Potential energy sputtering of EUVL materials (open access)

Potential energy sputtering of EUVL materials

Of the many candidates employed for understanding the erosion of critical Extreme Ultraviolet Lithography (EUVL) components, potential energy damage remains relatively uninvestigated. Unlike the familiar kinetic energy sputtering, which is a consequence of the momentum transferred by an ion to atoms in the target, potential energy sputtering occurs when an ion rapidly collects charge from the target as it neutralizes. Since the neutralization energy of a singly charged ion is typically on the order of 10 eV, potential energy effects are generally neglected for low charge state ions, and hence the bulk of the sputtering literature. As an ion's charge state is increased, the potential energy (PE) increases rapidly, e.g. PE(Xe{sup 1+})= 11 eV, PE(Xe{sup 10+}) = 810 eV, PE(Xe{sup 20+}) = 4.6 keV, etc. By comparison, the binding energy of a single atom on a surface is typically about 5 eV, so even relatively inefficient energy transfer mechanisms can lead to large quantities of material being removed, e.g. 25% efficiency for Xe{sup 10+} corresponds to {approx} 40 atoms/ion. By comparison, singly charged xenon ions with {approx} 20 keV of kinetic energy sputter only about 5 atoms/ion at normal incidence, and less than 1 atom/ion at typical EUV source energies. …
Date: July 2, 2004
Creator: Pomeroy, J. M.; Ratliff, L. P.; Gillaspy, J. D. & Bajt, S.
System: The UNT Digital Library
Pacific Gas and Electric Company preliminary staff review, Geysers Unit 16 (open access)

Pacific Gas and Electric Company preliminary staff review, Geysers Unit 16

The existing documentation on the Geysers Unit 16 and Geysers to Lakeville transmission line projects is reviewed and data deficiencies and areas requiring clarification for filing a Notice of Intention on these projects are identified. (MHR)
Date: May 2, 1978
Creator: unknown
System: The UNT Digital Library
Empowering Minority Communities with Health Information - UDC (open access)

Empowering Minority Communities with Health Information - UDC

Training update with Environmental a health focus. Training conducted as part of the United Negro College Fund Special Programs Corporation/National Library of Medicine - HBCU ACCESS Project at the University of the District of Columbia, Washington, DC on November 2, 2010.
Date: November 2, 2010
Creator: McMurray, L.; Foster, R. & Womble, and R.
System: The UNT Digital Library
National Library of Medicine Web Resources for Student Health Professionals (open access)

National Library of Medicine Web Resources for Student Health Professionals

Familiarize students affiliated with the Student National Medical Association with the National Library of Medicine's online resources that address medical conditions, health disparities, and public health preparedness needs.
Date: April 2, 2010
Creator: Womble, R.
System: The UNT Digital Library
Detection of hexavalent uranium with inline and field-portable immunosensors (open access)

Detection of hexavalent uranium with inline and field-portable immunosensors

An antibody that recognizes a chelated form of hexavalent uranium was used in the development of two different immunosensors for uranium detection. Specifically, these sensors were utilized for the analysis of groundwater samples collected during a 2007 field study of in situ bioremediation in a aquifer located at Rifle, CO. The antibody-based sensors provided data comparable to that obtained using Kinetic Phosphorescence Analysis (KPA). Thus, these novel instruments and associated reagents should provide field researchers and resource managers with valuable new tools for on-site data acquisition.
Date: October 2, 2008
Creator: Melton, Scott J.; Yu, Haini; Ali, Mehnaaz F.; Williams, Kenneth H; Wilkins, Michael J.; Long, Philip E. et al.
System: The UNT Digital Library
TABLE OF THE ISOTOPES (open access)

TABLE OF THE ISOTOPES

None
Date: January 2, 2003
Creator: Holden, N. E.
System: The UNT Digital Library
Waste Management's LNG Truck Fleet (open access)

Waste Management's LNG Truck Fleet

The Alternative Motor Fuel Act of 1988 requires the U.S. Department of Energy to demonstrate and evaluate alternative fuels usage in the United States. DOE's National Renewable Energy Laboratory is conducting the Alternative Fuel Truck Evaluation Project to compare alternative fuel and diesel fuel trucks. Information for the comparison comes from data collected on the operational, maintenance, performance, and emissions characteristics of alternative fuel trucks being used in vehicle fleets and comparable diesel fuel trucks servings as controls within the same fleets. This report highlights the start-up experience and presents the lessons learned from a project that operated a fleet of liquefied natural gas (LNG) refuse haulers in Washington, Pennsylvania.
Date: September 2, 1999
Creator: Battelle
System: The UNT Digital Library
NLM Evidence-based Information At Your Fingertips - NMA (open access)

NLM Evidence-based Information At Your Fingertips - NMA

The National Library of Medicine: Evidenced-Based Information at Your Fingertips workshop is designed specifically for physicians attending the Community Medicine and Public Health Section portion of the National Medical Association 2010 Annual Convention and Scientific Assembly. This course seeks to address the digital divide issue by teaching participants to use the NLM resources and to improve their ability to use health information echnology to treat their patients and develop strategies to eliminate race-based disparities in health.
Date: August 2, 2010
Creator: McMurray, L.
System: The UNT Digital Library
Bioananalytics of Human Microdosing (open access)

Bioananalytics of Human Microdosing

None
Date: May 2, 2011
Creator: Buchholz, B. A.; Sarachine Falso, M. J.; Stewart, B. J.; Haack, K. W.; Ognibene, T. J.; Salazar Quintero, G. A. et al.
System: The UNT Digital Library
METALLIC AND HYBRID NANOSTRUCTURES: FUNDAMENTALS AND APPLICATIONS (open access)

METALLIC AND HYBRID NANOSTRUCTURES: FUNDAMENTALS AND APPLICATIONS

This book chapter presents an overview of research conducted in our laboratory on preparation, optical and physico-chemical properties of metallic and nanohybrid materials. Metallic nanoparticles, particularly gold, silver, platinum or a combination of those are the main focus of this review manuscript. These metallic nanoparticles were further functionalized and used as templates for creation of complex and ordered nanomaterials with tailored and tunable structural, optical, catalytic and surface properties. Controlling the surface chemistry on/off metallic nanoparticles allows production of advanced nanoarchitectures. This includes coupled or encapsulated core-shell geometries, nano-peapods, solid or hollow, monometallic/bimetallic, hybrid nanoparticles. Rational assemblies of these nanostructures into one-, two- and tridimensional nano-architectures is described and analyzed. Their sensing, environmental and energy related applications are reviewed.
Date: May 2, 2012
Creator: Murph, S.
System: The UNT Digital Library
A biopower triumph -- The gasification story (open access)

A biopower triumph -- The gasification story

Biomass is a proven option for electricity generation. A diverse range of biopower producers includes electric utilities, independent power producers, and the pulp and paper industry. To help expand opportunities for biomass power production, the U.S. Department of Energy established the Biopower Program and is sponsoring efforts to increase the productivity of dedicated energy crops. The Program aims to double biomass conversion efficiencies, thus reducing biomass power generation costs. These efforts will promote industrial and agricultural growth, improve the environment, create jobs, increase U.S. energy security, and provide new export markets.
Date: June 2, 2000
Creator: Shepherd, P.
System: The UNT Digital Library
Biomass co-firing: A renewable alternative for utilities (open access)

Biomass co-firing: A renewable alternative for utilities

Biomass is a proven option for electricity generation. A diverse range of biopower producers includes electric utilities, independent power producers, and the pulp and paper industry. To help expand opportunities for biomass power production, the U.S. Department of Energy established the Biopower Program and is sponsoring efforts to increase the productivity of dedicated energy crops. The Program aims to double biomass conversion efficiencies, thus reducing biomass power generation costs. These efforts will promote industrial and agricultural growth, improve the environment, create jobs, increase U.S. energy security, and provide new export markets.
Date: June 2, 2000
Creator: Shepherd, P.
System: The UNT Digital Library
Small modular biopower systems (open access)

Small modular biopower systems

Biomass is a proven option for electricity generation. A diverse range of biopower producers includes electric utilities, independent power producers, and the pulp and paper industry. To help expand opportunities for biomass power production, the U.S. Department of Energy established the Biopower Program and is sponsoring efforts to increase the productivity of dedicated energy crops. The Program aims to double biomass conversion efficiencies, thus reducing biomass power generation costs. These efforts will promote industrial and agricultural growth, improve the environment, create jobs, increase U.S. energy security, and provide new export markets.
Date: June 2, 2000
Creator: Shepherd, P.
System: The UNT Digital Library
Clean Cities Goes International (Clean cities alternative fuel information series fact sheet) (open access)

Clean Cities Goes International (Clean cities alternative fuel information series fact sheet)

This fact sheet summarizes the activities of the Clean Cities International Program.
Date: May 2, 2000
Creator: Howard, R.
System: The UNT Digital Library
Project update: The Vermont gasifier (open access)

Project update: The Vermont gasifier

Biomass is a proven option for electricity generation. A diverse range of biopower producers includes electric utilities, independent power producers, and the pulp and paper industry. To help expand opportunities for biomass power production, the U.S. Department of Energy established the Biopower Program and is sponsoring efforts to increase the productivity of dedicated energy crops. The Program aims to double biomass conversion efficiencies, thus reducing biomass power generation costs. These efforts will promote industrial and agricultural growth, improve the environment, create jobs, increase U.S. energy security, and provide new export markets.
Date: June 2, 2000
Creator: Shepherd, P.
System: The UNT Digital Library
Developing bioenergy fuels: Biopower fact sheet (open access)

Developing bioenergy fuels: Biopower fact sheet

Successful development of biomass crops requires unique cooperation between researchers and members of the energy, agriculture, forestry, and environmental communities. DOE's Bioenergy Feedstock Development Program provides a mechanism to integrate the efforts of this diverse group. The federal government must continue to share risks (costs of growing, harvesting, storing, and supplying energy crops) for early adopters of energy crop technology and biomass energy producers.
Date: June 2, 2000
Creator: Shepherd, P.
System: The UNT Digital Library
Biopower Program, activities overview (open access)

Biopower Program, activities overview

Biomass is a proven option for electricity generation. A diverse range of biopower producers includes electric utilities, independent power producers, and the pulp and paper industry. To help expand opportunities for biomass power production, the U.S. Department of Energy established the Biopower Program and is sponsoring efforts to increase the productivity of dedicated energy crops. The Program aims to double biomass conversion efficiencies, thus reducing biomass power generation costs. These efforts will promote industrial and agricultural growth, improve the environment, create jobs, increase U.S. energy security, and provide new export markets.
Date: June 2, 2000
Creator: Shepherd, P.
System: The UNT Digital Library
Photovoltaic Energy Program Overview, Fiscal Year 2000 (open access)

Photovoltaic Energy Program Overview, Fiscal Year 2000

This ''annual report'' details the FY 2000 achievements of the U.S. Department of Energy PV Program in the categories of Research and Development, Technology Development, and Systems Engineering and Applications. Highlights include development of a record-breaking concentrator solar cell that is 32.4% efficient; fabrication of a record CIGS (copper indium gallium diselenide) cell at 18.8% efficiency; sharing an R and D 100 award with Siemens Solar Industries and the California Energy Commission for development and deployment of commercial CIS thin-film modules; and support for the efforts of the PV Industry Roadmap Workshop.
Date: March 2, 2001
Creator: Weis-Taylor, P.
System: The UNT Digital Library
Ralphs Grocery EC-Diesel Truck Fleet Start-up Experience (open access)

Ralphs Grocery EC-Diesel Truck Fleet Start-up Experience

NREL is conducting the DOE Truck Evaluation Project which includes testing new lower sulfur diesel fuels and exhaust filter technologies. Start-up experiences from one of the evaluations are hi-lighted in this report.
Date: October 2, 2001
Creator: Vertin, K. & Tuttle, J. H.
System: The UNT Digital Library
Plant Profiles: Industrial Energy Management in Action (open access)

Plant Profiles: Industrial Energy Management in Action

This 20-page brochure profiles industrial manufacturing firms who are achieving significant energy savings in their plants. The DOE Office of Industrial Technologies six plant-of-the-year nominees are featured, and an additional 10 projects from other companies are also highlighted. Information on OIT's awards and recognition process, and information on OIT and BestPractices is also included.
Date: February 2, 2001
Creator: Technologies, DOE Office of Industrial
System: The UNT Digital Library
Wind Powering the Government (open access)

Wind Powering the Government

There are more than half a million Federal buildings with electric bills totaling about $3.5 billion per year. The Wind Powering America Initiative challenges the Federal government to reduce its use of energy produced by fossil fuels by obtaining at least 5% of its electricity from wind by 2010. As part of the current efforts to achieve the initiative's goal, NREL's Technical Information Services published Wind Powering the Government, a brochure that encourages the use of wind energy on Federal properties and the purchase of green power or green tags by Federal property managers.
Date: August 2, 2000
Creator: Pitchford, P.
System: The UNT Digital Library
The BigHorn Home Improvement Center; Silverthorne, Colorado (open access)

The BigHorn Home Improvement Center; Silverthorne, Colorado

The BigHorn Home Improvement Center in Silverthorne, Colorado, was designed using a whole-building approach, looking at the way that the building's site, windows, walls, floors, electrical, and mechanical systems could work together most efficiently. The center includes a hardware store and building materials warehouse space, and features a 9.0 kw photovoltaic system to provide an average of 25% of the building's electricity. The BigHorn Center is one of the nation's first commercial buildings to integrate daylighting and natural ventilation cooling systems into a retail space. It is expected to reduce energy costs by 62% compared to conventionally designed retail buildings.
Date: January 2, 2001
Creator: Epstein, K. & Torcellini, P.
System: The UNT Digital Library
STRATEGIES FOR QUANTIFYING PET IMAGING DATA FROM TRACER STUDIES OF BRAIN RECEPTORS AND ENZYMES. (open access)

STRATEGIES FOR QUANTIFYING PET IMAGING DATA FROM TRACER STUDIES OF BRAIN RECEPTORS AND ENZYMES.

A description of some of the methods used in neuroreceptor imaging to distinguish changes in receptor availability has been presented in this chapter. It is necessary to look beyond regional uptake of the tracer since uptake generally is affected by factors other than the number of receptors for which the tracer has affinity. An exception is the infusion method producing an equilibrium state. The techniques vary in complexity some requiring arterial blood measurements of unmetabolized tracer and multiple time uptake data. Others require only a few plasma and uptake measurements and those based on a reference region require no plasma measurements. We have outlined some of the limitations of the different methods. Laruelle (1999) has pointed out that test/retest studies to which various methods can be applied are crucial in determining the optimal method for a particular study. The choice of method will also depend upon the application. In a clinical setting, methods not involving arterial blood sampling are generally preferred. In the future techniques for externally measuring arterial plasma radioactivity with only a few blood samples for metabolite correction will extend the modeling options of clinical PET. Also since parametric images can provide information beyond that of ROI analysis, …
Date: April 2, 2001
Creator: Logan, J.
System: The UNT Digital Library
Production and application of synthetic precursors labeled with carbon-11 and fluorine-18 (open access)

Production and application of synthetic precursors labeled with carbon-11 and fluorine-18

It is evident from this chapter that there is enormous flexibility both in the selection of the nature of the radioisotope and ways to generate it, as well as in the selection of the labeling precursor to appropriately attach that radioisotope to some larger biomolecule of interest. The arsenal of radiolabeling precursors now available to the chemist is quite extensive, and without a doubt will continue to grow as chemists develop new ones. However, the upcoming years will perhaps reflect a greater effort in refining existing methods for preparing some of those precursors that are already available to us. For example, the use of solid-phase reactions to accomplish in a single step what would normally take several using conventional solvent-based reactions has already been shown to work in many occasions. The obvious advantage here is that processes become more amenable to system automation thus affording greater reliability in day-to-day operations. There are perhaps other technologies in science that have yet to be realized by the chemist in the PET laboratory that could provide a similar or even a greater benefit. One only needs to be open to new ideas, and imaginative enough to apply them to the problems at hand.
Date: April 2, 2001
Creator: Ferrieri, R. A.
System: The UNT Digital Library