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2004

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Synthesis Of A Novel Family Of Amide Derivatives Of Podocarpic Acid, Dao Nguyen Jan 2004

Synthesis Of A Novel Family Of Amide Derivatives Of Podocarpic Acid, Dao Nguyen

Electronic Theses and Dissertations

As a class, amides are of great interest in biological studies and pharmaceutical application. In this work, podocarpic acid, a natural tricyclic diterpene, derived from Podocarpus species, has been employed to form a novel family of amide derivatives which will later be studied for their potential as new drug leads. Novel amide derivatives of podocarpic acid were synthesized from podocarpic acid in three steps. The first step involved methylation with dimethylsulfate to form methyl-O-methylpodocarpate. This step was followed by iodination with iodine to give iodomethyl-O-methylpodocarpate. Finally amidation with various aliphatic amides using a copper catalyst yielded four amide derivatives of …

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Affordances In The Design Of Virtual Environments, David Charles Gross Jan 2004

Affordances In The Design Of Virtual Environments, David Charles Gross

Electronic Theses and Dissertations

Human-computer interaction design principles largely focus on static representations and have yet to fully incorporate theories of perception appropriate for the dynamic multimodal interactions inherent to virtual environment (VE) interaction. Theories of direct perception, in particular affordance theory, may prove particularly relevant to enhancing VE interaction design. The present research constructs a conceptual model of how affordances are realized in the natural world and how lack of sensory stimuli may lead to realization failures in virtual environments. Implications of the model were empirically investigated by examining three affordances: passability, catchability, and flyability. The experimental design involved four factors for each …

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Directory-Based Cache Coherence In Smtp Machines Without Memory Overhead Using Sparse Directories, Anton Kiriwas Jan 2004

Directory-Based Cache Coherence In Smtp Machines Without Memory Overhead Using Sparse Directories, Anton Kiriwas

HIM 1990-2015

As computing power has increased over the past few decades, science and engineering have found more and more uses for this new found computing power. With the advent of multiprocessor machines, we are achieving MIPS and FLOPS ratings previously unthought-of. Distributed shared-memory machines (DSM) are quickly becoming a powerful tool for computing, and the ability to build them from commodity off-the-shelf parts would be a great benefit to computing in general. In the paper entitled, "SMTp: An Architecture for Next-generation Scalable Multi-threading", Heinrich, et al. presents an architecture for a scalable DSM built from slightly modified machines capable of simultaneous …

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Modeling And Analysis Of Solar Arrays For Grid Connected Systems With Maximum Power Point Tracking, Adje Mensah Jan 2004

Modeling And Analysis Of Solar Arrays For Grid Connected Systems With Maximum Power Point Tracking, Adje Mensah

HIM 1990-2015

The shrinking of the world’s energy sources has prompted an unprecedented interest in renewable and clean energy sources such as photovoltaic (solar) array. Already popular in space and some industrial power system applications, photovoltaic arrays have yet to become a viable source of energy for most terrestrial applications. For several decades now, engineers have been striving to design reliable and affordable solar array based power systems. One popular approach to achieve reliability is the integration of Maximum Power Point Tracking (MPPT) technology in solar power system design. The purpose of this study was to gain more insight into the nature …

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Effect Of Source Water Blending On Copper Release In Pipe Distribution System: Thermodynamic And Empirical Models, Weizhong Xiao Jan 2004

Effect Of Source Water Blending On Copper Release In Pipe Distribution System: Thermodynamic And Empirical Models, Weizhong Xiao

Electronic Theses and Dissertations

This dissertation focuses on copper release in drinking water. Qualitative and quantitative assessment of Cu and Fe corrosion by process water quality was assessed over one year in a field study using finished waters produced from seven different treatment process and eighteen pilot distribution systems (PDSs) that were made from unlined cast iron and galvanized steel pipes, and lined cement and PVC pipes taken from actual distribution systems. Totally seven different waters were studied, which consisted of three source waters: groundwater, surface, and simulated brackish water designated as G1, S1, and RO. With certain pre-established blending ratios, these three waters …

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Consequences Of Reservoir Drainage On Downstream Water Chemistry, Suspended Sediment, And Nutrients, Southwest Missouri, Mark W. Bowen Jan 2004

Consequences Of Reservoir Drainage On Downstream Water Chemistry, Suspended Sediment, And Nutrients, Southwest Missouri, Mark W. Bowen

Graduate Theses/Dissertations

Construction and subsequent draining of reservoirs can have dramatic affects on the release of nutrients and sediments to waterways. This study describes how the temporary draining of a small reservoir for dam repair influences downstream water quality. The Valley Mill Reservoir has a surface area of 6.1 hectares and volume of 150,000 m3 when filled. Water chemistry monitoring and water sampling were performed at six sites during baseflow and ten sites during runoff events for one year. Water samples were analyzed for total nitrogen (TN), total phosphorous (TP), and total suspended sediment (TSS) concentrations. Results indicate that draining of Valley …

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Dordt College 2004-2005 Catalog, Dordt College. Registrar's Office Jan 2004

Dordt College 2004-2005 Catalog, Dordt College. Registrar's Office

Academic Catalogs

Academic Catalog for 2004-05

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Measuring Polynomial Invariants Of Multiparty Quantum States, Matthew S. Leifer, N. Linden, A. Winter Jan 2004

Measuring Polynomial Invariants Of Multiparty Quantum States, Matthew S. Leifer, N. Linden, A. Winter

Mathematics, Physics, and Computer Science Faculty Articles and Research

We present networks for directly estimating the polynomial invariants of multiparty quantum states under local transformations. The structure of these networks is closely related to the structure of the invariants themselves and this lends a physical interpretation to these otherwise abstract mathematical quantities. Specifically, our networks estimate the invariants under local unitary (LU) transformations and under stochastic local operations and classical communication (SLOCC). Our networks can estimate the LU invariants for multiparty states, where each party can have a Hilbert space of arbitrary dimension and the SLOCC invariants for multiqubit states. We analyze the statistical efficiency of our networks compared …

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Web Usage Mining: Algorithms And Results, Ee Peng Lim, Yew-Kwong Woon, Wee-Keong Ng Jan 2004

Web Usage Mining: Algorithms And Results, Ee Peng Lim, Yew-Kwong Woon, Wee-Keong Ng

Research Collection School Of Computing and Information Systems

No abstract provided.

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Laboratory-Scale Evaluation Of Incandescent And Compact Florescent Lamps For Poultry House Lighting, Leanne Gabriel, Donald M. Johnson Jan 2004

Laboratory-Scale Evaluation Of Incandescent And Compact Florescent Lamps For Poultry House Lighting, Leanne Gabriel, Donald M. Johnson

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

This laboratory-scale study compared 1000- and 2000-h rated 60W incandescent lamps and 6000-h rated 60W-equivalent compact florescent lamps over 6000 h of simulated broiler-house operation. The four original 1000-h incandescent lamps were replaced 22 times and the four 2000-h incandescent lamps were replaced 14 times. None of the four compact florescent lamps failed during the 6000-h experiment, although one was broken due to human error. Both types of incandescent lamps had significantly higher (p < .0001) mean illuminance (lx) than did the compact florescent lamps. The compact florescent lamps used significantly less (p < .0001) power (W) and had significantly higher (p < .0001) efficiency (lx/W) than the incandescent lamps. Despite a higher initial purchase price, the total cost (purchase + replacement + electrical) of operating compact florescent lamps was approximately 36% lower than the total cost of operating either type of incandescent lamp over the 6000 h period. The results of this study indicate that even at a least-cost price for electricity ($0.04/kW/h), growers can reduce total broiler-house lighting costs by replacing incandescent lamps with compact florescent lamps.

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Method Analysis Of Laboratory Measures Of Stream Sediment And Water Phosphorus Equilibrium, Anna L. Erickson, Stephanie M. Williamson, Brian E. Haggard Jan 2004

Method Analysis Of Laboratory Measures Of Stream Sediment And Water Phosphorus Equilibrium, Anna L. Erickson, Stephanie M. Williamson, Brian E. Haggard

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

Elevated phosphorus concentrations in aquatic ecosystems of northwest Arkansas prompted an investigation of the effects of sample preparation and extraction methods on laboratory measures of sediment-phosphorus interactions. Two streams of contrasting phosphorus (P) concentrations were selected to determine the effect of using a CaCl2 solution instead of filtered stream water, refrigerated or dried sediments instead of fresh wet sediments, and vortexing the suspensions instead of shaking them. Sediment equilibrium P concentration (EPC0) and P buffering capacity (K) were used to determine differences in extraction methods. EPC0 and K from extractions using fresh sediments and a CaCl2 solution matching the electrical …

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Determination Of Crystalline Content Gradients In Cold-Drawn Poly-L-Lactic Acid Films By Dsc, Anne O'Connor, A. Riga, John F. Turner Ii Jan 2004

Determination Of Crystalline Content Gradients In Cold-Drawn Poly-L-Lactic Acid Films By Dsc, Anne O'Connor, A. Riga, John F. Turner Ii

Chemistry Faculty Publications

Poly-L-lactic acid (PLLA) is a semi-crystalline, optically active, biodegradable, and biocompatible polymer that has been utilized extensively in biomedical applications as an implantable artificial cell scaffold material. In its crystalline form, PLLA is piezoelectric and it has been implicated in the enhancement of electromechanically induced osteogenesis in vivo. In its amorphous state, however, PLLA does not exhibit piezoelectricity. By uniaxially cold-drawing the polymer, PLLA can be endowed with varying degrees of piezoelectricity. It is important to understand the crystalline architecture of drawn PLLA so that the osteogenic potential imparted by piezoelectricity, if any, can be differentiated from the effects of …

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Assessment And Restoration Of A Neighborhood Wetland Invaded By Exotic Plant Species, Ryan Neal, Kimberly R. Payne, Lorena Moreno, Graham Duffy, Jonathan Peck, Mary C. Savin Jan 2004

Assessment And Restoration Of A Neighborhood Wetland Invaded By Exotic Plant Species, Ryan Neal, Kimberly R. Payne, Lorena Moreno, Graham Duffy, Jonathan Peck, Mary C. Savin

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

The University of Arkansas Crop, Soil, and Environmental Sciences (CSES) Club adopted a local wetland in the spring of 2002 through the Fayetteville Parks and Recreation Department. This project has allowed students to interact with local community and governmental organizations as well as other academic departments within the university. Students have gained valuable laboratory and field experience through characterizing hydric soils, identifying bird and plant species, and analyzing water quality, soil nutrients, and microbial biomass. Under the main goal of restoring the wetland, the club has outlined both short and long-term objectives including soil and water assessments; removal of two …

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Content Analysis Of The Leading General Academic Databases, Kelly D. Blessinger, Maureen Olle-Lajoie Jan 2004

Content Analysis Of The Leading General Academic Databases, Kelly D. Blessinger, Maureen Olle-Lajoie

Faculty Publications

Title lists from the three leading general academic databases were compared to evaluate journal content. Some of the elements that were analyzed include subject coverage, the quality of titles provided, accessibility issues, and trends over time for these databases. While database title lists are now readily available on the Internet for comparison, as our article illustrates, these lists need further evaluation for proper assessment.

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Red, White, Blue, And Green: Politics And The Environment In The 2004 Environment, James R. Lyons, Heather S. Kaplan, Fred Strebeigh, Kathleen E. Campbell Jan 2004

Red, White, Blue, And Green: Politics And The Environment In The 2004 Environment, James R. Lyons, Heather S. Kaplan, Fred Strebeigh, Kathleen E. Campbell

Yale School of the Environment Publications Series

No abstract provided.

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Nebraska Summary: S460 Case-Ih Jx65, Nebraska Tractor Test Lab Jan 2004

Nebraska Summary: S460 Case-Ih Jx65, Nebraska Tractor Test Lab

Nebraska Tractor Tests

ABOUT THE TEST REPORT AND USE OF THE DATA The test data contained in this report are a tabulation of the results of a series of tests. Due to the restricted format of these pages, only a limited amount of data and not all of the tractor specifications are included. The full OECD report contains usually about 30 pages of data and specifications. The test data were obtained for each tractor under similar conditions and therefore, provide a means of comparison of performance based on a limited set of reported data. EXPLANATION OF THE TEST PROCEDURES Purpose The purpose of …

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An Assessment Of The Coastal Training Program Needs Of The Anerr Region, Claudette Robey, Kevin O'Brien, Kevin O'Brien, Michael Mcgoun, Michael J. Tevesz Jan 2004

An Assessment Of The Coastal Training Program Needs Of The Anerr Region, Claudette Robey, Kevin O'Brien, Kevin O'Brien, Michael Mcgoun, Michael J. Tevesz

All Maxine Goodman Levin School of Urban Affairs Publications

A series of focus groups were conducted throughout northwest Florida to obtain input from coastal decision-makers into the design and development of a coastal resources management training program for the Apalachicola National Estuarine Research Reserve (ANERR). The focus groups were comprised of a cross section of coastal and environmental professionals who make decisions affecting coastal and watershed areas. The focus group decision-makers were primarily employed in the public sector (federal, state, local, governmental, nonprofit, or academic), with nearly half of the participants having between six and 15 years of professional experience.

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Coastal Training Strategy For The Ohio Lake Erie Basin, Claudette Robey, Kevin O'Brien, Kirstin S. Toth Jan 2004

Coastal Training Strategy For The Ohio Lake Erie Basin, Claudette Robey, Kevin O'Brien, Kirstin S. Toth

All Maxine Goodman Levin School of Urban Affairs Publications

An analysis of the market for coastal resources management training in Ohio’s Lake Erie basin identified the challenges faced by coastal decision-makers and the disparities currently existing within this market. The primary challenges identified were in the quality of instruction and in the types of training provided. Disparities indicated were with coordination, equipment and logistical factors, external and internal marketing and promotional assistance, funding, personnel and staff assistance, and legislative and regulatory concerns. These disparities are indications of opportunities to establish partnerships and collaborative networks to facilitate coordinated training initiatives; to re-examine and develop course content and locations to better …

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A Summary Of The Findings Of The Coastal Training Market Analysis, Claudette Robey, Kevin O'Brien, Daniel Baracskay Jan 2004

A Summary Of The Findings Of The Coastal Training Market Analysis, Claudette Robey, Kevin O'Brien, Daniel Baracskay

All Maxine Goodman Levin School of Urban Affairs Publications

The Apalachicola National Estuarine Research Reserve (ANERR) is located in Franklin County on the Florida panhandle within the 19,600-square-mile Apalachicola-Chattahoochee-Flint watershed. Spanning more than 246,000 acres, the Reserve includes areas of Franklin, Gulf, Calhoun, and Liberty counties. The Reserve received its designation in 1979, and is a federal/state partnership with the Florida Department of Environmental Protection.

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Trends Analysis Of Coastal Training Programs In The National Estuarine Research Reserve System, Claudette Robey, Kevin O'Brien, Kirstin S. Toth, Daniel Baracksay, Michael Mcgoun, Wendy A. Kellogg, Michael J. Tevesz Jan 2004

Trends Analysis Of Coastal Training Programs In The National Estuarine Research Reserve System, Claudette Robey, Kevin O'Brien, Kirstin S. Toth, Daniel Baracksay, Michael Mcgoun, Wendy A. Kellogg, Michael J. Tevesz

All Maxine Goodman Levin School of Urban Affairs Publications

The National Estuarine Research Reserves (NERRS) Coastal Training Program (CTP) is a system-wide training program that aims to increase informed decision-making related to coastal resource management at local and regional levels. The CTP serves as the NERRS flagship program for knowledge and information transfer, and provides an effective vehicle to ensure that science-based knowledge and skills get into the hands and minds of those individuals making decisions about the coast on a regular basis in a professional or volunteer capacity. At the local level, Reserve staff conducts intensive planning to develop targeted training programs that complement other training efforts within …

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Coastal Training Program: Advisory Council Protocol, Claudette Robey, Kevin O'Brien Jan 2004

Coastal Training Program: Advisory Council Protocol, Claudette Robey, Kevin O'Brien

All Maxine Goodman Levin School of Urban Affairs Publications

The Old Woman Creek National Estuarine Research Reserve, Ohio Department of Natural Resources Coastal Management Program, and Ohio Sea Grant College Program (the Partners) are developing a comprehensive Coastal Training Program (CTP) to assist Ohio’s coastal decision-makers. The Partners are developing a coordinated and collaborative training strategy and information network that will serve as the framework for local, regional, state, and national coastal resources management training providers.

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ข่าว & กิจกรรมสิ่งแวดล้อม Jan 2004

ข่าว & กิจกรรมสิ่งแวดล้อม

Thai Environment

No abstract provided.

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มลพิษทางอากาศกับสุขภาพประชาชน : กรณีเมืองเทลอาวีฟและแอฌดอด, กนกธร ดำรงวัฒน Jan 2004

มลพิษทางอากาศกับสุขภาพประชาชน : กรณีเมืองเทลอาวีฟและแอฌดอด, กนกธร ดำรงวัฒน

Thai Environment

No abstract provided.

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วิทยาศาสตร์เทคโนโลยีที่รักษาสิ่งแวดล้อม พร้อมประหยัดพลังงาน, กนกธร ดำรงวัฒน Jan 2004

วิทยาศาสตร์เทคโนโลยีที่รักษาสิ่งแวดล้อม พร้อมประหยัดพลังงาน, กนกธร ดำรงวัฒน

Thai Environment

No abstract provided.

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สร้างโลกสวย Jan 2004

สร้างโลกสวย

Thai Environment

No abstract provided.

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Game Console Modification Chips: The Effect Of Fair Use And The Digital Millennium Copyright Act On The Circumvention Of Game Console Security Measures, Vijay G. Brijbasi Jan 2004

Game Console Modification Chips: The Effect Of Fair Use And The Digital Millennium Copyright Act On The Circumvention Of Game Console Security Measures, Vijay G. Brijbasi

Nova Law Review

No abstract provided.

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Bgsu Graduate College 2004-2005 Catalog, Bowling Green State University Jan 2004

Bgsu Graduate College 2004-2005 Catalog, Bowling Green State University

Course Catalogs

Bowling Green State University graduate catalog for 2004-2005.

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On A Certain Class Of Bessel Integrals, Ali A. Al-Jarrah, A. Al-Momani Jan 2004

On A Certain Class Of Bessel Integrals, Ali A. Al-Jarrah, A. Al-Momani

Turkish Journal of Mathematics

There are many old results of integrals involving Bessel functions, currently available in handbooks, but we found no recourse in the well-known references to how they were established. In this paper, we attempt to have a clear way of proving some of these results. In fact, we consider a certain class of Bessel integrals where we prove that such integrals vanish under certain conditions. To this end some theorems regarding this class of integrals with their proofs are put forward. A computer algorithm is provided to implement some of our results. The result in this paper extend the work in …

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A Note On Groups With All Subgroups Subnormal, Ahmet Arikan, Tahi̇re Özen Jan 2004

A Note On Groups With All Subgroups Subnormal, Ahmet Arikan, Tahi̇re Özen

Turkish Journal of Mathematics

We prove that if G is a periodic group with all subgroups subnormal, and if for every x, y \in G, ^{G} is an FC-group, then G is nilpotent.

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Forensic And Biological Applications Of Vibrational Spectroscopy, Edita Botonjic Jan 2004

Forensic And Biological Applications Of Vibrational Spectroscopy, Edita Botonjic

Open Access Dissertations

Determination of the age of a bloodstain can be used to establish the time when a crime was committed. As blood ages, deoxyhemoglobin (HbO 2) is converted into methemoglobin (MetHb), which is evident by the color change from red to brown. Fluctuations in temperature will cause blood to age at a non-constant rate. It has been shown that higher temperatures cause deoxyhemoglobin to oxidize more rapidly to methemoglobin. Human blood from vein and capillary vessels was used in this investigation. The samples were prepared by placing blood on various substrates such as gauze and watch glasses. Mid-IR and near-IR spectra …

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