960 resultados para Unités évolutives significatives
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Libro de apoyo a los alumnos de bachillerato en el área de la Física. Abarca los siguientes temas: radioactividad, energía nuclear, física térmica, astrofísica, física médica, física aplicada e hitos en la historia de la física. Incluye también una sección para la preparación de los exámenes oficiales con ayudas sobre el funcionamiento de la ciencia, el uso de algoritmos y logaritmos, datos y fórmulas, preguntas similares a los exámenes oficiales, y respuestas, explicaciones y consejos para la superación de las pruebas.
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Guía de revisión en el área de la biología para estudiantes que estén preparando el examen OCR (Oxford Cambridge and RSA Examinations) en el nivel AS y A2 (enseñanza secundaria de segundo ciclo). El libro está dividido en tres secciones: una introducción sobre como utilizar la guía; una orientación sobre las habilidades, procedimientos y terminología necesarias para el desarrollo de los ejercicios prácticos del examen, explicadas basándose en ejemplos de casos que pueden aparecer en la prueba; y un apartado final con ejemplos de ejercicios y dos posibilidades de respuestas (correctas y con errores típicos) comentadas y valoradas por un examinador.
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Guía de revisión y apoyo para alumnos de educación secundaria de segundo ciclo que estén realizando el curso del OCR (Oxford Cambridge and RSA Examinations) en los niveles AS y A2 del área de química. Está estructurada en cuatro secciones que presentan una serie de consejos generales sobre cuestiones relacionadas con el trabajo práctico (obtención, registro y proceso de resultados en experimentos prácticos), un apartado de orientación para la realización de investigaciones individualizadas, un apéndice con algunos temas de teoría útiles en la investigación, y una sección final con las soluciones a las preguntas y ejercicios que aparecen a lo largo del libro.
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Guía de apoyo para alumnos de educación secundaria de segundo ciclo que sigan la especificación de Edexcel en los niveles AS y A2 del área de química. Su objetivo es la consecución de las habilidades de laboratorio necesarias para la realización de experimentos a lo largo del curso (competencia práctica, observaciones cualitativas en compuestos orgánicos e inorgánicos, medición cuantitativa, preparación de compuestos orgánicos e inorgánicos). Incluye comentarios de un examinador explicando las respuestas de los ejercicios y destacando los errores más comunes, y una sección con ejemplos y soluciones de experimentos, ejercicios y preguntas que los alumnos pueden encontrar en el curso.
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Guía de apoyo para alumnos de educación secundaria de segundo ciclo que realicen el curso del OCR (Oxford Cambridge and RSA Examinations) en los niveles AS y A2 del área de química. Está estructurada en una introducción con consejos generales sobre el uso de la guía y la realización de trabajos prácticos, y tres secciones dedicadas a la realización de experimentos: tareas cualitativas (observar los resultados de un experimento, registrarlos y realizar inferencias simples), tareas cuantitativas (desarrollar un experimento, realizar mediciones, registrar los resultados y usarlos para sacar una conclusión), y tareas de evaluación (interpretando los resultados y valorando los puntos débiles del procedimiento usado y las medidas tomadas). Se incluyen ejemplos en cada sección.
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Resumen basado en el de la publicaci??n
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There are several aggressive factors in Intensive Care Units (ICU), which reach not only patients, but the nursing caregivers, since they participate in complex procedures and death of patients. Nursing caregivers may have difficulties on their daily work routine that can influence the way of care. The goal of this study was to identify the aspects of nursing caregivers working in adult ICU. It is a describe-exploratory study with qualitative approach, developed among 21 ICU adult nursing caregivers of a school hospital in Paraná. The data were collected in May and July, 2009 by recorded and transcribed semi-structured interviews. Four categories for analysis were identified: the aspects of ICU assistance, the meaning of healthcare for the nursing caregivers, the understanding of healthcare positive aspects and disclosing the difficulties of caring. The results revealed that caring is related to some factors such as mixed feelings, the mental and physical damage caused by stress; the understanding of total caring, scientific-technique procedures, family engagement in the assistance and humanization. The positive aspects are related to the welfare due to satisfaction in the work done and recognition of work. The difficulties involved death situations, psychological and biological damages, establishing links with patients and the uncaring toward the nursing caregivers.
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This paper is a collection of four theme-based units to be used to teach beginning science and social studies concepts.
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This paper presents four teaching curriculum units for primary level students based on Simple and Complex TAGS (Teacher Assessment of Grammatical Structures), teaching vocabulary and language structure.
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The research record on the quantification of sediment transport processes in periglacial mountain environments in Scandimvia dates back to the 1950s. A wide range of measurements is. available, especially from the Karkevagge region of northern Sweden. Within this paper satellite image analysis and tools provided by geographic information systems (GIS) are exploited in order to extend and improve this research and to complement geophysical methods. The processes of interest include mass movements such as solifluction, slope wash, dirty avalanches and rock-and boulder falls. Geomorphic process units have been derived in order to allow quantification via GIS techniques at a catchment scale. Mass movement rates based on existing Field measurements are employed in the budget calculation. In the Karkevagge catch ment. 80% of the area can be identified either as a source area for sediments or as a zone where sediments are deposited. The overall budget for the slopes beneath the rockwalls in the Karkevagge is approximately 680 t a(-1) whilst about 150 : a-1 are transported into the fluvial System.
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The delineation of Geomorphic Process Units (GPUs) aims to quantify past, current and future geomorphological processes and the sediment flux associated with them. Five GPUs have been identified for the Okstindan area of northern Norway and these were derived from the combination of Landsat satellite imagery (TM and ETM+) with stereo aerial photographs (used to construct a Digital Elevation Model) and ground survey. The Okstindan study area is sub-arctic and mountainous and is dominated by glacial and periglacial processes. The GPUs exclude the glacial system (some 37% of the study area) and hence they are focussed upon periglacial and colluvial processes. The identified GPUs are: 1. solifluction and rill erosion; 2. talus creep, slope wash and rill erosion; 3. accumulation of debris by rock and boulder fall; 4. rockwalls; and 5. stable ground with dissolved transport. The GPUs have been applied to a ‘test site’ within the study area in order to illustrate their potential for mapping the spatial distribution of geomorphological processes. The test site within the study area is a catchment which is representative of the range of geomorphological processes identified.
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The first IUPAC Manual of Symbols and Terminology for Physicochemical Quantities and Units (the Green Book) of which this is the direct successor, was published in 1969, with the object of 'securing clarity and precision, and wider agreement in the use of symbols, by chemists in different countries, among physicists, chemists and engineers, and by editors of scientific journals'. Subsequent revisions have taken account of many developments in the field, culminating in the major extension and revision represented by the 1988 edition under the simplified title Quantities, Units and Symbols in Physical Chemistry. This 2007, third edition, is a further revision of the material which reflects the experience of the contributors with the previous editions. The book has been systematically brought up to date and new sections have been added. It strives to improve the exchange of scientific information among the readers in different disciplines and across different nations. In a rapidly expanding volume of scientific literature where each discipline has a tendency to retreat into its own jargon this book attempts to provide a readable compilation of widely used terms and symbols from many sources together with brief understandable definitions. This is the definitive guide for scientists and organizations working across a multitude of disciplines requiring internationally approved nomenclature.
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The Bureau International des Poids et Mesures, the BIPM, was established by Article 1 of the Convention du Mètre, on 20 May 1875, and is charged with providing the basis for a single, coherent system of measurements to be used throughout the world. The decimal metric system, dating from the time of the French Revolution, was based on the metre and the kilogram. Under the terms of the 1875 Convention, new international prototypes of the metre and kilogram were made and formally adopted by the first Conférence Générale des Poids et Mesures (CGPM) in 1889. Over time this system developed, so that it now includes seven base units. In 1960 it was decided at the 11th CGPM that it should be called the Système International d’Unités, the SI (in English: the International System of Units). The SI is not static but evolves to match the world’s increasingly demanding requirements for measurements at all levels of precision and in all areas of science, technology, and human endeavour. This document is a summary of the SI Brochure, a publication of the BIPM which is a statement of the current status of the SI. The seven base units of the SI, listed in Table 1, provide the reference used to define all the measurement units of the International System. As science advances, and methods of measurement are refined, their definitions have to be revised. The more accurate the measurements, the greater the care required in the realization of the units of measurement.