Browsing by Title
Now showing items 13048-13067 of 13789
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The opening of vents like decompression valves of the hydrothermal system at Turrialba volcano, Costa Rica
(International Association of Volcanology and Chemistry of the Earth's Interior, 2013-07-24) -
The opossum and other didelphids in the cultures of Costa Rican society and indigenous peoples: an approach to ecology and conservation
(Cold Spring Harbor Laboratory (Estados Unidos), 2024)The opossum Didelphis marsupialis, commonly referred to as the zorro pelón in Costa Rica, is a marsupial that holds significant representation in both Costa Rican and indigenous cultures, such as the Talamanca natives. ... -
The persistent embrace of onychophorans: What determines copulation duration in velvet worms?
(Universidad de Costa Rica (Costa Rica), 2019)In the only onychophorans mating that has been photographed, instead of fleeing, the couple remained together despite being manipulated. Why? The duration of copulation in onychophoran sis possibly controlled by the female, ... -
The pertinence of addressing the affective filter in EFL Costa Rican classrooms and strategies to lower it
(Universidad Nacional, Costa Rica, 2022)This paper explains the relevance that the affective filter has on students’ learning processes and the different approaches that can be implemented to reduce its negative effects. At this time, several studies have confirmed ... -
The polynucleotide kinase 3′-phosphatase gene (PNKP) is involved in Charcot-Marie-Tooth disease (CMT2B2) previously related to MED25
(Springer, 2018-07-24)Charcot-Marie-Tooth disease (CMT) represents a heterogeneous group of hereditary peripheral neuropathies. We previously reported a CMT locus on chromosome 19q13.3 segregating with the disease in a large Costa Rican family ... -
The potential use of Rattus norvegicus (Mammalia, Muridae) in experimental infections with metacercariae of Paragonimus mexicanus (Digenea, Troglotematidae)
(Universidad Nacional, Costa Rica, 2017-01-15)Seven Wistar rats (Rattus norvegicus) were experimentally infected with Paragonimus mexicanus metacercariae, obtained from organs and tissues of freshwater crabs (Brachyura: Pseudothelphusidae) collected from the Caribbean ... -
The principles of cooperative learning in an oral communication course in English: A descriptive analysis
(Universidad Nacional, 2014)This article reports on the findings of a research conducted to describe the occurrence and effect of the principles of Cooperative Learning in an oral communication course in English for sophomores during one semester at ... -
The promotion of online student-centered classes to achieve Communicative Language Teaching with the help offered by technological tools
(Universidad Nacional, Costa Rica, 2021)Nowadays, teaching virtually has become a challenge due to the COVID 19 emergency. However, with the help of technological tools, English as aforeign language (EFL) classes can be directed towards a student-centered ... -
The proteolytic digestive activity and growth during ontogeny of Parachromis dovii larvae (Pisces: Cichlidae) using two feeding protocols
(2014)Se evaluó la actividad proteolítica digestiva y el crecimiento de larvas de Parachromis dovii durante la ontogenia en un sistema de recirculación utilizando dos estrategias de alimentación durante un período de 28 días. ... -
The Providence and Port of Limón: Metaphors for Afro-Costa Rican Black Identity
(Universidad Nacional, Costa Rica, 2015)Durante mis años como estudiante de la disciplina de Historia, me preocupaba que tanto en la historiografía costarricense como en la caribeña no hubiera suficientes estudios sobre los inmigrantes afrocaribeños del siglo ... -
The regionalization of a university project of educational robotics to help Costa Rican youth to avoid drug consumption
(Institute of Electrical and Electronics Engineers Inc., 2019)The following article presents the experience of the regionalization of the Training of Trainers in Robotics project in Schools in vulnerable areas of Costa Rica to the different regions outside the Greater Metropolitan ... -
The regulon of Brucella abortus two- component system BvrR/BvrS reveals the coordination of metabolic pathways required for intracellular life
(PLOS ONE, 2022-09-21)Brucella abortus is a facultative intracellular pathogen causing a severe zoonotic disease worldwide. The two-component regulatory system (TCS) BvrR/BvrS of B. abortus is con- served in members of the Alphaproteobacteria ... -
The relationship between humidity, light and the activity pattern of a velvet worm, Epiperipatus sp. (Onychophora: Peripatidae), from Bahía Drake, South Pacific of Costa Rica
(Instituto Internacional de Ecología (Brasil), 2018-10-31)Even though the Onychophora represent a whole phylum, observations of their activity pattern in nature are almost non-existent. Here we report on the relationship between humidity and light and activity pattern of a new ... -
The relationship between information and communication technology and productivity in Costa Rican companies
(IEEE Explore, 2012-10-01)This paper presents the results of a research aimed at studying the effect of information and communications technology (ICT) on productivity, using the data of the Costa Rican innovation survey 2008. The results obtained ... -
The relationship between perch type and aggressive behavior in the lizard Norops polylepis (Squamata: Dactyloidae)
(Universidad de Sao Paulo, 2015)The intensity of aggression against intruders by owners of a territory has been related to the type of resources available to an individual within its territory. The influence of perch-site characteristics on aggressive ... -
The rip current hazard in Costa Rica
(2015-01-31)Deaths from rip currents are a major hazard on global beaches, but few data are available at a national scale to support the development of appropriate intervention programs. Analysis of data from the Judicial Investigation ... -
The rock coast of South and Central America
(Geological Society Memoirs 2014, 2014-07)The great variety of climatic conditions, tidal ranges and wave regimes of South and Central America act on a complex geology and tectonic framework. Many of the rock and cliffed coasts of South America are strongly ... -
The Role of Facebook in Foreign Language Learning
(Universidad Nacional, Costa Rica, 2014)Recently, the way languages are learned has been greatly influenced by technology. Both learners and professors are exposed to the Internet daily, so they can take advantage of it to teach and learn a foreign language. For ... -
The role of fragmentation and landscape changes in the ecological release of common nest predators in the neotropics
(PeerJ, 2014-07)Loss of large mammalian carnivores may allow smaller mesopredators to become abundant and threaten other community members. There is considerable debate about mesopredator release and the role that other potential factors ... -
The role of neutrophils in Brucellosis
(American Society for Microbiology, 2020-10-14)Brucellosis is a bacterial disease of domestic animals and humans. The pathogenic ability of Brucella organisms relies on their stealthy strategy and their capacity to replicate within host cells and to induce long-lasting ...
