Literatura científica selecionada sobre o tema "Solvant durable"
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Artigos de revistas sobre o assunto "Solvant durable"
Wu, Yunxuan, Jie Li, Yangfu Jin e Mi Zhou. "Binary solvent systems for durable self-adhesive conductive hydrogels". Journal of Polymer Engineering 40, n.º 3 (25 de fevereiro de 2020): 221–30. http://dx.doi.org/10.1515/polyeng-2019-0304.
Texto completo da fonteSreekantan, Srimala, Ang Xue Yong, Norfatehah Basiron, Fauziah Ahmad e Fatimah De’nan. "Effect of Solvent on Superhydrophobicity Behavior of Tiles Coated with Epoxy/PDMS/SS". Polymers 14, n.º 12 (14 de junho de 2022): 2406. http://dx.doi.org/10.3390/polym14122406.
Texto completo da fonteBrown, Philip S., e Bharat Bhushan. "Durable superoleophobic polypropylene surfaces". Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 374, n.º 2073 (6 de agosto de 2016): 20160193. http://dx.doi.org/10.1098/rsta.2016.0193.
Texto completo da fontePoggiali, Lisa. "Solving Refugees' Problems or Solving the Problem of Refugees?" Politikon: The IAPSS Journal of Political Science 10 (1 de novembro de 2005): 51–61. http://dx.doi.org/10.22151/politikon.10.4.
Texto completo da fontePan, Shuaijun, Rui Guo e Weijian Xu. "Durable superoleophobic fabric surfaces with counterintuitive superwettability for polar solvents". AIChE Journal 60, n.º 8 (18 de junho de 2014): 2752–56. http://dx.doi.org/10.1002/aic.14517.
Texto completo da fonteLu, Tian-Dan, Liu-Lin Zhao, Wai Fen Yong, Qian Wang, Lei Duan e Shi-Peng Sun. "Highly solvent-durable thin-film molecular sieve membranes with insoluble polyimide nanofibrous substrate". Chemical Engineering Journal 409 (abril de 2021): 128206. http://dx.doi.org/10.1016/j.cej.2020.128206.
Texto completo da fonteDe Sloovere, Dries, Danny E. P. Vanpoucke, Andreas Paulus, Bjorn Joos, Lavinia Calvi, Thomas Vranken, Gunter Reekmans et al. "Deep Eutectic Solvents as Nonflammable Electrolytes for Durable Sodium‐Ion Batteries". Advanced Energy and Sustainability Research 3, n.º 3 (12 de janeiro de 2022): 2100159. http://dx.doi.org/10.1002/aesr.202100159.
Texto completo da fonteDe Sloovere, Dries, Danny E. P. Vanpoucke, Andreas Paulus, Bjorn Joos, Lavinia Calvi, Thomas Vranken, Gunter Reekmans et al. "Deep Eutectic Solvents as Nonflammable Electrolytes for Durable Sodium‐Ion Batteries". Advanced Energy and Sustainability Research 3, n.º 3 (março de 2022): 2270007. http://dx.doi.org/10.1002/aesr.202270007.
Texto completo da fonteŠutka, Andris, Linda Mežule, Viktorija Denisova, Jochen Meier-Haack, Akshay Kulkarni, Sanda Bitina, Krisjanis Smits e Svetlana Vihodceva. "Straightforward Approach for Preparing Durable Antibacterial ZnO Nanoparticle Coatings on Flexible Substrates". Molecules 27, n.º 22 (8 de novembro de 2022): 7672. http://dx.doi.org/10.3390/molecules27227672.
Texto completo da fonteYang, Guang, Michelle Lehmann, Ethan Self e Tomonori Saito. "(Invited) Innovating Sustainable, Cost-Effective, and Durable Redox Flow Battery Membranes". ECS Meeting Abstracts MA2024-01, n.º 3 (9 de agosto de 2024): 527. http://dx.doi.org/10.1149/ma2024-013527mtgabs.
Texto completo da fonteTeses / dissertações sobre o assunto "Solvant durable"
Chagnoleau, Jean-Baptiste. "Extraction de composés naturels à l'aide de solvants durables : expérience et modélisation". Electronic Thesis or Diss., Université Côte d'Azur, 2024. http://www.theses.fr/2024COAZ5023.
Texto completo da fonteNatural plant extracts are valuable ingredients for a wide range of applications, particularly in the cosmetic or pharmaceutical industries or in the perfume or food industries. But the extraction of these natural compounds remains mainly carried out using volatile organic solvents (VOCs) and processes with significant environmental impacts. In the recent context of green chemistry and eco-extraction, sustainable alternative solvents have been developed to replace VOCs. Among these solvents, biobased solvents (BioSol), deep eutectic solvents (DES) and ionic liquids (ILs) have been the subject of intense studies over the last two decades. However, current developments in plant extraction techniques are mainly based on experimental trials, which limits the number of extraction conditions and solvents that can be evaluated. To address this limitation, several modeling tools have been developed to predict solvent properties and support solvent choice. In Chapter I, the sustainability of alternative solvents will be discussed and tools to predict solvent properties will be introduced.In the context of the circular economy and waste recycling, by-products are now considered as an alternative source of natural compounds. In chapter II of this work, the valorization of rejected kiwifruit is proposed by the extraction of bioactive compounds using sustainable solvents, namely deep eutectic solvents (DES). The results show that kiwi peel extracts obtained with carboxylic acid-based DES exhibit improved antioxidant activity compared to conventional solvents.In the field of perfumery or food industries, the extraction techniques currently used have several drawbacks. In chapter III of this work, alternative techniques were studied to propose new fragrance ingredients obtained using sustainable solvents. Extracts of leaves and fruits of pink pepper (Schinus molecular L.) were obtained by solid-liquid extraction and hydrodistillation in aqueous solutions of DES or IL, while extracts of petals of Rosa centifolia were obtained by solid-liquid extraction in BioSol, DES and IL.After extraction from the plants, the natural extracts obtained are complex chemical mixtures. Certain applications requiring the use of pure compounds, several separation techniques have been developed. Centrifugal partition chromatography (CPC) is a separation technique using the two phases of a biphasic system as mobile and stationary phase to perform preparative chromatographic separations. The possibility of using sustainable solvents and in particular DES to form biphasic systems for CPC has been little studied. In Chapter IV of this work, the development of biphasic systems containing DES were investigated as potential systems for separating natural compounds. Finally, the potential of the COSMO-RS model in the design of two-phase systems for the separation of natural compounds was investigated. The results demonstrate that COSMO-RS predicts in most cases the binodal curves of biphasic systems and the partition coefficients of natural compounds with good accuracy. Thus, these results indicate that COSMO-RS can be a powerful tool in the design of separation and purification systems.Overall, this work provides insight into the potential of various sustainable solvents for the extraction and separation of natural compounds
Garg, Garima. "Solvants ioniques biosourcés et CO2 supercritique : conception des processus durables pour la synthèse de molécules cibles (BISCO2)". Thesis, Toulouse, INPT, 2019. http://www.theses.fr/2019INPT0085.
Texto completo da fonteThis Thesis represents a multi-disciplinary project where aspects going from solvent engineering to catalysis using metal-based nanoparticles, are explored. In this project, solvent engineering has been applied to bio-based deep eutectic solvents (DES) synthesized from choline tosylalaninate and glycerol in an effort to decrease the solvent viscosity by using different amounts of carbon dioxide. In this context, molecular rotors were used as an innovative method to measure the viscosity, avoiding the use of expensive instrumentation and giving the possibility to access to the microviscosity of the system. Furthermore, DES have been applied for the synthesis of palladium nanoparticles, also acting as stabilizers, which were fully characterized. The as-prepared palladium nanoparticles were then used for catalytic hydrogenations of unsaturated C-C bonds, and nitro and carbonyl groups. Sub and supercritical CO2 conditions have been applied to improve the efficiency of the palladium nanocatalysts in hydrogenation reactions and afterwards for the extraction of organic products. This work represents an effort to intensify a hydrogenation process in a highly viscous, non-volatile, biodegradable, and non-toxic DES by using CO2 in order to decrease mass transfer limitations and to extract products from the reaction media
Fournier, Antoine. "Développement de procédés écoresponsables pour la synthèse de solvants et d'organocatalyseurs biosourcés". Thesis, Bourgogne Franche-Comté, 2018. http://www.theses.fr/2018UBFCK046/document.
Texto completo da fonteOxazolidinones are promising compounds for industrial applications, but nowadays there is not convenient method to produce them on large scale, because of the use of reactants and metallic catalysts harmful for health and environment. A new synthesis method of these compounds was thus elaborated using aminoalcohols and diethyl carbonate. This reaction is catalysed by a biobased imidazolium hydrogen carbonate which is produced by an electrochemical pathway in order to reduce its impact on the environment.This oxazolidinones synthesis method was then applied to the synthesis of a biobased oxazolidinone. To achieve this, an aminoalcohol synthesis was realised, and its structure was established from reactants that can come from renewable resources. The synthesis pathway was the object of modifications to permit the production of the aminoalcohol on a larger scale in safer conditions.The second thematic of these works is based on ionic liquids, very low volatile liquid salts, commonly used as solvents. These compounds are usually expensive, so, rather than to eliminate them at the end of their use, it is more interesting to recycle them. But their low volatility prevents their recycling by distillation, unlike common organic solvents. So, a first electrochemical method was developed, low energy consuming, permitting the recycling of biobased ionic liquids by the formation of an imidazolium hydrogen carbonate as intermediate. This method was compared with other recycling processes through a preliminary life cycle study.Keywords: oxazolidinone, aminoalcohol, imidazolium, ionic liquid, biobased, recycling, electrochemistry, sustainable development, eco-design, life cycle
Estager, Julien. "Méthodes d'activation non conventionnelles et solvants propres pour une chimie durable : synthèse et valorisation organique des liquides ioniques". Chambéry, 2007. http://www.theses.fr/2007CHAMS048.
Texto completo da fonteThese last years, RTILs have become a very attractive alternative to conventional solvents. Because of their negligible vapor pressure, they are used as green solvents. In addition, their wide liquid range, tunable polarity or good solvating ability make them very interesting in organic synthesis. Finally, their non flammability and non explosive character make them good candidates to replace traditional molecular solvents in term of green chemistry. The objectives of this PhD thesis are the synthesis and the valuable use of these compounds by taking advantage of some of their remarkable properties with the use of non conventional activation methods such as microwave and / or ultrasound irradiation. The nature and properties of ionic liquids are described along the first chapter of this work and then the physical effects that lead to sonochemistry and chemistry effects under microwave irradiation are also discussed. The second chapter of this thesis described the advantage of non traditional activation methods for improving the synthesis of second generation ionic liquids. By using, ultrasonic irradiation, different families of nitrogen-bearing ionic liquids are obtained in a solvent-free or in aqueous medium, which gives a greener touch to the overall process. Aiming to overcome some limitations of this method, a new activation method using simultaneous ultrasound/microwave irradiation has been shown to lead to good yields in second generation ionic liquid in a kinetic of only few minutes. Then, the synthesis of benzion via benzoin condensation reaction has been studied with various ionic liquids as catalysts. Microwave activation and ultrasonic irradiation have been tested and good yields in benzoin have been observed whereas the recycling of the ionic catalyst was shown to be possible in specific conditions. Finally, different ionic liquids have been chosen to catalyse the electrophilic cyclisation of Pictet-Spengler, a classical synthetic method to reach bioactive molecules. Various acidic ionic compounds, including task specific ionic liquids have been tested and good conversion in tetrahydro-β-carbolines have been obtained with the most suited ionic catalyst
Drillaud, Nicolas. "Agro-ressources et photo-régulation : vers la synthèse de nouveaux chromophores appliquée au domaine du développement durable". Compiègne, 2012. http://www.theses.fr/2012COMP2050.
Texto completo da fonteThe field of chemistry has witnessed a huge development since the 20th century. Nowadays, this field really needs to become more eco-friendly. One of the major challenges in green chemistry is to replace organic solvents with less hazardous solvents such as water. However, organic compounds are not very soluble in water, which involves a poor yield of organic reactions. To solve this problem, the use of surfactants has been considered. Indeed, those products organized themselves to form micelles, which allows the solubilization of organic compounds and play the part of chimio-reactors. Nevertheless, it can be difficult to extract the products at the end of the reaction, which will make the recycling of the reactional media less efficient. The solution we consider is to synthesize a new surfactant containing an azobenzene as chromophore. Actually, those compounds have the properties to isomerize themselves from their trans forms to their cis forms. This process is reversible. One of these surfactants was synthesized. Its physico-chemicals properties of tensioactivity and photo-regulation have been proved. The use of this surfactant as chimio-reactor for the organic synthesis has been assessed. We were able to show that its employ allows the increase of the yield of the reaction. Moreover, its photochromism properties permit to make the extraction of the products- at the end of the reaction- and also the recycling easier
Michelon, Carina. "EFICÁCIA DA ATIVAÇÃO ULTRASSÔNICA PASSIVA DO SOLVENTE NA REMOÇÃO DE MATERIAL OBTURADOR DURANTE O RETRATAMENTO ENDODÔNTICO ANÁLISE POR MICROTOMOGRAFIA COMPUTADORIZADA". Universidade Federal de Santa Maria, 2013. http://repositorio.ufsm.br/handle/1/6106.
Texto completo da fonteThe removal of pre-existing root canal filling is basic requirement for endodontic retreatment in order to reveal necrotic tissue debris and bacteria which may be responsible for periapical inflammation and by the treatment failure. The aim of this study was to evaluate the efficacy of passive ultrasonic activation (PUA) with use of organic solvent as an assistant method in removal of filling material during endodontic retreatment and determine a protocol for its utilization, using high-resolution micro-Computed Tomography (micro-CT). Thirty curved mesial roots of mandibular molars with isthmus area were instrumented and filled with gutta-percha and EndoFill (Dentsply-Maillefer, Ballaigues, Switzerland) through Tagger s hybrid technique. After 30 days, the filling material was removed with the ProTaper Retreatment rotary system (Dentsply-Maillefer, Ballaigues, Switzerland) and the root canals were prepared with the F1-F4 ProTaper instruments (Dentsply-Maillefer, Ballaigues, Switzerland). The specimens will be randomized into two groups according to the final irrigation protocol. In the Manual Group, the root canals were irrigated and agitated manually with Orange Oil solvent (Citrol, Biodinâmica, Ibiporã, Brazil), 2,5% Sodium Hypochlorite (NaOCl) (Biodinâmica, Ibiporã, Brazil) and 17% Ethylenediaminetetraacetic Acid (EDTA) (Biodinâmica, Ibiporã, Brazil). In the PUA Group, the specimens were submitted to PUA with Orange Oil solvent, 2,5% NaOCl and 17% EDTA. High-resolution micro-CT scans was used to select the sample, analyze the root filling and measure the volume of the remaining root filling material after each stage of the retreatment. The volume of remaining filling material was established and transformed into percentage in relation to total volume of filling material. The dates were statistically analyzed with a significance level set at α = 0.05. The Mann Whitney test was used to compare the percentage of remaining filling material between groups, for canal thirds in each retreatment step. The Friedman test was used to verify differences among root filling material and the successive retreatment stages at each canal segment in same group. The differences amongst the coronal, middle and apical third in the each group were analyzed with Friedman test. The Dunn test was performed as the post-hoc multiple comparison method. No significant differences between groups when rotary instrumentation (Stage 1) was considered (P > 0.05). None of the irrigation protocols removed completely the remains of the root canal filling. The use of Manual e PUA protocols decreases statistically the amount of remaining filling material compared to Stage 1 (P = 0.000). In the PUA Group, the root canals showed significantly less percentage remaining filling material compared with Manual Group, for all thirds (P < 0.05). The PUA protocol left similar amount of filling material among the apical, middle and cervical thirds (P > 0.05). None of the irrigation protocols tested was able to completely remove all gutta-percha/sealer from the curved canals and with isthmus area. However, the results of this study suggest that in root canals with complex anatomy that require endodontic retreatment, the PUA with orange oil, NaOCl and EDTA can be a great aid in the removal of the remaining root filling material left after removal of the bulk of filling material.
A remoção do material obturador pré-existente é um requisito fundamental para a realização do retratamento endodôntico a fim de revelar restos de tecido necrótico e bactérias que podem ser responsáveis pela inflamação periapical e pela falha do tratamento. O objetivo deste estudo foi avaliar a eficácia da Ativação Ultrassônica Passiva (AUP) com uso de solvente orgânico, como um método auxiliar na remoção do material obturador durante o retratamento endodôntico e determinar um protocolo para sua utilização, através da Microtomografia Computadorizada (micro-CT). Trinta raízes mesiais curvas e com istmo de dentes molares inferiores foram instrumentadas e obturadas com guta percha e cimento EndoFill (Dentsply-Maillefer, Ballaigues, Suíça) através da técnica híbrida de Tagger. Após 30 dias, o material obturador foi removido com o sistema rotatório de desobturação ProTaper Retratamento (Dentsply-Maillefer, Ballaigues, Suíça) e o canal repreparado com os instrumentos F1-F4 do sistema rotatório ProTaper Universal (Dentsply-Maillefer, Ballaigues, Suíça). Os espécimes foram aleatoriamente divididos em dois grupos (n=15) de acordo com o protocolo de irrigação final. No Grupo Manual, os canais radiculares foram irrigados e agitados manualmente com solvente a base de Óleo de Laranja (Citrol, Biodinâmica, Ibiporã, Brasil), Hipoclorito de Sódio (NaOCl) 2,5% (Citrol, Biodinâmica, Ibiporã, Brasil) e Ácido Etilenodiaminotetracético (EDTA) 17% (Citrol, Biodinâmica, Ibiporã, Brasil) . No Grupo AUP, os espécimes foram submetidos à AUP com Óleo de Laranja, NaOCl 2,5% e EDTA 17%. A seleção da amostra, a análise da obturação e a mensuração do volume de material obturador remanescente após cada estágio do retratamento foram realizadas através da micro-CT. O volume de material obturador remanescente foi estabelecido e transformado em porcentagem em relação ao volume total de material obturador. Os dados foram submetidos à análise estatística com nível de significância fixado em α = 0.05. O teste de Mann Whitney foi usado para comparar a porcentagem de material obturador remanescente entre os grupos, em cada fase do retratamento. O teste de Friedman foi usado para analisar diferenças entre o volume da obturação e os estágios do retratamento dentro de um mesmo grupo. Diferenças entre os terços cervical, médio e apical dentro do mesmo grupo foram analisadas com o teste de Friedman. O teste de Dunn foi usado como post hoc para múltiplas comparações. Não houve diferença estatisticamente significante entre os grupos quando a instrumentação rotatória (Estágio 1) foi considerada (P > 0.05). Nenhum dos protocolos de irrigação removeu completamente os remanescentes de material obturador em todos os espécimes. Tanto o protocolo da AUP quanto o Manual diminuíram a quantidade de remanescente de guta percha e cimento em relação ao Estágio 1 (P = 0.001). No grupo AUP, os canais radiculares mostraram significantemente menos porcentagem de remanescentes de material obturador que o grupo Manual, para todos os terços (P < 0.05). O protocolo da AUP deixou quantidade similar de material remanescente em todos os terços do canal radicular (P > 0.05). Nenhum dos protocolos de irrigação testados foi capaz de remover completamente a guta percha/cimento de canais radiculares curvos e com área de istmo. Contudo, os resultados obtidos neste estudo sugerem que em canais radiculares com anatomia complexa que necessitam de retratamento endodôntico, a AUP com óleo de laranja, NaOCl e EDTA pode ser um grande auxiliar na remoção dos remanescentes de material obturador deixados após a desobturação do canal radicular.
Heintz, Juliette. "Systemic approach and decision process for sustainability in chemical engineering : Application to computer aided product design". Thesis, Toulouse, INPT, 2012. http://www.theses.fr/2012INPT0087/document.
Texto completo da fonteIn a context where environmental issues are increasingly taken into account, the chemical related industry faces situations imposing a chemical product substitution. Computer aided molecular design methods, which consist in finding molecules satisfying a set of constraints, are well adapted to these situations. Using a systemic analysis of the needs and uses linked to this context, we develop a computer aided product design tool implementing a genetic algorithm. It is able to explore a wider solution space thanks to a flexible molecular framework. Besides, by allowing a very flexible setting of the problem to be solved, it enables the search of molecules sourced from renewable resources. Based on concepts from system and enterprise engineering, we formalize a decision making process dedicated to the product substitution in an industrial context. This multi-criteria decision process includes the phases of the requirements definition, of the generation of alternative solutions, of the selection of the best alternative and of the product application. It uses a model driven approach and decision making techniques that guaranty an operational alignment in addition to the strategic alignment across the chemical enterprise. Through a case study, we expose how the combination of our computer aided product design tool and our decision making process enables an environmentally compliant approach of product substitution which is both efficient and in adequacy with enterprise context
Mangin, Floriane. "Synthèses de nouveaux tensioactifs éco-compatibles : étude de synthèses catalytiques et radicalaires en milieu micellaire". Thesis, Compiègne, 2015. http://www.theses.fr/2015COMP2224/document.
Texto completo da fonteBased on concepts of sustainable development and green chemistry, one of the alternatives envisioned by chemists is to substitute organic solvents, which can be dangerous and toxic, for greener solvents. Water is the best candidate for this substitution because it is thesafest and cheapest solvent in our countries : this solvent is non-toxic, non-flammable and inexplosive. In order to overcome the low solubility of most of organic compounds in water, surfactants can be used to improve the reaction yields. Media thus obtained are difficult to recycle because they require high dilution in order to break aggregates and recover products. Therefore, using photo-switchable surfactants is a good alternative because they can organize/disorganize by light irradiation. Organic compounds could be recovered after reactions and the recyclability of the medium can be improved. For this purpose, we synthesized three surfactants having an azobenzene moiety (anionic,cationic, nonionic), to test them in micellar catalysis. Some of these surfactants, after determining their physicochemical properties (CMCs and UV-visible spectra) were studied in a pallado-catalyzed reaction, the allylic substitution of Tsuji-Trost. We have successfully demonstrated the value of using a photo-switchable surfactant compared to commercialones in terms of yields and recyclability. In other hand, Barton decarboxylation, described for the first time in 1983, permits the formation of alkanes from carboxylic acids, using tin derivatives as hydrogen donors. Since then, this reaction has always been used as a key step in total synthesis of natural compounds in organic solvents. In addition, historically, this reaction was carried out by conventional activation (heat or ultraviolet light). Therefore, we decided to study this radical decarboxylation in water, in the presence of surfactants and using unconventional activation modes : microwave and ultrasound. Moreover, instead of tin, we preferred the use of N-phenylmaleimide, already known and studied as a radical trap, to obtain maleimides substituted by carbon chains. Yields obtained in micellar media were found tobe at least as good as in organic solvents
Martins, Beatriz Lopes. "Implementação de melhorias para reduzir as rejeições durante o fabrico de embalagens de vidro". Master's thesis, 2019. http://hdl.handle.net/10316/97245.
Texto completo da fonteA presente dissertação surge na sequência da implementação de um projeto de melhoria contínua, numa fábrica de produção de embalagens de vidro. Este projeto surgiu a partir da necessidade de redução do número de rejeições verificadas, que originam o chamado “Stock especial”, o qual tem vindo a assumir um valor crescente ao longo dos anos. O objetivo máximo é então atingir uma produção sem defeitos. E, paralelamente, pretende-se conseguir monitorizar e analisar diariamente os dados relativos às rejeições verificadas e à fiabilidade das máquinas de inspeção automática. Numa primeira abordagem, é explicado o processo produtivo do vidro, bem como os processos de reescolha e de inspeção automática, processos sobre os quais irá incidir o âmbito deste projeto.O trabalho de pesquisa centrou-se na assunção da relevância que as não conformidades representam para a qualidade a garantir ao longo dos processos produtivos e daí serem consideradas como problemas que requerem uma resolução através da aplicação de um conjunto de ferramentas disponíveis. Foram desenvolvidas e implementadas ações de melhoria, discutidas nas sessões de trabalho realizadas com base, quer nos resultados obtidos no ano anterior, quer no acompanhamento dos dados relativos às rejeições das produções a decorrer durante o desenvolvimento do projeto, através da criação de um indicador de performance atualizado diariamente e disponibilizado aos colaboradores.As ações de melhoria executadas abrangem diferentes fases do processo, e são aplicadas tanto num contexto teórico, ao nível procedimental e de instrução, como prático, por exemplo, através das ferramentas a utilizar e das manutenções programadas a executar.Após uma análise aos resultados conseguidos, é estabelecida uma relação com as ações tomadas, de forma a perceber, para cada causa apontada, quais devem ser generalizadas e quais deveriam ter sido abordadas de forma diferente.
The present dissertation follows the implementation of a continuous improvement project in a glass containers production plant. This project arose from the need to reduce the number of rejections, which originate the so-called “Special stock”, which has assumed an increasing value over the years. The ultimate goal is to achieve a faultless production. At the same time, it is intended to be able to monitor and analyse daily the verified rejection data and the reliability of the automatic inspection machines.In a first approach, the glass production process is explained as well as the processes of resorting and automatic inspection, processes that will affect the scope of this project.The research work focused on the assumption of the relevance that the nonconformities represent for the quality to be assured throughout the productive processes and for this reason are considered as problems that require a resolution through the application of a set of available tools.Improvement actions were developed and implemented, discussed in the work sessions carried out, based on both the results obtained in the previous year and the monitoring of the data related to the rejections of the productions during the development of the project, through the creation of an indicator of performance updated daily and made available to employees.The improvement actions carried out cover different stages of the process and are applied in a theoretical context, at procedural and instructional level, as well as practical, for example, through the tools to be used and the scheduled maintenance to be performed. After an analysis of the results achieved, a connection is established with the actions taken, in order to realize, for each cause, which actions should be generalized, and which should have been a different approach.
Ferreira, Mariana Xavier Cardoso. "A resolução participada de problemas relativos à organização do espaço e dos materiais experienciados durante o tempo de trabalho na área da casa". Master's thesis, 2017. http://hdl.handle.net/1822/57381.
Texto completo da fonteO presente relatório de estágio, construído no âmbito da unidade curricular Estágio (inserida no plano de estudos do Mestrado em Educação Pré-Escolar), reporta-se à conceção, desenvolvimento e avaliação de um projeto de intervenção pedagógica supervisionada que decorreu numa sala de jardim de infância relativa a um grupo de vinte e cinco crianças com idades compreendidas, a oito de novembro de dois mil e dezasseis, entre os quatro anos e nove meses e os cinco anos e dez meses. Tendo em consideração as variáveis situacionais observadas, delineou-se como principal finalidade promover situações favoráveis à resolução, por parte das crianças, de problemas relativos à organização do espaço e dos materiais por si experienciados durante o tempo de trabalho na área da casa. Durante este percurso de resolução, estruturalmente documentado tendo em consideração etapas consideradas caracterizadoras do mesmo - a problematização, a delineação de um plano, a execução do plano e a avaliação -, num contexto aproximado ao da investigação-ação, procurou-se perceber qual o impacto educativo da intervenção pedagógica desenvolvida. Esta investigação, neste caso, de caráter qualitativo, ancorou-se em registos escritos e em imagens, os quais foram possibilitados graças à observação e ao registo vídeo, áudio e fotográfico. Esta informação, depois de organizada e de os seus significados essenciais serem sintetizados, permitiu concluir que, contrariamente ao verificado antes da efetivação deste projeto, os planos das crianças se revelaram mais detalhados, não sendo caracterizados por uma certa relutância relativamente à especificação dos materiais que intencionavam utilizar. Verificou-se ainda que durante o tempo de trabalho as crianças tiveram facilidade em encontrar os materiais que desejavam e levaram a cabo os seus planos, não revelando dúvidas quanto ao local e modo de arrumação dos materiais. Indiciou também que o facto de este ter sido um processo de resolução levado a cabo por um grupo de crianças ativamente implicado nele teve consideráveis repercussões no que se refere, entre outros aspetos, à sensação de bem-estar, à apropriação da utilização do espaço e da localização de cada material - a qual constitui a base de uma progressiva autonomia -, ao desenvolvimento de competências de resolução de problemas, da autoconfiança, do sentido de pertença e da consciência de si como aprendente - componentes que integram o desenvolvimento da área transversal formação pessoal e social. Neste sentido, salienta-se a importância da reflexão permanentemente sobre esta decisiva dimensão pedagógica - o espaço -, não desvalorizando, também neste âmbito, a participação das crianças: sujeitos e agentes do processo educativo.
The present practicum report, written in the scope of the practicum curricular unit (inserted in the study plan of the Master's in Pre-School Education), reports the conception, development and evaluation of a supervised pedagogical intervention project which occurred in a kindergarten room with a group of twenty-five children between four years and nine months and five years and ten months of age on the eighth of November, two thousand and sixteen. Considering the situational variabilities observed, the goal was to promote situations favourable to the solving of problems related to the organization of the space and the materials experienced over the work time at the house area by the children. During this problem solving process, structurally documented considering its characterizing steps — problematization, the definition of a plan, the execution of the plan and the evaluation -, in a context approximate to that of action research, we tried to understand the educative impact of the developed pedagogical intervention. This research, of qualitative character, anchored itself in written records and images, which were taken through observation, video, audio and photographic record. This information, once organized and its essential meanings synthesized, allowed to conclude that, contrary to what was verified before the implementation of this project, the plans of the children revealed themselves more detailed, not being characterized by a certain reluctance in specifying the materials they intended to use. Moreover, it was verified that the children could easily find the materials they wished for and that the work time proceeded as they had planned, not presenting doubts in relation to the place and mode of arranging the materials. It was also indicted that the fact that this solving process was performed by a group of children actively implicated in it had considerable repercussions in relation to, amongst other aspects, the feeling of well-being; the appropriation of the utilization of the space and the location of each material — which constitutes the basis for a progressive autonomy —; the development of problem solving competences, self-confidence, the sense of ownership and the consciousness of oneself as learner - components which integrate the development of the transversal area of personal and social formation. Thus, the importance of permanent reflexion about this decisive pedagogical dimension - space - is emphasized. It is, nonetheless, crucial not to depreciate, also in this sense, the participation of the children: subjects and agents of the educative process.
Livros sobre o assunto "Solvant durable"
Manuel, Agosin, ed. Solving the riddle of globalization and development. New York: Routledge, 2006.
Encontre o texto completo da fonte1957-, Morse Stephen, ed. Resilient participation: Saving the human project? Abingdon, Oxon: Earthscan, 2012.
Encontre o texto completo da fonteBloom, David, Manuel Agosin, George Chapelier e Jagdish Saigal. Solving the Riddle of Globalization and Development. Taylor & Francis Group, 2006.
Encontre o texto completo da fonteBloom, David, Manuel Agosin, George Chapelier e Jagdish Saigal. Solving the Riddle of Globalization and Development. Taylor & Francis Group, 2006.
Encontre o texto completo da fonteBloom, David, Manuel Agosin, George Chapelier e Jagdish Saigal. Solving the Riddle of Globalization and Development. Taylor & Francis Group, 2006.
Encontre o texto completo da fonte(Foreword), Jonathan Lash, ed. Eco-Pioneers: Practical Visionaries Solving Today's Environmental Problems. The MIT Press, 1998.
Encontre o texto completo da fonteEco-pioneers: Practical visionaries solving today's environmental problems. Cambridge, Mass: MIT Press, 1997.
Encontre o texto completo da fonteCapítulos de livros sobre o assunto "Solvant durable"
Dobrocky, Tomas, e Àlex Rovira. "Problem Solving Disorders of CSF". In IDKD Springer Series, 13–27. Cham: Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-50675-8_2.
Texto completo da fonteCook, E. K., M. Brown-Augustine, E. Creel e S. Raj. "Greener Solutions to Achieve Durable Water Repellency Without Using PFASs". In Toward a PFAS-free Future, 154–88. Royal Society of Chemistry, 2023. http://dx.doi.org/10.1039/bk9781837671410-00154.
Texto completo da fonteEfraín Deras, José, Alberto Cortés e Guillermo Funes. "The Role of the Central American Bank for Economic Integration in Regional Integration and Development". In Regional Development Banks in the World Economy, 116–30. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780198861089.003.0006.
Texto completo da fonteForestal, Jennifer. "Digital Technologies and the Problem of Democracy". In Designing for Democracy, 1–30. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780197568750.003.0001.
Texto completo da fonteKumar, Sunil, Digvijay Pandey, Sunil Kumar, Abhishek Dwivedi, Abhishek Kumar Mishra e Mohit Singh Chauhan. "Predictive Modeling of Supply Chain Disruptions in the COVID-19 Pandemic Using Advanced Machine Learning Approaches". In Advances in Logistics, Operations, and Management Science, 124–36. IGI Global, 2024. http://dx.doi.org/10.4018/979-8-3693-1347-3.ch009.
Texto completo da fonteCruz Romo, Lesly Jhanela, e Stephanie Geraldine Rosero Achicanoy. "Evaluación del extracto obtenido de la cáscara de papaya y su posible uso como colorante alimentario." In Sostenibilidad de procesos desde la economía circular en el contexto de la pospandemia covid-19, 26–44. Editorial UNIMAR, 2022. http://dx.doi.org/10.31948/editorialunimar.163.c4.
Texto completo da fonteLevitt, Roberta, e Joseph Piro. "Game-Changer". In Gamification, 807–25. IGI Global, 2015. http://dx.doi.org/10.4018/978-1-4666-8200-9.ch040.
Texto completo da fonteKhuntia, Rashmita, Manoj Kumar Banjare e Prashant Mundeja. "BASICS OF IONIC LIQUIDS AND ITS APPLICATION". In Futuristic Trends in Chemical Material Sciences & Nano Technology Volume 3 Book 6, 212–26. Iterative International Publishers, Selfypage Developers Pvt Ltd, 2024. http://dx.doi.org/10.58532/v3bjcs6p2ch7.
Texto completo da fonteSOARES, S. J. L., P. B. V. SILVA e D. S. RIBEIRO. "Betalaínas: extração e estabilidade – breve revisão". In A indústria de alimentos e a economia circular: alimentando uma nova consciência. Agron Food Academy, 2021. http://dx.doi.org/10.53934/9786599539640-11.
Texto completo da fonteTrabalhos de conferências sobre o assunto "Solvant durable"
Weliweriya, Nandana, Tra Huynh e Eleanor C. Sayre. "Standing fast: Translation among durable representations using evanescent representations in upper-division problem solving". In 2017 Physics Education Research Conference. American Association of Physics Teachers, 2018. http://dx.doi.org/10.1119/perc.2017.pr.103.
Texto completo da fonteYoon, Heonjun, Byeng D. Youn e Heung S. Kim. "Analysis of Electromechanical Performance of Energy Harvesting Skin Based on the Kirchhoff Plate Theory". In ASME 2014 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/detc2014-35433.
Texto completo da fonteBogdanovich, Alexander, e Naveen Rastogi. "3-D Variational Analysis of Bonded Composite Plates". In ASME 1996 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/imece1996-0623.
Texto completo da fonteANA, MARCIO DE FREITAS SANTA. "FORMAÇÃO DE MEMBRANA PROTÔNICA COM NANOCOMPÓSITOS SULFONADOS DE PS / PEEK / ARGILA MMT E AGENTE INTERFACIAL MB APLICADAS A CÉLULA COMBUSTÍVEL TIPO PEM". In Brazilian Congress. brazco, 2020. http://dx.doi.org/10.51162/brc.dev2020-00022.
Texto completo da fonteKonak, Fatih, e Hakan Turan. "Was the Turkish Financial Crisis in 2001 Caused by External or Internal Factors?" In International Conference on Eurasian Economies. Eurasian Economists Association, 2013. http://dx.doi.org/10.36880/c04.00724.
Texto completo da fonteOjovan, Michael I., Pavel P. Poluektov e Vladimir A. Kascheev. "Self-Disposal Option for Heat-Generating Waste". In ASME 2011 14th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2011. http://dx.doi.org/10.1115/icem2011-59182.
Texto completo da fonteSOUZA, EWERTON SILVA VIEIRA DE, CIBELE DANTAS PEIXOTO, DIANA CARLA SECUNDO DA LUZ, GABRIEL DE FIGUEIREDO BEZERRA COSTA, KARLA SUSANNA CORREIA CAVALCANTI DE ALBUQUERQUE, MAIARA ALVES DA SILVA, MARIA LETICIA DE FREITAS BASILIO e MATHEUS SANTOS DE MACEDO. "USO DO RESÍDUO DO PAPEL GERADO PELA UFRN NA FABRICAÇÃO DE TIJOLOS - DESENVOLVIMENTO DE UMA METODOLOGIA". In Brazilian Congress. brazco, 2020. http://dx.doi.org/10.51162/brc.dev2020-00018.
Texto completo da fonteMusrati, Firas, Ali Elmozwagi, Ayoub Sherik, M. Ben Abdalla, S. Sadeg, Ziyad Aoun e Seraj Bosnina. "Field Reactivation Using Innovative and Long-Term High-Alloy Coiled-Tubing Gas Lift System in Highly Corrosive Mediterranean Offshore Field, Libya". In SPE Conference at Oman Petroleum & Energy Show. SPE, 2024. http://dx.doi.org/10.2118/218574-ms.
Texto completo da fonteЛежнев, Д. В. "THE STRUCTURE OF PINE PHYTOCOENOSIS IN THE MOSCOW REGION UNDER CLIMATIC IMPACT". In Лесные экосистемы в условиях изменения климата: биологическая продуктивность и дистанционный мониторинг. Crossref, 2023. http://dx.doi.org/10.25686/foreco.2023.10.66.007.
Texto completo da fonteLópez Mejía, Juan, Jesús Diego Tuero-O'Donnell Zulaica e Saúl David Bertel Hoyos. "Una posible aplicación de la física eléctrica en la ingeniería civil". In Ingeniería para transformar territorios. Asociación Colombiana de Facultades de Ingeniería - ACOFI, 2023. http://dx.doi.org/10.26507/paper.2844.
Texto completo da fonteRelatórios de organizações sobre o assunto "Solvant durable"
Beverinotti, Javier. Prioridades de desarrollo y determinantes del crecimiento en Costa Rica. Inter-American Development Bank, fevereiro de 2016. http://dx.doi.org/10.18235/0010092.
Texto completo da fonte