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Dissertations / Theses on the topic 'Mechanical composition of soil'

Author: Grafiati

Published: 5 June 2025

Last updated: 15 July 2025

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1

Khairnar, Kaushal. "Effect of different organic amendments on soil quality, vines growth, grape production and wine quality of mechanically pruned vineyards." Master's thesis, ISA/UL, 2014. http://hdl.handle.net/10400.5/8632.

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Mestrado Vinifera EuroMaster - Instituto Superior de Agronomia<br>The experiment with an aim to study the effect of pruning types and effect of different types of organic amendments on soil quality, vine growth, grape production and wine quality was conducted in two sites located in Vilar and Sardoal region of Portugal. The pruning treatments included manual spur (MAN) and mechanical hedge (MEC) type of pruning and types of organic amendments applied were biochar (BIOC), municipal solid waste compost (RSUC), cattle manure (ESTR), sewage sludge (ETAR) and control treatment (TEST). The treatmen

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2

Tejero, Páramo Miguel. "Agronomical effects of mechanical box pruning in cv. Merlot at central area of Spain." Master's thesis, ISA, 2016. http://hdl.handle.net/10400.5/14807.

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Mestrado Vinifera Euromaster - Instituto Superior de Agronomia / Institut National D' Etudes Superieures Agronomiques de Montpellier<br>Introduction: Global warming, economic crisis and globalization are the three pillars which are altering the world in all the domains. In viticulture, a shortening of the grapevine phenology and an imbalance sugars/acidity derived from the new climatic conditions are forcing a reshuffle of the way of working in the field, in a more productive and sustainable with better quality. For that reason new pruning techniques have been developed in a way to adapt

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3

Orwin, K. H. "Soil microbial stability and function : the role of diversity, composition and soil resources." Thesis, University of Canterbury. Biological Sciences, 2004. http://hdl.handle.net/10092/6810.

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Soil microbial function and stability may affect many other ecosystem functions, including soil carbon storage, nutrient cycling and plant productivity. However, the drivers of soil microbial stability itself are little understood. This thesis therefore aimed to develop a method and indices capable of quantifying soil microbial stability in terms of the resistance (amount of change caused by a disturbance), and resilience (rate of recovery) of the soil microbial community to a model disturbance, and to determine the role of three potential drivers of soil microbial function arid stability: div

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4

Keeling, William G. "Effects of soil texture, soil depth, and treatment on septic tank effluent renovation." Thesis, This resource online, 1995. http://scholar.lib.vt.edu/theses/available/etd-06082009-171000/.

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5

Ayala, Hugo M. (Hugo Mario). "Soil ingestion by elastomeric seals." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/46270.

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Thesis (Sc.D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1999.<br>Includes bibliographical references (p. 157-160).<br>Studies of elastomeric seal failure have until recently focused on the erosion of the sealing interface. This has limited the improvements in seal life to the application of wear-resistant materials. The present work shows that three stages of particle ingestion precede seal erosion, and that seals designed to interfere with each stage exhibit substantially longer operational life. The three stages of failure preceding seal erosion are as follows

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6

Hamuda, Salah Saed. "The relation between soil composition and its thermal characteristics." Thesis, University of Newcastle Upon Tyne, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.514996.

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7

Nel, Jacques A. "Vegetation and microbial determinants of soil carbon isotopic composition." Master's thesis, University of Cape Town, 2018. http://hdl.handle.net/11427/28072.

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Typically, soil δ¹³C and δ¹⁵N values tend to increase with depth across a wide range of ecosystems. Changes in δ¹³C with depth have been attributed to vegetation changes (i.e. C₃/C₄ shifts), but the similarity in δ¹³C and δ¹⁵N profiles suggest that microbial decomposition may play an important role. The determinants of soil δ¹³C and δ¹⁵N, however, are complex and microbial decomposition and vegetation shifts are not the only mechanisms that drive the fractionation of the isotopes with depth. We explored the utility of using δ¹³C as a proxy for vegetation change by considering alternative mecha

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8

Baxter, Diane Yamane. "Mechanical Behavior of Soil-Bentonite Cutoff Walls." Diss., Virginia Tech, 2000. http://hdl.handle.net/10919/27079.

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A soil-bentonite cutoff wall is a type of subsurface vertical barrier constructed by back-filling a trench with a mixture of soil, bentonite, and water. Although soil-bentonite cutoff walls are common, their mechanical behavior is not well understood. Current design procedures do not consider the final stress state of the consolidated soil-bentonite backfill or deformations in adjacent ground. The final stress state in the completed wall is important because it influences the hydraulic conductivity of the cutoff (Barrier 1995), the cutoff's susceptibility to hydraulic fracture, and the magnitu

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9

Lee, In-Keun. "Mechanical behaviour of compacted decomposed granite soil." Thesis, Online version, 1991. http://ethos.bl.uk/OrderDetails.do?did=1&uin=uk.bl.ethos.292710.

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10

Leung, Shun Cheong. "The mechanical characteristics of cemented sand : particulate scale study /." View abstract or full-text, 2005. http://library.ust.hk/cgi/db/thesis.pl?CIVL%202005%20LEUNGS.

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11

Luginbuhl, Katharine. "Soil stabilization properties of flexible intruders." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/74450.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2012.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 18).<br>In many locations, soil is held in place by the roots of plants. When these plants are removed or die, the soil loses its cohesive strength and erodes away. We seek to create artificial soil stabilizers that use the same physical principles as the plant roots. To investigate how flexible materials can stabilize soil, we use photoelastic particles to analyze the forces within a system when a flexible intruder is

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12

Dexter, Anthony Roger. "Soil mechanical properties and the behaviour of roots in structured soil : published works." Title page, contents and introduction only, 1988. http://web4.library.adelaide.edu.au/theses/09SD/09sdd526.pdf.

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13

Tkacz, Andrzej. "Plant genotype, immunity and soil composition control the rhizosphere microbiome." Thesis, University of East Anglia, 2013. https://ueaeprints.uea.ac.uk/48113/.

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Three model plant and three crop plant species were grown for three generations in sand and compost. Pots were inoculated with 10 % soil initially, and with 10% of growth medium from the previous generation in generations 2 and 3, keeping replicates separate for all three generations. The microbiome community structure of the plant rhizosphere in each generation was characterised using ARISA DNA fingerprinting and 454 sequencing. Rhizosphere bacterial and fungal communities are different from those in bulk soil and there are also differences in the microbial community between different plant s

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14

Nielsen, Uffe Nygaard. "Influences on species richness and composition of belowground communities at multiple spatial scales." Thesis, Available from the University of Aberdeen Library and Historic Collections Digital Resources, 2008. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=24811.

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15

Cunningham, Mark Robert. "The mechanical behaviour of a reconstituted, unsaturated soil." Thesis, Imperial College London, 2000. http://hdl.handle.net/10044/1/8699.

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16

Gallipoli, Domenico. "Constitutive and numerical modelling of unsaturated soil." Thesis, University of Glasgow, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.325448.

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17

Moreland, Scott J. "Traction Processes of Wheels in Loose, Granular Soil." Research Showcase @ CMU, 2013. http://repository.cmu.edu/dissertations/278.

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This dissertation presents analyses of subsurface motions of soil beneath different traction devices and develops new explanations of traction processes of wheels operating in loose granular soil based on these observations. This dissertation shows how these findings are useful for the development of planetary rover mobility systems. Shear Interface Imaging Analysis (SIIA), is a new technique, developed as part of this thesis research. SIIA is employed for visualizing the effects of wheel operation on the soil beneath a rim, in richer detail than before possible. SIIA relies on high-speed imag

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18

Hong, Won 1971. "Modeling, estimation, and control of robot-soil interactions." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/16785.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2001.<br>Includes bibliographical references (p. 257-267).<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>This thesis presents the development of hardware, theory, and experimental methods to enable a robotic manipulator arm to interact with soils and estimate soil properties from interaction forces. Unlike the majority of robotic systems interacting with soil, our objective is parameter estimation, no

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19

Bhuiyan, M. A. S. "The mechanical behaviour of stabilised soils." Thesis, University of Newcastle Upon Tyne, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.382836.

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20

Puig, Damians Ivan. "Mechanical performance and sustainability assessment of reinforced soil walls." Doctoral thesis, Universitat Politècnica de Catalunya, 2016. http://hdl.handle.net/10803/398890.

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Soil reinforced retaining wall structures are materiallymore efficientthan competing construction solutions such as gravity and cantilever walls. Nevertheless, the behaviour and interactions between the com ponent materials are com plex and not fully understood. Current design methods are typically limited to simple cases with respect to material properties, geometry, and boundary conditions. Advanced numerical models using finite element and/or finite difference methods offer the possibilityto extend the understanding ofthese systems and to predictwall performance under operational conditions

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21

BOLANOS, RAFAEL EDUARDO ZACCOUR. "MECHANICAL BEHAVIOR OF CLAYEY SOIL REINFORCED WITH COCONUT FIBER." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2013. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=23442@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>Este estudo apresenta o comportamento de um solo argiloso reforçado e não reforçado com fibras de coco verde (resíduo proveniente do consumo da água de coco), através da realização de ensaios de caracterização e ensaios mecânicos de compactação e de ensaios triaxiais isotropicamente drenados. A fibra de coco utilizada foi obtida por processo mecânico na empresa ECOFIBRA, que possui uma parceria com a Companhia de Limpeza Urbana da cidade do Rio de Janeiro (COMLURB) em projeto piloto de coleta seletiva das cascas de coco verde. O material re

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22

Oliveira, Alex Duarte de. "Soil mechanical behavior artificially cemented: essays modeling and application." Universidade Federal do CearÃ, 2015. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=15769.

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Considering the similarity between the mechanical behavior of artificially cemented soils and rock masses, this study proposes a methodology to obtain the envelopes resistance of artificially cemented soils, using the Hoek-Brown failure criterion. The proposed methodology consists basically in performing two triaxial tests, with the soil non-cemented and cemented with a high cement content, and estimate the strength envelopes for intermediate cement contents, using the equations presented in this research. To develop the methodology, initially, a number of unconfined compression tests and tria

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23

Müller, Carsten. "Carbon sequestration and soil organic matter composition affected by altered soil aggregate dynamics due to land-use changes." kostenfrei, 2009. http://mediatum2.ub.tum.de/node?id=808703.

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24

Azimi, Ali. "Wheel-soil interaction modelling for rover simulation and analysis." Thesis, McGill University, 2014. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=121231.

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Appropriate modelling of the interaction between wheel and terrain is a key element in simulating wheeled mobile robots and analyzing their functionality on soft terrain. In this thesis, two modelling approaches, with their implementation in a multi-body dynamics environment and their experimental validation, are introduced. The first approach is based on well-established semi-empirical terramechanics models. The multi-pass effect is considered in the implementation by storing terrain deformation and changes in hardening of soil under the wheel. A high-resolution height-field (HF) is used to m

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25

Rosenberg, Ron S. M. Massachusetts Institute of Technology. "Screen-printed ion selective electrodes for soil ion detection." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/110884.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2016.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 187-192).<br>Rural Indian farmers lack an available, affordable, usable, and actionable means to diagnose soil health, which is a prerequisite for judicious application of fertilizer. Although government labs and mobile kits are available, these fail to meet the aforementioned qualities; as a result fewer than 5% of rural Indian farmers have ever performed a soil test. This thesis details the design and character

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26

Ayala, Hugo M. (Hugo Mario). "The effects of soil abrasives on rotary seal effectiveness." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/38076.

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27

Green, Donald F. (Donald Frederick) 1969. "Haptic simulation of naturally occuring textures and soil properties." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/9599.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1998.<br>Includes bibliographical references (p. 69-71).<br>Methods for developing realistic haptic (force feedback) simulations of soils and rocks are presented. Mathematical models of the dynamics of a virtual probe mechanically interacting with a virtual object are developed to provide the basis for analysis and simulation. The models then incorporate stochastic inputs in order to provide the haptic simulations with a more natural, less synthetic feel. The stochastic input parameters are derived by analyz

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28

Barzegar, Abdolrahman. "Structural stability and mechanical strength of salt-affected soils." Title page, contents and abstract only, 1995. http://web4.library.adelaide.edu.au/theses/09PH/09phb296.pdf.

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Copies of author's previously published articles in pocket inside back cover. Bibliography: leaves 147-160. This thesis outlines the factors affecting soil strength and structural stability and their interrelationship in salt-affected soils. The objectives of this study are to investigate the influence of clay particles on soil densification and mellowing, the mellowing of compacted soils and soil aggregates as influenced by solution composition, the disaggregation of soils subjected to different sodicities and salinities and its relationship to soil strength and dispersible clay and the effec

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29

Sørensen, Caroline S. M. Massachusetts Institute of Technology. "Measurement of flame propagation through step changes in mixture composition." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/104265.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2016.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 51-53).<br>Flame speed is a central metric in the field of combustion. While particular mixtures have characteristic flame speeds, it has also been shown that in compositionally stratified mixtures, flames exhibit a path dependency, or memory effect. The goal of the experimental work presented in this thesis was to investigate the behavior of flame speed over step changes in equivalence ratios. This sharp stratif

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30

Treers, Laura. "Investigating a non-invasive method for determining muscle fiber composition." Thesis, Massachusetts Institute of Technology, 2018. http://hdl.handle.net/1721.1/119934.

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Thesis: S.B., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2018.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 39-40).<br>This study aims to explore a new method for analysis of muscle fiber type, using data collected from weightlifts on a leg press. A dynamic muscle model is developed, which utilizes the Descherevskii kinetic theory in combination with a muscle "matrix" model to predict net muscle contraction forces and velocities as a function of fiber type. These relationships are integrated into a dynamic model for li

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31

Fan, Shaopeng, and 樊少鹏. "Mechanical behavior of soil nail bar composites with laboratory tests." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2011. http://hub.hku.hk/bib/B47170712.

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Past studies on soil nailing have a common assumption that a soil nail could be simplified as a single material solid cylinder. However, a soil nail is a composite material and consisted of the following basic components: steel bars, cement grout, PVC centralizers, steel couplers, and a plastic hose, etc. They are combined and work together to keep the fundamental functions in soil reinforcement. Since these components are made by various constituent materials, the physical and mechanical properties of them are greatly different, making the deformations through soil nail diverse. The diffe

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32

Asoudeh, Atefeh. "Identifying Residual Soil Parameters for Numerical Analysis of Soil Nailed Walls." Thesis, Griffith University, 2016. http://hdl.handle.net/10072/367048.

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This thesis provides a detailed study of slope reinforcement in soil slopes using soil nails, anchors and other mechanical stabilization methods. The major emphasis is on the use of soil nails in slopes formed with mostly residual soils. A comparative study has been performed reviewing the different methods of slope stability analysis, and the shear strength parameters used in stability analyses, the soil models used in numerical analyses, residual soil profiles and their detailed engineering properties used in previous studies and various computer software which are currently in use. An impo

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33

Si, Weiduo. "The effect of plant residue decomposition on microbial community composition in soil." Thesis, University of Newcastle Upon Tyne, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.324866.

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34

Dempsey, Mark A. "Exotic earthworms and soil microbial community composition in a northern hardwood forest." Miami University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=miami1259958575.

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35

Breithaupt, Joshua L. "Spatio-temporal Dynamics of Soil Composition and Accumulation Rates in Mangrove Wetlands." Scholar Commons, 2017. http://scholarcommons.usf.edu/etd/6684.

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Coastal wetlands are globally important environments for biogeochemical cycling and are the object of intensive research related to the sequestration and exchange of carbon with oceans, continents, and the atmosphere. Wetland soil core records of organic carbon (OC) provide insights about future ecosystem responses to global change by identifying temporal variability in the context of environmental changes including sea level rise (SLR), anthropogenic reductions in freshwater flow, and landscape-scale disturbance events. My studies of Gulf of Mexico mangroves involved the use of radiometricall

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36

Dempsey, Mark Austin. "Exotic earthworms and soil microbial community composition in a northern hardwood forest." Oxford, Ohio : Miami University, 2009. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=miami1259958575.

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37

Sabet-Sharghi, Riaz. "Composition dependence of mechanical properties in Al-rich metallic glasses." Thesis, McGill University, 1993. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=26134.

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The effect of composition on the mechanical properties of high Al content Al-Y-Ni metallic glasses has been studied. Nine samples in all were prepared with a composition of ${ rm Al sb{85}Y} sb{x}{ rm Ni} sb{15-x}({ rm x}=3, ...,11).$ The amorphous alloys were first tested using both XRD and DSC. The DSC runs revealed that the samples were made up of two different types: one showing no glass transition and a lower crystallization temperature, and the other showing a distinct glass transition with a higher crystallization temperature indicating that they are truly homogeneous glasses. The sampl

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38

Ghadimi, Elnaz. "Crystal shape and composition of enamel affect its mechanical properties." Thesis, McGill University, 2014. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=121579.

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Tooth enamel is a composite material, made of an organic phase (2-4% of enamel) and an inorganic phase (96-98% of enamel) that protects the tooth layers underneath (dentin and dental pulp). Tooth enamel is the hardest and one of the toughest materials in mammals. However, enamel suffers from continuous mechanical stress that might cause cracks, creating a favourable environment for bacteria growth and leading to tooth sensitivity or fracture. Also the incorporation of ions in tooth enamel structure can affect the crystallographic, mechanical and physical properties. This study was designed to

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39

Marks, Christian O. (Christian Olav). "Removal of hexavalent chromium from a contaminated soil by electroremediation." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/43327.

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40

Collins, Shane. "Residue composition influences nutrient release from crop residues." University of Western Australia. School of Earth and Geographical Sciences, 2009. http://theses.library.uwa.edu.au/adt-WU2009.0171.

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[Truncated abstract] A greater adoption of stubble retention, minimum-till and no-till farming practices for the purposes of conserving soil, water and fertility requires a greater understanding of the complexity of physical and chemical interactions between the soil and crop residues. There is currently insufficient knowledge to allow reliable predictions of the effects of different residue types in different environments on soil fertility and crop growth, owing to the many residue characteristics and environmental interactions that have been shown to affect decomposition or nutrient release.

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41

White, Philip Lewis. "The effects of environmental warming on Antarctic soil microbial communities." Thesis, University of London, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.340641.

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42

Md-Rahim, Mohd Syazwan Bin. "Hydro-mechanical behaviour of a residual soil slope in Malaysia." Thesis, Durham University, 2016. http://etheses.dur.ac.uk/11689/.

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Climate change poses real threats to the sustainability of slopes, particularly in the tropical region of the world. Its effects have caused a greater occurrence of extreme climate events that are reflected in a greater occurrence of slope failure incidents for this region. The hydro-mechanical characteristics of soils linked with climate variation are factors that can explain deterioration in slope stability. Therefore, the ability to analyse the hydro-mechanical behaviour properly is worthy of investigation and this can be done by the use of experimental investigation and numerical modelling

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43

Richman, Jacinda. "Soil physical properties under the influence of different mechanical weeders." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0003/MQ44259.pdf.

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44

Folly, J. P. W. "Thermo-hydro-mechanical behaviour of unsaturated soil : an experimental study." Thesis, Cardiff University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.544368.

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Experimental investigation of the behaviour of unsaturated soils is a key component in the analysis and design of a wide range of geoenvironmental problems. Furthermore, in some circumstances the influence of temperature variation needs to be considered in addition to the hydraulic and mechanical behaviour. Notwithstanding the significant theoretical and numerical developments, experimental determination of Thermo-Hydro- Mechanical (THM) soil properties remains a challenge. Consequently, in order to address these problems this thesis presents the design and development of two Temperature and S

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45

Jameson, Robert N. J. (Robert Nicholas James). "Mechanical properties of soil cement and applications in excavation support." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/10658.

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46

Duckett, Natasha-Rass. "Development of improved predictive tools for mechanical soil root interaction." Thesis, University of Dundee, 2014. https://discovery.dundee.ac.uk/en/studentTheses/8bf8f2d1-f50a-4c5d-aabc-737b693fb37f.

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Plant roots can stabilise a soil through two key mechanisms, namely: mechanical interaction and suction (drawing water from the soil). As a result, they offer a sustainable alternative to traditional soil stabilisation techniques, such as soil nailing or piling, and are becoming increasingly sought after as concerns for global climate change increase. In practise, however, use of vegetation in infrastructure (termed bioengineering) is little used due to a lack of understanding of root functions and, therefore, a lack of confidence from engineers. Predicting the response of soil root systems to

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47

Uchaipichat, Anuchit Civil &amp Environmental Engineering Faculty of Engineering UNSW. "Experimental investigation and constitutive modelling of thermo-hydro-mechanical coupling in unsaturated soils." Awarded by:University of New South Wales. School of Civil and Environmental Engineering, 2005. http://handle.unsw.edu.au/1959.4/22068.

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A thermo-elastic-plastic model for unsaturated soils has been presented based on the effective stress principle considering the thermo-mechanical and suction coupling effects. The thermo-elastic-plastic constitutive equations for stress-strain relations of the solid skeleton and changes in fluid content and entropy for unsaturated soils have been established. A plasticity model is derived from energy considerations. The model derived covers both associative and non-associative flow behaviours and the modified Cam-Clay is considered as a special case. All model coefficients are identified in te

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48

Wan, Elysa (Elysa Q. ). "Musical interfaces : design and construction of physical manipulatives for musical composition." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/40935.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2007.<br>Includes bibliographical references (leaf 19).<br>Currently, musical composition is considered to be a high-level skill that is inaccessible to young children. There is a "high floor" for children who want to create a piece of music because they must learn a way of recording and remembering the notes, their sequence, etc, such as musical notation. Our project explores tangible designs that will make music composition simple to learn and practice while also building an intuition about complex musical

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49

George, Sarah Louise. "Composition and microstructure evolution in semi-solid cast Al-Zn alloys." Doctoral thesis, Faculty of Engineering and the Built Environment, 2010. http://hdl.handle.net/11427/33596.

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Semi-solid metal casting produces a low porosity, globular microstructure, which makes it an attractive competitor to wrought parts. This research explores the suitability of utilising heat treatable, Al-Zn-Mg-Cu alloys for the production of high strength parts for the automotive and aerospace industries, using the semi-solid metal rheocasting process. The process results in segregation, arising from non-equilibrium solidification, thus placing high demands on the post-solidification homogenisation and solution heat treatments, in order to derive optimum strength during subsequent ageing treat

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50

Golchin, Ahmad. "Spatial distribution, chemistry and turnover of organic matter in soils." Title page, contents and summary only, 1996. http://web4.library.adelaide.edu.au/theses/09PH/09phg617.pdf.

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Copies of author's previously published works inserted. Bibliography: leaves 260-299. This thesis describes the concept of organic matter turnover and various methods to measure the decay rates of organic materials in the soil. Methods are developed to separate SOM from different locations within the soil matrix. Free particulate organic matter (POM), located between or outside the soil aggregates is isolated. Occluded POM is disaggregeted by sonification. The compositional differences noted among the three components of SOM are used to describe the changes that OM undergoes during decompositi

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