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Dissertations / Theses on the topic 'Endplate'

Author: Grafiati

Published: 4 June 2021

Last updated: 19 February 2022

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1

Hu, Ying. "Robustness of flexible endplate connections under fire conditions." Thesis, University of Sheffield, 2010. http://etheses.whiterose.ac.uk/14969/.

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Worldwide interest in how to prevent the progressive collapse for tall and large buildings under exceptional loading conditions was heightened by the collapse of the twin towers at the World Trade. The performance of steel-framed structures subjected to fire loading is heavily reliant on the interaction between structural members such as columns, slabs and beams. The implicit assumption in fire engineering design is that bolted connections are able to maintain the structural integrity for a large and tall building under fire conditions. Unfortunately, evidence from the collapse of the World Tr

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2

ZHOU, FENGFENG. "MODEL-BASED SIMULATION OF STEEL FRAMES WITH ENDPLATE CONNECTIONS." University of Cincinnati / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1119316578.

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3

Pokharel, Rajib. "Structural Optimization of Offset Derrick Structure and Channel Endplate Connections Study." Thesis, University of Louisiana at Lafayette, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10002396.

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<p> This study is intended to focus on the optimization of offset derrick structures and to present a novel connection details for derrick structures. The overall goal of this study is to improve performance, ease fabrication, and reduce material and labor costs associated with derrick structures, and study the performances of Double Channel Endplate and Single Channel Endplate Connections using Finite Element Method (FEM) analysis. </p><p> Optimization of derrick structure is carried out by modeling different bracing systems with different parameters of design, for example, vertical panel h

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4

Zehra, Uruj. "Changes in the endplate and their relationship to intervertebral disc degeneration." Thesis, University of Bristol, 2015. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.685354.

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Low back pain represents a significant financial burden to society. The major costs are associated with chronic back pain which often arises as a result of intervertebral disc degeneration. Discs lie between the vertebrae and are separated fi'om them by a cartilaginous and bony endplate. The endplate is vital for intervertebral disc health because of its role in load-transfer and disc nutrition. Consequently, changes to the endplate due to ageing or injury may adversely affect the disc and contribute to varying forms of degeneration.

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5

Mok, Pik-sze, and 莫碧詩. "Lumbar endplate and modic changes, epidemiology, determinants and pain profiles in southern Chinese." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2014. http://hdl.handle.net/10722/206737.

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Intervertebral disc(IVD) degeneration is associated with low back pain (LBP).Despite the endplates are located adjacent to the IVD, the phenotypes of endplate and vertebral bone marrow changes remain unclear. The objective of this study is to assess the prevalence and the associated determinants of these phenotypes of the lumbar spine. 2449 Southern Chinese subjects (aged 10 –88 years) undergone sagittal T2-weighted magnetic resonance imaging (MRI)examination to assess the presence of endplate and vertebral bone marrow changes including Schmorl’s nodes (SN) and Modic changes (MC),respective

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6

LIMA, LUCIANO RODRIGUES ORNELAS DE. "BEHAVIOUR OF STRUCTURAL STEEL ENDPLATE JOINTS SUBJECTED TO BENDING MOMENT AND AXIAL FORCE." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2003. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=4165@1.

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CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO<br>Tradicionalmente, o projeto de pórticos em estruturas de aço assume que as ligações viga-coluna são rígidas ou flexíveis. As ligações rígidas, onde não ocorre nenhuma rotação entre os membros conectados, transferem não só momento fletor, mas também força cortante e força normal. Por outro lado, as ligações flexíveis são caracterizadas pela liberdade de rotação entre os membros conectados impedindo a transmissão de momento fletor. Desconsiderando- se estes fatos, sabe-se que a grande maioria das ligações não possuem este co

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7

Wang, Zhiyu. "Hysteretic response of an innovative blind bolted endplate connection to concrete filled tubular columns." Thesis, University of Nottingham, 2012. http://eprints.nottingham.ac.uk/14489/.

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Concrete filled steel tubular (CFT) columns can employ the advantages of both materials: steel and concrete. Connection to such columns, however, is problematic. This is especially so if the required connection is both bolted and moment-resisting. To address this issue, a novel blind-bolted and moment-resisting connection to CFT column has been developed. This connection uses an innovative blind-bolt, introduced in previous research at the University of Nottingham and is termed the Extended Hollobolt (EHB). The EHB has been developed to provide sufficient tensile resistance and stiffness for t

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8

Jones, S. V. P. "The characteristics of endplate ion channel block produced by disopyramide and two erythrina alkaloids." Thesis, University of Strathclyde, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.372105.

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9

Czamanski, Jessica. "The Differences Between the Energy Metabolism of the Annulus Fibrosus and the Nucleus Pulposus Cells of the Intervertebral Disc." Scholarly Repository, 2010. http://scholarlyrepository.miami.edu/oa_theses/49.

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Back pain is one of the most common physical conditions in the United States, for which approximately 15% of the population will visit a doctor every year. The most common type of back pain is low back pain (LBP) and millions of dollars are spent every year healthcare are a due to LBP. Although poorly understood, low back pain has been associated to interveterbral disc (IVD) degeneration. The IVD is an important structure that helps maintaining normal skeletal support. It is composed of three different tissues called the annulus fibrosus (AF), and the nucleus pulposus (NP), attached to a carti

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10

Gosling, Niki. "Development and analysis of apatite-mullite glass-ceramic scaffolds : towards tissue engineering of the vertebral endplate." Thesis, University of York, 2014. http://etheses.whiterose.ac.uk/5960/.

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Calcification of the vertebral endplate (EP) is a key factor relating to the onset of degenerative disc disease, a primary influencer of lower back pain which carries substantial social and economic burden. The aim of the current project was to investigate the feasibility of using apatite-mullite glass ceramic (AM-GC) to provide a bioactive scaffold for tissue engineering applications in the region of the vertebral EP. Consequently this material was fully characterised with regard to the natural tissues from a number of functional perspectives, mechanical, compositional, biological and those f

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11

O'Connor, Mark Anthony. "The prediction of moment-rotation curves of extended endplate connections for use in semi-rigid analysis of steel frameworks." Thesis, City University London, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.304590.

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12

知紀, 山口, and Tomonori Yamaguchi. "Microstructural analysis of three-dimensional canal network in the rabbit lumbar vertebral endplate using high-resolution micro-computed tomography." Thesis, https://doors.doshisha.ac.jp/opac/opac_link/bibid/BB12908294/?lang=0, 2014. https://doors.doshisha.ac.jp/opac/opac_link/bibid/BB12908294/?lang=0.

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椎間板変性を引き起こす要因として、骨性終板内の栄養管狭小および軟骨終板の石灰化による椎間板への栄養供給の低下が推察されているが、椎体終板内栄養管の3次元微細構造は未だ明確にされていない。本論文は高解像度マイクロCTを用いて家兎腰椎骨性終板内栄養管の3次元微細構造を明らかにする事を目的とし、各栄養管の長さ,直径,配向及び表面からの深さを定量的に解析することでその多層構造を定量的に評価することができた。<br>Insufficient nutrient supply through vertebral canal structures to the intervertebral disc (IVD) has been considered as an important contributor for disc degeneration. In spite of this, three-dimensional (3D) topology inside the vertebral endplate remains poorly understood. This study aims to characterize the 3D canal structure in the rabbit lumbar vertebral endplate using micro computed tomo

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13

De, Beer Neal. "Development of a process chain for digital design and manufacture of patient-specific intervertebral disc implants with matching endplate geometries." Thesis, Stellenbosch : University of Stellenbosch, 2011. http://hdl.handle.net/10019.1/6564.

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Thesis (PhD (Industrial Engineering))--University of Stellenbosch, 2011.<br>ENGLISH ABSTRACT: Back pain is a common concern amongst a growing population of people across the world today, where in most cases the pain can become unbearable resulting in major lifestyle adjustments. Seventy to eighty percent of the population of the Western world experiences low-back pain at one time or another. Pain can be produced as a worn disc becomes thin, narrowing the space between the vertebrae. Pieces of the damaged disc may also break off and cause irritation to the nerves signalling back pain.

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14

Lakstins, Katherine S. "Investigating the human cartilage endplate in chronic low back pain: from mechanisms of degeneration to molecular, cell and tissue level characterization." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1584627459584403.

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15

Pang, Toh Yen, and tohyen_pang@yahoo com. "The transmission of vibration at the lower lumbar spine due to whole-body vibration: a numerical human model study." RMIT University. Aerospace Mechanical and Manufacturing Engineering, 2006. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20060825.160144.

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Lower back disorders due to whole-body vibration (WBV) are the most common injuries reported by professional drivers. Such injuries often have long-term complications leading to significant personal and societal costs. An improved mathematical model of the whole human body would contribute to a better understanding of the mechanisms of lower back injury and be valuable in injury prevention research. Current biodynamic human models reported in the literature lack detailed information for predicting the non-linearity due to vibration amplitude of transmission of vibration from seat to a h

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16

Musarella, Magali. "Physiopathologie de la jonction neuromusculaire : étude de la souris med(motor endplate disease), un mutant pour le canal sodium potentiel-dépendant de type Nav1.6." Aix-Marseille 2, 2008. http://www.theses.fr/2008AIX20672.

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Les souris med (motor endplate disease) sont des mutants dépourvus du canal sodium potentiel-dépendant de type Nav1. 6 qui est le type majoritaire exprimé aux nœuds de Ranvier (NdR) des axones myélinisés du SNC et du SNP. Les mutants med présentent une paralysie musculaire progressive à partir du 10ème jour de vie postnatale (P10) aboutissant à la mort à la fin de la 3ème semaine. La conduction axonale le long des nerfs périphériques est normale, cependant une stimulation de ces derniers est incapable d’induire une contraction musculaire. A la jonction neuromusculaire (JNM), l’exocytose des ne

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17

Law, Tsz-kwun, and 羅子冠. "Ultrashort time-to-echo MRI of the cartilaginous endplate and relationship to disc degeneration and Schmorl's nodes, andretrospective study of paediatric spines and the neurocentralsynchondrosis." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2011. http://hub.hku.hk/bib/B47869987.

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Background: An association between cartilaginous endplate (CEP) defects and intervertebral disc (IVD) degeneration has been previously suggested in animal and cadaveric studies. CEP defects may also be involved in Schmorl’s nodes (SN). There have been no previous reports in the literature that describe the use of ultrashort time-to-echo (UTE) MRI to assess the CEP in humans in vivo. In chapter 5 of this thesis, a retrospective study of paediatric spines and the neurocentral synchondrosis (NCS) was singled out to report the incidence of NCS and to raise the hypothesis of NCS as a precur

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18

Gallagher, Sean. "Effects of torso flexion on fatigue failure of the human lumbosacral spine." Connect to this title online, 2003. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1070310033.

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Thesis (Ph. D.)--Ohio State University, 2003.<br>Title from first page of PDF file. Document formatted into pages; contains xvii, 238 p.; also includes graphics (some col.). Includes abstract and vita. Advisor: William S. Marras, Dept. of Industrial and Systems Engineering. Includes bibliographical references (p. 204-238).

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19

Carlsson, Lena. "The muscle cytoskeleton of mice and men : Structural remodelling in desmin myopathies." Doctoral thesis, Umeå universitet, Anatomi, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-83451.

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The muscle fibre cytoskeleton of skeletal and heart muscle cells is composed mainly of intermediate filaments (IFs), that surround the myofibrils and connect the peripheral myofibrils with the sarcolemma and the nuclear membrane. Desmin is the first muscle specific IF protein to be produced in developing muscles and is the main IF protein in mature muscles. In skeletal muscle, desmin is particularly abundant at myotendinous and neuromuscular junctions. In the heart an increased amount of desmin is found at intercalated discs and in Purkinje fibres of the conduction system. Interactions between

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20

Pereira, Francisco Carlos. "Estudo experimental e quantitativo da reinervação muscular após regeneração de nervos no interior de próteses tubulares." Universidade de São Paulo, 1993. http://www.teses.usp.br/teses/disponiveis/42/42131/tde-16052012-152634/.

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Objetivamos o estudo quantitativo e temporal do padrão de inervação do músculo extensor longo dos dedos (edl), após transecção do nervo ciático em camundongos e reparo imediato pela técnica de tubulização. Assim, o músculo edl apresentou-se desnervado na segunda semana após a tubulização. Todas as fibras musculares do edl estavam reinervados na sexta semana após o implante da protese tubular. Entre a sexta e a quadragesima semanas pós-implante a proporção de fibras musculares do edl com mono e poli-inervação aumentou de 3:1 para 4:1. Na quadragésima semana após o implante do tubo foi atingida

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21

Cheng, Hong. "Quantal Mechanisms Underlying Stimulation-induced Augmentation and Potentiation." Digital Commons @ East Tennessee State University, 1998. https://dc.etsu.edu/etd/2893.

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Repetitive stimulation of motor nerves causes an increase in the number of packets of transmitter ("quanta") that can be released in the ensuing period. This represents a type of conditioning, in which synaptic transmission may be enhanced by prior activity. Despite many studies of this phenomenon, there have been no investigations of the quantal mechanisms underlying these events, due to the rapid changes in transmitter output and the short time periods involved. To examine this problem, a method was developed in which estimates of the quantal release parameters could be obtai

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22

Park, Ashley Yuuki. "Semi-rigid joints to tubular columns and their use in semi-continuous frame design." Thesis, University of Manchester, 2012. https://www.research.manchester.ac.uk/portal/en/theses/semirigid-joints-to-tubular-columns-and-their-use-in-semicontinuous-frame-design(5214b6d8-7df6-4197-bbcd-d4d92b8330df).html.

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Traditionally, joints are assumed to be either pinned or fully rigid, but in reality, many behave between these two extremes giving them a semi-rigid classification. By acknowledging the semi-rigidity of nominal pin joints, steel frames can be designed as semi-continuous in which the beam bending moments are partially transmitted to the column members and the need for lateral bracing is eliminated, thus reducing material and construction costs. This thesis presents the results of numerical and theoretical studies of the behaviour of bolted endplate connections to Rectangular Hollow Section (RH

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23

Innes, Fraser. "An experimental investigation into the use of vortex generators to improve the performance of a high lift system." Thesis, City University London, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.307878.

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24

Kwan, Man Kim. "Numerical studies of steady flows past a circular cylinder bounded with endplates /." View Abstract or Full-Text, 2003. http://library.ust.hk/cgi/db/thesis.pl?MECH%202003%20KWAN.

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Thesis (Ph. D.)--Hong Kong University of Science and Technology, 2003.<br>Includes bibliographical references (leaves 138-144). Also available in electronic version. Access restricted to campus users.

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Peng, Xiaoxing. "Experiments on oscillating flows past a circular cylinder bounded by two parallel endplates /." View abstract or full-text, 2004. http://library.ust.hk/cgi/db/thesis.pl?MECH%202004%20PENG.

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26

Prengel, Patricia. "Vergleichende Untersuchung der Mineralisierungs- und Festigkeitsverteilung in den thorakalen Endplatten." Diss., lmu, 2012. http://nbn-resolving.de/urn:nbn:de:bvb:19-142424.

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27

Wieser, Christoph. "Mineralisierungsverteilung in den lumbalen Endplatten bei Gesunden, Patienten mit Osteochondrose und mit Bandscheibenprothese." Diss., lmu, 2007. http://nbn-resolving.de/urn:nbn:de:bvb:19-64483.

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28

Weisser, Stefan. "Darstellung der Mineralisierungsverteilung in den Endplatten der Wirbelkörper zur Analyse des Kraftflusses in der Wirbelsäule." Diss., lmu, 2007. http://nbn-resolving.de/urn:nbn:de:bvb:19-63914.

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29

Prengel, Patricia [Verfasser], and Magdalena [Akademischer Betreuer] Müller-Gerbl. "Vergleichende Untersuchung der Mineralisierungs- und Festigkeitsverteilung in den thorakalen Endplatten / Patricia Prengel. Betreuer: Magdalena Müller-Gerbl." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2012. http://d-nb.info/1022318942/34.

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30

Kuttner, Martin. "Asymmetrien der Wirbel und des Mineralisierungsverhaltens an den Facettengelenken und Endplatten bei strukturellen Skoliosen - morphologische und funktionelle Befunde." Diss., lmu, 2005. http://nbn-resolving.de/urn:nbn:de:bvb:19-39196.

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31

Kerscher, Susanne Regina [Verfasser], Rudolf [Gutachter] Martini, and Anna-Leena [Gutachter] Sirén. "Die Rolle von Makrophagen an der motorischen Endplatte bei der Pathogenese neuromuskulärer Erkrankungen am Beispiel von Tiermodellen peripherer Neuropathien vom Charcot-Marie-Tooth-Typ / Susanne Regina Kerscher ; Gutachter: Rudolf Martini, Anna-Leena Sirén." Würzburg : Universität Würzburg, 2018. http://d-nb.info/1171706014/34.

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32

Schmidt, Manuela. "Characterization of synaptic protein complexes in Drosophila melanogaster." Doctoral thesis, [S.l.] : [s.n.], 2006. http://webdoc.sub.gwdg.de/diss/2006/schmidt.

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Zinsser-Krys, Jillena [Verfasser], Jürgen [Akademischer Betreuer] Wörl, and Jürgen [Gutachter] Wörl. "Die immunhistochemische Bestimmung der Co-Lokalisation von Neurotransmittern und -peptiden in Serotonin-positiven enterischen Nervenfasern an motorischen Endplatten im Mäuseösophagus / Jillena Zinsser-Krys ; Gutachter: Jürgen Wörl ; Betreuer: Jürgen Wörl." Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2018. http://d-nb.info/1156780918/34.

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34

Ernst, Philipp [Verfasser], Orlando [Akademischer Betreuer] Guntinas-Lichius, Hubertus [Akademischer Betreuer] Axer, and Doychin [Akademischer Betreuer] Angelov. "Stereologische Analyse von Mikroglia und afferenten Terminalen im Facialiskerngebiet nach facio-facialer Anastomose bei der Ratte und Korrelation polyinnervierter Endplatten mit der Vibrissenbewegung / Philipp Ernst. Gutachter: Orlando Guntinas-Lichius ; Hubertus Axer ; Doychin Angelov." Jena : Thüringer Universitäts- und Landesbibliothek Jena, 2015. http://d-nb.info/1066238642/34.

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Ernst, Philipp [Verfasser], Orlando Akademischer Betreuer] Guntinas-Lichius, Hubertus [Akademischer Betreuer] [Axer, and Doychin [Akademischer Betreuer] Angelov. "Stereologische Analyse von Mikroglia und afferenten Terminalen im Facialiskerngebiet nach facio-facialer Anastomose bei der Ratte und Korrelation polyinnervierter Endplatten mit der Vibrissenbewegung / Philipp Ernst. Gutachter: Orlando Guntinas-Lichius ; Hubertus Axer ; Doychin Angelov." Jena : Thüringer Universitäts- und Landesbibliothek Jena, 2015. http://nbn-resolving.de/urn:nbn:de:gbv:27-20150122-084037-1.

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Woldeyesus, Masresha Tsegaye. "Genetische Analyse des Tyrosinkinase-Rezeptors ErbB2." Doctoral thesis, [S.l.] : [s.n.], 2001. http://deposit.ddb.de/cgi-bin/dokserv?idn=96777649X.

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37

Adegoke, Israel Oludotun. "Ductility of thin extended endplate connections." Thesis, 2010. http://hdl.handle.net/10539/7708.

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A model of the extended endplate behaviour has been developed in this thesis, which allows the prediction of the endplate contribution to the connection rotation in terms of the connection strength (moment capacity) and ductility (rotation capacity). The extended endplate strength model developed in this thesis is unique in that it addresses the possibility of strain hardening and membrane action in the endplate. These phenomena are shown to be critical for the ductility and strength of thin endplates, but they have not previously been modelled by other researchers. Because the leading models

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38

Huamg, Yu-Why, and 黃榆淮. "Investigation of Endplate propeller for outboard engine." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/bvh8f2.

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碩士<br>國立臺灣海洋大學<br>系統工程暨造船學系<br>107<br>In this project , CFD(Computational Fluid Dynamics) is used to investigate the feasibility of ENDP(Endplate propeller) applied to outboard engine .A three-blade traditional propeller with New section foil、a four-blade traditional propeller with KCA foil、a three-blade Endplate Propeller with New Section foil and a three-blade Endplate Propeller with Newton-Rader foil are investigated. These propellers have been calculated at the design conditions by CFD with SST k-ω model(high Reynolds number in uniform inflow) .Based on the results of sea trial and the pr

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Xu, Huan-Jia, and 許桓嘉. "On the development and verification of diffused endplate propeller." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/h4qnh5.

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博士<br>國立臺灣海洋大學<br>系統工程暨造船學系<br>107<br>The sheet cavitation can easily be found on the outer surface of the endplate of the Contracted loaded tip propeller propeller(CLT), especially when the CLT propeller operates with inclined shaft angles. The results of experiment and CFD (Computational Fluid dynamic) show that the high pressure at the pressure side of the propeller near the endplate will obstruct the inflow flowing into the blade, and force the inflow flowing toward the outside of the endplate. The phenomenon will increase the attack angle of the inflow for the endplate, and the attack ang

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Hsu, Sheng-Te, and 許聖德. "Experimental investigation on the endplate propeller for high-speed craft." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/17859492634451945260.

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碩士<br>國立臺灣海洋大學<br>系統工程暨造船學系<br>101<br>The influence on the performance of high-speed endplate propeller (ENDP) with different expanded area ratios, angles of attack on the endplate and tip loadings was investigated in this paper. Two 4-bladed ENDP propellers were thus designed, one with an EAR of 0.78 and another with 0.80. Each propeller also includes geometrical variation with a negative angle of attack, at -1.0° and -1.3° respectively on the endplate, followed by pitch ratio, camber ratio, and span width of the endplate. Two propellers were tested at the National Taiwan Ocean University’s (

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Lin, Meng-Hsien, and 林孟嫻. "On the application of endplate propeller on different kind of ships." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/01551439547525849338.

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碩士<br>國立臺灣海洋大學<br>系統工程暨造船學系<br>100<br>Three 4-blades with negative angle of attack of the end-plate ENDP (endplate) propellers will be investigated in the thesis. First propeller has 0.70 EAR with cup and the angle of attack of the end-plate equal to -0.3°, and the second propeller is modified from the first one with smaller cup at the tip. The open water tests of two propellers are carried out in NTOU medium-sized cavitation tunnel for different cavitation numbers at inclined shaft 8° and 10°. Whether the ENDP propeller with cup can improve the bubble cavitations and increase the efficiency,

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Chen, Ting-Chuan, and 陳丁銓. "The Design of the PEMFC’s Endplate and the Investigation of Correlative Performance." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/60802246353004700071.

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碩士<br>臺灣大學<br>機械工程學研究所<br>95<br>The electrical resistance in PEMFC will reduce the performance of the fuel cell stack. The electrical resistance includes the bulk resistance of the components and the contact resistance between the components, the latter has larger influence on the performance of the fuel cell than the former. 　　The contact resistance is mainly determined by the clamping pressure. In this paper, we first investigate the relation between the clamping pressure and the contact resistance, then we use some kind of functions to represent the relation. According to the relation, we c

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Labrom, Robert David. "The effect of cage positioning on lumbrosacral vertebral endplate failure in compression." Thesis, 2002. http://hdl.handle.net/2429/12810.

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Anterior column cage or graft subsidence remains a biomechanically and clinically serious problem that affects the performance and patient outcome of any spinal arthrodesis surgery. To assess the best position to place an interbody fusion cage, a posterior interbody fusion construct was simulated. Specifically, the hypothesis to be tested was that two smaller, posterolaterally positioned interbody cages would provide superior construct stiffness and strength in compression. Nine human cadaver spine specimens from L3-S1 were dissected and continuously posteriorly instrumented with pedic

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Bailey, Christopher Stewart. "Local strength and regional bone mineral density profiles of the thoracolumbar endplate." Thesis, 2003. http://hdl.handle.net/2429/14254.

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1.1 Purpose 1. To determine the strength profile of the thoracolumbar endplates using indentation testing. 2. To determine the regional bone mineral density (rBMD) profile of the thoracolumbar endplates using peripheral quantitative computed tomography (pQCT). 3. To compare the thoracolumbar endplate strength profile with the rBMD profile. 1.2 Method Indentation tests using a materials testing machine and axial pQCT were performed on the T9, T12, and L2 endplates of seven fresh-frozen human cadaver spines. A minimum of twenty-five indentations was performed in a rectangular grid (7 co

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Chen, Szusien, and 陳思顯. "Effect of Region and Genipin on Bi-directional Hydrostatic Pressure Resistance of Healthy Vertebral Endplate." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/38630108412932507135.

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碩士<br>國立臺灣大學<br>醫學工程學研究所<br>96<br>Objectives. To investigate the effect of regional variation, nucleus material and genipin immersion on the bi-directional fluid flow resistance of healthy vertebral endplate. Summary of Background Data. The exchange of nutrients and wastes for metabolic process in the intervertebral disc can occur via fluid convection through the endplate. The fluid flow can be driven by pressure gradient between the vertebra and the intervertebral disc. However, the factors that influence the resistance of fluid flow of endplate have not been well studied yet. Methods. 125

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中田, 智彦, and Tomohiko Nakata. "Mutations in the C-Terminal Domain of ColQ in Endplate Acetylcholinesterase Deficiency Compromise ColQ－MuSK Interaction." Thesis, 2013. http://hdl.handle.net/2237/19064.

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Nosikova, Yaroslavna. "Characterization of the Interface between the Annulus Fibrosus and the Vertebral Bone." Thesis, 2011. http://hdl.handle.net/1807/31370.

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Replacing a diseased disc with a tissue engineered disc has the potential to restore normal spinal biomechanics. However, recreating the interface between annulus fibrosus (AF) and vertebral bone (VB) will be necessary to facilitate proper function of the implant in vivo. This study characterizes the native bovine AF-VB interface and assesses adult human discs. The AF insertion site in humans and cows is uniquely differentiated from other soft tissue-bone interfaces, as AF collagen fibers anchor into the calcified region of vertebral endplate through a zone of hyaline cartilage and have a diff

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Fu, F., Dennis Lam, and J. Ye. "Modelling semi-rigid composite joints with precast hollowcore slabs in hogging moment region." 2008. http://hdl.handle.net/10454/5888.

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In this paper, using the general purpose software ABAQUS, a three dimensional (3-D) finite element model was built to simulate semi-rigid composite connection with precast hollowcore slabs. 3D continuum elements are used for all parts of the composite connections and the contact conditions between all the components are explicitly modelled. The model also incorporates nonlinear material characteristics and non-linear geometric behaviour. A simplified method to simulate the bolted end plate connection is introduced and validated. The proposed simulation method of the longitudinal shear transmis

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Jackman, Timothy M. "Prediction of vertebral fractures under axial compression and anterior flexion." Thesis, 2015. https://hdl.handle.net/2144/16086.

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Vertebral fractures affect at least 12-20% of men and women over the age of 50, and the risk of fracture increases exponentially with age. Despite their high prevalence, the failure mechanisms leading to these fractures are not well understood. For example, clinical observations of fractured vertebra often note that one or both vertebral endplates have collapsed, but the precise involvement of the endplates in the initiation and progression of failure has not yet been defined. The mechanisms of failure may also relate to spatial variations in the density and microstructure of the porous trabec

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Castells, Navarro Laura, and Jo Buckberry. "Back to the beginning: identifying lesions of diffuse idiopathic skeletal hyperostosis before vertebral ankylosis." 2019. http://hdl.handle.net/10454/17581.

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Yes<br>Objective: To better understand the pathogenesis of DISH, identifying early or pre-DISH lesions in the spine and investigating the relationship between spinal and extra-spinal manifestations of DISH. Material: 44 skeletonized individuals with DISH from the WM Bass Donated Skeletal Collection. Methods: For each vertebra, location, extension, point of origin and appearance of vertebral outgrowths were recorded. The size of the enthesophytes at the olecranon process, patella and calcaneal tuberosity was measured with digital callipers. Results: At either end of the DISH-ankylosed

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