subject:(Multi Stress)

1. Touzy, Gaëtan. Analyse génétique et écophysiologique de la tolérance à la sècheresse et au stress thermique chez le blé tendre (T. Aestivum L.) : Genetic and ecophysiological analyses of tolerance to drought and high temperature in bread wheat (Triticum aestivum L.).

Degree: Docteur es, Biologie Végétale, 2019, Clermont Auvergne

URL: http://www.theses.fr/2019CLFAC011

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Dans un contexte de changement climatique, la caractérisation des variétés de blé tendre en réponse à des évènements de sécheresse et de stress thermique est… (more)

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Dans un contexte de changement climatique, la caractérisation des variétés de blé tendre en réponse à des évènements de sécheresse et de stress thermique est un des défis de l’agriculture. Cette thèse, issue d’un partenariat -public entre Arvalis-Institut du Végétal, Biogemma et l’INRA (Institut National de la Recherche Agronomique), avait pour but de développer des connaissances et des outils nécessaires à l’identification de variétés tolérantes à la sécheresse et au stress thermique et à la création de variétés répondant à cette exigence. Pour ce faire, nous avons analysé un panel de 220 variétés commerciales, génotypées avec 280K SNP et testées dans 35 environnements variés (combinaison d’année, lieu et régime hydrique), plus une expérimentation en conditions contrôlées où un stress thermique a été appliqué pendant le remplissage du grain. La complexité de l’étude de la tolérance à la sécheresse nous a conduit à présenter cette thèse en séparant, dans un premier temps, l’étude des stress hydriques et thermiques, puis de prospecter une méthode d’analyse multi-stress. Nous avons montré que même si la sélection a amélioré la performance des variétés en condition hydrique optimale, le progrès génétique doit être accéléré et mieux réparti en fonction des différents types de stress. Nous proposons pour cela plusieurs déterminants génétiques qui pourraient permettre un gain dans des environnements stressants. Nos résultats et méthodes sont discutés au regard des besoins en préconisation et amélioration variétale. Des pistes de recherche complémentaires et des améliorations ont aussi été suggérées.

In a context of climate change, the characterization of wheat varieties in response to drought and heat stress events is one of the major challenges of agriculture. This PhD thesis, resulting from a private-public partnership between Arvalis ‘Institut du Végétal’, Biogemma and INRA (“Institut National de la Recherche Agronomique”), aimed at providing necessary knowledge and tools to identify drought or heat-tolerant varieties and breed for varieties that meet these requirements. Analyses were conducted using a panel of 220 commercial varieties, genotyped with 280K SNP and tested in 35 environments (combination of year, location and water regime) and an experiment under controlled conditions where heat stress was applied during grain filling. The complexity of the study of drought and heat tolerance led us to present this thesis by first separating hydric and thermal stresses, and then to explore a multi-stress analysis method. Even if breeding has improved the performance of varieties under optimal water conditions, we showed that genetic progress must be accelerated and better distributed according to different stress scenarios. We propose several genetic determinants that could allow genetic gain in stressful environments. Our results and methods are discussed in view of the needs for varietal recommendation and improvement. Additional research strategies and methods improvements were also suggested.

Advisors/Committee Members: Praud, Sébastien (thesis director), Le Gouis, Jacques (thesis director).

Subjects/Keywords: Analyse multi-stress; Génétiques d’association; Progrès génétique; Stress hydrique et thermique; Multi-stress analysis; Genome Wide Association Studies; Genetic progress; Drought stress

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Touzy, G. (2019). Analyse génétique et écophysiologique de la tolérance à la sècheresse et au stress thermique chez le blé tendre (T. Aestivum L.) : Genetic and ecophysiological analyses of tolerance to drought and high temperature in bread wheat (Triticum aestivum L.). (Doctoral Dissertation). Clermont Auvergne. Retrieved from http://www.theses.fr/2019CLFAC011

Chicago Manual of Style (16^th Edition):

Touzy, Gaëtan. “Analyse génétique et écophysiologique de la tolérance à la sècheresse et au stress thermique chez le blé tendre (T. Aestivum L.) : Genetic and ecophysiological analyses of tolerance to drought and high temperature in bread wheat (Triticum aestivum L.).” 2019. Doctoral Dissertation, Clermont Auvergne. Accessed January 26, 2021. http://www.theses.fr/2019CLFAC011.

MLA Handbook (7^th Edition):

Touzy, Gaëtan. “Analyse génétique et écophysiologique de la tolérance à la sècheresse et au stress thermique chez le blé tendre (T. Aestivum L.) : Genetic and ecophysiological analyses of tolerance to drought and high temperature in bread wheat (Triticum aestivum L.).” 2019. Web. 26 Jan 2021.

Vancouver:

Touzy G. Analyse génétique et écophysiologique de la tolérance à la sècheresse et au stress thermique chez le blé tendre (T. Aestivum L.) : Genetic and ecophysiological analyses of tolerance to drought and high temperature in bread wheat (Triticum aestivum L.). [Internet] [Doctoral dissertation]. Clermont Auvergne; 2019. [cited 2021 Jan 26]. Available from: http://www.theses.fr/2019CLFAC011.

Council of Science Editors:

Touzy G. Analyse génétique et écophysiologique de la tolérance à la sècheresse et au stress thermique chez le blé tendre (T. Aestivum L.) : Genetic and ecophysiological analyses of tolerance to drought and high temperature in bread wheat (Triticum aestivum L.). [Doctoral Dissertation]. Clermont Auvergne; 2019. Available from: http://www.theses.fr/2019CLFAC011

North-West University

2. Sekhoetsane, Khepe Richard. The stress of teenage motherhood : the need for multi-faceted intervention programs / Khepe Richard Sekhoetsane .

Degree: 2012, North-West University

URL: http://hdl.handle.net/10394/10117

► The purpose of this study is to investigate the stress experienced by teenage mothers attending school and the need for multi-faced and strength-based stress management… (more)

Subjects/Keywords: Stress; Teenage motherhood; Multi-faceted intervention programs; Stress management program; Program evaluation; Teenager

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APA (6^th Edition):

Sekhoetsane, K. R. (2012). The stress of teenage motherhood : the need for multi-faceted intervention programs / Khepe Richard Sekhoetsane . (Thesis). North-West University. Retrieved from http://hdl.handle.net/10394/10117

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Sekhoetsane, Khepe Richard. “The stress of teenage motherhood : the need for multi-faceted intervention programs / Khepe Richard Sekhoetsane .” 2012. Thesis, North-West University. Accessed January 26, 2021. http://hdl.handle.net/10394/10117.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Sekhoetsane, Khepe Richard. “The stress of teenage motherhood : the need for multi-faceted intervention programs / Khepe Richard Sekhoetsane .” 2012. Web. 26 Jan 2021.

Vancouver:

Sekhoetsane KR. The stress of teenage motherhood : the need for multi-faceted intervention programs / Khepe Richard Sekhoetsane . [Internet] [Thesis]. North-West University; 2012. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/10394/10117.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Sekhoetsane KR. The stress of teenage motherhood : the need for multi-faceted intervention programs / Khepe Richard Sekhoetsane . [Thesis]. North-West University; 2012. Available from: http://hdl.handle.net/10394/10117

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Baylor University

3. Sang, Joseph Kipyegon. A semi-empirical model to predict erosion rate of cohesive soil, determination of critical shear stress of non-cohesive soils, and field prediction of watershed erosion rate under drought and low data conditions.

Degree: PhD, Baylor University. Dept. of Geology., 2015, Baylor University

URL: http://hdl.handle.net/2104/9571

► Prediction of critical shear stress and determination of erosion rate due to concentrated flow plays a significant role in sustainability of engineering structures and watersheds… (more)

▼ Prediction of critical shear stress and determination of erosion rate due to concentrated flow plays a significant role in sustainability of engineering structures and watersheds management. Critical shear stress of a soil marks the onset of erosion and unless the hydraulic shear stress exceeds it erosion won't occur. Determination of critical shear stress finds application in construction of engineering structures and use of various hydrological models in evaluation of watershed management strategies. Given this importance, it is significant to improve further on the existing methods. This dissertation developed a semi-empirical model to predict erosion rate of cohesive soil using Turbulent Kinetic Energy (TKE), and applied Soil and Water Assessment Tool (SWAT) in assessment watershed erosion rates. The main questions addressed in this study were (1) is semi-empirical model a better predictor of erosion rates of cohesive soil? (2) is TKE a better predictor of critical shear stress?, and (3) can multi-year drought sediment yield dynamics be simulated under low data conditions? The adopted methodology involved laboratory experimentation using a direct tensile apparatus, Jet Erosion Test (JET) apparatus, MicroADV, and simulation studies. After the introductory chapter, the results of developing the semi-empirical model are given in Chapter Two. The results showed that the model output were comparable to those predicted by an existing model. In addition, the results showed that moisture content significantly influenced the soil erodibility characteristics of cohesive soils. In Chapter Three results of determining soil erodibility using TKE and JET apparatus for non-cohesive soil is presented. The result of the study showed that TKE is a better predictor of critical shear stress of non-cohesive than published methods. Furthermore, the use of the JET apparatus provides a fast and easier approach to determining critical shear stress of complex flows. In Chapter Four, the results of applying SWAT to simulate the impact of multi-year drought under low data conditions in two basins in the Edwards Plateaus, Texas, are presented. Scenario analysis showed that in a multiyear drought maintenance of cover is an important part of strategy to reduce erosion rates. Finally, Chapter Five presents a summary and conclusion of the research. Advisors/Committee Members: Allen, Peter M., 1947- (advisor).

Subjects/Keywords: Erosion rate. Critical shear stress. Multi-year drought. SWAT. Reservoir sedimentation.

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Sang, J. K. (2015). A semi-empirical model to predict erosion rate of cohesive soil, determination of critical shear stress of non-cohesive soils, and field prediction of watershed erosion rate under drought and low data conditions. (Doctoral Dissertation). Baylor University. Retrieved from http://hdl.handle.net/2104/9571

Chicago Manual of Style (16^th Edition):

Sang, Joseph Kipyegon. “A semi-empirical model to predict erosion rate of cohesive soil, determination of critical shear stress of non-cohesive soils, and field prediction of watershed erosion rate under drought and low data conditions.” 2015. Doctoral Dissertation, Baylor University. Accessed January 26, 2021. http://hdl.handle.net/2104/9571.

MLA Handbook (7^th Edition):

Sang, Joseph Kipyegon. “A semi-empirical model to predict erosion rate of cohesive soil, determination of critical shear stress of non-cohesive soils, and field prediction of watershed erosion rate under drought and low data conditions.” 2015. Web. 26 Jan 2021.

Vancouver:

Sang JK. A semi-empirical model to predict erosion rate of cohesive soil, determination of critical shear stress of non-cohesive soils, and field prediction of watershed erosion rate under drought and low data conditions. [Internet] [Doctoral dissertation]. Baylor University; 2015. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/2104/9571.

Council of Science Editors:

Sang JK. A semi-empirical model to predict erosion rate of cohesive soil, determination of critical shear stress of non-cohesive soils, and field prediction of watershed erosion rate under drought and low data conditions. [Doctoral Dissertation]. Baylor University; 2015. Available from: http://hdl.handle.net/2104/9571

4. Pelvillain, Cyril. Système d'encapsulation multicouche pour la gradation de potentiel dans les modules de puissance : apport des matériaux nanocomposites à conductivité contrôlée : System of encapsulation multilayerfor the stress grading in power module : contribution of nanocomposite materials with controlled conductivity.

Degree: Docteur es, Génie électrique, 2017, Université Toulouse III – Paul Sabatier

URL: http://www.theses.fr/2017TOU30221

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De nos jours, une gestion optimale de l'énergie électrique est devenue un enjeu majeur. La conversion de l'énergie entre une source et sa charge est… (more)

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De nos jours, une gestion optimale de l'énergie électrique est devenue un enjeu majeur. La conversion de l'énergie entre une source et sa charge est réalisée par un élément central : le convertisseur statique utilisé aussi bien pour des faibles puissances (quelques Watts) que pour des très fortes (plusieurs MWatt). La brique élémentaire est la cellule de commutation constituée de semi-conducteurs de puissance (à commutation commandée ou spontanée) généralement réunis au sein d'un " module de puissance ". La nécessaire réduction des volumes dans certaines applications (comme les systèmes embarqués par exemple) ainsi que l'augmentation des calibres de tensions des nouveaux semi- conducteurs grands gaps auront comme conséquence directe d'augmenter les contraintes sur les systèmes d'isolation des convertisseurs. Une répartition contrôlée de ces contraintes dans le volume présente alors un intérêt pour maintenir la fiabilité du système d'isolation. Il est donc nécessaire d'effectuer une caractérisation la plus large possible de l'ensemble des matériaux isolants utilisés dans le packaging des dits " modules de puissance ", ainsi qu'une bonne compréhension de leurs mécanismes de défaillances. Le travail présenté ici consiste en l'étude d'une nouvelle stratégie de répartition du potentiel dans le volume appelée gradation de potentiel. L'isolation de volume développée est un assemblage multicouche constitué d'un matériau à conductivité contrôlée (Epoxy/Graphene) jouant le rôle de gradateur et d'une fine couche isolante (parylène) assurant la tenue en tension. Différents outils, tant théoriques (simulation) qu'expérimentaux, ont été ainsi utilisés pour aider au dimensionnent du système d'isolation électrique. La modélisation par la méthode des éléments finis (MEF) permet-elle de prédéterminer la répartition de la contrainte (potentiel et champ électrique) dans une structure de test prédéfini ou de décrire l'étude de l'influence de la conductivité du matériau gradateur et de l'épaisseur du film sur la répartition des équipotentielles. D'un point de vue expérimental le film sélectionné a été caractérisé pour des épaisseurs comprises entre 10 et 40 µm. Le matériau à conductivité contrôlée a été ensuite élaboré puis caractérisé pour différents taux de chargement. Après l'incorporation du système d'isolation dans différentes structures tests (substrats métallisés et structure double face), différentes méthodes permettant de caractériser le système d'isolation ont été utilisées qu'il s'agisse de mesures directes de la contrainte électrique par sonde à champ nul (potentiel de surface) ou indirectes par des mesures de décharges partielles. L'isolation multi-couches présente des améliorations dans la répartition du potentiel mais aussi des limites d'utilisation en fonction de la conductivité du matériau gradateur. Cette isolation doit donc être dimensionnée au plus près des caractéristiques d'utilisation et offre une approche intéressante pour le dimensionnement des modules de puissances double face.

Nowadays, an optimal management…

Advisors/Committee Members: Lebey, Thierry (thesis director), Valdez Nava, Zarel (thesis director), Diaham, Sombel (thesis director).

Subjects/Keywords: Multi-couches; Gradation de potentiel; Graphène; Module de puissance; Encapsulation; Parylène; Multi-layers; Stress grading; Graphene; Power module; Parylene

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Pelvillain, C. (2017). Système d'encapsulation multicouche pour la gradation de potentiel dans les modules de puissance : apport des matériaux nanocomposites à conductivité contrôlée : System of encapsulation multilayerfor the stress grading in power module : contribution of nanocomposite materials with controlled conductivity. (Doctoral Dissertation). Université Toulouse III – Paul Sabatier. Retrieved from http://www.theses.fr/2017TOU30221

Chicago Manual of Style (16^th Edition):

Pelvillain, Cyril. “Système d'encapsulation multicouche pour la gradation de potentiel dans les modules de puissance : apport des matériaux nanocomposites à conductivité contrôlée : System of encapsulation multilayerfor the stress grading in power module : contribution of nanocomposite materials with controlled conductivity.” 2017. Doctoral Dissertation, Université Toulouse III – Paul Sabatier. Accessed January 26, 2021. http://www.theses.fr/2017TOU30221.

MLA Handbook (7^th Edition):

Pelvillain, Cyril. “Système d'encapsulation multicouche pour la gradation de potentiel dans les modules de puissance : apport des matériaux nanocomposites à conductivité contrôlée : System of encapsulation multilayerfor the stress grading in power module : contribution of nanocomposite materials with controlled conductivity.” 2017. Web. 26 Jan 2021.

Vancouver:

Pelvillain C. Système d'encapsulation multicouche pour la gradation de potentiel dans les modules de puissance : apport des matériaux nanocomposites à conductivité contrôlée : System of encapsulation multilayerfor the stress grading in power module : contribution of nanocomposite materials with controlled conductivity. [Internet] [Doctoral dissertation]. Université Toulouse III – Paul Sabatier; 2017. [cited 2021 Jan 26]. Available from: http://www.theses.fr/2017TOU30221.

Council of Science Editors:

Pelvillain C. Système d'encapsulation multicouche pour la gradation de potentiel dans les modules de puissance : apport des matériaux nanocomposites à conductivité contrôlée : System of encapsulation multilayerfor the stress grading in power module : contribution of nanocomposite materials with controlled conductivity. [Doctoral Dissertation]. Université Toulouse III – Paul Sabatier; 2017. Available from: http://www.theses.fr/2017TOU30221

5. Bouain, Nadia. Etude des interactions entre métaux lourds et phosphate chez les plantes : aspects physiologiques et moléculaires : Sudy of interactions between heavy metals and phosphate homeostasis in plants : physiological and molecular basis.

Degree: Docteur es, BIDAP - Biologie, Interactions, Diversité Adaptative des Plantes, 2016, Montpellier, SupAgro

URL: http://www.theses.fr/2016NSAM0008

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Durant cette dernière décennie, plusieurs voies de régulation de l’homéostasie de différents ions ont été identifiées chez les plantes. Le croisement des données de la… (more)

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Durant cette dernière décennie, plusieurs voies de régulation de l’homéostasie de différents ions ont été identifiées chez les plantes. Le croisement des données de la littérature révèle l’existence de connexions insoupçonnées entre ces différentes voies de régulation, limitant ainsi les perspectives d’apporter des solutions adaptées pour chaque élément. En effet, la carence ou l’excès en un seul élément cause une profonde perturbation de l’homéostasie des autres éléments associés. Un exemple frappant illustrant l’interconnexion entre l’homéostasie des ions est celui qui concerne le phosphate inorganique (Pi), le zinc (Zn) et le fer (Fe). Dans ce contexte, l’objectif de mon travail de thèse est de mieux comprendre les bases physiologiques et moléculaires de l’interaction entre le Pi, le Zn et le Fe chez les plantes. Trois plantes ont été utilisées dans ce travail : la plante modèle Arabidopsis thaliana, et deux plantes d’intérêt agronomique, la laitue (Lactuca sativa) et le riz (Oryza sativa L.). Chez la laitue, mes résultats montrent l’existence d’une base génétique pour la co-régulation de l’homéostasie du Pi et de celle du Zn chez les deux variétés de laitue utilisées, toute en y révélant un comportement contrasté. Chez le riz, j’ai prouvé également l’existence d'une base génétique pour les interactions non seulement entre les homéostasies du Pi, et celle du Zn et mais aussi avec celle du Fe, et j'ai démontré un rôle important du transporteur du Pi OsPHO1;1 dans ce processus. Enfin, en utilisant l’approche de génétique d’association, de nouveaux gènes impliqués dans les interactions homéostatiques Pi-Zn ont été caractérisés chez Arabidopsis.

Plants require a variety of elements for their basic biological functions. Interestingly, Transport, assimilation and utilization of these nutrients are not independent of another. However, the biological significance, molecular and genetic bases of these dependencies are not well understood. We use the over-accumulation of inorganic phosphate (Pi) in plants under zinc (Zn) deficiency as an example to dissect a fundamentally and agronomically important Pi-Zn interdependency in Lettuce, rice and Arabidopsis plants. We described the physiological and molecular basis of the interaction between Pi and Zn homeostasis. In Lettuce, we revealed a contrasting behavior between the two lettuce varieties in terms of the coregulation of Pi and Zn homeostasis. In rice, our data reveal coordination between pathways involved in Fe transport and PiZn signaling, which involves the OsPHO1; 1. In Arabidopsis, we discovred a new mecanism that plants use to gate defense and growth process in Pi-Zn dependant manner.

Advisors/Committee Members: Rouached, Hatem (thesis director), Abdelly, Chedly (thesis director).

Subjects/Keywords: Homéostasie; Phosphate; Métaux lourds; Zinc; Signalisation; Multiple stress; Homeostasis; Phosphate; Heavy metals; Zinc; Signaling; Multi-Stress

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Bouain, N. (2016). Etude des interactions entre métaux lourds et phosphate chez les plantes : aspects physiologiques et moléculaires : Sudy of interactions between heavy metals and phosphate homeostasis in plants : physiological and molecular basis. (Doctoral Dissertation). Montpellier, SupAgro. Retrieved from http://www.theses.fr/2016NSAM0008

Chicago Manual of Style (16^th Edition):

Bouain, Nadia. “Etude des interactions entre métaux lourds et phosphate chez les plantes : aspects physiologiques et moléculaires : Sudy of interactions between heavy metals and phosphate homeostasis in plants : physiological and molecular basis.” 2016. Doctoral Dissertation, Montpellier, SupAgro. Accessed January 26, 2021. http://www.theses.fr/2016NSAM0008.

MLA Handbook (7^th Edition):

Bouain, Nadia. “Etude des interactions entre métaux lourds et phosphate chez les plantes : aspects physiologiques et moléculaires : Sudy of interactions between heavy metals and phosphate homeostasis in plants : physiological and molecular basis.” 2016. Web. 26 Jan 2021.

Vancouver:

Bouain N. Etude des interactions entre métaux lourds et phosphate chez les plantes : aspects physiologiques et moléculaires : Sudy of interactions between heavy metals and phosphate homeostasis in plants : physiological and molecular basis. [Internet] [Doctoral dissertation]. Montpellier, SupAgro; 2016. [cited 2021 Jan 26]. Available from: http://www.theses.fr/2016NSAM0008.

Council of Science Editors:

Bouain N. Etude des interactions entre métaux lourds et phosphate chez les plantes : aspects physiologiques et moléculaires : Sudy of interactions between heavy metals and phosphate homeostasis in plants : physiological and molecular basis. [Doctoral Dissertation]. Montpellier, SupAgro; 2016. Available from: http://www.theses.fr/2016NSAM0008

6. Boukadida Ammar, Khouloud. Etude des réponses de la moule Mytilus spp exposée à des stress métallique et thermique durant les stades embryo-larvaires : Study of responses of the mussel Mytilus spp exposed to metallic and thermal stresses during the embryo-larval stages.

Degree: Docteur es, Géochimie et écotoxicologie, 2017, Bordeaux; Université de Monastir (Tunisie)

URL: http://www.theses.fr/2017BORD0571

► Les écosystèmes marins côtiers sont soumis à des pressions anthropiques et naturelles qui placent les organismes aquatiques dans des situations de multi-stress.Ce travail doctoral avait… (more)

▼ Les écosystèmes marins côtiers sont soumis à des pressions anthropiques et naturelles qui placent les organismes aquatiques dans des situations de multi-stress.Ce travail doctoral avait pour objectif d’évaluer l’impact et de mieux comprendre les mécanismes d’adaptation des premiers stades de vie de moule exposés à deux facteurs environnementaux majeurs : la pollution métallique et l’accroissement des températures des eaux marines côtières. Les effets induits par l’exposition à deux polluants métalliques modèles (Cu et Ag) et à un stress thermique modéré seuls ou en combinaison ont été évalués sur les stades précoces de développement de deux espèces de moule : Mytilus galloprovincialis et Mytilus edulis ainsi que leurs hybrides. Nos résultats montrent une augmentation significative du pourcentage de larves D ma lformées avec l’augmentation de la température. Par ailleurs, l’Ag apparaît significativement plus toxique que le Cu pour les larves. De plus,la toxicité des métaux s’accroit avec l’augmentation de la température. La coexposition aux métaux et à une température modérée augmente les activités enzymatiques antioxydantes de la catalase (CAT), de la superoxyde dismutase (SOD)et de la glutathion-S-transférase (GST) et accroît le contenu cellulaire en métallothionéines et la peroxydation lipidique. A une température plus élevée de 22 °C,une diminution significative des activités des enzymes antioxydantes est observée.Les dommages à l’ADN chez les larves-D de moule M. gallo provincialis ont été évalués à l’aide du test des comètes avec et sans traitement par la Formamidopyrimidine ADN glycosylase. L’exposition aux métaux et/ou à la température aaugmenté de manière significative les lésions de l’ADN sur les larves de moule,avec un effet plus accentué sur les dommages oxydatifs. Il a été montré également que le Cu et l’Ag sont accumulés différentiellement dans les larves en fonction de la température d’exposition. L’étude de l’expression par RT-qPCR de 18 gènes impliqués dans les défenses antioxydantes, la réparation de l’ADN, l’apoptose,la protéolyse, la transcription, les réponses au stress thermique et la détoxification métallique a été conduite chez les larves-D de moule M. galloprovincialis.En cas d’un stress thermique modéré, une tendance à la surexpression des gènes impliqués dans les défenses cellulaires est observée. Toutefois, en cas d’une coexposition métallique et thermique, les voies d’apoptose et d’altération cellulaires sont activées.Un plugin et une macro ont été développés pour le logiciel ImageJ afin d’évaluer et de caractériser le comportement de nage des larves D de M. galloprovincialis.Une augmentation significative de la vitesse maximale des larves-Davec l’augmentation de la température est observée sans que la vitesse moyenne soit affectée. En revanche, l’exposition au Cu et à l’Ag à 22 °C augmente significativement les vitesses moyenne et maximale des larves. En condition contrôle à18 °C, les larves suivent principalement des trajectoires rectilignes (88 %). Avec l’augmentation de la température… Advisors/Committee Members: Cachot, Jérôme (thesis director), Banni, Mohamed (thesis director).

Subjects/Keywords: Réchauffement climatique; Pollution métallique; Multi-stress; Stades embryo-larvaire; Mytilus spp; Hybridation; Global Warming; Metallic pollution; Multi-Stress; Embryo-larval stages; Mytilus spp; Hybridization

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Boukadida Ammar, K. (2017). Etude des réponses de la moule Mytilus spp exposée à des stress métallique et thermique durant les stades embryo-larvaires : Study of responses of the mussel Mytilus spp exposed to metallic and thermal stresses during the embryo-larval stages. (Doctoral Dissertation). Bordeaux; Université de Monastir (Tunisie). Retrieved from http://www.theses.fr/2017BORD0571

Chicago Manual of Style (16^th Edition):

Boukadida Ammar, Khouloud. “Etude des réponses de la moule Mytilus spp exposée à des stress métallique et thermique durant les stades embryo-larvaires : Study of responses of the mussel Mytilus spp exposed to metallic and thermal stresses during the embryo-larval stages.” 2017. Doctoral Dissertation, Bordeaux; Université de Monastir (Tunisie). Accessed January 26, 2021. http://www.theses.fr/2017BORD0571.

MLA Handbook (7^th Edition):

Boukadida Ammar, Khouloud. “Etude des réponses de la moule Mytilus spp exposée à des stress métallique et thermique durant les stades embryo-larvaires : Study of responses of the mussel Mytilus spp exposed to metallic and thermal stresses during the embryo-larval stages.” 2017. Web. 26 Jan 2021.

Vancouver:

Boukadida Ammar K. Etude des réponses de la moule Mytilus spp exposée à des stress métallique et thermique durant les stades embryo-larvaires : Study of responses of the mussel Mytilus spp exposed to metallic and thermal stresses during the embryo-larval stages. [Internet] [Doctoral dissertation]. Bordeaux; Université de Monastir (Tunisie); 2017. [cited 2021 Jan 26]. Available from: http://www.theses.fr/2017BORD0571.

Council of Science Editors:

Boukadida Ammar K. Etude des réponses de la moule Mytilus spp exposée à des stress métallique et thermique durant les stades embryo-larvaires : Study of responses of the mussel Mytilus spp exposed to metallic and thermal stresses during the embryo-larval stages. [Doctoral Dissertation]. Bordeaux; Université de Monastir (Tunisie); 2017. Available from: http://www.theses.fr/2017BORD0571

7. Gandar, Allison. Réponse aux stress multiples chez les poissons : effets croisés de la température et des cocktails de pesticides : Response on multistress effects on goldfish (carassius auratus).

Degree: Docteur es, Ecologie fonctionnelle, 2015, Université Toulouse III – Paul Sabatier

URL: http://www.theses.fr/2015TOU30310

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Les changements climatiques et l'émission de polluants dans l'environnement sont susceptibles d'entrainer des effets croisés sur les communautés et le fonctionnement des écosystèmes. Les changements… (more)

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Les changements climatiques et l'émission de polluants dans l'environnement sont susceptibles d'entrainer des effets croisés sur les communautés et le fonctionnement des écosystèmes. Les changements de température sont notamment susceptibles de modifier le comportement et la toxicité des polluants, et de sensibiliser les organismes aux stress chimiques. Inversement, l'exposition à des polluants peut diminuer la tolérance thermique des espèces ectothermes comme les poissons. Dans ce contexte, nous avons étudié la réponse d'une espèce modèle de poissons en toxicologie aquatique, le Carassin doré (Carassius auratus), soumis à des stress chimique et thermique individuels et combinés. Pour cela, le carassin doré a été exposé à un cocktail d'herbicides et de fongicides à des concentrations réalistes d'un point de vue environnemental à deux températures pendant 96h ou 16 jours. Les réponses ont été observées de l'échelle moléculaire à l'échelle individuelle par des approches omiques (protéomique et métabolomique), biochimiques (cortisol, biomarqueurs de stress oxydant et allocation cellulaire énergétique), indicielles (indices somatiques et de condition) et comportementales (remaniement sédimentaire, activité, exploration et comportement alimentaire). Les résultats montrent que l'exposition des poissons aux stress chimique et thermique individuels entraine une réponse générale de stress impliquant des compensations biochimiques, énergétiques, physiologiques et comportementales. L'absence d'effets sur la santé générale des carassins suggère la mise en place d'une réponse de stress efficace et adaptée, bien que l'hypoactivité observée chez les poissons exposés aux cocktails de pesticides soit susceptible d'entrainer une diminution de leurs performances et de leur fitness. A l'inverse, les carassins exposés aux stress chimique et thermique combinés montrent une inhibition de la réponse générale de stress, avec des effets antagonistes sur la sécrétion de cortisol, l'induction de certains systèmes de défense antioxydants et la compensation énergétique. Des effets plus importants sont en revanche observés au niveau comportemental ainsi qu'une diminution significative de la condition générale des poissons. Ces résultats montrent que l'augmentation de la température sensibilise les poissons à la contamination de l'eau par les pesticides. L'inhibition de la réponse de stress chez des poissons exposés à des mélanges complexes de pesticides dans un écosystème soumis à de multiples contraintes pose de nombreuses questions pour la conservation des espèces dans l'environnement.

Crossed-effects between climate change and chemical pollutions were identified on community structure and ecosystem functioning. Temperature rising affect the toxic properties of pollutants and the sensitiveness of organisms to chemicals stress. Inversely, chemical exposure may decrease the thermal tolerance of ectothermic species, as fish. In this context, we studied the response of a biological model in aquatic toxicology, the goldfish (Carassius auratus), to…

Advisors/Committee Members: Laffaille, Pascal (thesis director), Jean, Séverine (thesis director).

Subjects/Keywords: Herbicides; Fongicides; Changements climatiques; Réponse de stress; Carassius auratus; Etude multi-échelles; Herbicides; Fungicides; Climate change; Stress response; Carassius auratus; Multi-level study

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Gandar, A. (2015). Réponse aux stress multiples chez les poissons : effets croisés de la température et des cocktails de pesticides : Response on multistress effects on goldfish (carassius auratus). (Doctoral Dissertation). Université Toulouse III – Paul Sabatier. Retrieved from http://www.theses.fr/2015TOU30310

Chicago Manual of Style (16^th Edition):

Gandar, Allison. “Réponse aux stress multiples chez les poissons : effets croisés de la température et des cocktails de pesticides : Response on multistress effects on goldfish (carassius auratus).” 2015. Doctoral Dissertation, Université Toulouse III – Paul Sabatier. Accessed January 26, 2021. http://www.theses.fr/2015TOU30310.

MLA Handbook (7^th Edition):

Gandar, Allison. “Réponse aux stress multiples chez les poissons : effets croisés de la température et des cocktails de pesticides : Response on multistress effects on goldfish (carassius auratus).” 2015. Web. 26 Jan 2021.

Vancouver:

Gandar A. Réponse aux stress multiples chez les poissons : effets croisés de la température et des cocktails de pesticides : Response on multistress effects on goldfish (carassius auratus). [Internet] [Doctoral dissertation]. Université Toulouse III – Paul Sabatier; 2015. [cited 2021 Jan 26]. Available from: http://www.theses.fr/2015TOU30310.

Council of Science Editors:

Gandar A. Réponse aux stress multiples chez les poissons : effets croisés de la température et des cocktails de pesticides : Response on multistress effects on goldfish (carassius auratus). [Doctoral Dissertation]. Université Toulouse III – Paul Sabatier; 2015. Available from: http://www.theses.fr/2015TOU30310

University of Toronto

8. Vani, Madison F. Feeling stressed? Emotions, stress, and the moderating role of physical activity in women treated for breast cancer.

Degree: 2017, University of Toronto

URL: http://hdl.handle.net/1807/79228

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Diagnosis and treatment for cancer may increase experiences of stress among breast cancer survivors (BCS) by sensitizing individuals to changes in body image. Body-related self-… (more)

Subjects/Keywords: breast cancer; emotions; experience sampling; multi-level modeling; physical activity; stress; 0621

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Vani, M. F. (2017). Feeling stressed? Emotions, stress, and the moderating role of physical activity in women treated for breast cancer. (Masters Thesis). University of Toronto. Retrieved from http://hdl.handle.net/1807/79228

Chicago Manual of Style (16^th Edition):

Vani, Madison F. “Feeling stressed? Emotions, stress, and the moderating role of physical activity in women treated for breast cancer.” 2017. Masters Thesis, University of Toronto. Accessed January 26, 2021. http://hdl.handle.net/1807/79228.

MLA Handbook (7^th Edition):

Vani, Madison F. “Feeling stressed? Emotions, stress, and the moderating role of physical activity in women treated for breast cancer.” 2017. Web. 26 Jan 2021.

Vancouver:

Vani MF. Feeling stressed? Emotions, stress, and the moderating role of physical activity in women treated for breast cancer. [Internet] [Masters thesis]. University of Toronto; 2017. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/1807/79228.

Council of Science Editors:

Vani MF. Feeling stressed? Emotions, stress, and the moderating role of physical activity in women treated for breast cancer. [Masters Thesis]. University of Toronto; 2017. Available from: http://hdl.handle.net/1807/79228

University of Notre Dame

9. Jessica M. Blaxton. A Process-Oriented Perspective Examining the Relationships Between Daily Coping, Stress, and Affect</h1>.

Degree: Psychology, 2015, University of Notre Dame

URL: https://curate.nd.edu/show/wh246q20k8k

► We assess the daily relationships between three functional coping strategies and positive and negative affect while accounting for the individual?s cognitive appraisal of their… (more)

Subjects/Keywords: positive affect; longitudinal data analysis; negative affect; stress; multi-level modeling; coping

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APA (6^th Edition):

Blaxton, J. M. (2015). A Process-Oriented Perspective Examining the Relationships Between Daily Coping, Stress, and Affect</h1>. (Thesis). University of Notre Dame. Retrieved from https://curate.nd.edu/show/wh246q20k8k

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Blaxton, Jessica M.. “A Process-Oriented Perspective Examining the Relationships Between Daily Coping, Stress, and Affect</h1>.” 2015. Thesis, University of Notre Dame. Accessed January 26, 2021. https://curate.nd.edu/show/wh246q20k8k.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Blaxton, Jessica M.. “A Process-Oriented Perspective Examining the Relationships Between Daily Coping, Stress, and Affect</h1>.” 2015. Web. 26 Jan 2021.

Vancouver:

Blaxton JM. A Process-Oriented Perspective Examining the Relationships Between Daily Coping, Stress, and Affect</h1>. [Internet] [Thesis]. University of Notre Dame; 2015. [cited 2021 Jan 26]. Available from: https://curate.nd.edu/show/wh246q20k8k.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Blaxton JM. A Process-Oriented Perspective Examining the Relationships Between Daily Coping, Stress, and Affect</h1>. [Thesis]. University of Notre Dame; 2015. Available from: https://curate.nd.edu/show/wh246q20k8k

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Illinois – Urbana-Champaign

10. Mathur, Kapil. Effects of residual stresses and initial imperfections on earthquake response of steel moment frames.

Degree: MS, 0106, 2011, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/24180

► The 2010 AISC Specification establishes the Direct Analysis Method (DM) as the standard stability analysis and design procedure. Although the DM has important benefits over… (more)

Subjects/Keywords: Buildings, multi-story; Steel frames; Structural stability; Seismic design; Dynamic response; Residual stress; Imperfections

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Mathur, K. (2011). Effects of residual stresses and initial imperfections on earthquake response of steel moment frames. (Thesis). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/24180

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Mathur, Kapil. “Effects of residual stresses and initial imperfections on earthquake response of steel moment frames.” 2011. Thesis, University of Illinois – Urbana-Champaign. Accessed January 26, 2021. http://hdl.handle.net/2142/24180.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Mathur, Kapil. “Effects of residual stresses and initial imperfections on earthquake response of steel moment frames.” 2011. Web. 26 Jan 2021.

Vancouver:

Mathur K. Effects of residual stresses and initial imperfections on earthquake response of steel moment frames. [Internet] [Thesis]. University of Illinois – Urbana-Champaign; 2011. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/2142/24180.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Mathur K. Effects of residual stresses and initial imperfections on earthquake response of steel moment frames. [Thesis]. University of Illinois – Urbana-Champaign; 2011. Available from: http://hdl.handle.net/2142/24180

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of New Orleans

11. Boppudi, Srimanth. Further Investigation of a New Traction Stress Based Shear Strength Characterization Method with Test Data.

Degree: MS, Naval Architecture and Marine Engineering, 2014, University of New Orleans

URL: https://scholarworks.uno.edu/td/1847

► In this thesis, a new traction stress based method for characterizing shear strength is investigated by carrying out a series of shear strength tests.… (more)

Subjects/Keywords: shear strength; AWS; traction stress; transverse shear; longitudinal shear; multi-pass welds.

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Boppudi, S. (2014). Further Investigation of a New Traction Stress Based Shear Strength Characterization Method with Test Data. (Thesis). University of New Orleans. Retrieved from https://scholarworks.uno.edu/td/1847

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Boppudi, Srimanth. “Further Investigation of a New Traction Stress Based Shear Strength Characterization Method with Test Data.” 2014. Thesis, University of New Orleans. Accessed January 26, 2021. https://scholarworks.uno.edu/td/1847.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Boppudi, Srimanth. “Further Investigation of a New Traction Stress Based Shear Strength Characterization Method with Test Data.” 2014. Web. 26 Jan 2021.

Vancouver:

Boppudi S. Further Investigation of a New Traction Stress Based Shear Strength Characterization Method with Test Data. [Internet] [Thesis]. University of New Orleans; 2014. [cited 2021 Jan 26]. Available from: https://scholarworks.uno.edu/td/1847.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Boppudi S. Further Investigation of a New Traction Stress Based Shear Strength Characterization Method with Test Data. [Thesis]. University of New Orleans; 2014. Available from: https://scholarworks.uno.edu/td/1847

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

12. Borcier, Elodie. Vulnérabilité de populations de poissons (Platichthys flesus) face aux multi-stress en estuaires : une approche intégrative : Vulnerability of flounder populations (Platichthys flesus) facing to multistress in estuaries : an integrative approach.

Degree: Docteur es, Biologie marine, 2019, Brest

URL: http://www.theses.fr/2019BRES0020

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Le niveau de vulnérabilité de populations naturelles de flet a été abordé dans cette étude, par l’intégration des réponses du poisson aux niveaux moléculaire, individuel… (more)

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Le niveau de vulnérabilité de populations naturelles de flet a été abordé dans cette étude, par l’intégration des réponses du poisson aux niveaux moléculaire, individuel et populationnel. Une approche multi-estuaire est développée ; les réponses du flet sont ainsi mesurées dans des conditions contrastées (stress thermique : estuaire du Mondego ; stress chimique : estuaire de Seine ; faibles niveaux de stress : Baie de Douarnenez, estuaires de Vilaine et Canche). Par une approche démo-génétique basée sur la variabilité des marqueurs microsatellites, nous avons mis en évidence une faible taille efficace de la population du Mondego située en limite Sud de l’aire de distribution, et donc caractérisée par un risque écologique élevé. La population de Seine présente une faible variabilité interindividuelle dans l’expression de différents gènes impliqués dans le métabolisme énergétique (COII, 12S), qui pourrait expliquer son faible potentiel à résister au réchauffement climatique. Cette population montre des signatures d’adaptation face au stress chimique (métabolisme énergétique élevé, gestion du stress oxydant, modification des phospholipides membranaires), engendrant probablement un coût physiologique fort (réduction des réserves énergétiques au niveau musculaire). La population de Seine présente donc un risque écologique élevé. Enfin, un encagement de flet a été mené sur un mois en estuaire de Seine; les réponses du poisson analysées par protéomique shot-gun ont mis en évidence un gradient de pollution décroissant amont-aval, soit une estimation de l’état écologique du système à micro-échelle. Cette thèse a identifié différents outils pertinents pour estimer le niveau de vulnérabilité de populations de flet, et pour explorer l’état écologique des écosystèmes estuariens.

The vulnerability level of natural flounder populations was assessed, integrating responses at the molecular, individual and population levels. A multi-estuary approach was carried out on the fish responses in contrasted environments (thermal stress: Mondego estuary; chemical stress: Seine estuary; moderately stressed systems: Bay of Douarnenez, Vilaine and Canche estuaries).A demo-genetic approach, considering the variability of microsatellites, underlined a reduced effective size for the southern peripheral population of the Mondego estuary, thus characterized by a high ecological risk.In the Seine population, a reduced interindividual variability was observed considering the expression levels of genes involved in bioenergetics (COII, 12S); this pattern could explain the reduced ability of this population to cope with another stress (ie thermal stress).Signatures of adaptation to pollutants (high level of energetic metabolism, management of oxidative stress, modification of membrane phopholipids) were observed in the Seine, but could be very costly (reduced muscle energetic reserve). Thus, we consider that the Seine population is displaying a high ecological risk.A one month fish caging experiment was conducted in the Seine estuary. Fish responses…

Advisors/Committee Members: Laroche, Jean (thesis director).

Subjects/Keywords: Multistress; Taille efficace; Bioénergétique; Protéomique; Biomarqueurs; Estuaires; Multi-stress; Effective size; Bioenergetics; Proteomics; Biomarkers; Estuaries

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Borcier, E. (2019). Vulnérabilité de populations de poissons (Platichthys flesus) face aux multi-stress en estuaires : une approche intégrative : Vulnerability of flounder populations (Platichthys flesus) facing to multistress in estuaries : an integrative approach. (Doctoral Dissertation). Brest. Retrieved from http://www.theses.fr/2019BRES0020

Chicago Manual of Style (16^th Edition):

Borcier, Elodie. “Vulnérabilité de populations de poissons (Platichthys flesus) face aux multi-stress en estuaires : une approche intégrative : Vulnerability of flounder populations (Platichthys flesus) facing to multistress in estuaries : an integrative approach.” 2019. Doctoral Dissertation, Brest. Accessed January 26, 2021. http://www.theses.fr/2019BRES0020.

MLA Handbook (7^th Edition):

Borcier, Elodie. “Vulnérabilité de populations de poissons (Platichthys flesus) face aux multi-stress en estuaires : une approche intégrative : Vulnerability of flounder populations (Platichthys flesus) facing to multistress in estuaries : an integrative approach.” 2019. Web. 26 Jan 2021.

Vancouver:

Borcier E. Vulnérabilité de populations de poissons (Platichthys flesus) face aux multi-stress en estuaires : une approche intégrative : Vulnerability of flounder populations (Platichthys flesus) facing to multistress in estuaries : an integrative approach. [Internet] [Doctoral dissertation]. Brest; 2019. [cited 2021 Jan 26]. Available from: http://www.theses.fr/2019BRES0020.

Council of Science Editors:

Borcier E. Vulnérabilité de populations de poissons (Platichthys flesus) face aux multi-stress en estuaires : une approche intégrative : Vulnerability of flounder populations (Platichthys flesus) facing to multistress in estuaries : an integrative approach. [Doctoral Dissertation]. Brest; 2019. Available from: http://www.theses.fr/2019BRES0020

University of New South Wales

13. Cui, Dandan. Molecular dynamics simulation of nano-milling on copper.

Degree: Mechanical & Manufacturing Engineering, 2014, University of New South Wales

URL: http://handle.unsw.edu.au/1959.4/53642 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12337/SOURCE02?view=true

► Miniaturised ultra-precision components are in great demand in micro/nano electro-mechanical systems, whose surface features are generally intricate and of nanometric dimensions. Since milling has high… (more)

▼ Miniaturised ultra-precision components are in great demand in micro/nano electro-mechanical systems, whose surface features are generally intricate and of nanometric dimensions. Since milling has high machining accuracy, simplicity, environment-friendliness and capability of generating complex and ultra-precision features, nano-milling has been considered a promising technique for efficient fabrications of components with nanometric features. However, the critical challenge is that the fundamental material removal mechanisms for nano-milling are still unclear, due to the difficulties in nano-scale experiments.This thesis has conducted a systematic investigation into the nano-milling of single crystal copper with the aid of molecular dynamics analysis. The following are the main findings and conclusions:1. The Morse potential with compensation scaling can be used to reliably describe Cu-Cu interactions with both simulation accuracy and efficiency. A suitable integration time step for the simulation of copper, comprehensively determined by the algorithm constraint and bond-distance dynamics, has been identified to be within the range of 4 fs to 12 fs.2. Single crystal copper is sensitive to the rotational speed of a nano-milling tool. The resultant threshold cutting speed should be 2,062 m/s.3. The crystallographic orientation effect of single crystal copper has been identified through nano-scratching. The material coefficient has been found to vary with cutting directions.4. A chip removal criterion has been established according to the contact length of the macro-scale.5. Stress waves have been found to propagate along the directions in 45 degree with the feeding direction of nano-milling and they can influence the minimum mid-wall thickness in a multi-grooving process.6. The quality of both single- and multi-grooving processes has been investigated by analysing the residual shear stresses around the grooves, shear strain rate variation and stress wave propagation. The study reveals that the machining mechanisms of end milling and peripheral milling at the nano-scale are fairly similar. The depth of cut is critical to the groove quality from a single-milling path. Due to the minimisation of the surface energy, the groove geometry cannot be perfect, and the geometry distortion can spread to a depth of seven atomic layers. 7. It has been discovered that both the depth of cut and mid-wall thickness play a significant role in multiple grooving. The minimum mid-wall thickness in sequential grooving is determined by the highest residual shear stress inside the workpiece. For simultaneous grooving, strain rate and highest shear stress play important roles in Method-B (with opposite rotational orientations) and Method-A (with the same rotational orientation), respectively. 8. Dimensional analyses are preformed to generalise the simulation results, and dimensionless nano-milling charts are then constructed to guide the selection of nano-milling parameters based on grooving efficiency and quality. Advisors/Committee Members: Zhang, Liangchi, Mechanical & Manufacturing Engineering, Faculty of Engineering, UNSW.

Subjects/Keywords: Chip removal criterion; Molecular dynamics; Nano-milling; Momentum scaling; Strain rate; Stress; Copper; Multi-grooving

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Cui, D. (2014). Molecular dynamics simulation of nano-milling on copper. (Doctoral Dissertation). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/53642 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12337/SOURCE02?view=true

Chicago Manual of Style (16^th Edition):

Cui, Dandan. “Molecular dynamics simulation of nano-milling on copper.” 2014. Doctoral Dissertation, University of New South Wales. Accessed January 26, 2021. http://handle.unsw.edu.au/1959.4/53642 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12337/SOURCE02?view=true.

MLA Handbook (7^th Edition):

Cui, Dandan. “Molecular dynamics simulation of nano-milling on copper.” 2014. Web. 26 Jan 2021.

Vancouver:

Cui D. Molecular dynamics simulation of nano-milling on copper. [Internet] [Doctoral dissertation]. University of New South Wales; 2014. [cited 2021 Jan 26]. Available from: http://handle.unsw.edu.au/1959.4/53642 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12337/SOURCE02?view=true.

Council of Science Editors:

Cui D. Molecular dynamics simulation of nano-milling on copper. [Doctoral Dissertation]. University of New South Wales; 2014. Available from: http://handle.unsw.edu.au/1959.4/53642 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12337/SOURCE02?view=true

14. Nakhoul, Rebecca. Méthode multi-échelle pour la modélisation du flambage des tôles minces sous contraintes résiduelles : Application au laminage à froid : Multi-scale method for modeling thin sheet buckling under residual stress : In the context of cold strip rolling.

Degree: Docteur es, Mécanique numérique, 2014, Paris, ENMP

URL: http://www.theses.fr/2014ENMP0005

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La modélisation des défauts de planéité apparaissant en ligne en laminage à froid des tôles minces est abordée comme un problème de flambage de tôles… (more)

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La modélisation des défauts de planéité apparaissant en ligne en laminage à froid des tôles minces est abordée comme un problème de flambage de tôles minces sous contraintes résiduelles. Celles-ci sont les contraintes engendrées au-delà de l'emprise par le laminage lui-même. Pour cela, un modèle de flambage et post-flambage de tôle (forme, amplitude, contraintes) fondé sur la méthode multi-échelle de Damil et Potier-Ferry, et nommé MSBM pour Multi-Scale Based Method, a été développé. En entrée, on y introduit une carte de contraintes post-emprise venant d'un calcul de laminage. Les hypothèses simplificatrices du modèle de flambement permettent de ramener sa résolution à un ensemble de problèmes éléments finis 1D, mais de ce fait restreignent l'analyse aux défauts de type bord long ou centre long. Dans sa version découplée, ce modèle a été comparé avec succès à des résultats de la littérature. Il permet d'effectuer des études paramétriques d'intérêt pratique, comme l'influence du frottement ou de la force de contre-flexion des cylindres sur l'état de contrainte et la géométrie de la tôle.Dans un second temps, ce modèle est introduit comme modèle de flambage intégré dans le logiciel éléments finis de laminage Lam3/Tec3. Comme dans le modèle précédent implémenté par Abdelkhalek en 2010, MSBM calcule un champ de déformation lié spécifiquement aux déplacements hors-plan caractérisant le flambage, champ de déformation qui est ajouté à la décomposition élastique – plastique et réactualisé à chaque itération du calcul éléments finis. Des comparaisons ont été effectuées avec les deux modèles couplés précédemment implantés par Abdelkhalek. Elles montrent les insuffisances du présent modèle de flambage, unidirectionnel, qui ne permet pas de traiter toutes ensemble les diverses instabilités, d'orientations différentes, qui ont lieu après la sortie d'emprise et se révèlent fortement couplées entre elles. Des pistes d'amélioration sont proposées en conséquence.

Modelling of on line manifest flatness defects in thin strip cold rolling is addressed as a problem of buckling under residual stresses. The latter are stresses built beyond the roll bite by the rolling process itself. To this aim, a buckling / post buckling model has been developed, giving strip shape, amplitude and stresses, based on Damil and Potier-Ferry's method and hereafter named MSBM like Multi-Scale Based Method. Its input is a post-bite stress map computed by a rolling model. Simplifications of the buckling model make it amenable to a series of 1D FEM solutions, but restrict its application to simple flatness defects such as wavy edges or wavy centre. In a decoupled version, it has been successfully compared with literature results. It allows parametric studies of practical interest, such as the influence of friction or work roll bending force on post-buckled strip shape and stress.In a second stage, this model is implemented as the internal buckling model in the FEM software Lam3/Tec3. As the previous one, implemented by Abdelkhalek in 2010, MSBM computes a…

Advisors/Committee Members: Montmitonnet, Pierre (thesis director).

Subjects/Keywords: Laminage à froid; Tôle mince; Flambage; Post flambage; Contraintes résiduelles; Méthode multi-échelle; Cold rolling; Thin strip; Buckling; Post-buckling; Residual stress; Multi-scale method

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APA (6^th Edition):

Nakhoul, R. (2014). Méthode multi-échelle pour la modélisation du flambage des tôles minces sous contraintes résiduelles : Application au laminage à froid : Multi-scale method for modeling thin sheet buckling under residual stress : In the context of cold strip rolling. (Doctoral Dissertation). Paris, ENMP. Retrieved from http://www.theses.fr/2014ENMP0005

Chicago Manual of Style (16^th Edition):

Nakhoul, Rebecca. “Méthode multi-échelle pour la modélisation du flambage des tôles minces sous contraintes résiduelles : Application au laminage à froid : Multi-scale method for modeling thin sheet buckling under residual stress : In the context of cold strip rolling.” 2014. Doctoral Dissertation, Paris, ENMP. Accessed January 26, 2021. http://www.theses.fr/2014ENMP0005.

MLA Handbook (7^th Edition):

Nakhoul, Rebecca. “Méthode multi-échelle pour la modélisation du flambage des tôles minces sous contraintes résiduelles : Application au laminage à froid : Multi-scale method for modeling thin sheet buckling under residual stress : In the context of cold strip rolling.” 2014. Web. 26 Jan 2021.

Vancouver:

Nakhoul R. Méthode multi-échelle pour la modélisation du flambage des tôles minces sous contraintes résiduelles : Application au laminage à froid : Multi-scale method for modeling thin sheet buckling under residual stress : In the context of cold strip rolling. [Internet] [Doctoral dissertation]. Paris, ENMP; 2014. [cited 2021 Jan 26]. Available from: http://www.theses.fr/2014ENMP0005.

Council of Science Editors:

Nakhoul R. Méthode multi-échelle pour la modélisation du flambage des tôles minces sous contraintes résiduelles : Application au laminage à froid : Multi-scale method for modeling thin sheet buckling under residual stress : In the context of cold strip rolling. [Doctoral Dissertation]. Paris, ENMP; 2014. Available from: http://www.theses.fr/2014ENMP0005

15. Taher, Bilal. Analyse et modélisation de l'endommagement dû au couplage thermomécanique des multi-matériaux cylindriques : Analysis and modeling of damage due to thermomechanical coupling of cylindrical multi-materials.

Degree: Docteur es, Mécanique, 2012, Belfort-Montbéliard

URL: http://www.theses.fr/2012BELF0174

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Un grand nombre de systèmes thermomécaniques industriels se trouve confronté à des régimes transitoires plus ou moins rapides suivant la fréquence de fonctionnement. L'amélioration de… (more)

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Un grand nombre de systèmes thermomécaniques industriels se trouve confronté à des régimes transitoires plus ou moins rapides suivant la fréquence de fonctionnement. L'amélioration de leurs performances nécessite l'utilisation de nouvelles structures du type multimatériaux ou barrière thermique. En effet, ces matériaux peuvent être de type multicouche en associant plusieurs couches rangées de façon à améliorer le comportement mécanique et thermique d’un système ou alors constitués d’un substrat revêtu d’une succession de couches minces obtenues par projection thermique par exemple.Dans un système donné, ces matériaux subissent généralement des sollicitations cycliques qui peuvent être d’origine thermique et/ou mécanique. Il est donc nécessaire de mieux connaître leur comportement thermomécanique en régimes élastique et plastique. Ainsi, l'étude présentée dans ce travail, limitée ici à des conditions périodiques uniquement d’origine thermique, traite de l'évolution de l'endommagement d'un matériau sous une ou plusieurs formes de fatigue thermique.L'origine de la sollicitation imposée provient d'une condition de flux périodique (sous forme d’échelon, de triangle ou de sinus) prenant en compte les pertes par convection. Sur le plan mécanique, le matériau est supposé fixe sur l’une de ses deux extrémités et libre de se déformer sur l’autre. Les contraintes et les déformations mécaniques dans le matériau proviennent essentiellement des différences des coefficients de dilatation thermique et des gradients de température dans le matériau. La nature variable et transitoire du comportement thermique du matériau permet de suivre l’évolution de la distribution des contraintes et des déformations au sein du matériau.L’étude de son endommagement est menée selon les cas, soit sur des modèles établis directement à partir du comportement thermo élastique soit sur des modèles nécessitant l’étude thermo-élastoplastique. Dans les deux cas, comme la plupart des modèles d’endommagement (Lemaître et Chaboche) rencontrés dans la littérature ne sont valides que sur des matériaux uniformes et homogènes, une recherche de matériau équivalent du multi-matériau étudié était nécessaire. L’équivalence entre le matériau réel et le matériau équivalent repose sur un critère d’équivalence thermique. Les modèles étudiés fournissent dans les deux cas, l'évolution de l'endommagement du matériau, en fonction des paramètres géométriques et aussi de la forme des sollicitations thermiques imposées telles que le coefficient d'échange par convection, l’amplitude et la période du flux imposé.Une application de ces modèles sur un exemple de moteur à combustion interne est proposée à la fin de ce mémoire. Elle montre une prédiction du nombre de cycles (durée de vie) du cylindre moteur en fonction des conditions de fonctionnement utilisées.

A great number of industrial thermo-mechanical systems are facing today transitory regimes with different speeds according to the functioning frequencies. Enhancing their performance imposes the use of new materials of…

Advisors/Committee Members: Abboudi, Saïd (thesis director), Younes, Rafic (thesis director).

Subjects/Keywords: Fatigue thermique; Thermomécanique; Endommagement; Thermo-élasto-plastique; Couplage; Multi-matériaux; Charge cyclique thermique; Thermal stress; Thermo-mechanical; Damage; Thermo-elasto-plastic; Coupling; Multi-material; Cycling thermal load

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Taher, B. (2012). Analyse et modélisation de l'endommagement dû au couplage thermomécanique des multi-matériaux cylindriques : Analysis and modeling of damage due to thermomechanical coupling of cylindrical multi-materials. (Doctoral Dissertation). Belfort-Montbéliard. Retrieved from http://www.theses.fr/2012BELF0174

Chicago Manual of Style (16^th Edition):

Taher, Bilal. “Analyse et modélisation de l'endommagement dû au couplage thermomécanique des multi-matériaux cylindriques : Analysis and modeling of damage due to thermomechanical coupling of cylindrical multi-materials.” 2012. Doctoral Dissertation, Belfort-Montbéliard. Accessed January 26, 2021. http://www.theses.fr/2012BELF0174.

MLA Handbook (7^th Edition):

Taher, Bilal. “Analyse et modélisation de l'endommagement dû au couplage thermomécanique des multi-matériaux cylindriques : Analysis and modeling of damage due to thermomechanical coupling of cylindrical multi-materials.” 2012. Web. 26 Jan 2021.

Vancouver:

Taher B. Analyse et modélisation de l'endommagement dû au couplage thermomécanique des multi-matériaux cylindriques : Analysis and modeling of damage due to thermomechanical coupling of cylindrical multi-materials. [Internet] [Doctoral dissertation]. Belfort-Montbéliard; 2012. [cited 2021 Jan 26]. Available from: http://www.theses.fr/2012BELF0174.

Council of Science Editors:

Taher B. Analyse et modélisation de l'endommagement dû au couplage thermomécanique des multi-matériaux cylindriques : Analysis and modeling of damage due to thermomechanical coupling of cylindrical multi-materials. [Doctoral Dissertation]. Belfort-Montbéliard; 2012. Available from: http://www.theses.fr/2012BELF0174

University of Texas – Austin

16. Sakib, Nazmus. Response of asphalt matrix under multi-axial stress state.

Degree: MSin Engineering, Civil Engineering, 2014, University of Texas – Austin

URL: http://hdl.handle.net/2152/25860

► The pavement system is subjected to complex stress states under vehicular loading. A combination of axial and shear stress has been identified as a potential… (more)

Subjects/Keywords: FAM; Arcan; Multi-axial; Multi-modal; Complex stress; Interaction nonlinearity; Shear compliance; Creep compliance; DIC; Digital image correlation; Near surface cracking; TDC

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APA (6^th Edition):

Sakib, N. (2014). Response of asphalt matrix under multi-axial stress state. (Masters Thesis). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/25860

Chicago Manual of Style (16^th Edition):

Sakib, Nazmus. “Response of asphalt matrix under multi-axial stress state.” 2014. Masters Thesis, University of Texas – Austin. Accessed January 26, 2021. http://hdl.handle.net/2152/25860.

MLA Handbook (7^th Edition):

Sakib, Nazmus. “Response of asphalt matrix under multi-axial stress state.” 2014. Web. 26 Jan 2021.

Vancouver:

Sakib N. Response of asphalt matrix under multi-axial stress state. [Internet] [Masters thesis]. University of Texas – Austin; 2014. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/2152/25860.

Council of Science Editors:

Sakib N. Response of asphalt matrix under multi-axial stress state. [Masters Thesis]. University of Texas – Austin; 2014. Available from: http://hdl.handle.net/2152/25860

Queensland University of Technology

17. Zong, Nannan. Development of optimal designs of insulated rail joints.

Degree: 2013, Queensland University of Technology

URL: https://eprints.qut.edu.au/61125/

► Proper functioning of Insulated Rail Joints (IRJs) is essential for the safe operation of the railway signalling systems and broken rail identification circuitries. The Conventional… (more)

▼ Proper functioning of Insulated Rail Joints (IRJs) is essential for the safe operation of the railway signalling systems and broken rail identification circuitries. The Conventional IRJ (CIRJ) resembles structural butt joints consisting of two pieces of rails connected together through two joint bars on either side of their web and the assembly is held together through pre-tensioned bolts. As the IRJs should maintain electrical insulation between the two rails, a gap between the rail ends must be retained at all times and all metal contacting surfaces should be electrically isolated from each other using non-conductive material. At the gap, the rail ends lose longitudinal continuity and hence the vertical sections of the rail ends are often severely damaged, especially at the railhead, due to the passage of wheels compared to other continuously welded rail sections. Fundamentally, the reason for the severe damage can be related to the singularities of the wheel-rail contact pressure and the railhead stress. No new generation designs that have emerged in the market to date have focussed on this fundamental; they only have provided attention to either the higher strength materials or the thickness of the sections of various components of the IRJs. In this thesis a novel method of shape optimisation of the railhead is developed to eliminate the pressure and stress singularities through changes to the original sharp corner shaped railhead into an arc profile in the longitudinal direction. The optimal shape of the longitudinal railhead profile has been determined using three nongradient methods in search of accuracy and efficiency: (1) Grid Search Method; (2) Genetic Algorithm Method and (3) Hybrid Genetic Algorithm Method. All these methods have been coupled with a parametric finite element formulation for the evaluation of the objective function for each iteration or generation depending on the search algorithm employed. The optimal shape derived from these optimisation methods is termed as Stress Minimised Railhead (SMRH) in this thesis. This optimal SMRH design has exhibited significantly reduced stress concentration that remains well below the yield strength of the head hardened rail steels and has shifted the stress concentration location away from the critical zone of the railhead end. The reduction in the magnitude and the relocation of the stress concentration in the SMRH design has been validated through a full scale wheel – railhead interaction test rig; Railhead strains under the loaded wheels have been recorded using a non-contact digital image correlation method. Experimental study has confirmed the accuracy of the numerical predications. Although the SMRH shaped IRJs eliminate stress singularities, they can still fail due to joint bar or bolt hole cracking; therefore, another conceptual design, termed as Embedded IRJ (EIRJ) in this thesis, with no joint bars and pre-tensioned bolts has been developed using a multi-objective optimisation formulation based on the coupled genetic algorithm –…

Subjects/Keywords: insulated rail joint; stress minimisation; multi-objective optimisation; edge effect; shape optimisation; wheel-rail contact; parametric finite element method

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Zong, N. (2013). Development of optimal designs of insulated rail joints. (Thesis). Queensland University of Technology. Retrieved from https://eprints.qut.edu.au/61125/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Zong, Nannan. “Development of optimal designs of insulated rail joints.” 2013. Thesis, Queensland University of Technology. Accessed January 26, 2021. https://eprints.qut.edu.au/61125/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Zong, Nannan. “Development of optimal designs of insulated rail joints.” 2013. Web. 26 Jan 2021.

Vancouver:

Zong N. Development of optimal designs of insulated rail joints. [Internet] [Thesis]. Queensland University of Technology; 2013. [cited 2021 Jan 26]. Available from: https://eprints.qut.edu.au/61125/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Zong N. Development of optimal designs of insulated rail joints. [Thesis]. Queensland University of Technology; 2013. Available from: https://eprints.qut.edu.au/61125/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

18. Xue, Ruikang. Cellular Fluid Mechanics in Osteochondral Tissue Engineering.

Degree: 2019, University of Manchester

URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:319473

► As an alternative treatment to bone and cartilage injuries, tissue engineering uses cells, scaffolds and mechanical stimulation to produce cell-laden constructs in vitro. Fluid-induced shear… (more)

▼ As an alternative treatment to bone and cartilage injuries, tissue engineering uses cells, scaffolds and mechanical stimulation to produce cell-laden constructs in vitro. Fluid-induced shear stress (FSS) is able to facilitate desired tissue formation and it has been shown to change cellular behaviour of both 2 dimensional (2D) and 3D cultured cells inside a porous scaffold. Mechanotransduction is the study of translating mechanical stimuli to cellular behaviour. 2D mechanotransduction studies often employ a parallel-plate flow chamber (PFC) to induce FSS of which the magnitude can be calculated analytically. However, the disturbance of the seeded cells to local flow field in real-time needs to be elucidated. FSS up to 4 Pa is normally used in 2D studies whereas significant lower FSS (up to 0.015 Pa) is applied to 3D cultured cells to induce the same cellular response. The geometrical cues introduced from a 3D porous scaffold has been shown to influence cellular behaviour. Limited tools and in vitro models are a major hurdle to 3D mechanotransduction study due to the inaccessibility of 3D scaffolds. Because of the distinct difference between bone and cartilage, osteochondral tissue engineering (OCTE) employs bi-layered scaffolds and co-culture bioreactors to create tissue-specific micro-environment. Additive manufactured scaffolds from computer-aided designs (CAD) with tunable properties are ideal candidates for OCTE. Firstly, this project used a novel particle tracking technique to study the real-time effect of local flow field on cellular behaviour of human mesenchymal stem cells (hMSC) and mouse MC3T3-E1 cells during 1 h perfusion. It showed that the local flow field is dependent on cell morphology, which can lead to cellular behaviour change during the perfusion in real-time. Secondly, this project developed a simple in vitro 2.5D model using glass capillary tubes which mimics the 3D cell culture environment with a curved surface. Compared to the 2D culture, cells in the 2.5D model led to significant higher osteogenesis under low levels of FSS. Moreover, a morphometric analysis has been developed to quantify actin network reorganisation during hMSC osteogenesis. Lastly, this project developed an osteochondral culture system using a novel additive manufactured scaffold and a co-culture perfusion bioreactor. It was shown to support cell survival, proliferation and distribution, which was comparable to a commercial acellular scaffold. The finite element analysis (FEA) revealed that the culture system provided an optimal osteochondral culture environment. Compared to the CAD, the FEA showed that the actual produced scaffold geometry led to significant different flow velocity, FSS and differentiation media mixing. Advisors/Committee Members: RICHARDSON, STEPHEN SMA, Cartmell, Sarah, Richardson, Stephen.

Subjects/Keywords: fluid-induced shear stress; mechanotransduction; osteochondral tissue engineering; co-culture; 2.5D culture model; multi-focal microscopy; real-time fluid dynamics

10 more images…

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APA (6^th Edition):

Xue, R. (2019). Cellular Fluid Mechanics in Osteochondral Tissue Engineering. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:319473

Chicago Manual of Style (16^th Edition):

Xue, Ruikang. “Cellular Fluid Mechanics in Osteochondral Tissue Engineering.” 2019. Doctoral Dissertation, University of Manchester. Accessed January 26, 2021. http://www.manchester.ac.uk/escholar/uk-ac-man-scw:319473.

MLA Handbook (7^th Edition):

Xue, Ruikang. “Cellular Fluid Mechanics in Osteochondral Tissue Engineering.” 2019. Web. 26 Jan 2021.

Vancouver:

Xue R. Cellular Fluid Mechanics in Osteochondral Tissue Engineering. [Internet] [Doctoral dissertation]. University of Manchester; 2019. [cited 2021 Jan 26]. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:319473.

Council of Science Editors:

Xue R. Cellular Fluid Mechanics in Osteochondral Tissue Engineering. [Doctoral Dissertation]. University of Manchester; 2019. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:319473

19. Tan, Julian Lip Yi. Multi-axial fracture behaviour of notched carbon-fibre/epoxy laminates.

Degree: PhD, 2015, University of Cambridge

URL: https://www.repository.cam.ac.uk/handle/1810/247924https://www.repository.cam.ac.uk/bitstream/1810/247924/2/license.txt ; https://www.repository.cam.ac.uk/bitstream/1810/247924/3/Thesis%20%28jlyt2%29.pdf.txt ; https://www.repository.cam.ac.uk/bitstream/1810/247924/4/Thesis%20%28jlyt2%29.pdf.jpg

► Carbon-fibre reinforced polymer (CFRP) laminates are widely used in various engineering applications, such as in race cars and aircrafts, because they are light, stiff and… (more)

▼ Carbon-fibre reinforced polymer (CFRP) laminates are widely used in various engineering applications, such as in race cars and aircrafts, because they are light, stiff and strong. They commonly contain stress raisers in the form of holes and notches (for mechanical joining methods, routing of pipes and cables etc.) and are also often subjected to complex combined multi-axial stress conditions during service. Yet their notched multi-axial fracture behaviour remains largely unexplored. This is the main contribution of the thesis. First, a novel loading fixture for applying a wide range of in-plane loading modes is developed based on the popular Arcan’s method. Termed the ‘modified Arcan rig’, it utilises friction gripping to transfer loads into tabbed specimens. This loading fixture is used to test centre-notched multi-directional CFRP laminates under different combinations of tension and shear stresses. Together with penetrant-enhanced X-ray CT and laminate de-ply, the fracture behaviour of quasi-isotropic CFRP specimens is investigated for the following loading modes: pure tension, pure compression, in-plane shear, and combined tension and shear. Two notch geometries (sharp notch and circular hole) are investigated to allow for an assessment of the role of stress concentration upon strength and damage development to be performed. Three distinct fracture modes are observed in a tensile/compressive-shear stress space (termed Mechanism A, Mechanism B and Mechanism C). It is observed that quasi-isotropic specimens with a central sharp notch are consistently stronger than equivalent specimens with a central circular hole (for all stress states investigated). An underlying micromechanical explanation concerning the effects of damage upon strength is proposed. Second, a finite element (FE) model is developed using the commercial FE program, Abaqus FEA to simulate the observed progressive damage and failure in the quasi-isotropic specimens. The FE model employs independent material property data as inputs. Overall, good correlation between the simulations and the experiments is obtained, validating the FE strategy. The capabilities of the model are extended to predict the notched fracture behaviour of the specimens under combined compression and shear loading, for which experimental work has not been done by the author, but for which literature data exists. Finally, the effect of laminate lay-up upon the notched multi-axial fracture behaviour of the CFRP specimens is explored by considering a 0° ply-dominated lay-up, a ±45° ply-dominated lay-up and a cross-ply lay-up, alongside the quasi-isotropic lay-up. Experiments reveal that all lay-ups exhibit Mechanisms A, B and C. However, the extent of damage in each Mechanism as well as the regime in which each Mechanism operates in (in the failure envelopes) strongly depend on the lay-up of the specimen. As expected, the tensile strengths and compressive strengths increase with the proportion of 0° plies. Surprisingly, the shear strengths do not scale with the proportion…

Subjects/Keywords: carbon fibre; laminates; multi-axial loading; modified Arcan rig; damage mechanisms; FE analysis; stress concentration effects; lay-up effects

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APA (6^th Edition):

Tan, J. L. Y. (2015). Multi-axial fracture behaviour of notched carbon-fibre/epoxy laminates. (Doctoral Dissertation). University of Cambridge. Retrieved from https://www.repository.cam.ac.uk/handle/1810/247924https://www.repository.cam.ac.uk/bitstream/1810/247924/2/license.txt ; https://www.repository.cam.ac.uk/bitstream/1810/247924/3/Thesis%20%28jlyt2%29.pdf.txt ; https://www.repository.cam.ac.uk/bitstream/1810/247924/4/Thesis%20%28jlyt2%29.pdf.jpg

Chicago Manual of Style (16^th Edition):

Tan, Julian Lip Yi. “Multi-axial fracture behaviour of notched carbon-fibre/epoxy laminates.” 2015. Doctoral Dissertation, University of Cambridge. Accessed January 26, 2021. https://www.repository.cam.ac.uk/handle/1810/247924https://www.repository.cam.ac.uk/bitstream/1810/247924/2/license.txt ; https://www.repository.cam.ac.uk/bitstream/1810/247924/3/Thesis%20%28jlyt2%29.pdf.txt ; https://www.repository.cam.ac.uk/bitstream/1810/247924/4/Thesis%20%28jlyt2%29.pdf.jpg.

MLA Handbook (7^th Edition):

Tan, Julian Lip Yi. “Multi-axial fracture behaviour of notched carbon-fibre/epoxy laminates.” 2015. Web. 26 Jan 2021.

Vancouver:

Tan JLY. Multi-axial fracture behaviour of notched carbon-fibre/epoxy laminates. [Internet] [Doctoral dissertation]. University of Cambridge; 2015. [cited 2021 Jan 26]. Available from: https://www.repository.cam.ac.uk/handle/1810/247924https://www.repository.cam.ac.uk/bitstream/1810/247924/2/license.txt ; https://www.repository.cam.ac.uk/bitstream/1810/247924/3/Thesis%20%28jlyt2%29.pdf.txt ; https://www.repository.cam.ac.uk/bitstream/1810/247924/4/Thesis%20%28jlyt2%29.pdf.jpg.

Council of Science Editors:

Tan JLY. Multi-axial fracture behaviour of notched carbon-fibre/epoxy laminates. [Doctoral Dissertation]. University of Cambridge; 2015. Available from: https://www.repository.cam.ac.uk/handle/1810/247924https://www.repository.cam.ac.uk/bitstream/1810/247924/2/license.txt ; https://www.repository.cam.ac.uk/bitstream/1810/247924/3/Thesis%20%28jlyt2%29.pdf.txt ; https://www.repository.cam.ac.uk/bitstream/1810/247924/4/Thesis%20%28jlyt2%29.pdf.jpg

Cranfield University

20. Sule, Jibrin. Application of local mechanical tensioning and laser processing to improve structural integrity of multi-pass welds.

Degree: PhD, 2015, Cranfield University

URL: http://dspace.lib.cranfield.ac.uk/handle/1826/9564 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.667929

► Multi-pass fusion welding by a filler wire (welding electrode) is normally carried out to join thick steel sections used in most engineering applications. Welded joints… (more)

Subjects/Keywords: 671.5; Structural steel alloys; Multi-pass welds; Microstructure; Mechanical properties; Residual stress; Neutron diffraction; Rolling; Laser processing

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Sule, J. (2015). Application of local mechanical tensioning and laser processing to improve structural integrity of multi-pass welds. (Doctoral Dissertation). Cranfield University. Retrieved from http://dspace.lib.cranfield.ac.uk/handle/1826/9564 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.667929

Chicago Manual of Style (16^th Edition):

Sule, Jibrin. “Application of local mechanical tensioning and laser processing to improve structural integrity of multi-pass welds.” 2015. Doctoral Dissertation, Cranfield University. Accessed January 26, 2021. http://dspace.lib.cranfield.ac.uk/handle/1826/9564 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.667929.

MLA Handbook (7^th Edition):

Sule, Jibrin. “Application of local mechanical tensioning and laser processing to improve structural integrity of multi-pass welds.” 2015. Web. 26 Jan 2021.

Vancouver:

Sule J. Application of local mechanical tensioning and laser processing to improve structural integrity of multi-pass welds. [Internet] [Doctoral dissertation]. Cranfield University; 2015. [cited 2021 Jan 26]. Available from: http://dspace.lib.cranfield.ac.uk/handle/1826/9564 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.667929.

Council of Science Editors:

Sule J. Application of local mechanical tensioning and laser processing to improve structural integrity of multi-pass welds. [Doctoral Dissertation]. Cranfield University; 2015. Available from: http://dspace.lib.cranfield.ac.uk/handle/1826/9564 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.667929

University of Manchester

21. Xue, Ruikang. Cellular fluid mechanics in osteochondral tissue engineering.

Degree: PhD, 2019, University of Manchester

URL: https://www.research.manchester.ac.uk/portal/en/theses/cellular-fluid-mechanics-in-osteochondral-tissue-engineering(a82b2b42-3ac7-486c-a85e-9790e912de74).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.779678

► As an alternative treatment to bone and cartilage injuries, tissue engineering uses cells, scaffolds and mechanical stimulation to produce cell-laden constructs in vitro. Fluid-induced shear… (more)

▼ As an alternative treatment to bone and cartilage injuries, tissue engineering uses cells, scaffolds and mechanical stimulation to produce cell-laden constructs in vitro. Fluid-induced shear stress (FSS) is able to facilitate desired tissue formation and it has been shown to change cellular behaviour of both 2 dimensional (2D) and 3D cultured cells inside a porous scaffold. Mechanotransduction is the study of translating mechanical stimuli to cellular behaviour. 2D mechanotransduction studies often employ a parallel-plate flow chamber (PFC) to induce FSS of which the magnitude can be calculated analytically. However, the disturbance of the seeded cells to local flow field in real-time needs to be elucidated. FSS up to 4 Pa is normally used in 2D studies whereas significant lower FSS (up to 0.015 Pa) is applied to 3D cultured cells to induce the same cellular response. The geometrical cues introduced from a 3D porous scaffold has been shown to influence cellular behaviour. Limited tools and in vitro models are a major hurdle to 3D mechanotransduction study due to the inaccessibility of 3D scaffolds. Because of the distinct difference between bone and cartilage, osteochondral tissue engineering (OCTE) employs bi-layered scaffolds and co-culture bioreactors to create tissue-specific micro-environment. Additive manufactured scaffolds from computer-aided designs (CAD) with tunable properties are ideal candidates for OCTE. Firstly, this project used a novel particle tracking technique to study the real-time effect of local flow field on cellular behaviour of human mesenchymal stem cells (hMSC) and mouse MC3T3-E1 cells during 1 h perfusion. It showed that the local flow field is dependent on cell morphology, which can lead to cellular behaviour change during the perfusion in real-time. Secondly, this project developed a simple in vitro 2.5D model using glass capillary tubes which mimics the 3D cell culture environment with a curved surface. Compared to the 2D culture, cells in the 2.5D model led to significant higher osteogenesis under low levels of FSS. Moreover, a morphometric analysis has been developed to quantify actin network reorganisation during hMSC osteogenesis. Lastly, this project developed an osteochondral culture system using a novel additive manufactured scaffold and a co-culture perfusion bioreactor. It was shown to support cell survival, proliferation and distribution, which was comparable to a commercial acellular scaffold. The finite element analysis (FEA) revealed that the culture system provided an optimal osteochondral culture environment. Compared to the CAD, the FEA showed that the actual produced scaffold geometry led to significant different flow velocity, FSS and differentiation media mixing.

Subjects/Keywords: 620; mechanotransduction; multi-focal microscopy; real-time fluid dynamics; 2.5D culture model; fluid-induced shear stress; osteochondral tissue engineering; co-culture

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Xue, R. (2019). Cellular fluid mechanics in osteochondral tissue engineering. (Doctoral Dissertation). University of Manchester. Retrieved from https://www.research.manchester.ac.uk/portal/en/theses/cellular-fluid-mechanics-in-osteochondral-tissue-engineering(a82b2b42-3ac7-486c-a85e-9790e912de74).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.779678

Chicago Manual of Style (16^th Edition):

Xue, Ruikang. “Cellular fluid mechanics in osteochondral tissue engineering.” 2019. Doctoral Dissertation, University of Manchester. Accessed January 26, 2021. https://www.research.manchester.ac.uk/portal/en/theses/cellular-fluid-mechanics-in-osteochondral-tissue-engineering(a82b2b42-3ac7-486c-a85e-9790e912de74).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.779678.

MLA Handbook (7^th Edition):

Xue, Ruikang. “Cellular fluid mechanics in osteochondral tissue engineering.” 2019. Web. 26 Jan 2021.

Vancouver:

Xue R. Cellular fluid mechanics in osteochondral tissue engineering. [Internet] [Doctoral dissertation]. University of Manchester; 2019. [cited 2021 Jan 26]. Available from: https://www.research.manchester.ac.uk/portal/en/theses/cellular-fluid-mechanics-in-osteochondral-tissue-engineering(a82b2b42-3ac7-486c-a85e-9790e912de74).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.779678.

Council of Science Editors:

Xue R. Cellular fluid mechanics in osteochondral tissue engineering. [Doctoral Dissertation]. University of Manchester; 2019. Available from: https://www.research.manchester.ac.uk/portal/en/theses/cellular-fluid-mechanics-in-osteochondral-tissue-engineering(a82b2b42-3ac7-486c-a85e-9790e912de74).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.779678

Delft University of Technology

22. Ribbens, Frank (author). Applying blockchain technology in multi-sided platforms to enable business model innovation: An explorative case study on decentralized sharing platforms.

Degree: 2018, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:f8fa890a-d75c-466c-8f45-fbcad907f980

► The competiveness between businesses is continuously increasing and multi-sided platforms seek to reduce cost, increase efficiency and improve the quality of products and services. This… (more)

Subjects/Keywords: Blockchain technology; Smart contracts; Decentralization; Multi-sided platforms; Sharing economy; STOF; Business model innovation; Business model stress test

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APA (6^th Edition):

Ribbens, F. (. (2018). Applying blockchain technology in multi-sided platforms to enable business model innovation: An explorative case study on decentralized sharing platforms. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:f8fa890a-d75c-466c-8f45-fbcad907f980

Chicago Manual of Style (16^th Edition):

Ribbens, Frank (author). “Applying blockchain technology in multi-sided platforms to enable business model innovation: An explorative case study on decentralized sharing platforms.” 2018. Masters Thesis, Delft University of Technology. Accessed January 26, 2021. http://resolver.tudelft.nl/uuid:f8fa890a-d75c-466c-8f45-fbcad907f980.

MLA Handbook (7^th Edition):

Ribbens, Frank (author). “Applying blockchain technology in multi-sided platforms to enable business model innovation: An explorative case study on decentralized sharing platforms.” 2018. Web. 26 Jan 2021.

Vancouver:

Ribbens F(. Applying blockchain technology in multi-sided platforms to enable business model innovation: An explorative case study on decentralized sharing platforms. [Internet] [Masters thesis]. Delft University of Technology; 2018. [cited 2021 Jan 26]. Available from: http://resolver.tudelft.nl/uuid:f8fa890a-d75c-466c-8f45-fbcad907f980.

Council of Science Editors:

Ribbens F(. Applying blockchain technology in multi-sided platforms to enable business model innovation: An explorative case study on decentralized sharing platforms. [Masters Thesis]. Delft University of Technology; 2018. Available from: http://resolver.tudelft.nl/uuid:f8fa890a-d75c-466c-8f45-fbcad907f980

23. Hani, Younes. Étude des paramètres digestifs chez l'épinoche à trois épines (Gasterosteus aculeatus) : intérêt en tant que biomarqueurs. : Study of digestive parameters in the threespine stickleback (Gasterosteus aculeatus) : interest as biomarkers.

Degree: Docteur es, Sciences - STS, 2018, Reims

URL: http://www.theses.fr/2018REIMS048

►

Avec le développement des activités anthropiques, les milieux aquatiques connaissent des modifications physico-chimiques, par exemple, la présence de contaminants chimiques et la perturbation des cycles… (more)

▼

Avec le développement des activités anthropiques, les milieux aquatiques connaissent des modifications physico-chimiques, par exemple, la présence de contaminants chimiques et la perturbation des cycles de température (réchauffement climatique) peuvent avoir des effets sur les organismes qui y vivent. Ce travail s'inscrit donc dans un contexte qui couvre, à la fois le besoin de développement de nouveaux outils d'évaluation de la qualité des milieux aquatiques, exigé par des réglementations telle que la DCE, et l'apport de nouvelles connaissances sur les effets des multistress sur les organismes vivants. Plus précisément, nous nous sommes intéressés à différents paramètres du métabolisme énergétique et à leur intérêt en tant que nouveaux biomarqueurs, chez l'épinoche à trois épines (Gasterosteus aculeatus), espèce modèle en écotoxicologie. Ce travail de thèse vise : (i) à caractériser l'influence de paramètres biotiques et abiotiques sur les paramètres choisis, (ii) à préciser le schéma de réponse des enzymes digestives dans un contexte de multistress (exposition chronique à une très faible concentration de cadmium et/ou à un stress thermique), et (iii) à renseigner les conséquences de cette exposition multiple sur la reproduction de l'épinoche, en lien avec la modulation des paramètres liés à l'énergie. Les résultats obtenus démontrent que la température est le facteur de stress majeur avec des répercussions négatives sur la majorité des paramètres étudiés (i.e. paramètres de croissance, quelques paramètres du métabolisme énergétique, paramètres du stress oxydant et paramètres de reproduction des parents). Concernant le cadmium, celui-ci engendre des effets au niveau moléculaire (enzymes digestives) mais n'affecte pas les paramètres de la reproduction des poissons adultes. Cependant, des conséquences de l'exposition au cadmium sont néanmoins observées sur les descendants (capacité de survie). L'impact négatif du multistress sur les paramètres de reproduction de l'épinoche peut être dû à un investissement parental altéré, qui probablement a fait suite à une altération de l'un des paramètres en relation avec l'acquisition de l'énergie, telles que les enzymes digestives. Ainsi, les paramètres associés au métabolisme énergétique, et tout particulièrement à l'acquisition de l'énergie (digestion) montrent une sensibilité intéressante aux différents stress étudiés soulignant leur potentiel en tant que nouveaux biomarqueurs.

In a large context of global warming (temperature increase), anthropogenic activities introduce significant amounts of organic and inorganic pollutants causing chemical and physical disruption on the aquatic ecosystems and there living organisms. This work is therefore part of a context that covers both the need for the development of new tools for assessing the quality of aquatic environments, as required by regulations such as the DCE, and the provision of new knowledge on multistress effects on living organisms. Specifically, we examined different energy metabolism parameters and their interest as…

Advisors/Committee Members: Geffard, Alain (thesis director), Porcher, Jean-Marc (thesis director).

Subjects/Keywords: Biomarqueurs; Enzymes digestives; Gasterosteus aculeatus; Métabolisme énergétique; Multi-Stress; Reproduction; Biomarkers; Digestive enzymes; Energy metabolism; Gasterosteus aculeatus; Multistress; Reproduction; 577.2

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Hani, Y. (2018). Étude des paramètres digestifs chez l'épinoche à trois épines (Gasterosteus aculeatus) : intérêt en tant que biomarqueurs. : Study of digestive parameters in the threespine stickleback (Gasterosteus aculeatus) : interest as biomarkers. (Doctoral Dissertation). Reims. Retrieved from http://www.theses.fr/2018REIMS048

Chicago Manual of Style (16^th Edition):

Hani, Younes. “Étude des paramètres digestifs chez l'épinoche à trois épines (Gasterosteus aculeatus) : intérêt en tant que biomarqueurs. : Study of digestive parameters in the threespine stickleback (Gasterosteus aculeatus) : interest as biomarkers.” 2018. Doctoral Dissertation, Reims. Accessed January 26, 2021. http://www.theses.fr/2018REIMS048.

MLA Handbook (7^th Edition):

Hani, Younes. “Étude des paramètres digestifs chez l'épinoche à trois épines (Gasterosteus aculeatus) : intérêt en tant que biomarqueurs. : Study of digestive parameters in the threespine stickleback (Gasterosteus aculeatus) : interest as biomarkers.” 2018. Web. 26 Jan 2021.

Vancouver:

Hani Y. Étude des paramètres digestifs chez l'épinoche à trois épines (Gasterosteus aculeatus) : intérêt en tant que biomarqueurs. : Study of digestive parameters in the threespine stickleback (Gasterosteus aculeatus) : interest as biomarkers. [Internet] [Doctoral dissertation]. Reims; 2018. [cited 2021 Jan 26]. Available from: http://www.theses.fr/2018REIMS048.

Council of Science Editors:

Hani Y. Étude des paramètres digestifs chez l'épinoche à trois épines (Gasterosteus aculeatus) : intérêt en tant que biomarqueurs. : Study of digestive parameters in the threespine stickleback (Gasterosteus aculeatus) : interest as biomarkers. [Doctoral Dissertation]. Reims; 2018. Available from: http://www.theses.fr/2018REIMS048

University of South Carolina

24. Bequette, Carlton James. MAP Kinase Signaling in Plant Responses to Biotic Stress.

Degree: PhD, Biological Sciences, 2015, University of South Carolina

URL: https://scholarcommons.sc.edu/etd/3142

► Plants must be able to perceive and properly respond to a multitude of environmental conditions and produce appropriate cellular responses for optimal growth and… (more)

Subjects/Keywords: Biology; Life Sciences; Mitogen-activated protein kinase; MAPK; regulation of cell death; multi-protein complex; negative regulation of MAPKs; stress responses

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Bequette, C. J. (2015). MAP Kinase Signaling in Plant Responses to Biotic Stress. (Doctoral Dissertation). University of South Carolina. Retrieved from https://scholarcommons.sc.edu/etd/3142

Chicago Manual of Style (16^th Edition):

Bequette, Carlton James. “MAP Kinase Signaling in Plant Responses to Biotic Stress.” 2015. Doctoral Dissertation, University of South Carolina. Accessed January 26, 2021. https://scholarcommons.sc.edu/etd/3142.

MLA Handbook (7^th Edition):

Bequette, Carlton James. “MAP Kinase Signaling in Plant Responses to Biotic Stress.” 2015. Web. 26 Jan 2021.

Vancouver:

Bequette CJ. MAP Kinase Signaling in Plant Responses to Biotic Stress. [Internet] [Doctoral dissertation]. University of South Carolina; 2015. [cited 2021 Jan 26]. Available from: https://scholarcommons.sc.edu/etd/3142.

Council of Science Editors:

Bequette CJ. MAP Kinase Signaling in Plant Responses to Biotic Stress. [Doctoral Dissertation]. University of South Carolina; 2015. Available from: https://scholarcommons.sc.edu/etd/3142

University of Cambridge

25. Tan, Julian Lip Yi. Multi-axial fracture behaviour of notched carbon-fibre/epoxy laminates.

Degree: PhD, 2015, University of Cambridge

URL: https://doi.org/10.17863/CAM.14092 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.649401

► Carbon-fibre reinforced polymer (CFRP) laminates are widely used in various engineering applications, such as in race cars and aircrafts, because they are light, stiff and… (more)

▼ Carbon-fibre reinforced polymer (CFRP) laminates are widely used in various engineering applications, such as in race cars and aircrafts, because they are light, stiff and strong. They commonly contain stress raisers in the form of holes and notches (for mechanical joining methods, routing of pipes and cables etc.) and are also often subjected to complex combined multi-axial stress conditions during service. Yet their notched multi-axial fracture behaviour remains largely unexplored. This is the main contribution of the thesis. First, a novel loading fixture for applying a wide range of in-plane loading modes is developed based on the popular Arcan’s method. Termed the ‘modified Arcan rig’, it utilises friction gripping to transfer loads into tabbed specimens. This loading fixture is used to test centre-notched multi-directional CFRP laminates under different combinations of tension and shear stresses. Together with penetrant-enhanced X-ray CT and laminate de-ply, the fracture behaviour of quasi-isotropic CFRP specimens is investigated for the following loading modes: pure tension, pure compression, in-plane shear, and combined tension and shear. Two notch geometries (sharp notch and circular hole) are investigated to allow for an assessment of the role of stress concentration upon strength and damage development to be performed. Three distinct fracture modes are observed in a tensile/compressive-shear stress space (termed Mechanism A, Mechanism B and Mechanism C). It is observed that quasi-isotropic specimens with a central sharp notch are consistently stronger than equivalent specimens with a central circular hole (for all stress states investigated). An underlying micromechanical explanation concerning the effects of damage upon strength is proposed. Second, a finite element (FE) model is developed using the commercial FE program, Abaqus FEA to simulate the observed progressive damage and failure in the quasi-isotropic specimens. The FE model employs independent material property data as inputs. Overall, good correlation between the simulations and the experiments is obtained, validating the FE strategy. The capabilities of the model are extended to predict the notched fracture behaviour of the specimens under combined compression and shear loading, for which experimental work has not been done by the author, but for which literature data exists. Finally, the effect of laminate lay-up upon the notched multi-axial fracture behaviour of the CFRP specimens is explored by considering a 0° ply-dominated lay-up, a ±45° ply-dominated lay-up and a cross-ply lay-up, alongside the quasi-isotropic lay-up. Experiments reveal that all lay-ups exhibit Mechanisms A, B and C. However, the extent of damage in each Mechanism as well as the regime in which each Mechanism operates in (in the failure envelopes) strongly depend on the lay-up of the specimen. As expected, the tensile strengths and compressive strengths increase with the proportion of 0° plies. Surprisingly, the shear strengths do not scale with the proportion of ±45°…

Subjects/Keywords: 620.1; carbon fibre; laminates; multi-axial loading; modified Arcan rig; damage mechanisms; FE analysis; stress concentration effects; lay-up effects

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APA (6^th Edition):

Tan, J. L. Y. (2015). Multi-axial fracture behaviour of notched carbon-fibre/epoxy laminates. (Doctoral Dissertation). University of Cambridge. Retrieved from https://doi.org/10.17863/CAM.14092 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.649401

Chicago Manual of Style (16^th Edition):

Tan, Julian Lip Yi. “Multi-axial fracture behaviour of notched carbon-fibre/epoxy laminates.” 2015. Doctoral Dissertation, University of Cambridge. Accessed January 26, 2021. https://doi.org/10.17863/CAM.14092 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.649401.

MLA Handbook (7^th Edition):

Tan, Julian Lip Yi. “Multi-axial fracture behaviour of notched carbon-fibre/epoxy laminates.” 2015. Web. 26 Jan 2021.

Vancouver:

Tan JLY. Multi-axial fracture behaviour of notched carbon-fibre/epoxy laminates. [Internet] [Doctoral dissertation]. University of Cambridge; 2015. [cited 2021 Jan 26]. Available from: https://doi.org/10.17863/CAM.14092 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.649401.

Council of Science Editors:

Tan JLY. Multi-axial fracture behaviour of notched carbon-fibre/epoxy laminates. [Doctoral Dissertation]. University of Cambridge; 2015. Available from: https://doi.org/10.17863/CAM.14092 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.649401

26. Zhang, Xiaoqin. THERMAL-ECONOMIC OPTIMIZATION AND STRUCTURAL EVALUATION FOR AN ADVANCED INTERMEDIATE HEAT EXCHANGER DESIGN.

Degree: MS, Nuclear Engineering, 2016, The Ohio State University

URL: http://rave.ohiolink.edu/etdc/view?acc_num=osu1462891005

► Coupling the s-CO2 Brayton cycle to the advanced nuclear reactors generally requires an intermediate heat exchanger (IHX). From an economic viewpoint, it is important to… (more)

▼ Coupling the s-CO2 Brayton cycle to the advanced nuclear reactors generally requires an intermediate heat exchanger (IHX). From an economic viewpoint, it is important to reduce the size and cost of IHX, but at the same time, the thermal hydraulic performances should not be deteriorated. Printed-circuit heat exchanger (PCHE), one of advanced compact heat exchangers, has been demonstrated as a competitive candidate. This thesis mainly focuses on designing a PCHE-type advanced IHX with innovative surface geometry with thermal, economic and mechanical consideration.Among the four outstanding surface geometries, zigzag and S-shaped fin channels are selected for a helium-to-s-CO2 IHX. Since the thermal-hydraulic correlations of the zigzag channel with a variety of geometrical parameters are available, a thermal-economic optimization is carried out to optimize the design of zigzag channel. For such multi-objective optimization problem, the annual total cost and heat exchanger thermal effectiveness are selected as two objectives functions. NSGA-II (a fast and elitist non-dominated sorting genetic algorithm), one of the widely used multi-objective genetic algorithms, is used for searching a group of Pareto-optimal designs. It is found that among the Pareto-optimal solutions, the total cost gradually increases with the thermal effectiveness between 88 and 95% while rises rapidly after the heat exchanger effectiveness exceeds around 95%. The sensitivity study shows that for the solutions with thermal effectiveness below around 95% the heat exchanger core physical length is the dominant factor that causes conflict between the total cost and thermal effectiveness. A similar trend can be observed from both the basic and extended design space. The final selection of the optimal designs obtained from the thermal-economic optimization requires a structural evaluation of surface geometry, especially for high-temperature high-pressure applications. S-shaped fin channels are chosen for preliminary structural assessment using numerical simulation due to the geometrical complexity and expected severe stress concentration. It is found that the excessive stress concentrations occur at tips of S-shaped fins when imposed with high-pressure differential loading. A small portion of the fin yields while the rest of the fin body remains low-stress level. The design and service limit prescribed in the ASME BPVC code is used to evaluate local stresses of the S-shaped fin, and according to the criterion, the reference model was allowed for 11.5 years of service with small portion of fin body yielded. Advisors/Committee Members: Sun, Xiaodong (Advisor).

Subjects/Keywords: Nuclear Engineering; Intermediate Heat Exchanger, Printed Circuit Heat Exchanger, Multi-Objective Optimization, Genetic Algorithms, Stress Analysis

12 more images…

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Zhang, X. (2016). THERMAL-ECONOMIC OPTIMIZATION AND STRUCTURAL EVALUATION FOR AN ADVANCED INTERMEDIATE HEAT EXCHANGER DESIGN. (Masters Thesis). The Ohio State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=osu1462891005

Chicago Manual of Style (16^th Edition):

Zhang, Xiaoqin. “THERMAL-ECONOMIC OPTIMIZATION AND STRUCTURAL EVALUATION FOR AN ADVANCED INTERMEDIATE HEAT EXCHANGER DESIGN.” 2016. Masters Thesis, The Ohio State University. Accessed January 26, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=osu1462891005.

MLA Handbook (7^th Edition):

Zhang, Xiaoqin. “THERMAL-ECONOMIC OPTIMIZATION AND STRUCTURAL EVALUATION FOR AN ADVANCED INTERMEDIATE HEAT EXCHANGER DESIGN.” 2016. Web. 26 Jan 2021.

Vancouver:

Zhang X. THERMAL-ECONOMIC OPTIMIZATION AND STRUCTURAL EVALUATION FOR AN ADVANCED INTERMEDIATE HEAT EXCHANGER DESIGN. [Internet] [Masters thesis]. The Ohio State University; 2016. [cited 2021 Jan 26]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1462891005.

Council of Science Editors:

Zhang X. THERMAL-ECONOMIC OPTIMIZATION AND STRUCTURAL EVALUATION FOR AN ADVANCED INTERMEDIATE HEAT EXCHANGER DESIGN. [Masters Thesis]. The Ohio State University; 2016. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1462891005

The Ohio State University

27. Mathiesen, Danielle Samone. Experiments, Constitutive Modeling, and Multi-Scale Simulations of Large Strain Thermomechanical Behavior of Poly(methyl methacrylate) (PMMA).

Degree: PhD, Mechanical Engineering, 2014, The Ohio State University

URL: http://rave.ohiolink.edu/etdc/view?acc_num=osu1415694651

► Poly(methyl methacrylate) (PMMA) is a transparent, biocompatible, amorphous thermoplastic with a wide variety of applications. With its relatively low glass transition temperature, T_g, and ability… (more)

▼ Poly(methyl methacrylate) (PMMA) is a transparent, biocompatible, amorphous thermoplastic with a wide variety of applications. With its relatively low glass transition temperature, T_g, and ability to maintain high aspect ratio features after processing, it is an ideal candidate for the polymer processing technique of hot embossing. Hot embossing takes advantage of the thermomechanical properties of PMMA by applying the die at temperatures greater than T_g. The highly viscous behavior of PMMA at temperatures greater than T_g reduces the required pressure to fully fill the features of the die. After cooling to a temperature less than T_g, PMMA behaves as a solid and maintains the relief shape of the stamp. Despite cooling to temperatures less than T_g, the highly viscoelastic nature of PMMA allows it to recover some of its original shape, or spring-back, after load removal. While these drastic temperature dependent material behaviors are ideal for hot embossing, they make prediction of the final feature shape extremely difficult. Previous simulations have focused on die filling without considering demolding to avoid having to capture these effects. However, without consideration of the spring-back behavior during demolding, it is impossible to know the extent of feature preservation.Therefore, the aim of this work is to develop a large strain constitutive model spanning the glass transition temperature capable of capturing the highly temperature and strain dependent spring-back behavior of PMMA with application in a micro hot embossing simulation. Large strain stress relaxation experiments are used to probe previous constitutive models to find their weaknesses. From this, a new constitutive model is developed to capture the highly temperature and strain dependent relaxation effects. Temperature and strain dependence of spring-back is investigated through modified unconfined recovery tests. Cooling is incorporated into the constitutive model using these results and then implemented into a finite element simulation to predict spring-back. Temperature dependence of PMMA is further investigated through simulations to determine its effect on spring-back.After showing the constitutive model is capable of capturing the held strain and temperature dependence of spring-back, it is used to predict the final feature shape of microchannel hot embossing. Large scale differences between the substrate and feature size require development of a multi-scale simulation technique. Boundary conditions are extracted from a representative volume element on the macro scale utilizing simplified die geometry and are applied to a micro scale simulation using actual die geometry. High feature resolution is maintained using this method while minimizing the number of elements required and reducing computation time. Simulations are verified to microchannels embossed into PMMA for use in directed cell growth experiments. By capturing the stress relaxation behavior in the constitutive model,… Advisors/Committee Members: Dupaix, Rebecca (Advisor).

Subjects/Keywords: Engineering; Mechanical Engineering; Materials Science; PMMA; Stress Relaxation; Spring-Back; Hot Embossing; Multi-Scale; FEA; Constitutive Model; Large Strain; Glass Transition

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Mathiesen, D. S. (2014). Experiments, Constitutive Modeling, and Multi-Scale Simulations of Large Strain Thermomechanical Behavior of Poly(methyl methacrylate) (PMMA). (Doctoral Dissertation). The Ohio State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=osu1415694651

Chicago Manual of Style (16^th Edition):

Mathiesen, Danielle Samone. “Experiments, Constitutive Modeling, and Multi-Scale Simulations of Large Strain Thermomechanical Behavior of Poly(methyl methacrylate) (PMMA).” 2014. Doctoral Dissertation, The Ohio State University. Accessed January 26, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=osu1415694651.

MLA Handbook (7^th Edition):

Mathiesen, Danielle Samone. “Experiments, Constitutive Modeling, and Multi-Scale Simulations of Large Strain Thermomechanical Behavior of Poly(methyl methacrylate) (PMMA).” 2014. Web. 26 Jan 2021.

Vancouver:

Mathiesen DS. Experiments, Constitutive Modeling, and Multi-Scale Simulations of Large Strain Thermomechanical Behavior of Poly(methyl methacrylate) (PMMA). [Internet] [Doctoral dissertation]. The Ohio State University; 2014. [cited 2021 Jan 26]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1415694651.

Council of Science Editors:

Mathiesen DS. Experiments, Constitutive Modeling, and Multi-Scale Simulations of Large Strain Thermomechanical Behavior of Poly(methyl methacrylate) (PMMA). [Doctoral Dissertation]. The Ohio State University; 2014. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1415694651

Swedish University of Agricultural Sciences

28. Thomsson, Ola. Sow reproduction and piglet performance in multi-suckling pens.

Degree: 2016, Swedish University of Agricultural Sciences

URL: https://pub.epsilon.slu.se/13853/

► Production systems with group housing of sows at different stages of production are increasing in Europe, as an effect of public demand for more animal… (more)

Subjects/Keywords: swine; sows; piglets; mortality; farrowing pens; stress; cortisol; oestrus; ovulation; reproductive performance; swine production; organic husbandry; cortisol; lactational oestrus; multi-suckling pen; organic piglet production; piglet mortality; stress

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Thomsson, O. (2016). Sow reproduction and piglet performance in multi-suckling pens. (Doctoral Dissertation). Swedish University of Agricultural Sciences. Retrieved from https://pub.epsilon.slu.se/13853/

Chicago Manual of Style (16^th Edition):

Thomsson, Ola. “Sow reproduction and piglet performance in multi-suckling pens.” 2016. Doctoral Dissertation, Swedish University of Agricultural Sciences. Accessed January 26, 2021. https://pub.epsilon.slu.se/13853/.

MLA Handbook (7^th Edition):

Thomsson, Ola. “Sow reproduction and piglet performance in multi-suckling pens.” 2016. Web. 26 Jan 2021.

Vancouver:

Thomsson O. Sow reproduction and piglet performance in multi-suckling pens. [Internet] [Doctoral dissertation]. Swedish University of Agricultural Sciences; 2016. [cited 2021 Jan 26]. Available from: https://pub.epsilon.slu.se/13853/.

Council of Science Editors:

Thomsson O. Sow reproduction and piglet performance in multi-suckling pens. [Doctoral Dissertation]. Swedish University of Agricultural Sciences; 2016. Available from: https://pub.epsilon.slu.se/13853/

29. Yang, Kang. Numerical and semi analytical models for electromagnetic ring expansion test : Les modèles numériques et semi-analytiques du test d’expansion d’anneau électromagnétique.

Degree: Docteur es, Advanced Mechanics : Unité de recherche en Mécanique - Laboratoire Roberval (UMR-7337), 2017, Compiègne

URL: http://www.theses.fr/2017COMP2350

► Le taux de déformation des matériaux est élevé pendant le soudage / formage à grande vitesse, le découpage, le sertissage, etc. Les propriétés des matériaux… (more)

▼ Le taux de déformation des matériaux est élevé pendant le soudage / formage à grande vitesse, le découpage, le sertissage, etc. Les propriétés des matériaux sous déformation à grande vitesse ne suivent pas la même loi que dans le cas de chargement quasi statiques. La caractérisation des matériaux à taux de déformation important est assez difficile et nécessite des équipements sophistiqués. Grâce au développement de la technologie de formage électromagnétique, le test d'expansion d'anneau électromagnétique présente un grand potentiel à utiliser pour caractériser les matériaux à haute vitesse de déformation. Pendant le test d’expansion de l’anneau électromagnétique, la pièce à usiner peut atteindre une vitesse d’expansion de l’ordre de 100m/s et une vitesse de déformation de 104 s-1. Par conséquent, ce test peut être utilisé pour prédire les paramètres du matériau, tels que la dureté et la ductilité à déformation à grande vitesse. Pour d’atteindre cet objectif, un modèle approprié décrivant le processus est nécessaire. Ce modèle doit contenir un couplage électromagnétique-mécanique-thermique pour bien décrire le problème multi-physique. Il existe deux méthodes principales de modélisation dans la littérature, viz. Les méthodes semi-analytiques et les méthodes des éléments finis (parfois combinées avec la méthode des éléments limitants). Les méthodes semi-analytiques nécessitent un temps de calcul court mais offrent une faible précision par rapport aux méthodes des éléments finis. Cependant, en raison de la complexité du couplage multi-physique, l’erreur de calcul est difficile à estimer. De plus, les déformations hétérogènes ainsi que les états de contrainte compliqués peuvent influencer l’identification. Dans ce sens, cette thèse s’est principalement concentrée sur les méthodes d’analyse et de modélisation du test d’expansion d’anneau électromagnétique, incluant les comportements locaux et les phénomènes dynamiques à l’aide des outils expérimentaux et numériques. Par ailleurs, cette thèse comprend aussi le développement d’un méthode semi-analytique permettant le couplage multi-physique, ce qui a été validé par un modèle numérique idéal et par des tests expérimentaux. Les résultats expérimentaux ont été obtenus à l’aide d’une caméra à grande vitesse et du vélocimétrie photovoltaïque Doppler (PDV) pour différents cas tests. Ils ont été utilisés pour déterminer les paramètres du processus et du matériau à l’aide des modèles numériques. Les modèles adaptés pour analyser les états de contrainte et de déformation durant le test d’expansion d’anneau montrent que ce dernier n’est pas un test de traction uniaxial pur comme revendiqué par les chercheurs. En outre, le phénomène de vibration qui se produise de la récupération élastique a été étudié par simulations multi-physiques et par systèmes PDV. Cette étude de récupération élastique permet de mieux comprendre les paramètres influençant du test, ce qui pourrait être utilisé pour contrôler le rebond dans d’autres processus électromagnétique. La méthode de modélisation… Advisors/Committee Members: Rachik, Mohamed (thesis director), Buiron, Nicolas (thesis director).

Subjects/Keywords: Test d'expansion d'anneau électromagnétique; Couplage multi-physique; État de stress; Modèle numérique; Modèle semi-analytique; Electromagnetic ring expansion test; Multi-physics coupled problem; Stress state; Vibration; Numerical model; Semi-analytical model

Record Details Similar Records Cite « Share

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Yang, K. (2017). Numerical and semi analytical models for electromagnetic ring expansion test : Les modèles numériques et semi-analytiques du test d’expansion d’anneau électromagnétique. (Doctoral Dissertation). Compiègne. Retrieved from http://www.theses.fr/2017COMP2350

Chicago Manual of Style (16^th Edition):

Yang, Kang. “Numerical and semi analytical models for electromagnetic ring expansion test : Les modèles numériques et semi-analytiques du test d’expansion d’anneau électromagnétique.” 2017. Doctoral Dissertation, Compiègne. Accessed January 26, 2021. http://www.theses.fr/2017COMP2350.

MLA Handbook (7^th Edition):

Yang, Kang. “Numerical and semi analytical models for electromagnetic ring expansion test : Les modèles numériques et semi-analytiques du test d’expansion d’anneau électromagnétique.” 2017. Web. 26 Jan 2021.

Vancouver:

Yang K. Numerical and semi analytical models for electromagnetic ring expansion test : Les modèles numériques et semi-analytiques du test d’expansion d’anneau électromagnétique. [Internet] [Doctoral dissertation]. Compiègne; 2017. [cited 2021 Jan 26]. Available from: http://www.theses.fr/2017COMP2350.

Council of Science Editors:

Yang K. Numerical and semi analytical models for electromagnetic ring expansion test : Les modèles numériques et semi-analytiques du test d’expansion d’anneau électromagnétique. [Doctoral Dissertation]. Compiègne; 2017. Available from: http://www.theses.fr/2017COMP2350

30. Guibert, Quentin. Sur l’utilisation des modèles multi-états pour la mesure et la gestion des risques d’un contrat d’assurance : On the use of multi-state models to measure and manage the risks of an insurance contract.

Degree: Docteur es, Sciences de gestion, 2015, Université Claude Bernard – Lyon I

URL: http://www.theses.fr/2015LYO10256

►

La mise en place de Solvabilité II conduit les actuaires à s'interroger sur la bonne adéquation entre modèles et données. Aussi, cette thèse a pour… (more)

▼

La mise en place de Solvabilité II conduit les actuaires à s'interroger sur la bonne adéquation entre modèles et données. Aussi, cette thèse a pour objectif d'étudier plusieurs approches statistiques, souvent méconnues des praticiens, permettant l'utilisation de méthodes multi états pour modéliser et gérer les risques individuels en assurance. Le Chapitre 1 présente le contexte général de cette thèse et permet de faire positionner ses principales contributions. Nous abordons les concepts de base liés à l'utilisation de modèles multi-états en assurance et décrivons les techniques d'inférence classiques adaptées aux données rencontrées, qu'ils soient markoviens ou non-markoviens. Pour finir, nous présentons comment il est possible d'utiliser ces modèles pour la gestion des risques de crédit. Le Chapitre 2 se concentre sur l'utilisation de méthodes d'inférence non-paramétriques pour la construction de lois d'incidence en assurance dépendance. Puisque plusieurs causes d'entrée sont susceptibles d'intervenir et d'intéresser les actuaires, nous nous concentrons sur une méthode utilisée pour l'estimation de modèles multi-états markoviens en temps continu. Nous comparons, dans un second temps, ces estimateurs à ceux utilisés classiquement par les praticiens tires de l'analyse de survie. Cette seconde approche peut comporter des biais non négligeables car ne permettant pas d'appréhender correctement l'interaction possible entre les causes. En particulier, elle comprend une hypothèse d'indépendance ne pouvant être testée dans le cadre de modèles à risques concurrents. Notre approche consiste alors à mesurer l'erreur commise par les praticiens lors de la construction de lois d'incidence. Une application numérique est alors considérée sur la base des données d'un assureur dépendance

With the implementation of the Solvency II framework, actuaries should examine the good adequacy between models and data. This thesis aims to study several statistical approaches, often ignored by practitioners, enabling the use of multi-state methods to model and manage individual risks in insurance. Chapter 1 presents the general context of this thesis and positions its main contributions. The basic tools to use multi-state models in insurance are introduced and classical inference techniques, adapted to insurance data with and without the Markov assumption, are presented. Finally, a development of these models for credit risk is outlined. Chapter 2 focuses on using nonparametric inference methods to build incidence tables for long term care insurance contracts. Since there are several entry-causes in disability states which are useful for actuaries, an inference method for competing risks data, seen as a Markov multi-state model in continuous time, is used. In a second step, I compare these estimators to those conventionally used by practitioners, based on survival analysis methods. This second approach may involve significant bias because the interaction between entry-causes cannot be appropriately captured. In particular, these approaches…

Advisors/Committee Members: Planchet, Frédéric (thesis director).

Subjects/Keywords: Modèle multi-états; Modèle à risques concurrents; Estimation non-paramétrique; Hypothèse de Markov; Assurance dépendance; Matrice de transition; Stress-tests; Assurance crédit; Multi-state model; Competing risks data; Nonparametric estimation; Markov assumption; Long term care insurance; Transition matrix; Stress tests; Credit insurance; 658.404

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Guibert, Q. (2015). Sur l’utilisation des modèles multi-états pour la mesure et la gestion des risques d’un contrat d’assurance : On the use of multi-state models to measure and manage the risks of an insurance contract. (Doctoral Dissertation). Université Claude Bernard – Lyon I. Retrieved from http://www.theses.fr/2015LYO10256

Chicago Manual of Style (16^th Edition):

Guibert, Quentin. “Sur l’utilisation des modèles multi-états pour la mesure et la gestion des risques d’un contrat d’assurance : On the use of multi-state models to measure and manage the risks of an insurance contract.” 2015. Doctoral Dissertation, Université Claude Bernard – Lyon I. Accessed January 26, 2021. http://www.theses.fr/2015LYO10256.

MLA Handbook (7^th Edition):

Guibert, Quentin. “Sur l’utilisation des modèles multi-états pour la mesure et la gestion des risques d’un contrat d’assurance : On the use of multi-state models to measure and manage the risks of an insurance contract.” 2015. Web. 26 Jan 2021.

Vancouver:

Guibert Q. Sur l’utilisation des modèles multi-états pour la mesure et la gestion des risques d’un contrat d’assurance : On the use of multi-state models to measure and manage the risks of an insurance contract. [Internet] [Doctoral dissertation]. Université Claude Bernard – Lyon I; 2015. [cited 2021 Jan 26]. Available from: http://www.theses.fr/2015LYO10256.

Council of Science Editors:

Guibert Q. Sur l’utilisation des modèles multi-états pour la mesure et la gestion des risques d’un contrat d’assurance : On the use of multi-state models to measure and manage the risks of an insurance contract. [Doctoral Dissertation]. Université Claude Bernard – Lyon I; 2015. Available from: http://www.theses.fr/2015LYO10256

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Open Access Theses and Dissertations