Water Purification Plants
Mostrando 1-12 de 19 artigos, teses e dissertações.
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1. Solid-Liquid Extraction with Low Temperature Purification Coupled with Gas Chromatography and Mass Spectrometry for Determination of Polychlorinated Biphenyls in Sewage Sludge
Sewage sludge is the residue produced by the wastewater treatment plants, which can be used as soil conditioner in agriculture. However, the current legislation recommends monitoring chemical contaminants such as polychlorinated biphenyls (PCBs). In this study, solid-liquid extraction with low temperature purification (SLE-LTP) was optimized and validated fo
J. Braz. Chem. Soc.. Publicado em: 2017-01
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2. The physiological and biochemical mechanism of nitrate-nitrogen removal by water hyacinth from agriculture eutrophic wastewater
ABSTRACT Large amount of agriculturl wastewater containing high level nitrate-nitrogen (NO3 --N) is produced from modern intensive agricultural production management due to the excessive use of chemical fertilizers and livestock scale farming. The hydroponic experiment of water hyacinth was conducted for analyzing the content of NO3 --N, soluble sugar conten
Braz. arch. biol. technol.. Publicado em: 20/10/2016
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3. Research on Phosphorus Removal in Artificial Wetlands by Plants and Their Photosynthesis
ABSTRACT Urban rainfall runoff pollution has become a major reason for water eutrophication problem in the process of urbanization in China, while phosphorus is a significant restrictive factor that influences primary productivity of freshwater system. It's rather significant to conduct phosphorus control in waste water with engineering measures. This resear
Braz. arch. biol. technol.. Publicado em: 20/10/2016
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4. A simple procedure for the purification of active fractions in aqueous extracts of plants with allelopathic properties
Most studies conducted to test the allelopathic activity of plant parts have made use of water as solvent. However, the presence of polar, water-soluble substances, such as proteins and carbohydrates, tends to hamper the purification of active compounds. In this study, we present a simple purification procedure that separates the active fraction of the extra
Acta Bot. Bras.. Publicado em: 2013-03
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5. Alelopatia e bioprospecção em Rapanea ferruginea e Rapanea umbellata
Allelopathy is a process that involves primary or secondary metabolites produced by plants and microorganisms, which influences the growth and development of agricultural and biological systems. The intensity of plant allelopathic effects may depend on the hábitat, age and the biotic and abiotic conditions during the seasons in which they were collected. Wh
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/07/2011
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6. PurificaÃÃo parcial de compostos biologicamente ativos a partir de Pycnoporus sanguineus para o controle de ferrugem asiÃtica em soja / Partial purification of biologicaly active compounds from Pycnoporus sanguineus for the control of soybean asian rust
Induced resistance involves the activation of latent defense mechanisms in plants in response to the treatment with biotic or abiotic agents. The use of crude extracts aimed at inducing resistance mechanisms is an interesting alternative to chemical control, however, in this extracts can occurs besides de presence of inducers, the presence of suppressors. Th
Publicado em: 2009
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7. Pharmacognostic study, investigation of antimicrobial activities, leishmanicidal and toxicity of Rhamnidium elaeocarpum Reissek - Rhamnaceae (little coffee) / Estudo Farmacognóstico, Investigação das Atividades Antimicrobiana, Leishmanicida e Toxicidade Aguda de Rhamnidium elaeocarpum Reissek RHAMNACEAE (Cafezinho)
In the last years the treatment with medicines made from medicinal plants has increased. A concern about the useful of these natural products is the quality control pharmacobotanical, phytochemical and purity tests, which make up the technical specifications of a particular plant species. Moreover, pharmacological and toxicological studies must be conducted
Publicado em: 2009
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8. Estudo comparativo entre faseolamina comercial e farinha de feijÃo como perspectiva ao tratamento da obesidade e do diabetes mellitus tipo 2. / Comparative study between commercial phaseolamine and bean flour as a perspective to the treatment of obesity and type 2 diabetes mellitus.
Use of plants of medicinal purposes represents a wide field of research. New therapeutic proposals need studies to evaluate the appropriate use as to posology, indication, limitations and risks of utilization. The search for new phytotherapeutic ones as an alternative to the traditional medicinal treatment of obesity and of the type 2 diabetes mellitus has b
Publicado em: 2008
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9. Estudos de formação e remoção de subprodutos de desinfecção (SPDS) em aguas contendo acidos humicols quando sumetidas a dioxido de cloro / Studies of formation and remotion of disinfection by products (DBP), generated by the oxidation of solutions containing humic substances throught the use of chlorine dioxide
The objective of the present research was to analyze the formation of disinfection by products (DPB), generated by the oxidation of solutions containing humic substances with the addition of bromide ions through the use of chlorine dioxide, isolated or associated with free chlorine in different concentrations and reaction times. The technique of gaseous chro
Publicado em: 2007
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10. Análise da expressão de enterolobina em sementes e calos vegetais de Enterolobium contortisiliquum
Cytolytic toxins are produced by a variety of living organisms, particularly bacteria, certain insects, poisonous reptiles and stinging marine invertebrates. Many of these toxins appear to function simply by forming pores in cell membranes, disrupting the permeability barrier and leading eventually to cell death. However, few examples have been studied in pl
Publicado em: 2007
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11. Caracterização química de resíduos da produção de biodiesel compostados com adição mineral / Chemical characterization of residues from biodiesel production composted with mineral addiction
The production of biodiesel has in agriculture its base of sustentation. The culture of sugar cane and oleaginous species as castor oil plant after processing to obtain alcohol and vegetal oil, respectively, generates organic residues. These residues when used in agriculture in the compost form make possible the reduction of production costs and increase of
Publicado em: 2006
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12. Cholesterol-dependent hemolytic activity of Passiflora quadrangularis leaves
Plants used in traditional medicine are rich sources of hemolysins and cytolysins, which are potential bactericidal and anticancer drugs. The present study demonstrates for the first time the presence of a hemolysin in the leaves of Passiflora quadrangularis L. This hemolysin is heat stable, resistant to trypsin treatment, has the capacity to froth, and acts
Brazilian Journal of Medical and Biological Research. Publicado em: 2005-07