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Now showing items 19-38 of 13230
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A new species and three hybrids in the ferns from Cocos Island, Puntarenas, Costa Rica
(Universidad Nacional (Costa Rica), 2017-12)Una nueva especie y tres híbridos en helechos para la Isla del Coco, Puntarenas, Costa Rica. Una especie nueva y tres híbridos de helechos para la Isla del Coco (Costa Rica) son descritos e ilustrados ... -
A 10 años del referéndum por el TLC
(Universidad Nacional, Costa Rica, 2017-11)El 7 de octubre de 2017 se cumplieron 10 años del primer referéndum realizado en el país: el correspondiente a la decisión de aprobar o rechazar el Tratado de Libre Comercio entre Centroamérica, República Dominicana y ... -
A 3 años de la regulación de las tasas de usura en Costa Rica: logros y desafíos pendientes
(Centro Internacional de Política Económica para el Desarrollo Sostenible, 2023-08-31)Este documento examina los logros y desafíos a 3 años de la implementación de la regulación de tasas de usura en Costa Rica. Entre los logros destacan la reducción de tasas de interés, mayor transparencia, estímulo a la ... -
A 50 años de Pedro Páramo /
(Áncora. La Nación, 2012-11-09) -
A botanical extract of Souroubea sympetala and its active principle, betulinic acid, attenuate the cortisol response to a stressor in rainbow trout, Oncorhynchus mykiss
(Elsevier, 2016-09-28)The capacity of the traditional anxiolytic plant, Souroubea sympetala, and its bioactive principle, betulinic acid (BA), to lower cortisol levels in rainbow trout, Oncorhynchus mykiss, was investigated. Effects at the level ... -
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A brittle failure model for long-period seismic events recorded at Turrialba Volcano, Costa Rica
(American Geophysical Union, 2015-01-30)A temporary seismic network, consisting of 23 broadband and six short-period stations, wasinstalled in a dense network at Turrialba Volcano, Costa Rica, between 8 March and 4 May 2011. During thistime 513 long-period (LP) ... -
A bvrR/bvrS Non-Polar Brucella abortus Mutant Confirms the Role of the Two-Component System BvrR/BvrS in Virulence and Membrane Integrity
(MDPI, 2023-08-05)Brucella abortus is a bacterial pathogen causing bovine brucellosis worldwide. This facultative extracellular–intracellular pathogen can be transmitted to humans, leading to a zoonotic disease. The disease remains a public ... -
A census of mammal populations in Punta Leona Private Wildlife Refuge, Costa Rica
(Universidad Nacional, Costa Rica, 2002-09)Population sizes of six mammal species were estimated using the King method during the late dry season (March) of 1996 in the Punta Leona Private Wildlife Refuge, Costa Rica. The white-faced monkey (Cebus capucinus), coati ... -
A change laboratory professional development intervention to motivate university teachers to identify and overcome barriers to the integration of ICT
(Outlines -Critical Practice Studies, 2018-05-11)Change is one of the central aims of professional development for information and communication technologies integration in education. Studies on the use of ICT in education highlights the large investments in infrastructure ... -
A checklist of the amphibians and reptiles of Río Macho Biological Station, Provincia de Cartago, Costa Rica
(Check List vo.11 no.6 article 1784 1-10 2015, 2015-11-02)We provide a checklist of the amphibians and reptiles of Río Macho Biological Station (RMBS), Costa Rica. During a period of a year (2012–2013) we conducted visual and acoustic surveys in a natural mature forest plot (>50 ... -
A closer look into learner autonomy in the EFL classroom
(Escuela de Lenguas Modernas, Universidad de Costa Rica, 2013)Learner autonomy in the English as a Foreign Language (EFL) class-room involves conscious, reflective decisions and explicit procedures from students. When students participate actively, the process of internalizing the ... -
A Collaborative Effort Between Caribbean States for Tsunami Numerical Modeling: Case Study CaribeWave15
(Pure and Applied Geophysics vol.175 no.2 1405-1428 2017, 2017)Historical records have shown that tsunami have affected the Caribbean region in the past. However infrequent, recent studies have demonstrated that they pose a latent hazard for countries within this basin. The Hazard ... -
A combined experimental and theoretical study of gas sorption on nanoporous silver triazolato metal-organic frameworks
(2014-01-01)A new silver-triazolate metal-organic framework (MOF), {Ag 3[Ag5(μ3-3,5-tBu 2tz)6](BF4)2}n (2), has been prepared and structurally characterized. The CO2 sorption properties of this new MOF and previously reported isostructural ... -
A combined first-principles computational/experimental study on LiNi 0.66Co 0.17Mn 0.17O 2 as a potential layered cathode material
(Elsevier, 2012-08-01)First-principles calculations are used to analyze the phase stability, formation energy, and Li intercalation potential for a series of layered cathode materials. The calculations show LiNi 0.66Co 0.17Mn 0.17O 2 as a ... -
A Combined Metagenomics and Metatranscriptomics Approach to Unravel Costa Rican Cocoa Box Fermentation Processes Reveals Yet Unreported Microbial Species and Functionalities
(Frontiers Media, 2021-02-16)Cocoa fermentation is the first step in the post-harvest processing chain of cocoa and is important for the removal of the cocoa pulp surrounding the beans and the development of flavor and color precursors. In the present ... -
A comparative approach to the teaching of english literature
(I Congreso Internacional de Lingüística Aplicada CONLA UNA, 2013)Esta ponencia aspira a plantear un nuevo alcance metodológico a la enseñanza de la literatura en colegios y universidades de Costa Rica donde el inglés se enseña como lengua extranjera. Motivado por la necesidad de acercar ... -
A comparison of different indirect techniques to evaluate volcanic intact rock strength
(Springer, 2009)The efficiency of different methods that are used to evaluate volcanic intact rock strength is compared that includes Schmidt hammers, point load tests and uniaxial compression tests. The Schmidt hammer records the rebound ... -
A comparison of fruit removal in Ficus colubrinae between birds and Ectophylla alba (Chiroptera: Phyllostomidae) in a Costa Rican rain forest
(Taylor and Francis Ltd., 2021-02-02)Ectophylla alba almost exclusively feeds on the fruits of Ficus colubrinae therefore significantly contributing to dispersal of its seeds. The objective of this research was to quantify the fruit removal of F. colubrinae ... -
A computable general equilibrium analysis of Brexit: Barriers to trade and immigration restrictions
(Blackwell Publishing Ltd, 2020-09-11)This paper estimates the economic effects of different types of restrictions on trade and immigration in the United Kingdom after Brexit. Regarding trade restrictions, we focus on UK–EU increases in tariffs and non-tariff ...
