Chemical Control Delay
Mostrando 1-12 de 15 artigos, teses e dissertações.
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1. Avaliação de técnicas calorimétricas aplicadas ao monitoramento de processos químicos. / Calorimetric technique evaluation applied for chemical processes monitoring.
The increasing demand for the production of polymers with more tight properties has placed great emphasis on the development of accurate and robust online monitoring techniques of polymerization reactions. Unfortunately, most of the main characteristics are not measurable online from analytical methodologies currently available and, therefore, in practice, t
Publicado em: 2009
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2. Reduction efficiency prediction of CENIBRA's recovery boiler by direct minimization of gibbs free energy
The reduction efficiency is an important variable during the black liquor burning process in the Kraft recovery boiler. This variable value is obtained by slow experimental routines and the delay of this measure disturbs the pulp and paper industry customary control. This paper describes an optimization approach for the reduction efficiency determination in
Brazilian Journal of Chemical Engineering. Publicado em: 2008-09
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3. Cultura de tecidos em Gerbera / Gerbera Tissue culture
Gerbera, from South Africa, belongs to Asteraceae family. They are herbaceous with flowers grouped in a head inflorescence. They are very popular and used as decorative garden plant, cut flowers and as experimental organism. São Paulo state leads the market of Brazilian ornamental flowers. Among the species produced by Brazilian companies, Gerbera is one of
Publicado em: 2008
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4. Asian soybean rust: relationship between delay of chemical control, yield, severity and healthy leaf area of soybean (Glycine max L. Merril) / Ferrugem asiática da soja: relações entre o atraso do controle químico, rendimento, severidade e área foliar sadia de soja (Glycine max L. Merril)
O controle da ferrugem asiática é altamente dependente do tratamento com fungicidas. A decisão do momento correto da aplicação é fundamental para a eficiência do tratamento, visto que atrasos na efetuação do controle podem torná-lo tão ineficaz quanto à ausência de aplicações. O dano provocado pela ferrugem asiática é decorrente da redução
Publicado em: 2008
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5. Analise histoquimica, ultra-estrutural e morfometrica do efeito de drogas anti-inflamatorias não esteroides (naproxeno e indometacina) sob a regeneração da nadadeira caudal de teleosteo, Cyprinus carpio (carpa) / Histochemical, ultra-structural and morphometric analysis of the effect of nonsteroidal anti-inflammatory drugs (naproxen and indomethacin) under the tail fin regeneration of teleostm Cyprinus carpio (carp)
The fins of teleosts, when partially amputated, they pass for a quick regenerative process called epimorphic regeneration, characterized by the formation of a mass of undifferentiated cells, by the differentiation of these cells, by the synthesis and the deposition of the extracellular matrix and morphological restoration. The regeneration of the fin is extr
Publicado em: 2008
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6. Simulador de reatores anaeróbios com base no ADM1. / Anaerobic reactors simulator based on the ADM1.
First, this work intends to show the importance of research in modeling, simulation and control of wastewater treatment processes, and to point the delay of our country (Brazil) in this subject, compared to the advance of the international initiatives. This work presents the specific problem of modeling the anaerobic digestion and proposes a new tool to simu
Publicado em: 2006
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7. ANALYSIS OF ANTIMICROBIAL POTENTIAL OF EXTRACT, FRACTIONS AND PURE COMPOUNDS OBTAINED FROM Piper solmsianum C. DC. VAR. solmsianum (PIPERACEAE). / ANÁLISE DO POTENCIAL ANTIMICROBIANO DE EXTRATO, FRAÇÕES E SUBSTÂNCIAS PURAS OBTIDAS DE Piper solmsianum C.D.C. VAR. solmsianum (PIPERACEAE)
The species Piper solmsianum belong to the family Piperaceae, which is comprised of about 700 species, and is widely distributed in the tropical and subtropical zones of world. The chemical of P. solmsianum has not been fully investigated, and there are few studies relating to its bilogical activities. This work evaluated the antimicrobial properties of the
Publicado em: 2006
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8. Evolução das propriedades físicas, reológicas e químicas durante o amadurecimento da banana Prata-Anã / Evolution of the chemical, reological and physical properties during the ripening of the banana `Prata-Anã.
The ripening kinetics of the banana Prata-Anã harvested at different development stages (18, 19 and 20 weeks) and stored under different temperatures was studied. From each randomly collected bunch, just the second and third hands were used, as being divided into bouquets with four fruits. The experiment was carried out at two stages. In the first stage, th
Publicado em: 2006
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9. Manejo de resíduos de laboratórios químicos em universidades - estudo de caso do departamento de química da UFSCar.
The universities have a basic role in a formation of a citizen, in other words, they are centers of science, technology and knowledge that affect all the society. However, the universities, through their activities of research, learning and extension, ending up by generating wastes potentially hazardous, such as the chemical laboratories. However they cannot
Publicado em: 2005
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10. Controle coerente em Ãtomos de Rb por manipulaÃÃo da fase de pulsos ultracurtos
Coherent quantum control aims to drive a quantum system towards a desired final state. Nowadays its study is widely employed to manipulate transitions in atomic systems, to break molecular bonds and to optimize the output of chemical reactions, for instance. In this thesis experimental and theoretical results of partial temporal coherent control in two diffe
Publicado em: 2005
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11. Epidemiology of soybean rust in different places on Goiás State: fungicide and time of planting effect / Epidemiologia da ferrugem asiática da soja em ambientes do Estado de Goiás: efeito de fungicida e época de semeadura
During the last crops, the soybean rust has been appeared as one of the most important problems in the national agriculture. The direct loses on the production and in the costs with fungicides have been increased the damages on this crop. Aiming to understand better the disease epidemiology, this work searched for answers by epidemic progress in two location
Publicado em: 2005
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12. Aplicação de tecnicas estatisticas multivariadas e de redes neurais na modelagem de um sistema de tratamento de efluentes industriais
One of the most difficult problem in the modeling and control of wastewater treatment processes is the construction of reliable process models. For these processes, the development of detailed models based on fundamental principIes and intense kinetic studies is very difficult, expensive and time consuming. The aerated lagoon is a common example of such an e
Publicado em: 2003