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Dissertations / Theses on the topic 'Zemijan'

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Published: 9 March 2023

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1

SAMBO, ANNA. "Seguendo gli zemijan: etnografia di una citta' africana in movimento." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2010. http://hdl.handle.net/10281/21974.

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Attraverso una ricerca etnografica che si snoda tra le strade di Cotonou, capitale economica del Benin, e che si focalizza sulla figura dello zemijan (guidatore di moto-taxi), il lavoro affronta le tematiche contemporanee più stringenti per la popolazione, come disoccupazione, politica, economia formale e informale, informazione, che sono comunque radicate in una storia fatta di reti sociali e scambi basati su un sistema clientelare che permane, pur cambiando forma espressiva.
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2

Lorenc, Daniel. "Namrzavost upravených zemin v podloží vozovky." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2018. http://www.nusl.cz/ntk/nusl-372244.

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This diploma thesis deals with the issue of the effect of freezing on soils in subgrades of road structures. The theoretical part compares methods of determining the frost susceptibility of soils used in selected countries of the European Union and the Czech Republic. It also explains the principle of frost heave in subgrade layers. The aim of the practical part is to compare the direct and indirect method of determining frost susceptibility in the Czech Republic and the California bearing ration CBR or the immediate bearing ratio IBI.
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3

Nečasová, Zdislava. "Možnosti urychlení doby odležení cihlářských zemin." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2012. http://www.nusl.cz/ntk/nusl-225519.

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This master thesis is focused on comparing the options available to accelerate thematuring period of brick dough. There were four types of brick clay from differentfactories of the Czech Republic. From each of these four earth were created by three tests. One dough was stored in the laboratory, the second was heated in an oven and the third dough was added sulphite liquor. In these tests was studied mainly maturing and then further the effect the swallowed sulphite liquor on other properties (plasticity, sensitivity to drying, drying change of length and flexural strength). The result of job evaluation should be, how much time and how it will reduce the time of maturing.
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4

Bayrak, Mehmet Çağrı Keskin Sıddıka Nilay. "Zemin suyu özelliklerinin emme basıncı üzerindeki etkileri /." Isparta : SDÜ Fen Bilimleri Enstitüsü, 2008. http://tez.sdu.edu.tr/Tezler/TF01119.pdf.

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5

Chlachula, Jakub. "Vývoj nové technologie ztekucení a stabilizace zemin." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2018. http://www.nusl.cz/ntk/nusl-371972.

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Nowadays, efforts are being made to reduce the environmental impact on the planet even at soils management. Excavated soils are treated as waste and often end up in landfill or depot landfills. It is an effort to exploit these soils. By adding suitable stabilizing additives, features such as yield fluidity, moisture or compressive strength can be adjusted. This composite can be further liquefactioned by using water and suitable liquefiers or plasticizers. Such iquefactioned soils are a suitable self-compacting grouts dressing for excavation for the laying of utility grids, where it is necessary to fill the hole again. The advantage are low economic demands and the absence of excess waste. In the course of this thesis the situation of soil usability in the Czech Republic will be evaluated and possible technologies of soil adjusters will be described. Further, the known types of stabilizing additives and their influence on soil stabilization will be evaluated and verified. Then, different types of liquefying additives will be evaluated and verified. The aim of the thesis is to develop a new technology of liquefaction and soil stabilization.
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Mašek, Jakub. "Namrzavost zemin a materiálů v podloží vozovek." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2013. http://www.nusl.cz/ntk/nusl-226039.

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This diploma thesis deals with the issue of the determination of the frost susceptibility of soils in the subgrades of road structures. The theoretical part compares the ways of testing the frost susceptibility in the Czech Republic and other selected countries of the European Union. Furthermore, it also deals with the development of the frost susceptibility index in the Czech Republic. The empirical part focuses on the laboratory testing of the frost susceptibility of the given sample of soil by the direct frost heave method. Moreover, it also deals with the simulation of penetration of frost by the subgrade and the possibility of shortening the length of the freezing during the direct testing the frost susceptibility.
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7

Eren, Şevki Filiz Mümin. "Geleneksel zemin stabilizasyon yöntemlerinin Consolid Sistemi ile karşılaştırılması /." Isparta: SDÜ Fen Bilimleri Enstitüsü, 2006. http://tez.sdu.edu.tr/Tezler/TF00992.pdf.

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8

Sokolová, Veronika. "Namrzavost zemin a druhotných materiálů v podloží vozovek." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2015. http://www.nusl.cz/ntk/nusl-227447.

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Destruction of road constructions due to the frost is in locations with temperatures under the zero a problem which leads to permanent deformation. The theoretical part of this thesis deals with the freezing process of the pavement and its subgrade. It presents methods for determining the rate of frost susceptibility in both the Czech Republic and abroad. Describes the materials used in the subgrade of roads and their suitability in terms of frost susceptibility. The thesis closely examines the fly-ashes, their properties and possibilities of using in the construction industry. The practical part of the thesis focuses on the performance of direct laboratory frost heave tests, immediate bearing index tests, California bearing ratio tests and cyclic load triaxial tests to determine the modulus of elasticity. Tests are carried out on the soil, the soil mixtures with certain percentages of fly ash from different sources at the same soil treated with lime. Then the results are compared and dependence between the measured characteristics of materials is created.
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9

Michalčíková, Magdaléna. "Výzkum technologie zpětného využití zemin ve formě samozhutnitelných zálivek." Doctoral thesis, Vysoké učení technické v Brně. Fakulta stavební, 2019. http://www.nusl.cz/ntk/nusl-401598.

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The increasing volume of waste of all kinds is currently a phenomenon of economically developed society and one of the problems of environmental protection. It is therefore imperative, in the interest of sustainable development, to monitor impacts related to the impact on our ecology, to regulate waste production by legislation and universally promote their reuse and recycling. Construction and demolition waste occupy a significant share of the total waste volume. This category also includes excavated soils. Recycling of these materials could significantly reduce the amount of landfilled waste and at the same time, these materials could be used as an important source of secondary raw materials. The doctoral thesis describes the research and development of the new technology of reuse soils in the form of self-compacting grouts. The result of the solution will be a suspension of optimal rheological properties, providing a perfect leaking around the stored utility networks. Emphasis will be placed on the study of the interaction of different types of soils with the stabilizers, flowable or plasticizing additives and its typical dispersible substance, including verification of the developed technology in situ.
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10

Marek, Ondřej. "Detekce vsakování vody do zemin injektovaných jíly metodou EIS." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2020. http://www.nusl.cz/ntk/nusl-409717.

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The diploma thesis deals with the study of water infiltration into soil samples with various types of clay. The soil matrix was represented by homogeneous sand; clay samples were supplied by LB Minerals, Ltd. Soil analysis with injected clays was focused on sealing ability of examined clays for possible use in construction practice for the construction of sealing objects. Electric impedance spectrometry (EIS) measuring system was used to monitor the infiltration process. The measurement was carried out by a measuring apparatus made by the solution of the international project E! 7614 of applied research in the EUREKA program within its sustainability.
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11

Yiğiter, Nurdan Kalyoncuoğlu Ümit Yalçın. "Isparta Çünür Bölgesi'nde yüzey dalgası yöntemi ile zemin özelliklerinin araştırılması /." Isparta : SDÜ Fen Bilimleri Enstitüsü, 2008. http://tez.sdu.edu.tr/Tezler/TF01228.pdf.

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12

Líšková, Ivana. "Stanovení geotechnických vlastností zemin s využitím metody Elektrické impedanční spektrometrie." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2017. http://www.nusl.cz/ntk/nusl-265699.

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This diploma thesis deals with determination of geotechnical properties of soils with using method of electrical impedance spectrometry (EIS). For measurement was used device Z-meter of 3rd generation, which was developed with projects of international program of applied research EUREKA. Experiment was realized in Laboratory of soil mechanics in GEOtest a.s. in Brno.
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Avcar, Mehmet Avey Abdullah. "Elastik zemin üzerinde bulunan homojen olmayan elastik kirişin stabilite ve titreşimi /." Isparta: SDÜ Fen Bilimleri Enstitüsü, 2007. http://tez.sdu.edu.tr/Tezler/TF01014.pdf.

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14

Pech, Filip. "Nové kompozice pokročilých oxidicky zpevněných ocelí na bázi prvků vzácných zemin." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2017. http://www.nusl.cz/ntk/nusl-318785.

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The main objective of present diploma thesis is to prepare three different classes of steels, differing by their content of chromium: 9Cr, 14Cr, 17Cr steels and their oxide dispersion strengthened variants. Steels were prepared from atomic and pre-alloyed powders by the mechanical alloying and compacted by the spark plasma sintering method. Used strengthening elements were yttrium, which is most commonly used, and aluminium. Preparation of oxide dispersion was done in two ways: direct adding of yttria and alumina and inner oxidation of aluminium and yttrium. In the experimental part has been found, that it is possible to make oxide dispersion by both ways, but aluminium strengthened steel has to be prepared by inner oxidation to ensure fine oxide dispersion.
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15

Prechtlová, Kateřina. "Studie chování vyztuženého zeminového bloku pod koncetrovaným zatížením." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2016. http://www.nusl.cz/ntk/nusl-240305.

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This thesis deals with numerical 3D modeling of reinforced earth block under concentrated wheel load. This is a parametric study, which varies entering face and load position and even his own task. And either by simplification of the CSN 73 0037 or directly. At the beginning briefly describes the construction of reinforced soil in terms of history, application, construction, and properties of materials from which the structure is formed. Attention is also paid to static action and methods of spreading of a concentrated load to earth block. structural design using analytical methods is also part of the thesis
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16

Rolls, David. "The emergence of the 'Jiang Zemin Era': legitimacy and the development of the political theory of 'Neo-Conservatism' -- 1989-1995." University of Southern Queensland, Faculty of Arts, 2004. http://eprints.usq.edu.au/archive/00001500/.

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This research addresses the establishment of the 'Jiang Zemin Era' whereby Jiang Zemin, and the Chinese Communist Party, have attempted to relegitimise the Party and have attempted to make the Party meaningful to the Chinese populace. What is fundamental to this research is how Jiang Zemin, as the ‘core leader’ of the third generational leadership, incorporated the political thought of neo-conservatism (xin baoshouzhuyi) into the framework of Marxist-Leninist-Mao Zedong Thought (MLM) ideology in order to re-legitimise the CCP. The timeframe within the research is from Jiang’s appointment as the General Secretary of the CCP in 1989 until 1995. It is important that this was a time period whereby Jiang had to consolidate, and therefore legitimise, his ‘core leadership’, and provide a theoretical platform in order to bring forth his own ‘era’. The research is predominantly a historiographical narrative, utilising both primary and secondary sources, that examines the mechanisms Jiang utilised in order to create a strong government, with himself as the ‘core’, which pursued increased levels of marketisation. Indeed, after being appointed General Secretary of the Chinese Communist Party in 1989, Jiang Zemin had to achieve two goals in order to sustain and legitimate his position as ‘the core of the third generational leadership’. First, he had to secure his position as ‘the core’ through the creation of secured networks and alliances as well as legitimise of his ‘informal’ and ‘formal’ positions in the CCP hierarchy. In order to achieve this, Jiang had to first create a sustainable power base in order to retain, and therefore legitimise, his formalized positions as General Secretary of the CCP, Chairman of the Chinese Military Commission and the Presidency. In addition, he needed to be able to create alliances with both allies and protégés as well as differing power factions, be they conservative/elder or reformist, and with other leading figures like Li Peng and Zhu Rongji. Second, in order to further reinforce and legitimize his position as ‘the core’, Jiang had to develop his own ‘theoretical framework’ for governing the country – much as Mao and Deng had done previously. Therefore, the research also examines Jiang’s usage of the neoconservatism as a means of not only legitimising the CCP’s ideological framework but also as a means of providing his own ‘guiding thought’, thus enabling him to establish his own ‘era’. Indeed, after establishing himself as the ‘core’ through the aforementioned processes, Jiang had to develop such a theoretical framework that complimented Deng’s economic reforms, especially as he was designated by Deng, yet one that retained a smattering of Mao Zedong’s ‘Thoughts’ that could be applied pragmatically during the 1990s. It can be seen that Jiang Zemin successfully incorporated the political thought of ‘neo-conservatism’ within his platform in order to achieve these ends – including the establishment of a ‘Jiang Zemin Era’. This political thought, a successor to the political theory of ‘neo-authoritarianism’, already had several adherents within the higher echelons of the CCP. Indeed, it would be Jiang’s 1995 speech, entitled ‘Stressing Politics’, that would signify the incorporation of neo-conservatism within Jiang’s platform of (self) legitimation that would initiate the successful implementation of a ‘Jiang Zemin Era’.
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17

Šandová, Iva. "Stanovení obsahu vody v zemině metodou EIS." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2013. http://www.nusl.cz/ntk/nusl-226153.

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This thesis deals with the measurement of water content in soil using electrical impedance spectrometry. The aim is to characterize and determine the conditions of applicability of this method and of measuring apparatus with device Z-meter III for instance for the application of the field measurements of earth dams.
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18

Sedláková, Alena. "Monitorování infiltrace simulovaných splachových vod metodou EIS v laboratorních podmínkách." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2015. http://www.nusl.cz/ntk/nusl-227327.

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This thesis deals with the application of the electrical impedance spectrometry (EIS) method and the implemented Z-meter III device, Z-meter IV device respectively, while observing the infiltration of simulated flushing water with the aim of assessing the possibility or the appropriateness of its use. The experiment was carried out in the Laboratory of Water Management Research.
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19

Fryš, František. "Srovnávací analýza modelování pohledového čela vyztuženého násypu." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2013. http://www.nusl.cz/ntk/nusl-226338.

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The thesis deals with numerical modeling of reinforced earth wall. The first part of the thesis characterizes and describes these constructions in general and also describes variations of their faces. In the next part the modeling of basic reinforced earth wall construction elements in Plaxis 2D is described. Subsequently the real reinforced earth wall is modeled and some variations of face-modeling are compared.
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20

Ceditoğlu, Deniz Keskin Sıddıka Nilay. "Karayolu taşıtlarının temel zeminlerinde oluşturduğu dinamik etkilerin azaltılmasında yeni bir yaklaşım /." Isparta : SDÜ Fen Bilimleri Enstitüsü, 2008. http://tez.sdu.edu.tr/Tezler/TF01116.pdf.

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21

Hladík, Aleš. "Sledování modulů pružnosti podloží vozovek." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2013. http://www.nusl.cz/ntk/nusl-225934.

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This thesis deals with compares the procedures carried out in the cyclical load triaxial testing device according to CSN EN 13286-7, and the procedures performed in the United States of America. In the practical part elasticity moduls of mixed recycled material are experimentally compared with mixed recycled material containing binder(connective material) and with fine-grained soil in the cyclical load triaxial testing device. Further the thesis assesses the use of mixed recycled material in the construction of a third class low-load pavement.
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Ekr, Jan. "Numerické modely pro posuzování stability zemního svahu." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2012. http://www.nusl.cz/ntk/nusl-225631.

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The master’s thesis deals with numerical patterns for evaluation of the stability slopes. Solutions have been made with finite element method for different design situations with using programme system ANSYS. The results were compared with conventional approaches determining of the slope safety factor.
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Fránková, Hana. "Ověření technologie BioSealing metodou EIS." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2017. http://www.nusl.cz/ntk/nusl-265705.

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Diploma thesis is dealing with recognition of Biosealing technology using electrical impedance spektrometry method. BioSealing is an innovative method of soil body reconstruction, which uses stimulation of soil bacterial activity to seal the leakage. The method was developed in the Netherlands and it was used in conditions of the Czech Republic in years 2015 and 2016 on the Hornice water work. This earth dam was monitored by electrical impedance spectrometry by apparatus with device Z-meter IV in this period and the data are processed and assessed in this diploma thesis.
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Šafaříková, Hana. "Vliv obsahu kalcitu v cihlářských zeminách na vlastnosti vypáleného střepu." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2013. http://www.nusl.cz/ntk/nusl-225878.

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This master´s thesis is focused on the use of primary raw materials (clays) in the brick manufacturing. These soils differ mainly CaO contect and it most often in the form of calcite. Diversity of soils is manifested primarily in the mineralogical composition after firing and the existence of anorthite in the calcium clays. In the practical part I am trying to define the optimal type of soil suitable for the production of masonry units.
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Dubčák, Pavel. "Založení polyfunkčního domu v Olomouci." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2012. http://www.nusl.cz/ntk/nusl-225413.

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The topic of my master`s thesis is to design foundations of multifunctional building in Olomouc. Another part of this master`s thesis deals with safe and economic design solution of shoring wall. This construction is used to built underground parts of the building. The last part of the work contains description of technological proces of the geotechnics constructions execution. The drawing documentation is also included.
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Karásková, Romana. "Funkční zkoušení recyklátů do pozemních komunikací." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2012. http://www.nusl.cz/ntk/nusl-225419.

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The work is divided into two parts. The practical part deals with the testing properties of soils which are using in new road in Nové Město na Moravě and the testing of recycled materials which could replace this soils from road. The aim this part is to obtain values of elastic modulus which are then inserted into the computational model. In the second part of work the track road is modeled in the software which uses the Finite Element Method to calculate and respect physical properties of different materials and a load. The result of work will be studies with comparison of displacement and stress generated to using existing soils and recycled materials.
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Kasza, Radomír. "Stavebně technologický projekt Pavilonu farmacie na VFU v Brně." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2014. http://www.nusl.cz/ntk/nusl-227057.

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This master´s thesis solves the construction technological project of Pharmacy Pavilon II at the Veterinary University in Brno. It consists of parts of the project site equipment, technical reports, schedule of the main building, the control and test plan, design, an inventory of machines, financial plan of organization development, a register of environmental aspects, technological regulations and the plan for securing material resources.
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Janků, Ondřej. "Výstavba výrobní a administrativní budovy - stavebně technologický projekt." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2015. http://www.nusl.cz/ntk/nusl-227825.

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The subject of my master's thesis is elaboration of construction technological project of research building in Uherské Hradiště. This building is actually outbuilding to existing manufactoring plant. The work includes solution of transport rotues and supplying construction site by main construction sources, project of site facilities, mechanization proposal and scheduling. A part of the work is new design of foundation structure and appropriate technological prescriptions and control plan to this because of missing some informations in procurement project.
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Štainerová, Lenka. "Návrh zajištění hlubokého zářezu." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2015. http://www.nusl.cz/ntk/nusl-227640.

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The aim is to design economical and above all safe securing a deep notch, both in the construction phase and throughout the use of the building. In the first part of the thesis Background research will be given an idea of the construction of the geotechnical point of view. The second part will contain the geotechnical design calculation. The third part will be proposed safety recommendations in terms of geotechnical monitoring.
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Malinský, Martin. "Založení stavby River Garden III v Praze." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2015. http://www.nusl.cz/ntk/nusl-227540.

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The topic of this master's thesis are the design of ensuring foundation pit and foundation of administrative building in Prague. In the vicinity of foundation pit is situated the river Vltava, which directly influences the ground water level at the job site. During construction, it is necessary to envisage the possibility of occurrence of the old building structures of docks.
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Charvátová, Pavlína. "Matematická simulace průběhu teplot v podzákladí a vytvoření modelu odpovídajícího reálnému stavu." Doctoral thesis, Vysoké učení technické v Brně. Fakulta stavební, 2020. http://www.nusl.cz/ntk/nusl-433509.

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Increasing demands for low heat losses and energy intensity of a building influence energy calculations. Higher demands are placed on the accuracy of the calculations. An important part of the thermal engineering calculations is the determination of the correct boundary conditions. An important input factor is primarily the indoor and outdoor environment, and temperature is the most important parameter for these types of enviromnent. It is not always the temperature of the external environment, but the environment that is adjacent to the soil or to unheated or differently heated spaces. The possibilities of modeling temperatures below the object are described in the standard ČSN EN ISO 10211. This standard specifies details for a geometric model for the numerical calculation of heat flows to assess the total heat loss of buildings or parts thereof, as well as to derive linear and point heat transfer factors. Furthermore, to calculate minimum surface temperatures to assess the risk of surface condensation and to determine the surface temperature factors. These are two different computational models. Therefore, it would be appropriate to simplify these calculations by simplifying the boundary conditions, namely to conduct an isotherm at a certain level below the terrain, which will be considered as a boundary condition, which is also based on long-term experience with "frost-free" depth. This calculation would be unambiguous, clear and simple.
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Hájek, Jan. "Projekt podzemních garáží v Brně." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2012. http://www.nusl.cz/ntk/nusl-225505.

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The goal of the project is behaviour and dimensioning of selected monolithic concrete structure elements. Design and assessment of the building foundation was made. Slabs of the floors are dimensioned in detail. All computations are made in accordance with Eurocode 2. Drawing documentation is part of this project.
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Drozd, Michal. "Vybrané části stavebně technologického projektu psychiatrické kliniky Fakultní nemocnice Brno." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2020. http://www.nusl.cz/ntk/nusl-409919.

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The subject of my diploma thesis are selected parts of the construction technology project of the psychiatric clinic of the University Hospital Brno based on the provided project documentation. It is an extension of a new six-storey building to the existing buildings. The thesis contains a technical report to the construction technology project, the coordination situation of the construction, the situation of wider transport routes, time and financial plan by objects, study of the realization of the main technological stages, a site equipment design, a design of a machine set, technological regulation for monolithic structures, quality control and testing plan of monolithic structures, noise study and selected documents for LEED certification.
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Šrámek, Jiří. "Stavebně technologický projekt výrobní a administrativní haly ATX." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2019. http://www.nusl.cz/ntk/nusl-392191.

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The subject of this master’s thesis is a solution of chosen parts of building construction project. The project solves industrial hall that contains productions and administrative space. This thesis includes technological regulations for substructure, study of performing the main technological stages, design of using machines, checking and testing plans. Other phrases parts are time schedules, budget, calculations, design of site equipment including engineering report and report for performing access road. Starting materials, which were used for this thesis, were engineering report also including working drawings.
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Gabriel, Jan. "Obytný soubor Nový Žižkov - stavebně technologický projekt." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2019. http://www.nusl.cz/ntk/nusl-392137.

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The subject of this diploma thesis is the elaboration of a construction technological project for the construction of a residential complex Nový Žižkov in Poděbrady, where I will focus on the technological stage of the gross building of the main building SO-01 apartment building – section BI+BII (56 dwelling units). The supporting system of the building is composed of a combination of monolithic reinforced concrete structures and ceramic blocks. The foundation of a residential building is designed as a reinforced concrete basin with reinforcing ribs. The diploma thesis contains a text and attachment part.
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36

Legut, Dana. "Zakládání na objemově nestálých zeminách." Doctoral thesis, Vysoké učení technické v Brně. Fakulta stavební, 2014. http://www.nusl.cz/ntk/nusl-233826.

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This dissertation is concerned with the foundations in volume unstable soils and objects disorders which are related to this. The thesis was focused on the study of clay and loess soils which are abundant in the geological profile of the Czech Republic. First, the formation of the two groups of soils is introduced, then their properties are examined and finally the influence of vegetation on the former type and the influence of collapsibility in the latter type are investigated. The conclusion is, in fact, a recommendation on the design of structures so that the system of clay / structure is not damaged and that structures are not subject to renovations. Several instance of problems with structures are discussed which were subject to structural repairs employing both a civil and geotechnical engineers.
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37

Imanzadeh, Saber. "Effets des incertitudes et de la variabilité spatiale des propriétés des sols et des structures sur le dimensionnement des semelles filantes et des conduites enterrées." Phd thesis, Université Sciences et Technologies - Bordeaux I, 2013. http://tel.archives-ouvertes.fr/tel-00803563.

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Le sol présente une variabilité spatiale des propriétés physiques et mécaniques dont les effets sur des structures légères avec semelles filantes et sur les conduites enterrées ne sont pas bien pris en compte dans leur dimensionnement. Cette variabilité naturelle peut être très importante dans le cas de ces ouvrages car elle induit des tassements différentiels, dont les conséquences peuvent être dommageables : fissures dans les murs, les poutres ou encore des fuites dans les réseaux d'assainissement. La variabilité naturelle du sol et l'incertitude liée à la connaissance imparfaite des propriétés du sol et/ou du béton ou de l'acier de la structure sont les principales sources d'incertitude dans le choix des paramètres de calcul pour le dimensionnement de ces structures. Dans cette thèse, une approche analytique avec les méthodes probabilistes (FOSM et SOSM) et le modèle de Winkler, puis numérique avec le couplage de la méthode des éléments finis avec des approches géostatistiques ont été successivement menées pour modéliser le comportement des semelles filantes et des conduites enterrés lorsque les incertitudes sur les propriétés mécaniques du sol et de la structure sont prises en compte dans leur dimensionnement. Il apparait ainsi, l'importance du comportement longitudinal de ces ouvrages et du poids des incertitudes dans leur dimensionnement.
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38

Janáčová, Lenka. "Vibroflotace - hloubkové zhutňování zemin." Master's thesis, 2010. http://www.nusl.cz/ntk/nusl-297486.

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Presented master thesis deals with the issues of deep compaction of soils and its application in the Czech Republic. In the introduction part are briefly resumed current methods of improving foundation soils and their application in our conditions. In following chapters the thesis address only to improving foundation soils, both the very vibroflotation, and application of gravel columns. First, the methods are technically described according standards and many years of experience with the implementation worldwide. The aim of this work was to assess the factors which may affect the application in our conditions. These factors include the geological structure of the Czech Republic, applicability tests, methods to verify the quality of the deep improvement construction and the application in the urban areas. The work contains also reports from various construction areas. The maps of applicability? according to individual input conditions are presented in the conclusion part.
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39

Kaštil, Jiří. "Magnetokalorický jev sloučenin vzácných zemin." Doctoral thesis, 2014. http://www.nusl.cz/ntk/nusl-338022.

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This work presents study of magnetocaloric properties of compounds exhibiting unusual magnetic characteristics. Several systems were studied: TbNiAl, (Tb,Y)NiAl, TbNi(Al,In), TbFeAl, GdFeAl, Ni2MnGa based compounds and amorphous metallic alloy Gd-Co-Al-Y. Influence of magneto-crystalline anisotropy on magnetocaloric effect was studied on singlecrystalline sample of TbNiAl compound. The maximum of entropy change was measured with orientation of magnetic field along c axis and compared to polycrystalline sample a 100% increase was observed. Substitutions of Y and In in TbNiAl led to a change of magnetic ordering. Both substitution led to increase of RCP values of studied material. TbFeAl and GdFeAl compounds, characterized by partial disorder of Fe and Al atoms, showed magnetocaloric effect in wide temperature region which led to interesting values of RCP~350 J kg-1 . Very broad region of magnetocaloric effect was also observed on amorphous metallic material of Gd-Co-Al-Y. The effect of Er substitution in Ni2MnGa based compound on its magneto-structural transition, connected with inverse magnetocaloric effect, was studied. The direct measurement method of adiabatic temperature change is described and instrument for such measurement, developed in collaboration with FZU AVČR, v.v.i., is presented.
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40

Šantrůčková, Hana. "Ztekucení zemin v geotechnickém inženýrství." Master's thesis, 2009. http://www.nusl.cz/ntk/nusl-279352.

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41

Pospíšilová, Eliška. "Prvky vzácných zemin v elektroodpadech." Master's thesis, 2014. http://www.nusl.cz/ntk/nusl-341384.

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Rare earth elements consist of 15 lanthanides, Y and Sc. They are currently very important materials in many industrial branches (metalurgy, pollishing). One of these options is the usage as the compound of phosphors in electronic devices (television and computer displays. Because of their manufacturing cost, options of recovery from waste electrical and electronic equipment (WEEE) are investigated. This thesis deals with compoud elements of phosphors from displays of type CRT (cathode ray tube) and plasma TV. The 37 samples of phosphors from different displays were taken and processed for study of the compoud elements. Phosphors were separated to 4 subgroups in accordance with the corresponding type of displays: black-and-white CRT television displays (CRT_CB), color CRT television displays (TV_B), color PC displays (PC_B) and monochromatic PC displays (PC_M). The study was carry out by multiple features analysis that combined the inductively coupled plasma mass spectrometry (ICP-MS), the inductively coupled plasma optical emission spectrometry (ICP-OES), the resistance furnace with infrared detector (RF-IF) and the atomic absorption spectrometry (AAS). Based on the results of this analysis, main elements and potentionally hazardous elements of phosphors subgroup were defined. Concentration of rare...
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42

Lacinová, Johana. "Creep zemin z výsypky dolu 5. květen." Master's thesis, 2010. http://www.nusl.cz/ntk/nusl-286337.

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43

Roháč, Jakub. "Experimentální stanovení smykové pevnosti zemin z oblasti sesuvu Dobkovičky a vývoj korelačních vztahů mezi pevností zemin a jejich fyzikálními vlastnostmi." Doctoral thesis, 2021. http://www.nusl.cz/ntk/nusl-448247.

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Critical and residual states are key soil conditions relevant to slope stability. Evaluating the available shear strength in relation to these conditions is crucial for reliable stability analyses. The best way to determine the strength parameters is through properly selected laboratory tests of soil mechanics. However, in specific cases, these parameters can be estimated based on other material properties of soils. The work clarifies the applicability of various correlation equations from the literature and proposes new relationships, created from laboratory- determined results of strength and index parameters of soils from the Bohemian Central Mountains. It shows how different equations or different material properties of soils can predict the required value of strength. The work also describes how the residual strength of soils and its estimation can be affected. This is mainly caused by the clay fraction proportion and by the shear rate used in its laboratory determination. The results are applied to a specific geotechnical problem - to estimate the critical state and the residual friction angle of soils from the selected study area of the D8 motorway, which is well known thanks to the stability problems. Last but not least, various errors and misunderstandings are discussed, which are often...
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44

Jui-Chun, Shang, and 尚瑞君. "The Study of Jiang Zemin''s Power Consolidation." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/24297240878054078183.

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45

Trhlíková, Jana. "Mechanické chování zpevněných jemnozrnných zemin - simulace neporušených vzorků." Doctoral thesis, 2013. http://www.nusl.cz/ntk/nusl-327390.

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The mechanical behaviour of natural clays is influenced by the degradation of the structure developed during and after deposition. In order to model the influence of structure artificially cemented specimens have been prepared. A series of one-dimensional compression tests of cement treated kaolin specimens were analysed. The effect of bonding and debonding on compression of the specimens was observed. The compression of cemented specimens was not monotonic, depending on disturbance of the structure. Cement content and curing period were found the main factors influencing the compressibility of cement treated kaolin clay. The possibility of using cement treated kaolin to model naturally cemented soil was confirmed. For the purpose of the research described in this dissertation, artificial cementation bonds were created in a model clayey material by adding 4% of Portland cement to kaolin clay. The mechanical behaviour of the model material at compression and shearing was compared with the behaviour of the pure reconstituted kaolin clay. Triaxial CIUP tests were carried out in determining the shear strength. Submersible LVDT's and bender elements were used for measuring of the shear modulus to identify the destructuration of the specimens. The experimental behaviour was successfully simulated by the...
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46

Mayer, Petr. "Zdroje a hodnocení variability mechanických vlastností hrubozrnných zemin." Master's thesis, 2013. http://www.nusl.cz/ntk/nusl-322942.

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This thesis builds on the work of Dr. Radek Suchomel (2011), which dealt with the use of probabilstic methods in geomechanics and discusses the issues associated with inaccuracies in laboratory experiments. For this purpose it was necessary to design and prepare a set of laboratory experiments so as to obtain sufficient data for evaluation, calibrated, hypoplastic constitutive model, which is defined parameters φc, hs, n, ec0, ei0, ed0, α and β. On the basis of these parameters, the data was compared. For this purpose it was appropriate to 40 measuring the angle of repose, 40 triaxial tests and 40 oedometric tests on coarse-grained soil that was sand with missed fraction < 0.063 mm fraction and without fraction > 3 mm, which was classified as the same grain soil, poorly sorted. On this soil is managed successfully to evaluate fully the parameters for 38 samples. Two samples failed to calibrate only the parameters α and β. Test results and subsequent calibration of parameters hypoplastic constitutive model intended that observed variability affects the resulting values of eight parameters hypoplastic constitutive model, which is largely discussed, where there is a comparison with data of Suchomel (2011). With the help of coefficients of variation and standard deviations are concluded that some of...
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47

Chen, Chih-Hung, and 陳志洪. "Party-Army Relations in the Era of Jiang Zemin." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/34298504228412704088.

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碩士
國立中山大學
大陸研究所
90
Abstract In the era of Jiang Zemin, the core leader of third generation has not be much more powerful than other leaders. Hence, he needs to build a coalition to gathering varied interests that supported his leadership. He had to bargain and compromise with other leading officials, to generate resources in order to reward and maintain the coalition which supporting him in power. Based on such “give and take” relations, he had been relatively weak when bargain with military or other interest groups within Chinese political system. And that might be the major reason to explain why the People’s Liberation Army (PLA) could get the unforeseeable political influence in the Jiang era. When discussing the Party-Army relations in the Jiang era, it would be useful to view the PLA as an interest group in the Chinese political system. Therefore, I posit two basic assumptions to analyzing such relations. The first is that army and Party are engaged in a chronic and multiform conflict stemming from their incompatible outlooks and interests. The second is that Party would insist in controlling the army and keep suppressing the expression of its group interests. Besides, several variables would be introduced to identify such conflict. These include the declination of ideological indoctrination, the power reduction of the political control system in the army, the absence of regularized procedures for the transfer of political power within the ruling Party elite, the acceptance of the principle of collective leadership, and the modernization of the economy. These factors would be used to explain the transformation of the Party-Army relations.
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48

Englmaierová, Martina. "Mechanické vlastnosti zemin z pískovny Kolný v třeboňské pánvi." Master's thesis, 2010. http://www.nusl.cz/ntk/nusl-295820.

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This thesis originated as a part of the PhD research carried out by Mgr. Radek Suchomel. To calibrate a hypoplastic model for granular materials a large number of laboratory tests was needed and a part of the testing constitutes the present thesis. The hypoplastic model by von Wolffersdorff (1996) has eight materials parameters. The critical state fiction angle φc', which was obtained directly by the measurement of the angle of repose, is one of the eight parameters. Other parameters are determined form the results of experiments and empirically. Aim of this thesis was to carry out field and laboratory tests, to determine selected soil properties and to interpret them with regard to the variability of the soil in the selected face of the sand pit. The material for investigation comes from the south part of the Cretaceous Třeboň Basin in the South Bohemia from the Kolný sand pit. The pit is located in the upper part of the Klikov layers. The fluvial layers are characterised by rhythmical variation of gravely sands, sands and sands with dark grey clayey inclusion. Samples were taken in the face of the sand pit with the dimensions of 9 x 36 m. The following tests were performed: drained triaxial compression test (38 samples), oedometric compression test (38 samples), measurement of the angle of repose...
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49

Dubroková, Jitka. "Biogeochemický cyklus prvků vzácných zemin v povodí Lesního potoka." Doctoral thesis, 2009. http://www.nusl.cz/ntk/nusl-286848.

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110 Summary The study of biogeochemical cycle of rare earth elements (REE) carried out in the Lesní potok catchment and its vicinity (located in the Nature State Reserve, Voděradské bučiny, 30 km SE of Prague) was focused on the monitoring of REE concentrations and distribution patterns in natural environment, their relationship with other analysed elements and compounds such as Al, Ca, Fe, K, Mg, Mn, Na, P, S, Si, F- , Cl- , NO3 - SO4 2- , HCO3 - and organic carbon, and its response to physicochemical conditions in various investigated ecosystem compartments. The samples of soil, stream sediment, stream and ground water, rainwater and throughfall in beech and spruce forest, samples of tree assimilatory organs, bark and stem wood of Norway spruce (Picea abies) and European beech (Fagus sylvatica) and lichens (Hypogymnia physodes) were collected in the catchment and its vicinity. Liquid samples were acidified with dilute nitric acid to prevent losses by adsorption, and filtered using a 0.45 µm membrane filter. Stream water samples sampled in months characterized by low and high discharge were processed by ion exchange chromatography and membrane dialyses. Solid samples were dried to constant weight (and sieved and homogenized in case of soil stream sediment samples) and decomposed in the microwave oven with...
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50

Petružálek, Matěj. "Určení rychlosti smykové vlny na vzorcích zemin v triaxiálním přístroji." Master's thesis, 2006. http://www.nusl.cz/ntk/nusl-373981.

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