Estrategias de aprendizaje y su relación con el aprendizaje en el área de ciencia y tecnología en el nivel secundaria de una Institución Educativa de la UGEL 01 San Juan de Miraflores, Lima, 2018

El objetivo central del presente estudio de fue determinar la relación que existe entre las estrategias de aprendizaje y el aprendizaje en el área de ciencia y tecnología en el nivel secundaria de una Institución Educativa de la UGEL 01 San Juan de Miraflores, Lima, 2018. La investigación por su orientación metodológica le corresponde un enfoque cuantitativo, con un tipo de investigación sustantiva o de base, diseño descriptivo correlacional y método hipotético deductivo. La muestra se constituyó con 32 estudiantes del quinto grado de educación secundaria. Para responder a las interrogantes planteadas como problemas de investigación y cumplir con los objetivos de este trabajo, se recabó la información correspondiente, utilizando la técnica de la encuesta y los instrumentos correspondientes fueron: Cuestionarios sobre estrategias de aprendizaje y las actas de calificación del área curricular de ciencia y tecnología. El proceso de validez y confiabilidad de los instrumentos se realizó; respectivamente, a través del criterio de juicio de expertos y el coeficiente de Alfa de Cronbach. Los resultados fueron los siguientes: Existe relación significativa entre las estrategias de aprendizaje, a nivel total y por la dimensión: Adquisición de información, codificación de información, recuperación de información y apoyo a la información, y el aprendizaje en el área de ciencia y tecnología en nivel secundaria de una Institución Educativa de la UGEL 01 San Juan de Miraflores, Lima, 2018.The main objective of the present study was to determine the relationship between learning and learning strategies in the area of science and technology at the secondary level of an Educational Institution of the UGEL 01 San Juan de Miraflores, Lima, 2018. Research Due to its methodological orientation, a quantitative approach corresponds to it, with a type of substantive or basic research, correlational descriptive design and deductive hypothetical method. The sample consisted of 32 students in the fifth grade of secondary education. To answer the questions raised as research problems and meet the objectives of this work, the corresponding information was collected, using the survey technique and the corresponding instruments were: Questionnaire on learning strategies and the qualification records of the curricular area of science and technology. The process of validity and reliability of the instruments performed; respectively, through the judgment of experts and the Cronbach Alpha coefficient. The results were the following: There is a significant relationship between learning strategies, at the total level and by the sessions: Acquisition of information, information coding, information retrieval and support for information, and learning in the area of science and technology at the secondary level of an Institution Education of the UGEL 01 San Juan de Miraflores, Lima, 2018

Socio-Ecological Regionalization of the Urban Sub-Basins in Mexic

Mexico is a diverse country in terms of culture and natural environments. For this reason, the delimitation of homogeneous basins with similar environmental, social, and economic attributes is important in order to facilitate the elaboration of high-impact regional development strategies. However, this represents an ongoing challenge due to the complexity of the interactions that occur within socio-ecological systems at a regional scale. In the present study, the main objective was to identify the interrelationships among different aspects of the socio-ecological system located within basins, with the goal of utilizing this information to promote the region-specific sustainable development of an Integrated Water Resources Management (IWRM). Therefore, in this study, environmental, social, economic, and institutional variables, relevant to water management and with thecapacitytobeexpressedspatially,wereutilizedtoidentifyregionswithsimilarcharacteristicsand to regionalize the urban sub-basins of Mexico based on a principal component analysis (PCA) and the k-medoids clustering algorithm. The identification of the most adequate number of regions at the national level was determined by the silhouette method. As a result, five distinct regions for Mexico were generated, which forms the first step in the design of integrated water resources management strategies for these regions.Universidad Autónoma del Estado de MéxicoConsejo Nacional de Ciencia y Tecnología (CONACyT-México

PET de desecho y su uso en concreto

En este capítulo se describen investigaciones sobre el uso de la radiación como tecnología alternativa para la modificación fisicoquímica de PET de desecho y su uso en el concreto, como sustituto de los agregados minerales utilizados, con el fin de mejorar las propiedades mecánicas del mismo. Con esto se promueve la disposición a largo plazo del PET en países en vías de desarrollo

Dysfunctional mechanotransduction through the YAP/TAZ/Hippo pathway as a feature of chronic disease

In order to ascertain their external environment, cells and tissues have the capability to sense and process a variety of stresses, including stretching and compression forces. These mechanical forces, as experienced by cells and tissues, are then converted into biochemical signals within the cell, leading to a number of cellular mechanisms being activated, including proliferation, differentiation and migration. If the conversion of mechanical cues into biochemical signals is perturbed in any way, then this can be potentially implicated in chronic disease development and processes such as neurological disorders, cancer and obesity. This review will focus on how the interplay between mechanotransduction, cellular structure, metabolism and signalling cascades led by the Hippo-YAP/TAZ axis can lead to a number of chronic diseases and suggest how we can target various pathways in order to design therapeutic targets for these debilitating diseases and conditions

Regional analysis of climate variability at three time scales and its effect on rainfed maize production in the Upper Lerma River Basin, Mexico

Rainy season use to be from May to September and actually is from June to September. Rainy season use to be from May to September and actually is from June to September. In the region, the most determinant factor for maize crop losses is the water deficit.This study explored climate variability in the Upper Lerma River Basin, State of Mexico, Mexico, at three timescales: annual (1960–2010), monthly (1980–2010) and seasonal (1980–2010). The effects of monthly and seasonal (2003–2010) variability on rainfed maize crops were also evaluated. The variables of rainfall, maximum temperature, minimum temperature and number of hailstorms were interpolated to generate monthly spatial-temporal series. Over a period of 51 years, the climate of the region shows an accumulative annual increase of 131 mm in rainfall and an increase of 0.8 and 0.74 °C in maximum and minimum temperature, respectively. In conclusion, significant changes in the climate variables were found at the three analyzed timescales. Seasonal climate changes were found to coincide with the most vulnerable stage or flowering period of maize; particularly, a shift in the rainfall pattern generates a water deficit that impacts production yield. Hailstorms have increased in frequency, yet their phase shift results in a lesser impact to maize during its most critical stage of development.This study was financed by the Basic Science research project, SEP-CONACYT “Mesoamerican Corn and Scenarios for Local development (El maíz473 mesoamericano y sus escenarios de desarrollo local), No. 130947. The authors also wish to thank the two anonymous reviewers and their comments for improving and restructuring the manuscript in order to highlight the results of this research

Unscheduled DNA synthesis after partial UV irradiation of the cell nucleus

Cells of an euploid strain of the Chinese hamster synchronized in the G1 phase were microirradiated in the nucleus with a laser UV microbeam (λ = 257 nm) and pulse-labelled with [3H]thymidine. In autoradiographs of cells fixed immediately after the pulse unscheduled DNA synthesis (UDS) was found restricted to the microirradiated part of the nucleus. The rate of UDS varied with the UV energy applied and the post-irradiation incubation time. In other experiments chromosome preparations were established after an additional chase and a subsequent growth period. In 28 mitotic cells autoradiographic label was found concentrated on a few chromosomes which lay adjacent to each other in one part of the metaphase plate. The distribution of label on the chromosomes could clearly be distinguished from patterns which originate from semi-conservative DNA synthesis within S phase. The label on chromosomes of microirradiated cells thus represents UDS. Our findings support the following ideas on the arrangement of interphase chromosomes: (1) Decondensed interphase chromosomes may occupy rather compact territories. (2) Chromosomes do not necessarily exhibit a close and permanent association with their respective homologues

Análisis de dos cultivares de trigo con introducción del gen HaHB4

El objetivo de esta nota es compartir algunos de los resultados preliminares de comparar variedades de trigo con y sin la incorporación del gen HaHB4 cultivados en condiciones representativas de la región semiárida central argentina.Fil: Cardosso Perasi, Matias. Universidad Nacional de La Pampa. Facultad de Agronomía; ArgentinaFil: Montiel, L.. Universidad Nacional de La Pampa. Facultad de Agronomía; ArgentinaFil: Dillchneider Loza, Alexandra. Universidad Nacional de La Pampa. Facultad de Agronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Dalmasso, Lucas Pablo. Universidad Nacional de La Pampa. Facultad de Agronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Gonzalez, Fernanda. Instituto Nacional de Tecnología Agropecuaria; ArgentinaFil: Diaz Zorita, Martin. Universidad Nacional de La Pampa. Facultad de Agronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin

La antropología en la planificación regional como elemento para la gestión integrada de recursos hídricos

Aquí se considera que los escritos de Ángel Palerm sobre Planificación, son una excelente herramienta de introducción a la Gestión Integrada de los Recursos Hídricos (GIRH). De allí que el objetivo de este trabajo sea la revisión e identificación de las principales propuestas palermianas sobre los conceptos y herramientas de cómo llevar a cabo la planificación y el desarrollo, con el fi n de presentarlos como una introducción y reflexión a la gestión integrada de los recursos hídricos (GIRH). Para lograrlo, se analiza el material y los documentos reunidos y publicados de Ángel Palerm sobre el tema, que datan desde 1950 hasta 1980, ordenando los casos, los conceptos, las herramientas y las formas metodológicas que Palerm utilizó para la planificación

Enfrentando los riesgos socionaturales

El objetivo del libro es comprender la magnitud de los Riesgos Socionaturales en México y Latinoamérica, para comprender el peligro que existe por algún tipo de desastre, ya sea inundaciones, sismos, remoción en masa, entre otros, además conocer qué medidas preventivas, correctivas y de contingencias existen para estar atentos ante alguna señal que la naturaleza esté enviando y así evitar alguna catástrofe. El libro se enfoca en los aspectos básicos de análisis de los peligros, escenarios de riesgo, vulnerabilidad y resiliencia, importantes para la gestión prospectiva o preventiva