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Articles 811 - 840 of 859
Full-Text Articles in Civil and Environmental Engineering
Microbial Characteristics Of An Activated Sludge And Three Commercial Preparations After Exposure To Phenolics, Laurie Gneiding
Microbial Characteristics Of An Activated Sludge And Three Commercial Preparations After Exposure To Phenolics, Laurie Gneiding
Theses
The biological characteristics of four microbial mixtures were examined after successive exposure to phenol and 2-chlorophenol at room temperature. One of the microbial mixtures was an activated sludge from the Livingston, NJ municipal wastewater treatment plant. The other three mixtures were commercial preparations sold by Polybac Corp.(Hydrobac), Sybron Corp. (BI-CHEM DC 1006/1007), and General Environmental Sciences(LLMO).
The characteristics examined were relative counts and species of gram negative/gram positive bacteria, yeast and fungi, protozoa, and higher organisms. For the gram negative bacteria and yeasts, culturing techniques and diagnostic tubes were used to determine the predominant species. Biochemical tests were done on …
Contaminant Transport Against A Slowly Moving Fluid : An Experimental Investigation, Surya Man Shakya
Contaminant Transport Against A Slowly Moving Fluid : An Experimental Investigation, Surya Man Shakya
Theses
Leachate migration into groundwater from leaking lagoons, hazardous waste sites, solid waste disposal sites, etc. has recently become a major cause of groundwater pollution. A possible solution to prevent leachate migration into groundwater is to create a negative hydraulic gradient toward the site. This can be achieved by installing two parallel slurry trench cut-offs around the perimeter of a leaking lagoon and by filling it with water. The water und-er the influence of positive hydraulic gradient will move toward the site and will finally find its way on the surface of the lagoon. Along with the flow of water, the …
Investigations Into Rates And Mechanisms Of Mercury Depuration In The Killifish, Fundulus Heteroclitus, Joanne A. Korpanty
Investigations Into Rates And Mechanisms Of Mercury Depuration In The Killifish, Fundulus Heteroclitus, Joanne A. Korpanty
Theses
Metallothionein (MT) and glutathione (GSH) have been shown in mammalian research to play a role in the sequestration and depuration of mercury. The sulfhydryl groups on both these peptides have a strong affinity for mercury, MT for Hg2+ and GSH for CH3Hg+. In this study, killifish (Fundulus heteroclitus) were force-fed one piece of squid laced with labelled mercuric nitrate to give a final food concentration of 20 ppm 203Hg2+ and 0.03 -0.05 µg g-1 Hg2+ total dose. Most of the mercury, 84.1 ± 12.1% (mean ± standard deviation), is depurated within the …
Analysis Of Selected Volatile Organic Substances Associated With Residential Kerosene Heater Use And The Health Implications, Catherine Coombs Bobenhausen
Analysis Of Selected Volatile Organic Substances Associated With Residential Kerosene Heater Use And The Health Implications, Catherine Coombs Bobenhausen
Theses
Volatile organic species (aliphatic hydrocarbons from hexane to dodecane, cyclohexane and aromatic species including benzene, toluene, ethyl benzene, m,p, and o—xylenes, nitrobenzene, styrene and naphthalene) associated with residential kerosene heater emissions were measured at two sites. One was a small room having a total volume of 23.66 cubic meters and an air change rate of 2.71 air changes per hour, and the other, a living/dining room area having a combined volume of 79.30 cubic meters and an estimated air change rate of .7 air changes per hour. The analytical procedure involved collection of a series of air samples in stainless …
Acrylamide Effects On Nerve Terminal Enzymes, Christopher S. E. Marlowe
Acrylamide Effects On Nerve Terminal Enzymes, Christopher S. E. Marlowe
Theses
Acrylamide causes a peripehral neuropathy. The biochemical mechanism by which it does so is the subject of intense investigation. One of the principal hypotheses for this mechanism centers on acrylamide's ability to inhibit glycolysis. This study examines the effects of in vivo exposure to acrylamide on the enzymes of the nerve terminal particle, the synaptosome.
A method for measuring glycolytic enzyme inhibition in the synaptosome was developed. Acrylamide (500 mg/kg) was administered to rats intraperitoneally. Synaptosomes were prepared by the method of Dodd et al, and lysed by sonication. GAPDH activity and NSE concentration were measured. GAPDH inhibition measured in …
Fundy Tidal Power Development : Preliminary Evaluation Of Its Environmental Consequences To The Resources Of The State Of Maine, Bigelow Laboratory For Ocean Sciences
Fundy Tidal Power Development : Preliminary Evaluation Of Its Environmental Consequences To The Resources Of The State Of Maine, Bigelow Laboratory For Ocean Sciences
Maine Collection
Fundy Tidal Power Development : Preliminary Evaluation of Its Environmental Consequences to the Resources of the State of Maine
A Report to the Maine State Planning Office by the Bigelow Laboratory for Ocean Sciences, April, 1984.
"Technical Report No. 35 - Bigelow Laboratory for Ocean Sciences, West Boothbay Harbor, Maine - A Division of Northeastern Research Foundation, Inc."
Contents: Executive Summary / Introduction / Methods / Physical and Biological Consequences / Socio-Economic Consequences / Research Needs / Bibliography / Appendix I. Written Comments on Greenberg Model
Bulletin Ma 20 - Sheep Yard Plans - Flocks Up To 500, D. Bicknell
Bulletin Ma 20 - Sheep Yard Plans - Flocks Up To 500, D. Bicknell
Animal production and livestock published reports
Manjimup Regional Office
Owners of small flocks often use much more labour per sheep than do owners of large flocks. Most of the difference in labour use is the design of sheep sheds and sheep yards, and a smaller affect from the mob size and experience in handling sheep.
This booklet gives some detail on design and construction of yards and a number of yard plans to handle up to 500 or so sheep. Many of the plans are from an Australian Wool Corporation publicatiot1 "Wool Harvesting Notes".
The Effects Of Limited Food Availability On The Striped Bass Fishery In Lake Mead, John R. Baker, Larry J. Paulson
The Effects Of Limited Food Availability On The Striped Bass Fishery In Lake Mead, John R. Baker, Larry J. Paulson
Publications (WR)
The original range of striped bass (Morone saxatilis) was along the Atlantic Coast. They were introduced into the lower Sacramento River in 1879 and are now also found along the Pacific Coast. A landlocked striped bass fishery was established in Santee-Cooper Reservoir, South Carolina, in 1954, and they have since been introduced into numerous other reservoirs, including Lake Havasu, Lake Mead and Lake Powell on the Colorado River. Striped bass were introduced into Lake Mead in 1969 in response to declines in the largemouth bass (Micropterus salmoides) fishery that occurred during the 1960s and in order to further utilize the …
Bulletin 3929 - Irrigation In Western Australia, K S. Cole
Bulletin 3929 - Irrigation In Western Australia, K S. Cole
Bulletins - 3000 - 3999
Irrigation is essential in many parts of the world to produce essential food and profitable cash crops. Generally, those areas of land with less than 360 mm of rain spread over a distinct wet season of several months cannot grow crops for food or cash on rainfall alone. Then irrigation becomes necessary unless some peculiarity such as an oasis exists.
Evaluation Of Impacts Associated With Reregulation Of Water Levels In Lake Mohave, Larry J. Paulson, John R. Baker, U.S. Water And Power Resources Service
Evaluation Of Impacts Associated With Reregulation Of Water Levels In Lake Mohave, Larry J. Paulson, John R. Baker, U.S. Water And Power Resources Service
Publications (WR)
The U.S. Water and Power Resources Service is considering reregulating Lake Mohave water levels to increase the net power benefit from Hoover Dam. Reregulation will not increase the generation capacity of the Hoover powerplant but it will enable the plant operation to be increased when the energy has greater monetary value. Energy generated at different times of the year has different market value, the highest being in January-March and July- September. By generating more power during these periods more net monetary benefit can be derived from Hoover Dam. The total volume of water released from Hoover Dam over an annual …
Influence Of Dredging And High Discharge On The Ecology Of Black Canyon, Larry J. Paulson, Theron G. Miller, John R. Baker, U.S. Water And Power Resources Service
Influence Of Dredging And High Discharge On The Ecology Of Black Canyon, Larry J. Paulson, Theron G. Miller, John R. Baker, U.S. Water And Power Resources Service
Publications (WR)
The Water and Power Resources Service is considering dredging in Black Canyon to create a larger forebay to accommodate higher peak discharges and reverse flows for proposed modifications to Hoover Dam. The Black Canyon area from Hoover Dam to Willow Beach supports a heavily utilized trout fishery and is important habitat for the razorback sucker (Xyrauchen texanus) and possibly bonytail chub (Gila elegans). The Water and Power Resources Service initiated this investigation to determine what effect dredging and higher peak-discharges would have on the ecology of Black Canyon.
Cadmium In Forest Ecosystems Around Lead Smelters In Missouri, Nord L. Gale, Bobby G. Wixson
Cadmium In Forest Ecosystems Around Lead Smelters In Missouri, Nord L. Gale, Bobby G. Wixson
Biological Sciences Faculty Research & Creative Works
The development of Missouri's new lead belt within the past decade has provided an excellent opportunity to study the dissemination and effects of heavy metals in a deciduous forest ecosystem. Primary lead smelters, within the new lead belt have been identified as potential sources of cadmium as well as lead, zinc, and copper. Sintering and blast furnace operations tend to produce significant quantities of small particulates highly enriched in cadmium and other heavy metals. At one smelter, samples of stack particulate emissions indicate that as much as 0.21 lb of cadmium may be released to the atmosphere per hour. This …
Low Cost Fencing, Department Of Agriculture, Western Australia
Low Cost Fencing, Department Of Agriculture, Western Australia
Journal of the Department of Agriculture, Western Australia, Series 4
Fences with more wire and posts are not necessarily stronger.
Design using high tensile wire can save on materials and reduce costs.
Poultry Breeds Must Be Conserved : An Ideal Small Unit, R H. Morris
Poultry Breeds Must Be Conserved : An Ideal Small Unit, R H. Morris
Journal of the Department of Agriculture, Western Australia, Series 4
The Department of Agriculture is concerned at the rapid disapearance of some poultry breeds and strains over recent years. This trend has resulted from the disposal of flocks previously held by commercial poultry breeders and fanciers.
One way to stop the trend of disappearance of poultry breeds is for interested people to maintain a breeding flock of pure-bred poultry, making the progeny available to others.
This article describes a small unit suitable for housing breeding fowls. The unit is based on designs developed by the Department of Agriculture.
Report On Wastewater Disposal To Board Of County Commissioners, Clark County Nevada, Clair N. Sawyer
Report On Wastewater Disposal To Board Of County Commissioners, Clark County Nevada, Clair N. Sawyer
Publications (WR)
This report is concerned with the management of waste-waters and subsurface drainage from the City of Las Vegas and its environs and the BMI complex, all in Clark County, Nevada. The prime objective is to recommend a plan of action which will utilize the natural resources of the area in the least costly manner and still protect Lake Mead for recreational purposes and use as a public water supply, At this writing, conditions in the upper Las Vegas arm of Boulder Basin are quite unsatisfactory for some recreational purposes due to the extensive blooms of algae which develop. Experience at …
Presumpscot River Basin - Cumberland County Tidewater Water Quality Management Plan, Bureau Of Water Quality Control
Presumpscot River Basin - Cumberland County Tidewater Water Quality Management Plan, Bureau Of Water Quality Control
Maine Collection
Presumpscot River Basin - Cumberland County Tidewater Water Quality Management Plan
Maine Department of Environmental Protection, Bureau of Water Quality Control, Division of Water Quality Evaluation and Planning, August, Maine (June 1976).
"Prepared pursuant to Section 303 (e) of the Federal Water Pollution Act Amendments of 1972"
Contents: Letter of Transmittal / Table of Contents / Appendices and Tables / I. Summary, Conclusions, Recommendations / II. Introduction / III. Water Quality / IV. Planning Activities / Appendices / Tables
Pollution Of Surface Irrigation Waters By Plant Pathogenic Organisms, James R. Steadman, C. R. Maier, H. F. Schwartz, E. D. Kerr
Pollution Of Surface Irrigation Waters By Plant Pathogenic Organisms, James R. Steadman, C. R. Maier, H. F. Schwartz, E. D. Kerr
Department of Plant Pathology: Faculty Publications
Systematic sampling of waterways and irrigation runoff from agricultural lands in the North Platte Project of Nebraska in July and August of 1972–1974 demonstrated that phytopathogenic organisms were disseminated. The organisms monitored included the bean common blight bacterium Xanthomonas phaseoli, the bean white mold fungus Whetzelinia sclerotiorum and various nematodes. Although many types of nematodes often were recovered from irrigation water, Heterodera sp. cysts which cause significant disease problems in the valley were found infrequently. Patterns of movement of the bacterial and fungal organisms were correlated with previous or current season infection of bean plants. The short-term survival of X. …
An Evaluation Of In-Stream Structures Designed To Provide Fish Habitat, Charles H. Call Jr.
An Evaluation Of In-Stream Structures Designed To Provide Fish Habitat, Charles H. Call Jr.
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
In-stream concrete structures were studied through model tests and river tests. The model studies indicated that four designs provided good habitat in the model stream. These structures were the inverted weir, the "V" structure, the slab with legs and the cylinder. Through the river studies it was determined that these structures did not influence enough of the total river area to be effective in providing good fish habitat. Also an appreciable amount of yearly maintenance would be required to free the structures from silting in, debris, and vandalism. The slab with legs was the only promising structure.
Ua66/1/2 Scrapbook, Wku Ogden College Of Science & Engineering
Ua66/1/2 Scrapbook, Wku Ogden College Of Science & Engineering
WKU Administration Documents
Scrapbook of clippings, press releases, photographs and other items related to the history of Ogden College of Science & Technology from 1961 to 1974.
Bulletin No 3887 - Cattle Yard Construction, Western Australian Department Of Agriculture
Bulletin No 3887 - Cattle Yard Construction, Western Australian Department Of Agriculture
Bulletins - 3000 - 3999
Good cattle yards allow animals to be handled quietly, safely and efficiently. If yards are well designed, animal uneasiness is minimised and so, too, are frayed tempers.
This bulletin outlines general points of cattle yard design and construction. There are many and varied cattle yard designs in use—many good ones and some bad ones. This bulletin should help in avoiding the bad ones.
An Historical Review Of Oil Spills Along The Maine Coast 1953-1973, Edward H. Shenton
An Historical Review Of Oil Spills Along The Maine Coast 1953-1973, Edward H. Shenton
Maine Collection
An Historical Review of Oil Spills Along the Maine Coast 1953-1973
by Edward H. Shenton
Prepared for The Maine State Planning Office, Coastal Planning Group and The Research Institute of the Gulf of Maine (TRIGOM), August, 1973.
TRIGOM Publication No. 3
Contents: Introduction / A Chronology of Significant Oil Spills / A Summary of Biological Impacts / Spill Statistics / Discussion of Results / Conclusions of the Study / Recommendations for Future Research / Appendices
Fisheries Report No Viii (8) - Report On A Visit Of Inspection To Barrow Island November 1969, A. A. Burbidge, A. R. Main
Fisheries Report No Viii (8) - Report On A Visit Of Inspection To Barrow Island November 1969, A. A. Burbidge, A. R. Main
Fisheries Research Reports
The aim of the inspection was to examine the effects on the fauna and flora of the oil exploration initiated in mid-1963 by West Australian Petroleum Pty. Ltd. (WAPET) and the construction and development programme which followed in 1966 and which is now nearing completion.
Water Conservation Handbook, D J. Carder, G. W. Spencer
Water Conservation Handbook, D J. Carder, G. W. Spencer
Natural resources published reports
This handbook is intended as a practical guide in some of the most common aspects of water conservation in the agricultural areas of Western Australia. It deals mainly with water conserved in dams for stock and domestic purposes on the farm.
the farm. The handbook does not attempt to deal with all aspects of handling and using water for agricultural purposes. This is a vast subject which extends into many fields such as engineering, irrigation and land use.
The guide does, however, touch on some important aspects of good management of agricultural land. It should be read in conjunction with …
Housing Pigs, P Mcnamara
Housing Pigs, P Mcnamara
Journal of the Department of Agriculture, Western Australia, Series 4
THERE are many designs for pig houses and much will depend on individual circumstances which is best in any particular case.
West Midlands Development : Development Techniques, Department Of Agriculture, Western Australia
West Midlands Development : Development Techniques, Department Of Agriculture, Western Australia
Journal of the Department of Agriculture, Western Australia, Series 4
Most clearing in the West Midlands is carried out by chaining, though the method chosen will depend on the country being cleared and on the resources of the farmer.
Land Grading In South West Irrigation Areas, 1966-67, Department Of Agriculture, Western Australia
Land Grading In South West Irrigation Areas, 1966-67, Department Of Agriculture, Western Australia
Journal of the Department of Agriculture, Western Australia, Series 4
Land grading in the South West Irrigation Areas with modern earth moving equipment first commenced in 1949.
The advantages of land grading are well recognised by farmers and this season grading operations were carried out on 208 farms.
Sow Yards, P Mcnamara
Sow Yards, P Mcnamara
Journal of the Department of Agriculture, Western Australia, Series 4
THE sow is the production unit in the pig enterprise and she must be carefully managed and fed both when suckling and in the dry period.
The use of a sow yard enables the management of the breeding herd to be closely controlled.
Septic Manure Ponds At Lower Kalgan, R Sprivulis
Septic Manure Ponds At Lower Kalgan, R Sprivulis
Journal of the Department of Agriculture, Western Australia, Series 4
BETTER pastures, increasing herd sizes and better quality cows are all contributing to increased production of skim milk and an expansion in pig and calf raising in the dairying areas.
Controlled Environment Broiler Houses In Western Australia, D F. Hessels
Controlled Environment Broiler Houses In Western Australia, D F. Hessels
Journal of the Department of Agriculture, Western Australia, Series 4
The three main features which contribute to the better returns from controlled environment broiler housing are higher density, better conversion and a reduction in labour.
The higher initial cost of housing and higher running costs are more than covered by these three advantages.
Piggery Septic System, N E. Macintyre
Piggery Septic System, N E. Macintyre
Journal of the Department of Agriculture, Western Australia, Series 4
ONE of the problems of intensive houses for pigs is the disposal of the dung and urine.
If proper arrangements are not made to remove this, it soon accumulates in an offensive pile at one end of the piggery, making an excellent breeding ground for flies.