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Child Physical Abuse And Neglect, Jody E. Warner-Rogers, David J. Hansen, Debra B. Hecht

Department of Psychology: Faculty Publications

Children ideally develop and learn about their world from the safe and stimulating environment of their home. Therefore, it is quite disturbing when violence occurs within the supposedly protective domains of the home and the parent-child relationship, although such acts have been committed throughout history (Zigler & Hall, 1989). Even though acts of child maltreatment have a long history, the concept that society should be responsible for the protection of children, including identification, reporting, and treatment of both the victims and perpetrators of maltreatment, is a relatively recent development.

This chapter addresses the physical abuse and neglect of children by …

Applications Of Amorphous Track Models In Radiation Biology, Francis Cucinotta, Hooshang Nikjoo, Dudley A. Goodhead

Robert Katz Publications

The average or amorphous track model uses the response of a system to gamma-rays and the radial distribution of dose about an ion’s path to describe survival and other cellular endpoints from proton, heavy ion, and neutron irradiation. This model has been used for over 30 years to successfully fit many radiobiology data sets. We review several extensions of this approach that address objections to the original model, and consider applications of interest in radiobiology and space radiation risk assessment. In the light of present views of important cellular targets, the role of target size as manifested through the relative …

Action Of Retinoids On Embryonic And Early Postnatal Testis Development, Andrea S. Cupp, Jannette M. Dufour, Grace Kim, Michael K. Skinner, Kwan Hee Kim

Department of Animal Science: Faculty Publications

The current study investigates the hypothesis that retinoids have a role in embryonic testis development. The action of retinoids on testis development and the expression of retinoic acid receptors (RARα, RARβ, RARγ) were examined. In embryonic day 13 (E13; plug date 5 E0) testis organ cultures an RAR-selective agonist and alltrans retinoic acid completely inhibited seminiferous cord formation. In contrast, an RARα-selective antagonist had no effect. RT-PCR demonstrated that RARα messenger RNA (mRNA) was expressed at all developmental time points evaluated, which included embryonic day 14 (E14) through postnatal day 30 (P30). Expression of RARβ mRNA was present at E15 …

Chronic Effects Of Atrazine On Tolerance Of A Benthic Diatom, Karen J. Nelson, Kyle D. Hoagland, Blair Siegfried

Department of Entomology: Faculty Publications

The effects of prior chronic exposure to atrazine on responses to subsequent acute exposures were investigated using a common benthic diatom. Clonal, axenic cultures of Craticula cuspidata were established from the Platte River (Nebraska) and obtained from a culture collection (unlikely prior exposure to atrazine). All cultures received a chronic 67-d treatment of 1 μg/L atrazine, and growth was monitored using fluorometric detection of chlorophyll a. Chronic atrazine exposure significantly reduced growth rate only during the first day of treatment (p= 0.0001); no significant effect was detected throughout the remainder of the 67-d period. Following the chronic treatment, …

Cropwatch No. 99-3, April 2, 1999, Lisa Brown Jasa

Crop Watch (1994–2005)

Inside

Field updates/calendar ……………22

Balancing alfalfa soils ……………23

Corn herbicide efficacy tables ……………24

Below normal rainfall ……………27

New herbicides…………… 28

Adult corn rootworm resistance ……………29

The Structure And Properties Of Methylenetetrahydrofolate Reductase From Escherichia Coli Suggest How Folate Ameliorates Human Hyperhomocysteinemia, Brian D. Guenther, Christal A. Sheppard, Pamela Tran, Rima Rozen, Rowena G. Matthews, Martha L. Ludwig

Nebraska College of Law: Faculty Publications

Elevated plasma homocysteine levels are associated with increased risk for cardiovascular disease and neural tube defects in humans. Folate treatment decreases homocysteine levels and dramatically reduces the incidence of neural tube defects. The flavoprotein methylenetetrahydrofolate reductase (MTHFR) is a likely target for these actions of folate. The most common genetic cause of mildly elevated plasma homocysteine in humans is the MTHFR polymorphism A222V (base change C677→T). The X-ray analysis of E. coli MTHFR, reported here, provides a model for the catalytic domain that is shared by all MTHFRs. This domain is a β₈α₈ barrel that binds FAD …

Center For Grassland Studies Newsletter, Spring 1999, Volume 5, No. 2

Center for Grassland Studies: Newsletters

Contents:

Spring Creek Prairie Near Lincoln Provides Outdoor Classroom Other Preserved Virgin Prairies in Southeast Nebraska

Algae Control in Ponds With Barley Bales: On-site Results in Nebraska by Roch Gaussoin, Department of Horticulture, UNL

CGS Offers New Grazing Livestock Systems Major

Grassland Ecology Theme of Fall 1999 CGS Seminar Series

Fair 2000 Symposium Sets Food Animal Research Priorities

Executive Order on Invasive Species

Ard News April 1999

Agricultural Research Division: News and Annual Reports

CONTENTS:

Comments from the Dean
NABC 11 Meeting
GPRA and POW - What Are They and Why Should I Care?
Federal Funding fur Agricultural Research
American Agriculture: A Food, Fiber and Environmental System
Layman Awards
FY 2000 CSREES Budget Recommendations
New or Revised Projects
Grants and Contracts Received February and March, 1999
Proposals Submitted for Federal Grants
Policy Prohibits Use of University Funds for Memberships, Subscriptions
Technology Transfer in Universities

Journal Of Telecommunications In Higher Education

ACUTA Journal

In this Issue

6 The Synergy of Network Convergence and the IP Infrastructure

12 Leveraging the IP Network at the University of Oregon

18 How the Internet Will Change Network Management

26 Voice Over IP: The Stakes Get Higher

30 Abilene: An Advanced Research Network

34 Web-Based Systems on the 21st-Century Campus

46 Bill D. Morris Award: Whitney Johnson

Scwds Briefs: Volume 15, Number 1 (April 1999)

Southeastern Cooperative Wildlife Disease Study: Publications

SCWDS BRIEFS
April 1999
Aflatoxicosis in Louisiana Geese
Aflatoxins
Aspergillus
Prevention of Meningeal Worm Infection
Meningeal worm (Parelaphostrongylus tenuis)
Meningeal worm infection (parelaphostrongylosis)
Meningeal Worms in Cattle
Deer meningeal worm (Parelaphostrongylus tenuis) and clinical disease (parelaphostrongylosis)
Composted Chicken Litter Safer for Wildlife
Histomoniasis (blackhead disease) transmission
Pasteurella multocida
Infectious bursal disease (Gumboro) and Newcastle disease
Hazards of Deer Relocation
Missouri Department of Conservation (MDC)
Capture myopathy
Rodenticide Hazards to Wildlife
Bromadiolone and diphacinone
Anticoagulant compounds
National Wild Turkey Federation (NWTF)
Avian pox and blackhead disease
Annual Conference of the Wildlife Disease
Association (WDA)

Greater Prairie-Chicken Harvest In Kansas: Early Vs. Regular Seasons, Francis E. Durbian, Iii, Elmer J. Finck, Roger D. Applegate

Great Plains Research: A Journal of Natural and Social Sciences (through 2013)

Remnant populations of the greater prairie chicken (Tympanuchus cupido pinnatus) in Kansas are managed to maintain population size while providing recreational hunting potential. Our aim in this study was to evaluate the effect of adding an early hunting season (late September-October) to the regular season (November-late January). We compared the hunting methods used and the harvest of greater prairie chickens during early and regular hunting seasons for 1990-91 and 1991-92. The use of dogs and walkup hunting techniques were emphasized in early season, whereas pass shooting in feeding fields was emphasized in the regular season. During early season, …

Nonagricultural Benefits Of Windbreaks In Kansas, Ted T. Cable

Great Plains Research: A Journal of Natural and Social Sciences (through 2013)

This paper reviews the evidence for nonagricultural benefits of windbreaks in the Great Plains. Windbreaks may provide recreational opportunities, scenic beauty, fuelwood, and wildlife habitat in addition to agricultural benefits. Quantitative studies demonstrate that windbreaks on the Great Plains provides important wildlife habitat for woodland edge species, substantial opportunities for recreation, a potentially important source of fuelwood, and enhanced scenic beauty.

Review Of Ecology And Conservation Of Great Plains Vertebrates Edited By Fritz L. Knopf And Fred B. Samson, Rolf Koford

Great Plains Research: A Journal of Natural and Social Sciences (through 2013)

Focusing on the plight of natural ecosystems in the Great Plains, Fritz Knopf and Fred Samson give prominent coverage to the region's “charismatic megafauna" and provide an excellent overview of the ecology and conservation of most vertebrate taxa. The editors granted their individual authors considerable leeway, resulting in contributions that are authoritative but unintegrated with each other. For example, in the Preface and most of the chapters, the Great Plains includes the tall grass prairie as well as the short and mixed grass prairie traditionally associated with the Great Plains region. In chapters on wetlands and fishes, tall grass prairie …

Review Of Capturing Women: The Manipulation Of Cultural Imagery In Canada's Prairie West By Sarah Carter, Catherine Cavanaugh

Great Plains Quarterly (through 2013)

Capturing Women, an extended essay examining the role of Indian captivity narratives in racializing prairie society, is a welcome addition to prairie history, which has been particularly resistant to gender and race analysis. In this small volume Sarah Carter takes up both of these subjects in the context of nineteenth-century imperialism. Beginning with a close reading of Two Months in the Camp of Big Bear: The Life and Adventures of Theresa Gowanlock and Theresa Delany, she shows how captivity narrative was used to reestablish white male authority in the aftermath of what has become known as the Second …

The Platte River Cooperative Agreement: A Basin-Wide Approach To Endangered Species Issue, Allan Jenkins

Great Plains Research: A Journal of Natural and Social Sciences (through 2013)

This paper reviews current endangered species issues associated with the development of the Platte River and the "Cooperative Agreement for Platte River Research and Other Efforts Relating to Endangered Species Habitats." The Platte River is an important economic resource, providing water essential for irrigation in a highly productive, but semiarid, agricultural region. However, the Middle Platte region of south central Nebraska is also recognized as a critical environmental zone for several endangered species. Thus, Platte River water users are subject to the provisions of the Endangered Species Act. In 1994, the Governors of Nebraska, Colorado and Wyoming agreed to work …

Review Of Cowbirds And Other Brood Parasites By Catherine P. Ortega, Paul Porneluzi

Great Plains Research: A Journal of Natural and Social Sciences (through 2013)

Your attitude toward cowbirds and other brood parasites may be largely influenced by the nature of your experience with them. If your primary contact with brood parasites occurs when they appear with the host species you are watching, studying, or researching, it is easy to side with those who have characterized cowbirds as feathered wretches, social outcasts, arch villains, or pests of the highest order. If the focus of your attention is on cowbirds themselves, however, you may be more likely to view them as highly adapted, fascinating components of the ecosystem. If you are not already in the second …

Review Of The Origins Of Native Americans: Evidence From Anthropological Genetics By Michael H. Crawford, Theodore Schurr

Great Plains Research: A Journal of Natural and Social Sciences (through 2013)

Since the presentation of the tripartite model of Native American languages, genes, and cultures by Joseph H. Greenberg and others (1986), there have been few attempts to synthesize anthropological genetic data from New World populations to evaluate various models of the peopling of the Americas. Although offering no new theoretical paradigm to explain the observed patterns of biological diversity in the New World, The Origins of Native Americans presents a thorough review of the current genetic data from Siberian and Native American populations. Rather than taking an explicitly historical view of these anthropological genetic studies, the book instead examines the …

Review Of Swallow Summer By Charles R. Brown, Paul A. Johnsgard

Great Plains Research: A Journal of Natural and Social Sciences (through 2013)

There are increasingly two types of professional modern biologists. One likes to subdivide and macerate the organism being studied into its smallest possible components, preferably to the size of molecules, and asks questions that are largely chemical in nature. Such biologists work in high tech, air-conditioned labs, get grants large enough to match their egos, and dream of Nobel Prizes. They go to work in nice clothes and even nicer cars, rarely leaving the city limits. The other, increasingly rare, type likes to study an organism in the context of its broadest environmental components, preferably the size of its ecosystem, …

The Probe, Issue 199 – April 1999

The Probe: Newsletter of the National Animal Damage Control Association

American White Pelicans: The latest avian problem for southeastern catfish producers -- D. Tommy King, USDAIAPHISIWS, National Wildlife Research Center, Mississippi Research Station, Mississippi State University, MS 39762
In Memoriam: William D. Fitzwater (1917-1999)
In Memoriam: Jack H. Berryman
Booklet Review: "Managing Canada Geese in Urban Environments: A Technical Guide" by Arthur E. Smith, Scott R. Craven and Paul D. Curtis (1999). Jack Berryman Institute Publication 16, and Cornell University Cooperative Extension, Ithaca, NY. 42 pages. $10.00 (postpaid)
Video Review: "Suburban Goose Management: Searching for Balance." Produced by the Educational Television Center Media and Technology Services, Cornell University. (1998) VHS. …

Implications Of Cloning For Breed Improvement Strategies: Are Traditional Methods Of Animal Improvement Obsolete?, L. Dale Van Vleck

Department of Animal Science: Faculty Publications

Can the optimum animal be defined? Will that definition change over time, by location, by market demand? First, assume what may be impossible, that the perfect animal can be defined or that only a limited number of definitions of “perfect” are needed. Then, can the “perfect” animal to match a definition be found? Suppose such an animal is found. Then the question to be answered before trying to clone as a method of genetic improvement becomes “Is the animal perfect because of phenotype or genotype?” In other words, the P = G + E problem exists, which requires traditional methods …

Interferon Regulatory Factor 2 Represses The Epstein-Barr Virus BamHi Q Latency Promoter In Type Iii Latency, Luwen Zhang, Joseph S. Pagano

Nebraska Center for Virology: Faculty Publications

Epstein-Barr virus (EBV) nuclear antigen 1 (EBNA-1) is the essential protein for maintenance of the EBV episome and establishment of latency. The BamHI Q promoter (Qp) is used for the transcription of EBNA-1 mRNA in type I and type II latency, which are EBV infection states exemplified by Burkitt’s lymphoma and nasopharyngeal carcinoma. However, Qp is inactive in type III latency, and other promoters (the BamHI C promoter and/or the BamHI W promoter) are used for EBNA-1. The involvement of interferon regulatory factors (IRFs) in the regulation of Qp is suggested by the presence of an essential interferon-stimulated response element …

Baseline Susceptibility Of European Corn Borer (Lepidoptera: Crambidae) To Bacillus Thuringiensis Toxins, Paula C. R. G. Macron, Linda J. Young, Kevin L. Steffey, Blair Siegfried

Department of Entomology: Faculty Publications

Susceptibility to CrylAb and CrylAc toxins from Bacillus thuringiensis was determined for 11 populations of neonate European corn borer, Ostrinia nubilalis (Hiibner), from the United States and 1 from northern Italy. Corn borer larvae were exposed to artificial diet treated with increasing B. thuringiensis concentrations, and mortality and growth inhibition were evaluated after 7 d. The range of variation in B. thuringiensis susceptibility indicated by growth inhibition was very similar to that indicated by mortality. Although interpopulation variation in susceptibility to both proteins was observed, the magnitude of the differences was small (54-fold) and comparable to the variability observed among …

Real-Time Monitoring Of Escherichia Coli O157:H7 Adherence To Beef Carcass Surface Tissues With A Bioluminescent Reporter, Gregory R. Siragusa, Kevin Nawotka, Stanley D. Spilman, Pamela R. Contag, Christopher H. Contag

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

A method for studying bacteria that are attached to carcass surfaces would eliminate the need for exogenous sampling and would facilitate understanding the interaction of potential human food-borne pathogens with food animal tissue surfaces. We describe such a method in which we used a bioluminescent reporter strain of Escherichia coli O157:H7 that was constructed by transformation with plasmid pCGLS1, an expression vector that contains a complete bacterial luciferase (lux) operon. Beef carcass surface tissues were inoculated with the bioluminescent strain, and adherent bacteria were visualized in real time by using a sensitive photon-counting camera to obtain in situ …

Tectonic Forcings Of Maastrichtian Ocean-Climate Evolution, Tracy D. Frank, Michael A. Arthur

Department of Earth and Atmospheric Sciences: Faculty Publications

A global compilation of deep-sea isotopic records suggests that Maastrichtian ocean-climate evolution was tectonically driven. During the early Maastrichtian the Atlantic intermediate-deep ocean was isolated from the Pacific, Indian, and Southern Oceans; deep water formed in the high-latitude North Atlantic and North Pacific. At the early/late Maastrichtian boundary a major reorganization of oceanic circulation patterns occurred, resulting in the development of a thermohaline circulation system similar to that of the modem oceans. A combination of isotopic and plate kinematic data suggests that this event was triggered by the final breaching of tectonic sills in the South Atlantic and the initiation …

Microbiology Of The Oil Fly, Helaeomyia Petrolei, Dana R. Kadavy, Bradley A. Plantz, Christopher A. Shaw, Jill Myatt, Tyler A. Kokjohn, Kenneth Nickerson

Papers in Microbiology

Helaeomyia petrolei larvae isolated from the asphalt seeps of Rancho La Brea in Los Angeles, Calif., were examined for microbial gut contents. Standard counts on Luria-Bertani, MacConkey, and blood agar plates indicated ca. 2 x 10⁵ heterotrophic bacteria per larva. The culturable bacteria represented 15 to 20% of the total population as determined by acridine orange staining. The gut itself contained large amounts of the oil, had no observable ceca, and maintained a slightly acidic pH of 6.3 to 6.5. Despite the ingestion of large amounts of potentially toxic asphalt by the larvae, their guts sustained the growth of …

Hydrogen Bonding And Cooperative Effects In Mixed Dimers And Trimers Of Methanol And Trifluoromethanol: An Ab Initio Study, Ruben D. Parra, Xiao Cheng Zeng

Xiao Cheng Zeng Publications

Ab initio calculations are used to provide information on the mixed dimers and cyclic trimers of the methanol-trifluoromethanol system. In order to better understand the systems, the monomers and their corresponding dimers and trimers are also investigated. Molecular structures and harmonic frequencies are obtained at the B3LYP/6-311++G(d,p) level. Interaction energies are calculated with the MP2 and B3LYP methods using the 6-311++G(d,p), 6-311++G(2d,2p), and 6-311++G(3d,2p) basis sets for the dimers and heterodimers. The 6-311++G(d,p) basis set was used to calculate the …

The Feasibility Of Controlling The Brown Treesnake In Small Plots, Gordon H. Rodda, Thomas H. Fritts, Earl W. Campbell Iii

United States Department of Agriculture Wildlife Services: Staff Publications

There is an urgent need to provide snake-free or snake-reduced habitats for the wildlife species on Guam that have declined or disappeared as a result of predation by the Brown Treesnake, Boiga irregularis (Savidge, 1987; Fritts, 1988; Rodda and Fritts, 1992; Rodda et al., this volume, Chap. 2). At present, we know of no practical techniques for reducing or eradicating the snake throughout Guam, a densely populated island of 54,100 ha. Conserving native wildlife and reducing the incidences of snakes boarding ship and aircraft may not require the elimination of snakes from the entire island, however. Elimination of snakes from …

An Overview Of The Biology Of The Brown Treesnake* (Boiga Irregularis), A Costly Introduced Pest On Pacific Islands, Gordon H. Rodda, Thomas H. Fritts, Michael J. Mccoid, Earl W. Campbell Iii

United States Department of Agriculture Wildlife Services: Staff Publications

The 20-30 species of the genus Boiga (Colubridae, Boiginae) range from tropical Africa through southern Asia to Melanesia and Australia (Leviton, 1968). Collectively, they are known as catsnakes, mangrove snakes, or treesnakes (Obst et al., 1988; Greene, 1989). The common name "catsnakes" is sometimes used for snakes in the genus Telescopus as well (Obst et 1, 1988).

Members of the genus Boiga are nocturnal, oviparous, opisthoglyphic, euryphagic, and slender; they have vertical elliptical pupils (thus “cat” snakes) set in large eyes, and short, blunt heads that are noticeably larger than their necks. With one exception they are arboreal or semiarboreal …

Margolisianum Bulbosum N. Gen., N. Sp. (Nematoda: Philometridae) From The Southern Flounder, Paralichthys Lethostigma (Pisces: Bothidae), In Mississippi Sound, Usa, Reginald B. Blaylock, Robin M. Overstreet

Harold W. Manter Laboratory of Parasitology: Faculty Publications

A new species of a philometrid nematode, Margolisianum bulbosum, is described from the subcutaneous tissue in the mouth (larvigerous females), head (males, ovigerous, and larvigerous females), and eye (preovigerous females) of the southern flounder, Paralichthys lethostigma, from Mississippi Sound. It is placed in a new genus diagnosed by the combination of 8 large, paired but separate cephalic papillae; no inner cephalic papillae; an esophagus with a separate, muscular anterior bulb; a prominent mononuclear esophageal gland; and variable, irregularly distributed cuticular bosses in the females, as well as a vestigial rectum, particularly in larvigerous females. Some female specimens exhibit …

Genotypic Expression With Different Ages Of Dams: Iii. Weight Traits Of Sheep, H. Okut, C. M. Bromley, L. Dale Van Vleck, G. D. Snowder

Department of Animal Science: Faculty Publications

Correlations between genetic expression in lambs when dams were young (1 yr), middle-aged (2 and 3 yr), or older (older than 3 yr) were estimated with three-trait analyses for weight traits. Weights at birth ( BWT) and weaning ( WWT) and ADG from birth to weaning were used. Numbers of observations were 7,731, 9,518, 9,512, and 9,201 for Columbia ( COLU) , Polypay ( POLY) , Rambouillet ( RAMB) , and Targhee ( TARG) breeds of sheep, respectively. When averaged, relative estimates for WWT and ADG were similar across breeds. Estimates were variable across breeds. On average, direct heritability was …