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Trends in Relative Abundance and Size of Selected Finfishes and Shellfishes Along the Texas Coast: November 1975-December 2016
Report documenting information about the trends in relative abundance and size of select fin fishes and shellfishes along the coast of Texas.
Date:
March 2018
Creator:
Martinez-Andrade, Fernando
Object Type:
Report
System:
The Portal to Texas History
Stock Assessment of the Main Hawaiian Islands Deep7 Bottomfish Complex Through 2010
From abstract: A stock assessment of the main Hawaiian Islands "Deep7" bottomfish complex was conducted through fishing year 2010, including projections to determine total allowable commercial catches (TACs) and their probabilities of overfishing. This assessment was conducted using re-audited bottomfish catch and effort data from commercial catch reports for the years 1948-2010.
Date:
October 2011
Creator:
Brodziak, Jon; Courtney, Dean; Wagatsuma, Lyn; O'Malley, Joseph; Lee, Hui-Hua; Walsh, William et al.
Object Type:
Report
System:
The UNT Digital Library
Defining Bioindicators for Freshwater Inflow Needs Studies
Report on a study of freshwater inflows in Galveston Bay as indicated by the population numbers of certain species that live in the bay such as Blue Catfish and and Pinfish.
Date:
2015
Creator:
Quigg, Antoinetta; Steichen, Jamie; Guthrie, Carla & Schoenbaechler, Calmee
Object Type:
Report
System:
The Portal to Texas History
Occupational Radiation Exposure at Commercial Nuclear Power Reactors and Other Facilities 2010, Prepared for the Nuclear Regulatory Commission, Office of Nuclear Regulatory Research, May 2012
This report summarizes the occupational exposure data that are maintained in the U.S. Nuclear Regulatory Commission’s (NRC) Radiation Exposure Information and Reporting System (REIRS). The bulk of the information contained in the report was compiled from the 2010 annual reports submitted by five of the seven categories of NRC licensees subject to the reporting requirements of 10 CFR 20.2206. Because there are no geologic repositories for high-level waste currently licensed and no NRC-licensed low-level waste disposal facilities currently in operation, only five categories will be considered in this report. The annual reports submitted by these licensees consist of radiation exposure records for each monitored individual. These records are analyzed for trends and presented in this report in terms of collective dose and the distribution of dose among the monitored individuals. Annual reports for 2010 were received from a total of 190 NRC licensees. The summation of reports submitted by the 190 licensees indicated that 192,424 individuals were monitored, 81,961 of whom received a measurable dose. When adjusted for transient workers who worked at more than one licensee during the year, there were actually 142,471 monitored individuals and 62,782 who received a measurable dose. The collective dose incurred by these individuals …
Date:
July 7, 2012
Creator:
McCormick, D. E. Lewis D. A. Hagemeyer Y. U.
Object Type:
Report
System:
The UNT Digital Library
Energy Savings Modeling of Standard Commercial Building Re-tuning Measures: Large Office Buildings
Today, many large commercial buildings use sophisticated building automation systems (BASs) to manage a wide range of building equipment. While the capabilities of BASs have increased over time, many buildings still do not fully use the BAS's capabilities and are not properly commissioned, operated or maintained, which leads to inefficient operation, increased energy use, and reduced lifetimes of the equipment. This report investigates the energy savings potential of several common HVAC system retuning measures on a typical large office building prototype model, using the Department of Energy's building energy modeling software, EnergyPlus. The baseline prototype model uses roughly as much energy as an average large office building in existing building stock, but does not utilize any re-tuning measures. Individual re-tuning measures simulated against this baseline include automatic schedule adjustments, damper minimum flow adjustments, thermostat adjustments, as well as dynamic resets (set points that change continuously with building and/or outdoor conditions) to static pressure, supply air temperature, condenser water temperature, chilled and hot water temperature, and chilled and hot water differential pressure set points. Six combinations of these individual measures have been formulated - each designed to conform to limitations to implementation of certain individual measures that might exist in typical …
Date:
June 1, 2012
Creator:
Fernandez, Nicholas; Katipamula, Srinivas; Wang, Weimin; Huang, Yunzhi & Liu, Guopeng
Object Type:
Report
System:
The UNT Digital Library
Analysis of Flows of the Brazos and Trinity Rivers and Tributaries
Report attempting to understand changes in flow characteristics in the Trinity and Brazos Rivers from water resource development and use.
Date:
September 2016
Creator:
Texas Water Development Board
Object Type:
Report
System:
The Portal to Texas History
Radionuclide Concentrations in Terrestrial Vegetation and Soil Samples On and Around the Hanford Site, 1971 Through 2008
Environmental monitoring is conducted on the U.S. Department of Energy (DOE) Hanford Site to comply with DOE Orders and federal and state regulations. Major objectives of the monitoring are to characterize contaminant levels in the environment and to determine site contributions to the contaminant inventory. This report focuses on surface soil and perennial vegetation samples collected between 1971 and 2008 as part of the Pacific Northwest National Laboratory Surface Environmental Surveillance Project performed under contract to DOE. Areas sampled under this program are located on the Hanford Site but outside facility boundaries and on public lands surrounding the Hanford Site. Additional samples were collected during the past 8 years under DOE projects that evaluated parcels of land for radiological release. These data were included because the same sampling methodology and analytical laboratory were used for the projects. The spatial and temporal trends of six radionuclides collected over a 38-year period were evaluated. The radionuclides----cobalt-60, cesium-137, strontium-90, plutonium-238, plutonium-239/240, and uranium (reported either as uranium-238 or total uranium)----were selected because they persist in the environment and are still being monitored routinely and reported in Hanford Site environmental reports. All these radionuclides were associated with plutonium production and waste management of activities …
Date:
July 29, 2011
Creator:
Simmons, Mary Ann; Poston, Ted M.; Fritz, Brad G. & Bisping, Lynn E.
Object Type:
Report
System:
The UNT Digital Library
Canada Geese at the Hanford Site – Trends in Reproductive Success, Migration Patterns, and Contaminant Concentrations
Pacific Northwest National Laboratory (PNNL) has conducted several studies for the U.S. Department of Energy (DOE) to evaluate the status and condition of Canada geese on the Hanford Reach of the Columbia River. This report summarizes results of studies of Canada geese (Branta canadensis moffitti) at the Hanford Site dating back to the 1950s. Results include information on the nesting (reproductive) success of Canada geese using the Hanford Reach, review of the local and regional migration of this species using data from bird banding studies, and summary data describing monitoring and investigations of the accumulation of Hanford-derived and environmental contaminants by resident goose populations.
Date:
May 25, 2010
Creator:
Simmons, Mary Ann; Poston, Ted M.; Tiller, Brett L.; Stegen, Amanda; Hand, Kristine D. & Brandenberger, Jill M.
Object Type:
Report
System:
The UNT Digital Library
Annual Energy Review 2010
This twenty-ninth edition of the Annual Energy Review (AER) presents the U.S. Energy Information Administration’s (EIA) most comprehensive look at integrated energy statistics. The summary statistics on the Nation’s energy production, consumption, trade, stocks, and prices cover all major energy commodities and all energy-consuming sectors of the U.S. economy from 1949 through 2010. The AER is EIA’s historical record of energy statistics and, because the coverage spans six decades, the statistics in this report are well-suited to long-term trend analysis.
Date:
October 1, 2011
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Stock Assessment Update for the Main Hawaiian Islands Deep7 Bottomfish Complex through 2013 with Projected Annual Catch Limits through 2016
From abstract: Report containing of a stock assessment update of the main Hawaiian Islands Deep7 bottom fish complex conducted through fishing year 2013. This update used the previous benchmark assessment data analysis, modeling, and stock projection approaches with one major improvement in CPUE standardization.
Date:
November 2014
Creator:
Brodziak, Jon; Yau, Annie; O'Malley, Joseph; Andrews, Allen; Humphreys, Robert; DeMartini, Ed et al.
Object Type:
Report
System:
The UNT Digital Library
Innovative Water Management Technology to Reduce Environment Impacts of Produced Water
Clemson University with Chevron as an industry partner developed and applied treatment technology using constructed wetland systems to decrease targeted constituents in simulated and actual produced waters to achieve reuse criteria and discharge limits. Pilot-scale and demonstration constructed wetland treatment system (CWTS) experiments led to design strategies for treating a variety of constituents of concern (COCs) in produced waters including divalent metals, metalloids, oil and grease, and ammonia. Targeted biogeochemical pathways for treatment of COCs in pilot-scale CWTS experiments included divalent metal sulfide precipitation through dissimilatory sulfate reduction, metal precipitation through oxidation, reduction of selenite to insoluble elemental selenium, aerobic biodegradation of oil, nitrification of ammonia to nitrate, denitrification of nitrate to nitrogen gas, separation of oil using an oilwater separator, and sorption of ammonia to zeolite. Treatment performance results indicated that CWTSs can be designed and built to promote specific environmental and geochemical conditions in order for targeted biogeochemical pathways to operate. The demonstration system successfully achieved consistent removal extents even while inflow concentrations of COCs in the produced water differed by orders of magnitude. Design strategies used in the pilot-scale and demonstration CWTSs to promote specific conditions that can be applied to designing full-scale CWTSs include plant and …
Date:
May 15, 2013
Creator:
Castle, James; Rodgers, John; Alley, Bethany; Coffey, Ruthanne; Jurinko, Kristen; Pardue, Michael et al.
Object Type:
Report
System:
The UNT Digital Library
Innovative Water Management Technology to Reduce Environment Impacts of Produced Water
Clemson University with Chevron as an industry partner developed and applied treatment technology using constructed wetland systems to decrease targeted constituents in simulated and actual produced waters to achieve reuse criteria and discharge limits. Pilot-scale and demonstration constructed wetland treatment system (CWTS) experiments led to design strategies for treating a variety of constituents of concern (COCs) in produced waters including divalent metals, metalloids, oil and grease, and ammonia. Targeted biogeochemical pathways for treatment of COCs in pilot-scale CWTS experiments included divalent metal sulfide precipitation through dissimilatory sulfate reduction, metal precipitation through oxidation, reduction of selenite to insoluble elemental selenium, aerobic biodegradation of oil, nitrification of ammonia to nitrate, denitrification of nitrate to nitrogen gas, separation of oil using an oilwater separator, and sorption of ammonia to zeolite. Treatment performance results indicated that CWTSs can be designed and built to promote specific environmental and geochemical conditions in order for targeted biogeochemical pathways to operate. The demonstration system successfully achieved consistent removal extents even while inflow concentrations of COCs in the produced water differed by orders of magnitude. Design strategies used in the pilot-scale and demonstration CWTSs to promote specific conditions that can be applied to designing full-scale CWTSs include plant and …
Date:
May 15, 2013
Creator:
Castle, James; Rodgers, John; Alley, Bethany; Coffey, Ruthanne; Jurinko, Kristen; Pardue, Michael et al.
Object Type:
Report
System:
The UNT Digital Library
Innovative Water Management Technology to Reduce Environmental Impacts of Produced Water
Clemson University with Chevron as an industry partner developed and applied treatment technology using constructed wetland systems to decrease targeted constituents in simulated and actual produced waters to achieve reuse criteria and discharge limits. Pilot-scale and demonstration constructed wetland treatment system (CWTS) experiments led to design strategies for treating a variety of constituents of concern (COCs) in produced waters including divalent metals, metalloids, oil and grease, and ammonia. Targeted biogeochemical pathways for treatment of COCs in pilot-scale CWTS experiments included divalent metal sulfide precipitation through dissimilatory sulfate reduction, metal precipitation through oxidation, reduction of selenite to insoluble elemental selenium, aerobic biodegradation of oil, nitrification of ammonia to nitrate, denitrification of nitrate to nitrogen gas, separation of oil using an oilwater separator, and sorption of ammonia to zeolite. Treatment performance results indicated that CWTSs can be designed and built to promote specific environmental and geochemical conditions in order for targeted biogeochemical pathways to operate. The demonstration system successfully achieved consistent removal extents even while inflow concentrations of COCs in the produced water differed by orders of magnitude. Design strategies used in the pilot-scale and demonstration CWTSs to promote specific conditions that can be applied to designing full-scale CWTSs include plant and …
Date:
May 15, 2013
Creator:
Castle, James; Rodgers, John; Alley, Bethany; Beebe, Alex; Coffey, Ruthanne; Jurinko, Kristen et al.
Object Type:
Report
System:
The UNT Digital Library
Evaluation of the Initial Isothermal Physics Measurements at the Fast Flux Test Facility, a Prototypic Liquid Metal Fast Breeder Reactor
The Fast Flux Test Facility (FFTF) was a 400-MWt, sodium-cooled, low-pressure, high-temperature, fast-neutron flux, nuclear fission reactor plant designed for the irradiation testing of nuclear reactor fuels and materials for the development of liquid metal fast breeder reactors (LMFBRs). The FFTF was fueled with plutonium-uranium mixed oxide (MOX) and reflected by Inconel-600. Westinghouse Hanford Company operated the FFTF as part of the Hanford Engineering Development Laboratory (HEDL) for the U.S. Department of Energy on the Hanford Site near Richland, Washington. Although the FFTF was a testing facility not specifically designed to breed fuel or produce electricity, it did provide valuable information for LMFBR projects and base technology programs in the areas of plant system and component design, component fabrication, prototype testing, and site construction. The major objectives of the FFTF were to provide a strong, disciplined engineering base for the LMFBR program, provide fast flux testing for other U.S. programs, and contribute to the development of a viable self-sustaining competitive U.S. LMFBR industry. During its ten years of operation, the FFTF acted as a national research facility to test advanced nuclear fuels, materials, components, systems, nuclear power plant operating and maintenance procedures, and active and passive reactor safety technologies; it …
Date:
March 1, 2010
Creator:
Bess, John D.
Object Type:
Report
System:
The UNT Digital Library
Discovery of Resources and Conflict in the Interstate System, 1816-2001
This study tests a theory detailing the increased likelihood of conflict following an initial resource discovery in the discovering nation and its region. A survey of prior literature shows a multitude of prior research concerning resources and nations' willingness to initiate conflict over those resources, but this prior research lacks any study concerning the effects of the discovery of resources on interstate conflict. The theory discusses the increased likelihood of conflict in the discovering nation as both target and initiator. It further looks at the increased chance of conflict in the discoverer's region due to security dilemmas and proxy wars. The results show strong support for the theory, suggesting nations making new resource discoveries must take extra care to avoid conflict.
Date:
May 2010
Creator:
Clark, Bradley
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Middle Matters: Political Responses to Income Inequality in an American State
This dissertation examines the effects of micro-level inequality on political preferences and voting behavior.
Date:
May 2018
Creator:
Mcgauvran, Ronald Joel
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Sources of Revenue: A History of State Taxes and Fees in Texas, 1972-2013
Guide to the history and current status of Texas state revenue sources from the Texas Comptroller of Public Accounts.
Date:
June 2014
Creator:
Texas. Comptroller's Office.
Object Type:
Article
System:
The Portal to Texas History
Final Numerical Model Report for the Brazos River Alluvium Aquifer Groundwater Availability Model
Provides a tool for managing the groundwater resources in the Brazos River Alluvium Aquifer.
Date:
August 2016
Creator:
Ewing, John E. & Jigmond, Marius
Object Type:
Report
System:
The Portal to Texas History
Direct Evaporative Precooling Model and Analysis
Evaporative condenser pre-cooling expands the availability of energy saving, cost-effective technology options (market engagement) and serves to expedite the range of options in upcoming codes and equipment standards (impacting regulation). Commercially available evaporative pre-coolers provide a low cost retrofit for existing packaged rooftop units, commercial unitary split systems, and air cooled chillers. We map the impact of energy savings and peak energy reduction in the 3 building types (medium office, secondary school, and supermarket) in 16 locations for three building types with four pad effectivenesses and show the effect for HVAC systems using either refrigerants R22 or R410A
Date:
January 1, 2011
Creator:
Shen, Bo; Ally, Moonis Raza; Rice, C Keith & Craddick, William G
Object Type:
Report
System:
The UNT Digital Library
Assessing Public Benefits and Costs of Freight Transportation Projects: Measuring Shippers' Value of Delay on the Freight System
This report gauges the economic impact of freight delay due to highway congestion, this project focuses on estimating shippers' value of delay (VOD).
Date:
July 2012
Creator:
Gong, Qi; Miao, Qing; Wang, Bruce X. & Adams, Teresa M.
Object Type:
Report
System:
The Portal to Texas History
Current and Projected Water Use in the Texas Mining and Oil and Gas Industry
This report "documents results for the four tasks described in the scope of work Contract #904830939: 1) identify major mining operations and analyze water-use patterns, 2) estimate current water use withdrawal and consumption, 3) develop long term water-demand projections at the county level, and 4)report the findings of the study and prepare an electronic database....The report is divided into several sections. In each of them, we successively address oil and gas, coal, aggregates, and other mineral substances." (p. 9).
Date:
June 2011
Creator:
Nicot, Jean-Philippe
Object Type:
Report
System:
The Portal to Texas History
Regional Water Plan: Region C, 2016, Volume 2. Appendices A-P
Appendices to the water plan for Region C including a bibliography, water supply charts and reports, water management strategies, and related reports.
Date:
December 2015
Creator:
Freese and Nichols, Inc.
Object Type:
Report
System:
The Portal to Texas History
Internal and External Drivers of Consumers’ Product Return Behaviors
Product return is a necessary part of the exchange process between companies and customers. It accounts for approximately 16% of total sales and a reduction in retailer / manufacturer profits by 3.8% on average. However, industry data also indicates that a significant portion of products are returned for reasons other than product failure – e.g., change of mind, found a lower price elsewhere, or fraudulent and unethical reasons. Consequently, many firms (e.g., REI) have altered their generous return policies to protect their profits. However, it’s been found that the restricted return policy could also reduce customer satisfaction, increase the perceived risk, and thus negatively affect customers’ loyalty towards a particular store or firm. Thus having a restrictive return policy does not help either. Extant literature mainly focuses on return policies. Little attention has been devoted to the product return behavior itself, thus missing the consumer’s perspective. This study, therefore, focuses on understanding consumers’ return behaviors, including different types of return behaviors, and the drivers and consequences of these different return behaviors. Towards this goal, this study first categorizes all possible types of consumers’ return behaviors into two broad categories - legitimate return behaviors and opportunistic return behaviors. Second, both internal …
Date:
August 2015
Creator:
Pei, Zhi "Kacie"
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Impact of Developmental Stress on Cardiovascular Physiology of Two Archosaur Species: American Alligator (Alligator mississippiensis) and Domestic Chicken (Gallus gallus)
Crocodilians and birds comprise sister taxa of archosaurs, the development of these vertebrates occurs within an egg case that leaves developing embryos susceptible to fluctuations in the nesting environment. Studies suggest that sub-optimal conditions alter morphological growth and cardiovascular physiology. Regulation of the cardiovascular system is immature in the subjects studied, and embryos may rely on humoral rather than neural control of the cardiovascular system. The primary focus of this dissertation was to assess regulatory mechanisms responsible for maintenance of arterial pressure and heart rate. Dehydration stress had marked effects on embryo growth, and altered baseline cardiovascular parameters, while leaving the response to humoral regulator, angiotensin II (Ang II), unaffected. However, dehydrated alligator embryos developed cholinergic tone on heart rate. Hypoxic incubated chicken embryos were reduced in embryo mass, and altered response to humoral regulatory components Ang I and adenosine in addition identifying a novel regulatory component of the cardiovascular response to acute hypoxia. Collectively, these studies add to the existing knowledge of cardiovascular physiology in embryonic archosaurs and suggest that some components of cardiovascular regulation are plastic following developmental stress.
Date:
December 2014
Creator:
Tate, Kevin B.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library