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Dissertations / Theses on the topic 'Lead vessels'

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1

Bagshaw, Nick. "A study of leak rates through narrow cracks." Thesis, University of Sheffield, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.366150.

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2

Milososka, Katarina, and Louise Nylander. "Value Stream Mapping of GKN Aerospace Applied Composites production of pressure vessels and radomes." Thesis, Linköpings universitet, Kommunikations- och transportsystem, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-119939.

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Examensarbete är utfört på GKN Aerospace Applied Composites (ACAB) där produktionsflödet för fyra produkter har kartlagts. Idag upplever företaget svårigheter med att hålla leveranstiden för dessa produkter, dessutom upplevs verkstäderna som ostrukturerade. GKN Aerospace Applied Composites tillverkar idag flertalet produkter i komposit till både den civila och militära marknaden. För detta examensarbete har flödet av tre stycken radomer och en storlek av tryckkärl kartlagts. Tryckkärl är en produkt som tillverkas i större volymer och har ett flödesorganiserat produktionsupplägg. Radomerna är k
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3

Takahashi, Sayaka. "Relationship between vessel formation and leaf phenology in temperate broad-leaved trees." Kyoto University, 2015. http://hdl.handle.net/2433/199351.

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Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(農学)<br>甲第19027号<br>農博第2105号<br>新制||農||1030(附属図書館)<br>学位論文||H27||N4909(農学部図書室)<br>31978<br>京都大学大学院農学研究科森林科学専攻<br>(主査)教授 大澤 晃, 教授 髙部 圭司, 教授 北島 薫<br>学位規則第4条第1項該当
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4

Buongiorno, Jacopo 1971. "Conceptual design of a lead-bismuth cooled fast reactor with in-vessel direct-contact steam generation." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/32205.

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Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Nuclear Engineering, 2001.<br>Includes bibliographical references (p. 357-366).<br>The feasibility of a lead-bismuth (Pb-Bi) cooled fast reactor that eliminates the need for steam generators and coolant pumps was explored. The working steam is generated by direct contact vaporization of water and liquid metal in the chimney above the core and then is sent to the turbine. The presence of a lighter fluid in the chimney drives the natural circulation of the Pb- Bi within the reactor pool. Three key technical issues were addressed: 1)
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5

Bondok, Ali. "Misfire of spark ignited lean mixture of propane-air in a constant volume vessel." Thesis, University of Ottawa (Canada), 1993. http://hdl.handle.net/10393/6580.

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Misfire occurs when operating an internal combustion engine with air fuel ratio near the lean limit. To extend the misfire limit, the combustion chamber is redesigned to promote turbulence and swirl. An experimental study has been conducted in a constant volume vessel to investigate the effects of the swirling flow, the spark location, the spark energy, the spark gap and the equivalence ratio on misfire. The relationship between spark location and misfire is investigated for the three following ignition locations: quarter radius from the wall, half radius from the wall and three quarter radius
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6

Tulyananda, Tatpong. "Vegetative Anatomy of Rhododendron with a Focus on a Comparison between Temperate and Tropical Species." Diss., Virginia Tech, 2016. http://hdl.handle.net/10919/82508.

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Rhododendron is a monophyletic group that inhabits many different climates. One clearly defined diversification was from temperate ancestors into tropical habitats. The focus of this work was to explore leaf and stem anatomical traits in relation to habitat (temperate and tropical) and elevation of the native range. A closely-related group of Rhododendron was selected to reduce variation in genetic history and reveal environment–associated adaptive traits. Vessel anatomical traits of Rhododendron accessions were assayed for the trade of between safety (protection against catastrophic fail
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7

Lechthaler, Silvia. "The hydraulic architecture of the plants: study of the allometric relations in stem and leaves." Doctoral thesis, Università degli studi di Padova, 2019. http://hdl.handle.net/11577/3426838.

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The xylem in plants is formed by interconnected dead cells that allow the flow of water from the roots to the leaves. The ascent of sap is mainly passive and it is driven by water evaporation from the mesophyll cell walls in the leaf. The water evaporation generates capillary suction on the menisci at the micro-porous of cell walls, causing negative hydrostatic pressure that propagates down the water column in the xylem. Due to plants grow in height the length of the hydraulic path increases progressively posing the question whether the hydraulic resistance increases accordingly. There is evid
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8

Pavan, Andre Mauricio. "Detecção on-line de vazamentos em vasos de pressão utilizando sistemas sonicos." [s.n.], 2005. http://repositorio.unicamp.br/jspui/handle/REPOSIP/267531.

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Orientadores: Sandra Lucia Cruz, João Alexandre Ferreira da Rocha Pereira<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Quimica<br>Made available in DSpace on 2018-08-07T19:03:10Z (GMT). No. of bitstreams: 1 Pavan_AndreMauricio_M.pdf: 4399374 bytes, checksum: d76e0e55472d41a43569b1e700a1a749 (MD5) Previous issue date: 2005<br>Resumo: Vasos de pressão são equipamentos muito importantes numa indústria, sendo responsáveis por armazenar gases, líquidos e outros fluidos a altas pressões. Um pequeno vazamento nesses vasos pode ser muito perigoso, gerando po
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9

Bourga, Renaud. "The mechanism of leak-before-break fracture and its application in engineering critical assessment." Thesis, Brunel University, 2017. http://bura.brunel.ac.uk/handle/2438/15289.

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This thesis investigated the different aspects and mechanisms of leak-before-break (LBB) assessment. The main objective was to improve the understanding of the transition between surface and through wall defects. While existing procedures generally idealise the through-wall crack into a rectangular shape, in reality a crack propagates with a shape depending on the loading. Comparison between the related solutions from established procedures have been undertaken. The apparent variation depending on the solutions used in the assessment has been highlighted. Two different methodologies have been
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10

Karlsson, Sundqvist Therese, and Karin Källmar. "Integration of Environmental Aspects in Product Development Process and Ship Design : a LEAP towards environmental awareness at Kockums AB." Thesis, Linköpings universitet, Industriell Produktion, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-80969.

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The Swedish company Kockums AB, at the forefront within maritime and naval technology, is in need of a tool, document, and/or method to include environmental aspects in their product development process. This is mainly because of additional requirements put on Kockums AB from their main customer. Ship recycling is the major issue that has to be addressed and included in Kockums AB’sworking procedures. Moreover, ship recycling is a pressing issue to handle due to horrible conditions in South Asian countries, where most ship dismantling is taking place. For these reasons, the objective of this M
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11

Laeuffer, Hortense. "Caractérisation et modélisation des réseaux de fissures pour la prédiction de la perméabilité des réservoirs composites stratifiés sans liner." Thesis, Paris, ENSAM, 2017. http://www.theses.fr/2017ENAM0044/document.

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La conception de réservoirs composites sans liner pour les lanceurs spatiaux nécessite d’étudier la relation entre endommagement et perméabilité dans les matériaux composites stratifiés pour proposer des solutions répondant à la fois aux critères fonctionnels de résistance et de taux de fuite. L’objectif de cette étude est de fournir une description pertinente de l’évolution de l’endommagement à l’échelle mésoscopique (i.e. à l’échelle du pli) et des réseaux de fissures en résultant afin de prédire l’apparition de fuites à travers les composites stratifiés. Pour ce faire, la démarche mise en œ
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12

Lysák, Karel. "Detekce akutní ischemie v EKG signálu pomocí specifických svodů." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2016. http://www.nusl.cz/ntk/nusl-242124.

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This master’s thesis deals with methods for detection of myocardial ischemia in the ECG signal. There is explained the principle of spreading of electrical activity through the heart muscle and its manifestations on the ECG. There are also mentioned the causes of myocardial ischemia and various methods of its detection in the ECG signal. In great detail there is explained the process of implementation of the two selected detection methods of myocardial ischemia in MATLAB. These methods are tested on the data from The PTB Diagnostic ECG Database. Finally, there is the presentation of detection
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13

Chang, Po-Yuan, and 張柏元. "The Use of Infrared LED for the Detection of Blood Vessels Photoplethysmography and Blood Vessels Spring Constants." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/gnuy42.

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14

Austin, Kelly Denise. "The influence of context on the handmade ceramic vessel: A practice-led investigation into the potential of wheel-thrown vessels within the restaurant and art gallery environments." Master's thesis, 2016. http://hdl.handle.net/1885/107640.

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My research explores the influence of context on the interpretation and artistic potential of the hand made ceramic vessel. My process has involved making a variety of objects and reflecting upon them within the context of two specific environments: the restaurant and the art gallery. Working in collaboration with two restaurants in Canberra, I explored the relationship between the Slow Movement and contemporary hand made ceramics. Making work for the art gallery context, I sought to challenge the traditional concepts of ʻfunctio
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15

Chiu, Hung-Che, and 邱宏哲. "Model analysis and Experiment Validation of the flow rate from vessel leak." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/33286413143588524195.

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碩士<br>國立高雄第一科技大學<br>環境與安全衛生工程研究所<br>103<br>In the present study, a tank leak module was used to study the flow rate from a leak in a container and used to validate the leak flow model. For a fixed leak hole, the tests comprised of a pressurized leak, leak from a connecting tube or stub. The flow rate was calculated from the variation of liquid level with time. The discharge coefficient was then calculated from the flow rate and hole size. Results show that the discharge coefficient is approximately 0.66 for the pressurized leak tests, 0.74 for the atmospheric leak tests with external connecti
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16

Chou, Chung-Yi, and 周長億. "Catch performance of torch-lighted fishing vessels equipped with light emitting diode(LED)-based fishing lamps." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/42630114068410064734.

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碩士<br>國立臺灣海洋大學<br>環境生物與漁業科學學系<br>102<br>Fishing lamp is one of the most important fishing gears for torch-lighted fisheries and has been used to attract and catch targeted fish. However, catch performance and energy efficiency are equally important for the optimal use of fishing lamps. Light emitting diode (LED)-based fishing lamp is a novel fishing lamps with better energy efficiency compared to traditional fishing lamp such as High-intensity discharge (HID)-based fishing lamp. Therefore, this study aimed to investigate catch performance of torch-lighted fishing vessels equipped with LED-base
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17

Wang, Chung-Cheng, and 王忠誠. "A Study on Naval Vessel’s Repair and Maintenance Strategy Led by Dynamical System Theory." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/55486926239173377410.

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碩士<br>國立中山大學<br>資訊管理學系研究所<br>98<br>Different from terrestrial equipments (tanks and wheeled vehicles) and airborne crafts (planes or helicopters), the R & M (repair and maintenance) issues about naval vessels are profoundly related to their gigantic size, numerous operators, and thousands of various spare parts which individually have small quantity demand for logistic support. That is why the R & M of naval vessels is much more complicated. According to the Defense White Paper of 2009, the whole military force is going to be downsized. Meanwhile, the rescuing and relieving tasks for natu
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18

Franzi, Cathryn Vanessa. "An Australian botanical narrative : a practice-led enquiry into representations of Australian flora on the ceramic vessel as an expression of environmental culture." Phd thesis, 2015. http://hdl.handle.net/1885/109317.

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This practice-led research investigates ways in which representations of Australian flora on ceramic vessels can communicate ideas about current environmental culture. The project developed from a curiosity about whether changing attitudes to Australia's environment, from colonisation to the present time of unprecedented species decline, might be found reflected on historical and contemporary ceramic objects. Botanical exploration and the scientific study of Australia's vast flora have produced a rich resource of natural history documentation. The aim was to establish a framework specific to t
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19

Kuo, Huang-Tsung, and 郭皇宗. "Investigation on the Effect of Structure Improvement on the Irradiation Performance of LED E27 Lamp Installed in Marine Vessels Using Field-Test Method." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/pk7hz3.

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碩士<br>國立臺灣海洋大學<br>輪機工程學系<br>106<br>The design and solution methods for the problem of LED lighting bulbs installed on ships are proposed in this study. Because vessels are frequently operated under the environment of high vibration and high humidity, the currently used U-type light bulbs might encounter frequent failure and even break-down caused by such environment.LED bulbs installed in ships’ lighting system would thus be considered a superior option. However, LED E27 light bulbs generally for land-used purpose could be not adequate for ships primarily due to harsh sailing environment and r
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20

HSIAO, SEN-YI, and 蕭森義. "Investigation on Application of LED Lamps in Marine Leisure and Tourism Industry-with the example of a Passenger Vessel." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/97aptu.

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碩士<br>國立臺灣海洋大學<br>輪機工程學系<br>106<br>In recent years, since the relevant laws and regulations regarding entertainment fishery have been considerably relaxed, the northeast coast of Taiwan has the largest number of sea-fishing boats and the most thriving fishing industry. The dinghy lighting for sightseeing tour can be divided into above water-surface lighting, underwater lighting, interior lighting of ships and decorative lighting. The lighting on sea water is required to have a wide range of illumination, while the lighting into underwater needs deep penetration through sea water. Traditional s
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21

Schuldt, Bernhard. "Effects of experimental drought on hydraulic properties and leaf traits of upper canopy and understory tree species in a perhumid tropical forest in Central Sulawesi, Indonesia." Doctoral thesis, 2010. http://hdl.handle.net/11858/00-1735-0000-0006-ADD8-8.

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22

Szefer, Henry. "The Technology of Copper Alloys, Particularly Leaded Bronze, in Greece, its Colonies, and in Etruria during the Iron Age." Thèse, 2012. http://hdl.handle.net/1866/8414.

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L’objet de la présente étude est le développement, l’application et la diffusion de la technologie associée à divers types d’alliages de cuivre, en particulier l’alliage du plomb-bronze, en Grèce ancienne, dans ses colonies, ainsi qu’en Étrurie. Le plomb-bronze est un mélange de diverses proportions d’étain, de cuivre et de plomb. Le consensus général chez les archéométallurgistes est que le plomb-bronze n’était pas communément utilisé en Grèce avant la période hellénistique; par conséquent, cet alliage a reçu très peu d’attention dans les documents d’archéologie. Cependant, les analyses métal
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