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Periodic table of the elements in the perspective of artificial neural networks
- 摘要：
- Although several chemical elements were not known by end of the 18th century, Mendeleyev came up wit...
- doi：
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10.1590/S0100-40422008000500040
- 作 者：
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Anhanguera Educacion...
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Química Nova
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Extraction techniques and clean-up procedures for the determination of pahs in sediments of the Ceará coast
- 摘要：
- Extraction and clean-up are essential points in polycyclic aromatic hydrocarbon (PAHs) analysis in a...
- doi：
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10.1590/S0100-40422008000600019
- 作 者：
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Correia, Leandro M.;...
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Química Nova
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Dectection of contaminants in a bioindicator species (Corbicula fluminea) - Ribeira de Iguape River, Sao Paulo State
- 摘要：
- The study assessed heavy metal concentrations in the tissue samples of Corbiculafluminea, by ICP-OES...
- doi：
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10.1590/S0100-40422008000700018
- 作 者：
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Universidade de São ...
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- 期刊标题：
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Química Nova
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Chemical indicators of the quality of organic matter of soil from the Rio das Mortes watershed under different coffee plant managements
- 摘要：
- This work evaluated the chemical quality of organic matter (OM) of a Brazilian Oxisol cultivated wit...
- doi：
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10.1590/S0100-40422008000700026
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Instituto Nacional d...
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Química Nova
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Dissolution enthalpy of sodium sulfacetamide in water: comparison between solution isoperibolic calorimetry and the van't Hoff method
- 摘要：
- The dissolution enthalpy (螖H0soln) of sodium sulfacetamide in water was determined by means of isope...
- doi：
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10.1590/S0100-40422008000600033
- 作 者：
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Vargas, Edgar F.;Uni...
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Química Nova
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Chemical constituents of Licania tomentosa Benth. (Chrysobalanaceae)
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- This paper describes the chemical constituents isolated from leaves and fruits of Licania tomentosa ...
- doi：
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10.1590/S0100-40422008000100014
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Universidade Federal...
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- 期刊标题：
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Química Nova
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Basic principles and applications of iontophoresis for cutaneous penetration of drugs
- 摘要：
- Physicochemical constraints severely limit the number of molecules that can be considered as candida...
- doi：
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10.1590/S0100-40422008000600040
- 作 者：
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Gelfuso, Guilherme M...
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- 期刊标题：
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Química Nova
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5-deoxyflavonoids and lignan isolated from the wood of Schizolobium parahyba (Vell.) S.F. Blake (guapuruvu)
- 摘要：
- Four flavonoids, 3,7,4'-trihydroxyflavanone (garbanzol), 7,4'-dihydroxyflavone, 7,4'-dihydroxy-3'-me...
- doi：
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10.1590/S0100-40422008000600014
- 作 者：
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Carvalho, Acácio Ger...
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- 期刊标题：
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Química Nova
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Characterization of soybean phosphatidylcholine purity by ¹H and 31P NMR
- 摘要：
- A strategy is proposed to evaluate the purity of phosphatidylcholine from soybean lecithin, obtained...
- doi：
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10.1590/S0100-40422008000700043
- 作 者：
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Pohlmann, Adriana Ra...
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- 期刊标题：
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Química Nova
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Liquid-liquid extraction of uranium(VI) from colofanite of itataia (Santa Quitéria, Ceará) by organic extractants in the presence of phosphoric acid
- 摘要：
- This work describes the liquid-liquid extraction of uranium after digestion of colofanite (a fluoroa...
- doi：
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10.1590/S0100-40422008000800042
- 作 者：
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Cunha, José Waldemar...
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- 期刊编号：
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- 期刊标题：
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Química Nova
