Digital Commons Network^™

Climate Change And Forest Diseases, R. N. Sturrock, S. J. Frankel, A. V. Brown, P. E. Hennon, J. T. Kliejunas, K. J. Lewis, J. J. Worrall, A. J. Woods

United States Department of Agriculture, Forest Service / University of Nebraska-Lincoln: Faculty Publications

As climate changes, the effects of forest diseases on forest ecosystems will change. We review knowledge of relationships between climate variables and several forest diseases, as well as current evidence of how climate, host and pathogen interactions are responding or might respond to climate change. Many forests can be managed to both adapt to climate change and minimize the undesirable effects of expected increases in tree mortality. We discuss four types of forest and disease management tactics – monitoring, forecasting, planning and mitigation – and provide case studies of yellow-cedar decline and sudden aspen decline to illustrate how forest diseases …

Patterns Of Morphological Variation Amongst Semifossorial Shrews In The Highlands Of Guatemala, With The Description Of A New Species (Mammalia, Soricomorpha, Soricidae), Neal Woodman

United States Geological Survey: Staff Publications

Members of the Cryptotis goldmani group of small-eared shrews (Mammalia, Soricomorpha, Soricidae) represent a clade within the genus that is characterized by modifications of the forelimb that include broadened forefeet, elongated and broadened foreclaws, and massive humeri with enlarged processes. These modifications are consistent with greater adaptation to their semifossorial habits than other members of the genus. The species in this group occur discontinuously in temperate highlands from southern Tamaulipas, Mexico, to Honduras. In Guatemala, there are three species: the relatively widespread Cryptotis goodwini and two species (Cryptotis lacertosus, Cryptotis mam) endemic to highland forests in the Sierra …

Genetic And Environmental Influences On Leaf Phenology And Cold Hardiness Of Native And Introduced Riparian Trees, Jonathan M. Friedman, James E. Roelle, Brian S. Cade

United States Geological Survey: Staff Publications

To explore the roles of plasticity and genetic variation in the response to spatial and temporal climate variation, we established a common garden consisting of paired collections of native and introduced riparian trees sampled along a latitudinal gradient. The garden in Fort Collins, Colorado (latitude 40.6°N), included 681 native plains cottonwood (Populus deltoides subsp. monilifera) and introduced saltcedar (Tamarix ramosissima, T. chinensis and hybrids) collected from 15 sites at 29.2–47.6°N in the central United States. In the common garden both species showed latitudinal variation in fall, but not spring, leaf phenology, suggesting that the latitudinal gradient …

Interpreting Tree Responses To Thinning And Fertilization Using Tree-Ring Stable Isotopes, J. Renée Brooks, Alan K. Mitchell

United States Environmental Protection Agency: Publications

Carbon sequestration has focused renewed interest in understanding how forest management affects forest carbon gain over timescales of decades, and yet details of the physiological mechanisms over decades are often lacking for understanding long-term growth responses to management.

Here, we examined tree-ring growth patterns and stable isotopes of cellulose (δ¹³C_cell and δ¹⁸O_cell) in a thinning and fertilization controlled experiment where growth increased substantially in response to treatments to elucidate physiological data and to test the dual isotope approach for uses in other locations.

δ¹³C_cell and δ¹⁸O_cell results …

Remediation Of Napl Source Zones: Lessons Learned From Field Studies At Hill And Dover Afb, John E. Mccray, Geoffrey R. Tick, James W. Jawitz, John S. Gierke, Mark L. Brusseau, Ronald W. Falta, Robert C. Knox, David A. Sabatini, Michael D. Annable, Jeffrey H. Harwell, A. Lynn Wood

United States Environmental Protection Agency: Publications

Innovative remediation studies were conducted between 1994 and 2004 at sites contaminated by nonaqueous phase liquids (NAPLs) at Hill and Dover AFB, and included technologies that mobilize, solubilize, and volatilize NAPL: air sparging (AS), surfactant flushing, cosolvent flooding, and flushing with a complexingsugar solution. The experiments proved that aggressive remedial efforts tailored to the contaminant can remove more than 90% of the NAPL-phase contaminant mass. Site-characterization methods were tested as part of these field efforts, including partitioning tracer tests, biotracer tests, and mass-flux measurements. A significant reduction in the groundwater contaminant mass flux was achieved despite incomplete removal of the …

Real Estate And Construction Industry Developments - 2011/12; Audit Risk Alerts, American Institute Of Certified Public Accountants (Aicpa)

Industry Guides (AAGs), Risk Alerts, and Checklists

No abstract provided.

Learning To Live Together: Mutualism Between Self-Splicing Introns And Their Hosts, Marlene Belfort, Venkata R. Chalamcharla, David R. Edgell

Biological Sciences Faculty Scholarship

Group I and II introns can be considered as molecular parasites that interrupt protein-coding and structural RNA genes in all domains of life. They function as self-splicing ribozymes and thereby limit the phenotypic costs associated with disruption of a host gene while they act as mobile DNA elements to promote their spread within and between genomes. Once considered purely selfish DNA elements, they now seem, in the light of recent work on the molecular mechanisms regulating bacterial and phage group I and II intron dynamics, to show evidence of co-evolution with their hosts. These previously underappreciated relationships serve the co-evolving …

Design And Synthesis Of Novel Agrofungicides Based On Naturally Occurring Pbdes, Robert Alexander Smith

Electronic Theses and Dissertations

Cyanobacterial symbionts of Indo Pacific marine sponges, e.g. Dysidea sp., produce hydroxylated (OH-) polybrominated diphenyl ethers (PDBEs) which likely function as chemical deterrents owing to their antifungal and antibacterial properties. Limiting the therapeutic potential and agricultural use of these antimicrobial natural products are the negative connotations associated with non hydroxylated anthropogenic PBDEs. Anthropogenic PBDEs are pervasive global pollutants used as flame retardant additives in many household goods, e.g. furniture, textiles, and electronics. These molecules have a propensity to bioaccumulate in living organisms, they easily traverse the trophic food chains, they are readily passed from mother to offspring, and many of …

Avoiding Proteolysis During Protein Chromatography., Barry Ryan

Books/Book Chapters/ Proceedings

All cells contain proteases which effect catalytic hydrolysis of the peptide bond between amino acids in the protein backbone. Typically, proteinases are prevented from non-specific proteolysis by regulation and physical separation into different sub-cellular compartments; however, this segregation is not retained during cell lysis to release a protein of interest. Prevention of proteolysis during protein purification often takes the form of a two-pronged approach; firstly inhibition of proteolysis in situ, followed by the separation of the protease from the protein of interest via chromatographical purification. Proteinase inhibitors are routinely used to limit the effect of the proteinases before they are …

In Situ Generated Colloid Transport Of Cu And Zn In Reclaimed Mine Soil Profiles Associated With Biosolids Application, Jarrod O. Miller, Anastasios D. Karathanasis, Christopher J. Matocha

Plant and Soil Sciences Faculty Publications

Areas reclaimed for agricultural uses following coal mining often receive biosolids applications to increase organic matter and fertility. Transport of heavy metals within these soils may be enhanced by the additional presence of biosolids colloids. Intact monoliths from reclaimed and undisturbed soils in Virginia and Kentucky were leached to observe Cu and Zn mobility with and without biosolids application. Transport of Cu and Zn was observed in both solution and colloid associated phases in reclaimed and undisturbed forest soils, where the presence of unweathered spoil material and biosolids amendments contributed to higher metal release in solution fractions. Up to 81% …

Structure Of Acculturation Attitudes And Their Relationships With Personality And Psychological Adaptation: A Study With Immigrant And National Samples In Germany, Paul G. Schmitz, John W. Berry

Papers from the International Association for Cross-Cultural Psychology Conferences

This contribution deals with the structure of acculturation attitudes and their relationship with personality dimensions and psychological adaptation. Based on two German samples—an immigrant and a national one— evidence suggests that four independent factors are underlying acculturation styles as assessed with the Acculturation Attitudes Styles (AAS). Integration, Assimilation, Separation, and Marginalization are independent, lowly correlated constructs and represent distinct modes of coping with acculturation demands. Analyses also demonstrate that each acculturation factor shows a specific pattern of personality characteristics, including basic temperament dimensions, cognitive styles, coping, and components of emotional intelligence. Finally, the four acculturation styles can predict psychological adaptation …

Conflict Patterns Among Greek Couples: The Role Of Values, Self- Disclosure, And Relationship Satisfaction, Marianna Argiropoulou, Vassilis Pavlopoulos, Karen Quek

Papers from the International Association for Cross-Cultural Psychology Conferences

This study tested the assumption that self- and spouse reports on values, self-disclosure and satisfaction could predict conflict patterns, as proposed by Rusbult, Zembrodt, & Gunn’s (1982) Exit-Voice-Loyalty-Neglect typology. Participants were 133 married Greek couples. Results were generally consistent with expectations: Self- and spouse reports on satisfaction, self-disclosure and values were significant predictors of the use of the four conflict resolution strategies, to an extent that varied across conflict type, informant (self vs. spouse) and gender. Overall, husbands were more satisfied than wives. No differences were found at the mean level of selfdisclosure, or in the frequency and type of …

2011 Presentation Abstracts, Grand Valley State University

Academic Conference Fund Abstracts

No abstract provided.

Coupling In Vitro And In Vivo Paradigm Reveals A Dose Dependent Inhibition Of Angiogenesis Followed By Initiation Of Autophagy By C6-Ceramide, Rishipal R. Bansode, Mohamed Ahmedna, Kurt R. Svoboda, Jack N. Losso

Faculty Publications

The activity of N-hexanoyl-D-erythro-sphingosine, a C6-ceramide against angiogenesis was tested in vitro and in vivo. The effect of ceramide in inhibiting MCF-7 cancer cells was also determined. The aim of this study was to potentiate the effect of ceramide as an-ti-angiogenic compound that can regulate tumor induced angiogenesis. C6-ceramide inhibited vascular endothelial growth factor (VEGF)-induced human um-bilical vein endothelial cells (HUVEC) tube formation in a dose-dependent manner within 24 hours. Ceramide at concentrations between 12.5 and 25 μM inhibited the via-bility of MCF-7 cells and reduced VEGF-induced cell migration in 24 hours. At 50 μM, ceramide induced MCF-7 cell death …

Spatio-Temporal Analysis Of Crime Hotspots By Trajectories And Self-Organizing Maps, Marco Helbich, Julian Hagenauer, Michael Leitner

Faculty Publications

The exploration of spatial relationships between crime incidents, the socio-economic characteristics of neighborhoods, as well as physical and structural compositions of the urban landscape is an ongoing research issue in Geographic Information Science. Spatial data mining tools improve the ability to gain knowledge from geographic data and help to understand spatio-temporal processes that contribute to the presence or absence of criminal offenses. However, most of the currently available tools focus either on the spatial, the temporal, or a combination of both aspects. But crime has a spatial and temporal component in a multidimensional attribute space. Therefore, it is reasonable to …

Loma Linda Nurse - Vol. 19, No. 01, Loma Linda University School Of Nursing

Loma Linda Nurse

Contents

2 | From the dean: Marilyn Herrmann shares her thoughts

Features

4 | Michael Rettig’s journey of service

6 | Katty Joy French—in her own words

8 | Alumnus takes on prison reform in California

News

9 | LLUSN adds two new programs— Doctor of nursing practice and nurse anesthetist (MS)

Development

10 | Scholarship updates

11 | Giving beyond the checkbook

Alumni homecoming

12 | KJN Society Brunch honors friends

13 | LLUSN celebrates alumni and friends with homecoming weekend

14 | Honored classes celebrate during alumni homecoming

15 | A note from the alumni president

16 | …

The Gay Of The Land: Queer Ecology And The Literature Of The 1960s, Jill Elizabeth Anderson

Electronic Theses and Dissertations

In this dissertation I argue not only that queer ecology is a legitimate and important next step for ecocritics and queer theorists but also that its literary application does a great amount of good in exploring and dismantling the natural/unnatural binary and exposing the ecological impact of the choices humans make everyday. I take as my method a combination of queer and environmental theory and literary criticism, as well as the foundational queer ecocritical works and include important historical and political perspectives influencing the emergence of the environmental and gay and lesbian movements. Through this dissertation, I legitimize more recent …

Invasion Of Hurricane-Disturbed Scrub Communities On Barrier Islands In Mississippi: A Battle Between Native And Non-Native Ecosystem Engineers, Christine Annette Bertz

Electronic Theses and Dissertations

Some communities may resist invasion because they are dominated by ecosystem engineers. If these dominant species are removed by some catastrophic disturbance, they can be replaced by invasive species that will dramatically alter the ecosystem in a way that may prevent its recovery. I tested several hypotheses related to this idea within barrier island scrub communities dominated by Florida rosemary (Ceratiola ericoides Michx.). Hurricanes represent a major source of disturbance to coastal Florida rosemary communities, and individual rosemary shrubs in three populations recently impacted by major hurricanes were not protected from the storm surge at higher elevation. Unlike inland populations …

Large Margin Random Forests On Mixed Type Data, Sheng Liu

Electronic Theses and Dissertations

Incorporating various sources of biological information is important for biological discovery. For example, genes have a multi-view representation. They can be represented by features such as sequence length and physical-chemical properties. They can also be represented by pairwise similarities, gene expression levels, and phylogenetics position. Hence, the types vary from numerical features to categorical features. An efficient way of learning from observations with a multi-view representation of mixed type of data is thus important. We propose a large margin random forests classification approach based on random forests proximity. Random forests accommodate mixed data types naturally. Large margin classifiers are obtained …

Midwives Of Mississippi, Lane Noel

Electronic Theses and Dissertations

Across the United States as late as 1910, midwives delivered half of all babies. Their practice was primarily among women of white European descent and African American women of the South. The practice of midwifery was commonplace in Mississippi. Together, black midwives and white nurses would help to implement a new public healthcare structure in Mississippi during the 1920s. Records of the Mississippi State Board of Health together with letters from midwives and public health nurses' reports put midwives at the heart of the story of public health reform. Already held in high esteem by their own communities, midwives came …

Improving Sample Collection Of Trace Particles Of Mock Explosive On Nano Coated Sensor, Daniel Woldemichael Yebo

Electronic Theses and Dissertations

In protection against explosive-based terrorism, development and mass deployment of miniature sensors can play a tremendous role. In trace explosive detection, one of the challenges is bringing explosive vapor samples from the environment to the sensor element. Such collection of a selective and sufficient amount of air sample will enable the device detect the explosive at lower concentration. This can be done by adsorption of the explosive vapor on a substrate. This research implements the idea by developing a nano coated sensor on a lead zirconate titanate (PZT) substrate. The effects of varying the amount of polyethyleneimine in the nano …

Food And Identity: A Case Study Of Roman Soldiers And Native Civilians In Roman Britain, Aaron Michael Bobik

Electronic Theses and Dissertations

Food is a universal medium through which identity is expressed. In cultures both past and present, food represents a direct way to communicate many aspects of identity such as ethnicity, nationality, status, age, and gender. In archaeology, while the nutritional and economic roles of food have been a topic of study for decades, the relationship between food and identity is a research area largely in its infancy. In my thesis, I explore general aspects of identity in the past, and in particular, I utilize a case study of four archaeological sites (Segontium (Caernarfon), Portchester Castle, Wavendon Gate, and Dragonby) to …

Starved: Food Deserts In The Mississippi Delta, Novelette L. Brown

Electronic Theses and Dissertations

This thesis examines the impact of food deserts on obesity, and builds a case for additional research on rural food deserts independent from urban ones. The Mississippi Delta consistently presents the highest obesity rates within the state, yet both the third unhealthiest county (Quitman) and the healthiest (DeSoto) are located in that region. One of the reasons there is such a large discrepancy between the health rankings of DeSoto and Quitman counties is that DeSoto is contained within the Greater Memphis Metropolitan Area, but Quitman is entirely rural. Previous research has focused on the prevalence of urban food deserts and …

Effects Of Tornado Damage, Prescribed Fire, And Salvage Logging On Oak (Quercus Spp.) Saplings In Upland Oak Forests In Northern Mississippi, Jeffery B. Cannon

Electronic Theses and Dissertations

After European colonization and extensive logging folloby long periods of fire suppression, oak dominated forests, woodlands, and savannahs are being replaced by an unprecedented forest ecosystem. In Mississippi, these new forest systems are dominated in the mid- and understory by mesophytic species such as red maple (Acer rubrum L.) and sweetgum (Liquidambar styraciflua L.). Partial thinning of trees folloby prescribed fire can regenerate oaks in managed timber stands. A severe tornado occurred on a monitored oak stand in northern Mississippi. Of the damaged plots, some were treated with either prescribed fire or salvage logging or were left alone. I examined …

Fit Of The Tripartite Model With Residential Youth Referred For Externalizing Problems, Eu Gene Chin

Electronic Theses and Dissertations

The tripartite model of anxiety and depression (Clark & Watson, 1991) has received strong support among adult, adolescent, and child populations. Clinical samples of children and adolescents in these studies, however, have usually been referred for treatment of anxiety and depression. This study investigated the fit of the tripartite model for children and adolescents in a large, inpatient facility who were referred primarily for externalizing problems. Structural Equation Modeling was used to test the tripartite model relationship between negative affect, positive affect, and mood symptoms. Multiple fit indices were used to provide a reliable and conservative evaluation of the model. …

The Influences Of Gender And Race On The Attachment Styles Within A Criminal Population, Morgan Litchfield Bryant

Electronic Theses and Dissertations

This study utilizes tenets of attachment theory to examine how patterns of relating to parental figures vary according to the race and gender of subjects residing in a correctional facility. The study can perhaps influence rehabilitation services within the prison system and modify anti-recidivism programs attended by individuals released from a correctional facility. Second year doctoral students originally collected the data. The participants in the study were given the Adult Scale of Parental Attachment (ASPA) and a general questionnaire in an effort to gather information regarding race, gender, and patterns of relating. The participants were above the age of 18, …

Good Neighbors: Agents Of Change In The New Rural South, 1900 To 1940, Thomas Wayne Copeland

Electronic Theses and Dissertations

This work paints an intimate portrait of rural people who lived in the hill counties of northeast Mississippi and southwest Arkansas between 1900 and 1940. Howard County, Arkansas and Union County, Mississippi serve as the representative counties for each hill-country region. Howard County is located in the foothills of the Ouachita Mountains, and Union County is located in the foothills of the Appalachian Mountains. This study identifies who in the rural communities was most responsible for bringing positive changes to their communities, questions what motivated their efforts, and evaluates their successes and failures. To this end, the work first examines …

The Heavy Hand Of Government: An Economic Study Of Obesity, Kanybek Imanakovich Sagynbekov

Electronic Theses and Dissertations

Although there is extensive theoretical and empirical coverage of the incentive effect of an income tax on labor supply in the economics literature, there is no study of the secondary behavioral effects of an income tax. In this thesis, I explore the relationship among income, marginal income tax, and body weight. Namely, I show that under general conditions the Engel curve for the optimal weight is an inverted U-shaped function and the effect of the marginal income tax upon weight is non-linear. The empirical investigation uses two datasets: a panel dataset with 459 state-level observations for US states from 1992 …

The Relationship Of Teacher Efficacy, Teacher Experience, And Teacher Grade Level Within The Implementation Process Of Behavioral Interventions, Irene Walton Turnage

Electronic Theses and Dissertations

This study examined the relationship between teacher efficacy, years of teaching experience, and grade level taught in three school districts in north Mississippi. The study used a mixed method research design that included a QUAN?qual process for data analysis. As part of the design, quantitative data collection was the priority method for the study folloby qualitative data collection to continue to explore the results from the quantitative section. For the quantitative portion of the study, participants included 123 elementary, middle, and high school teachers who completed the Teachers’ Sense of Efficacy Scale to measure teacher efficacy. For the qualitative portion …

Pharmacokinetic Evaluation Of A Novel Compound, Sn79, A Putative Sigma-2 Receptor Antagonist, By Intravenous And Oral Administration In Rats, Harsha Vinnakota

Electronic Theses and Dissertations

Considering the alarming rates at which substance drug abuse, especially cocaine, is increasing in today's society, there is a lot of impetus on the development of medications that can effectively help alleviate its toxicity and addiction. The affinity of cocaine to sigma receptors (sigma-1 and sigma-2) rendered the hypothesis that blocking sigma receptors could be a possible mechanism to attenuate cocaine-induced toxicity and addiction. In this view, SN79, a synthetic compound with selectivity to both sigma-1 and sigma-2 receptors garnered our attraction for its use as an antagonist. This dissertation encompasses detailed investigation of SN79 from drug discovery and development …