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Articles 40261 - 40290 of 41052
Full-Text Articles in Entire DC Network
Selective Removal Of Color, Toc, And Thm Precursors From A Highly Colored Recycled Magnesium Sludge Using Granular Activated Carbon, Kathleen O. Gill
Selective Removal Of Color, Toc, And Thm Precursors From A Highly Colored Recycled Magnesium Sludge Using Granular Activated Carbon, Kathleen O. Gill
Retrospective Theses and Dissertations
The study investigated the ability of granular activated carbon (F-400) to remove organic color, TOCk and THM precursors from a highly organic-laden recycled magnesium sludge without reducing the magnesium concentration. This treatment was attempted in order to render the sludge a more effective coagulant for surface water purification. Adsorption effectiveness was assessed through Freundlich isotherms and continuous-flow GAC columns, with both procedures conducted at three pH values. Color and TOC were adsorbed more effectively at lower pH values, while adsorption of THM precursors was inhibited at low pH. Magnesium was not significantly adsorbed by the carbon. The carbon treatment of …
Trihalomethane Precursor Reduction Using Magnesium Coagulation, Christianne C. Ferraro
Trihalomethane Precursor Reduction Using Magnesium Coagulation, Christianne C. Ferraro
Retrospective Theses and Dissertations
This study investigated the effectiveness of the magnesium coagulation process in reduction of trihalomethane (THM) precursors. The water was obtained from Lake Washington, a highly colored potable water supply which is used by the City of Melbourne, Florida. The THM concentrations in the finished water at Melbourne currently exceed the THM standard of 0.1 mg/l. For Lake Washington water, treatment varies according to seasonal changes in water quality. During the dry period, the recycle magnesium does not perform effectively as a coagulant for THM precursor removal. This is because of the high levels of magnesium in the late water at …
Bulletin - September, 1981, Civil Aviation Medical Association
Bulletin - September, 1981, Civil Aviation Medical Association
Browse all Civil Aviation Medical Association Newsletters
A twelve page newsletter of the Civil Aviation Medical Association. The newsletter provided news about civil aviation medicine and information related to the organization.
Santa Clara Magazine, Volume 24 Number 1, Fall 1981, Santa Clara University
Santa Clara Magazine, Volume 24 Number 1, Fall 1981, Santa Clara University
Santa Clara Magazine
3- MEDIA AND MASS PSYCHOLOGY A not too gentle probe of the news media today. By Jerome Kroth.
9 - SAINTS, DIAMONDS AND BEARS A thoughtful comparison of education , today and 40 years ago. By William J. Rewak, S.J.
12 - SANTA CLARA POTPOURRI A chance to test your memory of campus features.
14 - THREE FOR ALL SEASONS Examining the interrelationship of three great Christian humanists. By Christiaan T. Lievestro.
18 - WHERE IS LOVE? Defining love in the new Catholic marriage law. By Theodore Mackin, S.J.
23 - TRACKING THE HIGH TECH BOOM The Silicon Valley is …
Vegetative Filter Treatment Of Livestock Feedlot Runoff, Elbert C. Dickey, D. H. Vanderholm
Vegetative Filter Treatment Of Livestock Feedlot Runoff, Elbert C. Dickey, D. H. Vanderholm
Department of Agricultural and Biological Systems Engineering: Faculty Publications
Four vegetative filters were installed on feedlots in central and northern Illinois. Two configurations were used: channelized Dow and overland Dow. After settling for partial solids removal, runoff was applied directly to the filters and allowed to Dow from the inlet to the outlet section. Results from measurement analyses and sampling of influent, effluent, and surface Dow at intermediate points were reported.
Most runoff events were infiltrated completely, resulting in no filter discharge. Runoff from larger events was partially discharged. Filters removed as much as 95% of nutrients and oxygen-demanding materials from the applied runoff on a weight basis, and …
Bulletin - June, 1981, Civil Aviation Medical Association
Bulletin - June, 1981, Civil Aviation Medical Association
Browse all Civil Aviation Medical Association Newsletters
An eight page newsletter of the Civil Aviation Medical Association. The newsletter provided news about civil aviation medicine and information related to the organization.
United States V. Western Europe : A Comparative Study Of Safeguarding Practice Against Hazards At The Point Of Operation In Metal Forming Systems, Jeffrey Joseph Schwalje
United States V. Western Europe : A Comparative Study Of Safeguarding Practice Against Hazards At The Point Of Operation In Metal Forming Systems, Jeffrey Joseph Schwalje
Theses
The problem of assuring safety for the worker at the point of operation of a metal stamping system is complex by virtue of the multiplicity of combinations possible between all conceivable dies and a press of suitable capacity.
The means of providing safeguarding prescriptions is further compounded by maintaining a viable means to enforce the safety regulations as demanded by law.
A comparative study of the approach to this problem was made between the practices in the United States with that of Great Britain, France and West Germany.
This was accomplished through the study of the available standards, codes and …
Control Of Construction Costs During Construction, David H. Foo
Control Of Construction Costs During Construction, David H. Foo
Theses
The construction of a major project requires a vast amount of time, money, material and human resources. Proper coordination of these elements into an array of activities is crutial to the success of the project if it is to be built on time and within budget. As technology advances, the complexity of the project increases the resources to build them remain finite, and therefore, the project manager must seek methods to improve control on the construction project.
This thesis provides an overall view of the relatively new and rapidly expanding field of cost engineering. Cost engineering may be defined as …
Mining The Deep Seabed Implications For International Law And American Foreign Policy, Steven H. Fitzgerald
Mining The Deep Seabed Implications For International Law And American Foreign Policy, Steven H. Fitzgerald
Graduate Program in International Studies Theses & Dissertations
Whether or not the United States may someday face a mineral shortage, the need for a coherent, unified minerals policy is critical to national objectives and national security. Deep-sea mining may be the answer to American (and world) mineral needs in the twenty-first century. However, there are numerous problems which must be dealt with and resolved in the near future, in order to enable the U.S. (and the world community) to take advantage of vast undersea resources. Deep-sea mining requires the development of technology, tremendous capital investments, and years of labor before production can begin. U.S. policy makers must decide …
Session 6: Discussion And Replies, Multiple Authors
Session 6: Discussion And Replies, Multiple Authors
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
No abstract provided.
Effect Of Backup Roll Length And Roll Neck Length On Profile For 4-H Mills, T. Ohto, Guna S. Selvaduray
Effect Of Backup Roll Length And Roll Neck Length On Profile For 4-H Mills, T. Ohto, Guna S. Selvaduray
Faculty Publications
No abstract provided.
A Mini-Computer Based General Purpose Interactive Computer Graphics Software System, Victor M. Haddock
A Mini-Computer Based General Purpose Interactive Computer Graphics Software System, Victor M. Haddock
Retrospective Theses and Dissertations
This research paper presents the description of a Mini-Computer Based General Purpose Interactive Computer Graphics Software System; which has been installed at the University of Central Florida, College of Engineering PDP 11/34 computer system. This system is a simplified version of MOVIE.BYU. MOVIE.BYU is a General Purpose Interactive Computer Graphics Software System that requires a computer with a word length of at least 32-bits. The MOVIE.BYU system was developed at the Brigham Young University, Utah. Extensive modification was required in order to satisfy the PDP 11/34 FORTRAN IV compiler. In addition, the program routines have been overlayed in order to …
A Simulation Model For Assessing Alternate Strategies For Beef Production With Land, Energy And Economic Constraints, Otto J. Loewer, E. M. Smith, G. Benock, Thomas C. Bridges, Larry G. Wells, Nelson Gay, S. Burgess, L. Springate, David L. Debertin
A Simulation Model For Assessing Alternate Strategies For Beef Production With Land, Energy And Economic Constraints, Otto J. Loewer, E. M. Smith, G. Benock, Thomas C. Bridges, Larry G. Wells, Nelson Gay, S. Burgess, L. Springate, David L. Debertin
Biosystems and Agricultural Engineering Faculty Publications
A computer model has been developed to analyze alternate management strategies and energy and economic constraints. Daily production of beef animals and growing crops is simulated in response to prevailing conditions and system interactions using the GASP IV simulation language. Complete inventories of plant dry matter, animal status, production resources and economic net worth are maintained over the simulation period.
Regulation Of Hazardous Waste Disposal On Agricultural Land, Joseph L. Taraba
Regulation Of Hazardous Waste Disposal On Agricultural Land, Joseph L. Taraba
Agricultural Engineering Extension Updates
In the Commonwealth of Kentucky, the Division of Waste Management (DWM) of the Department of Natural Resources and Environmental Protection (DNP & EP) has the responsibility of regulating the hazardous waste program. A policy statement from the DWM was issued on June 9, 1981, concerning wastes generated from agricultural operations, i.e., farming. In summary, the statutory definition of a hazardous waste does not apply to animal manures and crop residues that are returned to the soil as a fertilizer or as a soil conditioner. Further, it states a hazardous waste shall not apply to pesticides, herbicides or fertilizers or their …
Bulletin - January, 1981, Civil Aviation Medical Association
Bulletin - January, 1981, Civil Aviation Medical Association
Browse all Civil Aviation Medical Association Newsletters
An eleven page newsletter of the Civil Aviation Medical Association. The newsletter provided news about civil aviation medicine and information related to the organization.
The Occurrence Of Trihalomethane Compounds In Salt Lake City And Ogden, Utah, Drinking Water Supplies, Thomas Peters, V. Dean Adams, Dennis B. George
The Occurrence Of Trihalomethane Compounds In Salt Lake City And Ogden, Utah, Drinking Water Supplies, Thomas Peters, V. Dean Adams, Dennis B. George
Reports
A purge and trap, gas chromatography system was developed to analyze for trihalomethane (THMs) compounds at the ppb (parts per billion) level in drinking water. Monthly influent and effluent samples were taken from three Weber Basin Water Conservancy Distrcit treatment plants, three Salt Lake City water treatmetn platns, and one Slat Lake Metropolitan water treatment plant. In addition tap water samples were taken at various business and residential locations in Salt Lake City, Utah, and Ogen, Utah. All samples were analyzed for trihalomethanes and total organic carbon (TOC). In addition to monthly sampling, a comparison of the production of THMs …
A Survey And Evaluation Of Shallow Groundwater Contamination Hazards In The State Of Utah, Edward P. Fisk, Calvin G. Clyde
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 …
The Potential For Groundwater Contamination Along Basin Margins In The Arid West: Alluvial Fans And Lake Features, Calvin G. Clyde, Robert Q. Oaks, Peter T. Kolesar, Edward P. Fisk
The Potential For Groundwater Contamination Along Basin Margins In The Arid West: Alluvial Fans And Lake Features, Calvin G. Clyde, Robert Q. Oaks, Peter T. Kolesar, Edward P. Fisk
Reports
Many towns of the arid west were built upon alluvial fans and upon sites underlain by Pleistocene lake deposits. The objective of this study was to assess the potential impact of these activities of man upon groundwater quality within these geological features. Emphasis was placed on shallow groundwater quality after it was determined that deep groundwater is rarely contaminated at such sites. A reconnaissance of Utah and Nevada was made and four sites underlain by alluvial fans (Willard, Manti, Elsinore, and Spring City) and four sites underlain by lake shore deposits (Hyde Park, Fielding, Providence and Richmond) were selected in …
Water Quality In Pleasant Valley, Utah, Calvin G. Clyde, Dennis B. George, Kun Mo Lee, Phil Pucel, William Hay
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 …
Ph Neutralization And Phosphorus Removal From A Sulfur Dioxide (So2) Treated Wastewater Using Lime (Ca(Oh)2) Addition, V. Dean Adams, Richard J. Watts
Ph Neutralization And Phosphorus Removal From A Sulfur Dioxide (So2) Treated Wastewater Using Lime (Ca(Oh)2) Addition, V. Dean Adams, Richard J. Watts
Reports
No abstract provided.
Sulfur Dioxide Treatment Of Secondary Sewage: Effect On Viruses, V. Dean Adams
Sulfur Dioxide Treatment Of Secondary Sewage: Effect On Viruses, V. Dean Adams
Reports
No abstract provided.
Lime Neutralization Of So2 Treated Wastewater After Air Stripping, V. Dean Adams
Lime Neutralization Of So2 Treated Wastewater After Air Stripping, V. Dean Adams
Reports
No abstract provided.
High Voltage Powerline Injury Studies, A. Sances, S. J. Larson, J. F. Szablya, J. Derald Morgan, J. B. Myklebust
High Voltage Powerline Injury Studies, A. Sances, S. J. Larson, J. F. Szablya, J. Derald Morgan, J. B. Myklebust
Electrical and Computer Engineering Faculty Research & Creative Works
Current pathways and reconstructions of human injury after contact with distribution powerlines are not well understood. The impedance, currents, and modes of tissue destruction are rarely known. Eight anesthetized hogs, weighing 68 to 90 kg, were used in studies with potentials ranging from 2,100 to 14,400 volts. Electrical contact was made between the hindlimbs, from the hindlimb to forelimb, and over other regions of the body. Currents from 4 to 70 amperes rms and impedances ranging from 130 to 477 ohms were measured. Phase angles up to 40° were observed. Copyright © 1981 by The Institute of Electrical and Electronics …
A Study Of Industrial Arts Teachers' Opinions Of Gifted And Talented Students In Black Hawk County, Iowa, James Robert Wrona
A Study Of Industrial Arts Teachers' Opinions Of Gifted And Talented Students In Black Hawk County, Iowa, James Robert Wrona
Dissertations and Theses @ UNI
While the handicapped and disadvantaged have enjoyed the benefit of some unique industrial arts educational programming, relatively little has been done to provide for the special educational needs of gifted and talented students. This may be partially a result of little research completed associating the gifted and talented student with industrial arts. Additionally, legislative support for gifted and talented students has been lacking. It was not until 1978, with the passage of Public Law 95-561, that programs for gifted and talented students have been granted some funding on the federal level. Although this public law can authorize up to $35 …
Use Of Mycorrhizal Inoculation For Plant Establishment On Highway Sites : Interim Report, Stephen Dunning Verkade, David Foster Hamilton
Use Of Mycorrhizal Inoculation For Plant Establishment On Highway Sites : Interim Report, Stephen Dunning Verkade, David Foster Hamilton
JTRP Technical Reports
No abstract provided.