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Organochlorine Pesticide Residues In The Neotropical Migratory Passerine Birds, Birthe Borup

Honors Projects

In 1874 Othmar Ziedlert a German chemist was working on the synthesis and characterization of substituted aromatic hydrocarbons. In the process of his work he synthesized dichloro-diphenyl-trichloro-ethane commonly known as DDT. It was not until 1930 that its use as an insecticide was detected by Paul Muller who found that it was effective against potato beetles (Leptinotarsal declineata) and clothes moths, (Tineola besselliella ) (Dunlap 1981). Pure DDT is a white crystalline solid with a melting point of 109 C, and a vapor pressure of 0.025mPa at 20 C. Technical grade DDT is a white amorphous powder, consisting of a …

Adaptive Resonance Theory (Art): An Introduction, Lucien G. Heins, Daniel R. Tauritz

Computer Science Faculty Research & Creative Works

No abstract provided.

Effects Of Track Structure And Cell Inactivation On The Calculation Of Heavy Ion Mutation Rates In Mammalian Cells, Francis A. Cucinotta, J. W. Wilson, M. R. Shavers, Robert Katz

Robert Katz Publications

It has long been suggested that inactivation severely effects the probability of mutation by heavy ions in mammalian cells. Heavy ions have observed cross sections of inactivation that approach and sometimes exceed the geometric size of the cell nucleus in mammalian cells. In the track structure model of Katz the inactivation cross section is found by summing an inactivation probability over all impact parameters from the ion to the sensitive sites within the cell nucleus. The inactivation probability is evaluated using the dose-response of the system to γ-rays and the radial dose of the ions and may be equal to …

Effects Of Track Structure And Cell Inactivation On The Calculation Of Heavy Ion Mutation Rates In Mammalian Cells, Francis Cucinotta, J. W. Wilson, M.R. Shavers, Robert Katz

Robert Katz Publications

It has long been suggested that inactivation severely effects the probability of mutation by heavy ions in mammalian cells. Heavy ions have observed cross sections of inactivation that approach and sometimes exceed the geometric size of the cell nucleus in mammalian cells. In the track structure model of Katz the inactivation cross section is found by summing an inactivation probability over all impact parameters from the ion to the sensitive sites within the cell nucleus. The inactivation probability is evaluated using the dose-response of the system to γ-rays and the radial dose of the ions and may be equal to …

Dissociation Quotients Of Succinic Acid In Aqueous Sodium Chloride Media To 225°C, Richard Kettler, Donald A. Palmer, David J. Wesolowski

Department of Earth and Atmospheric Sciences: Faculty Publications

The first and second molal dissociation quotients of succinic acid were measured potentiometrically with a hydrogen-electrode, concentration cell. These measurements were carried out from 0 to 225"C over 25 ° intervals at five ionic strengths ranging from 0.1 to 5.0 molal (NaCl). The dissociation quotients from this and two other studies were combined and treated with empirical equations to yield the following thermodynamic quantities for the first acid dissociation equilibrium at 25°C: logK_1a = -4.210±0.003; Δ H_1̊a = 2.9±0.2 kJ-mol ^{- 1} ; ΔS_1̊a = -71±1 J-mol ^{- 1} -K ^-1; and ΔC_p̊,1a = -98±3 …

Feeding Responses To Predator-Based Repellents In The Mountain Beaver (Aplodontia Rufa), Gisela Epple, J. Russell Mason, Evgueny Aronov, Dale L. Nolte, Richard Hartz, Ron Kaloostian, Dan Campbell, Amos Smith Iii

United States Department of Agriculture Wildlife Services: Staff Publications

Predator odors have potential as feeding repellents for mammalian herbivores, including Aplodontia rufa, the mountain beaver. However, the repellency of major chemical constituents of natural predator scents for this species has not been evaluated. In this study, the effects of several synthetic sulfur compounds from predator scents on feeding by mountain beavers were assessed and compared to the effects of coyote (Canis latrans) urine. Retrieval of food by mountain beavers from bowls scented with either coyote urine, diluted with water to different concentrations, synthetic components of predator scents, or control odorants was studied. The following synthetic compounds …

Birds Associated With Blackbird Spring Feeding Sites In South Dakota, George M. Linz, David L. Bergman, William J. Bleier

United States Department of Agriculture Wildlife Services: Staff Publications

From 2 to 16 April 1993, we conducted road-side surveys of birds using harvested fields of small grains, soybeans, and wm within 8 km of two blackbird roosts in east central South Dakota. Blackbirds, waterfowl, killdeer, homed larks, ring-necked pheasants, and western meadowlarks were the most common buds recorded. The frequencies of blackbirds, non-game birds, terrestrial game birds, and waterfowl was not equally distributed within the three habitats (P = 0.U.23).

Land Management Report For The Kent River Catchment, Sue Kelly

Natural resources published reports

The Kent River Catchment is located in the South-West of Western Australia, approximately between latitudes 34° 15' and 35° 10' South and longitudes 116° 45" and 117° 50° East. The north-eastern boundary of the catchment stretches to the Albany Highway at Tenterden, and from there the catchment curves towards Rocky Gully before continuing to the South Coast (Figure 1.1.1). The catchment is located within the Shires of Cranbrook, Plantagenet and Denmark.

The Kent River Catchment is part of Basin 604, which is the Water Authority descriptor for the Kent, Bow and Kordabup River catchments collectively. Basin 604 has a total …

Remnant Vegetation Inventory On The Southern Agricultural Areas Of Western Australia., G R. Beeston, G Mlodowski, A Sanders, D True

Resource management technical reports

Remnant vegetation mapping and its incorporation into a Geographical Information System (GIS) data base is the first stage in an overall documentation and promotion of conservation of remnant vegetation in Western Australia. The primary objective of this project being to determine the amount, distribution and regional location of native vegetation remaining on private land in the agricultural area of south-west Western Australia.

Reading The Rangeland: A Guide To The Arid Shrublands Of Western Australia, Don Burnside, Alec Holm, Alan Payne, Georgina Wilson

All other publications

Managing the rangelands is complex. Soils and vegetation can vary considerably over short distances in distinct or subtle ways. Separating climatic from management influences on the condition of the land has always been difficult. Whether we live on a sheep station, in a country town, in an Aboriginal community, a mining camp, or even if we only visit the Australian outback, it is vital that we understand and appreciate the unique character and management requirements of the rangelands. Learning to ‘read the rangeland’ has been a slow process, involving the knowledge and skills of pastoralists, Aboriginal people and scientists. This …

Radon Reduction, Improvement Of Indoor Air Quality, And Energy Savings Through An Original Solar Ventilation System, Heather E. Rhoads

Dissertations and Theses @ UNI

This study evaluated the improvement of indoor air quality and energy savings achieved, by an original solar ventilation system installed at test sites exhibiting elevated radon levels. Conventional residential energy conservation measures that limit air exchange rates between the indoors and outdoors have been shown to increase concentrations of radioactive radon decay products as well as other indoor air contaminants. Growing concern about radon lung cancer risks, carbon monoxide poisoning, and the "sick building syndrome" have increased demand for improved indoor air quality. Due to added heating and cooling loads, ventilation generally incurs substantial installation and operational costs. All commercially …

Prey Selectivity By Naticid Gastropods From Tertiary Sediments Of The United States Coastal Plain, Robert N. Sickler

Theses and Dissertations

Previous studies have shown that naticid gastropod predators are highly selective of prey species in accordance with the Kitchell et al. (1981) cost-benefit model. In addition, earlier studies have demonstrated selectivity of drillhole siting and intraspecific prey size. This study focuses on prey selectivity by Oligocene naticid gastropods and is used to test Vermeij's (1987) hypothesis of escalation. The hypothesis of escalation states that biologic hazards have increased during the Phanerozoic and that organisms have either had to adapt to these hazards or face possible extinction (Vermeij, 1987). Naticid predation on molluscan assemblages is one of several examples used to …

John Muir Newsletter, Winter 1994/1995, John Muir Center For Regional Studies

Muir Center Newsletters (1981-2015)

John Muir Newsletter winter 19i4-9a university of the pacific volume 5, number 1 FOLLOWING MUIR'S FIRST SUMMER ROUTE by John Fiske (Editor's note: John Fiske, retired engineer and Muir aficionado, lives near Coulterville and has thoroughly explored the region, tracking Muir's 1869 route as described in My First Summer in the Sierra. A year ago he accompanied a group of Muir enthusiasts from Japan on an excursion that began near Snelling and ended in Tuolumne Meadows. Fiske's trail notes are reprinted below. His meticulous research, and his careful delineation of the current topography and nomenclature, are valuable contributions to modern …

The Probe, Issue # 150 -- December 1994

The Probe: Newsletter of the National Animal Damage Control Association

Raccoon Rabies Epizootic - United States 1993
NPCA Concerned About Competition From ADC for Bird Control Jobs
Translocation of Wild Canids Brings Disease Threats
California Assemblyman Says "Time to Repeal Mountain Lion Initiative"
NADCA Information/Techniques Committee Wants YOU
Call for Nominations for Beiryman Institute Awards
Well! At Least We Told 'Em How It Is (1980 article), by George S. Rost

A Guide To Floodplain Cattle Fencing, Department Of Agriculture, Western Australia, Main Roads, Western Australia

Animal production and livestock published reports

A seminar and workshop was held at Fitzroy Crossing in October 1993 to address the consequences of flooding to landholders and communities.

Damage to flood plain fencing was identified as one of the major concerns to landholders.

An outcome from the workshop was the decision to draw on local knowledge and collate information on options for fence and floodgate designs.

This information was to be made available to land holders and other interested parties - hence this publication.

Water Current, Volume 26, No. 6, December 1994

Water Current Newsletter

Waste Management Problem Focus of '95 Seminars
From the Director
Policies Topic of '95 Conference
Glossary of Water-Related Terms
Researchers Try to Outsmart Hardy Pests
Reflections on a Year Well Spent
Scientific Conference "In the Bush"
Symposium Spurs Water Discussion

Performance Monitoring Of Hybrid Intelligent Systems, Nariman Abdel Baky, Fikret Ercal

Computer Science Technical Reports

Development of an automated system to enable the ongoing monitoring and control of the performance of HIS is a step towards increasing the confidence and security with which ordinary users will perceive AI-based Systems. The main objective of this research was to develop a prototype intelligent system to perform this monitoring. The proposed monitming system integrates performance metrics for the HIS's components with heuristics for evaluating data quality by checking data types, data ranges, percentage of missing data and the composition of data. The research demonstrated the possibility of developing such system and the feasibility of using it for a …

The Pollution Effects Of Pleasure/Work Boat Sewage Discharges On Fecal Contamination Levels Of Waters In And Around Marinas And Other Places Where Boats Are Moored On The Eastern Shore Of Virginia, George H. Bangs

Community & Environmental Health Theses & Dissertations

Contamination of seafood harvested from and recreational areas of the Chesapeake Bay, its tributaries and the Atlantic coast inshore waters may cause health problems for people consuming the seafood or coming in contact with the waters by swimming, water skiing, or other water sports. These health problems include, but not limited to, dysentery, typhoid and hepatitis (Natchez, 1990). This is a preliminary study into the level of fecal pollution generated by sewage discharges from boats in marinas and other places where boats are moored on the Eastern Shore of Virginia. Sites selected for the study included; (I) marinas and other …

Magnetotaxis And Magnetic Particles In Bacteria, Richard B. Frankel, Dennis A. Bazylinski

Physics

Magnetotactic bacteria contain magnetic particles that constitute a permanent magnetic dipole and cause each cell to orient and migrate along geomagnetic field lines. Recent results relevant to the biomineralization process and to the function of magnetotaxis are discussed.

Unification Of Larch And Z-Based Object Models To Support Algebraically-Based Design Refinement: The Z Perspective, Kathleen M. Wabiszewski

Theses and Dissertations

This research established a foundation for formalizing the evolution of based object models to theories, part of a dual approach for formally extending object-oriented analysis models using the Z and LARCH languages. For the initial phase, a comprehensive, consistent, and correct Z language parser was implemented within the SOFTWARE REFINERY™ Programming Environment. The Z parser produced abstract syntax trees (ASTs) of objects, thereby forming the basis for analyzing the similarities and differences between the based and LARCH-based object representations. The second phase used the analysis of the two languages to identify fundamental core constructs that consisted of similar syntactic and …

A Comparison Of Error Categorization Schemes For Use In Software System Safety Programs, Richard Escobedo, Jim Thomas

Theses and Dissertations

Software safety is becoming increasingly important in the development of DoD advanced weapon systems. To make software safer, hazard conditions must be avoided along with the errors that accompany them. The first step in identifying errors is classifying error data. The area of software error classification is not as advanced as other software development areas. The technical literature lacks examples of comprehensive taxonomies that can be applied to various computer software domains and applications. The predominant approach is to organize errors into categories particular to the program currently in work. The typical error scheme is made of narrow categories that …

Autonomous Robot Navigation In Unknown Terrains Using Parallel Numerical Artificial Potential Fields, John C. Schneider

Computer Science Theses & Dissertations

We present a new artificial potential field formulation for resolution complete robot navigation that unifies the purely geometric path planning problem with the lower level force control problem. Our formulation is designed for numerical computation over a massively parallel mesh of processors and is responsive to newly discovered terrain features. It does not suffer from many of the problems commonly associated with potential fields and with adequate resolution provides provably correct, collision free convergence to the goal. In addition, our formulation supports many desirable, practical features required for implementation, such as bounded actuator torques, attainable incremental constructability, realizable computation and …

A Comparison Of Plotless Density Estimators Using Monte Carlo Simulation, Richard M. Engeman, Robert T. Sugihara, Larry F. Pank, William E. Dusenberry

United States Department of Agriculture Wildlife Services: Staff Publications

We conducted an extensive simulation study to compare the performance of a large group of plotless density estimators (PDEs) to obtain clarification of their relative performance in a diversity of sampling situations. The PDEs studied included well-known ones from the literature plus some extensions and modifications introduced here. The simulations cover 96 combinations of 6 spatial patterns, 4 sample sizes, and 4 population densities. We made comparisons within classes of similar estimators, and we indicate the best-performing PDEs out of the complete set studied. Over all spatial patterns, the angle-order estimator with measurements to the third closest individual in each …

Wildlife Diseases And Humans, Robert G. Mclean

Prevention and Control of Wildlife Damage Handbook

General Precautions

Directly transmitted diseases: rabies, hantavirus, trichinosis, mosquito-borne encephalitis

Tick-borne diseases: Colorado tick tever, Rocky Mountain spotted fever (tick-borne typhus), Lyme disease, tularemia, relapsing fever

Personal protection

Flea-borne diseases: plague, murine, typhus, fever commensal rodent-borne diseases, rat-bite fever, leptospirosis (Weil’s disease), salmonellosis, rickettsialpox

Bird-borne diseases: histoplasmosis, ornithosis, salmonellosis

Iron Core Formation In Horse Spleen Ferritin: Magnetic Susceptibility, Ph, And Compositional Studies, S. Hilty, B. Webb, Richard B. Frankel, G. D. Watt

Physics

Horse spleen ferritin (HoSF) reconstituted with small iron cores ranging in size from 8 to 500 iron atoms was studied by magnetic susceptibility and pH measurements to determine when the added Fe³⁺ begins to aggregate and form antiferromagnetically coupled clusters and also to determine the hydrolytic state of the iron at low iron loading. The Evans NMR magnetic susceptibility measurements showed that at iron loadings as low as 8 Fe³⁺/HoSF, at least half of the added iron atoms were involved in antiferromagnetic exchange interactions and the other half were present as isolated iron atoms with S = …

Multimedia Authoring, Development Environments, And Digital Video Editing, Fillia Makedon, James W. Matthews, Charles B. Owen, Samuel A. Rebelsky

Dartmouth Scholarship

Multimedia systems integrate text, audio, video, graphics, and other media and allow them to be utilized in a combined and interactive manner. Using this exciting and rapidly developing technology, multimedia applications can provide extensive benefits in a variety of arenas, including research, education, medicine, and commerce. While there are many commercial multimedia development packages, the easy and fast creation of a useful, full-featured multimedia document is not yet a straightforward task.

This paper addresses issues in the development of multimedia documents, ranging from user-interface tools that manipulate multimedia documents to multimedia communication technologies such as compression, digital video editing and …

The Probe, Issue # 149 -- November 1994

The Probe: Newsletter of the National Animal Damage Control Association

Guidelines for euthanasia of domestic animals by firearms J. (Al) Longair, Gordon G. Finley, Marie-Andree Laniel, Clayton MacKay, Ken Mould, Ernest D. Olfert, Harry Rowsell, Allan Preston
What is NADCA's Role in NWCO Certification?
Setting Prices for Animal Damage Control Services
Saccharin Samaritans
Part 2: Hantavirus Prevention
NADCA Region 4 Director Moves to Texas
Trapping Weasels

Center For Sustainable Agricultural Systems Newsletter, November/December 1994

Center for Sustainable Agricultural Systems: Newsletter (1993–2000)

Contents:

Heidi Carter is New Education Coordinator

Rural Community Development Resources

Diversity and Sustainable Future Systems

In the Seminar Spotlight-Joel Salatin

Nebraska Ag IMPACT Project Set To Begin

Private Extension System in Argentina

Cuban Agriculture Reorients Toward Sustainability

Resource Guide On Sustainable Ag Materials

Biotechnology and Sustainable Agriculture: A Bibliography

California Passes BIOS Bill

EPA Conducts Special Review of Triazines

Criteria for Judging Relevancy Of Research To Sustainable Ag

Efficient Parallel Algorithms For Closest Point Problems, Peter Su

Dartmouth College Ph.D Dissertations

This dissertation develops and studies fast algorithms for solving closest point problems. Algorithms for such problems have applications in many areas including statistical classification, crystallography, data compression, and finite element analysis. In addition to a comprehensive empirical study of known sequential methods, I introduce new parallel algorithms for these problems that are both efficient and practical. I present a simple and flexible programming model for designing and analyzing parallel algorithms. Also, I describe fast parallel algorithms for nearest-neighbor searching and constructing Voronoi diagrams. Finally, I demonstrate that my algorithms actually obtain good performance on a wide variety of machine architectures. …

The Moore's Creek Monitoring Project, D. R. Edwards, T, C, Daniel, J. F. Murdoch, P. F. Vendrell, D. J. Nichols

Arkansas Water Resources Center Technical Reports

No abstract provided.