Dissertations / Theses on the topic 'PEFCs'
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Daniels, Simone Monique. "Water management strategies for polymer electrolyte fuel cells (PEFCs) employing microchannel flowfields." Master's thesis, University of Cape Town, 2015. http://hdl.handle.net/11427/20033.
Full textChen, Cheng. "Membrane degradation studies in PEMFCs." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/29712.
Full textCommittee Chair: Fuller, Thomas; Committee Member: Beckham, Haskell; Committee Member: Hess, Dennis; Committee Member: Koros, William; Committee Member: Meredith, Carson. Part of the SMARTech Electronic Thesis and Dissertation Collection.
Hanna, Maha. "Étude physico-chimique de liquides ioniques pour PEMFCs." Phd thesis, Grenoble INPG, 2008. http://www.theses.fr/2008INPG0164.
Full textIonic liquids can replace water in the electrolytes of PEMFCs systems operating at 130°C. Ionic liquids resulting from the neutralization of aliphatic amines by trifluoromethanesulfonic acid show that the melting point depends on several criteria, nature of the anion, nature of the substitutions on the amine. Moreover, the majority of these salts are thermally stable upto 400°C. The study by cyclic voltammetry showed that the amines and the salts (HNR3+, A-) are stable towards very oxidative step (i. E. > 1. 9 V/HSE), compatible for their use in fuel cell. In the other hand, the best conductivity behaviour is observed for salts resulting from dissymmetric amines/ trifluoromethanesulfonic acid association. The conductivities at 130°C lie between 5 mS. Cm-1 and 45 mS. Cm-1. The incorporation of these compounds within Nafion shows good compatibility PIL/ Nafion. However, the plastizing effect of PIL in the polymer reduces the Nafion mechanical properties. The conductivities are also dramatically reduced by a factor of 5 in the best cases
Jalilian, E. "Characterization of progenitors of endothelial cells (PECs)." Thesis, University College London (University of London), 2017. http://discovery.ucl.ac.uk/1560479/.
Full textPraillet, Thierry. "Caractérisation fonctionnelle du locus pecS d'Erwinia chrysanthemi." Lyon, INSA, 1997. http://www.theses.fr/1997ISAL0039.
Full textThe phytopathogenic bacterium Erwinia chrysanthemi is responsible for soft-rot diseases of many plants. This soft-rotting activity is mainly due to the ability of the bacterium to secrete large amounts of depolymerizing enzymes (pectinases, cellulases) attacking the middle lamella of the plant tissues. The regulation of these enzymes is subjected to a complex regulatory network. In this network, the PecS protein down-regulates the synthesis of cellulases and pectinases. In this thesis, we present the biochemical and functional characterization of the PecS repressor. After overproduction and purification of the PecS protein, biochemical analysis reveals that this protein is characterized by a molecular mass of 18 kDa, an isoelectric point next to 6. 5 and probably acts in the cell as a dimer. Computer assisted proteinic sequence comparison reveals that PecS is homologous to the MarR family of transcriptional regulator. This family of transcriptional regulators docs not present any classical DNA-binding domain in the primary sequence. Functionally, the PecS protein interacts specifically with the regulatory regions of the in vivo controlled genes. Meanwhile, no consensus for the PecS binding site was detected. The PecS protein downregulates the expression of its O\VD gene as these of the adjacent pecM gene. Reciprocally, the PecM protein is needed for the full regulatory activity of PecS. Preliminary physiological studies suggest that the PecS/PecM couple could be involved in the reception of a signal liberated by the plant defense reactions. So, these two regulators could constitute a regulatory system of virulence factor synthesis during plant infection
Karlsson, Alexandra. "Attityder till certifieringssystemen FSC och PEFC i skogsbranschen." Thesis, Linnéuniversitetet, Institutionen för biologi och miljö (BOM), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-38481.
Full textOlika grupper i skogsbranschen riskerar att ha olika syn när det gäller ansvaret för ett miljömässigt hållbart skogsbruk och nyttan med certifiering och den här studien gjordes för att undersöka vilka inställningar som fanns i skogsbranschen till certifieringssystemen FSC och PEFC. Arbetet gjordes med avseende på tre grupper: skogsägare, skogsentreprenörer och anställda som arbetar på skogsföretaget Södra med certifiering i sitt dagliga arbete. I studien skickades en enkät och ett frågeformulär ut. Undersökningen visade att de tre grupperna värderade miljömässigt hållbart skogsbruk med certifiering högt. Som skogsägare fick man en certifieringspremie för det certifierade virke som man sålde. Skogsägarna såg också en ekonomisk vinning med certifiering. Skogsentreprenörerna ansåg att certifiering i högre grad gav ordning och reda i deras arbete men att det fanns en ekonomisk kostnad med att vara certifierad. Skogsföretagsgruppen menade att certifierade produkter gav tillgång till en större marknad för skogsföretaget. Grupperna var överens om att ansvaret för ett miljömässigt hållbart skogsbruk låg på de/den som ägde skogsmarken. Samtidigt uppskattade hälften av skogsägarna att deras kunskaper om certifieringarna var otillräckliga medan skogsentreprenörerna och skogsföretagsgruppen ansåg att deras kunskaper var tillräckliga. Detta kunde bero på att skogsägarna fick mindre utbildning av certifiering än de andra två grupperna. Det här arbetet har visat att grupperna inte har olika syn när det gäller vikten av att ett miljömässigt hållbart skogsbruk bedrivs.
Tessier, Béatrice Claire. "Preparation, characterisation and evaluation of core-shell electrocatalyst for PEMFCs." Thesis, University of Southampton, 2009. https://eprints.soton.ac.uk/142773/.
Full textМороз, Людмила Василівна, and Liudmyla Vasylivna Moroz. "Розвиток комунікації дітей із розладами аутичного спектру засобами PECS." ФОП Цьома С. П, 2019. http://repository.sspu.sumy.ua/handle/123456789/7549.
Full textIn recent years, special education has seen a significant increase in interest in autism. This is due to the constant increase in the detection of the specified disorder among children, scientific data on the nature and essence of the violation, as well as the accumulation of practical experience of corrective speech therapy with the specified category of children and creating opportunities for their acceptable functioning in society.
Nero, Hanna. "Traktdirektiv enligt PEFC – effektiv kommunikation från skogsägare till skogsbolag." Thesis, Linnéuniversitetet, Institutionen för skog och träteknik (SOT), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-65330.
Full textAlayyaf, Abdulmajeed A. "Synthesis of Two Monomers for Proton Exchange Membrane Fuel Cells (PEMFCs)." Digital Commons @ East Tennessee State University, 2016. https://dc.etsu.edu/etd/3015.
Full textEaton, Brandon Michael. "One Dimensional, Transient Model of Heat, Mass, and Charge Transfer in a Proton Exchange Membrane." Thesis, Virginia Tech, 2001. http://hdl.handle.net/10919/32788.
Full textMaster of Science
Gupta, Gaurav. "Bimetallic Platinum-Chromium Nanoparticles as electrocatalysts for proton exchange membrane fuel cells (PEMFCs)." Thesis, University of Birmingham, 2014. http://etheses.bham.ac.uk//id/eprint/5527/.
Full textLarsson, Beatrice. "Kommunikationssvårigheter inom autismspektrumtillstånd : En fallstudie om användningen av det alternativa kommunikationsverktyget PECS." Thesis, Uppsala universitet, Institutionen för pedagogik, didaktik och utbildningsstudier, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-238506.
Full textCruz-Manzo, Samuel. "Electrochemical mechanisms of the impedance spectrum in polymer electrolyte fuel cells." Thesis, Loughborough University, 2013. https://dspace.lboro.ac.uk/2134/12316.
Full textZHENG, WEIBO. "Pore-Scale Simulation of Cathode Catalyst Layers in Proton Exchange Membrane Fuel Cells (PEMFCs)." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1555436163992345.
Full textAlharbi, Helal. "Synthesis of Diazonium N-(Perfluoroalkyl) Benzenesulfonimide Polymers for Proton Exchange Membrane Fuel Cells (PEMFCs)." Digital Commons @ East Tennessee State University, 2019. https://dc.etsu.edu/etd/3601.
Full textChnani, Moussa. "Modélisation Macroscopique de piles PEFC et SOFC pour l'étude de leur couplage." Phd thesis, Université de Franche-Comté, 2008. http://tel.archives-ouvertes.fr/tel-00422119.
Full textUne approche de modélisation macroscopique a été développée. La complexité d'une pile à combustible réside notamment dans la prise en compte de son caractère multiphysique : elle est le siège des phénomènes électrochimique, fluidiques et thermiques. Cette difficulté a été surmontée en utilisant une analogie avec un circuit électrique équivalent pour unifier ses trois aspects, implanter et coupler ces sous-modèles dans un logiciel unique sous Matlab/Simulink™.
Un modèle de pile SOFC est proposé, appliquant le principe d'analogie électrique pour les circuits anodiques et cathodiques ainsi qu'une méthode nodale pour le comportement thermique. Le combustible considéré est un mélange d'hydrogène, d'azote, de monoxyde de carbone, de dioxyde de carbone et de vapeur d'eau, dont la composition est proche de celle obtenue à la sortie d'un reformeur. Un banc d'essai spécifique a été conçu et réalisé pour le test de petits empilements afin de valider le modèle. Deux types de conception de stack ont été étudiés : une technologie à combustion libre du gaz anodique dans le fluide et une technologie à collecteur de gaz d'échappement anodique.
Un modèle de pile PEFC isotherme a également été développé sur le même principe. La validation expérimentale a été faite sur un banc disponible au laboratoire. Une bibliothèque des éléments fluidique d'un générateur à pile à combustible a été enrichie (électrovanne, régulateur de débit, détendeur...) notamment par un modèle simplifié de compresseur d'air.
Frenell, Staaf Cecilia, and Edwina Matsson. "Privata skogsägares syn på ansvarsamt behovet av kunskap ochinformation om PEFC- certifieringen." Thesis, Linnéuniversitetet, Institutionen för skog och träteknik (SOT), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-65304.
Full textÖkshei, Jorunn, and Hannah Eriksson. "Certifieringens betydelse för naturvärden i skogen." Thesis, Linnéuniversitetet, Institutionen för skog och träteknik (SOT), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-85925.
Full textAli, Emad Mohammed. "The Effectiveness of Combining Tangible Symbols with the Picture Exchange Communication System to Teach Requesting Skills to Children with Multiple Disabilities including Visual Impairment." Diss., The University of Arizona, 2009. http://hdl.handle.net/10150/195459.
Full textArena, Francesco [Verfasser], and Rolf [Akademischer Betreuer] Hempelmann. "Cross-linked sPEEK and its application for high temperature PEMFCs / Francesco Arena. Betreuer: Rolf Hempelmann." Saarbrücken : Saarländische Universitäts- und Landesbibliothek, 2016. http://d-nb.info/1105472000/34.
Full textRodrigues, Viviane. "Efeitos do PECS associado ao video modeling em crianças com síndrome de Down." Universidade Federal de São Carlos, 2015. https://repositorio.ufscar.br/handle/ufscar/3183.
Full textFinanciadora de Estudos e Projetos
The Augmentative and Aumentative Communication (AAC) is an area of assistive technology that seeks to facilitate the participation of people in different communicative contexts. There is a variety of techniques and methods one of them Picture Exchange Communication (PECS) that proposes to develop communication skills within the social context. Associated with the implementation of PECS, some research has shown benefits of using Video Modeling (VM) that consists a teaching technique that search the development of academic, social, communication and daily leaving skills for individuals of various disabilities. The objective of this study was to apply and analyze the effects of PECS associated with the VM on the development of communication skills of children with Down syndrome. To this end, we selected three participants in a special school in one city in the state of São Paulo, aged between nine and 12 who were diagnosed as Down syndrome and complex communication needs. The following instruments were used in this study: Assessment of Communication Skills was used to evaluate functional communication skills the child; Protocol for Communication Skills Assessment in a school environment with the objective to identify the communication skills of the student in the school environment from the perception of teachers; Vocabulary selection spread sheet with the objective to identify reinforcing objects; Record Sheet that informed participants' performance during the intervention process; Vocabulary sheet monitored the vocabulary of the participants during the intervention; Chart Qualitative Performance was used as a field diary in order to record observations during the intervention process and the Social Validity of questionnaire with the objective to evaluate the perceptions of parents and teachers of the participants about the intervention. In order to verify the effects of the intervention it used Multiple Baseline Design cross subjects including three phases: baseline, intervention, and maintenance, in which the PECS associated with the VM was the independent variable and communication skills constituted the dependent variable. Data were analyzed considering some aspects such as the participant's performance, monitoring vocabulary, level of independence in the baseline, intervention and maintenance steps. The results showed that participants' performance was satisfactory both in respect of each phase and with respect to all the learning process intervention. The level of independence remained above average throughout the training for the three participants, in other words, they understood what they must do in each session of each phase without the aid of the communication partner or physical stimulator. There was an increase in the vocabulary of the three participants, although each of them with his own specificities and development of language, it is noted that the use of the pictures served as a support for the increase in this vocabulary words and phrases formulations through both figures as through speech. Thus, the present study showed a possibility of intervention that favored the participants with Down syndrome, demonstrating that the PECS associated with the VM promoted the development of communication skills, both in speech production as in the use of the figure as a form of communication.
A Comunicação Suplementar e Alternativa (CSA) é uma área da tecnologia assistiva que busca facilitar a participação das pessoas nos vários contextos comunicativos. Há uma variedade de técnicas e métodos em CSA uma delas é o Sistema de Comunicação por Troca de Figuras (PECS), que tem como propósito aumentar as habilidades de comunicação dentro do contexto social. Associado à aplicação do PECS, algumas pesquisas têm demonstrado benefícios do uso do Video Modeling (VM) que consiste em uma técnica de ensino voltada às habilidades de comunicação social, vida diária e desempenho acadêmico para indivíduos das mais variadas deficiências. A presente pesquisa teve por objetivo aplicar e analisar os efeitos do PECS associado ao VM em relação ao desenvolvimento das habilidades de comunicação em crianças com síndrome de Down. Para tanto, foram selecionados três participantes de uma escola especial de um município do interior paulista, com idades variando entre nove e 12 anos que apresentavam diagnóstico de síndrome de Down, além de necessidades complexas de comunicação. Para a coleta de dados foram utilizados os seguintes instrumentos: Avaliação das Habilidades de Comunicação que teve por finalidade avaliar as competências de comunicação funcional da criança; Protocolo para a Avaliação de Habilidades Comunicativas em ambiente escolar que objetivou identificar as habilidades comunicativas do aluno em ambiente escolar a partir da percepção dos professores; Planilha de seleção de vocabulário que objetivou identificar os itens reforçadores; Folha de Registro que informou o desempenho dos participantes durante o processo de intervenção; Folha de Vocabulário monitorou o vocabulário dos participantes durante a intervenção; Quadro Qualitativo do Desempenho foi utilizado como um diário de campo com a finalidade de registrar observações durante o processo de intervenção e o Questionário de Validade Social que teve por finalidade avaliar a percepção dos pais e professores dos participantes quanto à intervenção. Para tanto, empregou-se o delineamento experimental de linha de base múltipla cruzando com sujeitos (linha de base, intervenção e manutenção), sendo o PECS associado ao VM a variável independente e as habilidades de comunicação se constituíram na variável dependente. Os dados foram analisados considerando alguns aspectos como o desempenho dos participantes, monitoramento do vocabulário e nível de independência nas etapas de linha de base, intervenção e manutenção. Os resultados indicaram que o desempenho dos participantes foi satisfatório, tanto em relação a cada fase, como em relação à aprendizagem de todo o processo de intervenção. O nível de independência se manteve acima da média durante todo o treinamento para os três participantes, ou seja, conseguiram compreender o que precisavam fazer em cada sessão de cada fase sem o auxílio do parceiro de comunicação ou do estimulador físico. Observou-se um aumento no vocabulário dos três participantes, embora cada qual com suas especificidades e desenvolvimento de linguagem própria, foi possível perceber que o uso da figura serviu de apoio para o aumento de vocabulário presente nas formulações de palavras e frases tanto por meio das figuras como por meio da fala. Dessa forma, o presente estudo apresentou uma possibilidade de intervenção que favoreceu os participantes com síndrome de Down, demonstrando que o PECS associado ao VM promoveu o desenvolvimento das habilidades de comunicação, tanto na produção da fala como no uso da figura como forma de comunicação.
Sonne, Lehnberg Ida. "Privata skogsägares uppfattning om FSC- och PEFC-certifiering : att bli och vara certifierad." Thesis, Linnéuniversitetet, Institutionen för skog och träteknik (SOT), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-76666.
Full textBarrett, Shaun Michael. "The Effects of Video Modeling on the Adult Implementation of PECS Phase 1A." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1502878106722814.
Full textCranmer, Elizabeth. "The Effects of PECS Training on Symbolic Matching Skills in Learners with Autism." Thesis, University of North Texas, 2009. https://digital.library.unt.edu/ark:/67531/metadc10997/.
Full textCranmer, Elizabeth Glenn Sigrid S. "The effects of PECS training on symbolic matching skills in learners with autism." [Denton, Tex.] : University of North Texas, 2009. http://digital.library.unt.edu/permalink/meta-dc-10997.
Full textBoudloche, Lloyd JR. "A Comparison of Manual Signing and PECS Within a Functional Communication Training Context." Thesis, NSUWorks, 2016. https://nsuworks.nova.edu/fse_etd/105.
Full textSlavík, Jiří. "Modelování umělého života." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2007. http://www.nusl.cz/ntk/nusl-412757.
Full textDesmond, Catherine Sarah. "Generalisation of the Picture Exchange Communication System (PECS) across transfer facilitated and non-facilitated settings." Thesis, University of Canterbury. Psychology, 2012. http://hdl.handle.net/10092/9286.
Full textNilsson, Lena. "PECS som samtalsstöd vid autism : En interventionsstudie med införande av en kommunikationskarta anpassad för pratstunder." Thesis, Uppsala universitet, Logopedi, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-150410.
Full textEvaristo, Fabiana Lacerda. "Formação de aplicadores e interlocutores na utilização do PECS-Adaptado para crianças/adolescentes com autismo." Universidade Federal de São Carlos, 2016. https://repositorio.ufscar.br/handle/ufscar/7475.
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Communication is one of the most important factors related to the quality of life of people with the diagnosis of autism, which can be absent or dysfunctional, with or without speech. Due to the importance of communication for humans to establish social exchanges, this study aims to evaluate the efficacy of an applicants and interlocutors training program for use of PECS-Adaptado in children /adolescents with autism spectrum disorder. The participants were three students not oralized and/or no functional speech. The criterion for the selection of participants in this study was based on the searching for students not oralized and/or no functional speech who presented diagnosis of autism spectrum disorder and does not presented visual and/or hearing impairment, in a midsize city located within the state of São Paulo. The classroom was attended by the teacher (PP1) of the participating students (PA1 and PA2) and the mother (PM3) of one of the participating students, who were qualified as interlocutors through teaching procedures of PECS-Adaptado program. It was used intermittently design of multiple baseline between participants, in which the subject acts as his own control. Family members of participants provide data for research according to the semi-structured initial interview guide and the list of participant’s interests. At the end of the sessions with the phase 3, the PA1 and PA2’s relatives were invited to follow the activities with their children at school, in order to also becoming immediate interlocutors. PM3 attended all sessions and another relative (father PA3) monitored the activities from stage 3. The interventions were conducted in a classroom of a special education school with the PA1 and PA2 by interlocutor PP1, and the house of PA3 by interlocutor PM3. The records protocols with PECS-Adaptado’s phases were used to record the performance of the participants. It was also used a record protocol for the interlocutors in order to recognize their performance through the opportunities offered to the participants. The results indicate that, after the application of interlocutors training program with the teacher and with the mother, the participating students presented satisfactory development of communication by exchange of figures. During the survey, participating students increased their communication skills, according to their needs and their desires through the interference of the interlocutors, who had an important role in the achievement of the program's effectiveness. The applicants and interlocutors, in addition of being capacitated, also understood the importance of using the alternative communication program for teaching and learning.
A comunicação tem sido um dos fatores mais importantes apontados no que diz respeito à qualidade de vida de pessoas com o diagnóstico de autismo, muitas vezes, nesses casos, podendo ser inexistente ou disfuncional, com ou sem fala. Diante da importância da comunicação para o ser humano estabelecer trocas sociais, esta pesquisa teve como objetivo avaliar a eficácia de um programa de formação de aplicadores e interlocutores para utilização do PECS-Adaptado em crianças/adolescentes com transtorno do espectro do autismo. Participaram da pesquisa três alunos não oralizados e/ou sem fala funcional. O critério para a seleção dos participantes baseou-se na procura de alunos não oralizados e/ou sem fala funcional, com diagnóstico de transtorno do espectro do autismo e ausência de deficiência visual e/ou auditiva, em um município de médio porte localizado no interior do estado de São Paulo. Participaram, também, a professora da sala de aula (PP1) dos participantes alunos (PA1 e PA2) e a mãe (PM3) de um dos participantes alunos, as quais foram capacitadas como aplicadoras e interlocutoras por meio dos procedimentos de ensino do programa PECS-Adaptado. Foi utilizado o delineamento intermitente de linha de base múltipla entre participantes, em que o sujeito atua como o seu próprio controle. Os familiares dos participantes forneceram dados necessários para o planejamento das intervenções, de acordo com o roteiro de entrevista semiestruturado inicial e com a lista de interesses dos participantes. Ao final das sessões, com a fase 3, os familiares de PA1 e PA2 foram convidados a acompanhar as atividades com os seus filhos na escola, a fim de se tornarem também interlocutores imediatos. A PM3 participou de todas as sessões e outro familiar (pai de PA3) acompanhou as atividades a partir da fase 3. As intervenções foram realizadas em uma sala de aula de uma escola de Educação Especial com o PA1 e PA2 pela interlocutora PP1, e na residência de PA3, pela interlocutora PM3. Os protocolos de registros com as fases do PECS-Adaptado foram usados para registrar o desempenho dos participantes. Também foi utilizado um protocolo de registro para as aplicadoras e interlocutoras a fim de reconhecer seu desempenho por meio das oportunidades oferecidas aos participantes. Os resultados alcançados apontam que, a partir da aplicação do programa de formação de interlocutores com a professora e com a mãe, os participantes alunos apresentaram desenvolvimento satisfatório de comunicação por troca de figuras. Durante a pesquisa, os participantes alunos aumentaram suas habilidades comunicativas de acordo com as suas necessidades e seus desejos, por meio da ação das aplicadoras e interlocutoras, que tiverem interferência durante todo o programa, garantindo sua eficácia. As aplicadoras e interlocutoras além de terem sido capacitadas, também compreenderam a importância do uso do programa de comunicação alternativa para o processo de ensino e aprendizagem.
Farrer, Amy. "Do children with autism use the Picture Exchange Communication System (PECS) to make spontaneous requests?" Thesis, University of Southampton, 2010. https://eprints.soton.ac.uk/171963/.
Full textLavigne, Olivier. "Caractérisation des films passifs pour la définition de nouveaux matériaux : application aux plaques bipolaires métalliques des systèmes PEMFCs." Lyon, INSA, 2009. http://theses.insa-lyon.fr/publication/2009ISAL0047/these.pdf.
Full textThe aim of this work is the determination of materials solutions for stamped bipolar plates used in PEMFCs systems. The 316L SS was chosen as the reference material. However, the conductivity of its passive layer remains low, and leads to a diminution of the fuel cell performances. Surface modifications of this material are thus essential. The first way developed in this work was the physical vapour deposition of chromium nitrides onto the stainless steel. Structure, as well as corrosion resistance and physical properties, of formed passive layers onto these samples, depend on the nitrogen content of the coating and the nature of the substrate. Ex-situ characterisations of ‘high nitrogen’ coating on 316L suggest its suitability for use in the bipolar plates of PEMFCs. However, the coated materials induce supplementary costs (process) and need good mechanical properties for stamping. The second way of surface modification was thus the modification of the existent passive layer formed onto the 316L. Cerium was added within the oxide layer by an electrochemical treatment. This treatment preserves the corrosion resistance of the material, and allows a decrease of the interfacial contact resistance value of 78%. Based on the above treatment, new steels compositions was proposed, including some % in weight of doping elements (Ce, Ta) in order to modify the passive film. Physical and chemical characterisations of these new materials showed their suitability for the targeted application. Indeed, these alloys display good corrosion resistance properties, as well as a great decrease of the interfacial contact resistance. In spite of the fact that these values do not reach the wanted goal, this work validates an original method of material choice
Ben, Chaabane Delia B. "The effects of parent implemented training on improvisation of mands by children with autism." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1172144721.
Full textReum, Mathias. "Sub-millimeter resolved measurement of current density and membrane resistance in polymer electrolyte fuel cells (PEFC) /." Zürich : ETH, 2008. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=17979.
Full textWalter, Catia Crivelenti de Figueiredo. "Os efeitos da adaptação do PECS associada ao Curriculum funcional natural em pessoas com autismo infantil." Universidade Federal de São Carlos, 2000. https://repositorio.ufscar.br/handle/ufscar/3043.
Full textFinanciadora de Estudos e Projetos
Communication disorders in persons diagnosed with autism, generally are severe and bring difficulties to their interpersonal relationships, putting them apart, being not comprehended by the majority of other people. The main objective of this study was to evaluate the effects of the adaptation of the Picture Exchange Communication System (PECS) applied in the context of a natural functional curriculum (adapted PECS) in the communication of persons diagnosed as autistic, who do not presented oral language and/or functions speech at the beginning of the study. As a secondary objective, the study had the intention to verify if the adapted PECS would help the participants to begin to use of speech. The study was conducted at Centro Ann Sullivan do Brasil (CASB), located in Ribeirão Preto City São Paulo State. In order to verify the effects of the intervention, an AB simple subject research design was applied and replicated within four boys with ages varying from 5 to 8 years old, diagnosed as autistic. The study involved two phases: baseline and intervention. In order to train the 5 phases of the adapted PECS, the PCS (Picture Communication System) pictures was used. The training and data collection sessions were held during 2 years. The results showed that all participants presented changes in their communicative behavior and acquired an expressive vocabulary in some words, some sounds and in the use of pictures, that varied from 25 to 61, all being used with communicative function. The obtained data suggests that the use of pictures with interaction and solicitation objective of something very much desired, seems to contribute to the emission of speech, sounds and gestures, used with communicative function by the participants. However, other studies must be encouraged, as well as the adapted PECS extension to persons with different diagnoses, who are able to benefit from any alternative communication system. The study concludes, since the PECS communication system has a basic element the interested picture exchanging by the participants through an interactive action, could contribute, in the future, to the inclusion process, not only at school environment, but also to home and community
Os distúrbios da comunicação presentes em pessoas com diagnóstico de Autismo Infantil geralmente são graves e dificultam o relacionamento interpessoal, mantendo-as distantes e, muitas vezes, não compreendidas pela maioria das pessoas. O presente estudo teve como objetivo avaliar os efeitos da adaptação do Sistema de Comunicação por Troca de Figuras (PECS - The Picture Communication System), aplicado ao contexto do Curriculum Funcional Natural (PECSAdaptado), na comunicação de pessoas com Autismo Infantil, que não apresentavam linguagem oral e/ou fala funcional. Como objetivo secundário, o estudo teve a intenção de verificar se o PECS-Adaptado favoreceria o aparecimento da fala. Para tanto, o estudo foi desenvolvido no Centro Ann Sullivan do Brasil - CASB, localizado na cidade de Ribeirão Preto, Estado de São Paulo. Para verificar os efeitos da intervenção deste estudo, foi realizado um delineamento do tipo AB e replicado em 4 meninos, com idades variando entre 5 e 8 anos de idade, com diagnóstico de Autismo Infantil, e envolveu 2 fases: linha de base e intervenção. Para o treinamento das 5 fases do PECS-Adaptado, foram utilizadas as figuras do PCS (Picture Communication System). As sessões de treinamento e coleta de dados ocorreram no decorrer de 2 anos. Os resultados mostraram que todos os participantes apresentaram mudanças no comportamento comunicativo, adquiriram vocabulário expressivo de algumas palavras, alguns sons e uso de figuras, que variou entre 25 e 61, sendo sempre utilizadas com função comunicativa. Os dados obtidos sugerem que a utilização de figuras com a finalidade de interação e solicitação de algo desejado parece ter contribuído para o aparecimento de sons, palavras e gestos usados com função comunicativa pelos participantes. No entanto, outros estudos devem ser encorajados, assim como a própria extensão do uso do PECS-Adaptado a outras pessoas com diferentes diagnósticos, mas que poderiam se beneficiar do uso da comunicação alternativa. Os resultados obtidos com o presente estudo são indicativos que o PECS-Adaptado, por ter como elemento básico a troca de figuras de interesse dos participantes, através da ação interativa, poderá contribuir futuramente no processo de inclusão dessas pessoas, não somente no ambiente escolar, como também na família e na comunidade.
Rydé, Carl. "Erfarenheter av uppföljning efter gallring och föryngringsavverkning för att nå kraven i miljöcertifieringssystemen FSC och PEFC." Thesis, Linnéuniversitetet, Institutionen för skog och träteknik (SOT), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-27326.
Full textThe environmental certification systems PEFC and FSC require follow-up and auditing to ensure that the requirements are followed and that quality is achieved. The purpose of this study was to illuminate the experience of machine entrepreneurs, forestry managers and timber buyers of work with evaluation of environmental certified forestry. Data was gathered through telephone interviews and was analysed using qualitative content analysis. Evaluation and contract directives have an important role in achieving environmental certification requirements. Dialogue and co-operation between the different groups is important, according to respondents, for environmental certifications to achieve high quality and to create commitment and desire to improve the work.
Krekel, Daniel Verfasser], Detlef [Akademischer Betreuer] [Stolten, and Hermann-Josef [Akademischer Betreuer] Wagner. "Betriebsstrategien für Brenngaserzeugungssysteme zur Anwendung in HT-PEFC-Hilfsstromaggregaten / Daniel Krekel ; Detlef Stolten, Hermann-Josef Wagner." Aachen : Universitätsbibliothek der RWTH Aachen, 2017. http://d-nb.info/1162845643/34.
Full textKrekel, Daniel [Verfasser], Detlef [Akademischer Betreuer] Stolten, and Hermann-Josef [Akademischer Betreuer] Wagner. "Betriebsstrategien für Brenngaserzeugungssysteme zur Anwendung in HT-PEFC-Hilfsstromaggregaten / Daniel Krekel ; Detlef Stolten, Hermann-Josef Wagner." Aachen : Universitätsbibliothek der RWTH Aachen, 2017. http://nbn-resolving.de/urn:nbn:de:101:1-2018071607583149820065.
Full textRouanet, Carine. "Investigation du mécanisme d'action du système de régulation impliquant PecS chez la bactérie phytopathogène Erwinia chrysanthemi." Paris 7, 2002. http://www.theses.fr/2002PA077167.
Full textBergman, Elin, and Sofie Levander. "Återanvändning som kommunikativ resurs : En samtalsanalytisk studie av kommunikation med PECS hos en pojke med diagnosen autism." Thesis, Linköping University, Linköping University, Department of Clinical and Experimental Medicine, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-15714.
Full textCommunicative recycling, to repeat utterances uttered by oneself or others, is a common phenomenon in all societies and languages. The talk of persons with autism often features recycling. The aim of this study was to identify different forms of recycling in communication involving a boy with autism and to describe its functions. Communication between the boy with autism, who used Picture Exchange Communication System (PECS) to communicate, and his parents and teachers was videotaped. The conversations took place in familiar settings, in the boy’s home and at his pre-school. The theoretical approach in the present study was Conversation Analysis (CA). The results provide further support for other studies in that recycling is an important interactional resource for children with limited linguistic capacities. The boy recycled the conversational frames taught in PECS and accommodated these to fit the context. The use of frames also enabled him to communicate with sentences. The transcribed examples exhibited diect as well as delayed recycling of other persons utterances made by the boy. The communicative recycling found in this study fulfilled all parts of the five-folded definition of functions presented by Tannen (1987): facilitating production and comprehension, creating a sense of connection, being a communicative resource enabling interaction and creating coherence as interpersonal involvement. The communicative recycling enabled the boy and his conversational partners to share communicative conventions. The use of recycling in conversations by people with autism may be a step towards a more generative use of language.
Wilbrand, Christiane Verfasser], Detlef [Akademischer Betreuer] [Stolten, and Eike [Akademischer Betreuer] Stumpf. "Reformierung von BtL-Kraftstoffen für die HT-PEFC in luftfahrttechnischen Systemen / Christiane Wilbrand ; Detlef Stolten, Eike Stumpf." Aachen : Universitätsbibliothek der RWTH Aachen, 2018. http://d-nb.info/1194066992/34.
Full textWilbrand, Christiane [Verfasser], Detlef [Akademischer Betreuer] Stolten, and Eike [Akademischer Betreuer] Stumpf. "Reformierung von BtL-Kraftstoffen für die HT-PEFC in luftfahrttechnischen Systemen / Christiane Wilbrand ; Detlef Stolten, Eike Stumpf." Aachen : Universitätsbibliothek der RWTH Aachen, 2018. http://d-nb.info/1194066992/34.
Full textRylander, Anna. "Naturhänsyn vid föryngringsavverkningar : En jämförelse mellan certifierade och o-certifierade hyggen." Thesis, Linnéuniversitetet, Institutionen för skog och träteknik (SOT), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-44497.
Full textGenevey, Daniel Bruno. "Transient Model of Heat,Mass,and Charge transfer as well as Electrochemistry in the Cathode Catalyst Layer of a PEMFC." Thesis, Virginia Tech, 2001. http://hdl.handle.net/10919/36286.
Full textMaster of Science
King, Melissa Lynne. "Effectiveness of the iPad in Enhancing the Mand Repertoire for Children with Autism." OpenSIUC, 2011. https://opensiuc.lib.siu.edu/theses/673.
Full textSalomoni, Silvia. "L'impronta ambientale dei servizi: il caso della ristorazione scolastica." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/18121/.
Full textPu, Hansong. "An Analysis of Preferred Equity Redemption Cumulative Stock." Thesis, University of North Texas, 1994. https://digital.library.unt.edu/ark:/67531/metadc277588/.
Full textRosén, Tomas. "Determination of water saturation dependent gas transport properties of PEFC gas diffusion layers via the Lattice Boltzmann method." Thesis, KTH, Mekanik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-41814.
Full textHaddou, Marie. "Complexes de polyélectrolytes : Morphologies, cinétique et thermodynamique d'assemblage." Thesis, Bordeaux, 2019. http://www.theses.fr/2019BORD0031.
Full textComplexes of polyelectrolytes (PECs) are oppositely charged polymers assemblies held together by electrostatic interaction. As the non-covalent assembly of macromolecules/colloids in solution has been thoroughly investigated over the last decade with a particular emphasis put on the morphology of the final aggregates as a function of the building blocks-chemistry, the objective of this thesis is to come to a better understanding of the influence of interaction strength between polyelectrolytes on complexes morphologies, as well as kinetics and thermodynamics of the complexation. For this study, weakly and strongly interacting systems given rise to coacervate and precipitate phases has been elected. Those systems have been studied on a wide charge ratio scale (Z[+]/[-]) to span several physical states of the PECs (soluble and colloidal PECs, dense phases). Morphologies of assemblies are assessed by microscopy (optical, fluorescence, atomic force) and scattering techniques (neutron, light). Kinetics and thermodynamics of the complexation process are studied by use of a stopped-flow mixing device and an isothermal titration calorimeter. Results gave us keys to discriminate strongly interacting systems from weakly interacting ones. In particular, the ‘strong systems’ are showed to be non-equilibrium assemblies, ie. the formulation pathway or the way these different macromolecules are coming into contact is then a key step. Another important aspect that could explain the complexation process behavior is the hydration energy of the polyelectrolytes. Calorimetry measurements have been performed for numerous polyelectrolytes and then correlated to complexes properties