C
Cesar A. Sierra
Researcher at National University of Colombia
Publications - 70
Citations - 684
Cesar A. Sierra is an academic researcher from National University of Colombia. The author has contributed to research in topics: Heck reaction & Chemistry. The author has an hindex of 12, co-authored 64 publications receiving 540 citations. Previous affiliations of Cesar A. Sierra include University of Massachusetts Amherst.
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Journal ArticleDOI
Antibacterial activity against Escherichia coli of Cu-BTC (MOF-199) metal-organic framework immobilized onto cellulosic fibers
Haendel S. Rodríguez,Juan P. Hinestroza,Cristian Ochoa-Puentes,Cesar A. Sierra,Carlos Y. Soto +4 more
TL;DR: A strong antimicrobial activity against Escherichia coli of Cu-BTC metal-organic frameworks immobilized over cellulosic fibers is reported in this paper, where the in situ synthesis of MOF-199 or HKUST-1 is carried out by exposing carboxymethylated substrates to Cu(OAC)2, 1,3,5-benzenetricarboxylic acid and trie- thylamine solutions following a very specific order.
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Physicochemical characterisation of gulupa (Passiflora edulis Sims. fo edulis) fruit from Colombia during the ripening
Aleyda Jiménez,Cesar A. Sierra,Francisco J. Rodríguez-Pulido,M.L. González-Miret,Francisco J. Heredia,Coralia Osorio +5 more
TL;DR: In this article, the physicochemical properties of Gulupa (Passiflora edulis Sims) in three maturity stages were investigated. And the results showed an increase in the amount of volatile during fruit ripening, with aliphatic esters as major constituents.
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ABCG2/BCRP: Specific and Nonspecific Modulators.
Diana Peña-Solórzano,Simone Alexandra Stark,Burkhard König,Cesar A. Sierra,Cristian Ochoa-Puentes +4 more
TL;DR: The aim of the present review is to describe and highlight specific and nonspecific modulators of ABCG2 reported to date based on the selectivity of the compounds, as many of them are effective against one or more ABC transport proteins.
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A panchromatic modification of the light absorption spectra of metal-organic frameworks
Eugenio H. Otal,Manuela Leticia Kim,Mauricio E. Calvo,L. Karvonen,I. O. Fábregas,Cesar A. Sierra,Juan P. Hinestroza +6 more
TL;DR: The optical absorption of UiO-66-NH2 MOF was red-shifted using a diazo-coupling reaction and the degradation performance was found to correlate with the red shift of the absorption edge, suggesting potential applications of these materials in photocatalysis and in dye sensitized solar cells.
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The generalized tanh-coth method to special types of the fifth-order KdV equation
Cesar A. Sierra,Alvaro H. Salas +1 more
TL;DR: A generalization of the well-known tanh–coth method is used to obtain new periodic and soliton solutions for several forms of the fifth-order KdV equation (fKdV).