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Upscaling coupled pore-scale reactive transport processes to the continuum scale
None
Date:
April 5, 2006
Creator:
Lichtner, Peter C. & Kang, Qinjun
System:
The UNT Digital Library
Uranium Reduction by Clostridia
The FRC groundwater and sediment contain significant concentrations of U and Tc and are dominated by low pH, and high nitrate and Al concentrations where dissimilatory metal reducing bacterial activity may be limited. The presence of Clostridia in Area 3 at the FRC site has been confirmed and their ability to reduce uranium under site conditions will be determined. Although the phenomenon of uranium reduction by Clostridia has been firmly established, the molecular mechanisms underlying such a reaction are not very clear. The authors are exploring the hypothesis that U(VI) reduction occurs through hydrogenases and other enzymes (Matin and Francis). Fundamental knowledge of metal reduction using Clostridia will allow us to exploit naturally occurring processes to attenuate radionuclide and metal contaminants in situ in the subsurface. The outline for this report are as follows: (1) Growth of Clostridium sp. under normal culture conditions; (2) Fate of metals and radionuclides in the presence of Clostridia; (3) Bioreduction of uranium associated with nitrate, citrate, and lepidocrocite; and (4) Utilization of Clostridium sp. for immobilization of uranium at the FRC Area 3 site.
Date:
April 5, 2006
Creator:
Francis, A. J.; Dodge, Cleveland J. & Gillow, Jeffrey B.
System:
The UNT Digital Library
Use of Isotopic Tracers at the Hanford Site
None
Date:
April 5, 2006
Creator:
DePaolo, Don; Conrad, Mark & Christensen, John
System:
The UNT Digital Library
Wind Shear Characteristics at Central Plains Tall Towers
The objectives of this report are: (1) Analyze wind shear characteristics at tall tower sites for diverse areas in the central plains (Texas to North Dakota)--Turbines hub heights are now 70-100 m above ground and Wind measurements at 70-100+ m have been rare. (2) Present conclusions about wind shear characteristics for prime wind energy development regions.
Date:
June 5, 2006
Creator:
Schwartz, M. & Elliott, D.
System:
The UNT Digital Library
Harnessing Innovation for a Renewable Energy Future
Keynote presentation given by Dan Arvizu at the Green Engineering Summit held in Anaheim, California on October 5, 2006.
Date:
October 5, 2006
Creator:
Arvizu, D.
System:
The UNT Digital Library
Growing Significance of Renewable Energy
Presentation on renewable energy innovations and policies by Dr. Dan Arvizu of the National Renewable Energy Laboratory.
Date:
February 5, 2007
Creator:
Arvizu, D. E.
System:
The UNT Digital Library
Integrating Innovation and Policy for a Renewable Energy Future
Presentation on renewable energy innovations and policies by Dr. Dan Arvizu of the National Renewable Energy Laboratory.
Date:
February 5, 2007
Creator:
Arvizu, D. E.
System:
The UNT Digital Library
Educating Consumers: New Content on Diesel Vehicles, Diesel Exhaust Fluid, and Selective Catalytic Reduction Technologies on the AFDC
Presentation covers new content available on the Alternative Fuels and Advanced Vehicle Data Center regarding diesel vehicles, diesel exhaust fluid, and selective catalytic reduction technologies.
Date:
August 5, 2008
Creator:
Brodt-Giles, D.
System:
The UNT Digital Library
Striving for a Standard Protocol for Preconditioning or Stabilization of Polycrystalline Thin Film Photovoltaic Modules
Stabilization/preconditioning promise stable performance. CV-derived depletion width changes & hysteresis appear linked to stability; dark exposure in forward bias emulates light exposure at 1-sun.
Date:
August 5, 2009
Creator:
del Cueto, J. A.; Deline, C. A.; Albin, D. S.; Rummel, S. R. & Anderberg, A.
System:
The UNT Digital Library
Clean Energy Opportunity Forum - Creating the New Energy Economy
A presentation at the 22nd Industry Growth Forum by Marty Murphy about making connections and business opportunities in the cleantech industry.
Date:
November 5, 2009
Creator:
Murphy, L. M.
System:
The UNT Digital Library
Deployment Partnerships (Presentation)
This presentation, Deployment Partnerships, was given by Mike Pacheco at the Industry Growth Forum in Golden, Colorado, November 5, 2009.
Date:
November 5, 2009
Creator:
Pacheco, M.
System:
The UNT Digital Library
Doing Business with NREL
This presentation, Working With NREL, was given by Casey Porto at the Industry Growth Forum in Golden, Colorado, November 5, 2009.
Date:
November 5, 2009
Creator:
Porto, C.
System:
The UNT Digital Library
Working with NREL - Commercialization
None
Date:
November 5, 2009
Creator:
unknown
System:
The UNT Digital Library
Exceeding Expectations: Learnings from the FCV Learning Demo
This presentation summarizes findings of the fuel cell vehicle learning demonstration of the Fuel Cell Technologies Program.
Date:
May 5, 2010
Creator:
Wipke, K.; Sprik, S.; Kurtz, J. & Ramsden, T.
System:
The UNT Digital Library
Power Electronics Thermal Control
Thermal management plays an important part in the cost of electric drives in terms of power electronics packaging. Very promising results have been obtained by using microporous coatings and skived surfaces in conjunction with single-phase and two-phase flows. Sintered materials and thermoplastics with embedded fibers show significant promise as thermal interface materials, or TIMs. Appropriate cooling technologies depend on the power electronics package application and reliability.
Date:
May 5, 2010
Creator:
Narumanchi, S.
System:
The UNT Digital Library
Module Technology: Current Practice and Issues
PV modules must provide mechanical support for the cells, protect the world from the voltages inside, protect the cells, diodes and interconnects from the weather outside, couple as much light as possible into the PV cells and minimize the temperature increase of the cells. The package must continue to serve these functions for at least 25 years as that is the typical module warranty period today. Furthermore the package must do all this for as low a cost as possible since the key to large scale PV growth is a reduction in cost while retaining excellent module reliability and durability. This paper will review current module construction practices for both crystalline silicon and thin film PV with emphasis on explaining why the present designs and materials have been selected. Possible long term issues with today's designs and materials will be discussed. Several proposed solutions to these issues will be presented, highlighting the research efforts that will be necessary in order to verify that they can cost effectively solve the identified issues.
Date:
October 5, 2010
Creator:
Wohlgemuth, J.
System:
The UNT Digital Library
Electric Vehicle Grid Integration for Sustainable Military Installations
This presentation discusses electric vehicle grid integration for sustainable military installations. Fort Carson Military Reservation in Colorado Springs is used as a case study.
Date:
May 5, 2011
Creator:
Simpson, M.
System:
The UNT Digital Library