Digital Commons Network^™

Size-Dependent Feeding And Reproduction By Boll Weevil (Coleoptera: Curculionidae), S. M. Greenberg, D. W. Spurgeon, Thomas W. Sappington, M. Sétamou

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

The considerable variation in adult size of the boll weevil, Anthonomus grandis grandis Boheman, has been well documented, but the influences of adult size on reproductive rate are not known. We examined the relationship between the size of boll weevils and their feeding and oviposition. Weevils weighed to the nearest milligram were grouped into five categories based on pupal weight:≤5, 6-10, 11-15, 16-20, and>20 mg. Numbers of lifetime punctures produced in flower buds (squares) of cotton, Gossypium hirsutum L., by both sexes of adults tended to increase with pupal weight. Boll weevil females with pupal weights >10 mg produced …

In Vitro Gas Production As A Surrogate Measure Of The Fermentability Of Cellulosic Biomass To Ethanol, P. J. Weimer, B. S. Dien, T. L. Springer, Kenneth P. Vogel

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

Current methods for measuring ethanol yields from lignocellulosic biomass are relatively slow and are not well geared for analyzing large numbers of samples generated by feedstock management and breeding research. The objective of this study was to determine if an in vitro ruminal fermentation assay used in forage quality research was predictive of results obtained using a conventional biomass-to-ethanol conversion assay. In the conventional assay, herbaceous biomass samples were converted to ethanol by Saccharomyces cerevisiae cultures in the presence of cellulase enzymes. Cultures were grown in sealed serum bottles and gas production monitored by measuring increasing head space pressure. Gas …

Approaches To Brown V. Board Of Education: Some Notes On Teaching A Seminal Case, Joel K. Goldstein

All Faculty Scholarship

During the past year, dozens of American law schools commemorated the fiftieth anniversary of Brown v. Board of Education.¹ The attention was appropriate because Brown is one of the Supreme Court’s seminal decisions. By all appearances, the fiftieth anniversary of Brown attracted much more attention than did, say, the 200th anniversary of Marbury v. Madison² in 2003 or the centennial of Lochner v. New York³ this year. Brown’s unique significance resides in part in the fact that it changed America’s constitutional norm regarding race, our most embarrassing and vexing problem. In effectively overturning the doctrine of Plessy …

Make Room For Dying: End Of Life Care In Nursing Homes, Sandra H. Johnson

All Faculty Scholarship

The cornerstone of contemporary nursing home care is a commitment to patient rehabilitation. Improved care is an important and worthwhile goal, but it is a goal that has yet to make room for the dying. A significant proportion of older people will spend their final days in a nursing home. This article calls for a culture shift in nursing home care to promote improved care for not only those who can be rehabilitated but also those who are dying.

This article begins by addressing challenges to achieving this culture that are particular to the nursing home context. It then explains …

Ursinus Magazine, Winter 2005, Wendy Greenberg, Anne Levin Benedict, Katherine Diana, Dan Reimold, Coco Minardi, Jodi Ackerman Frank, Randy Leiser, Christina Burton, Paul Jones

Ursinus Magazine, 1995–Present

The Philip and Muriel Berman Museum of Art calendar • Why I support the Campaign for Ursinus: Interviews with the Chairs • 2005 Watson Fellowship finalists announced • Phone-a-thon news • Harvard professor lauds Ursinus CIE • Scudera play goes to regional festival • Ursinus in the news • New scholarship available at Ursinus • Regional campaign exceeds goals • Science students prove liberal arts colleges generate impressive research • The majors: New programs excite students and put Ursinus with peer colleges • Dance • Environmental Studies • 3-2 engineering program: Dual degree program is a tale of two cities …

Status Of Soil Electrical Conductivity Studies By Central State Researchers, Cinthia K. Johnson, Roger A. Eigenberg, Bryan L. Woodbury, John W. Doran, Brian J. Wienhold, Bahman Eghball

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

Practical tools are needed to identify and advance sustainable management practices to optimize economic return, conserve soil, and minimize negative off-site environmental effects. The objective of this article is to review current research in non-saline soils of the central U.S. to consider bulk soil electrical conductivity (EC_a) as an assessment tool for: (1) tracking N dynamics, (2) identifying management zones, (3) monitoring soil quality trends, and (4) designing and evaluating field-scale experiments. The interpretation and utility of EC_a are highly location and soil specific; soil properties contributing to measured EC_a must be clearly understood. In soils …

Genetic Analysis Of Trichinella Populations By ‘Cold’ Single-Strand Conformation Polymorphism Analysis, Robin B. Gasser, Min Hu, Youssef Abs El-Osta, Dante S. Zarlenga, Edoardo Pozio

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

A non-isotopic single-strand conformation polymorphism (‘cold’ SSCP) technique has been assessed for the analysis of sequence variability in the expansion segment 5 (ES5) of domain IV and the D3 domain of nuclear ribosomal DNA within and/or among isolates and individual muscle (first-stage) larvae representing all currently recognized species/genotypes of Trichinella. Data are consistent with the ability of cold SSCP to identify intra-specific as well as inter-specific variability among Trichinella genotypes. The cold SSCP approach should be applicable to a range of other genetic markers for comparative studies of Trichinella populations globally.

New Species Of Clavicornaltica Scherer (Coleoptera: Chrysomelidae) From Continental Asia, Alexander S. Konstantinov, Catherine N. Duckett

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

Four new species of Clavicornaltica Scherer are described and illustrated, of which two are from China (C. dali new species and C. longsheng new species) and two are from Vietnam (C. tamdao new species and C. vietnamensis new species). The wing and metathorax are described and illustrated for the genus for the first time. A key to the newly described species is presented. Male genitalia of Clavicornaltica australis Konstantinov are illustrated for the first time.

Soil Heat Flux, Thomas J. Sauer, Robert Horton

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

Climatic conditions on the earth’s surface are in part a function of varying physical position (elevation, latitude, and aspect) and the influence of large-scale meteorological forces such as air and ocean currents. The density and architecture of plant canopies in natural systems are directly influenced by these climatic factors. By contrast, for agricultural systems, it is the crop canopies that often influence local microclimate. In both instances, the soil plays an important role in affecting climate near the surface. Properties of the surface soil layer including color, water content, texture, and density affect the partitioning of incident radiation and how …

Stable Isotopes In Obesity Research, Gregory G. Dolnikowski, Julian B. Marsh, Sai Krupa Das, Francine K. Welty

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

Obesity is recognized as a major public health problem. Obesity is a multifactorial disease and is often associated with a wide range of comorbidities including hypertension, non-insulin dependent (Type II) diabetes mellitus, and cardiovascular disease, all of which contribute to morbidity and mortality. This review deals with stable isotope mass spectrometric methods and the application of stable isotopes to metabolic studies of obesity. Body composition and total energy expenditure (TEE) can be measured by mass spectrometry using stable isotope labeled water, and the metabolism of protein, lipid, and carbohydrate can be measured using appropriate labeled tracer molecules.

Colonization Of Wounded Peanut Seeds By Soil Fungi: Selectivity For Species From Aspergillus Section Flavi, Bruce W. Horn

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

Soil is a source of primary inoculum for Aspergillus flavus and A. parasiticus, fungi that produce highly carcinogenic aflatoxins in peanuts. Aflatoxigenic fungi commonly invade peanut seeds during maturation, and the highest concentrations of aflatoxins are found in damaged seeds. A laboratory procedure was developed in which viable peanut seeds were wounded and inoculated with field soil containing natural populations of fungi, then incubated under different conditions of seed water activity and temperature. Densities of Aspergillus section Flavi in soil used for inoculating seeds were low relative to the total numbers of filamentous fungi (,1%). Aspergillus species from section Flavi …

Down The Hallway Of A Leaf, Taylor Polk

Yalobusha Review

No abstract provided.

In Memory Of Brian Jones, Daniel L. Tickel

Yalobusha Review

No abstract provided.

An Objectionable Ghazal, Maria Fire

Yalobusha Review

No abstract provided.

Touching The Earth, Fred Ferraris

Yalobusha Review

No abstract provided.

Are You Mr. Lonelee?, Brad Watson

Yalobusha Review

No abstract provided.

Same Dog, Duncan Kemp

Yalobusha Review

No abstract provided.

We Were Men And The Fire Made Us, Alex Taylor

Yalobusha Review

No abstract provided.

Subfusc Safari, Fred Ferraris

Yalobusha Review

No abstract provided.

After “Are You Mr. Lonelee?”, Ryan Wagner

Yalobusha Review

No abstract provided.

After “In Memory Of Brian Jones”, Amy Evans

Yalobusha Review

No abstract provided.

After “Memphis”, Jonathan Barnes

Yalobusha Review

No abstract provided.

I Become An Undertaker (July, 1865), Allen Wier

Yalobusha Review

No abstract provided.

After “Down The Hallway Of A Leaf’, Amy Evans

Yalobusha Review

No abstract provided.

After “Camaro Kids”, Ashley Chavis

Yalobusha Review

No abstract provided.

After “One Nation Under Dog”, Jonathan Barnes

Yalobusha Review

No abstract provided.

After “If It’S Not Too Much”, Jonathan Barnes

Yalobusha Review

No abstract provided.

City Of Sherrill V. Oneida Indian Nation Of New York: A Regretful Postscript To The Taxation Chapter In Cohen's Handbook Of Federal Indian Law, Sarah Krakoff

Publications

No abstract provided.

Comparison Of Contact And Spatial Repellency Of Catnip Oil And N,N-Diethyl-3-Methylbenzamide (Deet) Against Mosquitoes, Ulrich R. Bernier, Kay D. Furman, Daniel L. Kline, Sandra A. Allan, Donald R. Barnard

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

Nepetalactone, the primary component of catnip oil, was compared with the repellent N,N-diethyl-3-methylbenzamide (deet) for its ability to affect the host-seeking ability of Aedes aegypti (L.). A triple cage olfactometer was used to bioassay each substance and to assess its attraction inhibition (spatial repellent) attributes when combined with the following attractants: carbon dioxide, acetone, a blend of L-lactic acid and acetone, and human odors. Repellent tests were conducted with each substance against female Ae. aegypti, Anopheles albimanus Weidemann, and Anopheles quadrimaculatus Say. Catnip oil and deet were both weakly attractive to Ae. aegypti, catnip oil was the better spatial …

Habitat Corridors Function As Both Drift Fences And Movement Conduits For Dispersing Flies, Joanna H. Fried, Douglas J. Levey, Jerome Hogsette

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

Corridors connect otherwise isolated habitat patches and can direct movement of animals among such patches. In eight experimental landscapes, we tested two hypotheses of how corridors might affect dispersal behavior. The Traditional Corridor hypothesis posits that animals preferentially leave patches via corridors, following them into adjacent patches. The Drift Fence hypothesis posits that animals dispersing through matrix habitat are diverted into patches with corridors because they follow corridors when encountered. House flies (Musca domestica L.), a species that prefers the habitat of our patches and corridors, were released in a central patch (100x100 m) and recaptured in peripheral patches …