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Aurealcaulis Crossii Gen. Et Sp. Nov., An Arborescent, Osmundaceous Trunk From The Fort Union Formation (Paleocene), Wyoming, William D. Tidwell, Lee R. Parker

Faculty Publications

Aurealcaulis crossii gen. et sp. nov., is based on permineralized trunks of an osmundaceous tree fern from the Paleocene Fort Union Formation from near Bitter Creek Station of southwestern Wyoming. This new species is characterized by centripetal (exarch) development of its xylem strands which form part of the leaf traces. Most of the leaf traces depart the stele as two segments that fuse into a single C-shaped petiole vascular strand outside of the outer cortex. Stipular expansions of the petiole bases of this species lack sclerenchyma, and roots arise from the lateral edges of leaf traces in the inner cortex. …

Case-Control Study Of Vitamin A Intake And Colorectal Cancer In Seventh-Day Adventists, John William Morgan

Loma Linda University Electronic Theses, Dissertations & Projects

Colorectal cancer is the second most common cause of cancer deaths in Americans; producing approximately 60,000 deaths in Americans each year. Studies of high and low risk populations have suggested a dietary etiology for colorectal cancer, although investigations of specific dietary factors have produced inconsistent results.

Population based studies of California Seventh-day Adventists demonstrate dietary variety regarding factors suspected as important in the etiology of colorectal cancer. These studies document a substantially reduced mortality and incidence from colorectal cancer in Seventh-day Adventists when compared to other California Populations. Although specific reasons for this difference remain obscure, the 'Unique lifestyle and …

Paleoenvironments Of The Eocene Green River Formation (Laney Member) In The Anvil Wash Area, Southwestern Wyoming, M. Elaine Graham-Kennedy

Loma Linda University Electronic Theses, Dissertations & Projects

The study of abundant conchostracans in the Laney Member of the Green River Formation, Wyoming, has contributed to the resolution of the controversy over the depositional environment of finely laminated sediments. Conchostracans that typically live in ephemeral pools, pulmonate gastropods that require oxygenated water and freshwater ostracods indicate deposition of finely laminated sediments in a well oxygenated, shallow, freshwater lake. Mineralogical evidence indicating that Lake Gosiute was primarily fresh during deposition of the upper portion of the Laney Member includes predominance of calcite over dolomite and the clay composition of diagenetically altered tuffs. The minor amount of dolomite is detrital …

The Prairie Naturalist Volume 19, No.2. June 1987

The Prairie Naturalist

Paul B. Kannowski, Editor

Nikki R. Seabloom, Assistant Editor

Douglas H. Johnson, Book Review Editor

TABLE OF CONTENTS

WESTERN SNOWBERRY COMMUNITY STRUCTURE IN SOUTH CENTRAL NORTH DAKOTA ▪ D. R. Kirby and T. A. Ransom-Nelson

LIFE-FORMS AND GEOGRAPHIC AFFINITIES OF THE SOUTHEASTERN NORTH DAKOTA FLORA ▪ G. J. Seiler and W. T. Barker

THE EFFECT OF BURNING AND INSECT HERBIVORY ON SEED PRODUCTION OF TWO PRAIRIE FORBS ▪ M. A. Davis, K. M. Lemon, and A. M. Dybvig

CANVASBACK NESTING ON MAN-MADE ISLANDS IN MONTANA ▪ D. M. Prellwitz

CHRISTMAS BIRD COUNTS FOR NORTH DAKOTA - 1986 ▪ R. N. …

Indicators Of Microbial Activity In Biological Treatment Of Hazardous Wastes, Alexander Mclean Sherrin

Theses

Three methods were used to measure the activity of mixed liquor from the Livingston, N.J. municipal wastewater treatment plant on exposure to phenol. The three methods were, substrate removal rate (SRR), dissolved oxygen uptake rate (DOUR), and the dye reduction rate (DRR). Parameters from each test were compared for reproducibility and ease of determination. The SRR test gave the most reproducible results, while the DOUR test was the least reproducible. Although the reproducibility of the DRR test was close to that of the SRR test, the DRR was more time consuming and required a greater degree of expertise and training. …

Analysis Of Polycyclic Aromatic Hydrocarbon (Pah) In Stack Sample Particulates Formed During Waste Combustion ; Substituent Effects On The Strain Molecules, Ping Chiang Lyu

Theses

PART A: The total thirty samples came from wastes incineration of five industry companies in New Jersey have been examined. The EOM levels showed, especially for the less polar substances, lower than if they were collected at room temperature in the manner of ambient sampling. HPLC analyses of PAH, nitro-PAH and Quinone-PAH have been performed. Brief comparison is made with previous study.

PART B: Ab initio Molecular orbital calculations using the 3-21G basis set provide good approximations to the experimental geometries of substituted strained organic molecules. A series of disubstituted prismanes have been calculated at this level and the effects …

The Sunlight Effect On Trace Pollutants In Wastewater, Alan R. Sheu

Theses

In order to study the sunlight effect on the degradation rate of trace pollutants, ortho-cresol was selected to serve as a model compound in our studies. Solution of ortho-cresol alone, methylene blue alone, and the mixture of ortho-cresol and methylene blue were exposed to sunlight for more than four hours and aliquots analyzed with a spectrophotometer in order to follow the changes in absorption. Rate data were obtained for these three cases as a function of pH.

The results indicate that methylene blue does catalyze the degradation of ortho-cresol in the presence of sunlight with lower pH's affording higher reaction …

Effect Of Phosphate On The Kinetics And Specificity Of Glycation Of Protein, Nancy G. Watkins, Carolyn I. Neglia-Fisher, Daniel G. Dyer, Suzanne R. Thorpe, John W. Baynes

Faculty Publications

The glycation (nonenzymatic glycosylation) of several proteins was studied in various buffiner os rder to assess the effects of buffering ions on the kinetics and specificity of glycation of protein. Incubation of RNase with glucose in phosphate buffer resulted in inactivation of the enzyme because of preferential modification of lysine residues ino r near the activsei te. In contrast, in the cationic buffers, 3-(N-morpholino)propanesulfonic acid and 3-(N-tris(hydroxymethyl)rnethylamino)- 2-hydroxypropanesulfonica cid, the kineticso f glycation of RNase were decreased 2- to 3-fold, there was a decrease in glycation of active site versus peripheral lysines, and the enzyme was resistant to inactivation by …

Recent Improvements Of Water Quality And Biological Indicators In The North-Eastern Tampa Bay, City Of Tampa Bay Department Of Sanitary Sewers

Reports

Simple analysis of our data clearly indicate that water quality conditions in north-eastern Tampa Bay has improved during our study. Further, there are no indications that this improvement has yet climaxed.

Oil Spill Liability And Compensation: A Review Of The Existing Mechanisms And A Look At The Future, Gary A. Reiter

Marine Affairs Theses and Major Papers

This study provides an examination of the existing United States Federal laws and international regimes regarding oil spill liability and compensation, and the manner in which they have been implemented by regulation and policy. The presentation concludes with discussion of and arguments concerning various proposed Federal comprehensive liability and compensation legislation. Emphasis is placed on the unsuccessful legislative proposals of the 99th Congress and the effects that similar legislation, if passed by the 100th congress, may have on current response policies and Federal and state governments. In particular, the effects of the proposed legislation on state's sovereignty and response operations …

Petrology Of The Middle Cambrian Langston And Ute Formations In Southeastern Idaho, Daniel T. Rogers

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Middle Cambrian Langston and Ute formations were studied in the northern portion of the Bear River Range and the south-central part of the Portneuf Range in southeastern Idaho.

The rocks of the Langston and Ute formations were divided into 17 different rock types. The 17 rock types were formed within four recognizable lithofacies: I) Shoal - or Coastal-Peritidal Carbonate Complex; 2) Agitated Shoal; 3) Inner Marine Shelf; and 4) Outer Marine Shelf. Clastic sediments belonging to the Spence Shale Member of the Langston Formation (outer marine shelf) were deposited over the carbonate complex. A transgressive sequence marks the base …

The Aminolysis Of N-Hydroxysuccinimide Esters. A Structure-Reactivity Study, Gary W. Cline, Samir B. Hanna

Chemistry Faculty Research & Creative Works

Twelve amines, which vary substantially in basicity and in steric environment around N, have been allowed to compete—in anhydrous dioxane solution—in the aminolysis of the N-hydroxysuccinimide esters of unsubstituted, p-OCH₃, p-N0₂, and 3,5-(N0₂)₂ benzoic acids. The amines, which encompass a basicity range of 6.5 pk units, display a 10000-fold variation in reactivity in their reaction with the p-N0₂ester. for the sterically unhindered amines, a Bronsted-type plot of log k_obsdvs. pK_a has a slope of ~0.7. The data fit a model (Satterthwait, A. C.; Jencks, W. P. J. Am. …

Effects Of Sediment Addition On The Drift Of Aquatic Macroinvertebrates In Nine Mile Creek, Nebraska, Laurence Angle

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

No abstract provided.

Las Vegas Wash And Lake Mead Proposed Water Quality Standards: Revisions And Rationale, State Of Nevada: Division Of Environmental Protection

Publications (WR)

Rationale of review and for proposed changes to the Nevada Pollution Control Regulations (NAC 445.1354, 445.1355, 445.1356, 455.1367, 445.1352, 445.1353, 445.1350, 445.1351) before the State Environmental Commission on June 23 and 24, 1987.

Comparison Of Littoral And Limnetic Zooplankton Communities Of Lake Mead, Patrick Joseph Sollberger

Publications (WR)

Microfaunal communities were studied in littoral (inshore) and limnetic (offshore) areas of the lower basin in Lake Mead to compare species composition and abundance between the two zones. Planktonic forms (zooplankton) dominated inshore and offshore habitats and the occurrence of littoral species was low. Therefore, high similarity in zooplankton species composition was found among all sampling stations. This was perhaps due to two main factors: (i) the physical and chemical environment among the stations were very similar and (ii) the lack of aquatic vegetation in the littoral zone reduced the occurrence of littoral species.

Although species composition did not vary …

Raw Nutrient Data, Leanna Gail

Publications (WR)

Data collected at various stations around Lake Mead. Includes information about substances present in various water samples.

Disturbed Alpine Ecosystems: Seedling Establishment Of Early And Late Seral Dominant Species, Jeanne C. Chambers

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study examined the effects of seedbed and seedling environment on establishment of early and late seral dominant alpine species. Species studied included late seral dominant forbs (Geum rossii, Artemisia scopulorum, and Polemonium viscosum), early seral dominant forbs (Potentilla diversifolia and Sibbaldia procumbens), a late seral dominant grass (Festuca idahoensis), and early seral dominant grasses (Calamagrostis purpurascens and Deschampsia cespitosa). Germination responses of each species to wet vs. dry cold stratification and light vs. dark conditions were investigated. No statistical differences were observed in the seed germination of early and late …

The Annual Meeting Of The Iowa Academy Of Science April 24-25, 1987 [Program, 99th Meeting], Iowa Academy Of Science

Iowa Academy of Science Documents

Program Contents:

Program Summary --- 4
General Session Speakers --- 9
Awards --- 12
Distinguished Fellow --- 12
Distinguished Iowa Scientist --- 13
Distinguished Service --- 14
Symposia Programs --- 15
Workshops/Discussions --- 20
Meetings --- 23
Tours/Demonstrations/Field Trips --- 24
Video Film Preview --- 25
Poster Papers --- 26
Campus Map --- Centerfold
Section Programs --- 29
Agricultural Sciences --- 30
Anthropology --- 32
Biotechnology --- 33
Botany --- 36
Chemical Education --- 41
Chemistry, Inorganic --- 42
Chemistry, Organic --- 45
Conservation --- 46
Elementary Science --- 47
Engineering --- 48
Geology --- 52
Linguistics --- 55
Nursing …

Program Abstracts, 99th Session, Iowa Academy Of Science, April 24-25, 1987, Iowa Academy Of Science

Iowa Academy of Science Documents

Presentation abstracts from the annual meeting of the Iowa Academy of Science

Importance Of Attractant Qualities For Improving A New Coyote Delivery System, Steven M. Ebbert, Daniel B. Fagre

Great Plains Wildlife Damage Control Workshop Proceedings

Changes in effectiveness and nontarget species selectivity of a new system for delivering ingestible substances to coyotes (Canis latrans) were examined by systematically varying odor type and quantity used to attract coyotes to the device. The new delivery system's efficacy was comparable to the M-44 in our tests in south Texas. A synthetic lure improved the effectiveness of the delivery system when applied in amounts of 0.10 cc or 0.50 cc. Varying odor type did not increase the incidence of desirable coyote behavior, such as biting, but did increase rates of visitation.

Control Of Ecosystem Processes By Prairie Dogs And Other Grassland Herbivores, James K. Detling, April D. Whicker

Great Plains Wildlife Damage Control Workshop Proceedings

Black-tailed prairie dogs in the mixed-grass prairie at Wind Cave National Park, South Dakota, create habitat patches characterized by altered species composition, lower standing crops of plants, but higher forage quality. Native wildlife species such as bison, pronghorn, and elk preferentially feed on these prairie dog colonies and likely derive nutritional benefits from doing so.

Overwater Nesting By Ducks: A Review And Management Implications, Stephen H. Bouffard, David E. Sharp, Carol C. Evans

Great Plains Wildlife Damage Control Workshop Proceedings

Nest success of overwater duck nests is generally higher than nests in upland sites. A review of the literature indicated that the major factors limiting success of overwater nests were fluctuating water levels, nest parasitism, predation, and human disturbance. Regional patterns of the occurrence of these factors could not be discerned. General management guidelines for improved recruitment and reduced nesting female mortality are suggested.

A Statistical Model Of Expansion In A Colony Of Black-Tailed Prairie Dogs, R. P. Cincotta, D. W. Uresk, R. M. Hansen

Great Plains Wildlife Damage Control Workshop Proceedings

To predict prairie dog establishment in areas adjacent to a colony we sampled: (1) VISIBILITY through the vegetation using a target, (2) POPULATION DENSITY at the colony edge, (3) DISTANCE from the edge to the potential site of settlement, and (4) % FORB COVER. Step-wise regression analysis indicated that establishment of prairie dogs in adjacent prairie was most likely to occur when an area was near a densely populated colony edge with high visibility through the vegetation.

Policy And Goals Of The U.S. Fish And Wildlife Service, Harold A. Doty

Great Plains Wildlife Damage Control Workshop Proceedings

A recent memo out of our regional office says that we shall refer to this subject as seasonal predator management. You know it covers a lot of other terms; we used to call it predator control and so on. But going back to the origins of predator management in this country, we generally think of protecting domestic crops, be it trees or grains or sheep or cattle.

If you turn in another direction and look towards Europe, you can see many centuries of involvement in use of the land. There game is a product of the land and is owned …

Historical And Present Status Of The Black-Footed Ferret, Dean E. Biggins, Max H. Schroeder

Great Plains Wildlife Damage Control Workshop Proceedings

The black-footed ferret (Mustela nigripes) was once widely distributed in the Great Plains and intermountain valleys of North America, its range overlapping the combined ranges of several species of prairie dogs (Cynomys spp.). Most life history information has been obtained from studies of ferrets in southwestern South Dakota (1964-1974) and studies near Meeteetse, Wyoming (1981-present). The ferret's nearly complete dependence on prairie dogs was documented in both study areas. The recent collapse of the Meeteetse population of ferrets due to an outbreak of canine distemper underscores the threat posed by this disease, but reductions of prairie dogs …

Rodent Damage To Various Annual And Perennial Crops Of India And Its Management, Ranjan Advani

Great Plains Wildlife Damage Control Workshop Proceedings

The results of about 12 years' study deals with rodent damage to several annual and perennial crops of India including cereal, vegetable, fruit, plantation and other cash crops. The rodent species composition in order of predominance infesting different crops and cropping patterns percent damages and cost effectiveness of rodent control operations in each crop and status of rodent management by predators are analysed.

Radiosensitivity Parameters For Neoplastic Transformations In C3h10t1/2 Cells, M. P. R. Waligorski, G. L. Sinclair, Robert Katz

Robert Katz Publications

We have evaluated radiosensitivity parameters for cellular transformation from published experimental data on neoplastic transformations induced in C3H10T1/2 cells by BEVALAC ions. The measured RBE values are well reproduced by a track theory calculation using sets of m-target parameters with either m = 2 or m = 3, suggesting a quadratic or cubic extrapolation to low doses of γ rays. Using track theory one is thus able to predict transformation frequencies in those cells after an arbitrary radiation field, under known or assumed conditions of exposure, in a manner shown earlier for cellular survival. Extension of these calculations to interpret …

Cougar Predation On Livestock In New Mexico, January 1983 Through June 1984, Gary A. Littauer, Ronald J. White

Great Plains Wildlife Damage Control Workshop Proceedings

A telephone survey was conducted in which the objective was to obtain information from the entire population of livestock producers in New Mexico who had losses to cougars (Felis concolor) in 1983 and the first six months of 1984. A total of 103 ranchers reported losses in 1983 and 60 reported losses in the first six months of 1984. Verified (by examination of kills) losses of sheep and lambs to cougars totaled 1,202 in 1983 and 525 in the first half of 1984. Verified losses of cattle and calves totaled 230 in 1983 and 102 in the first half of …

Efficacy Of Aluminum Phosphide For Black-Tailed Prairie Dog And Yellow-Faced Pocket Gopher Control, P. Rodger Moline, Stephen Demarais

Great Plains Wildlife Damage Control Workshop Proceedings

The efficacy of aluminum phosphide was tested on a total of 300 active black-tailed prairie dog (Cynomys ludovicianus) mounds and 68 active yellow-faced pocket gopher (Pappogeomys castanops) tunnels during June-August, 1986 on the southern Great Plains in Lubbock County, Texas. Efficacy of aluminum phosphide was higher than controls (P < 0.001) for both species. Efficacy was higher for black-tailed prairie dogs (94.7 - 96.0%) than for pocket gophers (61.5 - 85.7%). Soil porosity and moisture appeared to influence efficacy for yellow—faced pocket gophers.

Demography And Population Dynamics Of Prairie Dogs, John L. Hoogland, Diane Kay Angell, James G. Daley, Matthew C. Radcliffe

Great Plains Wildlife Damage Control Workshop Proceedings

For the last 14 years, we have been studying the sociobiology, demography, and population dynamics of blacktailed prairie dogs (Cynomys ludovicianus) in Wind Cave National Park, South Dakota. Our study colony covers 6.6 hectares (16 acres) and has not expanded during the period of research; in late spring of each year the colony contains a mean ± SD of 133 ± 29 adults and yearlings and 81 ± 33 juveniles. We have discovered four surprising aspects of the demography and populations dynamics of prairie dogs. (1) Mortality during the first year is approximately 50% for both sexes. Those males that …