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Dissertations / Theses on the topic 'Z-fiber'

Author: Grafiati

Published: 4 June 2021

Last updated: 19 February 2022

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1

Troulis, Emmanouil. "Effect of Z-Fiber® pinning on the mechanical properties of carbon fibre/epoxy composites." Thesis, Cranfield University, 2003. http://dspace.lib.cranfield.ac.uk/handle/1826/107.

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This study investigates the effects of Z-pinning on the delamination performance in opening and shear loading modes in woven fabric reinforced / epoxy composite materials, as well as the effects of friction between specimen crack faces and the Z-pin failure mechanisms involved in mode II delamination. Mode I and mode II delamination tests are carried out on Z-pinned unidirectional (UD) and woven laminates. Both UD and woven laminates exhibit enhanced delamination resistance and crack propagation stability through Z-pinning. The effects of various structural and Z-pin parameters on the mode I a

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2

Chang, Paul, and mrpc@tpg com au. "The Mechanical Properties and Failure Mechanisms of Z-Pinned Composites." RMIT University. Aerospace, Mechanical and Manufacturing Engineering, 2006. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20070111.145714.

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Z-pinning is a through-thickness reinforcement technology for polymer composite materials that has been developed and commercialised over the past fifteen years. The through-thickness reinforcement of composites with thin metallic or fibrous pins aids in suppressing delamination, improving impact damage tolerance and increasing joint strength. Z-pins are applied to the composite part during its manufacture. Pins are embedded within sheets of foam and placed over the unconsolidated part. Subsequently, the foam is compacted and the pins transferred into the part, which is usually an uncured pr

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3

Berry, Seth David. "Experimental Characterization of Mode I Fracture Toughness of Reinforced Carbon Fiber Laminate with Nano-Cellulose and CNT Additives." Thesis, Virginia Tech, 2016. http://hdl.handle.net/10919/72132.

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Effective treatment of carbon fiber components to improve delamination resistance is vital to the application of such materials since delamination is one of the biggest concerns regarding the use of composites in the aerospace sector. Due to the significant application benefit gained from increased stiffness to density ratio with composite materials, innovative developments resulting in improved through-thickness strength have been on the rise. The inherent anisotropy of composite materials results in an added difficulty in designing structural elements that make use of such materials. Propose

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4

Siqueira, Jonathas de Paula. "Implementação da técnica de varredura-Z com luz branca supercontínua gerada em fibras fotônicas na determinação do espectro de não linearidades." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/76/76131/tde-19052008-134644/.

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Nesta dissertação, propomos um método que combina a técnica de varredura-Z e a luz branca supercontínua gerada em uma fibra fotônica para caracterizar o espectro de não-linearidades de amostras. O espectro não-linear fornece informações cruciais a respeito da característica, da origem e do potencial da não-linearidade para aplicação em dispositivos. Neste sentido, a luz branca supercontínua aliada à técnica de varredura-Z vem permitir uma rápida determinação de espectros numa banda larga. Neste trabalho, a luz branca foi gerada numa fibra fotônica comercial bombeada por pulsos de femtossegund

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5

Schiffnederová, Markéta. "LABYRINT." Master's thesis, Vysoké učení technické v Brně. Fakulta výtvarných umění, 2017. http://www.nusl.cz/ntk/nusl-295736.

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In the past, my work was focused on transferring the flat visual element into the space. I turn away from this concept, because as my Master's thesis I chose a Labyrinth. A labyrinth is not primary flat visual element. My final work is free artistic interpretation of this theme. My work based on classical craftsmanship techniques, which I am using in the new way in my work. I understood this theme labyrinth as an something very personal and individual. Because of this, I decide to create sculpture which will fit in to the gallery space and also the space of everyday life. My expression of the

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6

Morcinek, Tomáš. "Separace aerosolových částic na polymerních membránách." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2021. http://www.nusl.cz/ntk/nusl-449708.

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This diploma thesis deals with the separation of aerosol particles on membranes from polypropylene hollow fibers. As a source of particles, a desktop 3D printer using polymer filaments was used. Filtration efficiency and a pressure drop on a hollow polypropylene fiber membrane and a high efficiency particulate filter (HEPA filter) were monitored during filtration of particles from 3D print using filaments of acrylonitrile butadiene styrene, acrylonitrile styrene acrylate, polylactic acid and polyethylene terephthalate glycol at nearly the same air flow. The results achieved by both filer media

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7

Bulejko, Pavel. "Application of Polymeric Hollow-Fiber Membranes in Air Filtration." Doctoral thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2019. http://www.nusl.cz/ntk/nusl-401603.

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Membrány z dutých vláken jsou široce využívány v aplikacích týkajících se úpravy kapalin jako např. při čištění odpadních vod, v membránových kontaktorech a bioreaktorech, membránové destilaci apod. I když jsou často využívány při separacích směsí plynů, je jejich použití pro mechanickou filtraci aerosolů velmi vzácné. Tato práce se zabývá filtrací vzduchu pomocí polypropylenových membrán z dutých vláken včetně jejich filtrační účinnosti, tlakových ztrát a také zanášením při dlouhodobé filtraci. Filtrační účinnost byla proměřena za použití různých aerosolů jako TiO2 a síran amonný. Tlakové ztr

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8

Břicháček, Pavel. "Studium možnosti optimalizace vlastností alternativních tepelně izolačních materiálů na bázi přírodních vláken." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2014. http://www.nusl.cz/ntk/nusl-226721.

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The presented work investigates the mechanisms of propagation of heat and moisture in the structure of heat-insulating materials based on natural fibers. The main aim of this work is the experimental verification of theoretical patterns, which are involved in the transport of heat and moisture in fibrous materials, especially the influence of fibers thickness and density of the fibrous materials. To widen outputs of the work were selected different kinds of natural fiber materials of vegetable and animal origin. The results of the work should help to optimize the production processes of natura

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9

Sikora, Vojtěch. "Zpracování signálů z optovláknových senzorů." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2018. http://www.nusl.cz/ntk/nusl-377123.

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First two chapters of this paper deals with the division of optical fiber sensors, digital signal processing and includes price comparison of four experimental sensors. In chapter three analysis, description and evaluation of measurment has been demonstrated on Mach - Zehnder interferometer. Last chapter is about application for signal analysis from vibration sensors. Description contains snippets from source code and graphical user interface. This paper includes three fields - fiber optics, digital signal processing and creation of application - and thanks to them it provides solid basis for

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10

Sigmund, Václav. "Posouzení železobetonového prvku použitím pravděpodobnostního přístupu." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2014. http://www.nusl.cz/ntk/nusl-226923.

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This thesis deals with the assessment of reinforced concrete elements using a fully probabilistic approach and its comparison with the method of partial reliability factors. This method of ultimate limit state design will be applied to determine the ultimate limit state of reinforced concrete column loaded by a combination of "N + M", the normal force and bending moment. Specifically, I will solve a circular reinforced concrete column with and without the effect of wrapping unidirectional carbon fiber fabrics and comparing the theoretically determined values with the values determined by exper

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11

Klaavuniemi, T. (Tuula). "PDZ-LIM domain proteins and α-actinin at the muscle Z-disk". Doctoral thesis, University of Oulu, 2006. http://urn.fi/urn:isbn:9514282647.

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Abstract The Z-disk is a sophisticated structure that connects adjacent sarcomeres in striated muscle myofibrils. α-Actinin provides strength to the Z-disks by crosslinking the actin filaments of adjacent sarcomeres. α-Actinin is an antiparallel homodimer, composed of an N-terminal actin binding domain (ABD), the central rod domain, and two pairs of C-terminal EF-hands. The PDZ-LIM domain proteins interact with α-actinin at the Z-disk. Of these proteins, only the actinin-associated LIM protein (ALP), Z-band alternatively spliced PDZ-containing protein (ZASP/Cypher) and C-terminal LIM protein (

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12

Zhang, Xuan ZHANG. "Polymer Films With Enhanced Through Thickness Optical Transmission and Compression Modulus with Electric Field Aligned Glass Fiber/Bubbles." University of Akron / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=akron1463961142.

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13

Bishop, Derron L. "Alterations in Z-line thickness following fast motoneuron transplantation onto slow twitch skeletal muscle fibers." Virtual Press, 1995. http://liblink.bsu.edu/uhtbin/catkey/935926.

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Differentiation of skeletal muscle fibers into fast and slow twitch appears to be under control of the stimulation pattern imparted by motoneurons innervating these muscle fibers. Fast twitch muscle fibers receive intense stimulation for brief periods of time while slow twitch muscle fibers receive less intense stimulation for much longer periods of time. This study examined thickness of Zlines in dually innervated skeletal muscle fibers of slow twitch soleus muscle following transplantation of the fast extensor digitorum longus (EDL) nerve onto the surface of the soleus. Eight individual dual

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14

Malát, Jan. "Technicko-ekonomické porovnání nekonvenčních technologií AWJ a LBM z hlediska potřeb firmy." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2011. http://www.nusl.cz/ntk/nusl-229944.

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This study deals with unconventional materials cutting technology with a fo-cus on abrasive water jet cutting and CO2 laser. The thesis is divided into theoretical and experimental section. The theoretical part describes principles and functions of nonconventional technologies, the basic division and practical applications. The practical part is focused on choosing the best technology with the production of samples and their subsequent comparison. The thesis recommends producer and type of the machine which best meets requirements on basis of the test results.

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15

Burns, James Robert. "An investigation of Z-direction density profile development during wet pressing." Diss., Available online, Georgia Institute of Technology, 1992:, 1992. http://etd.gatech.edu/theses/available/ipstetd-442/burns%5Fjr.pdf.

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16

Bartošová, Andrea. "Občanská stavba." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2020. http://www.nusl.cz/ntk/nusl-409977.

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Basic of this Diploma thesis is Civil construction in Kostelec nad Orlici, which is in a part of city, where is planning off-grid community housing. Part of off-grid community housing is considered a partially sistainable civil construction, serving both for cultural use through the club, for commercial purposes such as various salons (hairdresser, massage or shop), as well as for sports activities with the possibility of small refreshments, such as bouldering, climbing wall and exercise hall. Four sustainable (off-grid) familly houses, which aren´t the subject of this thesis, are considered.

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17

Štulrajterová, Lujza. "Vlastnosti vláken na bázi polyhydroxybutyrátu." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2018. http://www.nusl.cz/ntk/nusl-376819.

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Táto práca sa zaoberá zvlákňovaním biopolymérov z taveniny. V teoretickej časti sú zhrnuté doterajšie poznatky o zvlákňovaní poly(3-hydroxy butyrátu) (PHB) a poly(mliečnej kyseliny) (PLA). Následne boli zvláknené polymérne zmesi na báze PHB s rôznym zložením, čo umožnilo štúdium vplyvu PLA, zmäkčovadiel a ich množstva na vlastnosti pripravených vlákien. Boli použité tri komerčné zmäkčovadlá (ATBC, PEG, A6) a dva experimentálne syntetizované. Zvláknenie bolo prevedené na troch rôznych zvlákňovacích linkách. Konvenčné zvlákňovacie linky s odťahovými rýchlosťami nad 150 m/min sa preukázali ako ne

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18

Horáková, Lucie. "Možnosti využití vláken na bázi druhotných a snadnoobnovitelných surovin při výrobě pokročilých stavebních materiálů." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2018. http://www.nusl.cz/ntk/nusl-372213.

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The diploma thesis dealt with the possibilities of of utilization fiber-based and secondary easy-renewable raw sources in the production of lightweight building materials. The theoretical part includes literature search of the researches, which dealt with this issue. Appropriate sources of fibers were selected within the theoretical part and the findings were used in the practical part of the thesis. Within the practical part laboratory measurements and subsequent selection of the most suitable fibers were performed. Laboratory measurements and subsequent selection of the most suitable fibers

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19

Wan-Chi, Huang, and 黃婉綺. "The Developments and Competitive Strategies of Taiwan’s Fiber Optics Communication Industry-Take Z Company as an Example." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/09973488510048297524.

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碩士<br>輔仁大學<br>科技管理學程碩士在職專班<br>96<br>This research probes into the optic communication industry in current and the trend it towards. Furthermore, the competition strategy will also be analyzed thoroughly. Optic communication used to entitled as a leading role for future Taiwan Industry development. However, is has undergone a tremendous hit by the “dot com” crash in 2000. The world-wide tele-communication companies have amended their development plans on constructions and in building the relevant network communication facility. It therefore cut down the need and depressed the ongoing constructi

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20

Wu, Jiin shyi, and 吳錦昔. "DISCUSSION ON THE COMPETITIVE STRATEGY OF SUSTAINABLE DEVELOPMENT—TAKE THE TEXTILE AND FIBER INDUSTRY Z COMPANYAS AN EXAMPLE." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/5xh59h.

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碩士<br>元智大學<br>管理碩士在職專班<br>106<br>Early Taiwan economic development is limited to domestic demand insufficient, so dedicated to export-oriented mode development, traditional industry in the textile industry is the main export industry one, but with the recent years international trade Center of gravity area transfer, coupled with China mainland and Southeast Asia part of the National rapid development and rise, textile and other labor-intensive industries, production Center of gravity have to as the economic development of change, gradually transfer to cost more low Southeast Asian countries (s

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21

Eppley, Geary W. "Simulating Z' boson going to positron electron events at sqrt.s = 40 TeV to evaluate a proposed silicon-scintillating fiber tracking system for SDC." Thesis, 1992. http://hdl.handle.net/1911/13668.

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Computer simulation is used to study the ability of a proposed silicon-scintillating fiber tracking system for SDC to correctly interpret $Z\sp\prime\to e\sp+e\sp-$ events. Two versions of the Lund Monte Carlo model for inelastic non-diffractive events are compared to existing data and then evaluated at $\sqrt{s}=40$ TeV. We use the two versions to generate the associated particles in $Z\sp\prime\to e\sp+e\sp-$ events and find that the predicted occupancy in the proposed tracking system varies by $\approx$50% between the two versions. The tracking system is able to reconstruct the $e\sp+e\sp-$

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22

(8713962), James Ulcickas. "LIGHT AND CHEMISTRY AT THE INTERFACE OF THEORY AND EXPERIMENT." Thesis, 2020.

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Optics are a powerful probe of chemical structure that can often be linked to theoretical predictions, providing robustness as a measurement tool. Not only do optical interactions like second harmonic generation (SHG), single and two-photon excited fluorescence (TPEF), and infrared absorption provide chemical specificity at the molecular and macromolecular scale, but the ability to image enables mapping heterogeneous behavior across complex systems such as biological tissue. This thesis will discuss nonlinear and linear optics, leveraging theoretical predictions to provide frameworks for inter

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