1,422 Matching Results

Search Results

prev Results: 1417 - 1422
open access

Oak Ridge Isotope Products and Services - Current and Expected Supply and Demand

Description: Oak Ridge National Laboratory (ORNL) has been a major center of isotope production research, development, and distribution for over 50 years. Currently, the major isotope production activities include (1) the production of transuranium element radioisotopes, including 252 Cf; (2) the production of medical and industrial radioisotopes; (3) maintenance and expansion of the capabilities for production of enriched stable isotopes; and, (4) preparation of a wide range of custom-order chemical and ph… more
Date: August 29, 1999
Creator: Aaron, W. S.; Alexander, C. W.; Cline, R. L.; Collins, E. D.; Klein, J. A.; Knauer, J. B., Jr. et al.
Partner: UNT Libraries Government Documents Department
open access

Commissioning RHICS electron lens

Description: N/A
Date: September 29, 2013
Creator: Gu, X.; Altinbas, Z.; Anerella, M.; Bruno, D.; Costanzo, M.; Dawson, W.C. et al.
Partner: UNT Libraries Government Documents Department
open access

Pyomelanin Is Produced by Shewanella Algae BrY and Effected by Exogenous Iron

Description: Melanin production by S. algae BrY occurred during late/post-exponential growth in lactate-basal-salts liquid medium supplemented with tyrosine or phenylalanine. The antioxidant ascorbate inhibited melanin production, but not production of the melanin precursor, homogentisic acid. In the absence of ascorbate, melanin production was inhibited by the 4-hydroxyplenylpyruvate dioxygenase inhibitor, sulcotrione and Fe(II) (>0.2mM). These data support the hypothesis that pigment production by S. a… more
Date: November 29, 2006
Creator: Turick, Charles E.; Caccavo, Frank, Jr. & Tisa, Louis S.
Partner: UNT Libraries Government Documents Department
open access

Sputtering calculations with the discrete ordinated method

Description: The purpose of this work is to investigate the applicability of the discrete ordinates (S/sub N/) method to light ion sputtering problems. In particular, the neutral particle discrete ordinates computer code, ANISN, was used to calculate sputtering yields. No modifications to this code were necessary to treat charged particle transport. However, a cross section processing code was written for the generation of multigroup cross sections; these cross sections include a modification to the total m… more
Date: November 29, 1977
Creator: Hoffman, T. J.; Dodds Jr., H. L.; Robinson, M.T. & Holmes, D.K.
Partner: UNT Libraries Government Documents Department
open access

Multimodal and multiscale strengthening mechanisms in Al-Ni-Zr-Ti-Mn alloy processed by laser powder bed fusion additive manufacturing

Description: Article describes how the unique thermokinetics of laser-powder bed fusion additive manufacturing has been exploited for development of a novel high strength Al-Ni-Ti-Zr-Mn alloy. The authors say that the addition of 0.5 wt% Mn leads to extraordinary improvement in ultimate tensile strength (502 MPa) and work hardening due to the activation of two Mn-induced strengthening mechanisms
Date: December 29, 2023
Creator: Dhal, Abhijeet; Thapliyal, Saket; Agrawal, Priyanka; Roy, Ankita; Sharma, Aishani; Mishra, R. S. et al.
Partner: UNT College of Engineering
open access

An experimental and modeling study on auto-ignition kinetics of ammonia/methanol mixtures at intermediate temperature and high pressure

Description: Article describes how a rapid compression machine has been applied to measure the ignition delay times of NH3/CH3OH mixtures covering pressures of 20 and 40 bar, equivalence ratios of 0.5, 1.0 and 2.0, and temperatures between 845 and 1100 K. Analysis of the pressure profiles shows three distinct ignition modes for NH3/CH3OH mixtures, facilitated by the pre-ignition heat release from NH3 consumption. A detailed mechanism for ignition of NH3/CH3OH fuel blends has been developed, capable of repro… more
Date: April 29, 2022
Creator: Li, Mengdi; He, Xiaoyu; Hashemi, Hamid; Glarborg, Peter; Lowe, Vincent M.; Marshall, Paul et al.
Partner: UNT College of Science
Back to Top of Screen