Index Catalog // ScholarsArchive@OSU

Water content and electrical conductivity profile measurements for dispersive media using enhanced time domain and frequency domain models

Creator:: Flugstad, Benjamin A.
Abstract:: Water conservation and water quality are rapidly increasing in importance in all areas of the world. The ability to accurately measure soil water content and salinity, over a wide variety of conditions, is key to meeting this need. A set of forward prediction models and waveform interpretation algorithms to extract...
Resource Type:: Dissertation
Full Text:: algorithms to extract Volumetric Water Content (WC) and Electrical Conductivity (EC) profiles vs. position

Anaerobic co-digestion of acid whey and sewage sludge for enhanced renewable energy production

Creator:: Cole, Emerson
Abstract:: Acid whey is the largest byproduct of the dairy industry but to date has few useful applications and is frequently discarded as a result. However, acid whey has a high carbon content, making it a suitable co-substrate for anaerobic co-digestion with raw sewage sludge. The synergistic effect of co-digestion has...
Resource Type:: Honors College Thesis
Full Text:: Microsoft Word - EC Thesis - Acid Whey Co-Digestion.docx

Resource planning for a rare metals corporation using mixed integer goal programming and resource planning and management system

Creator:: Barneson, John
Abstract:: A system's analysis study utilizing Resource Planning and Management System network methodology, integer programming, and goal programming is presented. The integrated approach is developed and applied to the rare metals production process of the Oregon Metallurgical Corporation (OREMET). As defined by OREMET management, optimization of the production process required the...
Resource Type:: Masters Thesis
Full Text:: second two could not be met. Profit maximization attained a level of $333, 306 (over a one month time

Geostatistical applications to salinity mapping and simulated reclamation

Creator:: Al-Taher, Mohamad A.
Abstract:: Geostatistical methods were used to find efficient and accurate means for salinity assessment using regionalized random variables and limited sampling. The random variables selected, sodium absorption ratio (SAR), electrical conductivity (EC), and clay content were measured on samples taken over an area of fifteen square miles. Ordinary kriging and co-kriging...
Resource Type:: Dissertation
Full Text:: conductivity (EC), and clay content were measured on samples taken over an area of fifteen square miles

Some contributions to asymmetric error control codes

Creator:: Elmougy, Samir
Abstract:: In some practical systems, most of the errors are of 1 → 0 type and 0 → 1 errors occur very rarely. In this thesis, first, the capacity of the asymmetric channel is derived. The capacity of the binary symmetric channel (BSC) and the Z-channel can be derived from this...
Resource Type:: Dissertation

Weed management for giant reed (Arindo donax) biomass production in Oregon

Creator:: Attarian, Amir
Abstract:: Giant reed (Arundo donax L.) is a candidate to provide feedstock for the Portland General Electric power plant in Boardman, Oregon. Giant reed is a fast perennial grass, producing 23-27 metric tons ha⁻¹ of biomass and has the ability to adapt to diverse environments making it a good candidate for...
Resource Type:: Masters Thesis
Full Text:: for a 5% AYL, while for a 10% AYL, it started at 333 GDD and ended at 727 GDD. Based on the results

Temperature effects on Pacific oyster embryos subjected to spent sulfite liquor

Creator:: Will, Theodore
Abstract:: An exploratory study of 48-hour Pacific oyster embryo bioassays employing spent sulfite liquor (SSL) in test concentrations ranging from 10 to 45 ppm was made at two incubation temperatures, 20° and 24° C. Fourteen separate bioassays, each employing embryos originating from three to four different parentages, were conducted at the...
Resource Type:: Masters Thesis
Full Text:: toxicity decreases were computed as follows: Toxicity of ° 20 reduction EC 50 value at C 100 - (EC 50

Co-management of the shrimp fishery in Madagascar

Creator:: Rojat, Dominique, Rajaosafara, Sandy, and Chaboud, Christian
Abstract:: The shrimp fishery is a major export sector for Madagascar, yielding 10,000 tons per year and providing US$75 million in foreign exchange earnings. From the 1960s, it was managed through annual licenses allowing access to either exclusive or common fishing zones. In the mid-1990s, irregular and discretionary licensing, exacerbated competition...
Resource Type:: Research Paper
Full Text:: annual economic performance reviews. The GAPCM also dealt with compliance to EC sanitary regulations

Functional profiles of soil microbial communities in second-growth Douglas-fir forests of the Pacific Northwest

Creator:: McGinnis, Megan L.
Abstract:: Forests are one of the largest repositories of terrestrial C. Understanding factors that drive organic matter transformations and nutrient efflux from these systems is therefore highly important. Temperate forests are of particular significance due to the large fraction of C that is stored below ground in the soil. Characterizing nutrient...
Resource Type:: Masters Thesis
Full Text:: type. Abiotic factors such as CEC, 2 EC, and cation concentrations were correlated

Influence of nitrogen form ratio and calcium on greenhouse and field performance of watermelon

Creator:: Lamb, Michael J.
Abstract:: Watermelon (Citrullus lanatus (Thunb.) Matsum. & Nakai var. Crimson Sweet) was seeded in a commercial peat mix in multicell containers (72 cells-tray⁻¹, 40 cm³-cell⁻¹) in July 1989 and April 1990. In 1989, the medium was amended with CaC0₃ at 10% w:v. In 1990, no CaC0₃ amendment was made. Watermelon seedling...
Resource Type:: Masters Thesis
Full Text:: in plant growth with increasing Ca was greater in 1990 than 1989, due to higher medium EC

ScholarsArchive@OSU

Water content and electrical conductivity profile measurements for dispersive media using enhanced time domain and frequency domain models

Anaerobic co-digestion of acid whey and sewage sludge for enhanced renewable energy production

Resource planning for a rare metals corporation using mixed integer goal programming and resource planning and management system

Geostatistical applications to salinity mapping and simulated reclamation

Some contributions to asymmetric error control codes

Weed management for giant reed (Arindo donax) biomass production in Oregon

Temperature effects on Pacific oyster embryos subjected to spent sulfite liquor

Co-management of the shrimp fishery in Madagascar

Functional profiles of soil microbial communities in second-growth Douglas-fir forests of the Pacific Northwest

Influence of nitrogen form ratio and calcium on greenhouse and field performance of watermelon

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