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Advanced Electric Submersible Pump Design Tool for Geothermal Applications
Electrical Submersible Pumps (ESPs) present higher efficiency, larger production rate, and can be operated in deeper wells than the other geothermal artificial lifting systems. Enhanced Geothermal Systems (EGS) applications recommend lifting 300 C geothermal water at 80kg/s flow rate in a maximum 10-5/8-inch diameter wellbore to improve the cost-effectiveness. In this paper, an advanced ESP design tool comprising a 1D theoretical model and a 3D CFD analysis has been developed to design ESPs for geothermal applications. Design of Experiments was also performed to optimize the geometry and performance. The designed mixed-flow type centrifugal impeller and diffuser exhibit high efficiency and head rise under simulated EGS conditions. The design tool has been validated by comparing the prediction to experimental data of an existing ESP product.
Date:
May 31, 2012
Creator:
Qi, Xuele; Turnquist, Norman & Ghasripoor, Farshad
Object Type:
Article
System:
The UNT Digital Library
Afghanistan Casualties: Military Forces and Civilians
This report collects statistics from a variety of sources on casualties sustained during Operation Enduring Freedom (OEF), which began on October 7, 2001, and is ongoing. OEF actions take place primarily in Afghanistan, but OEF casualties also include American casualties in other countries, listed within this report.
Date:
May 31, 2012
Creator:
Chesser, Susan G.
Object Type:
Report
System:
The UNT Digital Library
The Albany News (Albany, Tex.), Vol. 137, No. 2, Ed. 1 Thursday, May 31, 2012
Weekly newspaper from Albany, Texas that includes local, state and national news along with advertising.
Date:
May 31, 2012
Creator:
Lucas, Melinda L.
Object Type:
Newspaper
System:
The Portal to Texas History
The Altus Times (Altus, Okla.), Vol. 112, No. 294, Ed. 1 Thursday, May 31, 2012
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
May 31, 2012
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Alumina-Forming Austenitics: A New Approach to Thermal and Degradation Resistant Stainless Steels for Industrial Use
A series of developmental AFA alloys was selected for study based on: 25 Ni wt.% (alloys A-F), 20 wt% Ni (alloys G-H), and 12 Ni wt.% (alloys I-L). An emphasis in this work was placed on the lower alloy content direction for AFA alloys to reduce alloy raw material cost, rather than more highly alloyed and costly AFA alloys for higher temperature performance. Alloys A-D explored the effects of Al (3-4 wt.%) and C (0.05-0.2 wt.%) in the Fe-25Ni-14Cr-2Mn-2Mo-1W-1Nb wt.% base range; alloys E and F explored the effects of removing costly Mo and W additions in a Fe-25Ni-14Cr-4Al-2.5Nb-2Mn-0.2C base, alloys G and H examined Nb (1-2.5wt.%) and removal of Mo, W in a Fe-20Ni-14Cr-3Al-2Mn-0.2 C wt.% base; and alloys I-L examined effects of C (0.1-0.2 wt.%) and Mn (5-10 wt.%) on a low cost Fe-14Cr-12Ni-3Cu-2.5Al wt.% base (no Mo, W additions). Creep testing resulted in elemental trends that included the beneficial effect of higher carbon and lower niobium in 20-25%Ni AFA alloys and, the beneficial of lower Mn in 12%Ni AFA alloys. Corrosion tests in steam and sulfidation-oxidation environments showed, in general, these alloys were capable of a ten-fold improvement in performance when compared to conventional austenitic stainless steels. …
Date:
May 31, 2012
Creator:
Helmick, David A; Magee, John H & Brady, Michael P
Object Type:
Report
System:
The UNT Digital Library
Alvarado Star (Alvarado, Tex.), Vol. 16, No. 38, Ed. 1 Thursday, May 31, 2012
Weekly newspaper from Alvarado, Texas that includes local, state, and national news along with advertising.
Date:
May 31, 2012
Creator:
McMichen, Candy
Object Type:
Newspaper
System:
The Portal to Texas History
Archer County News (Archer City, Tex.), Vol. 104, No. 22, Ed. 1 Thursday, May 31, 2012
Weekly newspaper from Archer City, Texas that includes local, state and national news along with advertising.
Date:
May 31, 2012
Creator:
Phillips, Barbara
Object Type:
Newspaper
System:
The Portal to Texas History
Balance of Nanostructure and Bimetallic Interactions in Pt Model Fuel Cell Catalysts: An in Situ XAS and DFT Study
We have studied the effect of nanostructuring in Pt monolayer model electrocatalysts on a Rh(111) single-crystal substrate on the adsorption strength of chemisorbed species. In situ high energy resolution fluorescence detection X-ray absorption spectroscopy at the Pt L(3) edge reveals characteristic changes of the shape and intensity of the 'white-line' due to chemisorption of atomic hydrogen (H(ad)) at low potentials and oxygen-containing species (O/OH(ad)) at high potentials. On a uniform, two-dimensional Pt monolayer grown by Pt evaporation in ultrahigh vacuum, we observe a significant destabilization of both H(ad) and O/OH(ad) due to strain and ligand effects induced by the underlying Rh(111) substrate. When Pt is deposited via a wet-chemical route, by contrast, three-dimensional Pt islands are formed. In this case, strain and Rh ligand effects are balanced with higher local thickness of the Pt islands as well as higher defect density, shifting H and OH adsorption energies back toward pure Pt. Using density functional theory, we calculate O adsorption energies and corresponding local ORR activities for fcc 3-fold hollow sites with various local geometries that are present in the three-dimensional Pt islands.
Date:
May 31, 2012
Creator:
Friebel, Daniel; Viswanathan, Venkatasubramanian; Miller, Daniel James; Anniyev, Toyli; Ogasawara, Hirohito; Larsen, Ask Hjorth et al.
Object Type:
Article
System:
The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 92, No. 108, Ed. 1 Thursday, May 31, 2012
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
May 31, 2012
Creator:
Yanelli, Adam
Object Type:
Newspaper
System:
The Portal to Texas History
Brownwood Bulletin (Brownwood, Tex.), Vol. 112, No. 196, Ed. 1 Thursday, May 31, 2012
Weekly newspaper from Brownwood, Texas that includes local, state and national news along with advertising.
Date:
May 31, 2012
Creator:
Deason, Gene
Object Type:
Newspaper
System:
The Portal to Texas History
The Canadian Record (Canadian, Tex.), Vol. 122, No. 22, Ed. 1 Thursday, May 31, 2012
Weekly newspaper from Canadian, Texas that includes local, state and national news along with some advertising.
Date:
May 31, 2012
Creator:
Brown, Laurie Ezzell
Object Type:
Newspaper
System:
The Portal to Texas History
Central Asia: Regional Developments and Implications for U.S. Interests
This report discusses the U.S. policy toward the Central Asia. It provides background information and most recent developments in Afghanistan, Kyrgyzstan, Tajikistan, and Uzbekistan. U.S. objectives have included promoting free markets, democratization, human rights, energy development, and the forging of East-West and Central Asia-South Asia trade links.
Date:
May 31, 2012
Creator:
Nichol, Jim
Object Type:
Report
System:
The UNT Digital Library
The Cleburne Eagle News (Cleburne, Tex.), Ed. 1 Thursday, May 31, 2012
Weekly newspaper from Cleburne, Texas that includes local, state, and national news along with advertising.
Date:
May 31, 2012
Creator:
Oaks, Judy & Oaks, Kelly
Object Type:
Newspaper
System:
The Portal to Texas History
Code Qualification of Structural Materials for AFCI Advanced Recycling Reactors.
This report summarizes the further findings from the assessments of current status and future needs in code qualification and licensing of reference structural materials and new advanced alloys for advanced recycling reactors (ARRs) in support of Advanced Fuel Cycle Initiative (AFCI). The work is a combined effort between Argonne National Laboratory (ANL) and Oak Ridge National Laboratory (ORNL) with ANL as the technical lead, as part of Advanced Structural Materials Program for AFCI Reactor Campaign. The report is the second deliverable in FY08 (M505011401) under the work package 'Advanced Materials Code Qualification'. The overall objective of the Advanced Materials Code Qualification project is to evaluate key requirements for the ASME Code qualification and the Nuclear Regulatory Commission (NRC) approval of structural materials in support of the design and licensing of the ARR. Advanced materials are a critical element in the development of sodium reactor technologies. Enhanced materials performance not only improves safety margins and provides design flexibility, but also is essential for the economics of future advanced sodium reactors. Code qualification and licensing of advanced materials are prominent needs for developing and implementing advanced sodium reactor technologies. Nuclear structural component design in the U.S. must comply with the ASME Boiler …
Date:
May 31, 2012
Creator:
Natesan, K.; Li, M.; Majumdar, S.; Nanstad, R. K. & Sham, T.-L.
Object Type:
Report
System:
The UNT Digital Library
Cooper Review (Cooper, Tex.), Vol. 132, No. 22, Ed. 1 Thursday, May 31, 2012
Weekly newspaper from Cooper, Texas that includes local, state, and national news along with advertising.
Date:
May 31, 2012
Creator:
Roller, Cindy
Object Type:
Newspaper
System:
The Portal to Texas History
Cottonwood Creek and Fish Creek Watersheds Flood Protection Plan
Report on a flood protection plan for the Cottonwood Creek and Fish Creek Watersheds in the City of Arlington, Texas.
Date:
May 31, 2012
Creator:
Espey Consultants, Inc.
Object Type:
Report
System:
The Portal to Texas History
Countering Violent Extremism in the United States
This report provides examples of recent Administration "combating violent extremism" (CVE) activity and examines some of the risks and challenges evident in the Strategic Implementation Plan for Empowering Local Partners to Prevent Violent Extremism in the United States' (SIP's) three objectives. The report also diagrams and briefly discusses the "future activities and efforts" outlined in the SIP for each of these three objectives.
Date:
May 31, 2012
Creator:
Bjelopera, Jerome P.
Object Type:
Report
System:
The UNT Digital Library
Countering Violent Extremism in the United States
In August 2011, the Obama Administration announced its counter-radicalization strategy. It is devised to address the forces that influence some people living in the United States to acquire and hold radical or extremist beliefs that may eventually compel them to commit terrorism. This is the first such strategy for the federal government, which calls this effort “combating violent extremism” (CVE). This report provides examples of recent Administration CVE activity and examines some of the risks and challenges evident in the SIP's three objectives. The report also diagrams and briefly discusses the “future activities and efforts” outlined in the SIP for each of these three objectives. A number of areas may call for oversight from Congress. These include the following: picking partners and establishing "rules of the road," intervention with at-risk individuals, identifying programs to assist grassroots CVE efforts, countering extremist ideas, the lack of a lead agency, and transparency.
Date:
May 31, 2012
Creator:
Bjelopera, Jerome P.
Object Type:
Report
System:
The UNT Digital Library
Critical Infrastructure Protection: DHS Could Better Manage Security Surveys and Vulnerability Assessments
A letter report issued by the Government Accountability Office with an abstract that begins "The Department of Homeland Security (DHS) has conducted about 2,800 security surveys and vulnerability assessments on critical infrastructure and key resources (CIKR). DHS directs its protective security advisors to contact owners and operators of high-priority CIKR to offer to conduct surveys and assessments. However, DHS is not positioned to track the extent to which these are performed at high-priority CIKR because of inconsistencies between the databases used to identify these assets and those used to identify surveys and assessments conducted. GAO compared the two databases and found that of the 2,195 security surveys and 655 vulnerability assessments conducted for fiscal years 2009 through 2011, 135 surveys and 44 assessments matched and another 106 surveys and 23 assessments were potential matches for high-priority facilities. GAO could not match additional high-priority facilities because of inconsistencies in the way data were recorded in the two databases, for example, assets with the same company name had different addresses or an asset at one address had different names. DHS officials acknowledged that the data did not match and have begun to take actions to improve the collection and organization of the …
Date:
May 31, 2012
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Crowley Star (Crowley, Tex.), Vol. 26, No. 4, Ed. 1 Thursday, May 31, 2012
Weekly newspaper from Crowley, Texas that includes local, state, and national news along with advertising.
Date:
May 31, 2012
Creator:
Hinton, Jay
Object Type:
Newspaper
System:
The Portal to Texas History
Cyber Security Audit and Attack Detection Toolkit
This goal of this project was to develop cyber security audit and attack detection tools for industrial control systems (ICS). Digital Bond developed and released a tool named Bandolier that audits ICS components commonly used in the energy sector against an optimal security configuration. The Portaledge Project developed a capability for the PI Historian, the most widely used Historian in the energy sector, to aggregate security events and detect cyber attacks.
Date:
May 31, 2012
Creator:
Peterson, Dale
Object Type:
Report
System:
The UNT Digital Library
Defense Acquisitions: Further Action Needed to Improve DOD's Insight and Management of Long-term Maintenance Contracts
A letter report issued by the Government Accountability Office with an abstract that begins "At the departmental level, neither the Department of Defense (DOD) nor the individual military departments know the extent to which weapon system programs rely on long-term maintenance contracts. DOD policy requires DOD and the military departments to approve acquisition strategies and lifecycle sustainment plans, which include information on contractor support, but DOD officials reported that they do not collect information on the use of long-term contracts. DODs limited visibility over long-term maintenance contracts reflects broader DOD challenges with managing services acquisition. GAOs past work has identified the need for DOD to obtain better data on its contracted services to enable it to make more strategic decisions. DOD is considering a number of policy- and data-related initiatives that could improve its knowledge of these contracts, but these efforts are in the early stages of development."
Date:
May 31, 2012
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Description of Changkut festival
Houjahen Haokip describes the activities and rituals of the Changkut festival which celebrates the paddy and harvest. He is a male Thadou speaker from Manipur (currently living in Lambung village), around 80 years old at the time of recording.
Date:
May 31, 2012
Creator:
Haokip, Pauthang
Object Type:
Sound
System:
The UNT Digital Library
Development of a National Center for Hydrogen Technology: A Summary Report of Activities Completed at the National Center for Hydrogen Technology - Year 6
The Energy & Environmental Research Center (EERC) located in Grand Forks, North Dakota, has operated the National Center for Hydrogen Technology� (NCHT�) since 2005 under a Cooperative Agreement with the U.S. Department of Energy (DOE) National Energy Technology Laboratory (NETL). The EERC has a long history of hydrogen generation and utilization from fossil fuels, and under the NCHT Program, the EERC has accelerated its research on hydrogen generation and utilization topics. Since the NCHT�s inception, the EERC has received more than $65 million in funding for hydrogen-related projects ($24 million for projects in the NCHT, which includes federal and corporate partner development funds) involving more than 85 partners (27 with the NCHT). The NCHT Program�s nine activities span a broad range of technologies that align well with the Advanced Fuels Program goals and, specifically, those described in the Hydrogen from Coal Program research, development, and demonstration (RD&D) plan that refers to realistic testing of technologies at adequate scale, process intensification, and contaminant control. A number of projects have been completed that range from technical feasibility of several hydrogen generation and utilization technologies to public and technical education and outreach tools. Projects under the NCHT have produced hydrogen from natural gas, …
Date:
May 31, 2012
Creator:
Holmes, Michael
Object Type:
Report
System:
The UNT Digital Library