Digital Commons Network^™

Fatherhood And Equality: Reconfiguring Masculinities, Nancy E. Dowd

UF Law Faculty Publications

In this article, Professor Dowd sets out the asymmetric pattern of men’s caretaking as compared to women’s caretaking, and raises the issue of why greater equality has not been achieved in care as women’s participation in the workforce has increased. She argues that not only is this linked to the lack of institutional and structural supports for parenthood, which leads to gendered outcomes in who does care, but in addition, and perhaps most importantly, the barrier to care is cultural, linked to masculinities norms. Dowd sets out the barriers to care linked to masculinities and suggests a further analysis linked …

Attraction Of Stomoxys Sp. To Various Fruits And Flowers In Mali, Günter Müller, Jerome Hogsette, University Of Miami Beier, University Of Bamako, M.B. Toure, M.M. Traore, S. Bah, S. Doumbia, Y. Schlein

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

The attraction of three Stomoxys species to 26 fruits and 26 flowers of different plant species was investigated in two different sites in Mali during 2008. Stomoxys niger bilineatus Grunberg (Diptera: Muscidae) was attracted to a wider spectrum of species, significantly attracted by four fruits and eight flowers compared with control traps, whereas S. sitiens Rondani (Diptera: Muscidae) was attracted to six fruits and seven flowers of different plants, and S. calcitrans L. (Diptera: Muscidae) was only attracted to one fruit and three flowers. Cold anthrone assays showed a significantly higher prevalence of sugar feeding amongst all three species at …

Poly[(R)-3-Hydroxybutyrate)]/Poly(Styrene) Blends Compatibilized With The Relevant Block Copolymer, Mohamed A. Abdelwahab, Elisa Martinelli, Michele Alderighi, Elizabeth Grillo Fernandes, Syed Imam, Andrea Morelli, Emo Chiellini

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

A novel triblock copolymer PS–PHB–PS based on the microbial polyester Poly[(R)-3-hydroxybutyrate)] (PHB) and poly- (styrene) (PS) was prepared to be used as compatibilizer for the corresponding PHB/PS blends. It was prepared in a three-step procedure consisting of (i) transesterification reaction between ethylene glycol and a high-molecular-weight PHB, (ii) synthesis of bromo-terminated PHB macroinitiator, and (iii) atom transfer radical polymerization polymerization of styrene initiated by the PHB-based macroinitiator. Fourier transform infrared, gel permeation chromatography, ¹H-, and ¹³C-NMR spectroscopies were used to determine the molecular structure and/or end-group functionalities at each step of the procedure. Although thermogravimetric analysis …

Identification Of Source-Sink Dynamics In Mountain Lions Of The Great Basin, Alyson M. Andreasen, Kelley M. Stewart, William S. Longland, Jon P. Beckmann, Matthew L. Forister

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

Natural and anthropogenic boundaries have been shown to affect population dynamics and population structure for many species with movement patterns at the landscape level. Understanding population boundaries and movement rates in the field for species that are cryptic and occur at low densities is often extremely difficult and logistically prohibitive; however genetic techniques may offer insights that have previously been unattainable. We analyzed thirteen microsatellite loci for 739 mountain lions (Puma concolor) using muscle tissue samples from individuals in the Great Basin throughout Nevada and the Sierra Nevada mountain range to test the hypothesis that heterogeneous hunting pressure …

Opportunities And Challenges From The Use Of Genomic Selection For Beef Cattle Breeding In Latin America, Hugo H. Montaldo, Eduardo Casas, José Bento Sterman Ferraz, Vicente E. Vega-Murillo, Sergio Iván Román-Ponce

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

In 2009, Latin American countries had approximately 401 million cattle (29% of the world’s total cattle population) and produced 8.2 million tonnes of beef, equivalent to 29% of the world’s total production (FAO, 2011). Beef in Latin American countries is produced under widely differing climates (ranging from tropical to temperate), resources available (vegetation, food), types of markets, and genetic backgrounds of the animals. The main production systems are classified as beef and dual-purpose cattle. The genetic backgrounds of animals vary from purebred European (Bos taurus taurus) or Zebu (Bos taurus indicus) to crossbreeds (Figures 1 and …

Feasibility Of Near Infrared Spectroscopy For Analyzing Corn Kernel Damage And Viability Of Soybean And Corn Kernels, Lidia Esteve Agelet, David D. Ellis, Susan Duvick, A. J. Susana Goggi, Charles R. Hurburgh, Candice A. Gardner

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

The current US corn grading system accounts for the portion of damaged kernels, measured by timeconsuming and inaccurate visual inspection. Near infrared spectroscopy (NIRS), a non-destructive and fast analytical method, was tested as a tool for discriminating corn kernels with heat and frost damage. Four classification algorithms were utilized: Partial least squares discriminant analysis (PLS-DA), soft independent modeling of class analogy (SIMCA), k-nearest neighbors (K-NN), and least-squares support vector machines (LS-SVM). The feasibility of NIRS for discriminating normal or viable-germinating corn kernels and soybean seeds from abnormal or dead seeds was also tested. This application could be highly valuable for …

Molecular Crosstalk Between A Chemical And A Biological Stressor And Consequences On Disease Manifestation In Rainbow Trout, Richard Burki, Aleksei Krasnov, Kathrin Bettge, Caird E. Rexroad Iii, Sergey Afanasyev, Miia Antikainen, Patricia Burkhardt-Holm, Thomas Wahli, Helmut Segner

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

The aim of the present study was to examine the molecular and organism reaction of rainbow trout, Oncorhynchus mykiss, to the combined impact of two environmental stressors. The two stressors were the myxozoan parasite, Tetracapsuloides bryosalmonae, which is the etiological agent of proliferative kidney disease (PKD) and a natural stressor to salmonid populations, and 17β-estradiol (E2) as prototype of estrogen-active chemical stressors in the aquatic environment. Both stressors, the parasite and estrogenic contaminants, co-exist in Swiss rivers and are discussed as factors contributing to the decline of Swiss brown trout populations over the last decades. Using a microarray …

Zebra Chip Disease Of Potato: Biology, Epidemiology, And Management, Joseph E. Munyaneza

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

Zebra chip (ZC), a new and economically important disease of potato (Solanum tuberosum L.), has been documented to occur in commercial potato fields in the United States, Mexico, Central America, and New Zealand. This disease has caused millions of dollars in losses to the potato industry. Whole crops might be rejected because of ZC, often leading to abandonment of entire fields. Plant growth and yield are severely affected by the disease. Additionally, chips or fries processed from ZC-infected tubers exhibit dark stripes that become markedly more visible with frying, and hence are commercially unacceptable. The disease causes serious losses …

Evidence Of Dependence Between Crop Vigor And Yield, James S. Schepers, Kyle H. Holland

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

A recent paper in Precision Agriculture concluded that algorithms to calculate in-season fertilizer nitrogen (N) recommendations need to include yield and fertilizer response considerations because grain yield and yield response index are independent of each other. The authors used maximum and zero N yields from selected long-term wheat and maize studies to support their conclusion. Yields from plots receiving intermediate N rates in the maize study indicated a probable dependence between grain yield and yield response index, which is contrary to the authors’ conclusions. Data from a more recent, long-term irrigated maize study on a similar soil type were used …

Soil Properties Following Reforestation Or Afforestation Of Marginal Cropland, Thomas J. Sauer, David E. James, Cynthia A. Cambardella, Guillermo Hernandez-Ramirez

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

Aims Reforestation or afforestation of marginal agricultural lands offers opportunities to sequester soil organic carbon (SOC), improve the quality of degraded soils, and provide ecosystem services. The objectives of this study were to identify the extent and distribution of marginally productive cropland in the state of Iowa and to quantify the changes in SOC and relevant soil properties following tree planting.

Methods A geographic information system (GIS) analysis was used to identify 1.05 million ha of marginal cropland within the state. Soil samples were collected from four locations with (<51 yr-old) forest plantations and adjacent crop fields. Soil samples were analyzed for SOC, total nitrogen (TN), pH, cation exchange capacity (CEC), ammonium acetateextractable K, Ca, Mg, and Na, and particle size.

Results The forested soils had 30.0±5.1 % (mean ±standard error) …

Evidence Of Dependence Between Crop Vigor And Yield, James S. Schepers, Kyle H. Holland

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

A recent paper in Precision Agriculture concluded that algorithms to calculate in-season fertilizer nitrogen (N) recommendations need to include yield and fertilizer response considerations because grain yield and yield response index are independent of each other. The authors used maximum and zero N yields from selected long-term wheat and maize studies to support their conclusion. Yields from plots receiving intermediate N rates in the maize study indicated a probable dependence between grain yield and yield response index, which is contrary to the authors’ conclusions. Data from a more recent, long-term irrigated maize study on a similar soil type were used …

Genome-Wide Peripheral Blood Leukocyte Dna Methylation Microarrays Identified A Single Association With Inflammatory Bowel Diseases, R. Alan Harris, Dorottya Nagy-Szakal, Natalia Pedersen, Antone Opekun, Jiri Bronsky, Pia Munkholm, Cathrine Jespersgaard, Paal Skytt Andersen, Bela Melegh, George Ferry, Tine Jess, Richard Kellermayer

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

Background: Crohn’s disease (CD) and ulcerative colitis (UC) are common forms of inflammatory bowel disease (IBD). Monozygotic (MZ) twin discordance rates and epidemiologic data implicate that environmental changes and epigenetic factors may play a pathogenic role in IBD. DNA methylation (the methylation of cytosines within CpG dinucleotides) is an epigenetic modification, which can respond to environmental influences. We investigated whether DNA methylation might be connected with IBD in peripheral blood leukocyte (PBL) DNA by utilizing genome-wide microarrays.

Methods: Two different high-throughput microarray-based methods for genome-wide DNA methylation analysis were employed. First, DNA isolated from MZ twin pairs concordant …

Impact Of Insecticide And Fungicide Residue Contact On Plum Curculio, Conotrachelus Nenuphar (Herbst),Mobility And Mortality: Implications For Pest Management, Tracy C. Leskey, Starker E. Wright, Julien Saguez, Charles Vincent

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

BACKGROUND: An evaluation was made of the effects of seven neurotoxic insecticides (esfenvalerate, indoxacarb, clothianidin, thiacloprid, azinphosmethyl, phosmet and imidacloprid), one insect growth regulator (novaluron) and two fungicides (myclobutanin and mancozeb), with water as the control, on the horizontal mobility of plum curculios exposed to dried pesticide residues. Mobility was recorded over a 2 h period using ethological tracking software. Mortality was recorded immediately after horizontal mobility experiments and 24 h later.

RESULTS: Esfenvalerate had the greatest impact on mobility. Immediately after exposure to this compound, plum curculios moved significantly greater distances and for a significantly longer period …

Effects Of Piperidine And Piperideine Alkaloids From The Venom Of Red Imported Fire Ants, Solenopsis Invicta Buren, On Pythium Ultimum Trow Growth In Vitro And The Application Of Piperideine Alkaloids To Control Cucumber Damping-Off In The Greenhouse, Shezeng Li, Xixuan Jin, Jian Chen

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

BACKGROUND: Pythium ultimum is a plant pathogen that causes significant yield losses on many economically important crops. Chemical treatment has been used for disease control. In searching for alternatives, venom piperidine and piperideine alkaloids from red imported fire ants were tested against P. ultimum in vitro, and piperideines were employed to control cucumber damping-off in the greenhouse as drench treatments.

RESULTS: Piperidineandpiperideine alkaloids of the red imported fire ant significantly inhibited mycelium growth of P.ultimum. Piperidine alkaloids were stable at both room and elevated temperatures. The inhibitory activity positively correlated with the concentrations of piperidine alkaloids …

Female Mating Failure And The Failure Of ‘Mating’ In Sterile Insect Programs, Diana Pérez-Staples, Todd E. Shelly, Boaz Yuval

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

The sterile insect technique (SIT) involves the inundative release of irradiated (sterile or partially sterile) insects to decrease population levels in a target pest species. The effectiveness of SIT programs depends on sterile males mating successfully and inducing reproductive failure in wild females, or in the F1 generation in the case of lepidopteran species. Thus, from the perspective of insect control, female mating failure involves mating with a mass-reared, sterilized male, which then results in female reproductive failure. Here, we review female mating failure in the context of SIT at two stages. First, at the pre-copulatory stage we consider factors …

Effects Of Floral And Extrafloral Resource Diversity On The Fitness Of An Omnivorous Bug, Orius Insidiosus, Lorena Pumariño, Oscar Alomar, Jonathan G. Lundgren

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

Habitat manipulation and increasing biodiversity are important approaches that enhance biological control of pests, but it is important to evaluate the relative benefits of specific plant species when designing conservation programs. Orius insidiosus Say (Hemiptera: Anthocoridae) is an important predator of thrips and aphids that also feeds on plants. It is the target of conservation biological control programs. Despite O. insidiosus’ relevance, little is known about the effects of plant subsidies on predator performance or nutritional status. Here, we examined the influence of restricting the pollen and nectar resources of five plant species (alyssum, buckwheat, phacelia, fava bean, and chamomile), …

Biofuel Production From Water Hyacinth In The Pantanal Wetland, Ivan Bergier, Suzana M. Salis, César H.B. Miranda, Enrique Ortega, Carlos A. Luengo

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

The Pantanal is a major wetland in the inner South America, with the potential for production of large quantities of biomass of aquatic floating species, especially water hyacinth (Eicchornia crassipes and E. azurea), during the aquatic phase of the flood pulse characteristic for this ecosystem. Such biomass could be wisely managed for the production of biofuels. This should be based on the concepts of renewability and ecosystem surplus, and could help in neutralizing of regional and global industrial carbon impacts and to induce socioeconomic development. The aquatic biomass exploitation would require low fossil energy and materials inputs, leaving …

Links Among Nitrification, Nitrifier Communities, And Edaphic Properties In Contrasting Soils Receiving Dairy Slurry, Ann-Marie Fortuna, C. Wayne Honeycutt, George Vandemark, Timothy S. Griffin, Robert P. Larkin, Zhongqi He, Brian J. Wienhold, Karamat R. Sistani, Stephan L. Albrecht, Bryan L. Woodbury, Henry A. Torbert, J. Mark Powell, Robert K. Hubbard, Roger A. Eigenberg, Robert J. Wright, J. Richard Alldredge, James B. Harsh

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

Soil biotic and abiotic factors strongly influence nitrogen (N) availability and increases in nitrification rates associated with the application of manure. In this study, we examine the effects of edaphic properties and a dairy (Bos taurus) slurry amendment on N availability, nitrification rates and nitrifier communities. Soils of variable texture and clay mineralogy were collected from six USDA–ARS research sites and incubated for 28 d with and without dairy slurry applied at a rate of ~300 kg N ha⁻¹. Periodically, subsamples were removed for analyses of 2 M KCl extractable N and nitrification potential, as well …

Ip Injury And The Institutions Of Patent Law, Paul R. Gugliuzza

UF Law Faculty Publications

This paper reviews Creation Without Restraint: Promoting Liberty and Rivalry in Innovation, the pathbreaking book by Christina Bohannan and Herbert Hovenkamp (Oxford Univ. Press 2012). The Review begins by summarizing the book’s descriptive insights and analyzing one of its important normative proposals: the adoption of an IP injury requirement. This requirement would demand that infringement plaintiffs prove -- before obtaining damages or an injunction -- an injury to the incentive to innovate. After explaining how this requirement is easy to justify under governing law and is largely consistent with recent Supreme Court decisions in the field of patent law, …

Ecology Of Common Salvinia, Salvinia Minima Baker, In Southern Florida, Philip W. Tipping, Melissa R. Martin, Laurie Bauer, Ryan M. Pierce, Ted D. Center

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

Populations of the floating macrophyte, Salvinia minima Baker, were assessed over a 39-month period at four sites in southern Florida in order to elucidate the abiotic and biotic factors that influenced their density. These factors included the abundance of other plant species, changes in water depth, water quality, and herbivory by insects. Abiotic factors like temperature, pH, DO, and conductivity varied among sites and, more importantly, over time. The same was true for S. minima biomass, coverage, and condition. Principal component analysis identified four components which together explained 64% of the variability in S. minima biomass. The first component correlated …

Next-Generation Sequencing Of Crown And Rhizome Transcriptome From An Upland, Tetraploid Switchgrass, Nathan A. Palmer, Aaron J. Saathoff, Jaehyoung Kim, Andrew Benson, Christian M. Tobias, Paul G. Twigg, Kenneth P. Vogel, Soundararajan Madhavan, Gautam Sarath

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

The crown and rhizome transcriptome of an upland tetraploid switchgrass cultivar cv Summer well adapted to the upper Midwest was investigated using the Roche 454-FLX pyrosequencing platform. Overall, approximately one million reads consisting of 216 million bases were assembled into 27,687 contigs and 43,094 singletons. Analyses of these sequences revealed minor contamination with non-plant sequences (< 0.5%), indicating that a majority were for transcripts coded by the switchgrass genome. Blast2Gos comparisons resulted in the annotation of ~65% of the contig sequences and ~40% of the singleton sequences. Contig sequences were mostly homologous to other plant sequences, dominated by matches to Sorghum bicolor genome. Singleton sequences, while displaying significant matches to S. bicolor, also contained sequences matching non-plant species. Comparisons of the 454 dataset to existing EST collections resulted in the identification of 30,177 new sequences. These new sequences coded for a number of …

Crystal Structure Of Bacillus Subtilis Gabr, An Autorepressor And Transcriptional Activator Of Gabt, Raji Edayathumangalam, Rui Wu, Roman Garcia, Yuguang Wang, Wei Wang

Chemistry: Faculty Publications and Other Works

Bacillus subtilis GabR is a transcription factor that regulates gamma-aminobutyric acid (GABA) metabolism. GabR is a member of the understudied MocR/GabR subfamily of the GntR family of transcription regulators. A typical MocR/GabR-type regulator is a chimeric protein containing a short N-terminal helix-turn-helix DNA-binding domain and a long C-terminal pyridoxal 5′-phosphate (PLP)-binding putative aminotransferase domain. In the presence of PLP and GABA, GabR activates the gabTD operon, which allows the bacterium to use GABA as nitrogen and carbon sources. GabR binds to its own promoter and represses gabRtranscription in the absence of GABA. Here, we report two crystal structures of …

Lae1 Regulates Expression Of Multiple Secondary Metabolite Gene Clusters In Fusarium Verticillioides, Robert A.E. Butchko, Daren W. Brown, Mark Busman, Bettina Tudzynski, Philipp Wiemann

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

The filamentous fungus Fusarium verticillioides can cause disease of maize and is capable of producing fumonisins, a family of toxic secondary metabolites linked to esophageal cancer and neural tube defects in humans and lung edema in swine and leukoencephalomalacia in equines. The expression of fumonisin biosynthetic genes is influenced by broad-domain transcription factors (global regulators) and Fum21, a pathway-specific transcription factor. LaeA is a global regulator that in Aspergillus nidulans, affects the expression of multiple secondary metabolite gene clusters by modifying heterochromatin structure. Here, we employed gene deletion analysis to assess the effect of loss of a F. verticillioides …

Chronic And Degenerative Diseases Similarities And Differences Between The Effects Of Epa And Dha On Markers Of Atherosclerosis In Human Subjects*, Darshan S. Kelley, Yuriko Adkins

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

We have reviewed effects of long chain (LC) n-3 PUFA on markers of atherosclerosis in human subjects with a focus on individual effects of EPA and DHA. Initial results from epidemiological studies suggested that LC n-3 PUFA from fish oils (FO) reduced incidence of CVD; those results have been confirmed in interventional studies. Dietary intervention with n-3 PUFA decreased fasting and postprandial TAG, number of remnant-like chylomicron particles, large VLDL, and total and small dense LDL particles. It increased mean size of LDL particles by increasing number of large and decreasing those of small dense particles. With some exceptions, n-3 …

Test 2035: John Deere 6210r, Nebraska Tractor Test Lab

Nebraska Tractor Tests

ABOUT THE TEST REPORT AND USE OF THE DATA The test data contained in this report are a tabulation of the results of a series of tests. Due to the restricted format of these pages, only a limited amount of data and not all of the tractor specifications are included. The full OECD report contains usually about 30 pages of data and specifications. The test data were obtained for each tractor under similar conditions and therefore, provide a means of comparison of performance based on a limited set of reported data. EXPLANATION OF THE TEST PROCEDURES Purpose The purpose of …

Test 2043: John Deere 9510rt, Nebraska Tractor Test Lab

Nebraska Tractor Tests

ABOUT THE TEST REPORT AND USE OF THE DATA The test data contained in this report are a tabulation of the results of a series of tests. Due to the restricted format of these pages, only a limited amount of data and not all of the tractor specifications are included. The full OECD report contains usually about 30 pages of data and specifications. The test data were obtained for each tractor under similar conditions and therefore, provide a means of comparison of performance based on a limited set of reported data. EXPLANATION OF THE TEST PROCEDURES Purpose The purpose of …

Test 2039: John Deere 9410r, Nebraska Tractor Test Lab

Nebraska Tractor Tests

ABOUT THE TEST REPORT AND USE OF THE DATA The test data contained in this report are a tabulation of the results of a series of tests. Due to the restricted format of these pages, only a limited amount of data and not all of the tractor specifications are included. The full OECD report contains usually about 30 pages of data and specifications. The test data were obtained for each tractor under similar conditions and therefore, provide a means of comparison of performance based on a limited set of reported data. EXPLANATION OF THE TEST PROCEDURES Purpose The purpose of …

Test 2032a: Challenger Mt595b, Nebraska Tractor Test Lab

Nebraska Tractor Tests

ABOUT THE TEST REPORT AND USE OF THE DATA The test data contained in this report are a tabulation of the results of a series of tests. Due to the restricted format of these pages, only a limited amount of data and not all of the tractor specifications are included. The full OECD report contains usually about 30 pages of data and specifications. The test data were obtained for each tractor under similar conditions and therefore, provide a means of comparison of performance based on a limited set of reported data. EXPLANATION OF THE TEST PROCEDURES Purpose The purpose of …

Undergraduate Catalog, 2012-2013, Valparaiso University

Undergraduate Catalogs

No abstract provided.

Proof Of Classwide Injury, Sergio J. Campos

Articles

No abstract provided.