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Drosophila Melanogaster Starvation Resistance: A Quantitative Genetic And Physiological Investigation In Relationship To Life History Traits, Mei-Hui Wang

School of Biological Sciences: Dissertations, Theses, and Student Research

Starvation resistance is an important trait for insect survival. The studies presented in this dissertation investigated starvation resistance using Drosophila melanogaster in terms of genetic correlations, physiological mechanisms and evolutionary trajectory.
/="/">
/="/"> Whether increase of starvation resistance can also extend lifespan is a controversial issue in D. melanogaster. Quantitative trait locus (QTL) mapping can provide good evidence concerning this controversial problem. A QTL analysis was conducted to test the correlation between starvation resistance and longevity using a set of recombination inbred lines (RILs) from a natural population of D. melanogaster. We found the QTL effects were consistent for …

Nebraska Promotes Sorghum And Pearl Millet Food Processing In East Africa, Intsormil

INTSORMIL Impacts and Bulletins

Sorghum and millet are ideal crops for many parts of Africa. However, sorghum and millet’s use as food sources for large urban populations in West Africa is hampered by 1) lack of infrastructure for conveying and demonstrating the food value of sorghum and millet to small business investors, 2) limitations on the supply of high quality grains to processors, 3) lack of small processors, 4) lack of educational resources related to small business development, 5) lack of product development expertise, and 6) lack of knowledge of evidence supporting nutritional claims associated with sorghum and millet consumption.

The Department of Food …

Center For Grassland Studies Newsletter, Winter 2007, Volume 13, No. 1

Center for Grassland Studies: Newsletters

Contents

• Restoration of Salt Cedar Infestations

• From the Director

• Patch-burn Grazing: Benefits for Both Wildlife Habitat and Livestock Performance by Chris Helzer

• CGS Associates

• Soil Physical Characteristics of Aging Golf Greens by Roch Gaussoin

• Jim Gerrish to Speak at 2007 Nebraska Grazing Conference

Department Of Biological Systems Engineering Newsletter, Volume 2, Issue 3, December 2007

BSE Department Magazine

Contents:
New Tractor Test Track Dedication
From the Department Head
Awards
Meet the Faculty
Alumni News
Student News
Summer Graduations
Quarter-scale Tractor Competition
ASABE Student Branch
ASABE International Preprofessional Council
Distinguished Fellowship Awards
John and Louise Skala Fellowships
Researching Plant Sterols
Milton E. Mohr Fellowship in Agriculture
Scholarships and Ice Cream
100 Years As a University of Nebraska Department
Alumnus Profile
Career opportunities in food engineering
Congratulations
Comings and Goings

Western Gray Whales Off Sakhalin Island, Russia: A Joint Russia-U.S. Scientific Investigation July-September 2007, David W. Weller, Amanda L. Bradford, Aimée R. Lang, Hyun Woo Kim, Maxim Sidorenko, Grigory A. Tsidulko, Alexander M. Burdin, Robert L. Brownell Jr.

United States Department of Commerce: Staff Publications

A collaborative Russia-U.S. research program on western gray whales (Eschrichtius robustus) summering off northeastern Sakhalin Island, Russia, has been ongoing since 1995 and has produced important new information on the present day conservation status of this critically endangered population. This interim report reviews preliminary findings from 2007 research activities and combines such with data from previous years, in some cases ranging back to 1994. Photo-identification research conducted off Sakhalin Island in 2007 resulted in the identification of 83 whales, including nine calves and two previously unidentified non-calves. When combined with data from 1994-2006, a catalog of 169 photo-identified …

Ard News December 2007

Agricultural Research Division: News and Annual Reports

Contents:

Comments from the Dean
William G. Whitmore Student Travel Endowment
David H. and Annie E. Larrick Fund, 2008
Undergraduate Honors Research Program
Mussehl Endowment
New or Revised Projects September and October 2007
Proposals Submitted for Federal Grants September and October 2007
Grants and Contracts Received for September and October 2007

Extended Visions, November/December 2007

Extended Visions Newsletter (ARDC)

Contents:
ARDC Director's Comments
ARDC FEATURE UNIT - Foundation Seed Division
About the People
About the Research
Introducing Husker Genetics
How a University of Nebraska HUSKER GENETICS Foundation Seed Variety Goes from the Lab to the Farmer
Annual Festival Teaches Youth About Ag
Bergman Recognized at Retirement Reception
Dec. 6 Workshop to Focus on Alternative Energy for Home, Farm, and Acreages
December Programs... Ethanol By-Product Use for Cow/Calf Producers and Farmer Feeders
How the Field Days Stack Up
MEAD MAGNET Update - Mead High School Agriculture Student Works at the Swine Unit
Nebraska Soybean Day and Machinery Expo

The Leading Object: December 2007

Leading Object

Content:
Perspectives: John C. Owens
‘Know how, Know now’ Seeks to Educate about Value of Extension
Extension Guardianship Program Nationally Recognized
Alumnus Gets Degree 58 Years After Starting School
Dairy Store Busy Preparing Cheese and Gift Boxes
Natural Resources, Plant Industries Halls Renamed
Dinsdale Award To Go to Three Assistant Professors
Hart, Baxendale Receive Awards

Occurrence And Biological Effect Of Exogenous Steroids In The Elkhorn River, Nebraska, Usa, Alan S. Kolok, Daniel D. Snow, Satomi Kohno, Marlo K. Sellin, Louis J. Guillette Jr.

Nebraska Water Center: Faculty Publications

Recent studies of surface waters in North America, Japan, and Europe have reported the presence of steroidogenic agents as contaminants. The current study has three objectives: 1) to determine if steroidogenic compounds are present in the Elkhorn River, 2) to determine if sediments collected from the Elkhorn River can act as a source of steroidogenic compounds to aquatic organisms, and 3) to determine if site-specific biological effects are apparent in the hepatic gene expression of fathead minnows. Evidence was obtained using three approaches: 1) deployment of polar organic chemical integrative samplers (POCIS), 2) deployment of caged fathead minnows, and 3) …

Livestock Production System Management Responses To Thermal Challenges, J. A. Nienabar, G. L. Hahn

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

The adaptive capabilities of animals and livestock production systems have been emphasized in this report. Biometeorology has a key role in rational management to meet the challenges of thermal environments. While the focus is primarily on cattle in warm or hot climates, the importance of dynamic animal responses to environmental challenges applies to all species and climates. Methods used to mitigate environmental challenges focus on heat loss/heat production balance. Under cold stress, reduction of heat loss is the key. Under heat stress, reduction of heat load or increasing heat loss are the primary management tools, although heat-tolerant animals are also …

Myricetin Inhibits Escherichia Coli Dnab Helicase But Not Primase, Mark A. Griep, Sheldon Blood, Marilynn A. Larson, Scott A. Koepsell, Steven H. Hinrichs

Mark A. Griep Publications

Primase and DnaB helicase play central roles during DNA replication initiation and elongation. Both enzymes are drug targets because they are essential, persistent among bacterial genomes, and have different sequences than their eukaryotic equivalents. Myricetin is a ubiquitous natural product in plants that is known to inhibit a variety of DNA polymerases, RNA polymerases, reverse transcriptases, and telomerases in addition being able to inhibit kinases and helicases. We have shown that myricetin inhibits Escherichia coli DnaB helicase according to a mechanism dominated by noncompetitive behavior with a K_i of 10.0 ± 0.5 μM. At physiological ATP concentration, myricetin inhibits …

Population-Based Fish Consumption Survey And Probabilistic Methylmercury Risk Assessment, John J. Johnston, Jamie L. Snow

United States Department of Agriculture Wildlife Services: Staff Publications

A fish consumption survey was developed and administered by telephone to 820 Wyoming fishing license holders. Survey respondents provided the frequency, species, and quantity of Wyoming-caught and store-bought fish consumed for license holder and household members. Deterministic and probabilistic methylmercury exposure distributions were estimated by multiplying fish consumption by species-specific mercury concentrations for each household member. Risk assessments were conducted for children, women of childbearing age, and the rest of the population by comparing methylmercury exposure distributions to levels of concern. The results indicate that probabilistic risk assessment likely provides a more realistic view of the risk to the study …

Corn Stalk Grazing: A Matter Of Economics, Matthew Stockton, Roger K. Wilson, Leslie Aaron Stalker

Cornhusker Economics

The United States Department of Agriculture’s January 1, 2007 “Cattle Inventory” report indicated that there were 1,940,000 beef cows that have calved in Nebraska. In another USDA report titled “Crops Planted, Harvested, Yield, Production, Price (MYA), Value of Production” it was estimated that there will be 9,000,000 acres of corn harvested in 2007. These numbers indicate the potential opportunity to graze cattle on corn stalk residue in Nebraska is huge. With corn harvest nearing completion and weaning time for many producers happening this month, farmers and ranchers are likely to be negotiating the terms of agreements to graze these corn …

Graduate Connections- November 2007

Graduate Connections: A Newsletter for UNL Graduate Students

In This Issue:

Click on links to navigate the newsletter

Navigating Graduate School........... 1

Staying On Track

We <3 Doctoral Forms

Essential Connections...................... 3

Academic Integrity Quiz

Graduate Studies Web Site

Professional Development............... 5

Letters of Recommendation

CV Formatting Tips

Preparing Future Faculty Program

Teaching Tip: ..................................... 5

Assessing Teaching Innovations

Interactions........................................10

Fellowship Winners

Grad Student Association News

Funding Opportunities.....................11

Announcements................................13

Graduate Studies Bulletin Online

Applications for 08-09 Fellowships

Conversation Partners Program

Calendar.............................................14

Degree Deadlines

Readers’ Corner................................14

How to Write a Lot

Fluoxetine, Smoking, And History Of Major Depression: A Randomized Controlled Trial, Bonnie Spring, Neal Doran, Sherry Pagoto, Dennis E. Mcchargue, Jessica Werth Cook, Katherine Bailey, John Crayton, Donald Hedecker

Department of Psychology: Faculty Publications

The study was a randomized placebo-controlled trial testing whether fluoxetine selectively enhances cessation for smokers with a history of depression. Euthymic smokers with (H+, n = 109) or without (H-, n = 138) a history of major depression received 60 mg fluoxetine or placebo plus group behavioral quit-smoking treatment for 12 weeks. Fluoxetine initially enhanced cessation for H+ smokers (p = .02) but subsequently impaired cessation regardless of depressive history. Six months after quit date, fluoxetine-treated participants were 3.3 times more likely to be smoking (p = .02). Further research is warranted to determine why high-dose fluoxetine produces …

Nebline, Nov./Dec. 2007

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Internet is Popular Way to Access Extension
When it Comes to Being Wired, Youth are Leading the Way
Storage Methods to Reduce Loss of Hay Quality
Grain Stubble Rental Rates
Organic Production
Winter Protection for Roses
Make a Holiday Wreath
Winter Gardening Activities for Kids of All Ages
Turkey Tips
Cheesy Turkey Lasagna Recipe
Mediterranean Diet Offers Healthy Benefits
FREE Seminar, “Making Many Meals Using a Few Ingredients”
Mediterranean Soup
President’s Notes — Alice’s Analysis
Household Hints: Caring for Fleece
The Holidays When There are No Close Family Ties
FCE News & Events
Holiday Safety Tips
Holiday Gifts Needed for …

Biofuel Feedstocks: The Risk Of Future Invasions, Joseph M. Ditomaso, Jacob N. Barney, Alison M. Fox

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

In an effort to decrease greenhouse gas emissions, expand domestic energy production, and maintain economic growth, public and private investments are being used to pursue dedicated feedstock crops for biofuel production. Unlike food crops grown for grain-based ethanol (e.g., corn), which require high inputs of fertilizers and pesticides and typically are grown on prime agricultural land, proposed lignocellulose-based energy crops (e.g., switchgrass) typically have a neutral or negative carbon budget, require relatively few economic or environmental inputs, and can be cultivated on marginal, lower-productivity land. Thus, a rapidly growing industry related to crop selection, cultivar improvement, and conversion technologies is …

Convergence Of Agriculture And Energy: Ii. Producing Cellulosic Biomass For Biofuels, Steven L. Fales, J. Richard Hess, Wallace Wilhelm, Don Erbach, William D. Provine, Kenneth P. Vogel, Todd A. Peterson, Edward C. A. Runge

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

Global energy demand is increasing as known global petroleum supplies are decreas¬ing. Calls to supplement or replace the current fossil-based energy system with new, envi¬ronmentally and economically sustainable strategies continue to increase, especially in light of more expensive traditional energy sources. Various governmental agencies and working groups have set aggressive targets and timelines for decreasing fossil fuel consumption by substituting bio-based energy (Bush 2007; Foust et al. 2007; Perlack et al. 2005; Smith et al. 2004). The alignment and continuity of these goals is illustrated in Figure 1.
Current biofuel production in the United States relies primarily on corn grain …

K12-Biotinylated Histone H4 Marks Heterochromatin In Human Lymphoblastoma Cells, Gabriela Camporeale, Anna M. Oommen, Jacob B. Griffin, Gautam Sarath, Janos Zempleni

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

Covalent modifications of histones play crucial roles in chromatin structure and genomic stability. Recently, we reported a novel modification of histones: biotinylation of lysine residues. Here we provide evidence that K12-biotinylated histone H4 (K12Bio H4) maps specifically to both heterochromatin (alpha satellite repeats in pericentromeric regions) and transcriptionally repressed chromatin (γ-G globin and interleukin-2) in human lymphoblastoma cells. The abundance of K12Bio H4 in these regions was similar to that of K9-dimethylated histone H3, a known marker for heterochromatin. Likewise, K8-biotinylated histone H4 (K8Bio H4) mapped to heterochromatin, but the relative enrichment was smaller compared with K12Bio H4. Stimulation of …

Engineering, Nutrient Removal, And Feedstock Conversion Evaluations Of Four Corn Stover Harvest Scenarios, Reed L. Hoskinson, Douglas L. Karlen, Stuart J. Birrell, Corey W. Radtke, Wally Wilhelm

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

Crop residue has been identified as a near-term source of biomass for renewable fuel, heat, power, chemicals and other bio-materials. A prototype one-pass harvest system was used to collect residue samples from a corn (Zea mays L.) field near Ames, IA. Four harvest scenarios (low cut, high-cut top, high-cut bottom, and normal cut) were evaluated and are expressed as collected stover harvest indices (CSHI). High-cut top and high-cut bottom samples were obtained from the same plot in separate operations. Chemical composition, dilute acid pretreatment response, ethanol conversion yield and efficiency, and thermochemical conversion for each scenario were determined. Mean …

Fish & Wildlife News: Summer/Fall 2007

Fish and Wildlife News

Contents:
Director’s Corner / 1
News Briefs / 3
Service Spotlight / 8
Back to Nature / 8
Path to Discovery / 12
A Prescription for Healthy Kids / 14
River Explorers / 16
Linking Girls to the Land / 18
Senses in the Desert / 22
Science / 24
Around the Service / 28
In Their Own Words / 42
Our People / 45
Transitions / 45
Honors / 47
In Memoriam / 49

Does Interference Competition With Wolves Limit The Distribution And Abundance Of Coyotes?, Kim Murray Berger, Eric M. Gese

United States Department of Agriculture Wildlife Services: Staff Publications

1. Interference competition with wolves Canis lupus is hypothesized to limit the distribution and abundance of coyotes Canis latrans, and the extirpation of wolves is often invoked to explain the expansion in coyote range throughout much of North America.

2. We used spatial, seasonal and temporal heterogeneity in wolf distribution and abundance to test the hypothesis that interference competition with wolves limits the distribution and abundance of coyotes. From August 2001 to August 2004, we gathered data on cause-specific mortality and survival rates of coyotes captured at wolf-free and wolf-abundant sites in Grand Teton National Park (GTNP), Wyoming, USA, …

Ard News October 2007

Agricultural Research Division: News and Annual Reports

Contents:

Comments from the Associate Dean
Glimpses at ARD Research
New or Revised Projects July and August 2007
Proposals Submitted for Federal Grants July and August 2007
Grants and Contracts Received for July and August 2007

Food Science & Technology Alumni News, Fall 2007

Department of Food Science and Technology: Public Access Records

CONTENTS:
A message from the Department Head . . .
Graduates of the B.S. Program
Graduates of the M.S. Program
New M.S. Graduate Students
New Ph.D. Graduate Students
Graduate Follow-up
Food Science Club
Sophomore Food Science Major Wins Candy Scholarship
New Faces
Departures
Visiting Faculty
Let us Know how you’re doing!
Hyperspectral Imaging to Predict Beef Tenderness
Food Technology for Companion Animals: Research Grants
2007: The 90th Anniversary of the Dairy Store
Products Available at the Dairy Store
IICA Visits UNL
Fortenberry Holds Educational Conference on Local Foods
Laboratory Services
Meet the Faculty
Conferences and Workshops

Journal Of The National Collegiate Honors Council -- Volume 8, No. 2 -- Complete Issue

Journal of the National Collegiate Honors Council Online Archive

CONTENTS

Call for Papers
Submission Guidelines
Dedication to Larry R. Andrews
Editor’s Introduction -- Ada Long

FORUM ON “MANAGING GROWTH IN HONORS”
Nothing Fails Like Success: Managing Growth in a Highly Developed Honors Program -- Peter C. Sederberg
Robert Burns, Peter Sederberg, and Higher Education Administration -- Ira Cohen
Important Issues for Growing an Honors Program -- Nick Flynn
Growth = Bucks(?)-- Gregory W. Lanier
The (Un)familiar Library: Managing the Transition for a Growing Number of Honors College Students -- Jean E. McLaughlin
Balancing Low Growth with High Success -- Robert H. Hogner
Nothing Succeeds Like Failure: Managing Loss in …

"Whores And Other Feminists" Recovering Deadwood's Unlikely Feminisms, Anne Helen Petersen

Great Plains Quarterly (through 2013)

The very first vision of the female form in Deadwood is one of ultimate despair: the woman sits alone in the corner of a room, hysterically weeping, her face swollen and bruised with beating. A man sits across the room, a bullet through the temple, barely alive. He was beating her; she responded with a Derringer shot to the head. Moments later, the woman is on the ground in her pimp's office, his boot square on her neck. She writhes beneath him, nearly strangling to death before whispering through bloodied lips: "I'll be good." Meanwhile, the other prominent female character …

Estimates Of Genetic Parameters For Growth Traits In Kermani Sheep, M. R. Bahreini Behzadi, F. E. Shahroudi, L. Dale Van Vleck

Department of Animal Science: Faculty Publications

Birth weight (BW), weaning weight (WW), 6-month weight (W6), 9-month weight (W9) and yearling weight (YW) of Kermani lambs were used to estimate genetic parameters. The data were collected from Shahrbabak Sheep Breeding Research Station in Iran during the period of 1993–1998. The fixed effects in the model were lambing year, sex, type of birth and age of dam. Number of days between birth date and the date of obtaining measurement of each record was used as a covariate. Estimates of (co)variance components and genetic parameters were obtained by restricted maximum likelihood, using single and two-trait animal models. Based on …

Extended Visions, September/October 2007

Extended Visions Newsletter (ARDC)

Contents:
ARDC Director's Comments
ARDC FEATURE UNIT - Beef Feedlot
About the People
Can a Flavor Enhancing Oil Improve Finishing Performance?
Comparison of a Long Yearling System and Calf-fed Performance and Economics
Effect of Feeding a Byproduct Combination at Two Levels or Byproduct Alone
Effect of Distillers Grains Composition and Level on Steers Consuming High Quality Forage
Feedlot Research Important to Beef Industry
Performance Profile and Carcass Characteristics of Steers Fed Optaflexx
Study Examines BRD Control and Receiving Systems
Summary Analysis of Grazing Yearling Response to Distillers Grains
Barnhill Recognized for Service at ARDC
Calendar of Events
Have a Happy, …

Canadian Cooperative Wildlife Health Centre: Wildlife Disease Investigation Manual

Canadian Cooperative Wildlife Health Centre: Newsletters and Publications

This manual is intended as a reference for people investigating wildlife mortality events or illness. Its primary objective is to ensure that appropriate samples are collected in the field, and that these reach a diagnostic laboratory in suitable condition for detailed examination. This will ensure an optimal chance to determine the cause and nature of the disease and to assess significance.

It is impossible to provide detailed guidelines that will be appropriate for all circumstances; our intent is to provide general directions that can be modified to fit the circumstances. Whenever possible, the laboratory that will be examining the specimens …

Nebline, October 2007

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

How Healthy is Your Home?
Soybean Cyst Nematode Spreading in Nebraska
Maintain Grain Quality in Storage
Winterize Your Underground Sprinkler System
Prepare Fireplaces and Woodburning Stoves for Safe Use this Winter
Why Leaves Fall
Choose Decay Resistant Wood for Buildings, Fenceposts
Storing a Tractor
Drying Gourds
Start Garden Cleanup
Tree Planting and Landscape Improvement Funds Available
Grassland Center Sets Fall Lecture Schedule
President’s Notes — Alice’s Analysis
Household Hints
Control Anger Rather Than Suppress It
FCE News & Events
Respond Effectively to Misbehaving Children by Understanding the Problem
Filing Financial Records Saves Time
How Dish Size, Location Influence the Amount …