Browsing by Title
Now showing items 12767-12786 of 13244
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Ubicación de sitios turísticos y recreación del Cantón de Poás
(Escuela de Ciencias Geográficas, 2007)Ubicación de sitios turísticos y de recreación del cantón de Poás, parte de la propuesta de Plan Regulador. -
Ubicación espacial y localización desde la perspectiva sociocultural: validación de una propuesta formativa para la enculturación docente a partir de Etnomatemáticas
(2017)Este artículo describe los resultados de un taller que involucra los conceptos matemáticos congelados (según la concepción de Gerdes) en la forma de dar una dirección y las indicaciones para llegar a un lugar. Este taller ... -
Ultraestructura de la glándula androgénica, espermatogénesisy oogénesis de camarones marinos (Decapoda: Penaeidae)
(Universidad de Costa Rica (Costa Rica), 1994-08-01)Se describe la glándula androgénica de Penaeus vannamei y P. Stylirostris (camarones thelycum abiertos). La glándula es una hebra celular que aparece asociada a los conductos deferentes desde la región proximal de la ampolla ... -
Ultrasonographic screening of embryo development in cattle (Bos indicus) between days 20 and 40 of pregnancy
(Elsevier, 2005-03-09)Through a transrectal ultrasonography (Aloka SSD 500 microplus equipment, linear transducer of 7.5 MHz) a total of 267 observations were performed in a group of 50 females mainly Bos indicus, raised under humid tropical ... -
Ultrasonography as Aid for Early Pregnancy Diagnosis in Zebu Cattle in a Natural Mating Programme
(Taylor and Francis Group, 2006)To utilise ultrasonography in Zebu cattle to test early pregnancy, multiparous Bos indicus COWS (n=74) were allocated with 2 mature Brahman bulls, which were replaced with new ones every four weeks. COWS were bled for ... -
Ultrastructural demonstration of the model of Litopenaeus vannamei (Crustacea, Penaeidae) male sexual maturation and spermatozoal capacitation
(Invertebrate Reproduction and Development Vol.61 No.1, 2016-10-13)The present study demonstrates ultrastructurally the model of Litopenaeus vannamei male sexual maturation and spermatozoal capacitation. The results show that phase 1 of the model occurred in the seminiferous tubules and ... -
La UNA y la formación profesional en el país
(Universidad Nacional, Costa Rica, 2019-02)Explica que debido al papel que ha dado la crisis financiera a Costa Rica en los últimos años, las universidades públicas se han convertido en un instrumento relevante para el rol del progreso y visión inclusiva de la ... -
UNA: Extensión y andamiaje en Coopesilencio R.L
(Universidad Nacional, Costa Rica, 2023)Este ensayo expone como la Universidad Nacional se ha vinculado con comunidades mediante procesos de extensión y andamiaje impulsados desde las pedagogías del Sur, se toma como referencia el caso particular de la comunidad ... -
Uncovering the Kink Celebrating my Black Identity: Perceptions on Afro-Costa Ricans Natural Hair
(Journal of Arts & Humanities, 2016)It is no secret the racism within the Costa Rican society especially against people of African descent. While this racism is manifested in mostly overt ways it is nonetheless present, and continues to affect people of ... -
Understanding and coping with foreign language anxiety
(Universidad Nacional, Costa Rica, 2022)Foreign Language Anxiety or FLA has become one of the most constant and persistent issues to be faced in the English classroom; thus, FLA is currently a complex obstacle for students to achieve a meaningful learning ... -
Understanding and forecasting phreatic eruptions driven by magmatic degassing
(Springer Nature, 2018-05-18)This paper examines phreatic eruptions which are driven by inputs of magma and magmatic gas. We synthesize data from several significant phreatic systems, including two in Costa Rica (Turrialba and Poás) which are currently ... -
Understanding Ehrlichia canis infections in dogs of Costa Rica: hematological findings and indicative clinical signs
(Universidad Nacional, Costa Rica, 2016-11-30)Background: A cross-sectional study combining different serological and molecular techniques for the detection of Ehrlichia canis in dogs was carried out to determine hemopathological findings and suggestive clinical ... -
Understanding failures through the lifetime of a top-level supercomputer
(Academic Press Inc., 2021-04-20)High performance computing systems are required to solve grand challenges in many scientific disciplines. These systems assemble many components to be powerful enough for solving extremely complex problems. An inherent ... -
Understanding how access shapes the transformation of ecosystem services to human well-being with an example from Costa Rica
(Elsevier, 2017-10-26)Increasingly, ecosystem services have been applied to guide poverty alleviation and sustainable develop-ment in resource-dependent communities. Yet, questions of access, which are paramount in determiningbenefits from the ... -
Understanding social justice leadership: An international exploration of the perspectives of two school leaders in Costa Rica and England
(Management in Education, 2014-06-30)This article is an examination of two social justice leaders, one in Costa Rica and one in England. It is part of the International Study of Leadership Development Network, a multi-nation study of social justice and ... -
Understanding soft error sensitivity of deep learning models and frameworks through checkpoint alteration
(Institute of Electrical and Electronics Engineers (IEEE), 2021-10-13)The convergence of artificial intelligence, highperformance computing (HPC), and data science brings unique opportunities for marked advance discoveries and that leverage synergies across scientific domains. Recently, deep ... -
Understanding Space Weather: Solar Cycles and Magnetic Rossby Waves
(Universidad Nacional de Costa Rica, 2019-07-31)El objetivo de esta investigación es explorar si existe una relación entre las ondas magnéticas de Rossby rápidas o lentas y ciertas observaciones de la actividad solar de largo y muy largo plazo (meses, ... -
Understanding the methodology and techniques to teach english for specific purposes in public technical high schools
(Universidad Nacional, Costa Rica, 2021)This paper describes that English for Specific Purposes (ESP) is a new tendency suggested by the Ministry of Public Education of Costa Rica for the curricular transformation in all the specialties that the system offers ... -
Understory bat roosts, availability and occupation patterns in a Neotropical rainforest of Costa Rica
(Revista de Biología Tropical, 2016-07-03)The strong link between bats and their roosts is widely recognized as being particularly significant. Despite this, roosting ecology of bats is poorly understood and much of the basic information is still unknown. In this ... -
Underwater diseases... A silent threat: fungal infections in octocorals
(WDA Latin America, 2017-07)Research on wildlife diseases is a challenge that goes from determining a significant sample size to choosing the sampling site and then confronting the particularities of field work and the studied species. The challenge ...
