Physical Sciences and Mathematics Commons^™

The Effects Of Rapid Heating And Cooling On The Composition, Structure, And Superconducting Properties Of Bi-Sr-Ca-Cu-O Compounds, Qing Duan

Dissertations and Theses

Bulk and thin film samples of Bi₂₋[subscript x]Pb[subscript x]Sr₂Ca₂Cu₃O[subscript y] compounds were prepared by suitable methods. The thin film and bulk samples were exposed to argon gas at temperatures of about 2000 °C and pressures of about 300 atm. in a ballistic compressor (BC) and then cooled at a rate of about 10⁵ °C/sec. The samples before and after this treatment were examined and compared using a transmission electron microscope (TEM), a scanning electron microscope (SEM), an energy dispersive spectrometer (EDS) , and an x-ray diffractometer (XRD). Resistance and magnetic susceptibility measurements were made to determine changes in superconducting temperature …

The Influence Of Alfalfa Root Structure On Plains Pocket Gopher Damage And Behavior, Bruce A. Jasch

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.

Water Current, Volume 24, December 1992

Water Current Newsletter

Seminar Series to Feature Global Perspective
Report from the Director
Argentina, Brazil Toured by Group from Nebraska
Czech Water Specialists Enumerate Contamination Problems
UNL Environmental Specialists Impressed by Hungarians
Foreign Influences on Nebraska Water Law
Trade, Environment, and Development, Tied Together in U.S. Trade Policy
Slovakian Grad Student Studies Aquaculture Here; Wants to Establish Fish Farm in Czechoslovakia
EARTH with Nebraska Connections Trains Agriculturists
La Mancha Plateau Aquifer Stressed by Intensive Irrigation
Hungarian Research Says Their Nitrogen Fertilizer Use Down
What's New?
Irrigation Association Centennial Spawns State Water-History Chronicle
Director of International Drought Information Center Receives Award
Dates to Use

Life Histories In An Epifaunal Community: Coupling Of Adult And Larval Processes, Brian L. Bingham

Environmental Sciences Faculty and Staff Publications

Marine invertebrates growing epifaunally on red mangrove (Rhizophora mangle) prop roots in the Indian River, Florida, USA, were studied in a small mangrove island (Jim Island) through which a number of channels had been cut. Roots hanging down into the water supported diverse epifaunal communities including sponges, oysters, barnacles, bryozoans, and ascidians. To determine what factors control species' population dynamics and contribute to the high degree of spatial heterogeneity characteristic of communities in this unique habitat, two hypotheses were tested: (1) Distributions of species on the roots are controlled by differential growth and mortality due to physical features; and (2) …

The Prairie Naturalist Volume 24, No.4 December 1992

The Prairie Naturalist

NEW VASCULAR PLANT RECORDS FOR NORTIl DAKOTA ▪ B. L. Heidel, A. J. Duxbury, W.T. Barker, and J. R. Challey

GROWTH OF BLUEGILLS AND YELLOW PERCH IN SOUTH DAKOTA WATERS ▪ D.w. Willis, J.P. Lott, C.S. Guy, and D.O. Lucchesi

SEASONAL VARIATION IN SAMPLING DATA FOR WALLEYE AND SAUGER COLLECTED WITH GILL NETS FROM LAKE SAKAKAWEA, NORTH DAKOTA ▪ S.W. Mero andD.W. Willis

OBSERVATIONS ON NESTING OF THE AMERICAN BITTERN IN NORTIlWEST MINNESOTA ▪ W D. Svedarsky

FOOD HABITS OF MOURNING DOVES IN EAST CENTRAL SOUTH DAKOTA ▪ J.T. Van't Hul and J.A. Jenks

DISTRIBUTION OF TIlE PYGMY SHREW IN …

Inventory Of Rare Plant Species In The Pine Ridge Area Of Nebraska (Dawes And Sioux County, Nebraska), Michael I. Fritz, Joyce Philips Hardy, Steven B. Rolfsmeier

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

The purpose of this project was to conduct a systematic inventory of rare plant species on the Pine Ridge District of the Nebraska National Forest. The objective of the inventory was to locate rare plant occurrences and compile information on their location, status and any possible threats. Four areas within the Pine Ridge District were identified as priority areas for the inventory fieldwork. The four tracts included the Soldier Creek Wilderness Area, a tract encompassing the East and West Ash Creek drainages, a middle unit tract, and a tract which straddles U.S. Highway 385 and encompasses a number of timber …

The Probe, Issue 128 - December 1992

The Probe: Newsletter of the National Animal Damage Control Association

Contents:

Reflections On An Onerous Deed
CALENDAR OF UPCOMING EVENTS
Coyote Urine Translocated by Flora
PETA Indictments Expected Soon
Plague Claims Bobcat Hunter
Colorado Voters Ban Spring Hunt; Arizonans Defeat Trapping Ban
Charter Member Says Good-Bye
Probe Should Be Advocate for ADC Activities
Bill Fitzwater III
Next Issue Jan/Feb
NADCA Renewals and Donations
New Logo Chosen for NADCA!

Coastal Rehabilitation Manual, Veronica P M Oma, D M. Clayton, J. B. Broun, C D M. Keating

Bulletins 4000 -

Provides an overview of the coastal environment to ensure that the natural environment and coastal processes are considered properly. Describes how to develop a successful coastal rehabilitation strategy and detail rehabilitation techniques applicable to Western Australia. Lists sources of further advice and information.

Distribution Of Submerged Aquatic Vegetation In The Chesapeake Bay And Tributaries And Chincoteague Bay - 1991, R J. Orth, Judith F. Nowak, Gary F. Anderson, Kevin P. Kiley, Jennifer R. Whiting

Reports

No abstract provided.

Correction Of Chromatic Aberration With An Electron Mirror, Michael Stewart Mauck

Dissertations and Theses

The theoretical basis for using electron mirrors as correctors of chromatic aberration is presented and an experimental verification of correction of chromatic aberration is demonstrated. A hyperbolic electrostatic electron mirror operating in its converging range and at unity magnification was used as a corrector. A novel separating system with deflections taking place at image planes was developed to implement the mirror without impairing the resolution. Correction was demonstrated in an electron optical probe system. The chromatic aberration was measured by means of the shadows cast by a fine mesh placed near the final image. The experimental method and equipment are …

Ground Water Flow And Water Resources Investigation Of The Auburn, Summers And Shakertown Springs Karst Ground Water Basins, Logan And Simpson Counties, Kentucky, William Howcroft

Masters Theses & Specialist Projects

The City of Auburn is faced with a number of problems relating to its dependency on two karst springs, Auburn and Summers Springs, to meet its water requirements. Besides being extremely vulnerable to contamination, the springs often discharge and insufficient volume of water needed for public consumption and dilution of the City’s treated wastewater. Thus the City wishes to find an additional source of water and views nearby Shakertown Spring as a possibility. The study has three main objectives: 1) delineation of the Auburn, Summers, and Shakertown Springs ground water basins, 2) determination of the volume of available water at …

Volume 6 - November 19, 1992

What on Earth

What on Earth was a short-run student publication by the Providence College Environmental and Wildlife Club. (Volume 6 - November 19, 1992 - 6 pages total.)

Mapping Instream Habitat On The San Juan River Using Airborne Videography, Michael J. Pucherelli, William P. Goettlicher, Bureau Of Reclamation, U.S Department Of The Interior

All U.S. Government Documents (Utah Regional Depository)

Concerns have been raised over the potential impacts of the Animas/LaPlata project and the regulation of Navajo Dam. Flow depletions in the San Juan River may adversely affect the remnant population of the native fish, particularly the endangered Colorado squawfish and the razorback sucker. A multiyear research program is currently being conducted on the San Juan River as a result of a Jeopardy Opinion delivered by the U.S. Fish and Wildlife Service on Animas/LaPlata and the subsequent Reasonable and Prudent Alternative that was accepted. A mulidisciplinary research team composed of representatives from the affected agencies is currently investigating the relationship …

The Probe, Issue 127 - November 1992

The Probe: Newsletter of the National Animal Damage Control Association

Contents:

Principles of Wildlife Damage Management
CALENDAR OF UPCOMING EVENTS
ADC Personnel Changes
Publications Available
ADC Takes Leading Role in Educational Efforts
Cattle Losses to Predators in 1991
"ADC" — New Animal Damage Control Magazine
Maine Gull Project Shows Positive Results
Wolf Sightings in Yellowstone?

Southern Nevada Effluent Wetlands: A Proposed Cooperative Venture Between The Bureau Of Reclamation & City Of Las Vegas, Bureau Of Reclamation

Publications (WR)

Throughout North America there is a growing interest in constructed wetlands, both as relatively inexpensive, low-maintenance systems for removing nutrients from wastewater, and as a means of using municipal wastewater to enhance wildlife habitat and create public use opportunities. Because wetlands appear to have good potential as a component in the overall management of scarce water resources, the Bureau of Reclamation (Reclamation) has undertaken several cooperative research and demonstration projects to evaluate their effectiveness in a variety of local environments.

While a number of projects have demonstrated that wetlands can be beneficially employed to improve water quality, few such projects …

Status Of The Public Oyster Resource Of Virginia - Fall 1992, Bruce J. Barber

Reports

oysters have been harvested from Virginia waters as long as humans have i):'lhabited the area. Depletion of natural stocks in the late 1880's led to the establishment of regulations by public fisheries agencies. A survey of bottom areas in which oysters grew naturally was completed in 1896 under the direction of Lt. Baylor, USN. These areas (over 243,000 acres) were set aside by legislative action for public use and have come to be known as the Baylor survey Grounds or Public oyster Grounds of Virginia, and are presently administered by the Virginia Marine Resources commission (VMRC). Twice a year the …

An Assessment Of Wildlife Utilization Between A Man-Made Marsh, An Adjacent Natural Marsh, And A Nearby Natural Marsh In Virginia, Kirk J. Havens, Lyle M. Varnell, Julie G. Bradshaw

Reports

The present study investigates the functions and values of man-made and natural tidal wetlands. The study is among the first to use simultaneous sampling techniques to investigate animal use preference between man-made and adjacent natural tidal wetlands.

Determination Of Pentachlorophenol In Wood And Leachate From Discarded Treated Wooden Poles, Yan Zha

Theses

Pentachlorophenol(PCP) has long been used as a preservative in the wood industry. The disposal of the used treated wood poles in landfill is of an environmental concern.

The study presented in this paper was designed to determine the leaching of pentachlorophenol from treated aged wood. An analytical method for HPLC determination of PCP was developed and validated to perform the analysis of pentachlorophenol in samples of the oringinal wood and leaching solutions.

Further studies involved the description of the PCP distribution in wood poles, the estimation of the leaching rate of PCP and the factors which influence the leaching rate …

Thermal Decomposition Of Dichloromethane In Absence And Presence Of Added Oxygen And/Or Methane, Hong-Ming Chiang

Theses

Thermal decomposition experiments on dichloromethane in absence and presence of added O₂ and/or ₄ and in argon bath gas were conducted in a tubular flow reactor. The thermal reactions were studied at 1 atmosphere pressure with residence times of 0.3 - 2.0 seconds in the temperature range from 680 to 840 °C.

The degradation of dichloromethane and the decomposition product distributions were studied in both oxidative and pyrolytic reaction environments. The slowest decay of dichloromethane occurred when CH₄ was present and 02 was absent. The concentration of all products, (except HCl, CO, and CO₂ in the oxidation), …

Bacterial Biosorption Of Heavy Metals From Liquid Wastestreams, Emilia Rus

Theses

In this study, immobilized activated sludge from a municipal wastewater aerobic treatment plant has been evaluated as a potential biosorbent for the removal of heavy metals from liquid waste streams. The method of immobilization consists of entrapment of the microorganisms in calcium alginate beads.

The affinity of immobilized activated sludge to cadmium, lead, chromium and copper has been evaluated under well defined laboratory conditions.

Initially, the time course of metallic ions uptake and the effect of pH and temperature on biosorption were studied for each metal. Then the biosorption pattern and the effect of biosorbent concentration on binding capacity were …

Bill #92-09-F - Contractual Agreement For Adopt-A-Spot Program, Wku Student Government Association

Student Government Association

Bill regarding Adopt-a-Spot litter program on Western Kentucky University campus.

Arkansas Agricultural Chemical Ground-Water Management Plan, Gerald King, Darryl Little, Tim Jessup, Charles Armstrong

Technical Reports

The Arkansas Agricultural Chemical Ground-Water Management Plan (SMP) is based on the Draft State Pesticide Ground- Water Management Plan Guidance and The Pesticides and Ground-Water Protection Strategy prepared by the U.S. Environmental Protection Agency (EPA). The need for a plan to protect ground water from contamination by agricultural chemicals and agents arises from evidence nationwide that using these chemicals can, in some instances, lead to contamination. In February 1988, EPA proposed a strategy to regulate certain pesticides by prohibiting their use in areas vulnerable to leaching unless a state develops and implements an acceptable management plan. The advantage of a …

Resource Law Notes Newsletter, No. 26, Fall Issue, Sept. 1992, University Of Colorado Boulder. Natural Resources Law Center

Resource Law Notes: The Newsletter of the Natural Resources Law Center (1984-2002)

No abstract provided.

Water Resources Review - October 1992 Vol 5 No 3, Annis Water Resources Institute

AWRI Reviews

No abstract provided.

The Planet, 1992, Volume 22, Issue 01, T. R. Morris, Huxley College Of The Environment, Western Washington University

The Planet

No abstract provided.

Use Of High-Energy Radiation For Degradation Of Environmental Pollutants, Robert D. Guthrie, Manjiri Patwardhan

KWRRI Research Reports

The purpose of this project was to explore the advantages and/or limitations of high-energy radiation treatment as a method for degrading organic pollutants, particularly aryl halides, in an aqueous medium. We have done analyses of ⁶⁰Co-irradiated samples and kinetic studies using pulsed electron beams. For aryl halides containing no more than two fused rings, the main products detected are those of simple halogen replacement by hydrogen, although the amount of aryl halide destroyed was always greater than the total amount of products detected. To accomplish halogen replacement by H, the reaction solvent may not be pure water but must …

The Probe, Issue 126 - October 1992

The Probe: Newsletter of the National Animal Damage Control Association

Gray Wolf Management and Re-Establishment in North America
CALENDAR OF UPCOMING EVENTS
NADCA Annual Meeting to Be Held in Kansas City
Renew Your NADCA Membership
Colorado Court Dismisses Wolf Lawsuit
Pred-X Tags Prove Less than Successful for Nevada Sheep Producer
Trapping Course Becomes Mandatory in British Columbia
NADCA Assists in Animal Use Survey
Recent Publications of Interest
Conibear Traps for Woodchucks
Letters: Wolves, Coyotes, Etc
Education About Wildlife Damage Control Important

Madagascar: Red Island Green Heart, Nat Quansah

Nat Quansah

No abstract provided.

The Boston Harbor Cleanup, Paul F. Levy, Michael S. Connor

New England Journal of Public Policy

Boston Harbor earned a widespread reputation as "the dirtiest harbor in the nation" during the 1988 presidential campaign. Well before that campaign began, though, efforts were under way to reduce the amount of pollution entering the harbor. The Massachusetts Water Resources Authority was created in 1985 to undertake a massive public works program — including construction of a 1.3 billion-gallon-per-day sewage treatment plant and a sludge fertilizer processing plant — to end the decades-old practice of dumping sewage wastes into the ocean. The program will also cause water and sewer charges to rise dramatically during a fifteen-year period.

The project …

A Three-Dimensional Circulation Model For Tampa Bay, Y. P. Sheng, J. K. Choi, S. B. Malakar, S. L. Schofield, D. Welter, E. Yassuda

Reports

Y. Peter Sheng, the Principal Investigator of the proposed study, has developed and applied three-dimensional hydrodynamic models since 1972. These models were developed for a variety of water bodies (including estuaries, lakes, and coastal waters) for a variety of government agencies (e.g., USEPA, USGS, SBNEP, USAE, SFWMD, and SJRWMD) and petroleum companies (Standard Oil and Mobil) to solve a variety of problems. Basically, the nature of the problem and the water body determines the purpose of the modeling study and hence the features and capabilities of the model.