Browsing Investigación by Title
Now showing items 1-20 of 12375
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1,1-Diphenyl-4-(thiophen-2-yl)but-3-yn-1-ol
(2018-11)The asymmetric unit of the title homopropargyl alcohol, C20H16OS, contains two independent molecules comprising a hydroxy group, a 3-(2-thiophenyl)- propargylic moiety and two aromatic rings linked to a central carbon atom. ... -
1,3-Bis{[(2,6-dimethylphenyl)sulfanyl]methyl}benzene
(2019)The structure of the title compound, C24H26S2, an example of a pincer ligand with an SCS-chelation motif, illustrates the steric effects of the methyl groups in the thiophenyl rings at the 2- and 6-positions, forcing a ... -
1-Nitro-4-(1-propyn-1-yl)benzene
(2019)The title compound, C9H7NO2, was prepared by alkynylation of 4-iodonitrobenzene with 1,3-dilithiopropyne in the presence of 1 equivalent of CuI and catalytic amounts of Pd(PPh3)2Cl2. The complete molecule is generated ... -
12-HETE is a regulator of PGE2 production via COX-2 expression induced by a snake venom group IIA phospholipase A2 in isolated peritoneal macrophages
(2020)The snake venom myotoxin (MT)-III is a group IIA secreted phospholipase A2 (sPLA2) with pro-inflammatory activities. Previous studies have demonstrated that MT-III has the ability to stimulate macrophages to release ... -
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(Universidad de Costa Rica, 1997) -
1999
(Universidad de Costa Rica, 1999) -
20 años de Estam/Pasión 1989-2009
(SIEDIN, 2009-07-02)Catálogo de la exposición retrospectiva, realizada en el Instituto de México en San José, en julio de 2009. Es una muestra representativa de veinte años de producción artística. Reúne más de setenta obras del artista, ... -
¡200 Petabytes a 100 Megadólares!: Surá – Clúster para el almacenamiento y procesamiento de datos científicos del PRIS-LAB.
(2014-01-10)Póster presentado en la III Conferencia Internacional de Acceso Abierto, Preservación Digital y Datos científicos (Biredial-SIBD) 15-17 de octubre de 2013. El desarrollo de sistemas computacionales más poderosos en la ... -
25 Years of the Internet in Central America: an interview with Guy de Téramond
(2017-10)January 2018 marks the 25th anniversary of the first dedicated Internet connection in Central America. Little is known about the conditions that characterised the early development of the Internet in this part of the globe. ... -
50 años de la carrera de Bibliotecología en Costa Rica
(2018-03-21)El documental realiza un recorrido histórico que inicia con la creación de las primeras bibliotecas en el país, en manos de Miguel Obregón Lizano, y finaliza en el 2018, repasando lugares, momentos históricos y protagonistas ... -
¿Un 68 imaginado? Juventud, identidad y memoria en América Latina: el caso del movimiento estudiantil en Costa Rica (1968-2018)
(2019)¿Qué había pasado años antes de 1970 con el movimiento estudiantil de Costa Rica? ¿Por qué los estudiantes protestaban por una temática que nada tenía que ver con ellos? ¿Cómo se construyó y se transmitió la memoria de ... -
A 70 años de la Nakba, la paz nunca ha brillado tanto por su ausencia
(2018)El artículo pretende contextualizar el conflicto palestino-israelí en el 70 aniversario de la Nakba o catástrofe, su desarrollo y estado actual, a partir del plan de paz ideado por la Administración Trump. La Nakba o ... -
A BDDC algorithm with deluxe scaling for H(curl) in two dimensions with irregular subdomains
(2015)A bound is obtained for the condition number of a BDDC algorithm for problems posed in H(curl) in two dimensions, where the subdomains are only assumed to be uniform in the sense of Peter Jones. For the primal variable ... -
A biocomputational platform for the automated construction of large-scale mathematical models of miRNA-transcription factor networks for studies on gene dosage compensation
(2016-11-09)Cancer complexity and resistance is mediated by cell-to-cell heterogeneity, which is the consequence of the enormous instability of its genetic material. It is unknown how cancer cells are able to withstand the effects ... -
A biogeographical evaluation of high-elevation myxomycete assemblages in the northern Neotropics
(2011-08)This study represented an effort to apply some of the relatively well-known biogeographical and macroecological models to the observed structure of myxomycete assemblages, with emphasis on the northern Neotropical region. ... -
A brief account of the history of family planning in Costa Rica
(2009)Costa Rica has been a focus of demographic attention for at least two reasons: its startling rate of natural population growth, which peaked at 3.8% during 1955 and 1960 and which was considered one of the highest in the ... -
A brief survey of Higgs bundles
(2019-06)Considering a compact Riemann surface of genus greater or equal than two, a Higgs bundle is a pair composed of a holomorphic bundle over the Riemann surface, joint with an auxiliar vector field, so-called Higgs field. This ... -
A bright future for integrative venomics
(2015-10)Venomous secretions are produced by a myriad of animal species, from invertebrates to vertebrates. As a general rule, peptides and proteins represent the most abundant and functionally relevant components of these dangerous ... -
A Call for Incorporating Social Research in the Global Struggle against Snakebite
(2015-09-17)In Africa, Asia, Latin America, and parts of Oceania, envenoming after snakebite is a serious public health problem. Conservative data suggest that between 1.2 and 5.5 million people suffer snakebites every year, resulting ... -
A call-and-response system facilitates group cohesion among disc-winged bats
(2013)Acoustic signals are important in maintaining group cohesion, particularly in highly mobile species. For these signals to facilitate group cohesion, individuals must be able to recognize, and respond to, calls emitted by ...