Digital Commons Network^™

Experimental Relationship Between Tire's Structural Wave Propagation And Sound Radiation, J Stuart Bolton, Kwanwoo Hong, Kiho Yum

Publications of the Ray W. Herrick Laboratories

No abstract provided.

Measurement Of Transmission Loss Of Materials Using A Standing Wave Tube, J Stuart Bolton, Oliviero Olivieri, Taewook Yoo

Publications of the Ray W. Herrick Laboratories

No abstract provided.

Engineering Division, Kathy Nordhaus

Sci-Tech News

No abstract provided.

Androgen-Regulated Formation And Degradation Of Gap Junctions In Androgen-Responsive Human Prostate Cancer Cells., Shalini Mitra, Lakshmanan Annamalai, Souvik Chakraborty, Kristen E. Johnson, Xiao-Hong Song, Surinder K. Batra, Parmender P. Mehta

Journal Articles: Biochemistry & Molecular Biology

The constituent proteins of gap junctions, called connexins (Cxs), have a short half-life. Despite this, the physiological stimuli that control the assembly of Cxs into gap junctions and their degradation have remained poorly understood. We show here that in androgen-responsive human prostate cancer cells, androgens control the expression level of Cx32-and hence the extent of gap junction formation-post-translationally. In the absence of androgens, a major fraction of Cx32 is degraded presumably by endoplasmic reticulum-associated degradation, whereas in their presence, this fraction is rescued from degradation. We also show that Cx32 and Cx43 degrade by a similar mechanism. Thus, androgens regulate …

Conceptual Framework For An Optimal Labour Market Information System: Final Report, James F. Woods, Christopher J. O'Leary

Upjohn Institute Technical Reports

No abstract provided.

The Center For Tmdl And Watershed Studies: Creating Resources And Tools For Watershed Management, Bl Benham

Journal of Extension

The Center for TMDL and Watershed Studies (the Center) is committed to improving the quality and effectiveness of watershed planning processes, including total maximum daily loads (TMDLs). The Center conducts basic and applied research, and provides educational programming tailored to the specific needs of stakeholders, government personnel, and technical professionals. Personnel associated with the Center provide expertise on scientific, engineering, sociological, economic, and policy issues related to watershed management and the TMDL process. The Center is actively involved in developing TMDLs and TMDL implementation plans in situations where the methodology and guidance to develop such deliverables are not well defined.

Edge Curling Effect On Interface Delamination Of Concrete Overlays For Bridge Decks, Tao Hong

Graduate Theses, Dissertations, and Problem Reports (ETD)

Deterioration of reinforced concrete bridge decks caused by various environmental conditions and traffic loads is a problem of significant concern. A protective thin overlay of about 2-inches is typically placed over newly constructed concrete bridge decks. Concrete overlay mixtures offer high resistance to traffic loads and environmental attacks, and often serve as leveling finished surfaces. A critical problem however has been the debonding and delamination propagation of the interface between overlay and substrate concrete, as observed in several bridges in West Virginia. Several studies indicated that during early-age of overlay curing, the debonding usually starts at corners or edges of …

Point Source Of Pollutants In The Houston Ship Channel, Adetoun Aboaba

Theses (Pre-2016)

Water, the most abundant compound, can become easily polluted owing to its high polarity. Water pollution can be classified into two main categories namely point source of pollution in which the source of pollutants can be identified and non-source of pollution in which the source of pollutants cannot be traced or identified to a specific location. This study is focused on point source of pollution. A typical example is the Houston Ship Channel, which has being subjected to considerable amounts of chemical pollutants due to high levels of industrial and transportation activities. Scientists today have made the study of this …

Prevalence Of Malnutrition Among End-Stage Renal Disease Patients In Jordanian Hospitals, Reema F. Tayyem, Iman M. Ahmad

Saudi Medical Journal

No abstract provided.

Gridfields: Model-Driven Data Transformation In The Physical Sciences, Bill Howe

Dissertations and Theses

Scientists' ability to generate and store simulation results is outpacing their ability to analyze them via ad hoc programs. We observe that these programs exhibit an algebraic structure that can be used to facilitate reasoning and improve performance. In this dissertation, we present a formal data model that exposes this algebraic structure, then implement the model, evaluate it, and use it to express, optimize, and reason about data transformations in a variety of scientific domains.

Simulation results are defined over a logical grid structure that allows a continuous domain to be represented discretely in the computer. Existing approaches for manipulating …

Monthly Accomplishments For Turnbull National Refuge, December 2006, Turnbull National Wildlife Refuge

Turnbull National Wildlife Refuge Reports

A monthly report of accomplishments at Turnbull National Wildlife Refuge written by Project Leader Nancy Curry.

Investigation Of Knock In Gaseous Fuels In The Presence Of Diluents, Roshan Ashok Rodrigues

Masters Theses

Recent energy security and environmental concerns have prompted growing interest into utilization of alternative fuels such as, natural gas and landfill gas. These gaseous fuels contain significant amount of diluents in the fuel composition, such as carbon dioxide, nitrogen, water vapor and other trace gases, which vary by geographical location. Successful engine operation is limited by a phenomenon called "knock", which occurs due to auto-ignition of the end gas ahead of the flame front, and therefore, needs to be investigated with the utilization of these gaseous fuels.

The present contribution discusses the experimental set-up, procedure and results of the investigation …

The Analysis Of Ceramic Symbolism From The First Street Site In Barbados, Aya Hashimoto

Masters Theses

The expression of race and racism in material culture is of increasing interest in historical archaeology ( e.g., Epperson 1990, 1999, 2000; Mullins 1996, 1999). This study investigates 6 ceramic sherds from one vessel associated with a white urban domestic site on First Street, in Holetown Barbados. This vessel conveys a racist message. A black slave in a loincloth serving tea to a white person is transfer printed on the ceramic. The ceramic seems to be an annular designed pearlware from England in the first half of the 19^th century.

By interpreting the meanings of the ceramic decoration, this …

Incisal Dental Microwear Of The Prehistoric Point Hope Communities: A Dietary And Cultural Synthesis, Kristin L. Krueger

Masters Theses

The prehistoric coastal communities of Point Hope, Alaska have been considered important Arctic archaeological sites since their initial excavations in 1939. The majority of the archaeological artifacts are grouped into two temporally distinct cultural components, the Ipiutak (2100-1500BP) and the Tigara (800-300BP). Although debated, Arctic archaeologists have suggested that the Ipiutak depended heavily on land mammals with only seasonal reliance on sea mammals, whereas the Tigara relied primarily on sea mammals including whales. While both groups clearly utilized foraging subsistence economies, the contrasts in their food acquisition strategies would have placed different demands on the males and females, particularly with …

A Statistical Analysis Of The Distribution Of Roads Salt In Blueberry Farm Soils Of Van Buren County, Michigan, Melissa M. Kovach

Masters Theses

The purpose of this research is to compare and analyze the leaching of road salt (sodium chloride) in soils of blueberry farms. Due to recent events in Ottawa County, Michigan, road salt is increasingly being blamed for blueberry production loss. Sodium chloride is harmful because once a significant amount of salt enters the soil profile the salt is unable to be flushed out, and reduces the chance for nutrients to reach the plant for effective growth. This study tested the farms' soils for salinity before winter (October 2005), during winter (March 2006) and after winter (May 2006) to determine if …

Computer Model To Select Leed Certification For Building Projects, Ruba Mirghani Mohammed

Masters Theses

According to the US Green Building Council (USGBC) residential and commercial buildings in the United State consume huge amounts of natural resources; pollute the environment, and generate large amounts of waste, all of which affect the environment, economy, public health, and productivity. As a result, USGBC committees developed the Leadership in Energy and Environmental Design (LEED) rating system to help professionals improve the quality of buildings and lessen their impact on the environment.

The (LEED) Green Building Rating System is a point-based system for certifying the level of a building's sustainability. There are four LEED certification categories: (1) Certified, (2) …

Investigation Of Soft Failure Of Small Form Factor Hdd Under Forced Vibration, K. T. Chua, A. Yudhanto, E. H. Ong, J. Q. Mou

Mechanical and Aerospace Engineering Faculty Research & Creative Works

As small form factor hard disk drives (HDD) are increasingly used in portable consumer devices, the performance of the HDD in daily activity is highly concerned. In this paper, the soft failure of the hard disk drive under forced vibration is investigated. To investigate the cause of the soft failure, experimental frequency analysis was conducted. Modal analysis of HDD was completed by experiment and verified by FEM simulations and the result was compared to the frequency response result. Studies show that the vibration modes of head suspension assembly (HSA) and disk platter at higher resonant frequencies do not directly relate …

Development Of A Numerical Model Of A Two-Dimensional Inertial Gas Separator, Henry Z. Graham Iv

Graduate Theses, Dissertations, and Problem Reports (ETD)

The separation of gases is required for a variety of applications such as purification for industrial processes, natural gas production, isotope formation, etc. Gas separation is a costly expenditure for businesses, so new and improved methods are being continuously investigated. Separation techniques related to the method in this thesis are diffusion separators such as mechanical centrifuges, vortexes and the use of shock waves to cause the separation based on the molecular weight of the different gases. These methods and others are constantly being investigated and improved to increase their effectiveness.;The purpose of this thesis was to determine if the design …

Manufacturing, Testing, And Evaluation Of Structural Products With Recycled Polymers, Santosh Amarnath Varthakavi

Graduate Theses, Dissertations, and Problem Reports (ETD)

Use of recycled plastics started gaining momentum in the U.S. in 1980s due to growing environmental concerns and decreasing landfill capacities. Thermoplastics make up to 80% of the plastics produced today and are widely used in consumer, automotive, and electronic industries. Recycled plastics are being researched and employed for several non-structural and limited structural applications. However, their widespread usage will depend on developing mass manufacturing techniques, value added structural products, and cost effective processing methods. This study focuses on developing and evaluating several structural products such as rectangular grids, rectangular ribbed panels, hexagonal ribbed panels, signposts, signboards, and window panels …

An Intelligent Portfolio Management Approach To Gas Storage Field Deliverability Maintenance And Enhancement, Kazim A. Malik

Graduate Theses, Dissertations, and Problem Reports (ETD)

The main goal of this thesis is to modify and apply the state-of-the-art intelligent, optimum portfolio management to the gas storage field in order to optimize the return on investment associated with well remedial operations. It continues the development of a methodology for candidate selection and stimulation design and optimization using Artificial Intelligence techniques. The project used the data of an actual gas storage field to test the results.;The project data include Well-bore, Completion, Perforation, Stimulation, Well-test and Reservoir Data. The software developed in parallel with this selection methodology includes an easy to use interface that allows the user to …

An Evaluation Of The Bailey Method To Predict Voids In The Mineral Aggregate, Craig Mason

Graduate Theses, Dissertations, and Problem Reports (ETD)

The Bailey Method was developed by Robert Bailey of the Illinois State DOT. It was intended to be a tool to predict changes in voids in the mineral aggregate (VMA) resulting from gradation alterations in compacted asphalt concrete samples. This research evaluates the changes in VMA due to gradation alterations of four contractors' mix designs. By providing a tool to predict VMA, a desired gradation for asphalt mixtures can be developed to create a strong aggregate skeleton for rut resistance, durability, and adequate VMA.;The objective of this research was to evaluate the Bailey Method to predict voids in the mineral …

A Model Of Stabilizer Roll Bearing For A Continuous Hot-Dip Galvanizing Line, Vishnu V. Rachamalla

Graduate Theses, Dissertations, and Problem Reports (ETD)

The short service life of the hardware inside the molten zinc pot is often the cause for the unscheduled shutdown of a galvanizing line. The lifetime of the hardware used in these lines is not only a function of materials used but also on factors such as line speed, sheet tension, bearing contact pressure, bearing alignment, zinc pot temperature, corrosion as a function of pot chemistry, and surface finish of the materials used. Dr. James Snider has developed a comprehensive data file on the wear rate and corrosion properties of currently available bearing materials. Dr. Snider's dissertation research as well …

Express Risk Assessment For The Dispersion Of Aerosols In An Urban Environment Using Probabilistic Implicit Tracking, Steven Lee Rowan

Graduate Theses, Dissertations, and Problem Reports (ETD)

The dispersion or transport of an airborne aerosol, whether the result of pollution or terrorist attack, is a topic of much interest to researchers and governmental officials in the United States. Due to this, there have been numerous efforts to develop accurate aerosol dispersion models utilizing computational fluid dynamics (CFD) and Lagrangian Particle Dynamics (LPD) in order to predict how an aerosol-suspended material will propagate in an urban environment. However, the complexity of these models require significant amounts of computational resources and are not practical for quickly modeling an actual event.;In this study, a stochastic simulation of Probabilistic Implicit Tracking …

An Evaluation Of Current West Virginia Specifications And Construction Methods Regarding The Density Of Hot Mix Asphalt, Andrew Rudolph

Graduate Theses, Dissertations, and Problem Reports (ETD)

Pavement performance depends on the quality of the material, the mix design, and construction. The objectives of pavement construction are to place the material with a smooth surface, and compacted to the target density. Inadequate density permits water to enter the pavement leading to premature distress. It also can contribute to rutting as the pavement densify. A surface that is too dense is also prone to rutting.;This research evaluated methods for: measuring density, quality control, and longitudinal joint construction. Density specifications for West Virginia and surrounding states were reviewed to assess the compaction requirements for hot mix asphalt (HMA).;This research …

A Geostatistical Calculation Of The Coal Mine Roof Rating, Matthew A. Petrovich

Graduate Theses, Dissertations, and Problem Reports (ETD)

In this thesis, the need for an efficient and easy to use program which calculates a Coal Mine Roof Rating (CMRR) over a spatial area is established. In response to this need, a program which enables for the geostatistical calculation of the CMRR over a spatial area was developed as an engineering tool to quantify the geo-mechanical stability of the roof rock within the bolted horizon of a coal mine through the utilization of one of the more widely available geologic model data formats.;The CMRR program utilizes the popular AutoCAD/SurvCADD platform and grid data format as a foundation for inputting …

The Study Of Down-Hole Hydro-Cyclone Efficiency In Oil Wells Using Computational Fluid Dynamics, Ahmed A. Yusuf

Graduate Theses, Dissertations, and Problem Reports (ETD)

Water is by far the largest waste stream associated with oil and gas production and it is unimaginable to find an oil reservoir absolutely free from connate water. Water management has become an important issue of hydrocarbon production, since the produced water increases as the field grows older and the cost of water handling, such as separation, treatment and repair is dramatically increasing. Down-Hole Separation (DOWS) and re-injection results in the production of oil to the surface, while portions of water are injected to the underground formation without ever being lifted to the surface.;DOWS depends on geological characteristics of the …

Assessment And Evaluation Of Noise Controls On Roof Bolting Equipment And A Method For Predicting Sound Pressure Levels In Underground Coal Mining, Rudy J. Matetic

Graduate Theses, Dissertations, and Problem Reports (ETD)

Over-exposure to noise remains a widespread and serious health hazard in the U.S. mining industries despite 25 years of regulation. Every day, 80% of the nation's miners go to work in an environment where the time weighted average (TWA) noise level exceeds 85 dBA and more than 25% of the miners are exposed to a TWA noise level that exceeds 90 dBA, the permissible exposure limit (PEL). Additionally, MSHA coal noise sample data collected from 2000 to 2002 show that 65% of the equipment whose operators exceeded 100% noise dosage comprise only seven different types of machines; auger miners, bulldozers, …

Identifying *Assessment Practices In Undergraduate Accounting Programs, Anna L. Lusher

Graduate Theses, Dissertations, and Problem Reports (ETD)

The researcher conducted a survey of 786 baccalaureate accounting programs in the United States to determine the content and structure of their assessment plans. The study focused on five essential workplace skills: critical thinking, information literacy, oral communication, problem solving, and written communication. It examined the accounting programs and related assessment plans to determine whether the identified skills were integrated into the curriculum and were identified as learning outcomes in the assessment process. The study evaluated how faculty assess students' skills and how assessment results are used to make changes in programs and to improve student learning. The research also …

Lossless Compression And Neuron Structure Extraction For Fluorescence Microscopy Confocal Neuron Images, Yong Zhang

Graduate Theses, Dissertations, and Problem Reports (ETD)

To study the development of nervous systems, biologists are interested in neurite outgrowth, differentiation, synapse formation, and plasticity. High throughput neuron image processing is an important method for drug screening and quantitative neurobiological studies. The power of high-throughput processing comes from the automated fluorescence microscopy imaging techniques that make it possible and facile to visualize the complicated biological processes on the cellular and molecular levels and allow fast and cheap acquisition of such imaging data. With this method, a huge number of images are generated, with resolutions at length scales that are small enough to resolve neuron structures. Thus, one …

Dynamic Model Of Circulating Fluidized Bed, Yue Huang

Graduate Theses, Dissertations, and Problem Reports (ETD)

Circulating fluidized beds (CFBs) are used in many processes in the chemical industry to reduce pollution and increase efficiency. Optimization and control of CFBs are very important and require an accurate, real time, dynamic model to describe and quantify the process.;The present work focuses on modeling the transient behavior of large CFB units, whose flow characteristics were shown to yield C-shaped voidage profiles using cork as the fluidized material and air at ambient conditions.;The riser is modeled in two ways: (1) as a set of well-mixed tanks connected in series; (2) as a 1-D axisymetric cluster flow. The tanks-in-series model …