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Radiation environment resulting from Main Injector beam extraction to the NuMI beam line

Description: A 120 GeV Main Injector proton beam will be delivered to the NuMI beam line at Fermilab at the rate of 3.7x 10{sup 20} per year. Realistic Monte Carlo simulations have been performed to examine the radiation environment in the beam extraction system and NuMI beam line elements. A complete 3-D model of the 160 meter extraction region has been implemented utilizing the computer code MARS. The model includes a description of the field of the electrostatic septa and POISSON calculated field maps of… more
Date: April 29, 1999
Creator: A.I. Drozhdin, P.W. Lucas, N.V. Mokhov, C.D. Moore and S.I. Striganov
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

ENSO Simulation in Coupled Ocean-Atmosphere Models: Are the Current Models Better?

Description: Maintaining a multi-model database over a generation or more of model development provides an important framework for assessing model improvement. Using control integrations, we compare the simulation of the El Nino/Southern Oscillation (ENSO), and its extratropical impact, in models developed for the 2007 Intergovernmental Panel on Climate Change (IPCC) Fourth Assessment Report with models developed in the late 1990's (the so-called Coupled Model Intercomparison Project-2 [CMIP2] models). The … more
Date: April 29, 2005
Creator: AchutaRao, K. & Sperber, K. R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Development of improved TRISO-P fuel particle P-PyC coating

Description: Low defect fuels are required for the MHTGR to meet tighter fuel performance for this reactor design (Ref. 1). Exposed heavy metal (HM) contamination levels must be reduced to {le} 1E-5 fraction. Particle coating breakage during the fuel compact fabrication process has been shown to be a major source of HM contamination in the final fuel compacts. Excessive forces are experienced by the coated fuel particles during matrix injection, which leads to coating failure. Adding a sacrificial, low Youn… more
Date: April 29, 1988
Creator: Adams, C.C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Incident Energy Dependence of pt Correlations at RHIC

Description: We present results for two-particle transverse momentum correlations, ({Delta}p{sub t,i}{Delta}p{sub t,j}), as a function of event centrality for Au+Au collisions at {radical}s{sub NN} = 20, 62, 130, and 200 GeV at the Relativistic Heavy Ion Collider. We observe correlations decreasing with centrality that are similar at all four incident energies. The correlations multiplied by the multiplicity density increase with incident energy and the centrality dependence may show evidence of processes s… more
Date: April 29, 2005
Creator: Adams, J.; Aggarwal, M. M.; Ahammed, Z.; Amonett, J.; Anderson, B. D.; Arkhipkin, D. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

U.S. International Investment Agreements: Issues for Congress

Description: This report provides an overview of U.S. international investment agreements, focusing specifically on bilateral investment treaties (BITs) and investment chapters in free trade agreements (FTAs). It discusses key trends in U.S. and international investment flows, governance structures for investment at the bilateral and multilateral levels, the goals and basic components of investment provisions in U.S. international investment agreements, the outcomes of the Administration's Model BIT review,… more
Date: April 29, 2013
Creator: Akhtar, Shayerah Ilias & Weiss, Martin A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Investigation of passive cooling for hot-humid climates. Progress report No. 3

Description: Work on getting the Brookhaven National Laboratories computer program for modeling ground coil performance operational is described. Arrangements made to sink two 40 ft vertical wells for soil temperature measurements are described. Methods for evaluating the effect of pipe diameter, length, spacing, and material were investigated. Calculation results are shown. (MHR)
Date: April 29, 1980
Creator: Akridge, J M
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Broadly Turnable Pump-Resonant Diode-Pumped CW PPLN OPO

Description: We have observed low threshold operation of a broadly tunable (2.18-3.4 µm) pump-resonant cw periodically poled lithium niobate (PPLN) optical parametric oscillator (OPO). When pumped at 806 nm with 410 mW from a custom-built diode laser the OPO generated 20 mW of idler output at 3.3 µm.
Date: April 29, 1999
Creator: Alford, W.J.; Bowers, Mark S.; Raymond, T.D. & Seamans, J.F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Advanced three-dimensional thermal modeling of a baseline spent fuel repository

Description: A three-dimensional thermal analysis using finite difference techniques was performed to determine the near-field response of a baseline spent fuel repository in a deep geologic salt medium. A baseline design incorporates previous thermal modeling experience and OWI recommendations for areal thermal loading in specifying the waste form properties, package details, and emplacement configuration. The base case in this thermal analysis considers one 10-year old PWR spent fuel assembly emplaced to … more
Date: April 29, 1980
Creator: Altenbach, T.J. & Lowry, W.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Exact matched-beam envelopes for undepressed transport in a quadrupole lattice with unequal drift lengths and arbitrary field strength

Description: In 1958, Courant and Snyder analyzed the problem of alternating-gradient beam transport and treated a model without focusing gaps or space charge. Recently we revisited their work and found the exactsolution for matched-beam envelopes in a linear quadrupole lattice [O.A. Anderson and L.L. LoDestro, Phys. Rev. ST Accel. Beams, 2009]. We extend that work here to include the effect of gaps. We derive the exact envelopes and show results for various field strengths, occupancies eta,and gap-length r… more
Date: April 29, 2009
Creator: Anderson, O. A. & LoDestro, L. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Analytic Solution of the Envelope Equations for an Undepressed Matched Beam in a FODO Quadrupole Channel

Description: In 1958, Courant and Snyder analyzed the problem of alternating-gradient beam transport and treated a model without focusing gaps or space charge. Recently we revisited their work and found the exact solution for matchedbeam envelopes in a linear quadrupole lattice [O.A. Anderson and L.L. LoDestro, Phys. Rev. ST Accel. Beams, 2009]. We extend that work here to include the effect of asymmetric drift spaces. We derive the solution and show exact envelopes for the first two solution bands and the … more
Date: April 29, 2009
Creator: Anderson, Oscar & LoDestro, L. L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Particle Distribution From a Unit Source - Part A

Description: Thus we see that the derivation of elementary age theory is based on replacing the probability of collision governed by the Milne kernel by a Gaussian probability having the same zeroth and second moments. It is apparent that the age theory distribution will fail close to the source and at many free paths from the source.
Date: April 29, 1955
Creator: Anthony, G. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Kalman filter analysis of delayed neutron nondestructive assay measurements.

Description: The ability to nondestructively determine the presence and quantity of fissile and fertile nuclei in various matrices is important in several nuclear applications including international and domestics safeguards, radioactive waste characterization and nuclear facility operations. Material irradiation followed by delayed neutron counting is a well known and useful nondestructive assay technique used to determine the fissile-effective content of assay samples. Previous studies have demonstrated t… more
Date: April 29, 1998
Creator: Aumeier, S. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department

Elicitation of words with closed long syllables

Description: Recording of an elicitation of words with closed long syllables (CVVC) in different positions. The purpose is to determine the relative weight of closed long syllables for primary word stress placement. The contributor is Gohar-Ur Rehman (a 38-year old male shop owner).
Date: April 29, 2021
Duration: 1 minute 46 seconds
Creator: Aurangzeb
Item Type: Refine your search to only Sound
Partner: UNT College of Information
open access

Overview of the geothermal energy development program at the Lawrence Livermore Laboratory

Description: The program consists generally of development of advanced conversion systems, with strong emphasis on a systems approach to find solutions of the problems of scale formation, corrosion/erosion of materials, spent brine disposal and solids handling, and development of reliable, efficient energy conversion systems with strong emphasis on development of the total flow concept. The status of the various parts of this program is reviewed briefly. (MHR)
Date: April 29, 1977
Creator: Austin, A. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Trends in Discretionary Spending

Description: This report discusses recent trends in discretionary spending. Topics examined include fiscal policy in the wake of the recession, discretionary spending limits reimposed in 2011, the FY2013 sequestration, long term trends, and security spending.
Date: April 29, 2013
Creator: Austin, D. Andrew
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Does Price Transparency Improve Market Efficiency? Implications of Empirical Evidence in Other Markets for the Health Sector

Description: This report reviews the empirical studies of the effect of changes in price transparency on prices and quality of goods in a variety of industries; addresses the extent to which this evidence might be applicable to the health care market and certain special characteristics of the health care market which may reduce the importance of prices as signals; examines how prices are actually set by hospitals and the evidence that exists on price dispersion both across hospitals and across patient categ… more
Date: April 29, 2008
Creator: Austin, D. Andrew & Gravelle, Jane G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Productivity and Injectivity of Horizontal Wells

Description: A general wellbore flow model is presented to incorporate not only frictional, accelerational and gravitational pressure drops, but also the pressure drop caused by inflow. Influence of inflow or outflow on the wellbore pressure drop is analyzed. New friction factor correlations accounting for both inflow and outflow are also developed. The greatest source of uncertainty is reservoir description and how it is used in simulators. Integration of data through geostatistical techniques leads to mul… more
Date: April 29, 1997
Creator: Aziz, Khalid; Arababi, Sepehr & Hewett, Thomas A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

MALDI-MS Imaging of Urushiols in Poison Ivy Stem

Description: This article reports on the first analysis of urushiols in poison ivy stems by matrix-assisted laser desorption/ionization-mass spectrometry imaging (MALDI-MSI).
Date: April 29, 2017
Creator: Aziz, Mina; Sturtevant, Drew; Winston, Jordan; Collakova, Eva; Jelesko, John G. & Chapman, Kent D.
Item Type: Refine your search to only Article
Partner: UNT College of Arts and Sciences
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