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Дисертації з теми "Elastic characteristics"

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1

Tang, Gary Xiangmin. "Suction characteristics and elastic-plastic modelling of unsaturated sand-bentonite mixture." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0019/NQ45012.pdf.

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2

Vasudeva, Sumit. "Estimation of Elastic and Damping Characteristics of Viscoelastically Constrained Carbon Strands." Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/36467.

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<p> Traditional large space structure construction incorporates the use of lightweight tubular metal alloys that have good strength to weight and stiffness to weight ratio. Recently, however, space structure construction has shifted focus on materials that are ultra lightweight, have high strength, have low package volume and possess excellent damping characteristics. Substantial damping is required in space since there is no surrounding medium to provide damping. Such a construction uses composites in a fabric form that displays viscoelastic behavior. The viscoelastic behavior is attributed t
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3

Hurd, Randy C. "On the Free Surface Skipping Characteristics of Highly Deformable Elastic Spheres." BYU ScholarsArchive, 2015. https://scholarsarchive.byu.edu/etd/5891.

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When a highly deformable elastic sphere impacts a water surface at an oblique angle it can skip several times in a manner similar to a skipping stone. However, this sphere seems to skip more readily and with more ease than a traditional skipping stone. This thesis examines the improved skipping characteristics of highly deformable elastic spheres made from cured silicone rubber. The effect of impact velocity, impact angle, sphere diamter and material shear modulus on ricochet trajectory is experimentally examined using high speed photography and image processing techniques. Experimental evalua
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4

Ahmed, Mustofa N. "A Study of Guided Ultrasonic Wave Propagation Characteristics in Thin Aluminum Plate for Damage Detection." University of Toledo / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1387732124.

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5

De, Silva Sandun S. "Vibration characteristics of steel-deck composite floor systems under human excitation." Thesis, Queensland University of Technology, 2007. https://eprints.qut.edu.au/16538/1/Sandun_De_Silva_Thesis.pdf.

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Steel-deck composite floor systems are being increasingly used in high-rise building construction, especially in Australia, as they are economical and easy to construct. These composite floor systems use high strength materials to achieve longer spans and are thus slender. As a result, they are vulnerable to vibration induced under service loads. These floors are normally designed using static methods which will not reveal the true behaviour and miss the dynamic amplifications resulting in inappropriate designs, which ultimately cause vibration and discomfort to occupants. At present the
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6

De, Silva Sandun S. "Vibration characteristics of steel-deck composite floor systems under human excitation." Queensland University of Technology, 2007. http://eprints.qut.edu.au/16538/.

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Steel-deck composite floor systems are being increasingly used in high-rise building construction, especially in Australia, as they are economical and easy to construct. These composite floor systems use high strength materials to achieve longer spans and are thus slender. As a result, they are vulnerable to vibration induced under service loads. These floors are normally designed using static methods which will not reveal the true behaviour and miss the dynamic amplifications resulting in inappropriate designs, which ultimately cause vibration and discomfort to occupants. At present the
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7

Верещака, Сергій Михайлович, Сергей Михайлович Верещака, Serhii Mykhailovych Vereshchaka та М. М. Дем'яненко. "Пружні сталі матеріалу шаруватої структури". Thesis, Сумський державний університет, 2014. http://essuir.sumdu.edu.ua/handle/123456789/40275.

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При проектуванні конструкцій з композиційних матеріалів має місце досить велика кількість можливих варіантів і схем армування. Тому визначення оптимальних властивостей таких матеріалів при мінімальних витратах на експеримент є актуальним теоретичним завданням.
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8

Lowe, Robert Lindsey. "Finite-Deformation Modeling of Elastodynamics and Smart Materials with Nonlinear Electro-Magneto-Elastic Coupling." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1433276487.

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9

Hofírek, Michal. "Modelování tlakových pulsací v potrubí." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2017. http://www.nusl.cz/ntk/nusl-318683.

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This diploma thesis deals with problem of water hammer in pipes affected by viscoelastic behavior of pipe material. Mathematical model uses pressure dependent speed of sound in water air mixture. For purpose of numerical solution the Method of Characteristics with independent time step is introduced. This method is compared with commonly used methods such as Method of Characteristics (MOC) and Lax Wendroff scheme. Derived model, solved with Method of Characteristics with independent time step, is verified with experimental simulation.
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10

Toroian, Damon Armen. "The Size exclusion characteristics of collagen and elastin fibers and role of fetuin in their calcification." Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2007. http://wwwlib.umi.com/cr/ucsd/fullcit?p3266770.

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Thesis (Ph. D.)--University of California, San Diego, 2007.<br>Title from first page of PDF file (viewed August 6, 2007). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references.
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11

Moragaspitiya, Himenshu Nalindrajith. "Interactive axial shortening of columns and walls in high rise buildings." Thesis, Queensland University of Technology, 2011. https://eprints.qut.edu.au/48026/1/Himenshu_Moragaspitiya_Thesis.pdf.

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Concrete is commonly used as a primary construction material for tall building construction. Load bearing components such as columns and walls in concrete buildings are subjected to instantaneous and long term axial shortening caused by the time dependent effects of "shrinkage", "creep" and "elastic" deformations. Reinforcing steel content, variable concrete modulus, volume to surface area ratio of the elements and environmental conditions govern axial shortening. The impact of differential axial shortening among columns and core shear walls escalate with increasing building height. Differen
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12

Савула, Р. С. "Забезпечення працездатності магістральних газопроводів в процесі тривалої експлуатації у гірській місцевості". Thesis, Івано-Франківський національний технічний університет нафти і газу, 2013. http://elar.nung.edu.ua/handle/123456789/4643.

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Дисертація присвячена дослідженням, спрямованим на забезпечення працездатності магістральних газопроводів в процесі тривалої експлуатації у гірській місцевості за рахунок удосконалення методів аналізу напружено-деформованого стану і оцінки міцності труб з урахуванням деградації матеріалу, відхилення від прямолінійності траси і наявності локальних пластичних деформацій. Досліджені структурні зміни, які відбуваються в сталях магістральних газопроводів в процесі тривалої експлуатації. Оцінено вплив процесів старіння трубної сталі та локальних пластичних деформацій магістральних газопроводів на фі
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13

Sanguinet, William Charles. "Various extensions in the theory of dynamic materials with a specific focus on the checkerboard geometry." Digital WPI, 2017. https://digitalcommons.wpi.edu/etd-dissertations/243.

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This work is a numerical and analytical study of wave motion through dynamic materials (DM). This work focuses on showing several results that greatly extend the applicability of the checkerboard focusing effect. First, it is shown that it is possible to simultaneously focus dilatation and shear waves propagating through a linear elastic checkerboard structure. Next, it is shown that the focusing effect found for the original €œperfect€� checkerboard extends to the case of the checkerboard with smooth transitions between materials, this is termed a functionally graded (FG) checkerboard. With t
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14

Jakel, Roland. "Grundlagen der Elasto-Plastizität in Creo Simulate - Theorie und Anwendung." Universitätsbibliothek Chemnitz, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-87141.

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Der Vortrag beschreibt die Grundlagen der Elasto-Plastizität sowie die softwaretechnische Anwendung mit dem FEM-Programm Creo Simulate bzw. Pro/MECHANICA von PTC. Der erste Teil des Vortrages beschreibt die Charakteristika plastischen Verhaltens, unterschiedliche plastische Materialgesetze, Fließkriterien bei mehrachsiger Beanspruchung und unterschiedliche Verfestigungsmodelle. Im zweiten Vortragsteil werden Möglichkeiten und Grenzen der Berechnung elasto-plastischer Probleme mit der Software dargestellt sowie Anwendungstipps gegeben. Im dritten Vortragsteil schließlich werden verschiedene Bei
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15

Васильєв, Володимир Іванович, Владимир Иванович Васильев та Volodymyr Ivanovych Vasyliev. "Обоснование рациональных динамических параметров предохранительного торможения шахтных подъемных установок". Thesis, Нац. техн. ун-т Укр. "КПИ", 2012. http://essuir.sumdu.edu.ua/handle/123456789/29956.

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Робота присвячена питанням досліджень робочого і автоматично регульованого запобіжного гальмування на багатоканатних і нахилених ШПУ з системами гальм радіального й дискового типу і з метою забезпечення їх ефективної та безпечної експлуатації. В дисертації вперше поставлене і вирішене науково-технічне завдання формування раціональних динамічних параметрів запобіжного і робочого гальмування, з урахуванням природних інерційних і нелінійних властивостей підсистем підіймальної установки. Методи досліджень: аналіз стану систем запобіжного та робочого гальмування; математичне, комп’ютерне моделю
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16

Hsien-Chin, Chiu, and 邱顯晉. "Elastic Characteristics of Taipei Silty Clay." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/43733833194006559137.

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碩士<br>國立臺灣科技大學<br>營建工程技術學系<br>86<br>The objective of this study is to investigate the elastic characteristics of the remolded Taipei silty clay using the Ko-consolidation drained tests with various types of loading/unloading conditions. The consolidation test and Ko-consoliddation drained triaxial compression tests were firstly conducted to understand stress-strain characteristics of the soil. Then a series of the unloading-reloading stress paths were performed to obtain drained elastic constants based on the theory of critical soil mechanics. Tests results indicate that the ratio of drained e
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17

Bhattacharyya, Aneesh. "Propagation characteristics in elastic waveguide with discrete nonlinearity." Thesis, 2018. https://etd.iisc.ac.in/handle/2005/4748.

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Wave propagation in elastic continuum is a subject of interest in many fields of engineering and has been explored for several decades from theoretical, computational and experimental perspective. In this context, a one/two-dimensional elastic continuum is more colloquially called a wave guide since they minimize energy loss by restricting the wave propagation in a specific direction/plane. These one-dimensional elastic wave guides can be dispersion free, for example, an elastic bar propagating longitudinal waves, or can exhibit dispersion, for example, flexural waves in Euler-Bernoulli
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18

Pai, Li-sheng, and 白立生. "Analyzing Elastic Buckling Characteristics of Combined Structures by the Receptance Method." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/48677670249596914098.

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碩士<br>龍華科技大學<br>機械系碩士班<br>92<br>In designing beam/column structures, one of the important factors to be taken into account is the capability to sustain the compressive axial forces. As the compressive axial force exceeds the critical value, the beam/column buckles. Therefore, the reinforcing structures are often applied laterally to prevent the beam/column structures from buckling. In this study, the receptance method was adopted to analyze the elastic buckling characteristics of the combined structures consist of a number of sub-structures and to obtain the approximate solutions
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19

Yang, Hsiao-Ying, and 楊小瑩. "The Structure and Characteristics of the High Count Elastic Core-Spun Yarn." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/08885325927308162133.

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碩士<br>國立臺灣科技大學<br>高分子工程系<br>91<br>In this study, we use cotton fiber as sheath and three kinds of fineness of spandex filament as core to spin elastic core-spun yarn. In this experiment, feed roller was add-on for delivering spandex in various draw ratios. Then spandex passed through a roller with 120° which locates over the front top roller. Spandex was covered with cotton fiber to form the elastic core-spun yarn. We examine and investigate elastic core-spun yarns, so as to discuss the effect of twist factor and the draw ratio of spandex on yarn structure and physical properties. We can find
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20

Kao, Sheng-Yu, and 高聖育. "A Study on the Performance Characteristics of a Synchronous Elastic FIR Filter." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/43220117433638974845.

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碩士<br>國立彰化師範大學<br>資訊工程學系<br>103<br>Elastic systems provide tolerance to the unpredictable timing variations in computation and communication delays. For a synchronous elastic circuit, the handshaking mechanism to synchronize the data communication between sender and receiver is produced at the level of cycle in which the events are synchronized with the clock.   In this thesis, the performance characteristics, i.e., area, delay, and power, of a synchronous elastic circuit are studied by the implementation of a finite impulse response (FIR) filter. The filter is designed as a two-stage pipeline
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21

Wang, Jian-Syun, and 王建勳. "Characteristics of Polypropylene /Polyolefin Elastic and It’s Non-halogen Fire-retardant Blends." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/16409747200611877173.

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碩士<br>萬能科技大學<br>材料科技研究所<br>99<br>Polypropylene (PP) was typical plastic; although it had high mechanical strength, but its elongation and impact resistance was poor. Thus, the polypropylene in this study was blended with 5 to 40wt% polyolefin elastomer (POE) in the twin-screw mixing machine in order to improve the elongation of polypropylene and impact resistance and development a PP/POE blend with elongation and impact resistance. Moreover, the EU is now gradually requirements for halogen-free flame-retardant material, so the PP/POE blend was also adding the halogen-free flame retardant for p
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22

HUANG, KUN-FENG, and 黃崑峰. "DYNAMIC CHARACTERISTICS PREDICTION OF AN ELASTIC BODY IN THE STATE OF CONSTANT ROTATING SPEEDS." Thesis, 1990. http://ndltd.ncl.edu.tw/handle/57811530920252129851.

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博士<br>國立臺灣大學<br>應用力學研究所<br>79<br>The dynamic characteristics of a rotating elastic body are different from those when the body is non-rotational. This is due to the existence of centrifugal force and Coriolis force. The purpose of this paper is to predict the differences in dynamic characteristics. The strain energy is formulated by using the non-linear relation between strain and displacement. Then the Hamilton''s principle is utilized to derive the equation of motion. The concept of the ''Steady St
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23

CHEN, XIAN-ZHONG, and 陳献忠. "The effects of fluid, temperature, and rotation on drnamic characteristics of an elastic body." Thesis, 1992. http://ndltd.ncl.edu.tw/handle/32692714155646319704.

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24

Yeh, Chao-Lung, and 葉昭龍. "An Assessment of Characteristics of Elastic Wave Propagation and Attenuation through Saturated and Unsaturated Soils." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/99676321843098621731.

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碩士<br>國立成功大學<br>水利及海洋工程學系碩博士班<br>94<br>Elastic wave phenomena in porous media containing compressible viscous fluids are of considerable interest to diverse engineering applications. The behaviors of dilatational wave propagation and attenuation through different types of saturated soils whose pore spaces are completely occupied either by water or by air were first investigated in the present study based on the celebrated Biot model equations of poroelasticity. Then, applying the Lo et al. model [2005], we examined the effects of two immiscible pore fluids (water and air) on the behavior of
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25

Lue, JingWen, and 陸景文. "A Study of Creep, Shrinkage, Elastic Strains and Temperature Characteristics on Concrete Bridges in Taiwan." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/02804935308519838715.

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26

Fu, Chung-Ting, and 傅仲廷. "Optimization of the Dyeing Process and Prediction of Quality Characteristics on Elastic Fiber Blending Fabrics." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/34856057595571722373.

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碩士<br>國立臺灣科技大學<br>高分子工程系<br>93<br>This thesis's objective is to optimize the dyeing process's condition and predict its quality characteristics on elastic fiber blending fabrics by using pure PET, mixture of PET and Lycra, pure Nylon, and mixture of Nylon and Lycra as dyed fabrics with the disperse dye and acid dye as dyestuffs. We investigated the dyeing method of one-bath-two-section impregnation as well as the quality characteristic of the fabrics’ color strength values. Our specific aim is to find the optimum combination of processing parameters to achieve customers’ demands by proposing t
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27

Bera, Moumita. "Studies on the characteristics of elastic knitted fabric tubes and their influence on pressure generation." Thesis, 2013. http://localhost:8080/xmlui/handle/12345678/6735.

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28

Yu, Zong-Jing, and 余宗璟. "The correlation among cell physiological characteristics , cell adhesion force and elastic modulus : four different types of osteoblasts." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/59786051037831981255.

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碩士<br>國立嘉義大學<br>生化科技學系研究所<br>99<br>In this study, osteoblasts were cultured on the biomaterial surface, such as poly-ε-caprolactone (PCL) to study the correlation between cell physiological character and mechanical force. The dielectrophoresis force produced by the driving voltage of electrodes is used to measure osteoblast adhesion strength on the biomaterial surface. Osteoblasts used in experiment included human osteoblasts (MG63), mouse osteoblasts (7F2), arthritis normal osteoblasts (OA Normal) and arthritis lesion osteoblasts (OA Lesion). The electric adhesion force of osteoblasts attache
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29

Kuo-YuanTseng and 曾國源. "A numerical study of characteristics of elastic wave propagation and attenuation in a porous medium containing two immiscible fluids." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/96610032258185286378.

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碩士<br>國立成功大學<br>水利及海洋工程學系碩士在職專班<br>102<br>The study of the behavior of elastic wave propagation and attenuation through a fluid-bearing porous medium has been a crucial theme in recent years. In this study, we applied the theory of poroelasticity derived by Lo et al. (2005) to analyze the characteristics of dilatational waves through an elastic porous medium permeated by two immiscible, compressible, and viscous fluids. According to the previous studies, the main purpose of this study is the porous fluids play an important role on the behavior of wave propagation. Therefore, to examine the imp
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30

Hajilar, Shahin. "Nano-Scale Investigation of Mechanical Characteristics of Main Phases of Hydrated Cement Paste." 2015. https://scholarworks.umass.edu/masters_theses_2/151.

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Hydrated cement paste (HCP), which is present in various cement-based materials, includes a number of constituents with distinct nano-structures. The elastic properties of the HCP crystals are calculated using molecular dynamics (MD) methods. The accuracy of estimated values is verified by comparing them with the results from experimental tests and other atomistic simulation methods. The outcome of MD simulations is then extended to predict the elastic properties of the C-S-H gel by rescaling the values calculated for the individual crystals. To take into account the contribution of porosity,
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31

Мацевко, Дмитро Володимирович, та Dmytro Volodymyrovych Matsevko. "Проект дільниці ремонтного цеху для ремонту гальмівної системи автомобіля марки ЗІЛ-433442 з дослідженням методики та алгоритму загального діагностування автомобілів за зміною коефіцієнта корисної дії". Master's thesis, 2019. http://elartu.tntu.edu.ua/handle/lib/30471.

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В дипломній роботі виконано розроблення проект дільниці ремонтного цеху для ремонту гальмівної системи автомобіля марки ЗІЛ-433442 та дослідження методики та алгоритму загального діагностування автомобілів за зміною коефіцієнта корисної дії.<br>The diploma thesis elaborated the design of a repair shop section for repair of the ZIL-433442 car brake system and the study of the methodology and algorithm for the general diagnosis of vehicles by changing the efficiency.<br>Вступ 1 Загально-технічний розділ 2 Технологічний розділ 3. Конструкторський розділ 4 Спеціальний розділ 5 Науково-до
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32

Žáček, Petr. "Počítačové modelování transportu mozkomíšní tekutiny." Master's thesis, 2012. http://www.nusl.cz/ntk/nusl-305159.

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Modelling of cerebrospinal fluid flow is important for understanding its influence on central nervous system, especially spinal cord. One of the reasons for its study is a disease called syringomyelia that probably develops as a result of severance of neural pathways by bubbles emerging during the propagation of pressure (expan- sion) disturbances through spinal cord and its surroundings. It is characterized by fluid-filled cavities in spinal cord. In this thesis, a model of fluid-filled co-axial elastic tubes is proposed that can help us simulate pressure disturbances propa- gation through sp
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Ho, Yu-Ling, and 何玉玲. "Elasto-Plastic Deformation Characteristics of Gravelly Soils." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/83454116561061311578.

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Araújo, Nuno Miguel Faria. "High-speed trains on ballasted railway track : dynamic stress field analysis." Doctoral thesis, 2011. http://hdl.handle.net/1822/12388.

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Tese de doutoramento em Engenharia Civil (área do conhecimento em Geotecnia)<br>The analysis of ballasted railway structures still demands many improvements towards preceding an accurate estimate of its global behavior, i.e, towards reproducing the real performance of the materials and the structure. Furthermore, in the design process, ultimate/serviceability limit states and life cycle costs should be attended. As a result, a wide range of research works are being introduced. This work contributes to the improvement of these processes throughout laboratory and numerical experiments aimi
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Arjomandi, Kaveh. "MECHANICAL RESPONSE OF SANDWICH PIPES SUBJECT TO HYDROSTATIC PRESSURE AND BENDING." Thesis, 2010. http://hdl.handle.net/10222/13156.

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The recent substantial increase in world demand for energy and raw material resources has accelerated oil and gas exploration and production. At the same time, the depletion of onshore and shallow water oil resources presents a challenge to engineers to develop new means of harvesting and transporting oil and gas from harsh and remote areas. Sandwich Pipe (SP) is a relatively new design concept developed to address the transportation of oil in deep and ultra-deep waters as well as in cold environments. The main focus of this thesis is on the characterization of the structural performance of th
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