Super/subcritical fluid chromatography with packed columns: state of the art and applications
摘要:
Separations using supercritical fluid chromatography (SFC) with packed columns have been re-discover...
doi:
10.5935/0100-4042.20140158
作 者:
Silva, Carla Graziel...
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Química Nova
Influence of sediment humic substances on the bioavailability of metals in the aquatic system
摘要:
In rivers, sediments act as sinks for retaining contaminants. This study evaluated the influence of ...
doi:
10.5935/0100-4042.20140164
作 者:
Universidade Federal...
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Química Nova
Sedimentation of nutrients and particulate matter in a reservoir supporting aquaculture activities in the semi-arid region of Rio Grande do Norte
摘要:
Nutrient levels in water reservoirs have been increasing over the years worldwide and fish farming i...
doi:
10.5935/0100-4042.20140203
作 者:
Universidade Federal...
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Química Nova
Chemical constituents and antioxidant activity of leaves and branches of Eugenia copacabanensis Kiaersk (Myrtaceae)
摘要:
Phytochemical investigation of Eugenia copacabanensis allowed for the isolation and identification o...
doi:
10.5935/0100-4042.20140079
作 者:
Carvalho Junior, Alm...
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Química Nova
Inquiry dynamics in the study of perturbations to a state of chemical equilibrium
摘要:
Educational institutions are not being effective, because they do not give individuals what they nee...
doi:
10.5935/0100-4042.20140215
作 者:
Morais, Carla;Paiva,...
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Química Nova
Terpenoids and coumarins from Jatropha ribifolia (Pohl) Baill
摘要:
Eight compounds, including terpenoids (jatrophone, hydroxyjatrophone, 6-hydroxycyperene, cabraleadio...
doi:
10.5935/0100-4042.20140172
作 者:
Andrade, José Robert...
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Química Nova
Isolation of verbascoside and validation of method to standardize the crude extract of the aerial parts of Buddleja stachyoides Cham. & Schltdl. (Scrophulariaceae)
摘要:
Phenylpropanoid glycoside verbascoside was isolated and identified from the ethyl acetate fraction o...
doi:
10.5935/0100-4042.20140057
作 者:
Moreira, Thais F.;Un...
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Química Nova
Determination of infinite dilution activity coefficient in ethanol-water-salt systems using spme-gc-fid
摘要:
A new method using the headspace solid phase microextraction (HS-SPME) technique was used to evaluat...
doi:
10.5935/0100-4042.20140178
作 者:
Universidade Federal...
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Química Nova
Bent´s rule contextualizes hydrogen bond strength in trimolecular clusters
摘要:
This article presents a theoretical study of the molecular properties of trimolecular clusters of Cn...
doi:
10.5935/0100-4042.20140107
作 者:
Universidade Federal...
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Química Nova
Glycerol as green solvent for efficient obtention of beta -hydroxyesters
摘要:
In this work, we report a new method for obtaining racemic 尾-hydroxyesters by reduction of 尾-ketoest...
doi:
10.5935/0100-4042.20140088
作 者:
Aquino Neto, Francis...
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期刊标题:
Química Nova