Extraction of aquatic organic matter by temperature decreasing: an alternative methodology to keep the original sample characteristics

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摘要:
In this work was developed an alternative methodology to separation of aquatic organic matter (AOM) ...
doi:
10.1590/S0100-40422003000200012
作 者:
Almeida, Rosana N. H...
作者机构:
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期刊标题:
Química Nova

Regional geochemical reference for the interpretation of the chemical elements concentrations in the sediment samples from Lago Paranoá watershed-DF

期刊论文
摘要:
doi:
10.1590/S0100-40422003000600006
作 者:
Boaventura, Geraldo ...
作者机构:
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期刊标题:
Química Nova

2,5-hexanodione determination in urine samples subjected to acid hydrolysis: relevance of the chromatographic column and the pH

期刊论文
摘要:
Acidic hydrolysis of samples is frequent in urinary 2,5-hexanodione determination. This hydrolysis s...
doi:
10.1590/S0100-40422003000400021
作 者:
Universidade Federal...
作者机构:
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期刊标题:
Química Nova

Eletrochemical synthesis of iron(VI) ferrate

期刊论文
摘要:
The optimization of ferrate(VI) ion generation has been studied due to its favorable characteristics...
doi:
10.1590/S0100-40422003000300021
作 者:
Luca, Sérgio João de...
作者机构:
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期刊标题:
Química Nova

Evaluation of graduate programs in chemistry in Brazil: 2002 version

期刊论文
摘要:
The graduate programs in Chemistry were evaluated and classified from the data collected for the per...
doi:
10.1590/S0100-40422003000400029
作 者:
Universidade Federal...
作者机构:
期刊编号:
期刊标题:
Química Nova

Analytical formulae for the energy of electron subshells in atoms and their optimization

期刊论文
摘要:
Generalized analytical orthonormal quasi-hydrogenic radial wave functions with free parameters (radi...
doi:
10.3176/proc.2016.4.04
作 者:
Arved Sapar
作者机构:
期刊编号:
期刊标题:
Proceedings of the Estonian Academy of Sciences

Design for sustainability approach in product development – a case study using innovative nail polishes developed by a small enterprise

期刊论文
摘要:
This article presents a study on Design for Sustainability (D4S) that we conducted in a small compan...
doi:
10.3176/proc.2016.3.11
作 者:
Zane Grigale-Soroči...
作者机构:
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期刊标题:
Proceedings of the Estonian Academy of Sciences

On approximation by Blackman- and Rogosinski-type operators in Banach space

期刊论文
摘要:
In this paper we introduce the Blackman- and Rogosinski-type approximation processes in an abstract ...
doi:
10.3176/proc.2016.3.01
作 者:
Andi Kivinukk;Anna S...
作者机构:
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期刊标题:
Proceedings of the Estonian Academy of Sciences

On endomorphisms of groups of order 36

期刊论文
摘要:
There exist exactly 14 non-isomorphic groups of order 36. In this paper we will prove that three of ...
doi:
10.3176/proc.2016.3.06
作 者:
Peeter Puusemp;Alar ...
作者机构:
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期刊标题:
Proceedings of the Estonian Academy of Sciences

On the influence of wave reflection on shoaling and breaking solitary Waves

期刊论文
摘要:
A coupled BBM system of equations is studied in the situation of water waves propagating over a decr...
doi:
10.3176/proc.2016.4.06
作 者:
Amutha Senthilkumar
作者机构:
期刊编号:
期刊标题:
Proceedings of the Estonian Academy of Sciences
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