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108th Congress
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Small Wind Electric Systems Consumers' Guides
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Cost-Effective Reciprocating Engine Emissions Control and Monitoring for E&P Field and Gathering Engines Progress Report
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Fiscal Year 2004
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Fundamentals of Reservoir Surface Energy as Related to Surface Properties, Wettability, Capillary Action, and Oil Recovery From Fractured Reservoirs by Spontaneous Imbibition Quarterly Report
4
Gas/Liquid Membranes for Natural Gas Upgrading Quarterly Report
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National Bioenergy Center Sugar Platform Integration Project Quarterly Update
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Analysis of Devonian Black Shales in Kentucky for Potential Carbon Dioxide Sequestration and Enhanced Natural Gas Production Quarterly Report
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Preventive Maintenance Strategies for Compressed Air Systems;Industrial Technologies Program (ITP) Compressed Air Tip Sheet No.6
BestPractices Program tip sheet discussing preventive maintenance strategies for compressed air systems.
Date:
August 1, 2004
Creator:
unknown
Object Type:
Text
System:
The UNT Digital Library
Insights into the Dynamic Response of Tunnels in Jointed Rocks
Tunnels in jointed rocks can be subjected to severe dynamic loads because of rock bursts, coal bumps, and large earthquakes. A series of 3-dimensional simulations was performed, based on discrete element analysis to gain insights into the parameters that influence the response of such tunnels. The simulations looked at the effect of joint set orientation, the effect of joint spacing, the effect of pulse shape for a given displacement, and the influence of using rigid versus deformable blocks in the analyses. The results of this modeling were also compared to field evidence of dynamic tunnel failures. This comparison reinforced the notion that 3-dimensional discrete element analysis can capture very well the kinematics of structures in jointed rock under dynamic loading.
Date:
November 1, 2004
Creator:
Heuze, F E
Object Type:
Article
System:
The UNT Digital Library
Small Wind Electric Systems: An Idaho Consumer's Guide (Revised)
Small Wind Electric Systems: An Idaho Consumer's Guide provides consumers with information to help them determine whether a small wind electric system can provide all or a portion of the energy they need for their home or business based on their wind resource, energy needs, and their economics. Topics discussed in the guide include how to make a home more energy efficient, how to choose the correct turbine size, the parts of a wind electric system, how to determine whether enough wind resource exists, how to choose the best site for a turbine, how to connect a system to the utility grid, and whether it's possible to become independent of the utility grid using wind energy. In addition, the cover of the guide contains a regional wind resource map and a list of incentives and contacts for more information.
Date:
August 1, 2004
Creator:
unknown
Object Type:
Text
System:
The UNT Digital Library
Toward understanding environmental effects in SDSS clusters
We find clusters and superclusters of galaxies using the Data Release 1 of the Sloan Digital Sky Survey. We determine the luminosity function of clusters and find that clusters in a high-density environment have a luminosity a factor of {approx}5 higher than in a low-density environment. We also study clusters and superclusters in numerical simulations. Simulated clusters in a high-density environment are also more massive than those in a low-density environment. Comparison of the density distribution at various epochs in simulations shows that in large low-density regions (voids) dynamical evolution is very slow and stops at an early epoch. In contrast, in large regions of higher density (superclusters) dynamical evolution starts early and continues until the present; here particles cluster early, and by merging of smaller groups very rich systems of galaxies form.
Date:
November 1, 2004
Creator:
Einasto, Jaan; Tago, E.; Einasto, M.; Saar, E.; Suhhonenko, I.; Heinamaki, P. et al.
Object Type:
Article
System:
The UNT Digital Library
EVALUATING ENVIRONMENTAL DECISION SUPPORT TOOLS.
Effective contaminated land management requires a number of decisions addressing a suite of technical, economic, and social concerns. These concerns include human health risks, ecological risks, economic costs, technical feasibility of proposed remedial actions, and the value society places on clean-up and re-use of formerly contaminated lands. Decision making, in the face of uncertainty and multiple and often conflicting objectives, is a vital and challenging role in environmental management that affects a significant economic activity. Although each environmental remediation problem is unique and requires a site-specific analysis, many of the key decisions are similar in structure. This has led many to attempt to develop standard approaches. As part of the standardization process, attempts have been made to codify specialist expertise into decision support tools. This activity is intended to facilitate reproducible and transparent decision making. The process of codifying procedures has also been found to be a useful activity for establishing and rationalizing management processes. This study will have two primary objectives. The first is to develop taxonomy for Decision Support Tools (DST) to provide a framework for understanding the different tools and what they are designed to address in the context of environmental remediation problems. The taxonomy will have …
Date:
October 1, 2004
Creator:
SULLIVAN, T.
Object Type:
Report
System:
The UNT Digital Library
Analysis and Comparison of Test Results from the Small Wind Research Turbine Test Project: Preprint
Most small wind turbines furl (yaw or tilt out of the wind) as a means of limiting power and rotor speeds in high winds. The Small Wind Research Turbine (SWRT) testing project was initiated in 2003 with the goal of better characterizing both small wind turbine loads (including thrust) and dynamic behavior, specifically as they relate to furling. The main purpose of the testing was to produce high-quality data sets for model development and validation and to help the wind industry further their understanding of small wind turbine behavior. Testing was conducted on a modified Bergey Excel 10-kW wind turbine. A special shaft sensor was designed to measure shaft loads including thrust, torque, and shaft bending. Analysis of 10-minute mean data showed a strong correlation between furling and center of thrust location, as calculated from the shaft-bending and thrust measurements. Data were collected for three different turbine configurations that included a change in the lateral furling offset and the blades. An analysis of inflow conditions indicated that organized atmospheric turbulence had some impact on furling.
Date:
November 1, 2004
Creator:
Corbus, D. & Prascher, D.
Object Type:
Article
System:
The UNT Digital Library
Field Verification Project for Small Wind Turbines, Quarterly Report, October-December 2001, 4th Quarter, Issue No.7
This newsletter provides a brief overview of the Field Verification Project for Small Wind Turbines conducted at the NWTC, along with a description of activities and case studies of projects.
Date:
December 1, 2004
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Idle Reduction Technology Demonstrations: Status Report
DOE's Advanced Vehicle Testing Activity is sponsoring 3 idle reduction demonstration projects for heavy-duty trucks. This report provides the status of the projects.
Date:
November 1, 2004
Creator:
Proc, K.
Object Type:
Text
System:
The UNT Digital Library
Gridley Ethanol Demonstration Project Utilizing Gasification Technology: Feedstock Supply Plan; March 15, 2004
The report describes a Feedstock Supply Plan for the proposed Gridley Ethanol Demonstration Project to be located in the City of Gridley Industrial Park in Gridley, California. This report also includes information on the establishment of the required infrastructure required for collecting approximately 113,000 Bone Dry Tons (BDT) annually for the proposed facility. Using the Pearson Technology from Aberdeen, Mississippi, and the related engineering assumptions for required feedstock, it is estimated that the proposed Gridley Ethanol Project will use approximately 113,000 BDT of rice straw to produce approximately up to 20 million gallons of ethanol annually, and/or process steam and or electricity. Based on TSS's survey of planted rice acreage in the Sacramento Valley, a total of 379,765 acres of rice are grown within a 30-mile radius of the Gridley site and that 759,530 BDT of recoverable rice straw are generated annually. This volume of rice straw is 6.7 times the 113,000 BDT of tot al feedstock needed by the proposed Gridley facility. Sufficient infrastructure exists with additional market potential for further private market infrastructure expansion in California and the Northwest (Oregon, Washington and Idaho) to collect the annual feedstock requirement of 113,000 BDT for the proposed Gridley Ethanol Demonstration …
Date:
July 1, 2004
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Interconnection Testing of Distributed Resources: Preprint
With the publication of IEEE 1547-2003(TM) Standard for Interconnecting Distributed Resources With Electric Power Systems, the electric power industry has a need to develop tests and procedures to verify that interconnection equipment meets 1547 technical requirements. A new standard, IEEE P1547.1(TM), is being written to give detailed tests and procedures for confirming that equipment meets the interconnection requirements. The National Renewable Energy Laboratory has been validating test procedures being developed as part of IEEE P1547.1. As work progresses on the validation of those procedures, information and test reports are passed on to the working group of IEEE P1547.1 for future revisions.
Date:
February 1, 2004
Creator:
Kroposki, B.; Basso, T. & DeBlasio, R.
Object Type:
Article
System:
The UNT Digital Library
Diagnostic potential of cosmic-neutrino absorption spectroscopy
Annihilation of extremely energetic cosmic neutrinos on the relic-neutrino background can give rise to absorption lines at energies corresponding to formation of the electroweak gauge boson Z{sup 0}. The positions of the absorption dips are set by the masses of the relic neutrinos. Suitably intense sources of extremely energetic (10{sup 21} - 10{sup 25}-eV) cosmic neutrinos might therefore enable the determination of the absolute neutrino masses and the flavor composition of the mass eigenstates. Several factors--other than neutrino mass and composition--distort the absorption lines, however. We analyze the influence of the time-evolution of the relic-neutrino density and the consequences of neutrino decay. We consider the sensitivity of the lineshape to the age and character of extremely energetic neutrino sources, and to the thermal history of the Universe, reflected in the expansion rate. We take into account Fermi motion arising from the thermal distribution of the relic-neutrino gas. We also note the implications of Dirac vs. Majorana relics, and briefly consider unconventional neutrino histories. We ask what kinds of external information would enhance the potential of cosmic-neutrino absorption spectroscopy, and estimate the sensitivity required to make the technique a reality.
Date:
December 1, 2004
Creator:
Barenboim, Gabriela; U., /Valencia; Mena Requejo, Olga; Quigg, Chris & /Fermilab
Object Type:
Article
System:
The UNT Digital Library
The SAMGrid monitoring service and its integration with MonALISA
The SAMGrid team is in the process of implementing a monitoring and information service, which fulfills several important roles in the operation of the SAMGrid system, and will replace the first generation of monitoring tools in the current deployments. The first generation tools are in general based on text log-files and represent solutions which are not scalable or maintainable. The roles of the monitoring and information service are: (1) providing diagnostics for troubleshooting the operation of SAMGrid services; (2) providing support for monitoring at the level of user jobs; (3) providing runtime support for local configuration and other information which currently must be stored centrally (thus moving the system toward greater autonomy for the SAMGrid station services, which include cache management and job management services); (4) providing intelligent collection of statistics in order to enable performance monitoring and tuning. The architecture of this service is quite flexible, permitting input from any instrumented SAMGrid application or service. It will allow multiple backend storage for archiving of (possibly) filtered monitoring events, as well as real time information displays and active notification service for alarm conditions. This service will be able to export, in a configurable manner, information to higher level Grid monitoring …
Date:
December 1, 2004
Creator:
Lyon, A.; Vokac, P.; Zimmler, M.; Baranovski, G.; Garzoglio, G.; Loebel-Carpenter, L. et al.
Object Type:
Article
System:
The UNT Digital Library
DOE Hydrogen Program 2004 Annual Merit Review and Peer Evaluation Report
This document summarizes the project evaluations and comments from the DOE Hydrogen Program 2004 Annual Program Review. Hydrogen production, delivery and storage; fuel cells; technology validation; safety, codes and standards; and education R&D projects funded by DOE in FY2004 are reviewed.
Date:
October 1, 2004
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Program and Abstracts: DOE Solar Program Review Meeting 2004, 25--28 October 2004, Denver, Colorado
This booklet contains the agenda and abstracts for the 2004 U.S. DOE Solar Energy Technologies Program Review Meeting. The meeting was held in Denver, Colorado, October 25-28, 2004. More than 240 abstracts are contained in this publication. Topic areas for the research papers include laboratory research, program management, policy analysis, and deployment of solar technologies.
Date:
October 1, 2004
Creator:
unknown
Object Type:
Book
System:
The UNT Digital Library
Moving Toward Zero Energy Homes in California: ''Green'' House Effect Makes Sense in the Golden State.
This brochure describes The New American Home, an annual project that is focused on the future of homebuilding. Industry experts team to design, build, and monitor a demonstration home that has been equipped with the latest marketable technologies and projects.
Date:
December 1, 2004
Creator:
unknown
Object Type:
Text
System:
The UNT Digital Library
Redesign of the CKM RICH velocity spectrometers for use in a 1/4 GHz un separated beam
I report here a redesign of the CKM RICH velocity spectrometers for use in a 1/4 GHz unseparated beam adapted to the KTeV beam line and detector hall at Fermilab (P940). The redesigns reported here comprise modest modification to the original designs for CKM(E921) to accommodate the change in beam flux, momentum, and momentum bite of the primary beam. The ultimate performance of the velocity spectrometer systems, as quantified by the missing mass squared resolution for K{sup +} {yields} {pi}{sup +} x{sup 0}, remains largely unchanged from the original design.
Date:
January 1, 2004
Creator:
Cooper, Peter S. & Engelfried, Jurgen
Object Type:
Article
System:
The UNT Digital Library
Transforming the Market for Sustainable Design: Effective Public Policies and Strategies; Preprint
The federal government strives to lead by example in energy and resource management and architectural design. This paper explores how public agencies are supporting that goal by using sustainable practices in the design and operation of their buildings. It presents some elements to consider in establishing a policy for sustainable design and a system for implementing that policy, including some of the most difficult implementation issues agencies have to face. The paper also highlights some of the strengths and weaknesses of federal, state, and local policies and practices governing the design of public buildings; two case studies provide examples. Different approaches are included to help agencies evaluate their effectiveness at various levels of government. And recommendations are made for agencies and others who are committed to sustainable design in both new construction and major renovations.
Date:
May 1, 2004
Creator:
Carlisle, N.; Glickman, J.; Brown, M.; Foster, M.; Bennett, A. K. & Sandler, K.
Object Type:
Article
System:
The UNT Digital Library
A measurement of the t anti-t production cross-section in proton anti-proton collisions at s**(1/2) = 1.96-TeV with the D0 detector at the Tevatron using final states with a muon and jets
A preliminary measurement of the t{bar t} production cross section at {radical}s = 1.96 TeV is presented. The {mu}-plus-jets final state is analyzed in a data sample of 94 pb{sup -1} and a total of 14 events are selected with a background expectation of 11.7 {+-} 1.9 events. The measurement yields: {sigma}{sub p{bar p} {yields} t{bar t} + X} = 2.4{sub -3.5}{sup +4.2}(stat.){sub -2.6}{sup +2.5}(syst.) {+-} 0.3(lumi.) pb. The analysis, being part of a larger effort to re-observe the top quark in Tevatron Run II data and to measure the production cross section, is combined with results from all available analyses channels. The combined result yields: {sigma}{sub p{bar p}} {yields} t{bar t} + X = 8.1{sub -2.0}{sup +2.2}(stat.){sub -1.4}{sup +1.6}(syst.) {+-} 0.8(lumi.) pb.
Date:
February 1, 2004
Creator:
Klute, Markus
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Compressed Air System Control Strategies; Industrial Technologies Program (ITP) Compressed Air Tip Sheet No.7
BestPractices Program tip sheet discussing compressed air system control strategies.
Date:
August 1, 2004
Creator:
unknown
Object Type:
Text
System:
The UNT Digital Library
PV FAQs: What is the Energy Payback for PV?
How long does a PV system have to operate to recover the energy--and the associated generation of pollution and CO{sub 2}--that went into making the system? Energy paybacks for rooftop systems range from 1 to 4 years, depending on the system. Based on models and real data, the idea that PV cannot pay back its energy investment is simply a myth.
Date:
December 1, 2004
Creator:
unknown
Object Type:
Text
System:
The UNT Digital Library
Measurement of orbitally excited D-mesons at CDF II
Results of the first measurement of {sup 3}P orbitally excited neutral D-meson states, D*{sub 2}{sup 0} and D{sub 1}{sup 0}, produced in hadron collisions at the Tevatron are presented. Using data from the displaced track trigger, CDF II collects a large sample of these states in decay modes D*{sup +} {pi}{sup -}, D{sup +} {pi}{sup -}. Masses and widths of both states have been measured with precision better than or comparable to that of the world average.
Date:
December 1, 2004
Creator:
Gorelov, Igor V.
Object Type:
Article
System:
The UNT Digital Library
Small Wind Electric Systems: A Wisconsin Consumer's Guide
Small Wind Electric Systems: A Wisconsin Consumer's Guide provides consumers with information to help them determine whether a small wind electric system can provide all or a portion of the energy they need for their home or business based on their wind resource, energy needs, and their economics. Topics discussed in the guide include how to make a home more energy efficient, how to choose the correct turbine size, the parts of a wind electric system, how to determine whether enough wind resource exists, how to choose the best site for a turbine, how to connect a system to the utility grid, and whether it's possible to become independent of the utility grid using wind energy. In addition, the cover of the guide contains a regional wind resource map and a list of incentives and contacts for more information.
Date:
May 1, 2004
Creator:
unknown
Object Type:
Text
System:
The UNT Digital Library
Preliminary Structural Design of Composite Blades for Two- and Three-Blade Rotors
A computerized method has been developed to aid in the preliminary design of composite wind turbine blades. The method allows for arbitrary specification of the chord, twist, and airfoil geometry along the blade and an arbitrary number of shear webs. Given the blade external geometry description and its design load distribution, the Fortran code uses ultimate-strength and buckling-resistance criteria to compute the design thickness of load-bearing composite laminates. The code also includes an analysis option to obtain blade properties if a composite laminates schedule is prescribed. These properties include bending stiffness, torsion stiffness, mass, moments of inertia, elastic-axis offset, and center-of-mass offset along the blade. Nonstructural materials-gelcoat, nexus, and bonding adhesive-are also included for computation of mass. The code includes an option to format the output properties that can be directly input to advanced aeroelastic codes. This report summarizes the structural layout of composite laminates within the blade, the design approach, and the computational process. Finally, we present the results of two composite blades designed using this code in support of a project covering comparison of two- and three-blade rotors for a hypothetical turbine.
Date:
September 1, 2004
Creator:
Bir, G. & Migliore, P.
Object Type:
Report
System:
The UNT Digital Library
X-Ray Line Measurements with High Efficiency Bragg Crystals
We have studied the focusing properties of two highly oriented pyrolitic graphite (HOPG) spectrometers, which differ in the degree of the mosaic spread: ZYA with a low mosaic spread ({gamma}=0.4 degrees) and ZYH with a large mosaic spread ({gamma}=3.5 degrees). In order to assess the crystal performance for a variety of different experiments, various K{alpha} and K{beta} x-ray lines have been produced using a high-intensity ({approx}>10{sup 17} W/cm{sup 2}) short-pulse ({approx} 100 fs) laser beam focused onto Ti, V, Zn, and Cu foils. The measured spectral resolution of the HOPG crystals in both first and second order diffraction has been compared with theoretical predictions. Using known values for the peak reflectivity of HOPG crystals, we have also computed K{alpha} x-ray conversion efficiencies of Ti, V, Zn, and Cu. These results are important to estimate the optimal conditions under which different types of HOPG monochromators can be used for the detection of weak x-ray signals as the one encountered in x-ray Thomson/Compton scattering experiments.
Date:
April 1, 2004
Creator:
Pak, A; Gregori, G; Knight, J; Campbell, K; Landen, O & Glenzer, S
Object Type:
Article
System:
The UNT Digital Library