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Showing 1 to 20 of 23 for “"raceways"”.
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Variations of Vibrio Populations in Pacific White Shrimp, <i>Litopenaeus vannamei</i>, Aquaculture Raceways
<p>Reducing incidence of vibrioses in intensive aquaculture systems is essential to maintaining yields. This study performed real-time qPCR (quantitative polymerase chain reaction) using primers targeting 16s rDNA sequences for total bacteria, the <em>Vibrio</em> genus, and <em>Vibrio …
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Testing and analysis of a novel spur gear design using double integral bearing raceways
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1996.
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Comparison of Water Quality, Rainbow Trout Production, and Economics in Oxygenated and Aerated Raceways
… higher (P < 0.001) in the oxygenated raceways (9.5 and 2.75 mg/L, respectively) compared to aerated raceways (7.4 and 0.57 mg/L). Total settleable solids loads were significantly greater (P < 0.001) in aerated raceways (10.3 g/L/day) than in oxygenated raceways (8.8 g/L/day). Dissolved …
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Carbon and Nitrogen Dynamics in High Intensity Minimal Exchange Shrimp (<i>Litopenaeus vannamei</i>) Raceways
<p>Three separate shrimp (<em>litopenaeus vannamei</em>) growouts were examined at The University of Southern Mississippi's Thad Cochran Marine Aquaculture Center. The objectives of this project were to (1) determine if there was a significant difference in any water quality parameters between the …
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Effects of repetitive electroshocking on fish populations in experimental raceways and a small headwater stream in southern West Virginia
… were electroshocked daily for 10 days in raceways with sand, gravel, cobble and boulder/bedrock substrates. Actual combined population levels declined 17.2 percent over the study period. Average daily depletion estimates closely reflected this change; however, single census techniques …
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The potential for Gracilaria polyculture at Jacobs Bay Sea Products Pty
… Land based systems can make use of ponds, raceways or tanks. Tanks and raceways are more productive than ponds, but require higher flow rates and regulated nutrient regimes.
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Microorganisms associated with ulva grown in abalone effluent water: implications for biosecurity
… seawater tanks and abalone effluent wastewater raceways. The water samples were collected at the inlets and outlets of each tank/raceway and the Ulva was collected from within each system. The culture-based approach utilised three selective media for the isolation and quantification of …
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Evaluation of rolling contact fatigue resistance for coated components
… of the rolling contact fatigue of coated bearing raceways under the oil lubricant, grease lubricant and no lubricant conditions, applying the new rolling contact fatigue evaluation mechanisms, evaluation technique principles and the new test machine, have been performed. The accelerated rolling …
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Effects of Raceway Pond Water and Nutrient Recycling on Microalgae Production and Harvesting
… of water and nutrient recycling, using pilot raceways and tubes settler tanks fed municipal wastewater.</p> <p>Two control raceway sets and two types of water and nutrient recycling raceway sets were operated concurrently. Each set was comprised of duplicate raceways (33-m<sup>2</sup> surface …
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Microbiome associated with Ulva lacinulata and seawater in an integrated abalone (Haliotis midae)–Ulva system with partial recirculation
… farms in South Africa grow Ulva in D-ended raceways to bioremediate farm effluent water, allowing water to be recirculated back to the abalone, while Ulva is often used as a supplementary feed source. Despite Ulva's versatility in integrated multi-trophic aquaculture (IMTA) systems, there …
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Biorrefinería microalgal destinada a la producción sustentable de aceites óptimos para biodiésel y sílice amorfa como un co-producto de valor agregado
… abierto; 2) desarrollar cultivos en piletas raceways a cielo abierto; 3) definir estresores para la acumulación de TAG; 4) determinar cantidad y calidad de lípidos; 5) estimar propiedades del biodiésel; 6) realizar un seguimiento ultraestructural de la acumulación de TAG en cultivos a cielo …
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Enhancing CO2 mass transfer in large scale algal raceway ponds through wave generation
… carbon source for autotrophic algal growth in raceways is typically atmospheric CO2. The rate at which this enters the system is based on the concentration gradient at the gas/liquid interface. The addition of slopes aims to increase the turbulence in areas of the raceway systems with low CO2 …
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CFD-DEM MODELLING OF PARTICLE-GAS REACTIVE FLOWS AND ITS APPLICATION IN BLAST FURNACE REGIONS
… of a middle raceway between two adjunct raceways are captured from a 3D perspective for the first time using the above proposed model. The effects of blast velocity and temperature on raceway dynamics and combustion are quantified. After that, the key parameters for accurately simulating …
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Numerical Modelling of Ball Bearing Stiffness to Predict Contact Stress Caused by Vibration Induced Gapping
… can cause indentation damage on the ball and the raceways, and may lead to malfunction of the bearing, and therefore the mechanism the bearing forms a part. Previous studies have develop a 2-DOF model in order to predict gapping using for the calculation, the bearing stiffness predicted by a …
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Integrated Aeration for Enhanced Nitrogen Conversion and Removal and the Effect of Sampling Frequency on Productivity Estimates in Algae-Based Wastewater Treatment Systems
… (DO) common in wastewater treatment raceways. The large diel difference in pond conditions and changing influent wastewater quality also raises the question of the optimal frequency and timing of grab sample collection, to obtain representative water quality data. Three sets of …
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Biomass productivity enhancement and extraction of high values products of an extremophile microalga from SCCA culture collection
… with viable exploitation in large-scale plants (Raceways) for several biotechnological applications. Coccomyxa melkonianii SCCA 048, belonging to the Sardinian Culture Collection of Algae (SCCA), is a green extremophile microalga found in a mine drainage habitat and characterized by the ability …
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On the Thermally Induced Failure of Rolling Element Bearings
… traction coefficient between the rollers and the raceways. The validity of this dynamic model is verified by comparing the simulation results with the previously published experimental results. The simulation results show that the simplified traction curves can be utilized in dynamic simulations …
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The Effect of Pretreatment Methods on Methane Yield and Nutrient Solubilization During Anaerobic Digestion of Microalgae
… by sedimentation from outdoor wastewater-fed raceways ponds operated in coastal southern California. Four pretreatment methods (sonication, high-pressure homogenization, autoclaving, and boiling) were used on the algae slurries, each followed by batch anaerobic digestion (40 days at …
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The Future of Biofuels: An Economic Analysis of the Design and Operation of a Microalgae Facility in Texas and the Southwestern United States
The world of energy is changing. With rising energy costs and concerns over the supply of energy materials, more research is being conducted into alternative sources of fuel and microalgae is one of the sources being researched, although much research had been conducted on it as a part of the …
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Heat Transfer and Flow in Solar Energy and Bioenergy Systems
… (CSP) plants and open-channel algal culture raceways for biofuel production. The first part of this dissertation is the discussion about mathematical modeling, numerical simulation and experimental investigation of solar TES system. First of all, in order to accurately and efficiently …
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