Uso de las tecnologías como medio de apoyo en el proceso de enseñanza–aprendizaje

A study is carried at the Medical Sciences faculty of Guantánamo "Rafael García Moreaux" in order to identify the use of technology as a mean of support in the teaching-learning process, in 2009. The investigation showed that the use of technology by teachers is inefficient. Teachers today must undertake the task of overcoming, prepare teaching means and find information for the universalization learning process, which show the students as agent of the learning process and manager of his own knowledges.Se realiza un estudio en la Filial de Ciencias Médicas de Guantánamo “Rafael García Moreaux” con el objetivo de identificar el uso de las tecnologías como medio de apoyo en el proceso de enseñanza–aprendizaje, durante el año 2009. La investigación realizada arrojó que el uso de la tecnología por parte los docentes es poco eficiente. Los docentes de hoy deben emprenden la tarea de superarse, confeccionar medios de enseñanza y buscar información para el proceso de universalización de la enseñanza., el cual concibe al estudiante como agente del proceso y gestor de su propio conocimiento

CHANGING THE STRUCTURAL STATE OF THE SOIL TAKING INTO ACCOUNT THE COMPACTING EFFECT OF WHEELED TRACTORS

The results of studying the density of addition, porosity and other agrophysical properties of sod-podzolic light loamy soil under the action of running systems of tractors of class 2.0 (MTZ-1221 and JD 6290) are presented. It was found that with one tractor pass, soil deformation spread to a depth of up to 30 cm and 40-60 cm in the horizontal direction, depending on the weight of the tractor. Thus, the density of the arable (0-20 cm) layer of sod-podzolic light loamy soil increases from 1.42 (control) to 1.50 g/cm3 next to the trail of the MTZ-1221 tractor and 1.61 g/cm3 - on the trail of the JD 6290 tractor. In the subsurface (20-30 cm) layer, the addition density increases by 3.3%. With the removal in the horizontal direction, the degree of soil compaction decreased. The purpose of the conducted research was to develop agroecological requirements and to evaluate the complex of machine-tractor units when modeling the repeated long-term systematic impact of tractor propellers on sod-podzolic soil

Influence of fertilizers and sowing dates on yield and quality of amaranth (Amaranthus l.) variety kizlyarets grown on the non-chernozem soils of the Russian Federation

Amaranth is a high-protein crop with increased nutritional and pharmacological value, characterized by drought resistance, tolerance to saline, alkaline and acidic soils, increased productivity of seeds and leaf biomass with a high content of biologically active substances with antioxidant activity. One of the main problems that arise when introducing high-protein agricultural plants into the culture is their adaptive ability to grow in this region. Knowing all the usefulness of this plant, it was necessary to study the introduction of amaranth in the conditions on the Non-Chernozem zone of the Russian Federation. In 2018 and 2019, studies were conducted on the possible introduction of the amaranth variety ‘Kizlyarerts’ in the Kaluga region of Russia, in order to study the effect of the accumulation of useful macro, micro and meso elements in grain. The experiment included two factors, factor A-different mineral nutrition systems, and factor B-different seeding dates. It was revealed that the efficiency of growing amaranth for grain directly influenced by timing of seed sowing and the systems of mineral nutrition. The use of complex fertilizers and the trace element calcium contributed to an increase in relation to similar nutrition systems without calcium from 15 to 25 %. However, in comparison to the control version of the experiment, the increase in yield was in the range of 50-161%. In general, studies showed that the application of certain fertilizers and compliance with the timing of seed sowing allow to get high yields with high-quality biochemical indicators of grain. © 2021, Gaurav Society of Agricultural Research Information Centre. All rights reserved

Segetal complex – pioneer stages of syntrophic communities in the Meshchovskiy Opole of the non-Chernozem Zone of Russia

In the conditions placor soil Meshchovskiy Opole the Central economic region of the Nonchernozem zone of the Russian Federation on agro-gray forest middle loamy soils defined by the main species composition of segetal complex field agrophytocenoses in the structure of five fields grain and grain-grass crop rotation in the limit of syntaxon Stellarietea mediae R. Tx. et al. ex von Rochow 1951. The combinations of weed and field species specific to field crops are established and the influence of minimization of basic tillage is shown, including No-till, and applying calculated norms of mineral fertilizers (NPK) on the dynamics of the species composition and number of the main components of the segetal complex is shown. The original synanthropic plant communities on the fallow lands of Meshchovsky Opole develop from the segetal complex of previous agrophytocenoses. The core of the cenoflora is represented by 104 species of higher herbage plants from 29 families. Synanthropic communities have a low species saturation – 8 species per 100 m2 and a projection coverage of 57.6%. In acesite territories the advantage is given to the types of anemochory edificatory. Phytomass of secondary phytocenoses without comprehensive measures to improve their floristic composition cannot be used for bulk feed productio

Barriers to accessing substance abuse treatment in Mexico: national comparative analysis by migration status

BACKGROUND: We examined Mexican migrants’ perceived barriers to entering substance abuse treatment and potential differences by gender. METHODS: This study analyzed a subset of household data collected in Mexico in 2011 via the Encuesta Nacional de Adicciones (National Survey of Addictions). A sample of 1,143 individuals who reported using illicit drugs was analyzed using multivariate negative binomial models to determine direct and moderated relationships of gender, migrant status, and drug dependence with perceived barriers to accessing treatment. RESULTS: Significant findings included disparities in drug dependence by migrant status. Compared with non-migrant men, women who have traveled to the United States was associated with fewer (1.3) barriers to access treatment. Fewer barriers to access care were associated with individuals residing in other regions of the country, compared to those living in Mexico City. CONCLUSIONS: Drug dependence, gender, migration status and regional location are factors associated with access to needed treatment. Implications for health care policy to develop treatment services infrastructure and for future research are discussed in the context of ongoing drug policy reform in Mexico