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Composition, Chemical Fingerprinting and Antimicrobial Assessment of Costa Rican Cultivated Guavas (Psidium friedrichsthalianum (O. Berg) Nied. and Psidium guajava L.) Essential Oils from Leaves and Fruits
(2016-07-28)
The essential oil of two related tree species, P. friedrichsthalianum and P. guajava, where obtained. A total of six different oil samples were recovered including leaves in dry/rainy season and fruits of both plant species. ...
Orbitals in general chemistry, Part III: Consequences for Teaching
(2021)
In Part III of this series, we undertake a critique of the nature of application of orbitals to describe or to explain the structure and the
binding within molecules and materials. Teaching orbitals in introductory chemistry ...
Purpureocillium roseum sp. nov. A new ocular pathogen for humans and mice resistant to antifungals
(2020)
Background
Infectious keratitis is the main cause of preventable blindness worldwide, with about 1.5–2.0 million new cases occurring per year. This inflammatory response may be due to infections caused by bacteria, fungi, ...
Ecotoxicological analysis during the removal of carbofuran in fungal bioaugmented matrices
(2016-02)
Biomixtures are used for the removal of pesticides from agricultural wastewater. As biomixtures employ high content of lignocellulosic substrates, their bioaugmentation with ligninolytic fungi represents a novel approach ...
Essential oil from leaves of Myrcianthes fragrans (Myrtaceae) from Costa Rica. A new chemotype?
Aceite esencial de las hojas de Myrcianthes fragrans (Myrtaceae) de Costa Rica. ¿Un nuevo quimiotipo?
(2017)
Myrcianthes is a Myrtaceous genus of flowering plants of about 30 to 40 species, distributed in the American continent. The aim of this work was to study the chemical composition of the foliar essential oil from M. fragrans ...
El Uso de Plaguicidas en América Latina: Tendencias e implicaciones ambientales (Memoria Encargada)
Pesticide Use in Latin America: Trends and Environmental Implications
(1988)
The current demand for pesticides in Latin America exceeds US $ 2000 million in value. Up to 1990, consumption is expected to rise by 7 to 12%. The use of pesticides has been fully accepted in Lati America as a readily ...
Derivados del colesterol en el alga roja Laurencia papillosa (Forssk.) Grev.
(1991)
La gran mayoría de las algas de la división Rhodophyta contienen colesterol como el contribuye esteroidal C27 mayoritario a pesar de que en algunas especies el desmosterol es el que se encuentra en cantidades apreciables, ...
Reconfiguration of metabolic fluxes in Pseudomonas putida as a response to sub-lethal oxidative stress
(2021-01-11)
As a frequent inhabitant of sites polluted with toxic chemicals, the soil bacterium and plant-root colonizer Pseudomonas
putida can tolerate high levels of endogenous and exogenous oxidative stress. Yet, the ultimate ...
Crystal structures and biological activity of 1,1,4-triphenyl-substituted 1,3-enyne compounds
(2019)
1,3-Enyne structural motifs are versatile building blocks in organic synthesis and
occur widely in various natural products with many of them being highly active
as cytotoxic macrolides and antitumour antibiotics. This ...
Granular Activated Carbon Treatment May Result in Higher Predicted Genotoxicity in the Presence of Bromide
(2016-07-28)
Certain unregulated disinfection byproducts (DBPs) are more of a health concern than regulated DBPs. Brominated species are typically more cytotoxic and genotoxic than their chlorinated analogs. The impact of granular ...