Serial/Series Title
Advanced Cuttings Transport Study Quarterly Report
8
MUSC Environmental Biosciences Progress Report
8
NOx Control Options and Integration for US Coal Fired Boilers Quarterly Report
8
Establishment of an Environmental Control Technology Laboratory With a Circulating Fluidized-Bed Combustion System Quarterly Report
5
Radioisotope Distribution Program Progress Report
5
Fiscal Year 2001
4
High Resolution Prediction of Gas Injection Process Performance for Heterogeneous Reservoirs Quarterly Report
4
An Advanced Fracture Characterization and Well Path Navigation System for Effective Re-Development and Enhancement of Ultimate Recovery From the Complex Monterey Reservoir of South Ellwood Field, Offshore California, Quarterly Report
3
Carbon Sequestration on Surface Mine Lands Quarterly Report
3
Differential Soil Impedance Obstacle Detection Quarterly Report
3
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Project to Develop and Demonstrate an Advanced Low Temperature Heat Recovery Absorption Chiller Module at a Distributed Data Center
None
Date:
September 30, 2014
Creator:
Sweetser, Richard
Object Type:
Report
System:
The UNT Digital Library
Direct Observation of Fine-Scale Energy Banding in Echo-Enabled Harmonic Generation
None
Date:
January 30, 2014
Creator:
Hemsing, E.; Xiang, D.; Dunning, M.; Weathersby, S.; Hast, C. & Raubenheimer, T.
Object Type:
Article
System:
The UNT Digital Library
Liquid-Air Interface Corrosion Testing Simulating The Environment Of Hanford Double Shell Tanks
Coupon tests on A537 carbon steel materials were conducted to evaluate the Liquid-Air Interface (LAI) corrosion susceptibility in a series of solutions designed to simulate conditions in the radioactive waste tanks located at the Hanford Nuclear Facility. The new stress corrosion cracking requirements and the impact of ammonia on LAI corrosion were the primary focus. The minimum R value (i.e., molar ratio of nitrite to nitrate) of 0.15 specified by the new stress corrosion cracking requirements was found to be insufficient to prevent pitting corrosion at the LAI. The pH of the test solutions was 10, which was actually less than the required pH 11 defined by the new requirements. These tests examined the effect of the variation of the pH due to hydroxide depletion at the liquid air interface. The pits from the current testing ranged from 0.001 to 0.008 inch in solutions with nitrate concentrations of 0.4 M and 2.0 M. The pitting and general attack that occurred progressed over the four-months. No significant pitting was observed, however, for a solution with a nitrate concentration of 4.5 M. The pitting depths observed in these partial immersion tests in unevaporated condensates ranged from 0.001 to 0.005 inch after 4 …
Date:
January 30, 2014
Creator:
Wiersma, B.; Gray, J. R.; Garcia-Diaz, B. L.; Murphy, T. H. & Hicks, K. R.
Object Type:
Report
System:
The UNT Digital Library
Semiconductor detectors with proximity signal readout
Semiconductor-based radiation detectors are routinely used for the detection, imaging, and spectroscopy of x-rays, gamma rays, and charged particles for applications in the areas of nuclear and medical physics, astrophysics, environmental remediation, nuclear nonproliferation, and homeland security. Detectors used for imaging and particle tracking are more complex in that they typically must also measure the location of the radiation interaction in addition to the deposited energy. In such detectors, the position measurement is often achieved by dividing or segmenting the electrodes into many strips or pixels and then reading out the signals from all of the electrode segments. Fine electrode segmentation is problematic for many of the standard semiconductor detector technologies. Clearly there is a need for a semiconductor-based radiation detector technology that can achieve fine position resolution while maintaining the excellent energy resolution intrinsic to semiconductor detectors, can be fabricated through simple processes, does not require complex electrical interconnections to the detector, and can reduce the number of required channels of readout electronics. Proximity electrode signal readout (PESR), in which the electrodes are not in physical contact with the detector surface, satisfies this need.
Date:
January 30, 2014
Creator:
Asztalos, Stephen J.
Object Type:
Report
System:
The UNT Digital Library
Vapor Space Corrosion Testing Simulating The Environment Of Hanford Double Shell Tanks
As part of an integrated program to better understand corrosion in the high level waste tanks, Hanford has been investigating corrosion at the liquid/air interface (LAI) and at higher areas in the tank vapor space. This current research evaluated localized corrosion in the vapor space over Hanford double shell tank simulants to assess the impact of ammonia and new minimum nitrite concentration limits, which are part of the broader corrosion chemistry limits. The findings from this study showed that the presence of ammonia gas (550 ppm) in the vapor space is sufficient to reduce corrosion over the short-term (i.e. four months) for a Hanford waste chemistry (SY102 High Nitrate). These findings are in agreement with previous studies at both Hanford and SRS which showed ammonia gas in the vapor space to be inhibitive. The presence of ammonia in electrochemical test solution, however, was insufficient to inhibit against pitting corrosion. The effect of the ammonia appears to be a function of the waste chemistry and may have more significant effects in waste with low nitrite concentrations. Since high levels of ammonia were found beneficial in previous studies, additional testing is recommended to assess the necessary minimum concentration for protection of carbon …
Date:
January 30, 2014
Creator:
Wiersma, B.; Gray, J. R.; Garcia-Diaz, B. L.; Murphy, T. H. & Hicks, K. R.
Object Type:
Report
System:
The UNT Digital Library
Colorado Better Buildings Project Final Report
The Colorado Better Buildings project intended to bring new and existing energy efficiency model programs to market with regional collaboration and funding partnerships. The goals for Boulder County and its program partners were to advance energy efficiency investments, stimulate economic growth in Colorado and advance the state’s energy independence. Collectively, three counties set out to complete 9,025 energy efficiency upgrades in 2.5 years and they succeeded in doing so. Energy efficiency upgrades have been completed in more than 11,000 homes and businesses in these communities. Boulder County and its partners received a $25 million BetterBuildings grant from the U.S. Department of Energy under the American Recovery and Reinvestment Act in the summer of 2010. This was also known as the Energy Efficiency and Conservation Block Grants program. With this funding, Boulder County, the City and County of Denver, and Garfield County set out to design programs for the residential and commercial sectors to overcome key barriers in the energy upgrade process. Since January 2011, these communities have paired homeowners and business owners with an Energy Advisor – an expert to help move from assessment to upgrade with minimal hassle. Pairing this step-by-step assistance with financing incentives has effectively addressed many …
Date:
December 30, 2013
Creator:
Strife, Susie & Yancey, Lea
Object Type:
Report
System:
The UNT Digital Library
TidGen Power System Commercialization Project
ORPC Maine, LLC, a wholly-owned subsidiary of Ocean Renewable Power Company, LLC (collectively ORPC), submits this Final Technical Report for the TidGen® Power System Commercialization Project (Project), partially funded by the U.S. Department of Energy (DE-EE0003647). The Project was built and operated in compliance with the Federal Energy Regulatory Commission (FERC) pilot project license (P-12711) and other permits and approvals needed for the Project. This report documents the methodologies, activities and results of the various phases of the Project, including design, engineering, procurement, assembly, installation, operation, licensing, environmental monitoring, retrieval, maintenance and repair. The Project represents a significant achievement for the renewable energy portfolio of the U.S. in general, and for the U.S. marine hydrokinetic (MHK) industry in particular. The stated Project goal was to advance, demonstrate and accelerate deployment and commercialization of ORPC’s tidal-current based hydrokinetic power generation system, including the energy extraction and conversion technology, associated power electronics, and interconnection equipment capable of reliably delivering electricity to the domestic power grid. ORPC achieved this goal by designing, building and operating the TidGen® Power System in 2012 and becoming the first federally licensed hydrokinetic tidal energy project to deliver electricity to a power grid under a power purchase agreement …
Date:
December 30, 2013
Creator:
Sauer, Christopher R. & McEntee, Jarlath
Object Type:
Report
System:
The UNT Digital Library
Additional Research Needs to Support the GENII Biosphere Models
In the course of evaluating the current parameter needs for the GENII Version 2 code (Snyder et al. 2013), areas of possible improvement for both the data and the underlying models have been identified. As the data review was implemented, PNNL staff identified areas where the models can be improved both to accommodate the locally significant pathways identified and also to incorporate newer models. The areas are general data needs for the existing models and improved formulations for the pathway models. It is recommended that priorities be set by NRC staff to guide selection of the most useful improvements in a cost-effective manner. Suggestions are made based on relatively easy and inexpensive changes, and longer-term more costly studies. In the short term, there are several improved model formulations that could be applied to the GENII suite of codes to make them more generally useful. • Implementation of the separation of the translocation and weathering processes • Implementation of an improved model for carbon-14 from non-atmospheric sources • Implementation of radon exposure pathways models • Development of a KML processor for the output report generator module data that are calculated on a grid that could be superimposed upon digital maps for …
Date:
November 30, 2013
Creator:
Napier, Bruce A.; Snyder, Sandra F. & Arimescu, Carmen
Object Type:
Report
System:
The UNT Digital Library
A Full-Featured User Friendly CO{sub 2}-EOR and Sequestration Planning Software
A Full-Featured, User Friendly CO{sub 2}-EOR and Sequestration Planning Software This project addressed the development of an integrated software solution that includes a graphical user interface, numerical simulation, visualization tools and optimization processes for reservoir simulation modeling of CO{sub 2}-EOR. The objective was to assist the industry in the development of domestic energy resources by expanding the application of CO{sub 2}-EOR technologies, and ultimately to maximize the CO{sub 2} sequestration capacity of the U.S. The software resulted in a field-ready application for the industry to address the current CO{sub 2}-EOR technologies. The software has been made available to the public without restrictions and with user friendly operating documentation and tutorials. The software (executable only) can be downloaded from NITEC’s website at www.nitecllc.com. This integrated solution enables the design, optimization and operation of CO{sub 2}-EOR processes for small and mid-sized operators, who currently cannot afford the expensive, time intensive solutions that the major oil companies enjoy. Based on one estimate, small oil fields comprise 30% of the of total economic resource potential for the application of CO{sub 2}-EOR processes in the U.S. This corresponds to 21.7 billion barrels of incremental, technically recoverable oil using the current “best practices”, and 31.9 billion …
Date:
November 30, 2013
Creator:
Savage, Bill
Object Type:
Report
System:
The UNT Digital Library
Gaseous Sulfate Solubility in Glass: Experimental Method
Sulfate solubility in glass is a key parameter in many commercial glasses and nuclear waste glasses. This report summarizes key publications specific to sulfate solubility experimental methods and the underlying physical chemistry calculations. The published methods and experimental data are used to verify the calculations in this report and are expanded to a range of current technical interest. The calculations and experimental methods described in this report will guide several experiments on sulfate solubility and saturation for the Hanford Waste Treatment Plant Enhanced Waste Glass Models effort. There are several tables of sulfate gas equilibrium values at high temperature to guide experimental gas mixing and to achieve desired SO3 levels. This report also describes the necessary equipment and best practices to perform sulfate saturation experiments for molten glasses. Results and findings will be published when experimental work is finished and this report is validated from the data obtained.
Date:
November 30, 2013
Creator:
Bliss, Mary
Object Type:
Report
System:
The UNT Digital Library
Methane Hydrate Field Program: Development of a Scientific Plan for a Methane Hydrate-Focused Marine Drilling, Logging and Coring Program
This topical report represents a pathway toward better understanding of the impact of marine methane hydrates on safety and seafloor stability and future collection of data that can be used by scientists, engineers, managers and planners to study climate change and to assess the feasibility of marine methane hydrate as a potential future energy resource. Our understanding of the occurrence, distribution and characteristics of marine methane hydrates is incomplete; therefore, research must continue to expand if methane hydrates are to be used as a future energy source. Exploring basins with methane hydrates has been occurring for over 30 years, but these efforts have been episodic in nature. To further our understanding, these efforts must be more regular and employ new techniques to capture more data. This plan identifies incomplete areas of methane hydrate research and offers solutions by systematically reviewing known methane hydrate “Science Challenges” and linking them with “Technical Challenges” and potential field program locations.
Date:
November 30, 2013
Creator:
Collett, Tim; Bahk, Jang-Jun; Frye, Matt; Goldberg, Dave; Husebo, Jarle; Koh, Carolyn et al.
Object Type:
Report
System:
The UNT Digital Library
National Cost-effectiveness of ASHRAE Standard 90.1-2010 Compared to ASHRAE Standard 90.1-2007
Pacific Northwest National Laboratory (PNNL) completed this project for the U.S. Department of Energy’s (DOE’s) Building Energy Codes Program (BECP). DOE’s BECP supports upgrading building energy codes and standards, and the states’ adoption, implementation, and enforcement of upgraded codes and standards. Building energy codes and standards set minimum requirements for energy-efficient design and construction for new and renovated buildings, and impact energy use and greenhouse gas emissions for the life of buildings. Continuous improvement of building energy efficiency is achieved by periodically upgrading energy codes and standards. Ensuring that changes in the code that may alter costs (for building components, initial purchase and installation, replacement, maintenance and energy) are cost-effective encourages their acceptance and implementation. ANSI/ASHRAE/IESNA Standard 90.1 is the energy standard for commercial and multi-family residential buildings over three floors.
Date:
November 30, 2013
Creator:
Thornton, Brian; Halverson, Mark A.; Myer, Michael; Loper, Susan A.; Richman, Eric E.; Elliott, Douglas B. et al.
Object Type:
Report
System:
The UNT Digital Library
328Post shot analysis of plasma conditions of Au Spheres illuminated by the URLLE Omega laser, as measured via Thomson scattering
None
Date:
October 30, 2013
Creator:
Rosen, M D; Ross, J S; Scott, H A; Landen, N; Dewald, E; Froula, D et al.
Object Type:
Article
System:
The UNT Digital Library
A 5kV, 3MHz Solid-State Modulator Based on the DSRD Switch for an Ultra-fast Beam Kicker
None
Date:
October 30, 2013
Creator:
Benwell, A.; Burkhart, C.; Krasnykh, A.; Tang, T. & Kardo-Sysoev, A.
Object Type:
Article
System:
The UNT Digital Library
The Benefits of Stress: Resolution of the Lifshitz Singularity
None
Date:
October 30, 2013
Creator:
Bao, Ning; Dong, Xi; Harrison, Sarah & Silverstein, Eva
Object Type:
Article
System:
The UNT Digital Library
Bipartite Field Theories: from D-Brane probes to Scattering Amplitudes
None
Date:
October 30, 2013
Creator:
Franco, Sebastian
Object Type:
Article
System:
The UNT Digital Library
Business Case for a Micro-Combined Heat and Power Fuel Cell System in Commercial Applications
Combined heat and power fuel cell systems (CHP-FCSs) provide consistent electrical power and hot water with greater efficiency and lower emissions than alternative sources. These systems can be used either as baseload, grid-connected, or as off-the-grid power sources. This report presents a business case for CHP-FCSs in the range of 5 to 50 kWe. Systems in this power range are considered micro-CHP-FCS. For this particular business case, commercial applications rather than residential or industrial are targeted. To understand the benefits of implementing a micro-CHP-FCS, the characteristics that determine their competitive advantage must first be identified. Locations with high electricity prices and low natural gas prices are ideal locations for micro-CHP-FCSs. Fortunately, these high spark spread locations are generally in the northeastern area of the United States and California where government incentives are already in place to offset the current high cost of the micro-CHP-FCSs. As a result of the inherently high efficiency of a fuel cell and their ability to use the waste heat that is generated as a CHP, they have higher efficiency. This results in lower fuel costs than comparable alternative small-scale power systems (e.g., microturbines and reciprocating engines). A variety of markets should consider micro-CHP-FCSs including those …
Date:
October 30, 2013
Creator:
Brooks, Kriston P.; Makhmalbaf, Atefe; Anderson, David M.; Amaya, Jodi P.; Pilli, Siva Prasad; Srivastava, Viraj et al.
Object Type:
Report
System:
The UNT Digital Library
Development, experimental performance and damage properties of x-ray optics for the LCLS free-electron laser
None
Date:
October 30, 2013
Creator:
Soufli, R & Al, E T
Object Type:
Article
System:
The UNT Digital Library
Distributed Smart Grid Asset Control Strategies for Providing Ancillary Services
With large-scale plans to integrate renewable generation driven mainly by state-level renewable portfolio requirements, more resources will be needed to compensate for the uncertainty and variability associated with intermittent generation resources. Distributed assets can be used to mitigate the concerns associated with renewable energy resources and to keep costs down. Under such conditions, performing primary frequency control using only supply-side resources becomes not only prohibitively expensive but also technically difficult. It is therefore important to explore how a sufficient proportion of the loads could assume a routine role in primary frequency control to maintain the stability of the system at an acceptable cost. The main objective of this project is to develop a novel hierarchical distributed framework for frequency based load control. The framework involves two decision layers. The top decision layer determines the optimal gain for aggregated loads for each load bus. The gains are computed using decentralized robust control methods, and will be broadcast to the corresponding participating loads every control period. The second layer consists of a large number of heterogeneous devices, which switch probabilistically during contingencies so that aggregated power change matches the desired amount according to the most recently received gains. The simulation results show …
Date:
October 30, 2013
Creator:
Kalsi, Karanjit; Zhang, Wei; Lian, Jianming; Marinovici, Laurentiu D.; Moya, Christian & Dagle, Jeffery E.
Object Type:
Report
System:
The UNT Digital Library
Facilitation of the Estuary/Ocean Subgroup and the Expert Regional Technical Group, Fiscal Year 2013 Annual Report
This project covers facilitation of the Estuary/Ocean Subgroup (EOS) for federal research, monitoring, and evaluation (RME) and the Expert Regional Technical Group (ERTG) for estuary habitat restoration. The EOS is part of the research, monitoring, and evaluation effort that the Action Agencies (Bonneville Power Administration [BPA], U.S. Army Corps of Engineers [Corps], U.S. Bureau of Reclamation) developed in response to obligations arising from the Endangered Species Act as applied to operation of the Federal Columbia River Power System (FCRPS). The EOS is tasked by National Marine Fisheries Service (NMFS) and the Action Agencies (AAs) to design and coordinate implementation of the federal RME plan for the lower Columbia River and estuary, including the river’s plume in the ocean. Initiated in 2002, the EOS is composed of members from BPA, the Corps, NMFS, and Pacific Northwest National Laboratory’s (PNNL’s) Marine Sciences Laboratory, and other agencies as necessary.
Date:
October 30, 2013
Creator:
Johnson, Gary E. & Sather, Nichole K.
Object Type:
Report
System:
The UNT Digital Library
Letter Report for Analytical Results for Two Soil Samples Associated with the Westinghouse Hematite Decommisioning Project in Hematite Missouri
Oak Ridge Associated Universities (ORAU), under the Oak Ridge Institute for Science and Education (ORISE) contract, received two soil samples on September 26, 2013 from the Westinghouse Hetnatite Decomminsioning project in Hematite, Missouri. The samples were analyzed for thorium-232, radium-226, uranium-235, and uranium-238 by gamma spectrometry and technetium-99 by liquid scintillation analysis. The samples were received in good condition. The sample collection data and identification numbers are tabulated. Also presented are the gamma spectrometry and technetium-99 data, respectively. The pertinent procedure references are included with the data tables.
Date:
October 30, 2013
Creator:
Ivey, Wade
Object Type:
Report
System:
The UNT Digital Library
Measurement of D0-D0bar Mixing and CP Violation in Two-Body D0 Decays
None
Date:
October 30, 2013
Creator:
Lees, J. P.; Poireau, V.; Tisserand, V.; Garra Tico, J.; Grauges, E.; Palano, A. et al.
Object Type:
Article
System:
The UNT Digital Library
NTOF-20M-IGNHI: A PRIMER AND SHORT HISTORY OF THE DETECTOR (OCTOBER 2013)
None
Date:
October 30, 2013
Creator:
McNaney, J M
Object Type:
Report
System:
The UNT Digital Library
NTOF-4M-BT: A PRIMER AND SHORT HISTORY OF THE DETECTOR (OCTOBER 2013)
None
Date:
October 30, 2013
Creator:
McNaney, J M
Object Type:
Report
System:
The UNT Digital Library