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The Characterization Of An Amiid Species From The Fort Union Rock Formation Of The Early Paleocene, Alexis Penot

Honors Capstone Projects and Theses

No abstract provided.

An Examination Of Environmental Sensitivity Among Supporters Of An Outdoor Recreation Area, Rodney James Blackman

Dissertations and Theses @ UNI

The environment as an issue has been prominently before the public for over three decades. Yet the question of how much people know about the natural environment and how committed they are to the environment has seldom been considered in research literature. Research of this nature is needed because without it individuals interested in the preservation and conservation of the environment cannot be sure how their efforts to increase people's environmental sensitivity should be applied. The purpose of this study was to examine the level and extent of environmental sensitivity among supporters of an outdoor recreation area/facility in northeast Iowa. …

Efficient And General Synthesis Of Novel Β-Polyfluoroalkoxy Vinamidinium Salts, Koichiro Kase, Mitsuyoshi Katayama, Takashi Ishihara, Hiroki Yamanaka, John T. Gupton

Chemistry Faculty Publications

Novel β-polyfluoroalkoxy vinamidinium salts 3 and/or 4 were synthesized in good yields by the reaction of N-(2- polyfluoroalkoxy-3 ,3-difluoro-1-propenyI)trimethylammonium iodides (2), prepared from N-(2,3,3-trifluoro-1-propenyl)trimethylammonium iodide (1), with secondary amines in MeCN at 70 °C for 1 h. The salts were also obtainable in comparable yields by the one-pot reaction of 1 with sodium polyfluoroalkoxide followed by treatment with amines.

Overview Of Tunisia's Marine Environment In Support Of Administrative Policies And Programmes, Fredj Derouiche

World Maritime University Dissertations

The dissertation is a real investigation in the marine environment field, which few people are familiar with, although it concerns everybody. The investigation being carried out in three steps; each step covering one aspect of the marine environment, and the result is given in the conclusion. As a first step, the main problems affecting the marine environment in Tunisia, are identified and analysed. An attempt is made to identify the impact of such problems on the marine environment, human health and the national economy. In the second part, the institutional framework, dealing with the marine environment, is presented and analysed. …

A Floristic Study Of The Republican River Valley In Nebraska With Emphasis On Endangered, Threatened, And Rare Plants, Steven J. Rothenberger

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

The objectives of this study were: (1) to survey the Republican River Valley and selected tributaries in Nebraska for rare plant species (as listed by the Nebraska Natural Heritage program) and determine the present status of these species; (2) to identify and describe potential natural areas that, because of their location and/or species composition, are thought to have ecological value; (3) to complie a plant species check list for the study area in order to better understand species distributions and associations that impact rare species; and (4) to speculate as to the effect of instream river flows on the distribution …

Lissodelphis Peroni, Michael W. Newcomer, Thomas A. Jefferson, Robert L. Brownell Jr.

United States Department of Commerce: Staff Publications

Order Cetacea, Suborder Odontoceti, Family Delphinidae. The subfamily Lissodelphinae has been proposed for this genus (Fraser and Purves, 1960), but it has not been universally accepted (Kasuya, 1973). There are two species in the genus: Lissodelphis peronii (southern right whale dolphin) and L. borealis (northern right whale dolphin). Lissodelphis peronii currently contains no subspecies.

Ventilation Rates For Carassius Auratus During Changes In Dissolved Oxygen, Collin Nolan

UNLV Theses, Dissertations, Professional Papers, and Capstones

This experiment was designed to determine whether dissolved oxygen concentrations would influence the ventilation rate of goldfish, Carassius auratus. Ventilation rate can be determined by counting opercular movements. Opercular movements of the same five goldfish were counted at three different levels of dissolved oxygen to determine whether there were differences in ventilation rates. Average ventilation rates were established for each of the three levels of dissolved oxygen and compared statistically. There were significant differences in the ventilation rates averages at each of the three levels. Carassius auratus will exhibit changes in ventilation rates when dissolved oxygen levels change.

Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, Volume 12, Number 10, December 1996, College Of Engineering And Computer Science, Wright State University

BITs and PCs Newsletter

A twelve page newsletter created by the Wright State University College of Engineering and Computer Science that addresses the current affairs of the college.

A Study Of The Behavior Of Chlorine And Organic Compounds During Combustion In An Afbc System, Jenny Heidbrink

Masters Theses & Specialist Projects

The purpose of this study is to understand the behavior of chlorine and the emission of organic compounds during combustion in an atmospheric fluidized bed combustion (AFBC) system. Inefficient, uncontrolled use of coal gives rise to organic emissions which can be detrimental to health. The chlorine in coal may cause corrosion problems during utilization, if its concentration is high enough. The method for collection of the emissions of organic compounds involved the use of a Tenax resin as an absorbent for the organic compounds as they were emitted from the combustor. A combined gas chromatography - mass spectrometry (GC-MS) technique …

Evaluation Of Constructed Wetlands For The Waste Management Of A Large Scale Swine Production Unit, Robert Sutton

Masters Theses & Specialist Projects

The effectiveness of using constructed wetlands to remove unwanted nutrients, increase dissolved oxygen while at the same time decreasing the biological oxygen demand, and to reduce the levels of the Fecal Coliform Bacteria from a swine operation was evaluated. The indicator of proper waste purification will be the result of testing for the following: ammonia nitrogen, nitrate nitrogen, total phosphorus, total suspended solids, dissolved solids, dissolved oxygen, biological oxygen demand, and Fecal Coliform Bacteria. The wetland was divided into nine connected cells that covered approximately 3.8 hectares. Material was loaded from an anaerobic holding lagoon on four separate occasions during …

Assessment Of The Status Of Harbor Porpoise (Phocoena Phocoena) In Oregon And Washington Waters, S. Osmek, J. Calambokidis, J. Laake, P. Gearin, R. Delong, J. Scordino, S. Jeffries, R. Brown

United States Department of Commerce: Staff Publications

The status of harbor porpoise, Phocoena phocoena, is reviewed for stocks in Oregon and Washington waters, and the adjacent transboundary waters of southern British Columbia, Canada, emphasizing the most recent data on their geographic range, population structure, distribution, population size, trends in abundance, and reproductive biology. This information is used to determine if the annual rate of incidental mortality and serious injury in gill-net fisheries from 1990-94 could be at a biologically significant level.

In the eastern North Pacific Ocean, harbor porpoise are found near the coast, generally in water depths of less than 200 m. Differences in harbor porpoise …

Acknowledgements, The Mcnair Team

McNair Scholars Research Journal

No abstract provided.

The Probe, Issue 172 – December 1996

The Probe: Newsletter of the National Animal Damage Control Association

A Conservation Dilemma-The Free-Ranging Domestic Cat, by John Coleman, Stan Temple, and Scott Craven, Department of Wildlife Ecology, University of Wisconsin, Madison
9th Northern Furbearer Conference on May 22-23,1997 in Yellowknife, Northwest Territories, Canada: Second Announcement / First Call for Papers
Darrel Juve to Retire
Wolves Attack People in Kazakhstan
Video Review: "Basic Coyote Control" produced by Tom Beaudette of High Country Control
Australian Wants to Unleash Fatal Virus on Felines

Abstracts Published at the 3rd Annual Conference of The Wildlife Society:

Leghold Traps: An Overview of Social and Biological Issues Behind the Controversy, William F. Andelt, Robert L. Phillips, …

Water Current, Volume 28, No. 6, December 1996

Water Current Newsletter

UNL Remediation Research Gets NSF/EPSCoR Funding Boost
From the Director: Implementation Plans Continue for "School of Natural Resources;" New Staff Joins Water Center
Drought, Climate Change Effects on Aquifer Are Topics for 26th Water Conference
New Database Aids Navigating Platte River Information
Applicator Training Sessions to Start Again Next Month
"When the Rains Don't Come" Subject of Seminar Series
Spaldings Speak at Korea's Cheju University

New Enantioselective Lewis Acid Catalysts, Mustafa Guzel

All Theses

Recently, many organic chemists have been ultimately interested in research in the synthesis of enantiomerically pure organics which are useful to synthesis of biologically active agents and prodrug substances. In the past decades, the new concepts in catalyst design unexpectedly explored the direction of natural product synthesis. In many cases, using enantioselective catalysts are the most suitable and efficient method into enantiopure systems.

The Effects Of Wet Meadow Fragmentation On Grassland Birds, Christopher J. Helzer

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

No abstract provided.

Full Issue, The Mcnair Team

McNair Scholars Research Journal

No abstract provided.

The Effect Of Chromium Compounds On The Mutagenic Rate Of Benzo[A]Pyrenediolepoxide In Human Fibroblasts, Yordanos Tesfai

Masters Theses

Cancer researchers are interested in identifying the environmental causes and synergistic influences of different chemical carcinogens in order to decrease the risk of cancer. There are numerous studies which have investigated the effect of individual carcinogens but relatively few in which a well defined mixture of chemicals have been used. The present study was performed to examine the effect of chromium compounds on benzo[a]pyrene diolepoxide (BPDE) induced cytotoxicity and mutagenicity in human fibroblasts. Cytotoxicity was measured by the ability to fonn colonies while selection of 6-thioguanine resistant mutants were used to study mutagenesis in human fibroblasts.

Our results indicate that …

Rapid Method For Determination Of Iodine Numbers Of Vegetable Oils, Ondrej Hendl

Masters Theses

There is a great deal of interest by the public about the total unsaturation of fats and oils used in commercial products as an indication of nutritional value. Dealers in fats and oils are extremely interested in characterizing these products. The unsaturation is a guide to the expected stability of food additives, such as edible oils and foods in which they are used. Unsaturation is typically evaluated as an iodine number (IN), calculated for these additives based on their consumption of iodine through addition across the carbon-carbon double bonds. The classical titration method can typically take 45 minutes.

The investigation …

The Biodegradation Characteristics Of Proposed Fuel Systems Icing Inhibitors (Fsii), Charles E. Meshako

Theses and Dissertations

The biodegradation characteristics of three fuel system icing ihhibitors (FSII) were evaluated. FSII are jet fuel additives that partition into water readily and are present in the water drained from storage tank bottoms in concentrations approaching 40%. These concentrations raise concerns as to the disposal and handling of these wastes. The current FSII, DiEGME was evaluated along with two new candidates, dipropylene glycol and glycerol formal. DiEGME appeared to be moderately but not completely biodegradable. It is likely that much of it would be removed in a wastewater treatment plant. Dipropylene glycol only showed signs of degradation after more than …

Inhomogeneity In Gelation And Nonuniversality Of Sol-To-Gel Transitions Studied By A Computer Simulation Model, Yi-Min Liu, R.B. Pandey

Faculty Publications

No abstract provided.

On The Approximate Pattern Occurrences In A Text, Mireille Régnier, Wojciech Szpankowski

Department of Computer Science Technical Reports

No abstract provided.

Dynamic Scheduling Of Process Groups, Kuei Yu Wang, Dan C. Marinescu, Octavian F. Carbunar

Department of Computer Science Technical Reports

No abstract provided.

Knowledge Discovery In Computational Science: A Case Study In Algorithm Selection, N. Ramakrishnan, John R. Rice

Department of Computer Science Technical Reports

No abstract provided.

Side Chain Effect On Micellarly Catalyzed Hydrolysis Of Hydroxamic Acids In Perfluorooctanoic Acid Environment, A.C. Menik Fernando

Masters Theses

The side chain effect on micellar catalysis of hydroxamic acids with perfluorooctanoic acid as the reactive counterion surfactant in aqueous acetonitrile solution has been demonstrated in this thesis.

The rate constant-surfactant concentration profiles were used to estimate the critical micelle concentration and the second order rate constant for hydrolysis in the aqueous bulk phase.

The pseudo-phase ion exchange model satisfactorily explains the surfactant effect. The second order rate constants in the aqueous bulk phase show a direct relationship with steric substituent constants. The major influence of the change in micellar catalysis is the location in the micelle where the substrate …

The Prairie Naturalist Volume 28, No. 4. December 1996

The Prairie Naturalist

IMPLANTED MICROCHIPS USED TO INDIVIDUALLY IDENTIFY BLACK-FOOTED FERRETS IN MONTANA ▪ R. Stoneberg

GRAY WOLF STATUS IN NORTH DAKOTA ▪ D. S Licht and L. E. Huffman

VARIATION IN SELECTION OF MICROHABITATS BY MERRIAM'S TURKEY BROOD HENS ▪ M. A. Rumble and S. H. Anderson

SURVIVAL AND REPRODUCTIVE CHRONOLOGY OF FEMALE RING-NECKED PHEASANTS IN SOUTH DAKOTA ▪ A. P. Leif

EFFECTS OF LOGGING SLASH ON ASPEN REGENERATION IN GRAZED CLEARCUTS ▪ M. A. Rumble, T. Pella, J. C. Sharps. A. V. Carter, and J. B. Parrish

BOOK REVIEWS

The Poetry of Ecoregions ▪ J. Pastor

Saving Texas' Rare Ones ▪ …

Efficient Parallel Algorithms On Reconfigurable Mesh Architectures, His-Chieh Lee, Fikret Ercal

Computer Science Technical Reports

This dissertation describes a number of novel parallel algorithms for solving maze-routing problems and string matching problems on a proposed reconfigurable mesh architecture.

Section I reviews the field of reconfigurable parallel computing. This includes an introduction to a number of reconfigurable architectures proposed in the literature and a list of references to the current literature on algorithms in the field of reconfigurable computing.

Section II presents a number of time-efficient algorithms to solve the mazerouting problem. Maze-routing algorithms are used in VLSI routing and robot path planning. In that section, definitions for absolute shortest path (ASP), shortest duplex-path (SDP), shortest …

Evaluation Of Carcinogenic Potential Of Benzo(Α)Pyrene And Dimethylbenzanthracene In Mouse Leukemic Cells, Mohammad Sharif Sultan Al Ulama

Theses

The carcinogenic potential of benzo[α]pyrene (B(α)P) and dimethylbenzanthracene (DMBA) was tested using mouse leukemic cell lines L-5178 R and S types in tissue culture condition. It was found that B(α)P and DMBA inhibited the synthesis of DNA of R and S types of cells to about 34%, at 10 mM concentration. While B(α)P and DMBA did not show any acute toxic effect on mouse cell line Rand S types at 1 mM concentration separately. Both R and S types of cells were allowed to grow for several days in the presence of 1 mM DMBA and B(α)P respectively. Several independent …

Analysis Of Linkage-Friendly Genetic Algorithms, Laurence D. Merkle

Theses and Dissertations

Evolutionary algorithms (EAs) are stochastic population-based algorithms inspired by the natural processes of selection, mutation, and recombination. EAs are often employed as optimum seeking techniques. A formal framework for EAs is proposed, in which evolutionary operators are viewed as mappings from parameter spaces to spaces of random functions. Formal definitions within this framework capture the distinguishing characteristics of the classes of recombination, mutation, and selection operators. EAs which use strictly invariant selection operators and order invariant representation schemes comprise the class of linkage-friendly genetic algorithms (lfGAs). Fast messy genetic algorithms (fmGAs) are lfGAs which use binary tournament selection (BTS) with …

Pulse Coupled Neural Networks For The Segmentation Of Magnetic Resonance Brain Images, Shane L. Abrahamson

Theses and Dissertations

This research develops an automated method for segmenting Magnetic Resonance (MR) brain images based on Pulse Coupled Neural Networks (PCNN). MR brain image segmentation has proven difficult, primarily due to scanning artifacts such as interscan and intrascan intensity inhomogeneities. The method developed and presented here uses a PCNN to both filter and segment MR brain images. The technique begins by preprocessing images with a PCNN filter to reduce scanning artifacts. Images are then contrast enhanced via histogram equalization. Finally, a PCNN is used to segment the images to arrive at the final result. Modifications to the original PCNN model are …