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160 C PROTON EXCHANGE MEMBRANE (PEM) FUEL CELL SYSTEM DEVELOPMENT (open access)

160 C PROTON EXCHANGE MEMBRANE (PEM) FUEL CELL SYSTEM DEVELOPMENT

The objectives of this program were: (a) to develop and demonstrate a new polymer electrolyte membrane fuel cell (PEMFC) system that operates up to 160 C temperatures and at ambient pressures for stationary power applications, and (b) to determine if the GTI-molded composite graphite bipolar separator plate could provide long term operational stability at 160 C or higher. There are many reasons that fuel cell research has been receiving much attention. Fuel cells represent environmentally friendly and efficient sources of electrical power generation that could use a variety of fuel sources. The Gas Technology Institute (GTI), formerly Institute of Gas Technology (IGT), is focused on distributed energy stationary power generation systems. Currently the preferred method for hydrogen production for stationary power systems is conversion of natural gas, which has a vast distribution system in place. However, in the conversion of natural gas into a hydrogen-rich fuel, traces of carbon monoxide are produced. Carbon monoxide present in the fuel gas will in time cumulatively poison, or passivate the active platinum catalysts used in the anodes of PEMFC's operating at temperatures of 60 to 80 C. Various fuel processors have incorporated systems to reduce the carbon monoxide to levels below 10 ppm, …
Date: December 21, 2001
Creator: Marianowski, L. G.
Object Type: Report
System: The UNT Digital Library
Actinide-Aluminate Speciation in Alkaline Radioactive Waste (open access)

Actinide-Aluminate Speciation in Alkaline Radioactive Waste

Investigation of behavior of actinides in alkaline media containing AL(III) showed that no aluminate complexes of actinides in oxidation states (IIII-VIII) were formed in alkaline solutions. At alkaline precipitation IPH (10-14) of actinides in presence of AL(III) formation of aluminate compounds is not observed. However, in precipitates contained actinides (IIV)<(VI), and to a lesser degree actinides (III), some interference of components takes place that is reflected in change of solid phase properties in comparison with pure components or their mechanical mixture. The interference decreases with rise of precipitation PH and at PH 14 is exhibited very feebly. In the case of NP(VII) the individual compound with AL(III) is obtained, however it is not aluminate of neptunium(VII), but neptunate of aluminium(III) similar to neptunates of other metals obtained earlier.
Date: December 21, 2001
Creator: Clark, Dr. David L. & Fedosseev, Dr. Alexander M.
Object Type: Report
System: The UNT Digital Library
Adapting MARSSIM for FUSRAP site closure. (open access)

Adapting MARSSIM for FUSRAP site closure.

The Multi-Agency Radiation Survey and Site Investigation Manual (MARSSIM) provides a coherent, technically defensible process for establishing that exposed surfaces satisfy site cleanup requirements. Unfortunately, many sites have complications that challenge a direct application of MARSSIM. Example complications include Record of Decision (ROD) requirements that are not MARSSIM-friendly, the potential for subsurface contamination, and incomplete characterization information. These types of complications are typically the rule, rather than the exception, for sites undergoing radiologically-driven remediation and closure. One such site is the Formerly Utilized Sites Remedial Action Program (FUSRAP) Linde site in Tonawanda, New York. Cleanup of the site is currently underway. The Linde site presented a number of challenges to designing and implementing a closure strategy consistent with MARSSIM. This paper discusses some of the closure issues confronted by the U.S. Army Corps of Engineers Buffalo District at the Linde site, and describes how MARSSIM protocols were adapted to address these issues.
Date: December 21, 2001
Creator: Johnson, R.; Durham, L.; Rieman, C. & Hoover, R.
Object Type: Article
System: The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 103, No. 252, Ed. 1 Friday, December 21, 2001 (open access)

Altus Times (Altus, Okla.), Vol. 103, No. 252, Ed. 1 Friday, December 21, 2001

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: December 21, 2001
Creator: Bush, Michael
Object Type: Newspaper
System: The Gateway to Oklahoma History
Andean Regional Initiative (ARI): FY2002 Assistance for Colombia and Neighbors (open access)

Andean Regional Initiative (ARI): FY2002 Assistance for Colombia and Neighbors

This report discusses the Andean Regional Initiative (ARI), implemented by the Bush Administration in 2001 to provide economic and counter-narcotics assistance for Colombia and regional neighbors. The report discusses the goals of the ARI, as well as related appropriations.
Date: December 21, 2001
Creator: Storrs, K. Larry & Serafino, Nina M.
Object Type: Report
System: The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 80, No. 25, Ed. 1 Friday, December 21, 2001 (open access)

The Baytown Sun (Baytown, Tex.), Vol. 80, No. 25, Ed. 1 Friday, December 21, 2001

Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date: December 21, 2001
Creator: Cash, Wanda Garner
Object Type: Newspaper
System: The Portal to Texas History
Bioterrorism: Summary of a CRS/National Health Policy Forum Seminar on Federal, State, and Local Public Health Preparedness (open access)

Bioterrorism: Summary of a CRS/National Health Policy Forum Seminar on Federal, State, and Local Public Health Preparedness

The September 11th attack and subsequent intentional release of anthrax spores via the U.S. postal system have focused policymakers’ attention on the preparedness and response capability of the nation’s public health system. The anthrax attacks put a tremendous strain on the U. S. public health infrastructure, an infrastructure that many experts argue has been weakened by years of neglect and under-funding. To better understand the preparedness gaps that exist, as well as the disparate functions and agencies that define public health in this country, the Congressional Research Service (CRS), in conjunction with George Washington University’s National Health Policy Forum (NHPF), convened a seminar on October 26, 2001, entitled, The U.S. Health Care System: Are State and Local Officials Prepared for Bioterrorism? How Should the Federal Government Assist?
Date: December 21, 2001
Creator: Strongin, Robin J. & Redhead, C. Stephen
Object Type: Report
System: The UNT Digital Library
The Boerne Star (Boerne, Tex.), Vol. 96, No. 102, Ed. 1 Friday, December 21, 2001 (open access)

The Boerne Star (Boerne, Tex.), Vol. 96, No. 102, Ed. 1 Friday, December 21, 2001

Semiweekly newspaper from Boerne, Texas that includes local, state, and national news along with advertising.
Date: December 21, 2001
Creator: Keasling, Edna & Mahoney, Kent
Object Type: Newspaper
System: The Portal to Texas History
Brady Standard-Herald and Heart O' Texas News (Brady, Tex.), Ed. 1 Friday, December 21, 2001 (open access)

Brady Standard-Herald and Heart O' Texas News (Brady, Tex.), Ed. 1 Friday, December 21, 2001

Semiweekly newspaper from Brady, Texas that includes local, state, and national news along with advertising.
Date: December 21, 2001
Creator: Stewart, James E.
Object Type: Newspaper
System: The Portal to Texas History
The Clifton Record (Clifton, Tex.), Vol. 106, No. 102, Ed. 1 Friday, December 21, 2001 (open access)

The Clifton Record (Clifton, Tex.), Vol. 106, No. 102, Ed. 1 Friday, December 21, 2001

Semi-weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date: December 21, 2001
Creator: Smith, W. Leon
Object Type: Newspaper
System: The Portal to Texas History
Coarse-Grained Molecular Dynamics and Multiscale Modeling of NEMS Resonators (open access)

Coarse-Grained Molecular Dynamics and Multiscale Modeling of NEMS Resonators

We review concurrent multiscale simulations of dynamic and temperature-dependent processes found in nanomechanical systems coupled to larger scale surroundings. We focus on the behavior of sub-micron Micro-Electro-Mechanical Systems (MEMS), especially microresonators. These systems are often called NEMS, for Nano-Electro-Mechanical Systems. The coupling of length scales methodology we have developed for MEMS employs an atomistic description of small but key regions of the system, consisting of millions of atoms, coupled concurrently to a finite element model of the periphery. The model, Coarse-Grained Molecular Dynamics (CGMD), builds a generalized finite element formalism from the underlying atomistic physics in order to ensure a smooth coupling between regions governed by different length scales. The result is a model that accurately describes the behavior of the mechanical components of MEMS down to the atomic scale.
Date: December 21, 2001
Creator: Rudd, R E
Object Type: Article
System: The UNT Digital Library
Coarse-Grained Molecular Dynamics: Dissipation Due to Internal Modes (open access)

Coarse-Grained Molecular Dynamics: Dissipation Due to Internal Modes

We describe progress on the issue of pathological elastic wave reflection in atomistic and multiscale simulation. First we briefly review Coarse-Grained Molecular Dynamics (CGMD). Originally CGMD was formulated as a Hamiltonian system in which energy is conserved. This formulation is useful for many applications, but recently CGMD has been extended to include generalized Langevin forces. Here we describe how Langevin dynamics arise naturally in CGMD, and we examine the implication for elastic wave scattering.
Date: December 21, 2001
Creator: Rudd, R E
Object Type: Article
System: The UNT Digital Library
Compact Fluorescent Plug-In Ballast-in-a-Socket (open access)

Compact Fluorescent Plug-In Ballast-in-a-Socket

The primary goal of this program was to develop a ballast system for plug-in CFLs (compact fluorescent lamps) that will directly replace standard metal shell, medium base incandescent lampholders (such as Levition No. 6098) for use with portable lamp fixtures, such as floor, table and desk lamps. A secondary goal was to identify a plug-in CFL that is optimized for use with this ballast. This Plug-in CFL Ballastin-a-Socket system will allow fixture manufacturers to easily manufacture CFL-based high-efficacy portable fixtures that provide residential and commercial consumers with attractive, cost-effective, and energy-efficient fixtures for use wherever portable incandescent fixtures are used today. The advantages of this proposed system over existing CFL solutions are that the fixtures can only be used with high-efficacy CFLs, and they will be more attractive and will have lower life-cycle costs than screw-in or adapter-based CFL retrofit solutions. These features should greatly increase the penetration of CFL's into the North American market. Our work has shown that using integrated circuits it is quite feasible to produce a lamp-fixture ballast of a size comparable to the current Edison-screw 3-way incandescent fixtures. As for price points for BIAS-based fixtures, end-users polled by the Lighting Research Institute at RPI indicated …
Date: December 21, 2001
Creator: Voelker, Rebecca
Object Type: Report
System: The UNT Digital Library
CONTOMS (Counter Narcotics and Terrorism Operational Medical Support Program) (open access)

CONTOMS (Counter Narcotics and Terrorism Operational Medical Support Program)

Since the September 11th terrorist attack, greater attention has focused on federal, state, and local readiness to respond to situations involving terrorism or weapons of mass destruction (WMD). One such federal program that provided federal support to local law enforcement and first responders is CONTOMS (Counter Narcotics and Terrorism Operational Medical Support).
Date: December 21, 2001
Creator: Gerleman, David J. & Hildreth, Steven A.
Object Type: Report
System: The UNT Digital Library
Correlation of Chemisorption and Electronic Effects for Metal Oxide Interfaces: Transducing Principles for Temperature Programmed Gas Microsensors (Final Report) (open access)

Correlation of Chemisorption and Electronic Effects for Metal Oxide Interfaces: Transducing Principles for Temperature Programmed Gas Microsensors (Final Report)

This Final Report describes efforts and results for a 3-year DoE/OST-EMSP project centered at NIST. The multidisciplinary project investigated scientific and technical concepts critical for developing tunable, MEMS-based, gas and vapor microsensors that could be applied for monitoring the types of multiple analytes (and differing backgrounds) encountered at DoE waste sites. Micromachined ''microhotplate'' arrays were used as platforms for fabricating conductometric sensor prototypes, and as microscale research tools. Efficient microarray techniques were developed for locally depositing and then performance evaluating thin oxide films, in order to correlate gas sensing characteristics with properties including composition, microstructure, thickness and surface modification. This approach produced temperature-dependent databases on the sensitivities of sensing materials to varied analytes (in air) which enable application-specific tuning of microsensor arrays. Mechanistic studies on adsorb ate transient phenomena were conducted to better understand the ways in which rapid temperature programming schedules can be used to produce unique response signatures and increase information density in microsensor signals. Chemometric and neural network analyses were also employed in our studies for recognition and quantification of target analytes.
Date: December 21, 2001
Creator: Semancik, S.; Cavicchi, R. E.; DeVoe, D. L. & McAvoy, T. J.
Object Type: Report
System: The UNT Digital Library
Daily Journal (Perry, Okla.), Vol. 108, No. 250, Ed. 1 Friday, December 21, 2001 (open access)

Daily Journal (Perry, Okla.), Vol. 108, No. 250, Ed. 1 Friday, December 21, 2001

Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date: December 21, 2001
Creator: Brown, Gloria
Object Type: Newspaper
System: The Gateway to Oklahoma History
Dallas Voice (Dallas, Tex.), Vol. 18, No. 35, Ed. 1 Friday, December 21, 2001 (open access)

Dallas Voice (Dallas, Tex.), Vol. 18, No. 35, Ed. 1 Friday, December 21, 2001

Weekly newspaper from Dallas, Texas that includes local, state, and national news and advertising of interest to the Lesbian, Gay, Bisexual, and Transgender (LGBT) community.
Date: December 21, 2001
Creator: Vercher, Dennis
Object Type: Newspaper
System: The UNT Digital Library
Department of Energy: Fundamental Reassessment Needed to Address Major Mission, Structure, and Accountability Problems (open access)

Department of Energy: Fundamental Reassessment Needed to Address Major Mission, Structure, and Accountability Problems

A letter report issued by the General Accounting Office with an abstract that begins "The Department of Energy (DOE) manages the nation's nuclear weapons production complex, cleans up the environmental legacy from the production of nuclear weapons, and conducts research and development into both energy and basic science. DOE launched several reforms in the 1990s to realign its organizational structure, reduce its workforce, strengthen contracting procedures by competitive awards practices, streamline oversight of activities, and delegate some responsibilities to the private sector. Despite these reforms, GAO found that management weaknesses persist because DOE's reforms were piecemeal solutions whose effect has been muted by three impediments to fundamental improvement: the department's diverse missions, dysfunctional organizational structure, and weak control of accountability. Management weaknesses and performance problems will likely continue unless DOE addresses these impediments in a comprehensive fashion."
Date: December 21, 2001
Creator: United States. General Accounting Office.
Object Type: Report
System: The UNT Digital Library
Economic Development: Federal Assistance Programs for American Indians and Alaska Natives (open access)

Economic Development: Federal Assistance Programs for American Indians and Alaska Natives

A letter report issued by the General Accounting Office with an abstract that begins "Despite the recent success of casino gaming and other business ventures undertaken by some Native Americans and Alaska Natives, unemployment and poverty remain widespread in these communities. Many federal programs are available to help Native Americans with economic development, and some tribes are using these programs. Although agencies reported that their programs helped to create and retain jobs, little is known about the effectiveness of these programs. The preparation of performance plans and reports, the designation of agency points of contact, and the establishment of a single office to coordinate federal programs relating to Indian economic development could improve Native Americans' access to federal programs and provide federal decisionmakers with valuable performance information."
Date: December 21, 2001
Creator: United States. General Accounting Office.
Object Type: Report
System: The UNT Digital Library
Effects of composition and exposure on the solar reflectance of Portland cement concrete (open access)

Effects of composition and exposure on the solar reflectance of Portland cement concrete

Increasing the solar reflectance (albedo) of a paved surface keeps it cooler in the sun, reducing convection of heat from pavement to air and thereby decreasing the ambient air temperature. Simulations of the influence of pavement albedo on air temperature in Los Angeles predict that increasing the albedo of 1,250 km2 of pavement by 0.25 would save cooling energy worth $15M yr-1, and reduce smog-related medical and lost-work expenses by $76M yr-1. Most sidewalks and a small fraction of roads and parking areas are paved with portland cement concrete, which can be made quite reflective through suitable choice of cement and aggregate. Variations with composition and environmental exposure of the albedos of portland cement concrete pavements were investigated through laboratory fabrication and exposure of 32 mixes of concrete. Twenty-four mixes yielded substandard, ''rough'' concretes due to high, unmet aggregate water demand. The albedos of the remaining eight ''smooth'' concrete mixes ranged from 0.41 to 0.77 (mean 0.59). Simulated weathering, soiling, and abrasion each reduced average concrete albedo (mean decreases 0.06, 0.05, and 0.19, respectively), though some samples became slightly more reflective through weathering or soiling. Simulated rain (wetting) strongly depressed the albedos of concretes (mean decrease 0.23) until their surfaces …
Date: December 21, 2001
Creator: Levinson, Ronnen & Akbari, Hashem
Object Type: Report
System: The UNT Digital Library
Egypt-United States Relations (open access)

Egypt-United States Relations

Among the current issues in U.S.-Egyptian relations are the shared concerns over the terrorist attacks against Egyptian police, religious, government, and tourist facilities, and what those attacks maysignal for Egypt’s domestic stability. The two nations may disagree over Egypt’s interpretation of applying human rights practices to Islamic terrorists. The two countries disagree over the speed and depth, but not the need for some of Egypt’s economic reforms. Egypt and the United States agree on the importance of the Egyptian-Israeli peace treaty, the need to continue current Arab-Israel peace talks, and the need for regional stability. The two nations agree on Egypt’s determination to introduce democratic reforms to Egypt.
Date: December 21, 2001
Creator: Mark, Clyde R.
Object Type: Report
System: The UNT Digital Library
Enhancements to modeling regional climate response and global variability (open access)

Enhancements to modeling regional climate response and global variability

Efforts during this grant period focused on three main considerations: (a) developing and testing various climate scenarios with SEAM, a newly created model (b) model reconstruction efforts to speed up computations and (c) optimum realization statistics
Date: December 21, 2001
Creator: Baer, Ferdinand; Tribbia, Joseph J. & Taylor, Mark
Object Type: Report
System: The UNT Digital Library
The Express-Star (Chickasha, Okla.), Ed. 1 Friday, December 21, 2001 (open access)

The Express-Star (Chickasha, Okla.), Ed. 1 Friday, December 21, 2001

Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date: December 21, 2001
Creator: Bush, Kent
Object Type: Newspaper
System: The Gateway to Oklahoma History
Financial Audit: U.S. Senate Stationery Room Revolving Fund's Fiscal Year 2000 Financial Statement (open access)

Financial Audit: U.S. Senate Stationery Room Revolving Fund's Fiscal Year 2000 Financial Statement

A letter report issued by the General Accounting Office with an abstract that begins "GAO audited the financial statement for the Senate Stationary Room Revolving Fund for fiscal year 2000. GAO found that (1) the statement is presented fairly in all material respects; (2) although internal control should be improved, the Stationary Room had effective internal controls over financial reporting and compliance with laws and regulations; and (3) there was no reportable noncompliance with selected provisions of laws and regulations GAO tested."
Date: December 21, 2001
Creator: United States. General Accounting Office.
Object Type: Report
System: The UNT Digital Library