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Desconhecido
A implantação de obras civis e de saneamento na Bacia do Una, em Belém do Pará, e as condicionantes relacionadas às características geológicas e geotécnicas
(Universidade Federal do Pará, 2004-04-26) SILVA, Kleber Roberto Matos da; ALENCAR JÚNIOR, Júlio Augusto de; http://lattes.cnpq.br/3663658632717465
This Thesis presents the civil engineering works for implementation of drainage and sanitation facilities in the area of influence of the Una canal, in the city of Belém, in the State of Pará, Brazil, involving the installation of drainage, water and sewer nets as well as road construction. This project, known as Project Una, involves an area of 3.644 ha, corresponding to approximately 21% of the continental area of city, with great part of its surface below flood level, that is, up to 3,60 m above sea level. The stratigrafy of the project area is composed basically of a thick superficial layer of very soft organic clay, that in some cases may reach over 60 m deep, overling intercalation of medium to compact sand layers and medium to hard silty clay layers. Besides the construction difficulties in soils of this nature, this work presents the many problems to resolved, as the resettlement of families of risk areas, that is, families that are living on the bed of channels, hindering the draining of the served waters and pluvial waters; the compensations of shaky residences for the works; the lack of physical space for the setting up of the works; the instability of the slopes of the marginal road of channels; the difficulties of management in the of face the extensive encircle of the area; the relationships with the community, tumultuated in some moments and, mainly, the priority of some areas, in detriment of other, for the execution of the works, in the face of available resources. Based in technical reports, projects and the author's personal experiences the thesis makes a description of the project in its several aspects, as well, makes a critical review of it, under the civil engineering’s point of view, involving planning and executions aspects of the works, with the purpose of building and setting up of the knowledge, that promote the improvement in future development in the similar projects.
Acesso aberto (Open Access)
Alagamentos no centro comercial da Campina, Belém-PA: identificação das causas e suas implicações de acordo com a percepção dos comerciantes locais
(Universidade Federal do Pará, 2016-11-24) SOUSA, Dyego Rodrigo Damázio de; SZLAFSZTEIN, Claudio Fabian; http://lattes.cnpq.br/1348005678649555; TEIXEIRA, Luiza Carla Girard Mendes; http://lattes.cnpq.br/9773700229115395
Among environmental problems of Belém-Pará-Brasil, one of them usually draws attention from Belenense society, every beginning of the year, routinely between the months of March and April. The floods in the commercial center of the Campina district usually brings with it several environmental problems, social and economic factors that directly influence the dynamics of the city. The commercial center of Campina (study area of this research) is an area very prone to floods, due to intense precipitation and high tides in the Amazonian winter, besides the large volume of waste produced in the area and a drainage system very old and little benefited by the actions agencies in the power of state government. In order to analyze how the natural and anthropic agents act causing floods and what the main implications of these floods, from the perspective of the area's own merchants, is that this research was based on, also aiming at mapping the main problem points, where floods is often more recurrent, with the perspective of providing subsidies for future research and public works in the area. For the development of this dissertation, some consultations were carried out on specialized websites (INMET, IBGE, IPEA), public agencies (SEMMA, SESAN, CPRM, CODEM, SECON) and libraries (UFPA, NUMA, NAEA), among others. In addition to data collection in the field: photographic records, identification of floods points, observations of the drainage system, precipitation and tidal action in the area, quantification of merchants, questionnaires. To reach results that demonstrated the influence of each agent, confirming that the high tide, the strong precipitation and the drainage system are the most active for the problem of floods in that area, and that these floods cause great socioeconomic losses to the merchants, to the point of making them stop working on the incidental days, lose almost half of their monthly profitability, besides causing in deficit in the local and municipal economy, Since the participation of the sector in the municipal PIB is compromised due to the low profitability caused in the period in question.
Acesso aberto (Open Access)
Análise do aproveitamento energético em redes de distribuição de água com a utilização de bombas como turbina (BFT)
(Universidade Federal do Pará, 2022-03-31) SILVA, Victor Renan Barbosa da; ISHIHARA, Júnior Hiroyuki; http://lattes.cnpq.br/3498874642887006; https://orcid.org/0000-0002-0081-7913
Climate change has intensified research related to the production of renewable energies around the world. In this sense, the present study intends to contribute to the analysis of the use of Pumps Functioning as Turbine (PAT) to replace Pressure Reducing Valves (PRV), aiming both at the control of pressure in water distribution networks, as well as , consequently, its use for energy generation. The installed PAT must be able to operate under different flow rates due to fluctuations in the water consumption rate, which makes it difficult to select the appropriate pump, therefore, the selection process of PATs to replace PRVs was optimized by combining two selection methods and PAT prediction, Williams (1995) the first method was used to select the appropriate PAT according to height and flow data available in the network, then the method of Rossi et al. (2019) was used to evaluate the characteristic curves of the pump as a turbine, with particular attention to out-of-design operating conditions. Two simulations were performed for the optimization process, considering the PAT with constant speed, applied to a real network that was divided into 3 district measurement areas (DMA). In the first simulation a PAT was added to the network to replace a PRV located at (DMA 3), in the second simulation two PATs were added to the network (DMA 3) to replace the PRVs. The results show, in simulation 2, that the pressure control was better, in addition to the recovery of electrical energy, which was 190.96 kWh/day or 69.70 MWh/year, corresponding to a reduction of 41.74 tons of CO2 not emitted. Thus, the energy recovery was 267% higher compared to simulation 1. In addition, the pressure control also presented satisfactory results, staying within the established standards. Therefore, the combination of Williams' (1995) and Rossi et al. (2019), simplified the work of BFT selection and prediction with significant results and it was possible to conclude that BFTs working at peak consumption hours can adjust the required standard pressure and, in the rest, PRVs can regulate the pressure. In this case, in addition to controlling the pressure continuously, significant renewable energy can be recovered from the WDN
Desconhecido
Análise do desempenho hidroenergético de sistemas de abastecimento de água do município de Marabá
(Universidade Federal do Pará, 2012-02-01) RODRIGUES, Rubens Chaves; PEREIRA, José Almir Rodrigues; http://lattes.cnpq.br/9918600634569244
Analysis of the performance of hydroelectric Water Supply Systems in the city of Maraba / PA, managed by the Business Unit Tocantins (UNITA), the Sanitation Company of the Para. The study was conducted in three phases, with information from the National Information System on Sanitation (NHIS) and COSANPA. In phase one was operating the routine analysis of water supply system Nova Maraba - Nova Maraba (16,738 links) and system Maraba Pioneira (2093 links) in the year 2010, with emphasis on production volumes and consumption of water and energy cost electric, in Phase 2 were determined performance indicators hydropower; ending in Phase 3 was proposed procedures for improving the management hydropower. In the survey it was found that the total volume of water produced 15.8 million m³/year required 8,817 MWh / year, resulting in spending of $ 2 million / year of electricity, which was the second largest item of operating expenses (32.2%) of COSANPA in the city of Maraba. The cost of electricity by binding to R$ 9.32 / R$ 7.66 and link / connection systems in the Nova Maraba – Cidade Nova an d Maraba Pioneira, respectively, with overall average price per kWh consumed and average expenditure of energy per cubic meter of water produced in Nova Maraba – Cidade Nova (R$ 0.23 / kWh and R$ 0.14 /m³) and Maraba Pioneira (R$ 0.21 / kWh and R$ 0.07 / m³), occurring variation in rates of energy intensity (kWh/m³) in the SAA. With the work procedures are proposed to increase the control efficiency in the operation of hydroelectric systems, such as sectorization, macro-measurement, micro-measurement, automation, which will bring positive impact in reducing costs for water supply in the city of Maraba/PA.
Desconhecido
Análise econômica de sistema de abastecimento de água público fechado: estudo de caso da Cidade Universitária Professor José da Silveira Netto - Belém (PA)
(Universidade Federal do Pará, 2012-05-18) SILVA, Adnilson Igor Martins da; DUARTE, André Augusto Azevedo Montenegro; http://lattes.cnpq.br/1135221873341973
The water supply is of paramount importance not only for human survival, but also for the development of economic activities and institutional, that is, to organic life / biotic and social life. Regarding the availability of this feature Brazil is a country with huge potential reserves to meet this end. The City University Professor José da Silveira Netto, the UFPA campus, currently produces its water, with funding through an underground aquifer, and in small quantities, also purchased from Local Dealership. However, in relation to production at the Federal University of Pará there is no knowledge about the maintenance costs of the production line, the hand labor involved, etc.. The lack of such knowledge does not allow the manager to act strategically with respect to this situation. This work aims to raise the direct and indirect costs of production of 1m³ of water treated at the City University Professor José da Silveira Netto, comparing it with the amounts charged by the Concessionaire site in order to show the manager what the most advantageous to the Administration with relation to the matter being addressed. Furthermore, future scenarios have been created in order that the activity is dynamic and growing university, beyond what was incorporated as conditions of energy cost and value of grants for water use, not yet integrated into the current cost of production. The results clearly demonstrate that the option of producing drinking water is the most economically advantageous for the institution, in any proposed scenario. Noting that the cost per m³ of produced water ranges from R$ 0,31 to R$ 0,45, while the purchase through the Local Dealership, around R$ 4,30 / m³ for the year 2011, only show viable if that price is a maximum of R$ 0,50 / m³. With this information and analyzes adequately presented clearly and technically considered, this work may be used as a management tool that will permit the public better or more adequate system of water supply in the City University Professor José da Silveira Netto.
Acesso aberto (Open Access)
Análise temporal da cobertura vegetal de um fragmento da RPPN Seringal Triunfo, Ferreira Gomes - Amapá
(Universidade Federal do Pará, 2021-12-27) SCHNEIDER, Juliana Cristina; GODOY, Bruno Spacek; http://lattes.cnpq.br/4036516695601666; https://orcid.org/0000-0001-9751-9885
The construction of dams became necessary for national development, the Amazon region, for having a great hydro-energetic potential, was also used for the construction of these projects. River Araguari's hydrographic basin has three hydroelectric dams (Coaracy Nunes, Ferreira Gomes and Cachoeira Caldeirão) built in its middle course, in the municipality of Ferreira Gomes, however the construction generated several problems, such as loss of territoriality, difficulties in subsistence of villages and the environment modification. However, in 1998, there was the enactment of the Seringal Triunfo National Heritage Private Reserve, which aims to conserve biodiversity. Therefore, there is a need for studies aimed at improving the knowledge of vegetation cover, which have occurred since the enactment of the RPPN. In this sense, the present study sought to understand whether there were changes in the vegetation cover in the RPPN from 2000 to 2015, after its approval and with the construction of UHE Ferreira Gomes and Cachoeira Caldeirão. For this, remote sensing data were used. Twelve images obtained from the TM/Landsat-5, ETM+/Landsat 7 and OLI/Landsat-8 satellites were used, delimiting the study area with the creation of two polygons (buffer), one located within the RPPN and another adjacent with approximately the same size. Digital processing techniques were applied to these images with the aid of pixel counting software. The Normalized Difference Vegetation Index (NDVI) was calculated, making it possible to obtain the median. The obtained results show that the image processing allowed differentiate its constituent elements (vegetal cover and exposed soil). The calculation of the NDVI medians, for the scenes between the years 2000 to 2015, in the area located within the RPPN ranged from 0,37 to 0,64 and the medians of the adjacent area ranged from 0,29 to 0,63, thus, the statistical analysis showed no relationship with the years (F1,10 = 0,02 and P = 0,87), indicating that during the analyzed period there was a stability in the vegetation cover, the same occurred for the adjacent area (F1,10 = 0,11 and P = 0,74). This stability in the area of the RPPN may be related to the role it plays in nature conservation and in the adjacent area to the stagnation of population growth in the municipality. The use of images from remote sensors proved to be a very valuable tool for the present research, even without carrying out an on-site visit, it was possible to calculate the NDVI. Therefore, it is recommended for future work to analyze the NDVI from years prior to 2000, that is, years prior to the approval of the RPPN, as well as on-site visits, for the validation of the components observed in the NDVI, for the NDVI classification to the studied locality.
Acesso aberto (Open Access)
Aplicação da RUSLE a uma pequena bacia hidrográfica da Amazônia
(Universidade Federal do Pará, 2013-09-26) SANTOS, Diego Benvindo Oliveira; BLANCO, Claudio José Cavalcante; http://lattes.cnpq.br/8319326553139808
The Amazon is experiencing severe changes due to anthropogenic activities, among which the transformation of forested land into areas for agricultural use stand out, intensifying erosion processes. Erosion, especially the drag of particles by runoff, causes a reduction of soil fertility impairing agricultural productivity and impacting the quality and quantity of surface water resources, a fact compounded by strong rainfall and naturally poor soils in the region. In this context, knowledge of erosion processes, such as through the use of mathematical models for predicting soil loss helps in determining management practices for sustainable use of natural resources. This study aimed to evaluate the applicability of the empirical model RUSLE (Revised Universal Soil Loss Equation) in the region, which considers the interaction between the rain energy, soil and topography characteristics, as well as the uses and management practiced. This research applied the RUSLE in the upper basin of the Igarapé da Prata stream, with an approximate area of 37 km², located in the municipality of Capitão Poço, Pará, Brazil, approximately 160 km from the capital Belém, in Pará Northeast region. This research also consisted in the construction of a geo-referenced database made from public sources; such data passed through adaptations for insertion into the environment of the ArcGIS to quantify the parameters of RUSLE, which when combined allowed the generation of a map of soil loss for the study area. The small upper basin of Igarapé da Prata presented soil loss values ranging between 0.004 and 72.48 t/ha year, with an average value of 5.12 and a standard deviation of 6.97, where approximately 12% of its total area presents environmental risks due to erosive processes.
Acesso aberto (Open Access)
Autodepuração do igarapé Santa Isabel no município de Santa Isabel do Pará - aplicação do modelo de Streeter-Phelps
(Universidade Federal do Pará, 2012-03-23) MORAIS, Kauê de Mendonça Cerqueira; BARP, Ana Rosa Baganha; http://lattes.cnpq.br/0286183914646934
This research takes place in Santa Isabel of the Pará was assessed self-purification of the namesake creek through mathematical modeling proposed by Streeter-Phelps (1925). For this, during the period October 2009 to September 2010, we analyzed the physical and chemical parameters DO and BOD and certain hydraulic variables at 11 sampling points, divided into four sections of the watercourse. The result of the modeling indicated that the parts 1 and 2 have low self-purification in, they do not obey the standards of the legislation CONAMA 357/05. Finally, it is noteworthy that, in addition to unfavorable resilience that has Igarapé Santa Isabel, there is an effective action of the bodies responsible for monitoring the environmental quality of water resources so that there is control of the quantity of pollutants discharged into the creek. This way you can avoid that in a future scenario, serious problems due to multiple use of water from this source, compromising the health and well being of people dependent Igarapé Santa Isabel.
Acesso aberto (Open Access)
Avaliação comparativa entre a estimativa do impacto gerado por efluentes domésticos de assentamentos espontâneos e de ocupação formal na bacia do Tucunduba em Belém - Pará
(Universidade Federal do Pará, 2008-04-18) MEIRA, Rose Caldas de Souza; CARDOSO, Ana Cláudia Duarte; http://lattes.cnpq.br/3138101153535395
The aim of this research is to present a comparative evaluation of environmental damage produced by different housing contexts whithin the same urban space, in a district of Belém municipality, called Guamá, one represents a formal context José Bonifácio Av., and other represents the informally produced space Riacho Doce community. This evaluation has taken into account the following features, namely: per capita consumption of water, per capita consumption of sewage, universality and equality of the provision of sanitation services (water supply, sewage), charging for water supply, quality and accessibility of services, housing context, socio-environmental features, in order to characterize the population living in those referred areas and finally to estimate the organic charge (Tonne / day) and the flux of effluents generated in spontaneous settlements and in a consolidated urban area, with the aim of identifying which housing context presents greater potential for impact in terms of flow generation and organic charge on effluents receiving basin, in this case the Tucunduba basin. Although the results are relatively close values, in the area of the Riacho Doce the flux of sewage is estimated as 44,38 m3/ day and organic charge is estimated as 13,31 Kg of DBO/day, whereas in the area of the José Bonifácio the flux of sewage is estimated as 43,06 m3/day and organic charge is estimated as Kg of DBO /day. It was possible to verify from results, that there are differences between the environmental impacts yield by the two areas above referred on the receiving basin of river Tucunduba, being that the environmental impact generated by Riacho Doce, where the population remains in contact with the effluent and under a greater sanitary vulnerability, since that effluents of Jose Bonifacio Av. are guided by drainage system and its organic charge is diluted by flux of rainwater to reach Tucunduba River (removing the contamination of its source) while the effluents from Riacho Doce are launched in natura directely below houses and in Tucunduba River.
Acesso aberto (Open Access)
Avaliação da sustentabilidade da gestão dos resíduos sólidos urbanos de municípios paraenses
(Universidade Federal do Pará, 2022-05-24) NEVES, Raisa Rodrigues; FERNANDES, Lindemberg Lima; http://lattes.cnpq.br/4641468846318922
The research aimed to evaluate the quality of urban solid waste management, considering the actions taken and the information provided in the Municipal Plans for Integrated Management of Solid Waste (PMGIRS). For this, an initial matrix composed of 73 indicators was structured, which went through filtering stages, in order to extract information with low potential to be answered by municipal managers, giving rise to the final matrix of 40 indicators incorporated into 7 dimensions, basing the elaboration of the questionnaires used in this work. Initially, there was the application of questionnaires to managers to obtain knowledge about the reality of local management; then, the questionnaires were sent to the experts selected to participate in the Delphi Method. In total, 5 groups answered the questions on the 7 dimensions, which provided scores from 1 to 5 for each indicator and weights for each dimension. Based on the managers' responses, on the final grades of each indicator and on the final weights of each dimension, it was possible to calculate the Solid Waste Management Quality Index (IQGRS), framing the values found in sustainability levels. Then, the same methodology was applied to evaluate the quality of preparation of the PMGIRS, being proposed the Quality Index of the PMGIRS (IQPMGIRS), in this way it was possible to compare what was being done in practice and what was provided in the text of the instrument. of planning. As a result in terms of management, 4 municipalities presented unsustainable conditions, 4 presented regular sustainability, 5 presented good sustainability and only 3 presented excellent sustainability. After the application of clustering techniques in terms of management, 5 groups were formed, with Inhangapi and Canaã dos Carajás included in the group with the best performance; Abel Figueiredo, Augusto Correa and Curuçá were included in the group with the worst performance. Clustering was also applied regarding the quality of PMGIRS, guaranteeing the formation of 5 groups, with the group with the best performance being formed by Abaetetuba, Bonito, Goianésia do Pará and Juruti; the group with the worst performance was composed of Acará and Concórdia do Pará. The groups with the worst performances reflected the need for investments and progressions both in terms of management practice and in terms of improvements in PMGIRS, in order to guarantee the effectiveness of PMGIRS as a decision-making tool.
Acesso aberto (Open Access)
Avaliação de parâmetros da qualidade do ar em um município amazônico do Estado do Pará
(Universidade Federal do Pará, 2025-02-21) ROSÁRIO, Abimael Silva do; MENDONÇA, Neyson Martins; http://lattes.cnpq.br/7534816053779593
This study evaluated the air quality in Barcarena, Pará, Brazil, throughout 2023, focusing on monitoring particulate matter concentrations (PM2.5, PM10, and TSP) at two points (P01 and P02) near an industrial complex with activities such as ore beneficiation and shipment, agricultural fertilizer storage and bagging, and grain shipment. These points were strategically chosen due to their location within the influence zone of various enterprises and the prevailing wind direction in the region. Samples were collected using High-Volume Samplers (HVS) over 24-hour periods, following guidelines from the Air Quality Technical Guide and CONAMA Resolution No. 491/2018. Collected data underwent descriptive and multivariate statistical analysis using Minitab Statistical software to determine PM2.5, PM10, and TSP concentrations and calculate the Air Quality Index (AQI). Results showed PM2.5, PM10, and TSP concentrations complied with the intermediate standards (PI-1) of CONAMA Resolution No. 491/2018 and the stricter limits of CONAMA Resolution No. 506/2024. The AQI for PM2.5 and PM10 was classified as "N1 - Good" throughout the study period, indicating no harmful effects on human health. Additionally, the study conducted a cost analysis of air quality monitoring campaigns, considering supplies, labor, and equipment, using ORÇAFASCIO software for budget development. This study contributes to air quality monitoring in areas with intense industrial activity, providing relevant data for environmental management and public health. Furthermore, the cost analysis offers valuable insights for planning and decision-making in similar projects.
Acesso aberto (Open Access)
Avaliação de sistemas de prevenção e contenção de inundações em bacia de drenagem urbana
(Universidade Federal do Pará, 2015-03-23) MARTINS, Vânia Carla Dias; PEREIRA, José Almir Rodrigues; http://lattes.cnpq.br/9918600634569244
This study aimed to assess the risk of flooding and propose alternatives for prevention and containment of flood for the river basin Tucunduba Oxbow River, located in Belem, from the development of methodology for hydrological and hydraulic simulation, aiming the sustainability of macro drainage system, and analyze the physical variables of the basin to be used as input data for the mathematical models, will also be presented in full simulation methodologies. The results show the application of the models mentioned, as essential tools for the prevention and containment of floods on urban drainage basins, which suffer direct influence of the tidal regime. Since the prevention and containment of extreme events such as floods, is an essential tool for urban areas subject to climatic accidents due to the amount of lives involved in the process, disease by the collapse of the sanitation system and impairments on buildings , materials and infrastructure assets.
Acesso aberto (Open Access)
Avaliação do modelo de monitoramento ambiental no Estado do Pará: estudo de caso da SEMA/PA
(Universidade Federal do Pará, 2013-05-24) SOUSA, Rodolfo Gadelha de; SZLAFSZTEIN, Claudio Fabian; http://lattes.cnpq.br/1348005678649555
One of the approaches to prevent and control environmental crises must be originated in public environmental management, particularly in the integration of its instruments: licensing, monitoring and enforcement. Monitoring has a strategic role in this process, because it is essential to decision-making in licensing activity and in supporting enforcement. However, environmental monitoring is a complex issue. In Pará, the structure of the Secretariat of State for the Environment, qualified to perform this function and the demands arising from the decentralization of environmental management and Complementary Law 140/2011, require that the state agency enhances its monitoring mechanisms of environmental management. Although there is no universal solution to do environmental monitoring, this research intends to discuss a model of government monitoring beyond the requirement of formal and bureaucratic licensing agencies to monitor its projects approved. Thus, the objective of this research was to evaluate the model of environmental monitoring as a tool for environmental management in the state of Pará, through the description of the model adopted, as well as the analysis of the causes and consequences of this model, particularly for forest management plans licensed by SEMA/PA. It also aimed to propose a strategy for environmental monitoring in the state. For this reason, the object of study at was SEMA/PA and the case study method was used, following three steps: data collection, through the agency reports and interviews; data processing, based on route guidance to characterize both the monitoring model, as well as the institutional capacity of the state agency; and, generation of results, producing a descriptive matrix of the monitoring model, which allowed to identify the strengths and barriers to the purpose of environmental monitoring in Pará, thus guiding the adaptation and recasting of the model adopted. The results show that in general there is not an institutional strategy of SEMA/PA systematic environmental monitoring, both for licensing programs and projects, as for environmental quality standards. Specifically, there are several shortcomings in the monitoring model adopted by SEMA/PA and described in this study, related to the low transparency of information, lack of procedures and work routines, lack of resources and functions of systematic monitoring in systems SIMLAM and SISFLORA, as well as gaps in monitoring of forest management plans. To address this situation it is necessary to build participatory construction by SEMA/PA of an institutional model based on principles of administrative transparency and systematic monitoring, which subsidizes and gives feedback cyclically to the instances of (re-) planning of environmental licensing and enforcement, generating alerts for immediate action
Acesso aberto (Open Access)
Condições oceanográficas, ocupação territorial e problemas ambientais na praia do Atalaia (nordeste do Pará, Brasil)
(Universidade Federal do Pará, 2012-06-28) PINTO, Ketellyn Suellen Teixeira; COSTA, Rauquírio André Albuquerque Marinho da; http://lattes.cnpq.br/4504677939464624; PEREIRA, Luci Cajueiro Carneiro; http://lattes.cnpq.br/9883400404823218
The conservation and management of the coastal zone of the Amazon region demands special attention, given the richness of its natural resources. The aim of the present study was to evaluate the impact of natural events and human activities on Atalaia beach, situated in the NE of the Brazilian state of Pará and to develop guidelines for the implementation of coastal management programs. Data were collected between November, 2008, and November, 2010. Four sets of variables were assessed: (i) physical variables (climatology, hydrodynamics and morfodinâmica), (ii) hydrological variables (water temperature, salinity, pH, turbidity, dissolved oxygen and inorganics nutrients, chlorophyll a and thermotolerant coliform levels), (iii) urban development and (iv) spatial distribution of services and infrastructure. The results indicate that climate and hydrodynamical conditions were the main factors responsible for fluctuations in water salinity, turbidity, dissolved oxygen, inorganic dissolved nutrients, and chlorophyll a concentrations. The discharge of untreated domestic sewage was responsible for bacteriological contamination, although the rapid turnover of the high-energy hydrodynamic environment limited contamination by thermotolerant coliforms. This high hydrodynamic energy, primarily during the equinoctial spring tides, and the lack of urban planning, nevertheless generates other problems, such as coastal erosion. The study area is characterized by high rainfall rates (> 1900 mm during the rainy season), NE winds with mean speeds of up to 4.36 m/s in the dry season and 3.06 m/s in rainy season, macrotidal conditions (tidal range > 4.0 m), moderate tidal current speeds (up to 0.5 m/s), and significant wave heights up to 1.5 m. In March and June (rainiest months), ebb tide currents reached a maximal of 0.4 m/s. Tidal cycle was weakly asymmetric with the ebb tide lasting up to 6 hours 40 minutes. Wave energy was slightly modulated by the low tide due to wave attenuation on sand banks. Water temperature was relatively homogeneous (27.4ºC to 29.3ºC). Salinity varied from 5.7 (June) to 37.4 (November). The water was well oxygenated (up to 9.17 mg/L), turbid (up to 118 nephelometric turbidity units), alkaline (up to 8.68), and eutrophic (maximum of 2.36 μmol/L for nitrite, 24.34 μmol/L for nitrate, 0.6 μmol/L for phosphate, and 329.7 μmol/L for silicate), and it presented high concentrations of chlorophyll a (up to 82 mg/m³). The natural conditions observed in the present study indicate the need for a review of the hydrologic criteria used for the evaluation of beaches by national and international agencies and their adaptation to the reality of the Amazon Coast. The lack of a public sanitation system has led to bacteriologic contamination and the loss of water quality. With respect to morphodynamic state, dissipative conditions were found during high and moderate hydrodynamic energy (equinoctial and nonequinoctial condition), but in November the highest wave heights generated barred dissipative characteristic, whereas during the other months non-barred characteristics dominated. Thus, this study shows that the model proposed by Masselink & Short (1993) seems to be ideal to be applied to beaches with similar characteristics to the studied beach, where wave energy is modulated by the presence of sand banks in some stages of the tide.
Acesso aberto (Open Access)
Diagnóstico de um sistema público de abastecimento de água segundo o usuário: estudo de caso do Conjunto Residencial Beija-Flor – Marituba - PA
(Universidade Federal do Pará, 2012-03-30) TAVARES, Antônio de Noronha; DUARTE, André Augusto Azevedo Montenegro; http://lattes.cnpq.br/1135221873341973; FERNANDES, Lindemberg Lima; http://lattes.cnpq.br/4641468846318922
Evaluates in the perspective of the user, the system's water supply Companhia de Saneamento Do Pará, in operation at residential Beija-Flor, in Marituba, city of Pará. The study of the information gathering stages of the supply system was divided into: field research and data processing, evaluating on the socioeconomic dimension of consumer impressions of the utility services, forms of use, and evaluation of economic sense inter-relationships and others. States that the residential Beija-Flor was built for one families only. Demonstrates analysis of factors related to waste and water leaks, which there are considerable chances of residential water meters are defective.states that the service provided by COSANPA is poor, according to the insatisfaction of local residents quality. Analyzes the price of the water, offered by COSANPA, to be expensive. Was found a great chance of environmental contamination in the groundwater, soil, and infectation through water diseases in the occurrence of water shortage in the distribution network. Estimates that among the problems in the management of the Companhia de Saneamento do Pará, is about the company's poor communication with its users and in the management of the supply system, biggest problem detected, and also to the rare occurrence of water shortages and the fact that there significant rate metering. Notes that "hear" the user is an important tool to help improve the management of water supply services.
Acesso aberto (Open Access)
Dinâmica temporal da cobertura vegetal da Comunidade Água Fria na RDS Alcobaça em Tucuruí-PA
(Universidade Federal do Pará, 2021-12-27) SILVA, Renata Albuquerque da; GODOY, Bruno Spacek; http://lattes.cnpq.br/4036516695601666; https://orcid.org/0000-0001-9751-9885
The Tucuruí Hydroelectric Power Plant has great socioeconomic and environmental importance for the southeast region of Pará, due to the formation of its artificial lake, resulting in changes in vegetation cover and loss of biodiversity. This study seeks to understand the dynamics of change in vegetation cover that occurred in the Água Fria Community, RDS Alcobaça, after the filling of the Tucuruí Reservoir, making it possible to understand the changes resulting from deforestation and subsidize proposals for interventions. Digital Image Processing (PDI) techniques were used, divided into stages: Landsat 8, Landsat 7 and Landsat 5 image acquisition; combination of spectral bands (Band 3 and Band 4) and atmospheric correction; NDVI calculation, map production and statistical analysis. To obtain the orbital images, the U.S.G.S. digital platform was used, in the months of July, August and September, from 1990 to 2020, with intervals of two years. The NDVI value showed no relationship with the years, indicating that during the years analyzed there was no significant reduction in the vegetation cover on the ground in the Água Fria community, in the Alcobaça RDS.
Acesso aberto (Open Access)
O direito à cidade e as desconformidades urbanas: identificação, classificação e mensuração através da matriz de amplitude, intensidade e taxa (MAIT)
(Universidade Federal do Pará, 2012-06-21) CARDOSO, Myrian Silvana da Silva; LIMA, José Júlio Ferreira; http://lattes.cnpq.br/5176390429456548; DUARTE, André Augusto Azevedo Montenegro; http://lattes.cnpq.br/1135221873341973
Brazil is a continental and urban country, which more than 80% of population lives in the cities, in irregular and illegal conditions with an elevated stage of insustentability to the major of population. There were many legislative and administrative advances, in special the sanction of the Statute of the City in 2001, and the creation of the Ministry of Cities in 2003, but such advances still haven't produced results in the sense to revert this precarious and urban disconforming situation, resulted from the conflicts between the occupation process and the brazilian legalization process, intending the magnitude, historical and multifaceted character of the problem, originated since the colonial period. In this sense, this research objective was to identify, classify and measure the conditions of urban disconforming. Such for, was created a model nominated MAIT - Matriz de Amplitude, Intensidade e Taxa (Amplitude, Intensity and Rate Matrix), which expresses in percentual terms this conditions, by thirty six dichotomous variables, distributed in twelve dimensions, agglutinated in four natures (Land patrimonial, Environmental urban, Infrastructural and Socioeconomic). This model was applied in 1935 realties, located in consolidated settlements, at UFPA/Union, situated around the University campus, in the neighborhoods of Guamá, Terra-Firme e Marco, land regularization object developed by the Union in the last three years. The research demonstrates that the amplitude (48,3%) and the intensity (44,8%) are presented in a moderate way, whereas the rate of is conforming realties comes to the maximum limit of 100%, but when analyzed in its distinct parts, demonstrates significant variability between these magnitudes, is either entirely or in parts of the settlement analyzed.
Acesso aberto (Open Access)
Espacialidade e sustentabilidade na Ilha do Combú: um olhar sobre a interface urbano insular como forma de contribuir para a conservação do espaço na construção da sustentabilidade local
(Universidade Federal do Pará, 2006-05-12) MATTA, Raimundo Alberto de Athayde; CARDOSO, Ana Cláudia Duarte; http://lattes.cnpq.br/3138101153535395
In this dissertation we show the results of observations and investigations, and try to interpret the urban Xrural linkage that occurs between Belém and the island of the Combu, located in the south border of the town, having like backdrop the ideas of environmental sustainability in construction in this beginning of century. For that we carried out a research with information about the profile of islands physical-territorial occupation and carried out interviews with riverside inhabitants to hear the accounts about insular way of live and his relationship with Belém; we took informations from administrative organs that apply public policys in the island; we try to identify the chains of products that compete to insular sustainability; and try to find an indication of the resultant impacts from the relation that occurs between Belém and the region of his south islands. The research established the difficulties of insular occupation maintenance, concluded not existence of productive chains developed in the island and permitted to observe that the pressures that Combu suffers are intensibily originate in the continent and not in the own local space. It concluded also that the promotion of the sustainability of Combu depends still of an effort from Belém in the construction of news routes for his own sustainability in respect to other regions around, including the island object of the research.
Acesso aberto (Open Access)
Estudo da conceituação e implementação de vias sanitárias em Belém: o caso da bacia de drenagem Estrada Nova
(Universidade Federal do Pará, 2004-09-20) LIMA, Henrique Nazareno Santos; LIMA, José Júlio Ferreira; http://lattes.cnpq.br/5176390429456548
This dissertation aims at giving a more specific account of the term sanitary road utilised in sanitary enginnering. It applies principles used in the projects of canal marginal roads, narrow short streets and trunk roads. The study is based on the case of Estrada Nova basin located in the city of Belem. After a characterisation of its fuctioning, its relationships with the urbanistc control is explored in order to be more compatible with land use control. The result of the study presents elements for the a reconsideration fo the definition wihch incorporates the urbanistic situation and needs for drainage projects to be more integrated with the urbanistic functioning of the city.
Acesso aberto (Open Access)
A Gestão de resíduos sólidos em contextos intraorganizacionais: um estudo a partir da UFPA
(Universidade Federal do Pará, 2011-12-02) ALMEIDA, Lúcia de Fátima; FARIAS FILHO, Milton Cordeiro; http://lattes.cnpq.br/0624491756992741; NASCIMENTO, Durbens Martins; http://lattes.cnpq.br/4086120226722277
This dissertation focuses on answering the following question: How did the process of implementing the Selective Collection Solidarity Program at the Federal University of Para. The program was established by Decree No. 5940 of 25th October 2006 and aims at the destination of recyclable material produced in the federal government agencies of the administration direct and indirect to associations and cooperatives of collectors. This action, despite restrictions on their disposal, contributes to poverty alleviation and environmental impact in natural areas. The objective of this research is to understand and analyze the process of implementing the Joint Selective Collection Program at UFPA. It is based on the Neo-institutionalism of Hall and Taylor and comparisons of theoretical approaches of Olson and Ostrom on the Behavioral Theory of Collective Action in the production of a Public Good. The methodology used was descriptive and qualitative. The theory led to fieldwork for the observation techniques, semi-structured interviews and documentary research. 25 interviews were conducted with staff members of the University Council of UFPA, directors and coordinators of Academic Units as well as general service staff members. As a result, was found the need of a interaction work within their own Academic Units, these together and, at the same time with the Senior Management. In Ostrom, was found the support to the theoretical direction because your conception of common use and collective decision of cooperation based on reciprocity and trust between people. She adds elements to the Olson‟s Behavioral Theory of Collective Action and show that works in search of the common good are possible if exist rules that everyone are subjected to the benefits of arising externalities. With institutional approaches of the collective action presented, this study intends to contribute with the application of Environmental Management in Public Administration. The achieved results can lead to the practice of Selective Collection Solidarity of UFPA encouraging managers in the interior of state to engage in program.