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 29 for “"spat"”.
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Feasibility of Akoya pearl oyster culture in Queensland
… to settlement tanks. A total of 58 000 spat were subsequently transferred from settlement tank and resulted in 48 000 spat ranging in size from 2-30 mm at 3.5 months of age. These spat were produced using established protocols for other pearl oyster species. After 12 months, Akoya pearl …
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Enhancing the science return of Mars missions via sample preparation, robotic surface exploration and in orbit fuel production
… with complex Sample Preparation And Transfer (SPAT) facilities. Future rovers will need to be able to perform longer traverses and delicate sample acquisition operations. Mars return missions would benefit from a new propulsion system, with better fuel and travel time efficiencies than chemical …
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Early Recruitment of <i>Crassostrea virginica</i> to Restored and Natural Oyster Reefs in the Western Mississippi Sound: Larval Supply and Post-Settlement Success
… period, we quantified larval oyster supply and spat settlement at eight sites varying in region (inshore vs offshore) and background substrate (restored limestone, restored relic shell, historically unrestored substrates). Larvae were quantified relative to life cycle stage in addition to …
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Discovery and Characterization of the Polycomb Repressive Complex 1 of C. Elegans
… BMI-1, a core component of PRC1. I also identify SPAT-3A as a homolog of Ring1B, a partner protein of BMI-1 in the PRC1 core complex. Mig-32 and spat-3 mutants have some defects that overlap with those of mes mutants. However, unlike the mes mutants, mig-32 and spat-3 mutants are fertile, despite …
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Traffic Signal Phase and Timing Prediction: A Machine Learning and Controller Logic Hybrid Approach
… communication requires Signal Phase and Timing (SPaT) messages to be populated with most likely estimates of switching times and confidence levels in these estimates. Obtaining these estimates is difficult for actuated signals where the length of each green indication changes to accommodate …
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Understanding immune priming in Pacific oysters: A multi-omics exploration of transcriptomic, epigenetic and microbiome regulation
… bath exposure at either the larval or young spat stage, then challenged with the non-attenuated form of the pathogen at six months old. A multi-omics approach involving RNA-Seq, 16S amplicon sequencing and whole genome bisulphite sequencing was utilised to interrogate whether immune priming …
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Understanding immune priming in Pacific oysters: A multi-omics exploration of transcriptomic, epigenetic and microbiome regulation
… bath exposure at either the larval or young spat stage, then challenged with the non-attenuated form of the pathogen at six months old. A multi-omics approach involving RNA-Seq, 16S amplicon sequencing and whole genome bisulphite sequencing was utilised to interrogate whether immune priming …
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Utilising microalgal mixotrophy to maximise larval nutrition
… aims to double production. Reliance upon wild spat collection means that the industry is currently ‘at the mercy’ of spatially and temporally variable supply, with only 40% of spat collection sites producing sufficient larvae. One solution to this issue is to develop a larval hatchery; however, …
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DOES FAT MATTER? Lipidomics investigations during Blue mussel (Mytilus sp.) hatchery production
… could represent one solution to secure a spat supply to the growers, as it may reduce the reliance of the sector to unreliable natural spatfalls. Nevertheless, hatchery-produced seedlings are expensive, thereof, to ensure a cost-effective product, improvements of existing hatchery …
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Ecophysiology of the black mussel Choromytilus meridionalis (Krauss)
… of gamete material are emmitted annually, spat settlement at the study site is only successful at 4 to 6 year intervals. The population dynamics at different shore levels is described in detail.
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Eco-Cooperative Adaptive Cruise Control at Signalized Intersections Considering Vehicle Queues
… by receiving Signal Phasing and Timing (SPaT) data form downstream signalized intersections via vehicle-to-infrastructure communication. The algorithm that was developed in an earlier study provides advisory speed recommendations to drivers to reduce vehicle fuel consumption levels in the …
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Effects of illumination, shading and temperature on the settlement, survival and growth of juvenile abalone (Haliotis midae)
… stages and as a result the survival rates of spat are still low and variable. This prompted the design of three experiments to determine the best illuminance and water temperature conditions to maximize the settlement, growth and survival of H midae post-larvae. These experiments also …
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Vehicle Wheel Energy Reduction at Intersections using Signal Timing and Adaptive Cruise Control
… vehicle utilization of Signal Phase and Timing (SPaT) signals through simulated test cases of a vehicle system model using MATLAB. In each case, the tractive energy consumption and travel times are analyzed for both the Eco ACC system with Signalized Intersection Control Strategy (informed) …
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Native And Invasive Competitors Of The Eastern Oyster Crassostrea Virginica In Mosquito Lagoon, Florida
… competitors and thus my research focused on spatial competition between C. virginica and native versus invasive barnacles of the area. Over 300 barnacles, including a native species, Balanus eburneus, and an invasive, Balanus amphitrite, have been counted on a single oyster shell. To …
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Seasonal gonadal changes of adult oviparous oysters in Tomales Bay
… Bay, new shipments of adult oysters or oyster spat must be periodically sent from the east coast of the United States or from Japan. It is the purpose of this study to compare the seasonal gonadal changes which occur in the two species of adult oysters in Tomales Bay with one another, and to …
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Understanding The Variability Of Circulation And Water Quality At Experimental Oyster Leases In The Mississippi Sound Using A High-Resolution Nested Modeling Approach
… ranges of temperature and salinity for oyster spat age class. This eventually helps the policymakers and stakeholders to find suitable locations for oyster reefs under changing climate.</p>
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Experimental cultivation of the South African scallop Pecten sulcicostatus
… conditioning, larval rearing and the grow-out of spat. The reproductive study was undertaken by monthly collection of scallops in their natural habitat in False Bay from August 2004 - October 2005 and again from August 2010 - August 2011. The reproductive cycle was assessed by means of both …
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Eco-cooperative adaptive cruise control at multiple signalized intersections
… system utilizes signal phasing and timing (SPaT) information together with real-time vehicle dynamics data to compute the optimal acceleration/deceleration levels and cruise speeds for connected-technology-equipped vehicles while approaching and leaving signalized intersections, while …
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Field Evaluation of the Eco-Cooperative Adaptive Cruise Control in the Vicinity of Signalized Intersections
… that utilize signal phasing and timing (SPaT) data together with queue information to optimize vehicle trajectories in the vicinity of signalized intersections. The research presented in this thesis constitutes the third phase of a project that entailed developing and evaluating an …
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History and status of oyster exploitation and culture in South Africa, and the role of oysters as vectors for marine alien species
… is dependent on importing Crassostrea gigas spat mostly from Chile. Oyster production statistics are only available since 1985, but approximately two million Crassostrea gigas oysters were produced annually throughout the seventies and early eighties. Since then, production has fluctuated …
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