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2005

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The Effects Of Scripted Instruction On Proper Foot Plant During A -Skip In A Practice High School Track And Field Setting, Darian Anthony Parker Jan 2005

The Effects Of Scripted Instruction On Proper Foot Plant During A -Skip In A Practice High School Track And Field Setting, Darian Anthony Parker

UNLV Retrospective Theses & Dissertations

Track and field is a sport that thrives on technique correction for skill acquisition (Mero, Komi and Gregor, 1992). Research in terms of approaches to improving skill acquisition and technique correction in novice high school track and field sprinters has been limited. Although recent efforts to improve skill acquisition in track and field have been effective (Hanin, Korjus, Jouste & Baxter, 2002 & Shestakov, Arakelian & Primakov, 2000), there does not appear to be any studies utilizing Gangstead and Beveridge's (1984) explicit instruction model as a way to improve skill acquisition for novice high school track and field sprinters. Explicit …

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Estimating The Effects Of September 11 On Las Vegas Strip Gaming Volume, David Eisendrath Jan 2005

Estimating The Effects Of September 11 On Las Vegas Strip Gaming Volume, David Eisendrath

UNLV Retrospective Theses & Dissertations

This paper examines the decrease in gross gaming volume, specifically slot machine coin-in, on the Las Vegas Strip resulting from the events of September 11, 2001. An intervention analysis based on a seasonal ARIMA model was developed from Nevada Gaming Control Board slot machine coin-in data analyzed from January 1990 to November 2004. The findings revealed that the Strip experienced an abrupt decline in gaming volume lasting five months. Although a quick recovery ensued, residual effects lasted approximately two years. In spite of the uniqueness of the events of September 11, this study should help managers in their response to …

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Applications Of Sensors For In-Home Elder Support, Kofi Baffour Asare Cobbinah Jan 2005

Applications Of Sensors For In-Home Elder Support, Kofi Baffour Asare Cobbinah

UNLV Retrospective Theses & Dissertations

The number of retirees in the US is continuously increasing in proportion to the total population as the baby-boomers in the United States age. As these retirees age they are in need on continuous medical treatment and care which impacts the percent of the national budget placed on healthcare. As healthcare issues with the retirees they are often moved by their family members to assisted living facilities or to nursing homes. This movement is costly to both the family members and to the government agencies paying for or subsidizing their care. The proposal brought forth in this thesis is to …

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Novel Cisplating Analogs: Synthesis, Characterization And Cytotoxicity In Breast Cells, Kyler Elizabeth Elwell Jan 2005

Novel Cisplating Analogs: Synthesis, Characterization And Cytotoxicity In Breast Cells, Kyler Elizabeth Elwell

UNLV Retrospective Theses & Dissertations

Cis-diamminedichloroplatinum (II) (cisplatin) has been used for three decades as an anti-cancer treatment, but is limited in its therapeutic uses by side effects and cell resistance. In this study, new cisplatin analogues were developed, synthesized, and evaluated for cytotoxicity and cellular mechanisms. Two novel drugs 4,4'-bis(4,4,4-trifluorobutyl)-2,2'-bipyridine-PtCl 2 and 4,4'-bis(4,4,4-trifluorobutyl)-2,2'-bipyridine-Re(CO)3Cl and two previously synthesized drugs 4,4'-dimethyl-2,2'-bipyridine-PtCl 2 and 4,4'-dimethyl-2,2'-bipyridine-Re(CO)3Cl were tested, in breast cancer cell lines MDA-MB-435, MDA-MB-231 and transformed cell lines DC4 and DB46. Cytotoxicity assays found that the rhenium-containing compounds had no effect in the transformed lines and the platinum compounds were more effective than cisplatin at inducing cell …

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Petrogenesis And Geochemistry Of Pleistocene And Pliocene Basalt Flows Of The Pine Valley Volcanic Field, Utah And Their Relationship To The Tectonics Of The Utah Transition Zone, Matthew Faust Jan 2005

Petrogenesis And Geochemistry Of Pleistocene And Pliocene Basalt Flows Of The Pine Valley Volcanic Field, Utah And Their Relationship To The Tectonics Of The Utah Transition Zone, Matthew Faust

UNLV Retrospective Theses & Dissertations

The Pine Valley Volcanic Field in southwestern Utah consists of at least 24 mafic lava flows and 10 vents. Eruptions have spanned the past 2.4 m.y. The youngest eruptions at the Snow Canyon and Diamond Valley cones occurred between 1 and 20 ka. Lava flows range in composition from basalt to andesite, and include both alkaline and subalkaline rocks throughout the field. Trace element abundances for the youngest lavas show both oceanic island basalt (OIB) and mid-oceanic ridge basalt (MORB) components in their source. Sr and Nd isotopic ratios exhibit evolved values, spanning a large range from epsilon Nd of …

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Cracking Of Zircaloy-4 In Acidic Solution Under Controlled Potentials, Elumalai Govindaraj Jan 2005

Cracking Of Zircaloy-4 In Acidic Solution Under Controlled Potentials, Elumalai Govindaraj

UNLV Retrospective Theses & Dissertations

The susceptibility of Zircaloy-4 (Zr-4), a leading cladding material for nuclear fuels, to stress corrosion cracking (SCC) has been determined in an acidic solution at ambient and elevated temperatures by using constant-load and slow-strain-rate (SSR) testing techniques. Since the cracking susceptibility of Zr-4 may be influenced by electrochemical potential resulting from the repository environment, SCC testing has been performed under anodic and cathodic controlled potentials (Econt). While no failures were observed at constant load, the results of SSR testing exhibited enhanced ductility but reduced failure stress at elevated temperatures. The corrosion potential, determined by the cyclic potentiodynamic polarization technique, became …

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A Modified Bootstrap Method For Handling Non Detects In Environmental Data, Michelle Melissa Guillaume Jan 2005

A Modified Bootstrap Method For Handling Non Detects In Environmental Data, Michelle Melissa Guillaume

UNLV Retrospective Theses & Dissertations

Many samples taken for environmental purposes have concentrations that are measured below the detection limit. Below the detection limit does not mean that there is no concentration present; there may be a concentration present that cannot be accurately measured by the analytical instrument or cannot be determined with 95% confidence that the concentration is greater than zero (EPA, 1989). These concentrations are defined non-detects in the data. When the concentration of the contaminant of concern in a sample falls below the detection limit, it is standard laboratory procedure to represent these data as

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The Role And Relevancy Of The Black Church In Today's Society, Anthony Fitzgerald Harris Jan 2005

The Role And Relevancy Of The Black Church In Today's Society, Anthony Fitzgerald Harris

UNLV Retrospective Theses & Dissertations

The purpose of this study is to gather information about the role and the relevancy of the black church in regards to social issues in today's society. The significance of the study reflects many attitudes of the African-American community. It gives greater insight on the questions surrounding the differing roles of the black church. This study also gives some insight to churches on what the participants say makes the church relevant to them. With this information, churches can become more aware and capable of meeting the needs of the people in the community; The methods used were an in-depth qualitative …

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Understanding The Role Of Predicted Outcome Value In The Negotiation Of Condom Use, Shawna Gwynne Harris Jan 2005

Understanding The Role Of Predicted Outcome Value In The Negotiation Of Condom Use, Shawna Gwynne Harris

UNLV Retrospective Theses & Dissertations

This study is a quantitative analysis of influences on college students' willingness to persist with a request to use a condom. The participants consist of 129 undergraduate students enrolled in introductory and upper division courses at a large, southwestern university. The research design is a 2 x 2 x 2 factorial: prediction of cooperation (yes, no), prediction of future relationship (long-term, one-night stand), and gender (male, female). Four different instruments, each with a different hypothetical scenario manipulating the relationship status and cooperation independent variables, were randomly distributed to all participating students with request persistence and message directness as the dependent …

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An Investigation Of The Kaplan-Meier Upper Confidence Limit For The Population Mean From Environmental Samples With Nondetects, Violeta Graciela Hennessey Jan 2005

An Investigation Of The Kaplan-Meier Upper Confidence Limit For The Population Mean From Environmental Samples With Nondetects, Violeta Graciela Hennessey

UNLV Retrospective Theses & Dissertations

The Kaplan-Meier (K-M) estimator is a non-parametric estimator of the survival function, used in lifetesting and medical follow-up studies where some of the observations are incomplete (right-censored data). In environmental applications, the user is faced with the problem of contaminant concentration falling below the limit of detection (DL) of the instrument (left-censored data). The K-M estimator has recently been proposed in environmental literature for computing the Upper Confidence Limit (UCL) of the mean in the presence of nondetects in environmental data sets. The properties of this UCL, however, have not been investigated. In this thesis, I propose to use Monte …

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A Label Based Routing Protocol For Wireless Sensor Networks, Naoto Kimura Jan 2005

A Label Based Routing Protocol For Wireless Sensor Networks, Naoto Kimura

UNLV Retrospective Theses & Dissertations

One of the challenging issues in wireless sensor networks is to acquire, process, and transmit information using the least amount of battery power; In response to this problem, a novel routing scheme for wireless sensor networks, called "Information Dissemination via Label Forwarding (IDLF)", is presented. IDLF consists of three information exchanging stages. In the first stage, a label is disseminated by a source. After a sink receives the label, it replies a request to the source. By exchanging a label and request, a data path between a source and sink is formed. Finally, an actual data is transmitted through the …

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The Dynamics Of Nonviolence In The Palestinian-Israeli Conflict, Michael Doc Howard Jan 2005

The Dynamics Of Nonviolence In The Palestinian-Israeli Conflict, Michael Doc Howard

UNLV Retrospective Theses & Dissertations

The Palestinian/Israeli conflict is one of the most challenging political puzzles of the modern era. Although this is a bold assertion, the influence of this one conflict on the politics of the Middle Eastern region and on the politics of the new millennium is overwhelming. Hence, figuring out how to solve the puzzle, or more realistically, contributing to movements towards a resolution is paramount. This thesis seeks to assist in the scholarship dedicated to achieving this end. It does so from a unique perspective; The thesis contends through a normative argument that a shift in Palestinian strategy, from violence to …

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Characterization Of Alloy C-276 As A Structural Material For High-Temperature Heat Exchangers, Narendra V Kothapalli Jan 2005

Characterization Of Alloy C-276 As A Structural Material For High-Temperature Heat Exchangers, Narendra V Kothapalli

UNLV Retrospective Theses & Dissertations

This investigation was focused on characterizing the high-temperature tensile behavior and corrosion susceptibility of nickel-based Alloy C-276, a leading structural material for heat-exchangers in nuclear hydrogen generation. The tensile properties, evaluated at different temperatures, indicate that both the yield strength and ultimate tensile strength were gradually reduced with increasing temperature. However, the ductility parameters were not significantly influenced by the testing temperature. While no failures were observed in stress corrosion cracking (SCC) tests in an acidic solution under a constant-load, the true failure stress (sigmaf) was significantly reduced under a slow-strain-rate condition using both smooth and notched specimens. The critical …

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On Using Block Principal Component Analysis For Reducing Gene-Expression Data Dimensions, Sang Hee Lee Jan 2005

On Using Block Principal Component Analysis For Reducing Gene-Expression Data Dimensions, Sang Hee Lee

UNLV Retrospective Theses & Dissertations

Since a microarray gene expression database contains a large number of variables and a relatively small number of samples, using and analyzing the databases require an intense, large-dimension computation method. Principal component analysis (PCA) is a useful tool to reduce the number of dimensions, and therefore, the complexity. PCA allows us to analyze the gene expression database with a relatively small data dimension without losing relevant information and increases the analytic visibility of the data. The initial computation using PCA, however, involves calculating a high-dimension covariance or correlation matrix and requires time and hardware resources which are limited in most …

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Residence Choices Of Hispanic Neighborhoods In Nevada, Qiong Li Jan 2005

Residence Choices Of Hispanic Neighborhoods In Nevada, Qiong Li

UNLV Retrospective Theses & Dissertations

A well-known characteristic of Hispanic in the U.S. is their tendency to concentrate their settlement area in distinct locations. This study merges aggregate data of localities with micro observations to estimate the joint decisions of residential location and homeownership choice for Hispanics. To address the possibility that the disturbances in the regression may be correlated within groups, we apply a bivarite probit framework clustered by localities (PUMAs), using the Public Use Micro Statistics of Census 2000 data for Nevada. The results suggests that Hispanics choose to live in Hispanic enclaves are characterized by lower income, less English fluency, lower educational …

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Identifying Low-Carb Dieter's Characteristics And Their Diet Practices During Business Travels, So Jung Lee Jan 2005

Identifying Low-Carb Dieter's Characteristics And Their Diet Practices During Business Travels, So Jung Lee

UNLV Retrospective Theses & Dissertations

The low carbohydrate diet phenomenon has recently evolved to such an extent that there is now extensive consumer demand for carbohydrate conscious dining options. The power of the recent movement is impacting all facets of the hospitality industry including restaurants, hotels, airlines and conventions. The purpose of this study is to identify business travelers' low carbohydrate diet practices and to understand their experiences with low-carbohydrate menus during business trips; This research identified low-carb dieters' characteristics and their diet practices during business trips. Results indicated that, compared to other dieters, low-carb dieters are older, more likely to be overweight or obese, …

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Semi-Active Control Techniques For Shock Isolation, Ganesh B Maganti Jan 2005

Semi-Active Control Techniques For Shock Isolation, Ganesh B Maganti

UNLV Retrospective Theses & Dissertations

In this thesis the problem of control of semi-active devices (MR damper, MR elastomer) for shock isolation systems are considered. Semi-active control systems combine the best features of both the passive and active control systems, offering the reliability of passive devices, yet maintaining the versatility and adaptability of fully active devices. First the question of stability and control of a two degree-of-freedom magnetorheological (MR) fluid damper shock isolation system is considered. It is shown that for any arbitrarily time varying input current, the system is absolutely stable. This explains the shock isolation capability of the MR damper system even with …

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The Buildings At The Center: Latter-Day Saint Tabernacles In The Mormon Culture Region, Aaron James Mcarthur Jan 2005

The Buildings At The Center: Latter-Day Saint Tabernacles In The Mormon Culture Region, Aaron James Mcarthur

UNLV Retrospective Theses & Dissertations

Tabernacles are a largely overlooked feature of communities in the Mormon Culture Region. Though the tabernacle on Temple Square in Salt Lake City has world-wide recognition, very little has been written about the other 78 that the Church of Jesus Christ of Latter-day Saints built between 1847 and 1953. This thesis discusses the religious, cultural, and social motivations behind the planning and construction of tabernacles, as evidenced by developments such as the Plat of the City of Zion and the Priesthood Reorganization of 1877, as well as the numerous uses of these buildings. The significance of the buildings in the …

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Attitudinal And Behavioral Assessments Of Generations X And Y At The Palms Casino Resort, Ch-A Mosley Jan 2005

Attitudinal And Behavioral Assessments Of Generations X And Y At The Palms Casino Resort, Ch-A Mosley

UNLV Retrospective Theses & Dissertations

Las Vegas area casino hotels have recently begun to vie for the attention and business of Generations X and Y. This is evidenced by the influx of night clubs, lounges, and party-like pool scenes in Strip properties. The purpose of the study is to utilize the Palms Casino Resort's young adult clientele to determine what attributes they find appealing about it. The data garnered through primary empirical research revealed implications for potential marketing initiatives and future research. This project was both quantitative and qualitative in nature.

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Justifying The Plaintiff's Receipt Of Punitive Damages, Marlisa Moschella Jan 2005

Justifying The Plaintiff's Receipt Of Punitive Damages, Marlisa Moschella

UNLV Retrospective Theses & Dissertations

This thesis addresses the punitive damages reform issue of whether or not the plaintiff should receive the award. Reformers argue the purposes of punitive damages would be better served with other distribution options; and prioritized societal gains, above the gains of the plaintiff. The various purposes of punitive damages show that receipt by the plaintiff is in accordance with original intentions of punitive damages and serves justice. The historical and modern purposes of punitive damages such as vengeance satisfaction, redeeming honor, repairing insult, and supporting 'private attorneys general,' are maintained by the plaintiff receiving damages. These purposes provide an important …

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Dorsal And Pectoral Fin Control Of A Biorobotic Autonomous Underwater Vehicle, Mukund Narasimhan Jan 2005

Dorsal And Pectoral Fin Control Of A Biorobotic Autonomous Underwater Vehicle, Mukund Narasimhan

UNLV Retrospective Theses & Dissertations

This thesis involves an in-depth research on the maneuvering of bio-robotic autonomous undersea vehicles (BAUVs) using bio-mimetic swimming mechanisms. Motivation was derived from the amazing flexibility and agility the fish inherit with the help of their pectoral and dorsal fins; In the first part of the thesis, control of BAUVs using dorsal fins is considered. The force produced by the cambering of the dorsal fins is used for control. An indirect adaptive controller is designed for depth tracking along constant trajectories even when the system parameters are not known. Next, for following time-varying trajectories, an adaptive control system for yaw …

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Petrogenesis Of Extracaldera Rhyolites At Yellowstone Volcanic Field: Evidence For An Evolving Silicic Magma System North Of Yellowstone Caldera, Nicole Marie Nastanski Jan 2005

Petrogenesis Of Extracaldera Rhyolites At Yellowstone Volcanic Field: Evidence For An Evolving Silicic Magma System North Of Yellowstone Caldera, Nicole Marie Nastanski

UNLV Retrospective Theses & Dissertations

Rhyolites erupted at 526--80 ka north of Yellowstone Caldera may record the most recent migration of the Yellowstone melting anomaly, yet their relation to the magma system that produced caldera-forming eruptions at 2.1, 1.3, and 0.64 Ma was previously unclear. New petrographic, geochronology, and geochemical data show that 10 of 12 rhyolites define a spatially (Norris-Mammoth corridor), temporally (326--80 ka), and chemically related group derived from a single magma system independent of the caldera-related magma system. These data are consistent with the establishment of a magma system of substantial longevity (>200 ka) and long magma residence times (up to …

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Design And Control Of A Smart Fin Using Piezoelectric Actuators, Surya Kiran Parimi Jan 2005

Design And Control Of A Smart Fin Using Piezoelectric Actuators, Surya Kiran Parimi

UNLV Retrospective Theses & Dissertations

The objective of this research work is to design and implement control algorithms for smart fin of a projectile, which is currently under development in the Army Research Laboratory (ARL). The smart fin is used to maneuver small aerial vehicles by controlling the rotation angle of the fin. The fin is activated by a composite laminated plate that has two active piezoelectric layers. The prototype of the smart fin is assembled using Macro Fiber Composite (MFC actuator model M8557, Smart Material Co); Control algorithms for rotating the fin when subject to external aerodynamic forces are proposed. These controllers use a …

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Analysis Of Logic Block Architectures And Functional Improvement Of Fine Grained Cells, Rohith Ramnath Jan 2005

Analysis Of Logic Block Architectures And Functional Improvement Of Fine Grained Cells, Rohith Ramnath

UNLV Retrospective Theses & Dissertations

The first objective of this research project was to evaluate the performance of various logic block architectures in FPGAs. Since logic blocks widely vary in size, functionality and complexity, we were motivated to explore them in detail. For our study, logic blocks from Actel, Altera, Quicklogic and Xilinx were chosen along with some designs discussed in the academia. These cells were either multiplexer based or look-up-table (LUT) based. Structural VHDL models of all these blocks were constructed and benchmarks circuits were mapped. Results at this stage suggested that, although the coarse grained cells occupied more area and showed poor utilization, …

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The Method Of Fundamental Solutions For Solving Wave Equations, Lourdes Jeanette Rivera Jan 2005

The Method Of Fundamental Solutions For Solving Wave Equations, Lourdes Jeanette Rivera

UNLV Retrospective Theses & Dissertations

In recent years, the method of fundamental solutions (MFS) has emerged as a novel meshless method in the scientific computing community. In the past, the MFS was essentially restricted to solving homogeneous elliptic equations. Recently, the MFS has gradually extended to solving various types of elliptic and time-dependent problems through the uses of radial basis functions (RBFs); In this thesis, we focus on solving wave equations through the MFS. Currently, there are two major approaches to solve the wave equation: (i) elimination of the time dependence by using the Laplace transform and (ii) discretization in time to approximate the time …

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Gamma-Aminobutyric Acid Inhibits Interleukin-1beta Stimulated Release Of Interleukin-6 From Rat C6 Glioma Cells: In Vitro Evidence For A Role Of P38 Map Kinase, Raghuram Royyuru Jan 2005

Gamma-Aminobutyric Acid Inhibits Interleukin-1beta Stimulated Release Of Interleukin-6 From Rat C6 Glioma Cells: In Vitro Evidence For A Role Of P38 Map Kinase, Raghuram Royyuru

UNLV Retrospective Theses & Dissertations

We investigated the pathway of IL-1beta stimulated IL-6 release and the involvement of different MAPK's effectors. We used three different MAPK inhibitors SB203580 for p38, SP600125 for JNK, and PD98059 for ERK kinases. We described the role of gamma-Aminobutyric acid (GABA) and GABAB receptor in the inhibition of IL-1beta signal transduction; Bioassay results suggest that SB203580 inhibited IL-6 release while the other two MAPK inhibitors had no effect. It also suggested GABA inhibits the IL-1beta stimulated release of IL-6. By Western analysis we found that IL-1beta activated p38 MAPK time dependent fashion and we saw a maximum stimulation occurred at …

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Effect Of A High Protein Diet On Glucose Tolerance In Rats, Roxanne Mary Sanchez Jan 2005

Effect Of A High Protein Diet On Glucose Tolerance In Rats, Roxanne Mary Sanchez

UNLV Retrospective Theses & Dissertations

The purpose of this study was to determine the effects of a high protein diet on glucose tolerance in the rat model. Nine Sprague Dawley rats received a high protein diet (65% protein, 35% fat) and eight rats consumed a standard chow diet over the course of eight weeks. An oral glucose tolerance test (OGTT) was performed at the end of the third and the seventh week to measure blood glucose and plasma insulin concentrations. The diet did not effect glucose tolerance in the first OGTT (t = 1.2095, p = .1226) or the second OGTT (t = -.9855, p …

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Immobilization Of Fission Iodine By Reaction With Fullerene Containing Carbon Compounds Or Insoluble Natural Organic Matter, Gregory Tye Schmett Jan 2005

Immobilization Of Fission Iodine By Reaction With Fullerene Containing Carbon Compounds Or Insoluble Natural Organic Matter, Gregory Tye Schmett

UNLV Retrospective Theses & Dissertations

Since the start of the nuclear age, weapons testing and commercial nuclear power plants have been producing radioactive iodine-129 as a fission by-product. Iodine-131 has a half-life of 8 days and is generally not deemed a serious storage problem. Iodine-129 has a half-life of sixteen million years and decays by Beta emission; The Department of Energy (DOE) has determined there are three major contributors to public radiation dose as a consequence of radionuclides releases. The three isotopes of major concern for the DOE are iodine-129, technetium-99 and neptunium-237 (129I, 99Tc, 237Np). DOE has a research and development program called the …

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Development Of An Instrument Designed To Measure Student Perception Of School Connectedness, Nicole Jennifer Smith Jan 2005

Development Of An Instrument Designed To Measure Student Perception Of School Connectedness, Nicole Jennifer Smith

UNLV Retrospective Theses & Dissertations

The purpose of this study was to design and validate an instrument to measure student perception of school connectedness. The intended use for this instrument was to evaluate school-based health interventions such as "Planned Approach to Healthier Schools" (PATHS; Lounsbery, Gast, & Smith, 2005), and to potentially examine other important correlates of student perception of school connectedness, such as attendance in school, referral rates, as well as school drop out and graduation. The development of the instrument included a series of steps which comprised (a) identification of a purpose, (b) specification of an underlying theory, (c) item development, (d) content …

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Cfd Modeling Of Compact Offset Strip-Fin High Temperature Heat Exchanger, Sundaresan Subramanian Jan 2005

Cfd Modeling Of Compact Offset Strip-Fin High Temperature Heat Exchanger, Sundaresan Subramanian

UNLV Retrospective Theses & Dissertations

This thesis deals with the development of a numerical model to predict the overall performance of an advanced high temperature heat exchanger (HTHX) design, up to 1000°C, for the production of hydrogen by the sulfur iodine thermo-chemical cycle. The present study considers an offset strip-fin type compact high temperature heat exchanger made of liquid silicon impregnated carbon composite (SiC). The ceramic matrix composite material (CMC) is manufactured by impregnating the silicon into the pores of the carbon composites. The prototype heat exchanger is designed to operate at a thermal power of 50 MW. The design is an offset strip-fin, hybrid …

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