came to directly control the executive and legislative branches of government and gradually strengthen its influence over the…

OBJECTIVE: This systematic review aims to synthesize articles, abstracts and reports of HIV prevalence studies conducted among men who have sex with men (MSM) and female sex workers (FSW) in Latin America and the Caribbean (LAC). MATERIALS AND METHODS: Authors…

This article analyzes Giorgio Morandi's works and trajectory with regard to his participation in both the Italian Metaphysical School and the regional group of Strapaese. His self-portraits and still lifes show that Morandi's articulation of a metaphysical aesthetic engaged with…

Oat (Avena sativa L.) is a cereal grain, its seeds are rich in nutrients, is consumed as whole grain with health benefits fot humans due to its antioxidants, such as the avenanthtamides (Avns). The contents of Avns 2c, 2f and…

The prawn shrimp Macrobrachium tenellum is a potential species for culture in México. The effect of ammonia on larvae was evaluated to provide basic information on safe levels for larviculture. A 72 h static assay was performed on 5 days…

Fusarium head blight is an important disease attacking wheat (Triticum spp.), barley (Hordeum vulgare) and other grains worldwide. Among the Fusarium species causing this disease, Fusarium poae is less often implicated, but is a fungus of increasingly recognized importance and…