Digital Commons Network^™

Geologic Responses To Late Cenozoic Marine Transgressions In The Poropotank River Estuary, Virginia, Martin Lane Mitchell

Dissertations, Theses, and Masters Projects

No abstract provided.

A Scc Mo Calculation On The Tetracyanoethylene-Benzene Complex, Joe Kirsch, Shannon Lieb, Mark Cisneros

Scholarship and Professional Work - LAS

Dr. Shannon Lieb's contribution to Volume 94 of the Proceedings of the Indiana Academy of Science.

An Experimental Study Of The Effects Of Modularity On Resource Consumption In Software Development, Alan D. Christiansen

Masters Theses

"Many authors have encouraged the use of modular programming techniques in software development. In fact, there is almost total agreement within industrial and academic circles that modularity is a desirable feature of any software package. Unfortunately, the desirability of modular design is almost always voiced without support from experimental evidence.

This thesis consists of an experiment comparing the resource consumption of programmers based on the modularity practices employed during the design and programming phases of software development. The experiment tests the effectiveness of modularity in reducing psychological complexity of software.

The results of the research show that in some cases …

Feral Donkeys : An Assessment Of Control In The Kimberley, S H. Wheeler

Journal of the Department of Agriculture, Western Australia, Series 4

Feral donkeys are one of the major limitations to increased pastoral production in many parts of the Kimberley area of Western Australia, where they compete with cattle for food. In addition donkeys are aggressive animals, driving cattle from watering points and better grazing areas. They eliminate perenial plants by overgrazing and therefore reduce the carrying capacity of the range.

Originally introduced as draught animals, donkeys were released when cars arrived; since then they have bred up to large numbers in many areas.

For several years the Agricultural Protection Board has undertaken a programme of donkey shooting from helicopters. Since this …

The Soil Phosphorus Store, G S P Ritchie, D. M. Weaver

Journal of the Department of Agriculture, Western Australia, Series 4

The management of the soil phosphorus store, or 'super bank' to minimise phosphorus leaching losses is a vital part of any strategy to reduce algal pollution of the Peel-Harvey estuary.

Phosphorus can exist in the soil in four main 'pools'. it may occur in the soil solution or in one of the three pools that contain phosphorus in solid forms. This phosphorus can be in compounds (fertilisers, dead plant material); adsorbed (attached) to soil particles such as organic matter, clay and iron oxide; or as constituents of micro-organisms.

Comparison Of Conventional Boomspray And C.D.A. Equipment For Weed Control In Cereals, J R. Peirce, B. J. Rayner

Experimental Summaries - Plant Research

l. 84N067 - Ryegrass

2. 84N068 - Capeweed

3. 84ME69 - Capeweed

4. 84 (40-41) - Ryegrass & Radish

5. C.D.A. - Capeweed

6. Boomspray Capeweed

Comparison of conventional boomspray and C.D.A. equipment for weed control in cereals – 84C40, 84C41, 84ME69, 84NO67, 84NO68.

Effectiveness of Roundup C.T. with and without crop oils applied through Controlled Droplet Applicators (C.D.A.) – Wongan Hills Research Station.

Effectiveness of Roundup C.T. with and without crop oils applied through a conventional boomspray – Wongan Hills Research Station.

Lupins Wheat Rotation Long Term Rotation Trials, I Rowland, W Hawkins

Experimental Summaries - Plant Research

Long term rotation trials - 66M29, 67Cl3, 67N4, 68E5, 68SG5, 73SG16.

Lupins Wheat Rotation - 80TS3, 82TS2, 82M26.

Annual Departures From Average Annual Precipitation In Nebraska, 1850-1983, Conservation Survey Division

Conservation and Survey Division

No abstract provided.

Annual Departures From Average Annual Precipitation In Nebraska, 1850-1983, Conservation Survey Division

Conservation and Survey Division

No abstract provided.

Annual Outflow Of Water From Nebraska, 1950-1983, Conservation Survey Division

Conservation and Survey Division

No abstract provided.

Annual Departures From Average Annual Precipitation In Nebraska, 1850-1983, Conservation And Survey Division

Conservation and Survey Division

No abstract provided.

Inventory Of Irrigation Water Use In Box Butte County, Nebraska 1981, D. R. Lawton, L. L. Leahon

Conservation and Survey Division

No abstract provided.

Lupin Growth And Water Use; Wheat, Barley, Pea, Rob Delane, J. Hamblin, A Bishop Ms

Experimental Summaries - Plant Research

84C16/84C17 Lupin Growth and Water Use. 84C19 Effect of Density and Nitrogen on Growth and Yield of Uniculm and Tillering Wheat. 84C20 Maturity, Nitrogen and Density Effects of Barley. 84C21 Wheat Variety Trial. 84C18/23/28/33 Pea Research in the Geraldton Region. 84C32 Effect of Terra Sorb on Wheat Yield.

Clover, Bluegreen Aphid And Red Legged Mite Screening, Medicago Murex Evaluation, D J. Gillespie

Experimental Summaries - Plant Research

Clover scorch: In spite of poor seasonal conditions, adequate levels of clover scorch developed in the test plots to readily identify susceptible clovers. Of the 333 introductions tested, 23% scored 3.0 or less indicating a high level of resistance. Bluegreen aphid screening: Two hundred and twenty four randomly selected subterranean clovers from all Western Mediterranean collections were tested for resistance to BGA in Nov/Dec of 1983. The susceptibility of annual legumes to Bluegreen aphid. Red legged earth mite screening: Results of two preliminary experiments to develop techniques for mass screening for RLEM resistance in subterranean clover were reported last year. …

Nmr Measurements On Intercalated 3r-Tas2.Ix (I=Nh3 And N2h4), N. H. Handly, Juana Vivó Acrivos

Juana Vivó Acrivos

No abstract provided.

Manganese Nutrition Of Cereals, J W. Gartrell

Experimental Summaries - Plant Research

Acidifying N fertilizers on availability of native soil Mn, and on fertilizer Mn applied in two forms and two mixing methods 84NO3. Acidifying N fertilizers Mn sources, methods of incorporation 84NO4. Acidifying N fertilizers, Mn sources, methods of incorporation 84NO5. Varietal differences among wheats in ability to absorb and utilize manganese in deficiency situations 84NO6. Manganese residual with acidifying nitrogen fertilizers 84NO7.

Investigation Of Root And Foliar Diseases Associated With Decline In Wheat Yields On Sandplain, Jill Wilson

Experimental Summaries - Plant Research

A Wheat Industry Research Council Project. In 1984 research was conducted in collaboration with Dr John Hamblin, Dr Allan Brown, Mr Rob Delane and Dr Mark Sweetingham. 1. Field Trial (GE84Cl5): Interactions between disease and agronomic factors, particularly rotation with lupins, and deep tillage. ( i) Yields, (ii) Incidence of root diseases, (iii) Root length and diseased root length, (iv) Leaf disease. 2. Farm Survey (sites from trial 84GE57 of Dr Allan Brown) Incidence of Common Root Rot

Crop Oil Additives To Herbicides, R Madin, A Lindsay

Experimental Summaries - Plant Research

Crop oil additives to herbicides - 84LG42.

Umbrella grass (Cyperus eragrostis) control in irrigated pasture - 85HA1.

Stinkwort control - 85NO5, 85PE14.

Ice plant (Mesembryanthem nodiflorum) control in crop and pasture - 83SG20, 83SG21.

Hoegrass, Herbicide, Plant Growth And Soil Activity Of Glyphosate, T Piper

Experimental Summaries - Plant Research

Hoegrass tolerant ryegrass. Herbicide incorporation. Plant growth one season after herbicide use. Soil activity of glyphosate. Growth of lupins on plots treated with herbicide for each of the two previous seasons - Trials carried out at Geraldton, Wongan Hills and Wickepin measured the amount of pasture produced on plots that had been treated with herbicides while in crop the previous season.

High Valent Chromium (V) And Chromium (Vi) Complexes, Harry Bennett Davis

Dissertations and Theses

A new preparative route to the only neutral chromium (V) oxide fluoride, chromium oxide trifluoride, has been accomplished by the reaction of xenon difluoride with chromyl fluoride at high temperature. The chromium oxide trifluoride is produced as crystals which are suitable for single crystal studies. In reactions of chromium oxide trifluoride with alkali and alkaline metal fluorides in anhydrous hydrogen fluoride, new chromium(V) oxide fluoride salts were obtained; these salts were not of high purity due to unknown problems. An attempt to prepare chromium oxide tetrafluoride by the reaction of xenon difluoride with chromyl fluoride in anhydrous hydrogen fluoride failed …

Vegetation Changes In Four Study Areas At Indiana Dunes National Lakeshore, Kathryn Ann Kerr

Masters Theses

The sampling transects at Indiana Dunes were established to show the pre-burn condition of the vetetation and to monitor the long term effects of burning. However, one year of monitoring showed changes in vetetation that further substantiate the need for the burning program.

Miller Woods (Transect A) has burned frequently in recent years. The one year without fire showed little change in the herbaceous layer. The few notable herbaceous changes might indicate a transition to a more mesic community, but should be viewed skeptically because of the wet season in 1982.

Nearly half of the small shrub species at Miller …

Sediment Oxygen Demand In Streams Receiving Sewage Effluent, John J. Schultz

Masters Theses

Sediment oxygen demand is an important factor in determining dissolved oxygen concentrations in streams and rivers subjected to sewage effluents and other sources of organic pollution. Resuspension of sediments during bottom-scouring after periods of heavy precipitation exerts an immediate and increased oxygen demand on the water and is expected to decrease sediment oxygen demand at the site.

Sediment samples were collected monthly from April through November, 1983 from three small streams subjected to sources of organic pollution. The samples collected were arbitrarily categorized into wet and dry period samples based on the total precipitation between collection dates. Sediment oxygen demand …

The Purification And Partial Characterization Of The Surface Polysaccharides From Three Fast-Growing Rhizobium Japonicum Strains, Madhav P. Yadav

Masters Theses

The fast-growing strains of R. japonicum were originally isolated from China. They are acid-producing Rhizobia and are capable of nodulating soybeans. These isolates share a common host-specificity (Peking soybean) with the slow-growing R. japonicum strains even though their biochemical properties are more closely related to other fast-growing Rhizobium species. The surface polysaccharides from three fast-growing R. japonicum strains--USDA201, USDA205, and HC205--were isolated and partially characterized. Strain HC205 is a nod⁻ mutant of USDA205 which lacks the symbiotic plasmid. These surface polysaccharides consist of extracellular, capsular and lipopolysaccharides (EPSs, CPSs and LPSs). The EPSs from all three strains are very similar …

Effect Of Temperature On The Association Constants Of Some Divalent Metal Ions With Chloride In Sea Water-Like Solutions, Jose Vinicio Macias Zamora

University of the Pacific Theses and Dissertations

Association constants for the formation of lead (II) chloride complexes were studies in aqueous solutions also containing copper (II) and cadmium (II) ions.

The ionic strength was adjusted with sodium perchlorate to resemble that of sea water. The temperature was set at fixed values between 5° and 35° C to determine the effect on the equilibria in these systems. The total metal concentration was less than 10^-8 M.

Differential pulse anodic striping voltammetry was used with a conventional three electrode system and a thin-film working electrode of Pt/Hg. Complex formation was followed as a function of the ligand concentration …

The Relationship Of Self-Concept, Sex, Age, Major, Anxiety, Mathematics Background, And Mathematics Ability To The Level Of Mathematics And Statistical Anxiety Among College Juniors, David John Maysick

Dissertations

Problem. One's choice of career has significant effect upon one's future life in terms of earning potential and social interaction. Mathematics/statistical anxiety and the mathematics avoidance often accompanying such anxiety, can influence career choice, causing otherwise talented people to limit their future. The purpose of this study was to determine from selected variables--particularly self-concept--which, if any, were related to the problem of mathematics and/or statistical anxiety.

Method. The statistical sample used was 350 juniors. Stratification was by degree of mathematics content in subject's major field of study. For the study, subjects had to be in the same major category as …

Synthesis Of 2-Alkylidene-1,3-Cyclohexanediones, Mary Virginia Manson

Dissertations, Theses, and Masters Projects

No abstract provided.

A Method For Evaluating The Long-Term, Cumulative Impacts Of Tidal Marsh Alterations: The York River System, A Case Study, Andrew W. Zacherle

Dissertations, Theses, and Masters Projects

No abstract provided.

Nanoplankton Dynamics In A Salt Marsh-Mudflat Ecosystem, Helena Maria Galvaeo

Dissertations, Theses, and Masters Projects

No abstract provided.

Electron Detachment In Negative Ion-Molecule Collisions, Mohammed Saiful Huq

Dissertations, Theses, and Masters Projects

Absolute total cross sections for electron detachment, reactive scattering, charge transfer and dissociative charge transfer have been measured for collisions of hydrogen and halogen negative ions with various molecular targets. The reactants investigated involve H('-), D('-), F('-), Cl('-), Br('-) and I('-) ions as projectiles and H(,2), D(,2), HD, N(,2), CO, O(,2), CO(,2), CH(,4) and Cl(,2) molecules as targets. The energy range of these experiments extended from about 1 eV to about 300 eV in the lab.;The threshold behavior of the detachment cross sections for the reactants H('-)(D('-)) + H(,2),D(,2) and HD has been determined. The thresholds for detachment for both …

Soil Improvement With Bauxite Residues, W H. Tacey, S. C. Ward, K. J. Summers, N. J. Barrow

Journal of the Department of Agriculture, Western Australia, Series 4

The sandy soils of the Peel-Harvey catchment hold water and nutrients very poorly. The Gavin ridges dry out quickly during rainless periods and this severely limits pasture growth. These ridges and the lower lying Joel and Coolup sands also lose a large proportion of the phosphorus, sulfer and potash fertilisers applied to them. Normally the sands lack clay materials to bind and hold the nutrients so rainfall leaches them out.

The Peel-Harvey Study Group, CSIRO, Alcoa and Murdock University have studied the use of a residue from bauxite mining to help overcome these problems. The treated residue has a texture …