Últimos itens adicionados do Acervo: Universidade Tecnológica Federal do Paraná

A Universidade Tecnológica Federal do Paraná (UTFPR) é uma universidade pública mantida pelo governo federal e sua sede esta localizada na cidade de Curitiba, capital do estado brasileiro do Paraná.

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‣ Relação de troca entre eficiência energética e eficiência espectral em redes de comunicação sem fio com múltiplas antenas

Rayel, Ohara Kerusauskas
Fonte: Curitiba Publicador: Curitiba
Tipo: Tese de Doutorado
Português
In this dissertation, we investigate the Energy Efficiency-Spectral Efficiency (EE-SE) trade- off of a multiple antenna wireless communication system employing Transmit Antenna Selection/Maximum Ratio Combining (TAS) scheme. A realistic power consumption model (PCM) is considered, and it is shown that the use of TAS/MRC can provide significant energy savings when compared to Multiple-Input Multiple-Output (MIMO) in the low to medium spectral efficiency region, regardless the number of antennas, as well as outperform transmit beamforming scheme (MRT) for the entire spectral efficiency range. For a fixed number of receive antennas, our results also show that the energy efficiency gain of TAS over MIMO becomes even greater as the number of transmit antennas increases. The optimal value of spectral efficiency that maximizes the energy efficiency is obtained analytically, and confirmed by numerical results. Expressions that evaluate the capacity and the EE-SE trade-off for TAS under the influence of receiver correlation are obtained and it is shown that considering a non- realistic power consumption model can lead to mistakes when comparing TAS and MIMO.; CAPES; Nesta tese, a relação de troca entre Eficiência Espectral e Eficiência Energética (EE-SE...

‣ Análise quantitativa da pressão de dióxido de carbono expirado por capnografia como índice preditivo de sucesso na retirada da ventilação mecânica invasiva em pediatria

Rasera, Carmen Caroline
Fonte: Curitiba Publicador: Curitiba
Tipo: Tese de Doutorado
Português
Invasive mechanical ventilation (IMV) corresponds to one of the most common intervention in the intensive care unit; approximately 30% of hospitalized patients have difficulty in the removal of ventilatory support requiring IMV for a prolonged period. Currently, the decision to extubate patients is based on clinical experience of the medical staff and in poor criteria, which makes the decision for IMV remotion harder. The analysis of end-tidal carbon dioxide pressure (PetCO2) by capnography is a continuous method, noninvasive and capable to evaluate the ventilation during the entire respiratory period. Although there are numerous indications to measure the PetCO2, the capnograph is not used during the process of weaning from IMV. Thus, the main objective of this study was to examine quantitatively PetCO2 and indexes extracted from the capnogram in neonates and pediatric patients, as a predictor of successful extubation of IMV in the postoperative period of cardiac surgery. Initially, the capnograph was compared to other commercialized equipment and it showed high levels of correlation (r2 = 0.9872 and 0.9513, p < 0.001), and a mean difference obtained by Bland- Altman test close to zero (-0.56 and -1 mmHg), demonstrating its reliability and accuracy application. In the second phase...

‣ Remoção e recuperação de nitrogênio amoniacal de efluente gerado no processamento do couro

Taki Filho, Paulo Kiyoshi
Fonte: Londrina Publicador: Londrina
Tipo: Dissertação de Mestrado
Português
Industrial processing of leather is a sector with high potential of water, air and soil pollution. The wastewater is characterized by a mix of substances, making treatment complex. As for nitrogen, by the high values of pH and concentration, attendance patterns of release in legislation can be compromised, and become a returning inhibitor in biological treatment processes, intensively used by the industry. This research aimed to segregate deliming effluent removing substances stage, the largest source of nitrogen in the process, and promote their removal by air stripping and subsequent recovery in scrubbers. The air stripping tower was built with 150 mm diameter polyvinyl chloride (PVC) and operated in batch (5 L of wastewater) under controlled conditions of temperature, air flow (Qar) and initial pH (pHo). In the first stage were tested two configurations of filling material (GE and ECR), with the objective of determining their influence the removal of nitrogen ammonia (NAT) and estimating the mass transfer coefficient (KLA) in different Qar. The results showed that the fillings used showed similarity on the removal of the conditions studied NAT (pH = 12.2 and 25 ° C). For GE and ECR, the elevation of Qar 10 L min-1 for 25 L min-1 resulted increased removal efficiencies of 23.1% and 24.7% to 66.1% and 66.5% after 12 hours of experiment and KLA values of 0.1053 h-1 and 0.1131 h-1...

‣ Tratamentos de efluente de processo de polpa quimiotermomecânica CTMP

Grötzner, Mariana de Bittencourt
Fonte: Curitiba Publicador: Curitiba
Tipo: Dissertação de Mestrado
Português
Pulp and paper sector contributes significantly to Brazilian economy, accordingly to the crescent grow in production of pulp and paper in the last years. Effluent generated in mills of this sector is commonly formed by organic compounds originated from lignin molecules degradation. In general, contaminants are measured through color, chemical oxygen demand (COD), biochemical oxygen demand (BOD), total organic carbon (TOC), lignin compounds, turbidity, solids and phenolic compounds contents. The aim of this study was to run a technically feasible treatment for an effluent from CTMP (chemiothermalmechanical pulping) plant. According to the literature, different methods can be applied for this kind of effluent. Physical-chemical treatment of coagulation-flocculation-sedimentation was performed and the conditions of pH, coagulant type and concentration and settling time were optimized. Coagulant concentration and pH curves verified the best treatment condition, which were: pH 3.0, aluminum sulphate as coagulant, concentration of coagulant at 750 mg.L-1 and settling time of 60 minutes. The removal efficiencies obtained for these condition were 20, 40 and 50% for COD, color and turbidity, respectively. The TOC removal was 78% and toxicity was not changed due to the treatment. For the optimized condition of the treatment...

‣ Investigação de crimes de homicídio em Curitiba: proposições de ações para o aperfeiçoamento dos procedimentos de investigação com base em técnicas da DHPP de São Paulo

Prado, Alfredo Marcos do
Fonte: Curitiba Publicador: Curitiba
Tipo: Dissertação de Mestrado
Português
This research, taking advantage of the method of research-action aims to propose actions that can be implemented to improve the effectiveness of the investigation of homicides in the city of Curitiba, currently held by Homicide Division and Protection of Persons (DHPP-PR). Held bibliographic and field research in the divisional murder of São Paulo and Curitiba. Disserted on the relationship of the state, government and public administration to public security; on the historical notions of security police with their definition. Presented the taxonomy of the various active security police in Brazil. Discoursed about the concept of violence and found out before its spreading to safer areas. Finally, there were the practices of the State Department of Homicide and Protection of Persons (DHPP-SP) and its best actions, comparing them to the practices of DHPP-PR from Curitiba, pointing out the problems identified and proposing actions that could solve them.; A presente pesquisa, valendo-se do método de pesquisa-ação, objetiva propor ações que possam ser implementadas para a melhora na eficácia da investigação de homicídios na cidade de Curitiba, atualmente realizada pela Divisão de Homicídios e Proteção à Pessoa (DHPP-PR). Para tanto se realizou pesquisa bibliográfica e de campo nas divisionais de homicídio de São Paulo e Curitiba. Dissertou-se acerca da relação do Estado...

‣ Síntese e caracterização preliminar de material fotossensível para manufatura aditiva

Souza, Giuliano Cesar Breda de
Fonte: Curitiba Publicador: Curitiba
Tipo: Dissertação de Mestrado
Português
The use of manufacturing processes by adding layers of material, more specifically of additive manufacturing (AM), has been growing in recent years, strongly leveraged by technological innovations and making them an important ally in the product development process. Based on this trend, this work aims to present the proposal of a photosensitive resin synthesis for use in AM. Therefore, some syntheses composed of monomers, oligomers, photoinitiators and co-initiators, available in the national market, were developed and tested. The aim was to develop a Brazilian new acrylic resin, based in a photosensitive polymer compounds. Preliminary tests were performed to verify the minimum curing time of successive deposition layers on acrylic molds and exposed to radiation from UV-C with 250 nm of wavelength. Based on the curing times of each proposed synthesis, it was possible to determine a synthesis composed by 8,4% coinitiator, 46,2% monomers, 42% oligomer and 3,2% photoinitiatorto, to perform mechanical resistance test, bending tests, hardness tests Shore A and infrared spectrometry. Preliminary results were satisfactory, showing the possibility to use the resin in an AM process, for example, in material jetting based or vat photopolymerization based. It is possible to assert that...

‣ Produção e caracterização de redes de Bragg gravadas em fibra multimodo e aplicadas ao setor de biocombustíveis

Corotti, Raquel de Paiva
Fonte: Curitiba Publicador: Curitiba
Tipo: Dissertação de Mestrado
Português
In this work, a multimode fiber Bragg refractive sensor for the liquid fuel sector is described. The use of etched devices is proposed to overcome the drawbacks associated with sensing high refractive index samples employing fiber transducers. The transducer sensitivity can be tailored by adjusting the final diameter of the etched Bragg grating. Due to a trade between the signal-to-noise ratio and the sensitivity, operational parameters of the sensor must be designed to match the expected refractive index dynamic range for specific applications. Metrological properties of the sensor are determined, resulting in resolution from 5.6% v/v to 0.4% v/v for refractive indexes ranging from 1.4562 to 1.4729. Specific applications regarding the quality assessment of biodiesel and conformity analysis of diesel- biodiesel blends are discussed.; CAPES; Neste trabalho é descrito um sensor de índice de refração baseado em redes de Bragg em fibra multimodo para o setor de combustíveis líquidos. A utilização dos dispositivos propostos visa superar as desvantagens associadas com a monitoração de amostras de índice de refração elevados. A sensibilidade do transdutor pode ser adaptada, ajustando o diâmetro final da fibra na qual a rede de Bragg é gravada. Devido à relação entre a razão sinal-ruído e a sensibilidade...

‣ Análise setorial das características organizacionais e do nível de efetividade dos processos gerenciais de empresas de construção civil

Maia, Alessandra Tourinho
Fonte: Curitiba Publicador: Curitiba
Tipo: Dissertação de Mestrado
Português
The organizational characteristics and the level of effectivity of management processes are some of the variables that determine the efficiency of running a company. If there are gaps in these aspects, the company will have difficulties in performing its activities competently. Due to the importance of organizational structure on company’s performance, this research aims to present an analysis of the organizational characteristics and the principal management processes of construction companies, of five different sectors of activity, located in the region of Curitiba, in the state of Paraná. Therefore and applied, descriptive and quantitative research was developed. The Survey Method was chosen as the basic procedure for this study, allowing the obtaining of primary data systematically. The data were analyzed using descriptive and inferential statistics, with the application of multivariate techniques of factorial analysis, discriminant analysis and cluster analysis. In general, it is observed that these companies are characterized by the delayed traditionalism of the sector, which predominates the existence of hierarchical structures with a high level of centralization, low investment in the training of staff and little concern for environmental impacts. On the other hand...

‣ Falante: aplicativo de auxílio à fala baseado em tecnologia Android

Naranjo, Judy Lorena Huertas
Fonte: Curitiba Publicador: Curitiba
Tipo: Dissertação de Mestrado
Português
The inability to express a decision or a feeling, both provoked by a physical or psychological trauma, exposes the individual to personal and social impacts that sometimes may cause problems in his intellect or live in society. Thinking about this need and studying the methods currently available to this group of people, it was developed an application for tablets and smartphones which helps persons with difficulties in oral communication. Method: Collecting information with professionals who use Augmentative and Alternative Communication during their daily work, and making a deep study about the first words and sentences that are necessary when someone wants to be introduced in a new language, we created and classified a database of phrases and expressions. They were associated to the alternative communication symbols in order to be part of a communication board for cellphones and tablets running Android operational system. The application reproduces the sound corresponding to the meaning of the activated image through touch. Results: 400 images with sound make part of the system created as well as the possibility of the user to edit his own board with pictures of the collection. When Falante ́s interface and the architecture of the software used in mobile devices were presented to the volunteers...

‣ A educação ambiental como ferramenta para minimização e valorização de resíduos sólidos urbanos em um colégio de Mandirituba/PR

Oliveira, Everton Mario de
Fonte: Curitiba Publicador: Curitiba
Tipo: Dissertação de Mestrado
Português
The generation of municipal solid waste has been increasing in recent decades. This, coupled with inadequate management of these wastes has contributed to the worsening of environmental problems. However, in recent years many countries have begun to improve their systems for solid waste management. One of the techniques that public bodies are using to reduce the total solid waste that are managed by them, is the development and application of environmental education projects in the community, encouraging environmentally sound waste management practices. Thus, this study aimed to apply educational activities aimed at environmental education in a public school in the municipality of Mandirituba / PR as a method for minimization and recycling of municipal solid waste. For this, first a diagnosis of environmental perception of students studying at the college in relation to solid waste was conducted; and following the following activities were developed: an interactive lecture, a scavenger hunt, a competition of collecting recyclable waste, construction and installation of colored collectors, and the exposure of panels, all these activities aimed at environmental awareness regarding waste minimization solids. Diagnosis of environmental perception of students...

‣ Análise da composição e abundância da comunidade fitoplanctônica em quatro reservatórios do rio Iguaçu

Serpe, Clarisse Teixeira Adloff
Fonte: Curitiba Publicador: Curitiba
Tipo: Dissertação de Mestrado
Português
Knowledge of ecological changes in a reservoir is of great relevance to the study environmental impact and of the water quality, especially the knowledge of phytoplankton community estructure, that has a role importante in aquatic ecosystems, which respond quickly to physical and chemical changes of the water, and markedly contribute to the production of organic matter. The objective of this work was to analyze the composition and abundance of phytoplankton under the influence of abiotic variables along a longitudinal axis in four reservoirs in a cascade system, emphasizing the importance of cyanobacteria populations. Located in the state of Parana, the reservoirs of hydroeletric stations of the Iguaçu River, namely, Foz do Areia, Salto Segredo, Salto Caxias and Salto Santiago, were chosen as the study area because they receive high nutrient load of anthropogenic origin, which contributes to increased concentrations of nitrogen and phosphorus, and consequently the formation of frequent blooms. To conduct this study were collected samples for analysis of abiotic and biotic variables in twelve points in the reservoir of Foz do Areia and nine points in the other reservoirs (Segredo, Santiago e Caxias), distributed as follows: three in river region...

‣ Contribuição ao estudo fitoquímico e atividades biológicas de Aeschynomene fluminensis e de Machaerium hirtum (Fabaceae) de Porto Rico – Paraná

Ignoato, Marlene Capelin
Fonte: Pato Branco Publicador: Pato Branco
Tipo: Tese de Doutorado
Português
The Fabaceae family (Leguminosae) comprises 750 genera and over 18000 species, distributed worldwide. In Brazil it is represented by approximately 175 genera and 1500 species. The Fabaceae species are particularly rich in flavonoids and biosynthetically related compounds, such as isoflavonoids and rotenoids. Alkaloids, terpenoids and steroids are examples of other classes of substances that occur in many samples of the family. Aeschynomene fluminensis and Machaerium hirtum are among the representative species of this family in the region of Porto Rico-Paraná state, an environmental protection area. A literature review of these species indicated the absence of phytochemical and biological studies, which motivated their choice for investigation. It was also found that M. hirtum is used in folk medicine against cough, diarrhea and cancer. The phytochemical study for both species was initiated after obtaining the methanol crude extracts of leaves and twigs, by percolation, and the varieties of extract fractions by means of partitions in different polarities solvents. The obtained fractions were subjected to purification on chromatographic columns of silica gel and/or Sephadex LH-20. The chromatographic treatments performed for A. fluminensis fractions led to the isolation of the following flavonoids: kaempferitrin...

‣ A sistematização dos fatores da EUPS em SIG para quantificação da erosão laminar na bacia do Rio Anta Gorda(PR)

Tomazoni, Julio Caetano; Mantovani, Luiz Eduardo; Bittencourt, André Virmond Lima; Rosa Filho, Ernani Francisco da
Fonte: Revista Eletrônica de Geografia; Francisco Beltrao Publicador: Revista Eletrônica de Geografia; Francisco Beltrao
Tipo: Artigo de Revista Científica
Português
This work has the aim of demonstrating the USLE systematization - Universal Equation of Soil Loses, in the GIS (Geographic Information System) to quantify the losses of soils for laminar erosion of the Anta Gorda River watersheds, where is located in Santa Izabel do Oeste district, Southwestern Paraná. Therefore the work contributes for the implementação and development of methodologies automated for the characterization, the quantification and the control of the process erosive to laminate.; Este trabalho tem a finalidade de demonstrar a sistematização da EUPS – Equação Universal de Perdas de Solo, em SIG (Sistema de Informação Geográfica) para quantificar as perdas de solos por erosão laminar na microbacia do rio Anta Gorda, localizada no município de Santa Izabel do Oeste, no Sudoeste do Paraná. Portanto o trabalho contribui para implementação e o desenvolvimento de metodologias automatizadas para a caracterização, a quantificação e o controle do processo erosivo laminar.

‣ A sucessão geracional na agricultura familiar num contexto de mercantilização e modernização: um estudo em duas comunidades do Sudoeste do Paraná

Kischener, Manoel Adir
Fonte: Pato Branco Publicador: Pato Branco
Tipo: Dissertação de Mestrado
Português
The new pattern of modernization of agriculture and the commodification in force in most rural areas of Brazil is also present in the Southwest of Paraná. So, study the strategy of social reproduction of family farming and its generational succession may reflect the same factors that condition this new rurality. In this sense, looking ascertain what are the factors affecting the generational succession of the family farm and see how the modernization of agriculture to become more complex; to this end, we started with a comparative study between two communities, which required interviews with 50 rural families followed by focus group sessions. From this study, it was noted that the factors that favor the permanence of young people in rural areas are mainly income, community values and the inclusion of life projects of the children in the family social reproduction strategies.; O novo padrão de modernização da agricultura e a mercantilização que vigora na maior parte das regiões rurais do Brasil também se faz presente no Sudoeste do Paraná. Assim, estudar a estratégia de reprodução social da agricultura familiar e sua sucessão geracional pode refletir os mesmos fatores que a condicionam nessa nova ruralidade. Neste sentido...

‣ Indução floral e vigor da jabuticabeira com aplicação de bioreguladores e irrigação

Kosera Neto, Carlos
Fonte: Pato Branco Publicador: Pato Branco
Tipo: Dissertação de Mestrado
Português
The fruit production sector is one of the major generate income, employment and rural development of national agribusiness. Brazil is one of the main native fruits genetic diversity centers all over the world, which several present domestication potential to commercial use, like jabuticaba fruit tree, that it is specie adapted to several Brazilian edaphoclimatic conditions, which can be used by food, cosmetic and pharmaceutical industry. Among the ifficulties, that still it doesn’t become this potentiality in reality is the long juvenile period, the yield time concentration and the difficult culture, because of vigorous growing. In the implantation of commercial orchards is necessary research to provide culture strategies for reduction of plant vigor, to use in density crop, flowering and yield higher, especially in offseason. Then, it can to use regulators that have antagonism action against growth hormones and it can promote flowering and growth plant control. The products used with successfully in other crops were calcium carbide, ethephon and paclobutrazol (PBZ). Therefore, the aim of this work was evaluate the vegetative and reproductive behavior in the jabuticaba fruit tree (Plinia cauliflora) with regulator application and irrigation. The study was carried out at UTFPR - Câmpus Dois Vizinhos...

‣ Reflexões acerca das racionalidades em unidades de conservação: o caso do Refúgio de Vida Silvestre dos Campos de Palmas

Strapazzon, Marcia Casarin
Fonte: Pato Branco Publicador: Pato Branco
Tipo: Dissertação de Mestrado
Português
At one point it is evident that contemporary environmental problems are the result of human activities and have social origin, rooted in the dominant thought system. Thus, instruments are created - protected areas - to protect nature of human action. In Brazil, this instrument was made official by the Sistema Nacional de Unidades de Conservação, which created 12 categories of protected areas, divided into two groups, full protection and sustainable use. This study aimed to analyze a particular category of protected area, the Wildlife Refuge. This category belongs to the group of strictly protected areas of nature (is allowed only indirect use), but can consist of private property. Thus, toured the historical creation of the Sistema Nacional de Unidades de Conservação, investigating, in that context, the origins of the category. It was observed that, accidentally or not, the Wildlife Refuge category has an unprecedented configuration, and in front of the current environmental panorama, which entails a paradigm shift, may prove appropriate and feasible. The category analysis led to reflection on the situation of the owners whose lands are covered by such conservation unit, which face a confrontation of rationalities - an environmental rationality is imposed on the dominant rationality...

‣ Obtenção de oligossacarídeos prebióticos a partir da hidrólise fosfórica da biomassa de microalgas utilizadas na biomitigação de CO2 de efluente gasoso de churrascaria

Leal, Bruna Elise Sauer
Fonte: Curitiba Publicador: Curitiba
Tipo: Dissertação de Mestrado
Português
Microalgae have been utilized in the environmental area in CO2 biomitigation processes as they use it in their metabolism for the production of cellular biomass, which can then be utilized for nutritional and commercial purposes. Within this scope, the current research elected as the main objective, the obtention of nutraceutical oligosaccharides from microalgae biomasses through a phosphoric acid hydrolysis under different and moderated pH and thermopressurization conditions. One biomass, coming from a gaseous effluent treatment system from a steakhouse was compared to commercial biomasses, Chlorella vulgaris e Spirulina platensis. Microscopic and physicochemical analyses were carried for these biomasses characterization, namely moisture, ashes, carbohydrates, lipids and protein contents. Alkaline methyl transesterifications were realized in the total lipid fractions and then the corresponding products analyzed by chromatographic methods. As compared to the native biomasses, they were subjected to pretreatments: organic solvents removal of lipids, cell wall purification with detergent SDS (Sodium Dodecyl Sulphate) and recovery of polymeric molecules of the later extracts. These derived biomasses fractions, as well as the whole ones were partially or totally hydrolyzed with thermopressurization at 4.5 atm (156 °C) using diluted phosphoric acid at pH 2 or with water as controls (solvolysis). Enzyme assays were further performed with α- amylase and β-1...

‣ Subproduto da indústria vinícola no controle de Meloidogyne javanica

Reiner, Driéli Aparecida
Fonte: Pato Branco Publicador: Pato Branco
Tipo: Dissertação de Mestrado
Português
The objectives of this study were to evaluate the nematicidal activity of different concentrations of an aqueous extract, which was taken from the by-product of the wine industry, on hatching and mortality rates of 2nd stage juveniles (J2) of Meloidogyne javanica and the effect of the incorporation of this by-product into the soil on J2 nematode hatching and viability; identify, through high-performance liquid chromatography the phytochemical composition of the aqueous extract of the byproduct of the wine industry; evaluate, under greenhouse conditions, the effect of different by-product of the wine industry doses incorporated into the soil on nematode control and their effect on tomato plant growth; and evaluate the period of time between by-product of the wine industry incorporation into the soil and tomato plant transplantation, with regards to M. javanica control, and the effect of by-product incorporation into the soil on tomato plant resistance to M. javanica. The aqueous extracts of the by-product of the wine industry, starting from the 1.5% concentration, promoted a reduction in M. javanica J2 hatching of more than 94%. When the effect on ematode mobility was evaluated, it was found that the 2.5% concentration of the aqueous extract promoted a mortality rate of up to 64% in J2 M. javanica. When the different by-product of the wine industry kg-1 of soil concentrations were incorporated into the soil...

‣ Identificação de possíveis intervenções voltadas para a redução de riscos de inundações na bacia hidrográfica do rio Palmital localizada na área do município de Pinhais/PR

Pinheiro, Andrea Magnuski
Fonte: Curitiba Publicador: Curitiba
Tipo: Dissertação de Mestrado
Português
The River Basin Palmital plays an important role in the availability of water resources for the local and neighboring regions society. Understanding the importance of water resources and all the dynamics involved , this study aims to identify possible interventions to contain floods in River Basin Palmital within the limits of the municipality of Pinhais - PR . Raising data for improved environmental planning area, providing information which would facilitate compliance with the Master Plan of the City of Pinhais , county to which the proposed research interventions to reduce flood risks. To develop the study was organized a database of environmental data from the catchment area of the river Palmital , integrating the altimetry , and gauged precipitation data , identifying the historical flood data that generated mainly socio- economic losses . First, there was the study of the physical and geomorphological characteristics of the basin generating thematic maps using ArcView software . From the rainfall and runoff data a study of quota river flow Palmital with the highest precipitation was performed by relating these data with the floods that occurred days . The result identified as flood losses were incurred for the years 2003 , 2009...

‣ Avaliação da qualidade das águas e sedimentos da sub-bacia do rio Barigüi, região Metropolitana de Curitiba-PR

Silva, Paulo Roberto Bairros da
Fonte: Curitiba Publicador: Curitiba
Tipo: Dissertação de Mestrado
Português
This study evaluated the water and sediment quality of the Barigui River sub-basin, Greater Curitiba, in terms of the presence, chemical availability, and toxic potential of common chemical species as well as trace elements. Urban basin sediments are complex multi-element environmental matrices and have become the subject of many studies because of their active character. These matrices interchange chemical species with the water column, which affects its quality, influences its toxicity, and interferes with aquatic life. Four sampling operations were completed at three different sites, subject to several environmental impacts due to urbanization and industrialization, in order to cover distinct regions of the sub-basin. For the quantification of chemical species in the sediments and water column, flame-atomizer atomic absorption spectroscopy (FAAS) and energy-dispersive X-ray fluorescence spectroscopy (EDXRF) techniques were used, according to protocol 3030B (APHA), 3050B (USEPA) and 200.2 (USEPA). Auxiliary parameters such as redox potential, pH, ammonia, total phosphorus and orthophosphate, total alkalinity, and chlorophyll a were determined for the water samples. The water samples were also characterized by molecular absorption spectroscopy and molecular fluorescence spectroscopy. The trophic state of the water was established using the trophic state index (TSI) and the determined values were compared with the regulatory values pertaining to CONAMA (2005) resolution 357. The sediments were subjected to thermal analysis (TGA/DSC)...