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 62 for “"Volume reduction"”.
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Lung volume reduction surgery : the Groote Schuur experience
From recent statistics (79,59) it has been concluded that COPD is the most common lung disease in the United States affecting almost 16 million people. The mortality is rising, COPD is the fourth most common cause of death in USA after myocardial infarctions, cancer and stroke (91). COPD is clearly …
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Mode Volume Reduction in Single Crystal Sapphire Optical Fibers
This research provides the original work on the geometry factors selection for single crystal sapphire optical fiber (SCSF) to improve the optical property in sensing applications. Single crystal sapphire fibers were fabricated with a Laser Heated Pedestal Growth (LHPG) system, which was …
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The Effectiveness Of A Specifically Designed Green Roof Stormwater Treatment System Irrigated With Recycled Stormwater Runoff to Achieve Pollutant Removal and Stormwater Volume Reduction
… pollutants from stormwater runoff and reduce the volume of stormwater runoff leaving developed areas. The green roof properties of interest are the filtration and biological processes as well as the roof's ability to hold water and increase evapotranspiration, reducing the volume of stormwater …
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Determination of Vapor-Liquid Equilibrium Data and Decontamination Factors Needed for the Development of Evaporator Technology for Use in Volume Reduction of Radioactive Waste Streams
Made available in DSpace on 2017-07-06T18:42:26Z (GMT). No. of bitstreams: 3 Betts_Stephen_E_MS.pdf: 68176287 bytes, checksum: 3a26178b02427c3442ea1efedb3ac5db (MD5) Betts_Stephen_E_MS_ABS.pdf: 548796 bytes, checksum: c36e7536a0982505788643376072ca8c (MD5) license.txt: 4813 bytes, checksum: …
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Investigating best management practices to reduce selenium and nitrate contamination in a regional scale irrigated agricultural groundwater system: Lower Arkansas River Valley, southeastern Colorado
… of Se and N species. Specific BMPs include reduction in the seasonal application of N fertilizer; decrease in concentration of selenate (CSeO4) and nitrate (CNO3) in canal water, representing treatment of water before application as irrigation water; reduction in irrigation application …
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Predicting Field Water Balance, Crop Yield, and the Economics of Drainage Under Various Cropping Systems Using Drainmod
… conservation practices in reducing drainage volume and nitrate losses. Six experimental plots, under corn-soybean rotation, divided into drained and undrained plots, were monitored for baseline data (i.e. drainage discharge, water table depth, infiltration, bulk density, and rainfall) …
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Magnetic Resonance Imaging of Cerebral Venous Oxygenation
… in hypertensive group alone. Moreover, the volume reduction in hippocampus and thalamus is correlated with decreased regional Yᵥ. The findings presented are consistent with previous literature on the targeted hypofusion and volume reduction in these regions. Imaging marker Yᵥ reported here …
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A framework for designing and optimizing green infrastructure network under uncertainty
… models, to estimate life cycle cost, stormwater volume reduction and treatment, and air pollutant deposition. The tool was applied in two small watersheds in the Baltimore metropolitan area. The results show that GI properties do not significantly affect performance of individual GI practices …
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Discovery of Novel Mechanisms Regulating Cancer Extravasation in the Chorioallantoic Membrane Model
… prostate cancer cells exhibited significant cell volume reduction. This reduction is suggestive of an invasive cell phenotype. However, cell volume reduction at certain threshold also decreased cancer cell extravasation efficiency. I also found that cancer cell released extravascular vesicles …
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Design for Testability Techniques to Optimize VLSI Test Cost
High test data volume and long test application time are two major concerns for testing scan based circuits. The Illinois Scan (ILS) architecture has been shown to be effective in addressing both these issues. The ILS achieves a high degree of test data compression thereby reducing both the test …
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Design and manufacture of a low-cost mechanism for compacting used oil filters
… to determine crushing geometries to improve volume reduction for a given load. As a result, a sample system is designed and presented which is estimated to achieve at least 15% compaction of used filters using only 1000 lb-force for less than $200 in retail parts.
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Electric Field Grading and Electrical Insulation Design for High Voltage, High Power Density Wide Bandgap Power Modules
… to the trend towards higher "blocking voltage", volume reduction has been targeted for WBG devices. The blocking voltage is the breakdown voltage capability of the device, and volume reduction translates into power density increase. This leads to extremely high electric field stress, E, of …
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Investigation into the Processing Parameters of Phosphate-based Dechlorination of Electrorefiner Salt Waste
… is a crucial step in waste processing for volume reduction. The technique for recycling chlorine can be applied to waste from our current fleet or reactors, as well as advanced reactors in which pilot-scale facilities are currently being evaluated. In this study, a procedure was developed …
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Determination of soluble mineral content in Las Vegas soils
… soils containing soluble minerals can cause a volume reduction of the soil which in turn causes structural stress. Soil improvement recommendations for soluble soils are based upon the amount of soluble minerals of a parent soil. This study reports the results of research to develop a …
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Anaerobic co-digestion of municipal solid waste and sewage sludge.
… digestion possesses the optimal combination of volume reduction, probability of success and potential for both energy and resource recovery. An innovative application of anaerobic processes is the co-digestion of sewage sludge and the organic fraction of municipal solid waste (OFMSW). The …
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Compact Leaky Wave Antenna Using Ferroelectric Materials
… wave antennas suffered from their excessive volume and the required wide range of operating frequency (bandwidth) to achieve a large tuning angle. To circumvent these challenges, research in this thesis is focused on implementation of material (like PZT) with high dielectric constant (k) in a …
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Novel nanolasers, nano-LEDs, and modal cutoff confinement light emitters
… of metal-DBR cavities are fabricated with cavity volume reduction both in the lateral and vertical dimensions following our theoretical design rules to optimize the performance. One of the smallest electrical injection lasers is demonstrated with a minimum diameter of 1-m and a minimum hybrid …
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Geotextile Tubes and Their Application to Dewatering
… cycles of filling with slurry and subsequent volume reduction of the slurry within the tube. This process results in a final volume containing an increased concentration of solids. Previous studies by Satyamurthy and Bhatia, and Sieck and Pickett, have generated calculations that developed …
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The effects of secondary air injection on particulate matter emissions
… operating conditions and secondary air rates. PM reductions were observed for the engine conditions and SAI flow rates that were tested. The maximum particle number reduction achieved was 80%. Particle number and particle volume reduction were observed to correlate well with exhaust enthalpy …
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EFFECT OF MAJOR FACTORS ON BIOSWALE PERFORMANCE AND HYDROLOGIC PROCESSES FOR THE CONTROL OF STORMWATER RUNOFF FROM HIGHWAYS
… the performance of bioswales for stormwater volume reduction. The ratio of the installed BMP area to its service drainage area, characteristics of precipitation and the amount of sediment build-up over the surface of the BMP area are among the most important factors. Earlier studies have …
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