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 771 for “"algal"”.
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The Use of Algal Assays to Evaluate Algal Biomass in Regulated Streams
… This study was undertaken to evaluate the algalgrowth potential of the Des Moines River as it passes through Saylorville and Red Rock Reservoirs. Procedure. The test organism, "Selenastrum capricornutum" Printz, was grown in an algal assay which used various additions of nutrient spikes to …
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Marinobacter as an algal panacea?
… Although research has been conducted on algal-bacteria interactions and bacteria-bacteria interactions, little is known about how bacteria interact with industrially relevant algae, and how these interactions function in more complex'systems.<br/>
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Adsorbent-based algal cultivation system to facilitate integration of algal biofuel production with wastewater treatment
… First, the treatment performance of an algal wastewater system is less stable than current systems using aerobic heterotrophic bacteria. For instance, Garcia et al. (2005) showed significantly increased effluent ammonia concentrations during the nighttime. Secondly, the turbidity of …
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Characterisation of Algal Derived Organic Nitrogen
The molecular level characterisation of compounds comprising the dissolved organic nitrogen (DON) pool is an important task for chemical oceanographers wishing to understand its role in the marine N cycle. Low DON concentrations, problems with saline matrices and a lack of pre-concentration methods …
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Advancing algal biotechnology for food application
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2027-08-01
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Effects of Short-Term Dewatering on Grazer Abundance and Algal Biomass in a Wastewater Treatment Algal Turf Scrubber
… conversion of solar energy into chemical energy. Algal turf scrubbers (ATS™) systems mimic natural streams, flowing wastewater over hard substrates designed to encourage attached algae growth. This study focuses on the use of replicated ATS™ systems, because they are low maintenance, are effective …
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Lake Benthic Algal Production and Extracellular Material
… with in situ photosynthesis and was affected by algal community composition, whereas tightly bound capsular extracellular material was affected only by date, indicating that capsular material is refractory in lakes just as it is in marine systems. Contrary to what is seen in marine systems, …
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Algal sludge disposal in waste-water reclamation
… from raw sewage stabilization lagoon effluent. Algal sludge produced by the treatment facility was investigated: (1) to evaluate its potential as a soil conditioner; (2) to determine whether a stabilization lagoon could be used for algal sludge disposal; and (3) to determine whether or not …
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Mechanical algal disruption for efficient biodiesel extraction
… microbubbles to improve mechanical disruption of algal cells using experimental, theoretical, and computational methods. New laboratory experiments show that effective ultrasonic disruption of algae is achieved by adding microbubbles to an algal solution. The configuration studied flows the …
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Screening of algal cells using microdroplet technology
… the need for a more in-depth study of algal cells at the single cell level. Droplet microfluidics has been established as a multifunctional platform, with many advantages for the study of biological systems in the microscale. In this thesis, droplet microfluidic technology was used to …
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A dynamic engineering model of algal cultivation systems
Proper assessment of the sustainability of algal products is constrained by the onerous process of pilot-scale experimental study. This study developed a bulk growth model that utilizes strain characterization, geospatial data, and cultivation platform geometry to predict productivity across …
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Predicting estuarine algal blooms using artificial neural networks
… a tributary of the Hawkesbury River, NSW. Algal blooms in this estuary are a regular feature of seasonal cycles and develop in response to non-periodic disturbances. Toxic algae, mostly Dinophyta, have led to fish kills and estuary closure. Most non-toxic algae present are from the division …
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Carbon Limitation in Periphytic Algal Wastewater Treatment Systems
… discharged to receiving waters, they stimulate algal blooms. Algal blooms can reduce dissolved oxygen, block sunlight for submerged aquatic plants, and render state waters unusable for recreational activities; these issues can negatively impact ecological systems and local economies. One …
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The bio-optical detection of harmful algal blooms
… algorithm designed for the detection of harmful algal blooms. The adopted framework focuses on establishing quantitative relationships between optically important algal intracellular properties and inherent optical properties (IOPs), such as the absorption and backscattering coefficients, and the …
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Marine algal virus communities along Southern African coasts
… interaction around the tip of South Africa. Algal blooms are known to proliferate predominantly off the nutrient - rich west coast, however, sporadic inshore upwelling on the east coast can also illicit these events. In addition, solar salt - pans located on the coast that draw their water …
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Modeling algal growth dynamics in steady state systems.
Thesis. 1976. M.S.--Massachusetts Institute of Technology. Dept. of Civil Engineering.
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Nitrogen nutrition of harmful algal blooms in upwelling systems
Blooms of toxic, or otherwise harmful phytoplankton species are known to occur in eastern boundary upwelling systems, coincident with the relaxation of upwelling in late<br/>summer/autumn. Field studies were carried out in 3 consecutive summers (March/April 06-08)<br/>in the Benguela and in the …
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