Electrochemical control of pH in a hydroponic nutrient solution

The electrochemical pH control system described was found to provide a feasible alternative method of controlling nutrient solution pH for CELSS applications. The plants grown in nutrient solution in which the pH was controlled electrochemically showed no adverse effects. Further research into the design of a larger capacity electrode bridge for better control is indicated by the results of this experiment, and is currently under way

Design of an elemental analysis system for CELSS research

The results of experiments conducted with higher plants in tightly sealed growth chambers provide definite evidence that the physical closure of a chamber has significant effects on many aspects of a plant's biology. One of these effects is seen in the change in rates of uptake, distribution, and re-release or nutrient elements by the plant (mass balance). Experimental data indicates that these rates are different from those recorded for plants grown in open field agriculture, or in open growth chambers. Since higher plants are a crucial component of a controlled ecological life support system (CELSS), it is important that the consequences of these rate differences be understood with regard to the growth and yield of the plants. A description of a system for elemental analysis which can be used to monitor the mass balance of nutrient elements in CELSS experiments is given. Additionally, data on the uptake of nutrient elements by higher plants grown in a growth chamber is presented

An Investigation For Viable Seeds In The Surface Soils of Various Sites In A Mixed Prairie Near The Cedar Bluff Reservoir

The purpose of this study was to determine what species of plants emerge from samples of surface soils taken from various sites in a mixed prairie at the Cedar Bluff Reservoir

Madrigal Singers

Kemp Recital Hall Tuesday Evening April 25, 1995 8:00p.m

Concert Choir

Kemp Recital Hall Friday Evening March 27, 1992 8:00p.m

Concert Choir Madrigal Singers

Wesley United Methodist Church Bloomington Sunday Afternoon October 31, 1993 3:00p.m

Spelling Rules As An Effective Factor In Seventh And Eighth Grade Spelling Achievement

The problem of this study is to investigate the spelling achievement of seventh and eight grade pupils in both the graded elementary and rural schools of Western Kansas

Madrigal Singers Concert Choir

Kemp Recital Hall Monday Evening April 25, 1994 8:00p.m

Are you better off than you were before the disaster: Examining how natural disasters impact growth rates

Research on the impact of natural disasters, while young, is starting to take shape as a field of study in political science. Already, a range of studies and methods have been produced, examining the varying effects of different types of disasters on economic growth. This thesis investigates the relationship between disaster frequency and economic growth rates for 127 countries over a thirty year period (1975-2005). This thesis examines if countries with a higher frequency of natural disasters experience a negative change in growth rates. The panel data fixed effects model used in this paper shows that a higher frequency of natural disasters has a statistically significant positive effect on economic growth rates

The Economic Feasibility of the Re-use of the Louisville and Nashville Railroad Depot, Knoxville, Tennessee

A problem which exists in many cities today is the abandonment of railroad depots. Re-use should be considered both by the railroad industry and cities. If the property is to remain vacant or underused, there may be an unfavorable effect on the surrounding uses. It is the purpose of this thesis to determine the economic feasibility of re-use of the abandoned Louisville and Nashville depot in Knoxville, Tennessee. A case study was conducted to determine the highest and best re-use for this parcel of land. The main assumption is that the architectural quality of the shell of the structure will be preserved, and this will limit the re-use of this depot. The methodology used in this thesis narrowed down the potential uses by examining the characteristics of the site and the surrounding areas and determining what families of uses would be compatible. Each proposed use was evaluated according to location criteria, and a summary of the sales and expenditure potential of Knoxville\u27s trade area was stated to determine the economic feasibility of the proposed uses. Next, an income flow analysis for retail and office space was established to determine the capitalization rate on investor\u27s equity. This rate of return was compared with alternative investments. Information for this thesis was obtained from interviews with railroad officials, planners, realtors, and investment consultants. Planning studies for the Knoxville Metropolitan area were reviewed as well as literature pertinent to the subject. The survey of the site and surrounding planning units established five proposed families of uses. These proposed re-uses were: industry, residential, institutional, retail and office use. The examination of the proposed uses in regard to location criteria eliminated the following uses: 1. Industrial use was eliminated because of the high property cost, property taxes and restoration costs, plus the availability of other suitable industrial sites. 2. Residential use was not feasible because of the structural character of the building. 3. Institutional use could be possible if a particular use could be established that would not require interrelationships with other public uses. The income flow analysis established that retail use was not desirable because of the high capitalization rate and the lack of sufficient parking. A mixture of office and retail use was evaluated and determined to be economically unfeasible because of the low capitalization rate. Office space has been established as the highest and best use for the property. This use would be compatible with the surrounding uses, and meets the location criteria with few exceptions and yields a capitalization rate favorable to alternative investments