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Dissertations / Theses on the topic 'Plastic Ratio'

Author: Grafiati

Published: 5 June 2025

Last updated: 2 August 2025

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1

Fugagnoli, Alice. "The ratio of plastic to plankton in the Mediterranean Sea." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amslaurea.unibo.it/16962/.

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Plastic pollution is a huge problem that is affecting all the oceans of the Earth. Plastic items end into the sea, break into tiny pieces and pollute the marine environment. The aim of this research is to increase our knowledge on this problem by comparing microplastic and zooplankton distributions. Samples from the Mediterranean Sea and Gibraltar Strait have been collected and analyzed. Plastic fragments have been extracted, weighted, photographed, measured and analyzed with a hyperspectral camera. The planktonic part of the samples has been analyzed identifying the main typology of organism

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2

Barnes, Graham Edward. "The plastic limit and workability of soils." Thesis, University of Manchester, 2013. https://www.research.manchester.ac.uk/portal/en/theses/the-plastic-limit-and-workability-of-soils(28a2491e-6178-4993-aa10-4b68cf892570).html.

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Previous thread rolling methods for the plastic limit are shown to be inadequate and inaccurate. Alternative methods for the plastic limit are shown to be imprecise and unreliable. The strength-based concept and use of the fall-cone test to determine the plastic limit are shown to be flawed. An apparatus that replicates Atterberg’s rolling technique, devised and developed by the author, is described, referred to as the Barnes Apparatus. A thread of soil is rolled between two plates configured to permit extrusion and reduction of diameter with much less operator interference than with the stand

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3

Uvieghara, Mathias N. "The Effect of Deborah Number and Aspect Ratio on the Film Casting of LLDPE Melts." Fogler Library, University of Maine, 2004. http://www.library.umaine.edu/theses/pdf/UviegharaMN2004.pdf.

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4

Dareeju, Biyanvilage. "Performance evaluation of unsaturated rail track foundations under cyclic moving wheel load." Thesis, Queensland University of Technology, 2017. https://eprints.qut.edu.au/102697/4/Biyanvilage%2520Sampath%2520Sri%2520Sameera_Dareeju_Thesis.pdf.

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This thesis developed an alternative laboratory element testing method to evaluate the response of the unsaturated soils of rail track foundations under repeated moving wheel loadings. The novel laboratory testing method is more capable of producing the realistic strength-deformation characteristics of the unsaturated soils with the effects of principal stress axis rotation (PSAR), which can be used to redesign the conservative rail track guidelines.

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5

Scielzo, Nicholas David. "Measurement of the beta-neutrino correlation in laser trapped {sup 21}Na." Berkeley, Calif. : Oak Ridge, Tenn. : Lawrence Berkeley National Laboratory ; distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2003. http://www.osti.gov/servlets/purl/821455-YDxgQ2/native/.

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Thesis (Ph.D.); Submitted to Univ. of California, Berkeley, CA (US); 1 Jun 2003.<br>Published through the Information Bridge: DOE Scientific and Technical Information. "LBNL--54350" Scielzo, Nicholas David. USDOE Director. Office of Science. Nuclear Physics (US) 06/01/2003. Report is also available in paper and microfiche from NTIS.

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Okonkwo, Igweani Uchenna Titus. "Optical fiber transmission systems for in-door next generation broadband access network." Thesis, Brunel University, 2014. http://bura.brunel.ac.uk/handle/2438/10539.

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This thesis investigates the generation and radio-over-fibre (RoF) transport of unlicensed 60 GHz millimetre-wave (mm-wave) frequency band. The investigated benefits of transmission schemes applicable for the mm-wave generation include optical carrier suppression (OCS), optical frequency multiplication (OFM) and remote heterodyne detection (RHD). For the in-door cabling of the mm-wave transmission, a low-cost polymer optical fibre (POF) along with bend-insensitive single mode fibre (BI-SMF) has been investigated for short-range networks. Transporting mm-wave generated signals over POF and BI-S

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Elsheikhi, Salah A. "A holistic approach to injection moulding optimisation for product quality and cost through the characterisation of reprocessed polymeric materials and process monitoring : experimental evaluations and statistical analysis of multiple reprocessing of unfilled and short glass fibre filled polypropylene materials : an optimised methodology to realise minimum product cost at an acceptable product quality." Thesis, University of Bradford, 2011. http://hdl.handle.net/10454/5405.

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The plastics industry is one of the fastest growing major industries in the world. There is an increase in the amount of plastic used for all types of products due to its light weight and ability to reprocess. For this reason, the reprocessing of thermoplastics and the usability of reprocessed materials are gaining significance, and it is important to produce and consume plastic materials in an environmentally friendly way. In addition, rising raw material cost linked to the increased oil prices encouraged for reusing of the plastic materials. The aim of this research was to study and optimize

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8

Murtagian, Gregorio Roberto. "Surface integrity on grinding of gamma titanium aluminide intermetallic compounds." Diss., Available online, Georgia Institute of Technology, 2005, 2004. http://etd.gatech.edu/theses/available/etd-08192004-181021/unrestricted/murtagian%5Fgregorio%5Fr%5F200412%5Fphd.pdf.

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Thesis (Ph. D.)--Mechanical Engineering, Georgia Institute of Technology, 2005.<br>Ashok Saxena, Committee Member ; Carlos Santamarina, Committee Member ; Thomas Kurfess, Committee Member ; Hugo Ernst, Committee Member ; Steven Danyluk, Committee Chair ; David McDowell, Committee Member. Vita. Includes bibliographical references.

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9

Mitschker, Felix [Verfasser], Peter [Gutachter] Awakowicz, and Anjana [Gutachter] Devi. "Influence of plasma parameters in pulsed microwave and radio frequency plasmas on the properties of gas barrier films on plastics / Felix Mitschker ; Gutachter: Peter Awakowicz, Anjana Devi ; Fakultät für Elektrotechnik und Informationstechnik." Bochum : Ruhr-Universität Bochum, 2019. http://d-nb.info/1175205095/34.

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10

Santos, Ana Sofia Neves dos. "A inserção da economia portuguesa nas cadeias globais de valor : o caso do sector da borracha e dos plásticos." Master's thesis, Instituto Superior de Economia e Gestão, 2014. http://hdl.handle.net/10400.5/7574.

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Mestrado em Economia Internacional e Estudos Europeus<br>O presente trabalho tem como objectivo estudar o sector da borracha e dos plásticos de forma a perceber a sua importância para a economia portuguesa. Começa-se por analisar alguns dos seus indicadores económicos: valor bruto de produção (VBP), valor acrescentado bruto (VAB), emprego, produtividade do trabalho e stock de capital fixo. De seguida, realiza-se uma breve análise do desempenho das empresas do sector através de alguns dos seus rácios económico-financeiros. Analisam-se ainda os multiplicadores de produção, valor acrescentado e e

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11

Rysová, Ludmila. "Hodnocení finanční situace podniku a návrhy na její zlepšení." Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2008. http://www.nusl.cz/ntk/nusl-264886.

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My master´s thesis focuses on the processes involved in conduction of overall financial assessment of the company using financial analysis method. The aim of this thesis is to recommend actions for improving the current financial situation of the corporation Alfa Plastik, a.s. The thesis is divided into four main parts. The first part deals with the general characteristics of the company, the theoretical part describes the financial analysis procedure using new findings and ascertainments from literature. The practical part analyses the financial situation of the company through application of

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12

Clonts, Charlène. "Ontophonie et pictopoésie dans l'oeuvre de Gherasim Luca. : etude de la "variation continue"." Thesis, Pau, 2016. http://www.theses.fr/2016PAUU1006/document.

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Cette thèse étudie le processus de variation continue comme une trame de fond de l’oeuvre complète de Gherasim Luca, afin de mettre en valeur ses aspects plastiques et phoniques, leur articulation ainsi que la façon dont la pictopoésie et l’ontophonie participent à l’autogénération textuelle. Considérant l’oeuvre à la croisée des arts, l’analyse souligne la structure des espaces textuel et iconique. Elle s’intéresse en outre aux figures (personae) émergeant d’une esthétique protéiforme et à l’espace figural du langage, mettant aussi à l’épreuve la théorie deleuzienne de la variation continue p

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13

Chen, Wei-Cheng, and 陳韋丞. "The relationship between the story drift ratio and the plastic hinge rotation of ductile frames." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/54481156862416907055.

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碩士<br>國立臺灣大學<br>土木工程學研究所<br>90<br>In general, story drift ratios can be easily obtained during structure analysis. And a story drift ratio is usually used to approximate the rotating angle of the corresponding plastic hinge. Such approximation, however, is not always true except that the two ends of a story beam yield at the same time. Therefore, how the ratio and the rotating angle relate is concerned in this research. First, the slope-deflection method is used to derive the relationship between these two quantities measured in the analysis of a one story and one bay frame. Then the relations

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14

JUN-NAN, CHEN, and 陳俊男. "Effects of Mixing Ratio of Recycled and New PVC/NBR Plastic on the Molding Quality." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/rafdwg.

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碩士<br>國立高雄應用科技大學<br>模具系碩士在職專班<br>106<br>This research use automobile industry commonly used polyvinyl-chloride/Ding nitrile rubber (PVC/NBR) revertex fresh material and the recycling material take the sample, after the analysis different fresh material and the recycling material mix mix the proportion the material nature, discusses the PVC/NBR recycling material the increase proportion to be different and relations each examination result.The research method first uses the injection molding to test the material properties of each test piece, including the nature of the analysis (Hot Melt index

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15

Umberg, David 1987. "Dynamic properties of soils with non-plastic fines." Thesis, 2012. http://hdl.handle.net/2152/ETD-UT-2012-05-5854.

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The results from an experimental study on the dynamic properties of sand with nonplastic silt are presented. Combined resonant column and torsional shear equipment is used to evaluate the effects of confining pressure, shearing strain, frequency, and number of cycles of loading on the dynamic properties of silty sand. The goal of this study is to determine if relationships in the literature for sands and gravels are accurate for predicting the shear modulus and material damping characteristics of soil with nonplastic fines or if the incorporation of a fines content parameter improves predictio

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16

Meng-HanLi and 李孟翰. "Multiple response optimization experiment for optical plastic lens hard coating under the ratio of utility and cost." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/95299633555119733934.

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碩士<br>國立成功大學<br>工業與資訊管理學系碩士在職專班<br>103<br>Plastic optical lenses replace the glass lens gradually with the rapid development of plastic photovoltaic industry, and occupy most of the global markets.Optical lenses product quality is required strictly.To achieve impact resistance and anti-wear effect, plastic optical lenses are required coatinghard film layers on its surface because of the low hardness and poor wear resistance. This study is to investigate the relationship between the surface of plastic lenses and precision optics hard coating process conditions. This is a multiple response optim

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17

Rauch, H. P. "The significance of Poisson's ratio in the determination of stress and settlement in soils." Thesis, 2015. http://hdl.handle.net/10539/18148.

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18

蕭光理. "A Study of the ratio of Changeover and Processing time for TPS through Kaizen in Plastic Injection Molding." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/47446070469585669525.

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19

Heidarialamdarloo, Jamshid. "Advanced communications with plastic optical fibers." Doctoral thesis, 2018. http://hdl.handle.net/10773/25881.

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Nowadays, fiber to the Home/Curb/Building/Cabinet (FTTx) services that interconnect homes with a standard glass optical fiber cables to the core/access optical networks have brought the optical fiber at the doorsteps of our homes. However, the last few miles in home access network is still based on the limited bandwidth electronic component which supports by the cooper wires e.g. Cat-5, 6. The rapid growth of personal smart/mobile electronic devices with new developments such as video on demand, High Definition (HD) and three-Dimension (3D) television (TV), cloud computing, video conferences,

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20

Yen, Hsuan, and 嚴萱. "A study of verification on the mixing ratio of recycled and new polypropylene plastics." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/07238234779000239666.

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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>Petrochemical plastic products have been widely used in modern societies, but environmental impact resulted from waste plastics has become a vital issue regarding environmental protection. Currently there are green marks or regulations regarding recycled plastics, which request that specific products must be blending with certain ratios of postconsumer recycled plastics. To follow the rules, manufacturers can verify their renewable materials by self-declaration or commission the renewable materials to a third party for verification. However, there’s s

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21

Chieh, Hsiao Tung, and 蕭東捷. "Did the ECFA Affect the Performances and Technology Gap Ratios of Listed Plastic Companies?" Thesis, 2016. http://ndltd.ncl.edu.tw/handle/fa7ye7.

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碩士<br>南臺科技大學<br>企業管理系<br>104<br>Through Meta-Frontier Data Envelopment Analysis, this study utilizes Fixed Assets, Operating Cost, Operating Expenses inputs and Net Operating Income output to assess the Business performance of listed plastic industry companies in Taiwan during 2009~2014.We divided the plastic industry into plastic raw materials, plastic products and plastic processing categories. The empirical results show(A) in terms of Total Efficiency (TE) plastic products category showed the best result during this research, as the plastic processing category showed the poorest one. More

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22

Wu, Chien-Hui, and 吳千慧. "The Comparative of Financial Ratios as Predictors of Failure in Taiwan Electrical and Plastic Industries." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/80024677543124121024.

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碩士<br>國立屏東科技大學<br>企業管理系碩士班<br>93<br>The purpose of this study is to build a financial distress prediction model for Taiwan electrical and plastic industries. We modify Lau’s(1987) financial distress five stages and use the 21 financial indices from the Taiwan Stock Exchange Corporation(TSEC) to detect stages to which they belong. Through Kruskal-Wallis tests and Mann-Whitney tests, we find financial indices differ in different financial stages. Further, we integrate industry factor with financial indices to construct a multinomial logit model of financial administration stages for investors. E

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23

Nadimpalli, Siva. "Characterization and Prediction of Fracture within Solder Joints and Circuit Boards." Thesis, 2011. http://hdl.handle.net/1807/29822.

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Double cantilever beam (DCB) specimens with distinct intermetallic microstructures and different geometries were fractured under different mode ratios of loading, ψ, to obtain critical strain energy release rate, Jc. The strain energy release rate at crack initiation, Jci, increased with phase angle, ψ, but remained unaffected by the joint geometry. However, the steady-state energy release rate, Jcs, increased with the solder layer thickness. Also, both the Jci and Jcs decreased with the thickness of the intermetallic compound layer. Next, mode I and mixed-mode fracture tests were performed

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24

HSU, BO-AN, and 許柏安. "A Study of Relationships Between Physical Properties of Polypropylene Plastic and Its Reprocessed Cycle with Various Blending Ratios." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/4f6zkw.

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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系碩士班<br>105<br>Petrochemical plastic products have been indispensably part of societies, but the problems caused by limited resources of oils and the impact of waste plastics on environments have drawn attention to recycle and reuse of postconsumer plastics. Previous study has investigated the correlation between virgin/reprocessed polypropylene (PP) chips blending ratio and their physical properties, and establish relationship equations among them. Nonetheless, in that study, the source of the virgin chips was inconsistent with that of the reprocessed material, th

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Su, Heng-Sheng, and 蘇恒生. "Studies and Applications of Using Novel Plastic Optical Fiber to Setup Fiber Optical CATV / Radio-over-Fiber Transport Systems." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/56775685607657360858.

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博士<br>國立臺北科技大學<br>光電工程系研究所<br>100<br>Optical fiber with characteristics like low attenuation, high bandwidth, high speed, and electromagnetic noise interference (EMI) free is widely used in constructing communication transport systems. As a communication medium, glass single-mode fiber (SMF) offers much better performances than plastic optical fiber (POF). Also, glass single-mode fiber (SMF) can apply in backbone and access network. Nevertheless, fiber optical communication systems for last mile end user applications have not yet addressed. Building a feasible and an economical technique struc

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Su, Heng-Sheng, and 蘇?琤. "Studies and Applications of Using Novel Plastic Optical Fiber to Setup Fiber Optical CATV / Radio-over-Fiber Transport Systems." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/hkr23c.

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博士<br>國立臺北科技大學<br>光電工程系研究所<br>100<br>Optical fiber with characteristics like low attenuation, high bandwidth, high speed, and electromagnetic noise interference (EMI) free is widely used in constructing communication transport systems. As a communication medium, glass single-mode fiber (SMF) offers much better performances than plastic optical fiber (POF). Also, glass single-mode fiber (SMF) can apply in backbone and access network. Nevertheless, fiber optical communication systems for last mile end user applications have not yet addressed. Building a feasible and an economical technique struc

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27

Lee, Shih-Chang, and 李士璋. "EndoFEM Simulations of Crack Growth Induced Plastic Wake and Closure Load on Al2024-T3 CCT Specimen under Various Stress Ratios." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/22482460963764766101.

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28

Parrish, Kristen Nguyen. "Nanoscale graphene for RF circuits and systems." 2013. http://hdl.handle.net/2152/21248.

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Increased challenges in CMOS scaling have motivated the development of alternatives to silicon circuit technologies, including graphene transistor development. In this work, we present a circuit simulator model for graphene FETs, developed to both fit measured data and predict new behaviors, motivating future research. The model is implemented in Agilent ADS, a circuit level simulator that is commonly used for non-standard transistor technologies, for use with parameter variation analyses, as well as easy integration with CMOS design kits. We present conclusions drawn from the model, including

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Shao, Chiang-sung, and 邵江松. "A Comparison of Financial Ratios of Plastic Industry before and after the Revision of Statement of Financial Accounting Standards: A Case Study of TAITA Chemical Company." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/28916181338728241855.

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碩士<br>國立高雄第一科技大學<br>金融研究所<br>100<br>This thesis uses the t-test and F-test methods to investigate the impact of the revisions of Statement of Financial Accounting Standards (SFAS) No.10, No.34, and No.35 on the operating performance and profitability of TAITA Chemical Company. First, empirical results indicate that the debt to total assets ratio significantly increases, and solvency, operating ability and profitability significantly improve for TAITA Chemical Company after the revision of the SFAS No.10. Furthermore, TAITA Chemical Company have significantly higher debt to total assets ratio,

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30

Simões, João Mário Fonseca Rodrigues. "Efeito do tratamento térmico e do substrato na propagação de fendas por fadiga em provetes de aço obtidos por fusão seletiva a laser." Master's thesis, 2018. http://hdl.handle.net/10316/85984.

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Dissertação de Mestrado Integrado em Engenharia Mecânica apresentada à Faculdade de Ciências e Tecnologia<br>O objetivo da presente investigação prende-se com a compreensão do efeito do tratamento térmico de envelhecimento e do substrato na propagação de fendas por fadiga em componentes obtidos por fusão seletiva a laser.A fusão seletiva por laser faz parte de um grupo de tecnologias de manufatura por adição que utiliza um processo camada por camada para obter componentes com geometrias diversas. Esta tecnologia recorre à modelação 3D como fonte de informação e a um feixe de laser de alta potê

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(8741097), Ritwik Bandyopadhyay. "ENSURING FATIGUE PERFORMANCE VIA LOCATION-SPECIFIC LIFING IN AEROSPACE COMPONENTS MADE OF TITANIUM ALLOYS AND NICKEL-BASE SUPERALLOYS." Thesis, 2020.

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<div>In this thesis, the role of location-specific microstructural features in the fatigue performance of the safety-critical aerospace components made of Nickel (Ni)-base superalloys and linear friction welded (LFW) Titanium (Ti) alloys has been studied using crystal plasticity finite element (CPFE) simulations, energy dispersive X-ray diffraction (EDD), backscatter electron (BSE) images and digital image correlation (DIC).</div><div><br></div><div>In order to develop a microstructure-sensitive fatigue life prediction framework, first, it is essential to build trust in the quantitative predic

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