Die vorliegende Untersuchung behandelt den Homogenitätsbereich, sowie die strukturellen und physikalischen Eigenschaften der Clathrat-I-Phasen im System Ba-Au-Ge. Im Zustandsdiagramm existieren zwei separate Phasenbereiche mit Clathrat-I-Phasen unterschiedlicher Symmetrie, welche durch Au-Gehalt und Leerstellenkonzentration bestimmt wird. Bei niederem Goldgehalt existiert die Clathrat-I-Phase mit einer 2 × 2 × 2 Überstruktur des Basistyps in der Raumgruppe Ia-3d. Der Existenzbereich dieser Phase reicht bei 800 °C bis zur Zusammensetzung Ba8Aux•3–0.563xGe43–0.437x mit x = 1.1. Nach einem schmalen Zweiphasenbereich im Bereich 1.1 < x < 1.6 folgt für höhere Au-Konzentrationen eine neue, tetragonale Clathrat-I-Variante mit Raumgruppe P42/mmc. Diese umfasst den gesamten Homogenitätsbereich von x = 1.6 - 5.4. Für höherer Au-Konzentrationen nähert sich die Symmetrie dem Pm-3n-Basistyp an. Der thermoelektrische ZT-Wert steigt jeweils mit der Temperatur und erreicht für die Proben im Bereich x ≈ 5.4 bei 670 K ein Maximum von ≈ 0.9. Die Aufskalierung der Präparation und Voraussetzungen für den Generatorbau werden untersucht. / The present study deals with the homogeneity range as well as the structural and physical properties of clathrate I phases in the Ba-Au-Ge system. The phase diagram comprises phases with the clathrate I type of structure in two separate regions. The symmetry of the respective crystal structures is governed by both, Au content and vacancy concentration. At low gold content, the clathrate I phase forms a 2 × 2 × 2 superstructure of the base type with space group Ia-3d. At 800 °C this phase exists for the general composition formula Ba8Aux•3–0.563xGe43–0.437x till x = 1.1. After a narrow two-phase range in the region 1.1 < x < 1.6, a new, tetragonal clathrate I variant with space group P42/mmc follows for higher Au concentrations x = 1.6 - 5.4. For higher Au concentrations the crystal symmetry gradually approximates the common Pm-3n type of structure. The thermoelectric ZT value increases with temperature reaching a maximum of ≈ 0.9 for the samples in the range x ≈ 5.4 at 670 K. The upscaling of the preparation and other requirements for generator construction are examined.

Vielschichtige Eigenschaftsprofile benötigen zunehmend moderne Verbundwerkstoffe und Werkstoffverbunde einschließlich der raschen Entfaltung neuer Fertigungstechnologien, da der monolithische Werkstoff bzw. ein einziger Werkstoff den heutigen komplexen Anforderungen nicht mehr genügen kann. Zukünftige Werkstoffsysteme haben wirtschaftlich eine Schlüsselposition und sind auf den Wachstumsmärkten von grundlegender Bedeutung. Gefragt sind maßgeschneiderte Leichtbauwerkstoffe (tailor-made composites) mit einem adaptierten Design. Dazu müssen Konzepte entwickelt werden, um die Kombination der Komponenten optimal zu gestalten. Das erfordert werkstoffspezifisches Wissen und Korrelationsvermögen sowie die Gestaltung komplexer Technologien, auch unter dem Aspekt der kontinuierlichen Massen- und Großserienfertigung (in-line, in-situ) und damit der Kostenreduzierung bislang teurer Verbundwerkstoffe und Werkstoffverbunde. In der vorliegenden Arbeit wird in vergleichbarer und vergleichender Art und Weise sowie abstrahierter Form ein Bogen über das Gesamtgebiet der Verbundwerkstoffe und Werkstoffverbunde gespannt. Eine zusammenfassende Publikation über dieses noch sehr junge, aber bereits breit aufgestellte Wissenschaftsgebiet fehlt bislang. Das ist der Separierung der einzelnen, fest aufgeteilten Gruppierungen der Verbundwerkstoffe geschuldet. Querverbindungen werden selten hergestellt. Dieses Defizit in einem gewissen Maße auszugleichen, ist Ziel der Arbeit. Besondere Berücksichtigung finden Begriffsbestimmungen und Klassifikationen, Herstellungsverfahren und Eigenschaften der Werkstoffe. Es werden klare Strukturierungen und Übersichten herausgearbeitet. Zuordnungen von etablierten und neuen Technologien sollen zur Begriffsstabilität der Terminologien „Mischbauweise“ und „Hybrider Verbund“ beitragen. Zudem wird die Problematik „Recycling und Recyclingtechnologien“ diskutiert. Zusammenfassend werden Handlungsfelder zukünftiger Forschungs- und Entwicklungsprojekte spezifiziert. Aus dem Blickwinkel der verschiedenen Herstellungsrouten insbesondere für Halbzeuge und Bauteile und der dabei gewonnenen Erkenntnisse werden verallgemeinerte Konzepte für tailor-made Verbundwerkstoffe und Werkstoffverbunde vorgeschlagen („Stellschraubenschema“). Diese allgemeinen Werkstoffkonzepte werden auf eigene aktuelle Forschungsprojekte der Schwerpunktthemen Metallmatrix- und Polymermatrix-Verbundwerkstoffe sowie der hybriden Werkstoffverbunde appliziert. Forschungsfelder für zukünftige Projekte werden abgeleitet. Besonderes Augenmerk gilt den hybriden Verbunden als tragende Säule zukünftiger Entwicklungen im Leichtbau. Hier spielen in-line- und in-situ-Prozesse eine entscheidende Rolle für eine großseriennahe, kosteneffiziente und ressourcenschonende Produktion. / Complex property profiles require increasingly advanced composite materials and material compounds, including the rapid deployment of new production technologies, because the monolithic material or a single material can no longer satisfy today's complex requirements. Future material systems are fundamentally important to growth markets, in which they have an economically key position. Tailor-made lightweight materials (tailor-made composites) with an adapted design are needed. These concepts have to be developed to design the optimum combination of components. This requires material-specific knowledge and the ability to make correlations, as well as the design of complex technologies. Continuous large-scale and mass production (in-line, in-situ), thus reducing the costs of previously expensive composite materials and material compounds, is also necessary. The present work spans the entire field of composite materials and material compounds in a comparable and comparative manner and abstract form. A summarizing publication on this still very new, but already broad-based scientific field is not yet available. The separation of the individual, firmly divided groups of the composite materials is the reason for this. Cross-connections are rarely made. The objective of this work is to compensate to some extent for this deficiency. Special consideration is given to definitions and classifications, manufacturing processes and the properties of the materials. Clear structures and overviews are presented. Mapping established and new technologies will contribute to the stability of the terms "mixed material compounds" and "hybrid material compounds". In addition, the problem of recycling and recycling technologies is discussed. In summary, areas for future research and development projects will be specified. Generalized concepts for tailor-made composite materials and material compounds are proposed ("adjusting screw scheme") with an eye toward various production routes, especially for semi-finished products and components, and the associated findings. These general material concepts are applied to own current research projects pertaining to metal-matrix and polymer-matrix composites and hybrid material compounds. Research fields for future projects are extrapolated. Particular attention is paid to hybrid material compounds as the mainstay of future developments in lightweight construction. In-line and in-situ processes play a key role for large-scale, cost- and resource-efficient production.

Die vorliegende Arbeit beschäftigt sich mit der Entwicklung, Herstellung und Charakterisierung partikelverstärkter Weich- und Weichaktivlote mit dem Ziel der Eigenschaftsverbesserung der Lötverbindungen. Ausgehend vom Stand der Wissenschaft und Technik wird ein Konzept zur Einbringung von keramischen Verstärkungspartikeln in eine Sn-Basis-Lotmatrix erarbeitet und umgesetzt. Im Falle partikelverstärkter Weichaktivlote wird durch das zusätzliche Legieren der Lotmatrix mit dem reaktiven Element Titan die Ausbildung von zwei Reaktionszonen erreicht, welche die Haftung zwischen Partikel und Matrix steigern. Die mechanischen Eigenschaften dieser Verbindungen werden gegenüber der Partikelverstärkung ohne Aktivelement weiter verbessert. Zum Fügen der Aluminium- und Alumi-niummatrix-Verbundwerkstoffe (AMC) findet ein ultraschallunterstütztes Lötverfahren Anwendung, das eine Benetzung ohne den Einsatz von Flussmitteln ermöglicht. Die hergestellten Lötverbindungen zeichnen sich durch gesteigerte Verbindungsfestigkeiten, vor allem bei erhöhten Temperaturen, sowie eine verbesserte Kriechbeständigkeit aus. Aufgezeigt wird das Potenzial der Lote anhand von Zug- und Scherzugversuchen sowie Kriechuntersuchungen, die mit den Ergebnissen der Mikrostrukturanalyse und der fraktografischen Bewertung korreliert werden. Die Arbeit schließt mit einer Diskussion und sich daraus ergebenden Folgerung. Weiterhin liefert sie Ansätze für weitere Forschungstätigkeiten auf diesem Gebiet. / This thesis deals with the development, manufacturing and characterisation of particle-reinforced solders and active solders to improve the mechanical properties of soldered joints. Based on the state of the art, a concept for embedding of ceramic particles in a Sn-based filler matrix is planed and realised. In the case of particle-reinforced active solders two interfacial reaction layers which increase the bonding between the particles and the filler matrix are formed due to the alloying by the reactive element Ti. The mechanical properties of these joints are improved in comparison to particle-reinforced solders without surface-active elements. For joining of aluminium and aluminium matrix composites (AMC), an ultrasound-supported soldering process was used, that accomplishes a fluxless wetting. The produced joints are featured by an improved joining strength, mainly at elevated temperatures, and an increased creep resistance. The potential of the developed solders is performed by tensile and shear as well as creep tests that are correlated with the results of the micro-structural and fractographical analysis. The Discussion and the drawn conclusions summarise the work and give new approaches for following investigations.

The modified mapping-collocation (MMC) method is applied to analyze a circumferential crack in an isotropic curved beam. Based on the method a MATLAB code was developed to obtain the stress field. Incorporating the stress correlation technique, the opening and sliding fracture mode stress intensity factors (SIF)s of the crack for the beam under pure bending moment load case are calculated. The MMC method aims to solve two-dimensional problems of linear elastic fracture mechanics (LEFM) by combining the power of analytic tools of complex analysis (Muskhelishvili formulation, conformal mapping, and extension arguments) with simplicity of applying the boundary collocation method as a numerical solution approach. Qualitatively, a good agreement between the computed stress contours and the fringe shapes obtained from the photoelastic experiment on a plexiglass specimen is observed. Quantitatively, the results are compared with that of ANSYS finite element analysis software. The effect of crack size, crack position and beam thickness variation on SIF values and mode mixity is investigated.

L'objectif de cette thèse est de proposer des solutions et améliorations de performance à certains problèmes de sélection des paramètres acoustiques pertinents dans le cadre de la reconnaissance de la parole. Ainsi, notre première contribution consiste à proposer une nouvelle méthode de sélection de paramètres pertinents fondée sur un développement exact de la redondance entre une caractéristique et les caractéristiques précédemment sélectionnées par un algorithme de recherche séquentielle ascendante. Le problème de l'estimation des densités de probabilités d'ordre supérieur est résolu par la troncature du développement théorique de cette redondance à des ordres acceptables. En outre, nous avons proposé un critère d'arrêt qui permet de fixer le nombre de caractéristiques sélectionnées en fonction de l'information mutuelle approximée à l'itération j de l'algorithme de recherche. Cependant l'estimation de l'information mutuelle est difficile puisque sa définition dépend des densités de probabilités des variables (paramètres) dans lesquelles le type de ces distributions est inconnu et leurs estimations sont effectuées sur un ensemble d'échantillons finis. Une approche pour l'estimation de ces distributions est basée sur la méthode de l'histogramme. Cette méthode exige un bon choix du nombre de bins (cellules de l'histogramme). Ainsi, on a proposé également une nouvelle formule de calcul du nombre de bins permettant de minimiser le biais de l'estimateur de l'entropie et de l'information mutuelle. Ce nouvel estimateur a été validé sur des données simulées et des données de parole. Plus particulièrement cet estimateur a été appliqué dans la sélection des paramètres MFCC statiques et dynamiques les plus pertinents pour une tâche de reconnaissance des mots connectés de la base Aurora2.

A seguinte Dissertação de Mestrado é o resultado de uma etnografia em campo, dentro do Mestrado em Desenvolvimento Rural. A pesquisa centra-se no Movimento das Mulheres Camponesas (MMC) e na Farmacinha Comunitária do vale da Solidão (Maquiné, RS), espaço onde as mulheres se reúnem para elaborar remédios com plantas medicinais. Esta Farmacinha surgiu em 1991, sendo a precursora de mais de 70 experiências similares. Esta dissertação tem como objetivo analisar, sob a ótica da teoria pós-colonial e da pós-modernidade, qual é o modelo de desenvolvimento que estas mulheres propões e constroem, frente a lógica do discurso desenvolvimentista institucional. Para este fim o trabalho divide-se em três partes. A primeira analisa os diferentes discursos de desenvolvimento a respeito da mulher e do rural, para tratar na segunda parte sobre o próprio MMC e seu discurso feminista e de desenvolvimento, percebido aqui como uma forma de resistência e de revindicação da importância do 'papel da mulher' e da 'luta pela vida'. A terceira e última parte do trabalho analisa as práticas concretas e cotidianas da Farmacinha da Solidão, cujas atividades vêm sendo acompanhadas desde 2012. Se bem estas atividades referem-se em grande parte à elaboração de remédios com plantas medicinais, a perspectiva aqui adotada faz com que percebamos a Farmacinha como um lugar onde o cotidiano e o pessoal tornam-se políticos e enfrentam o modelo, que pretende-se hegemônico, de desenvolvimento. / The following Master' s thesis is the result of an ethnography in the field, within the Masters in Rural Development. The research focuses on de “Movimento das Mulheres Camponesas” (Movement of the Peasant Women, MMC), and the “Farmacinha Comunitária” from the valley of Solidão (Maquiné, RS), space where women come together to develop drugs with medicinal plants. This “Farmacinha” appeared in 1991, being the precursor of more than 7 similar experiences. This thesis aims to analyze, from the perspective of post-colonial theory and post-modernism, which is the development model that these women proposes and built, compared to the logic of the institutional development discourse. To this end, the thesis is divides into three parts. The first one analyzes the different discourses about development about women and rural, and explores in the second one the MMC itself ans its feminist and development discourse, perceived here as a form of resistance and a claim of the importance of 'women's role' and the 'struggle for life'. The third and final part analyzes the practical and everyday practices of the “Farmacinha” from Solidão, whose activities have been followed since 2012. Although these activities relate largely to the development of drugs with medicinal plants , the perspective adopted here makes we realize the “Farmacinha” as a place where the everyday and the personal become politics and face the model, which aims to be hegemonic, of development. / El siguiente trabajo es el resultado de una etnografía en campo, dentro de la Maestría en Desarrollo Rural. La investigación se centra en el Movimiento de las Mujeres Campesinas (MMC) y en la Farmacinha Comunitaria del valle de la Solidão, (Maquiné, RS), espacio donde las mujeres se reúnen para elaborar remedios con plantas medicinales. Esta Farmacinha surgió en 1991, siendo precursora de más de 70 experiencias similares. Esta disertación tiene como objetivo analizar, bajo la óptica de la teoría pos-colonial y de la pos-modernidad, cuál es el modelo de desarrollo que estas mujeres proponen y construyen frente a la lógica del discurso desarrollista institucional. Para este fin el trabajo se divide en tres partes. La primera analiza los diferentes discursos del desarrollo con respecto a la mujer y la medio rural, para tratar en la segunda parte sobre el propio MMC y su discurso feminista y de desarrollo, percibido aquí como una forma de resistencia y de reivindicación de la importancia del 'papel de la mujer' y la 'lucha por la vida'. La tercera y última parte del trabajo parte analiza la práctica concreta y cotidiana de la Farmacinha de la Solidão, cuyas actividades acompaño desde 2012. Si bien estas actividades se refieren en gran parte a la elaboración de remedios con plantas medicinales, la perspectiva aquí adoptada hace que percibamos la Farmacinha como un lugar donde lo cotidiano y lo personal se tornan políticos y enfrentan el modelo, que se pretende hegemónico, de desarrollo.

Die Anforderungen, in vielen Bereichen des Maschinen- und Anlagenbaus immer mehr Leichtbaumaßnahmen zu realisieren, steigen ständig weiter an. Die Umsetzung von Leichtbaukonzepten wird durch den Einsatz neu entwickelter Werkstoffe und Werkstoffsubstitution realisiert. Es steht fest, dass die herkömmlichen Technologien eine weitere Steigerung der Leichtbaupotentiale nicht mehr gewährleisten können. In der vorliegenden Arbeit wurden neue innovative Fertigungstechnologien zur Herstellung von hohlen, MMC und damit massereduzierten Bauteilen entwickelt, die in der Kraftfahrzeugtechnik, Wärmetechnik und Medizin sowie im Maschinenbau Anwendung finden können. Die neuen Gießverfahren beinhalten Fertigungsmethoden auf der Basis des bekannten Niederdruckgießens durch gesteuerte Formfüllung und definierte Abkühlungsbedingungen.

Submitted by Maike Costa (maiksebas@gmail.com) on 2017-05-23T14:51:55Z No. of bitstreams: 1 arquivototal.pdf: 7468223 bytes, checksum: d6989870b5f353c5592a40ac6ebb0333 (MD5) / Made available in DSpace on 2017-05-23T14:51:55Z (GMT). No. of bitstreams: 1 arquivototal.pdf: 7468223 bytes, checksum: d6989870b5f353c5592a40ac6ebb0333 (MD5) Previous issue date: 2016-05-07 / For many years the power transmission and movement for gears has been an important technology in the automotive, mechanical and aeronautical industries, justifying the considerable number of research carried out under the quality control of these components. Nowadays, involute profile inspections of cylindrical gears have been carried out using CNC Coordinate Measuring Machines (CMMs) with rotary tables and dedicated measurement software, equipped with contact scanning sensors, Touch Trigger Probes – TTP or non-contact, Laser. However, many companies that manufacture and inspect gears use manual CMMs with point to point sensors, thus being unable to issue the profile deviation report. In respect, the motivation for this research is to develop and validate inspection strategies for determining the Total Profile Deviation (Fα) of spur gears, according to ISO 1328, using of a mathematical tool NURBS (Non-Uniform Rational B-Splines) and CMMs manual. Strategies for changing the NURBS weight parameter wi also were applied to assist in inspection definition procedure, and this is one more degree of freedom. In the first moment, before the execution of experimental procedures, simulations were carried out on a computational system and showed satisfactory results. For the experimental tests, a manual CMM MICRO-HITE 3D model was used with point to point sensor. Simulations and experimental results showed that the NURBS technique contributes to manual CMM application using Touch Trigger Probes in measuring the spur gears involute profile. The experimental results showed the methodology efficacy. / Por muitos anos a transmissão de movimento e de potência por engrenagens tem sido uma tecnologia importante nas indústrias automotiva, mecânica e aeronáutica, justificando assim a considerável quantidade de pesquisas realizadas no âmbito do controle de qualidade destes componentes. Atualmente, inspeções dos perfis evolventes de engrenagens cilíndricas vêm sendo realizadas utilizando Máquinas de Medição por Coordenadas (MMCs) CNC com mesas rotativas e softwares de medição dedicados, equipadas com sensores por contato de escaneamento, do tipo Touch Trigger Probe – TTP, ou sem contato, Laser. Porém, muitas empresas que fabricam e inspecionam engrenagens utilizam MMCs manuais com sensores do tipo ponto a ponto, ficando assim impossibilitadas de emitir o relatório de desvio de perfil. Neste sentido, a motivação para esta pesquisa é desenvolver e validar estratégias de inspeção para determinação do Desvio Total de Perfil (Fα) de engrenagens cilíndrica de dentes retos, segundo a norma ISO 1328, fazendo o uso da ferramenta matemática NURBS (Non – Uniform Rational B-Splines) e de MMCs manuais. Estratégias para alteração do parâmetro peso wi das NURBS também serão aplicadas para auxiliar na definição do procedimento de inspeção, sendo este um grau de liberdade a mais do modelo. No primeiro momento, antes da execução dos procedimentos experimentais, simulações foram realizadas em um sistema computacional, e apresentaram resultados satisfatórios. Para os testes experimentais foi utilizada uma MMC manual modelo MICRO-HITE 3D, com sensor do tipo ponto a ponto. Resultados de simulações e experimentais mostraram que a técnica NURBS contribui para aplicação de MMC manual usando sensor Touch Trigger na medição do perfil evolvente de engrenagens cilíndricas de dentes retos. Os resultados experimentais demonstraram a eficácia da metodologia desenvolvida.

A seguinte Dissertação de Mestrado é o resultado de uma etnografia em campo, dentro do Mestrado em Desenvolvimento Rural. A pesquisa centra-se no Movimento das Mulheres Camponesas (MMC) e na Farmacinha Comunitária do vale da Solidão (Maquiné, RS), espaço onde as mulheres se reúnem para elaborar remédios com plantas medicinais. Esta Farmacinha surgiu em 1991, sendo a precursora de mais de 70 experiências similares. Esta dissertação tem como objetivo analisar, sob a ótica da teoria pós-colonial e da pós-modernidade, qual é o modelo de desenvolvimento que estas mulheres propões e constroem, frente a lógica do discurso desenvolvimentista institucional. Para este fim o trabalho divide-se em três partes. A primeira analisa os diferentes discursos de desenvolvimento a respeito da mulher e do rural, para tratar na segunda parte sobre o próprio MMC e seu discurso feminista e de desenvolvimento, percebido aqui como uma forma de resistência e de revindicação da importância do 'papel da mulher' e da 'luta pela vida'. A terceira e última parte do trabalho analisa as práticas concretas e cotidianas da Farmacinha da Solidão, cujas atividades vêm sendo acompanhadas desde 2012. Se bem estas atividades referem-se em grande parte à elaboração de remédios com plantas medicinais, a perspectiva aqui adotada faz com que percebamos a Farmacinha como um lugar onde o cotidiano e o pessoal tornam-se políticos e enfrentam o modelo, que pretende-se hegemônico, de desenvolvimento. / The following Master' s thesis is the result of an ethnography in the field, within the Masters in Rural Development. The research focuses on de “Movimento das Mulheres Camponesas” (Movement of the Peasant Women, MMC), and the “Farmacinha Comunitária” from the valley of Solidão (Maquiné, RS), space where women come together to develop drugs with medicinal plants. This “Farmacinha” appeared in 1991, being the precursor of more than 7 similar experiences. This thesis aims to analyze, from the perspective of post-colonial theory and post-modernism, which is the development model that these women proposes and built, compared to the logic of the institutional development discourse. To this end, the thesis is divides into three parts. The first one analyzes the different discourses about development about women and rural, and explores in the second one the MMC itself ans its feminist and development discourse, perceived here as a form of resistance and a claim of the importance of 'women's role' and the 'struggle for life'. The third and final part analyzes the practical and everyday practices of the “Farmacinha” from Solidão, whose activities have been followed since 2012. Although these activities relate largely to the development of drugs with medicinal plants , the perspective adopted here makes we realize the “Farmacinha” as a place where the everyday and the personal become politics and face the model, which aims to be hegemonic, of development. / El siguiente trabajo es el resultado de una etnografía en campo, dentro de la Maestría en Desarrollo Rural. La investigación se centra en el Movimiento de las Mujeres Campesinas (MMC) y en la Farmacinha Comunitaria del valle de la Solidão, (Maquiné, RS), espacio donde las mujeres se reúnen para elaborar remedios con plantas medicinales. Esta Farmacinha surgió en 1991, siendo precursora de más de 70 experiencias similares. Esta disertación tiene como objetivo analizar, bajo la óptica de la teoría pos-colonial y de la pos-modernidad, cuál es el modelo de desarrollo que estas mujeres proponen y construyen frente a la lógica del discurso desarrollista institucional. Para este fin el trabajo se divide en tres partes. La primera analiza los diferentes discursos del desarrollo con respecto a la mujer y la medio rural, para tratar en la segunda parte sobre el propio MMC y su discurso feminista y de desarrollo, percibido aquí como una forma de resistencia y de reivindicación de la importancia del 'papel de la mujer' y la 'lucha por la vida'. La tercera y última parte del trabajo parte analiza la práctica concreta y cotidiana de la Farmacinha de la Solidão, cuyas actividades acompaño desde 2012. Si bien estas actividades se refieren en gran parte a la elaboración de remedios con plantas medicinales, la perspectiva aquí adoptada hace que percibamos la Farmacinha como un lugar donde lo cotidiano y lo personal se tornan políticos y enfrentan el modelo, que se pretende hegemónico, de desarrollo.

A seguinte Dissertação de Mestrado é o resultado de uma etnografia em campo, dentro do Mestrado em Desenvolvimento Rural. A pesquisa centra-se no Movimento das Mulheres Camponesas (MMC) e na Farmacinha Comunitária do vale da Solidão (Maquiné, RS), espaço onde as mulheres se reúnem para elaborar remédios com plantas medicinais. Esta Farmacinha surgiu em 1991, sendo a precursora de mais de 70 experiências similares. Esta dissertação tem como objetivo analisar, sob a ótica da teoria pós-colonial e da pós-modernidade, qual é o modelo de desenvolvimento que estas mulheres propões e constroem, frente a lógica do discurso desenvolvimentista institucional. Para este fim o trabalho divide-se em três partes. A primeira analisa os diferentes discursos de desenvolvimento a respeito da mulher e do rural, para tratar na segunda parte sobre o próprio MMC e seu discurso feminista e de desenvolvimento, percebido aqui como uma forma de resistência e de revindicação da importância do 'papel da mulher' e da 'luta pela vida'. A terceira e última parte do trabalho analisa as práticas concretas e cotidianas da Farmacinha da Solidão, cujas atividades vêm sendo acompanhadas desde 2012. Se bem estas atividades referem-se em grande parte à elaboração de remédios com plantas medicinais, a perspectiva aqui adotada faz com que percebamos a Farmacinha como um lugar onde o cotidiano e o pessoal tornam-se políticos e enfrentam o modelo, que pretende-se hegemônico, de desenvolvimento. / The following Master' s thesis is the result of an ethnography in the field, within the Masters in Rural Development. The research focuses on de “Movimento das Mulheres Camponesas” (Movement of the Peasant Women, MMC), and the “Farmacinha Comunitária” from the valley of Solidão (Maquiné, RS), space where women come together to develop drugs with medicinal plants. This “Farmacinha” appeared in 1991, being the precursor of more than 7 similar experiences. This thesis aims to analyze, from the perspective of post-colonial theory and post-modernism, which is the development model that these women proposes and built, compared to the logic of the institutional development discourse. To this end, the thesis is divides into three parts. The first one analyzes the different discourses about development about women and rural, and explores in the second one the MMC itself ans its feminist and development discourse, perceived here as a form of resistance and a claim of the importance of 'women's role' and the 'struggle for life'. The third and final part analyzes the practical and everyday practices of the “Farmacinha” from Solidão, whose activities have been followed since 2012. Although these activities relate largely to the development of drugs with medicinal plants , the perspective adopted here makes we realize the “Farmacinha” as a place where the everyday and the personal become politics and face the model, which aims to be hegemonic, of development. / El siguiente trabajo es el resultado de una etnografía en campo, dentro de la Maestría en Desarrollo Rural. La investigación se centra en el Movimiento de las Mujeres Campesinas (MMC) y en la Farmacinha Comunitaria del valle de la Solidão, (Maquiné, RS), espacio donde las mujeres se reúnen para elaborar remedios con plantas medicinales. Esta Farmacinha surgió en 1991, siendo precursora de más de 70 experiencias similares. Esta disertación tiene como objetivo analizar, bajo la óptica de la teoría pos-colonial y de la pos-modernidad, cuál es el modelo de desarrollo que estas mujeres proponen y construyen frente a la lógica del discurso desarrollista institucional. Para este fin el trabajo se divide en tres partes. La primera analiza los diferentes discursos del desarrollo con respecto a la mujer y la medio rural, para tratar en la segunda parte sobre el propio MMC y su discurso feminista y de desarrollo, percibido aquí como una forma de resistencia y de reivindicación de la importancia del 'papel de la mujer' y la 'lucha por la vida'. La tercera y última parte del trabajo parte analiza la práctica concreta y cotidiana de la Farmacinha de la Solidão, cuyas actividades acompaño desde 2012. Si bien estas actividades se refieren en gran parte a la elaboración de remedios con plantas medicinales, la perspectiva aquí adoptada hace que percibamos la Farmacinha como un lugar donde lo cotidiano y lo personal se tornan políticos y enfrentan el modelo, que se pretende hegemónico, de desarrollo.