Academic literature on the topic 'Quality control. eng'
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Journal articles on the topic "Quality control. eng"
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Manyele, Samwel, and Nyakorema Rioba. "Monitoring Saccharification Process in Brewery Industry Using Quality Control Charts." Engineering 08, no. 07 (2016): 481–98. http://dx.doi.org/10.4236/eng.2016.87045.
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Burghardt, Andrzej, Krzysztof Kurc, Dariusz Szybicki, Magdalena Muszyńska, and Jacek Nawrocki. "Robot-operated quality control station based on the UTT method." Open Engineering 7, no. 1 (2017): 37–42. http://dx.doi.org/10.1515/eng-2017-0008.
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AbstractThis paper presents a robotic test stand for the ultrasonic transmission tomography (UTT) inspection of stator vane thickness. The article presents the method of the test stand design in Autodesk Robot Structural Analysis Professional 2013 software suite. The performance of the designed test stand solution was simulated in the RobotStudio software suite. The operating principle of the test stand measurement system is presented with a specific focus on the measurement strategy. The results of actual wall thickness measurements performed on stator vanes are presented.
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Yoon, Hyejin, Won Jong Chin, Hee Seok Kim, and Young Jin Kim. "A Study on the Quality Control of Concrete during the Slip Form Erection of Pylon." Engineering 05, no. 08 (2013): 647–55. http://dx.doi.org/10.4236/eng.2013.58078.
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Jalham, Issam. "Process Control and Quality Improvement of Plug-Assisted Thermoforming Process: A Case Study." Journal of King Abdulaziz University-Engineering Sciences 16, no. 1 (2005): 15–30. http://dx.doi.org/10.4197/eng.16-1.2.
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Zaitseva, N. V., A. S. Sboev, S. V. Kleyn, and S. A. Vekovshinina. "Drinking water quality: health risk factors and efficiency of control and surveillance activities by Rospotrebnadzor." Health Risk Analysis, no. 2 (June 2019): 44–55. http://dx.doi.org/10.21668/health.risk/2019.2.05.eng.
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Gomes, Daniele Rodrigues, Maristela Machado Araujo, Ubirajara Rossi Nunes, and Suelen Carpenedo Aimi. "Biometry and germination of Balfourodendron riedelianum Eng. Eng." Journal of Seed Science 38, no. 3 (2016): 187–94. http://dx.doi.org/10.1590/2317-1545v38n3159311.
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Abstract This study investigated the biometry, pre-germination treatments and substrates for the germination of diaspores of Balfourodendron riedelianum. The diaspores were characterized during germination according to their length, width, thickness, thousand kernel weight (TKW) and water content. Dormancy overcoming was tested by diaspore scarifying with sandpaper, sulfuric acid immersion, water and water at 100 °C; together with the control (untreated), they were associated to different substrates (including paper (EP), sand (EA) and vermiculite (EV). Germination tests were conducted in a germination chamber at 25 °C. The physiological quality of seeds was performed through the first count, germination and germination speed index (GSI). Biometric data were analyzed in frequency classes and the pre-germination treatment by analysis of variance. Diaspores are on average 18.59 mm long; 9.03 mm wide and 9.38 mm thick. The treatment of immersion in cold water for 48 hours and the substrate vermiculite (EV) were effective to overcome dormancy and recommended for germination tests.
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Skutnik, Zdzisław, Marek Bajda, and Mariusz Lech. "The selection of sealing technologies of the subsoil and hydrotechnical structures and quality assurance." Open Engineering 9, no. 1 (2019): 420–27. http://dx.doi.org/10.1515/eng-2019-0050.
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AbstractVarious types of trenchless methods are extensively used to create engineering barriers for the purpose of achieving relatively low hydraulic conductivity of the subsoil and hydrotechnical structures. The most commonly used technologies of the grouting curtain creating are the DSM (Deep Soil Mixing), WIPS (Vibro Injcted Thin Wall), low-pressure injection and jet-grouting. Vertical barriers are widely used in environmental control systems to restrict the lateral spreading of liquid or gaseous contaminants and for seepage control through and beneath a levees. The barrier walls are constructed in a single or two phases using a slurry composed mainly of bentonite, cementitious materials and water. Often to solve complex geotechnical problems the technologies are combined (e.g. combining DSM and jet grouting). In the paper some examples of practical application of chosen types of technology dedicated different problems solving are presented. The results of geotechnical investigations of hydraulic permeability, shear strength and depth control of cut-off wall are given. The tests were carried out using BAT system, Cone Penetration Tests (CPT) and drillings. The presented test results should help define the technical and financial criteria that should be used to compare grouting based methods and other techniques applicable to the same geotechnical special works. These recommendations should permit an adequate application of grouting techniques and contribute to finding solutions for the delicate problem of ground sealing, notably when proceeding with hydrotechnical or environmental structures placed below water table.
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Koralewski, Grzegorz. "Modelling of the system “driver - automation - autonomous vehicle - road”." Open Engineering 10, no. 1 (2020): 175–82. http://dx.doi.org/10.1515/eng-2020-0016.
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AbstractThe work presents a simulation model of a “driver–automation–autonomous vehicles–road” system which is the basis for synthesis of automatic gear shift control system. The mathematical description makes use of physical quantities which characterise driving torque transformation from the combustion engine to the car driven wheels. The basic components of the model are algorithms for the driver’s action logic in controlling motion velocity, logic of gear shift control functioning regarding direction and moment of switching, for determining right-hand side of differential equations and for motion quality indicators. The model is realised in a form of an application software package, comprising sub-programmes for input data, for computerised motion simulation of cars with mechanical and hydro-mechanical – automatically controlled – transmission systems and for models of characteristic car routes.
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Alhmoud, Lina, and Hussein Al-Zoubi. "IoT Applications in Wind Energy Conversion Systems." Open Engineering 9, no. 1 (2019): 490–99. http://dx.doi.org/10.1515/eng-2019-0061.
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AbstractRenewable energy reliability has been the main agenda nowadays, where the internet of things (IoT) is a crucial research direction with a lot of opportunities for improvement and challenging work. Data obtained from IoT is converted into actionable information to improve wind turbine performance, driving wind energy cost down and reducing risk. However, the implementation in IoT is a challenging task because the wind turbine system level and component level need real-time control. So, this paper is dedicated to investigating wind resource assessment and lifetime estimation of wind power modules using IoT. To illustrate this issue, a model is built with sub-models of an aerodynamic rotor connected directly to a multi-pole variable speed permanent magnet synchronous generator (PMSG) with variable speed control, pitch angle control and full-scale converter connected to the grid. Besides, a large number of various sensors for measurement of wind parameters are integrated with IoT. Simulations are constructed with Matlab/Simulink and IoT ’Thingspeak’ Mathworks web service. IoT has proved to increase the reliability of measurement strategies, monitoring accuracy, and quality assurance.
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Martina, Hlatká, Korec Karel, and Kampf Rudolf. "Design of evaluation tool used to improve the production process." Open Engineering 9, no. 1 (2019): 641–49. http://dx.doi.org/10.1515/eng-2019-0074.
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AbstractThis paper is devoted to the use of statistical methods to ensure the highest quality processes. Specifically, it deals with creating an application in MS Excel which evaluates standard statistical parameters and if the required process capability indices are complied with, then it is possible to proceed to SPC (statistical process control). The application was created in MS Excel using the Visual Basic for Application programming language. In addition to the required calculations, the application also generates forms with all important data. This application was designed to reduce reject rate and improve the production process in a contracting company.
Dissertations / Theses on the topic "Quality control. eng"
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Passoni, Mariana Henrique. "Análise químico-farmacêutica de teicoplanina em pó liofilizado /." Araraquara : [s.n.], 2009. http://hdl.handle.net/11449/96230.
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Orientador: Hérida Regina Nunes Salgado<br>Banca: Hérida Regina Nunes Salgado<br>Banca: Márcia da Silva<br>Banca: Cristiane Masetto de Gaitani<br>Resumo: A teicoplanina é um antibiótico glicopeptídico, cujo mecanismo de ação é inibir a síntese da parede celular bacteriana. Esse antibiótico vem sendo bastante utilizado no Brasil no combate a bactérias Gram-positivas multiresistente a fármacos. Em razão deste fármaco ser relativamente novo no mercado, não há metodologia de análise descrita em compêndios oficias. Este trabalho apresenta procedimentos para quantificação de teicoplanina em pó para solução injetável. O método espectrofotometrico na região ultravioleta a 279 nm, na faixa de concentração de 60,0 a 110,0 μg/mL (r2 = 0,999), apresentou linearidade, precisão e exatidão, com teor médio no pó para solução injetável de 97,45%. A cromatografia líquida de alta eficiência utilizou coluna C18 (4,6 x 250 mm, 5 mm) e a fase móvel constituída de metanol : acetonitrila (50:50, V/V), na faixa de concentração de 70,0 a 120,0 mg/mL (r2 = 0,999) e apresentou linearidade, precisão e exatidão, com teor médio no pó para solução injetável de 99,12%. Os dados foram calculados pela análise de variância (ANOVA), permitindo assim aplicação destes métodos no controle de qualidade.<br>Abstract: Teicoplanin is a glycopeptide antibiotic, which inhibits the bacteria cellular membrane synthesis. This antibiotic is quite new and has been used in Brazil to combat Gram-positive bacteria that are multi-drug resistant. There is not described analytical methodology in official literature. This work reports procedures for the quantification of teicoplanin in pharmaceutical forms. In the UV-spectrophotometry at 279 nm, the Lambert-Beer law was obeyed in the concentration range from 60.0 to 110.0 μg/mL (r2 = 0,999), whose analysis presented linearity, precision and accuracy, with average in powder for injection of 97.45. In the second method, HPLC methods, the samples were injected into a Waters Symmetry C18 column (4.6 x 250 mm, 5 mm). The mobile phase was consisted of acetonitrile and methanol (50:50, V/V). UV detection was performed at 279 nm, and the samples and reference solutions were prepared in the mobile phase; the calibration curve for teicoplanin was linear from 70.0 to the 120.0 mg/mL range (r2 = 0.999). The procedure presented linearity, precision, accuracy, with average in powder for injection of 99.12%. The statistical data were calculated by analysis of variance (ANOVA), that it allows the application of the analytical methods in the quality control of pharmaceutical preparations.<br>Mestre
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Leoni, Roberto Campos. "Estudo do desempenho dos gráficos de controle quando a média do processo oscila de acordo com o modelo AR(1) /." Guaratinguetá : [s.n.], 2011. http://hdl.handle.net/11449/93086.
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Resumo: No planejamento dos gráficos de controle destinados ao monitoramento da média do processo, assume-se que esta permanece fixa em seu valor alvo até a ocorrência de uma causa especial, que a desloca. Em muitos processos, contudo, é mais razoável supor que a média oscila mesmo na ausência de causas especiais. Para descrever este comportamento oscilatório, tem-se utilizado o modelo autoregressivo de 1ª ordem, AR (1). Quando esta oscilação é grande, o melhor desempenho do gráfico de X é obtido com amostras unitárias. O mesmo não se observa com a carta de EWMA (exceto quando o parâmetro de ponderação é próximo de um); os melhores desempenhos são obtidos com a adoção de amostras de tamanho n>1 e pequeno, mesmo quando o objetivo é a detecção rápida de grandes deslocamentos da média. Neste estudo, utiliza-se como medida de desempenho o TES - tempo médio entre a ocorrência de uma mudança na posição em torno da qual a média oscila e sua sinalização pelo gráfico de controle. Quando a média do processo oscila, o TES passa a ser uma função do número esperado de visitas aos estados transientes de uma cadeia de Markov<br>Abstract: The design of the control charts for the process mean, assumes that this parameter remains fixed on its target value until the occurrence of a special cause that shifts it. In many cases, however, it is more reasonable to assume that the mean wanders even in the absence of special causes. To describe this wandering behavior, has used the AR(1) model. When the wandering behavior is responsible for significant proportion of the data variability, the best performance of the X chart is obtained with samples of size one (n=1). The same is not true with the EWMA control chart (except when the smoothing parameter is very close to one), its best performance is achieved with the adoption of n>1 and small , even to detect large changes in the process mean position. In this study, the average time between the occurrence of a change in the process mean position and the signal (TES) - is used to assess the chart's performance. With the process mean wandering, this measure of performance becomes function of the expected number of visits to the transient states of a Markov chain<br>Orientador: Antonio Fernando Branco Costa<br>Coorientador: Marcela Aparecida Guerreiro Machado<br>Banca: Mauro Hugo Mathias<br>Banca: Fernando Antonio Elias Claro<br>Mestre
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Moraes, Dorival Russo de. "Avaliação da qualidade dos serviços hospitalares com a adaptação do modelo SERVQUAL em dois hospitais de Bauru - SP /." Bauru : [s.n.], 2012. http://hdl.handle.net/11449/99815.
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Orientador: Manoel Henrique Salgado<br>Banca: Regina Celia Baptista Belluzzo<br>Banca: Jose de Souza Rodrigues<br>Resumo: A área de saúde pública e privada, segmento de serviços, em 2012 consumiu 8% (oito por cento) do Produto Interno Bruto Brasileiro, apesar desse volume de recursos direcionados para a área da saúde, em comparação com outros países, o investimento deveria receber um aporte adicional de um terço do valor atual. No cenário atual, faltam recursos compatíveis com a necessidade da população (que envelhece), e sobram queixas dos usuários, prinicipalmente pela demora no atendimento e na falta de atenção dos agentes envolvidos. A saúde suplementar (setor privado) que iniciou suas atividades no Brasil na década de 50, atendendo as necessidades dos funcionários de algumas empresas multinacionais que se instalavam no país, atende hoje 46 milhoes de beneficiários. Com menor número de usuários e com mais recursos, o setor privado recebe menos reclamações que o setor público, mas as reclamações existem e em número considerável, pelas mesmas causas do setor público. O modelo SERVQUAL desenvolvida e posteriormente aperfeiçoada por Parassuraman, Zeithaml e Berry (1990), permite a mensuração da qualidade dos serviços prestados. A medição proposta pelos autores começa na expectativa do cliente, antes do consumo, e a sua percepção após a utilização, bem como a visão dos gestores, dos fucionários e ainda o impacto da comunicação midiática ada empresa na expectativa do cliente. O presente trabalho tem como objetivo: avaliar a qualidade hospitalar em dois hospitais de Bauru com a adaptação do model SERVQUAL. A pesquisa foi realizada em dois momentos: no momento da venda do plano, antes do uso (questionário de expectativa) e, no momento do uso (questionário de percepção), comparando sua expectativa (antes do uso) e a percepção (após o uso). Seguindo a metodologia proposta pelos autores, foram... (Resumo completo, clicar acesso eletrônico abaixo)<br>Abstract: The public and private health area services segment in 2010 consumed 8% (eight percent) of the Brazilian Gross Domestic Product, despite this volume of resources allocated to the health sector, compared with other countries, the investment should receive an additional one third of the current value. In the current scenario, there is a lack resources compatible with the needs of the population (aging), and abound complaints from users, mainly by delays in care and the lack of attention of the agents involved. The supplimental health (private sector) that began operations in Brazil in the 50s, meeting the needs of employees of some multinational companies settled in the country, today serves 46 million beneficiaries. With fewer users and more resources, the private sector receives fewer complaints than the public sector, but there area complaints and in a considerable amount, for the same reasons the public sector. The SERVQUAL model developed and subsequently refined by Parasuraman, Zeithml and Berry (1190), permits the measurement of service quality. The measure proposed by the authors starts on customer expectation, before consumption, and their perception after use, as well as the vision of managers, employees and even the impact of media communication company in customer expectation. The present sudy aims: to assess hospital quality in two hospitals in Bauru with the adaptation of SERVQUAL model. The research was conducted in two stages: at the time of the plan sale, before use (expectation questionnaire), and at the time of use (perception questionnaire), comparing their expectation (before use) and perception (after use). Following the methodoloy the methodology proposed by the authours, gaps were identified in questions and dimensions of quality. In summary, the adaptation of the model SERVQUAL questionnaires... (Complete abstract click electronic access below)<br>Mestre
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Casa, Jamille 1972. "Controle fitossanitário no cultivo do tomateiro nos sistemas orgânico e biodinâmico de produção /." Botucatu : [s.n.], 2008. http://hdl.handle.net/11449/103212.
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Orientador: Francisco Araújo Câmara<br>Banca: Edson Luiz Furtado<br>Banca: Regina Marta Evangelista<br>Banca: Euclides Schallenberger<br>Banca: Daniel Melo de Castro<br>Resumo: No modelo dominante de produção, o tomate (que integra o hábito alimentar da população em geral), demanda uso intensivo de agrotóxicos, por apresentar grande suscetibilidade a insetos e doenças durante a fase de cultivo. Assim, os agricultores têm dificuldade na produção orgânica, pela complexidade de problemas fitossanitários que esta espécie apresenta. O presente trabalho objetivou identificar cultivares de tomate que se adaptem ao cultivo agroecológico, e avaliar dois sistemas de produção, orgânico e biodinâmico, com técnicas alternativas de controle de pragas e doenças. A cultivar Epagri 19, foi selecionada do experimento de identificação de cultivares, e juntamente com a Epagri 17, foram as mais resistentes a problemas fitossanitários, sendo a Epagri 19 avaliada no sistema orgânico e biodinâmico com tratamentos fitossanitários alternativos. Constatou-se que todos os tratamentos alternativos foram eficientes no controle de doenças do tomateiro. O sistema biodinâmico apresentou menor severidade de doenças que o orgânico. Quanto à produtividade de tomate, não houve diferença entre os sistemas. Foram avaliados parâmetros de qualidade dos frutos de tomate que incluíram: perda de massa, textura, pH, sólidos solúveis, acidez titulável e açúcares redutores. Os sistemas de produção orgânico e biodinâmico, juntamente com a utilização de defensivos alternativos, e o uso de cultivares resistentes permitem o cultivo de tomate, menos dependente de agrotóxicos, não agredindo o meio ambiente e a saúde humana.<br>Abstract: In the dominant model of production, the tomato (which integrates the food habits of the population in general), demands an intensive use of agrochemicals, for its susceptibility to insects and diseases during cultivation phase. So, farmers meet dificulties in the organic method of production, because of the complexity of problems that this species presents. The purpose of the present work was to turn, to identify cultivars of tomato adapted to the organic and biodynamic methods of production, to evaluate these two systems, with alternative techniques for pest and disease control. The cultivars Epagri 19 and Epagri 17 were selected resistance due to there to pests and diseases. Epagri 19 was evaluated through the organic and biodynamic systems, with alternative treatments. It was verified that all of the alternative treatments were efficient in the control of diseases of the tomato. The biodynamic system presented a smaller severity of diseases than the organic. As to the productivity there was no difference between the systems. Parameters of quality of the tomato fruits have been evaluated, such as: weight loss, texture, pH, soluble solids, titratable acidity and reducing sugars. The organic and biodynamic production systems, together with the adoption of alternative treatments, and the use of resistant cultivars, allow the cultivation of tomatoes less dependent on pesticides, respecting the environment and the human health.<br>Doutor
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Flumignan, Danilo Luiz. "Caracterização da qualidade e previsão dos parâmetros físico-químicos de gasolinas comerciais brasileiras através da aplicação de métodos quimiométricos em perfis (fingerprintings) espectroscópicos de ressonância magnética nuclear /." Araraquara : [s.n.], 2010. http://hdl.handle.net/11449/105682.
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Orientador: José Eduardo de Oliveira<br>Banca: João Olimpio Tognolli<br>Banca: Marcos Roberto Monteiro<br>Banca: Aristeu Gomes Tininis<br>Banca: Nelson Roberto Antoniosi Filho<br>Resumo: Uma das características mais interessantes da instrumentação analítica moderna é o número de variáveis que podem ser medidas simultâneamente em uma única amostra. Dentre as técnicas analíticas, a RMN 1 H e 13 C, destaca se como uma das mais importantes na análise de "fingerprintings" de misturas complexas. Por outro lado, problemas na qualidade de combustíveis comercializados, têm sido constantemente relatados, tornando relevante o desenvolvimento de novos métodos de análise alternativos que complementem os aplicados atualmente. No Brasil a qualidade da gasolina comercial é regulamentada pela Resolução ANP nº 309. A seleção das amostras mensais de gasolinas comerciais representativas com diferentes similaridades foi realizada por HCA, após a determinação de diversos parâmetros físico químicos estabelecidos pela Resolução ANP nº. 309, em 400 amostras coletadas durante abril a setembro de 2005 em postos revendedores da região Centro Oeste de São Paulo. A partir da amostra mais complexa, determinada por CG MS, foram otimizadas as condições de RMN 1 H (volume de amostra: 30 ^L, volume de solvente: 600 ^L e tempo de análise: 2 min), e RMN 13 C (volume de amostra: 200 ^L, volume de solvente: 600 ^L e tempo de análise: 10 min), que apresentaram razão sinal/ruído e tempo de análise adequados, contribuindo para a construção do banco de dados dos perfis espectrais. O banco de dados foi constituído das intensidades espectrais de cada perfil para cada deslocamento químico, bem como dos parâmetros físico químicos estabelecidos pela Resolução ANP nº. 309 e de suas respectivas características de qualidade. O algoritmo SIMCA RMN 1 H e SIMCA RMN 13 C mostrou que os perfis espectrais podem ser correlacionados de forma satisfatória e confiável com a qualidade das gasolinas comerciais brasileiras (sensibilidade superior a 90%)... (Resumo completo, clicar acesso eletrônico abaixo)<br>Abstract: The most interesting features of modern instruments is the number of variables that can be measured in a single sample. The analytical techniques, one dimensional 1 H and 13 C NMR, stand out as the most important to fingerprintings analysis of complex mixtures. On the other hand, problems in Brazilian commercial fuel quality, including adulteration episodes, have been consistently reported, making relevant the development of news alternatives analytical methods in laboratories and governmental agencies. In Brazil, the gasoline quality control is regulated by ANP Resolution nº. 309. The samples selection of representative commercial gasoline was performed by HCA, after the determination of several physicochemical parameters, established by ANP Resolution nº. 309, in 400 gasoline samples collected during April to September 2005, in gas stations of the midwest region of Sao Paulo State. The most complex sample, determined by GC MS, promoted the optimization of 1 H NMR conditions (sample volume: 30 mL, solvent volume: 600 mL and analysis time: 2 min) and 13 C NMR conditions (volume Sample: 200 mL, solvent volume: 600 mL and analysis time: 10 min), whose showed adequated signal to noise ratio and time analysis, contributing for the construction of the spectral profile database. Database was composed by the intensities and chemical shift in the spectral profile, as well as by the physicochemical parameters and its respective quality characteristics. SIMCA 1 H NMR and SIMCA 13 C NMR showed satisfactory and confidential correlation between the spectral profiles and the quality of the Brazilian commercial gasoline (sensibility above 90%). Similarly, PLS 1 H NMR and PLS 13 C NMR provided satisfactory correlations in the prediction of several physicochemical parameters, in other words, showed standards erros results RMSEC, RMSEV and RMSEP with proportional intensities... (Complete abstract click electronic access below)<br>Doutor
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Migliato, Ketylin Fernanda. "Syzygium cumini (L) Skeels-jambolão : estudo farmacognóstico, otimização do processo extrativo, determinação da atividade antimicrobiana do extrato e avaliação da atividade anti-séptica de um sabonete líquido contendo o referido extrato /." Araraquara : [s.n.], 2005. http://hdl.handle.net/11449/88601.
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Resumo: Considerando-se a qualidade dos fitoterápicos, é importante salientar que a preocupação com esta questão inclui rigoroso acompanhamento das diferentes etapas do desenvolvimento e produção destes produtos, desde a coleta do vegetal até a disponibilidade do produto final. Neste trabalho foi realizado o estudo farmacognóstico do fruto de Syzygium cumini (L.) Skeels, popularmente conhecido como jambolão, no qual foram destacadas a otimização do processo extrativo, a determinação da atividade antimicrobiana do extrato bruto e a avaliação desta atividade após sua incorporação em um sabonete líquido. Análise fitoquímica preliminar dos frutos de S. cumini (L.) Skeels evidenciou taninos, flavonóides, antocianidinas, iridóides, alcalóides e heterosídeos fenólicos simples. Tendo como parâmetros o resíduo seco e a atividade antimicrobiana, os extratos foram testados frente aos microrganismos Staphylococcus aureus, Staphylococcus epidermidis, Pseudomonas aeruginosa, Enterococcus faecalis, Escherichia coli, Candida albicans e Candida krusei. Por meio da análise fatorial dos resultados do planejamento experimental, onde foi empregada granulometria de 0,302 mm do pó seco do fruto, constatou-se que a percolação constitui o melhor procedimento extrativo, e a mistura etanol: água (50:50) constitui o melhor solvente. Para a determinação da concentração inibitória mínima (CIM) do extrato foram usados os microrganismos S. aureus, S. epidermidis, P. aeruginosa, C. albicans, C. krusei e C. parapsilosis, partindo de uma concentração inicial de 10000 ìg/100 ìL. A concentração bactericida mínima (CBM) foi de 1250 ìg/100 ìL para a S. aureus, 625 ìg/100 ìL para a S. epidermidis e 2500 ìg/100 ìL para a P. aeruginosa e para a concentração fungicida mínima (CFM) foi de 2500 ìg/100 ìL. A incorporação do extrato de S. cumini... (Resumo completo, clicar acesso eletrônico abaixo).<br>Abastract: The quality of the phytomedicines must be assured by means of close observation of the different stages of their development and production, which starts at the moment the plant is collected and finishes at the moment the product is put on the market. A pharmacognostic study of Syzygium cumini (L.) Skeelsfruits (popularly known as jambolão) was then performed, pointing out the optimization of the extractive process, the determination of the antimicrobial activity of the crude extract, and the assessment of such activity after its incorporation into the liquid soap. The phytochemical screening from the fruits of S. cumini (L.) Skeels demonstrated tannins, flavonoids, anthocyanins, iridoids, alkaloids and simple phenol heterosides. By using dry residue content and antimicrobial activity assessment methodologies, a fatorial analysis was accomplished, and considering a dry fruit powder granulometry of 0.302 mm, the results indicated percolation as the best extraction method, and the mixture ethanol: water (50:50) as the best solvent concentration. The microorganisms S. aureus, S. epidermidis, P. aeruginosa, C. albicans, C. krusei and C. parapsilosis were used to determine the minimal inhibitory concentration (MIC) of the extract, starting from 10000 æg/100 æL. The minimal bactericidal concentration (MBC) to S. aureus, S. epidermidis and P. aeruginosa were 1250 æg/100 æL, 625 æg/100 æL and 2500 æg/100 æL respectively. And a minimal fungicidal concentration (MFC) of 2500 æg/100 æL. The liquid soap was then formulated, and had S. cumini (L.) Skeels extract added to its formulation leading, therefore, to an antiseptic activity that proved to be favorable considering the good results obtained. In the presence of S. aureus, S. epidermidis and P. aeruginosa at concentrations of 625 æg/100 æL, 312.5 æg/100 æL, and 1250 æg/100 æL, respectively... (Complete abstract, click electronic address below).<br>Orientador: Hérida Regina Nunes Salgado<br>Coorientador: Marcos Antonio Corrêa<br>Banca: Vera Lucia Borges Isaac Rangel<br>Banca: Telma Mary Kaneko<br>Mestre
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Mantelatto, Maria Augusta Motta. "Utilização do controle estatístico de processo na unidade de produção e desenvolvimento de derivados de soja - UNISOJA - F.C.F. - UNESP /." Araraquara : [s.n.], 2008. http://hdl.handle.net/11449/89567.
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Resumo: O objetivo deste trabalho foi avaliar as características químicas das amostras recolhidas nas etapas do processamento do "leite" de soja e utilizar o Controle Estatístico de Processo - CEP (gráficos de média e desvio-padrão) para determinar os limites de variabilidade para controle de processo da produção do mesmo. Os materiais utilizados foram: soja em grão descascado cozido, água de cozimento do grão da soja descascada, calda para preparo do "leite" de soja, resíduo da soja (okara) e "leite" de soja pasteurizada processado pela Unidade de Produção e Desenvolvimento de Derivados da Soja - UNISOJA. Foram analisadas 329 amostras, coletadas em 15 dias, em pontos da linha de processamento de "leite" de soja. Destas 329 amostras, 75 amostras foram retiradas do grão de soja cozido descascado para análise de proteína e umidade; 75 da água de cozimento do grão descascado para análise de proteína; 29 de calda para análise de sólidos solúveis; 75 de resíduo (okara) para análise de proteína, lipídeos e cinzas e, finalmente, 75 amostras de "leite" de soja pasteurizado para análise de cinza, cor, lipídeos, proteína e sólidos solúveis. Essas análises foram feitas em duplicatas. Esse estudo mostrou que os gráficos da ferramenta da qualidade "Controle Estatístico de Processo" são eficientes para detectar possíveis falhas durante as diferentes etapas do processamento do "leite" de soja. Entretanto, ainda há necessidade de treinamento dos funcionários e padronização no processo de fabricação do "leite", em todas as etapas. Além disso, foi possível construir, para as etapas críticas do processamento, os limites de processo em gráficos de desvio padrão e média para a produção de "leite" de soja.<br>Abstract: The purpose of this study was to evaluate the chemical characteristics of the samples collected from soybeans "milk" processing stages as well as using statistical process control (mean and standard deviation graphs) to determine the variability limits to control its production process. The used materials were: decorticated cooked soybeans water in grain, cooking the grain of peeled soybean, syrup preparation for soybeans "milk", the soybean residue (okara) and pasteurized soybean "milk" processed by the Unidade de Produção e Desenvolvimento de Derivados da Soja - UNISOJA. Three hundred and twenty nine (329) samples were analyzed, collected in 15 days from several points of the soybeans milk processing line. Among these 329 samples, 75 samples were taken from cooked grain strip for protein analysis and moisture; other 75 samples were taken from the cooking water of grain strip for protein analysis; 29 samples were taken from syrup for analysis of soluble solids; 75 samples were taken from residue (okara) for protein, lipids and ash analysis; and, finally, 75 samples were taken from soybean pasteurized "milk" for gray, color, lipids, protein and soluble solids analysis. All these analyses were performed in duplicate. The study showed that the graphics of the Statistical Process Control are efficient to detect possible failures during different stages of soy "milk" processing but there is still a need for training of officials and for standardization in the "milk" production process at the different stages. Moreover, it was possible to build the limits of the process in graphics of standard deviation and means for the critical processing stages in the soybeans "milk" production.<br>Orientador: José Paschoal Batistuti<br>Coorientador: Elizeu Antonio Rossi<br>Banca: José Paschoal Batistuti<br>Banca: Elizeu Antonio Rossi<br>Banca: João Bosco Faria<br>Banca: Alice Yoshiko Tanaka<br>Mestre
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Fiorentino, Flávia Angélica Másquio. "Desenvolvimento e controle de qualidade de formulação cosmética contendo digluconato de clorexidina /." Araraquara : [s.n.], 2009. http://hdl.handle.net/11449/91688.
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Resumo: Os sabonetes são preparações destinadas à higiene e conhecidos há mais de 4000 anos. São constituídos por sais de ácidos graxos com propriedades detergentes, resultantes da saponificação entre ácidos graxos superiores e seus glicerídeos à custa de um material alcalino. Podem ser incorporados com diversas substâncias que possuem algum efeito terapêutico ou preventivo sobre a pele, por facilitarem o contato de tais substâncias com o tecido alvo. Porém, isto nem sempre é possível. Por tratar-se de um tensoativo aniônico carboxilado e ter elevada alcalinidade, muitos dos materiais ou ativos a serem incorporados a este tipo de preparação podem apresentar instabilidade. Com o advento dos detergentes sintéticos tal situação pode ser contornada, e apesar de constituírem-se também em tensoativos aniônicos, e por terem origem em ácidos fortes, permitem o preparo de sabonetes líquidos não alcalinos e apresentam maior compatibilidade frente a diversos ativos. Entre as diversas possibilidades de ativos, os agentes antimicrobianos, merecem atenção especial, uma vez que encontra nos sabonetes um excelente veículo para desempenhar sua função na assepsia da pele. A clorexidina é um anti-séptico de amplo espectro de ação, sendo ativo frente a bactérias Gram-positivas e Gram-negativas, fungos, leveduras e vírus. Atua sobre a membrana celular causando perda de material intracelular, tais como ácido nucléico e potássio, inibição respiratória e coagulação citoplasmática. Pode apresentar-se na forma de diversos sais como acetato, cloridrato, gluconato e digluconato. Neste trabalho foram estudadas formulações contendo solução de digluconato de clorexidina. A solução amostra utilizada para preparação dos sabonetes foi avaliada quanto a alguns parâmetros como pH, densidade relativa, ponto de fusão, cromatografia em camada delgada, espectroscopia... (Resumo completo, clicar acesso eletrônico abaixo)<br>Abstract: The soaps are preparation for hygiene and they are well known for 4000 years ago. They are constituited by salts of fatty acids with detergent properties, resulting from saponification of fatty acids superiorities and glycerides using an alkaline material. They may be incorporated with several substances that have a preventive or therapeutic effect on the skin, by facilitating the contact of such substances with the target tissue. However, this is not always possible. The soaps are anionic surfactant and carboxylic and they have high alkalinity, many of the materials or activities to be incorporated into this type of preparation may be instable. With the advent of synthetic detergents such situation can be avoided, and despite of they be also anionic surfactants, and are based on strong acids, allow the preparation of liquid soaps and alkali not have greater compatibility front of several assets. Among the various possibilities of active, antimicrobial agents deserve special attention, since the soap is an excellent vehicle to perform its function in the asepsis of the skin. The chlorhexidine is an antiseptic of wide spectrum of action, being active against the bacteria Gram-positive and Gram-negative, fungi, yeasts and viruses. Chlorhexidine is an excellent antiseptic of wide spectrum of action, being active against the bacteria Gram-positive and Gram-negative, fungi, yeasts and viruses. Acts on the cell membrane causing loss of intracellular material, such as nucleic acid and potassium, respiration inhibition and cytoplasmic coagulation. The salts of chlorhexidine can be acetate, hydrochloride, gluconate and digluconate. In this work formulation were studied with solution of chlorhexidine digluconate. The sample solution employed to prepare the liquid soaps was evaluated for some parameters such as pH, relative density, melting point, thin-layer chromatography... (Complete abstract click electronic access below)<br>Orientador: Hérida Regina Nunes Salgado<br>Coorientador: Marcos Antonio Corrêa<br>Banca: Maria José Vieira Fonseca<br>Banca: Maria Stella Gonçalves Raddi<br>Mestre
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Costa, Carla Cristina Machado Riani. "Influência das alterações físicas e químicas sobre a função plaquetária e a expressão da GPIIbIIa em concentrados de plaquetas caninos estocados /." Botucatu : [s.n.], 2011. http://hdl.handle.net/11449/95992.
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Orientador: Regina Kiomi Takahira<br>Banca: Raimundo Souza Lopes<br>Banca: Patrícia Mendes Pereira<br>Resumo: O concentrado de plaquetas é um hemocomponente importante para a transfusão de grandes quantidades de plaquetas. Durante a estocagem, as plaquetas sofrem lesões que devem ser analisadas por meio de testes laboratoriais. O objetivo do presente estudo foi avaliar as qualidades físicas, químicas, microbiológicas, estruturais e funcionais plaquetárias em concentrados de plaquetas caninos estocados durante 5 e 7 dias. Foram realizadas contagem de plaquetas, leucócitos e hemácias por unidade, mensuração do pH, glicose, avaliação do swirling, análise microbiológica, avaliação da agregação plaquetária e da expressão da GPIIbIIIa pela citometria de fluxo. As análises foram realizadas logo após a centrifugação, e no quinto (grupo I) e sétimo (grupo II) dias de estocagem dos concentrados de plaquetas obtidos de 22 cães hígidos. Todas as bolsas foram negativas para o isolamento de microorganismos. Houve diminuição significativa nas contagens de plaquetas e leucócitos, pH, glicose e swirling nos dois grupos. Ocorreu diminuição na resposta agregatória nos dois grupos, com o uso isolado e associado de ADP e epinefrina. Os anticorpos CD41 e CD61 apresentaram alta porcentagem de fluorescência em todos os momentos, e não houve variação significativa na média de intensidade de fluorescência das plaquetas durante a estocagem. Conclui-se que, mantida a esterilidade microbiológica, os concentrados de plaquetas caninas podem ser estocados por até 7 dias, no entanto, há uma maior perda da viabilidade plaquetária e qualidade dos concentrados quando comparados ao grupo armazenado durante 5 dias. Houve perda funcional das plaquetas durante a estocagem pela redução da agregação plaquetária. Os anticorpos CD41 e CD61 podem ser utilizados na avaliação da GPIIbIIIa de plaquetas caninas estocadas durante os períodos avaliados<br>Abstract: Platelet concentrate is an important blood component for platelet transfusion. During storage, platelets undergo lesions that should be evaluated by laboratory assays. The aim of this study was to evaluate the physical, chemical, microbiological, structural and functional platelet qualities in canine platelet concentrate stored for 5 and 7 days. Platelet, leukocytes and erythrocytes concentrations per unit, pH and glucose measurements, swirling observation, microbiological analysis, assessment of platelet agregation and expression of GPIIbIIIa by flow cytometry were performed. Analyses were performed after centrifugation, and the fifth (group I) and seventh (group II) days of platelet concentrate storage obtained from 22 healthy dogs. All platelet concentrate bags were negative for microorganisms isolation. Platelet and leukocytes concentrations, pH, glucose, and swirling decreased significantly during storage, in both groups. A significant reduction in aggregatory response was detected in both groups, in the presence of ADP, epinephrine or both simultaneously. CD41 and CD61 antibodies showed high fluorescence at all times, and no significant variation in mean fluorescence intensity during storage. In conclusion, canine platelet concentrates should be stored for 5 days, however, can be stored for up to 7 days with greater loss of viability and quality of bags during this period. There was functional loss observed by the reduction of platelet aggregation during storage in both groups. CD41 and CD61 antibodies can be used to assess GPIIbIIIa in canine platelets stored during the evaluated period<br>Mestre
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Hellmeister, Carmen Francisca Lourenço Pinto 1958. "Boas práticas de fabricação (BPF) aplicadas nas etapas de beneficiamento de um packing house de laranjas : estudo de caso /." Botucatu : [s.n.], 2012. http://hdl.handle.net/11449/101784.
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Orientador: Rogério Lopes Vieites<br>Banca: Adilson Renofio<br>Banca: Maria do Carmo Jampaulo P. Palhaci<br>Banca: Regina Marta Evangelista<br>Banca: Daniele Maria Bruno Falcone<br>Resumo: O objetivo deste trabalho é apresentar um estudo de caso feito em um packing house de laranja na cidade de Araraquara, estado de São Paulo, com propostas de melhorias nas etapas de beneficiamento do processo, tornando-as mais seguras e economicamente viáveis; aplicando os conceitos de BPF (Boas Práticas de Fabricação) nas etapas de beneficiamento da laranja no packing house, com ganho de qualidade e atendimento das expectativas do consumidor. É sugerida a confecção de uma cartilha de BPF no processamento da laranja pêra em packing house. Além do estudo das etapas de manuseio e beneficiamento da laranja pós-colheita, é apresentada também uma proposta para segmentação dos custos da empresa, através de uma análise das informações contábeis do ano de 2011 e da adoção de uma metodologia de custeio apropriada ao tipo de atividade da empresa, com o objetivo de criar uma ferramenta simplificada para tomada de decisão; uma planilha dará suporte à equipe de vendas com o tipo de embalagem que é mais rentável e com o melhor preço final de venda da fruta<br>Abstract: The fruit production is considered one of the most dynamic activity of the Brazilian economy, with continuous development. Hence the need to evaluate the Good Manufacturing Practices (GMP), in steps of processing of an orange packing house, specifically the species Pêra. A case study was done on a orange packing house in the city of Araraquara, Estate of São Paulo, with the aim of presenting proposals for improvements in the processing steps of the process, making them safer and economically viable. Concluding that it is possible to apply the concepts of GMP in the stages of processing oranges in packing houses, with a gain of quality and service expectations of the consumer. It is proposed including the making of a primer application of GMP in the processing of orange pear in packing houses. Besides the study of orange's post-harvest handling and processing, it is also presented a proposal for segmenting the company's costs, through the analysis of accounting information from year 2011 and through the adoption of a costing methodology appropriated to the company's business, with the aim of creating a simplified tool for decision making, an spreadsheet, which will support the sales team regarding what is the most profitable package, and even what is the best sales price for the fruit<br>Doutor
Books on the topic "Quality control. eng"
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Bai, Haowei. Achieving end-to-end QoS in the next generation Internet: Integrated services over differentiated service networks. National Aeronautics and Space Administration, Glenn Research Center, 2001.
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Springate, John Raymond Charles. Egg quality and fecundity in rainbow trout: the determining factors and mechanisms of control. University of Aston in Birmingham. Department of Biological Sciences, 1985.
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Elmore, William E. Qualifying items of work for end-result specifications. Center for Transportation Research, Bureau of Engineering Research, University of Texas at Austin, 1997.
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International Conference on Power Quality (2nd 1992 Atlanta). Proceedings: Second International Conference on Power Quality : end-use applications and perspectives-PQA'92. The Institute, 1994.
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Patty, Robert M. Lean operations for front-end-loading, engineering, procurement, and construction: Lead innovation, shorten cycle time, eliminate error, improve quality, reduce costs. Universal Publishers, 2010.
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IEEE/IFIP, Workshop on End-to-End Monitoring Techniques and Services (5th 2007 Munich Germany). Fifth IEEE/IFIP Workshop on End-to-End Monitoring Techniques and Services: E2EMON'07 : May 21, 2007, Munich, Germany. IEEE, 2007.
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La qualite en e ducation: Pour re fle chir a la formation de demain. Presses de l'Universite du Que bec, 2007.
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Gorman, James M., and Hershell R. Ball. "Quality Control and Product Specifications." In Egg Science and Technology. Macmillan Education UK, 1986. http://dx.doi.org/10.1007/978-1-349-09142-3_15.
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Wei, Wang. "Quality Control of Sub-suppliers in EDG." In Proceedings of The 20th Pacific Basin Nuclear Conference. Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-2317-0_37.
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van Lenteren, Joop C., and Franz Bigler. "Quality Control of Mass Reared Egg Parasitoids." In Egg Parasitoids in Agroecosystems with Emphasis on Trichogramma. Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-1-4020-9110-0_12.
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Haberl, R., and P. Steinbigler. "Quality Control and Standardization: High Resolution ECG." In Advances in Noninvasive Electrocardiographic Monitoring Techniques. Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-011-4090-4_29.
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Juričić, Ðani, Janko Petrovčič, Uroš Benko, et al. "End-Quality Control in the Manufacturing of Electrical Motors." In Case Studies in Control. Springer London, 2013. http://dx.doi.org/10.1007/978-1-4471-5176-0_8.
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Alfredo Grieco, Luigi, and Saverio Mascolo. "End-to-End Bandwidth Estimation for Congestion Control in Packet Networks." In Quality of Service in Multiservice IP Networks. Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/3-540-36480-3_47.
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Sisalem, Dorgham. "End-To-End Quality of Service Control Using Adaptive Applications." In Building QoS into Distributed Systems. Springer US, 1997. http://dx.doi.org/10.1007/978-0-387-35170-4_43.
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Wei, Jianbin, and Cheng-Zhong Xu. "A Self-tuning Fuzzy Control Approach for End-to-End QoS Guarantees in Web Servers." In Quality of Service – IWQoS 2005. Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/11499169_11.
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Bianchi, Giuseppe, Flaminio Borgonovo, Antonio Capone, Luigi Fratta, and Chiara Petrioli. "PCP: An End-to-End Measurement-Based Call Admission Control for Real-Time Services over IP Networks." In Quality of Service in Multiservice IP Networks. Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/3-540-44554-4_26.
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Abreu, Carlos, and P. M. Mendes. "End-to-End Quality of Service-Based Admission Control via Virtual Sensor Nodes." In IFMBE Proceedings. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-03005-0_8.
Full textConference papers on the topic "Quality control. eng"
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Cloutier, Aimee, and James Yang. "Control of Hand Prostheses: A Literature Review." In ASME 2013 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/detc2013-13349.
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In recent years, there has been a steep rise in the quality of prostheses for patients with upper limb amputations. One common control method, using electromyographic (EMG) signals generated by muscle contractions, has allowed for an increase in the degrees of freedom (DOFs) of hand designs and a larger number of available grip patterns with little added complexity for the wearer. However, it provides little sensory feedback and requires non-natural control which must be learned by the user. Another recent improvement in prosthetic hand design instead employs electroneurographic (ENG) signals, requiring an interface directly with the peripheral nervous system (PNS) or the central nervous system (CNS) to control a prosthetic hand. While ENG methods are more invasive than using surface EMG for control, an interface with the PNS has the potential to provide more natural control and creates an avenue for both efferent and afferent sensory feedback. Despite the recent progress in design and control strategies, however, prosthetic hands are still far more limited than the actual human hand. This review outlines the recent progress in the development of EMG and ENG controlled prosthetic hands, discussing advancements in the areas of sensory feedback and control. The potential benefits and limitations of both control strategies, in terms of signal classification, invasiveness, and sensory feedback, are examined. A brief overview of interfaces with the CNS is provided, and potential future developments for these control methods are discussed.
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Varga, Andrew J. "The End of Quality Control." In SAE 2001 World Congress. SAE International, 2001. http://dx.doi.org/10.4271/2001-01-0378.
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Yingxin Jiang and Aaron D. Striegel. "End-wise admission control delegation for effective end-to-end quality of service." In 2009 IEEE 17th International Workshop on Quality of Service (IWQoS). IEEE, 2009. http://dx.doi.org/10.1109/iwqos.2009.5201418.
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Rosberg, Zvi. "Control Plane for End-to-End QoS Guarantee: A Theory and Its Application." In 2008 16th International Workshop on Quality of Service. IEEE, 2008. http://dx.doi.org/10.1109/iwqos.2008.36.
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Mitchell, P. "Improved quality of service in future satellite systems through effective medium access control." In IEE Seminar on End-to-End Challenges of Broadband Via Satellite. IEE, 2005. http://dx.doi.org/10.1049/ic:20050029.
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Zambal, Sebastian, Christoph Heindl, Christian Eitzinger, and Josef Scharinger. "End-to-end defect detection in automated fiber placement based on artificially generated data." In Fifteenth International Conference on Quality Control by Artificial Vision, edited by Christophe Cudel, Stéphane Bazeille, and Nicolas Verrier. SPIE, 2019. http://dx.doi.org/10.1117/12.2521739.
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Wang, Xiaodong, Xiaorui Wang, Guoliang Xing, and Yanjun Yao. "Dynamic duty cycle control for end-to-end delay guarantees in wireless sensor networks." In 2010 IEEE 18th International Workshop on Quality of Service (IWQoS). IEEE, 2010. http://dx.doi.org/10.1109/iwqos.2010.5542743.
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Qiao, Xiaoyan, Yuan Zhao, and Honglei Wu. "Optional Quality Control of ECG Data Compression Algorithm." In 2011 5th International Conference on Bioinformatics and Biomedical Engineering (iCBBE). IEEE, 2011. http://dx.doi.org/10.1109/icbbe.2011.5780476.
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Souza, Vitor Barbosa, Alejandro Gomez, Xavi Masip-Bruin, Eva Marin-Tordera, and Jordi Garcia. "Towards a Fog-to-Cloud control topology for QoS-aware end-to-end communication." In 2017 IEEE/ACM 25th International Symposium on Quality of Service (IWQoS). IEEE, 2017. http://dx.doi.org/10.1109/iwqos.2017.7969140.
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Hourai, Takuya, Kaori Maeda, Yasuhiro Ohishi, Hayato Morihiro, and Tomoki Harase. "Vertical Handover Control Considering End-to-End Communication Quality in IP Mobility." In 2012 IEEE/IPSJ 12th International Symposium on Applications and the Internet (SAINT). IEEE, 2012. http://dx.doi.org/10.1109/saint.2012.60.
Full textReports on the topic "Quality control. eng"
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Lee, Jusang, John E. Haddock, Dario D. Batioja Alvarez, and Reyhaneh Rahbar Rastegar. Quality Control and Quality Assurance of Asphalt Mixtures Using Laboratory Rutting and Cracking Tests. Purdue University, 2019. http://dx.doi.org/10.5703/1288284317087.
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The main objectives of this project were to review the available balanced-mix design (BMD) methodologies, understand the I-FIT and Hamburg Wheel Tracking Test (HWTT) test methods using INDOT asphalt mixtures, and to explore the application of these tests to both a BMD approach and as performance-related Quality Control (QC) and Quality Acceptance (QA) methods. Two QA mixture specimen types, plant-mixed laboratory-compacted (PMLC) and plant-mixed field-compacted (PMFC) were used in the determination of cracking and rutting parameters. Distribution functions for the flexibility index (FI) values and rutting parameters were determined for various mixture types. The effects of specimen geometry and air voids contents on the calculated Flexibility Index (FI) and rutting parameters were investigated. The fatigue characteristics of selected asphalt mixtures were determined using the S-VECD test according to different FI levels for different conditions. A typical full-depth pavement section was implemented in FlexPAVE to explore the cracking characteristics of INDOT asphalt mixtures by investigating the relationship between the FI values of QA samples with the FlexPAVE pavement performance predictions. The FI values obtained from PMFC specimens were consistently higher than their corresponding PMLC specimens. This study also found that FI values were affected significantly by variations in specimen thickness and air voids contents, having higher FI values with higher air voids contents and thinner specimens. These observations do not agree with the general material-performance expectations that better cracking resistance is achieved with lower air voids content and thicker layers. Additionally, PG 70-22 mixtures show the lowest mean FI values followed by the PG 76-22 and 64-22 mixtures. The same order was observed from the ΔTc (asphalt binder cracking index) of INDOT’s 2017 and 2018 projects. Finally, it was found that the HWTT showed reasonable sensitivity to the different characteristics (e.g., aggregate sizes, binder types, and air voids contents) of asphalt mixtures. Mixtures containing modified asphalt binders showed better rut resistance and higher Rutting Resistance Index (RRI) than those containing unmodified binders.
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Kyllönen, Katriina, Karri Saarnio, Ulla Makkonen, and Heidi Hellén. Verification of the validity of air quality measurements related to the Directive 2004/107/EC in 2019-2020 (DIRME2019). Finnish Meteorological Institute, 2020. http://dx.doi.org/10.35614/isbn.9789523361256.
Full textAbstract:
This project summarizes the results from 2000–2020and evaluates the trueness andthequality control (QC) procedures of the ongoing polycyclic aromatic hydrocarbon (PAH)and trace element measurements in Finlandrelating to Air Quality (AQ) Directive 2004/107/EC. The evaluation was focused on benzo(a)pyrene and other PAH compounds as well as arsenic, cadmium and nickel in PM10and deposition. Additionally, it included lead and other metals in PM10and deposition, gaseous mercury and mercury deposition, andbriefly other specificAQ measurements such as volatile organic compounds (VOC)and PM2.5chemical composition. This project was conducted by the National Reference Laboratory on air quality and thiswas the first time these measurements were assessed. A major part of the project was field and laboratory audits of the ongoing PAH and metal measurements. Other measurements were briefly evaluated through interviews and available literature. In addition, the national AQ database, the expertise of local measurement networks and related publications were utilised. In total, all theseven measurement networks performing PAH and metal measurements in 2019–2020took part in the audits. Eleven stations were audited while these measurements are performed at 22 AQ stations in Finland. For the large networks, one station was chosen to represent the performance of the network. The audits included also six laboratories performing the analysis of the collected samples. The audits revealed the compliance of the measurements with the AQ Decree 113/2017, Directive 2004/107/EC and Standards of the European Committee for Standardization(CEN). In addition, general information of the measurements, instruments and quality control procedures were gained. The results of the laboratory audits were confidential,but this report includes general findings, and the measurement networks were informed on the audit results with the permission of the participating laboratories. As a conclusion, the measurementmethodsusedwere mainly reference methods. Currently, all sampling methods were reference methods; however, before 2018 three networks used other methods that may have underestimated concentrations. Regarding these measurements, it should be noted the results are notcomparable with the reference method. Laboratory methods were reference methods excluding two cases, where the first was considered an acceptable equivalent method. For the other, a change to a reference method was strongly recommended and this realized in 2020. For some new measurements, the ongoing QC procedures were not yet fully established, and advice were given. Some networks used consultant for calibration and maintenance, and thus theywere not fully aware of the QC procedures. EN Standards were mostly followed. Main concerns were related to the checks of flow and calculation of measurement uncertainty, and suggestions for improvement were given. When the measurement networks implement the recommendations given inthe audits, it can be concluded that the EN Standards are adequately followed in the networks. In the ongoing sampling, clear factors risking the trueness of the result were not found. This applies also for the laboratory analyses in 2020. One network had concentrations above the target value, and theindicative measurementsshould be updated to fixed measurements.
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Beuermann, Diether, Nicolas L. Bottan, Bridget Hoffmann, Jeetendra Khadan, and Diego A. Vera-Cossio. Suriname COVID-19 Survey. Inter-American Development Bank, 2021. http://dx.doi.org/10.18235/0003266.
Full textAbstract:
This dataset constitutes a panel follow-up to the 2016/2017 Suriname Survey of Living Conditions. It measures welfare related variables before and after the onset of the COVID-19 pandemic including labor market outcomes, financial literacy, and food security. The survey was executed in August 2020. The Suriname COVID-19 Survey is a project of the Inter-American Development Bank (IDB). It collected data on critical socioeconomic topics in the context of the COVID-19 pandemic to support policymaking and help mitigate the crisis impacts on the populations welfare. The survey recontacted households interviewed in 2016/2017 by the Suriname Survey of Living Conditions (SSLC) and was conducted by phone due to the mobility restrictions and social distancing measures in place. It interviewed 1,016 households during August 2020 and gathered information about disease transmission, household finances, labor, income, remittances, spending, and social protection programs. Data and documentation of the 2016/2017 Suriname Survey of Living Conditions can be found at: https://publications.iadb.org/en/suriname-survey-living-conditions-2016-2017 The survey was designed and implemented by Sistemas Integrales. This publication describes the main methodological aspects, such as sample design, estimation procedures, topics covered by the questionnaire, field organization and quality control. It also presents the structure and codebook for the two resulting publicly available datasets.