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2012

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Real-Time Quantitative Pcr For Evaluation Of Mutans Streptococci And Dental Caries, Chanika Manmontri Jan 2012

Real-Time Quantitative Pcr For Evaluation Of Mutans Streptococci And Dental Caries, Chanika Manmontri

All ETDs from UAB

Mutans streptococci (MS), e.g., Streptococcus mutans (Sm) and Streptococcus sobrinus (Ss), are associated with dental caries. Quantification of MS has been shown to predict caries risk. A new technology using PCR may streamline quantification compared to traditional culture methods. Purpose: To use real-time quantitative PCR (qPCR) and standard plate counting (SPC) for detection and quantification of levels of Sm, Ss and total streptococci (TS) in clinical samples from high-caries-risk children with no regular access to dental care and to study correlation of these bacterial levels and ratios to caries prevalence. Methods: Saliva and plaque samples were collected from school-aged children …

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Localization Of Proteins Involved In Trafficking In Frog And Mouse Retina, Amie Marsh Jan 2012

Localization Of Proteins Involved In Trafficking In Frog And Mouse Retina, Amie Marsh

All ETDs from UAB

The connecting cilium serves as the major route for protein transport from the inner to outer segment of photoreceptor cells. The hypothesis that all Congenital Stationary Night Blindness (CSNB) rhodopsin mutants travel properly to the rod outer segment in Xenopus laevis will be tested by preparing transgenic X. laevis expressing a rhodopsin mutation found in human CSNB, A295V. In addition, probing for the existence of potential proteins involved in regulating rhodopsin trafficking and monitoring their localization will contribute to a better understanding of the underlying pathway of intracellular photoreceptor trafficking.

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An Examination Of The Relationship Between The External Environment And Care Coordination, Olena Mazurenko Jan 2012

An Examination Of The Relationship Between The External Environment And Care Coordination, Olena Mazurenko

All ETDs from UAB

This study addressed a gap in the care coordination literature by exploring the factors predictive of care coordination, with particular attention to the external environment. The first paper of this dissertation conducted a systematic review of empirical studies that looked at the predictors of care coordination. Based on the 22 papers that fulfilled the inclusion criteria, the evidence to support the relationships between care coordination and factors that are predictive of care coordination was shown to be weak to moderate depending on the types of factors you look at. This study has revealed a significant inconsistency in how predictors of …

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The Effects Of Venlafaxine On Functional Recovery Following Spinal Cord Injury, Don E. Mccormick Jan 2012

The Effects Of Venlafaxine On Functional Recovery Following Spinal Cord Injury, Don E. Mccormick

All ETDs from UAB

Spinal cord injury (SCI) can significantly alter a person's physical and psychological health over their lifetime. Depression in persons with SCI is often treated with antidepressants which alter serotonergic and adrenergic signaling, both regulators of plasticity. However, the effects of antidepressants functional recovery after SCI have never been evaluated. Therefore, we hypothesize that antidepressant therapy would alter functional recovery and neuropathic pain behaviors in a SCI rodent model. The aim of this study was to evaluate the effects of venlafaxine (VEN) administration on functional recovery in the rehabilitation setting using a SCI rodent model. Adult male Sprague-Dawley rats received a …

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A Case Study Of Second-Grade Teachers' Comprehension Instruction, Rebecca Burdette Mckay Jan 2012

A Case Study Of Second-Grade Teachers' Comprehension Instruction, Rebecca Burdette Mckay

All ETDs from UAB

A CASE STUDY OF SECOND-GRADE TEACHERS' COMPREHENSION INSTRUCTION REBECCA BURDETTE MCKAY EARLY CHILDHOOD EDUCATION ABSTRACT The dilemma of reconciling developmentally appropriate, constructivist reading instruction with mandated high-stakes tests was confronted by four second-grade teachers through their selection of two active professional development methods. To continue and deepen their use of an interactive model of reading focused on comprehension, the teachers worked as a professional community to renegotiate and reconstruct their professional knowledge and adapt their pedagogy to the school context. The goal of this research was to investigate how the teachers described their comprehension instruction as well as how they …

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Relationship Between Religiosity, Violent Behavior And Gang Activity In Economically Disadvantaged Adolescents, David Mckenzie Jan 2012

Relationship Between Religiosity, Violent Behavior And Gang Activity In Economically Disadvantaged Adolescents, David Mckenzie

All ETDs from UAB

RELATIONSHIP BETWEEN RELIGIOSITY, VIOLENT BEHAVIOR AND GANG ACTIVITY AMONG ECONOMICALLY DISADVANTAGED ADOLESCENTS DAVID McKENZIE HEALTH EDUCATION & HEALTH PROMOTION ABSTRACT Few studies have examined the relationship between religiosity, violent behavior and gang activity in disadvantaged youth. This research study analyzed data from a population of low-income adolescents in Mobile, Alabama. The research objectives were to assess the relationship between adolescent religiosity and involvement in violent behavior and gang activity, and to determine if there were gender differences between boys and girls regarding religiosity, violent behavior and gang activity. It was hypothesized that there would be an inverse relationship between religiosity …

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A Study Of Early Adopters Of Innovation, John B. Mcwhorter Jan 2012

A Study Of Early Adopters Of Innovation, John B. Mcwhorter

All ETDs from UAB

This research study focused on identification of environmental and organizational variables that influence the rate of adoption of administrative innovation in organizations, and specifically hospitals that have adopted nurse magnet programs. The study identified both organizational and environmental factors as statistically significant among early adopters of magnet programs in hospitals, with organizational influences stronger than environmental influences in determining the rate of adoption of innovation. Organizational complexity, size, control of domain, presence of a competitor, and available resources were the factors identified as influencing the early adoption of innovation among hospitals.

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Genome-Wide Dna Methylation Changes During Breast Tumorigenesis, Natalie E. Mitchell Jan 2012

Genome-Wide Dna Methylation Changes During Breast Tumorigenesis, Natalie E. Mitchell

All ETDs from UAB

Neoplastic reprogramming generates cancerous cells from normal derivatives, enabling researchers to create a model of the early stages of oncogenesis and analyze molecular changes in real-time. Aberrations in DNA methylation are considered a major mechanism contributing to the acquisition and maintenance of a cancerous phenotype; however, little research exists regarding gene-specific changes in DNA methylation during the transition from a normal to neoplastic cell. Human mammary epithelial cells (HMECs) underwent neoplastic transformation through the addition of three defined genetic elements to generate one line of semi-transformed, pre-malignant cells (SHMECs) and two separate lines of fully transformed, malignant cells (THMECs). We …

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Environmental Enrichment Recouples Histone Methylation In The Hippocampus To Restore Cognition In Aging, Sarah Jean Morse Jan 2012

Environmental Enrichment Recouples Histone Methylation In The Hippocampus To Restore Cognition In Aging, Sarah Jean Morse

All ETDs from UAB

It is hypothesized that age-related memory deficits arise in part due to altered gene transcription within the hippocampus. These aberrations in gene transcription can lead to alterations in the induction of synaptic plasticity and subsequently interrupt the process of memory formation. Histone methylation-mediated chromatin remodeling mechanisms have recently emerged as crucial regulators of gene transcription in the hippocampus during memory formation. In the present study, we examined the contributions of histone methylation to cognitive deficits and transcriptional aberrations in the hippocampus throughout aging. We found that aging is associated with reduced histone acetylation and an increase in tri-methylation of histone …

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Screening For Medical Referral: Determining Variables That Influence Accuracy, Heather Ellis Mount Jan 2012

Screening For Medical Referral: Determining Variables That Influence Accuracy, Heather Ellis Mount

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SCREENING FOR MEDICAL REFERRAL: DETERMINING VARIABLES THAT INFLUENCE ACCURACY HEATHER E. MOUNT DOCTOR OF SCIENCE IN PHYSICAL THERAPY ABSTRACT Background: Screening for medical referral is essential to autonomous practice; however, no studies have examined the medical screening abilities of physical therapists in various settings. Objective: The purpose of this study was to determine if physical therapists in various practice settings could appropriately screen for medical referral, given brief clinical vignettes. Methods: A Delphi study was performed to enhance the content validity of the vignettes. After reviewing the vignettes, survey participants determined if they would provide intervention, provide intervention and refer, …

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Permutation Notations For The Exceptional Weyl Group F4, Patricia Cahn, Ruth Haas, Aloysius G. Helminck, Juan Li, Jeremy Schwartz Jan 2012

Permutation Notations For The Exceptional Weyl Group F4, Patricia Cahn, Ruth Haas, Aloysius G. Helminck, Juan Li, Jeremy Schwartz

Mathematics Sciences: Faculty Publications

This paper describes a permutation notation for the Weyl groups of type F4 and G2. The image in the permutation group is presented as well as an analysis of the structure of the group. This description enables faster computations in these Weyl groups which will prove useful for a variety of applications.

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A New Qcd Effect: The Shrinking Radius Of Hadrons, Tamar Friedmann Jan 2012

A New Qcd Effect: The Shrinking Radius Of Hadrons, Tamar Friedmann

Mathematics Sciences: Faculty Publications

We propose an extended schematic model for hadrons in which quarks as well as diquarks serve as building blocks. The outcome is a reclassification of the hadron spectrum in which there are no radially excited hadrons: all mesons and baryons previously believed to be radial excitations are orbitally excited states involving diquarks. Also, there are no exotic hadrons: all hadrons previously believed to be exotic are states involving diquarks and are an integral part of the model. We discuss the implications of this result for a new understanding of confinement and its relation to asymptotic freedom, as well as its …

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Apolipoprotein E Mimetic Peptide Improves Hdl Functionality And Inhibits Atherosclerosis Progression In Mouse Models Of Atherosclerosis, Gaurav Nayyar Jan 2012

Apolipoprotein E Mimetic Peptide Improves Hdl Functionality And Inhibits Atherosclerosis Progression In Mouse Models Of Atherosclerosis, Gaurav Nayyar

All ETDs from UAB

Despite major advances in diagnosis and treatment, coronary artery disease (CAD) is still the number one cause of morbidity and mortality in United States. An ideal treatment for lipid-mediated inflammatory disorders would not only reduce plasma cholesterol dramatically but also improve high density lipoproteins (HDL) function. Apolipoprotein E (apo E), a protein component of HDL and very low density lipoprotein (VLDL), is necessary for the receptor mediated hepatic uptake of apolipoprotein-B (apo B) containing remnant lipoproteins and also possesses strong anti-inflammatory properties. We hypothesized that a synthetic dual domain apo E mimetic peptide, Ac-hE18A-NH2 (a 28-residue peptide) containing receptor binding …

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Construction Of Polynomials And Linear Weight Calculation For Weno Schemes, Jacob Alan Nelson Jan 2012

Construction Of Polynomials And Linear Weight Calculation For Weno Schemes, Jacob Alan Nelson

All ETDs from UAB

Many applications of computational fluid dynamics (CFD) require higher order spatial accuracy to resolve the flow field. A few examples of these complex flows include heat transfer problems associated with hypersonic flows, flapping wing simulations, turbo-machineries, rotorcrafts, aero-acoustic problems, and transition to turbulence. Methods being used within the CFD community to achieve higher order spatial accuracy include discontinuous Galerkin schemes, weighted essentially non-oscillatory schemes (WENO), and spectral volume (SV) schemes. Complex flow problems involving complex geometries may necessitate the use of generalized grids for the discretization of the domain. Generalized grids contain elements of multiple types and allow for a …

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Berry G. Jackson, Alias Berry Clyatt: Murder Witness And Murderer, Jessica Eileen Parker Newman Jan 2012

Berry G. Jackson, Alias Berry Clyatt: Murder Witness And Murderer, Jessica Eileen Parker Newman

All ETDs from UAB

This study examines the life of an escaped slave named Berry G. Jackson, alias Berry Clyatt. Jackson was born approximately 1851 in Levy County, Florida, on the Samuel Clyatt plantation. Jackson's is a success story of how a teenage slave escaped his young master, boarded a Union steamer, and served in the Civil War. After the war, Jackson claimed to have met General Ulysses S. Grant in Washington, D.C. and received encouragement to continue north where Grant hoped he would become a farmer. Jackson ended up owning several properties and ultimately possessed 21 acres with a farmhouse in Gates, New …

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The Influence Of Growth Factors Applied During Socket Conversion, On The Incidence Of Spontaneous Early Dental Implant Exposure, Michael Anh Minh Nguyen Jan 2012

The Influence Of Growth Factors Applied During Socket Conversion, On The Incidence Of Spontaneous Early Dental Implant Exposure, Michael Anh Minh Nguyen

All ETDs from UAB

Spontaneous early exposure of a dental implant's cover screw can result in a nidus for plaque accumulation, which may result in inflammation, damage to the peri-implant mucosa, and possible peri-implant bone loss. This study aims to investigate the effect of the addition of growth factors, specifically recombinant human platelet-derived growth factor, and platelet-rich plasma, at the time of socket conversion, on the incidence of early implant exposures. This retrospective study utilized data from a study involving a total of 80 implants that were placed in 4 different types of sites (Groups 1,2,3, and 4). Group 1 sites were extraction sites …

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Electrophysiological Investigation Of Rabbit Retinal Ganglion Cells, Przemyslaw Nowak Jan 2012

Electrophysiological Investigation Of Rabbit Retinal Ganglion Cells, Przemyslaw Nowak

All ETDs from UAB

The retina is the first stage of the visual system, responsible for transducing light into the neural signal and for subsequent processing of this signal before sending it to the higher visual centers in the brain. The output to the higher visual centers is mediated by retinal ganglion cells, which not only relay the signal, but also substantially contribute to its processing. Depending on what computations they perform, they are subdivided into different types. These cells have been extensively studied in various spices, one prominent example being the rabbit. In rabbits, one characteristic type comprises On-Off directionally selective retinal ganglion …

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Inclusion Of Tennis In Elementary And Middle School Physical Education Class Curricula, Antonia Wallis Nugent Jan 2012

Inclusion Of Tennis In Elementary And Middle School Physical Education Class Curricula, Antonia Wallis Nugent

All ETDs from UAB

Introduction: Childhood obesity and physical inactivity are two major health issues in the United States linked to several life threatening diseases. Because of a general lack of physical activity (PA) stemming from a sedentary lifestyle at an early age, it is critical that we provide children with a solid foundation of PA to carry into adulthood. Undoubtedly, school is the best place for instruction. Tennis is a unique sport that can be utilized to increase wellbeing in youth as it offers an abundance of health benefits as well as mental and social benefits. Research regarding tennis integration into physical education …

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Synthesis And Properties Of Poly(Α-Hydroxy Acid)S With Poly(Ether) Cores, Jeffrey Larry Atkinson Jan 2012

Synthesis And Properties Of Poly(Α-Hydroxy Acid)S With Poly(Ether) Cores, Jeffrey Larry Atkinson

All ETDs from UAB

Novel biomaterials composed of a polyglycidol backbone with polyester branches consisting of poly(lactide) or poly(lactide-co-glycolide) are synthesized and characterized. Thermal stability, mechanical properties, and hydrolytic degradation of these polymers are essential factors of their processing and practical application. Data from the analysis of the polymer properties is used to determine structure-property relationships for the branched polyesters. Poly(glycidol) (PG), poly(glycidol)-g-L-lactide (PG-g-La), and poly(glycidol)-g-glycolide (PG-g-Gly) are synthesized for evaluation of the core material and simple branched systems. Thermogravimetry, Fourier transform infrared spectroscopy, and isoconversional kinetic analysis are used to evaluate the kinetic and mechanistic aspects of nonoxidative thermal degradation. It is found …

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Fmri Investigation Of Intertemporal Discounting In Schizophrenia, Kathy Burton Avsar Jan 2012

Fmri Investigation Of Intertemporal Discounting In Schizophrenia, Kathy Burton Avsar

All ETDs from UAB

Schizophrenia is most recognizable by positive symptoms of hallucinations and delusions, but the cognitive deficits and negative symptoms contribute more to functional deficits. The delay discounting (DD) task, with choices between a small immediate reward and a larger delayed reward, tapping into both executive function and reward processing, may prove useful in identifying cognitive and reward processing abnormalities relevant to schizophrenia. In the present study, we used the discounting parameter, k, to assess whether patients with schizophrenia preferred more immediate rewards than healthy controls. We used a model fit statistic, R2, as a measure of choice consistency, quantified using a …

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Risk Factors For Stroke In Rural African Americans And Factors That Influence Exercise Behaviors To Reduce Stroke Risk, Dawn M. Aycock Jan 2012

Risk Factors For Stroke In Rural African Americans And Factors That Influence Exercise Behaviors To Reduce Stroke Risk, Dawn M. Aycock

All ETDs from UAB

Stroke has increased among young adults, which is concerning for African Americans (AA) who tend to have stroke at an earlier age and an increased risk for mortality and severe disability. Rural dwellers lack resources which may increase their susceptibility to stroke. Regular exercise can reduce stroke; however, physical activity among AA is low. The purpose of this research was to use an Expanded Health Belief Model to examine perceived and actual stroke risk among rural AA 19 to 54 years of age and factors that influence exercise behaviors to reduce stroke risk. A cross-sectional correlational design was used. Participants …

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Identification, Molecular Cloning And Characterization Of Transmitted/Founder Hiv-1 Subtype A, D And Ad Viruses And Envelope Glycoproteins, Joshua Baalwa Jan 2012

Identification, Molecular Cloning And Characterization Of Transmitted/Founder Hiv-1 Subtype A, D And Ad Viruses And Envelope Glycoproteins, Joshua Baalwa

All ETDs from UAB

A precise molecular identification of transmitted/founder (T/F) HIV-1 genomes responsible for productive infection in humans can be an enabling strategy for elucidating mechanisms of virus transmission, immunopathogenesis and prevention. Previously, we reported a single genome sequencing approach, which when combined with a mathematical model of early random virus diversification, allowed for an unambiguous identification of T/F HIV-1 subtype B and C envelope (env) genes. Here, we apply this method to the identification and molecular cloning of full-length HIV-1 genomes and env genes of the less well-studied, but nonetheless important, HIV-1 subtypes A and D. Twelve subtype A (n=5), D (n=5) …

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Nanographene Reinforced Carbon/Carbon Composites, Dhruv Bansal Jan 2012

Nanographene Reinforced Carbon/Carbon Composites, Dhruv Bansal

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Carbon/Carbon Composites (CCC) are made of carbon reinforcement in carbon matrix and have high thermal stability and fatigue resistance. CCC are used in nose cones, heat shields and disc brakes of aircrafts due to their exceptional mechanical properties at high temperature. The manufacturing process of CCC involves a carbonization stage in which unwanted elements, except carbon, are eliminated from the polymer precursor. Carbonization results in the formation of voids and cracks due to the thermal mismatch between the reinforcement and the matrix and expulsion of volatiles from the polymer matrix. Thermal cracks and voids decrease the density and mechanical properties …

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Monitoring Arm Use In Daily Life Via Rfid Tracking Of Household Objects, Joydip Barman Jan 2012

Monitoring Arm Use In Daily Life Via Rfid Tracking Of Household Objects, Joydip Barman

All ETDs from UAB

After stroke, capacity to complete tasks in the treatment setting with the moreaffected arm is an unreliable index of actual use of that extremity in daily life. Available objective methods for monitoring real-world arm use rely on placing movement sensors on patients. These methods provide information on amount but not type of arm activity, e.g., functional vs. nonfunctional movement. This paper presents an approach that places sensors on patients and household objects, overcoming this limitation. An accelerometer and the transmitter component of a radio-frequency proximity sensor are attached to objects; the receiver component is attached to the arm of interest. …

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A Pilot Study To Determine The Effectiveness Of Bioelectrical Impedance Analysis As A Clinical Assessment Tool Of Nutrition Status In Glioblastoma Multiforme Patients (The Beam Study [Bia Effectiveness As Assessment Tool For Gbm Patients]), Rebecca V. Barnhill Jan 2012

A Pilot Study To Determine The Effectiveness Of Bioelectrical Impedance Analysis As A Clinical Assessment Tool Of Nutrition Status In Glioblastoma Multiforme Patients (The Beam Study [Bia Effectiveness As Assessment Tool For Gbm Patients]), Rebecca V. Barnhill

All ETDs from UAB

Glioblastoma multiforme (GBM) is a rare brain tumor, yet accounts for 80% of malignant brain tumors and has a five-year survival rate of < 5%. Few studies have evaluated nutrition recommendations and outcomes of this disease, including caloric needs. The purpose of this study was to find the best predictive equation for resting energy expenditure (REE) for GBM patients and evaluate bioelectrical impedance analysis (BIA) as a clinical tool for estimating REE and fat free mass (FFM) of GBM patients. REE was measured with indirect calorimetry. FFM was measured with DXA and estimated with BIA. Published predictive equations for REE were calculated to compare to measured REE. Six equations used variables easily attained in a clinical setting and three used FFM. Correlation analysis was used to evaluate the strength of the relationships between measured and predicted REE. Agreement between methods on the group level was assessed by comparing the group means of measured and predicted REE with paired t-tests. The Bland-Altman approach was used to find agreement between the methods on the individual level. Analysis included fifteen newly diagnosed GBM patients (7 male and 8 female; mean age 57.1±11.6 years) to evaluate equations using clinical variables and a subsample of eight to evaluate predictive equations using FFM. All the predictive equations overestimated measured REE. The Mifflin-St Jeor was the only equation using clinical variables which was not significantly different from measured REE (p=0.054) and had the lowest bias (73 kcal/day) and narrowest limits of agreement. Likewise, Cunningham and Wang equations using FFM from DXA were not significantly different from measured (p=0.261 and p=0.072, respectively). BIA overestimated FFM compared to DXA, 54.1 kg and 49.2 kg, respectively (p<0.001). More visits with both DXA and BIA measurements available are needed before predictive equations with clinical variables and predictive equations with FFM can be compared. Due to the ease of obtaining clinical variables and the low bias and narrow limits of agreement found for the Mifflin equation, at this time it appears to be the best predictive equation for individuals with GBM.

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How Older Adults With Age-Related Macular Degeneration Living In A Southeastern Metropolitan Area Develop Physical Activity Self-Efficacy, A Grounded Theory Study, Elizabeth Anne Barstow Jan 2012

How Older Adults With Age-Related Macular Degeneration Living In A Southeastern Metropolitan Area Develop Physical Activity Self-Efficacy, A Grounded Theory Study, Elizabeth Anne Barstow

All ETDs from UAB

HOW OLDER ADULTS WITH AGE-RELATED MACULAR DEGENERATION LIVING IN A SOUTHEASTERN METROPOLITAN AREA DEVELOP PHYSICAL ACTIVITY SELF-EFFICACY, A GROUNDED THEORY STUDY ABSTRACT This qualitative grounded theory study explored the process of Physical Activity Self-Efficacy development among older adults with age-related macular degeneration in a southeastern metropolitan area. According to the United States Administration on Aging, the population of individuals over 65 will be 88.5 million by the year 2050, doubling its 2010 estimates. As our population ages, so does the prevalence of chronic conditions. One of these chronic conditions, age-related macular degeneration, is the leading cause of vision loss in …

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Examination Of Urban High School Dropouts With High Self-Efficacy: A Phenomenological Study, Ronald Bayles Jan 2012

Examination Of Urban High School Dropouts With High Self-Efficacy: A Phenomenological Study, Ronald Bayles

All ETDs from UAB

The purpose of this study was to explore the lived experience of urban students in Central Alabama with high self-efficacy who have dropped out of school to pursue a GED. This study: (a) provided a platform that gave voice to students to share their lived experience as they made the decision to drop out of high school, (b) identified the character traits of students with high self-efficacy, and (c) revealed the essence of what motivated students to move to resilience after appearing to give up. A qualitative research design was used. The phenomenological approach provided the opportunity for participants to …

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A Histologic And Radiologic Analysis Of Bone Formation Under The Elevated Maxillary Sinus Using Venous Coagulum As The Sole Filling Material, Kathleen Ann Beaudry Jan 2012

A Histologic And Radiologic Analysis Of Bone Formation Under The Elevated Maxillary Sinus Using Venous Coagulum As The Sole Filling Material, Kathleen Ann Beaudry

All ETDs from UAB

Insufficient bone height is a common obstacle to placing dental implants in the posterior maxilla. Sinus lift procedures using various grafting materials have been shown to be a highly predictable way to increase bone height in the posterior maxilla (Jensen 1998). Given the wide range of materials that have proven successful in augmenting the sinus, the argument could be made that the presence of graft is not critical. Instead, the creation and maintenance of space, provided by two implants, along with the osteoinductive properties of the membrane, the periosteum, and growth factors provided by a blood clot are the only …

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Internet Use, Social Integration, And Psychological Well-Being In Older Adults, Ronald William Berkowsky Jan 2012

Internet Use, Social Integration, And Psychological Well-Being In Older Adults, Ronald William Berkowsky

All ETDs from UAB

Previous studies examining the relationship between information and communication technologies (ICTs) and mental health provide conflicting evidence regarding the possible benefits and detriments of ICT use on mental well-being. While ICTs may enhance social cohesion and motivate individuals to engage in new communication methods to strengthen social bonds and develop new social relationships, ICTs may also motivate individuals to retreat from the real world into a virtual one, thus severing established social ties. These positive and negative changes in social integration can have significant effects on mental health, as research has shown that social relationships and social engagement can drastically …

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Full Scale Calcium Bromide Injection With Subsequent Mercury Oxidation And Removal Within Wet Flue Gas Desulphurization System: Experience At A 700 Mw Coal-Fired Power Facility, Mark Simpson Berry Jan 2012

Full Scale Calcium Bromide Injection With Subsequent Mercury Oxidation And Removal Within Wet Flue Gas Desulphurization System: Experience At A 700 Mw Coal-Fired Power Facility, Mark Simpson Berry

All ETDs from UAB

The Environmental Protection Agency promulgated the Mercury and Air Toxics Standards rule, which requires that existing power plants reduce mercury emissions to meet an emission rate of 1.2 lb/TBtu on a 30-day rolling average and that new plants meet a 0.0002 lb/GWHr emission rate. This translates to mercury removals greater than 90% for existing units and greater than 99% for new units. Current state-of-the-art technology for the control of mercury emissions uses activated carbon injected upstream of a fabric filter, a costly proposition. For example, a fabric filter, if not already available, would require a $200M capital investment for a …

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