2012 ELECTRONIC PROCESSES IN ORGANIC MATERIALS GORDON RESEARCH SEMINAR, JUNE 2-8, 2012 (open access)

2012 ELECTRONIC PROCESSES IN ORGANIC MATERIALS GORDON RESEARCH SEMINAR, JUNE 2-8, 2012

This meeting focuses on the latest progress and challenges regarding organic electronics devices, artificial light-harvesting systems, and inorganic/organic hybrid nanoscale systems and especially on the synergy between these fields.
Date: June 8, 2012
Creator: Eisele, Dorthe
Object Type: Article
System: The UNT Digital Library
2012 MULTIPHOTON PROCESSES GRC, JUNE 3-8, 2012 (open access)

2012 MULTIPHOTON PROCESSES GRC, JUNE 3-8, 2012

The sessions will focus on:  Attosecond science;  Strong-field processes in molecules and solids;  Generation of harmonics and attosecond pulses;  Free-electron laser experiments and theory;  Ultrafast imaging;  Applications of very high intensity lasers;  Propagation of intense laser fields.
Date: March 8, 2012
Creator: Walker, Barry
Object Type: Article
System: The UNT Digital Library
2013 Inorganic Reaction Mechanisms Gordon Research Conference (March 3-8, 2013 - Hotel Galvez, Galveston TX) (open access)

2013 Inorganic Reaction Mechanisms Gordon Research Conference (March 3-8, 2013 - Hotel Galvez, Galveston TX)

The 2013 Gordon Conference on Inorganic Reaction Mechanisms will present cutting-edge research on the molecular aspects of inorganic reactions involving elements from throughout the periodic table and state-of-the art techniques that are used in the elucidation of reaction mechanisms. The Conference will feature a wide range of topics, such as homogeneous and heterogeneous catalysis, metallobiochemistry, electron-transfer in energy reactions, polymerization, nitrogen fixation, green chemistry, oxidation, solar conversion, alkane functionalization, organotransition metal chemistry, and computational chemistry. The talks will cover themes of current interest including energy, materials, and bioinorganic chemistry. Sections cover: Electron-Transfer in Energy Reactions; Catalytic Polymerization and Oxidation Chemistry; Kinetics and Spectroscopy of Heterogeneous Catalysts; Metal-Organic Chemistry and its Application in Synthesis; Green Energy Conversion;Organometallic Chemistry and Activation of Small Molecules; Advances in Kinetics Modeling and Green Chemistry; Metals in Biology and Disease; Frontiers in Catalytic Bond Activation and Cleavage.
Date: December 8, 2012
Creator: Abu-Omar, Mahdi M.
Object Type: Article
System: The UNT Digital Library
Advanced Power Electronics for LED Drivers (open access)

Advanced Power Electronics for LED Drivers

Advanced Research Projects Agency-Energy project sheet summarizing general information about the Agile Delivery of Electrical Power Technology (ADEPT) program including critical needs, innovation and advantages, impacts, and contact information. This sheet discusses advanced power electronics for LED drivers as part of the "Advanced Technologies for Integrated Power Electronics" project.
Date: May 8, 2012
Creator: Massachusetts Institute of Technology
Object Type: Text
System: The UNT Digital Library
ANALYSIS OF HARRELL MONOSODIUM TITANATE LOT #s 46000606120, 46000722120, AND 46000808120 (open access)

ANALYSIS OF HARRELL MONOSODIUM TITANATE LOT #s 46000606120, 46000722120, AND 46000808120

Monosodium titanate (MST) for use in the Actinide Removal Process (ARP) must be qualified and verified in advance. A single qualification sample for each batch of material is sent to SRNL for analysis, as well as a statistical sampling of verification samples. The Harrell Industries Lot #s 46000706120, 46000722120, and 460008081120 qualification and verification samples met each of the selected specification requirements that were tested with the exception of a few pails being marginally below the lower weight percent solids limit. These deviations from the specifications are viewed as negligible since the corresponding density of the slurries indicates no appreciable shortage of MST solids. Therefore, SRNL recommends acceptance and use of these pails.
Date: October 8, 2012
Creator: Taylor-Pashow, K.
Object Type: Report
System: The UNT Digital Library
Analysis of Scalable Data-Privatization Threading Algorithms for Hybrid MPI/OpenMP Parallelization of Molecular Dynamics (open access)

Analysis of Scalable Data-Privatization Threading Algorithms for Hybrid MPI/OpenMP Parallelization of Molecular Dynamics

None
Date: February 8, 2012
Creator: Kunaseth, M.; Richards, D. F.; Glosli, J. N.; Kalia, R. K.; Nakano, A. & Vashista, P.
Object Type: Article
System: The UNT Digital Library
Annual Site Environmental Report for Calendar Years 2009 to 2010 (open access)

Annual Site Environmental Report for Calendar Years 2009 to 2010

This report presents the results of environmental activities and monitoring programs at the Princeton Plasma Physics Laboratory (PPPL) for Calendar Years 2009-2010. The report provides the U.S. Department of Energy (DOE) and the public with information on the level of radioactive and non-radioactive pollutants, if any, that are released into the environment as a result of PPPL operations. The report also summarizes environmental initiatives, assessments, and programs that were undertaken in 2009-2010. The objective of the Site Environmental Report is to document PPPL's efforts to protect the public's health and the environment through its environmental protection, safety, and health programs. __________________________________________________
Date: August 8, 2012
Creator: Finley, Virginia
Object Type: Report
System: The UNT Digital Library
Astatine-211 Radiochemistry: The Development of Methodologies for High Activity Level Radiosynthesis (open access)

Astatine-211 Radiochemistry: The Development of Methodologies for High Activity Level Radiosynthesis

Targeted radionuclide therapy is emerging as a viable approach for cancer treatment because of its potential for delivering curative doses of radiation to malignant cell populations while sparing normal tissues. Alpha particles such as those emitted by 211At are particularly attractive for this purpose because of their short path length in tissue and high energy, making them highly effective in killing cancer cells. The current impact of targeted radiotherapy in the clinical domain remains limited despite the fact that in many cases, potentially useful molecular targets and labeled compounds have already been identified. Unfortunately, putting these concepts into practice has been impeded by limitations in radiochemistry methodologies. A critical problem is that the synthesis of therapeutic radiopharmaceuticals provides additional challenges in comparison to diagnostic reagents because of the need to perform radio-synthesis at high levels of radioactivity. This is particularly important for {alpha}-particle emitters such as 211At because they deposit large amounts of energy in a highly focal manner. The overall objective of this project is to develop convenient and reproducible radiochemical methodologies for the radiohalogenation of molecules with the {alpha}-particle emitter 211At at the radioactivity levels needed for clinical studies. Our goal is to address two problems in astatine …
Date: August 8, 2012
Creator: Zalutsky, Michael R.
Object Type: Report
System: The UNT Digital Library
Biological and Environmental Research: Climate and Environmental Sciences Division: U.S./European Workshop on Climate Change Challenges and Observations (open access)

Biological and Environmental Research: Climate and Environmental Sciences Division: U.S./European Workshop on Climate Change Challenges and Observations

The workshop aimed to identify outstanding climate change science questions and the observational strategies for addressing them. The scientific focus was clouds, aerosols, and precipitation, and the required ground- and aerial-based observations. The workshop findings will be useful input for setting priorities within the Department of Energy (DOE) and the participating European centers. This joint workshop was envisioned as the first step in enhancing the collaboration among these climate research activities needed to better serve the science community.
Date: November 8, 2012
Creator: Mather, James; McCord, Raymond; Sisterson, Doug & Voyles, Jimmy
Object Type: Report
System: The UNT Digital Library
Biorefinery and Carbon Cycling Research Project (open access)

Biorefinery and Carbon Cycling Research Project

In this project we focused on several aspects of technology development that advances the formation of an integrated biorefinery. These focus areas include: [ 1] pretreatment of biomass to enhance quality of products from thermochemical conversion; [2] characterization of and development of coproduct uses; [3] advancement in fermentation of lignocellulosics and particularly C5 and C6 sugars simultaneously, and [ 4] development of algal biomass as a potential substrate for the biorefinery. These advancements are intended to provide a diverse set of product choices within the biorefinery, thus improving the cost effectiveness of the system. Technical effectiveness was demonstrated in the thermochemical product quality in the form of lower tar production, simultaneous of use of multiple sugars in fermentation, use ofbiochar in environmental (ammonia adsorption) and agricultural applications, and production of algal biomass in wastewaters. Economic feasibility of algal biomass production systems seems attractive, relative to the other options. However, further optimization in all paths, and testing/demonstration at larger scales are required to fully understand the economic viabilities. The coproducts provide a clear picture that multiple streams of value can be generated within an integrated biorefinery, and these include fuels and products.
Date: June 8, 2012
Creator: Das, K. C., Adams; Thomas, T; Eiteman, Mark A; Kastner, James R; Mani, Sudhagar & Adolphson, Ryan
Object Type: Report
System: The UNT Digital Library
Brewster Angle Polarizing Beamsplitter Laser Damage Competition: "P" polarization (open access)

Brewster Angle Polarizing Beamsplitter Laser Damage Competition: "P" polarization

None
Date: November 8, 2012
Creator: Stolz, C. J. & Runkel, J.
Object Type: Article
System: The UNT Digital Library
Channel Modeling and Time Delay Estimation for Clock Synchronization Among Seaweb Nodes (open access)

Channel Modeling and Time Delay Estimation for Clock Synchronization Among Seaweb Nodes

From simulations, tracking of the impulse response is feasible. Potential to benefit other functions such as ranging between two nodes. Potential to combine the features of different protocols to create a new and more realistic clock-synchronization protocol.
Date: July 8, 2012
Creator: Gagnon, Pascal; Rice, Joseph A. & Clark, Grace A.
Object Type: Article
System: The UNT Digital Library
Cloud Condensation Nuclei Profile Value-Added Product (open access)

Cloud Condensation Nuclei Profile Value-Added Product

The cloud condensation nuclei (CCN) concentration at cloud base is the most relevant measure of the aerosol that influences droplet formation in clouds. Since the CCN concentration depends on supersaturation, a more general measure of the CCN concentration is the CCN spectrum (values at multiple supersaturations). The CCN spectrum is now measured at the surface at several fixed ARM sites and by the ARM Mobile Facility (AMF), but is not measured at the cloud base. Rather than rely on expensive aircraft measurements for all studies of aerosol effects on clouds, a way to project CCN measurements at the surface to cloud base is needed. Remote sensing of aerosol extinction provides information about the vertical profile of the aerosol, but cannot be directly related to the CCN concentration because the aerosol extinction is strongly influenced by humidification, particularly near cloud base. Ghan and Collins (2004) and Ghan et al. (2006) propose a method to remove the influence of humidification from the extinction profiles and tie the “dry extinction” retrieval to the surface CCN concentration, thus estimating the CCN profile. This methodology has been implemented as the CCN Profile (CCNPROF) value-added product (VAP).
Date: October 8, 2012
Creator: McFarlane, S; Sivaraman, C & Ghan, S
Object Type: Report
System: The UNT Digital Library
COLLABORATIVE RESEARCH: CONTINUOUS DYNAMIC GRID ADAPTATION IN A GLOBAL ATMOSPHERIC MODEL: APPLICATION AND REFINEMENT (open access)

COLLABORATIVE RESEARCH: CONTINUOUS DYNAMIC GRID ADAPTATION IN A GLOBAL ATMOSPHERIC MODEL: APPLICATION AND REFINEMENT

This project had goals of advancing the performance capabilities of the numerical general circulation model EULAG and using it to produce a fully operational atmospheric global climate model (AGCM) that can employ either static or dynamic grid stretching for targeted phenomena. The resulting AGCM combined EULAG's advanced dynamics core with the "physics" of the NCAR Community Atmospheric Model (CAM). Effort discussed below shows how we improved model performance and tested both EULAG and the coupled CAM-EULAG in several ways to demonstrate the grid stretching and ability to simulate very well a wide range of scales, that is, multi-scale capability. We leveraged our effort through interaction with an international EULAG community that has collectively developed new features and applications of EULAG, which we exploited for our own work summarized here. Overall, the work contributed to over 40 peer-reviewed publications and over 70 conference/workshop/seminar presentations, many of them invited. 3a. EULAG Advances EULAG is a non-hydrostatic, parallel computational model for all-scale geophysical flows. EULAG's name derives from its two computational options: EULerian (flux form) or semi-LAGrangian (advective form). The model combines nonoscillatory forward-in-time (NFT) numerical algorithms with a robust elliptic Krylov solver. A signature feature of EULAG is that it is formulated …
Date: May 8, 2012
Creator: Gutowski, William J.; Prusa, Joseph M. & Smolarkiewicz, Piotr K.
Object Type: Report
System: The UNT Digital Library
Compact, Interactive Electric Vehicle Charger (open access)

Compact, Interactive Electric Vehicle Charger

Advanced Research Projects Agency-Energy project sheet summarizing general information about the Agile Delivery of Electrical Power Technology (ADEPT) program including critical needs, innovation and advantages, impacts, and contact information. This sheet discusses a battery-to-grid energy distribution design as part of the "Gallium-Nitride Switch Technology for Bi-Directional Battery-to-Grid Charger Applications" project.
Date: May 8, 2012
Creator: HRL Laboratories, LLC
Object Type: Text
System: The UNT Digital Library
A Compact UV Timing Fiducial System for use with x-Ray Streak Cameras at NIF (open access)

A Compact UV Timing Fiducial System for use with x-Ray Streak Cameras at NIF

None
Date: August 8, 2012
Creator: Homoelle, D.; Bowers, M.; Browning, D.; Burns, S.; Golick, B.; Erbert, G. et al.
Object Type: Article
System: The UNT Digital Library
Comparison of ELM heat loads in snowflake and standard divertors (open access)

Comparison of ELM heat loads in snowflake and standard divertors

An analysis is given of the impact of the tokamak divertor magnetic structure on the temporal and spatial divertor heat flux from edge localized modes (ELMs). Two configurations are studied: the standard divertor where the poloidal magnetic field (B{sub p}) varies linearly with distance (r) from the magnetic null and the snowflake where B{sub p} varies quadratrically with r. Both one and two-dimensional models are used to analyze the effect of the longer magnetic field length between the midplane and the divertor plate for the snowflake that causes a temporal dilation of the ELM divertor heat flux. A second effect discussed is the appearance of a broad region near the null point where the poloidal plasma beta can substantially exceed unity, especially for the snowflake configuration during the ELM; such a condition is likely to drive additional radial ELM transport.
Date: May 8, 2012
Creator: Rognlien, T. D.; Cohen, R. H.; Ryutov, D. D. & Umansky, M. V.
Object Type: Article
System: The UNT Digital Library
Comparison of Gas Puff Imaging Data in NSTX with the DEGAS 2 Simulation (open access)

Comparison of Gas Puff Imaging Data in NSTX with the DEGAS 2 Simulation

Gas-Puff-Imaging (GPI) is a two dimensional diagnostic which measures the edge Dα light emission from a neutral D2 gas puff nears the outer mid-plane of NSTX. DEGAS 2 is a 3-D Monte Carlo code used to model neutral transport and atomic physics in tokamak plasmas. In this paper we compare measurements of the Dα light emission obtained by GPI on NSTX with DEGAS 2 simulations of Dα light emission for specific experiments. Both the simulated spatial distribution and absolute intensity of the Dα light emission agree well with the experimental data obtained between ELMs in H-mode. __________________________________________________
Date: November 8, 2012
Creator: Cao, B.; Stotler, D. P.; Zweben, S. J.; Bell, M.; Diallo, A. & Leblanc, B.
Object Type: Report
System: The UNT Digital Library
Computer experiments on the onset of turbulence (open access)

Computer experiments on the onset of turbulence

None
Date: August 8, 2012
Creator: Weisgraber, T H & Alder, B J
Object Type: Article
System: The UNT Digital Library
Controlled Hydrogen Fleet and Infrastructure Demonstration and Validation Project (open access)

Controlled Hydrogen Fleet and Infrastructure Demonstration and Validation Project

General Motors, LLC and energy partner Shell Hydrogen, LLC, deployed a system of hydrogen fuel cell electric vehicles integrated with a hydrogen fueling station infrastructure to operate under real world conditions as part of the U.S. Department of Energy's Controlled Hydrogen Fleet and Infrastructure Validation and Demonstration Project. This technical report documents the performance and describes the learnings from progressive generations of vehicle fuel cell system technology and multiple approaches to hydrogen generation and delivery for vehicle fueling.
Date: February 8, 2012
Creator: Stottler, Gary
Object Type: Report
System: The UNT Digital Library
Development of the bus joint for the ITER Central Solenoid (open access)

Development of the bus joint for the ITER Central Solenoid

None
Date: August 8, 2012
Creator: Martovetsky, N. N.; Irick, D. K. & Kenney, S. J.
Object Type: Article
System: The UNT Digital Library
DOE Basic Overview of Occupational Radiation Exposure (open access)

DOE Basic Overview of Occupational Radiation Exposure

This pamphlet focusses on two HSS activities that help ensure radiation exposures are accurately assessed and recorded, namely: 1) the quality and accuracy of occupational radiation exposure monitoring, and 2) the recording, reporting, analysis, and dissemination of the monitoring results. It is intended to provide a short summary of two specific HSS programs that aid in the oversight of radiation protection activities at DOE. The Department of Energy Laboratory Accreditation Program (DOELAP) is in place to ensure that radiation exposure monitoring at all DOE sites is precise and accurate, and conforms to national and international performance and quality assurance standards. The DOE Radiation Exposure Monitoring Systems (REMS) program provides for the collection, analysis, and dissemination of occupational radiation exposure information. The annual REMS report is a valuable tool for managing radiological safety programs and for developing policies to protect individuals from occupational exposure to radiation. In tandem, these programs provide DOE management and workers an assurance that occupational radiation exposures are accurately measured, analyzed, and reported.
Date: August 8, 2012
Creator: Oak Ridge Associated Universities
Object Type: Pamphlet
System: The UNT Digital Library
Dosimetric Quantities and Neutron Spectra Outside the Shielding of Electron Accelerators (open access)

Dosimetric Quantities and Neutron Spectra Outside the Shielding of Electron Accelerators

None
Date: October 8, 2012
Creator: Fasso, Alberto; Lab, /SLAC /Jefferson; Liu, James C.; Rokni, Sayed H & /SLAC
Object Type: Article
System: The UNT Digital Library
EVALUATION OF FABRIC MEMBRANES FOR USE IN SALTSTONE DRAIN WATER SYSTEM (open access)

EVALUATION OF FABRIC MEMBRANES FOR USE IN SALTSTONE DRAIN WATER SYSTEM

Saltstone Disposal Unit 2 contains a sheet drain fabric intended to separate solids from drain water to be returned to the Salt Feed Tank. A similar system installed in Vault 4 appears to be ineffective in keeping solids out of the drain water return lines. Waste Solidification Engineering is considering installation of an additional fabric membrane to supplement the existing sheet drain in SDU 2. Amerdrain 200 is the product currently installed in SDU 2. This product is no longer available, so Sitedrain 94 was used as the replacement product in this testing. Fabrics with apparent opening sizes of 10, 25, 50 and 100 microns were evaluated. These fabrics were evaluated under three separate test conditions, a water flow test, a solids retention test and a grout pour test. A flow test with water showed that installation of an additional filter layer will predictably reduce the theoretical flux through the sheet drain. The manufacturer reports the flux for Sitedrain 94 as 150 gpm/ft{sup 2} by ASTM D-4491. This compares reasonably well with the 117 gpm/ft{sup 2} obtained in this testing. A combination of the 10 micron fabric with Sitedrain 94 could be expected to decrease flux by about 10 times …
Date: March 8, 2012
Creator: Pickenheim, B.; Miller, D. & Burket, P.
Object Type: Report
System: The UNT Digital Library