Academic literature on the topic 'Turbidez'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Turbidez.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Journal articles on the topic "Turbidez"
Caldera, Yaxcelys, Kendry Willian Laguna Granadillo, and Enmanuel De Jesús Millán Laguna. "Eficiencia del coagulante opuntia ficus indica en aguas con alta turbidez y ph básico." Revista de Ingeniería Invención 1, no. 1 (September 16, 2020): 11–26. http://dx.doi.org/10.33996/rini.v1i1.93.
Full textSari, Vanessa, Marco Alésio Pereira, Nilza Maria dos Reis Castro, and Masato Kobiyama. "Efeitos do tamanho da partícula e da concentração de sedimentos suspensos sobre a turbidez." Engenharia Sanitaria e Ambiental 22, no. 2 (November 21, 2016): 213–19. http://dx.doi.org/10.1590/s1413-41522016144228.
Full textRomero Méndez, Ingrith Marcela, Yovanka Pérez Ginoris, Cristina Celia Silveira Brandão, and Marcely Ferreira Nascimento. "Eliminación de partículas similares a Cryptosporidium ooquistes por filtración directa ascendente utilizando un coagulante natural: estudio a escala piloto." Revista de Investigación Agraria y Ambiental 7, no. 2 (December 14, 2016): 15. http://dx.doi.org/10.22490/21456453.1554.
Full textLo Monaco, Paola Alfonsa Vieira, Antonio Teixeira Matos, Valdeir Eustáquio Eustáquio Júnior, Felipe Silva Nascimento, and Ed Carlo Rosa Paiva. "AÇÃO COAGULANTE DO EXTRATO DE SEMENTES DE MORINGA PREPARADO EM DIFERENTES SUBSTÂNCIAS QUÍMICAS." REVISTA ENGENHARIA NA AGRICULTURA - REVENG 20, no. 5 (November 6, 2012): 453–59. http://dx.doi.org/10.13083/reveng.v20i5.336.
Full textDelmonico, Eduardo Luiz, Arcioni Ferrari Constantino, and Charles Carneiro. "Uso de polímeros catiônicos e aniônicos como produtos auxiliares no tratamento de água." Revista Mosaicos: Estudos em Governança, Sustentabilidade e Inovação 2, no. 1 (December 17, 2020): 44–54. http://dx.doi.org/10.37032/remos.v2i1.48.
Full textArantes, Camila C., Túlio A. P. Ribeiro, José E. S. Paterniani, Marina S. S. Tateoka, and Gabriela K. E. Silva. "Uso de coagulantes naturais à base de moringa oleifera e tanino como auxiliares da filtração em geotêxtil sintético não tecido." Engenharia Agrícola 34, no. 4 (August 2014): 780–88. http://dx.doi.org/10.1590/s0100-69162014000400017.
Full textFranco, Camila Silva, Magno Deyvisson Arcanjo Batista, Luiz Fernando Coutinho de Oliveira, Gabriel Passos Kohn, and Ronaldo Fia. "Coagulação com semente de moringa oleifera preparada por diferentes métodos em águas com turbidez de 20 a 100 UNT." Engenharia Sanitaria e Ambiental 22, no. 4 (August 2017): 781–88. http://dx.doi.org/10.1590/s1413-41522017145729.
Full textFuentes, Lorena, Iván Mendoza, Alicia González, Zolange Rodríguez, and Karen Valera. "Aplicación del cardón Stenocereus griseus (Haw.) Buxb. (Caryophyllales, Cactaceae) en la clarificación de aguas con alta turbidez." Revista Científica Ciencias Naturales y Ambientales 13, no. 1 (June 1, 2019): 1–9. http://dx.doi.org/10.53591/cna.v13i1.346.
Full textCarvalho, F. T., E. D. Velini, A. L. Cavenaghi, E. Negrisoli, and R. M. Castro. "Influência da turbidez da água do rio Tietê na ocorrência de plantas aquáticas." Planta Daninha 23, no. 2 (June 2005): 359–62. http://dx.doi.org/10.1590/s0100-83582005000200025.
Full textCarrasquero, Sedolfo Jose, Stefany Montiel Flores, Emily Daniela Faría Perche, Paola María Parra Ferrer, Julio Cesar Marin Leal, and Altamira Rosa Díaz Montiel. "Efectividad de coagulantes obtenidos de residuos de papa (Sonalum tuberosum) y plátano (Musa paradisiaca) en la clarificación de aguas." Revista Facultad de Ciencias Básicas 13, no. 2 (February 9, 2017): 90–99. http://dx.doi.org/10.18359/rfcb.1941.
Full textDissertations / Theses on the topic "Turbidez"
Correia, Miguel André Andrade Cosme dos Santos. "Escoamento de correntes de turbidez sobre múltiplos obstáculos." Master's thesis, Faculdade de Ciências e Tecnologia, 2012. http://hdl.handle.net/10362/7532.
Full textLima, Niedja Maria de. "Aplicação da moringa oleífera no tratamento de água com turbidez." Universidade Católica de Pernambuco, 2015. http://www.unicap.br/tede//tde_busca/arquivo.php?codArquivo=1081.
Full textOne of the greatest challenges for science is searching for methodological processes which reflect directly or indirectly in the environment, decreasing the environmental impact and at the same time, providing the development of these processes. Water is currently one of those challenges, especially with regard to the availability and the pattern of physical-chemical and microbiological quality for consumption. Because of this problem, is that the work aims using moringa seeds to reduce turbidity, by presenting a biological coagulant that has advantages, when compared with the chemical coagulants. The water was collected in the Capibaribe River, in the municipality of Recife, Pernambuco, Brazil. The physical and chemical parameters such as pH, electrical conductivity and turbidity were determined before (pH=8 .11; CE=8.35 mS/cm; turbidez= 16.62 NTU) and after treatment. The Moringa powder oleifera were 0, 50, 100, 200, 250 and 300 mg/200mL of water, related to contact time corresponding to 0.1, 2, 4, and 6:0, which are adjusted for planning experimental CCRD. After the tests, the result obtained in the removal of up to 100 of the turbidity was with the concentration of 200 mg, with the time of sedimentation 2:0, proving the efficiency of biological coagulant present in Moringa seed oleifera for clarifying the water. Before and after the treatments were determined turbidity, pH and electrical conductivity. The results were analyzed by ANOVA table and the chart of Pearson representing respectively a significance level of 5 and correlation between variables. It was found that the time of sedimentation and pH showed correlation of 0.63; turbidity and pH was 0.49. The results observed in the electronic scanning photomicrographs indicate improvement in the particle biological sorvente dissolved.
Ferreira, Nilson Eduardo. "Dispositivo médico assistencial para análise de turbidez do líquido peritoneal dialisado." reponame:Repositório Institucional da UnB, 2017. http://repositorio.unb.br/handle/10482/31458.
Full textSubmitted by Raquel Almeida (raquel.df13@gmail.com) on 2018-03-12T18:55:37Z No. of bitstreams: 1 2017_NilsonEduardoFerreira.pdf: 4461261 bytes, checksum: d32571f7d507ec75f4f75c659fb5af11 (MD5)
Rejected by Raquel Viana (raquelviana@bce.unb.br), reason: Bom dia, Por favor, adeque o campo Orientador. Atenciosamente on 2018-03-15T12:54:37Z (GMT)
Submitted by Raquel Almeida (raquel.df13@gmail.com) on 2018-03-15T15:57:02Z No. of bitstreams: 1 2017_NilsonEduardoFerreira.pdf: 4461261 bytes, checksum: d32571f7d507ec75f4f75c659fb5af11 (MD5)
Approved for entry into archive by Raquel Viana (raquelviana@bce.unb.br) on 2018-03-15T18:09:24Z (GMT) No. of bitstreams: 1 2017_NilsonEduardoFerreira.pdf: 4461261 bytes, checksum: d32571f7d507ec75f4f75c659fb5af11 (MD5)
Made available in DSpace on 2018-03-15T18:09:24Z (GMT). No. of bitstreams: 1 2017_NilsonEduardoFerreira.pdf: 4461261 bytes, checksum: d32571f7d507ec75f4f75c659fb5af11 (MD5) Previous issue date: 2018-03-15
A diálise peritoneal é um tratamento renal substitutivo cuja principal característica é a manutenção da qualidade de vida dos pacientes. Somente no Brasil, um crescente número de doentes renais é elegível para essa terapia e o grande desafio dos profissionais de saúde é a manutenção desses pacientes o maior tempo possível no tratamento. Neste estudo, propomos um Equipamento Médico-Assistencial para auxiliar aos profissionais de saúde no controle e monitoramento de marcadores negativos, como infecções e alterações biológicas, por meio da leitura e análise da turbidez do líquido dialisado. Como processo metodológico da pesquisa, a imersão no conhecimento do perfil das pessoas portadoras de insuficiência renal, em diálise peritoneal, foi necessária principalmente na avaliação da capacidade funcional desses doentes em conviver com o problema renal e tangenciá-los com recursos e mecanismos tecnológicos. As variáveis estatísticas demonstraram que, com o passar do tempo, com as limitações próprias da idade e pela condição de saúde fragilizada, muitos pacientes carecem de um apoio mais eficiente na percepção de sinais indicativos sobre a qualidade do líquido dialisado, ou a turbidez. Inferiu-se nos testes de hipótese que não há qualquer impacto da capacidade funcional face à doença renal, mesmo em casos extremos, no uso de controle eletrônico da turbidez sendo realizada por um dispositivo com as características do proposto no estudo. Os resultados obtidos com o dispositivo, comparados com os métodos de análises padrão do líquido de infusão peritoneal, demonstraram que os valores de turbidez medidas pelo equipamento proposto permitem avaliar as condições de turbidez do líquido peritoneal dialisado com maior acurácia do que o método tradicional, por percepção meramente visual. Nas análises, por meio da observação da absorbância pela técnica da espectrofotometria por emissão de luz visível, o valor de absorbância obtido para a substância de infusão peritoneal foi em torno de 0,001; já a média obtida nas análises do líquido dialisado pós terapia foi em torno de 0,17. Esses dados evidenciam a capacidade do dispositivo desenvolvido, tanto na realização dos testes in vitro quanto nos testes in vivo, cujos valores médios ficaram em 0,010 e 0,27 respectivamente. O dispositivo eletrônico desenvolvido a partir de componentes eletrônicos de fácil aquisição, e contando com mecanismos auxiliares como software de análise, base de dados para armazenamento e consulta online pela Web, compreendem um conjunto de ferramentas capazes de promover maior segurança na avaliação da turbidez do líquido peritoneal dialisado, uma análise mais precisa em seus níveis periódicos e, principalmente, a troca de informação permanente entre paciente e profissional de saúde, minimizando a demora em tomadas de decisão em saúde face à turbidez do líquido peritoneal dialisado.
Peritoneal dialysis is a substitutive renal treatment whose main characteristic is the maintenance of patients’ quality of life. In Brazil alone, a growing number of kidney patients are eligible for this therapy and the major challenge for healthcare professionals is to maintain these patients as long as possible in treatment. In this study, we propose a Medical Assistance Kit to assist health professionals in the control and monitoring of negative markers, such as infections and biological changes, by reading and analyzing the turbidity of the dialysed liquid. As a methodological process of the research, immersion in the knowledge of the profile of people with renal impairment in peritoneal dialysis was necessary mainly in the evaluation of the functional capacity of these patients to live with the renal problem and tangentiate them with technological resources and mechanisms. Statistical variables have shown that, over time, with age limitations and poor health status, many patients lack a more efficient support in the perception of indicative signals on the quality of the dialysed liquid or turbidity. We inferred hypothesis tests that there is no impact of functional capacity against renal disease, even in extreme cases, in the use of electronic turbidity control being performed by a device with the characteristics proposed in the study. The results obtained with the device, compared with the standard methods of peritoneal infusion liquid analysis, showed that the turbidity values measured by the proposed equipment allow to evaluate the turbidity conditions of the dialyzed peritoneal fluid more accurately than the traditional method, merely visual perception. In the analyzes, by observing the absorbance by the visible light emission spectrophotometry technique, the absorbance value obtained for the peritoneal infusion substance was around 0.001; the mean value obtained in the analysis of the dialysed liquid after therapy was around 0.17. These data demonstrate the ability of the device developed in both the in vitro and in vivo tests whose mean values were 0.010 and 0.27 respectively. The electronic device developed from easy-to-acquire electronic components, and having ancillary mechanisms such as analysis software, database for online storage and consultation by Web, comprise a set of tools capable of promoting greater safety in the evaluation of the turbidity of the dialyzed peritoneal fluid, a more accurate analysis in its periodic levels and, mainly, the exchange of permanent information between patient and health professional, minimizing the delay in health decision making in the face of turbidity of the peritoneal fluid dialysed.
Marques, Guilherme Souza. "Avaliação da confiabilidade analítica de medições de turbidez em água potável." reponame:Repositório Institucional da UFPR, 2017. http://hdl.handle.net/1884/46483.
Full textCo-orientador : Profª. Drª. Karen Juliana do Amaral
Co-orientador : Prof. Dr. Gustavo Rafael Collere Possetti
Dissertação (mestrado) - Universidade Federal do Paraná, Setor de Tecnologia, Programa de Mestrado Profissional em Meio Ambiente Urbano e Industrial, em parceria com o Serviço Nacional de Aprendizagem Industrial e a Universität Stuttgart. Defesa: Curitiba, 04/11/2016
Inclui referências: f. 101-105
Resumo: A qualidade da água distribuída à população apresenta impactos diretos na área da saúde. Ciente disso o Ministério da Saúde (MS), mediante a Portaria 2914/11, exige que os parâmetros de controle da água potável sejam determinados dentro de um sistema de qualidade nos moldes da NBR ISO/IEC 17025. Um dos itens de maior relevância nessa norma é a determinação da incerteza de medição, pois apresenta uma informação quantitativa sobre a confiabilidade de um resultado de medição. Um dos parâmetros de controle exigidos pela portaria do MS é a turbidez, que está diretamente ligada a garantia de um processo efetivo de desinfeção da água, tanto que o MS reduziu o valor máximo permissível (VMP) de 1,0 NTU para 0,5 NTU, e em determinados casos é exigido um VMP de 0,3 NTU. Nesse contexto, este trabalho se propõe a avaliar a confiabilidade analítica da medição da turbidez a partir da determinação da incerteza de medição de 11 padrões de formazina e 5 amostras de água para consumo humano, todos analisados em 6 turbidímetros diferentes provenientes de 3 fabricantes distintos: D, C e P. Para tanto desenvolveu-se o cálculo da incerteza de medição da turbidez com base no Guia para a Expressão da Incerteza de Medição e avaliou-se a capacidade analítica e a compatibilidade metrológica de cada turbidímetro. Dessa forma, identificaram-se as principais fontes de incerteza do processo de medição da turbidez e todas as equações necessárias para a sua determinação. Adicionalmente, desenvolveu-se uma ferramenta para auxiliar no cálculo da incerteza desse parâmetro, a qual fornece um certificado de calibração para o turbidímetro avaliado e define uma faixa de operação para o sistema de tratamento de água garantindo a conformidade da água produzida por ele em relação às exigências da Portaria 2914/11 do MS. A partir do cálculo de incerteza de medição verificou-se que a fonte que mais contribui para a incerteza de medição da turbidez é a curva de calibração. As maiores incertezas expandidas entre os padrões analisados, considerando um nível de 99,73%, apresentaram um valor médio de 0,05 NTU para os equipamentos de marca C, 0,11 NTU para os equipamentos da marca D e 0,44 NTU para o equipamento da marca P. Foi possível afirmar a compatibilidade metrológica entre os equipamentos da marca D e C em praticamente todos os resultados, ressalvando somente determinações abaixo de 0,1 NTU para o equipamento D1, onde essa afirmativa se torna duvidosa. Os resultados obtidos permitem afirmar que somente os equipamentos da marca C e D apresentam resultados com a confiabilidade analítica necessária para afirmar a conformidade da água potável em relação à turbidez. Palavras-chave: Turbidez. Cálculo de incerteza de medição. Confiabilidade analítica. GUM. Compatibilidade metrológica. Nefelometria.
Abstract: The quality of water distributed to the population has direct impacts on health. Aware of this, the Ministry of Health (MS), through Ordinance 2914/11, requires that the drinking water control parameters must be determined within a quality system along the lines of ISO / IEC 17025. One of the most relevant items in this standard is the determination of measurement uncertainty, because it presents quantitative information about the reliability of a measurement result. One of the control parameters required by MS is the turbidity, which is directly linked to ensure an effective process of disinfection of the water, so that the MS reduced the maximum permissible value (VMP) of 1.0 to 0.5 NTU, and in certain cases it required a VMP of 0.3 NTU. In this context, this study aims to evaluate the analytical reliability of the measurement of turbidity from the determination of the uncertainty of measurement of 11 formazin standards and 5 samples of water for human consumption, all analyzed in 6 different turbidimeters from 3 different manufacturers: D, C and P. Therefore was developed the calculation of the turbidity measurement uncertainty based on the Guide to the Expression of Uncertainty in Measurement and evaluated the analytical capacity and metrological compatibility of each turbidimeter. Thus, it were identified the main sources of uncertainty of the measurement process for turbidity and all the necessary equations for their determination. In addition, it was developed a tool to assist in the calculation of the uncertainty of this parameter, which provides a calibration certificate for the assessed turbidimeter and defines an operating range for the water treatment system to ensure compliance of the produced water regarding the requirements of MS Ordinance 2914/11. From the measurement uncertainty calculation it was found that the source that most contributes to the turbidity measurement uncertainty is the calibration curve. The greatest expanded uncertainty between the standards analyzed, considering a level of 99,73%, had an average of 0.05 NTU equipment for manufacturer C, 0,11 NTU for the equipment D brand and 0.44 NTU the equipment P. It was possible to affirm metrological compatibility of the brand D equipment and C in almost all results, excepting only determinations below 0.1 NTU for D1 equipment where this statement becomes doubtful. The results allow us to affirm that only the C and D brand equipment present results with the analytical reliability required to assert the conformity of drinking water regarding turbidity. Keywords: Turbidity. Measurement uncertainty calculation. Analytical reliability. GUM. Metrological compatibility. Nephelometry.
Dücker, Richard Eduard. "Avaliação da capacidade portante de frações finas nas correntes de turbidez." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2007. http://hdl.handle.net/10183/13865.
Full textThis work presents an experimental investigation of low-density turbidity currents using different proportion of suspended sediments (mineral coal and bentonite) and/or dissolved material (salt), in order to evaluate their kinematics (head velocity), geometric (head and body height) and depositional (mass and grain size distribution) behaviour as well as their capacity of transport. Beyond that, it was investigated the use of dissolved material (salt) replacing finer sediments in these flows. Hence, three sets of experiments were conducted in a bi-dimensional channel (300 x 12.5 x 20 cm) with five different sediment ratios (100% mineral coal; 75%; 50%; 25%; 0%). Three different mixtures are used in each set. Mineral coal 207 (r = 1360 kg/m³) and salt in the first one. Mineral coal 205 (r = 1190 kg/m³) and salt in the second set and then mineral coal 205 and bentonite. The bulk density (1010 kg/m³), flow rate (6.5 litre/min), grain size distribution and volume (4 litres) were kept constant in order to compare the sets. The results were evaluated regarding the flow-deposit properties. It was verified that as the finer sediment increases in the mixture, the current dimensions became thinner, especially at the body, and the flows decelerate less than the ones with coarse sediments. In terms of depositional patterns, it was detected same trends of deposition (thinning downstream) only with a slight modification of flow transport capacity for the flows contained dissolved salt (coarser grains reaching distal zones). The comparison between the first and second sets of experiments show that the deposit generated by the second set (mineral coal 205 of lower density) is better distributed along the channel only when there is salt dissolved in the mixture. The results presented here lead us to conclude that, despite the fact that there is some difference amongst the flow-deposit properties, it is possible to use salt replacing the finer portion of the sediments, which can cause a lot of simplifications of experimental procedures and further analysis as well.
Polzin, Marcos Alexandre. "Bacia do Rio Itapocu, SC - vazões, sedimentos em suspensão e turbidez." Florianópolis, SC, 2009. https://repositorio.ufsc.br/handle/123456789/106643.
Full textMade available in DSpace on 2013-12-05T21:48:57Z (GMT). No. of bitstreams: 0 Previous issue date: 2009
O presente estudo objetivou determinar as vazões, as concentrações de sedimentos em suspensão e os valores de turbidez de modo a estimar os volumes de sedimentos em suspensão transportados em meio fluvial em três estações situadas no rio Itapocu e seu afluente, Piraí, localizados no Nordeste do Estado de Santa Catarina. Para tanto, fizeram-se necessários, além de mensurações de vazões e coletas de amostras de água em caráter mensal, análises laboratoriais. Também foram utilizados dados históricos de vazões e de pluviometria. Os resultados obtidos apresentaram vazão média de 124,77 m3/s no rio Itapocu, próximo a sua foz. As concentrações de sedimentos em suspensão variaram entre 7 mg/l e 358 mg/l, conforme as variações de vazões e de chuvas. Os valores de turbidez seguiram as alternâncias das concentrações de sedimentos em suspensão. O volume médio estimado de sedimentos em suspensão, transportado pelo rio Itapocu, foi de 1.112,28 ton/dia. This research has aimed the knowledge of the runoff, the suspension sediment concentration and the turbidity value, as estimate the suspension sediment value transported by fluvial way at two control stations located in Itapocu River and another one in its tributary river, Piraí, located in northeastern Santa Catarina. Therefore, it was necessary not only the drainage measurement and water samples gathering in monthly frequency but also laboratorial analyses. It was also used historical data and rain. The outcomes have presented a runoff average of 124,77 m3/s in Itapocu river, next to its mouth. The suspension sediment concentration has varied between 7 mg/l e 358 mg/l, according to runoff and rain range. The turbidity values have followed the suspension sediment concentration variation. The average volume estimated of the suspension sediment carried by Itapocu River, was 1.112,28 ton/day.
Faustino, Livia Marques. "Flotação por ar dissolvido aplicada à clarificação de água de elevada turbidez." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/3/3134/tde-21092018-133519/.
Full textThis research project aimed to evaluate the viability of the application of the Dissolved Air Flotation (FAD) technique in the reduction of the River Gualaxo do Norte water turbidity, polluted by at least 40 billion liters of iron ore tailings after the rupture of the Samarco tailings dam, in November of 2015. Therefore, this study\'s purpose is to determine the optimum coagulation conditions (dose and pH), flocculation (mean velocity gradient and flocculation time) and recycle rate (water-dissolved air mixture percentage) in order to obtain satisfactory quality parameters in terms of residual turbidity and removal efficiency for samples presenting varying turbidity values (1412 NTU 419 NTU 785 NTU and 3517 NTU) aiming to simulate the DAF reponse to any variations in solids concentration. Within the universe of this study, it was possible to demonstrate that the high turbidity, and especially the high density of the suspended mineral particles, led to the reduction of the flotation capacity of the microbubbles, resulting in a sediment fraction (25% - mean value). However, it was found that, in general, the coagulant ferric chloride was effective in removal of solids via FAD, promoting with 18% recycle rate, residual turbidity of 49 NTU for the most turbid water sample (initial turbidity 3517 NTU). The natural coagulant Tanfloc SL presented a favorable performance, as it was possible to clarify highly turbid samples (up to 1412 NTU) using a low dosage (2.0 mg / L) and low recycle rate (6%), resulting in in residual turbidity close to 59 NTU. In addition, the coagulant Tanfloc SL allowed greater flotation of the flocs, while the coagulant ferric chloride led to higher sedimentation percentages. With the use of ferric chloride as coagulant the iron concentration dissolved in the water was elevated, even to values higher than the limit established by the legislation. In contrast, the coagulant Tanfloc SL maintained a low concentration of dissolved metals in the water, which reinforces the advantageous application of a natural and biodegradable organic coagulant.
Manica, Rafael. "Geração de correntes de turbidez de alta densidade : condicionantes hidráulicos e deposicionais." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2009. http://hdl.handle.net/10183/19123.
Full textOur ability to interpret the deposits of sediment gravity flows in the marine realm has been greatly restricted by our lack of understanding of their flow processes. This limitation is reflected in the numerous classification schemes and the difficulty in using terms such as low and high-density turbidity currents. Here we report a novel experimentally-derived classification scheme that for the first time identifies flow types and quantifies their transition points. A series of 25 experiments with non-cohesive, mixed and cohesive high-density turbidity currents were performed in order to study the depositional-process based hydrodynamic and rheological properties of these flows. Three types of turbidity current were studied at eight different volumetric concentrations between 2.5% and 35%. The flows carried a mixture of non-cohesive (siltsized glass beads) and cohesive sediment (kaolin) at different clay-silt ratios. Detailed time-series of flow structure, suspended sediment concentration and flow velocity were collected using Digital Video Cameras, Ultra-High Concentration Meters and Ultrasonic Doppler Velocity Probes. The rheological properties of the mixtures were also evaluated. The hydrodynamic properties of the flows were determined using changing flow geometry, and high-frequency time-series, depth-average values and vertical profiles of velocity and sediment concentration. Moreover, the deposits were studied using Scanning Electron Microscopy. Six types of flows were distinguished based on a comparison of hydrodynamic, depositional and rheological properties. A 3D phase diagram was created, showing the boundaries between these flow types in terms of rheological behaviour, bulk volumetric concentration and clay concentration. The main characteristics of the flow types are: Type I: Low density flow; Newtonian; grains supported by upward component of turbulence; no hindered settling; segregation of grains and normally graded beds. Type II: Newtonian; grains supported by turbulence; turbulent flow with gently undulating high-concentration near-bed layer; partial hindered settling and partial size segregation forming partially graded beds. Type III: Newtonian; fully turbulent flow with strongly undulating high-concentration near-bed layer; hindered settling resulting in rapid deposition and generation of partially graded beds. Type IV: non-Newtonian; viscous flow; formation of “plug” and shear flow (mud layer close the bottom); viscous forces cause freezing of the flow and forming graded beds of muddy sand. Types V and VI: non-Newtonian; viscous flow with thick mud layer; grain support by matrix strength; weakly undulating internal mud layer; cohesive freezing forms an ungraded muddy sand with coarse-tail grading on top. A new process-related classification of sediment gravity flows is proposed. Type I resembles classic low-density turbidity current behavior, and types V and VI are close to the debris flow behavior. Types II and III are classified as inertial high-density turbidity currents, due to flow turbulence and model IV represents a viscous high-density turbidity current, due to the high concentrations of clay and its cohesive influence on flow and deposit.
Castro, Camila. "Propriedades reológicas de misturas utilizadas em simulação física de correntes de turbidez." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2016. http://hdl.handle.net/10183/150060.
Full textDue to the large magnitude that the turbidity currents occur on the natural environment, physical simulation on a small scale has been the tool used by researchers to expand the understanding of the development of such a phenomenon in nature. This paper presents the rheological characterization of mixtures of water and sediment that are used in the laboratory in the physical simulation of turbidity currents. The main objective of this work is to compare the data obtained via rheological test with the rheological equations often used to calculate the viscosity. The study comprises the use of a specific tool, the rheometer, for realization of the measurement of the samples and obtaining of rheograms (shear stress/shear rate) and the use of three different spindles (cone and plate, concentric cylinder and vane). Assays were performed with a mixture of water, kaolin and/or coal in different proportions of sediment in the volumetric concentrations of 5, 10, 15, 20, 25 and 30%.With the results it was also possible to determine the maximum packaging fraction through the graphical method of Liu (2000), whose found values are correspondents with those mentioned in the literature. The results demonstrate that we must be careful to generalize the use of a model to predict the relative viscosity of suspensions. Finally, have been proposed two equations to estimate the relative viscosity due of volumetric concentration of each sediment, the maximum packing fraction and the percentage of clay present in the mixture.
PENEDO, P. H. S. "RELAÇÃO ENTRE PRECIPITAÇÃO E TURBIDEZ EM CURSOS D ÁGUA NO ESPÍRITO SANTO." Universidade Federal do Espírito Santo, 2015. http://repositorio.ufes.br/handle/10/5073.
Full textObjetivou-se com a realização deste trabalho avaliar a relação entre a turbidez e características morfométricas e de uso do solo em 50 bacias hidrográficas no Estado do Espírito Santo. Foram selecionados 50 pontos de adução de água bruta operados pela Companhia Espírito Santense de Saneamento (CESAN) para tratamento e fornecimento à rede de abastecimento público. Para controle do processo de tratamento e dosagem de reagentes, dados de turbidez são coletados periodicamente. Neste estudo foi utilizado médias mensais de turbidez de 48 meses, de Janeiro de 2006 a Dezembro de 2008. As bacias hidrográficas foram delimitadas com a utilização de um modelo digital de elevação hidrologicamente consistido, obtido em ambiente SIG, bem como as respectivas características morfométricas. Os dados de precipitação média mensal de estações pluviométricas referentes ao período foram espacializados utilizando a técnica geoestatística krigagem ordinária. Os dados de uso do solo são oriundos do banco de dados do Instituto Estadual do Meio Ambiente IEMA e da base de dados geográficos do Estado do Espírito Santo Geobases. Foi realizada a análise de regressão entre a turbidez e a precipitação em todas as bacias, resultando em equações com r2 variando entre 0,90 e 0,015. Após eliminação de variáveis independentes com alto coeficiente de correlação entre si, para redução da multicolinearidade, aplicou-se a técnica de análise de agrupamento hierárquico para agrupar as bacias quanto as características morfométricas e de uso de solo similares. Foi realizada a análise de correlação parcial entre as variáveis nos grupos obtidos, para avaliação de sua influencia na turbidez. Foi realizada a análise de regressão múltipla entre as variáveis e a turbidez nos grupos obtidos, resultando em equações ajustadas com r2 entre 0,68 e 0,16. As variações da interação da precipitação, das características morfométricas e de uso do solo com os níveis de turbidez que ocorrem em escala sub-mensal não puderam ser percebidos, o que pode ter contribuído para a imprecisão dos modelos ajustados. Palavras-chave: bacias hidrográficas; análise de agrupamento; correlação parcial.
Books on the topic "Turbidez"
Soares, Claire. Microturbines. Burlington, MA: Elsevier Butterworth-Heinemann, 2007.
Find full textBarnard, Mark C. S. Pistons to blades: Small gas turbine developments by the Rover Company. Derby: Rolls-Royce Heritage Trust, 2003.
Find full textAmerican Society of Mechanical Engineers. Winter Meeting. Heat transfer in gas turbine engines - 1991: Presented at the Winter Annual Meeting of the American Society of Mechanical Engineers, Atlanta, Georgia, December 1-6, 1991. New York, N.Y: ASME, 1991.
Find full textSchmid, J. Performance of European wind turbines: A statistical evaluation from the European wind turbine database EUROWIN. London: Elsevier Applied Science, 1991.
Find full textKlein, William E. Model 0A wind turbine generator FMEA. [Washington, D.C: National Aeronautics and Space Administration, 1989.
Find full textJames, Norman J. Of firebirds & moonmen: A designer's story from the Golden Age. [United States]: Xlibris Corp., 2007.
Find full textJames, Norman J. Of firebirds & moonmen: A designer's story from the Golden Age. [United States]: Xlibris Corp., 2007.
Find full textJames, Norman J. Of firebirds & moonmen: A designer's story from the Golden Age. [United States]: Xlibris Corp., 2007.
Find full textJames, Norman J. Of firebirds & moonmen: A designer's story from the Golden Age. [United States]: Xlibris Corp., 2007.
Find full textBook chapters on the topic "Turbidez"
Harvey, Adam. "11. Crossflow Turbines; Reaction Turbines; The Francis Turbine; The Propeller Turbine and Kaplan; Draught Tubes; Reverse Pumps." In Micro-Hydro Design Manual, 173–86. Rugby, Warwickshire, United Kingdom: Practical Action Publishing, 1993. http://dx.doi.org/10.3362/9781780445472.011.
Full textKinne, Marko, Ronald Schneider, and Sebastian Thöns. "Reconstructing Stress Resultants in Wind Turbine Towers Based on Strain Measurements." In Lecture Notes in Mechanical Engineering, 224–35. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-77256-7_18.
Full textBussel, G. J. W. "Electricity Generation electricity generation with Small Wind Turbines wind turbine." In Encyclopedia of Sustainability Science and Technology, 3396–413. New York, NY: Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4419-0851-3_82.
Full textBussel, G. J. W. "Electricity Generation electricity generation with Small Wind Turbines wind turbine." In Renewable Energy Systems, 696–713. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-5820-3_82.
Full textEl-Sayed, Ahmed F. "Turbines." In Fundamentals of Aircraft and Rocket Propulsion, 839–905. London: Springer London, 2016. http://dx.doi.org/10.1007/978-1-4471-6796-9_10.
Full textMüller, Reinhard. "Turbinen." In Luftstrahltriebwerke, 155–78. Wiesbaden: Vieweg+Teubner Verlag, 1997. http://dx.doi.org/10.1007/978-3-322-90324-2_8.
Full textKurzke, Joachim, and Ian Halliwell. "Turbines." In Propulsion and Power, 357–409. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-75979-1_10.
Full textZhang, Zh. "Introduction." In Pelton Turbines, 1–11. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-31909-4_1.
Full textZhang, Zh. "Friction Effects and FFT Theorem." In Pelton Turbines, 159–70. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-31909-4_10.
Full textZhang, Zh. "Viscous Cross-Flow Through the Bucket." In Pelton Turbines, 171–78. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-31909-4_11.
Full textConference papers on the topic "Turbidez"
E. FERREIRA, N., M. A. ROCHA, L. X. Cardoso, and S. S. R. F. Rosa. "EQUIPAMENTO MÉDICO ASSISTENCIAL PARA ANÁLISE DE TURBIDEZ DO LÍQUIDO DIALISADO PERITONEAL." In Congresso Brasileiro de Eletromiografia e Cinesiologia (COBEC) e o Simpósio de Engenharia Biomédica (SEB) - COBECSEB. Uberlândia, Minas Gerais: Even3, 2018. http://dx.doi.org/10.29327/cobecseb.79100.
Full textSILVA, W. P. NEVES, E. L. BARBOSA DE BARROS, E. L. BARROS NETO, J. S. CARVALHO SANTOS, P. C. A. P. CARVALHO, and A. S. LANDEIRA. "PLANEJAMENTO EXPERIMENTAL NA DETERMINAÇÃO DO PONTO DE TURBIDEZ DOS TENSOATIVOS ULTRANEX." In XX Congresso Brasileiro de Engenharia Química. São Paulo: Editora Edgard Blücher, 2015. http://dx.doi.org/10.5151/chemeng-cobeq2014-0432-25511-182621.
Full textPascoal Costa, Cássio, Gabriel Duarte Lott, Tiago Caixeta Nunes, and Thiago Antonio Melo Euzébio. "Sistema especialista fuzzy de dosagem de oculante aplicado no controle da turbidez em espessamento de lamas em minério de ferro." In Congresso Brasileiro de Automática - 2020. sbabra, 2020. http://dx.doi.org/10.48011/asba.v2i1.1566.
Full textLUCENA, D. P., M. M. T. NASCIMENTO, N. R. S. Neto, and F. PS ANTAS. "ANÁLISE FÍSICO-QUÍMICA DE TURBIDEZ DO AÇUDE DOURADO DA CIDADE DE CURRAIS NOVOS." In Anais da Semana de Química do IFRN. Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Norte - IFRN, 2016. http://dx.doi.org/10.4322/2526-4664.030.
Full textMorais, Julio Gabriel Cordeiro de, Luana Gonçalves Torres, Robevânia da Silva Souza, Maria Beatriz Nunes de Souza, and Luiz Carlos da Silva Junior. "AUTOLIMPEZA DE SISTEMA AQUAPÔNICO BASEADO NA TURBIDEZ COM A UTILIZAÇÃO DE ARDUINO UNO." In IV Simpósio Brasileiro de Recursos Naturais do Semiárido. Associação COMVERGIR Sustentável, 2019. http://dx.doi.org/10.18068/ivsbrns.2019.068.
Full textSantos, Vera, Janaina Botari, and Alexandre Botari. "ANÁLISE E MODELAÇÃO MATEMÁTICA DO RECRESCIMENTO DE FLOCOS EM ÁGUA COM TURBIDEZ ELEVADA." In XIV Safety, Health and Environment World Congress. Science and Education Research Council (COPEC), 2014. http://dx.doi.org/10.14684/shewc.14.2014.359-364.
Full textCOMIOTTO, C. E. G., M. A. LOPES, G. L. DOTTO, and L. A. A. PINTO. "REMOÇÃO DE TURBIDEZ E SÓLIDOS TOTAIS DE EFLUENTES DO PROCESSO DE OBTENÇÃO DE QUITINA." In X Congresso Brasileiro de Engenharia Química. São Paulo: Editora Edgard Blücher, 2014. http://dx.doi.org/10.5151/chemeng-cobec-ic-01-ea-024.
Full textBORGES, T. K. S., A. S. OLIVEIRA, N. D. SILVA, and J. P. C. COUTO. "BALANÇO DE ENERGIA E EVAPORAÇÃO DA ÁGUA COM BAIXA TURBIDEZ EM RESERVATÓRIOS DE USO AGRÍCOLA." In IV Inovagri International Meeting. Fortaleza, Ceará, Brasil: INOVAGRI/ESALQ-USP/ABID/UFRB/INCT-EI/INCTSal/INSTITUTO FUTURE, 2017. http://dx.doi.org/10.7127/iv-inovagri-meeting-2017-res4360818.
Full textXAVIER, ANDRESSA SIQUEIRA, and SANDRA LúCIA NOGUEIRA. "OBTENÇÃO, CARACTERIZAÇÃO E FUNCIONALIZAÇÃO DE NANOLÂMINAS DE GRAFENO PARA REMOÇÃO DE TURBIDEZ DE EFLUENTE TÊXTIL." In XIII Congresso Brasileiro de Engenharia Química em Iniciação Científica. São Paulo: Editora Blucher, 2019. http://dx.doi.org/10.5151/cobecic2019-emn47.
Full textIURI RIBEIRO and Juliana Bortoli Rodrigues Mees. "UTILIZAÇÃO DE COAGULANTES ORGÂNICOS PARA A REDUÇÃO DE TURBIDEZ DE EFLUENTE DE ABATEDOURO E FRIGORÍFICO." In XX Seminário de Iniciação Científica e Tecnológica da UTFPR. Curitiba, PR, Brasil: Universidade Tecnológica Federal do Paraná - UTFPR, 2015. http://dx.doi.org/10.20906/cps/sicite2015-0579.
Full textReports on the topic "Turbidez"
Caldera Marín, Yaxcelys Antonia, Kendry Willian Laguna Granadillo, Enmanuel de Jesús Millán Laguna, Yoalis del Carmen González Bermúdez, Lorena del Carmen Fuentes Spooner, and Edixon Cristóbal Gutiérrez González. Efecto del PH de aguas con alta turbidez en la eficiencia del coagulante Opuntia Ficus Indica. Buenos Aires: siicsalud.com, February 2017. http://dx.doi.org/10.21840/siic/153376.
Full textLawrence P. Golan, Richard A. Wenglarz, and William H. Day. UNIVERSITY TURBINE SYSTEMS RESEARCH-HIGH EFFICIENCY ENGINES AND TURBINES (UTSR-HEET). Office of Scientific and Technical Information (OSTI), March 2003. http://dx.doi.org/10.2172/823134.
Full textGulliver, John S. Turbine Aeration Design Software for Mitigating Adverse Environmental Impacts Resulting From Conventional Hydropower Turbines. Office of Scientific and Technical Information (OSTI), March 2015. http://dx.doi.org/10.2172/1315750.
Full textAker, Pamela M., Anthony M. Jones, and Andrea E. Copping. Offshore Wind Turbines Estimated Noise from Offshore Wind Turbine, Monhegan Island, Maine Addendum 2. Office of Scientific and Technical Information (OSTI), March 2011. http://dx.doi.org/10.2172/1012295.
Full textBevelhimer, Mark, and Christopher Derolph. Market Assessment for Hydropower Turbine Design Tools Using Integrated Datasets of Dams, Turbines, Owners, and Fish. Office of Scientific and Technical Information (OSTI), October 2019. http://dx.doi.org/10.2172/1606899.
Full textG.E. Fuchs. Computer Aided Design of Advanced Turbine Airfoil Alloys for Industrial Gas Turbines in Coal Fired Environments. Office of Scientific and Technical Information (OSTI), December 2007. http://dx.doi.org/10.2172/945928.
Full textAker, Pamela M., Anthony M. Jones, and Andrea E. Copping. Offshore Wind Turbines - Estimated Noise from Offshore Wind Turbine, Monhegan Island, Maine: Environmental Effects of Offshore Wind Energy Development. Office of Scientific and Technical Information (OSTI), November 2010. http://dx.doi.org/10.2172/1006308.
Full textPint, Bruce A., Michael M. Kirka, Gary S. Marlow, Charles S. Hawkins, Jim Kesseli, and Jim Nash. Internally Cooled Turbine Rotor for Small Gas Turbine. Office of Scientific and Technical Information (OSTI), November 2017. http://dx.doi.org/10.2172/1427664.
Full textThomas, R. L. A review of potential turbine technology options for improving the off-design performance of direct coal-fired gas turbines in base load service. Office of Scientific and Technical Information (OSTI), March 1988. http://dx.doi.org/10.2172/5086915.
Full textKelley, Christopher Lee, David Charles Maniaci, and Brian R. Resor. Wind Turbine Wakes. Office of Scientific and Technical Information (OSTI), October 2015. http://dx.doi.org/10.2172/1331504.
Full text