Separation and characterization of asphaltenic subfractions
摘要:
The structure of the various asphaltenic subfractions found in crude oil was evaluated. For this pur...
doi:
10.1590/S0100-40422012001000019
作 者:
Ferreira, Silas R.;U...
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Química Nova
Partition of proteases from Lentinus citrinus DPUA 1535 by the Peg/Phosphate Aqueous Two-Phase System
摘要:
A full two-level factorial design was employed to study the influence of PEG molar mass (MMPEG), PEG...
doi:
10.1590/S0100-40422012001000004
作 者:
Universidade Federal...
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Química Nova
Sesquiterpenes from the seeds of Guarea guidonia (Meliaceae)
摘要:
Two new sesquiterpenes 6伪-ethoxyeudesm-4(15)-en-1尾-ol (1) and (7R*)-5-epi-opposit-4(15)-ene-1尾,7-dio...
doi:
10.1590/S0100-40422012000200017
作 者:
Garcez, Walmir Silva...
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Química Nova
Preparation of association compound between rhodium(II) citrate and β-cyclodextrin
摘要:
Inclusion compound of rhodium(II) citrate with 尾-cyclodextrin in a 1:1 molar ratio was prepared usin...
doi:
10.1590/S0100-40422012000400020
作 者:
Burgos, Ana E.;Okio,...
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Química Nova
Correlation between precursors and volatiles in Brazilian arabica coffee processed by dry, semi-dry and wet methods and discrimination by principal component analysis
摘要:
The influence of pre-processing of arabica coffee beans on the composition of volatile precursors in...
doi:
10.1590/S0100-40422012001000026
作 者:
Arruda, Neusa P.;Rez...
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Química Nova
Evaluation of procedure for spectrophotometric quantification of total flavonoids in leaves of Bauhinia forficata Link
摘要:
Interest in analytical methods for quality control of herbal drugs has grown sharply due to the scar...
doi:
10.1590/S0100-40422012000300014
作 者:
Peixoto, Monize Sant...
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Química Nova
Isolation and evaluation of cytotoxic potential of phenolic derivatives from Schinus terebinthifolius Raddi (Anacardiaceae)
摘要:
The EtOH extract from leaves of S. terebinthifolius was subjected to partition between EtOH:H2O and ...
doi:
10.1590/S0100-40422012001100029
作 者:
Universidade Federal...
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Química Nova
An antimicrobial alkaloid and other metabolites produced by Penicillium sp. An endophytic fungus isolated from Mauritia flexuosa L. f.
摘要:
The alkaloid glandicoline B (1) and six other compounds: ergosterol (2), brassicasterol (3), ergoste...
doi:
10.1590/S0100-40422012000400022
作 者:
Universidade Federal...
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Química Nova
Poly(ethylene-co-methyl acrylate)/poly(caprolactone) triol blends for drug delivery systems: characterization and drug release
摘要:
Poly(ethylene-co-methyl acrylate) (EMA) and poly (caprolactone) triol (PCL-T) blends, a biodegradabl...
doi:
10.1590/S0100-40422012000200012
作 者:
Soldi, Valdir;Univer...
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Química Nova
Quantum state tuning: numerical study of the quantum harmonic oscillator
摘要:
The quantum harmonic oscillator is described by the Hermite equation.1 The asymptotic solution is pr...
doi:
10.1590/S0100-40422012000800033
作 者:
Abreu, Leandro de;Ló...
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Química Nova