Digital Commons Network^™

Fertilizers In Aquaculture, Bartholomew Green

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

Pond fertilization is an important component of semi-intensive to intensive aquaculture pond management that supports successful production of the culture organism. Semi-intensive and intensive aquaculture pond management fall along the extensive to hyper-intensive management continuum and are characterized by high stocking rate of the culture animal, limited use of fertilizers, use of compound or complete feeds, and water quality monitoring and management, including use of mechanical aeration. Fertilization contributes to establishing and maintaining a pond environment that allows the culture organism to utilize efficiently the compound or complete feeds offered. This chapter presents information on pond food webs, sources and …

Female Breakfast Skippers Display A Disrupted Cortisol Rhythm And Levated Blood Pressure, Megan Witbracht, Nancy L. Keim, Shavawn Forester, Adrianne Widaman, Kevin D. Laugero

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

Chronic stress and over-activity in the hypothalamic–pituitary–adrenal (HPA) axis may link breakfast skipping and poor cardiometabolic health. Missing the first major meal of the day in rodents prolongs elevated circulating corticosterone at a time when it's normally decreasing. To extend these findings to humans, we hypothesized that habitual breakfast skippers would display a similar pattern of circulating cortisol and alterations in meal and stress-induced cortisol reactions. Normal weight to obese women aged 18–45 years old who were strictly defined as either breakfast skippers (n = 30) or breakfast eaters (n = 35) were invited to participate in our …

Hypoxia Affects Performance Traits And Body Composition Of Juvenile Hybrid Striped Bass (Morone Chrysops X M. Saxatilis), Bartholomew W. Green, Steven D. Rawles, Sidney A. Fuller, Benjamin H. Beck, Matthew E. Mcentire

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

Performance traits and body composition of juvenile hybrid striped bass (Morone chrysops x M. saxatilis) in response to hypoxia were evaluated in replicate tanks maintained at constant dissolved oxygen concentrations that averaged 23.0 ± 2.3%, 39.7 ± 3.0%, and 105.5 ± 9.5% dissolved oxygen saturation. Fish were fed a commercially formulated feed daily to apparent satiation. Total feed intake and fish growth and yield increased linearly in response to increased dissolved oxygen concentration. Nutrient utilization was reduced significantly only at the greatest level of hypoxia. With the exception of whole-body protein content, whole body compositional indices and nutrient …

Food Reinforcement And Delay Discounting In Zbmi-Discordant Siblings, Denise M. Feda, James N. Roemmich, April Roberts, Leonard H. Epstein

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

Objective: The interaction of food reinforcement and the inability to delay gratification are related to adult energy intake and obesity. This study was designed to test the association of sibling pair differences in relative reinforcing efficacy of food and delay discounting on sibling pair differences in zBMI scores of same-gender zBMI-discordant siblings. Design and methods: We tested main and interactive relationships between delay discounting and relative reinforcing efficacy of food on zBMI discordance in 14 zBMI- discordant biological sibling pairs (6 female pairs) using a discordant sibling study design. Results: Sibling pair differences in relative reinforcing efficacy of food were …

Nile Tilapia And Blue Tilapia Fry Production In A Subtropical Climate Based On Degree Days, Bartholomew W. Green, Esam H. Rizkalla

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

The relationship between production in subtropical earthen ponds of fry suitable for hormonal sex inversion and degree days was quantified for Nile tilapia (Oreochromis niloticus; Egypt strain) and blue tilapia (O. aureus). Degree days were calculated for each trial as the sum of mean daily water column temperature minus the reference temperature, 15◦C. No fry from either species were harvested at fewer than 124–126 degree days. Total fry production for each increased linearly as cumulative degree days increased from 129 to 281 degree days. Production of fry suitable for hormonal sex inversion was positively related to …

Behavioral And Heart-Defined Attention In Infants At High Genetic Risk For Autism, Bridgette L. Tonnsen

Theses and Dissertations

Characterizing early predictors of autism facilitates earlier identification, diagnosis and treatment. Although aberrant visual attention is one of the earliest identified predictors of autism and may play an integral role in developmental cascades that contribute to associated impairments, the emergence of atypical attention in infancy is poorly understood. The present dissertation includes three related manuscripts examining early patterns of visual attention in two infant samples at elevated risk for autism: infant siblings of children with autism (ASIBs) and infants with fragile X syndrome (FXS). Together, these manuscripts identify patterns of abnormal heart defined attention among ASIBs (Study 1), investigate the …

Potential Range Expansion Of The Invasive Lionfish In The Western Atlantic Ocean, Brian Grieve

Theses and Dissertations

Lionfish (Pterois volitans) are an invasive, predatory fish native to the reefs of the Indo-Pacific. In the mid-1980s, lionfish were introduced off the coast of Miami, FL and have since transformed many of the reef ecosystems throughout the Western Atlantic Ocean. Although lionfish are found year-round as far north as Cape Hatteras, NC, they are confined to the warm Gulf Stream during winter months. Seasonal inshore expansion is possible in the summer, and further poleward expansion is limited by cold bottom-water temperatures in winter. Here, I use an ensemble of 17 different climate models to project lionfish habitat by the …

The Trialectics Of Transnational Migrant Women’S Literature In The Writing Of Edwidge Danticat And Julia Alvarez, Jennifer Lynn Karash-Eastman

Theses and Dissertations

While a considerable critical field has developed around US Latino writing, due to the historical, cultural and sociolinguistic barriers between the two nations of Haiti and the Dominican Republic, critical investigations of these migrant literatures are often not bridged, but rather isolated into respective Haitian-American and Dominican-American designations. My comparative, critical framework defines the interactions between gender, culture and the diverse spatial coordinates from the island of Hispaniola, the Atlantic and the United States. The carefully differentiated objects of study that I articulate in each chapter offer a desirable interdisciplinary orientation inclusive of gender theory as well as cultural studies. …

Responding To Requests For Assisted Reproductive Technology Intervention Involving Women Who Cannot Give Consent, Jennifer S. Bard, Lindsay Penrose

UF Law Faculty Publications

One of the plots of the Canadian science fiction thriller Orphan Black involves a scheme to create dozens of siblings by harvesting the eggs of one woman, fertilizing them with the sperm of a single man, and implanting them for gestation in dozens of apparently willing surrogates. The casualness of the procedure speaks to how comfortable we have all become with reproduction by technology. Yet there are still aspects of this process that remain outside the normative boundaries of most of our worldviews. This article considers recent advances in assisted reproductive technology (ART) that can result in a viable, fertilized …

Unacknowledged Victims: Love Between Women In The Narrative Of The Holocaust. An Analysis Of Memoirs, Novels, Film And Public Memorials, Isabel Meusen

Theses and Dissertations

This dissertation combines cultural theory and gender theory with literary criticism to evaluate the treatment of lesbians during the Holocaust and in narratives about the Holocaust. Responding to the kissing-scene controversy of the Berlin memorial for the homosexual victims of the Holocaust I claim that lesbian women’s experience of suffering is downplayed and disappears under the umbrella term ‘homosexuals.’ Employing a critical historical conceptualization of “lesbian love,” I consider examples from Claudia Schoppmann’s Days of Masquerade and Verbotene Verhältnisse as well as the personal estate of political activist Hilde Radusch to trace the personal view lesbians have of themselves. Shifting …

Fish Remains From The Beatty Curve Site (35kl95), Virginia L. Butler, J. Tait Elder, Daniel Mcgowan Gilmour, Alexander E. Stevenson, Camilla F. Speller

Anthropology Faculty Publications and Presentations

The archaeological record of fish in the Upper Klamath Basin is important for several reasons. First it is important to descendant indigenous people in the region. Nineteenth century explorer accounts and ethnographic records highlight the importance of fish to subsistence and overall lifeways of Klamath basin people in the 19th and 20th centuries before major habitat destruction (Gatschet 1890; Spier 1930; Lane and Lane Associates 1981; Deur 2003b). Ancient fish bone records emphasize the long-term relationships between fish and Native Americans and the range and diversity of fish species used, which have been in great decline over the past several …

Development Of A Large Set Of Microsatellite Markers In Zapote Mamey (Pouteria Sapota (Jacq.) H.E. Moore & Stearn) And Their Potential Use In The Study Of The Species, Renée S. Arias, Jaime Martínez-Castillo, Victor S. Sobolev, Nasib H. Blancarte-Jasso, Sheron A. Simpson, Linda L. Ballard, Mary V. Duke, Xiaofen F. Liu, Brian M. Irish, Brian E. Scheffler

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

Pouteria sapota is known for its edible fruits that contain unique carotenoids, as well as for its fungitoxic, anti-inflammatory and anti-oxidant activity. However, its genetics is mostly unknown, including aspects about its genetic diversity and domestication process. We did high-throughput sequencing of microsatellite-enriched libraries of P. sapota, generated 5223 contig DNA sequences, 1.8 Mbp, developed 368 microsatellites markers and tested them on 29 individuals from 10 populations (seven wild, three cultivated) from Mexico, its putative domestication center. Gene ontology BLAST analysis of the DNA sequences containing microsatellites showed potential association to physiological functions. Genetic diversity was slightly higher in …

Ecology, Behavior And Bionomics First Genotyping Of Spodoptera Frugiperda (J. E. Smith) (Lepidoptera: Noctuidae) Progeny From Crosses Between Bt-Resistant And Bt-Susceptible Populations, And 65-Locus Discrimination Of Isofamilies, R. S. Arias, M. Portilla, J. D. Ray, C. A. Blanco, S. A. Simpson, B. E. Sch Effler

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

Concerns exist that Bt-resistant populations of Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae) found in Puerto Rico, could spread to continental United States, and about the lack of molecular tools to monitor potential crosses or distinguish populations. In this work, the feasibility of genotyping S. frugiperda crosses between Bacillus thuringiensis (Berliner) (Bacillales: Bacillaceae) (Bt) resistant and susceptible populations using simple sequence repeats (SSRs, or microsatellites) was assessed. Parents and their corresponding progeny (five resistant, five susceptible phenotype) were genotyped using 192 SSRs on three reciprocate crosses alternating male and female from Bt-susceptible and Bt-resistant populations. Oviposition, mortality and fecundity were …

Draft Genome Sequence Of Cercospora Arachidicola, Causal Agent Of Early Leaf Spot In Peanuts, Valerie A. Orner, Emily G. Cantowine, Xinye Monica Wang, Amr Abouelleil, James Bochicchio, Chad Nusbaum, Albert C. Culbreath, Zaid Abdo, Renee S. Arias

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

Cercospora arachidicola, causal agent of early leaf spot, is an economically important peanut pathogen. Lack of genetic information about this fungus prevents understanding the role that potentially diverse genotypes may have in peanut breeding programs. Here, we report for the first time a draft genome sequence of C. arachidicola.

Draft Genome Sequence Of Cercospora Arachidicola, Causal Agent Of Early Leaf Spot In Peanuts, Valerie A. Orner, Emily G. Cantonwine, Xinye Monica Wang, Amr Abouelleil, James Bochicchio, Chad Nusbaum, Albert K. Culbreath, Zaid Abdo, Renee S. Arias

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

Early leaf spot caused by Cercospora arachidicola S. Hori (teleomorph Mycosphaerella arachidis Deighton) is one of two important leaf spot diseases in peanut (Arachis hypogaea L.) responsible for significant economic loss to the industry (1, 2). Infections by C. arachidicola appear as small necrotic lesions on the leaves, petioles, or stems, which may be followed by premature defoliation, and, if left unmanaged on susceptible cultivars, can severely decrease yield (1). An effective, yet expensive, disease management strategy consists of multiple fungicide applications throughout the growing season (3). Other strategies such as strip-tillage instead of conventional tillage (4) or weather …

Structural Biology Of Peanut Allergens, Lesa R. Offermann, Makenzie L. Perdue, John Z. He, Barry K. Hurlburt, Soheila J. Maleki, Maksymilian Chruszcz

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

Peanuts are a cause of one of the most common food allergies. Allergy to peanuts not only affects a significant fraction of the population, but it is relatively often associated with strong reactions in sensitized individuals. Peanut and tree nut allergies, which start in childhood are often persistent and continue through life, as opposed to other food allergies that resolve with age. Cherefore, peanut allergens are one of the most intensively studied food allergens. In this review we focus on the structural studies of peanut allergens. Despite the fact that these allergens are attracting a lot of interest and several …

Increased Seed Consumption By Biological Control Weevil Tempers Positive Co2 Effect On Invasive Plant (Centaurea Diffusa) Fitness, Justin L. Reeves, Dana M. Blumenthal, Julie A. Kray, Justin D. Derner

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

Predicted increases in atmospheric CO₂ and temperature may benefit some invasive plants, increasing the need for effective invasive plant management. Biological control can be an effective means of managing invasive plants, but the anticipated range in responses of plant–insect interactions to climate change make it difficult to predict how effective biological control will be in the future. Field experiments that manipulate climate within biological control systems could improve predictive power, but are challenging to implement and therefore rare to date. Here, we show that free air CO₂ enrichment in the field increased the fitness of Centaurea diffusa Lam., …

Test 2116: John Deere 5100m, 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 2122a: Case Ih Magnum 250, 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 …

Metal And Prestige In The Greater Lower Columbia River Region, Northwestern North America, H. Kory Cooper, Kenneth Ames, Loren G. Davis

Anthropology Faculty Publications and Presentations

Excavations at the late prehistoric-early historic Chinookan sites of Meier and Cathlapotle in the Greater Lower Columbia Region recovered several hundred metal artifacts. Portable X-ray fluorescence (XRF) was used initially to quickly determine metal type. Then a sample of copper artifacts was subjected to another round of XRF analysis to identify the presence of native copper and, or, chronologically sensitive copper metals. No native copper artifacts were identified and the lack of Muntz metal, a specific type of brass patented in the 1830s, corroborates the dating of material from both sites as no later than the early historic period. Meier …

Guidance Counselor Survey, Chery Justice, Kathleen Sherman-Morris, Kimberly Hall

CAS Publications

This is a survey created to study guidance/career counselor opinions about the geosciences and other STEM fields, and the career counseling activities they use.

An Investigation Into Bacterial Contamination In An Urban Nebraska Stream Using Microbial Source Tracking, Allison R. Speicher

Department of Civil and Environmental Engineering: Dissertations, Theses, and Student Research

High levels of fecal bacteria in surface waters are a public health concern due to the enteric illnesses caused by primary contact with these waters. Shortcomings in the current fecal indicator bacteria (FIB) monitoring approach and the ubiquity of pathogen-impaired water bodies has led to the development of microbial source tracking (MST), a molecular tool that can identify potential fecal contamination sources. In this study we use a bacterial community based approach examining the V4 region of the 16S rRNA gene to elucidate sources of fecal bacteria in Antelope Creek, an urban creek in Lincoln Nebraska.

We hypothesized that sediment …

Regulating Mass Surveillance As Privacy Pollution: Learning From Environmental Impact Statements, A. Michael Froomkin

Articles

Encroachments on privacy through mass surveillance greatly resemble the pollution crisis in that they can be understood as imposing an externality on the surveilled. This Article argues that this resemblance also suggests a solution: requiring those conducting mass surveillance in and through public spaces to disclose their plans publicly via an updated form of environmental impact statement, thus requiring an impact analysis and triggering a more informed public conversation about privacy. The Article first explains how mass surveillance is polluting public privacy and surveys the limited and inadequate doctrinal tools available to respond to mass surveillance technologies. Then, it provides …

Nebraska Summary: S992 Massey Ferguson 8735, 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 …

Nebraska Summary: S989a Massey Ferguson 8727, 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 …

A Threat Intelligence Framework For Access Control Security In The Oil Industry, Faisal Talal Alaskandrani

Open Access Theses

The research investigates the problem raised by the rapid development in the technology industry giving security concerns in facilities built by the energy industry containing diverse platforms. The difficulty of continuous updates to network security architecture and assessment gave rise to the need to use threat intelligence frameworks to better asses and address networks security issues. Focusing on access control security to the ICS and SCADA systems that is being utilized to carry out mission critical and life threatening operations. The research evaluates different threat intelligence frameworks that can be implemented in the industry seeking the most suitable and applicable …

Chlorfenapyr And Bifenthrin Susceptibility Monitoring Of Field Collected Bed Bug Populations From The United States, Aaron Richard Ashbrook

Open Access Theses

Complete and effective elimination of common bed bug (Cimex lectularius) infestations continues to be a challenge for the pest management industry. However, effective bed bug control can be achieved through integrated pest management (IPM) programs that use a variety of control techniques. An integral component of an IPM program is the type of insecticide applied. However, insecticide products for bed bug control are somewhat limited as resistance to some pyrethroid insecticides, such as deltamethrin has developed. Currently, chlorfenapyr and bifenthrin are two insecticides approved for bed bug control. Chlorfenapyr is a pro-insecticide from the pyrrole class. Bifenthrin is a type-I …

Community Detection Using Efficient Modularity Optimization Method: Labelmod With Single And Multi-Layer Graphs, Seokhun Bang

Open Access Theses

Graph clustering is a field of study that helps reveal characteristics of communities. Systems can be viewed as networks and form communities in various areas such as biology, computer science, engineering, economics, and politics. A clustering algorithm is a tool that detects communities and it can be also considered as a pre-processing step to study the characteristics of detected communities. Many efforts were made to develop a well performing clustering algorithm in different types of networks. In recent literature, a concept of multi-layer graphs emerged, and clustering algorithms are being developed to detect communities in the multi-layer graphs. In this …

Arabidopsis Myosin Is Involved In The Distribution And Dynamic Behavior Of The Cellulose Synthase Complex, Chao Cai

Open Access Theses

Plant cells are encased in cell walls which are important for the growth and development of the organism. Primary cell wall consists mainly of polysaccharides with cellulose as the most abundant component. In plant cells, cellulose is synthesized by a plasma membrane (PM) localized protein complex called the cellulose synthase complex (CSC). It was previously reported that disrupting normal actin organization resulted in a reduction of cellulose content in Arabidopsis dark-grown seedlings. Furthermore, actin was found to facilitate the delivery of CSC into the PM, and inferred to be involved in endocytosis. As a motor protein that translocates cargo along …

Estimating Phosphorus Removal By Steel Slag In A Flume Experiment: Effects Of Phosphorus Concentration And Subsurface Hydrological Condition, Isis Stacanelli Pires Chagas

Open Access Theses

Excessive phosphorus (P) in water bodies is one of the most concerning water quality issues in the U.S., impacting public health, the environment and the economy. Managing excessive P is essential to reduce the incidence of environmental quality issues, such as eutrophication and harmful algal blooms. One potential strategy that is being developed for this purpose is the use of P sorption materials (PSMs) to sequester P from water systems, which is the objective of this study.