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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 ...
A New Method for the Preparation of 1,5-Diynes. Synthesis of (4E,6Z,10Z)-4,6,10-Hexadecatrien-1-ol, the Pheromone Component of the Cocoa Pod Borer Moth Conopomorpha cramerella
(2004)
A new method for the synthesis of 1,5-diynes, from the reaction of 1,3-dilithiopropyne and propargyl chlorides, was developed. This new methodology was used to prepare (4E,6Z,10Z)-4,6,10-hexadecatrien-1-ol, one of the ...
Rapid Determination of the ‘Legal Highs’ 4-MMC and 4-MEC by Spectroelectrochemistry: Simultaneous Cyclic Voltammetry and In Situ Surface-Enhanced Raman Spectroscopy
(2021-12-31)
The synthetic cathinones mephedrone (4-MMC) and 4-methylethcathinone (4-MEC) are
two designer drugs that represent the rise and fall effect of this drug category within the stimulants
market and are still available in ...
Direct functionalization of Mn12-(methacrylate) clusters on Si(100): surface characterization and electrochemical properties
(2016-09)
The reaction of H–terminated Si(100) with methacrylate–substituted manganese carboxylate clusters [Mn12O12{CH2C(CH3)COO}16(H2O)4], [Mn12–(methacrylate)] via hydrosilylation afforded Mn12–(methacrylate)−Si(100). The chemically ...
Phosphate recovery from wastewater with magnetic particles and enrichment of the reclaimed solution as a source for struvite precipitation
(2016-05-30)
In this study phosphate was recovered from different wastewaters (WW) by using magnetic particles modified with layered double hydroxides (LDH). Afterwards, the enriched reclaimed solution was used for the precipitation ...
Aceptación de un jugo de mora endulzado con estevia en contraste con otros edulcorantes
Acceptance of a blackberry juice sweetened with stevia vs other sweeteners
(2017)
El objetivo de la presente investigación fue desarrollar un jugo de mora (Rubus adenotrichus), endulzado con esteviolglucósidos (glucósidos obtenidos a partir de las hojas de Stevia rebaudina Bertoni) como una bebida ...
Polyphenolic HRMS Characterization, Contents and Antioxidant Activity of Curcuma longa rhizomes from Costa Rica
(2022-03)
Curcuma longa constitutes an important source of secondary metabolites that have been associated with multiple health benefits. For instance, curcumin, demethoxycurcumin and bisdemethoxy-curcumin, have been found to perform ...
Síntesis de la feromona sexual de la polilla de la papa, Scrobipalpopsis Solanivora
(1988)
Se sintetizó el acetato (E) -3- dodecenilo, atrayente sexual de la polilla de la papa (Scrobipalpopsis solanivora), utilizando dos procedimientos: una ruta acetilénica y mediante la condensación de Knoevenagel.
Fate of buturon-14C in soil during seven seasons of exposure under outdoor conditions
(1984-03)
Buturon (ring 14C) was applied to wheat and soil in two successive years (3 kg/ha each year) at outdoor conditions. Residual radioactive substances in the upper soil layer (0-10-cm depth) were measured 1.5, 2.5, 3.5, 6.0, ...
Synthesis and Crystal Structure of a Copper(II) Benzoate Complex Bearing a Bis-2,2′-Tetrahydrofuryl Peroxide Moiety
(2018-12)
Complex [Cu2(ben)4·2THF−(η1–O2)]∞ (2) (ben=C6H5CO2− benzoate; THF=tetrahydrofuran) was isolated when a solution of Cu2(ben)4·2THF (1) in THF upon natural sunlight irradiation yields crystals suitable for single-crystal ...