Results 11 to 20 of about 25,360 (148)

Synthesis, characterization of a new carbonylated zirconium metallocene using a dichloro-zirconocene derived from partially alkylated s-indacene [PDF]

open access: yes, 2009
Indexación: ScieloThis work describes the synthesis and characterization of new organometallic species, an unprecedented mononuclear zirconium complex bearing a tetraalkylated s-indacene ligand, and secondly, its respective dicarbonyl complex obtained by
Adams, C.   +7 more
core   +1 more source

ELECTROCHEMICAL CHARACTERIZATION OF NEW 1,5-BENZODIAZEPINE DERIVATIVES [PDF]

open access: yes, 2014
Indexación: Web of Science; Scielo.Cyclic voltammetry was used to study the electrochemical behavior of new 1,5-benzodiazepine derivatives on a glassy carbon electrode. Well-defined oxidation peaks were observed in DMSO.
CATALÁN-CARO, SEBASTIÁN   +2 more
core   +1 more source

Phenolics, depsides and triterpenes from the chilean lichen pseudocyphellaria nudata (zahlbr.) D.J. Galloway [PDF]

open access: yes, 2008
Indexación: ScieloThe lichen Pseudocyphellaria nudata is a species endemic to southern South América. From the lichen tallus, methyl orsellinate, 2-methoxy-3,6-dimethyl-4-hydroxybenzaldehyde, methyl-evernate, tenuiorin, hopan-6ß,22-diol and hopan-6α,76 ...
Cuellar, M.   +4 more
core   +1 more source

Facile synthesis of isoxazoles and pyrazoles from ß-diketohydrazones [PDF]

open access: yes, 2009
Indexación: ScieloNew 3,5-dimethyl-4-[(E)-4-(R1-phenyl)diazenyl]isoxazoles and 3,5-dimethyl-1-(R2-phenyl)-4-[(E)-(R1-phenyl)diazenyl]-1H-pyrazoles may be obtained by reaction of 3-[2-(R1-phenyl)hydrazono)]pentane-2,4-dione with H2NOH-HCl and R2-4-C6H4 ...
Bustos, Carlos   +4 more
core   +1 more source

La Revista de Investigación de Física rumbo a la Indexación

open access: yesRevista de Investigación de Física, 2021
Una revista científica arbitrada e indexada es aquella que se encuentra en un catálogo de indexación y que cumple con ciertos estándares de calidad para su publicación, como el formato uniforme de los artículos, la definición de las políticas editoriales,
César Jiménez
doaj  

EVALUATION OF THE ANTIOXIDANT ACTIVITY OF THE FLAVONOIDS ISOLATED FROM HELIOTROPIUM SINUATUM RESIN USING ORACFL, DPPH AND ESR METHODOLOGIES [PDF]

open access: yes, 2016
Indexación: Web of Science; Scielo.The antioxidant capacity has been determined for a number of flavonoid compounds from Heliotropium sinuatum, a plant that grows in arid areas in the north of Chile.
Barriga-Gonzalez, G   +4 more
core   +1 more source

Biotransformation of ent-beyerenes with mucor plumbeus [PDF]

open access: yes, 2013
Indexación: Web of Science; Scielo.ABSTRACT The microbiological transformation of ent-beyer-15-en-18-ol 1 and ent-beyer-15-en-19-ol 2, using Mucorplumbeus, resulted in hydroxylated products.
Chamy, María Cristina   +3 more
core   +1 more source

Applications of the Conceptual Density Functional Theory Indices to Organic Chemistry Reactivity [PDF]

open access: yes, 2016
Indexación: Web of ScienceTheoretical reactivity indices based on the conceptual Density Functional Theory (DFT) have become a powerful tool for the semiquantitative study of organic reactivity.
Domingo, Luis R.   +2 more
core   +2 more sources

HYDROGEN-BONDED SUPRAMOLECULAR ARRAY IN THE CRYSTAL STRUCTURE OF ETHYL 7-HYDROXY-2-OXO-2H-CHROMENE-3-CARBOXYLATE MONOHYDRATE [PDF]

open access: yes, 2010
Indexación: Web of Science; ScieloThe crystal structure of ethyl 7-hydroxy-2-oxo-2H-chromene-3-carboxylate monohydrate (1), C12H10O5.H2O, was established by X-ray crystallographic analysis.
CASSELS, BRUCE K.   +2 more
core   +2 more sources

Declaración de San Francisco de Evaluación de la Investigación DORA. Poniendo ciencia en la evaluación de la investigación

open access: yesCuadernos de Información y Comunicación, 2020
Este texto es la célebre Declaración sobre la Evaluación de la Investigación firmada en San Francisco, desarrollada por un grupo de editores de revistas académicas durante la Reunión anual de la American Society for Cell Biology(ASCB) en San Francisco ...
Eva Aladro Vico
doaj   +1 more source

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