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The Kinetics Of Rotating Biological Contactors Treating Domestic Wastewater, Abraham Pano, E. Joe Middlebrooks, J. H. Reynolds

Reports

Four, four-stage, laboratory scale rotating biological contactor (RBC) units were employed to develop kinetic models for the RBC process when treating domestic wastewater. The study was conducted at three different temperatures of 5 degrees C, 15 degrees C, and 20 degrees C. Each unit operated at a different constant organic loading rate taht ranged from 4 qCOD/m^2/d to 14 gCOD/m^2/d and at a constand detention time of 2 hours. Carbonaceous substrate removals measured as COD cencentrations with the four-stage RBC's were 80, 85, and 90 percent for 5 degrees C, 15 degrees C, and 20 degrees C, respectively. The major …

Natural Salinity Removal Processes In Reservoirs, Jay J. Messer, Eugene K. Israelsen, V. Dean Adams

Reports

A small but significant amount of salinity removal has been reported by various authors to occur in mainstem Colorado River reservoirs. Recalculation of some of these salinity budgets, together with a review of the data bases used, usggests taht removal has not often been conclusively demonstrated. Laboratory microcosm experiments and field data indicate that calcium carbonate precipitation, perhaps with some coprecipitation of magnesium carbonate, is the mechanism responsible for most of the salinity removal in Oneida Reservoir, Idaho. Coprecipitation processes (including ion exchange), coagulation, and bioassimilation do not appear to be important natural salinity removal mechanisms. Finally, loss of calcium, …

A Survey And Evaluation Of Shallow Groundwater Contamination Hazards In The State Of Utah, Edward P. Fisk, Calvin G. Clyde

Reports

A survey was made to appraise current man-made contamination of shallow groundwater in Utah. Very little has been published on the subject, and most of the information was obtained by personal observation and through interviews of individuals concerned with water quality protection in Utah. After presenting the relevant physiographic, geologic, and hydrologic characteristics of the various regions of Utah and discussing how these relate to groundwater contamination in general, representative groundwater quality hazards in 32 sites or regions in Utah are presented. A very wide range of hazards to groundwater quality was found to exist. These cases cover the range …

Water Quality In Pleasant Valley, Utah, Calvin G. Clyde, Dennis B. George, Kun Mo Lee, Phil Pucel, William Hay

Reports

Pollution of shallow groundwater due to wastewater disposal in Pleasant Valley, Utah, was investigated from October 1979 through August 1980. Water samples were collected from 23 wells and 5 stream sampling sites. Water quality analysis revealed pollution at several sites. Groundwater pollution caused by man’s activities in the area was observed in Bolotas and Scofield Campsite subdivisions. Severe shallow groundwater pollution measured in wells which were located in south and north profiles of the town of Scofield, Utah, could have originated from the municipal waste disposal practice in the town. Natural phenomena, however, such as pyrite oxidation, could possible have …

Evaluation Of Wastewater Filtration, Bryant L. Benth, E. Joe Middlebrooks, Dennis B. George, James H. Reynolds

Reports

Tertiary filtration of secondary wastewater is frequently used to improve wastewater treatment plant effluent quality. Four experimental filter columns were operated at the Preston, Idaho, Wastewater Treatment Plant to evaluate the effectiveness of granular media, gravity filtration. The Preston plant is a trickling filter secondary treatment plant and services a population of approximately 3600 people. Four filter medium configurations were studied. Multi-media, dual-media, and single-media beds were constructed with the following media configurations: (1) coal-sand-garnet; (2) coal-sand; (3) sand-garnet; and (4) all sand. The filters were operated at two hydraulic loading rates. Effluents from the primary clarifier, trickling filter, and …

The Physical And Chemical Limnology Of Lake Mcconaughy With Reference To Fisheries Management, Melvin W. Taylor, Kit M. Hams

Nebraska Game and Parks Commission: Publications

Lake McConaughy is an important fishery resource of the state of Nebraska. The estimated fishing pressure in 1975 as determined from a postal creel census was 175,872 angler days (Morris 1977). This estimate is inflated compared to an on-site creel census conducted in 1977-78 which showed a total of 69,500 fishing trips annually (Madsen 1980). Not all fishermen were contacted so this estimate is undoubtedly too low. Regardless of which figure is accepted, the reservoir provides many man-days of fishing opportunity. Conservation and management of the fishery resource is necessary to maintain and/or improve its quality,

An important factor in …

A Generalized Inland Fishery Simulator For Management Biologists, Melvin W. Taylor

Nebraska Game and Parks Commission: Staff Research Publications

Presently available fishery models are either too simplified or too complicated to be useful to inland fishery managers. This research was directed toward developing a simplified but realistic computerized simulator useful to fishery managers. The model developed is basically an ageclass structured simulator with features built in to allow easy but effective use by fishery managers. It includes provisions for input of all important parameters plus provisions for density-dependent relationships where applicable. Examples of model use are given for a put-and-take rainbow trout (Salmo gairdneri) fishery and a self-sustaining walleye (Stizostedion vitreum) population.

Physical And Chemical Limnology Of Lake Mcconaughy, Melvin W. Taylor, Kit M. Hams

Nebraska Game and Parks Commission: White Papers, Conference Presentations, and Manuscripts

Lake McConaughy is an important fishery resource of the state of Nebraska. The estimated fishing pressure in 1975 as determined from a postal creel census was 175,872 angler days (Morris 1977). This estimate is inflated compared to an on-site creel census conducted in 1977-78 which showed a total of 69,500 fishing trips annually (Madsen 1980). Not all fishermen were contacted so this estimate is undoubtedly too low. Regardless of which figure is accepted, the reservoir provides many man-days of fishing opportunity. Conservation and management of the fishery resource is necessary to maintain and/or improve its quality,

An important factor in …

Water Current, Volume 13, No. 1, January/February 1981

Water Current Newsletter

Annual Report, Nebraska Water Resources Center
Water Resources Seminars
Matching Fund Proposals Submitted to OWRT
Nebraska Water Conference
Fischbach Receives Award
Director of DWR Resigns
EPA Announces Groundwater Protection Plan
Five-Year Research Goals and Objectives
Research Review: Estimation of Ground Water Recharge Benefits for Irrigation Use

Glacial Deposits, Vol. 9, 1980-1981, Department Of Geography-Geology

Glacial Deposits

Newsletter of the Department of Geography-Geology

Mossbauer Spectroscopy Of Iron-Containing Dermal Granules From Molpadia Intermedia, S. Ofer, G. C. Papaefthymiou, R. B. Frankel, H. A. Lowenstam

Physics

Dermal granules containing hydrous ferric oxide cores from Molpadia intermedia were studied by Mössbauer spectroscopy from 1.5 t0 300 K and in magnetic fields up to 80 kOersted at 4.2 K. A magnetic phase transition to an antiferromagnetically ordered state is observed at 10 K. The results are compared with the magnetic behavior of micellar cores of ferritin from eukaryotes and iron-storage materials from prokaryotes.

The Monadnock Volume 54-55, 1980-1981, Clark University Geographical Society

The Monadnock (Clark Geographical Society)

Volume 54-55 The Monadnock. The Monadnock was the alumni magazine of the Clark University Geographical Society (1927-1985) (2014-present).

The Quality Outdoor Recreation Component In Multi-Purpose Conservation Areas: A User Assessment Devised, And Applied To Pinehurst Lake Conservation Area, Gerald Carl Thomas

Theses and Dissertations (Comprehensive)

Recreational demand for out-of-doors space and facilities continues to increase into the 1980’s. Accordingly, multi-purpose conservation areas, by the nature of their designations, require ongoing assessment of the attributes which determine the quality of the recreational experience they afford.

A problem with the master planning process for these multi-use areas is that in the past, little or no consideration has been given to user-recreationist input in the development stages of the master plans. The purpose of this study is to devise a method of assessing user satisfaction towards the recreational quality available at multi-use conservation areas, and to show how …

Comparative In Vitro Studies On Bond Strength And Sealant Polymerization, Gerald E. Sievers

Loma Linda University Electronic Theses, Dissertations & Projects

A comparison of two orthodontic sealants and two adhesives was made. An experimental adhesive was tested (Unitek*) also an experimental sealant (Unitek**) was evaluated for its ability to polymerize into a thin film. An established adhesive and sealant system (Concise***) was compared with the above products.

The factors which were considered important to the study were: the strength of the bond formed; the working efficiency; the ability for these materials to bond to the lingual of teeth; and the value of using contralateral teeth when testing bond strength.

An Instron testing machine was used to record the shear strength of …

Role Of Gulf Stream Frontal Eddies In Forming Phytoplankton Patches On The Outer Southeastern Shelf, James A. Yoder, Larry P. Atkinson, Thomas N. Lee, Hongsuk H. Kim, Charles R. Mcclain

CCPO Publications

Continuous surface mapping of temperature, salinity, and chlorophyll along a 300-km segment of the Gulf Stream cyclonic front defined the spatial scales of a large diatom patch that persisted throughout a 10-day study. The patch was localized in the upwelled cold core of a Gulf Stream frontal eddy centered over the 200-m isobaths off Jacksonville, Florida, in April 1979. The µ g liter^-1 surface chlorophyll isopleth enclosed an area >1,000km² with an alongshore dimension of 130km. Surface chlorophyll exceeded 5µg liter^-1 within the upwelled cold core of the eddy, 10-100X higher than concentrations in Gulf Stream or …

S-Adenosyl- L-Methionine And S-Adenosyl- L-Homocysteine: A Nuclear Magnetic Resonance Study And Purification Of S-Adenosyl- L-Methionine: L-Homocysteine S-Methyltransferase From Saccharomyces Cerevisiae, Mark Lewis Stolowitz

University of the Pacific Theses and Dissertations

An analysis of the 360 MHz ('1)H NMR spectra of the title compounds in ('2)H(,2O) is presented. The ('3)J values for the ribose vicinal protons of S-adenosyl-L-methionine are consistent with a predominantly C(,3')-exo conformation and with one highly favored gauche-anti conformation about the C(,4')-C(,5') bond. The corresponding ('3)J values for S-adenosyl-L-homocysteine imply a similar C(,3')-exo ribose ring conformation, but the orientation about the C(,4')-C(,5') bond is distributed between two gauche-anti rotamers. The methionine side chain of S-adenosyl-L-methionine has approximately equal populations of rotational isomers about the C(,(alpha))-C(,(beta)) and C(,(beta))-C(,(gamma)) bonds, whereas the side chain of S-adenosyl-L-homocysteine exhibits a conformational preference …

The Structure Of Lamellar Lyotropic Liquid Crystals From Lecithin And Alkanediols, Magda A. El-Nokaly, Larry D. Ford, Stig Friberg, David W. Larsen

Chemistry Faculty Research & Creative Works

Lamellar liquid crystals from lecithin and alkane diols were studied to determine the composition range of stability and geometrical dimensions using low-angle X-ray scattering. An estimation of the dislocation pattern was made from the optical pattern in polarized light. The ethylene glycol gave the widest range of stability for the lamellar structure, the range being reduced toward heptane diol, the longest member to give liquid crystals. The interlayer spacing was reduced with increasing chain length of the diol and the dislocation pattern remained identical. © 1981.

Grain Legume Agronomy Programme, G Walton

Experimental Summaries - Plant Research

Lupin agronomy, series 1 - growth factor interactions. To evaluate the relative influence that various growth factors exert on crop yield. Lupin agronomy, series 2 - harvest index response to density. To establish whether the harvest index of the plants at maximum crop yield density remains constant over a range of environmental conditions and whether differences exist between cultivars. Lupin agronomy - nutrition. To compare the grain yield response to potash rates. Grain legumes for wheatbelt rotations. To compare the soil fertility after one year growth of different legume species. In the 1981 experiments, Derrimut field pea yielded well, outyielding …

Comparison Of Benthic Oxygen Demand Measurement Techniques, Thomas V. Belanger

Ocean Engineering and Marine Sciences Faculty Publications

Several common methods to measure benthic oxygen demand were compared using measured and literature data. An in situ respirometer technique, a laboratory core-uptake technique and a laboratory flow-through system technique were compared on sand and organic sediment in Lake Washington, Florida. In situ uptake rates were significantly higher than core uptake rates, and this difference was greater for highly organic sediment than sand sediment. Measured and literature uptake values for in situ respirometer and core-uptake techniques with organic sediment were compared and resulted in a relationship (r = .99; P< .01) of the form: in situ uptake (g 2/m 2-hr) = .036 + 1.16 core uptake (g 2/m 2-hr). In many cases both coreuptake and in situ respirometer techniques under estimate oxygen consumption, due to difficulties in obtaining correct water velocities over the sediment surface. In the flow-through system studies, sediment oxygen uptake varied considerably with flow rate and a significant logarithmic relationship (P<.01) was obtained with Lake Apopka, Florida organic sediment. Measurement techniques that simulate field flows are the most accurate, such as the flow through system or the in situ tunnel respirometer technique.

Planktonic Foraminifera Collected By The R/V Melville (1972) In The Southwest Atlantic, Haydee Lena, Silvia Watanabe, Sara Souto

Ocean Engineering and Marine Sciences Faculty Publications

The planktonic foraminiferal fauna was studied from 186 samples collected by the R/V Melville in the Southwest Atlantic Ocean during 1972. The samples were collected in the surface layer (horizontal tows) and throughout the water column from 500-0 m. (vertical tows). Twenty species were recognized (some with various formae). These species can be divided according to their temperature requirements into cold-temperate, warm-temperate, warm and cosmopolitan species. Based on the distribution of these species, 4 types of surface water were determined.

Selected Trace Metals In The Upper St. Johns River And Their Land Use Relationships, Jeffrey A. Leed, Thomas V. Belanger

Ocean Engineering and Marine Sciences Faculty Publications

Iron, copper and zinc were monitored in the water, sediments, and 4 species of fish of the upper St. Johns River, Florida. Surface water concentrations of total iron commonly exceeded 300 ug/l, the standard established by the Florida Department of Environmental Regulation for waters intended for public consumption (Class I waters). Total iron levels in the upper St. Johns River are regulated by a series of interacting natural processes such as the ironphosphate cycle, inputs from nonartesian groundwater or bank seepage, complexation with dissolved organic compounds, increased land runoff during perids of high flow, and resuspension of bottom sediments during …

Infrared Absorption Study Of Humic Substances From Lake Apopka Sediment, Plankton And The Surrounding Drainage Basin, Thomas V. Belanger

Ocean Engineering and Marine Sciences Faculty Publications

Infrared absorption spectra were run on humic substances from Lake Apopka sediment samples and compared with spectra from citrus and muck farm humic substances from sediment in the surrounding drainage basin, and also with spectra from autochthonous plankton humic substances. The 1540 cm'1 and 1650 cm' 1 peaks in the plankton and lake sediment samples, in addition to other spectra similarities, indicate that plankton is the probable precursor of lake sediment humic substances. The absorption bands at 1650 cm 1 and 1540 cm 1 are thought to be due to peptide bonds in protein, with amide I absorption occurring at …

Late Quaternary Environmental History Of Lake Valencia, Venezuela, J. Platt Bradbury, B. Leyden, M. Salgado-Labouriau, W. M. Lewis Jr., C. Schubert, M. W. Binford, D. G. Frey, D. R. Whitehead, F. H. Weibezahn

United States Geological Survey: Staff Publications

Chemical, paleontological, and mineralogical analyses of a 7.5-meter core from the middle of Lake Valencia, Venezuela, have provided information on the paleoclimatic history of this low-elevation, low-latitude site for the last 13,000 years. The data show that dry climates existed in this region from 13,000 years before present (B.P.) until about 10,000 years B.P. The Lake Valencia Basin was occupied by intermittent saline marshes at that time. About 10,000 years B.P., a permanent lake of fluctuating salinity formed and arboreal plant communities replaced the earlier dominant xeric herbaceous vegetation and marsh plants. By 8500 years B.P., Lake Valencia reached moderate …

The Geology And Environment Of Deposition Of The Kinneman Creek Interval, Sentinel Butte Formation (Paleocene), North Dakota, Katherine J. Logan

Theses and Dissertations

To date, most environmental reconstructions of lignite bearing formations in western North Dakota have been done on a formational scale. The objective of this study was to investigate one of the non-lignite intervals, the Kinneman Creek Interval, directly above the strati graphically lowest lignite in the Paleocene Sentinel Butte Formation. The Kinneman Creek Interval has been recognized in the Sentinel Butte Formation throughout most of western North Dakota.

The field area is located in west-central North Dakota in Mercer, Oliver, and McLean Counties and is bisected by the Missouri River. Excellent exposures are provided in the highwalls of Baukol-Noonan, North …

The Distribution And Relative Abundance Of Aquatic Oligochaeta In The Upper Cache River System, Southern Illinois, In Relation To Water Quality, Mark Julian Wetzel

Masters Theses

Species composition, distribution, abundance, and water quality relationships of aquatic oligochaetes occurring in the upper Cache River system, southern Illinois were investigated. Forty-two taxa of oligochaetes including 16 naidids, 22 tubificids and representatives of the families Aeolosomatidae, Branchiobdellidae, Enchytraeidae, and Lumbriculidae were collected. Four species of oligochaetes new to Illinois, Limnodrilus psammophilus Loden, L. rubripenis Loden, Psammoryctides (Spencerius) californianus Brinkhurst, and Haemonais waldvogeli Bretscher were collected during this study. Another species of Limnodrilus new to science is reported here, as yet undescribed. The thesis that aquatic oligochaetes can be used as true water quality indicator organisms is rejected. It is …

Large-Scale Operations Management Test Of Use Of The White Amur For Control Of Problem Aquatic Plants. Report 2. First Year Poststocking Results. Volume Iii. The Plankton And Benthos Of Lake Conway, Florida, Thomas Crisman, Floor M. Kooijam, University Of Florida, Department Of Enviromental Engineering Sciences

School of Geosciences Faculty and Staff Publications

No abstract provided.

Protective Effects Of Certain Lythraceae Alkaloids And Homologs In Croton Oil- And Carrageenan-Induced Inflammation, John Alan Byrne

University of the Pacific Theses and Dissertations

Cryogenine's immunosuppressive activity was first evaluated by Kosersky, et al. (21) who, impressed by the drug's ability to inhibit both the irritant- and immune- mediated phases of adjuvant-induced polyarthritis (11), quantitatively confirmed this activity and clearly differentiated the action of cryogenine from that displayed by 6-mercaptopurine. A definitive study by Watson and Malone (22) confirmed cryogenine's lack of immunosuppressive capacity at effective anti-inflammatory dose levels.

The molecular complexity of the lythraceae alkaloids suggests that several active centers may account for their unique pharmacological profile. To assess these potentially active sites, two standard models of acute inflammation were selected for use …

Sodium Accumulation In Serpentine And Non-Serpentine Populations Of The Milkweed Asclepias Fascicularis, Paul N. Thomas

University of the Pacific Theses and Dissertations

Because Asclepias fascicularis is found on both serpentine and non-serpentine soils in California and because it was reported to accumulate sodium, this study was initiated to establish the degree of accumulation of this ion in these two soil types. Two other species, Asclepias speciosa Torr. and Asclepias cordifolia (Benth.) Jeps. were included to determine if this characteristic of accumulation occurs in other members of this genus.

Mode Of Action Of The Heme-Controlled Translational Inhibitor: Relationship Of Eukaryotic Initiation Factor 2-Stimulating Protein To Translation Restoring Factor., John Siekierka, Ken-Ichiro Mitsui, Severo Ochoa

Department of Chemistry and Biochemistry Faculty Scholarship and Creative Works

We have purified the translation restoring factor (RF) and the eukaryotic initiation factor 2 (eIF-2) stimulating protein (ESP) to near homogeneity from the postribosomal supernatant and the ribosomal salt wash, respectively, of rabbit reticulocyte lysate. They were isolated in the form of eIF-2 complexes, apparently in a 1:1 ratio. Their virtually identical NaDodSO4/polyacrylamide gel electrophoretic patterns show, in addition to the eIF-2 alpha (38,000), beta (52,000), and gamma (54,000) bands, peptide bands at approximately 80, 65, 57, 40, and 32 kilodaltons. The apparent Mr of either complex is about 450,000, whereas that of free translation restoring factor (RF) is approximately …

Study Of Iron In Magnetotactic Bacteria, Richard B. Frankel, Richard P. Blakemore

Physics

Bacteria have recently been discovered directing their movements by sensing the earth's magnetic field. They contain arrays of crystals of lodestone or magnetite which they synthesize from iron in the ocean. The discovery of the same type of crystals in the abdomens of honey bees and the brains of homing pigeons suggests that nature is not oblivious to the earth's magnetic field. The biological mechanism for sensing magnetic fields has never been determined. These bacteria are capable of biologically synthesizing highly purified single domain magnets that would be very expensive to produce chemically.

The tiny perfect magnetite crystals made by …