A Gestão ambiental no distrito industrial I de Maracanaú - Região metropolitana de Fortaleza-CE

Pós-graduação em Geografia - IGCE

Estratégia de identificação paramétrica aplicada à modelagem fenomenológica de um sistema do tipo correia transportadora industrial para fins de detecção de faltas

Os sistemas do tipo correia transportadora, são sistemas essenciais para grandes empresas, embora este equipamento apresente um elevado grau de criticidade, de modo que uma parada não planejada do mesmo, pode gerar perdas imensas ou até mesmo a parada de todo o processo produtivo. Tendo em vista a criticidade do equipamento, torna-se necessário realizar a monitoração adequada do mesmo e detectar com maior antecedência possível a ocorrência de alguma falta ocorrida no sistema. Objetivando reduzir as paradas não planejadas, investiga-se nesta dissertação a modelagem de um sistema do tipo correia transportadora com a finalidade de uso no monitoramento e diagnóstico de faltas neste tipo de sistema. Primeiramente é discutido um modelo fenomenológico do processo, o qual é baseado na aplicação das leis da mecânica e considerando-se os diversos tipos de força de oposição ao movimento de uma correia transportadora. Os principais parâmetros do transportador foram estimados utilizando-se técnicas de identificação baseadas em Mínimos Quadrados Não Recursivos. Em seguida, foi desenvolvido e implementado um algoritmo de detecção de faltas utilizando a teoria de análise intervalar, de modo que possibilite detectar condições inadequadas de funcionamento. Com o intuito de avaliar o desempenho do algoritmo proposto foi projetado e construído um protótipo que emula as condições operacionais típicas de um sistema real do tipo correia transportadora. Os resultados obtidos experimentalmente, confirmam o bom desempenho da metodologia proposta.

Desenvolvimento de algoritmo para modelagem e simulação de sistemas por grafos de ligação

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Materiais nanocompósitos de sistemas epóxi

Descrito como o presente Privilégio de Invenção, refere-se a um processo sobre novos materiais nanocompósitos de polímeros híbridos, preparados com sucesso baseados em um novo procedimento para cura de resinas epóxi comerciais ou não comerciais (tais como resinas epóxi híbridas orgânica-inorgânica, e outras que contenham grupos epóxi), sendo que, para tanto, é usado um silsesquioxano, substituído com éster, sendo genericamente definido como éster-silsesquioxano e etilenodiamina, como agentes de cura, sendo que o processo para cura destes materiais possa ser realizado a frio e que a cura se encerre em um tempo menor ou igual a duas horas.

Síntese de um novo derivado de aminoácido paramagnético (epm-5) para uso em marcação de diferentes macromoléculas e sistemas de interesse químico-biológico

A presente invenção se refere à síntese química e à aplicação como composto orgânico paramagnético do tipo marcador de spin, do produto denominado ácido 2,2,5,5-tetramentilpirrolidina-1-oxi-3-[n-(fluorenilmetiloxicarbonil)-amino-4-carboxílico, abrevias peptídicas ou de determinados sistemas. Possibilita-se, ainda, a ligação do composto apenas pelo seu radical poac, com a remoção do protetor fmoc, em meio básico orgânico, e, da mesma forma, quando se deseje prolongar a seqüência peptídica até o ponto desejado. Por conter um anel do tipo pirrolidina, a sua introdução no meio de uma cadeia peptídica irá provocar conformações diferenciadas das de <244>-aminoácidos comuns, sendo portanto um composto valioso para se estudar a relação estrutura-atividade biológica de diversos peptídeos de importância. Pelo mesmo processo de síntese viabiliza-se o uso de fmoc-poac na marcação do peptídeo angiotensina ii (poac^ 7^ -aii).

Uso na modulação dos sistemas colinérgico e/ou serotonérgico e/ou gabaérgico de vertebrados, de um extrato bruto vegetal padronizado, composição farmacêutica para o tratamento de disturbios associados a disfunções do sistema colinérgico e/ou serotonérgico e/ou gabaérgico, e processo de produção de medicamento para a modulação dos sistemas colinérgico e/ou serotonérgico e/ou gabaérgico de vertebrados

The present invention provides the use of molecules for cholinergic serotonergic and/or gabaergic system models, revealing pharmaceutical compositions comprising 11-OH-erythravine, erythravine, erythrartine, pharmaceutically acceptable isotherals, salts, byproducts and/or solvates thereof, optionally containing other Erythrine byproducts, for the treatment of anxiety disorders; processes for obtaining said pharmaceutical compositions...

O design industrial e as engenharias: uma possibilidade de integração por intermédio da engenharia reversa

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Sistemas CAD/CAM: avaliação da precisão de aquisição de dados

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Uso de sistemas construídos de áreas alagadas (Constructed Wetland System - CWS) tipo ascendente/descendente, para tratamento de efluentes avícolas

Human development and population growth during the twentieth century increased the water demand, tripling its consumption between 1950 and 1990. As the water streams were polluted; and as water is the source of minerals and also regulates vital functions, it becomes the vehicle of transmission and consequently spreads many diseases. Probably, the industries are the major responsible for this pollution when they dump untreated effluents to water streams, saturating the already insufficient net of sanitation facilities polluting water and soil. An effective treatment has been established with low cost in Europe and the United States, through constructed systems on wetlands Constructed Wetland Systems - CWSs, gradually used in other countries in the last three decades. Lately, we observe a continuous growth in Brazilian poultry business, and poultry industry showed greatest dynamism in the country, following the global market. Pondering this information and the efficiency of such treatment, this work aimed to study prototypes, in a laboratory scale, simulating ascending and descending types of CWSs, vegetated with aquatic macrophytes Eichhornia crassipes and the uses of aggregates and soil, to treat industrial wastewater from slaughterhouses and aviary. We conducted the initial characterization of the effluent to have an idea of its constituents and to scale the system and the continuous flow. Furthermore, we characterized the soil to be used in this system. The collects are periodically made in the refrigeration industry FRICOCK FRIGORIFICAÇÃO AVICULTURA INDÚSTRIA E COMÉRCIO LTDA. for local treatment simulation. The effluent that was treated with 12 prototypes of CWSs are analyzed with some frequency. The results of these reviews were compared to the effluent coming from the industry... (Complete abstract click electronic access below)

Análise comparativa entre sistemas de resfriamento de injeção de plástico

This study aims to prove the economic feasibility of the installation of mechanical compression chillers on plastic injection molding machines in order to reduce the production cycle time of toothbrush cables in a specific case study. This evidence was confirmed by the comparative analysis of the system replaced and the new system installed. The old system had only one closed loop cooling tower which pumped chilled water to the injection molds, and the new system has the same tower sending cold water to the condensers of individual chillers installed on each injection machine. We conducted an analysis of energy efficiency in each system, showing that in terms of thermal efficiency virtually nothing has changed, but in terms of electricity demand the new system consumes 60.3 kW more. We conducted an analysis of machine productivity for both systems, showing a much higher productivity of the new system due to reduced cycle times caused by the presence of chillers and their greater cooling capacities. Equipped with data such as electricity rates, increases in operating costs and initial investments, the increase in consumption and demand of electricity plus the cycle time reduction were also calculated over so the simple payback 1 year and 2 months was reached

Desenvolvimento de um anteprojeto de um sistema de digitalização da proteção e controle aplicada a uma subestação elétrica industrial de alta tensão

The proposed of scanning of an electrical industrial substation HV is associated with a segment of the Electrotechnical area and aims the study and preliminary application of digital technologies in the protection, control, measurement and automation maneuvers aimed at a Industrial Electrical System typical High Voltage. Well intended to supervision, protection and control of major electrical and thermal quantities involved in a substation, such as voltage levels, current, temperature, power factor, loads of transformers and circuit feeders, status of interlocking devices, switching equipment maneuvers, etc

Diagóstico ambiental de empreendimentos do distrito industrial Antônio Crepaldi – Presidente Prudente/SP

Recently, the environmental concern has grown due to the higher awareness about the availability and the importance of natural resources for survival on the Earth. So, laws and regulations were implemented aiming the environmental preservation. It has being developed new systems, technologies and techniques in order to minimize wastage of resources and minimize waste generation that may cause environmental impacts, in order to abide by the laws and regulations. These techniques and systems have been developed mostly for the industrial sector, because it’s one of the most responsible for the waste generation and impacts. One of the most employed systems is the environmental management, performed during the environmental diagnosis of the area/activity. So, this study aimed the environmental assessment and the establishment of proposals for the mitigation of the most significant environmental impacts generated in five industries of the Antonio Crepaldi industrial district – Presidente Prudente, in order to contribute to environmental issues and provide greater efficiency in the productive process of these industries... (Complete abstract click electronic access below)

Proteção de sistemas eletricos industriais: relés e suas aplicações em subestações

Electrical installations in industries involving high currents and voltages considered. On the other side is the common appearance of electrical failures, caused by human error, defects in electrical equipment or electrical installation aging itself. These failures are varied, those with the highest rate of occurrence and cause much damage to electrical installations, are overcurrent and overvoltage. Therefore there is a need to project a system that can detect and minimize possible effects caused by faults in electrical installations industries. Protection systems in electric industries emerge as an alternative to control especially voltage and current magnitudes. Engineered based on the functions of the relays, protection systems are an indispensable tool for any industrial substation. But the project of such systems becomes increasingly more complex, due to technological development. Electrical equipment not develop at the same speed that the protective devices (relays), making it indispensable knowledge of integration of technologies

Anteprojeto de um sistema digital de proteção e controle aplicado em uma subestação elétrica industrial

With the growth of the demand on electric energy in the last decades, the urban distribution and transmission systems have experienced a bigger necessity to improve on the substations, the automation procedures and techniques on the operation maneuvers of such systems, in a sense that better attends the quality levels, availability, continuity and operational reliability. In this way, the objective of the present paper is to perform a study of protection and control on an electrical industrial system involving the procedures of digitizing and maneuvers automatism utilizing operational techniques and other pertinent information used in a typical high-voltage Industrial Electrical System. Analysis were made on short-circuits to specify the main components of the 138 [kV] substation, in addition, there were used digital MiCOM relays to make the protection of the present elements. With that, a program was developed to allow the user to monitor the condition of circuit-breakers through a supervision screen being able to simulate some kinds of faults, as well as observing the characteristics of each device. This way, the importance of having a fast and reliable system that ensures the equipment’s protection and the industrial process continuity due to faults on the electrical system is noticeable. It’s important to highlight that all this digitizing was mainly favored by the development of digital technology on the last years, mainly on microelectronics, also with the appearance of supervision gadgets allowing the development of complex systems in supervision and electric energy control

Avaliação da membrana P81 como agente ligante da técnica de difusão em filmes finos por gradiente de concentração (DGT) para determinação de mercúrio em sistemas aquáticos

Worldwide environmental degradation is an undesirable byproduct resulting from the increasing demand for natural resources. Water sources are suffering intense contamination since they usually receive a huge amount of domestic and industrial effluents - which are mostly wasted without proper treatment - inserting a large number of pollutants in the environment, heavy metals included. Mercury holds great toxicological importance because, under some physicochemical conditions in a water environment, Hg (II) ion turns into methylated compounds stemming from this element, such as methylmercury CH3Hg, which is highly toxic for the aquatic community in which bioaccumulation occurs. Nowadays passive sampling techniques are being developed to enable the analytical procedures which are applied in environmental monitoring. Diffusive gradients in thin-films technique (DGT) has been proven an interesting tool for the determination of labile metal species due to its in situ application. The DGT technique consists of a piston-like device on which the following series of agents is disposed: a binding agent (conventionally Chelex 100 resin), a diffusive agent, usually a polyacrylamide gel, and a membrane filter. Nevertheless, the agents conventinally used for this technique don't usually show satisfactory results in mercury sampling. The main goal of this study was to evaluate the phosphate-treated cellulose membrane (Whatman P 81), an alternative material, as binding agent in the DGT to determine labile mercury fractions in aquatic systems. In this context, we conducted a study of the behavior of this material in relation with system variables, pH and ionic strength. Afterwards we performed immersions of the DGT devices in real and enriched samples and in situ aiming the determination of mercury