Browsing Facultad de Ciencias Exactas y Naturales by Title
Now showing items 1608-1627 of 2557
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La noción de idoneidad didáctica como herramienta para la reflexión de la clase de matemática
Poder realizar una reflexión de lo que ocurre en la clase de matemática es una competencia que debe poseer el profesor en servicio. Esta actividad de reflexión es compleja y más si no se cuenta con una estructura que permita ... -
Landscape analysis for the American crocodile Crocodylus acutus (Reptilia: Crocodilidae) in northwestern Costa Rica
(Instituto de Biología de la UNAM (México), 2022-10-18)Northwest Costa Rica has the largest crocodile population in the country, but it is also an important area of the human population growth, tourism, crops, and aquaculture, that have generated great changes in the region. ... -
LANGUAGE AND A PHYSICAL ORGANIZATION TECHNIQUE FOR SUMMARY TABLES.
(Proceedings of ACM-SIGMOD 1985 International Conference on Management of Data, 2004)A summary table is a tabular representation of summary data, and is a useful data structure for statistical databases. Primitive summary tables are basic building blocks of summary tables, and can be represented as relations ... -
Larvae of the Costa Rican Hetaerina (Odonata: Calopterygidae) with comments on distribution
(Royal Entomological Society, 1993)The larvae of seven of the nine Costa Rican species of Hetaerina (H.capitalis, H.cruentata, H. fuscogutfata, H. majuscula, H. miniata, H. occisa and H. titia) were identified by matching their Cellulose Acetate Gel ... -
Late onset autosomal dominant Charcot– Marie–Tooth 2 neuropathy in a Costa Rican family
(W.S. Maney & Son Ltd., 2009)Objective: To describe the clinical, electrophysiologic and morphologic features of a Costa Rican family with an autosomal dominant inherited Charcot–Marie–Tooth (CMT) neuropathy. Methods: The field study took place in ... -
Latitudinal regionalization of epibenthic macroinvertebrate communities on rocky reefs in the Gulf of California
(Marine Biology Research vol.12 no.4 389-401 2016, 2016-04-27)We report on a latitudinal pattern in the structure and species composition of epibenthic macroinvertebrate communities on rocky reefs along a gradient of eight degrees of latitude in the Gulf of California. We provide ... -
Lead acid battery recycling in Costa Rica: A case study
(WIT Transactions on Ecology and the Environment, 2012)This work describes the production of secondary lead in a smelter located in Costa Rica. The only input of the plant is scrap automotive batteries. We describe the environmental management strategies used for waste ... -
Leaf life span spectrum of tropical woody seedlings: effects of light and ontogeny and consequences for survival
(Oxford University Press, Annals of Botany Company, 2013-03-26)Background and AimsLeaf life span is widely recognized as a key life history trait associated with herbivory resistance, but rigorous comparative data are rare for seedlings. The goal of this study was to examine how light ... -
Learning by making: A framework to revisit practices in a constructionist learning environment
(Blackwell Publishing Ltd, 2021)Makerspaces are collaborative workspaces where people construct their ideas using a variety of ma terials and tools ranging from no tech to high tech, where components can be moulded and transformed into different ... -
Lepidochelys olivacea status and its relationship with nest management on the eastern coast in the Pacifico of Guatemala
(Universidad Nacional (Costa Rica), 2021)Marine turtles are reptiles that have lived in the Earth’s oceans and nested on the beaches starting several million years ago and also have coexisted with coastal communities since humans colonized beach areas across the ... -
Levantamiento topográfico y catastral de la zona marítimo terrestre
(Universidad Nacional (Costa Rica), 1992)El objetivo de este trabajo es aportar una metodología general que brinde una base apropiada a las instituciones encargadas de la administración de la zona marítimo terrestre que permita facilitar y regular los procesos ... -
Liberación de juveniles de pargo manchado Lutjanus guttatus (Steindachner, 1869), como estrategia para la conservación de la especie y educación ambiental marino costera
(Universidad Nacional de Colombia, 2019)La percepción ambiental como herramienta de educación y sensibilización a la conservación de los recursos marinos, fue implementada en la liberación de 102.000 juveniles de Lutjanus guttatus con la participación activa ... -
Lichen community structure and richness in three mid-elevation secondary forests in Costa Rica
(Universidad de Costa Rica (Costa Rica), 2021-06-21)Introduction: Lichen diversity, community structure, composition and species abundance have been used as indicators of the integrity and ecological continuity of tropical forest ecosystems. Objectives: To assess ... -
Life zone and habitat disturbance do not explain the coexistence in Sturnira bat species
(Springer (Alemania), 2022-06-23)One of the key questions in ecology is to understand the mechanisms that modulate the coexistence between syntopic species. Climate and habitat perturbation gradients have been proposed as moderators of species coexistence. ... -
Lineamientos generales sobre educación científica
(Universidad Michoacana de San Nicolás de Hidalgo, 2014)Ante los retos que representa la tendencia mundial a la globalización y el mundo de constantes transformaciones, donde la ciencia y la tecnología se entrelazan para ofrecer opciones de solución a problemáticas comunes, se ... -
Lineamientos para la arborización de las zonas verdes públicas de la parte baja de San Rafael de Heredia, Costa Rica, considerando especies vegetales que suministren recursos a la avifauna
(Universidad Nacional, Costa Rica, 2018)Actualmente, existe un acelerado crecimiento de los núcleos urbanos, caracterizado por la falta de lineamientos de planificación para proteger la flora y fauna. Esto ha desencadenado que muchas especies desaparezcan de las ... -
Lista agregada de peces en tres zonas de manglar del golfo de Nicoya, Costa Rica
(Universidad Nacional (Costa Rica), 1995-02-22)El conocimiento en nuestro país sobre la ictiofauna asociada a zonas de manglar es escaso, especialmente en zonas alejadas de la parte central del Golfo. La suma de características físicas y biológicas que se dan en estas ... -
Lista con las anotaciones y caracterización de la avifauna de los Sectores Carrillo, Zurquí y Barva del Parque Nacional Braulio Carrillo.
(Universidad Nacional (Costa Rica), 2000)En este estudio se confeccionaron los listados con anotaciones de la avifauna registrada en los sectores Carrillo, Zurquí y Barva, del Parque Nacional Braulio Carrillo. Con el desarrollo del mismo se obtuvo un banco de ... -
Lista Provisional de los peces de las aguas continentales de Costa Rica
(Universidad Nacional (Costa Rica), 1984-01-01)A revised and amplified list of species of Costa Rican continental water fishes is presented. Some species are included for the first time in the Costa Rican freshwater ichthyofauna and others are not described yet to the ... -
Listado de patentes comerciales del cantón San Pablo junto la priorización de actividades con generación de aguas residuales especiales
(Universidad Nacional (Costa Rica), 2021-06-21)