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Synthesis of 6-acrylamido-4-(2-[18F]fluoroanilino)quinazoline: Aprospective irreversible EGFR binding probe

Description: Acrylamido-quinazolines substituted at the 6-position bindirreversibly to the intracellular ATP binding domain of the epidermalgrowth factor receptor (EGFR). A general route was developed forpreparing 6-substituted-4-anilinoquinazolines from [18F]fluoroanilinesfor evaluation as EGFR targeting agents with PET. By a cyclizationreaction, 2-[18F]fluoroaniline was reacted withN'-(2-cyano-4-nitrophenyl)-N,N-dimethylimidoformamide to produce6-nitro-4-(2-[18F]fluoroanilino)quinazoline in 27.5 percentde… more
Date: March 30, 2004
Creator: Vasdev, Neil; Dorff, Peter N.; Gibbs, Andrew R.; Nandanan,Erathodiyil; Reid, Leanne M.; O'Neil, James P. et al.
Partner: UNT Libraries Government Documents Department
open access

Effective Operators in the NCSM Formalism

Description: No-core shell model (NCSM) calculations using ab initio effective interactions are very successful in reproducing the experimental nuclear spectra. While a great deal of work has been directed toward computing effective interactions from bare nucleon-nucleon (NN) and three-nucleon forces, less progress has been made in calculating the effective operators. Thus, except for the relative kinetic energy, the proton radius, and the NN pair density, all investigations have used bare operators. We app… more
Date: November 30, 2004
Creator: Stetcu, I; Barrett, B R; Navratil, P & Vary, J P
Partner: UNT Libraries Government Documents Department
open access

Fabrication of Mo/Cu Multilayer and Bilayer Transition Edge Sensors

Description: We are developing cryogenic high-resolution x-ray, {gamma}-ray and neutron spectrometers based on superconducting Mo/Cu transition edge sensors. Here we discuss the sensor design for different applications, present the photolithographic fabrication techniques, and outline future detector development to increase spectrometer sensitivity.
Date: September 30, 2004
Creator: Ali, Z. A.; Drury, O. B.; Cunningham, M. F.; Chesser, J. M.; Barbee, T. W., Jr. & Friedrich, S.
Partner: UNT Libraries Government Documents Department
open access

Comparison of Ramsauer and Optical Model Neutron Angular Distributions

Description: The nuclear Ramsauer model is a semi-classical, analytic approximation to nucleon-nucleus scattering that reproduces total cross section data at the 1% level for A > 40, E{sub n} = 5-60 MeV with 7-10 parameters. A quick overview of the model is given, demonstrating the model's utility in nuclear data evaluation. The Ramsauer model predictions for reaction cross section, elastic cross section, and elastic scattering angular distributions are considered. In a recent paper it has been shown tha… more
Date: September 30, 2004
Creator: McNabb, D. P.; Anderson, J. D.; Bauer, R. W.; Dietrich, F. S.; Grimes, S. M. & Hagmann, C. A.
Partner: UNT Libraries Government Documents Department
open access

Ab Initio No-Core Shell Model Calculations Using Realistic Two- and Three-Body Interactions

Description: There has been significant progress in the ab initio approaches to the structure of light nuclei. One such method is the ab initio no-core shell model (NCSM). Starting from realistic two- and three-nucleon interactions this method can predict low-lying levels in p-shell nuclei. In this contribution, we present a brief overview of the NCSM with examples of recent applications. We highlight our study of the parity inversion in {sup 11}Be, for which calculations were performed in basis spaces up t… more
Date: November 30, 2004
Creator: Navratil, P; Ormand, W E; Forssen, C & Caurier, E
Partner: UNT Libraries Government Documents Department
open access

Turbulence Kinetic Energy in the Oklahoma City Urban Environment

Description: The Joint URBAN 2003 field experiment took place in Oklahoma City, Oklahoma, during July 2003 to explore the effect of an urban canopy on the transport and diffusion of a passive tracer released in an urban area. Over one hundred three-dimensional sonic anemometers were deployed in and around the urban area to monitor wind speed, direction, and turbulence during releases of SF6. Deployment locations include a profile of eight sonic anemometers mounted on a crane located 1 km north (typically do… more
Date: March 30, 2004
Creator: Lundquist, J K; Leach, M & Gouveia, F
Partner: UNT Libraries Government Documents Department
open access

Productivity benefits of industrial energy efficiency measures

Description: We review the relationship between energy efficiency improvement measures and productivity in industry. We review over 70 industrial case studies from widely available published databases, followed by an analysis of the representation of productivity benefits in energy modeling. We propose a method to include productivity benefits in the economic assessment of the potential for energy efficiency improvement. The case-study review suggests that energy efficiency investments can provide a signifi… more
Date: August 30, 2004
Creator: Worrell, Ernst; Laitner, John A.; Michael, Ruth & Finman, Hodayah
Partner: UNT Libraries Government Documents Department
open access

NIC-based Reduction Algorithms for Large-scale Clusters

Description: Efficient algorithms for reduction operations across a group of processes are crucial for good performance in many large-scale, parallel scientific applications. While previous algorithms limit processing to the host CPU, we utilize the programmable processors and local memory available on modern cluster network interface cards (NICs) to explore a new dimension in the design of reduction algorithms. In this paper, we present the benefits and challenges, design issues and solutions, analytical m… more
Date: July 30, 2004
Creator: Petrini, F.; Moody, A. T.; Fernandez, J.; Frachtenberg, E. & Panda, D. K.
Partner: UNT Libraries Government Documents Department
open access

Zirconium and Niobium Transmission Data at Wavelengths from 11-16 nm and 200-1200 nm

Description: Transmission measurements of niobium and zirconium at both extreme-ultraviolet (EUV) and ultraviolet, visible, and near infrared (UV/Vis/NIR) wavelengths are presented. Thin foils of various thicknesses mounted on nickel mesh substrates were measured, and these data were used to calculate the optical constants {delta} and {beta} of the complex refractive index n = 1- {delta} +i{beta}. {beta} values were calculated directly from the measured transmittance of the foils after normalizing for the n… more
Date: August 30, 2004
Creator: Johnson, T; Soufli, R; Gulikson, E & Clift, M
Partner: UNT Libraries Government Documents Department
open access

Reconciling data using Markov Chain Monte Carlo: An application to the Yellow Sea - Korean Peninsula region

Description: In an effort to build seismic models that are most consistent with multiple data sets, we have applied a new probabilistic inverse technique. This method uses a Markov Chain Monte Carlo (MCMC) algorithm to sample models from a prior distribution and test them against multiple data types to generate a posterior distribution. While computationally expensive, this approach has several advantages over a single deterministic model, notably the reconciliation of different data types that constrain th… more
Date: August 30, 2004
Creator: Pasyanos, M E; Franz, G A & Ramirez, A L
Partner: UNT Libraries Government Documents Department
open access

Unlocking the potential for efficiency and demand response throughadvanced metering

Description: Reliance on the standard cumulative kilowatt-hour meter substantially compromises energy efficiency and demand response programs. Without advanced metering, utilities cannot support time-differentiated rates or collect the detailed customer usage information necessary to (1)educate the customer to the economic value of efficiency and demand response options, or (2) distribute load management incentives proportional to customer contribution. These deficiencies prevent the customer feedback mecha… more
Date: June 30, 2004
Creator: Levy, Roger; Herter, Karen & Wilson, John
Partner: UNT Libraries Government Documents Department
open access

Extracting growth rates from the non-laminated coralline sponge Astrosclera willeyana using "bomb" radiocarbon

Description: Coralline sponges have the potential to fill in gaps in our understanding of subsurface oceanographic variability. However, one disadvantage they have compared to hermatypic reef building coral proxies is that they do not have annual density bands and need to be radiometrically dated for an age determination. To elucidate growth rate variability we have measured radiocarbon in 1 mm increments from Astrosclera willeyana sponges collected off the Central and Northern Great Barrier Reef (GBR) and … more
Date: June 30, 2004
Creator: Fallon, S & Guilderson, T
Partner: UNT Libraries Government Documents Department
open access

Radiological Survey Tool Set for ArcGIS 8.3 and ArcPad 6.0

Description: The Radiological Control Operations (RCO) group at the Savannah River Site (SRS) is tasked with conducting routine surveys for the detection of radiological contaminants in the environment. The Radiological Survey Tool Set (RSTS) was developed by the Environmental & Geographic Information Systems (EGIS) group of SRS to assist RCO personnel in this survey process. The tool set consists of two major components. The first component is a custom extension for ArcGIS 8.3 that allows the user to inter… more
Date: November 30, 2004
Creator: ROGER, COTTRELL
Partner: UNT Libraries Government Documents Department
open access

The Electron-Phonon Interaction as Studied by Photoelectron Spectroscopy

Description: With recent advances in energy and angle resolution, the effects of electron-phonon interactions are manifest in many valence-band photoelectron spectra (PES) for states near the Fermi level in metals.
Date: September 30, 2004
Creator: Lynch, D. W.
Partner: UNT Libraries Government Documents Department
open access

Detailed structural characterization of the grafting of [Ta(=CHtBu)(CH2tBu)3] and [Cp*TaMe4] on silica partially dehydroxylated at 700 C and the activity of the grafted complexes toward alkane metathesis

Description: The reaction of [Ta({double_bond}CHtBu)(CH{sub 2}tBu){sub 3}] or [Cp*Ta(CH{sub 3}){sub 4}] with a silica partially dehydroxylated at 700 C gives the corresponding monosiloxy surface complexes [({triple_bond}SiO)Ta({double_bond}CHtBu)(CH{sub 2}tBu){sub 2}] and [({triple_bond}SiO)Ta(CH{sub 3}){sub 3}Cp*] by eliminating a {sigma}-bonded ligand as the corresponding alkane (H-CH{sub 2}tBu or H-CH{sub 3}). EXAFS data show that an adjacent siloxane bridge of the surface plays the role of an extra surf… more
Date: August 30, 2004
Creator: Le Roux, Erwan; Chabanas, Mathieu; Baudouin, Anne; de Mallmann, Aimery; Coperet, Christophe; Quadrelli, E. Allesandra et al.
Partner: UNT Libraries Government Documents Department
open access

Summary of the ECLOUD'04 Workshop

Description: The 31st ICFA Advanced Beam Dynamics Workshop on Electron-Cloud Effects ''ECLOUD'04'' was held April 19-23, 2004 at Napa, CA, USA. A broad range of current topics in this field were illuminated by 53 talks in 7 sessions plus 6 session summaries at the final summary session. These covered a variety of experimental methods and results, along with progress on understanding of the topic obtained from simulations and analytic theory, and evaluations of the effectiveness of various methods/mechanisms… more
Date: November 30, 2004
Creator: Macek, R. & Furman, M.
Partner: UNT Libraries Government Documents Department
open access

Atomistic simulations of fcc Pt{sub 75}Ni{sub 25} and Pt{sub 75}Re{sub 25} cubo-octahedral nanoparticles

Description: We have developed interatomic potentials for Pt-Ni and Pt-Re alloys within the modified embedded atom method (MEAM). Furthermore, we applied these potentials to study the equilibrium structures of Pt75Ni25 and Pt75Re25 nanoparticles at T=600 K using the Monte Carlo method. In this work, the nanoparticles are assumed to have disordered fcc cubo-octahedral shapes (terminated by {l_brace}111{r_brace} and {l_brace}100{r_brace} facets) and contain from 586 to 4033 atoms (corresponding to a diameter … more
Date: March 30, 2004
Creator: Wang, Guofeng; Van Hove, M.A.; Ross, P.N. & Baskes, M.I.
Partner: UNT Libraries Government Documents Department
open access

Direct evidence of the fermi-energy-dependent formation of Mn interstitials in modulation doped Ga1-yAlyAs/Ga1-xMnxAs/Ga1-yAlyAs heterostructures

Description: Using ion channeling techniques, we investigate the lattice locations of Mn in Ga{sub 1-x}Mn{sub x}As quantum wells between Be-doped Ga{sub 1-y}Al{sub y}As barriers. The earlier results showed that the Curie temperature T{sub C} depends on the growth sequence of the epitaxial layers. A lower T{sub C} was found in heterostructures in which the Ga{sub 1-x}Mn{sub x}As layer is grown after the modulation-doped barrier. Here we provide direct evidence that this reduction in T{sub C} is directly corr… more
Date: January 30, 2004
Creator: Yu, K.M.; Walukiewicz, W.; Wojtowicz, T.; Lim, W.L.; Liu, X.; Dobrowolska, M. et al.
Partner: UNT Libraries Government Documents Department
open access

Stress-dependent permeability of fractured rock masses: A numerical study

Description: We investigate the stress-dependent permeability issue in fractured rock masses considering the effects of nonlinear normal deformation and shear dilation of fractures using a two-dimensional distinct element method program, UDEC, based on a realistic discrete fracture network realization. A series of ''numerical'' experiments were conducted to calculate changes in the permeability of simulated fractured rock masses under various loading conditions. Numerical experiments were conducted in two w… more
Date: April 30, 2004
Creator: Min, Ki-Bok; Rutqvist, J.; Tsang, Chin-Fu & Jing, Lanru
Partner: UNT Libraries Government Documents Department
open access

Top quark physics at CDF

Description: The existence of the top quark, discovered by CDF and D0 in 1995, has been re-established in the burgeoning dataset being collected in Run 2 of the Tevatron at Fermilab. Results from CDF on the top quark production cross section and top quark mass are consistent with the Standard Model expectations. The well-characterized top data samples will make it possible in the future to probe further for new physics in the top quark sector. This report summarizes recent CDF top quark physics results.
Date: April 30, 2004
Creator: Nielsen, Jason
Partner: UNT Libraries Government Documents Department
open access

Extractor Configurations for a Heavy Ion Fusion Volume Source

Description: In order for volume sources to deliver the current (e.g., 0.8 A of Ar{sup +} per module) and brightness necessary for heavy ion fusion (HIF), they must operate at high current density. Conventional extractor designs for 1 to 2 MeV run into voltage breakdown limitations and cannot easily produce the required current rise time (about one microsecond). We discuss two systems that can overcome these volume-extraction problems. Each uses multichannel preaccelerators followed by a single channel main… more
Date: August 30, 2004
Creator: Anderson, O. A.
Partner: UNT Libraries Government Documents Department
open access

Novel Processing of mo-si-b Intermetallics for improved efficiency of power systems

Description: Multiphase composite alloys based on the Mo-Si-B system are candidate materials for ultra-high temperature applications. In non load-bearing applications such as thermal barrier coatings or heat exchangers in fossil fuel burners, these materials may be ideally suited. Alloys based on the Mo{sub 5}Si{sub 3}B{sub x} phase (Tl phase) possess excellent oxidation resistance to at least 1600 C in synthetic air atmospheres. However, the ability of Tl-based alloys to resist aggressive combustion enviro… more
Date: September 30, 2004
Creator: Kramer, M. J.; Degirmen, O.; Thom, A. J. & Akinc, M.
Partner: UNT Libraries Government Documents Department
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