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1,745 Matching Results
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1,745
Today Cedar Hill (DeSoto, Tex.), Vol. 42, No. 29, Ed. 1 Thursday, November 1, 2007
Weekly newspaper from DeSoto, Texas that includes local, state, and national news along with advertising.
Date:
November 1, 2007
Creator:
Morris, Angel
Object Type:
Newspaper
System:
The Portal to Texas History
Top Ten Reasons for DEOX as a Front End to Pyroprocessing
A front end step is being considered to augment chopping during the treatment of spent oxide fuel by pyroprocessing. The front end step, termed DEOX for its emphasis on decladding via oxidation, employs high temperatures to promote the oxidation of UO2 to U3O8 via an oxygen carrier gas. During oxidation, the spent fuel experiences a 30% increase in lattice structure volume resulting in the separation of fuel from cladding with a reduced particle size. A potential added benefit of DEOX is the removal of fission products, either via direct release from the broken fuel structure or via oxidation and volatilization by the high temperature process. Fuel element chopping is the baseline operation to prepare spent oxide fuel for an electrolytic reduction step. Typical chopping lengths range from 1 to 5 mm for both individual elements and entire assemblies. During electrolytic reduction, uranium oxide is reduced to metallic uranium via a lithium molten salt. An electrorefining step is then performed to separate a majority of the fission products from the recoverable uranium. Although DEOX is based on a low temperature oxidation cycle near 500oC, additional conditions have been tested to distinguish their effects on the process.[1] Both oxygen and air have …
Date:
November 1, 2007
Creator:
Westphal, B.R.; Bateman, K.J. & Herrmann, S.D.
Object Type:
Article
System:
The UNT Digital Library
The Tulia Herald (Tulia, Tex.), Vol. 99, No. 44, Ed. 1 Thursday, November 1, 2007
Weekly newspaper from Tulia, Texas that includes local, state, and national news along with extensive advertising.
Date:
November 1, 2007
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
TX-100 manufacturing final project report.
This report details the work completed under the TX-100 blade manufacturing portion of the Carbon-Hybrid Blade Developments: Standard and Twist-Coupled Prototype project. The TX-100 blade is a 9 meter prototype blade designed with bend-twist coupling to augment the mitigation of peak loads during normal turbine operation. This structural coupling was achieved by locating off axis carbon fiber in the outboard portion of the blade skins. The report will present the tooling selection, blade production, blade instrumentation, blade shipping and adapter plate design and fabrication. The baseline blade used for this project was the ERS-100 (Revision D) wind turbine blade. The molds used for the production of the TX-100 were originally built for the production of the CX-100 blade. The same high pressure and low pressure skin molds were used to manufacture the TX-100 skins. In order to compensate for the difference in skin thickness between the CX-100 and the TX-100, however, a new TX-100 shear web plug and mold were required. Both the blade assembly fixture and the root stud insertion fixture used for the CX-100 blades could be utilized for the TX-100 blades. A production run of seven TX-100 prototype blades was undertaken at TPI Composites during the month …
Date:
November 1, 2007
Creator:
Ashwill, Thomas D. & Berry, Derek S.
Object Type:
Report
System:
The UNT Digital Library
Ultrafast nanolaser device for detecting cancer in a single live cell.
Emerging BioMicroNanotechnologies have the potential to provide accurate, realtime, high throughput screening of live tumor cells without invasive chemical reagents when coupled with ultrafast laser methods. These optically based methods are critical to advancing early detection, diagnosis, and treatment of disease. The first year goals of this project are to develop a laser-based imaging system integrated with an in- vitro, live-cell, micro-culture to study mammalian cells under controlled conditions. In the second year, the system will be used to elucidate the morphology and distribution of mitochondria in the normal cell respiration state and in the disease state for normal and disease states of the cell. In this work we designed and built an in-vitro, live-cell culture microsystem to study mammalian cells under controlled conditions of pH, temp, CO2, Ox, humidity, on engineered material surfaces. We demonstrated viability of cell culture in the microsystem by showing that cells retain healthy growth rates, exhibit normal morphology, and grow to confluence without blebbing or other adverse influences of the material surfaces. We also demonstrated the feasibility of integrating the culture microsystem with laser-imaging and performed nanolaser flow spectrocytometry to carry out analysis of the cells isolated mitochondria.
Date:
November 1, 2007
Creator:
Gourley, Paul Lee & McDonald, Anthony Eugene
Object Type:
Report
System:
The UNT Digital Library
Ultrasensitive directional microphone arrays for military operations in urban terrain.
Acoustic sensing systems are critical elements in detection of sniper events. The microphones developed in this project enable unique sensing systems that benefit significantly from the enhanced sensitivity and extremely compact foot-print. Surface and bulk micromachining technologies developed at Sandia have allowed the design, fabrication and characterization of these unique sensors. We have demonstrated sensitivity that is only available in 1/2 inch to 1 inch studio reference microphones--with our devices that have only 1 to 2mm diameter membranes in a volume less than 1cm{sup 3}.
Date:
November 1, 2007
Creator:
Hall, Neal A.; Peterson, Kenneth Allen; Parker, Eric Paul; Resnick, Paul James; Okandan, Murat & Serkland, Darwin Keith
Object Type:
Report
System:
The UNT Digital Library
UNDP Briefing Note on Adaptation to Climate Change: Doing Development Differently
The document outlines UNDP's adaptation services and UNDP-GEF's adaptation portfolio that comprises 21 national, regional and global projects taking place in 45 countries.
Date:
August 2010
Creator:
United Nations Development Programme
Object Type:
Text
System:
The UNT Digital Library
Unlawful Internet Gambling Enforcement Act and Regulations Proposed for Its Implementation
None
Date:
November 1, 2007
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Updated Estimates of Mortality and Injury of Cetaceans in the Hawaii-based Longline Fishery, 1994-2005
From abstract: This report presents updated estimates of annual mortality and serious injury of cetaceans for the Hawaii-based longline fishery during 1994-2005, including information on set type and targeted fish species. The fishery has targeted primarily tunas and swordfish...
Date:
November 2007
Creator:
Forney, Karin A. & Kobayashi, Donald R.
Object Type:
Report
System:
The UNT Digital Library
Upgrades to the Fermilab Numi Beamline
None
Date:
November 1, 2007
Creator:
Martens, Michael A.; Childress, Sam; Grossman, Nancy; Hurh, Patrick; Hylen, James; Marchionni, Alberto et al.
Object Type:
Article
System:
The UNT Digital Library
Use of CAPE-OPEN Standard in US-UK Collaboration on Virtual Plant Simulation
Under the auspices of a US-UK Memorandum of Understanding and Implementing Agreement for fossil energy R&D (http://us-uk.fossil.energy.gov/), the US Department of Energy’s (DOE) National Energy Technology Laboratory (NETL) and the UK Department of Trade and Industry (DTI) have recently completed a three-year collaboration on virtual plant modeling and simulation technology for advanced fossil-energy power generation systems. The R&D collaboration was aimed at taking full advantage of the synergies between NETL’s ongoing Advanced Process Engineering Co-Simulator (APECS) project and the UK’s three-year Virtual Plant Demonstration Model (VPDM) project. The key objective of this collaboration has been the development of compatible, open standards-based US and UK technology for process/equipment co-simulation. To achieve plug-and-play model interoperability, the collaboration leveraged the process-industry CAPE-OPEN (CO) software standard which is managed and disseminated by the CO Laboratories Network (www.colan.org).
Date:
November 1, 2007
Creator:
Zitney, S. E.
Object Type:
Article
System:
The UNT Digital Library
USING COPULAS TO MODEL DEPENDENCE IN SIMULATION RISK ASSESSMENT
Typical engineering systems in applications with high failure consequences such as nuclear reactor plants often employ redundancy and diversity of equipment in an effort to lower the probability of failure and therefore risk. However, it has long been recognized that dependencies exist in these redundant and diverse systems. Some dependencies, such as common sources of electrical power, are typically captured in the logic structure of the risk model. Others, usually referred to as intercomponent dependencies, are treated implicitly by introducing one or more statistical parameters into the model. Such common-cause failure models have limitations in a simulation environment. In addition, substantial subjectivity is associated with parameter estimation for these models. This paper describes an approach in which system performance is simulated by drawing samples from the joint distributions of dependent variables. The approach relies on the notion of a copula distribution, a notion which has been employed by the actuarial community for ten years or more, but which has seen only limited application in technological risk assessment. The paper also illustrates how equipment failure data can be used in a Bayesian framework to estimate the parameter values in the copula model. This approach avoids much of the subjectivity required to …
Date:
November 1, 2007
Creator:
Kelly, Dana L.
Object Type:
Article
System:
The UNT Digital Library
Visualizing MCNP Tally Segment Geometry and Coupling Results with ABAQUS
The Advanced Graphite Creep test, AGC-1, is planned for irradiation in the Advanced Test Reactor (ATR) in support of the Next Generation Nuclear Plant program. The experiment requires very detailed neutronics and thermal hydraulics analyses to show compliance with programmatic and ATR safety requirements. The MCNP model used for the neutronics analysis required hundreds of tally regions to provide the desired detail. A method for visualizing the hundreds of tally region geometries and the tally region results in 3 dimensions has been created to support the AGC-1 irradiation. Additionally, a method was created which would allow ABAQUS to access the results directly for the thermal analysis of the AGC-1 experiment.
Date:
November 1, 2007
Creator:
Parry, J. R. & Galbraith, J. A.
Object Type:
Article
System:
The UNT Digital Library
Wikify! Linking Documents to Encyclopedic Knowledge
This paper introduces the use of Wikipedia as a resource for automatic keyword extraction and word sense disambiguation, and shows how this online encyclopedia can be used to achieve state-of-the-art results on both these tasks.
Date:
November 2007
Creator:
Mihalcea, Rada, 1974- & Csomai, Andras
Object Type:
Paper
System:
The UNT Digital Library
Wireless Technology and Spectrum Demand: Advanced Wireless Services
None
Date:
November 1, 2007
Creator:
Moore, Linda K.
Object Type:
Report
System:
The UNT Digital Library
The Wynnewood Gazette (Wynnewood, Okla.), Vol. 105, No. 31, Ed. 1 Thursday, November 1, 2007
Weekly newspaper from Wynnewood, Oklahoma that includes local, state, and national news along with advertising.
Date:
November 1, 2007
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Yellow Jacket (Brownwood, Tex.), Vol. 98, No. 5, Ed. 1, Thursday, November 1, 2007
Weekly student newspaper from Howard Payne University in Brownwood, Texas that includes local, state and campus news along with advertising.
Date:
November 1, 2007
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History