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Parámetros físico-químicos en aguas costeras de la Isla del Coco, Costa Rica (2001-2007)
Physico-chemical parameters in coastal waters around Isla del Coco, Costa Rica (2001-2007)
(2008-11-17)
Four cruises to Isla del Coco (Cocos Island), Costa Rica, were carried out in order to gather oceanographic data
related to surface temperature, salinity, dissolved oxygen concentration, Secchi disk depth, nutrient ...
Phytochemical study of endemic Costa Rican Annonaceae species Annona pittieri and Cymbopetalum costaricense
(2021)
Phytochemical profile of the Central American rainforest endemic Annonaceae species, Annona pittieri and Cymbonopetallum costaricense, were studied in search
of novel bioactive compounds. The acetogenin squamocin (1) ...
Neutral organic redox pairs based on sterically hindered hydroquinone/benzoquinone derivatives for dye-sensitized solar cells
(2018-06)
Substituted derivatives of hydroquinone/benzoquinone were studied as organic redox mediators in the electrolyte for dye-sensitized solar cells (DSSCs). Thus, di-tert-butylhydroquinone (DTHQ), thymohydroquinone (ThymHQ) and ...
Soil Fungal Community Composition Correlates with Site-Specific Abiotic Factors, Tree Community Structure, and Forest Age in Regenerating Tropical Rainforests
(2021)
Successional dynamics of plants and animals during tropical forest regeneration have been thoroughly studied, while fungal compositional dynamics during tropical forest succession remain unknown, despite the crucial roles ...
Anti-platelet activity and chemical characterization by UPLC-DAD-ESI-QTOF-MS of the main polyphenols in extracts from Psidium leaves and fruits
(2021)
In Costa Rica, two species of Psidium fruits, P. guajava and P. friedrichsthalianum, are widely consumed as food and used in folk medicine. Although studies have revealed the health effects of these fruits, there has been ...
Aspectos prácticos de la validación e incertidumbre en mediciones químicas
(Buenos Aires, Argentina, 2009)
En este libro se abordan dos temas relacionados con uno de
los más importantes aspectos en lo relativo a la calidad de la
información generada por un laboratorio de análisis químico: la
validación de los métodos utilizados, ...
Three new species of Gliocephalotrichum causing fruit rot on different hosts from Brazil
(2020-09-18)
The genus Gliocephalotrichum (Nectriaceae), originally described as a soil-borne fungus, has been associated with postharvest diseases, especially of tropical fruits. Taxonomic studies using both morphological and molecular ...
Identification of polyphenols from antiviral Chamaecrista nictitans extract using high-resolution LC–ESI–MS/MS
(2014)
Chamaecrista nictitans (L) extract possesses antiviral properties; it acts against the herpes simplex virus, and this may be attributed to its constituent phenolics. Here, high-resolution LC–ESI–MS/MS is used to identify ...
From Ideality to Simplicity: A Robust and Affordable Hydrogen Reference Electrode
(2020-02-01)
In electrochemistry, the concept of a reference electrode is fundamental. Introductory courses might mention the standard hydrogen electrode (SHE), its working principle, and its theoretical design; however, chances are ...
Estudio de la biocompatibilidad de hidroxiapatita y su posible aplicación como vehículo para sustancias bioactivas
(2014-12)
Las nanopartículas sintéticas se utilizan en aplicaciones médicas para el diagnóstico, la
prevención y el tratamiento de las enfermedades. Algunos de los usos más destacados de estos
biomateriales, a través de la ...