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A new methodology for the synthesis of δ-substituted α,β-unsaturated δ-lactones
(2020)
A new protocol for the synthesis of δ-substituted-α,β-unsaturated δ-lactones was developed. Selective reaction of 1,3-dilithiopropyne with ketones, followed by addition of ethyl chloroformate formed ethyl 5-[(ethoxycarbo ...
Validation of a methodology by LC-MS/MS for the determination of triazine, triazole and organophosphate pesticide residues in biopurification systems
(2020)
Biopurification systems are useful in the management of pesticide residues and provide an option to dispose wastewaters of agricultural origin derived from pesticide application practices. The analysis of pesticide residues ...
Costa Rica, land of endless orchids
(2013-07)
With almost 1,600 reported species (Karremans et al. 2012), Costa Rica has one of the richest orchid floras in tropical America, currently surpassed in total species number only by Brazil, Colombia, Ecuador and Peru (Govaerts ...
Publicaciones y otros escritos de investigadores y colaboradores del Jardín Botánico Lankester, 1950-2000
(2001-05)
Se presenta un catálogo de publicaciones y otros escritos de investigadores y estudiantes que en algún momento, entre 1973 y 2000, estuvieron ligados al Jardín Botánico Lankester de la Universidad de Costa Rica.
Importancia del microbioma en la salud humana y aplicaciones medicas
(2023)
Recent research has linked gut microbiota to human health in multiple ways. The evolution of lifestyles
has determined a change in the composition of intestinal bacteria, as well as the implications that they
exert on ...
Illustrations and Studies in Neotropical Orchids. 2. A note on Pleurothallis luctuosa (Orchidaceae: Pleurothallidinae), with a new species
(2010)
The identity of Pleurothallis luctuosa, its taxonomic history and geographic distribution are discussed, and the species is described and illustrated. A new species from Costa Rica, P. neglecta, is described and illustrated. ...
Biodegradation of Pharmaceuticals by Fungi and Metabolites Identification
(2012-01-01)
Pharmaceutical compounds comprise a widely employed group of
therapeutic agents now considered as emerging micropollutants. This chapter
summarizes the state of the art in the degradation of pharmaceuticals by fungi ...
Capillitial extrusion from fruits of Maxillaria nardoides (Orchidaceae: Maxillariinae)
(2006-09)
The fruits of Maxillaria nardoides are fusiform, 1–1.2 × 0.3 cm. Upon dehiscence, six valves separate completely at the apex, and a long cylindric mass (up to 6.5 cm long × 3 mm in diameter) of white hygroscopic trichomes ...
Chloroplast genomes as a tool to resolve red algal phylogenies: a case study in the Nemaliales
(2016)
Obtaining strongly supported phylogenies that permit confident taxonomic and evolutionary interpretations has been a challenge in algal biology. High-throughput sequencing has improved the capacity to generate data and ...
Algoritmos de aprendizaje automático en la identificación de miARNS potencialmente asociados a discapacidades intelectuales no sindrómicas
(2022-05-20)
Las Discapacidades intelectuales (IDs) son un grupo de trastornos del neuro-desarrollo
con una alta heterogeneidad fenotípica y genotípica. La asociación de elementos
genéticos, como genes, micro-ARNs o ARNs largos no ...