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Dissertations / Theses on the topic 'Seam cells'

Author: Grafiati
Published: 4 June 2021
Last updated: 6 February 2022

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1

Gilbert, Sophie Patricia Rose. "Investigating the role of pal-1, the C. elegans caudal homologue, in the development of the stem-like seam cells." Thesis, University of Oxford, 2015. https://ora.ox.ac.uk/objects/uuid:a10d8fcc-d300-4eda-a82b-c5106cafd47a.

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An organism's epithelium provides essential protection against mechanical stress and pathogenic infection, as well as specialised secretory and sensory functions. Intriguingly, at the end of the first larval moult in C. elegans, epidermal P cells, which until now have comprised the majority of the ventral epidermis, migrate and remodel, relinquishing their epidermal role before taking on neuroectoblast fate. This leaves a ventral 'hole' in the architecture of the C. elegans epidermis. This work describes how this hole is filled by a hitherto-overlooked ventral intercalation event that mirrors
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2

Takigawa, Toshiya. "Terminal differentiation of palatal medial edge epithelial cells in vitro is not necessarily dependent on palatal shelf contact and midline epithelial seam formation." Kyoto University, 2005. http://hdl.handle.net/2433/144694.

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3

Brabin, Charles Edward. "Investigating the regulation and functioning of RNT-1 and BRO-1 in C. elegans." Thesis, University of Oxford, 2012. http://ora.ox.ac.uk/objects/uuid:6d9cd263-1051-443a-b064-c0c329252b28.

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The stem cell-like seam cells of the nematode, Caenorhabditis elegans, represent a tractable and powerful model for studying stem cell biology. rnt-1, the worm homologue of the mammalian RUNX family of transcription factors, together with the CBFβ homologue bro-1, is essential for the proliferation of the seam cells. RUNX genes and CBFβ are important regulators of stem cell development in mammals, and are associated with a variety of cancers. The worm seam cell model offers an opportunity to examine how these genes function in stem cell biology. The aim of this work was to shed light on the ge
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4

Mahapatra, Manoj Kumar. "Study of Seal Glass for Solid Oxide Fuel/Electrolyzer Cells." Diss., Virginia Tech, 2009. http://hdl.handle.net/10919/77281.

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Seal glass is essential and plays a crucial role in solid oxide fuel/electrolyzer cell performance and durability. A seal glass should have a combination of thermal, chemical, mechanical, and electrical properties in order to seal different cell components and stacks and prevent gas leakage. All the desired properties can simultaneously be obtained in a seal glass by suitable compositional design. In this dissertation, SrO-La₂O₃-A₂O₃-B₂O₃3-SiO₂ based seal glasses have been developed and composition-structure-property relationships have been investigated. B₂O₃ free SrO-La₂O₃-Al₂O₃-SiO₂ based se
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5

Story, Christopher B. "Shape Memory Alloy / Glass Composite Seal for Solid Oxide Fuel Cells." Thesis, Virginia Tech, 2007. http://hdl.handle.net/10919/42709.

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Widespread use of solid oxide fuel cells is hindered by a lack of long-term durability of seals between metallic and ceramic components caused by thermal expansion mismatch induced cracking. A novel gas seal design incorporating an engineered thermal expansion gradient in a SrO-La2O3-Al2O3-B2O3-SiO2 glass matrix with a TiNiHf shape memory alloy mesh for active stress relief and crack healing is being developed. Coefficient of thermal expansion (CTE) measurements of the seal and fuel cell components shows the possibility for a thermal expansion gradient. Differential scanning calorimetry and
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6

Milhans, Jacqueline Linda. "Microstructure-based solid oxide fuel cell seal design using statistical mechanics." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/37188.

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Solid oxide fuel cells (SOFC) in a flat-plate configuration require a hermetic seal between the fuel and air sides of the electrodes, and this seal must withstand a variety of thermally-induced stresses over the lifetime of the cell. In this study, quantitative microstructure-property relationships are developed to predict optimum seal structures for mechanical properties and thermal expansion coefficient criteria. These relationships are used to create an inverse approach to characterizing the processing method from the desired microstructure. The main focus of the work concentrates on provi
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7

Ruvolo, Sean Patrick. "An Investigation into Pronuclear Migration in Fertilized Sea Urchin Cells." Thesis, Boston College, 2016. http://hdl.handle.net/2345/bc-ir:107271.

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Thesis advisor: David Burgess<br>After fertilization, centration of the nucleus is a necessary first step for ensuring proper cell division and embryonic development in many proliferating cells such as the sea urchin. In order for the nucleus to migrate to the cell center, the sperm aster must first capture the female pronucleus for fusion. While microtubules (MTs) are known to be necessary for centration, the precise mechanisms for both capture and centration remain undetermined. Therefore, the purpose of this research was to investigate the role of MTs in nuclear centration. Fertilized sea u
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8

Swallow, Michael Andrew Carleton University Dissertation Biology. "Determination and differentiation of muscle cells in the tadpole larva of the Ascidian Boltenia Villosa." Ottawa, 1992.

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9

Bredhult, Carolina. "Effects of some Endocrine Disruptors on Human and Grey Seal Uterine Cells." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-8334.

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10

Tramontozzi, Peter J. "Microtubule Dynamics During Sperm Aster Centration in Fertilized Sea Urchin Cells." Thesis, Boston College, 2018. http://hdl.handle.net/2345/bc-ir:108018.

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Thesis advisor: David R. Burgess<br>Centration of the nucleus after fertilization is an essential step for setting-up cell division and proper embryonic development in many proliferating cells such as the sea urchin. The sperm aster must capture the female pronucleus for fusion as well as the nucleus becoming positioned at the center of the cell. Microtubules (MTs) are known to play a role in this centration but the exact mechanism remains unknown. This begins to investigate current models of nuclear centration and the role of various interactions. Three phases of migration were observed as th
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11

Parihar, Shailendra S. "High Temperature Seals for Solid Oxide Fuel Cells." University of Cincinnati / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1172490697.

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12

Young, Carina Saxton. "Decadal variability of the Pacific subtropical cells and equatorial sea surface temperature." Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/31671.

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Thesis (M. S.)--Earth and Atmospheric Sciences, Georgia Institute of Technology, 2010.<br>Committee Chair: Di Lorenzo, Emanuele; Committee Member: Bracco, Annalisa; Committee Member: Lynch-Stieglitz, Jean. Part of the SMARTech Electronic Thesis and Dissertation Collection.
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13

Saad, Nicole Liliane. "Investigating the role of rnt-1 and bro-1 in seam cell proliferation in C elegans." Thesis, University of Oxford, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.531996.

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14

Ding, Siyu Serena. "Elucidating the role of non-muscle myosin II in Caenorhabditis elegans stem-like seam cell divisions." Thesis, University of Oxford, 2015. https://ora.ox.ac.uk/objects/uuid:5b5cb805-327a-4a58-b3db-3787f5264efc.

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Caenorhabiditis elegans seam cells (SC) are multipotent neuroectodermal cells that undergo both symmetrical and asymmetrical divisions throughout larval development, thus providing a valuable model system to gain mechanistic insights into the regulation of asymmetric divisions and the switch between the symmetric and asymmetric modes of division. Reiterative SC asymmetric division typically produces a differentiative anterior daughter that moves out of the seam line and joins the hyp7 syncytium and a proliferative posterior daughter that retains seam fate and carries on dividing. Non-muscle my
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15

Guzman, Montanez Felipe. "SAMARIUM-BASED INTERMEDIATE TEMPERATURE SOLID OXIDE FUEL CELLS." University of Akron / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=akron1134056820.

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16

Pines, J. N. J. "Cyclin : a major maternal message in sea urchin eggs." Thesis, University of Cambridge, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233321.

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In this thesis I describe the construction of a cDNA library of maternal mRNA from the sea-urchin <i>Arbacia punctulata</i> and the subsequent isolation of a cDNA clone for the cylin protein using the technique of hybrid-arrest of translation. The cyclin protein was originally identified in sea-urchin embryos as a protein that was strongly synthesised after fertilisation but destroyed at each cell division (Evans <i>et al</i>, 1983). The DNA sequence of the putative cyclin clone was determined. It contains an open reading frame for a protein of M<SUB>r</SUB>46,000 which bears significant homol
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17

Hardingham, Christopher Mark. "GaAs and GaAs/Ge solar cells : a device and materials study using SEM-EBIC." Thesis, Imperial College London, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.267028.

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18

Randström, Sara. "New Materials for the Molten Carbonate Fuel Cell." Doctoral thesis, KTH, Tillämpad elektrokemi, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4636.

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Smältkarbonatbränslecellen (MCFC) är en högtemperaturbränslecell för stationära applikationer. Den har samma höga totalverkningsgrad som konventionella kraftvärme-anläggningar, men kan byggas i mindre moduler (från 250 kWe). De små modulerna och den bränsleflexibilitet (naturgas, biogas, etanol, diesel) som MCFC har, gör den intressant för exempelvis industrier med organiska restprodukter och höga krav på tillförlitlighet. Den höga temperaturen och närvaron av en saltsmälta gör dock materialdegradering till en viktig faktor för forskning och utveckling inom området. För även om de fälttester s
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19

Stephens, Tricia. "CHARACTERIZATION OF PIGMENT CELL SPECIFIC GENES IN THE SEA URCHIN EMBRYO (STRONGYLOCENTROTUS PURPURATUS)." Master's thesis, University of Central Florida, 2007. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2692.

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In sea urchin development, cell fate specification appears by the 60-cell stage embryo when several embryonic territories are recognized: the small micromeres, the large micromeres which will generate primary mesenchyme cells, the vegetal2 layer that will give rise to pigment cells, immunocytes, and muscle cells, the vegetal1 layer, as well as the oral and aboral ectoderm. A Delta-Notch signaling event is required for the differential specification of mesodermal cells that will give rise to secondary mesenchyme cells (SMCs). SMCs produce four cell types: pigment cells, blastocoelar cells, circ
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20

Wätjen, Jörn Timo. "Microscopic Characterisation of Solar Cells : An Electron Microscopy Study of Cu(In,Ga)Se2 and Cu2ZnSn(S,Se)4 Solar Cells." Doctoral thesis, Uppsala universitet, Fasta tillståndets elektronik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-199432.

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The sun provides us with a surplus of energy convertible to electricity using solar cells. This thesis focuses on solar cells based on chalcopyrite (CIGSe) as well as kesterite (CZTS(e)) absorber layers. These materials yield record efficiencies of 20.4 % and 11.1 %, respectively. Especially for CZTS(e), the absorber layers often do not consist of one single desired phase but can exhibit areas with deviating material properties, referred to as secondary phases. Furthermore, several material layers are required for a working solar cell, each exhibiting interfaces. Even though secondary phases a
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21

García, María Guadalupe. "Characterization of sea urchin focal adhesion kinase (FAK) : roles in epithelial and primary mesenchyme morphogenesis /." Thesis, Connect to this title online; UW restricted, 2001. http://hdl.handle.net/1773/5161.

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22

Adomako-Ankomah, Ashrifia. "A Molecular Analysis of Skeletal Morphogenesis in the Sea Urchin Embryo." Research Showcase @ CMU, 2013. http://repository.cmu.edu/dissertations/217.

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Cell migration and differentiation are fundamental aspects of embryogenesis, essential to the development of any complex multicellular organism. Like most biological processes, the directional migration of different cell types and their differentiation into various specified cells with unique functions are regulated by intricate mechanisms, many details of which remain unresolved. The sea urchin embryo, which is optically clear and amenable to a wide variety of experimental manipulations, is an excellent model system to study these processes. Of specific significance is the formation of the em
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23

Koroliov, Anton. "Semiconductor characterization by terahertz radiation pulses." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2014. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2014~D_20140922_141151-18493.

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The goal of this dissertation work was to develop pulsed terahertz radiation techniques and use them to study different properties of the semiconductor materials and semiconductor devices. Three groups of materials were investigated: GaAsBi, GaAs nanowires, copper-indium chalcogenide. The used techniques are THz-TDS, optical pump – THZ probe, optical pump – optical probe and THz excitation spectral measurements. The main results that were presented in this dissertation are the following: thermal annealing has resulted in the shortening of electron lifetime in GaAsBi to picosecond values, which
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24

Koroliov, Anton. "Puslaidininkių charakterizavimas terahercinės spinduliuotės impulsais." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2014. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2014~D_20140922_141205-51499.

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Šio darbo tikslas buvo susipažinti su terahercinių impulsų generavimo ir detektavimo būdais, įsisavinti įvairias terahercinių impulsų panaudojimo metodikas bei pritaikyti jas puslaidininkių medžiagų ir puslaidininkinių prietaisų tyrimui. Buvo tirtos trys medžiagų grupės: GaAsBi, GaAs nanovielutės ir Cu – In chalkogenidai. Tyrimui buvo naudojamos: THz – TDS, optinio žadinimo – THz zondavimo, optinio žadinimo – optinio zondavimo bei THz sužadinimo spektroskopijos metodikos. Pagrindiniai rezultatai aprašyti disertacijoje yra šie: GaAsBi bandinių atkaitinimas stipriai sumažino krūvininkų gyvavimo
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25

Crawford, Bryan D. "A novel laminin receptor expressed by invasive mesenchyme cells during gastrulation in sea urchin embryos." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0013/NQ61634.pdf.

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26

Paitio, José Rui Lima. "Vision and behaviour in deep-sea fishes : distribution of neural retinal cells in Myctophidae i." Master's thesis, Universidade de Aveiro, 2014. http://hdl.handle.net/10773/14040.

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Mestrado em Biologia Marinha<br>This work aims to analyse the density and distribution of neuron cells on retinae of myctophid fishes in relation to ecological and behavioural parameters. Retinal wholemounting technique allowed the observation of topographic densities for photoreceptors (PRs), retinal ganglion cells (RGCs) and amacrine cells (ACs) in adult myctophids. These data allowed the identification of retinal specializations and the estimation of visual acuity and sensitivity, and sensitivity to bioluminescence flashes and to downwelling light. The seven analysed myctophid specie
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27

Larman, Mark Graham. "Calcium and MAP kinase regulation during the cell cycle." Thesis, University of Newcastle Upon Tyne, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.340683.

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28

Dunn, Simon Robert. "Cell death mechanisms during bleaching of the sea anemone Aiptasia sp." Thesis, University of Newcastle Upon Tyne, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.250114.

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29

Heilmann, Jens Peter. "Eutrophication, phytoplankton productivity and the size structure of the phytoplankton community." Thesis, Bangor University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.263279.

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30

Scherer, Sonja Daniela. "Protein purification and cDNA cloning of suGF1 : a sea urchin nuclear DNA-binding factor." Doctoral thesis, University of Cape Town, 1998. http://hdl.handle.net/11427/21905.

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The upstream regulatory regions of numerous genes contain contiguous deoxyguanosine residues (G·C-rich sequences) which have been implicated in the regulation of gene expression, since they may involve alterations in their DNA structure, the binding of G-string factors and in some cases even the displacement of a nucleosome positioned over this area. A poly( dG).poly( de)-binding protein (suGF1) has previously been identified and purified on a small scale from embryonic nuclear extracts of the sea urchin Parechinus angulosus (1, 2). suGF1 binds in vitro to the H1-H4 intergenic region of the ea
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31

LOPES, Albert Richard Moraes. "Eficiência energética em redes sustentáveis: uma avaliação baseada em redes small cells e backhaul." Universidade Federal do Pará, 2015. http://repositorio.ufpa.br/jspui/handle/2011/7415.

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Submitted by Edisangela Bastos (edisangela@ufpa.br) on 2017-01-26T12:51:36Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Dissertacao_EficienciaEnergeticaRedes.pdf: 2582901 bytes, checksum: 3c2e3a777d7d89dbe7945256b638bdcb (MD5)<br>Approved for entry into archive by Edisangela Bastos (edisangela@ufpa.br) on 2017-01-26T13:06:49Z (GMT) No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Dissertacao_EficienciaEnergeticaRedes.pdf: 2582901 bytes, checksum: 3c2e3a777d7d89dbe7945256b638bdcb (MD5)<br>Made availa
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32

Ting, Cara M. "Designing Biomaterial Surfaces to Enhance Adhesion at the Skin-Implant Interface." Digital WPI, 2011. https://digitalcommons.wpi.edu/etd-theses/686.

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The skin-implant interface of percutaneous devices is generally weak and can fail when excessive loading disrupts the sealing of the interface by dermal and epidermal cells and tissue. As such, the formation of a stable implant-skin junction is a major factor in determining percutaneous implant success. In this study, we used functionalized self-assembled monolayers (SAMs) with discrete surface properties as model systems to assess the effects of biomaterial surface properties on controlling fibronectin (FN) adsorption and keratinocyte spreading and adhesion. The surface properties investigate
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33

Vandana, Singh. "Development of High Performance Electrodes for High Temperature Solid Oxide Electrolysis Cells." 京都大学 (Kyoto University), 2016. http://hdl.handle.net/2433/215556.

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34

Soares, Mariana Aparecida. "Perfil audiológico de adultos com e sem hipertensão arterial." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/5/5162/tde-24062014-114748/.

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Introdução: Sabe-se que muitas pessoas sofrem de hipertensão arterial sistêmica (HAS) e indivíduos cada vez mais jovens estão apresentando este quadro. A HAS pode causar várias complicações na saúde geral do indivíduo, em virtude do comprometimento da circulação sanguínea, o que pode afetar até mesmo o sistema auditivo. Porém, os estudos encontrados na literatura, até o momento, são bastante controversos quanto à influência ou não da HAS no sistema auditivo periférico. Objetivos: Verificar se existe influência da hipertensão arterial no sistema auditivo periférico, por meio dos achados na audi
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35

au, jeremy shaw@uwa edu, and Jeremy Shaw. "Biomineralisation processes in the radula teeth of the chiton Acanthopleura hirtosa (Mollusca: Polyplacophora)." Murdoch University, 2007. http://wwwlib.murdoch.edu.au/adt/browse/view/adt-MU20080703.163505.

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A detailed row by row investigation of major lateral tooth cusp mineralisation, together with the concomitant development of the superior epithelial tissue surrounding the teeth of the chiton Acanthopleura hirtosa has been undertaken using a combination of light microscopy, and scanning and transmission electron microscopy. A holistic approach has been adopted that encompasses observations over a range of spatial scales, from whole radula mineralisation processes to those occurring within individual tooth cusps at various stages of development. In addition, mineralisation in radulae from fresh
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36

Rogers, David. "CIS-REGULATORY ANALYSIS OF THE PIGMENT CELL DIFFERENTIATION GENE POLYKETIDE SYNTHASE." Master's thesis, University of Central Florida, 2008. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2701.

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The analysis of Gene Regulatory Networks (GRNs) is essential to understanding the complete process of embryo development. Elucidating every gene regulatory circuit from maternal regulatory inputs all the way to the activation of differentiation gene batteries is an important step in increasing our understanding of developmental biology. In this work I study the cis-regulatory architecture of a pigment cell differentiation gene, polyketide synthase (SpPks) in the sea urchin Strongylocentrotus purpuratus. SpPks encodes an enzyme that is responsible for the biosynthesis of the sea urchin pigment
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37

Ejaz, Ahmed. "Growth and characterisation of Cu(In,Ga)Seâ??2 thin films for solar cell applications." Thesis, University of Salford, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.490238.

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38

Perillo, Margherita. "Evolutionary origin and diversification of pancreatic cell types during sea urchin gut morphogenesis." Thesis, Open University, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.664282.

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The pancreas is a gland composed essentially of digestive enzymes-producing acinar cells and hormone-producing endocrine cells. In particular, insulin is one of the best-known pancreatic hormones and it is a member of the large insulin superfamily, a group of evolutionary related proteins that includes also many insulin-like peptides (ILPs) in invertebrates. Although the pancreas has been extensively studied in vertebrates, little information is reported on ILPs and homologues of pancreatic endocrine and exocrine cell types in non-chordate deuterostomes. In order to fill this critical gap in p
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39

MacLeod, James D. (James Donald) Carleton University Dissertation Engineering Aeronautical. "A derivation of gross thrust for a sea-level jet engine test cell." Ottawa, 1988.

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40

Randström, Sara. "Characterisation of materials for use in the molten carbonate fuel cell." Licentiate thesis, KTH, Chemical Engineering and Technology, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3925.

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<p>Fuel cells are promising candidates for converting chemical energy into electrical energy. The Molten Carbonate Fuel Cell (MCFC) is a high temperature fuel cell that produces electrical energy from a variety of fuels containing hydrogen, hydrocarbons and carbon monoxide. Since the waste heat has a high temperature it can also be used leading to a high overall efficiency.</p><p>Material degradation and the cost of the components are the problems for the commercialisation of MCFC. Although there are companies around the world starting to commercialise MCFC some further cost reduction is neede
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41

Smith, Margaret Snoke. "The role of axis formation in the evolution of direct development in the sea urchin Heliocidaris erythrogramma." [Bloomington, Ind.] : Indiana University, 2008. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3330785.

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Thesis (Ph.D.)--Indiana University, Dept. of Biology, 2008.<br>Title from PDF t.p. (viewed on Jul 22, 2009). Source: Dissertation Abstracts International, Volume: 69-10, Section: B, page: 5873. Adviser: Rudolf A. Raff.
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42

Sall, Thierno. "Preparation and Characterization of SnS thin films by Chemical Spray Pyrolysis for fabrication of solar cells." Doctoral thesis, Universitat Politècnica de València, 2018. http://hdl.handle.net/10251/95412.

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El objetivo de esta tesis es la síntesis de películas delgadas de SnS utilizando técnicas de bajo coste con el fin de fabricar células solares. Nuestra contribución radica en estudiar nuevos materiales susceptibles de ser utilizados para aplicaciones fotovoltaicas, y que puedan ser preparados con técnicas de bajo coste como la técnica de Pyrolysis de Spray Químico (CSP) y caracterizar algunos materiales elegidos para este fin como el Sulfuro de Estaño (SnS). Se han fabricado células solares a partir de la disposición de capas: Mo / SnS / Tampón / i-ZnO / ZnO: Al / Al / Metal. Las capas de buff
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43

Hoffman, Matthew P. "The Cortical response to RhoA is regulated during mitosis. Annotation of cytoskeletal and motility proteins in the sea urchin genome assembly." Thesis, Boston College, 2008. http://hdl.handle.net/2345/bc-ir:107671.

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Thesis advisor: David Burgess<br>This doctoral thesis addresses two central topics divided into separate chapters. In Chapter 1: The cortical response to RhoA is regulated during mitosis, experimental findings using sea urchin embryos are presented that demonstrate that the small GTPase RhoA participates in positive signaling for cell division and that this activity is negatively regulated prior to anaphase. In a second series of experiments, myosin phosphatase is shown to be a central negative regulator of myosin activity during the cell cycle through metaphase of mitosis and experimental fin
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44

Stuart, Emma, and n/a. "Therapeutic potential of SERM and EGCG drug combinations for the treatment of basal-like breast cancer." University of Otago. Department of Pharmacology & Toxicology, 2009. http://adt.otago.ac.nz./public/adt-NZDU20090708.090405.

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Basal-like breast cancer represents a subgroup of mammary cancers associated with a particularly poor prognosis, as they are refractory to current targeted therapies employed for the treatment of breast cancer. In this work I aimed to explore the therapeutic potential of selective estrogen receptor modulators (SERMs), a targeted breast cancer treatment, in combination with epigallocatechin gallate (EGCG), for the treatment of basal-like breast cancer, using MDA-MB-231 cell as an in vitro model of the disease. A significant reduction in MDA-MB-231 cell number and a significant increase in cytot
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Gullia, Alessandro. "Thrust and Flow Prediction in Gas Turbine Engine Indoor Sea-Level Test Cell Facilities." Thesis, Cranfield University, 2006. http://dspace.lib.cranfield.ac.uk/handle/1826/7496.

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The principal aim of this research was to provide a detailed understanding of the performance of gas turbine engines inside indoor sea-level test beds. In particular the evaluation of both thrust correction factors and the estimation of the mass flow entering the test cell were at the core of the research. The project has been fully sponsored by Rolls-Royce pIc. Initially, their principal objective was to assess the relevance and accuracy of CFD when applied to thrust measurement inside indoor test beds with an intended outcome of minimising the use of expensive experimental measurements. The
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Shearer, Joanne Lesley. "Phospholipase C signalling pathways during the first cell cycle of the sea urchin embryo." Thesis, University of Newcastle Upon Tyne, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.297530.

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Hua, Hong N. "Studies on cell proliferation in the olfactory organ of the larval sea lamprey, Petromyzon marinus." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape10/PQDD_0009/MQ52573.pdf.

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48

Müller, Ivan. "Sistemas instrumentados portáteis : esferas instrumentadas para sensoriamento de forças em três dimensões." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2008. http://hdl.handle.net/10183/15836.

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Neste trabalho foram desenvolvidos sistemas de aquisição portáteis de formato esférico, capazes de sensoriar forças de compressão e impacto ao longo dos três eixos cartesianos. Os instrumentos desenvolvidos foram utilizados em diferentes experimentos feitos em estabelecimentos de beneficiamento de frutas (packinghouses) durante o processo de pós-colheita a fim de verificar os danos mecânicos sofridos pelas mesmas. Os instrumentos são sistemas microcontrolados compostos por quarto sensores (acelerômetros, célula de carga, temperatura e umidade), memória Flash para o armazenamento dos dados, tra
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Schanke, Nicole Lyn. "Photoprotective response of the sea ice diatom Fragilariopsis cylindrus to ultraviolet-B radiation under elevated temperature and light exposure." Thesis, College of Charleston, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=1587032.

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<p>The destruction of the ozone layer, concomitant with a projected enhancement in ocean stratification, will increase the dosage of ultraviolet radiation (UVR), as well as sea surface temperature and incident light level. The diatom <i> Fragilariopsis cylindrus</i> and other Antarctic phytoplankton will therefore be exposed to, and require protection from, increasing levels of damaging UVR, under elevated temperatures and light conditions. It has been hypothesized that phytoplankton utilize photoprotective pigments and the production of mycosporine-like amino acids as strategies against UVB-i
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Stoll, Joshua D. "Graphene Membranes as Electron Transparent Windows for Environmental Spectroscopy and Microscopy." OpenSIUC, 2012. https://opensiuc.lib.siu.edu/theses/917.

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A methodology was developed for isolation and transfer of 1-4 monolayer graphene from both Cu and Ni foil and Ni/SiO2/Si layered substrate types for use as electron transparent windows in environmental electron microscopy and spectroscopy. The graphene membranes were transferred onto disc "frames" made of stainless steel containing 3-10 μm diameter apertures. Such frames "windowed" with the graphene membrane are assembled into the custom designed environmental cell (e-cell) which contain a specimen immersed in the desired liquid or gaseous environment, and are compatible for imaging with a con
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