Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 547 for “"mineralization"”.
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Benthic mineralization and microscale heterogeneity
Traditionally, marine sediments are viewed as horizontally layered structures. However, in recent decades there has been growing awareness of the naturally occurring microscale heterogeneity affecting the biogeochemical functioning. Studies on microscale dynamics have been facilitated by recent …
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CO₂ Mineralization Using Reactive Species
… temperatures, e.g., 40°C. The kinetics of mineralization and the %M°? ion utilization varies depending on energy dissipation rate, temperature, pH, and NaCl concentration. The maximum M°? ion utilization achieved was 86%. Thermodynamic calculations were carried out to construct the species …
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Active Interfaces: From Biointerfaces to Mineralization
Novel technologies that can help adapt to and mitigate climate change are needed. In this thesis, we develop three different technologies that tackle climate change from different angles. First, a fundamental study is conducted on a novel boiling droplet self-propulsion phenomenon that occurs when …
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Time-Space Relationships between Sediment-Hosted Gold Mineralization and Intrusion-Related Polymetallic Mineralization at Kinsley Mountain, NV
… resulted in similar looking alteration and mineralization. Kinsley Mountain lies approximately 150 km east of the majority of large CTGDs in Nevada. SHGDs, intrusion-related tungsten skarn, and polymetallic carbonate replacement vein deposits have been mined from Kinsley Mountain, proximal …
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Assessing the variability of soil nitrogen mineralization
… season, the spatial and temporal pattern of N mineralization was assessed on two central Kansas corn fields. Net N mineralization was measured in the field using a buried bag and a resin core method. A 60 m sampling grid was established on the field and the N mineralization was measured at each …
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Mineralization at the Eustis Mine, Eustis, Quebec
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Geology, 1934
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Chemical weathering of sulfide mineralization on Mars
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1990.
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The Distribution of Bone Sialoprotein in Bone Mineralization
… are thought to have an active role in bone mineralization. The RGD region has been shown to bind integrins on the surface of osteoblasts. The negative charge of the glutamic acid regions can bind to HA crystals and also may attract calcium ions that are incorporated into the HA crystals. BSP …
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Biological and biomimetic mineralization via protein nanoribbon scaffolds
Understanding how protein scaffolds direct mineral morphogenesis is crucial for engineering bone and tooth and would open new vistas in hybrid materials design. In the case of tooth enamel, which is the hardest tissue in the body and consists of organized bundles of coaligned filamentous apatite …
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Cellulose mineralization in two-stage anaerobic digestion systems
<p>The objective of this research was to evaluate the anaerobic degradation of a simulated high-strength solid waste/sludge, particulate cellulose, by two-stage anaerobic digestion systems. Cellulose hydrolysis and methanogesis were examined in both the thermo-meso and acid-methane two-stage …
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Bioinspired mineralization in hydrogels for sustainable materials processing
… emerging relevance of green chemistry make biomineralization an even more attractive process to study. In this thesis, we focus on the earlier stages of mineral nucleation and growth, where the organic, hydrogel-like matrix dominates the bulk of the material and the mineral is distributed …
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Biologically Controlled Mineralization and Demineralization of Amorphous Silica
… depth of this problem, as it pertains to biomineralization, is related to the small number of existing studies focused on the development of a mechanism-based understanding of intracellular mineralization processes. Molecular biologists and geneticists have only begun to turn their attention …
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Solid-Binding Peptides Enable Biomolecular Surface Assemblies and Mineralization
… interactions and their pathways to mineralization still eludes us. Our lab’s research delves into genetically designing and engineering peptides that have an affinity for solids with the purpose of using them as molecular building blocks in materials synthesis, assembly, and …
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Mineralization and Wall Rock Alteration Flin Flon area, Saskatchewan
… classed as a sulphide replacement deposit. The mineralization occurs along fissures in volcanic rocks of the Amisk group and in post-Missi intrusions. The minerals were deposited from hydrothermal solutions. Metallic mineralization and wall rock alteration took place at intermediate to high …
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Wall rock alteration accompanying Canadian Pre-Cambrian gold mineralization
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Geology, 1935
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Gold-quartz vein mineralization in Stanly County, North Carolina
Gold occurrences in the Stanly County area were first found in 1799. Gold-bearing quartz veins, typical of those found in many parts of the Appalachians, have been studied at the Cotton Patch, Mountain Creek, Parker, Gold Hill, and Coggins mines. The veins are sharply defined, near-vertical, and …
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Mineralization of Nitrogen in Liquid Dairy Manure During Storage
… use N in an efficient and eco-friendly manner. N mineralization is a pathway in the N cycle, which converts organic N to inorganic N that is more susceptible to loss. The objective of this study was to conduct lab-scale experiments to assess the effects of temperature, manure solids content, using …
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Microbial ecology of anaerobic carbon mineralization in Namibian shelf sediments
… a complete process overview of organic carbon mineralization could be obtained.Firstly, the diagenetic transformation of dissolved organic carbon (DOC), in particular dissolved carbohydrates, was studied by using both biogeochemical methods and molecular techniques. The bulk sediment …
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Effect of Cooling Rates on Mineralization in Portland Cement Clinker
The rate at which cement clinker is cooled as it exits the kiln has long been known to be an important factor in cement quality. Cooling rate is one of the variables that has a significant impact on the minerals produced during the cement making process. The goal of the industry has been to produce …
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Indirect Tissue Scaffold Fabrication via Additive Manufacturing and Biomimetic Mineralization
… which material is the most appropriate for mineralization and sintering. Mineralization is improved through plasma surface treatment and dynamic flow conditions. Appropriate burnout and sintering temperatures to remove pattern material are determined experimentally. While the "tube …
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