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[Clipping: "Metro 2"]
Copy of the "E" section of the June 1990 edition of The Washington Post. Included are articles about the lack of pedestrian safety in historic Washington, D. C., Barbara Lazarsky's passion for flying, comics, and more.
Date:
June 8, 1990
Creator:
unknown
Object Type:
Clipping
System:
The Portal to Texas History
Report of the CEBAF PAC4 Subcomittee on STAR
This report discusses the following topics: the symmetric toroidal array (STAR) spectrometer facility; investigation of the N {yields} {Delta} transition; Hyperon production in the (e, e{prime}k) reactions; investigation of few-body systems with the (e, e{prime}p) reaction; nuclear structure studies with the (e,e{prime}pp) reaction; Measurement of G{sub Em} in a recoil polarimetry measurement; parity violation measurements; and STAR design and performance.
Date:
August 8, 1990
Creator:
Barnes, P. D.
Object Type:
Report
System:
The UNT Digital Library
A one-wire'' battery monitoring system with applications to on-board charging for electric vehicles
A novel on-board charge system which utilizes a One-Wire'' system for voltage monitoring is discussed and test results obtained using the system are presented. The system consists of a 20 kHz high frequency charger, an algorithm for charging lead-acid batteries with gelled electrolyte, such that gassing is avoided, the control system to implement this charge algorithm and a one-wire battery monitoring system to provide cell/module voltage information to the battery charge controller. Prototype elements of the system have been tested and the system was installed into an EVA Pacer electric vehicle. Charge tests are performed and data taken with the system installed. All elements of the system functioned properly under user conditions. In particular, the charger demonstrated good efficiency, near unity power factor and full programmability. The charge controller functioned reliably and without flaw. The one-wire monitoring system which permits monitoring of cell/module voltages in a battery pack without an extensive conventional wire harness has proven effective and voltage measurements have taken fast enough for control of charging. It was found that for the purpose of voltage monitoring under driving conditions, the system in its present form is too slow.
Date:
October 8, 1990
Creator:
Nowak, D.
Object Type:
Report
System:
The UNT Digital Library
A 3D Particle Simulation Code for Heavy Ion Fusion Accelerator Studies
We describe WARP, a new particle-in-cell code being developed and optimized for ion beam studies in true geometry. We seek to model transport around bends, axial compression with strong focusing, multiple beamlet interaction, and other inherently 3d processes that affect emittance growth. Constraints imposed by memory and running time are severe. Thus, we employ only two 3d field arrays ({rho} and {phi}), and difference {phi} directly on each particle to get E, rather than interpolating E from three meshes; use of a single 3d array is feasible. A new method for PIC simulation of bent beams follows the beam particles in a family of rotated laboratory frames, thus straightening'' the bends. We are also incorporating an envelope calculation, an (r, z) model, and 1d (axial) model within WARP. The BASIS development and run-time system is used, providing a powerful interactive environment in which the user has access to all variables in the code database. 10 refs., 3 figs.
Date:
June 8, 1990
Creator:
Friedman, A.; Bangerter, R. O.; Callahan, D. A.; Grote, D. P.; Langdon, A. B. & Haber, I.
Object Type:
Article
System:
The UNT Digital Library
Report of Foreign Travel of C. E. Klots, September 1990
Accounts are given of the two major international conferences on the physics and chemistry of small particles, commonly referred to as van der Waals particles. Details of special interest to Oak Ridge National Laboratory personnel are cited. Information exchanges at Freiburg and Paris are described.
Date:
October 8, 1990
Creator:
Klots, C. E.
Object Type:
Report
System:
The UNT Digital Library
Development of deep drawn aluminum piston tanks
An aluminum piston tank has been developed for applications requiring lightweight, low cost, low pressure, positive-expulsion liquid storage. The 3 liter (183 in{sup 3}) vessel is made primarily from aluminum sheet, using production forming and joining operations. The development process relied mainly on pressurizing prototype parts and assemblies to failure, as the primary source of decision making information for driving the tank design toward its optimum minimum-mass configuration. Critical issues addressed by development testing included piston operation, strength of thin-walled formed shells, alloy choice, and joining the end cap to the seamless deep drawn can. 9 refs., 8 figs.
Date:
June 8, 1990
Creator:
Whitehead, J. C.; Bronder, R. L.; Kilgard, L. W.; Evans, M. C.; Ormsby, A. E.; Spears, H. R. et al.
Object Type:
Article
System:
The UNT Digital Library
Report of Foreign Travel of Daniel B. Waddle, September 1990
Purpose [of travel]: To present findings of the Costa Rica Power Sector Efficiency Study to the Instituto Costarricense de Electridad, and to the Ministry of Energy, Natural Resources and Mining. To discuss the progress and plans for the Central American Rural Electrification Project with US Agency for International Development (USAID)/Regional Office Central American Program (ROCAP). Abstract: I traveled to San Jose, Costa Rica to present the findings of the Costa Rica Power Sector Efficiency Study to our counterparts in the utility and the Ministry of Energy. Discussions were held with line level managers at Instituto Costarricensede Electricidad (ICE) and Ministry of Energy Mines and Natural Resources (MIRENEM), as well as a plan of action set for the final stage of the project. Discussions were held for a one day period with both the bilateral Agency for International Development (AID) and the regional AID mission regarding the need for a similar study in Guatemala and matters directly pertaining to the Central American Rural Electrification Study (CARES) project.
Date:
October 8, 1990
Creator:
Waddle, Daniel B.
Object Type:
Report
System:
The UNT Digital Library
The records management challenge
None
Date:
August 8, 1990
Creator:
Zeile, H. J.
Object Type:
Article
System:
The UNT Digital Library
Synthesis of model compounds for coal liquification research
Research continued on the synthesis of model compounds for coal liquefaction research. This report covers the actual laboratory investigation performed during the reporting period in order to attain the stated objective of the project, viz, the synthesis of a model compound containing tetrahydronaphthalene, naphthalene and phenyl moieties linked by methylene, ethylene and ether bonds. The overall synthetic approach aimed at obtaining the end product has been broken down into three major steps that involve the synthesis of three key reactive intermediates. These are: (1) 3,5-dimethyl-5-bromobenzyl chloride, (2) 1-chloromethylene-2-hydroxytetralin and (3) 2-chloromethylene-1-hydroxynaphthalene.
Date:
October 8, 1990
Creator:
Sen, P.K.
Object Type:
Report
System:
The UNT Digital Library
Kinetics and mechanisms of the reactions of alkyl radicals with oxygen and with complexes of Co(III), Ru(III), and Ni(III)
The kinetics of the reactions of C{sub 2}H{sub 5} radical with Co(NH{sub 3}){sub 5}X{sup 2+}, Ru(NH{sub 3}){sub 5}X{sup 2+}, and Co(dmgH){sub 2} (X) (Y) (X = Br, Cl, N{sub 3}, SCN; Y = H{sub 2}O, CH{sub 3}CN) complexes were studied using laser flash photolysis of ethylcobalt complexes. The kinetics were obtained by the kinetic probe method. Some relative rate constants were also determined by a competition method based on ethyl halide product ratios. The kinetics of colligation reactions of a series of alkyl radicals with {beta}-Ni(cyclam){sup 2+} were studied using flaser flash photolysis of alkylcobalt complexes. Again, the kinetics were obtained by employing the kinetic probe competition method. The kinetics of the unimolecular homolysis of a series of RNi(cyclam)H{sub 2}O{sup 2+} were studied. Activation parameters were obtained for the unimolecular homolysis of C{sub 2}H{sub 5}Ni(cyclam)H{sub 2}O{sup 2+}. Kinetic and thermodynamic data obtained from these reactions were compared with those for the {sigma}-bonded organometallic complexes. The kinetics of the unimolecular homolysis of a series of RNi(cyclam)H{sub 2}O{sup 2+} complexes were studied by monitoring the formation of the oxygen insertion product RO{sub 2}Ni(cyclam)H{sub 2}O{sup 2+}. The higher rate constants for the reactions of alkyl radicals with oxygen in solution, as compared with …
Date:
October 8, 1990
Creator:
Kelley, Douglas
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Penetration of yawed projectiles
We used computer simulations and experiment to study the penetration of tungsten-alloy projectiles into a thick, armored steel target. These projectiles, with length-to-diameter ratios of 4, strike the target with severe yaws, up to 90{degree}(side-on-impact), such as might be induced in an originally longer projectile by a multiple-spaced plate array. In this study, we focus on the terminal ballistics of these projectiles and ignore how the yaw was induced. We found that the minimum penetration depth occurs at 90{degree}yaw. This case is well approximated by the two-dimensional plane-strain penetration of a side-on cylinder. The ratio of penetration depth to diameter, P:D, for this case is larger than that for a sphere because the plane-strain geometry lacks hoop stress, which is activated in axisymmetric geometry. A more surprising result of work is that the penetration at 60{degree} yaw is only slightly deeper than that of the side-on impact. 8 refs., 15 figs., 3 tabs.
Date:
October 8, 1990
Creator:
Reaugh, J.E.
Object Type:
Report
System:
The UNT Digital Library
Application of Ultrasonic Guided Waves to the Characterization of Texture in Metal Sheets of Cubic and Hexagonal Crystallites
Ultrasonic techniques have recently been applied to the texture characterization in polycrystalline aggregates of hexagonal crystals. The basis of this application lies in the relations between the elastic constants {bar C}{sub ij} of the aggregates, which can be inferred from ultrasonic wave velocity measurements, and the orientation distribution coefficients. This communication present such relations for aggregates which possess orthotopic material symmetry and hexagonal crystal symmetry for Voigt, Reuss, and Hill averaging methods in a unified and concise representation.
Date:
October 8, 1990
Creator:
Li, Yan
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Cherokeean/Herald (Rusk, Tex.), Vol. 142, No. 5, Ed. 1 Thursday, March 8, 1990
Weekly newspaper from Rusk, Texas that includes local, state and national news along with extensive advertising.
Date:
March 8, 1990
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Cherokeean/Herald (Rusk, Tex.), Vol. 142, No. 40, Ed. 1 Thursday, November 8, 1990
Weekly newspaper from Rusk, Texas that includes local, state and national news along with extensive advertising.
Date:
November 8, 1990
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Cherokeean/Herald (Rusk, Tex.), Vol. 142, No. 1, Ed. 1 Thursday, February 8, 1990
Weekly newspaper from Rusk, Texas that includes local, state and national news along with extensive advertising.
Date:
February 8, 1990
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Texas Register, Volume 15, Number 35, Pages 2609-2651, May 8, 1990
A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date:
May 8, 1990
Creator:
Texas. Secretary of State.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Texas Register, Volume 15, Number 43, Pages 3271-3375, June 8, 1990
A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date:
June 8, 1990
Creator:
Texas. Secretary of State.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Texas Attorney General Opinion: JM-1134
Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Jim Mattox, regarding a legal question submitted for clarification: Right of appeal to the Texas Racing Commission by a person fined at a nonpari-mutuel racetrack, validity of regulation of nonpari-mutuel racing, and related questions (RQ-1831)
Date:
January 8, 1990
Creator:
Texas. Attorney-General's Office.
Object Type:
Text
System:
The Portal to Texas History
Texas Attorney General Opinion: JM-1204
Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Jim Mattox, regarding a legal question submitted for clarification: Whether an uncompensated commissioner of a county housing authority may receive mileage credits attributable to authority travel (RQ-1979)
Date:
August 8, 1990
Creator:
Texas. Attorney-General's Office.
Object Type:
Text
System:
The Portal to Texas History
Texas Attorney General Opinion: JM-1231
Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Jim Mattox, regarding a legal question submitted for clarification: Authority of the Employees Retirement System of Texas to operate a securities lending program (RQ-1908)
Date:
October 8, 1990
Creator:
Texas. Attorney-General's Office.
Object Type:
Text
System:
The Portal to Texas History
Texas Attorney General Opinion: JM-1241
Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Jim Mattox, regarding a legal question submitted for clarification;Authority of a county too trim, remove, or sell trees from county road rights-of-way(RQ-1970).
Date:
November 8, 1990
Creator:
Texas. Attorney-General's Office.
Object Type:
Text
System:
The Portal to Texas History
Texas Attorney General Opinion: LO90-73
Letter opinion issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Jim Mattox, regarding a legal question submitted for clarification; Whether a home rule municipality may terminate a perpetual care trust originally created under the provisions of former V.T.C.S. article 912a-15.
Date:
October 8, 1990
Creator:
Texas. Attorney-General's Office.
Object Type:
Text
System:
The Portal to Texas History
[Agenda for the San Antonio Chapter of the Links, Inc. Meeting - April 8, 1990]
Agenda for the April 8, 1990 meeting of the San Antonio chapter of The Links, Inc. Items for discussion include the chapter's correspondence, treasury reports, committee reports, and current business. Includes handwritten notes.
Date:
April 8, 1990
Creator:
Links, Inc. San Antonio Chapter.
Object Type:
Text
System:
The Portal to Texas History
[Minutes for the San Antonio Chapter of the Links, Inc. Meeting - April 8, 1990]
Minutes from the April 8, 1990 meeting of the San Antonio chapter of The Links, Inc. Discusses the chapter's correspondence, finances, committee activities, plans for a fundraiser, and other business. Also includes the official notice for the next regular chapter meeting to be held on May 20, 1990.
Date:
April 8, 1990
Creator:
Links, Inc. San Antonio Chapter.
Object Type:
Text
System:
The Portal to Texas History