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Tesis sobre el tema "Head evolution"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 25 de mayo de 2024

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1

Allison, H. M. "The Holocene evolution of Scolt Head Island, Norfolk." Thesis, University of Cambridge, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.372641.

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2

Eriksson, Joakim. "Evolution and Development of the Onychophoran Head and Nervous System." Doctoral thesis, Uppsala universitet, Institutionen för geovetenskaper, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-3387.

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Onychophorans are closely allied to the arthropods and possess a body organisation more similar to Middle Cambrian fossils than to recent arthropods. This means that onychophorans in some respects can be regarded as a model for the last common ancestor to both the Arthropoda and the Onychophora. This thesis mainly deals with the morphology of the head region of the Onychophora, but developmental investigations of the expression of a key regulatory gene, engrailed, are also carried out. The innervation of the head was found to differ from that reported in earlier investigations. The nerves that

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3

Aldea, Daniel. "Amphioxus illuminates the origin of the vertebrates' head." Thesis, Paris 6, 2016. http://www.theses.fr/2016PA066704/document.

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L'apparition de nouvelles structures telles que la crête neurale, les placodes et le mésoderme crânien a été essentielle pour l'émergence de la tête des vertébrées. Fait intéressant, le mésoderme de la tête des vertébrés n'est pas segmenté alors qu'il est supposé que le mésoderme de l'ancêtre de tous les chordés était totalement segmenté. De même le corps du le céphalochordé amphioxus est entièrement segmenté. Des travaux menés par l'équipe ont montré le rôle central du signal FGF dans la formation des somites les plus antérieures chez l'amphioxus. Afin de mieux comprendre le rôle de ce signal

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4

Bhullar, Bhart-Anjan Singh. "The evolution and development of the archosaurian head and the origin of the bird skull." Thesis, Harvard University, 2014. http://dissertations.umi.com/gsas.harvard:11667.

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Abstract: Archosauria, the "ruling reptiles," characterized along their stem by relatively large, macrocarnivorous animals, are today represented by two enormously successful but divergent extant clades: Aves, the birds, and Crocodylia, the crocodiles and alligators. This thesis seeks to characterize major transformations in the cranial region of archosaurs, a prominent theme in their evolution.

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5

Aldea, Daniel. "Amphioxus illuminates the origin of the vertebrates' head." Electronic Thesis or Diss., Paris 6, 2016. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2016PA066704.pdf.

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L'apparition de nouvelles structures telles que la crête neurale, les placodes et le mésoderme crânien a été essentielle pour l'émergence de la tête des vertébrées. Fait intéressant, le mésoderme de la tête des vertébrés n'est pas segmenté alors qu'il est supposé que le mésoderme de l'ancêtre de tous les chordés était totalement segmenté. De même le corps du le céphalochordé amphioxus est entièrement segmenté. Des travaux menés par l'équipe ont montré le rôle central du signal FGF dans la formation des somites les plus antérieures chez l'amphioxus. Afin de mieux comprendre le rôle de ce signal

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6

Kubiak, Martin [Verfasser], and Susanne [Akademischer Betreuer] Dobler. "The morphology and evolution of adult head structures in Trichoptera (Insecta) / Martin Kubiak ; Betreuer: Susanne Dobler." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2016. http://d-nb.info/1120623472/34.

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7

Kubiak, Martin Verfasser], and Susanne [Akademischer Betreuer] [Dobler. "The morphology and evolution of adult head structures in Trichoptera (Insecta) / Martin Kubiak ; Betreuer: Susanne Dobler." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2016. http://nbn-resolving.de/urn:nbn:de:gbv:18-82210.

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8

Naumann, Benjamin [Verfasser], Lennart [Gutachter] Olsson, Martin S. [Gutachter] Fischer, and Shigeru [Gutachter] Kuratani. "Head, trunk and in between : the evolution and development of muscles in the head/trunk interface of vertebrates / Benjamin Naumann ; Gutachter: Lennart Olsson, Martin S. Fischer, Shigeru Kuratani." Jena : Friedrich-Schiller-Universität Jena, 2019. http://d-nb.info/1177386291/34.

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9

Spangenberg, Rico [Verfasser], Rolf G. [Akademischer Betreuer] Beutel, Gerald [Akademischer Betreuer] Moritz, and Thomas [Akademischer Betreuer] Hörnschemeyer. "The evolution of head structures in acercaria (insecta) / Rico Spangenberg. Gutachter: Rolf Georg Beutel ; Gerald Moritz ; Thomas Hörnschemeyer." Jena : Thüringer Universitäts- und Landesbibliothek Jena, 2015. http://d-nb.info/1072072718/34.

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10

Sefton, Elizabeth Marie. "Evolution of the Amphibian Head and Neck: Fate and Patterning of Cranial Mesoderm in the Axolotl (Ambystoma Mexicanum)." Thesis, Harvard University, 2016. http://nrs.harvard.edu/urn-3:HUL.InstRepos:26718769.

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The vertebrate head is a complex structure derived from all three embryonic germ layers. Cranial mesoderm forms most of the neurocranium, cardiovascular tissues and voluntary muscles required for intake of food and oxygenated fluid. Despite its essential role in shaping cranial and neck anatomy, long-term fate maps of cranial mesoderm are known only from the mouse and chicken, as effective labeling techniques for use in other species have been developed only recently. Data from additional species are needed to determine the embryonic origin of features absent in amniotes but present in other v

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11

Spangenberg, Rico Verfasser], Rolf G. [Akademischer Betreuer] [Beutel, Gerald [Akademischer Betreuer] Moritz, and Thomas [Akademischer Betreuer] Hörnschemeyer. "The evolution of head structures in acercaria (insecta) / Rico Spangenberg. Gutachter: Rolf Georg Beutel ; Gerald Moritz ; Thomas Hörnschemeyer." Jena : Thüringer Universitäts- und Landesbibliothek Jena, 2015. http://d-nb.info/1072072718/34.

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12

Wigley, Rochelle Anne. "Sedimentary facies from the Head of the Cape Canyon : insights into the Cenozoic evolution of the western margin of South Africa." Doctoral thesis, University of Cape Town, 2004. http://hdl.handle.net/11427/4232.

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Includes bibliographical references.<br>Cenozoic sedimentary successions have a restricted distribution and are largely incomplete due to erosion and non-deposition on the western margin of southern Africa. For this reason, much controversy and uncertainty remains on the geological evolution of the western margin. The wide western margin is largely devoid of bathymetric features, except for the deeply incised Cape Canyon that crosscuts the continental slope and shelf ~150 km to the northwest of Cape Town. The Head of the Cape Canyon forms a well-developeed trough landwards of the Western Ridge

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13

Schneeberg, Katharina [Verfasser], Rolf G. [Akademischer Betreuer] Beutel, and Steffen [Akademischer Betreuer] Harzsch. "The evolution of head structures in diptera and the phylogeny of the order / Katharina Schneeberg. Gutachter: Rolf Georg Beutel ; Steffen Harzsch." Jena : Thüringer Universitäts- und Landesbibliothek Jena, 2014. http://d-nb.info/1058404830/34.

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14

Yavorskaya, Margarita [Verfasser], Rolf G. [Gutachter] Beutel, Alexey Gutachter] Polilov, and Oliver [Gutachter] [Betz. "Evolution of head structures in Coleoptera with special emphasis on the feeding apparatus and miniaturized forms / Margarita Yavorskaya ; Gutachter: Rolf G. Beutel, Alexey Polilov, Oliver Betz." Jena : Friedrich-Schiller-Universität Jena, 2018. http://d-nb.info/1170395473/34.

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15

Corno, Stefano. "Autour de la relation tête-dépendant dans les langues indo-européennes anciennes : typologie et reconstruction." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSE2011/document.

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L’objet de ce travail est d’étudier les mécanismes de co-variation entre la tête d’un constituant nominal et son/ses dépendant(s) dans les langues indo-européennes anciennes : indo-iranien, grec, italique et anatolien. Une analyse détaillée de la morphologie nominale et pronominale au sein de chacun de ces groupes permet de dégager les classes d’accord possibles et impossibles pour chacune de ces langues et de déterminer le rôle joué par les morphèmes désinentiels dans la co-variation. Dans les langues à trois genres, les classes flexionnelles sont plus nombreuses avec une information sur le g

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16

Over, Derya. "Early Heat Evolution In Natural Pozzolan-incorporated Cement Hydration." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614533/index.pdf.

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Portland cement hydration is an exothermic process. The heat evolved during the hydration process is especially important in mass concrete, and hot and cold weather concreting. Heat of hydration is affected by several factors like chemical composition of cement, fineness of cement and ambient temperature. The major aim of this thesis is to investigate the effect of cement composition and fineness, amount and composition of the fine portion (&lt<br>45 &micro<br>m) of natural pozzolan-incorporated cement on hydration heat. For this purpose, a portland cement and pozzolan-incorporated blended ce

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17

PASSINI, Valerio. "ADAPTATIVE EVOLUTION OF THE HEAT SHOCK RESPONSE IN ANTARCTIC CILIATES." Doctoral thesis, Università degli Studi di Camerino, 2007. http://hdl.handle.net/11581/401896.

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During my PhD, the general objective of my work was to contribute to a better knowledge of the molecular basis of Heat Shock Response in eukaryotic microorganisms. In particular, I was interested in analyzing the plasticity of hsp70 gene expression in marine species of ciliates inhabiting the cold and thermally stable coastal sea water of Antarctica. Useful organism models for analysis of adaptation of gene expression were represented by two Antarctic species of Euplotes, E. focardii andE. nobilii, which showed up marked differences in their capacity to activate hsp70 gene expression in respon

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18

Starr, Matthew J. "Tests for Positive Selection on Genes Encoding Heat Shock Proteins in the Marine Slipper Snail, Crepidula fornicata." Thesis, University of Louisiana at Lafayette, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=1592454.

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<p> Sedentary organisms that inhabit the marine intertidal zone must be adapted to withstand forms of environmental stress that are uncommon in other marine environments. Adaptations to these stressors are apparent in the morphologies, behaviors, life histories, and regulation and products of genes of sedentary intertidal organisms (Lent 1969; Garrity 1984; Schmidt et al 2008). However, for those species that have a planktonic larval stage, evolutionary specialization at the molecular level could be constrained by opposing requirements for larvae and adults that are adapted to very differ

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19

Krenek, Sascha, Martin Schlegel, and Thomas U. Berendonk. "Convergent evolution of heat-inducibility during subfunctionalization of the Hsp70 gene family." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-126934.

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Background: Heat-shock proteins of the 70 kDa family (Hsp70s) are essential chaperones required for key cellular functions. In eukaryotes, four subfamilies can be distinguished according to their function and localisation in different cellular compartments: cytosol, endoplasmic reticulum, mitochondria and chloroplasts. Generally, multiple cytosol-type Hsp70s can be found in metazoans that show either constitutive expression and/or stress-inducibility, arguing for the evolution of different tasks and functions. Information about the hsp70 copy number and diversity in microbial eukaryotes is, ho

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20

Soutsos, Marios Nicou. "Mix design, workability heat evolution and strength development of high strength concrete." Thesis, University College London (University of London), 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.308062.

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A literature survey of the properties and uses of high strength concrete, defined for this study as having a strength in excess of 60 N/tnm2, has shown that of prime need is a systematic, reproducible procedure for attaining high strength concrete. The "Maximum Density Theory", i.e. the requirement that the aggregate occupies as large a relative volume as possible, has been adopted as an approach to optimisation of the mix proportions. However, this does not consider the effect that the aggregate suIface area has on the requirement of excess paste for lubrication. To investigate the combined e

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21

Waterton, Michael. "Characterisation and evolution of the grain boundary network in BCC metals." Thesis, Swansea University, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.678443.

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22

Thanaboonsombut, Buncha. "Microstructural evolution and recrystallization modeling in AA6013 and compositional variants of 6013." Diss., Georgia Institute of Technology, 1993. http://hdl.handle.net/1853/20020.

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23

Guo, Guannan. "Aluminum microstructure evolution and effects on mechanical properties in quenching and aging process." Digital WPI, 2017. https://digitalcommons.wpi.edu/etd-dissertations/334.

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"High strength aluminum alloys are recently widely used in aircraft, automobile and construction industry fields. Typical T6 heat treatment process can be applied to improve the heat treatable aluminum alloy in order to facilitate the formation of prime strengthening precipitate phases. Critical steps in T6 heat treatment process include solution treatment, quenching and aging. Due to high thermal gradients in quenching process and aging process, large thermal stress will remain in the matrix and may bring unexpected deformation or distortion in further machining. Therefore, in order to predic

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24

Prandi, Dario. "Geometry and analysis of control-affine systems: motion planning, heat and Schrödinger evolution." Palaiseau, Ecole polytechnique, 2013. http://pastel.archives-ouvertes.fr/docs/00/87/85/67/PDF/main.pdf.

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Cette thèse traite de deux problèmes qui ont leur origine dans la théorie du contrôle géométrique, et qui concernent les systèmes de contrôle avec dérive, c'est-à-dire de la forme \dot q= f_0(q)+\sum_{j=1}^m u_j f_j(q). Dans la première partie de la thèse, on généralise le concept de complexité de courbes non-admissibles, déjà bien compris pour les systèmes sous-riemanniens, au cas des systèmes de contrôle avec dérive, et on donne des estimations asymptotiques de ces quantités. Ensuite, dans la deuxième partie, on considère une famille de systèmes de contrôle sans dérive en dimension 2 et on s

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25

Hou, Kuang-Hua. "Microstructure evolution in the fusion welding of heat-treatable Al-Cu-Li alloys /." The Ohio State University, 1994. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487850665560274.

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26

Prandi, Dario. "Geometry and analysis of control-affine systems: motion planning, heat and Schrödinger evolution." Doctoral thesis, SISSA, 2014. http://hdl.handle.net/20.500.11767/3913.

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This thesis is dedicated to two problems arising from geometric control theory, regarding control-affine systems $\dot q= f_0(q)+\sum_{j=1}^m u_j f_j(q)$, where $f_0$ is called the drift. In the first part we extend the concept of complexity of non-admissible trajectories, well understood for sub-Riemannian systems, to this more general case, and find asymptotic estimates. In order to do this, we also prove a result in the same spirit as the Ball-Box theorem for sub-Riemannian systems, in the context of control-affine systems equipped with the L1 cost. Then, in the second part of the thesis, w

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27

Yang, Bo. "Spatio-temporal Analysis of Urban Heat Island and Heat Wave Evolution using Time-series Remote Sensing Images: Method and Applications." University of Cincinnati / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1552398782461458.

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28

Harper, Megan Lynn. "A study of the microstructural and phase evolutions in TIMETAL 555." Connect to resource, 2004. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1132165471.

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Thesis (M.S.)--Ohio State University, 2004.<br>Advisor: Hamish L. Fraser, Dept. of Materials Science and Engineering. Includes bibliographical references (leaves 78-79). Available online via OhioLINK's ETD Center

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29

Smith, Hilary April. "Evolution of Reproduction and Stress Tolerance in Brachionid Rotifers." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/52145.

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Stress can be a driving force for new evolutionary changes leading to local adaptation, or may be responded to with pre-existing, ancestral tolerance mechanisms. Using brachionid rotifers (microzooplankton) as a study system, I demonstrate roles of both conserved physiological mechanisms (heat shock protein induction) and rapid evolution of traits in response to ecologically relevant stressors such as temperature and hydroperiod. Rapid evolution of higher levels of sex and dormancy in cultures mimicking temporary waters represents an eco-evolutionary dynamic, with trait evolution feeding back

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30

Siegel, Coralie. "Heat-producing element enrichment in granitic rocks, the role of crustal composition and evolution." Thesis, Queensland University of Technology, 2015. https://eprints.qut.edu.au/85344/1/Coralie_Siegel_Thesis.pdf.

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This study greatly enhanced our knowledge of the potential for geothermal energy development in Queensland as a viable clean energy source in the coming decades. Key outcomes of the project were understanding the first-order controls on the concentration of the heat-producing elements: uranium, thorium and potassium in granitic rocks, and constraining where rocks with the greatest heat-producing potential lie at depth in Queensland. Importantly, new temperature and heat flow maps for southwest Queensland were developed that will greatly assist future exploration efforts.

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31

Russnak, Roland Hans. "Structure, expression and evolution of the 16 kilodalton heat shock protein gene family of C. elegans." Thesis, University of British Columbia, 1986. http://hdl.handle.net/2429/27521.

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Sequences coding for three related 16 kd heat shock proteins (hsps) of the nematode Caenorhabditis elegans were isolated and characterized. The extensive accumulation of hsp16 mRNA during heat stress facilitated the identification of two cDNAs, CEHS48 and CEHS41, which encoded hsp16 variants. These plasmids were selected by their ability to hybridize to mRNA which directed the synthesis of hspl6 in vitro, and were further characterized by sequence analysis. Two-dimensional gel electrophoresis of hspl6 synthesized in vitro from mRNA selected by hybridization to either of the cDNAs under conditi

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32

Li, Letian. "Microstructural evolution in 9 wt.% Cr power plant steels." Thesis, Loughborough University, 2013. https://dspace.lboro.ac.uk/2134/11980.

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High chromium ferritic steels such as Grade 91 and Grade 92 are extensively used in the power plant industry. Components made from these types of steels, including headers, steam pipes and tubes, are required to provide reliable service at high pressures (20-30 MPa) and temperatures (550-610°C) for several decades. However, in order to further improve the thermal efficiency of the power plant, the future operation temperature for the ferritic steels needs to be elevated to 650°C. Therefore, the current research project focuses on the examination of recently developed MarBN type steels (Martens

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33

Branding, Volker. "The evolution equations for Dirac-harmonic Maps." Phd thesis, Universität Potsdam, 2012. http://opus.kobv.de/ubp/volltexte/2013/6420/.

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This thesis investigates the gradient flow of Dirac-harmonic maps. Dirac-harmonic maps are critical points of an energy functional that is motivated from supersymmetric field theories. The critical points of this energy functional couple the equation for harmonic maps with spinor fields. At present, many analytical properties of Dirac-harmonic maps are known, but a general existence result is still missing. In this thesis the existence question is studied using the evolution equations for a regularized version of Dirac-harmonic maps. Since the energy functional for Dirac-harmonic maps is unb

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34

Wammack, James Edward. "Evolution of Turbine Blade Deposits in an Accelerated Deposition Facility: Roughness and Thermal Analysis." Diss., CLICK HERE for online access, 2005. http://contentdm.lib.byu.edu/ETD/image/etd1067.pdf.

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35

Sikkink, Kristin. "Experimental Evolution of Phenotypic Plasticity for Stress Resistance in the Nematode Caenorhabditis remanei." Thesis, University of Oregon, 2014. http://hdl.handle.net/1794/18425.

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Many organisms can acclimate to new environments through phenotypic plasticity, a complex trait that can be heritable, be subject to selection, and evolve. However, the rate and genetic basis of plasticity evolution remain largely unknown. Experimentally evolved populations of the nematode Caenorhabditis remanei were created by selecting for stress resistance under different environmental conditions. This resource was used to address key questions about how phenotypic plasticity evolves and what the genetic basis of plasticity is. Here, I highlight ways in which a fuller understanding of the e

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36

Benage, Mary Catherine. "The thermal evolution and dynamics of pyroclasts and pyroclastic density currents." Diss., Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/53962.

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The thermal evolution of pyroclastic density currents (PDCs) is the result of entrainment of ambient air, particle concentration, and initial eruptive temperature, which all impact PDC dynamics and their hazards, such as runout distance. The associated hazards and opaqueness of PDCs make it impossible for in-situ entrainment efficiencies or concentration measurements that would provide critical information on the thermal evolution and physical processes of PDCs. The thermal evolution of explosive eruptive events such as volcanic plumes and pyroclastic density currents (PDCs) is reflected in th

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37

Tinoco, José. "On the Spray Forming of Metals, the Formation of Porosity and the Heat Evolution during Solidification." Doctoral thesis, KTH, Casting of Metals, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3636.

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<p>This thesis deals with the heat evolution duringsolidification and its relation to the formation of porosity.It intends to improve the current understanding of theformation of porosity in cast materials with special interestin nodular cast iron and the spray forming process. Twodifferent systems, a Fe-based alloy, Cast iron, and a Ni-basedalloy, Inconel 625, are examined. The effect on the heatevolution of the morphology and the processing parameters inspray forming are treated.</p><p>An evaluation of the microstructural features, segregationbehavior and physical properties such as latent h

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38

Held, Torsten [Verfasser], Michael [Gutachter] Lässig, Johannes [Gutachter] Berg, and Erwin [Gutachter] Frey. "Universality in the Evolution of Molecular Phenotypes / Torsten Held ; Gutachter: Michael Lässig, Johannes Berg, Erwin Frey." Köln : Universitäts- und Stadtbibliothek Köln, 2018. http://d-nb.info/1168245753/34.

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39

Stritch, Kyle B. "Microstructural Evolution and Mechanical Properties in Simulated Heat Affected Zone Regions of Grade 91 Steel Welds." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1471444438.

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40

Araya, Rivera Nicolás Ignacio. "Influence of heat treatments on the microstructural evolution and mechanical properties of self-lubricating sintered steel." reponame:Repositório Institucional da UFSC, 2016. https://repositorio.ufsc.br/xmlui/handle/123456789/168221.

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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Ciência e Engenharia de Materiais, Florianópolis, 2016.<br>Made available in DSpace on 2016-09-20T05:04:22Z (GMT). No. of bitstreams: 1 340635.pdf: 3912420 bytes, checksum: 3da6e9bc99fb124fe20226106ae4105b (MD5) Previous issue date: 2016<br>A pesquisa e desenvolvimento de materiais autolubrificantes estão diretamente associados com o desejo de diminuir o consumo de energia em aplicações onde lubrificantes fluidos são indesejados. Pesquisar e caracterizar as suas propriedades se t

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41

Bair, Elizabeth Ashley. "The Consequences of Phenotypic Plasticity on Adaptive Rate in Escherichia coli." University of Akron / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=akron1416855604.

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42

Karimzadeh, F., S. N. Hosseini, and M. H. Enayati. "Structural Evolutions of Nanostructured CoAl Intermetallic Compound during Mechanical Alloying and Subsequent Heat Treatment." Thesis, Sumy State University, 2012. http://essuir.sumdu.edu.ua/handle/123456789/35113.

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Nanostructured B2-CoAl has been successfully synthesized directly by MA of nominal composition of Co50Al50. The CoAl phase was found to be formed in an ordered structure via a gradual reaction which completed in less than 10 h. However, further milling up to 45 h led to disordering of the CoAl with a relatively constant long-range order parameter of 0.82. Lattice parameter measurements showed that disordering of CoAl was caused by triple defect mechanism. The results of isothermal annealing showed that the grains grew after isothermal annealing up to 0.7 Tm but still remained below 100 nm

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43

Isobe, Hiroshi. "EVOLUTION OF THE HED (Howardite-Eucrite-Diogenite) PARENT BODY -PARTIAL MELT EXPERIMENTS ON DIFFERENTIATION PROCESSES-." 京都大学 (Kyoto University), 1991. http://hdl.handle.net/2433/86433.

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44

Pietzenuk, Björn [Verfasser], Maarten [Gutachter] Koornneef, and Achim [Gutachter] Tresch. "Repeated evolution of heat responsiveness among Brassicaceae COPIA transposable elements / Björn Pietzenuk. Gutachter: Maarten Koornneef ; Achim Tresch." Köln : Universitäts- und Stadtbibliothek Köln, 2015. http://d-nb.info/1105644898/34.

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45

Lee, Joon Ho. "The impacts of urban development on the evolution and structure of urban heat islands in Reading, UK." Thesis, University of Reading, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.515707.

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Gómez, de la Mora Luz de Lourdes. "Robust design as a driver of engine cylinder heads evolution : a framework for identifying product improvement paths." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/32473.

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Thesis (S.M.)--Massachusetts Institute of Technology, System Design and Management Program, 2005.<br>Includes bibliographical references (p. 89-90).<br>The fundamental goal of Robust Design is to improve the quality of a product by minimizing the effects of variation. A key contributor to robustness over the long term is R&D. Therefore, a framework is desired to help managers to identify promising improvement paths that a system may undergo, thus helping out in deciding R&D resource allocation. The goal of this thesis is to contribute to a framework for robustness inventions. This contribution

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47

Krutz, Nicholas J. "On the Path-Dependent Microstructure Evolution of an Advanced Powder Metallurgy Nickel-base Superalloy During Heat Treatment." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1606949447780975.

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Oguh, Jeremiah Chika. "Investigation of the microstructural evolution in Ti-6A1-4V alloy during cyclic hydrogenation and dehydrogenation heat treatment." Master's thesis, University of Cape Town, 2008. http://hdl.handle.net/11427/5495.

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Includes abstract.<br>Includes bibliographical references (leaves 87-90).<br>The temporary alloying process involves a two stage heat treatment during which hydrogen is firstly introduced into the titanium sample (hydrogenation), and secondly removed from the sample under vacuum annealing (dehydrogenation), thereby completing the cycle. During the hydrogenation stage, the high diffusivity of hydrogen in titanium alloys at elevated temperatures is used to introduce hydrogen into the sample. Hydrogen being a stabilizing element of titanium alloys, lowers the β → (α+ β) transition temperature and

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49

Beganovic, Thomas. "Evolution im Aluminium-Guss von Fahrwerk-Komponenten." Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2016. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-216071.

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Werkstoff- und Prozessgrenzen beschränken unter Beachtung ökonomischer und ökologischer Aspekte den Leichtbau gegossener Fahrwerk-Komponenten aus Al-Si-Legierungen. Zunächst werden Bauteilgewicht und Wärmebehandlungsprozess als beeinflussbare Hauptbeitragsleister für Emissionen im Herstellprozess identifiziert. Zu deren Verringerung werden abhängig von der Belastungsart mögliche Mindestwandstärken abgeleitet, die für den Kokillenguss um 35 % reduziert werden. Dies gelingt durch Einsatz neuartiger, das Formfüllverhalten verbessernder Oberflächenstrukturierungen von Gießwerkzeugen bei Einhaltung

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50

Mantri, Srinivas Aditya. "Evolution of Precipitates and Their Influence on the Mechanical Properties of β-Titanium Alloys". Thesis, University of North Texas, 2017. https://digital.library.unt.edu/ark:/67531/metadc1011759/.

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Over the last few decades, body-centered-cubic (bcc) beta (β) titanium alloys have largely been exploited as structural alloys owing to the richness in their microstructural features. These features, which lead to a unique combination of high specific strength and ductility, excellent hardenability, good fatigue performance, and corrosion resistance, make these alloys viable candidates for many applications, including aerospace, automobile, and orthopedic implants. The mechanical properties of these alloys strongly depend on the various phases present; which can be controlled by thermomechanic

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