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The CKM Matrix from Lattice QCD

Description: Lattice QCD plays an essential role in testing and determining the parameters of the CKM theory of flavor mixing and CP violation. Very high precisions are required for lattice calculations analyzing CKM data; I discuss the prospects for achieving them. Lattice calculations will also play a role in investigating flavor mixing and CP violation beyond the Standard Model.
Date: July 1, 2009
Creator: Mackenzie, Paul B.
Item Type: Refine your search to only Article
open access

Computational Fluid Dynamic Analysis of the VHTR Lower Plenum Standard Problem

Description: The United States Department of Energy is promoting the resurgence of nuclear power in the U. S. for both electrical power generation and production of process heat required for industrial processes such as the manufacture of hydrogen for use as a fuel in automobiles. The DOE project is called the next generation nuclear plant (NGNP) and is based on a Generation IV reactor concept called the very high temperature reactor (VHTR), which will use helium as the coolant at temperatures ranging from … more
Date: July 1, 2009
Creator: Johnson, Richard W. & Schultz, Richard R.
Item Type: Refine your search to only Report
open access

Computational Fluid Dynamics Analyses on Very High Temperature Reactor Air Ingress

Description: A preliminary computational fluid dynamics (CFD) analysis was performed to understand density-gradient-induced stratified flow in a Very High Temperature Reactor (VHTR) air-ingress accident. Various parameters were taken into consideration, including turbulence model, core temperature, initial air mole-fraction, and flow resistance in the core. The gas turbine modular helium reactor (GT-MHR) 600 MWt was selected as the reference reactor and it was simplified to be 2-D geometry in modeling. The … more
Date: July 1, 2009
Creator: Oh, Chang H; Kim, Eung S.; Schultz, Richard; Petti, David & Kang, Hyung S.
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open access

Congressional Member Organizations: Their Purpose and Activities, History, and Formation

Description: There are 645 informal (Congressional) Member organizations listed in the Congressional Yellow Book or registered with the Committee on House Administration. Of these 645 informal organizations, 256 are registered with the Committee on House Administration as a congressional Member organization (CMO). This report examines the purpose and activities of CMOs and the reasons Members form them. It also identifies and describes seven CMO types, and it provides an overview of the historical developme… more
Date: July 1, 2009
Creator: Dilger, Robert Jay
Item Type: Refine your search to only Report
open access

Contribution of Mobile Genetic Elements to Desulfovibrio Vulgaris Genome Plasticity

Description: The genome of Desulfovibrio vulgaris strain DePue, a sulfate-reducing Deltaproteobacterium isolated from heavy metal-impacted lake sediment, was completely sequenced and compared with the type strain D. vulgaris Hildenborough. The two genomes share a high degree of relatedness and synteny, but harbour distinct prophage and signatures of past phage contribution, the genome of strain DePue contains a cluster of open-reading frames not found in strain Hildenborough coding for the production and ex… more
Date: July 1, 2009
Creator: Walker, Christopher B.; Stolyar, Sergey; Chivian, Dylan; Pinel, Nicolas; Gabster, Jeffrey A.; Dehal, Paramvir S. et al.
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open access

Current MINOS Neutrino Oscillation Results

Description: The MINOS experiment is now making precise measurements of the {nu}{sub {mu}} disappearance oscillations seen in atmospheric neutrinos, tests possible disappearance to sterile {nu} by measuring the neutral current flux, and has extended our reach towards the so far unseen {theta}{sub 13} by looking for {nu}{sub e} appearance in the {nu}{sub {mu}} beam. It does so by using the intense, well-understood NuMI neutrino beam created at Fermilab and observing it 735km away at the Soudan Mine in Northe… more
Date: July 1, 2009
Creator: Habig, Alec & /Minnesota U., Duluth
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open access

Cyber Security and Resilient Systems

Description: The Department of Energy (DOE) Idaho National Laboratory (INL) has become a center of excellence for critical infrastructure protection, particularly in the field of cyber security. It is one of only a few national laboratories that have enhanced the nation’s cyber security posture by performing industrial control system (ICS) vendor assessments as well as user on-site assessments. Not only are vulnerabilities discovered, but described actions for enhancing security are suggested – both on a sy… more
Date: July 1, 2009
Creator: Anderson, Robert S.
Item Type: Refine your search to only Article
open access

Dark matter in view of recent experiments

Description: We discuss new models of dark matter (DM) developed recently in light of the anomalous signals from DAMA, INTEGRAL, AMS, PAMELA, ATIC and Fermi. If the results of any of the experiments are the result of DM interactions with ordinary matter, whether through scattering or annihilation, the DM must have properties atypical of an ordinary Weakly Interacting Massive Particle (WIMP) from the Minimal Supersymmetric Standard Model (MSSM). Many of these new models of DM developed to explain these signa… more
Date: July 1, 2009
Creator: Zurek, Kathryn M.
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open access

Deep borehole disposal of high-level radioactive waste.

Description: Preliminary evaluation of deep borehole disposal of high-level radioactive waste and spent nuclear fuel indicates the potential for excellent long-term safety performance at costs competitive with mined repositories. Significant fluid flow through basement rock is prevented, in part, by low permeabilities, poorly connected transport pathways, and overburden self-sealing. Deep fluids also resist vertical movement because they are density stratified. Thermal hydrologic calculations estimate the t… more
Date: July 1, 2009
Creator: Stein, Joshua S.; Freeze, Geoffrey A.; Brady, Patrick Vane; Swift, Peter N.; Rechard, Robert Paul; Arnold, Bill Walter et al.
Item Type: Refine your search to only Report
open access

Deposition Velocities of Non-Newtonian Slurries in Pipelines: Complex Simulant Testing

Description: One of the concerns expressed by the External Flowsheet Review Team (EFRT) is about the potential for pipe plugging at the Waste Treatment and Immobilization Plant (WTP). Per the review’s executive summary, “Piping that transports slurries will plug unless it is properly designed to minimize this risk. This design approach has not been followed consistently, which will lead to frequent shutdowns due to line plugging.” To evaluate the potential for plugging, deposition-velocity tests were perfor… more
Date: July 1, 2009
Creator: Poloski, Adam P.; Bonebrake, Michael L.; Casella, Andrew M.; Johnson, Michael D.; Toth, James J.; Adkins, Harold E. et al.
Item Type: Refine your search to only Report
open access

DESIGN INFORMATION VERIFICATION FOR NUCLEAR SAFEGUARDS

Description: A critical aspect of international safeguards activities performed by the International Atomic Energy Agency (IAEA) is the verification that facility design and construction (including upgrades and modifications) do not create opportunities for nuclear proliferation. These Design Information Verification activities require that IAEA inspectors compare current and past information about the facility to verify the operator’s declaration of proper use. The actual practice of DIV presents challenge… more
Date: July 1, 2009
Creator: Bean, Robert S.; Metcalf, Richard R. M. & Durst, Phillip C.
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open access

DETERMINATION OF RELATIVE IMPORTANCE OF NONPROLIFERATION FACTORS

Description: Methodologies to determine the proliferation resistance (PR) of nuclear facilities often rely on either expert elicitation, a resource-intensive approach without easily reproducible results, or numeric evaluations, which can fail to take into account the institutional knowledge and expert experience of the nonproliferation community. In an attempt to bridge the gap and bring the institutional knowledge into numeric evaluations of PR, a survey was conducted of 33 individuals to find the relative… more
Date: July 1, 2009
Creator: Metcalf, Richard
Item Type: Refine your search to only Article
open access

DEVELOPMENT AND VALIDATION OF A MULTIFIELD MODEL OF CHURN-TURBULENT GAS/LIQUID FLOWS

Description: The accuracy of numerical predictions for gas/liquid two-phase flows using Computational Multiphase Fluid Dynamics (CMFD) methods strongly depends on the formulation of models governing the interaction between the continuous liquid field and bubbles of different sizes. The purpose of this paper is to develop, test and validate a multifield model of adiabatic gas/liquid flows at intermediate gas concentrations (e.g., churn-turbulent flow regime), in which multiple-size bubbles are divided into a… more
Date: July 1, 2009
Creator: Tselishcheva, Elena A.; Antal, Steven P.; Podowski, Michael Z. & Guillen, Donna Post
Item Type: Refine your search to only Article
open access

The Discrete Equation Method (DEM) for Fully Compressible Two-Phase Flows in Ducts of Spatially Varying Cross-Section

Description: Typically, multiphase modeling begins with an averaged (or homogenized) system of partial differential equations (traditionally ill-posed) then discretizes this system to form a numerical scheme. Assuming that the ill-posedness problem is avoided by using a well-posed formulation such as the seven-equation model, this presents problems for the numerical approximation of non-conservative terms at discontinuities (interfaces, shocks) as well as unwieldy treatment of fluxes with seven waves. To so… more
Date: July 1, 2009
Creator: Berry, Ray A.; Saurel, Richard & Grimmett, Tamara
Item Type: Refine your search to only Article
open access

Effect of Key Parameters on the Photocatalytic Oxidation of Toluene at Low Concentrations in Air under 254 + 185 nm UV Irradiation

Description: The effect of key experimental parameters on the removal of toluene under 254 + 185 nm irradiation was investigated using a benchtop photocatalytic flow reactor. Toluenewas introduced at low concentrations between 10 and 500 ppbv, typical of indoorenvironments, and reacted on TiO2-coated Raschig rings. Two different TiO2-coated rings were prepared: in one case, by dip-coating using a P25 aqueous suspension and, on the other, using an organic/inorganic sol-gel method that produced thin films of … more
Date: July 1, 2009
Creator: Quici, Natalia; Vera, Maria L.; Choi, Hyeok; Puma, Gianluca Li; Dionysiou, Dionysios D.; Litter, Marta I. et al.
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Electric Power Delivery Testing Feasibility Study Task 6 Final Report

Description: This Final Report is covers the completion of the Electric Power Delivery Testing Feasibility Study. The objective of this project was to research, engineer, and demonstrate high-power laboratory testing protocols to accurately reproduce the conditions on the electric power grid representing both normal load switching and abnormalities such as short-circuit fault protection. Test circuits, equipment, and techniques were developed and proven at reduced power levels to determine the feasibility o… more
Date: July 1, 2009
Creator: Tobin, Thomas
Item Type: Refine your search to only Report
open access

electronic Ligand Builder and Optimisation Workbench (eLBOW): A tool for ligand coordinate and restraint generation

Description: The electronic Ligand Builder and Optimisation Workbench (eLBOW) is a program module of the PHENIX suite of computational crystallographic software. It's designed to be a flexible procedure using simple and fast quantum chemical techniques to provide chemically accurate information for novel and known ligands alike. A variety of input formats and options allow for the attainment of a number of diverse goals including geometry optimisation and generation of restraints.
Date: July 1, 2009
Creator: Moriarty, Nigel; Grosse-Kunstleve, Ralf & Adams, Paul
Item Type: Refine your search to only Article
open access

ELIMINATING CONSERVATISM IN THE PIPING SYSTEM ANALYSIS PROCESS THROUGH APPLICATION OF A SUITE OF LOCALLY APPROPRIATE SEISMIC INPUT MOTIONS

Description: Seismic analysis is of great importance in the evaluation of nuclear systems due to the heavy influence such loading has on their designs. Current Department of Energy seismic analysis techniques for a nuclear safety-related piping system typically involve application of a single conservative seismic input applied to the entire system [1]. A significant portion of this conservatism comes from the need to address the overlapping uncertainties in the seismic input and in the building response tha… more
Date: July 1, 2009
Creator: Crawford, Anthony L.; Spears, Robert E. & Russell, Mark J.
Item Type: Refine your search to only Article
open access

Enabling International Safeguards Research and Development in the United States

Description: Idaho National Laboratory (INL) is the lead laboratory in nuclear energy research and development within the U.S. Department of Energy national laboratory complex. INL is tasked with the advancement of nuclear energy research and development, and leadership in the renaissance of nuclear power globally. INL scientists have been central to the assessment of needs and the integration of technical programs aimed at the world-wide growth of nuclear power. One of the grand challenges of the nuclear e… more
Date: July 1, 2009
Creator: Dwight, John E.; Schanfein, Mark J. & Bjornard, Trond A.
Item Type: Refine your search to only Article
open access

Energy Savings Certificate Markets: Opportunities and Implementation Barriers

Description: Early experiences with energy savings certificates (ESCs) have revealed their merits and the challenges associated with them. While in the United States ESC markets have yet to gain significant traction, lessons can be drawn from early experiences in the states of Connecticut and New York, as well as from established markets in Italy, France, and elsewhere. The staying power of European examples demonstrates that ESCs can help initiate more efficiency projects. This article compares ESCs with r… more
Date: July 1, 2009
Creator: Friedman, B.; Bird, L. & Barbose, G.
Item Type: Refine your search to only Article
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