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1
Cedergren, Linnéa. "Physics-informed Neural Networks for Biopharma Applications." Thesis, Umeå universitet, Institutionen för fysik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-185423.
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Physics-Informed Neural Networks (PINNs) are hybrid models that incorporate differential equations into the training of neural networks, with the aim of bringing the best of both worlds. This project used a mathematical model describing a Continuous Stirred-Tank Reactor (CSTR), to test two possible applications of PINNs. The first type of PINN was trained to predict an unknown reaction rate law, based only on the differential equation and a time series of the reactor state. The resulting model was used inside a multi-step solver to simulate the system state over time. The results showed that the PINN could accurately model the behaviour of the missing physics also for new initial conditions. However, the model suffered from extrapolation error when tested on a larger reactor, with a much lower reaction rate. Comparisons between using a numerical derivative or automatic differentiation in the loss equation, indicated that the latter had a higher robustness to noise. Thus, it is likely the best choice for real applications. A second type of PINN was trained to forecast the system state one-step-ahead based on previous states and other known model parameters. An ordinary feed-forward neural network with an equal architecture was used as baseline. The second type of PINN did not outperform the baseline network. Further studies are needed to conclude if or when physics-informed loss should be used in autoregressive applications.
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Caple, Christopher. "An analytical appraisal of copper alloy pin production: 400-1600 AD : the development of the copper alloy, pin industry in Britain during the post-Roman period, based on analytical, metallographic and typological examination with consideration of historical and archaeological archives." Thesis, University of Bradford, 1986. http://hdl.handle.net/10454/3423.
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Pureswaran, Deepa S. "Dynamics of pheromone production and communication in the mountain pine beetle, Dendroctonus ponderosae Hopkins and the pine engraver, Ips pini (Say) (Coleoptera: Scolytidae)." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ51452.pdf.
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Grenon, Frank. "Relation entre la présence du nodulier (Petrova albicapitana) et les diminutions de la croissance du pin gris (Pinus banksiana) /." Thèse, Chicoutimi : Université du Québec à Chicoutimi, 1998. http://theses.uqac.ca.
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Young, Anna Gilg. "The isolation and characterization of geranyl diphosphate synthase from the pine engraver, Ips pini (Coleoptera: Scolytidae) /." abstract and full text PDF (UNR users only), 2004. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3164670.
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Hodnett, Kyle. "Mating and fitness consequences of breeding aggregations in pine engraver bark beetles, Ips pini (Coleoptera: scolytidae)." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/MQ65104.pdf.
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Pei, Ming Hao. "Peridermium pini (Pers.) Lév.-Axenic culture and infection of pine callus tissue cultures and young seedlings." Thesis, University of Aberdeen, 1989. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU553195.
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Axenic cultures of Peridermium pini have been established on modified Shenk &'38 Hilderbrandt's and Harvey &'38 Grasham's media from naturally infected cortex tissues and aeciospore-infected calluses of P. sylvestris and from aeciospores collected from NE Scotland and East Anglia. The cultures occasionally produced immature smooth-surfaced, binucleate spores. Actively growing cultures infected P. sylvestris calluses but not seedlings or trees. In the experiment of fungal nutrition, (NH4)2SO4 appeared essential, sucrose, D-glucose, raffinose and D-sorbitol supported good growth while D-xylose, cellobinose and L-arabinose did not. Opt. medium pH proved to be 5.0-6.0. Axenic cultures were also obtained from 30-40&'37 of single sporelings of some East Anglia spore sources but not from NE Scotland sporelings. When inoculated at a high density, however, all spore sources from both East Anglia and NE Scotland readily formed colonies. Colonies from East Anglia spores mostly appeared smooth at the surface and distinct around margin while those from NE Scotland sources had fluffy surface and irregularly extended periphery. Rapidly expanding hyphal layers developed from both of the colony forms 3 months after inoculation. Callus tissue cultures of P. sylvestris, P. nigra var. maritima and P. mugo vars mughus, rostrata and pumilio were infected by inoculation with aeciospores from NE Scotland. Infections were characterized by formation of aerial hyphae on the callus surface and intercellular hyphae and typical haustoria in the callus tissue. Hyphae from some of the infected calluses penetrated the medium. Seedlings of the pines as above were infected at their cotyledon stage by inoculation with NE Scotland spores. Infections resulted in swelling, death of the seedlings and formation of spermogonia after a year and aecia after two years. Infections of young seedlings of 7 seed sources of P. sylvestris and the UK were examined 6 weeks after inoculation. Discolouration and necrosis of cotyledons were not always related to stem infection.
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Robertson, Ian Charles. "Paternal care in the pine engraver, Ips pini (Coleoptera: Scolytidae), and the implications of variable reproductive potential for population dymamics." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/NQ37748.pdf.
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Evrard, Alexandre. "Etude des interactions cellulaires des puroindolines et étude de la régulation de l'expression des gènes PinA et PinB de blé." Montpellier, ENSA, 2003. http://www.theses.fr/2003ENSA0012.
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Les puroindolines sont des protéines de 13 kDa qui sont impliquées entre autre dans la friabilité du grain de blé tendre. La fonction cellulaire des puroindolines et la régulation de l'expression des gènes qui les codent sont peu des domaines de recherche peu explorés. Nous avons donc étudié les interactions cellulaires des puroindolines dans un système hétérologue, la levure Saccaromyces cerevisiae. Les puroindolines ne forment pas d'homodimères ni d'hétérodimères mais elles interagissent in vivo avec la membrane plasmique de la levure. Par mutagénèse dirigée nous avons montré que pour la puroindoline-a cette interaction implique le domaine riche en tryptophane, alors que ce n'est le cas pour la puroindoline-b. Parallèlement, les promoteurs des gènes PinA et PinB ont été étudiés dans des riz transgéniques. Alors que le gène PinB s'exprime uniquement dans le grain, le gène PinA s'exprime aussi dans d'autres organes et est inductible par blessure dans les tiges et les feuilles de rizPuroindolines are 13kDa proteins, involved in wheat grain softness. Nethertheless, Cell function and Pin genes expression regulation are not very well documented. Puroindolines cell interactions were studied in the yeast Saccaromyces cerevisiae. Puroindolines do not form homo or heterodimer but interact in vivo with the yeast plasma membrane. Site directed mutagenesis approach highlighted that the tryptophan rich domain of puroindoline-a is involved in this interaction but not in the case of puroindoline-b. In parallel, promoter of both PinA and PinB genes were studied in transgenic rice plants. PinA and PinB genes are expressed in the grain and regulated during development. Whereas PinB gene expression is grain specific, PinA gene is expressed also in other organs is wound induced in stems and leaves
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Goodall, Benjamin. "Identification of novel factors contributing to the regulation of PIN-FORMED 7 (PIN7) transcription, in the Arabidopsis root." Thesis, University of Nottingham, 2018. http://eprints.nottingham.ac.uk/50036/.
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Understanding root development and patterning is important for both nutrient and water uptake. The Arabidopsis thaliana primary root has a di-arch vascular pattern consisting of a central xylem axis, perpendicular phloem poles and intervening procambial cells. Governance of this pattern involves a dynamic, antagonistic interaction between domains of auxin and cytokinin signalling bias. Here, one element of this auxin-cytokinin relationship; cytokinin’s indirect transcriptional regulation of the auxin PIN-FORMED 7 (PIN7) efflux transporter, has been investigated. Two complementary strategies were employed; transcriptomic profiling of an Type-B ARABIDOPSIS RESPONSE REGULATOR (ARR) response (the last known components in the core cytokinin signalling machinery) via an inducible glucocorticoid system, and an EMS mutagenesis based forward genetic screen of reduced PIN7::PIN7:GFP expression and subsequent genomic resequencing to identify potential causative agents. Both workflows produced novel candidate PIN7 regulators and the ensuing candidate validation revealed ETHYLENE RESPONSE FACTOR 104 (ERF104), CYTOKININ OXIDASE/DEHYDROGENASE 5 (CKX5) and the ECA1-like AT5G36520 from its vascular over-expressor DOUBLE PROTOXYLEM (DPX) phenotype, in particular as strong contenders for components involved in the regulation of PIN7 and patterning of the vascular cylinder.
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Garcés, Cea Marcelo Arnoldo. "Proteomic study of wood formation in maritime pine." Thesis, Bordeaux 1, 2008. http://www.theses.fr/2008BOR13633/document.
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Les propriétés du bois de pin maritime varient aux niveaux chimique, anatomique et mécanique. Six types de bois peuvent être trouvés au sein d’un même arbre : bois précoce, bois tardif, bois de couronne, bois de base, bois de compression et bois opposé. Au cours de cette thèse, nous avons testé l’hypothèse selon laquelle la variabilité phénotypique des propriétés de bois, serait liée à l’expression différentielle des protéines lors de la xylogénèse. Par une approche protéomique basée sur l’électrophorèse bidimensionnelle et la spectrométrie de masse en tandem (LC ESI MS/MS), nous avons identifié 165 protéines différentiellement exprimées le long d’un gradient d’âge cambial (bois juvénile vs. bois mature) ainsi que 93 protéines différentiellement exprimées au cours de la saison de végétation (bois de printemps vs. bois d’été) chez le pin maritime. Une analyse chimique complémentaire des échantillons a été réalisée par pyrolyse analytique. Nos résultats montrent que le xylème secondaire formé en début de saison ainsi que celui qui est initié par un cambium jeune présentent une sur-expression de protéines participant à la division cellulaire. Dans le xylème issu d’un cambium âgé ou formé à la fin de l’été nous avons mis en évidence des protéines impliquées dans la défense cellulaire (dont le rôle serait de retarder la mort cellulaire programmée), ainsi que des protéines impliqués dans la biosynthèse des éléments constitutifs de la paroi. Cette étude contribue à renforcer nos connaissances sur les acteurs moléculaires intervenant lors de la xylogénèse. Elle ouvre par ailleurs des pistes de recherche sur la détection de gènes impliqués dans le contrôle génétique des propriétés du bois dans un objectif de sélection assisté par marqueursWood properties in maritime pine are highly variable at chemical, anatomical and mechanical levels. Six types of wood can be found in a single tree, early wood, late wood, crown wood, base wood, compression wood and opposite wood. In this thesis report, we tested the hypothesis that the observed variability at the phenotypic level, can be bound to the differential expression of proteins during the process of wood formation. We use the tools of proteomics, Bidimensional electrophoresis and LC ESI MS/MS for the discovery of 165 proteins differentially expressed in a cambial age gradient, (from base wood to crown wood), an 93 overexpressed proteins in a seasonal gradient (from early wood collected at the beginning of the growing season, to late wood, collected at summer) Complementary, chemical characterization of the samples was performed using analitycal pyrolisis. Our results showed that the secondary xylem formed at the beginning of the growing season, and the xylem formed by a young cambium, present a overexpression of proteins participating in the intense cell division, characteristical of those tissues, e.g. Biogenesis of cytoskeleton and hemicelluloses, RNA transcription, synthesis, folding and modification of proteins. In the xylem formed at the base of the trunk and at the end of the growing season we have found an over-expression of proteins from cell defense (they role will be to delay programmed cell death) and cell wall formation related proteins e.g. lignin biosynthesis. This study contributes to reinforce our knowledge over the molecular actors involved in the xylogenesis process. It opens, in another hand , research guides for the detection of genes involved in the genetic control of wood properties towards an objecive of marker assisted selection
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Cabaret, Thomas. "L'exsudation de la résine dans le bois de pin maritime (pinus pinaster) : étude et mise en place d'un système de prévention." Thesis, Pau, 2018. http://www.theses.fr/2018PAUU3034/document.
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Les travaux réalisés lors de cette thèse s’effectuent dans le cadre du projet FIXAPIN. Ce projet, financé par la région Nouvelle Aquitaine, est mené en collaboration avec différentes entreprises (Gascogne Bois, Bardage Bois Neoclin, Lesbats Scieries d’Aquitaine, Scierie Labadie et FPBOIS) spécialisées dans le domaine du sciage du bois de pin maritime et l'Institut technologique FCBA. L’objectif du projet est de limiter voire d’empêcher l’exsudation de la résine généralement observée sur la surface des planches de bois de pin maritime utilisées en extérieur comme bardage. L’exsudation de la résine est un frein important à l’utilisation de ce bois en extérieur et ces recherches s’inscrivent dans une démarche d’amélioration continue de la qualité des produits de la filière du pin maritime.Le bois de pin maritime peut présenter un taux de résine supérieur à 10 % de sa masse. La résine est constituée d’environ 70 % de colophane (fraction solide) et de 30 % d’essence de térébenthine (fraction liquide et volatile). À la suite d’essais préliminaires, les recherches réalisées lors de cette thèse se sont concentrées sur l’optimisation du cycle de séchage du bois afin de fixer la résine dans les planches. Les propriétés thermiques de la résine associée à des analyses physico-chimiques ont été étudiées afin de mettre en place des procédures de séchage optimisées ayant pour but d’augmenter la température de ramollissement de la résine à un seuil supérieur à la température maximum atteignable par un bardage extérieur.Les résultats ont permis de démontrer l’efficacité d’un séchage/traitement thermique du bois à haute température (> 120 °C) permettant d’envisager la poursuite de ces travaux aux échelles pilotes puis industrielles. De plus, des séchages longs à basse température (< 60 °C) peuvent également représenter une voie prometteuse concernant le séchage du bois en séchoir traditionnelThe work realised in the context of this thesis is carried out within the FIXAPIN project. This project, funded by the Nouvelle Aquitaine council, is carried out in collaboration with several companies (Gascogne Bois, Bardage Bois Neoclin, Lesbats Scieries d'Aquitaine, Scierie Labadie and FPBOIS) specialized in the sawing of maritime pine wood and the FCBA Technological Institute.The aim of the project is to limit or even to prevent the exudation of the resin generally observed on the surface of maritime pine wood boards used outdoors as wood siding. The resin exudation is a major constraint to the external use of this wood and this research project is part of a continuous improvement process of the maritime pine products quality.Maritime pine wood can have a resin amount greater than 10% of its mass. The resin consists approximately of 70% rosin (solid fraction) and 30% turpentine (liquid and volatile fraction). Based on preliminary tests, the research carried out during this thesis focused on optimizing the wood drying process in order to fix the resin in the wood boards. The thermal properties of the resin associated with physico-chemical analyses were studied in order to implement optimized drying procedures to increase the resin softening temperature to a threshold higher than the maximum temperature attainable by an exterior siding.The results have demonstrated the effectiveness of drying / heat treatment of wood at high temperature (> 120 ° C) to allow the pursuit of this work at pilot than industrial scales. Furthermore, long drying at low temperatures (<60 ° C) may also be a promising approach regarding the wood drying process in traditional kilns
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Sossi, Vesna. "Pion induced pion production on deuterium." Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/31516.
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This thesis describes measurements of the pion induced pion production reaction π⁺d → π⁺π⁻p p performed with a 280 MeV incident π⁺ beam at TRIUMF. The data are compared with an improved version of the Oset and Vicente-Vacas theoretical model [12].
The goal of the experiment and of the analysis was to provide a larger body of data for the free reaction and to test the validity of theoretical models. In the process, the ability to determine the values of the coupling constants C, f∆ , gN*∆π within such a model framework would be explored. The knowledge of the precise value of these coupling constants would constrain N* decay branching ratios and other pion induced reaction mechanisms like Double Charge Exchange.
A previous experiment [23] had indicated that the pion induced pion production on deuterium is essentially a quasifree process with the reaction occurring on the neutron leaving the proton merely a spectator. The main difference with respect to the free reaction is the effect of Fermi motion of the neutron. Although we were interested in studying the free reaction (π⁻p → π⁺π⁻n), we chose a deuterium target so that the experiment could be run with a π⁺beam, since the π⁻ beam flux is about 6 times lower than the flux of the positive pion beam at 280 MeV, the energy at which our experiment was performed. Such a flux would have required a much longer running time for the experiment in order to achieve the same statistical accuracy. The quasifree nature of the process was also confirmed in our experiment.
This experiment involved a coincidence measurement of the quasifree process and as such provided four-fold differential cross section spectra of the reaction thus allowing
for a microscopic comparison between data and theoretical models. In the theoretical description we incorporated additional amplitudes for the N* → N(ππ)p-wave diagrams required to describe the reaction cross section at Tπ = 280 MeV. We also added the Fermi motion of the nucleon to the model to account for the deuterium environment. The 'free' parameters of the model are the largely unknown coupling constants listed above. We fixed C to be -2.08 by requiring the energy dependence of the model to be that of the measurement of [22] and compared the energy and angular distributions of the model to our data for several values of the f∆ and gN*∆π coupling constants ranging between 0 and 2 (where the units are 4/5 fNNπ) and between 1.08 and 1.53 respectively. We found reasonable sensitivity of the model to the f∆ variation, but only limited sensitivity to the value of the gN*∆π coupling constant. Overall we achieved a very good agreement between data and the theoretical predictions for f∆ values smaller than 0.5 and gN*∆π values closer to its lower limit. Improved statistical accuracy of the data would however be needed to better constrain the values of the coupling constants. On the basis of our results we feel that this model is a useful tool for planning future experiments and that a more extensive (π, 2π) experimental program, where differential cross sections are measured for differing isospin channels, would provide a further, more stringent test on the model allowing for a more precise determination of the coupling constants.Science, Faculty of
Physics and Astronomy, Department of
Graduate
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Viens, Élysabeth. "Effets de l'éclaircie commerciale sur la croissance et la forme de la tige du pin gris (Pinus banksiana Lamb.) en Abitibi, Québec /." Thèse, Chicoutimi : Université du Québec à Chicoutimi, 2001. http://theses.uqac.ca.
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Fortin, Marie-Noëlle. "Étude descriptive des relations de croissance entre la tige, la racine pivotante et les racines horizontales chez le pin gris (Pinus banksiana) dans la région du Lac Saint-Jean, Québec /." Thèse, Chicoutimi : Université du Québec à Chicoutimi, 2004. http://theses.uqac.ca.
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Francès, Manon. "Étude de la mise au point d'un vernis industriel à base de colophane et d'huile végétale." Thesis, Pau, 2019. http://www.theses.fr/2019PAUU3045.
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Le sujet de cette thèse est la mise au point d’un vernis industriel à base de colophane et d’huile végétale. Le but est de développer l’utilisation de la colophane issue de la résine de pin maritime pour fabriquer un vernis en se basant sur la connaissance des savoir-faire anciens (Tirat 2016). Nous nous sommes intéressés aux vernis employés à la fin du XVIIème et au début du XVIIIème siècle par le luthier Antonio Stradivari. Ses vernis d’une qualité exceptionnelle étaient obtenus à partir de colophane de pin et d’huile de lin (Echard 2010). La thèse consiste à s’inspirer de ces techniques anciennes pour fabriquer un vernis biosourcé industrialisable et de performances élevées, tout en utilisant la ressource locale, la résine de pin maritime des Landes. La thèse se déroule dans le cadre du projet collaboratif Stradivernis labellisé Xylofutur qui associe l’Université de Pau et des pays de l’Adour, la Cité de la musique (Paris), le FCBA, l’Université de Créteil, les entreprises Holiste (Biscarosse), Concept Aquitaine (Bordeaux), Finsa (Morcenx), Meubles Goisnard (Belin-Beliet) et l’association Api’Up (Capbreton). Les matières premières utilisées sont l’huile de lin crue (Onyx) et la colophane issue de la résine de pin maritime de Biscarosse (Société Holiste, Landes). Après distillation de la résine à basse pression et basse température, les mesures du taux de térébenthine résiduel dans la gemme sont réalisées avec un analyseur thermogravimétrique. Les huiles et les colophanes sont traitées thermiquement avec une plaque chauffante et la température réelle de l’huile est mesurée avec un thermocouple. Les vernis sont ensuite formulés avec de l’huile de lin, de la colophane et des additifs et mélangés grâce à un agitateur magnétique chauffant. Les formulations sont appliquées au pinceau et polymérisées avec des lampes UVA. Les couleurs des films sont mesurées avec un spectrocolorimètre (Ci62, X-rite). La brillance est mesurée avec un brillancemètre (micro-gloss, BYK Gardner). La résistance à l’arrachement est mesurée avec un testeur d’adhérence à l’arrachement de la marque (TA, Positest).Les analyses sont réalisées avec les appareils suivants : analyse calorimétrique différentielle par balayage (DSC Q20, TA instruments), analyseur thermogravimétrique (Q500, TA instruments), HPLC (DAD Ultimate 3000 Thermo Scientific) et un spectromètre de masse Orbitrap (Thermo-Fisher, LTQ Orbitrap Velos).Les expériences menées se sont portées sur trois axes :- Les traitements thermiques de l’huile de lin et leurs influences sur le film de vernis. Cinq traitements ont été testés : l’huile crue, deux traitements thermiques inférieurs à 200°C, un rinçage de l’huile à l’eau avant un traitement thermique inférieur à 200°C, et une standolisation à 400°C sous azote.- Les traitements thermiques de la colophane et leurs influences sur le film de vernis. Quatre traitements ont été testés : la colophane crue et trois traitements thermiques 180°C, 200°C et 250°C pendant 30 minutes.- L’ajout d’additifs minéraux et leurs influences sur la polymérisation et la qualité du film de vernis.Les traitements thermiques sur l’huile et la colophane semblent influer sur la qualité du film de vernis, notamment sur sa brillance et sa résistance aux solvants. L’ajout d’additifs améliore considérablement le temps de séchage du film et ses caractéristiques techniques. Un dépôt de savoir-faire est en cours sur ces formulations avec additifsThe aim of this project is to study the development of an industrial varnish with rosin and vegetal oil. The objective is to develop the uses of maritime pine rosin in order to make a varnish based on antique knowledge (Tirat 2016). The varnish used at the end of the XVIIe and at the beginning of the XVIIIe century by the violinmaker Antonio Stradivari get our attention. It has an exceptional quality and was made with a mixture of rosin and linseed oil (Echard 2010). On this knowledge basis, we would like to produce an industrialized biobased varnish with high performance. This work is part of the collaborative project Stradivarius, labelled Xylofutur, which associate the University of Pau and Adour region, the “Cité de la musique” (Paris), the FCBA (Bordeaux), Créteil university, Concept Aquitaine (Bordeaux), Finsa (Morcenx), Biogemme-Holiste (Biscarosse), Meubles Goisnard (Belin-Beliet) and the association Api’Up (Capbreton).The raw materials are linseed oil (Onyx) and maritime pine rosin colophony from Biscarosse (Holiste). After resin drying between 120°C and 180°C, the residual turpentine in the rosin were analyzed with a thermogravimetric analyzer (TGA). The oils and rosins are heat treated with a stirring hot plate and the real temperature was obtained with a thermocouple.Then, various varnishes were formulated with linseed oil, colophony and additives thanks to a stirring hot plate. They were applied with a brush and polymerized with UVA lamps. The film colors were measured with a spectrophotometer (Ci62, X-rite). The brightness was measured using a gloss meters (micro-gloss, BYK Gardner). Adhesion test was performed using a pull-off adhesion tester (TA, Positest).The analysis were realised using the following devices : thermomechanical analysis (, Mettler Toledo), thermogravimetric Analysis (TGA Q500, TA instruments), high-performance liquid chromatography (Ultimate 3000, Thermo Scientific), differential scanning calorimetry (DSC Q20, TA instruments) and an electrospray hybrid linear ion Orbitap mass analyzer (LTQ Orbitrap Velos, Thermo-Fisher).The experiments have been carried on three axes :- Heat treatment on linseed oil and the influences on the varnish. Five treatments have been tested : raw oil, two heat treatments lower than 200°C, a flushing with water before a heat treatment lower than 200°C, and a standolization at 400°C under nitrogen.- Heat treatment on rosin and the influences on the varnish. Four treatments have been tested : raw rosin, and three heat treatments, 180°C, 200°C and 250°C during 30 minutes.- Addition of minerals additives and their influences on the curing and the quality of the varnish.The heat treatments on both linseed oil and rosin seems to have an influence on the varnish quality, especially on its brightness and its solvent resistance. The addition of additives considerably improve the curing time and the varnish quality. A know-how deposit is in progress for this formulation with additives
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Camargo, Sergio Luiz da Silveira. "Análise biomecânica de resistência à fratura em dentes caninos artificiais de cães, com restauração metálica fundida e retentores intrarradiculares retos e curvos com núcleo - Estudo comparativo com análise por elementos finitos." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/10/10137/tde-24052016-092307/.
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Os cães, por fatores diversos, acabam por apresentar dentes fraturados com ou sem exposição de polpa. Estas fraturas basicamente são identificadas como fraturas recuperáveis não complicadas, recuperáveis complicadas ou irrecuperáveis. As fraturas recuperáveis (localizadas apenas no esmalte e dentina) são tratadas com dentística restauradora. As recuperáveis complicadas (com lesões em esmalte, dentina e exposição do canal radicular) passam por tratamento endodôntico, podendo ser seguidas de restaurações metálicas. Os dentes mais comumente acometidos são os dentes caninos, superiores ou inferiores. Este trabalho em dentes artificiais simulando considerável destruição de sua porção coronal objetivou testar, após a adaptação da restauração metálica fundida, a resistência às fraturas no dente canino. Os dentes artificiais foram padronizados com uma técnica de replicação de raízes artificiais em molde de resina acrílica quimicamente ativada. Oitenta réplicas iguais de resina composta fotopolimerizável, padronizadas em tamanho e forma, foram construídas a partir desta técnica. Antes da reconstrução protética, aplicou-se o tratamento endodôntico, desobturação, preparo do canal radicular e moldagem. Proteticamente, um pino intrarradicular reto e outro curvo, ambos com núcleo para sustentar a coroa metálica fundida foram cimentados na porção coronal de cada raiz-réplica. Os núcleos e coroa metálica foram ambos ferulados ou estojados. Avaliou-se os dois tipos de restauração com pino intrarradicular curvos ou retos cimentados com cimento de fosfato de zinco ou resinoso para identificar o melhor conjunto restaurador. Os testes de resistência biomecânica de 80 raízes-réplicas foram divididos em 4 grupos com 20 corpos de prova para cada um dos grupos. Grupo 1: das raízes-réplicas com pino intrarradicular curvo cimentados com cimento resinoso. Grupo 2: das raízes-réplicas com pino intrarradicular curvo cimentados com cimento de fosfato de zinco. Grupo 3: das raízes-réplicas com pino intrarradicular reto cimentados com cimento resinoso. Grupo 4: das raízes-réplicas com pino intrarradicular reto cimentados com cimento de fosfato de zinco. Estes grupos foram submetidos a teste de força com pré-carga de 1,5 N, com velocidade de avanço constante de 0,05 mm por minuto em ponto pré- determinado (mésio-lateral vestibularizada) até ocorrência de fratura do conjunto ou parte dele em uma Máquina Universal Kratos. Com a avaliação biomecânica e estudo estatístico de Kruskall-Wallis, identificou-se que os dados obtidos não seguiram distribuição normal. Esta diferença mostrou-se com o p<0,05 na interpretação do teste. No caso de dados não paramétricos o post-hoc do Kruskal-Wallis foi o teste de U de Mann-Withney. Paralelamente, um estudo com análise de elementos finitos comparou os resultados obtidos. Não houve diferença significativa sobre o tipo de cimento utilizado ou que favorecesse o uso do pino reto ou do pino curvo, recaindo a escolha para o operador decidir de acordo com a melhor indicação para cada caso clínicoThe dogs, by various factors, present fractured teeth with or without pulp exposure. These fractures are basically identified as recoverable fractures not complicated, recoverable complicated or unrecoverable. Recoverable fractures (located just on enamel and dentin) are treated with restorative dentistry. The complicated recoverable (with lesions in enamel, dentin and exposure of the root canal) need to undergo endodontic treatment, and may be followed by metallic restorations. The teeth most commonly affected are the canine teeth, upper or lower. This work on artificial teeth simulating considerable destruction of their coronal portions aimed to test, after the adaptation of the cast metal restoration, the fractures in the canine teeth. Artificial teeth were standardized with an artificial root replication technique in acrylic chemically activated resin impression. Eighty equal photopolimerized composite resin replicas, standardized in size and shape, were built with this technique. Before the prosthetic reconstruction, endodontic treatment, desobturation, root canal preparation and molding were done. Protetically an intrarradicular straight pin and another curved one, both to sustain core fused metal crown were cemented over the crown of each root replica. The cores and metal crown were both belted or sheathed. It was evaluated the two types of restorations with intrarradicular curved or straight pin cemented with zinc phosphate cement or resin to identify the best restorative set. The biomechanical resistance tests applied over the 80 replica roots were divided into 4 groups with 20 samples for each of the groups. Group1: roots with intrarradicular curved pin replicas cemented with resin cement. Group 2: roots with intrarradicular curved pin replicas cemented with zinc phosphate cement. Group 3: roots intrarradicular straight pin replicas cemented with resin cement. Group 4: roots intrarradicular straight pin replicas cemented with zinc phosphate cement. These groups were submitted to the test of strength with 1.5 N preload force, with constant speed rate of 0.05 mm per minute in a predetermined point (mesio-vestibular) until occurrence of fracture of the whole set or part of it in a Universal Machine Kratos. The Biomechanical evaluation and statistical study of Kruskall-Wallis, identified that the data obtained did not follow normal distribution. That difference showed up with the p < 0.05 in the interpretation of the test. In the case of parametric data post-hoc Kruskal-Wallis test of U of Mann-Whitney. At the same time, a study with finite element analysis compared the results obtained. There was no significant difference on the type of cement used or favoring the use of straight or curved intrarradicular pin, therefore it is up to the surgeon to decide according to the best indication for each clinical case
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Gomez, Ana Carolina. "Estudo do desgaste de nanocompósitos de alumina-zircônia usando variação de parâmetros no ensaio pino-no-disco." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/74/74133/tde-23022018-084836/.
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O desgaste é responsável por um grande número de falhas em materiais, provocando a sua substituição antecipada e consequentemente diminuindo a sua vida útil. Por isso, estudos são realizados para caracterizar os limites de utilização desses materiais, evitando assim situações catastróficas. A partir das variáveis e parâmetros envolvidos no ensaio de desgaste, é possível construir mapas que tem como finalidade direcionar para uma correta escolha do material, de acordo com a aplicação desejada, além de identificar o seu comportamento frente à determinadas condições de uso. Neste contexto, este trabalho teve como objetivo conhecer o comportamento de desgaste de nanocompósitos de alumina contendo 5% de inclusões nanométricas de zircônia, visando construir um diagrama de transição de desgaste entre os limites de combinação de velocidade de deslizamento e carga aplicada. Para isso, corpos de prova conformados na forma de pinos com uma das extremidades semiesféricas foram caracterizados quanto a dureza e tenacidade à fratura, submetidos ao ensaio de desgaste do tipo pino-no-disco com temperaturas e umidades ambientes, variando os parâmetros de velocidade e carga. As velocidades de deslizamento variaram de 1,2 m/s à 0,1 m/s e as cargas variaram de 2 N à 100 N. Os valores de dureza e tenacidade a fratura obtidos foram de 14,08 ± 1,22 GPa e 3,99 ± 0,14 MPa.m1/2, respectivamente. Os resultados de desgaste mostraram que a partir da caracterização e construção do diagrama de transição de regime de desgaste, com combinações de parâmetros extrínsecos de carga e velocidade de deslizamento, foi possível definir e atingir as condições limites entre o regime de desgaste moderado e a transição para o regime severo. Esse diagrama auxilia na seleção e comparação da transição entre os limites de desgaste do material estudado com outros tipos usados na engenharia.Wear is responsible for a large number of material failures, causing them to be replaced early and consequently shortening their life-time. Therefore, studies are conducted to characterize the limits of use of these materials, thus avoiding catastrophic situations. From the variables and parameters involved in the wear test, it is possible to construct maps that aim to direct the correct choice of material according to the desired application, as well as to identify its behavior against certain conditions of use. In this context, the objective of this work was to know the wear behavior of alumina nanocomposites containing 5% nanometric zirconia inclusions in order to construct a simplified wear transition diagram between the sliding speed and applied load combination limits. For this, test pieces shaped like pins with semi-spherical tips were characterized in terms of hardness and fracture toughness, took to the wear test of the pin-on-disk with ambient temperatures and humidity, varying the speed and load parameters. Slip velocities ranged from 1.2 m/s to 0.1 m/s and loads ranged from 2 N to 100 N. The values of hardness and fracture toughness obtained were 14.08 ± 1.22 GPa and 3.99 ± 0.14 MPa.m1/2, respectively. The results of wear showed that from the characterization and construction of the wear regime transition diagram, with combinations of extrinsic load parameters and slip speed, it was possible to define and reach the boundary conditions between the moderate wear regime and the transition for the severe regime. This diagram helps in the selection and comparison of the transition between the wear limits of the studied material with other types used in engineering.
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Horn, Tanja. "The pion charge form factor through pion electroproduction." College Park, Md. : University of Maryland, 2006. http://hdl.handle.net/1903/3486.
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Thesis (Ph. D.) -- University of Maryland, College Park, 2006.Thesis research directed by: Physics. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
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Duggal, Arti. "Molecular identification of Fusarium species occurring on white pine seedlings and methods to differentiate pathogenic and nonpathogenic isolates of Fusarium oxysporum f.sp. pini." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ35151.pdf.
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Lara-Chavez, Alejandra M. "Somatic embryogenesis in southern and tropical pine species: Loblolly pine (Pinus taeda), Longleaf pine (P. palustris) and Oocarpa pine (P. oocarpa)." Diss., Virginia Tech, 2010. http://hdl.handle.net/10919/77176.
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The focus of the current project was to establish an improved and reliable protocol for somatic embryogenesis in 1) Pinus taeda and Pinus palustris; pine species of high value for commercial applications and germplasm conservation supported through breeding programs at The Virginia Department of Forestry (Chapter III); and 2) Pinus oocarpa; an economically important pine species in the southern half of Mexico and Central America (Chapter IV). In addition, 3) the study of the gene expression analysis of developmental stages of both somatic and zygotic embryos of P. taeda was compared to assess developmental fidelity at the molecular level (Chapter V). By testing four basal media combined with different plant growth regulator combinations, we have established stable embryogenic cultures from high value families of P. taeda and P. palustris using the tissue culture medium 1218 (Pullman et al 2005) in combination with an auxin:citokinin ratio at 10:5 (molar). However, optimization of the protocols for the maturation and further conversion of somatic embryos to seedlings requires further work. For P. oocarpa, we hypothesized that somatic embryo induction may be possible by mimicking natural seed-embryo developmental conditions, and a new tissue culture medium, based on the mineral content of the seed nutritive tissue (megagametophyte), was formulated. The novel culture medium (PO) was tested in combination with different plant growth regulator concentrations for the initiation of somatic embryogenesis from fresh collections of P. oocarpa immature zygotic embryos. Additionally, the established embryogenic cultures were able to mature and germinate, to our knowledge resulting in the first report of the production of P. oocarpa plantlets through somatic embryogenesis. PO medium also has the potential to be used successfully for other tropical pine species which today suffer from suboptimal somatic embryogenesis protocols. The fundamental study of molecular regulation of embryo development showed that under the current maturation conditions, P. taeda somatic embryos were temporally similar in gene expression to zygotic embryos of the same species. However, potentially important differences were found and results could potentially explain the low germination success during somatic embryogenesis. More research is still needed to further explore the natural environment of developing seed embryos to improve the somatic embryogenesis protocols and to enable full integration of this clonal propagation method into the breeding programs for pines.Ph. D.
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Jetté, Abriana. "Pink houses." Thesis, Boston University, 2012. https://hdl.handle.net/2144/12432.
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Thesis (M.F.A.)--Boston University
PLEASE NOTE: Boston University Libraries did not receive an Authorization To Manage form for this thesis or dissertation. It is therefore not openly accessible, though it may be available by request. If you are the author or principal advisor of this work and would like to request open access for it, please contact us at open-help@bu.edu. Thank you.
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Gross, Donovan. "Mountain Pine Beetle Fecundity and Offspring Size Differ Among Lodgepole Pine and Whitebark Pine Hosts." DigitalCommons@USU, 2008. https://digitalcommons.usu.edu/etd/34.
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Whitebark pine (Pinus albicaulis Engelmann) is a treeline species in the central Rocky Mountains. Its occupation of high elevations previously protected whitebark pine from long-term mountain pine beetle outbreaks. The mountain pine beetle, however, is currently reaching outbreaks of record magnitude in high-elevation whitebark pine. We used a factorial laboratory experiment to compare mountain pine beetle (Dendroctonus ponderosae Hopkins) life history characteristics between a typical host, lodgepole pine (Pinus contorta Engelmann), and whitebark pine. We tested the effects of natal host and brood host on beetle fecundity, offspring size, and brood sex-ratio. We reared mountain pine beetles from whitebark pine and from lodgepole pine, and infested half of them into their natal host and half into the other host. Fecundity was greater overall in lodgepole pine brood hosts. Among lodgepole brood hosts, beetles from whitebark pine had greater fecundity. Fecundity was also significantly related to phloem thickness, which was greater in lodgepole pine. Offspring were larger from whitebark brood hosts than from lodgepole, regardless of their parents’ natal host. Finally, sex-ratio was closer to 1:1 in lodgepole than in whitebark brood hosts. We conclude that host species affects life history of mountain pine beetle with consequences for individual beetle fitness.
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Rozon, Francis Martin. "Pion induced pion production on Oxygen at 280 MeV." Thesis, University of British Columbia, 1988. http://hdl.handle.net/2429/29379.
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A first coincident measurement of the pion induced pion production reaction cross-section on a complex nucleus (A > 2) has been successfully performed. In particular, the reaction ¹⁶O(π⁺,π⁺,π⁻) was measured at 280 MeV incident pion energy. The only previous published measures of this reaction on nuclei consisted of a dated measurement done on emulsion nuclei [BBD*69] and did not provide very stringent limits to the nuclear cross section. Single arm experiments have previously been done elsewhere on the proton [BJK*80] and the deuteron [PGM*84].
The reaction was measured at TRIUMF using the QQD magnetic spectrometer in coincidence with the CARUZ [RGR88], a total absorption scintillator range telescope. The measured four-fold differential cross sections were extrapolated to the unmeasured portions of the phase-space to extract the total reaction cross-section at 280 MeV, which was found to be σtot = 2.250 ± .350m6.
The (π,2π) cross-section is thus observed to provide approximately 40% of the inclusive double charge exchange cross section [Woo84] at this energy.
The model of [OV86] is found to explain many of the features of the data, including σtot. The present data do not preclude effects due to pion condensate precursor phenomena as proposed by [CE83] but they do not support the existence of a strong effect. The data are also compared to kinematical Monte Carlo simulations of some possible reaction mechanisms and it is found that the presence of an intermediate ∆ can aid the explanation of the low energy features of the π⁺ energy spectrum.Science, Faculty of
Physics and Astronomy, Department of
Graduate
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Gadat, Fabrice. "Contribution à l'étude de la préservation des bois de hêtre et de pin : influence des fongicides classiques et nouvellement synthétisés sur les germes lignivores." Nancy 1, 1986. http://www.theses.fr/1986NAN10056.
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Ce travail s'inscrivant dans le cadre de la préservation des bois contre les agents de la pourriture s'articule en 2 grandes parties : études microbiologiques, essais d'imprégnation. (. . . ) vitesse de croissance in vitro de chaetomium globosum, gloeophyllum trabeum, coriolus versicolor. Culture sur bois imprégnés des 3 champignons précédents : variation de masse, essais mécaniques, essais ultraacoustiques. Essais d'imprégnation de solutions de CCA et de CuSO4
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Surini, Thibaud. "Analyse dynamique de la biodégradation du bois et des composites à base de bois et fibres végétales." Thesis, Bordeaux 1, 2009. http://www.theses.fr/2009BOR13848/document.
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La biodégradation du bois est étudiée pour comprendre et quantifier l’endommagement mécanique résultant. Il apparaît que le bois, et notamment le pin maritime, est sensible à une attaque fongique, faisant baisser sa résistance (en compression ou en fissuration) avant même la constatation d’une perte de masse. Cette observation oblige à développer des outils de détection précoce, comme la relaxométrie RMN, pour détecter l’apparition d’un pathogène sur des structures bois de plus en plus encouragées. Par ailleurs, l’emploi de composites à base de bois s’avère justifié pour rendre durable le matériau, et présente un avantage écologique, grâce au recyclage des éléments comme le plastique. Cet argument « vert » est d’une importance grandissante et requiert le développement de nouveaux procédés de préservation du bois. Ainsi, cette thèse étudie aussi le comportement à plus ou moins long terme des bois imprégnés d’anhydrides et d’huile d’origine végétale, ou encore du bois traité thermiquement. Des domaines autres que la mécanique sont abordés, afin d’expliquer l’ensemble des phénomènes intervenant durant une dégradation et comprendre les axes d’amélioration dans cette discipline « vivante »Wood biodegradation is studied in order to understand and quantify the mechanical damage. Wood, and especially maritime pine, is sensitive to a fungal attack that causes a decrease of its strength (compression or fracture resistance), before a weight loss occurs. This requires developing or ameliorating the tools of early detection, such as NMR relaxometry, in order to detect the appearance of a pathogen in wooden structures that are more and more appreciated. Besides, wooden composites are a good alternative to make the material more durable, and are ecologically interesting, as they permit to recycle some element, like plastics. This “green” effect is of main importance, which implies a development of new ways in wood preservation. This thesis, led in a short as well as in a long term scale, also studies the behaviour of wood, impregnated with anhydrides or oils from a vegetal origin, or even heat-treated wood. Not only mechanics is described, so that many phenomena are explained and perspectives are clarified
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Aouissat, Zoheir. "Corrélations pion-pion dans le milieu nucléaire chaud et dense." Grenoble 1, 1993. http://www.theses.fr/1993GRE10074.
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Un potentiel separable est construit pour traiter l'interaction - dans le vide. Il reproduit les dephasages dans le canal scalaire-isoscalaire et vecteur-isovecteur. Le modele est ensuite deploye dans la matiere nucleaire avec une prescription consistante pour la propagation des pions. Un schema a deux niveaux est etabli en couplant le pion aux excitations delta-trou. Le mixage et le repoussement des niveaux, a mesure que leur couplage se renforce, rend l'equation de dispersion du pion molle. Ceci provoque la formation d'une structure rehaussee pres du seuil 2 m# dans la fonction spectrale de 2 pions. La contrainte d'invariance de jauge detruit ce resultat dans le canal du meson rho, mais preserve le deplacement de la masse de ce dernier vers les hautes energies. Dans le canal du meson fictif sigma, la forte attraction entre pion a basse energie entraine la production d'etats lies a 2 pions a densite 0. Les excitations particules-trous poussent le champ fort a la condensation. Cette instabilite precede la condensation du pion simple. Deux objections a ceci sont a soulever. La premiere, qui n'est pas etudiee dans cette these, concerne la sensibilite de ce resultat aux effets hors couche de l'interaction. La seconde, detaillee dans la troisieme partie de ce travail, concerne l'effet des boucles fermioniques sur la propagation des 2 pions. La derniere partie de cette these a ete consacree a l'etude de la diffusion en presence d'un gaz chaud de pions susceptible de se former dans la region centrale dans les experiences urhic. Il en decoule que la section efficace de diffusion est considerablement diminuee dans les deux canaux de spin-isospin par rapport a celle dans le vide. Ceci suggere un temps de hadronisation tres court, pour rendre compte de l'exces des # mous de la collaboration na35
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Wallertz, Kristina. "Pine weevil feeding in Scots pine and Norway spruce regenerations /." Alnarp : Southern Swedish Forest Research Centre, Swedish University of Agricultural Sciences, 2009. http://epsilon.slu.se/200960.pdf.
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Hébert, François. "Croissance et fonctions hydriques de plants d'épinette noire (Picea mariana (Mill.) B.S.P.) et de pin gris (Pinus banksiana Lamb.) trois ans après plantation dans des pessières noires à lichens de la forêt boréale commerciale /." Thèse, Chicoutimi : Université du Québec à Chicoutimi, 2004. http://theses.uqac.ca.
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Towfik, Louie, and Samuel Häggmyr. "Mätverktyget Ping-Win." Thesis, Karlstads universitet, Institutionen för matematik och datavetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-65745.
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För en webbtjänst så är det viktigt med tillgänglighet. Detta innebär att det är värdefullt att veta när störningar förekommer. Med hjälp av övervakning utav webbtjänster så kan man få just detta, ökad tillgänglighet.Ping-Win är en övervakningstjänst utvecklad åt konsultbolaget Knowit. Arbetet som Knowit gör är fokuserat på att leverera webbtjänster åt sina kunder.Ping-Win utvecklades i åndamålen att användas för att övervaka de tjänster de tillhandahåller.Vi arbetade agilt, med totalt fem sprintar, för att kunna justera projektets riktning och på så vis möta Knowits förväntningar på Ping-Win.Resultatet blev en webbtjänst som kompletteras av en bakgrundstjänst för kontinuerlig övervakning samt en databas för sparande av statusmeddelanden.Ping-Win utvärderades med ett test där vi övervakade fyra hemsidor under mellandagarna 2017.Availability is important for a web service. It is therefore valuable to know when interferences occurs. With the help of monitoring of web services, one can acheive increased availability.Ping-Win is a monitoring service developed for the consultancy Knowit. Knowit is focusing on delivering web services for their clients. Ping-Win was developed with the purpose to monitor the services that Knowit are providing.The work was practised with an agile method, with five sprints in total, to be able to adjust the direction of the project to fit the expectations that Knowit had on Ping-Win.The result was a web service with a complementing background service for continuous monitoring and also a database which was used to store the status messages.Ping-Win was evaluated with a test were we let it monitor four websites during the Christmas holidays of 2017.
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Parker, Samuel Tovarisch. "The Pink Passenger." Digital Archive @ GSU, 2010. http://digitalarchive.gsu.edu/art_design_theses/59.
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The work I have created during my time as a graduate student is a reflection of the dialogues I have engaged in with other artists and acquaintances both in and outside of the academic arena. Stylistically this work is derivative of my involvement with graffiti, Tattooing, and underground comics. I have developed the icon of the rider to represent the agency and responsibility of myself as an artist in reflecting these various contexts.
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Haggärde, Louise, and Malin Ogard. "EN JÄMN PINA!" Thesis, Malmö högskola, Fakulteten för hälsa och samhälle (HS), 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-26926.
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Artros är en vanlig folksjukdom där 3-5 procent av Sveriges befolkning är drabbad. Oftast drabbas höft- och knälederna vilka är de viktbärande lederna men även andra leder kan drabbas. Syftet med denna systematiska litteraturstudie är att belysa vuxna patienters upplevelser av artros i det dagliga livet. Studien är baserad på 11 kvalitativa och kvantitativa artiklar där Goodmans sju steg används som metod. Resultatet presenteras under temat smärta och de tre kategorierna: fysisk funktionsnedsättning, psykisk påverkan och sociala begränsningar. Smärta är ett vanligt förekommande problem för patienter med artros och många upplever smärta dagligen. Vardagliga aktiviteter såsom hushållsarbete, promenader och begränsningar i utövandet av fritidsaktiviteter skapar problem i dessa patienters liv. Smärta och fysiska begränsningar är även bundet till sjukdomens svårighetsgrad. Socialt stöd är viktigt för artrospatienter och kan minska känslan av depression och isolering. Artrossjukdomen drabbar således patienterna både fysiskt, psykiskt och socialt och ger begränsningar i det vardagliga livet.Osteoarthritis is a common disease which affects 3-5 percent of the Swedish population. Most often the hip and knee joints are affected which are the weight-bearing joints, but other joints can also be affected. The aim of this systematic literature review is to illuminate adult patient’s experiences of osteoarthritis in daily life. The study is based on 11 qualitative and quantitative articles guided by Goodman's seven-step model as a method. The results are presentered by the theme pain and the three categories: physical disability, psychological impact and social restrictions. Pain is a common problem for patients with osteoarthritis and many patients feel pain daily. Activities of daily living such as housework, walking and limitations in leisure activities create problems in these patient’s lives. Pain and physical limitations are associated with severity of the disease. Social support is important for patient's with osteoarthritis and can reduce feelings of depression and isolation. Thus, osteoarthritis affects patients physically, mentally, socially and creates limitations in activities of daily living.
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McCormick, John T. II. "Jack Pine Scraggly." Miami University / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=miami1091500019.
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Blagg, Caroline. "The Pink Papers." Thesis, University of North Texas, 2003. https://digital.library.unt.edu/ark:/67531/metadc4270/.
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The Pink Papers is a collection of three short stories and a novel in progress consisting of four chapters. Each piece is a work of original fiction. The preface addresses the female writer and the female voice in fiction. "Broken Clock" and "Pink Paper" are the stories of two girls coping with endometriosis. "Normal Capacity" looks at the loss of a dream through the eyes of a first-year law student. The novel in progress, titled Blanchard, OK, is set in a rural farming town in Oklahoma. The novel tells the stories of 24-year-old Robin, her Aunt Paula, and Paula's boyfriend, Sam.
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DeGomez, Tom, and Deborah Young. "Pine Bark Beetles." College of Agriculture, University of Arizona (Tucson, AZ), 2015. http://hdl.handle.net/10150/550373.
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Revised; Originally Published 20024 pp.
Pine bark beetles in Arizona are generally of the genus Ips or Dendroctonus. Fading foliage in the tree is often the first sign of a beetle attack. Prevention is best practiced since control is not possible once the beetles have successfully colonized the tree. Colonization is dependent upon trees being in a vulnerable condition caused by stress from various agents and site conditions.
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DeGomez, Tom, and Deborah Young. "Pine Bark Beetles." College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2009. http://hdl.handle.net/10150/146729.
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Cross, Alison Danielle. "Early marine growth and consumption demand of juvenile pink salmon in Prince William Sound and the northern coastal Gulf of Alaska /." Thesis, Connect to this title online; UW restricted, 2006. http://hdl.handle.net/1773/5314.
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Quencez, Christine. "Recherche de marqueurs phénoliques du pin sylvestre associés à la résistance à un insecte défoliateur (Diprion Pini L. )et à un champignon pathogène." Nancy 1, 1996. http://www.theses.fr/1996NAN10269.
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Silveira, Juliana Carvalho Franco da. "Dramaturgia na dança-teatro de Pina Bausch: Teatro de Pina Bausch." Universidade Federal de Minas Gerais, 2009. http://hdl.handle.net/1843/JSSS-7Z6FFE.
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This dissertation attempts to find the strategies of composition used by Pina Bausch for the dramaturgical construction of the pieces of the Tanztheater Wuppertal, from 1973 to 2009. In the present research, to reflect about dramaturgy meant to observe the creation of the pieces in all its production context, which includes its aesthetic and thematicchoices, and the proceedings utilized for the creation process and for the training of the dancers. For that, a bibliographic revision was done about the historical and the artistic context of the dance theater and the trajectory of Pina Bausch, about the concept of dramaturgy in theater and in dance, as well as the analysis of interviews, videos, statements, critics and reports about the work of the German director and choreographer. It was also realized a field research in the Tanztheater Wuppertal in February of 2008 and in April and May of 2009. Finally, this work searched out to establish parameters for the understanding of the dramaturgical composition of the work of Pina Bausch. Two different phases wereidentified in the creation process of the pieces: before and after the questions method. Centering in the second phase that is the longest and goes from 1978 to 2009 among the composition strategies found, it was detached the question method, the collage structure, theuse of costumes that explicit social functions and of stage settings with organic material and quotidian objects, the dramaturgy that develops itself during the process of creation and has as its base the directors look. The work of the German director developed in what NorbertServos calls theater of experience, because its point of departure for the creation of the pieces is the subjective experience of the dancers. Observing the composition strategies, it is possible to say that Pina Bauschs dance theater is a form of art that has the capacity to absorband reflect contemporary life, expanding the expressive possibilities of dance and theater and feeding the search for new forms of expression for both genres.Esta dissertação busca evidenciar as estratégias de composição utilizadas por Pina Bausch na construção dramatúrgica das peças do Tanztheater Wuppertal, de 1973 a 2009. No presente estudo, refletir sobre dramaturgia significou observar a criação das peças em todo oseu contexto de produção: sua composição, estruturação, escolhas temáticas, estéticas, procedimentos do processo de criação e do treinamento dos bailarinos. Para tanto, foi realizada uma revisão bibliográfica sobre o contexto histórico e artístico da dança-teatro e atrajetória de Pina Bausch, sobre o conceito de dramaturgia no teatro e na dança, bem como a análise de entrevistas, vídeos, depoimentos, críticas e reportagens sobre o trabalho da diretora alemã. Também foi realizado um estudo de campo junto ao Tanztheater Wuppertal em fevereiro de 2008 e em abril e maio de 2009. Na intenção de estabelecer parâmetros para o entendimento da composição dramatúrgica da obra de Pina Bausch, foram identificadas duas fases que se diferenciam em relação ao processo de criação das peças: antes e depois do método das perguntas. Centrando nessa segunda fase - que é a mais extensa e vai de 1978 a 2009 - dentre as estratégias de composição encontradas, pode-se destacar o método das perguntas, a estrutura da colagem, o uso de figurinos que explicitam papéis sociais e o uso de cenários com materiais orgânicos e objetos do dia a dia, em uma dramaturgia que se constrói durante o processo de criação e tem como base o olhar da diretora sobre as experiências de seus bailarinos. O trabalho da diretora alemã desenvolveu-se no que Servos (1984) chama de teatro da experiência. Observando essas estratégias de composição, percebe-se que a dramaturgia na dança-teatro de Pina Bausch busca absorver e refletir a vida contemporânea a partir da experiência, expandindo as possibilidades expressivas tanto da dança como do teatro e alimentando a busca por novas formas de expressão para ambos os gêneros.
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Oneil, Elaine E. "Developing stand density thresholds to address mountain pine beetle susceptibility in eastern Washington forests /." Thesis, Connect to this title online; UW restricted, 2006. http://hdl.handle.net/1773/5536.
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Mehats, Jérémy. "Différence de couleur entre duramen et aubier du bois de Pin maritime : identification moléculaire, homogénéisation et évolution." Thesis, Bordeaux, 2020. http://www.theses.fr/2020BORD0154.
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Le pin maritime est l’une des espèces de conifères les plus communes retrouvées dans le Sud-Ouest de la France, couvrant plus de 10% de la surface forestière totale du territoire. A ce jour, il est surtout utilisé pour son bois, qui est transformé par les industriels en produits finis de différentes qualités, allant de l’emballage (palettes) à du matériel plus technique, pour la construction par exemple. Cependant, le retour des consommateurs ainsi que les cahiers des charges des opérateurs ont permis d’identifier une problématique majeure : la différence de couleur entre le duramen et l’aubier.Cette essence possède un duramen de couleur caractéristique allant du rosé au rouge sang et un aubier ayant une teinte plus claire, jaune-beige. Cette différence est à l’origine d’inhomogénéités esthétiques qui vont dévaloriser la valeur commerciale du bois, notamment celle des produits finis techniques. Afin de palier à cette problématique, les industriels s’intéressent aux différentes méthodes existantes pour réduire cet écart de coloration.L'objectif de cette thèse est, après avoir identifié les différences de composition chimique entre duramen et aubier, de pouvoir diminuer cette différence de couleur par l'utilisation de traitements issus des procédés papetiers, en particulier ceux basés sur la chimie du peroxyde d'hydrogèneMaritime pine is one of the most common softwood found in South West of France, covering more than 10% of the total forestry area of the country. With the development of the petroleum-based chemistry, maritime pine has been mostly used for its wood that possesses some good mechanical properties, for the elaboration of materials for packaging purposes (ex: wood pallet) or engineered wood products for structural applications. Nevertheless, due to consumers’ feedbacks and to requirements specifications, the industries identified a major issue: the color difference between heartwood and sapwood.Heartwood is known to have a brown reddish color contrary to sapwood, which have a pale yellow tint. This coloration difference results in a depreciation of the commercial value of the finished material. Thus, industrials are looking for treatments to homogenize the color and to valorize all their productsThe purpose of this PhD is firstly to identify the chromophores that are responsible of this color differences between the two wood structures and then to develop an homogenisation treatment based on the paper industry processes, particularly using alkaline hydrogen peroxide chemistry
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Acharya, Tanka Prasad Somers Greg Lynn. "Prediction of distribution for total height and crown ratio using normal versus other distributions." Auburn, Ala., 2006. http://repo.lib.auburn.edu/2006%20Fall/Theses/ACHARYA_TANKA_3.pdf.
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Dickerson, Bobette Ray. "Reproductive success in wild pink salmon, Oncorhynchus gorbuscha /." Thesis, Connect to this title online; UW restricted, 2003. http://hdl.handle.net/1773/5337.
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Powell, David B. "A post-harvest evaluation of mechanized thinning in natural loblolly pine in the coastal plain of Arkansas." Thesis, This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-09192009-040300/.
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Bockino, Nancy Karin. "Interactions of white pine blister rust, host species, and mountain pine beetle in whitebark pine ecosystems in the Greater Yellowstone." Laramie, Wyo. : University of Wyoming, 2008. http://proquest.umi.com/pqdweb?did=1594498141&sid=3&Fmt=2&clientId=18949&RQT=309&VName=PQD.
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Yang, Hao. "Diffractive production of pion-f1 in pion-proton interactions at COMPASS (CERN)." Diss., lmu, 2012. http://nbn-resolving.de/urn:nbn:de:bvb:19-150065.
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Kermani, Mohammad Arjomand. "Exclusive measurements of piN-->pi piN." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq25077.pdf.
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Baissalov, Roustem. "Pion deuteron breakup reaction." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ30441.pdf.
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Adams, Thomas P. "Reconstructing Scotland's pine forests." Thesis, University of Edinburgh, 2010. http://hdl.handle.net/1842/4730.
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The Caledonian pinewoods are a habitat of crucial environmental and cultural importance, and the sole home of many rare species. However, they have seen steady decline in recent centuries, through the establishment of hunting estates and forestry plantations. A recent trend in management is the attempted transformation of existing plantations (dense communities with a regular spatial structure and low variance in size and age) towards a state mimicking the perceived natural condition, which has a lower density, irregular spatial pattern, high variance in size and age. This presents a problem for traditional forestry practices, which were conceived primarily with “even-aged” plantation populations in mind. The shift towards management of an uneven-aged structure requires a more in-depth consideration of individual trees’ lifecycles and their effect upon long-term population dynamics. In recent years, great advances in computational and mathematical models for spatially interacting populations have been made. However, certain complications have prevented them from being utilised to their full potential for the purposes of forest management. Forest communities are not only spatially structured; the size of each tree plays a role in its ability to acquire resources for growth and survival. Existing models of population dynamics are discussed, and their extension to incorporate both size- and spatially- structured interactions is presented. The key aspects of populations’ structural development are studied. Data from both plantation and semi-natural Scots Pine stands in Scotland allow parameterisation of a stochastic individual-based model, which in turn provides insights into the behaviour of real populations, and the importance of spatial effects and heterogeneity in individuals. A partial differential equation (moment) approximation to the stochastic model is presented. While this is analytically intractable, numerical integration and heuristic analysis of the equations enable clearer identification of the drivers of population structure. Many results are concordant with existing models of both qualitative forest stand development and theoretical dynamics of spatially-structured populations, while others are specific to joint size-space structure. This deeper understanding of the population dynamics allows robust recommendations for diverse uneven-aged stand management objectives to be made. Approaches to accelerating the transformation of plantation stands towards a “natural” state (using two key operations: thinning – removal of trees, and planting) are investigated. Finally, approaches to so-called “continuous cover forestry” – the practice of maintaining a quasi-natural state while also obtaining economic value from a forest – are also considered. In both cases, the model’s simplicity enables clearer conclusions than would be possible using other approaches.
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Howe, Ethan (Ethan Gabriel Grief). "Simulated pion photoproduction experiments." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/32903.
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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Physics, 2005.Includes bibliographical references (leaf 18).
Introduction: In this paper, I will be assessing the capabilities of the Neutral Meson Spectrometer (NMS) detector in a planned experiment at the High Intensity Gamma Source at Duke University. I will review the relevant theory and set out the importance of this experiment. I will describe the proposed apparatus and how I have modeled it in my simulation. I will explain the data we wish to draw from the experiment and present results as to how well I believe this setup will perform.
by Ethan Howe.
S.B.