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 59 for “"hypersaline"”.
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Dominant substrates used by methanogens in hypersaline environments
… substrates also reported to be of importance in hypersaline environments: methanol (MeOH); dimethylsulfide (DMS); monomethylamine (MMA); and acetate. As expected, high concentrations of TMA and MMA stimulated methane production to a greater extent than the controls across the entire salinity …
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Identification of Quorum Sensing Genes in Hypersaline Microbial Mats
… and the QS phenomenon may be occurring in hypersaline microbial mats. These results also suggest that functional metagenomics can be used to study QS in the natural environment to better understand the role of QS in shaping the structure and functionality of different natural ecosystems.</p>
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An integrated geochemical and microbiological investigation of sulphate reduction in hypersaline pans
… a holistic picture of sulphate reduction in five hypersaline pans in South Africa. Sulphate reduction rates were determined using a radioactive tracer (35 So/-) technique. This was applied to determination of in situ sulphate reduction rates, the effect of increased salinity on the activity of …
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Optimization of culture conditions and extraction method for phycocyanin production from a hypersaline cyanobacterium
Submitted in fulfilment of the requirements of the degree of Master of Technology: Biotechnology, Durban University of Technology, Durban, South Africa, 2014.
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Membrane distillation for enhancement of mineral recovery: novel operating approached for desalination of hypersaline solutions
Includes bibliographical references (pages 53-55).
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Prokaryotic diversity and ecosystem functioning in hypersaline environment: a metagenomic study of the Cagliari salterns
Solar salterns are extreme environments of outstanding scientific interest, hosting highly specialized microbial communities shaped by steep physicochemical gradients. Despite the well-documented diversity of Mediterranean salterns, Sardinian systems remain largely unexplored. This study represents …
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Desalination systems for the treatment of hypersaline produced water from unconventional oil and gas processes
… well, is particularly challenging as it can be hypersaline, with salinities as high as nine times seawater. Typical disposal strategies for produced water, such as deep well injection, can be unfeasible in many unconventional resource settings as a result of regulatory, environmental, and/or …
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CHARACTERIZATION OF HALOPHILIC MICROORGANISMS AND SULFATE SALTS FROM THE HYPERSALINE LAKES OF BRITISH COLUMBIA, CANADA; AN ASTROBIOLOGICAL PERSPECTIVE
Based on geological evidence at Meridian! Planum, the loss of liquid water on Mars would have produced magnesium sulfate rich brines. The Basque Lakes of British Columbia, Canada, are an excellent terrestrial analogue for this site, as they possess highly concentrated brines fed by ground water …
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The formation and origin of carbonate minerals in the Darling and Yzerfontein hypersaline pans, Western Cape, South Africa
The Darling and Yzerfontein hypersaline pans are located on the western coastal plain of South Africa. The area has an arid, Mediterranean type climate. The carbonate minerals calcite and dolomite have precipitated in the pans through the evaporation and concentration of ions derived from …
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Fylogenetická diverzita kultivovatelných prokaryot z hypersalinních prostředí.
… diversity of culturable prokaryotes from hypersaline environments. Charles University, Faculty of Pharmacy Department of Biological and Medical Sciences University of Sevilla, Faculty of Pharmacy Department of Microbiology and Parasitology Study program: Pharmacy Hypersaline environments …
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Influence of Organic Matter Source, Abundance, and Growth Habit on Depositional Textures and Associated Pore Attributes of Hypersaline Lacustrine Microbial Deposits (Holocene, Bahamas)
… of Holocene microbialites in a small, shallow, hypersaline, alkaline lake in the southern Bahamas. The results of analyses reveal: systematic distribution of surface sediment, unlithified microbial mats, and microbialites; microbialite fabrics vary considerably on several scales, and porosity …
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Industrial brine characterisation and modelling
… This study focused on inorganic industrial hypersaline brines. Chemical engineering presents a variety of mechanical, thermal, biological and chemical processes capable of treating hypersaline brines to the standard required by legislation. However, some of these technologies are …
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Effects of hypersalinity on the behaviour, physiology and survival of commercially important North Sea crustaceans
Despite the increasing number of hypersaline discharges associated with desalination and, more recently, solute mining activities, there is little existing information relating to the effects such environmental disruptions may have on populations of commercially-important crustacean species. The …
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Industrial application of eutectic freeze crystallization
… currently generating increasing quantities of hypersaline brine streams. These wastewater streams need to be processed in an ecologically friendly and economically favourable method to produce both purified water and salts.
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Effect of salinity and environmental changes on the fish community of the St Lucia Estuarine System with focus on the salinity tolerance of Oreochromis mossambicus (Mozambique Tilapia)
… preceded by five years of low lake levels and hypersaline conditions which greatly reduced marine fish species diversity. Regardless of this, the freshwater tilapia, Oreochromis mossambicus has been found in abundance in all parts of the system. This indicates that O. mossambicus is capable of …
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Depositional History and Petroleum Potential of the Middle Devonian Fort Vermilion Formation, Alberta
… environments were identified: restricted and hypersaline, early diagenetic, moderately restricted, and euhaline. Three models, differing primarily on scale and proximity to the marine environment are discussed; these are: i) salina; ii) restricted lagoon; and iii) lake. The evidence garnered …
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Carbonate microfacies, depositional models and diagenesis of the Middle Devonian in Illinois, eastern Iowa and Missouri
… recognition of twelve normal marine and twelve hypersaline microfacies. The vertical succession and statistical analysis of microfacies permitted recognition of four ideal shallowing-upward sequences which were converted into horizontal depositional models.
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Depositional environments and diagenesis, Interlake Formation (Silurian), Williston Basin, North Dakota
… found associated with supralittoral rock types, Hypersaline pond subenvironments of littoral flat complexes are represented by rocks that contain intraclasts, hypersaline ooids, and transported skeletal debris. Paleosols are classified as calcretes and ferricretes and display severe alteration …
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Development of a brine treatment protocol using Eutectic Freeze Crystallization
Hypersaline inorganic brines are generated from many global mining operations and the volume of these brines is increasing at an exponential rate. The environment and water resources in the vicinity of these mining operations are at a risk of being polluted as a result of this increase in brine …
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