Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Homar S. Barcena"'
Autor:
Homar S. Barcena, Katarzyna Maziarz
Publikováno v:
Journal of Chemical Education. 94:1538-1542
In an effort to repurpose expired guaifenesin tablets, experiments devised for practical instruction are reported for the preparation and isolation of the guaifenesin acetonide using a microscale kit. The laboratory experiment successfully utilizes a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cab1506ef508725b4c5182ab4e393090
https://doi.org/10.1021/acs.jchemed.6b00671
https://doi.org/10.1021/acs.jchemed.6b00671
Publikováno v:
Journal of Chemical Education. 94:1314-1318
The synthesis of epoxidized soybean oil (ESO) provides students a vantage point on the application of green chemistry principles in a series of experiments. Qualitative tests review the reactions of alkenes, whereas spectroscopic analyses provide ins
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::436c846ea0fbd49753efe59b8248f33d
https://doi.org/10.1021/acs.jchemed.6b00672
https://doi.org/10.1021/acs.jchemed.6b00672
Autor:
Peishan Chen, Homar S. Barcena
Publikováno v:
Journal of Chemical Education. 93:202-205
Students are introduced to spectrophotometry in comparing the antioxidant activity of pure eugenol and oil of cloves from a commercial source using a modified ferric reducing antioxidant power (FRAP) assay. The extraction of the essential oil from dr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a6d4bb19f499e255234efe7e6adf2fb5
https://doi.org/10.1021/ed5008469
https://doi.org/10.1021/ed5008469
Autor:
Jodie T. Fahey, Lynn E. Maelia, J. Fahey, L. Maelia, Barbora Morra, Andrew P. Dicks, V. Fishback, B. Reid, A. Schildkret, Loyd D. Bastin, Kaitlyn Gerhart, E. M. Gross, S. H. Williams, E. Williams, D. A. Dobberpuhl, J. Fujita, J. T. Fahey, A. E. Dineen, J. M. Henain, Renuka Manchanayakage, Grant W. Fahnhorst, Zachary J. Swingen, Deborah K. Schneiderman, Christa S. Blaquiere, Michael T. Wentzel, Jane E. Wissinger, Homar S. Barcena
Autor:
Homar S. Barcena
Publikováno v:
ACS Symposium Series ISBN: 9780841231771
ACS Symposium Series
ACS Symposium Series
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8664f19676b7f2e3adb91475bd29b72c
https://doi.org/10.1021/bk-2016-1233.ch009
https://doi.org/10.1021/bk-2016-1233.ch009
Publikováno v:
SpringerPlus
Anthocyanidins were synthesized to study the effect of methoxy substitution on the B ring to their antioxidant property. Comparative FRAP studies show 2′- and 4′-methoxy substituents have higher antioxidant activities, which may be attributed to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::34a58a5c8c47cbcc152c8d7953699dc2
https://doi.org/10.1186/s40064-015-1250-x
https://doi.org/10.1186/s40064-015-1250-x
Publikováno v:
Inorganic chemistry. 44(21)
Previously, we reported the synthesis and preliminary characterization of Cu(I/II) complexes of N,N-bis(2-quinilylmethyl)-(l)-methionine (Zahn, S.; Canary, J. W. Science 2000, 288, 1404-7). The chemically oxidized and reduced forms of the complexes g
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e3729bae54946854feec3c2fd8dfa778
https://pubmed.ncbi.nlm.nih.gov/16212392
https://pubmed.ncbi.nlm.nih.gov/16212392
Publikováno v:
Organic letters. 5(5)
One-electron reduction inverts the helicity of copper complexes formed from derivatives of S-methylcysteine and methioninol. The change in conformation of the organic ligand is followed in the exciton-coupled circular dichroism (ECCD) spectra of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5d68c9f06585c886235dcbe743ae2f12
https://pubmed.ncbi.nlm.nih.gov/12605496
https://pubmed.ncbi.nlm.nih.gov/12605496