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Phase equilibrium and miscibility of silk fibroin and sodium alginate polymeric blends
Get PDFOrientadores: Marisa Masumi Beppu, Mariana Agostini de MoraesTese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia QuímicaResumo: Por conta do aumento constante da demanda de combustíveis fósseis, a indústria brasileira de petróleo vem, durante os últimos anos, buscando alternativas de aperfeiçoar os processos já existentes. Pesquisadores de todo o mundo vêm estudando fatores, que vão desde a qualidade do óleo a ser refinado até o destino do resíduo orgânico pesado, para assegurar a qualidade oferecida e, ao mesmo tempo, diminuir ao máximo o impacto ambiental gerado. Um dos problemas encontrados é a eventual mistura (blends) de variados tipos de petróleos diferentes nos tanques de carga das refinarias, o que altera a composição e as propriedades antes mesmo de se iniciar o refino, cujas condições operacionais dependem destas propriedades. O preço e qualidade do petróleo estão diretamente ligados com sua densidade relativa, propriedades e porcentagem de cada uma das espécies orgânicas que o compõem. Por este motivo, este trabalho tem como objetivo desenvolver um procedimento confiável e aplicável à indústria de forma a confirmar as propriedades destes blends. Utilizando equipamentos de destilação atmosférica e a vácuo, baseados nas normas ASTM D2892 e ASTM D5236, respectivamente, além de um cromatógrafo gasoso para destilação simulada (SimDis-HT), será possível obter curvas de ponto de ebulição verdadeiro, densidade, valores de °API e outras propriedades de diesel, querosene e seus blendsAbstract: Considering the increase on demand of fossil fuels for the oil industry in the last years, the search for new methods to upgrade the current process is essential. All around the world, researchers have studied topics from the quality of oils before the refinery up to how to properly dispose the heavy residue created during the distillation process. In this way, it is possible to maximize the oil¿s worth and reduce the environmental problems that could be caused. One problem currently found in oil refineries is the unavoidable mixture (or blends) of several different brands of oil during the storage process on tanks, varying their composition and properties, which can alter the accuracy of the operational inputs that control the refining process. Additionally, the price of oil is directly related to its properties such as specific gravity and the percentage of each organic compound in its composition. Therefore, this dissertation offers a reliable methodology to determine the properties of fuels and its blends. Utilizing distillation equipment with and without reduced pressure, based on the standards ASTM D2892 and ASTM D5236, respectively, as well as a gas chromatographer that simulate distillations at high temperatures (SimDis-HT), we will be capable of obtaining true boiling point curves, density, API grade values, and other properties of diesel, kerosene and their blendsDoutoradoEngenharia QuímicaDoutora em Engenharia Quimica88887.372049/2019-00170393/2018-6CAPESCNP
Presence of serum ferritin before and after bariatric surgery: analysis in dentate and edentulous patients
No full textSociety has changed its own lifestyle, specially its eating habits and physical activities, leading to excessive weight and a sedentary behavior, which has contributed to obesity increase. Bariatric surgery is the most effective treatment to obesity, allowing weight loss and its maintenance. However, it has been related high levels of iron deficiency after surgery. A person's nutritional status might be affected by total or partial tooth loss. The aim of this longitudinal prospective cohort study was to evaluate the levels of serum ferritin before and after bariatric surgery and to identify if there is a relation with tooth loss. The sample was composed of 50 patients selected and assisted at Amaral Carvalho Hospital, located in Jau A city, Brazil. The use and necessity of prosthesis, dental absence or presence, and serum ferritin dosage were evaluated. Student's t test, Univariate analysis, Chi-square and Odds Ratio were adopted (p<0.05). There was no significant difference regarding the serum ferritin levels between dentate and edentulous patients prior to surgery (p = 0.436). After surgery, the serum ferritin levels were higher in edentulous patients (prosthesis users) when compared to the pre-surgical levels, and the post-surgical levels presented significant difference regarding the dentate patients (p = 0.024). It can be concluded that rehabilitated patients in postoperative period showed better levels of serum ferritin after surgical intervention1110CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQFUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESPsem informação2012/10994-0; 2015/05749-
Teaching quality in youth and adult education (eja) modality from the perspective of teachers
No full textEste artigo apresenta a percepção dos docentes sobre a qualidade de ensino na modalidade EJA, considerando suas condições cotidianas de trabalho. Apresenta os documentos legais e indicativos de qualidade na EJA da Rede Estadual de São Paulo e do Município de Campinas. A análise aborda a qualidade na educação de jovens e adultos baseada em sete dimensões: insumos financeiros e de infraestrutura; gestão pedagógica; prática pedagógica e processo de ensino e aprendizagem; avaliação; formação continuada; relações no espaço escolar e relações no entorno, sob a ótica dos docentes e fazendo um recorte em Campinas/SP, baseou-se na pesquisa “Diagnóstico da qualidade de ensino na Educação de Jovens e Adultos”, financiada pelo Observatório da Educação/CAPES. Esta pesquisa realizou o levantamento bibliográfico referente à qualidade de ensino, a formação dos professores, às políticas públicas de EJA no Brasil e às orientações oficiais de âmbito federal, estadual e municipal sobre a EJA41826This article presents the perception of teachers on teaching quality in Youth and Adult Education (EJA) modality considering their daily working conditions. The paper presents the legal documents and quality indicators in EJA modality in the State of Sao Paulo and Campinas. The analysis focuses on the quality of education for Youth and Adult people in financial inputs and infrastructure; educational management; pedagogical practice and teaching and learning; evaluation; continuing education; relationships within the school and relationships in the environment. The analysis of quality from the perspective of teachers and taking Campinas/SP as study case was based on the research "Diagnosis of teaching quality in Youth and Adult Education", funded by the Observatcio da Educacao/CAPES. This research conducted the literature related to quality education, to adult and youth education (EJA) public policy in Brazil and the official guidelines of federal, state and municipal levels on the EJ
Production of 'formosa' papaya seedlings in different protected environments and organic substrates
No full textIt is aimed to evaluate the effect of cattle manure, and ground crushed cassava branches based substrates in the growth of 'Formosa' papaya seedlings under different environmental conditions. Four protected environments were tested: greenhouse in arched, covered with polyethylene film with a thermo reflective screen underneath it; similar greenhouse but without the reflective screen; monofilament nursery with 50% shade screen and thermo reflective nursery with 50% shade screen. In the protected environments, seedlings were accomodated in polyethylene bags (15.0 x 25.0 cm) were filled with cattle manure, and ground cassava branches based substrates in the following proportions: 100% cassava branches; 80% cassava branches and 20% cattle manure; 60% cassava branches and 40% cattle manure; 40% cassava branches and 60% cattle manure; 20% cassava branches and 80% cattle manure and 100% cattle manure. Because there was no repetition of the culture environment, each one was considered as an experiment. The substrates with 80 and 100% cattle manure promoted better growth. The cassava branches alone is a poor substrate. The black screened and the thermo reflective proved to be the best environments321624CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQFUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESP300829/2012-423/200.647/2012Objetivou-se avaliar o efeito de substratos a base de esterco bovino e ramos de mandioca triturados no crescimento de mudas de mamão ‘formosa’ em diferentes ambientes de cultivo. Quatro ambientes protegidos foram testados: estufa agrícola em arco, coberta com filme polietileno e tela termorrefletora sob o filme; estufa agrícola idêntica a anterior nas dimensões, porém sem a tela sob o filme; telado de monofilamento de 50% de sombreamento e telado de termorrefletora de 50% de sombreamento. Nos ambientes protegidos, as mudas foram acondicionadas em sacolas de polietileno de 15,0 x 25,0cm e preenchidas com substratos a base de esterco bovino e ramos de mandioca triturados: 100% de ramos de mandioca; 80% de ramos de mandioca e 20% de esterco bovino; 60% de ramas de mandioca e 40% de esterco bovino; 40% de ramas de mandioca e 60% de esterco bovino; 20% de ramas de mandioca e 80% de esterco bovino e 100% de esterco bovino. Por não haver repetição do ambiente de cultivo, cada um foi considerado um experimento. Os substratos com 80 e 100% de esterco bovino promoveram melhor crescimento. Os ramos de mandioca pura não constituem um bom substrato. O melhor ambiente foi o de tela de monofilament
Review of in vivo bone strain studies and finite element models of the Zygomatic Complex in humans and nonhuman primates: implications for clinical research and practice
No full textThe craniofacial skeleton is often described in the clinical literature as being comprised of vertical bony pillars, which transmit forces from the toothrow to the neurocranium as axial compressive stresses, reinforced transversely by buttresses. Here, we review the literature on bony microarchitecture, in vivo bone strain, and finite-element modeling of the facial skeleton of humans and nonhuman primates to address questions regarding the structural and functional existence of facial pillars and buttresses. Available bone material properties data do not support the existence of pillars and buttresses in humans or Sapajus apella. Deformation regimes in the zygomatic complex emphasize bending and shear, therefore conceptualizing the zygomatic complex of humans or nonhuman primates as a pillar obscures its patterns of stress, strain, and deformation. Human fossil relatives and chimpanzees exhibit strain regimes corroborating the existence of a canine-frontal pillar, but the notion of a zygomatic pillar has no support. The emerging consensus on patterns of strain and deformation in finite element models (FEMs) of the human facial skeleton corroborates hypotheses in the clinical literature regarding zygomatic complex function, and provide new insights into patterns of failure of titanium and resorbable plates in experimental studies. It is suggested that the "pillar and buttress" model of human craniofacial skeleton function be replaced with FEMs that more accurately and precisely represent in vivo function, and which can serve as the basis for future research into implants used in restoration of occlusal function and fracture repair29912SI17531778National Science Foundation Physical Anthropology HOMINI
Optimal volt-VAr control operation for energy cost reduction in distribution systems considering a voltage dependent load model
No full textIn this paper, a new mixed integer linear programming formulation is proposed to optimally control the Volt-VAr control devices installed in a balanced electrical distribution system (EDS), taking into account the presence of dispatchable distributed generation (DG) units. The formulation considers a voltage dependent load model and aims to reduce the cost of the energy purchased to the substation and DG units on a daylong time period. The proposed method defines the settings for the voltage regulators, on-load tap changer, capacitors, and DG units. The presented formulation was tested in a 42-node EDS and the obtained results prove that the methodology enhances the EDS economic operation with a very low computational effortIEEE PES Transmission & Distribution Conference and Exposition-Latin America (PES T&D-LA
Control of obstructive sleep apnea with a new oral appliance with mandibular advancement : results of two retrospective studies
Get PDFOrientadores: : Fausto Bérzin, Marcelo Corrêa AlvesDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Odontologia de PiracicabaResumo: Introdução: A opção mais indicada para tratamento para a Apneia Obstrutiva do Sono (AOS) é o CPAP; contudo, a aderência ou aceitação é limitada. A terapia com aparelho oral (TAO) é frequentemente uma opção ou um tratamento complementar. O aparelho oral de avanço mandibular (AOm) modifica as vias aéreas superiores, melhorando a patência do espaço aéreo e sua construção se baseia normalmente no plano oclusal para a desoclusão. No presente estudo, usamos o DIORS®, um AOm diferente, baseado nos conceitos de Reabilitação Neuro-Oclusal, que utiliza o plano de Camper como referência de desoclusão, favorecendo o equilíbrio neuromuscular e a estabilidade funcional, com potencial impacto no prognóstico global. Objetivo: Avaliar a eficácia do AOm DIORS®, quer sob o ponto de vista clínico, quer sob o ponto de vista polissonográfico e cefalométrico. Adicionalmente, foi avaliado, também, se o uso desse AOm é tão eficaz quanto o CPAP titulado para tratar pacientes com AOS, não aderentes ao CPAP. Materiais e métodos: foram avaliados retrospectivamente pacientes com AOS tratados com AOm DIORS®. Todos os pacientes foram submetidos a exames de polissonografia de noite inteira, cefalometria e questionários de percepção de sonolência diurna e aderência, ronco, satisfação e segurança. Os critérios de sucesso da TAO foram assumidos por meio da análise dos parâmetros do Índice de Apneia e Hipopneia quando há 15 ou mais eventos respiratórios obstrutivos por hora, mesmo na ausência de sintomas associados ou distúrbios comórbidos, dos níveis de saturação da oxihemoglobina, índice de despertar e sonolência diurna. No primeiro estudo, com amostra de 20 pacientes não aderentes à terapia com CPAP, prescritos para tratamento com AOm, comparamos os grupos em três momentos: basal, com CPAP titulado e com AOm DIORS® ajustado. No segundo estudo, com a amostra de 23 pacientes, usamos a cefalometria em conjunto com a polissonografia para avaliar o efeito do AOm DIORS® sobre esses parâmetros estáticos antes e depois do tratamento. Resultados: no primeiro estudo, foi observada uma melhoria significativa dos parâmetros respiratórios com ambas as terapias, existindo um diferencial na sonolência diurna a favor do AOm DIORS®. No segundo estudo, confirmamos o impacto estrutural do AOm DIORS® na melhoria da patência das vias aéreas e dos parâmetros respiratórios além da redução do ronco e da sonolência diurna. Em ambos os trabalhos, demonstramos aderência, satisfação e segurança da terapia. Conclusão: Os resultados do presente estudo apoiam que o novo AOm DIORS® é eficaz no tratamento de pacientes tanto com ronco primário quanto com AOS leve, moderada ou graveAbstract: Introduction: The most recommended treatment option for Obstructive Sleep Apnea (OSA) is CPAP; however, adherence or acceptance is limited. Oral appliance therapy (OAT) is often an option or complementary treatment. The oral appliance with mandibular advancement (OAm) modifies the upper airway, improving air space patency and its construction is normally based on the occlusal plane for disocclusion. In the present study, we used DIORS®, a different OAm, based on the Neuro-Occlusal Rehabilitation concepts, which utilizes the Camper plane as a reference for disocclusion, favoring neuromuscular balance and functional stability, with potential impact on the overall prognosis. Objective: To evaluate the effectiveness of DIORS® OAm, either from a clinical point of view, or from a polysomnographic and cephalometric point of view. Additionally, it was also assessed whether the use of this OAm is as effective as the titled CPAP to treat patients with OSA, non- adherent to CPAP. Methods: OSA patients treated with DIORS® OAm were retrospectively evaluated. All patients underwent overnight polysomnography exams, cephalometry and questionnaires on their perception of daytime sleepiness and adherence, snoring, satisfaction and safety. The success criteria for therapy with OAm were attained through the parameter analysis of the Apnea and Hypopnea Index when there are 15 or more primarily obstructive respiratory events per hour, even in the absence of associated symptoms or comorbid disorders, oxyhemoglobin saturation levels, arousal index and daytime sleepiness. In the first study, with a sample of 20 patients, non-adherent to CPAP therapy, prescribed for treatment with OAm, we compared the groups in three moments: baseline, with titrated CPAP and with adjusted DIORS® OAm. In the second study, with a sample of 23 patients, we used cephalometry in conjunction with polysomnography to assess the effect of OAm DIORS® on these static parameters before and after treatment. Results: in the first study, a significant improvement in respiratory parameters was observed with both therapies, with a difference in daytime sleepiness in favor of DIORS® OAm. In the second study, we confirmed the structural impact of DIORS® OAm in improving airway patency and respiratory parameters in addition to reducing snoring and daytime sleepiness. Both studies demonstrated adherence, satisfaction and safety of the therapy. Conclusion: The results of the present study support that the DIORS®, a new OAm, is effective in the treatment of patients with snoring as well as with mild, moderate or severe OSAMestradoAnatomiaMestra em Biologia Buco-Denta
The effect of combining photoinitiator systems on the color and curing profile of resin-based composites
No full textTo evaluate the effect of combining camphorquinone (CQ) and diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide (TPO) on the color and curing profile of resin-based composites. Experimental composites were produced with different CQ and TPO molar concentrations: CQ-only, 3CQ:1TPO, 1CQ:1TPO, 1CQ:3TPO, and TPO-only. Polywave LED was characterized using a beam profiler. Block-shaped samples (5 mm x 5 mm x 3 mm depth) were cured in a custom-designed mold with a polywave LED positioned to compare the regions exposed to the 420-495 nm and 380-420 nm LED emittances. To map the cure profile, degree of conversion (DC) of longitudinal cross-sections from each block were evaluated by FT-NIR. Color, light-transmittance and light-absorption during curing were evaluated on specimens 1-3 mm thick. Data were analyzed using ANOVA/Tukey's test (alpha = 0.05; beta = 0.2). Though the polywave LED beam profile was non-uniform, up to a depth of 2 mm no differences in DC were found among the composites containing CQ with TPO added up to 50%, regardless of the position under the curing tip. Composites with higher TPO concentration showed a decrease in DC beginning with a depth of 1 mm, while composites with higher or similar CQ concentrations did not show decreased DC until a depth of 3 mm. Higher TPO concentration reduced initial yellowness and color change after curing; and lower CQ concentration decreased light-absorption at greater depths. The combination of CQ with TPO added up to 50% reduced the yellowness and color change of composites after curing without affecting cure efficiency up to a depth of 2 mm321012091217FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESP2013/04241-2; 2016/06019-3BEP
Thes disputes around the citizen : urban restructuring, curricular policies and the formation of young people in the city - what is the role of school geography?
No full textOrientador: Rafael StraforiniDissertação (mestrado) - Universidade Estadual de Campinas, Instituto de GeociênciasResumo: Tendo a Teoria do Discurso de Laclau e Mouffe como referencial teórico-metodológico esta pesquisa inicia-se discutindo o direito à cidade em relação às novas formas urbanas. Diante de um modelo de cidade que limita a ação do cidadão e contribui para seu desgaste ao promover a desigualdade e a sensação de ocupação de diferentes universos entre grupos sociais distintos, busquei discutir a vida cotidiana de uma grande parcela da população que não é contemplada ao se pensar e moldar a cidade, enfatizando os jovens escolares. Fazendo um paralelo entre a reestruturação do espaço urbano e o processo de reestruturação educacional ¿ principalmente no que tange as reformas curriculares das últimas décadas ¿ analisei os sentidos de cidadão fixados, considerando-o como um significante vazio, em diversas propostas curriculares contemporâneas e produzidas em diferentes escalas - os currículos dos munícipios de Campinas/SP e São Paulo/SP, do estado de São Paulo e a Base Nacional Comum Curricular, de âmbito nacional. Para isso, procurei refletir sobre a relação da escola e, principalmente, da geografia escolar na formação do jovem cidadão brasileiro, visto que a temática "cidade" e a compreensão da complexidade do espaço urbano são assuntos pertinentes a geografia escolarAbstract: Faced with a city model that limits citizen action and contributes to its wear and tear by promoting inequality and the feeling of occupation of different universes between different social groups, I sought to discuss the daily life of a large portion of the population that is not covered by to think and shape the city, with an emphasis on young students. Making a parallel between the restructuring of the urban space and the educational restructuring process - mainly with regard to the curricular reforms of the last decades - I sought to understand and analyze the fixed citizen meanings, considering it as an empty signifier, in several contemporary curricular produced at different scales - the curriculum of the cities of Campinas/SP and São Paulo/SP, the curriculum of the state of São Paulo and the Base Nacional Comum Curricular, of national scope. For this, I tried to reflect on the relationship of the school and, mainly, of school geography in the formation of the young Brazilian citizen, since the theme "city" and the understanding of the complexity of urban space are relevant issues to school geographyMestradoAnálise Ambiental e Dinâmica TerritorialMestra em Geografia88882.180285/2018-01CAPE
An immuno inspired proposal to solve the time series realization problem
No full textIn this paper, a new method to solve the time series realization problem is presented. This method is based on the statement of this problem as an optimization problem and on the development of an immuno inspired optimization algorithm dedicated to solve it. To evaluate the quality of the results obtained with the proposed method, they are compared to the results of two other known methods. The comparisons show that the proposed method presents a significantly better performance17861792IEEE Congress on Evolutionary Computation (CEC) held as part of IEEE World Congress on Computational Intelligence (IEEE WCCI)sem informaçã