Biología
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Typification of Costa Rican Orchidaceae described by Rudolf Schlechter. Species variorum collectorum
(2022-04)The typification of 53 orchid species described by Rudolf Schlechter based on specimens gathered in Costa Rica by Paul (Pablo) Biolley, Juan José Cooper Sandoval, Auguste R. Endrés, Carl Hoffmann, Emel Jiménez Segura, Otón ... -
Evaluación del hábitat, comportamiento y riesgo de las tropas de monos congo (Alouatta palliata) en búsqueda de la sostenibilidad con fines turísticos, en Playa Hermosa, Guanacaste
(2022-04-06)El hábitat de una especie debe mantenerse en condiciones esenciales para su sobrevivencia. Estas condiciones corresponden a elementos como los son la cobertura forestal, alimento, agua, condiciones climáticas, pendientes ... -
Pocillopora spp. growth analysis on restoration structures in an Eastern Tropical Pacific upwelling area
(2022)Coral reefs in Culebra Bay (North Pacific of Costa Rica) are threatened by multiple anthropogenic disturbances including global warming, overfishing, eutrophication, and invasive species outbreaks. It is possible to assist ... -
Genetic structure in two avian species with different tolerance to urbanization: Case of white-eared ground-sparrow and house wren across an urban gradient
(2022)El flujo génico en aves puede verse afectado por la urbanización dependiendo de la historia natural y adaptabilidad de la especie al cambio de hábitat. Se pueden esperar resultados contrastantes cuando se comparan ... -
Electric-field control of single-molecule tautomerization
(2020)The electric field is an important parameter to vary in a single-molecule experiment, because it can directly affect the charge distribution around the molecule. Yet, performing such an experiment with a well-defined ... -
Spectroelectrochemical Experiment for Studying Water Oxidation with a Nickel Oxide Catalyst
(2020)Electrochemical and spectroelectrochemical techniques are very important for characterizing energy materials. In the search for new sources of renewable energy, water splitting for hydrogen production and CO2 reduction is ... -
High Performance Graphene–Oxide–Metal Diode through Bias‐Induced Barrier Height Modulation
(2016)Graphene–oxide–metal diodes are presented whose performance is preserved even for thin oxide layers, as required for high frequency applications. The diodes, which rely upon bias-induced modulation of graphene's work ... -
Hot carrier extraction from multilayer graphene
(2016)Hot carriers in semiconductor or metal nanostructures are relevant, for instance, to enhance the activity of oxide-supported metal catalysts or to achieve efficient photodetection using ultrathin semiconductor layers. ... -
Thin-layer black phosphorus/GaAs heterojunction pn diodes
(2015)Owing to its high carrier mobility and thickness-tunable direct band gap, black phosphorus emerges as a promising component of optoelectronic devices. Here, we evaluate the device characteristics of p-n heterojunction ... -
Chemical modification of graphene via hyperthermal molecular reaction
(2014)Chemical functionalization of graphene is achieved by hyperthermal reaction with azopyridine molecular ions. The one-step, room temperature process takes place in high vacuum (10–7 mbar) using an electrospray ion beam ... -
Electroactive copper (II) bimetallic self-assembled multilayers on Si (100)
(2012)Silicon (100) surfaces were modified by reacting 4-aminopyridine and Si–Cl bond. These surfaces were further used for tethering copper bimetallic complexes and growing monolayers and multilayers by changing the axial ... -
Self-assembly of a catechol-based macrocycle at the liquid–solid interface: experiments and molecular dynamics simulations
(2012)This combined experimental (STM, XPS) and molecular dynamics simulation study highlights the complex and subtle interplay of solvent effects and surface interactions on the 2-D self-assembly pattern of a Schiff-base ... -
Requirements for beneficial electrochemical restructuring: A model study on a cobalt oxide in selected electrolytes
(2021)The requirements for beneficial materials restructuring into a higher performance oxygen evolution reaction (OER) electrocatalyst are still a largely open question. Here erythrite (Co3(AsO4)2·8H2O) is used as a Co-based ... -
Perspectivas y aplicaciones reales del grafeno después de 16 años de su descubrimiento
(2021)A 16 años del gran descubrimiento del grafeno los focos de atención vuelven a estar en este material con el reporte de su comportamiento superconductor dependiendo del apilado de sus capas. Sin embargo, su nombre durante ... -
Oxidative dissolution of synthetic vivianites as a method for the crystallization of molecular structural motifs
(2021)Isolation of structural motifs from minerals can be used to improve the understanding of fundamental processes such as catalytic mechanisms and spectroscopic vibrations. In this study, we designed an oxidative dissolution ... -
Anti‐corrosive additives for alkaline electrolyte in Al‐air batteries: NH4VO3 and polyoxometalates
(2021)Aluminum-air batteries are a promising alternative for portable energy storage. However, one of the significant issues in this technology is the corrosion of aluminum in alkaline electrolytes. In this study, we explored ... -
Aromatic and aliphatic thiol self-assembled monolayers on Au: Anchoring and delivering copper species
(2011)The immobilization of dinuclear copper(II) acetate complexes (Cu2(CH3COO)4·2H2O) on self-assembled monolayers (SAMs) of different aliphatic and aromatic thiols with oxygen and nitrogen donors at the end group is investigated ... -
Maxillaria, an unfinished monograph.
(2012)The genus Maxillaria is a large and tediously diverse genus of orchids from throughout the Neotropics, ranging from the U.S.A. (Florida) to Bolivia and the West Indies. Estimates put the number of species in the genus ... -
A new Maxillaria (Orchidaceae) from Panama and Colombia, and a Brazilian species found in Ecuador.
(2007)A new species from western Panama, Maxillaria curvicolumna M.A. Blanco & Neubig is described and illustrated. It is distinguished by its rhizomatous habit; small, ovoid pseudobulbs subtended by a pair of narrow leaves with ... -
First record of Coronida glasselli (Stomatopoda: Coronididae) for Costa Rica (Isla del Coco National Park, Eastern Tropical Pacific)
(2016)Abstract: Stomatopods are a small group of marine and estuarine crustaceans that inhabit several marine eco-systems including deep, shallow waters, and intertidal zones. Six species from five families have been reported ...
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