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Delft University of Technology
1.
van der Linden, Milou (author).
Identity in density-Outside the box: A strategy of the densification of suburbia.
Degree: 2020, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:6ba304a8-8e99-41c7-9e3c-8d8092d8ef54 
► The suburbs of Australia, the place where still most of the Australians live, is historical deep connected with the Australian dream. Melbourne is one of…
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▼ The suburbs of Australia, the place where still most of the Australians live, is historical deep connected with the Australian dream. Melbourne is one of the major cities in Australia consisting of 351 suburbs in total. One of them is St Albans, a suburb between the middle and outer suburbs, 15 km north-west of the city centre. This area is marked by a vast scale, repetition in the built and unbuilt environment, a limited number of dwelling types and a great amount of family living households. The exciting urban structure of the outskirts of the cities are mainly developed on a principle of freestanding villa types on extremely generous lots. At present, it is mainly the city centre of cities in Australia that are being developed, principally as high rise apartment building types in the grid structure of the city due to the forecasted population grow. The city centre of Melbourne is becoming more dense than ever and accordingly the domestic needs are changing. To meet these needs, it will require a housing brief in the middle and outer suburbs of Melbourne. As suburbs are increasingly recognised as part of a city’s wellbeing with their own alternative ideology it opened up a perfect chance to investigate in these parts of the city and offers new opportunities. How to deal with the confrontation between the forecast of a rapidly growing population and the deep historical connection Australians have with the cultural identity of the suburbs in Melbourne? This graduation project is a proposal for a new typology in suburbia. The answer is found in a re-interpretation of the Australian dream. It seeks to defrost the current situation by unlocking the design potentials hidden in the physical structures of the suburbia, initiating a new chapter a low rise high density development. As Melbourne is a place of settlement from the cultural position of colonisations, it will be a mixed housing project construct to different income groups who can not achieve the Australian dream. A dream that is a belief that home-ownership can lead to a better life and is an expression of success and security. The welfare of the state was relatively small due to this mass home-ownership. The distribution of housing costs associated with housing loans led to a demand for a well developed welfare system. The gap between renting and owning a house is too big. The project response to the problem of affordability, accessibility and density in suburbia. Adding an active strip between the neighbourhood and the hospital intended as a lively catalyst for the neighbourhood. The idea is to swap the narrative between permanent and impermanent architecture, changing people’s perspective and bringing attention to a new typology. Together with a new way of living and working, it is up to the community to decide what the project does and what it means. By stepping off from the positive qualities of these areas, in this project St Albans, such as the good public transport connections and family friendly environments. It can be transformed into a new living…
Advisors/Committee Members: Pimlott, Mark (mentor), Koskamp, Gilbert (graduation committee), Rosbottom, Daniel (graduation committee), Delft University of Technology (degree granting institution).
Subjects/Keywords: Densification; suburbs; manual
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APA (6th Edition):
van der Linden, M. (. (2020). Identity in density-Outside the box: A strategy of the densification of suburbia. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:6ba304a8-8e99-41c7-9e3c-8d8092d8ef54
Chicago Manual of Style (16th Edition):
van der Linden, Milou (author). “Identity in density-Outside the box: A strategy of the densification of suburbia.” 2020. Masters Thesis, Delft University of Technology. Accessed January 26, 2021.
http://resolver.tudelft.nl/uuid:6ba304a8-8e99-41c7-9e3c-8d8092d8ef54.
MLA Handbook (7th Edition):
van der Linden, Milou (author). “Identity in density-Outside the box: A strategy of the densification of suburbia.” 2020. Web. 26 Jan 2021.
Vancouver:
van der Linden M(. Identity in density-Outside the box: A strategy of the densification of suburbia. [Internet] [Masters thesis]. Delft University of Technology; 2020. [cited 2021 Jan 26].
Available from: http://resolver.tudelft.nl/uuid:6ba304a8-8e99-41c7-9e3c-8d8092d8ef54.
Council of Science Editors:
van der Linden M(. Identity in density-Outside the box: A strategy of the densification of suburbia. [Masters Thesis]. Delft University of Technology; 2020. Available from: http://resolver.tudelft.nl/uuid:6ba304a8-8e99-41c7-9e3c-8d8092d8ef54
Delft University of Technology
2.
Spasov, Kristian (author).
Stockholm 2050 - A resilient metropolitan region.
Degree: 2017, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:8c13bf4e-f98e-426d-bac3-57137221fb3a
► The aim of this research is to investigate how a strategic vision can be achieved within a time plan, in this case by 2050, and…
(more)
▼ The aim of this research is to investigate how a strategic vision can be achieved within a time plan, in this case by 2050, and investigate the Swedish administrative division, to understand who does what and when. The objective of this project is to set up a detailed time plan and develop several strategies which will work as guidelines for the development of the region, in order to achieve the goals to become a connected, an accessible and a sustainable metropolitan region by 2050. Throughout the project the focus will be on three aspects and these three has one common ground: the growing population.
Densification: To prevent urban sprawl,
densification of the region is needed, in order to ensure housing, jobs and services to the people. Mobility: The public transport is reaching its maximum capacity and many infrastructural investments are needed to ensure people access to the region. Environment: Measurements are needed to protect the environment and at the same time it has to be accessible to the people. These three aspects will be translated into three goals that the region needs to achieve by 2050 in order to become a resilient metropolitan region. An Accessible City: Each citizen of the region should have access to affordable housing, commercial and public services and other services for their daily needs. A Connected City: The region should be well connected and public transport should be the main mean of transportation A Sustainable City: The region should be able to develop and expand and protect its unique environment, without increasing the carbon footprint caused by the growing population.
Advisors/Committee Members: Rocco de Campos Pereira, Roberto (mentor), Stead, Dominic (graduation committee), Delft University of Technology (degree granting institution).
Subjects/Keywords: Resilient; Densification; Mobility
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APA (6th Edition):
Spasov, K. (. (2017). Stockholm 2050 - A resilient metropolitan region. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:8c13bf4e-f98e-426d-bac3-57137221fb3a
Chicago Manual of Style (16th Edition):
Spasov, Kristian (author). “Stockholm 2050 - A resilient metropolitan region.” 2017. Masters Thesis, Delft University of Technology. Accessed January 26, 2021.
http://resolver.tudelft.nl/uuid:8c13bf4e-f98e-426d-bac3-57137221fb3a.
MLA Handbook (7th Edition):
Spasov, Kristian (author). “Stockholm 2050 - A resilient metropolitan region.” 2017. Web. 26 Jan 2021.
Vancouver:
Spasov K(. Stockholm 2050 - A resilient metropolitan region. [Internet] [Masters thesis]. Delft University of Technology; 2017. [cited 2021 Jan 26].
Available from: http://resolver.tudelft.nl/uuid:8c13bf4e-f98e-426d-bac3-57137221fb3a.
Council of Science Editors:
Spasov K(. Stockholm 2050 - A resilient metropolitan region. [Masters Thesis]. Delft University of Technology; 2017. Available from: http://resolver.tudelft.nl/uuid:8c13bf4e-f98e-426d-bac3-57137221fb3a
University of Alberta
3.
Arkell, Nicholas P.
Accelerated dewatering of oil sands tailings by microbially
induced chemical changes.
Degree: MS, Department of Renewable Resources, 2012, University of Alberta
URL: https://era.library.ualberta.ca/files/tq57nr181
► Processing of oil sands ores to extract bitumen generates large volumes of tailings which are deposited into large settling basins, where the solids settle by…
(more)
▼ Processing of oil sands ores to extract bitumen
generates large volumes of tailings which are deposited into large
settling basins, where the solids settle by gravity over 3-4 years
to become mature fine tailings (MFT). Methanogenesis has been
correlated with increased water recovery from and densification of
MFT. This phenomenon offers potential tailings management options,
including biodensification, an accelerated dewatering process where
the microbial community is stimulated by amending MFT with
carbon-substrates. The chemistry of methanogenic accelerated
dewatering was investigated with 2L and 50L settling columns of MFT
amended with carbon-substrates to infer possible mechanisms. It was
found that enhanced biogenic gas production induced chemical
changes in MFT. The carbon-amended MFT had increased pore-water
concentrations of HCO3-, Ca2+, Mg2+ and a lower pH. The pore-water
chemistry affects the colloidal properties of the suspended clays
in the MFT which leads to the accelerated settling of clay
particles and dewatering of MFT.
Subjects/Keywords: Densification; Oil Sand Tailings; Chemistry
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APA (6th Edition):
Arkell, N. P. (2012). Accelerated dewatering of oil sands tailings by microbially
induced chemical changes. (Masters Thesis). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/tq57nr181
Chicago Manual of Style (16th Edition):
Arkell, Nicholas P. “Accelerated dewatering of oil sands tailings by microbially
induced chemical changes.” 2012. Masters Thesis, University of Alberta. Accessed January 26, 2021.
https://era.library.ualberta.ca/files/tq57nr181.
MLA Handbook (7th Edition):
Arkell, Nicholas P. “Accelerated dewatering of oil sands tailings by microbially
induced chemical changes.” 2012. Web. 26 Jan 2021.
Vancouver:
Arkell NP. Accelerated dewatering of oil sands tailings by microbially
induced chemical changes. [Internet] [Masters thesis]. University of Alberta; 2012. [cited 2021 Jan 26].
Available from: https://era.library.ualberta.ca/files/tq57nr181.
Council of Science Editors:
Arkell NP. Accelerated dewatering of oil sands tailings by microbially
induced chemical changes. [Masters Thesis]. University of Alberta; 2012. Available from: https://era.library.ualberta.ca/files/tq57nr181
Victoria University of Wellington
4.
Lim, Jonathan.
The Living Barrier: Residential architecture acting as a noise barrier near railway corridors.
Degree: 2018, Victoria University of Wellington
URL: http://hdl.handle.net/10063/7727
► As urban regions increase in population and density, the need for quietness and spaces of relative calm becomes important to inhabitants’ physiological and psychological health…
(more)
▼ As urban regions increase in population and density, the need for quietness and spaces of relative calm becomes important to inhabitants’ physiological and psychological health and wellbeing. Noises, and the sounds that create them, are treated as a by-product of urban
densification and the advancement of technology. This led to uncontrolled and incidental acoustic environments around notable points of urban
densification. Each sound adds together in the acoustic environment to create a composition that is labelled collectively as noise. Those in the professions of planning and designing these urban environments have a responsibility to become the composers of the grand aural experience that is the worldly soundscape.
In response to this design problem, this portfolio explored how architecture can be designed to enable this sustainable
densification of noisy urban environments. It proposed the incorporation of psychoacoustics and R. Murray Schafer’s soundscape philosophy (and ongoing related research) into acoustic design. By understanding the complex creation of the aural experience, this portfolio investigated whether the key to living healthily and sustainably in an inevitably sound-filled urban environment laid in the design of soundscape as a perceptual construct.
The investigation translated relevant literature into broad explorations of soundscape design elements at a variety of architectural scales. Using soundscape principles in a design process produced a strong architectural proposition that could solve both
densification and acoustic problems. This had widespread and profound implications on architectural design practices. The portfolio therefore prompts further explorations into soundscape design for other architectural problems and applications.
Advisors/Committee Members: Petrovic, Emina.
Subjects/Keywords: urban densification; soundscape design; acoustics
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APA (6th Edition):
Lim, J. (2018). The Living Barrier: Residential architecture acting as a noise barrier near railway corridors. (Masters Thesis). Victoria University of Wellington. Retrieved from http://hdl.handle.net/10063/7727
Chicago Manual of Style (16th Edition):
Lim, Jonathan. “The Living Barrier: Residential architecture acting as a noise barrier near railway corridors.” 2018. Masters Thesis, Victoria University of Wellington. Accessed January 26, 2021.
http://hdl.handle.net/10063/7727.
MLA Handbook (7th Edition):
Lim, Jonathan. “The Living Barrier: Residential architecture acting as a noise barrier near railway corridors.” 2018. Web. 26 Jan 2021.
Vancouver:
Lim J. The Living Barrier: Residential architecture acting as a noise barrier near railway corridors. [Internet] [Masters thesis]. Victoria University of Wellington; 2018. [cited 2021 Jan 26].
Available from: http://hdl.handle.net/10063/7727.
Council of Science Editors:
Lim J. The Living Barrier: Residential architecture acting as a noise barrier near railway corridors. [Masters Thesis]. Victoria University of Wellington; 2018. Available from: http://hdl.handle.net/10063/7727
Delft University of Technology
5.
YUAN, JIAN (author).
MixCity: Investigative Research & Evolutionary Design on Mixed Densification in Shanghai’s Living Neighbourhood.
Degree: 2020, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:bd729840-e726-4b68-9c8a-2eaa7c3ea51d
► The chapter first introduced the author’s motivation for this project. It shows the sprawl of monofunctional residential neighborhoods and the urgency to building more homes…
(more)
▼ The chapter first introduced the author’s motivation for this project. It shows the sprawl of monofunctional residential neighborhoods and the urgency to building more homes to accommodate the increasing population. In the problem statement, the author illustrated now the normal renovation mode of Lilong is to introduce monofunctional residential towers (Xiaoqu), and there are many issues like faceless urban pattern and poor walkability. The development is caused by profit, its is not sustainble for the city. For the research question, this chapter concludes “How to achieve sustainable living neighborhoods rather than introducing Xiaoqu in the old Lilong area by mixing in Shanghai’s densification Process?” To proceed with the research, it shows multiple methods to cope with research questions and defines possible research outcomes. For the methods, the author presents three main ways, including Spacemate, MXI, and parametric programming. Besides, he introduces a alignment table to show the inner connection among multiple research questions, methods, and outputs. In the end, he shows the conceptual framework and future steps of this project.
Architecture, Urbanism and Building Sciences | Urbanism
Advisors/Committee Members: Dijkstra, Rients (mentor), Hackauf, Ulf (graduation committee), Delft University of Technology (degree granting institution).
Subjects/Keywords: Urban Design; Densification; urban studies
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APA (6th Edition):
YUAN, J. (. (2020). MixCity: Investigative Research & Evolutionary Design on Mixed Densification in Shanghai’s Living Neighbourhood. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:bd729840-e726-4b68-9c8a-2eaa7c3ea51d
Chicago Manual of Style (16th Edition):
YUAN, JIAN (author). “MixCity: Investigative Research & Evolutionary Design on Mixed Densification in Shanghai’s Living Neighbourhood.” 2020. Masters Thesis, Delft University of Technology. Accessed January 26, 2021.
http://resolver.tudelft.nl/uuid:bd729840-e726-4b68-9c8a-2eaa7c3ea51d.
MLA Handbook (7th Edition):
YUAN, JIAN (author). “MixCity: Investigative Research & Evolutionary Design on Mixed Densification in Shanghai’s Living Neighbourhood.” 2020. Web. 26 Jan 2021.
Vancouver:
YUAN J(. MixCity: Investigative Research & Evolutionary Design on Mixed Densification in Shanghai’s Living Neighbourhood. [Internet] [Masters thesis]. Delft University of Technology; 2020. [cited 2021 Jan 26].
Available from: http://resolver.tudelft.nl/uuid:bd729840-e726-4b68-9c8a-2eaa7c3ea51d.
Council of Science Editors:
YUAN J(. MixCity: Investigative Research & Evolutionary Design on Mixed Densification in Shanghai’s Living Neighbourhood. [Masters Thesis]. Delft University of Technology; 2020. Available from: http://resolver.tudelft.nl/uuid:bd729840-e726-4b68-9c8a-2eaa7c3ea51d
Victoria University of Wellington
6.
Syme, Oliver.
Patterns of Consolidation.
Degree: 2017, Victoria University of Wellington
URL: http://hdl.handle.net/10063/6821
► This thesis uses design based research to meet the challenge of urban densification. It proposes an approach for higher density housing development that enhances livability,…
(more)
▼ This thesis uses design based research to meet the challenge of urban
densification. It proposes an approach for higher density housing development that enhances livability, achieves compactness and responds to a city’s unique landscape. To accommodate an increasing amount of people within the city, strategies and experimentation into the density of built form contributing to the urban fabric must be explored. The design based research addresses how improvements can be made upon an existing site through the reconfiguration of built form with an analysis into density, topography, existing natural ecologies and the key components fundamental to a successful urban and public realm.
Advisors/Committee Members: Thompson, Kerstin, Martinez Almoyna Gual, Carlos.
Subjects/Keywords: Urban densification; Ecology; Public realm; Housing
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APA (6th Edition):
Syme, O. (2017). Patterns of Consolidation. (Masters Thesis). Victoria University of Wellington. Retrieved from http://hdl.handle.net/10063/6821
Chicago Manual of Style (16th Edition):
Syme, Oliver. “Patterns of Consolidation.” 2017. Masters Thesis, Victoria University of Wellington. Accessed January 26, 2021.
http://hdl.handle.net/10063/6821.
MLA Handbook (7th Edition):
Syme, Oliver. “Patterns of Consolidation.” 2017. Web. 26 Jan 2021.
Vancouver:
Syme O. Patterns of Consolidation. [Internet] [Masters thesis]. Victoria University of Wellington; 2017. [cited 2021 Jan 26].
Available from: http://hdl.handle.net/10063/6821.
Council of Science Editors:
Syme O. Patterns of Consolidation. [Masters Thesis]. Victoria University of Wellington; 2017. Available from: http://hdl.handle.net/10063/6821
Queensland University of Technology
7.
Xu, Yanan.
Characterization of mechanical behaviour of TiO2 nanotube array.
Degree: 2016, Queensland University of Technology
URL: https://eprints.qut.edu.au/96480/
► This thesis presents a comprehensive investigation on mechanical behaviour of TiO2 nanotube arrays. Experimental investigation and numerical simulations have been carried out to understand the…
(more)
▼ This thesis presents a comprehensive investigation on mechanical behaviour of TiO2 nanotube arrays. Experimental investigation and numerical simulations have been carried out to understand the mechanical behaviour of single nanotube, micron-sized nanotube pillar and nanotube arrays. The deformation and failure mechanisms and their dependence on loading conditions are discussed. The outcomes of this work will be beneficial to future development of TiO2 nanotube arrays and other nanostructures.
Subjects/Keywords: nanoindentation; nanotube array; densification; nanoductility; strength
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APA (6th Edition):
Xu, Y. (2016). Characterization of mechanical behaviour of TiO2 nanotube array. (Thesis). Queensland University of Technology. Retrieved from https://eprints.qut.edu.au/96480/
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Xu, Yanan. “Characterization of mechanical behaviour of TiO2 nanotube array.” 2016. Thesis, Queensland University of Technology. Accessed January 26, 2021.
https://eprints.qut.edu.au/96480/.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Xu, Yanan. “Characterization of mechanical behaviour of TiO2 nanotube array.” 2016. Web. 26 Jan 2021.
Vancouver:
Xu Y. Characterization of mechanical behaviour of TiO2 nanotube array. [Internet] [Thesis]. Queensland University of Technology; 2016. [cited 2021 Jan 26].
Available from: https://eprints.qut.edu.au/96480/.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Xu Y. Characterization of mechanical behaviour of TiO2 nanotube array. [Thesis]. Queensland University of Technology; 2016. Available from: https://eprints.qut.edu.au/96480/
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Northeastern University
8.
Li, Yangfan.
Densification and bonding of copper and aluminum powders.
Degree: MS, Department of Mechanical and Industrial Engineering, 2012, Northeastern University
URL: http://hdl.handle.net/2047/d20002900
► Ultrasonic powder consolidation (UPC) is a novel rapid, full-density powder consolidation process in which metal powders confined in a die under uniaxial loading is subjected…
(more)
▼ Ultrasonic powder consolidation (UPC) is a novel rapid, full-density powder consolidation process in which metal powders confined in a die under uniaxial loading is subjected to ultrasonic vibration at low temperature for a few seconds or less. In this research, copper powders with dendritic and spherical morphologies and an aluminum powder with spherical morphology were subjected to UPC under various conditions to investigate the effects of the process variables on the densification and metallurgical bonding of the compact. An ultrasonic washing test, developed in this research, was used to determine the extent of densification and bonding achieved in specimens consolidated under systematically varied UPC conditions. Hardness testing was also employed as a supplementary means for the assessment of compact density in both as-consolidated and ultrasonically washed states. The degree of metallurgical bonding was also qualitatively assessed from the fracture surfaces of manually broken specimens.; With the dendritic and spherical copper powders, the minimum consolidation temperature, time and uniaxial pressure required for nearly full densification were determined to be 450 °C, 4 s and 84 MPa, respectively. The best conditions were 500 °C, 4 s and 100 MPa for both copper powders. Dendritic-powder specimens exhibited better densification and bonding than spherical-powder specimens above 450 °C. However, below 450 °C, the spherical powder produced better results, due probably to its higher packing geometry and repacking under the ultrasonic vibrations. With the spherical aluminum powder, specimens with best densification and bonding were obtained under the conditions of 400 °C, 2.5 s and 80 MPa.; Compact densification generally requires a good amount of powder deformation. In UPC, this occurs very quickly in a fraction of a second if consolidation temperature is sufficiently high. However, a high degree of compact densification does not necessarily assure good metallurgical bonding. Bonding must be preceded by the formation of nascent metal-to-metal contact of powder particles, which requires good compact densification. Thus, densification is only a necessary condition for bonding. For the copper compacts, metallurgical bonding, at a given temperature, increased with increasing consolidation time, indicating that bonding is a thermally activated (diffusional) process. Densification of dendritic powder produced more fresh metal surface and hence higher degrees of bonding. The bonding in the aluminum compacts, however, followed densification more closely, reflecting the higher homologuos temperatures (up to 0.72 of the melting point in K).
Subjects/Keywords: ultrasonic powder consolidation; densification; Mechanical Engineering; Metallurgy
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APA (6th Edition):
Li, Y. (2012). Densification and bonding of copper and aluminum powders. (Masters Thesis). Northeastern University. Retrieved from http://hdl.handle.net/2047/d20002900
Chicago Manual of Style (16th Edition):
Li, Yangfan. “Densification and bonding of copper and aluminum powders.” 2012. Masters Thesis, Northeastern University. Accessed January 26, 2021.
http://hdl.handle.net/2047/d20002900.
MLA Handbook (7th Edition):
Li, Yangfan. “Densification and bonding of copper and aluminum powders.” 2012. Web. 26 Jan 2021.
Vancouver:
Li Y. Densification and bonding of copper and aluminum powders. [Internet] [Masters thesis]. Northeastern University; 2012. [cited 2021 Jan 26].
Available from: http://hdl.handle.net/2047/d20002900.
Council of Science Editors:
Li Y. Densification and bonding of copper and aluminum powders. [Masters Thesis]. Northeastern University; 2012. Available from: http://hdl.handle.net/2047/d20002900
University of Colorado
9.
Olarte, Juan Carlos.
Influence of Ground Densification with Drainage Control on the Performance of Structures on Liquefiable Ground.
Degree: PhD, 2018, University of Colorado
URL: https://scholar.colorado.edu/cven_gradetds/167
► Significant progress has been made in recent years toward a better understanding of liquefaction and its consequences on structures. Several techniques have been developed…
(more)
▼ Significant progress has been made in recent years toward a better understanding of liquefaction and its consequences on structures. Several techniques have been developed to reduce the liquefaction hazard. Among these techniques,
densification is the most popular in practice, sometimes combined with a form of drainage control. Yet, the influence of ground
densification with or without drainage control on the performance of structures and the key mechanisms of soil-structure interaction remains poorly understood.
In this study, centrifuge experiments were designed and conducted at the University of Colorado Boulder’s 400 g-ton centrifuge facility to evaluate soil-foundation-structure interaction (SFSI) effects, considering 3- and 9-story structures placed on a layered liquefiable soil deposit. The response of these structures was first evaluated with and without ground
densification. Subsequently, a flexible impermeable latex barrier and prefabricated vertical drains (PVDs) were placed around the densified zone, to inhibit or enhance drainage.
The results show that ground
densification reduces the foundation settlement, but amplifies seismic demands on the superstructure, with potentially drastic consequences if not considered in design. The influence of
densification on foundation rotations was shown dependent on the properties of structure and ground motions.
Inhibiting flow around the densified area may be useful when confinement limits the pore pressure generation under the structure. This can lead to a reduction in foundation’s permanent rotation and the seismic demand transferred to the superstructure compared to the case involving only
densification. In cases when there is substantial excess pore pressures generated under the building, inhibiting flow can amplify the extent of softening, particularly near the edges of the structure, increasing its permanent foundation rotation and demand on the superstructure through rocking. In contrast, enhancing drainage around the densified zone notably reduced permanent foundation settlement and rotation, but amplified foundation accelerations, leading to additional seismic demands on the structure which should be considered in structure’s design.
The results presented in this dissertation point to the importance of considering the structure’s dynamic properties and force-deformation behavior, as well as foundation and ground motion properties, when designing mitigation techniques, with the goal of improving the performance of the system holistically.
Advisors/Committee Members: Shideh Dashti, Abbie B. Liel, Benjamin Mason, Yida Zhang, Petros Sideris.
Subjects/Keywords: liquefaction; densification; soil; flow; ground motion; Engineering
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APA (6th Edition):
Olarte, J. C. (2018). Influence of Ground Densification with Drainage Control on the Performance of Structures on Liquefiable Ground. (Doctoral Dissertation). University of Colorado. Retrieved from https://scholar.colorado.edu/cven_gradetds/167
Chicago Manual of Style (16th Edition):
Olarte, Juan Carlos. “Influence of Ground Densification with Drainage Control on the Performance of Structures on Liquefiable Ground.” 2018. Doctoral Dissertation, University of Colorado. Accessed January 26, 2021.
https://scholar.colorado.edu/cven_gradetds/167.
MLA Handbook (7th Edition):
Olarte, Juan Carlos. “Influence of Ground Densification with Drainage Control on the Performance of Structures on Liquefiable Ground.” 2018. Web. 26 Jan 2021.
Vancouver:
Olarte JC. Influence of Ground Densification with Drainage Control on the Performance of Structures on Liquefiable Ground. [Internet] [Doctoral dissertation]. University of Colorado; 2018. [cited 2021 Jan 26].
Available from: https://scholar.colorado.edu/cven_gradetds/167.
Council of Science Editors:
Olarte JC. Influence of Ground Densification with Drainage Control on the Performance of Structures on Liquefiable Ground. [Doctoral Dissertation]. University of Colorado; 2018. Available from: https://scholar.colorado.edu/cven_gradetds/167
Delft University of Technology
10.
Sukel, D.R. (author).
Metropolis Amsterdam: Towards a Metropolitan condition in the Randstad.
Degree: 2016, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:157af55a-204d-4403-bbbf-e33047cff689
► All over the world cities are growing, one of the positions towards dealing with this growth is that it should be realized mostly by densifying…
(more)
▼ All over the world cities are growing, one of the positions towards dealing with this growth is that it should be realized mostly by densifying the existing fabric and realizing a high density in new developments. This trend makes considerations on the relationship of density and the architectural form, the consequences high density has on the residents and dwellings, and the relationship between the dwelling, the building and the urban fabric and the public realm ever more actual. The city of Amsterdam is one of those cities which find itself dealing with growth and has taken on the approach of densifying designated inner city areas. One of the inner city locations which is suitable for inner city densification is the neighborhood of Kattenburg and the adjacent Marineterrein. It is within this context that Metropolis Amsterdam proposes a dense inner city environment which offers qualitative living for both the residents and the city. The project aims to provide a durable fabric for unknown future developments which as such continuous to provide scale, unity and readability through its formal expression. The formal expression together with the functions of the building create an Metropolitan environment which offers a diverse range of amenities and residences within the limited footprint of the building.
Architecture and The Built Environment
Architecture & Dwelling
Dutch Housing Studio
Advisors/Committee Members: Kupers, T.W. (mentor), Van der Putt, P.S. (mentor), Groenewold, S.C. (mentor).
Subjects/Keywords: Densification; Dwelling; Form; Metropolitan; Mixed Use
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APA (6th Edition):
Sukel, D. R. (. (2016). Metropolis Amsterdam: Towards a Metropolitan condition in the Randstad. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:157af55a-204d-4403-bbbf-e33047cff689
Chicago Manual of Style (16th Edition):
Sukel, D R (author). “Metropolis Amsterdam: Towards a Metropolitan condition in the Randstad.” 2016. Masters Thesis, Delft University of Technology. Accessed January 26, 2021.
http://resolver.tudelft.nl/uuid:157af55a-204d-4403-bbbf-e33047cff689.
MLA Handbook (7th Edition):
Sukel, D R (author). “Metropolis Amsterdam: Towards a Metropolitan condition in the Randstad.” 2016. Web. 26 Jan 2021.
Vancouver:
Sukel DR(. Metropolis Amsterdam: Towards a Metropolitan condition in the Randstad. [Internet] [Masters thesis]. Delft University of Technology; 2016. [cited 2021 Jan 26].
Available from: http://resolver.tudelft.nl/uuid:157af55a-204d-4403-bbbf-e33047cff689.
Council of Science Editors:
Sukel DR(. Metropolis Amsterdam: Towards a Metropolitan condition in the Randstad. [Masters Thesis]. Delft University of Technology; 2016. Available from: http://resolver.tudelft.nl/uuid:157af55a-204d-4403-bbbf-e33047cff689
Delft University of Technology
11.
Churchill, C. (author).
'Infill vs Sprawl' Infill as a sustainable density.
Degree: 2014, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:b6a020aa-942c-4f79-bed6-131494d5b34b
► Urban sprawl is a contemporary issue facing not only newly developed nations and cities but many countries in Europe with historically dense urban cores, including…
(more)
▼ Urban sprawl is a contemporary issue facing not only newly developed nations and cities but many countries in Europe with historically dense urban cores, including Amsterdam. Urban city dwellers are desiring the the convenience of city life coupled with the qualities of suburbia and having ones own backyard. In the context of Amsterdam the aim was to find a new housing typology in response to a changing demographic and lifestyle desires. At the scale of the masterplan the blocks are invigorated with activity nodes functioning as a combination of private, semi-private and public spaces linked via a series of connecting streets. At the scale of the dwelling an open structure allows growth and adaptability of use over time. Densification through collectivity was explored enabling real contact with neighbours, the resolution of urban frictions and a sustainable development.
At Home in the City, Amsterdam
Architecture and Dwelling
Architecture and The Built Environment
Advisors/Committee Members: Jürgenhake, B. (mentor), Cuperus, Y.J. (mentor), Klijn, O. (mentor).
Subjects/Keywords: collective housing; dwelling; densification; open structure
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APA (6th Edition):
Churchill, C. (. (2014). 'Infill vs Sprawl' Infill as a sustainable density. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:b6a020aa-942c-4f79-bed6-131494d5b34b
Chicago Manual of Style (16th Edition):
Churchill, C (author). “'Infill vs Sprawl' Infill as a sustainable density.” 2014. Masters Thesis, Delft University of Technology. Accessed January 26, 2021.
http://resolver.tudelft.nl/uuid:b6a020aa-942c-4f79-bed6-131494d5b34b.
MLA Handbook (7th Edition):
Churchill, C (author). “'Infill vs Sprawl' Infill as a sustainable density.” 2014. Web. 26 Jan 2021.
Vancouver:
Churchill C(. 'Infill vs Sprawl' Infill as a sustainable density. [Internet] [Masters thesis]. Delft University of Technology; 2014. [cited 2021 Jan 26].
Available from: http://resolver.tudelft.nl/uuid:b6a020aa-942c-4f79-bed6-131494d5b34b.
Council of Science Editors:
Churchill C(. 'Infill vs Sprawl' Infill as a sustainable density. [Masters Thesis]. Delft University of Technology; 2014. Available from: http://resolver.tudelft.nl/uuid:b6a020aa-942c-4f79-bed6-131494d5b34b
Delft University of Technology
12.
Leeferink, T. (author).
Slumify: Qualify Informal Urban Densification.
Degree: 2016, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:7fdf8586-6679-48fa-8eff-fa246d7ff2c6
► It is important to reconfigure the way of thinking about urban slums. Instead of being considered a major urban problem in third world countries, one…
(more)
▼ It is important to reconfigure the way of thinking about urban slums. Instead of being considered a major urban problem in third world countries, one needs to realise their essential role in the continual functioning and growth of the nation’s economy. This thesis, through research and design aims at qualifying slum environments and architectural interventions within said slums. The research dealt with the idea of qualifying informal urban densification in order to formulate a base for meaningful slum upgrade processes. The design process undertakes systemic design thinking in order to propose a system of upgrade which will generate an informal economy whilst providing skill transfer and education to the community, thereby increasing the capacity of the people.
Architecture and The Built Environment
Explore Lab
Advisors/Committee Members: Ravon, A.B.O. (mentor), Smits, M.W.M. (mentor), Cuperus, Y.J. (mentor).
Subjects/Keywords: urban slums; densification; factory; capacity; upgrade
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APA (6th Edition):
Leeferink, T. (. (2016). Slumify: Qualify Informal Urban Densification. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:7fdf8586-6679-48fa-8eff-fa246d7ff2c6
Chicago Manual of Style (16th Edition):
Leeferink, T (author). “Slumify: Qualify Informal Urban Densification.” 2016. Masters Thesis, Delft University of Technology. Accessed January 26, 2021.
http://resolver.tudelft.nl/uuid:7fdf8586-6679-48fa-8eff-fa246d7ff2c6.
MLA Handbook (7th Edition):
Leeferink, T (author). “Slumify: Qualify Informal Urban Densification.” 2016. Web. 26 Jan 2021.
Vancouver:
Leeferink T(. Slumify: Qualify Informal Urban Densification. [Internet] [Masters thesis]. Delft University of Technology; 2016. [cited 2021 Jan 26].
Available from: http://resolver.tudelft.nl/uuid:7fdf8586-6679-48fa-8eff-fa246d7ff2c6.
Council of Science Editors:
Leeferink T(. Slumify: Qualify Informal Urban Densification. [Masters Thesis]. Delft University of Technology; 2016. Available from: http://resolver.tudelft.nl/uuid:7fdf8586-6679-48fa-8eff-fa246d7ff2c6
Delft University of Technology
13.
De Vries, O. (author).
Densification of Amsterdam.
Degree: 2016, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:bd012e90-4b12-404c-a9ff-209fc33a79df
► Amsterdam is growing fast, faster than the rest of the Netherlands. This leads to many challenges such as housing shortage and high pressure on space…
(more)
▼ Amsterdam is growing fast, faster than the rest of the Netherlands. This leads to many challenges such as housing shortage and high pressure on space and amenities. For its competitiveness it important that Amsterdam keeps developing. However, it is often considered to be full. This study will show that there is a lot of space unused in the city, and that by densification Amsterdam can be more attractive. It concludes that the agglomeration of Amsterdam has the potential to grow within its borders to an urban structure of 1.4 million inhabitants. The paradox of the compact city states that densification creates often benefits on the large scale, but negative effects on the small scale. This study will show how the densification can be implemented in a good way and how it can contribute to the quality of life. Quality of life is an important part of a city's competitiveness, therefore this study will deal with the spatial measures that are needed to achieve both. The final goal is to show how densification can improve the quality of life and competitiveness of Amsterdam, to create an even more vibrant city where people love to live and work.
Architecture and The Built Environment
Urbanism
Advisors/Committee Members: Zonneveld, W.A.M. (mentor), Stolk, E.H. (mentor).
Subjects/Keywords: densification; quality of life; competiveness; Amsterdam
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APA (6th Edition):
De Vries, O. (. (2016). Densification of Amsterdam. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:bd012e90-4b12-404c-a9ff-209fc33a79df
Chicago Manual of Style (16th Edition):
De Vries, O (author). “Densification of Amsterdam.” 2016. Masters Thesis, Delft University of Technology. Accessed January 26, 2021.
http://resolver.tudelft.nl/uuid:bd012e90-4b12-404c-a9ff-209fc33a79df.
MLA Handbook (7th Edition):
De Vries, O (author). “Densification of Amsterdam.” 2016. Web. 26 Jan 2021.
Vancouver:
De Vries O(. Densification of Amsterdam. [Internet] [Masters thesis]. Delft University of Technology; 2016. [cited 2021 Jan 26].
Available from: http://resolver.tudelft.nl/uuid:bd012e90-4b12-404c-a9ff-209fc33a79df.
Council of Science Editors:
De Vries O(. Densification of Amsterdam. [Masters Thesis]. Delft University of Technology; 2016. Available from: http://resolver.tudelft.nl/uuid:bd012e90-4b12-404c-a9ff-209fc33a79df
Victoria University of Wellington
14.
Timoteo, Eleni.
Depth & Confinement, from Tokelau to Hataitai.
Degree: 2020, Victoria University of Wellington
URL: http://hdl.handle.net/10063/9201
► Western education systems have always over-shadowed my Tokelauan heritage. Through my tertiary education, I have found architecture to be a predominantly Western profession that has…
(more)
▼ Western education systems have always over-shadowed my Tokelauan heritage. Through my tertiary education, I have found architecture to be a predominantly Western profession that has struggled to integrate South Pacific values.
I wonder how Tokelauan knowledge and values might contribute to Western architecture - particularly in suburbs like Hataitai.
I have used the redesign of a primary school campus - a mini-city of sorts - to explore how Tokelau culture might inform an approach to density and community. Through design-led experimentation, I have discovered a set of spatial techniques that mediate between depth and confinement. These include: layering inwards from the building envelope, overlapping layers of tactile boundaries, and softening the perimeter edge. While these techniques are rooted in Tokelau culture, they are also utterly relevant to dense urban living in Wellington.
Advisors/Committee Members: Kebbell , Sam.
Subjects/Keywords: Architecture; Densification; Tokelau; Polynesian Vā; Architectural Layering
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APA (6th Edition):
Timoteo, E. (2020). Depth & Confinement, from Tokelau to Hataitai. (Masters Thesis). Victoria University of Wellington. Retrieved from http://hdl.handle.net/10063/9201
Chicago Manual of Style (16th Edition):
Timoteo, Eleni. “Depth & Confinement, from Tokelau to Hataitai.” 2020. Masters Thesis, Victoria University of Wellington. Accessed January 26, 2021.
http://hdl.handle.net/10063/9201.
MLA Handbook (7th Edition):
Timoteo, Eleni. “Depth & Confinement, from Tokelau to Hataitai.” 2020. Web. 26 Jan 2021.
Vancouver:
Timoteo E. Depth & Confinement, from Tokelau to Hataitai. [Internet] [Masters thesis]. Victoria University of Wellington; 2020. [cited 2021 Jan 26].
Available from: http://hdl.handle.net/10063/9201.
Council of Science Editors:
Timoteo E. Depth & Confinement, from Tokelau to Hataitai. [Masters Thesis]. Victoria University of Wellington; 2020. Available from: http://hdl.handle.net/10063/9201
Georgia Tech
15.
Hostetler, Ronald E.
A study of the diffusion into and adsorption of polyethylenimine onto silica gel.
Degree: PhD, Institute of Paper Science and Technology, 1973, Georgia Tech
URL: http://hdl.handle.net/1853/5545
Subjects/Keywords: Diffusion; Blast densification
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APA (6th Edition):
Hostetler, R. E. (1973). A study of the diffusion into and adsorption of polyethylenimine onto silica gel. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/5545
Chicago Manual of Style (16th Edition):
Hostetler, Ronald E. “A study of the diffusion into and adsorption of polyethylenimine onto silica gel.” 1973. Doctoral Dissertation, Georgia Tech. Accessed January 26, 2021.
http://hdl.handle.net/1853/5545.
MLA Handbook (7th Edition):
Hostetler, Ronald E. “A study of the diffusion into and adsorption of polyethylenimine onto silica gel.” 1973. Web. 26 Jan 2021.
Vancouver:
Hostetler RE. A study of the diffusion into and adsorption of polyethylenimine onto silica gel. [Internet] [Doctoral dissertation]. Georgia Tech; 1973. [cited 2021 Jan 26].
Available from: http://hdl.handle.net/1853/5545.
Council of Science Editors:
Hostetler RE. A study of the diffusion into and adsorption of polyethylenimine onto silica gel. [Doctoral Dissertation]. Georgia Tech; 1973. Available from: http://hdl.handle.net/1853/5545
University of Cincinnati
16.
Errico, Caroline S.
Dense-City:Intensification of Manhattan's 14th
Street.
Degree: M. Arch., Design, Architecture, Art and Planning:
Architecture, 2020, University of Cincinnati
URL: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1583854658893149
► New York City, like so many great metropolises across the world, faces a great dilemma: as the demand for living there increases, it becomes all…
(more)
▼ New York City, like so many great metropolises across
the world, faces a great dilemma: as the demand for living there
increases, it becomes all but impossible to afford that dream.
Storefronts in Manhattan sit vacant as the population has begun to
abandon the city for smaller and more reasonably priced markets.
Much of the quirky eclecticism that the city is known for is being
priced out, moved to far reaching corners of the outer boroughs,
and replaced with large franchises and multi-million dollar
apartments for the 1%. Manhattan is becoming generic and overly
homogenized. The city stands at the brink of losing its identity
and needs to adapt to survive.
Advisors/Committee Members: Riorden, Elizabeth (Committee Chair).
Subjects/Keywords: Architecture; New York City; Streetscape; Urbanism; Densification
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APA (6th Edition):
Errico, C. S. (2020). Dense-City:Intensification of Manhattan's 14th
Street. (Masters Thesis). University of Cincinnati. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=ucin1583854658893149
Chicago Manual of Style (16th Edition):
Errico, Caroline S. “Dense-City:Intensification of Manhattan's 14th
Street.” 2020. Masters Thesis, University of Cincinnati. Accessed January 26, 2021.
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1583854658893149.
MLA Handbook (7th Edition):
Errico, Caroline S. “Dense-City:Intensification of Manhattan's 14th
Street.” 2020. Web. 26 Jan 2021.
Vancouver:
Errico CS. Dense-City:Intensification of Manhattan's 14th
Street. [Internet] [Masters thesis]. University of Cincinnati; 2020. [cited 2021 Jan 26].
Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1583854658893149.
Council of Science Editors:
Errico CS. Dense-City:Intensification of Manhattan's 14th
Street. [Masters Thesis]. University of Cincinnati; 2020. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1583854658893149
Oklahoma State University
17.
Sarkar, Madhura.
Effects of Torrefaction and Densification on Devolatilization Kinetics and Gasification Performance of Switchgrass.
Degree: Biosystems & Agricultural Engineering, 2013, Oklahoma State University
URL: http://hdl.handle.net/11244/15102
► The overall goal of this research was to investigate effects of pretreatments (torrefaction at 230 and 270°C, densification, and combined torrefaction and densification) on biomass…
(more)
▼ The overall goal of this research was to investigate effects of pretreatments (torrefaction at 230 and 270°C,
densification, and combined torrefaction and
densification) on biomass properties, devolatilization kinetics and gasification performance of switchgrass. Devolatilization kinetics was determined at three heating rates (10, 30 and 50°C min-1) in inert (nitrogen) and oxidizing (air) atmospheres using a thermogravimetric analyzer. Gasification performance were evaluated at three gasification temperatures (700, 800 and 900°C) using an externally-heated fixed&ndashbed reactor with air at an equivalence ratio (ER) of 0.3. Devolatilization study showed that switchgrass torrefied at 270°C had the highest carbon (C) and the lowest hydrogen (H) and oxygen (O) contents (59.16, 4.67, and 34.53% d.b., respectively). This resulted in the lowest atomic O/C (0.44) and H/C (0.95) ratios and the highest higher heating value (27.11 MJ kg-1, d.b.). Combined torrefaction and
densification of switchgrass resulted in the least volatile and the highest ash and fixed carbon contents (62.63, 5.91, and 31.45% d.b., respectively). Combined torrefied and densified switchgrass had the highest rate of devolatilization in both atmospheres as evidenced by the largest rate of weight loss peaks (34 and 44 mg min-1 in inert and oxidizing atmospheres, respectively), the lowest start and end temperatures of the rate of weight loss peak (250-300 and 230-310�C in inert and oxidizing atmospheres, respectively). Gasification study showed that bulk density of combined torrefied and densified switchgrass was the highest (598.17 kg m-3, d.b.) requiring less space to store and transport. Pretreatments of switchgrass and gasification temperatures had significant effects on gasification performance. Among all pretreatments, gasification of combined torrefied and densified switchgrass resulted in the highest yields of H2 (0.03 kg/kg biomass) and CO (0.71 kg/kg biomass), highest syngas LHV (4.97 MJ Nm-3), CCE (90.56%), and CGE (68.69%) at the gasification temperature of 900°C, which show that combined torrefaction and
densification significantly improved gasification performance of switchgrass.
Advisors/Committee Members: Kumar, Ajay (advisor), Patil, Krushna N. (committee member), Bellmer, Danielle D. (committee member).
Subjects/Keywords: densification; devolatilization; gasification; kinetics; switchgrass; torrefaction
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APA (6th Edition):
Sarkar, M. (2013). Effects of Torrefaction and Densification on Devolatilization Kinetics and Gasification Performance of Switchgrass. (Thesis). Oklahoma State University. Retrieved from http://hdl.handle.net/11244/15102
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Sarkar, Madhura. “Effects of Torrefaction and Densification on Devolatilization Kinetics and Gasification Performance of Switchgrass.” 2013. Thesis, Oklahoma State University. Accessed January 26, 2021.
http://hdl.handle.net/11244/15102.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Sarkar, Madhura. “Effects of Torrefaction and Densification on Devolatilization Kinetics and Gasification Performance of Switchgrass.” 2013. Web. 26 Jan 2021.
Vancouver:
Sarkar M. Effects of Torrefaction and Densification on Devolatilization Kinetics and Gasification Performance of Switchgrass. [Internet] [Thesis]. Oklahoma State University; 2013. [cited 2021 Jan 26].
Available from: http://hdl.handle.net/11244/15102.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Sarkar M. Effects of Torrefaction and Densification on Devolatilization Kinetics and Gasification Performance of Switchgrass. [Thesis]. Oklahoma State University; 2013. Available from: http://hdl.handle.net/11244/15102
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
18.
Bonnet, Loïck.
Elaboration par frittage réactif de céramiques monolithiques et composites à base de grenat d'yttrium et d'aluminium : Etude des relations entre microstructures et propriétés optiques : Elaboration of yttrium and aluminum garnets-based monolithic and composite ceramics by reactive-sintering : Study of relations between microstructures.
Degree: Docteur es, Matériaux Céramiques et Traitements de Surface, 2017, Limoges
URL: http://www.theses.fr/2017LIMO0096
► Ce travail porte sur l’élaboration de céramiques transparentes composites à base de grenats d’yttrium et d’aluminium (Nd:YAG) avec différents ratios stœchiométriques (Nd+Y)/Al compris entre 0,40…
(more)
▼ Ce travail porte sur l’élaboration de céramiques transparentes composites à base de grenats d’yttrium et d’aluminium (Nd:YAG) avec différents ratios stœchiométriques (Nd+Y)/Al compris entre 0,40 et 0,70, autour du ratio correspondant à la composition stœchiométrique du Nd:YAG ((Nd+Y)/Al = 0,6000) par frittage-réaction sous vide. La mise en forme a été effectué par coulage sous pression de suspensions stables et homogènes de mélanges Al2O3-Y2O3-Nd2O3. L’étude des propriétés microstructurales, thermiques et optiques de ces céramiques a permis de mettre en évidence l’influence du ratio (Nd+Y)/Al sur les cinétiques de formation de la phase grenat et de densification du matériau ainsi que sur leurs propriétés optiques. Ainsi, il apparaît que pour des céramiques avec un ratio supérieur à 0,6000, correspondant à un matériau enrichi en yttrium, les cinétiques précédemment évoquées sont diminuées mais les propriétés de transparence et lasers apparaissent moins dégradées, contrairement au cas de céramiques enrichies en aluminium ((Nd+Y)/Al < 0,6000). De plus, l’étude de mélanges pulvérulents Nd:YAP-Al2O3 a permis de mettre en évidence un mécanisme de formation de la phase Nd:YAG suggérant l’existence d’une réaction solide-gaz avec évaporation-condensation de la phase réactive aluminée. Enfin, la faisabilité de céramiques de Nd:YAG à haut taux de dopage (4 % at.) a permis de montrer l’intérêt de ces matériaux dans la génération de propriétés optiques non linéaires du troisième ordre, particulièrement le phénomène d’autofocalisation de faisceaux lumineux par effet Kerr.
This work is devoted to the elaboration of yttrium and aluminum garnets-based transparent composite ceramics with different (Nd+Y)/Al stoichiometric ratios ranged from 0.40 to 0.70, around the ratio corresponding to the Nd:YAG stoichiometric composition ((Nd+Y)/Al = 0.6000) by under-vacuum reactive-sintering. Pressure-casting of stable and homogeneous suspensions of mixing Al2O3-Y2O3-Nd2O3 was achieved. Study of microstructural, thermal and optical properties of these ceramics has made it possible to highlight the influence of (Nd+Y)/Al ratio on garnet phase formation and densification kinetics, and on optical properties. Thus, it appears that for ceramic with a ratio higher than 0.6000, corresponding to an yttrium-rich sample, the previously mentioned kinetics are decreased but transparence and lasers properties are less degraded, contrary to aluminum-rich ceramics ((Nd+Y)/Al < 0.6000). Moreover, study of Nd:YAP-Al2O3 powders mixing brings out Nd:YAG phase formation mechanism, suggesting the existence of solid-gas reaction with evaporation-condensation of aluminum-rich reactive phase. Finally, feasibility of Nd:YAG ceramics with high dopant content (4 at. %) has shown the interest of these materials in order to generate third-order nonlinear optical properties, especially self-focusing phenomenon of light beams by Kerr effect.
Advisors/Committee Members: Maître, Alexandre (thesis director), Couderc, Vincent (thesis director), Boulesteix, Rémy (thesis director).
Subjects/Keywords: Céramiques transparentes; Cinétiques de densification; Nd:YAG; Transparent ceramics; Densification kinetics; Nd:YAG; 620.14
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Manager
APA (6th Edition):
Bonnet, L. (2017). Elaboration par frittage réactif de céramiques monolithiques et composites à base de grenat d'yttrium et d'aluminium : Etude des relations entre microstructures et propriétés optiques : Elaboration of yttrium and aluminum garnets-based monolithic and composite ceramics by reactive-sintering : Study of relations between microstructures. (Doctoral Dissertation). Limoges. Retrieved from http://www.theses.fr/2017LIMO0096
Chicago Manual of Style (16th Edition):
Bonnet, Loïck. “Elaboration par frittage réactif de céramiques monolithiques et composites à base de grenat d'yttrium et d'aluminium : Etude des relations entre microstructures et propriétés optiques : Elaboration of yttrium and aluminum garnets-based monolithic and composite ceramics by reactive-sintering : Study of relations between microstructures.” 2017. Doctoral Dissertation, Limoges. Accessed January 26, 2021.
http://www.theses.fr/2017LIMO0096.
MLA Handbook (7th Edition):
Bonnet, Loïck. “Elaboration par frittage réactif de céramiques monolithiques et composites à base de grenat d'yttrium et d'aluminium : Etude des relations entre microstructures et propriétés optiques : Elaboration of yttrium and aluminum garnets-based monolithic and composite ceramics by reactive-sintering : Study of relations between microstructures.” 2017. Web. 26 Jan 2021.
Vancouver:
Bonnet L. Elaboration par frittage réactif de céramiques monolithiques et composites à base de grenat d'yttrium et d'aluminium : Etude des relations entre microstructures et propriétés optiques : Elaboration of yttrium and aluminum garnets-based monolithic and composite ceramics by reactive-sintering : Study of relations between microstructures. [Internet] [Doctoral dissertation]. Limoges; 2017. [cited 2021 Jan 26].
Available from: http://www.theses.fr/2017LIMO0096.
Council of Science Editors:
Bonnet L. Elaboration par frittage réactif de céramiques monolithiques et composites à base de grenat d'yttrium et d'aluminium : Etude des relations entre microstructures et propriétés optiques : Elaboration of yttrium and aluminum garnets-based monolithic and composite ceramics by reactive-sintering : Study of relations between microstructures. [Doctoral Dissertation]. Limoges; 2017. Available from: http://www.theses.fr/2017LIMO0096
19.
Meng, Ji Xing.
Contribution to the modeling of densification in silicate glasses under very high pressures : Contribution à la modélisation de la densification des verres silicatés sous très hautes pressions.
Degree: Docteur es, Mécanique, 2013, Rennes 1
URL: http://www.theses.fr/2013REN1S116
► Le comportement à haute pression du verre de silice a été largement étudié dansde différents domaines pour ses propriétés mécanique et physiques, tels que la…
(more)
▼ Le comportement à haute pression du verre de silice a été largement étudié dansde différents domaines pour ses propriétés mécanique et physiques, tels que la mécaniquenon-linéaire, laphysiquede haute pression, laphysiquenon-cristallins, laphysique appliquée, lagéophysique, etc. La densification permanente est la propriété la plus fondamentale obtenue à partir de la haute pression. Nous discutons un modèle constitutif décrivant le mécanisme de déformation permanente par la densification sous haute pressionde verre de silice. La loi de comportement proposée dans cette étude considère que la pression est hydrostatique pure. Elle est composée d’une partieélastique et d’autre partie un écoulement décrivant l'évolution des déformations permanentes après l’initiation de ladensification. Dans cette loi, trois critères d’écrouissage sont discutés à l'égard de la dépendance de la densification incrémentale (progressive)aux niveaux de contraintes appliquées. Les mesuresexpérimentales ex-situ et in-situ sont utilisées pour évaluer notre modèle. En misant en œuvre de notre modèle dans Abaqus et SiDoLo(corotational logiciel), l’analyse inverse est utilisée pour déterminer le seuil de la pression de densification, la pression à la saturation et le taux de densification saturée. Les calculs numériques montrent un excellent accord avec les données expérimentales. Il est à noter que notre modèle non seulement réussit à déterminer les propriétés de densification, mais aussi pour prédire les changements de propriétés élastiques, telles que le module de compressibilité, le module de cisaillement, module d’élasticité et le coefficient de Poisson, sous la pression hydrostatique. Dans les perspectives, notre modèle fournit une nouvelle loi pour analyser le comportement à la déformation de silice sous l’état de contraintes complexes.
High-pressure behavior of SiO2 glass has been studied extensively because it has attracted considerable attention in various fields of mechanical and physical sciences, such as non-linear mechanics, high-pressure physics, noncrystalline physics, applied physics, geophysics, etc. Permanent densification is the most fundamental property obtained from very high pressure. We discuss a constitutive model describing the permanent densification induced deformation mechanism of silica. The constitutive law is assumed to be pure hydrostatic pressure, and uses a yield function and a flow rule describing the evolution of permanent strains after initial densification, and three hardening rules discussing the dependence of the incremental densification on the levels of applied stresses. Ex-situ and in-situ experiments are both considered to evaluate our model. Implementing our model to a finite software Abaqus and a corotational framework software SiDoLo, inverse analysis is used to determine the threshold densification pressure, the saturate densification pressure and the saturate value of densification. Numerical results show an excellent agreement to experimental data. It should be noted that our model not only…
Advisors/Committee Members: Keryvin, Vincent (thesis director), Guin, Jean-Pierre (thesis director), Pilvin, Philippe (thesis director).
Subjects/Keywords: Mécanique; Verre; Densification; Pression; Modélisation; Silice; Mechanics Silica; Glass; Densification; Pressure; Modeling; Silica
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APA (6th Edition):
Meng, J. X. (2013). Contribution to the modeling of densification in silicate glasses under very high pressures : Contribution à la modélisation de la densification des verres silicatés sous très hautes pressions. (Doctoral Dissertation). Rennes 1. Retrieved from http://www.theses.fr/2013REN1S116
Chicago Manual of Style (16th Edition):
Meng, Ji Xing. “Contribution to the modeling of densification in silicate glasses under very high pressures : Contribution à la modélisation de la densification des verres silicatés sous très hautes pressions.” 2013. Doctoral Dissertation, Rennes 1. Accessed January 26, 2021.
http://www.theses.fr/2013REN1S116.
MLA Handbook (7th Edition):
Meng, Ji Xing. “Contribution to the modeling of densification in silicate glasses under very high pressures : Contribution à la modélisation de la densification des verres silicatés sous très hautes pressions.” 2013. Web. 26 Jan 2021.
Vancouver:
Meng JX. Contribution to the modeling of densification in silicate glasses under very high pressures : Contribution à la modélisation de la densification des verres silicatés sous très hautes pressions. [Internet] [Doctoral dissertation]. Rennes 1; 2013. [cited 2021 Jan 26].
Available from: http://www.theses.fr/2013REN1S116.
Council of Science Editors:
Meng JX. Contribution to the modeling of densification in silicate glasses under very high pressures : Contribution à la modélisation de la densification des verres silicatés sous très hautes pressions. [Doctoral Dissertation]. Rennes 1; 2013. Available from: http://www.theses.fr/2013REN1S116
20.
Bréant, Camille.
Variabilité régionale de la densification de la neige polaire lors des grandes transitions climatiques : Regional variability of polar snow densification during large climatic transitions.
Degree: Docteur es, Océan, atmosphère, climat et observations spatiales, 2017, Université Paris-Saclay (ComUE)
URL: http://www.theses.fr/2017SACLV104
► Le déphasage entre augmentation de température et augmentation de gaz à effet de serre (GES) dans l'atmosphère lors des grandes transitions climatiques passées est estimé…
(more)
▼ Le déphasage entre augmentation de température et augmentation de gaz à effet de serre (GES) dans l'atmosphère lors des grandes transitions climatiques passées est estimé grâce aux mesures effectuées dans les carottes de glace polaires dans la phase glace pour la température et dans la phase gaz (bulles d’air piégées) pour la concentration en GES. Ce déphasage est encore mal contraint et, pour résoudre ce problème, il est nécessaire de mieux comprendre le processus mécanique de transformation de neige en glace près de la surface de la calotte (centaine de mètres supérieurs, le névé). En l'absence de fusion, la transformation de la neige (matériau à porosité ouverte en contact avec l'atmosphère) en glace (matériau contenant des bulles d'air isolées) s'effectue progressivement sous l'action des gradients de température près de la surface, puis sous l'action du poids des couches de neige situées au-dessus. Selon les conditions de température et précipitation, ce processus peut prendre quelques décennies à plusieurs millénaires et s'étend sur une centaine de mètres de profondeur. Il contrôle la différence d'âge entre la glace et les gaz qu'elle renferme. La prédiction de la profondeur de piégeage des gaz représente un enjeu majeur pour la paléoclimatologie en particulier sur la séquence des changements relatifs de température et de concentration en gaz à effet de serre.Un modèle thermo-mécanique de
densification de la neige a été conçu et développé au LGGE en intégrant la formulation des processus mécaniques, des propriétés thermiques, et des critères de piégeage des gaz. Les performances de ce modèle peuvent être testées et améliorées grâce à des études de structure de névés actuels (densité, rapport porosité ouverte/fermée, …). Pour les périodes plus anciennes, des mesures d’isotopes des gaz inertes d15N et d40Ar) dans l’air piégé dans les carottes de glace polaire permettent d’obtenir des informations directes sur les variations passées de la structure du névé (e.g. épaisseur de la zone diffusive). Les larges divergences observées en Antarctique entre les sorties de modèle de
densification et les mesures isotopiques de gaz piégé dans la glace génèrent une grande incertitude sur les reconstructions climatiques passées et comprendre ce désaccord est un défi majeur de la paleoclimatologie actuelle.Dans le cadre de cette thèse, nous avons pris en compte les influences de la dépendance à la température des énergies d'activation et des impuretés (poussières) sur la vitesse de
densification. Cela a permis de concilier les données et le modèle. Les résultats du modèle modifié sont globalement cohérents avec les profils de densité mesurés pour des névés actuels et les données d'isotopes de gaz inertes pour les déglaciations (aussi appelées terminaisons). Nous avons également présenté de nouvelles mesures à haute résolution de d15N et d40Ar pour les terminaisons 2 (129-138ka) et 3 (243-251ka) des carottes antarctiques de Dôme C et Vostok. Nous avons montré que les différentes évolutions de d15N entre les différents sites et…
Advisors/Committee Members: Landais, Amaëlle (thesis director), Martinerie, Patricia (thesis director).
Subjects/Keywords: Densification; Névé; Modèle thermo-Dynamique; Isotopes; Antarctique; Densification; Firn; Thermo-Mechanical model; Isotopes; Antarctic; 551.6
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Manager
APA (6th Edition):
Bréant, C. (2017). Variabilité régionale de la densification de la neige polaire lors des grandes transitions climatiques : Regional variability of polar snow densification during large climatic transitions. (Doctoral Dissertation). Université Paris-Saclay (ComUE). Retrieved from http://www.theses.fr/2017SACLV104
Chicago Manual of Style (16th Edition):
Bréant, Camille. “Variabilité régionale de la densification de la neige polaire lors des grandes transitions climatiques : Regional variability of polar snow densification during large climatic transitions.” 2017. Doctoral Dissertation, Université Paris-Saclay (ComUE). Accessed January 26, 2021.
http://www.theses.fr/2017SACLV104.
MLA Handbook (7th Edition):
Bréant, Camille. “Variabilité régionale de la densification de la neige polaire lors des grandes transitions climatiques : Regional variability of polar snow densification during large climatic transitions.” 2017. Web. 26 Jan 2021.
Vancouver:
Bréant C. Variabilité régionale de la densification de la neige polaire lors des grandes transitions climatiques : Regional variability of polar snow densification during large climatic transitions. [Internet] [Doctoral dissertation]. Université Paris-Saclay (ComUE); 2017. [cited 2021 Jan 26].
Available from: http://www.theses.fr/2017SACLV104.
Council of Science Editors:
Bréant C. Variabilité régionale de la densification de la neige polaire lors des grandes transitions climatiques : Regional variability of polar snow densification during large climatic transitions. [Doctoral Dissertation]. Université Paris-Saclay (ComUE); 2017. Available from: http://www.theses.fr/2017SACLV104
North-West University
21.
Strydom, Mari.
Integrated rapid transport: is the city of Cape Town utilising its full potential? / M. Strydom
.
Degree: 2010, North-West University
URL: http://hdl.handle.net/10394/4417
► The spatial structure of Cape Town is characterised by segregated low density development patterns and urban sprawling. With a high population growth rate and urbanisation,…
(more)
▼ The spatial structure of Cape Town is characterised by segregated low density development patterns and urban sprawling. With a high population growth rate and urbanisation, these patterns are becoming more prominent. Due to the spatial nature of Cape Town, a large proportion of economic activities and employment opportunities are concentrated in patches across the city. In order to combat low-density sprawl and integrate spatially separated areas the key concept ?city densification? and the various elements thereof emerged. The segregated low density city structure, the concentrated nature of economic and employment opportunities along with an ever increasing population and inadequate public transport system resulted in issues such as long average travel lengths, low accessibility by poorer communities, greater use of private vehicles, and a sharp rise in traffic congestion. With the implementation of the Integrated Rapid Transport System (IRT), an initiative to transform the public transport sector to integrate all modal options, the opportunity is rendered to address these environmental, social and economical issues.
The purpose of this study was to determine whether the City of Cape Town (CoCT) is utilising the full potential of the new Integrated Transport System currently being developed and implemented in Cape Town, namely the MyCiTi BRT System. It was determined that in terms of potential environmental benefits the CoCT, is utilising its full potential. Furthermore, although the potential social benefits were being utilised, the urgency of addressing social inequality is not reflected in the phased timeframe set out for the system. In terms of economic benefits, the options of using land-value add and environmental finance currently not sufficiently utilised and should be used to encourage a more sustainable public transport system.
Subjects/Keywords: Integrated rapid transit;
Bus rapid transit;
City densification;
Corridor densification;
Compact city;
Social inequality;
Sustainability
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APA ·
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APA (6th Edition):
Strydom, M. (2010). Integrated rapid transport: is the city of Cape Town utilising its full potential? / M. Strydom
. (Thesis). North-West University. Retrieved from http://hdl.handle.net/10394/4417
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Strydom, Mari. “Integrated rapid transport: is the city of Cape Town utilising its full potential? / M. Strydom
.” 2010. Thesis, North-West University. Accessed January 26, 2021.
http://hdl.handle.net/10394/4417.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Strydom, Mari. “Integrated rapid transport: is the city of Cape Town utilising its full potential? / M. Strydom
.” 2010. Web. 26 Jan 2021.
Vancouver:
Strydom M. Integrated rapid transport: is the city of Cape Town utilising its full potential? / M. Strydom
. [Internet] [Thesis]. North-West University; 2010. [cited 2021 Jan 26].
Available from: http://hdl.handle.net/10394/4417.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Strydom M. Integrated rapid transport: is the city of Cape Town utilising its full potential? / M. Strydom
. [Thesis]. North-West University; 2010. Available from: http://hdl.handle.net/10394/4417
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
22.
Chalencon, Elodie.
Les possibilités d'une densification verticale à l'ile de la Réunion : de la kaz atèr à la kaz atèr anlèr : The possibilities of a vertical densification for Reunion Island : from the cabin on the ground to the cabin in air.
Degree: Docteur es, Aménagement, 2015, Université Grenoble Alpes (ComUE)
URL: http://www.theses.fr/2015GREAH007
► Face au contexte particulier du territoire réunionnais, avec un climat tropical cyclonique, une surface habitable réduite de plus en plus en proie à un étalement…
(more)
▼ Face au contexte particulier du territoire réunionnais, avec un climat tropical cyclonique, une surface habitable réduite de plus en plus en proie à un étalement urbain grandissant, un foncier rare et cher, des matériaux pour la plupart importés, une main d'œuvre peu qualifiée, une dépendance énergétique extérieure, une demande croissante de logements, des revenus plus bas que la moyenne nationale ainsi qu'une population qui ne cesse d'augmenter, le défi architectural à relever est de proposer de nouvelles formes d'habitat économique et écologique qui soient différentes de la kaz créole traditionnelle consommatrice d'espace tout en étant respectueuses des us et coutumes réunionnaises.
Facing the context of the territory of Reunion island, with its tropical and cyclonic climate, a restricted inhabiting surface that is more and more exposed to a growing urban spreading out, a rare and costly land property, building material which are mainly imported, a low-qualified man power, an outer energetic dependence, a growing demand for housing, wages that are lower than the national average and a population which never get up increasing, the architectural challenge consists in proposing new shapes of low-cost and ecological habitat that could be different from the traditional Creole cabin very consuming of space while being respectful of the ways and customs of inhabitants of Reunion.
Advisors/Committee Members: Guillaud, Hubert (thesis director), Dubus, Nicolas (thesis director).
Subjects/Keywords: Modes d’habiter; Densification; Étalement urbain; Habitat; Ways of living; Densification; Urban spreading out; Habitat; 710
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APA ·
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APA (6th Edition):
Chalencon, E. (2015). Les possibilités d'une densification verticale à l'ile de la Réunion : de la kaz atèr à la kaz atèr anlèr : The possibilities of a vertical densification for Reunion Island : from the cabin on the ground to the cabin in air. (Doctoral Dissertation). Université Grenoble Alpes (ComUE). Retrieved from http://www.theses.fr/2015GREAH007
Chicago Manual of Style (16th Edition):
Chalencon, Elodie. “Les possibilités d'une densification verticale à l'ile de la Réunion : de la kaz atèr à la kaz atèr anlèr : The possibilities of a vertical densification for Reunion Island : from the cabin on the ground to the cabin in air.” 2015. Doctoral Dissertation, Université Grenoble Alpes (ComUE). Accessed January 26, 2021.
http://www.theses.fr/2015GREAH007.
MLA Handbook (7th Edition):
Chalencon, Elodie. “Les possibilités d'une densification verticale à l'ile de la Réunion : de la kaz atèr à la kaz atèr anlèr : The possibilities of a vertical densification for Reunion Island : from the cabin on the ground to the cabin in air.” 2015. Web. 26 Jan 2021.
Vancouver:
Chalencon E. Les possibilités d'une densification verticale à l'ile de la Réunion : de la kaz atèr à la kaz atèr anlèr : The possibilities of a vertical densification for Reunion Island : from the cabin on the ground to the cabin in air. [Internet] [Doctoral dissertation]. Université Grenoble Alpes (ComUE); 2015. [cited 2021 Jan 26].
Available from: http://www.theses.fr/2015GREAH007.
Council of Science Editors:
Chalencon E. Les possibilités d'une densification verticale à l'ile de la Réunion : de la kaz atèr à la kaz atèr anlèr : The possibilities of a vertical densification for Reunion Island : from the cabin on the ground to the cabin in air. [Doctoral Dissertation]. Université Grenoble Alpes (ComUE); 2015. Available from: http://www.theses.fr/2015GREAH007
23.
Fourteau, Kévin.
Physique de la fermeture des pores dans le névé polaire, implications pour la compréhension des rétrocations passées entre cycle du carbone et climat : Physics of pore closure in polar firn, and its implications for the understanding of past feedbacks between climate and carbon cycle.
Degree: Docteur es, Sciences de la Terre et de l'Univers et de l'Environnement, 2019, Université Grenoble Alpes (ComUE)
URL: http://www.theses.fr/2019GREAU018
► Les carottes de glace sont des archive climatiques sans équivalents : les gaz contenus dans la glace de la région aride de l'Antarctique de l'Est…
(more)
▼ Les carottes de glace sont des archive climatiques sans équivalents : les gaz contenus dans la glace de la région aride de l'Antarctique de l'Est permettent de reconstruire les compositions atmosphériques au cours des derniers 800 000 ans. Les gaz sont piégés pendant la compaction de la neige tombée sur l'inlandsis. Dans la neige en surface, aussi appelée névé, le réseau poreux interstitiel diminue jusqu'au pincement des pores qui piègent définitivement les gaz dans la glace. Cependant, le processus même de piégeage des gaz impacte l'enregistrement des signaux mesurés dans les carottes. L'interprétation de ces signaux demande de caractériser en quoi ils diffèrent de l'atmosphère passée. Le but de cette thèse est d'étudier deux effets altérant les enregistrements gaz des carottes, le piégeage par couches qui crée des irrégularités stratigraphiques et le lissage qui retire la variabilité rapide de l’enregistrement. Une attention particulière est portée sur les glaces de l'Antarctique de l'Est.Ce travail démarre avec l'étude multi-traceurs d'une carotte de névé forée au site de Lock-In en Antarctique de l'Est. Les résultats montrent que le bas du névé est un empilement hétérogène de strates se densifiant suivant une même évolution de leur réseau poreux. La stratification reflète simplement que certaines strates sont en avance (ou retard) dans leur
densification, mais la fermeture des pores est similaire dans toutes les strates. Notamment, les strates contiennent toutes des quantités similaires de gaz, comme le montrent des mesures directes. Des mesures de chimie à haute-résolution montrent que les strates denses ont une haute conductivité liquide, suggérant que la stratification profonde du névé est due à une
densification préférentielle induite par des impuretés.Ces connaissances sont appliquées pour étudier des variations centimétriques mesurées dans les signaux méthane des carottes de glace. Pour cette thèse, nous utilisons 6 nouveaux signaux méthane à haute résolution, mesurés dans des carottes d'Antarctique de l'Est à l'IGE. On montre que ces variations sont des artefacts dus aux irrégularités stratigraphiques causées par des strates denses se fermant en avance. Un modèle est proposé pour simuler la présence irrégulière de ces artefacts.Une nouvelle méthode est proposée pour estimer la distribution en âge des gaz dans les carottes, qui à l'origine du lissage des variations atmosphériques rapides. Elle peut être appliquée aux carottes de la dernière période glaciaire, et donne pour la première fois des indications quantitatives sur le lissage des signaux dans les carottes à très faible accumulation. Nos résultats montrent qu'en Antarctique de l'Est, le lissage est peu sensible au taux d'accumulation, et que plus d'information que prévu est préservée lors du piégeage.Enfin, nous présentons le développement d'un nouveau type de modèle micro-mécanique du névé. Son but est de simuler l'évolution des pores dans une strate de névé. Un tel modèle pourrait être utilisé pour contraindre le piégeage des gaz dans la glace,…
Advisors/Committee Members: Martinerie, Patricia (thesis director).
Subjects/Keywords: Glaciologie; Climatologie; Densification du névé; Physique; Porosité; Glaciology; Climate; Firn densification; Physics; Porosity; 550
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APA ·
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APA (6th Edition):
Fourteau, K. (2019). Physique de la fermeture des pores dans le névé polaire, implications pour la compréhension des rétrocations passées entre cycle du carbone et climat : Physics of pore closure in polar firn, and its implications for the understanding of past feedbacks between climate and carbon cycle. (Doctoral Dissertation). Université Grenoble Alpes (ComUE). Retrieved from http://www.theses.fr/2019GREAU018
Chicago Manual of Style (16th Edition):
Fourteau, Kévin. “Physique de la fermeture des pores dans le névé polaire, implications pour la compréhension des rétrocations passées entre cycle du carbone et climat : Physics of pore closure in polar firn, and its implications for the understanding of past feedbacks between climate and carbon cycle.” 2019. Doctoral Dissertation, Université Grenoble Alpes (ComUE). Accessed January 26, 2021.
http://www.theses.fr/2019GREAU018.
MLA Handbook (7th Edition):
Fourteau, Kévin. “Physique de la fermeture des pores dans le névé polaire, implications pour la compréhension des rétrocations passées entre cycle du carbone et climat : Physics of pore closure in polar firn, and its implications for the understanding of past feedbacks between climate and carbon cycle.” 2019. Web. 26 Jan 2021.
Vancouver:
Fourteau K. Physique de la fermeture des pores dans le névé polaire, implications pour la compréhension des rétrocations passées entre cycle du carbone et climat : Physics of pore closure in polar firn, and its implications for the understanding of past feedbacks between climate and carbon cycle. [Internet] [Doctoral dissertation]. Université Grenoble Alpes (ComUE); 2019. [cited 2021 Jan 26].
Available from: http://www.theses.fr/2019GREAU018.
Council of Science Editors:
Fourteau K. Physique de la fermeture des pores dans le névé polaire, implications pour la compréhension des rétrocations passées entre cycle du carbone et climat : Physics of pore closure in polar firn, and its implications for the understanding of past feedbacks between climate and carbon cycle. [Doctoral Dissertation]. Université Grenoble Alpes (ComUE); 2019. Available from: http://www.theses.fr/2019GREAU018
24.
Ait Bouali, Zineb.
Impact de la densification pavillonnaire sur les consommations énergétiques de chauffage des ménages : cas de la métropole Aix Marseille Provence : Impact of housing densification on household heating energy consumption.
Degree: Docteur es, Architecture, 2019, Aix Marseille Université
URL: http://www.theses.fr/2019AIXM0688
► L’habitat pavillonnaire s’impose depuis les années soixante-dix comme la forme urbaine la plus attrayante pour les français. Aujourd’hui, on compte plus de 80% de la…
(more)
▼ L’habitat pavillonnaire s’impose depuis les années soixante-dix comme la forme urbaine la plus attrayante pour les français. Aujourd’hui, on compte plus de 80% de la population qui souhaiterait vivre en maison individuelle et en rapport avec la nature. En revanche, ces maisons, telles qu’elles se développent actuellement, font souvent l’objet de débats en raison des modes de vie qu’elles engendrent mais aussi en termes de grignotage d’espace agricole/naturel. La métropole Aix-Marseille Provence n’échappe pas à ce phénomène et enregistre une croissance périurbaine de plus en plus importante. De cette périurbanisation, les consommations d’énergie liées aux bâtiments restent le paramètre le moins investigué puisqu’il est difficile sinon impossible d’estimer les bilans énergétiques bâtiment par bâtiment sur un large territoire. Partant de ce constat, je me suis interrogée sur les leviers permettant de contrôler cette périurbanisation. Cette réflexion est issue du fait qu’à l’heure actuelle, l’état ne cesse de multiplier les progrès en termes de renouvellement urbain notamment avec l’apparition de loi SRU en 2000, puis récemment la loi ALUR en 2014. Ce travail de recherche considère que la densification pourrait être un moyen d’assurer une mixité sociale, générationnelle et fonctionnelle dans des tissus qui sont aujourd’hui dédiés à la seule fonction d’habitation, tout en diminuant leurs besoins énergétiques. Pour vérifier cette hypothèse, un travail expérimental a été élaboré auprès des habitants du lotissement « La Clairnande », où il était question d’évaluer à travers des besoins énergétiques de plusieurs scénarios de densification
The suburban habitat is needed since the seventies as the urban form most attractive for the French. Today, more than 80% of the population would like to live in detached houses and in relation to nature. On the other hand, these houses, as they are currently developing, are often the subject of debate because of the way of life that they generate but also in terms of nibbling agricultural / natural space. The metropolis Aix-Marseille Provence escapes this phenomenon and recored a growing peri-urban growth. From this periurbanisation, energy consumption related to buildings remains the least investigated parameter since it is difficult if not impossible to estimate building energy balances by building over a large area. Based on this observation, I wondered about the levers to control this peri-urbanization. This reflection comes from the fact that, at present, the state continues to multiply the progress in terms of urban renewal, notably with the appearance of the SRU law in 2000, then recently the ALUR law in 2014. This work of research considers that densification could be a means of ensuring a social, generational and functional mix in fabrics that are today dedicated to the sole function of housing, while decreasing their energy needs. To verify this hypothesis, an experimental work was developed with the inhabitants of the subdivision « La Clairnande », where it was a question of…
Advisors/Committee Members: Borruey, René (thesis director), Hanrot, Stéphane (thesis director), Belmaaziz, Mohamed (thesis director).
Subjects/Keywords: Densification pavillonnaire; Consommation énergie; Étalement urbain; Suburban densification; Energy consumption; Urban sprawl
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APA (6th Edition):
Ait Bouali, Z. (2019). Impact de la densification pavillonnaire sur les consommations énergétiques de chauffage des ménages : cas de la métropole Aix Marseille Provence : Impact of housing densification on household heating energy consumption. (Doctoral Dissertation). Aix Marseille Université. Retrieved from http://www.theses.fr/2019AIXM0688
Chicago Manual of Style (16th Edition):
Ait Bouali, Zineb. “Impact de la densification pavillonnaire sur les consommations énergétiques de chauffage des ménages : cas de la métropole Aix Marseille Provence : Impact of housing densification on household heating energy consumption.” 2019. Doctoral Dissertation, Aix Marseille Université. Accessed January 26, 2021.
http://www.theses.fr/2019AIXM0688.
MLA Handbook (7th Edition):
Ait Bouali, Zineb. “Impact de la densification pavillonnaire sur les consommations énergétiques de chauffage des ménages : cas de la métropole Aix Marseille Provence : Impact of housing densification on household heating energy consumption.” 2019. Web. 26 Jan 2021.
Vancouver:
Ait Bouali Z. Impact de la densification pavillonnaire sur les consommations énergétiques de chauffage des ménages : cas de la métropole Aix Marseille Provence : Impact of housing densification on household heating energy consumption. [Internet] [Doctoral dissertation]. Aix Marseille Université 2019. [cited 2021 Jan 26].
Available from: http://www.theses.fr/2019AIXM0688.
Council of Science Editors:
Ait Bouali Z. Impact de la densification pavillonnaire sur les consommations énergétiques de chauffage des ménages : cas de la métropole Aix Marseille Provence : Impact of housing densification on household heating energy consumption. [Doctoral Dissertation]. Aix Marseille Université 2019. Available from: http://www.theses.fr/2019AIXM0688
25.
Quintana S., Victor M.
Paysans et citoyens. Stratégies paysannes de résistance à la mondialisation dans l'ouest du Chihuahua, Mexique : Peasants and citizens : peasants resistance strategies to the modernization of West Chihuahua, Mexico.
Degree: Docteur es, Sociologie, 2009, Université Sorbonne Nouvelle – Paris III
URL: http://www.theses.fr/2009PA030174
► La thèse reconstruit d’une manière critique les actions organisatrices et les luttes que le Front Démocratique Paysan [Frente Democrático Campesino, FDC] a effectuées depuis 1985…
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▼ La thèse reconstruit d’une manière critique les actions organisatrices et les luttes que le Front Démocratique Paysan [Frente Democrático Campesino, FDC] a effectuées depuis 1985 dans l'Ouest du Chihuahua, au Mexique, pour résister à la nouvelle phase agro-exportatrice néolibérale de subordination de l'agriculture au capitalisme, comme une partie du processus de globalisation économique, dans le contexte de la transition à la démocratie au Mexique et des effets désorganisateurs de la modernisation. Elle analyse les différentes luttes du FDC contre l'ouverture commerciale, pour le prix de ses produits, contre la corruption et pour la démocratie, ainsi que la pédagogie de l'action et de construction de citoyenneté qu'il a menée à bien et ses relations internes et externes. Sa conclusion est que les luttes et les actions d'organisation économique et sociale du Front Démocratique Paysan, même convergeant et s’articulant avec celles d'autres organisations paysannes, n'ont pas réussi à construire une corrélation de forces qu'il leur permette de changer ou freiner le modèle agro-alimentaire global d’exploitation et d’exclusion imposé par le gouvernement fédéral au Mexique depuis 1983, bien qu'elles aient influé favorablement les processus de démocratisation et de construction de contre-pouvoirs au niveau local, dans la construction de citoyenneté et densification du social au niveau de leur région d'influence.
This thesis reconstructs the organizational actions and the fight that the Frente Democratico Campesino, Peasant’s Democratic Front the FDC have done since 1995 in the Western Region of Chihuahua, Mexico to resist the new neo-liberal agro-export phase of subordinating agriculture to capitalism as part of the globalization process in the context of the transition towards democracy in Mexico and the disorganizing effects of modernization. Analyzes the different fights of the FDC because of the different components of the productive process against commercial openings, the price of its products, fight against corruption and because of the democracy. Also, the teaching of the action and construction of the community that has been done, as well as its internal and external relationships. It concludes that the Fights, the economic and social organizational actions of the Peasant’s Democratic Front, be connected and unify with the ones of o! ther farming organizations have not achieved a connection of forces that allows them to change or stop the agri-food model imposed by the federal government in Mexico since 1983 even though they have influenced favorably in the democratization processes and the construction of counter powers at a local level, in the construction of community and social densification in its region of influence.
Advisors/Committee Members: Gros, Christian (thesis director).
Subjects/Keywords: Paysans; Modernisation économique; Résistance; Citoyenneté; Contre-pouvoir; Densification; Peasants; Economic modernization; Resistance; Citizenship; Counter power; Social densification
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APA (6th Edition):
Quintana S., V. M. (2009). Paysans et citoyens. Stratégies paysannes de résistance à la mondialisation dans l'ouest du Chihuahua, Mexique : Peasants and citizens : peasants resistance strategies to the modernization of West Chihuahua, Mexico. (Doctoral Dissertation). Université Sorbonne Nouvelle – Paris III. Retrieved from http://www.theses.fr/2009PA030174
Chicago Manual of Style (16th Edition):
Quintana S., Victor M. “Paysans et citoyens. Stratégies paysannes de résistance à la mondialisation dans l'ouest du Chihuahua, Mexique : Peasants and citizens : peasants resistance strategies to the modernization of West Chihuahua, Mexico.” 2009. Doctoral Dissertation, Université Sorbonne Nouvelle – Paris III. Accessed January 26, 2021.
http://www.theses.fr/2009PA030174.
MLA Handbook (7th Edition):
Quintana S., Victor M. “Paysans et citoyens. Stratégies paysannes de résistance à la mondialisation dans l'ouest du Chihuahua, Mexique : Peasants and citizens : peasants resistance strategies to the modernization of West Chihuahua, Mexico.” 2009. Web. 26 Jan 2021.
Vancouver:
Quintana S. VM. Paysans et citoyens. Stratégies paysannes de résistance à la mondialisation dans l'ouest du Chihuahua, Mexique : Peasants and citizens : peasants resistance strategies to the modernization of West Chihuahua, Mexico. [Internet] [Doctoral dissertation]. Université Sorbonne Nouvelle – Paris III; 2009. [cited 2021 Jan 26].
Available from: http://www.theses.fr/2009PA030174.
Council of Science Editors:
Quintana S. VM. Paysans et citoyens. Stratégies paysannes de résistance à la mondialisation dans l'ouest du Chihuahua, Mexique : Peasants and citizens : peasants resistance strategies to the modernization of West Chihuahua, Mexico. [Doctoral Dissertation]. Université Sorbonne Nouvelle – Paris III; 2009. Available from: http://www.theses.fr/2009PA030174
26.
Diatta, Marthe tatiana.
Matières premières argileuses du Sénégal : caractéristiques et applications aux produits céramiques de grande diffusion : Clays from Sénégal : used for manufacturing building ceramics.
Degree: Docteur es, Science des Matériaux, 2016, Limoges; Université Assane Seck (Ziguinchor, Sénégal)
URL: http://www.theses.fr/2016LIMO0026
► Le but de cette étude est d’explorer la possibilité d’utiliser trois argiles dans l’industrie céramique locale au Sénégal. Une argile rouge (NM) et deux argiles…
(more)
▼ Le but de cette étude est d’explorer la possibilité d’utiliser trois argiles dans l’industrie céramique locale au Sénégal. Une argile rouge (NM) et deux argiles grises (MN1) et (MN2) proviennent respectivement de la région de Ziguinchor à Néma et de Tambacounda à Malème Niani. L'étude concernant les caractéristiques physico-chimiques des argiles, indique que les compositions chimique et minéralogique contiennent la présence de quartz, de kaolinite, d’illite, de montmorillonite et de goethite. Leurs caractéristiques structurales et leurs surfaces spécifiques sont similaires. Leur caractéristiques minéralogiques mènent à un classement dans les groupes des argiles kaolino-illite ou kaolino-smectique. Par des analyses thermiques, les températures de transformations thermiques caractéristiques des phases ont été bien identifiéesLa mise en forme par pressage uniaxial des poudres humidifiées et granulées de ces argiles a été optimisée. Les propriétés d’usage des produits frittés ont été mesurées indiquant que les propriétés mécaniques sont limitées, bien que la mullite et la cristobalite constituent les phases minérales majoritaires des microstructures. La porosité a été mesurée après frittage à différentes températures (1000°C, 1100°C et 1200°C), variant de 25% à 30% et diminuant peu avec l’augmentation de la température de frittage. Dans l’ensemble, les résultats révèlent que ces argiles prises à l’état brut nepossèdent pas toutes les caractéristiques satisfaisantes pour la production de briques et tuiles. Pour améliorer les propriétés mécaniques, une substance éco-durable organique, le Cola Cordifolia, a été ajoutée aux argiles. Cet additif induit une augmentation de 28% de la résistance mécanique de l’argile rouge (NM) après cuisson à 1000°C, atteignant la valeur minimale de la norme concernant les briques. Finalement, d’autres pistes d’amélioration des propriétés d’usage ont été explorées telles que l’ajout de l’urée et de fondants potassique et sodique. Ces ajouts ont permis d’accentuer la densification des matériaux de terre cuite pour la production de briques.
The aim of this study is to explore the possibility of using three clays for the local ceramic industry in Senegal. We used a red clay (NM) and two gray clays (MN1) and (MN 2) from the region of Ziguinchor in Nema and Tambacounda in Niani Maleme, respectively. The study of the physicochemical characteristics of clays indicates that the chemical and mineralogicalcompositions contain the presence of quartz, kaolinite, illite, montmorillonite and goethite. Their structural characteristics and their surface areas are similar. Their mineralogical characteristics lead to a classification in groups of Kaolino-illite clays or Kaolino-smectite. By thermal analysis, typical phase transformation temperatures were well identified. The shaping by uniaxial pressing of moistened and granulated powders of clays was optimized. The properties in use of the sintered products were measured indicating that the mechanical properties are limited, although cristobalite and mullite…
Advisors/Committee Members: Blanchart, Philippe (thesis director), Nana Koumtoudji Lecomte, Gisèle Laure (thesis director).
Subjects/Keywords: Substance organique; Densification des matériaux; Résistance à la flexion; Organic substance; Densification of a material; Flexural strength; 620.14
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APA ·
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CSE |
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APA (6th Edition):
Diatta, M. t. (2016). Matières premières argileuses du Sénégal : caractéristiques et applications aux produits céramiques de grande diffusion : Clays from Sénégal : used for manufacturing building ceramics. (Doctoral Dissertation). Limoges; Université Assane Seck (Ziguinchor, Sénégal). Retrieved from http://www.theses.fr/2016LIMO0026
Chicago Manual of Style (16th Edition):
Diatta, Marthe tatiana. “Matières premières argileuses du Sénégal : caractéristiques et applications aux produits céramiques de grande diffusion : Clays from Sénégal : used for manufacturing building ceramics.” 2016. Doctoral Dissertation, Limoges; Université Assane Seck (Ziguinchor, Sénégal). Accessed January 26, 2021.
http://www.theses.fr/2016LIMO0026.
MLA Handbook (7th Edition):
Diatta, Marthe tatiana. “Matières premières argileuses du Sénégal : caractéristiques et applications aux produits céramiques de grande diffusion : Clays from Sénégal : used for manufacturing building ceramics.” 2016. Web. 26 Jan 2021.
Vancouver:
Diatta Mt. Matières premières argileuses du Sénégal : caractéristiques et applications aux produits céramiques de grande diffusion : Clays from Sénégal : used for manufacturing building ceramics. [Internet] [Doctoral dissertation]. Limoges; Université Assane Seck (Ziguinchor, Sénégal); 2016. [cited 2021 Jan 26].
Available from: http://www.theses.fr/2016LIMO0026.
Council of Science Editors:
Diatta Mt. Matières premières argileuses du Sénégal : caractéristiques et applications aux produits céramiques de grande diffusion : Clays from Sénégal : used for manufacturing building ceramics. [Doctoral Dissertation]. Limoges; Université Assane Seck (Ziguinchor, Sénégal); 2016. Available from: http://www.theses.fr/2016LIMO0026
27.
Mariño Blanco, Mariana.
Modification de la porosité de Ce0,9Gd0,1O1,95 par traitement laser : application pile SOFC monochambre : Densification of cerium gadolinium oxide electrolyte by laser treatment : application to single-chamber solid oxide fuel cells.
Degree: Docteur es, Génie des Procédés, 2016, Lyon
URL: http://www.theses.fr/2016LYSEM035
► Dans les piles à combustible SOFC (Solid Oxide Fuel cell) de type monochambre (SC-SOFC), l’anode et la cathode, séparées par un électrolyte, sont situées dans…
(more)
▼ Dans les piles à combustible SOFC (Solid Oxide Fuel cell) de type monochambre (SC-SOFC), l’anode et la cathode, séparées par un électrolyte, sont situées dans une même chambre alimentée par un mélange de combustible et d’oxygène. L’électrolyte, n’ayant alors plus le rôle d’étanchéité entre les compartiments anodique et cathodique, peut être mis en forme par sérigraphie. Cependant, il est nécessaire d’avoir une barrière pour éviter la possible diffusion de l’hydrogène produit localement à l’anode vers la cathode, ce qui peut générer une chute de la tension. L’objectif de ce travail de thèse est de créer une barrière de diffusion localisée via la densification de la surface de l'électrolyte par un traitement laser. Le matériau sélectionné pour l’électrolyte est un oxyde mixte Ce0,9Gd0,1O1,95 (CGO) qui est déposé par sérigraphie sur une anode composite NiO-CGO. Deux types de lasers impulsionnels sont utilisés : un laser UV (λ = 248 nm) et un laser IR (λ = 1064 nm). Les caractérisations microstructurales réalisées ont permis de mettre en évidence les effets du traitement laser pour certaines combinaisons fluence – nombre de tirs, montrant un grossissement de grain de l’électrolyte ou bien des surfaces densifiées mais fissurées. Des modifications structurales et chimiques sur la surface ont été évaluées ainsi que la diffusion de gaz au travers des électrolytes modifiés tout comme leur conductivité électrique. Afin de mieux comprendre l'interaction laser-matière, une modélisation thermique a également été mise en œuvre. Finalement, les performances de piles SC-SOFC ont été améliorées pour les dispositifs présentant un grossissement de grain à la surface de l'électrolyte.
In single-chamber solid oxide fuel cells (SC-SOFC), anode and cathode are placed in a gas chamber where they are both exposed to a fuel/air mixture. Similarly to conventional dual-chamber SOFC, the anode and the cathode are separated by an electrolyte, but in the SC-SOFC configuration it does not play tightness role between compartments. For this reason, a porous electrolyte can be processed by screen printing. However, it is necessary to have a diffusion barrier to prevent the transportation of hydrogen produced locally at the anode to the cathode through the electrolyte that reduces fuel cell performances. This study aims to obtain directly a diffusion barrier through the surface densification of the electrolyte by a laser treatment. The material chosen for the electrolyte was cerium gadolinium oxide Ce0.9Gd0.1O1.95 (CGO) which is deposited by screen printing on a composite NiO-CGO anode. UV laser and IR laser irradiations were used at different fluences and number of pulses to modify the density of the electrolyte coating. Microstructural characterizations confirmed the modifications on the surface of the electrolyte for appropriate experimental conditions showing either grain growth or densified but cracked surfaces. Structural and chemical modifications on the surface were evaluated as well as the gas diffusion through the electrolytes and their…
Advisors/Committee Members: Viricelle, Jean-Paul (thesis director).
Subjects/Keywords: Piles à combustible; SOFC; Monochambre; CGO; Electrolyte; Densification des surfaces; Traitement laser; SOFC; Single-chamber; CGO; Electrolyte; Surface densification; Laser processing
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APA ·
Chicago ·
MLA ·
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CSE |
Export
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APA (6th Edition):
Mariño Blanco, M. (2016). Modification de la porosité de Ce0,9Gd0,1O1,95 par traitement laser : application pile SOFC monochambre : Densification of cerium gadolinium oxide electrolyte by laser treatment : application to single-chamber solid oxide fuel cells. (Doctoral Dissertation). Lyon. Retrieved from http://www.theses.fr/2016LYSEM035
Chicago Manual of Style (16th Edition):
Mariño Blanco, Mariana. “Modification de la porosité de Ce0,9Gd0,1O1,95 par traitement laser : application pile SOFC monochambre : Densification of cerium gadolinium oxide electrolyte by laser treatment : application to single-chamber solid oxide fuel cells.” 2016. Doctoral Dissertation, Lyon. Accessed January 26, 2021.
http://www.theses.fr/2016LYSEM035.
MLA Handbook (7th Edition):
Mariño Blanco, Mariana. “Modification de la porosité de Ce0,9Gd0,1O1,95 par traitement laser : application pile SOFC monochambre : Densification of cerium gadolinium oxide electrolyte by laser treatment : application to single-chamber solid oxide fuel cells.” 2016. Web. 26 Jan 2021.
Vancouver:
Mariño Blanco M. Modification de la porosité de Ce0,9Gd0,1O1,95 par traitement laser : application pile SOFC monochambre : Densification of cerium gadolinium oxide electrolyte by laser treatment : application to single-chamber solid oxide fuel cells. [Internet] [Doctoral dissertation]. Lyon; 2016. [cited 2021 Jan 26].
Available from: http://www.theses.fr/2016LYSEM035.
Council of Science Editors:
Mariño Blanco M. Modification de la porosité de Ce0,9Gd0,1O1,95 par traitement laser : application pile SOFC monochambre : Densification of cerium gadolinium oxide electrolyte by laser treatment : application to single-chamber solid oxide fuel cells. [Doctoral Dissertation]. Lyon; 2016. Available from: http://www.theses.fr/2016LYSEM035
KTH
28.
Blomqvist, Rustan.
Stationsnära planering : En förtätningsanalysmodell för mindre tätorter i Östergötland.
Degree: Urban and Regional Studies, 2016, KTH
URL: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-188604
► Stationsnäraprincipen innebär att stadsutveckling koncentreras kring knutpunkter i kollektivtrafiken för att öka tillgängligheten och kollektivtrafikens konkurrenskraft mot bilburna transporter för att stärka en hållbar…
(more)
▼ Stationsnäraprincipen innebär att stadsutveckling koncentreras kring knutpunkter i kollektivtrafiken för att öka tillgängligheten och kollektivtrafikens konkurrenskraft mot bilburna transporter för att stärka en hållbar regionförstoring. Visionen att planera stationsnära i Östergötland kommer från regional nivå och för att implementera visionen i den kommunala planeringen blir det viktigt att visa hur både regionen och varje enskild kommun kan gynnas. Ett tillvägagångssätt är att hitta en arbetsmodell som kan lyfta regionala perspektiv i den lokala planeringsprocessen. Syftet med det här arbetet är att ta fram en förtätningsmodell för stationsnära planering i mindre tätorter. En förtätningsmodell för stockholmsregionen har tidigare tagits fram i samband med den regionala utvecklingsplanen och i det här arbetet undersöks om den modellen kan anpassas för stationsnära planering i mindre tätorter. Förtätningsmodellen har metodiskt anpassats med hjälp från två planerare i Östergötland samt en litteraturstudie om regional utveckling och stationsnära planering. Den anpassade modellen har prövats i två separata fallstudier och resultatet omfattar en kartläggning av förtätningspotentialen som beskrivs utifrån tre olika förtätningsscenarion; kommunala fokusområden för stationsnära planering, marknadsintressanta exploateringsområden och konsensusutveckling. Modellen möjliggör att den regionala visionen för stationsnära planering förs in i den kommunala planeringsprocessen och visar inte enbart hur både kommun och region kan gynnas av ett samarbete, utan även vilka knäckfrågor den enskilda kommunen måste övervinna för att fortsätta utvecklas i framtiden.
Stationsnäraprincipen imply that urban development is concentrated around public transport nodes to increase the accessibility and competitiveness of public transport against motoring transport to ensure that regional enlargement is achieved in a sustainable way. The vision for transit-oriented development (TOD) in Östergötland derives from a regional planning level and in order to implement the vision in municipal planning, it is important to specify how both the municipality and the region can benefit. An approach is to find a model that can raise the regional perspective in the local planning process. The purpose of this study is to develop a densification model that focuses on TOD in smaller urban areas. A densification model for the Stockholm region has previously been developed in conjunction with the regional development plan, and this study examines whether the model can be adapted to TOD planning in smaller urban areas. The densification model has been modified methodically with the help of two planners in Östergötland as well as a literature review on regional development and TOD. The custom model has been tested in two separate case studies and the results comprise a mapping of the potential for densification described in three different densification scenarios; municipal focus areas for densification, market interesting development areas and consensus…
Subjects/Keywords: Urban planning; Transit Oriented Development; TOD; densification; densification model; polycentric development; analysis model; Samhällsplanering; stationsnära planering; förtätning; förtätningsmodell; regionförstoring; analysmodell
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
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APA (6th Edition):
Blomqvist, R. (2016). Stationsnära planering : En förtätningsanalysmodell för mindre tätorter i Östergötland. (Thesis). KTH. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-188604
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Blomqvist, Rustan. “Stationsnära planering : En förtätningsanalysmodell för mindre tätorter i Östergötland.” 2016. Thesis, KTH. Accessed January 26, 2021.
http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-188604.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Blomqvist, Rustan. “Stationsnära planering : En förtätningsanalysmodell för mindre tätorter i Östergötland.” 2016. Web. 26 Jan 2021.
Vancouver:
Blomqvist R. Stationsnära planering : En förtätningsanalysmodell för mindre tätorter i Östergötland. [Internet] [Thesis]. KTH; 2016. [cited 2021 Jan 26].
Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-188604.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Blomqvist R. Stationsnära planering : En förtätningsanalysmodell för mindre tätorter i Östergötland. [Thesis]. KTH; 2016. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-188604
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
KTH
29.
Bivrin, Julia.
Vertikal förtätning med tredimensionellfastighetsbildning : En undersökning av förutsättningarna.
Degree: Real Estate and Construction Management, 2019, KTH
URL: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-254282
► Invånarantalet i Sverige ökar och bristen på bostäder likaså. Mark att bebygga minskar och förtätning är något som det pratas mycket om. Tredimensionell fastighetsbildning…
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▼ Invånarantalet i Sverige ökar och bristen på bostäder likaså. Mark att bebygga minskar och förtätning är något som det pratas mycket om. Tredimensionell fastighetsbildning infördes år 2004 och ett motiv till det var för att underlätta vid på- och nybyggnation på befintliga byggnader. Detta har dock inte skett i så stor utsträckning och man kan fråga sig varför? I detta arbete kommer svårigheter och möjligheter med vertikal förtätning att undersökas och även varför möjligheten inte används i så stor utsträckning. Arbetet är en kvalitativ studie som grundar sig på en fallstudie, litteraturstudie och intervjuer. Examensarbetet är begränsat till vertikal förtätning med tredimensionell fastighetsbildning och de fastighetsjuridiska frågor som kan uppstå. Förtätning innebär att man bygger nya byggnader eller utökar befintliga byggnader på höjden inom redan befintlig bebyggelse. Fördelarna med vertikal förtätning är att det är yteffektivt och inga grönytor tas i anspråk. Genom tredimensionell fastighetsbildning skapas en egen fastighet som avser endast påbyggnationen. Tre påbyggnadsprojekt har undersökts och utretts varav två ligger i centrala Stockholm och ett projekt ligger i centrala Jönköping. En genomgång av detaljplaner, lantmäteriförrättningar och informationsunderlag samt intervju med fastighetsbildningskonsulter och lantmätare har legat till grund för resultatet. Även en genomgång av möjliga platser för andra liknande projekt presenteras. Projekten har många likheter men också skillnader gällande rättighetslösningarna, storlek och omfattning. Svårigheter som uppmärksammats är rättighetslösningar, planändring, samverkan mellan olika ägare samt okunskap om processen och tredimensionell fastighetsbildning. De möjligheter som uppmärksammats är att vertikal förtätning sparar på grönområden då man bygger på befintliga byggnader. Då påbyggnationen leder till fler människor inom samma område kan bland annat infrastrukturen användas mer effektivt. Vid användning av tredimensionell fastighetsbildning vid påbyggnationen kan vi få en mer blandad stad genom att få in flera typer av användningar och upplåtelseformer i samma hus. Detta kan leda till att tryggheten ökar och att segregationen minskar. Varför det inte byggs mer genom vertikal förtätning är bland annat för att många aktörer ser för många osäkerheter i processen. Analysen har identifierat avgörande faktorer för att projekt ska påbörjas. Den första är konstruktionen, andra är planändringen som kräver tid och resurser samt den tredje som är samverkan mellan fastighetsägarna och de boende. Nyckeln till påbyggnadsprojekt är ekonomin. Har man en hållbar ekonomi och tror på bra avkastning på sin investering kommer man ta sig an riskerna som medföljer.
The number of people is increasing in Sweden and the shortage of housing too. Land to build on is decreasing and…
Subjects/Keywords: Three-dimensional property formation; vertical densification; densification; Tredimensionell fastighetsbildning; vertikal förtätning; påbyggnation; förtätning; Engineering and Technology; Teknik och teknologier
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APA (6th Edition):
Bivrin, J. (2019). Vertikal förtätning med tredimensionellfastighetsbildning : En undersökning av förutsättningarna. (Thesis). KTH. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-254282
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Bivrin, Julia. “Vertikal förtätning med tredimensionellfastighetsbildning : En undersökning av förutsättningarna.” 2019. Thesis, KTH. Accessed January 26, 2021.
http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-254282.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Bivrin, Julia. “Vertikal förtätning med tredimensionellfastighetsbildning : En undersökning av förutsättningarna.” 2019. Web. 26 Jan 2021.
Vancouver:
Bivrin J. Vertikal förtätning med tredimensionellfastighetsbildning : En undersökning av förutsättningarna. [Internet] [Thesis]. KTH; 2019. [cited 2021 Jan 26].
Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-254282.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Bivrin J. Vertikal förtätning med tredimensionellfastighetsbildning : En undersökning av förutsättningarna. [Thesis]. KTH; 2019. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-254282
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Université Paris-Sud – Paris XI
30.
Sellami, Neila.
Oxydes pyrochlores : de l’élaboration aux propriétés sous irradiation : Pyrochlore oxides : from the elaboration to the properties under irradiation.
Degree: Docteur es, Chimie, 2015, Université Paris-Sud – Paris XI
URL: http://www.theses.fr/2015PA112003
► En raison de la résistance élevée à l’irradiation de certaines compositions, les oxydes de structure pyrochlore A₂B₂O ₇ sont considérés comme des matrices potentielles d’immobilisation…
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▼ En raison de la résistance élevée à l’irradiation de certaines compositions, les oxydes de structure pyrochlore A₂B₂O ₇ sont considérés comme des matrices potentielles d’immobilisation des actinides produits en réacteur nucléaire. Dans ce contexte, l’étude de la stabilité structurale sous irradiation de ces oxydes est particulièrement importante. Ce travail concerne donc l’étude de l’influence de la composition des pyrochlores et de leur microstructure sur leur comportement vis-à-vis de l’irradiation.Dans ce but, quatre compositions d’oxydes pyrochlores de formule générale A₂B₂O ₇ avec A = Gd, Nd et B = Zr, Ti ont tout d’abord été élaborées. Différentes voies de synthèse (réaction à l’état solide, chimie douce par la méthode Pechini) de poudres pyrochlores ont été explorées afin de maîtriser in fine la taille de grains des céramiques densifiées par frittage classique ou par frittage SPS. Les résultats obtenus par chimie douce sont prometteurs : des poudres fines (<100 nm) de structure pyrochlore ont été élaborées. Enfin, selon les conditions de frittage SPS choisies, des céramiques denses ont été obtenues, avec une taille de grains de 700 nm pour Y₂Ti₂O ₇ et de 300 nm pour Nd₂Zr₂O ₇ , ce qui, à notre connaissance, correspond aux plus petites tailles de grains pour ce type de composé.Afin d’étudier le comportement sous irradiation, les oxydes élaborés de compositions Gd₂Ti₂O ₇ , Y₂Ti₂O ₇ , Gd₂Zr₂O ₇ et Nd₂Zr₂O ₇ , ont été irradiés avec des ions lourds de basse énergie (Au 4MeV délivrés par l’installation JANNuS à Orsay) pour déterminer les modifications structurales produites par les effets nucléaires et par des ions lourds d’une centaine de MeV (ligne IRRSUD) ou de l’ordre du GeV (ligne SME) du GANIL à Caen afin d’étudier les effets induits par les excitations électroniques. Les transformations induites par irradiation ont été caractérisées par Diffraction des Rayons X (parfois in situ avec le dispositif ALIX du GANIL), Microscopie Electronique à Balayage et en Transmission (MEB, MET) et spectroscopie Raman. La spectroscopie d'absorption (XANES et EXAFS effectuées au synchrotron SOLEIL) a été utilisée pour caractériser l'ordre local dans la phase amorphe induite par irradiation dans les titanates. Dans le domaine du ralentissement nucléaire, les résultats principaux sont que les titanates s’amorphisent sous irradiation alors que seule une transition pyrochlore-fluorine est observée pour les zirconates. Dans le domaine du ralentissement électronique, les titanates s’amorphisent par un mécanisme d’impact direct et Gd₂Zr₂O ₇ subit uniquement une transition pyrochlore-fluorine. Par contre, contrairement à son comportement observé sous irradiation avec des ions de basse énergie, Nd₂Zr₂O ₇ s’amorphise avec des ions lourds de haute énergie, avec une cinétique d’endommagement complexe qui met en jeu des transitions pyrochlore-amorphe, pyrochlore-fluorine et fluorine-amorphe. La structure interne des traces induites par excitations électroniques a été étudiée par MET. Les analyses par spectroscopie Raman en coupe transverse…
Advisors/Committee Members: Sattonnay, Gaël (thesis director).
Subjects/Keywords: Oxydes pyrochlores; Déchets radioactifs; Élaboration; Frittage SPS; Densification; Irradiation; Caractérisation; Pyrochlore oxides; Radioactive waste; Elaboration; SPS sintering; Densification; Irradiation; Characterization
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Sellami, N. (2015). Oxydes pyrochlores : de l’élaboration aux propriétés sous irradiation : Pyrochlore oxides : from the elaboration to the properties under irradiation. (Doctoral Dissertation). Université Paris-Sud – Paris XI. Retrieved from http://www.theses.fr/2015PA112003
Chicago Manual of Style (16th Edition):
Sellami, Neila. “Oxydes pyrochlores : de l’élaboration aux propriétés sous irradiation : Pyrochlore oxides : from the elaboration to the properties under irradiation.” 2015. Doctoral Dissertation, Université Paris-Sud – Paris XI. Accessed January 26, 2021.
http://www.theses.fr/2015PA112003.
MLA Handbook (7th Edition):
Sellami, Neila. “Oxydes pyrochlores : de l’élaboration aux propriétés sous irradiation : Pyrochlore oxides : from the elaboration to the properties under irradiation.” 2015. Web. 26 Jan 2021.
Vancouver:
Sellami N. Oxydes pyrochlores : de l’élaboration aux propriétés sous irradiation : Pyrochlore oxides : from the elaboration to the properties under irradiation. [Internet] [Doctoral dissertation]. Université Paris-Sud – Paris XI; 2015. [cited 2021 Jan 26].
Available from: http://www.theses.fr/2015PA112003.
Council of Science Editors:
Sellami N. Oxydes pyrochlores : de l’élaboration aux propriétés sous irradiation : Pyrochlore oxides : from the elaboration to the properties under irradiation. [Doctoral Dissertation]. Université Paris-Sud – Paris XI; 2015. Available from: http://www.theses.fr/2015PA112003
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Open Access Theses and Dissertations