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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 ...
Separation of crude plant extracts with high speed CCC for primary screening in drug discovery
(2001)
High speed countercurrent chromatography (HSCCC) was used
in a pre-fractionation pilot study to improve the quality of crude
plant samples for primary screening in drug discovery efforts. The
methanol ...
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 ...
Paraquat Behavior in Costa Rican Soils and Residues in Coffee
(1990)
The paraquat deactivation capacities of soils, from 20 coffee plantations, generally ranged from 100 to 500 mg of paraquat/kg of soil. Even when paraquat had been applied up to twice per year (1.2 kg ha-1 year) for 20 ...
Ethyl 5-[(ethoxycarbonyl)oxy]-5,5-diphenylpent-2- ynoate
(2019-11-12)
The title compound, C 22 H22 O 5, crystallizes with two molecules in the
asymmetric unit, one of which shows disorder of its ethyl acetate group over
two sets of sites in a 0.880 (2):0.120 (2) ratio. The C C distances ...
The Combined Use of Alphavirus Replicons and Pseudoinfectious Particles for the Discovery of Antivirals Derived from Natural Products
(2015)
Alphaviruses are a prominent class of reemergent pathogens due to their globally expanding ranges, potential for lethality, and possible use as bioweapons. The absence of effective treatments for alphaviruses highlights ...