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Radiological Scoping Survey of the Scotia Depot, Scotia, NY (open access)

Radiological Scoping Survey of the Scotia Depot, Scotia, NY

The objectives of the radiological scoping survey were to collect adequate field data for use in evaluating the radiological condition of Scotia Depot land areas, warehouses, and support buildings.
Date: February 25, 2008
Creator: Bailey, E. N.
Object Type: Report
System: The UNT Digital Library
Quantifying the surface-subsurface biogeochemical coupling during the VERTIGO ALOHA and K2 studies (open access)

Quantifying the surface-subsurface biogeochemical coupling during the VERTIGO ALOHA and K2 studies

A central question addressed by the VERTIGO (VERtical Transport In the Global Ocean) study was 'What controls the efficiency of particle export between the surface and subsurface ocean'? Here, we present data from sites at ALOHA (N Central Pacific Gyre) and K2 (NW subarctic Pacific) on phytoplankton processes, and relate them via a simple planktonic foodweb model, to subsurface particle export (150-500 m). Three key factors enable quantification of the surface-subsurface coupling: a sampling design to overcome the temporal lag and spatial displacement between surface and subsurface processes; data on the size-partitioning of Net Primary Production (NPP) and subsequent transformations prior to export; estimates of the ratio of algal- to faecal-mediated vertical export flux. At ALOHA, phytoplankton were characterized by low stocks, NPP, F{sub v}/F{sub m} (N-limited), and were dominated by picoplankton. The HNLC waters at K2 were characterized by both two-fold changes in NPP and floristic shifts (high to low proportion of diatoms) between deployment 1 and 2. Prediction of export exiting the euphotic zone was based on size-partitioning of NPP, a copepod-dominated foodweb and a ratio of 0.2 (ALOHA) and 0.1 (K2) for algal:faecal particle flux. Predicted export was 20-22 mg POC m{sup -2} d{sup -1} at ALOHA …
Date: February 25, 2008
Creator: Boyd, P. W.; Gall, M. P.; Silver, M. W.; Bishop, J. K. B.; Coale, Susan L. & Bidigare, Robert R.
Object Type: Article
System: The UNT Digital Library
The Altus Times (Altus, Okla.), Vol. 109, No. 229, Ed. 1 Monday, February 25, 2008 (open access)

The Altus Times (Altus, Okla.), Vol. 109, No. 229, Ed. 1 Monday, February 25, 2008

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: February 25, 2008
Creator: Bush, Michael
Object Type: Newspaper
System: The Gateway to Oklahoma History
A derivation of the Pn reduction factors for a spherical hohlraum (open access)

A derivation of the Pn reduction factors for a spherical hohlraum

None
Date: February 25, 2008
Creator: Chang, B.
Object Type: Report
System: The UNT Digital Library
A Heavy Flavor Tracker for STAR (open access)

A Heavy Flavor Tracker for STAR

The STAR Collaboration proposes to construct a state-of-the-art microvertex detector,the Heavy Flavor Tracker (HFT), utilizing active pixel sensors and silicon strip technology. The HFT will significantly extend the physics reach of the STAR experiment for precision measurement of the yields and spectra of particles containing heavy quarks. This will be accomplished through topological identification of D mesons by reconstruction of their displaced decay vertices with a precision of approximately 50 mu m in p+p, d+A, and A+A collisions. The HFT consists of 4 layers of silicon detectors grouped into two sub-systems with different technologies, guaranteeing increasing resolution when tracking from the TPC and the Silicon Strip Detector (SSD) towards the vertex of the collision. The Intermediate Silicon Tracker (IST), consisting of two layers of single-sided strips, is located inside the SSD. Two layers of Silicon Pixel Detector (PIXEL) are inside the IST. The PIXEL detectors have the resolution necessary for a precision measurement of the displaced vertex. The PIXEL detector will use CMOS Active Pixel Sensors (APS), an innovative technology never used before in a collider experiment. The APSsensors are only 50 mu m thick and at a distance of only 2.5 cm from the interaction point. This opens up …
Date: February 25, 2008
Creator: Chasman, C.; Beavis, D.; Debbe, R.; Lee, J. H.; Levine, M. J.; Videbaek, F. et al.
Object Type: Report
System: The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 88, No. 56, Ed. 1 Monday, February 25, 2008 (open access)

The Baytown Sun (Baytown, Tex.), Vol. 88, No. 56, Ed. 1 Monday, February 25, 2008

Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date: February 25, 2008
Creator: Clements, Clifford E.
Object Type: Newspaper
System: The Portal to Texas History
Mexico's Drug Cartels (open access)

Mexico's Drug Cartels

This report details Mexican Cartels, their ties to gangs, use of financial corruption, and their cells within the United States of America. As well as, the policies that are used to eradicate drug trafficking and violence. Updated February 25, 2008.
Date: February 25, 2008
Creator: Cook, Colleen W.
Object Type: Report
System: The UNT Digital Library
Cybercrime: A Sketch of 18 U.S.C. 1030 and Related Federal Criminal Laws (open access)

Cybercrime: A Sketch of 18 U.S.C. 1030 and Related Federal Criminal Laws

This report shows Sketch of 18 U.S.C. 1030 and Related Federal Criminal Laws on cybercrime. The federal computer fraud and abuse statute,outlaws conduct that victimizes computer systems.
Date: February 25, 2008
Creator: Doyle, Charles
Object Type: Report
System: The UNT Digital Library
Cybercrime: An Overview of the Federal Computer Fraud and Abuse Statute and Related Federal Criminal Laws (open access)

Cybercrime: An Overview of the Federal Computer Fraud and Abuse Statute and Related Federal Criminal Laws

This report provides an overview of the federal computer fraud and abuse statute and related federal criminal laws on cybercrime.
Date: February 25, 2008
Creator: Doyle, Charles
Object Type: Report
System: The UNT Digital Library
Aviation Security: Background and Policy Options for Screening and Securing Air Cargo (open access)

Aviation Security: Background and Policy Options for Screening and Securing Air Cargo

This report discusses Background and Policy Options for Screening and Securing Air Cargo of Aviation Security.
Date: February 25, 2008
Creator: Elias, Bart
Object Type: Report
System: The UNT Digital Library
Health Insurance Reform and the 110th Congress (open access)

Health Insurance Reform and the 110th Congress

This report presents basic background on health insurance that may be useful to legislators considering health insurance reforms.
Date: February 25, 2008
Creator: Hearne, Jean
Object Type: Report
System: The UNT Digital Library
On the Relationship between Stress and Elastic Strain for Porous and Fractured Rock (open access)

On the Relationship between Stress and Elastic Strain for Porous and Fractured Rock

Modeling the mechanical deformations of porous and fractured rocks requires a stress-strain relationship. Experience with inherently heterogeneous earth materials suggests that different varieties of Hook's law should be applied within regions of the rock having significantly different stress-strain behavior, e.g., such as solid phase and various void geometries. We apply this idea by dividing a rock body conceptually into two distinct parts. The natural strain (volume change divided by rock volume at the current stress state), rather than the engineering strain (volume change divided by the unstressed rock volume), should be used in Hooke's law for accurate modeling of the elastic deformation of that part of the pore volume subject to a relatively large degree of relative deformation (i.e., cracks or fractures). This approach permits the derivation of constitutive relations between stress and a variety of mechanical and/or hydraulic rock properties. We show that the theoretical predictions of this method are generally consistent with empirical expressions (from field data) and also laboratory rock experimental data.
Date: February 25, 2008
Creator: Liu, Hui-Hai; Rutqvist, Jonny & Berryman, James G.
Object Type: Article
System: The UNT Digital Library
Sapulpa Daily Herald (Sapulpa, Okla.), Vol. 93, No. 89, Ed. 1 Monday, February 25, 2008 (open access)

Sapulpa Daily Herald (Sapulpa, Okla.), Vol. 93, No. 89, Ed. 1 Monday, February 25, 2008

Daily newspaper from Sapulpa, Oklahoma that includes local, state, and national news along with advertising.
Date: February 25, 2008
Creator: Mattox, Jami
Object Type: Newspaper
System: The Gateway to Oklahoma History
High resolution 17 keV to 75 keV backlighters for High Energy Density experiments (open access)

High resolution 17 keV to 75 keV backlighters for High Energy Density experiments

We have developed 17 keV to 75 keV 1-dimensional and 2-dimensional high-resolution (< 10 {micro}m) radiography using high-intensity short pulse lasers. High energy K-{alpha} sources are created by fluorescence from hot electrons interacting in the target material after irradiation by lasers with intensity I{sub L} > 10{sup 17} W/cm{sup 2}. We have achieved high resolution point projection 1-dimensional and 2-dimensional radiography using micro-foil and micro-wire targets attached to low-Z substrate materials. The micro-wire size was 10 {micro}m x 10 {micro}m x 300 {micro}m on a 300 {micro}m x 300 {micro}m x 5 {micro}m CH substrate. The radiography performance was demonstrated using the Titan laser at LLNL. We observed that the resolution is dominated by the micro-wire target size and there is very little degradation from the plasma plume, implying that the high energy x-ray photons are generated mostly within the micro-wire volume. We also observe that there are enough K{alpha} photons created with a 300 J, 1-{omega}, 40 ps pulse laser from these small volume targets, and that the signal-to-noise ratio is sufficiently high, for single shot radiography experiments. This unique technique will be used on future high energy density (HED) experiments at the new Omega-EP, ZR and NIF facilities.
Date: February 25, 2008
Creator: Park, H.; Maddox, B. R.; Giraldez, E.; Hatchett, S. P.; Hudson, L.; Izumi, N. et al.
Object Type: Article
System: The UNT Digital Library
DEVELOPMENT OF A ROTARY MICROFILTER FOR RADIOACTIVE WASTE APPLICATIONS (open access)

DEVELOPMENT OF A ROTARY MICROFILTER FOR RADIOACTIVE WASTE APPLICATIONS

The processing rate of Savannah River Site (SRS) high-level waste decontamination processes are limited by the flow rate of the solid-liquid separation. The baseline process, using a 0.1 micron cross-flow filter, produces {approx}0.02 gpm/sq. ft. of filtrate under expected operating conditions. Savannah River National Laboratory (SRNL) demonstrated significantly higher filter flux for actual waste samples using a small-scale rotary filter. With funding from the U. S. Department of Energy Office of Cleanup Technology, SRNL personnel are evaluating and developing the rotary microfilter for radioactive service at SRS. The authors improved the design for the disks and filter unit to make them suitable for high-level radioactive service. They procured two units using the new design, tested them with simulated SRS wastes, and evaluated the operation of the units. Work to date provides the following conclusions and program status: (1) The authors modified the design of the filter disks to remove epoxy and Ryton{reg_sign}. The new design includes welding both stainless steel and ceramic coated stainless steel filter media to a stainless steel support plate. The welded disks were tested in the full-scale unit. They showed good reliability and met filtrate quality requirements. (2) The authors modified the design of the unit, …
Date: February 25, 2008
Creator: Poirier, M; David Herman, D & Samuel Fink, S
Object Type: Article
System: The UNT Digital Library
SIGNIFICANT PROGRESS IN THE DEPLOYMENT OF NEW TECHNOLOGIES FOR THE RETRIEVAL OF HANFORD RADIOACTIVE WASTE STORAGE TANKS (open access)

SIGNIFICANT PROGRESS IN THE DEPLOYMENT OF NEW TECHNOLOGIES FOR THE RETRIEVAL OF HANFORD RADIOACTIVE WASTE STORAGE TANKS

None
Date: February 25, 2008
Creator: RE, RAYMOND; RA, DODD; KE, CARPENTER & MH, STURGES
Object Type: Article
System: The UNT Digital Library
Simulations of The Dalles Dam Proposed Full Length Spillwall (open access)

Simulations of The Dalles Dam Proposed Full Length Spillwall

This report presents results of a computational fluid dynamics (CFD) modeling study to evaluatethe impacts of a full-length spillwall at The Dalles Dam. The full-length spillwall is being designed and evaluated as a structural means to improve tailrace egress and thus survival of juvenile fish passing through the spillway. During the course of this study, a full-length spillwall at Bays 6/7 and 8/9 were considered. The U.S. Army Corps of Engineers (USACE) has proposed extending the spillwall constructed in the stilling basin between spillway Bays 6 and 7 about 590 ft farther downstream. It is believed that the extension of the spillwall will improve egress conditions for downstream juvenile salmonids by moving them more rapidly into the thalweg of the river hence reducing their exposure to predators. A numerical model was created, validated, and applied the The Dalles Dam tailrace. The models were designed to assess impacts to flow, tailrace egress, navigation, and adult salmon passage of a proposed spill wall extension. The more extensive model validation undertaken in this study greatly improved our confidence in the numerical model to represent the flow conditions in The Dalles tailrace. This study used these validated CFD models to simulate the potential impacts …
Date: February 25, 2008
Creator: Rakowski, Cynthia L.; Perkins, William A.; Richmond, Marshall C. & Serkowski, John A.
Object Type: Report
System: The UNT Digital Library
Joint reconstruction of CO2 plumes using disparate data (open access)

Joint reconstruction of CO2 plumes using disparate data

None
Date: February 25, 2008
Creator: Ramirez, A L & Friedmann, S J
Object Type: Report
System: The UNT Digital Library
RADON PROGENY AS AN EXPERIMENTAL TOOL FOR DOSIMETRY OF NANOAEROSOLS (open access)

RADON PROGENY AS AN EXPERIMENTAL TOOL FOR DOSIMETRY OF NANOAEROSOLS

The study of aerosol exposure and dosimetry measurements and related quantitation of health effects are important to the understanding of the consequences of air pollution, and are discussed widely in the scientific literature. During the last 10 years the need to correlate aerosol exposure and biological effects has become especially important due to rapid development of a new, revolutionary industry ?-- nanotechnology. Nanoproduct commerce is predicted to top $1 trillion by 2015. Quantitative assessment of aerosol particle behavior in air and in lung deposition, and dosimetry in different parts of the lung, particularly for nanoaerosols, remains poor despite several decades of study. Direct measurements on humans are still needed in order to validate the hollow cast, animal studies, and lung deposition modeling. We discuss here the use of nanoscale radon decay products as an experimental tool in the study of local deposition and lung dosimetry for nanoaerosols. The issue of the safe use of radon progeny in such measurements is discussed based on a comparison of measured exposure in 3 settings: general population, miners, and in a human experiment conducted at the Paul Scherer Institute (PSI) in Switzerland. One of the properties of radon progeny is that they consist partly …
Date: February 25, 2008
Creator: Ruzer, Lev; Ruzer, Lev S. & Apte, Michael G.
Object Type: Article
System: The UNT Digital Library
House Committees: Assignment Process (open access)

House Committees: Assignment Process

This report provides an overview of the assignment process on the house committees.
Date: February 25, 2008
Creator: Schneider, Judy
Object Type: Report
System: The UNT Digital Library
House Committees: Assignment Process (open access)

House Committees: Assignment Process

Committee assignments often determine the character of a Member's career. They are also important to the party leaders who organize the chamber and shape the composition of the committees. House rules identify some procedures for making committee assignments; Republican Conference and Democratic Caucus rules supplement these House rules and provide more specific criteria for committee assignments. This report describes these procedures and the basic functions of committee assignment in the House of Representatives.
Date: February 25, 2008
Creator: Schneider, Judy
Object Type: Report
System: The UNT Digital Library

[TDNA Linage Report "A," January 2008]

Linage report from January 2008 that details ad revenue from Texas Daily Newspaper Association members.
Date: February 25, 2008
Creator: Texas Daily Newspaper Association
Object Type: Dataset
System: The UNT Digital Library

[TDNA Linage Report "B," January 2008]

Linage report from January 2008 that details ad revenue from Texas Daily Newspaper Association members.
Date: February 25, 2008
Creator: Texas Daily Newspaper Association
Object Type: Dataset
System: The UNT Digital Library
Centers for Disease Control and Prevention: Changes in Obligations and Activities before and after Fiscal Year 2005 Budget Reorganization (open access)

Centers for Disease Control and Prevention: Changes in Obligations and Activities before and after Fiscal Year 2005 Budget Reorganization

Correspondence issued by the Government Accountability Office with an abstract that begins "Congress asked us to examine issues regarding changes in obligations for administrative activities--generally conducted in CDC's leadership and management levels--and public health programs--generally conducted in CDC's division level--before and after the organizational restructuring and budget reorganization. GAO examined the following questions: 1. How were obligations distributed between CDC's division level and CDC's leadership and management levels from fiscal years 2003 through 2006? 2. How have obligations and activities at CDC's leadership and management levels--including shared business services in the CDC Office of the Director--changed from fiscal year 2003 through fiscal year 2006? 3. How have obligations and activities at CDC's division level changed from fiscal years 2003 through 2006?The Centers for Disease Control and Prevention's (CDC) mission is to promote health and quality of life by preventing and controlling disease, injury, and disability. In fiscal year 2005, CDC, an agency within the Department of Health and Human Services (HHS), completed its first major organizational restructuring in more than 25 years, known as the Futures Initiative, as part of its efforts to prioritize its strategies, programs, resources, and needs. In accordance with the conference report accompanying its 2005 appropriation, …
Date: February 25, 2008
Creator: United States. Government Accountability Office.
Object Type: Text
System: The UNT Digital Library