Sistema Regional de Información
en línea para Revistas Científicas de América Latina,
el Caribe, España y Portugal

It addressed the types of audiovisual media in the training process, the skills and importance given to both students and teachers, through the appropriate use of overhead projectors, computers, televisions, recorders, flipcharts, boards in the Zootechnic Engineering major, URACCAN, Nueva Guinea Campus, II semester 2008. The focus was qualitative and descriptive, framed in referring the use of audiovisual media used by the teaching staff in the career of animal husbandry, which together with the student community formed our unit of analysis. It is cross-sectional, second semester of 2008. Information was obtained through observation, interviews and focus groups. The findings indicated that the timely administration of audiovisual media in teaching allows the consolidation of significant learning as long as it focuses on the integral formation of the individual. It was found that the teaching staff is aware of the relevance of these tools when facilitating their conferences or listening to the presentations made by the student community. However, granting that the equipment is available, in most cases there is some resistance to its use.

The study addressed the learning styles in students and teaching approaches in the Agroforestry Engineering major, University of the Autonomous Regions of the Nicaraguan Caribbean Coast -RAAN-, Las Minas University Campus, 2008. The methodology that supported this research has qualitative approach with an ethno methodological method, individual interviews and observation, the data that was provided by the study subjects was collected, processed and analyzed. The results revealed that the styles in the teaching processes correspond to divergent styles and they are developed around two approaches namely: the transmissive and the constructivist. The first predominates in the majority of teachers and the last in a minority. The relationship between teaching approaches and learning styles occurs at a non-significant level with respect to the characteristics of the identified styles. Noting that none of the teachers interviewed knows the learning style of their students.

With the purpose of evaluating the wheat grain and wheat flour contamination by Deoxynivalenol (DON) in the municipality of Chapeco-SC, and standardizean useful method to detect this mycotoxin by High Performance Liquid Chromatography (HPLC), six samples of wheat grains from different storage location, and one sample of wheat grain from the flour milling industry were obtained during in the month of august 2008. Samples belong to a corporation from Chapeco- SC that stores and processes wheat grains, flour and wheat middlings, among other products. The extraction has been carried out with methanol: water (100: 100 v / v), filtered paper filter and applied in immunoaffinity column specific DON. After the wash with water column, the toxin was eluted with methanol. The detection and quantification Deoxynivalenol in samples was carrid out through the method of HPLC in the UV -visible withdetection 244 nm. The 6 analyzed samples of wheat grain showed DON levels within 7.0 and 10.1 ppb, while the wheat flour contained 90.2 ppb.DON contents in wheat grains and wheat flour are lower than the limits claimed by the studied corporated importers and the international legislation. 

La finalidad de este trabajo fue la obtención de basidiocarpos (setas), por lo cual se diversificó el cultivo de hongos comestibles Basidiomycetes, siguiendo los objetivos del proyecto FONDEF D05I10196. Para ello, se utilizaron diferentes sustratos agronómicos y forestales sin valor comercial (paja de trigo, aserrines, astillas de maderas, etc.). Partidas del respectivo sustrato fueron pasteurizadas por 3 horas, luego en forma independiente se depositaron en bolsas de nylon (7 K) y se sembraron con la «semilla» del hongo a ensayar , las bolsas fueron incubadas hasta la obtención de basidiocarpos. Se obtuvieron fructificaciones de: Agrocybe aegerita en aserrín de álamo (pero no el de pino), Flammulina velutipes y Hericium erinaceum en aserrín de Nothofagus spp. y paja de trigo y Pholiota nameko en aserrín de pino y astillas de pino.

La finalidad de este trabajo fue la obtención de basidiocarpos (setas), por lo cual se diversificó el cultivo de hongos comestibles Basidiomycetes, siguiendo los objetivos del proyecto FONDEF D05I10196. Para ello, se utilizaron diferentes sustratos agronómicos y forestales sin valor comercial (paja de trigo, aserrines, astillas de maderas, etc.). Partidas del respectivo sustrato fueron pasteurizadas por 3 horas, luego en forma independiente se depositaron en bolsas de nylon (7 K) y se sembraron con la «semilla» del hongo a ensayar , las bolsas fueron incubadas hasta la obtención de basidiocarpos. Se obtuvieron fructificaciones de: Agrocybe aegerita en aserrín de álamo (pero no el de pino),Flammulina velutipes y Hericium erinaceum en aserrín de Nothofagus spp. y paja de trigo y Pholiota nameko en aserrín de pino y astillas de pino.

Se realizó un recuento de las esporas de Botrytis cinerea en la atmósfera de un viñedo de la comarca del Ribeiro (Galicia, España), durante tres años consecutivos. Para explicar su abundancia, dicha información se ha relacionado con las fases fenológicas de la vid y con la influencia que los principales parámetros meteorológicos ejercen sobre el contenido fúngico. Tras el estudio estadístico de los datos se ha elaborado un modelo predictivo (regresión polinomial) de la concentración de dichas esporas en la atmósfera.

The purpose of this article is to give an account of how trade unionism in the state of Jalisco has managed to prevail despite the institutional crisis of the state, the internal conflicts of the central workers, the privatization of parastatals and the persistent attempts of disappearing the groups of workers, as a purpose of the Mexican State to minimize one of the institutions that gave legitimacy to some local governments during the decades of the forties until the eighties.

The father of cognitive style, Hermann Witkin, so called for his contributions to the development of a theory of cognitive styles of field-dependence, field independence; He was the first to conceptualize a cognitive differentiation related to performances before tasks that different people could solve with different strategies. The design of their laboratory situations has transcended to teaching practices and diverse applications. This article presents the meaning of these practices and their transcendence.

To know the evolution of the spatial structure of the town of San Felipe from the viceroyalty to independence and until its erection as a city, it is necessary to identify and analyze the agents of the organization and socio-spatial change. The present study aims to understand and explain the territorial evolution suffered by the Villa de San Felipe since its foundation (1562), until its territorial reorganization (1852), where the main neighbors and members of the town council that in their privileged position became the main agents of socio-spatial change.

The ideas suggested here were the product of field work and deal with the absence of theoretical elements for the treatment of material culture. It is a review of the materialist and idealist positions and the lack of explanatory methods and frameworks for their study. It appeals to archeology, since it is its object of study, although it is pointed out that its objectives are different from those of social anthropology. Finally, two possible lines of action for the study of material culture are established: simulation models and fractals. Support for the screen reader has been enabled.