Tesi sul tema "Clytie"
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Lindner, Alberto. "Redescrição e ciclo de vida de Clytia gracilis e Clytia linearis (Cnidaria, Hydrozoa, Campanulariidae)". Connect to this title online, 2000. http://www.teses.usp.br/teses/disponiveis/41/41133/tde-14012002-131337/.
Testo completoLindner, Alberto. "Redescrição e ciclo de vida de Clytia gracilis e Clytia linearis (Cnidaria, Hydrozoa, Campanulariidae)". Universidade de São Paulo, 2000. http://www.teses.usp.br/teses/disponiveis/41/41133/tde-14012002-131337/.
Testo completohe life-cycles of Clytia linearis (Thornely, 1899) and two species with characters considered diagnostic of Clytia gracilis (M. Sars, 1850) Clytia cf. gracilis sp. 1 and Clytia cf. gracilis sp. 2 have been studied based on specimens collected in the shallow subtidal coast of São Sebastião and Ilhabela, southeast Brazil, between February 1999 and April 2000. Medusae were cultured in the laboratory (22-24oC). Colonies of C. linearis are monosiphonic, sympodial, up to 21.5mm high and bearing up to 26 hydranths and 10 gonangia. Adult medusae reached 2.5-3.6mm in diameter, and up to 29 tentacles and 28 statocysts. The presence of microbasic mastigophore type C nematocysts distinguishes adult medusae of C. linearis from other species of Clytia. A band of microbasic mastigophore type A nematocysts in the umbrella, at the level of the circular canal, distinguishes adult medusae of Clytia cf. gracilis spp. 1 and 2 from other species of the genus. Adult medusae of C. cf. gracilis sp. 1 and C. cf. gracilis sp. 2 have up to 16 tentacles, and can be distinguished by the diameter of the umbrella: 6.6-10.1mm and 3.6-5.5mm, respectively. Colonies of C. cf. gracilis sp. 1 are usually erect and dichotomous, the hydrothecae are elongated and the gonothecae present in the hydrorhiza and pedicels. These features closely match with the description of C. gracilis, but both species differ in the morphometry of the gonothecae and microbasic mastigophore type B nematocysts: about 15mm (length) for C. gracilis and 9-10mm for C. cf. gracilis sp. 1. Type B nematocysts of C. cf. gracilis sp. 2 (about 14.5mm in length) are more similar in size to those of C. gracilis. However, the former species differs from the latter in the shape of the hydrothecae, by having gonothecae only at the hydrorhiza and polysiphonic well-developed colonies. A third species, C. cf. gracilis sp. 3, is described based on an unfertile colony. Aspects of the systematics of Clytia are discussed.
Quiroga, Artigas Gonzalo. "Light-induced oocyte maturation in the hydrozoan clytia hemisphaerica". Thesis, Paris 6, 2017. http://www.theses.fr/2017PA066284/document.
Testo completoTight control of oocyte maturation and of gamete release is essential for successful sexual reproduction in the animal kingdom. These processes are precisely coordinated by endocrine and/or environmental cues, depending on the species, but much remains to be learned about their regulation. Within the Cnidaria, many hydrozoan jellyfish are known to spawn mature gametes following dark/light transitions. To characterise the cellular and molecular machinery linking light reception and oocyte maturation initiation, I have studied the hydrozoan jellyfish Clytia hemisphaerica. My thesis work had three parts, each involving the identification of a key molecular component of this process.My initial study was part of a collaboration with N. Takeda (Asamushi) and R. Deguchi (Sendai), who identified the endogenous oocyte Maturation-Inducing Hormones (MIH) in Clytia as WPRPamide-related tetrapeptides, generated by cleavage of two neuropeptide precursors. I showed by in situ hybridization and immunofluorescence that Clytia MIH is produced by neurosecretory cells of the gonad ectoderm that co-express the two precursor genes, and that it is secreted upon light stimulation. This study paved the way for identification of regulators acting upstream and downstream of MIH release in the gonads, specifically the ones involved in photoreception in the gonad ectoderm, and in MIH reception by the oocytes. To identify the Clytia MIH receptor (CheMIHR) in the oocytes, I compiled a shortlist of 16 candidate G protein-coupled receptors (GPCRs) from gonad transcriptome data. I cloned all 16 cDNAs and, using a cell culture-based "GPCR deorphanization" assay (collaboration with P. Bauknecht and G. Jékély; MPI, Tübingen), identified one GPCR that was activated by synthetic MIH peptides. Its in vivo function as the essential MIH receptor was confirmed by CRISPR/Cas9 gene editing. Introduction of a frame-shift mutation in the CheMIHR gene impaired growth of Clytia polyp colonies and also the spawning behaviour of mature medusae. Confirming the function of CheMIHR, oocyte maturation in CheMIHR mutants could not be triggered by light or by synthetic MIH, but could be restored using cell-permeable analogues of cAMP, known to act downstream of MIH reception in hydrozoan oocytes. Phylogenetic analyses showed that Clytia MIHR is related to a subset of bilaterian neuropeptide hormone receptor families involved in diverse physiological processes, including regulation of reproduction. Accordingly, in situ hybridization showed the expression of Clytia MIH precursors and MIHR in non-gonadal neural cells, suggesting a wider role of Clytia MIH-MIHR besides oocyte maturation initiation.To address gonad photoreception, I showed that Clytia spawning is selectively induced by blue-cyan light, and then identified using gonad transcriptome data an opsin photopigment (Opsin9) highly expressed in the ectoderm. Strikingly, in situ hybridization showed that Opsin9 is expressed in the MIH-secreting cells. Introduction of a frame-shift mutation into the Opsin9 gene via CRISPR/Cas9 prevented oocyte maturation and spawning of mutant jellyfish in response to light. Anti-MIH immunofluorescence and rescue experiments with synthetic MIH showed that the essential function of Opsin9 is upstream of MIH release. Spawning in Clytia thus appears to be regulated by a dual function photosensory-neurosecretory cell type, perhaps retained from a distant metazoan ancestor
Quiroga, Artigas Gonzalo. "Light-induced oocyte maturation in the hydrozoan clytia hemisphaerica". Electronic Thesis or Diss., Paris 6, 2017. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2017PA066284.pdf.
Testo completoTight control of oocyte maturation and of gamete release is essential for successful sexual reproduction in the animal kingdom. These processes are precisely coordinated by endocrine and/or environmental cues, depending on the species, but much remains to be learned about their regulation. Within the Cnidaria, many hydrozoan jellyfish are known to spawn mature gametes following dark/light transitions. To characterise the cellular and molecular machinery linking light reception and oocyte maturation initiation, I have studied the hydrozoan jellyfish Clytia hemisphaerica. My thesis work had three parts, each involving the identification of a key molecular component of this process.My initial study was part of a collaboration with N. Takeda (Asamushi) and R. Deguchi (Sendai), who identified the endogenous oocyte Maturation-Inducing Hormones (MIH) in Clytia as WPRPamide-related tetrapeptides, generated by cleavage of two neuropeptide precursors. I showed by in situ hybridization and immunofluorescence that Clytia MIH is produced by neurosecretory cells of the gonad ectoderm that co-express the two precursor genes, and that it is secreted upon light stimulation. This study paved the way for identification of regulators acting upstream and downstream of MIH release in the gonads, specifically the ones involved in photoreception in the gonad ectoderm, and in MIH reception by the oocytes. To identify the Clytia MIH receptor (CheMIHR) in the oocytes, I compiled a shortlist of 16 candidate G protein-coupled receptors (GPCRs) from gonad transcriptome data. I cloned all 16 cDNAs and, using a cell culture-based "GPCR deorphanization" assay (collaboration with P. Bauknecht and G. Jékély; MPI, Tübingen), identified one GPCR that was activated by synthetic MIH peptides. Its in vivo function as the essential MIH receptor was confirmed by CRISPR/Cas9 gene editing. Introduction of a frame-shift mutation in the CheMIHR gene impaired growth of Clytia polyp colonies and also the spawning behaviour of mature medusae. Confirming the function of CheMIHR, oocyte maturation in CheMIHR mutants could not be triggered by light or by synthetic MIH, but could be restored using cell-permeable analogues of cAMP, known to act downstream of MIH reception in hydrozoan oocytes. Phylogenetic analyses showed that Clytia MIHR is related to a subset of bilaterian neuropeptide hormone receptor families involved in diverse physiological processes, including regulation of reproduction. Accordingly, in situ hybridization showed the expression of Clytia MIH precursors and MIHR in non-gonadal neural cells, suggesting a wider role of Clytia MIH-MIHR besides oocyte maturation initiation.To address gonad photoreception, I showed that Clytia spawning is selectively induced by blue-cyan light, and then identified using gonad transcriptome data an opsin photopigment (Opsin9) highly expressed in the ectoderm. Strikingly, in situ hybridization showed that Opsin9 is expressed in the MIH-secreting cells. Introduction of a frame-shift mutation into the Opsin9 gene via CRISPR/Cas9 prevented oocyte maturation and spawning of mutant jellyfish in response to light. Anti-MIH immunofluorescence and rescue experiments with synthetic MIH showed that the essential function of Opsin9 is upstream of MIH release. Spawning in Clytia thus appears to be regulated by a dual function photosensory-neurosecretory cell type, perhaps retained from a distant metazoan ancestor
Fourrage, Cécile. "Identification et caractérisation d'ARNs localisés et de protéines maternels chez Clytia hemisphaerica". Paris 6, 2010. http://www.theses.fr/2010PA066418.
Testo completoPeron, Sophie. "Bases cellulaires et moléculaires de la régénération chez la méduse Clytia hemisphaerica". Electronic Thesis or Diss., Sorbonne université, 2019. http://www.theses.fr/2019SORUS325.
Testo completoThe hydrozoan jellyfish Clytia hemisphaerica displays very efficient wound repair mechanisms after different types of injury. During my PhD, I investigated in the medusa the cellular and molecular processes involved in the regeneration of the feeding organ, called ‘manubrium’, ensuring the function of the mouth and stomach. I could define three successive phases during the wound response: wound healing, remodeling of the umbrella allowing the rapid recovery of the circular medusae shape, followed by the regeneration of some of the missing organs. Manubrium regeneration relies on local proliferation as well as cell migration from the gonads. Structural elements, especially the muscle fibers, play a key role in the repatterning process of the umbrella and the site of manubrium regeneration. I also generated transcriptomic data covering the early steps of regeneration. These data allowed the identification of markers of different cell types of the manubrium and documentation of their sequential reappearance during regeneration. They also revealed dynamic expression profiles for Wnt/β-catenin pathway components in the regenerating manubrium, strongly suggesting important roles for this pathway during regeneration. This work confirmed the potential of Clytia medusae as an experimental model for studying regeneration, allowing conserved cellular and molecular mechanisms to be uncovered, and our knowledge about the evolution of regeneration mechanisms in metazoans to be expanded
Ferraioli, Anna. "Comparison of cell types across life cycle stages of the hydrozoan Clytia hemisphaerica". Electronic Thesis or Diss., Sorbonne université, 2022. http://www.theses.fr/2022SORUS497.
Testo completoThe hydrozoan Clytia hemisphaerica displays a typical tri-phasic hydrozoan life cycle including a vegetatively propagating polyp colony and free-swimming medusa form as the sexually reproductive life stage. Male and female jellyfish spawn daily, triggered by light and after fertilisation a ciliated planula larva forms in about one day. After three days the planula settles and metamorphoses to give rise to a primary feeding polyp, the gastrozooid, founder of the polyp colony. The colony propagates by stolon extension and a second type of polyp, the gonozooid, releases medusa by budding. Analysis of the genome and the bulk transcriptome across the three life stages revealed specific gene expression programs for each stage (Leclère et al. 2019, Nature Ecology & Evolution). We are now extending this comparison to the level of individual cell types via single-cell RNA transcriptomics of Clytia medusa and larva. Together with L. Leclère and S. Chevalier (LBDV), we generated a female medusa cell atlas in collaboration with T. Chari and J. Gehring from L. Pachter’s lab and B. Weissbourd from D. Anderson’s lab at Caltech (Chari et al. 2021, Science Advances). Analysis of the medusa cell atlas revealed eight broad cell type classes including epidermis and gastrodermis, bioluminescent cells, oocytes and the hydrozoan multipotent stem cells (i cells) and their derivatives such as neurons, nematocytes and gland cells. In situ hybridisation analysis of expression patterns revealed previously uncharacterized subtypes including 14 neuronal subpopulations. Trajectory analysis of the nematocyte lineage revealed two distinct transcriptional programs within this cell class, a “nematoblast” phase, characterised by the production of the typical nematocyte capsule, and the nematocyte differentiation phase, characterised by the production of the nematocil apparatus. ScRNAseq for the Clytia planula required refinement of cell dissociation, fixation and sorting protocols (collaboration with Arnau Sebé-Pedros’ group, Barcelona). Our planula Cell Atlas consists of 4370 cells grouped in 19 cell clusters. Following in situ hybridisation expression patterns analysis of known and novel genes at three planula developmental stages we could assign cell identities and combine the 19 clusters in 8 broad cell classes. These correspond to the two cnidarian epithelial tissue layers, the epidermis and the gastrodermis, the hydrozoan stem cells (I-cells), the nematocytes (stinging cells), neural cells, aboral neurosecretory cells and distinct population of secretory cells, mucous cells and putative excretory cells (PEC). This Clytia planula Cell Types Atlas represents the first cell atlas of an hydrozoan larva and provides characterization of previously undescribed cell populations as well as further information on already known cell types. Comparison analysis of the two Cell Atlases revealed similar nematocyte transcriptional programs between stages indicating that the two distinct developmental programs persist during life cycle transitions. We could identify shared gene expression at the cell type level between life stages. Among those, further subtypes were only found in the adult. Analysis of gene expression programs also revealed the presence of putative stage specific cell types
Byrum, Christine Annette. "A cellular analysis of gastrulation by unipolar ingression in the hydrozoan Phialidium (Clytia) gregarium /". Full text (PDF) from UMI/Dissertation Abstracts International, 2001. http://wwwlib.umi.com/cr/utexas/fullcit?p3008293.
Testo completoKerr, Stephen. ""Good old Clyde", Clyde Carr, M.P. : Timaru and the art of incumbency, 1928-1962". Thesis, University of Canterbury. Department of History, 2003. http://hdl.handle.net/10092/4267.
Testo completoMeneau, Ferdinand. "De nouveaux modes de régulation d’ARPP19 éclairent la reprise de la méiose de l’ovocyte : une étude croisée chez la méduse et l'amphibien". Electronic Thesis or Diss., Sorbonne université, 2023. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2023SORUS363.pdf.
Testo completoMy thesis focused on the role of ARPP19, a protein at the center of meiosis resumption in oocytes. In all animals, oocyte meiosis is interrupted during prophase I. This long pause is used by the oocyte to accumulate nutritive and informative molecules that will serve during embryogenesis. The prophase arrest is due to an inactive form of MPF (M-phase Promoting Factor). This complex, made up of the Cdk1 kinase and Cyclin B, is the driving force behind eukaryotic cell division. In vertebrates, high levels of cAMP-dependent protein kinase (PKA) activity prevent MPF activation, keeping the oocyte blocked in prophase. A hormonal stimulus releases the prophase arrest and promotes meiosis resumption. In vertebrates, one of the first events induced by this stimulation is the inactivation of PKA, triggering a signaling pathway leading to MPF activation. My thesis focused on the mechanisms by which PKA controls MPF. In Xenopus, one of PKA key substrates is ARPP19, phosphorylated by PKA on serine 109 (S109). Following inactivation of PKA by the hormonal stimulation, ARPP19 is dephosphorylated by the PP2A-B55 phosphatase, indirectly enabling MPF activation. When MPF activates, ARPP19 undertakes another function. MPF activates the Greatwall kinase (Gwl), which phosphorylates ARPP19 on serine 67 (S67), converting it into an inhibitor of PP2A-B55. This inhibition is essential for division, as this phosphatase opposes MPF by dephosphorylating its substrates. The negative control exerted by PKA on MPF is not conserved in all metazoans. Many non-vertebrate species show an inverted mechanism: the release of the prophase block does not depend on PKA inactivation, but on its activation, as in the jellyfish Clytia hemisphaerica. ARPP19 is expressed in the oocytes of this species. The protein should therefore be phosphorylated by PKA in the Clytia oocyte. Why does it not block MPF activation? I have shown that Clytia ARPP19 (ClyARPP19) has a PKA phosphorylation site. However, ClyARPP19 is a poor substrate of PKA and is not phosphorylated by this kinase in the oocyte. Moreover, the mechanisms by which it inhibits MPF are not functional in Clytia. This double security level therefore protects Clytia oocyte from MPF inhibition by ARPP19. My results provide an evolutionary scenario for the negative control exerted by PKA on the resumption of meiosis in vertebrates. Unlike the control of ARPP19 by Gwl, conserved in all eukaryotes, the phosphorylation site of ARPP19 by PKA appears in metazoans, where it is conserved. But it is used as a regulator of meiosis resumption only in vertebrates, thanks to an increase of its phosphorylation potential by PKA. I then investigated the mechanisms by which the phosphorylated form of ARPP19 on S109 inhibits MPF. I discovered that in prophase, ARPP19 is weakly phosphorylated on S67 by a basal Gwl activity. Limiting this phosphorylation is critical to prevent spontaneous resumption of meiosis. I have shown that two types of regulation limit this phosphorylation by Gwl. The first is S109 phosphorylation by PKA, the second is an intramolecular regulation based on two domains in the C-terminal part of ARPP19. My work leads to a new vision of the prophase arrest, a metastable state in which ARPP19 is phosphorylated on both S109 (major) and S67 (minor). They provide insight into one negative role of PKA-phosphorylated ARPP19 on MPF activation: preventing phosphorylation by Gwl. Dephosphorylation of S109 in response to the hormone generates an ARPP19 protein accessible to Gwl, one of the key elements required for MPF activation
Paterson, Hugh T. "Seamen on the Clyde, 1880-1914 : work and industrial relations in the Clyde shipping industry". Thesis, University of Strathclyde, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.681750.
Testo completoPeebles, Hugh B. "Warship building on the Clyde, 1889-1939 : a financial study". Thesis, University of Stirling, 1986. http://hdl.handle.net/1893/1789.
Testo completoRuggiero, Antonella. "Impact of Wnt signalling on multipotent stem cell dynamics during Clytia hemisphaerica embryonic and larval development". Thesis, Paris 6, 2015. http://www.theses.fr/2015PA066561/document.
Testo completoThe aim of this work was to extend our understanding of the mechanisms regulating stem cell formation, specification and differentiation by studies in the non-bilaterian metazoan model Clytia hemisphaerica. Clytia, like other hydrozoan cnidarians, possess a particular population of multipotent stem cells called interstitial cells (i-cells), present during larval development and in the adult medusa, which are able to give rise both to somatic cell types and to gametes.In bilaterian animals Wnt/β-catenin signalling regulates fundamental developmental processes such primary body axis specification, but also regulates stem cell proliferation, lineage specification and differentiation. I investigated the role of Wnt/β-catenin signalling in i-cell specification and differentiation. The results obtained suggest that Wnt/β-catenin signalling is involved in the last step of differentiation for certain neuronal cell types, but not for somatic cell fate choice. In the second part of my study I investigated the role of Wnt/β-catenin signalling in i-cell formation during embryogenesis. The results indicated that during normal development i-cell formation is Wnt/β-catenin independent and probably driven by inheritance of germ plasm containing localised mRNAs from the egg animal pole. In contrast in embryo re-patterning following embryo bisection, Wnt/β-catenin signalling appears to be necessary for de novo i-cell formation in the absence of germ plasm. Thus two distinct mechanisms can lead to i-cell formation during embryogenesis. Overall the results obtained provided a better picture of how i-cells and their derivatives arise during embryogenesis and larval development
Ruggiero, Antonella. "Impact of Wnt signalling on multipotent stem cell dynamics during Clytia hemisphaerica embryonic and larval development". Electronic Thesis or Diss., Paris 6, 2015. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2015PA066561.pdf.
Testo completoThe aim of this work was to extend our understanding of the mechanisms regulating stem cell formation, specification and differentiation by studies in the non-bilaterian metazoan model Clytia hemisphaerica. Clytia, like other hydrozoan cnidarians, possess a particular population of multipotent stem cells called interstitial cells (i-cells), present during larval development and in the adult medusa, which are able to give rise both to somatic cell types and to gametes.In bilaterian animals Wnt/β-catenin signalling regulates fundamental developmental processes such primary body axis specification, but also regulates stem cell proliferation, lineage specification and differentiation. I investigated the role of Wnt/β-catenin signalling in i-cell specification and differentiation. The results obtained suggest that Wnt/β-catenin signalling is involved in the last step of differentiation for certain neuronal cell types, but not for somatic cell fate choice. In the second part of my study I investigated the role of Wnt/β-catenin signalling in i-cell formation during embryogenesis. The results indicated that during normal development i-cell formation is Wnt/β-catenin independent and probably driven by inheritance of germ plasm containing localised mRNAs from the egg animal pole. In contrast in embryo re-patterning following embryo bisection, Wnt/β-catenin signalling appears to be necessary for de novo i-cell formation in the absence of germ plasm. Thus two distinct mechanisms can lead to i-cell formation during embryogenesis. Overall the results obtained provided a better picture of how i-cells and their derivatives arise during embryogenesis and larval development
Denker, Elsa. "Développement et évolution des cellules neurosensorielles chez les cnidaires : apports de l’étude de la nématogenèse de la méduse de Clytia hemisphaerica". Paris 6, 2008. http://www.theses.fr/2008PA066034.
Testo completoBergmann, Melanie. "Fate of discarded invertebrates from Clyde Nephrops fishery". Thesis, University of London, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.394374.
Testo completoMidgley, Rik. "Circulation, mixing and renewal in the Clyde Sea". Thesis, Bangor University, 1998. https://research.bangor.ac.uk/portal/en/theses/circulation-mixing-and-renewal-in-the-clyde-sea(57fdd23e-8b80-4d01-a712-c38c6fd51a1b).html.
Testo completoEdgar, Petrena Joyce. "Biogeochemistry of polychlorinated biphenyls (PCBs) in estuarine sediments". Thesis, University of the West of Scotland, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343348.
Testo completoLee, Jae-Young. "A coupled physical-biological model for the Clyde Sea". Thesis, Edinburgh Napier University, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.247319.
Testo completoCao, Thi Quynh Nga, Thi Nhi Pham, Vu Tru Hoang, Van Phu Pham e My Hanh Le. "Additions to the genus Rhaphuma Pascoe, 1858 (Coleoptera: Cerambycidae: Cerambycinae: Clytini) from Vietnam". Technische Universität Dresden, 2018. https://tud.qucosa.de/id/qucosa%3A32713.
Testo completoBài báo thống kê danh sách 26 loài thuộc giống Rhaphuma Pascoe, 1858, trong số đó có 8 loài là ghi nhận mới cho khu hệ Xén tóc của Vietnam, đó là: Rhaphuma anongi Gressitt et Rondon, 1970; Rhaphuma clarina Gressitt et Rondon, 1970; Rhaphuma constricta Gressitt et Rondon, 1970; Rhaphuma diana Gahan, 1906; Rhaphuma eleodina Gressitt et Rondon, 1970; Rhaphuma elongata Gressitt et Rondon, 1970; Rhaphuma minima Gressitt et Rondon, 1970; Rhaphuma phiale Gahan, 1906. Ngoài ra, bài báo còn cung cấp thông tin về phân bố của mỗi loàiở trong nước cũng như trên thế giới.
Falzon, Clyde [Verfasser]. "Optimizing Household Biodegradable Waste Management within European Islands / Clyde Falzon". Aachen : Shaker, 2016. http://d-nb.info/1120864445/34.
Testo completoNickels, Scot 1959. "Northern conservation and tourism : the perceptions of Clyde River Inuit". Thesis, McGill University, 1992. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=56650.
Testo completoHamiliton, Kristina. "Infections of Clyde Sea crustaceans by the protist parasite Hematodinium". Thesis, Royal Holloway, University of London, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.498730.
Testo completoZonfrillo, Bernard. "The ecology of seabirds on Ailsa Craig, Firth of Clyde". Thesis, University of Glasgow, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.297511.
Testo completoSlater, Joanne Christine. "Optical determinants of phytoplankton primary productivity in the Clyde Sea". Thesis, University of Strathclyde, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.275121.
Testo completoAmiel, Aldine. "Apports du modèle Cnidaire : Clytia hemispaerica sur l'origine de la polarité primaire de l'ovocyte et sur l'étude du rôle de la kinase Mos dans la régulation de la maturation méiotique". Paris 6, 2008. http://www.theses.fr/2008PA066269.
Testo completoRippeth, Thomas Philip. "The control of stratification in a fjordic system (the Clyde Sea)". Thesis, Bangor University, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.358121.
Testo completoWalne, A. W. "A modelling study of nitrogen cycling in the Firth of Clyde". Thesis, Bangor University, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.358856.
Testo completoHughes, Isobel Mary. "The Neolithic and early Bronze Age in the Firth of Clyde". Thesis, University of Glasgow, 1987. http://theses.gla.ac.uk/1174/.
Testo completoHiser, Garrett. "Illustrating the Color Line: Charles W. Chesnutt and Clyde O DeLand". Cleveland State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=csu1481030226046336.
Testo completoChadwick, Gareth Paul. "Investigation of a novel diffusion sampler for sediment pore waters". Thesis, University of Strathclyde, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.366865.
Testo completoFigures, Julie Elizabeth. "A study of the biochemistry of selected metals in the Clyde Estuary". Thesis, University of the West of Scotland, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.360233.
Testo completoScott, Walter Paul Jason. "Discourses recognizing aesthetic innovation in cinema : Bonnie and Clyde : a case study". Thesis, Sheffield Hallam University, 2004. http://shura.shu.ac.uk/20337/.
Testo completoOliveira, Nadir Nóbrega. "Agô alafiju, odara! a presença de Clyde Wesley Morgan na Escola de Dança da UFBA, 1971 - 1978". reponame:Repositório Institucional da UFBA, 2006. http://www.repositorio.ufba.br/ri/handle/ri/9658.
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Esta dissertação destaca a trajetória artística e institucional de Clyde Wesley Morgan, de modo a favorecer estudos analíticos do legado coreográfico e cultural deixado por este profissional, para a dança e sua contextualidade étnica na Bahia. Além disso, consiste em uma análise estética e reflexiva dos processos de criação e encenação do espetáculo coreográfico Porque Oxalá Usa Ekodidé, dirigido por Clyde Wesley Morgan, em 1973, baseado no conto homônimo afro-brasileiro de Deoscóredes dos Santos, identificando suas matrizes estético-culturais (princípios, códigos, vocabulários e conteúdos), assim como as interfaces que apresenta transitando entre a dança e os demais elementos cênicos no espetáculo. O estudo averigua o papel central que a dança ocupa nos processos de concepção, criação e encenação dos trabalhos de Clyde Morgan. Dentre os objetivos desta pesquisa destacam-se: identificar, a partir de um breve enfoque antropológico, a origem e a presença da gestualidade abstraída no espetáculo, refletindo a sua utilização na coreografia do mesmo; ressaltar a contribuição deste coreógrafo como elemento formador e recriador de identidade cultural negra, na Bahia; identificar as principais manifestações afro descendentes que ocorreram na Bahia deste período, reconhecendo como processos propositivos de afirmação e cultura negra. A dança apresentada neste e em outros espetáculos reúne, de forma híbrida e singular, características de diversas matrizes estético-culturais (africanas, européias, brasileira, norte-americana, vocabulários da dança afro-brasileira, balé clássico e dança moderna). Além disso, foi detectado o encontro do tradicional e do moderno, determinando assim um dos mais expressivos resultados da criação proporcionada por Clyde Morgan, que também não perdeu de vista o conjunto de relações sociais e de poder vividos pelo grupo.
Salvador
Krasovec, Gabriel. "Compréhension du rôle morphogénétique de l'apoptose et de son évolution : apports de l'étude de la métamorphose de Ciona intestinalis (Tunicata) et de Clytia hemisphaerica (Cnidaria)". Electronic Thesis or Diss., Sorbonne université, 2018. http://www.theses.fr/2018SORUS266.
Testo completoApoptosis has been considered as merely required for the removal of supernumerary cells or larval structures by dismantling cells with a characteristic and conserved set of morphological and biochemical features (Destructive Function of Apoptosis, DFA). Accumulating evidences show how apoptotic cells can trigger and modulate other cell behaviors (migration) or cell fates (proliferation, survival, differentiation) during very different morphogenetic events in numbers of animals. These studies led us to define a novel morphogenetic role of apoptosis, hereafter referred as the Constructive Function of Apoptosis (CFA). To investigate the CFA and its evolution in animals, I initiated characterization of CFA during metamorphosis of two distantly related species with a key phylogenetic position, the cnidarian Clytia hemisphaerica, and the tunicate, Ciona intestinalis. In C. hemisphaerica, I have identified and characterized endodermic and ectodermic apoptosis in planula larva. This apoptosis occurred in the larva at the same area and at the same time with the proliferation and differentiation of i-cells and nematocytes migration. All together, these results arguing in favor of planula metamorphosis as an excellent model to study CFA. In C. intestinalis, I have demonstrated that primordial germ cells migration is due to CFA during the tail regression process, leading to the molecular characterization of CFA in this model
De, Silva Michael S. W. "Chemical and biological aspects of using dredged river Clyde sediments for land restoration". Thesis, University of Strathclyde, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.292081.
Testo completoRain, Holly. "Clyde Fitch's dramatisations of gender and society on the fin de siècle stage". Thesis, University of Central Lancashire, 2018. http://clok.uclan.ac.uk/24036/.
Testo completoCondamine, Thomas. "Étude comparative d'expression de gènes chez un scyphozoaire (Aurelia aurita) et un hydrozoaire (Clytia hemisphaerica) : nouvelles perspectives sur certaines innovations évolutives qui caractérisent leurs stades méduse". Electronic Thesis or Diss., Sorbonne université, 2018. http://www.theses.fr/2018SORUS384.
Testo completoThree of the five classes of cnidarians possess pelagic medusae. The latter are classically considered homologous, i.e. inherited from a planktonic stage acquired in the ancestor of all medusozoans. However, an impressive array of fundamental differences opposes hydromedusae to cubomedusae/scyphomedusae, e.g. concerning their locomotory nervous systems, sensory organs, and ontogeny. Could there have been several convergent acquisitions of a medusa stage? The research presented here is based on comparative study of a hydromedusa (Clytia hemisphaerica) and a scyphomedusa (Aurelia aurita), involving gene phylogenies, and gene expression surveys using RNA-seq, in situ hybridisation, and qPCR. The main objectives were (i) an improved characterisation of the Clytia tentacle system; and comparisons between these two medusae, of (ii) the deployment of key actors in animal development and morphogenesis, and of (iii) some proteins associated with striated muscles which are absent in polyps and convergent with those of bilaterians. Comparison of Wnt expressions supports conservation among cnidarians of the roles held by several signalling pathways downstream of the Wnt ligands, in the organisation of the oral-aboral polarity and of some elements of the nervous system, and suggests that tentacles and tetraradial symmetry may not be homologous between hydro- and scyphomedusae. Independent recruitments of tropomyosin forms specific to the striated muscles strongly advocate convergent origins of striated muscles and thereby of pelagic locomotion between hydro- and scyphomedusae. These findings challenge the classical scenario of a single medusa acquisition during cnidarian evolution
Said, Dhiya Mustafa Mohamed. "Reservoir geophysics of the Clyde field : the development and application of quantitative analysis techniques". Thesis, University of Aberdeen, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.327396.
Testo completoCortis, Robert. "A study of potentially toxic elements in the Forth and Clyde Canal, Scotland, UK". Thesis, University of Strathclyde, 2013. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=25515.
Testo completoSmith, Ronald Stuart Martin. "The biology of larval and juvenile Nephrops norvegicus (L.) in the Firth of Clyde". Thesis, University of Glasgow, 1987. http://theses.gla.ac.uk/3511/.
Testo completoWestcott, Mark. "Refining crude or crude refinements? Workplace industrial relations at Shell Clyde refinery, 1974-1994". Thesis, The University of Sydney, 1997. https://hdl.handle.net/2123/27613.
Testo completoHarder, Miriam. "Traditional and monetary resource sharing in an Inuit «Ilagiit»: Socioeconomic relations in Clyde River, Nunavut". Thesis, McGill University, 2010. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=95231.
Testo completoDepuis leur centralisation et l'établissement de communautés permanentes, les Inuit ont établi une économie mixte, un mélange de chasse de subsistance et de revenu monétaire. Des changements socioéconomiques au Nunavut altèrent les coutumes de partage de ressources. Ces jours-ci, l'accès au capital non-traditionnel est nécessaire pour assurer la survie de la culture de subsistance Inuit. Par contre, cet accès n'est pas également distribué parmi les membres de la communauté. En suivant le trajet des ressources traditionnelles et monétaires dans une ilagiit, ou famille élargie, à Clyde River, au Nunavut, ce projet démontre que les règles coutumières du partage continuent à guider la redistribution de ressources traditionnelles. D'autre part, le partage de ressources monétaires est plus complexe, puisque la disponibilité de ces ressources individualisées est plus contrainte. La comparaison entre une étude similaire entreprise en 1999 et cette étude (de 2009) démontre que les changements dans la structure sociale de cet ilagiit compliquent leur organisation économique, même si la distribution de ressources est toujours guidée par les priorités de l'économie de subsistance.
Sharpe, Lorna. "Geophysical, geochemical and arable crop responses to archaeological sites in the Upper Clyde Valley, Scotland". Thesis, University of Glasgow, 2004. http://theses.gla.ac.uk/1162/.
Testo completoThomas, Brynley Robert. "Clyde sediments : physical conditioning in relation to use as a topsoil product for land reclamation". Thesis, University of Strathclyde, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.385501.
Testo completoWelden, Natalie Ann Cooper. "Microplastic pollution in the Clyde sea area : a study using the indicator species Nephrops norvegicus". Thesis, University of Glasgow, 2015. http://theses.gla.ac.uk/6377/.
Testo completoBirong, Christine. "The Influence of Police Brutality on the American Indian Movement's Establishment in Minneapolis, 1968-69". Thesis, The University of Arizona, 2009. http://hdl.handle.net/10150/193405.
Testo completoBuchanan, David. "The application of information technology to dredging management (with particular reference to the Port of Clyde)". Thesis, University of Strathclyde, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.264569.
Testo completoMeegan, David. "A minister reflects : a critical analysis of Clyde Cameron's view of Gough Whitlam and the Whitlam government /". Title page, contents and introduction only, 1989. http://web4.library.adelaide.edu.au/theses/09AR/09arm494.pdf.
Testo completoHeaton, V. "Decomposition of Human Remains Recovered from the River Clyde, Scotland: A comparative Study of UK Fluvial Systems". Thesis, University of Central Lancashire, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.527060.
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