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 373 for “"Low grade"”.
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The Utilization of Low-grade Carbohydrates
… for the production of "biomass" directly from low-grade starch containing materials could have widespread application. Experimental work was carried out using a Continuous Tower Fermenter System, cultures of Aspergillus niger M1 and three types of media. These were based on potato starch/salts …
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Beneficiation of low grade washed brown iron
Electronic Thesis
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The experience of low grade and pituitary tumours
Low grade brain tumours make up approximately 45% of all brain tumour diagnoses each year in the UK, of which 10% are pituitary tumours. People with low grade and pituitary tumours can experience a wide range of physical, psychological and cognitive difficulties. Studies have reported mixed results …
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Differential flotation of low grade gold pyrite ores
Includes bibliographical references.
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A resetting of paleoremanence in low-grade metavolcanics,
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Earth and Planetary Science, 1974.
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Variations in low-grade wood modification and stress lamination
… are relatively fast-growing trees, yielding low-grade wood that is incompatible with standards for glue-based lamination. Alongside this forecasted increase, there is a major worldwide shift towards building taller and faster with massive laminated and engineered wood products, mainly as …
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Low-grade Thermal Energy Harvesting and Waste Heat Recovery
Low-grade heat, either in the form of waste heat or natural heat, represents an extremely promising source of renewable energy. A cost-effective method for recovering the low-grade heat will have a transformative impact on the overall energy scenario. Efficiency of heat engines deteriorates with …
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Acute, Low-Grade Inflammation elevates White Matter Sensitivity to Ischaemia
… highly prevalent neurological diseases. Acute, low-grade inflammation, often resulting from peripheral infection, has emerged as a risk factor. White matter axons, and their supporting glia, are susceptible to both ischaemic and neuroinflammatory injury. The mechanisms behind ischaemic injury in …
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Recovery of copper from low-grade ores by Aspergillus niger
… technique to recover metals from oxide low-grade ore microbially. Owing to the large quantities of metals that are embodied in low-grade ores and mining residues, these are considered new sources of metals. On the other hand they potentially imperil the environment, as the metals they …
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Added-value chemicals from secondary and low-grade primary sources
… been recovered from a variety of secondary and low-grade primary sources. Processing the leach solution directly to recover metals has the advantage over the conventional metal salt recovery system which usually requires the expensive chemical purification steps to get high added-value …
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Low-grade aldehyde stress protects mice from diet-induced obesity
… *in vivo*, I find that mice subjected to low-grade endogenous aldehyde stress are resistant to obesity and onset diabetes induced by high glucose and fat dietary challenges. This protection is mediated by GDF15, a hormone that is elevated in response to endogenous formaldehyde stress when …
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Toll-Interacting Protein Regulation of Low-grade Non-resolving Inflammation
… of LPS, it acts as a positive regulator for low-grade chronic inflammation in leukocytes programmed by subclinical low-dosages of LPS. We aim to show recent progress in our understanding of complex innate leukocyte dynamics and its relevance in the pathogenesis of resolving versus …
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Long-Term Neuropsychological Effects in Survivors of Pediatric Low-Grade Gliomas
Statement of the problem: Survival rates of low-grade gliomas (diagnosed and treated during childhood) have improved resulting in a population of long-term survivors, albeit with limited knowledge of their neurocognitive function, quality of life, and adaptive function. Methods: Patients treated at …
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Energy harvesting of low-grade waste heat with colloid based technology
L'abstract è presente nell'allegato / the abstract is in the attachment
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Low-grade heat conversion into electricity by thermoelectric and electrochemical systems
… cost effective technologies that convert low-grade heat into electricity is essential to meet the increasing demand for renewable energy systems. Thermoelectric and recently emergent electrochemical heat conversion devices are promising candidates for this purpose. However, current …
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A clinicopathological and molecular genetic analysis of low-grade glioma in adults
… markers that can determine progression of low grade glioma. This was done using various approaches such as IDH1 and IDH2 mutation analysis, MGMT methylation analysis, copy number analysis using array comparative genomic hybridisation and identification of differentially expressed miRNAs …
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Hydrometallurgical extraction of platinum group metals from a low-grade ore concentrate
… group metals (PGMs) and base metals (BMs) from a low-grade ore concentrate produced in the concentrator plant at Lonmin Pic. The PGMs of particular interest are platinum, palladium, ruthenium and rhodium, while the BMs of interest are copper and nickel. The ore concentrate, as a by-product, …
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Fuel-NOx Formation during Low-Grade Fuel Combustion in a Swirling-Flow Burner
… tests in a pilot-scale (0.2 MW), swirling flow burner. Two-dimensional gas species mole fraction data were collected with state-of-theart instruments from nine experiments, composing one herbaceous biomass (straw), one woody biomass (sawdust), a low sulfur sub-bituminous coal (Blind Canyon) …
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Mineralogical effects on the dense medium separation of low grade nickel sulfide ore
… separation (DMS) is a method often used to upgrade base metal sulfide (BMS) ores before their main processing stage, with varying results achieved for different ore types. The process makes use of the density differences between the BMS minerals and the lower density silicate/carbonate gangue …
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Microwave Vacuum Carbothermic Reduction and Sulphidation of a Low Grade Nickeliferous Silicate Laterite Ore
… nickel laterite ore that would produce a higher grade of nickel than current industrial techniques. Microwave Vacuum Reduction Processing (MVRP) of a nickeliferous silicate laterite ore, followed by magnetic separation was performed. The variables investigated included: processing time, microwave …
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