Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Engineering (783)
- Social and Behavioral Sciences (648)
- Life Sciences (513)
- Physical Sciences and Mathematics (501)
- Medicine and Health Sciences (458)
-
- Arts and Humanities (334)
- Psychology (253)
- Education (211)
- Mechanical Engineering (161)
- Civil and Environmental Engineering (142)
- Chemistry (128)
- Music (115)
- Chemical Engineering (113)
- Electrical and Computer Engineering (110)
- Business (94)
- Environmental Sciences (92)
- Earth Sciences (90)
- Civil Engineering (84)
- Materials Science and Engineering (83)
- Public Health (81)
- Music Performance (80)
- Communication (79)
- Computer Sciences (79)
- Nursing (79)
- Computer Engineering (77)
- Animal Sciences (75)
- History (75)
- Operations Research, Systems Engineering and Industrial Engineering (75)
- Neuroscience and Neurobiology (73)
- Ecology and Evolutionary Biology (67)
- Keyword
-
- Mechanical engineering (476)
- Electrical engineering (282)
- Civil engineering (254)
- Computer science (249)
- Forestry (156)
-
- Chemical engineering (152)
- Clinical psychology (152)
- Ecology (130)
- Behavioral psychology (116)
- Petroleum engineering (113)
- Aerospace engineering (112)
- Industrial engineering (112)
- Higher education (108)
- Economics (103)
- Environmental engineering (99)
- Geology (99)
- Animal sciences (97)
- Materials science (95)
- Molecular biology (94)
- Public health (90)
- Aquatic sciences (88)
- Mining engineering (88)
- Educational technology (86)
- Energy (84)
- Environmental science (84)
- Developmental psychology (83)
- Educational psychology (82)
- Dentistry (78)
- Machine Learning (75)
- Social psychology (71)
- Publication Year
- File Type
Articles 7381 - 7410 of 11969
Full-Text Articles in Entire DC Network
Levels Of Stress And Mechanisms Of Coping Among Male Freshman Athletes, Gregory A. White
Levels Of Stress And Mechanisms Of Coping Among Male Freshman Athletes, Gregory A. White
Graduate Theses, Dissertations, and Problem Reports (ETD)
Context. Studies on freshman athletes stress levels and mechanisms of coping are lacking in frequency. This study is being performed to further the knowledge base dealing with stress and coping in the freshman collegiate population Objective. The purpose of this study is to identify the levels of stress and the mechanisms of coping with stress among male freshman Football and Soccer athletes. Design. First design will be a 1X3 factorial design for stress using the Quick Stress Questionnaire (QSQ). The second design will incorporate descriptive statistics using percentages to examine coping via the Brief COPE Questionnaire (BCQ). Setting. This study …
Stream Flow Characterization Over Longwall Coal Mines In Pennsylvania, Ohio, And West Virginia, Scott A. Wade
Stream Flow Characterization Over Longwall Coal Mines In Pennsylvania, Ohio, And West Virginia, Scott A. Wade
Graduate Theses, Dissertations, and Problem Reports (ETD)
Six streams were studied in Ohio, Pennsylvania, and West Virginia to evaluate subsidence impacts from active and abandoned longwall coal mines on stream discharge. Mined longwall panels included in this study ranged in age from five months to fifteen years old and in depth from 100 to 600 feet (30.5 to 182.9 m) beneath the studied streams.;Significant stream flow losses and gains were detected in each stream studied. Comparing longwall panel locations to stream flow measurements, geophysical surveys, and geomorphology surveys, it was concluded that longwall mine subsidence caused some of the detected stream flow losses and gains. Data collected …
Long-Term Follow-Up Of Patients Treated With The Edgewise Crowned Herbst Appliance In The Mixed Dentition, Timothy G. Wigal
Long-Term Follow-Up Of Patients Treated With The Edgewise Crowned Herbst Appliance In The Mixed Dentition, Timothy G. Wigal
Graduate Theses, Dissertations, and Problem Reports (ETD)
Objectives. Research has indicated that the bite jumping technique employed by the crowned Herbst appliance can be effective in correcting Class II skeletal abnormalities by promoting growth of the mandible and remodeling of the glenoid fossa. This research investigated the skeletal and dental alterations of Class II patients treated at an early age with the edgewise crowned Herbst appliance and evaluated the long term stability of those effects. Methods. Cephalometric analysis was performed for a treatment group consisting of 22 radiographs taken before phase I treatment (T1), immediately after Herbst removal during phase I treatment (T2), at the completion of …
Have National Collegiate Athletic Association Institutions Increased The Number Of American Heart Association Recommendations For Cardiac Screening?, Jennifer R. Street
Have National Collegiate Athletic Association Institutions Increased The Number Of American Heart Association Recommendations For Cardiac Screening?, Jennifer R. Street
Graduate Theses, Dissertations, and Problem Reports (ETD)
Context. Sudden cardiac death among young competitive collegiate athletes has heightened interest in cardiovascular pre-participation screening in colleges and universities. Objective. The purpose of the study was to identify the cardiovascular screening protocols among National Collegiate Athletic Association (NCAA) Division I, II, and III institutions in accordance with the recommended American Heart Association (AHA) guidelines. Design. The design of this study was a prospective descriptive analysis, which identified the cardiovascular screening and use of the recommended American Heart Association guidelines by surveying Division I, II, and III National Collegiate Athletic Association institutions. Setting. National Collegiate Athletic Association Division I, II, …
Computer Modeling Of Dapsone-Mediated Heteroactivation Of Flurbiprofen Metabolism By Cyp2c9, Robyn Renee Ayscue
Computer Modeling Of Dapsone-Mediated Heteroactivation Of Flurbiprofen Metabolism By Cyp2c9, Robyn Renee Ayscue
Graduate Theses, Dissertations, and Problem Reports (ETD)
The occurrence of atypical kinetics in cytochrome P450 reactions can confound in vitro determinations of a drug's kinetic parameters. During drug development, inaccurate kinetic parameter estimates can lead to incorrect decisions about a lead compound's potential for success. It has become widely accepted that in certain CYP subfamilies more than one molecule can occupy the active site simultaneously, in some cases resulting in enhanced substrate turnover (heteroactivation). However, the specific mechanism(s) by which dual-compound binding results in heteroactivation remain unclear. It is known that orientation of the substrate in the active site, as dictated by interactions with active site residues, …
In Vitro Elucidation Of The Metabolic Fate Of The Anticancer Drug Busulfan, Islam Rasem Younis
In Vitro Elucidation Of The Metabolic Fate Of The Anticancer Drug Busulfan, Islam Rasem Younis
Graduate Theses, Dissertations, and Problem Reports (ETD)
Busulfan is a bifunctional alkylating agent that is used to treat mylogenous leukemia. The major elimination pathway of busulfan is through glutathione-S-transferase (GST) catalyzed conjugation to form glutathione sulfonium conjugate. The aim of this work is to elucidate the novel metabolic pathways of busulfan that may explain its toxicity. The observed data showed that busulfan is not a substrate for CYP450. The sulfonium ion conjugate of busulfan was found to be inactive as it did not inhibit GST in human liver cytosol, did not react with 4-(4-nitrobenzyl)pyridine, did not induce apoptosis in NCI-H460 cells, and was not stable in basic …
Characterization And Application Of Dmpc-Dhpc Phospholipid Preparations For Non-Mechanical Flow Control In Microfluidics, Theron John Pappas
Characterization And Application Of Dmpc-Dhpc Phospholipid Preparations For Non-Mechanical Flow Control In Microfluidics, Theron John Pappas
Graduate Theses, Dissertations, and Problem Reports (ETD)
The viscosity of aqueous phospholipid mixtures comprised of 1,2-dimyristoyl- sn-glycero-3-phosphocholine (DMPC) and 1,2-dihexanoyl-sn -glycero-3-phosphocholine (DHPC) was characterized with an automated capillary electrophoresis system, as a function of chemical composition, temperature, electric fields, and magnetic fields. This information was then utilized to demonstrate non-mechanical flow control on a microfluidic device based on induced changes in the viscosity of various DMPC-DHPC lipid preparations.
De Novo Asymmetric Syntheses Of Biologically Active Natural Product, Haibing Guo
De Novo Asymmetric Syntheses Of Biologically Active Natural Product, Haibing Guo
Graduate Theses, Dissertations, and Problem Reports (ETD)
The enantioselective syntheses of daumone and four analogs have been achieved in 7 to 8 steps. This route relies upon a diasteroselective palladium catalyzed glycosylation reaction for the formation of the anomeric bond. The asymmetry of the sugar and aglycone portion of daumone were introduced by Noyori reduction of an acylfuran and a propargyl ketone. A highly diastereoselective epoxidation and reductive ring opening established the desired C-2 and C-4 stereochemistry of daumone.;A highly enantioselective and stereocontrolled approach to D-, L-swainsonine and 8, 8a-epi-D-swainsonine has been developed from achiral furan or furfural. A one-pot hydrogenolysis, followed by an intramolecular reductive amination …
Weston State Hospital, Kim Jacks
Weston State Hospital, Kim Jacks
Graduate Theses, Dissertations, and Problem Reports (ETD)
Weston State Hospital was a major mental institution in Weston, West Virginia. This study traces the history of the hospital from its construction in the 1860s to its closing in 1994. It was established as the Trans-Allegheny Lunatic Asylum, and then called the West Virginia Hospital for the Insane from 1863 to 1915. The building was designed following the Kirkbride plan, which would allow for a pleasant and orderly place of refuge for 250 patients. Gradual overcrowding led to its becoming a custodial facility for over 2300 patients by the 1950s. This study examines the management of the institution, the …
Solutions For 2-Dimensional Stabilized Kuramoto -Sivashinsky System, Maomao Cai
Solutions For 2-Dimensional Stabilized Kuramoto -Sivashinsky System, Maomao Cai
Graduate Theses, Dissertations, and Problem Reports (ETD)
We study a stabilized Kuramoto-Sivanshinsky system in two-dimensional space. A model consists of a mixed Kuramoto-Sivanshinsky-Korteweg-de Vires equation, linearly coupled to an extra linear dissipative equation. The model is proposed to describe the surface waves on multi-layered liquid films. In this work, we investigate the stability of the solution to this system by establishing a priori energy estimate for the linearized problem of this non-linear system. We use linear iteration to prove the local existence of the solution to this system. Based on a weak global priori energy estimate, we further prove the global existence and uniqueness of classical solution …
Impact Of A Physical Activity Intervention For Weight Loss: A Qualitative Analysis Of Participant Perceptions And Expectations, Jessica Anne Creasy
Impact Of A Physical Activity Intervention For Weight Loss: A Qualitative Analysis Of Participant Perceptions And Expectations, Jessica Anne Creasy
Graduate Theses, Dissertations, and Problem Reports (ETD)
The purpose of this study was to investigate perceptions of self-esteem and body image and expectations for success among participants enrolled in a physical activity and nutritional intervention for weight loss. Qualitative research methods (individual interviews) were conducted to assess how participants felt about themselves, their bodies, and the intervention. In all, 10 participants were interviewed; five were in the initial week of the weight loss intervention (Phase I) and five had been enrolled in the intervention between 9--13 months (Phase II). Weight in pounds and body fat percentage were obtained for all participants at time of enrollment, and at …
Effect Of Breathing, Posture, And Air Velocity On Breathing Zone Gas Concentrations For Human Subjects In A Wind Tunnel, Ahmed R. El-Sotouhy
Effect Of Breathing, Posture, And Air Velocity On Breathing Zone Gas Concentrations For Human Subjects In A Wind Tunnel, Ahmed R. El-Sotouhy
Graduate Theses, Dissertations, and Problem Reports (ETD)
Industrial hygienists generally place air-sampling probes on the mid to upper torso of workers when attempting to determine inhaled concentrations. There is no convincing evidence that concentrations measured on the chest are equal to inhaled concentrations. To determine how well surrogate locations matched concentrations at the mouth (Cmouth), low concentrations of ethanol in nitrogen were released between the hands of standing and seated human subjects while they moved children's blocks back and forth over the source.;In all cases, each of four subjects stood or sat with their backs to the airflow in a wind tunnel because previous studies had established …
Design And Performance Analysis Of Electric Vehicles Fed By Multiple Fuel Cells, Pardis Khayyer
Design And Performance Analysis Of Electric Vehicles Fed By Multiple Fuel Cells, Pardis Khayyer
Graduate Theses, Dissertations, and Problem Reports (ETD)
Recent advances in fuel cell developments have introduced them to many applications such as hybrid electric vehicles and heat/power cogenerations. They bring the advantage of clean energy and decrease the dependency on imported oil by providing fuel efficient devices in many applications such as electric vehicles. Conventional designs of hybrid fuel cell vehicles make use of a single fuel cell power source and a storage device to provide the base load and transients in various driving cycles. This thesis proposes a new configuration of multiple fuel cell power sources in hybrid fuel cell vehicles. Fuel cells are downsized in this …
Understanding The Motivations Of Ghanaian Bureaucrats, Christine Naa Norley Lokko
Understanding The Motivations Of Ghanaian Bureaucrats, Christine Naa Norley Lokko
Graduate Theses, Dissertations, and Problem Reports (ETD)
This study examines the factors that affect the work performance of Ghanaian bureaucrats. Three decades ago Robert Price (1975) examined the impact that kinship ties had on the motivation of Ghanaian bureaucrats. He found that Ghanaian bureaucrats behaved in particularistic fashions as opposed to acting in a universalistic manner, suggesting kinship was a major determinant of bureaucratic routine. This study followed the work of Price by replicating his mix of interviews and surveys, with the addition of questions that incorporate recent work on bureaucracy that suggest motivation involves a mix of solidary, functional, and pecuniary preferences (Brehm and Gates, 1997; …
Lidar, Gis, And Multivariate Statistical Analysis To Assess Landslide Risk, Horseshoe Run Watershed, West Virginia, Kory M. Konsoer
Lidar, Gis, And Multivariate Statistical Analysis To Assess Landslide Risk, Horseshoe Run Watershed, West Virginia, Kory M. Konsoer
Graduate Theses, Dissertations, and Problem Reports (ETD)
Current stream restoration practices focus on stabilizing banks, transporting sediment, and creating aquatic habitats. However, only channel morphology data are collected prior to typical restoration project designs. A more thorough approach to assessing restoration projects incorporates the geomorphology of the contributing hillslopes within the watershed. For this project, a landslide risk assessment was conducted for Horseshoe Run watershed in West Virginia using LiDAR data, GIS, and multivariate statistical analysis to provide the restoration projects with information concerning the geomorphology of the hillslopes and identify areas of greater risk for slope failure. A landslide inventory map was created using field observations …
Properties And Function Of Somatostatin-Containing Inhibitory Interneurons In The Somatosensory Cortex Of The Mouse, Yunyong Ma
Graduate Theses, Dissertations, and Problem Reports (ETD)
GABAergic inhibitory interneurons play a pivotal role in balancing neuronal activity in the neocortex. They can be classified into different classes according to their variable morphological, electrophysiological, and neurochemical properties, including two major groups: parvalbumin-containing (PV+), fast-spiking (FS) cells and somatostatin-containing (SOM+) cells. Using transgenic mice, we identified two subgroups, distinct by all criteria, of SOM+ cells in the somatosensory (barrel) cortex of the mouse, one (called X94) in layer 4 and 5B, and the other one (X98) in deep layers (Ma et al., 2006). We found that X98 cells were calbindin-expressing (CB+), infragranular, layer 1--targeting "Martinotti" cells, and had …
Study Of The Variations In Continuous Diesel Particulate Matter Size Measurements And Effect Of Fuel Properties On Dpm Size, Kevin Anthony Chappell Flaim
Study Of The Variations In Continuous Diesel Particulate Matter Size Measurements And Effect Of Fuel Properties On Dpm Size, Kevin Anthony Chappell Flaim
Graduate Theses, Dissertations, and Problem Reports (ETD)
Heavy-duty diesel engines (HDDE), because of their widespread use and reputation of expelling excessive soot, have frequently been held responsible for superfluous amounts of overall environmental particulate matter (PM). PM is a considerable contributor to air pollution, and a subject of primary concern to health and regulatory agencies worldwide. The U.S. Environmental Protection Agency (EPA) has provided PM emissions regulations and standards of measurement techniques since the 1980's. PM standards set forth by the EPA for HDDEs are based only on total mass, instead of size and/or concentration. The European Union is considering regulating particle size, and it may influence …
Implications Of Motivational Interviewing And Oral Hygiene Instruction For The Reduction Of Oral Health Disparities Among Pregnant Women, Renata K. Martins
Implications Of Motivational Interviewing And Oral Hygiene Instruction For The Reduction Of Oral Health Disparities Among Pregnant Women, Renata K. Martins
Graduate Theses, Dissertations, and Problem Reports (ETD)
Pregnancy is a "teachable moment" during which women may be particularly amenable to making health behavior changes that can have significant impact, not only on themselves, but also on their offspring. Dental complications during pregnancy, such as periodontal disease, have been linked to low birth weight and premature birth. Additionally, mothers' oral health status has been related to childhood caries, through the direct transmission of oral pathogens. Motivational Interviewing (MI) is a promising intervention in the oral health care arena. MI has been empirically supported as a treatment for substance abuse, as well as other health issues including, diabetes, HIV, …
Cognitions Of The Community: The Worldview Of U.S. Intelligence, David Alex Mastro Ii
Cognitions Of The Community: The Worldview Of U.S. Intelligence, David Alex Mastro Ii
Graduate Theses, Dissertations, and Problem Reports (ETD)
This dissertation attempts to determine what the worldview of U.S. intelligence looks like so that it can be incorporated into America's intelligence identity. I argue that this is necessary to gain a better understanding of why the agencies that comprise the U.S. Intelligence Community (IC) share several behaviors despite having different interests and preferences. To answer my research question, which asks what the worldview of U.S. intelligence is, I conceptualize the IC's core belief system about world politics (its worldview) as the five philosophical beliefs in an operational code. I hypothesize about how the IC views each of these cognitions …
Perceived Preparedness Of Graduate Assistant Novice Approved Clinical Instructors For Supervision Of Undergraduate Athletic Training Students, Christopher M. Pircher
Perceived Preparedness Of Graduate Assistant Novice Approved Clinical Instructors For Supervision Of Undergraduate Athletic Training Students, Christopher M. Pircher
Graduate Theses, Dissertations, and Problem Reports (ETD)
Context. Athletic training clinical education has gone through reform since the Commission on Accreditation of Athletic Training Education (CAATE) has become the accrediting body of the profession. The amount of time that an undergraduate athletic training student has in the clinical education setting is very valuable to their development as a certified athletic trainer (ATC) and possibly as an approved clinical instructor (ACI). Therefore, the preparedness of the approved clinical instructor is very crucial. Objective. The purpose of the study is to determine the perceived preparedness of graduate assistant novice ACIs in the supervision of undergraduate ATSs in clinical education. …
Toward The Synthesis Of Polycyclic Aromatic Compounds As Nano-Carbon Cages, Ruoxin Zhang
Toward The Synthesis Of Polycyclic Aromatic Compounds As Nano-Carbon Cages, Ruoxin Zhang
Graduate Theses, Dissertations, and Problem Reports (ETD)
Under mild conditions, a key intermediate, diketone 51, for synthesis of buckybaskets was successfully synthesized through methylation of diketone 52. The Diels-Alder reaction between 2,5-dicarbomethoxy-3,4-diphenylcyclopentadienone (57) and 5,6-dimethoxy-2-norbornene (58) provided diester 56. Decarbonylation of 56 furnished diester 55, which on hydrolysis afforded diacid 54. Intramolecular acylation of diacid 54 furnished diketone 52.
Cellular Mechanisms Of Effects Of Sphingosine 1 -Phosphate On Vascular Endothelial Barrier, Mei Xu
Cellular Mechanisms Of Effects Of Sphingosine 1 -Phosphate On Vascular Endothelial Barrier, Mei Xu
Graduate Theses, Dissertations, and Problem Reports (ETD)
Sphingosine 1-phosphate (S1P), a biologically active lipid, induces a myriad of cellular events including enhancement of the endothelial barrier and assembly of adherens junction proteins, VE-cadherin and catenins. The over all goal in this set of studies was to investigate what cellular mechanisms contribute to S1P-induced enhancement of the vascular endothelial barrier.;Since VE-cadherin contributes to the stabilization of the endothelial barrier, I determined in the first study if the rapid, barrier-enhancing activity of S1P requires VE-cadherin. Ca2+-dependent, homophilic VE-cadherin binding of endothelial cells, derived from human umbilical veins and grown as monolayers, was disrupted with EGTA, an antibody to the …
An Analysis Of The Gypsy Moth Event Monitor Modified Forest Vegetation Simulator And The Stand Damage Model Using Empirical Long-Term Measurement Plot Data From The Appalachian Hardwood And The Atlantic Coastal Plain Mixed Pine-Hardwood Regions., Matthew Paul Perkowski
Graduate Theses, Dissertations, and Problem Reports (ETD)
Predictions based on the Gypsy Moth Event Monitor and the Stand Damage Model were compared to remeasurement plot data from long-term studies which received gypsy moth defoliation. Data were from three studies located in the Appalachian hardwood region and the Atlantic Coastal Plain. Projection errors, in terms of trees per acre and basal area per acre, were examined. The Stand Damage Model underestimated trees per acre and basal area per acre for all simulated stands. The Gypsy Moth Event Monitor modified Forest Vegetation Simulator underestimated defoliation events, especially those of high intensity; however, these errors were often reduced over time …
Diet Formulation And Manufacturing Technique Interactions Affect Pellet Quality And Broiler Growth., Nancy P. Buchanan
Diet Formulation And Manufacturing Technique Interactions Affect Pellet Quality And Broiler Growth., Nancy P. Buchanan
Graduate Theses, Dissertations, and Problem Reports (ETD)
The majority of broilers are fed pelleted diets. Feeding pelleted diets results in an improvement in weight gain and feed conversion compared to feeding mash diets. However, improvements in performance are contingent upon pellet quality. Manipulation of diet formulation and manufacturing technique has been associated with pellet quality changes. However, the interaction between the two factors is rarely explored. The objectives of this series of research were (1) to explore the main effects and interactions that occur when small inclusions of fiber, protein, and moisture are added to a corn-soybean based diets; and (2) to explore the main effects and …
Utilization Of Excess Manure Within The Chesapeake Bay Watershed: A Cost Minimization Approach., Serkan Catma
Utilization Of Excess Manure Within The Chesapeake Bay Watershed: A Cost Minimization Approach., Serkan Catma
Graduate Theses, Dissertations, and Problem Reports (ETD)
As livestock production has become spatially concentrated, the amount of manure nutrients that need to be managed off-farm have expanded. Chesapeake Bay Watershed has been particularly impacted by trend. Kellogg (2000) reports that this watershed is among the highest ranked priority watersheds in the U.S. that is in need of protection from manure nutrients. This study focuses evaluating cost-effective ways of utilizing excess manure from poultry, dairy and swine production in Chesapeake Bay region. Alternatives examined are crop and forest land application, composting, pelletization, and electricity generation. A capacitated mixed linear integer programming is used in this study. This model …
"Keep America American": Great Depression, Government Intervention, And Conservative Response In Somerset County, Pennsylvania, 1920s - 1940., Jennifer Ann Egolf
"Keep America American": Great Depression, Government Intervention, And Conservative Response In Somerset County, Pennsylvania, 1920s - 1940., Jennifer Ann Egolf
Graduate Theses, Dissertations, and Problem Reports (ETD)
This study of one rural county in western Pennsylvania during the Great Depression highlights people’s response to government recovery programs. Rural folks in Somerset County experienced the depression before the crash in 1929, and throughout the 1920s, miners and farmers in the area found ways to cope with rising unemployment and declining farm prices. Miners used the strike to fight for better conditions; farmers organized into cooperatives to secure the best prices for their products. Each promulgated a set of values that reflected their vision of America. The 1920s was only a prelude to the economic downturn in the 1930s, …
An Assessment Of Monongahela National Forest Management Indicator Species., Kurt R. Moseley
An Assessment Of Monongahela National Forest Management Indicator Species., Kurt R. Moseley
Graduate Theses, Dissertations, and Problem Reports (ETD)
The indicator species concept is appealing to land managers charged with monitoring and conserving the vast and complex biological diversity with limited available finances. We review common management indicator species (MIS) selection criteria and associated criticisms, including sensitivity to disturbance, monitoring efficacy, baseline information, and social and economic importance. Additionally, we examine current MIS for the Monongahela National Forest based on our review of selection criteria. We used the analytical hierarchy process (AHP) to determine the best MIS for three management objectives of the 364,225-ha Monongahela National Forest: (1) maintenance of 20,250 ha of early successional habitat, (2) maintenance of …
The Effects Of Standards -Based Curriculum Modeling On Preservice Elementary Teachers' Mathematical Content Knowledge, Beliefs, And Attitudes., David I. Kennedy
The Effects Of Standards -Based Curriculum Modeling On Preservice Elementary Teachers' Mathematical Content Knowledge, Beliefs, And Attitudes., David I. Kennedy
Graduate Theses, Dissertations, and Problem Reports (ETD)
In this dissertation study the researcher modeled NCTM-standards-based teaching while using different instructional materials in two sections of a college mathematics content course for preservice elementary teachers. One section (n = 29) used a typical college text while the other (n = 30) used innovative middle-school materials. After one semester, participants in both class sections showed significant gains in their mathematics content knowledge, the level of their standards-based beliefs about mathematics, and their attitudes toward mathematics. Mathematics-content gains were greater in the college-text group. Interviews were also conducted. Results suggest that both college texts and innovative middle-school materials can serve …
An In Vivo Examination Of The Pulmonary Toxicity Of Ultrafine And Fine Carbon Black And Titanium Dioxide: Defining The Role Of Particle Surface Area., Tina Marie Sager
An In Vivo Examination Of The Pulmonary Toxicity Of Ultrafine And Fine Carbon Black And Titanium Dioxide: Defining The Role Of Particle Surface Area., Tina Marie Sager
Graduate Theses, Dissertations, and Problem Reports (ETD)
The purpose of this study was to test this hypothesis examining the in vivo effects of ultrafine and fine particles on certain parameters of pulmonary damage and inflammation in the rat model. To do this each treatment group received a dosage based on mass particles. This dosage was then expressed as surface area of the particles (instead of mass) to determine if surface area rather than mass is the more appropriate metric of dose for pulmonary toxicity studies. To assess inflammation, BAL was conducted harvested and PMNs were counted as an indicator of pulmonary inflammation. LDH activity was also measured …
The Effect Of Follicular Aging On Gene Expression In Oocytes And Granulosal Cells., Brandon Michael Lingenfelter
The Effect Of Follicular Aging On Gene Expression In Oocytes And Granulosal Cells., Brandon Michael Lingenfelter
Graduate Theses, Dissertations, and Problem Reports (ETD)
Mammalian oogenesis usually occurs concomitantly with folliculogenesis, coordinated through paracrine effects and physical contacts. During this time, the oocyte acquires the ability to resume meiosis, undergo fertilization and sustain embryonic development. Synthesis of RNA occurs during oogenesis and is largely responsible for early embryonic development. Any perturbations that delay either activation or ovulation can result in early embryonic loss. Therefore, the interacting effects at the genomic level were investigated using a persistent follicle model. Experiment 1. The present study was conducted to analyze global gene expression profiles in granulosal cells from ovarian follicles in cows. Analysis of the microarray data …