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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

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

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

First principle thousand atom quantum dot calculations

Description: A charge patching method and an idealized surface passivation are used to calculate the single electronic states of IV-IV, III-V, II-VI semiconductor quantum dots up to a thousand atoms. This approach scales linearly and has a 1000 fold speed-up compared to direct first principle methods with a cost of eigen energy error of about 20 meV. The calculated quantum dot band gaps are parametrized for future references.
Date: March 30, 2004
Creator: Wang, Lin-Wang & Li, Jingbo
Partner: UNT Libraries Government Documents Department
open access

Identifying the sources of subsurface contamination at the Hanford site in Washington using high-precision uranium isotopic measurements

Description: In the mid-1990s, a groundwater plume of uranium (U) was detected in monitoring wells in the B-BX-BY Waste Management Area (WMA) at the Hanford Site in Washington. This area has been used since the late 1940s to store high-level radioactive waste and other products of U fuel-rod processing. Using multiple collector ICP source magnetic sector mass spectrometry (MC ICPMS) high precision uranium isotopic analyses were conducted of samples of vadose zone contamination and of groundwater. The ratios… more
Date: March 30, 2004
Creator: Christensen, John N.; Dresel, P. Evan; Conrad, Mark E.; Maher, Kate & DePaolo, Donald J.
Partner: UNT Libraries Government Documents Department
open access

RESORCINOL-FORMALDEHYDE ADSORPTION OF CESIUM (Cs+) FROM HANFORD WASTE SOLUTIONS-PART I: BATCH EQUILIBRIUM STUDY

Description: Batch equilibrium measurements were conducted with a granular Resorcinol-Formaldehyde (RF) resin to determine the distribution coefficients (Kds) for cesium. In the tests, Hanford Site actual waste sample containing radioactive cesium and a pretreated waste sample that was spiked with non-radioactive cesium were used. Initial concentrations of non-radioactive cesium in the waste sample were varied to generate an equilibrium isotherm for cesium. Two additional tests were conducted using a liquid… more
Date: March 30, 2004
Creator: Hassan, Neguibm
Partner: UNT Libraries Government Documents Department
open access

Effects of stacking faults on the electronic structures of quantum rods

Description: Atomistic semiempirical pseudopotential method is used to study the effects of stacking faults in a wurtzite structure quantum rod. It is found that a single stacking fault can cause a 10-50 meV change in the conduction state eigen energy, and a localization in the electron wave function. However, the effects on the hole eigen energies and wave functions are very small.
Date: March 30, 2004
Creator: Wang, Lin-Wang
Partner: UNT Libraries Government Documents Department
open access

Review of the Thermodynamic Properties of Mg(NO3)2(ap), and Their Representation with the Standard and Extended Ion-Interaction (Pitzer) Models at 298.15 K

Description: Published thermodynamic data yielding the osmotic coefficients, relative apparent molar enthalpies, and apparent molar heat capacities of Mg(NO{sub 3}){sub 2}(aq) have been collected, recalculated consistently, and critically assessed. The more reliable of these data have been used to evaluate the parameters of the standard three-parameter form of Pitzer's ion-interaction model to higher molalities than previously available, along with the parameters of Archer's four-parameter, extended ion-int… more
Date: March 30, 2004
Creator: Rard, J A; Wijesinghe, A M & Wolery, T J
Partner: UNT Libraries Government Documents Department
open access

THE RELATIVISTIC HEAVY ION COLLIDER (RHIC) REFRIGERATOR SYSTEM AT BROOKHAVEN NATIONAL LABORATORY: SYSTEM PERFORMANCE AND OPERATIONS UPGRADES FOR 2003.

Description: The main function of the RHIC cryogenic system is to maintain the superconducting magnets in the two rings of the new collider-accelerator at Brookhaven National Laboratory at or below 4.5K. The main feature in the RHIC cryogenic system is the helium refrigerator. A new process control philosophy was implemented that allows this system to track the actual load from the accelerator rings and lets it respond accordingly. The refrigerator capacity decreases as the load decreases and increases as t… more
Date: March 30, 2004
Creator: SIDI-YEKHLEF,A. TUOZOLO,J. NICOLETTI,A. WOZNIAK,T. WARKENTIEN,A. DEJONG,W. TALLERICO,T. ZANTOPP,D.
Partner: UNT Libraries Government Documents Department
open access

Comparison of quantum confinement effects between quantum wires and dots

Description: Dimensionality is an important factor to govern the electronic structures of semiconductor nanocrystals. The quantum confinement energies in one-dimensional quantum wires and zero-dimensional quantum dots are quite different. Using large-scale first-principles calculations, we systematically study the electronic structures of semiconductor (including group IV, III-V, and II-VI) surface-passivated quantum wires and dots. The band-gap energies of quantum wires and dots have the same scaling with … more
Date: March 30, 2004
Creator: Li, Jingbo & Wang, Lin-Wang
Partner: UNT Libraries Government Documents Department
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