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The role of chloramine species in NDMA formation
(2018-09)
N-nitrosodimethylamine (NDMA), a probable human carcinogen disinfection by-product, has been
detected in chloraminated drinking water systems. Understanding its formation over time is important
to control NDMA levels in ...
Bioavailability of Xenobiotics in the Soil Environment
(2010)
When synthetic, xenobiotic compounds such as agrochemicals and industrial chemicals are utilized, they eventually reach the soil environment where they are subject to degradation, leaching, volatilization, sorption, and ...
Reactive Intermediates in the Photolysis of Furan, Thiophene and Pyrrole: The Dewar and the Ring Contraction forms
(1985-07-14)
Five-member aromatic heterocycles have been known to undergo scrambling of the ring atoms upon photolysis. These reactions are characterized by their selectivity and several mechanisms have been proposed involving the ...
Dye‐sensitized Devices: Photovoltaic and Photoelectrolytic Applications
(2018-11)
Dye‐sensitized approach along with stability and surface robustness in titanium dioxide (TiO2) against photocorrosion and degradation has been widely studied and applied in several important applications. This chapter ...
Influence of rice field agrochemicals on the ecological status of a tropical stream
(2016-01-15)
Many tropical countries contain a high density of protected ecosystems, and these may often be bordered by intensive agricultural systems. We investigated the chemical and ecological status of a stream connecting an area ...
Estudio de la seguridad química en bodegas de reactivos de laboratorios de investigación de la Universidad de Costa Rica: elaboración de una herramienta tecnológica para la identificación y manejo del riesgo químico
(2021)
En este trabajo, se ha utilizado una matriz para determinar el riesgo químico, en la que se han unido la identificación y caracterización del peligro usando la determinación
toxicológica de las sustancias de la OECD, ...
Pheromone chirality of african palm weevil, Rhynchophorus phoenicis (F.) and palmetto weevil, Rhynthophorus crueniatus (F.) (Coleoptera: Curculionidae)
(1994-09)
There are four stereoisomers of both 3-methyl-octan-4-ol, the aggregation pheromone of the African palm weevil,Rhynchophorus phoenicis (F.) and 5-methyl-octan-4-ol, the aggregation pheromone of the palmetto weevil,Rhynchophorus ...
Estudio de metabolitos característicos y polifenoles de las especies Capsicum annuum y Piper nigrum, cultivadas en Costa Rica
(2022)
El presente trabajo permitió el análisis de chile picante (Capsicum annuum) y de pimienta negra (Piper nigrum) cultivadas en Costa Rica, a través de diferentes rutas enfocadas en dos tipos de metabolitos secundarios, la ...
Design of an optimized biomixture for the degradation of carbofuran based on pesticide removal and toxicity reduction of the matrix
(2015-12)
Pesticide biopurification systems contain a biologically active matrix (biomixture) responsible for the accelerated elimination of pesticides in wastewaters derived from pest control in crop fields. Biomixtures have been ...
Focos de Innovación 2024-2025
(2024-02-21)
Es evidente que las transformaciones ambientales, sociales y económicas, que son necesarias para el desarrollo a nivel global, dependen de las soluciones novedosas que la ciencia, la tecnología y la innovación puedan ...