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Iron Phosphate Compositions For Containment Of Hazardous Metal Waste, D. E. Day

Materials Science and Engineering Faculty Research & Creative Works

An improved iron phosphate waste form for the vitrification, containment and long-term disposition of hazardous metal waste such as radioactive nuclear waste is provided. The waste form comprises a rigid iron phosphate matrix resulting from the cooling of a melt formed by heating a batch mixture comprising the metal waste and a matrix-forming component. The waste form comprises from about 30 to about 70 weight percent P205 and from about 25 to about 50 weight percent iron oxide and has metals present in the metal waste chemically dissolved therein. The concentration of iron oxide in the waste form along with …

1998 - The Third Annual Symposium Of Student Scholars

Symposium of Student Scholars Program Books

The full program book from the Third Annual Symposium of Student Scholars, held on May 8th, 1998. Includes abstracts from the presentation and posters.

The Effects Of Beryllium Additions On The Oxidation Of Nickel Aluminide And Titanium Aluminide Based Intermetallics, R. H. Hanrahan Jr., Katherine C. Chen, M. P. Brady

Materials Engineering

The effects of Be additions on the oxidation behavior of β-NiAl in moist air at 1000°C and borderline alumina-forming y (TiAI) + Laves Ti-Al-Cr based alloys at 800°C and 1000°C in dry and moist air were investigated. The addition of Be to β-NiAl suppressed the formation of transient alumina, and resulted in the formation of a protective BeAl₂O₄ spinel phase. In dry air, the addition of Be to the Ti-AI-Cr alloys also resulted in the formation of a protective BeAl₂O₄ spinel phase. In moist air, only Ti-AlCr- Be alloys with a high Cr content …

Remedial Action Plan For A Petroleum Hydrocarbon Release, Marty E. Murrietta

UNLV Theses, Dissertations, Professional Papers, and Capstones

This Remediation Action Plan (RAP) presents the methods and results of feasibility testing, the screening and selection of remedial options, preliminary conceptual design, methods, permitting requirements, recommendations and cleanup goals for on- and off-site remediation of petroleum hydrocarbon impacted soil and groundwater at an undisclosed site in Laughlin, Nevada. This site is an active convenience store and former retail fueling station. Plans are being made for the demolition of the fueling station and construction of a Factory Outlet Mall on the former refueling station site and surrounding properties to the south, west, and northwest. Remediation activities cannot significantly interfere with …

Acuta Enews May 1998, Vol.27, No. 5

ACUTA Newsletters

In This Issue

Board Approves Slate of Nominees

Moderators &Monitors Needed in San Diego!

Board Report

Let there be (Blue) Light!

Contractors on Your Campus?

DC at a Glance

Book Your Room for San Diego NOW!

Positions Available

Welcome New Member

On Farm Irrigation - The Shift From Art To Science, Charles M. Burt

BioResource and Agricultural Engineering

Excellent on-farm irrigation management and design have traditionally been promoted for reasons of improved yields and farm input costs. More recently, external pressures require even more detail to on-farm irrigation. These external pressures include competition for water by urban and environmental interests, plus degradation of aquifers and rivers. As irrigation progresses from an art to a science, new concepts must be adopted. Key points made in the paper relate to flexible water deliveries to farms, improved fertigation practices, the importance of on-farm irrigation evaluations, the use of an Irrigation Consumer Bill of Rights by dealers and farmers, and irrigation system …

Standards And Verification Protocols For Commissioning Air Flows In Buildings, Florida Solar Energy Center, James Cummings

FSEC Energy Research Center®

Commissioning involves three major elements - 1) process, 2) standards, and 3) protocols to verify compliance with the standards. Process is the step-by-step oversight of and involvement in the design, build, and start-up of the facility, to make sure that the design matches the customer's needs, that the design is consistent with good building science practice, that construction matches the construction documents, and that systems and system interactions are properly tested at start-up. This paper does not address process, rather it focuses on the second and third elements -- standards and compliance protocols. It presents standards related to airtightness, air …

Acuta Enews April 1998, Vol.27, No. 4

ACUTA Newsletters

In This Issue

Achievement Award Nominations

Cornell to Host Local Event June 8 and 9

Board Report

Using Digital Imagery to Enhance Design Efforts

From ACUTA Headquarters

DC at a Glance

Local Event

Positions Availalbe

Welcome New Members

Santa Clara Magazine, Volume 40 Number 1,Spring 1998, Santa Clara University

Santa Clara Magazine

12 - ROMANCING THE WATER Sam Scott '96. Rigorous training and mandatory practice test the athletes' - and coach's - mettle as a father passes the oar to his son, continuing a proud SCU tradition.

18 - A FAMILY MATTER By Tegan M. McLane. An innovative program in the business school opens the door to frank, incisive communication among family members whose kinship extends to the business world.

22 - POSTCARDS FROM GUATEMALA By Tegan M. McLane. For the third year, a group of faculty and staff journey to the outback of Guatemala. As observers and recorders, they learn much …

A Report On County Road Program Finance, Patsy Anderson, Kris Koehler

Kentucky Transportation Center Research Report

This report reflects the findings of a study of county road finance in Kentucky. Statistics contained in the report were derived from financial statements submitted by the counties to the Kentucky Department of Local Government.

Building Lms Adaptive Filters With Register-Based Fpgas, Li Ding

Electrical & Computer Engineering Theses & Dissertations

In this thesis, an 8-bit least mean squares (LMS) adaptive digital filter with 16 coefficients is implemented on a single FPGA, using the MaxPlus+2 design environment. The system is constructed as a hierarchical structure, using four different levels of design hierarchy. Subdesigns at each level of the hierarchy project are complied, fitted and simulated to test and verify their functional correctness. The complete system is tested and verified by checking the MaxPlus+2 simulator results against fixed-point integer arithmetic simulations written in Matlab. The resulting adaptive filter is subsequently mapped to the Alters FLEX I OK20TC144-3 device, resulting in a 14,500 …

Bs News

Building Services Engineering

No abstract provided.

Thin-Layer Prestressed Composite Ferroelectric Driver And Sensor Characterization With Application To Separation Flow Control, Karla M. Mossi

Mechanical & Aerospace Engineering Theses & Dissertations

Experiments were conducted in two different stages--general piezoelectric actuator characterization and flow separation control applications. The characterization of the piezoelectric devices was performed in several stages, due to the many variables that affect performance. The first stage of the characterization consisted of tests conducted on 13 different THUNDER^TM (thin-layer composite unimorph ferroelectric driver and sensor) configurations. These configurations consisted of a combination of 1, 3, 5, 7, and 9 layers of 25μ thick aluminum as backing material, with and without a top layer of 25μ aluminum. All of these configurations used the same piezoelectric ceramic wafer (PZT-5A) with dimensions …

Tooth Contact Sensing Apparatus And Method, John D. Summer, Edmund Pierzchala, Marek Perkowski

Electrical and Computer Engineering Faculty Publications and Presentations

An apparatus and method for sensing tooth contact includes at least one, and more typically plural, vibration sensors which are coupled to the non-biting surfaces of teeth. These sensors produce output signals when the associated teeth contact one another during jaw closing, the output signals being processed to provide information concerning tooth contact. For example, information concerning the ?rst tooth which contacts may be determined, the sequence of contact by various teeth may be determined, as well as the time between contact of the various teeth. Other information concerning tooth contact may also be determined and dis played in a …

Past Proceedings: Fourth International Conference On Case Histories In Geotechnical Engineering, St. Louis (1998), Multiple Authors

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

No abstract provided.

Past Proceedings: Second International Conference On Case Histories In Geotechnical Engineering (1988), Multiple Authors

International Conference on Case Histories in Geotechnical Engineering

No abstract provided.

Ground Vibrations Isolation By Pc Wall-Piles, Kiyoshi Hayakawa, Yukihiko Kani, Noriyuki Matsubara, Tamotsu Matsui, Richard Woods

International Conference on Case Histories in Geotechnical Engineering

This paper presents the results of a series of experiments conducted on a PC wall-piles barrier. That barrier was built alongside a road passing through some sensitive sites, to assess its effectiveness in isolating vibration caused by running trains and dropping a weight. Then the effectiveness of PC wall-piles for controlling ground vibrations is discussed. Field measurements were performed for 5 cases having different types of PC wall-piles. The simultaneous measurement of vibration was performed at several selected points on the ground. Finally, a method for estimation of vibration reduction by PC wall-piles was developed, being based on wave penetration …

The Environmental Remediation Of Clark Island − A Former Alliedsignal Inc. Site, Romeo Ciubotariu, Charles E. Schneeberger, Marie-Claude Wilson, William J. Hague

International Conference on Case Histories in Geotechnical Engineering

Clark Island is a 63 ha island located in Lake St-Francis, part of the St-Lawrence River, Québec, Canada. Since the early 40s the island has been used for the production of mineral acids by its fanner owner, Allied Chemicals Limited. Acidic wastes were placed over large portions of the island. The presence of these waste materials together with contaminated soils was identified as a potential threat to the nearby river water quality as well as to the underlying bedrock groundwater quality. A major remedial investigation and feasibility study was initiated in 1987. The approved scope of the remediation project included …

Regulatory, Environmental And Geotechnical Solutions To Construction Of A Roadway Embankment Over A Landfill, Victor A. Modeer, Mary C. Lamie

International Conference on Case Histories in Geotechnical Engineering

The new Illinois Route 143 alignment was constructed with the new Clark Bridge that crosses the Mississippi River in Alton, Illinois. The new bridge forced the Illinois Department of Transportation (IDOT) to cross the Alton Commons Landfill with a new alignment. Approximately 318 meters of embankment with fill heights ranging between 4.5 to 7.6 meters were constructed on top of the landfill. An Environmental Impairment Assessment, Preliminary Site Assessment (PSA), Phase II and Phase III investigations were completed in 1989 and 1990. Using "Brownfield" concepts, the Illinois Environmental Protection Agency (IEPA) approved the alignment construction without having to remediate the …

Case Histories Of Damaging Earthquakes, Walter W. Hays

International Conference on Case Histories in Geotechnical Engineering

This paper contains illustrative case histories of the principal "forensic lessons" learned from multidisciplinary postearthquake investigations [United States Geological Survey, 1993] of damaging earthquakes throughout the world. Since 1980, the most notable earthquakes include those that struck Kobe, Japan in 1995, Northridge, California in 1994, Hokkaido-Nansei-Oki, Japan and Khalari, India in 1993, Landers, California and Erzincan, Turkey in 1992, Costa Rica in 1991, the Philippines in 1990, Lorna Prieta, California in 1989, Spitak, Armenia in 1988, Mexico in 1985, and El Asnam, Algeria and Irpinia, Italy in 1980. Individually and collectively, these earthquakes have served as scientific laboratories to show …

Toward Earthquake Resilient Cities In The 21st Century: Reduction Of Community Vulnerability, Walter W. Hays

International Conference on Case Histories in Geotechnical Engineering

The focus of this paper is on earthquakes and earthquake-resilient communities in the United States. The paper describes what we have learned from the International Decade for Natural Disaster Reduction (IDNDR) and how we can build upon these experiences as we continue working toward the worldwide goal of natural-hazard-resilient cities in the 21st century.

Measurement And Analysis Of Civil Engineering Vibrations, Jean-Lou Chameau, Glenn J. Rix, Laurel Empie

International Conference on Case Histories in Geotechnical Engineering

Man-made vibrations caused by construction activities, blasting, rail and vehicular traffic, and machinery can have an adverse impact on buildings and facilities, human occupants of buildings, and sensitive equipment housed within these facilities. Comparisons between vibrations are often difficult because of different methods used to measure, analyze, and interpret vibration data. To facilitate these comparisons, standard methods of selecting and mounting transducers, processing vibration data, and interpreting test results are reviewed. Specific measurement and analysis techniques and maximum allowable vibration criteria used for evaluating the influence of vibrations on humans, the potential for cosmetic damage to structures, and the impact …

From The Past To The Future Of Landfill Engineering Through Case Histories, R. Kerry Rowe

International Conference on Case Histories in Geotechnical Engineering

The advances in landfill engineering are outlined based on a number of case histories illustrating past problems, hydraulic performance of clay liners, diffusive transport through liners, hydraulic containment and clogging of leachate collection systems. The importance of conventional geotechnical considerations (e.g. stability) will also be highlighted with reference to a number of cases. Finally, the recent advances in landfill operations are illustrated with respect to a modern landfill. It is concluded that, provided all key failure mechanisms are considered in the design, construction and operation of the facility, modern landfills should provide environmental protection both today and well into the …

Alcanena Industrial Waste Landfill − Description Of A Portuguese Case History, L. M. Pissara, N. Guedes, J. Garrido, M. L. Lopes, C. C. Freitas

International Conference on Case Histories in Geotechnical Engineering

Alcanena is a municipality located in the center of Portugal where about 85% of the Portuguese tanning industries are located, representing 65% of the national production. During decades the industrial waste was disposed directly in the soil and the waste waters discharged into the river without any treatment. Following the recent Portuguese environmental policy, the national authorities decided to rehabilitate this area. First, by the construction of a waste water treatment plant (WWTP) and a impermeabilized lagoon for WWTP mud deposition, then by the construction of a landfill for deposition of the tanning scraps and, finally, when the maximum capacity …

Flight Physician - March, 1998, Civil Aviation Medical Association

Browse all Civil Aviation Medical Association Newsletters

A sixteen page newsletter of the Civil Aviation Medical Association. The newsletter provided news about civil aviation medicine and information related to the organization.

The Rationale For Negligible Risk Exemptions In The Telecommunications Act Of 1996: Cellular Phone And Personal Communication System Transmitters, Gregg H. Claycamp

RISK: Health, Safety & Environment (1990-2002)

Dr. Claycamp explains the adequacy of current legislation and regulation.

Bs News

Building Services Engineering

No abstract provided.

Cryptococcus Neoformans Chemotyping By Quantitative Analysis Of H-1 Nuclear Magnetic Resonance Spectra Of Glucuronoxylomannans With A Computer-Simulated Artificial Neural Network, Robert Cherniak, Homayoun Valafar, Laura C. Morris, Faramarz Valafar

Faculty Publications

The complete assignment of the proton chemical shifts obtained by nuclear magnetic resonance (NMR) spectroscopy of de-O-acetylated glucuronoxylomannans (GXMs) from Cryptococcus neoformanspermitted the high-resolution determination of the total structure of any GXM. Six structural motifs based on an α-(1→3)-mannotriose substituted with variable quantities of 2-O-β- and 4-O-β-xylopyranosyl and 2-O-β-glucopyranosyluronic acid were identified. The chemical shifts of only the anomeric protons of the mannosyl residues served as structure reporter groups (SRG) for the identification and quantitation of the six triads present in any GXM. The assigned protons for the mannosyl residues resonated at clearly …

Acuta Enews February 1998, Vol.27, No. 2

ACUTA Newsletters

In This Issue

Call for Nominations

ACUTA Board of Directors 1998-1999

Board Report

ACUTA 1998 EVENTS

International Project Aims to Determine What IT Services Really Cost

DC at a Glance

Positions Available

Welcome New Members

Bs News

Building Services Engineering

No abstract provided.