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2012

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Articles 181 - 210 of 6458

Full-Text Articles in Life Sciences

Nebraska Bird Review (December 2012) 80(4), Whole Issue Dec 2012

Nebraska Bird Review (December 2012) 80(4), Whole Issue

Nebraska Bird Review

Fall Field Report, August–November 2012 … 126

Bellevue Fall Field Days ... 158

Notes on a Greater Sage-Grouse Record by Levi L. Mohler ... 162

Index to Volume 80 ... 164

Subscription and Organization Information ... 175


Fall Field Report, August–November 2012, W. Ross Silcock Dec 2012

Fall Field Report, August–November 2012, W. Ross Silcock

Nebraska Bird Review

Some of you may be curious about the sources of sightings I use to compile these reports. The primary sources are reports posted to NEBirds, the Nebraska Listserv, along with the full reports (early and late dates, peak counts for all species) sent by a few faithful reporters around the state. The latter reports are very useful overviews of movements in the reporters' regions. Lately, thanks to a suggestion by Clem Klaphake, I have been receiving the eBird daily rarity report for Nebraska which I find to be an excellent check against reports posted to NEBirds, while providing a few …


Notes On A Greater Sage-Grouse Record By Levi L. Mohler, Mark A. Brogie Dec 2012

Notes On A Greater Sage-Grouse Record By Levi L. Mohler, Mark A. Brogie

Nebraska Bird Review

In Nebraska, Greater Sage-Grouse has been considered an uncommon casual winter visitor in the extreme northwest (Sharpe et al. 2001). This species may now be extirpated in Nebraska due to habitat loss. There have been no known Nebraska observations of Greater Sage-Grouse in the last 25 years. The only documented record accepted by the NOURC of Greater Sage-Grouse in Nebraska (Accession #243) is a description of an adult male in September 1987 in extreme northwest Sioux County by Douglas Kapke (Grenon AG. 1990).

In 2002 Wayne Mollhoff received the following record from Levi L. Mohler and submitted it to the …


Terrestrial And Semi-Aquatic Vertebrates In Diets Of Largemouth Bass In Central Nebraska, Seth A. Lundgren, Keith Geluso, Casey W. Schoenebeck Dec 2012

Terrestrial And Semi-Aquatic Vertebrates In Diets Of Largemouth Bass In Central Nebraska, Seth A. Lundgren, Keith Geluso, Casey W. Schoenebeck

The Prairie Naturalist

Largemouth bass (Micropterus salmoides) are opportunistic predators often feeding in littoral areas during crepuscular periods (Snow 1971). Adult largemouth bass primarily are piscivorous, whereas juveniles generally consume zooplankton, insects, and small fish (Zweiacker and Summerfelt 1974, Carlander 1977, Post 2003). Age-0 largemouth bass generally consume zooplankton and macroinvertebrates (Keast and Webb 1966, Keast 1985, Phillips et al. 1995, Post 2003) and shift to piscivory at 50-70 mm in length (Phillips et al. 1995, Olson 1996, Post 2003). Few studies have documented detailed accounts of other vertebrates besides fish in diets of largemouth bass, which include amphibians (Hodgson and …


Bellevue Fall Field Days, Janis Paseka Dec 2012

Bellevue Fall Field Days, Janis Paseka

Nebraska Bird Review

The 2012 NOU Fall Field Days was held in conjunction with the Inland Bird Banding Association meeting at Fontenelle Forest Nature Center in Bellevue on October 26–28. The meeting, organized by Betty Grenon and Rick Schmid, drew a total of 104 attendees, including 33 members of the Inland Bird Banding Association.

On Friday evening, Phil Swanson's photographic presentation "Welcome to Omaha . . . It's for the Birds" included a brief history of Omaha, an overview of area birding hotspots, and photos of many of the birds which can be seen in the area. Following the presentation, a group led …


Forage News [2012-12], Department Of Plant And Soil Sciences, University Of Kentucky Dec 2012

Forage News [2012-12], Department Of Plant And Soil Sciences, University Of Kentucky

Forage News

  • Farm Bureau Forage Commodity Conference
  • AFGC will hold its Annual Meeting this January in Kentucky
  • Forages at KCA
  • Kentucky Small Ruminant Grazing Conference
  • Heart of America Grazing Conference
  • Choose Forage Varieties Wisely
  • Hay Testing - A Wise Investment
  • Energy-Crop Calculator Available Online
  • Strong Hay Prices through Winter Maybe Longer
  • Dairy Herd Expansion Unlikely in 2013
  • What is Really Important?


Economic Impacts Of The Kentucky Green Industry, Dewayne L. Ingram, Alan Hodges Dec 2012

Economic Impacts Of The Kentucky Green Industry, Dewayne L. Ingram, Alan Hodges

Agriculture and Natural Resources Publications

The Green Industry has a significant impact on Kentucky’s economy. Green Industry enterprise owners, managers and employees should be aware of their economic impacts, and policy makers and other state leaders need to know the importance of this industry as potential laws, regulations and resource allocations are considered. This publication is intended to provide a brief summary of the 2007 economic impacts of the Green Industry in Kentucky.


Plant Community Composition And Structure Monitoring For Scotts Bluff National Monument, 2012 Annual Report, Isabel W. Ashton, Michael Prowatzke, Stephen K. Wilson Dec 2012

Plant Community Composition And Structure Monitoring For Scotts Bluff National Monument, 2012 Annual Report, Isabel W. Ashton, Michael Prowatzke, Stephen K. Wilson

United States National Park Service: Publications

Executive Summary

the last remnants of native mixed-grass prairie in the region. The Northern Great Plains Inventory & Monitoring Network (NGPN) surveyed 8 long-term monitoring plots in Scotts Bluff National Monument in 2012 as part of an effort to better understand the condition of plant communities in the park. We measured plant diversity and cover, estimated tree and shrub density, looked for the presence of exotic species that are of concern to park management, and evaluated the amount of human and natural disturbance at all plots. This effort was the second year in a multiple-year venture to document the current …


Dna Technology In Court, Dan E. Krane Dec 2012

Dna Technology In Court, Dan E. Krane

Biological Sciences Faculty Publications

No abstract provided.


Are Twitter Users Equal In Predicting Elections? A Study Of User Groups In Predicting 2012 U.S. Republican Primaries, Lu Chen, Wenbo Wang, Amit P. Sheth Dec 2012

Are Twitter Users Equal In Predicting Elections? A Study Of User Groups In Predicting 2012 U.S. Republican Primaries, Lu Chen, Wenbo Wang, Amit P. Sheth

Kno.e.sis Publications

Existing studies on predicting election results are under the assumption that all the users should be treated equally. However, recent work [14] shows that social media users from different groups (e.g., “silent majority” vs. “vocal minority”) have significant differences in the generated content and tweeting behavior. The effect of these differences on predicting election results has not been exploited yet. In this paper, we study the spectrum of Twitter users who participate in the on-line discussion of 2012 U.S. Republican Presidential Primaries, and examine the predictive power of different user groups (e.g., highly engaged users vs. lowly engaged users, right-leaning …


N-Glycosylation Dictates Proper Processing Of Organic Anion Transporting Polypeptide 1b1, Juan Yao, Weifang Hong, Jiujiu Huang, Kai Zhan, Hong Huang, Mei Hong Dec 2012

N-Glycosylation Dictates Proper Processing Of Organic Anion Transporting Polypeptide 1b1, Juan Yao, Weifang Hong, Jiujiu Huang, Kai Zhan, Hong Huang, Mei Hong

School of Information Faculty Publications

Organic anion transporting polypeptides (OATPs) have been extensively recognized as key determinants of absorption, distribution, metabolism and excretion (ADME) of various drugs, xenobiotics and toxins. Putative N-glycosylation sites located in the extracellular loops 2 and 5 is considered a common feature of all OATPs and some members have been demonstrated to be glycosylated proteins. However, experimental evidence is still lacking on how such a post-translational modification affect the transport activity of OATPs and which of the putative glycosylation sites are utilized in these transporter proteins. In the present study, we substituted asparagine residues that are possibly involved in N-glycosylation with …


Characterization And Epidemiology Of Soybean Vein Necrosis Associated Virus, Jing Zhou Dec 2012

Characterization And Epidemiology Of Soybean Vein Necrosis Associated Virus, Jing Zhou

Graduate Theses and Dissertations

Soybean vein necrosis disease (SVND) is widespread in major soybean-producing areas in the U.S. The typical disease symptoms exhibit as vein clearing along the main vein, which turn into chlorosis or necrosis as season progresses. Double-stranded RNA isolation and shot gun cloning of symptomatic tissues revealed the presence of a new tospovirus, provisionally named as Soybean vein necrosis associated virus (SVNaV). The presence of the virus has been confirmed in 12 states: Arkansas, Illinois, Missouri, Kansas, Tennessee, Kentucky, Mississippi, Maryland, Delaware, Virginia and New York. Symptomatic samples collected from eight states (AR, IL, MO, MS, KS, TN, MD and DE), …


Family Cancer History And Pedigrees As A Public Health Intervention For Promoting Health And Preventing Prostate Cancer In African American Men, Holisa Wharton Dec 2012

Family Cancer History And Pedigrees As A Public Health Intervention For Promoting Health And Preventing Prostate Cancer In African American Men, Holisa Wharton

All Dissertations

ABSTRACT
Prostate cancer is the most common cancer diagnosed in men and the second leading cause of cancer death among men in the United States. African-American men have substantially higher prostate cancer incidence and mortality than European-American men. It is unclear whether this incidence is due to acquired DNA changes (sporadic cancer) or if germline Mendelian genetics/genomics (inherited cancer) is the source of this health disparity. To explore this cause, the focus of this dissertation paper is family health history and hereditary prostate cancer. A family history tool is the most commonly used predictive instrument for hereditary prostate cancer. The …


Regulation Of The Lipid Raft Localization Of The Gal/Galnac Lectin, An Adhesin On The Surface Of The Human Protozoan Parasite, Entamoeba Histolytica, Amanda Goldston Dec 2012

Regulation Of The Lipid Raft Localization Of The Gal/Galnac Lectin, An Adhesin On The Surface Of The Human Protozoan Parasite, Entamoeba Histolytica, Amanda Goldston

All Dissertations

Lipid rafts, sterol- and sphingolipid-rich membrane microdomains, have been shown to control virulence in a variety of parasites including Entamoeba histolytica, an intestinal parasite that causes dysentery and liver abscess. Parasite cell surface receptors, such as the Gal/GalNAc lectin, facilitate attachment to host cells and extracellular matrix. The Gal/GalNAc lectin binds to galactose or N-acetylgalactosamine residues on host components, and is composed of heavy (Hgl), intermediate (Igl), and light (Lgl) subunits. Although Igl is constitutively localized to lipid rafts, Hgl and Lgl transiently associate with this compartment in a cholesterol-dependent fashion. Exposure to bonafide Gal/GalNAc lectin ligands is associated with …


The Fall Of "Augustinian Adam": Original Fragility And Supralapsarian Purpose, John Schneider Dec 2012

The Fall Of "Augustinian Adam": Original Fragility And Supralapsarian Purpose, John Schneider

University Faculty Publications and Creative Works

This essay is framed by conflict between Christianity and Darwinian science over the history of the world and the nature of original human personhood. Evolutionary science narrates a long prehuman geological and biological history filled with vast amounts, kinds, and distributions of apparently random brutal and pointless suffering. It has also unveiled an original human person with animal psychosomatic heredity. This narrative seems to discredit Christianity's (Augustinian) metanarrative of the Fall-Paradise Lost and Paradise Regained. The author contends that the Augustinian story and its character of Adam are implausible, anyway, for reasons of theology and apologetics. He proposes that Christians …


Quintessence Of Dust: Cognitive Neuroscience And An Actor's Process, Jason Christopher Davis Dec 2012

Quintessence Of Dust: Cognitive Neuroscience And An Actor's Process, Jason Christopher Davis

Dissertations, Masters Theses, Capstones, and Culminating Projects

This thesis examines theories provided by cognitive neuroscience and applies them to an actor’s process. In particular, this research addresses the subjectivity and intentionality of our consciousness and special as-if states of consciousness, supported by the work of John Searle and Antonio Damasio. The phenomenal feeling of character-model control is discussed and supported by the work of Thomas Metzinger. The paper also considers our relative understanding of mirror neurons and specifically their function in relation to intersubjectivity and their use for an actor’s creation and conveyance of character in rehearsal and performance. It examines Stanislavsky’s notion of emotional memory and …


Characterization Of Fhua 104/149c: A Double Cysteine Fhua Mutant With Normal Binding And Diminished Transport, Ada K. Hagan Dec 2012

Characterization Of Fhua 104/149c: A Double Cysteine Fhua Mutant With Normal Binding And Diminished Transport, Ada K. Hagan

Electronic Theses and Dissertations

Iron is an essential element for most bacteria and is commonly acquired by siderophores, molecules secreted under iron restricted environment to bind ferric iron. Gram negative cells actively uptake these complexes via outer membrane-transport proteins such as FhuA in Escherichia coli. Structural analysis of receptors revealed a conserved β-barrel occluded by an N-terminal plug domain. The cell membrane TonB/ExbB/ExbD complex presumably supplies energy via interaction between the FhuA N-terminal TonB box and the C-terminal domain of TonB. In order to better understand the mechanism of action the FhuA mutant 104/149C, tethering the central β-strands 4 and 6 of the …


An Analysis Of Human Disturbance To Rocky Intertidal Communities Of San Luis Obispo County, Grant Tyler Waltz Dec 2012

An Analysis Of Human Disturbance To Rocky Intertidal Communities Of San Luis Obispo County, Grant Tyler Waltz

Master's Theses

ABSTRACT

An Analysis Of Human Disturbance To Rocky Intertidal Communities Of San Luis Obispo County

Grant Tyler Waltz

The number of coastal areas open to public access in California and San Luis Obispo County is increasing due to the acquisition by California State Parks of land previously owned by private entities. For example, California State Parks acquired property from the Hearst Corporation in 2005, which included 18 miles of coastline. California State Parks is responsible for providing public access in these newly acquired areas and also for maintaining the health of the natural systems found on these properties. Part of …


Effect Of Rising Temperature Due To Ozone Depletion On The Dynamics Of A Prey-Predator System: A Mathematical Model, O. P. Misra, Preety Kalra Dec 2012

Effect Of Rising Temperature Due To Ozone Depletion On The Dynamics Of A Prey-Predator System: A Mathematical Model, O. P. Misra, Preety Kalra

Applications and Applied Mathematics: An International Journal (AAM)

It is well recognized that the greenhouse gas such as Chlorofluoro Carbon (CFC) is responsible directly or indirectly for the increase in the average global temperature of the Earth. The presence of CFC is responsible for the depletion of ozone concentration in the atmosphere due to which the heat accompanied with the sun rays are less absorbed causing increase in the atmospheric temperature of the Earth. The increase in the temperature level directly or indirectly affects the dynamics of interacting species systems. Therefore, in this paper a mathematical model is proposed and analyzed using stability theory to asses the effects …


Graduate Internship Report- Selma High School, Jalisca Jean Thomason Dec 2012

Graduate Internship Report- Selma High School, Jalisca Jean Thomason

Agricultural Education: Graduate Internship Reports

This internship report addresses the quality criteria of an agricultural education program and includes the supporting documents to meet the requirements of the California Department of Education specific to Selma High School. This document and the supporting evidence is intended to meet the requirements to obtain maximum funding for the Ag Incentive Grant.


Foliar Applied Urea Nitrogen Metabolism In Warm-Season Turfgrass Under Salinity Stress, Nicholas Menchyk Dec 2012

Foliar Applied Urea Nitrogen Metabolism In Warm-Season Turfgrass Under Salinity Stress, Nicholas Menchyk

All Dissertations

The most widely used foliar nitrogen (N) source for warm-season turfgrass and agriculture is urea [(NH2)2CO], due to its low cost, high percentage of N (46% by mass), and completely soluble nature. Since urea is a soluble N source, it is commonly utilized as a foliar N source when tank mixed with pesticides in warm-season turfgrass management. The N in urea is not directly available to the plant until it is hydrolyzed into ammonia by the enzyme urease in the cytosol. Urease is a nickel (Ni2+) dependant enzyme that is ubiquitous in plants. Its main biochemical function is the hydrolysis …


The Effects Of Temperature On Energy Utilization By Marine Invertebrate Larvae, Elizabeth Whitehill Dec 2012

The Effects Of Temperature On Energy Utilization By Marine Invertebrate Larvae, Elizabeth Whitehill

All Dissertations

Most ectothermic organisms are larger when reared at lower temperatures and temperature can greatly affect an organism's physiological state, so understanding how temperature affects larval size and quality can provide insight into how the larval thermal environment affects post-metamorphic success. Because quality is often defined in terms of size and energy content, I focused on how temperature affects energy utilization by larvae and how differences in energy accumulation and utilization may carry over into the juvenile stage. Marine invertebrate larvae are often classified into two groups: larvae from smaller eggs that must obtain food from the environment in order to …


Exercise Strengthens Circadian Clocks, Mary E. Harrington Dec 2012

Exercise Strengthens Circadian Clocks, Mary E. Harrington

Psychology: Faculty Publications

No abstract provided.


Effects Of Slash Pile Burning After Restoring Conifer- Encroached Aspen, Christa M. Dagley, John-Pascal Berrill, Stephanie Coppeto, Kyle Jacobson Dec 2012

Effects Of Slash Pile Burning After Restoring Conifer- Encroached Aspen, Christa M. Dagley, John-Pascal Berrill, Stephanie Coppeto, Kyle Jacobson

Aspen Bibliography

Removal of conifers encroaching aspen stands has been advocated and is being practiced in the Lake Tahoe Basin (EIP Project #10080: Aspen Community Restoration Projects). In remote and roadless areas, thinning of conifers is generating large volumes of wood and pile burning is currently being implemented to handle this biomass on site. However, the effects of pile burning on aspen are unknown, and there is an urgent need for guidelines to support design of thinning treatment prescriptions; specifically burn pile size and safe distances from live aspen trees of any size to prevent injury.


Impaired Skeletal Muscle Blood Flow Control With Advancing Age In Humans: Attenuated Atp Release And Local Vasodilation During Erythrocyte Deoxygenation, Brett S. Kirby, Anne R. Crecelius, Wyatt F. Voyles, Frank A. Dinenno Dec 2012

Impaired Skeletal Muscle Blood Flow Control With Advancing Age In Humans: Attenuated Atp Release And Local Vasodilation During Erythrocyte Deoxygenation, Brett S. Kirby, Anne R. Crecelius, Wyatt F. Voyles, Frank A. Dinenno

Health and Sport Science Faculty Publications

Rationale: Skeletal muscle blood flow is coupled with the oxygenation state of hemoglobin in young adults, whereby the erythrocyte functions as an oxygen sensor and releases ATP during deoxygenation to evoke vasodilation. Whether this function is impaired in humans of advanced age is unknown.

Objective: To test the hypothesis that older adults demonstrate impaired muscle blood flow and lower intravascular ATP during conditions of erythrocyte deoxygenation.

Methods and Results: We showed impaired forearm blood flow responses during 2 conditions of erythrocyte deoxygenation (systemic hypoxia and graded handgrip exercise) with age, which was caused by reduced local vasodilation. In young adults, …


Arkansas Soybean Performance Tests 2012, R. D. Bond, D. G. Dombek, J. A. Still, R. M. Pryor Dec 2012

Arkansas Soybean Performance Tests 2012, R. D. Bond, D. G. Dombek, J. A. Still, R. M. Pryor

Arkansas Agricultural Experiment Station Research Series

Soybean variety and strain performance tests are conducted each year in Arkansas by the University of Arkansas System Division of Agriculture Arkansas Crop Variety Improvement Program. The tests provide information to companies developing varieties and/or marketing seed within the state, and aid the Arkansas Cooperative Extension Service in formulating variety recommendations for soybean producers.


Optimizing Aplysia Californica's Living Conditions, Ruiying Xu Dec 2012

Optimizing Aplysia Californica's Living Conditions, Ruiying Xu

Intersections Fall 2020

The marine mollusk Aplysia californica is an important model organism for neuroscience research. In laboratory aquaria, animal waste may accumulate and harm animals unless water is replaced frequently. To keep animals healthy for longer, we have designed a marine environment that replicates the natural nitrogen cycle. Our animals' holding tanks have two compartments: a main compartment for animals and a refugium for macroalgae. We are studying whether ammonia and nitrate derived from animal waste cause illness in Aplysia, and whether macroalgae can sequester nitrates and reverse illness. We measured increases in nitrate and ammonia in the absence of macroalgae. We …


Determination Of Potential Azotobacter Vinelandii Bacteriophage Gene Sequences: A Bioinformatics Approach, Anish Reddy, Sarah Bagby Dec 2012

Determination Of Potential Azotobacter Vinelandii Bacteriophage Gene Sequences: A Bioinformatics Approach, Anish Reddy, Sarah Bagby

Intersections Fall 2020

Microbial communities play a key role in shaping many diverse ecosystems through their biogeochemical contributions. These communities comprise not only bacteria and archaea but also their viruses, whose reproduction profoundly affects host cell biology. While many bacterial species have been well characterized, the challenges of isolation and sequencing have hampered the study of environmental viruses such as bacteriophages. The model organism Azotobacter vinelandii is a common nitrogen-fixing soil bacterium. To our knowledge, no Azotobacter phages currently exist in culture. However, modern bioinformatic and database approaches can be used to identify the metagenomic sequences that may derive from bacteriophages that infect …


Changes In Meiotic Crossover Distribution And Frequency In Response To Chromosome Structural Variants, Christiana Wang, Nicole Crown Dec 2012

Changes In Meiotic Crossover Distribution And Frequency In Response To Chromosome Structural Variants, Christiana Wang, Nicole Crown

Intersections Fall 2020

Meiosis is an important mechanism that generates genetic variation for sexually reproducing organisms through recombination. In order for an organism to successfully propagate its genetic material from one generation to the next, its genome must be properly delivered as gametes. Meiotic crossing over of DNA ensures proper homolog segregation by repairing programmed double-stranded breaks. Meiotic defects caused by chromosome structural variants are detrimental to reproduction. During the interchromosomal effect, heterozygous inversions suppress crossing over between affected chromosomes while increasing crossing over between normal chromosome pairs. These defects in chromosomal dynamics trigger the pachytene checkpoint, leading to a delay in prophase …


Behavioral Observations Surrounding A Diet Change Of Zoo-Housed Matschie's Tree Kangaroos (Dendrolagus Matschiei), Sarah Miller, Noah T. Dunham, Diana Koester Dec 2012

Behavioral Observations Surrounding A Diet Change Of Zoo-Housed Matschie's Tree Kangaroos (Dendrolagus Matschiei), Sarah Miller, Noah T. Dunham, Diana Koester

Intersections Fall 2020

The diet of zoo-housed animals has significant implications to many aspects of each species' health and survival. A recent study revealed the diet of free-ranging Matschie's tree kangaroos (Dendrolagus matschiei) to be mostly browse-focused, including plants like leaves, ferns, and orchids. Prior to those findings, zoo-housed tree kangaroos were fed diets, mostly biscuit-based, that differ vastly from that of free-ranging tree kangaroos possibly contributing to widespread issues within zoos concerning obesity and low reproductive success. The Cleveland Metroparks Zoo (CMZ) houses two Matschie tree kangaroos which, in 2019, underwent a significant diet change from a more traditional, baseline, biscuit-heavy diet …