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Office of Scientific & Technical Information Technical Reports
350
Congressional Research Service Reports
131
Texas Attorney General Opinions
62
Texas Patents
58
Government Accountability Office Reports
33
Texas Laws and Resolutions Archive
32
Technical Report Archive and Image Library
29
National Advisory Committee for Aeronautics Collection
16
Defense Base Closure and Realignment Commission
10
TRAIL Microcard Collection
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722 Matching Results
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Electric Signal System
Patent for electric signal system. Illustration included.
Date:
May 16, 1905
Creator:
Adams, Edwin Johnson
Object Type:
Patent
System:
The Portal to Texas History
Studies of the Transformations of Sulfur Containing Heterocycles by Transition Metal Cluster Compounds. Final Report, June 1, 1995 - October 31, 1999
Report on results of research on the catalytic macrocyclization reactions of thietane and thiolactones by metal carbonyl complexes.
Date:
May 16, 2001
Creator:
Adams, Richard D.
Object Type:
Report
System:
The UNT Digital Library
Securing collaborative environments
The diverse set of organizations and software components involved in a typical collaboratory make providing a seamless security solution difficult. In addition, the users need support for a broad range of frequency and locations for access to the collaboratory. A collaboratory security solution needs to be robust enough to ensure that valid participants are not denied access because of its failure. There are many tools that can be applied to the task of securing collaborative environments and these include public key infrastructure, secure sockets layer, Kerberos, virtual and real private networks, grid security infrastructure, and username/password. A combination of these mechanisms can provide effective secure collaboration capabilities. In this paper, we discuss the requirements of typical collaboratories and some proposals for applying various security mechanisms to collaborative environments.
Date:
May 16, 2002
Creator:
Agarwal, Deborah; Jackson, Keith & Thompson, Mary
Object Type:
Article
System:
The UNT Digital Library
Brief Backgrounder on Mineral Commodities in the U.S. Stockpile, 1975
This report is about the mineral commodities in the U.S stockpile for the year 1975.
Date:
May 16, 1975
Creator:
Agnew, Allen F.
Object Type:
Report
System:
The UNT Digital Library
Setup and Performance of the Rhic Injector Accelerators for the 2005 Run With Copper Ions.
Copper ions for the 2005 run [1] of the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory (BNL) are accelerated in the Tandem, Booster and AGS prior to injection into RHIC. The setup and performance of these accelerators with copper are reviewed in this paper.
Date:
May 16, 2005
Creator:
Ahrens, L.; Alessi, J. & Gardner, C. J.
Object Type:
Article
System:
The UNT Digital Library
U.S energy policy : The minimum import price for oil
This report provides new strategies to develop new energy supplies and minimum import prices for oil.
Date:
May 16, 1975
Creator:
Alfred Refiman
Object Type:
Report
System:
The UNT Digital Library
Reactive Multiphase Behavior of CO2 in Saline Aquifers Beneath the Colorado Plateau
Soil CO{sub 2} flux surveys have been conducted over known CO{sub 2} reservoirs at Farnham Dome, Utah, Crystal Geyser-Ten Mile Graben in Utah and Springerville-St. Johns, Arizona. No anomalous CO{sub 2} flux was detected at the Farnham Dome and Springerville-St. Johns. At Crystal Geyser-Ten Mile Graben, localized areas of anomalously high CO{sub 2} flux ({approx}100 g m{sup -2} day{sup -1}) occur along a fault zone near visibly degassing features. Isotopic measurements on CO{sub 2} collected from nearby springs indicate that it originated at depth. Evidence of widespread vein calcite at the surface (Farnham Dome) and travertine deposits at the other two areas suggests that discharge of CO{sub 2}-rich fluids has occurred in the past. Despite the lack of evidence for significant present day leakage of CO{sub 2} to the atmosphere at Springerville-St. Johns and Crystal Geyser-Ten Mile Graben, there are significant outflows of high-bicarbonate water in both areas suggesting continuous migration of CO{sub 2} in the aqueous phase from depth. The very localized nature of the CO{sub 2} flux anomalies, and the outflow of ground water containing dissolved CO{sub 2} present challenges for effective, long term monitoring of CO{sub 2} leakage.
Date:
May 16, 2005
Creator:
Allis, R. G.; Moore, J. & White, S.
Object Type:
Report
System:
The UNT Digital Library
2001 Columbia River Recreation Survey -- Implications for Hanford Site Integrated Assessment
This report presents the results from the Columbia River Recreation Survey conducted in the summer of 2001. The survey combined on-site personal interviews with parties engaged in river recreation with on-site field observations to develop a picture of summer river recreation on the Columbia. The study area stretched from just below Priest Rapids Dam in the north to McNary Dam in the south, and was divided into four "Areas" that correspond to the river areas used by the Groundwater/Vadose Zone Integration Project. This study is part of the Groundwater/Vadose Zone Integration Project and was commissioned specifically to document the current recreation use levels in these areas of the river, and to elicit recreation-related expenditure information from visitors. This information informs economic and environmental models used to measure the economic risk posed by possible, but unlikely, releases of contaminants from the Hanford site into the Columbia River. During the study period, researchers collected 256 survey responses and 396 field observations from recreation sites up and down both shores of the river in the study area. Results presented include analysis of trip duration by river activity, trip frequency, and visitor place of origin. Economics-related results include trip expenditure profiles by activity and …
Date:
May 16, 2002
Creator:
Anderson, Dave M.; Scott, Michael J.; Bunn, Amoret L.; Fowler, Richard A.; Prendergast, Ellen L.; Miley, Terri B. et al.
Object Type:
Report
System:
The UNT Digital Library
Preparation of U233
Technical report. The object of the research is to determine the procedure and equipment for the preparation of U233 on a semi-works scale. The general proposed procedure is that thorium carbonate in aluminum cans will be irradiated with pile neutrons. The Pa233 resulting from neutron absorption the Th232 and the decay of Th233 will be extraction from 99% of the thorium and the natural U in thorium by MnO2 precipitations. The Pa233 will then be allowed to decay to U233 which in turn will be isolated from the remaining Th and partially decayed Pa233 by ether extraction.
Date:
May 16, 1944
Creator:
Apple, R. S.
Object Type:
Report
System:
The UNT Digital Library
Emissivity of 304 and 347 stainless steel tubing and special coatings. [Proposed testing procedures]
None
Date:
May 16, 1966
Creator:
Arnold, C. E.
Object Type:
Report
System:
The UNT Digital Library
Are recoil polarization measurements of G{sup P}{ovr sub E}/G{sup P}{ovr sub M} consistent with Rosenbluth separation data?
Recent recoil polarization measurements in Hall A at Jefferson Lab show that the ratio of the electric to magnetic form factors for the proton decreases significantly with increasing Q{sup 2}. This contradicts previous Rosenbluth measurements which indicate approximate scaling of the form factors ({micro}{sub p} G{sub E}{sup p}(Q{sup 2})/G{sub M}{sup p} (Q{sup 2}) {approx} 1). The cross section measurements were reanalyzed to try and understand the source of this discrepancy. They find that the Rosenbluth measurements are consistent when normalization uncertainties are taken into account, and that the discrepancy cannot come from errors in one or two data sets. If there is a problem in the Rosenbluth data, it must be a systematic, {epsilon}-dependent uncertainty affecting several experiments.
Date:
May 16, 2002
Creator:
Arrington, J.
Object Type:
Article
System:
The UNT Digital Library
NNLL QCD Contribution of the Electromagentic Dipole Operator to \bar B --> X_s gamma
We present an independent calculation of that part of the O({alpha}{sub s}{sup 2}) contribution to dipole operator {Omicron}{sub 7}. Using a different method, we find complete agreement mass ambiguity appearing at NLL accuracy. the complete NNLL prediction of {Lambda}({bar B} {yields} X{sub s}{gamma}) which will resolve the charm quark the decay width {Lambda}({bar B} {yields} X{sub s}{gamma}) which arises from the self-interference term of the electromagnetic with a previous calculation. This NNLL contribution is an important ingredient for
Date:
May 16, 2006
Creator:
Asatrian, H.M.; Hovhannisyan, A.; Poghosyan, V.; Inst., /Yerevan Phys.; Ewerth, T.; Greub, C. et al.
Object Type:
Article
System:
The UNT Digital Library
Valve-Grinder.
Patent for a valve grinder that fit together perfectly to prevent leakage and a consequent loss of power.
Date:
May 16, 1916
Creator:
Atkin, Frank R.
Object Type:
Patent
System:
The Portal to Texas History
Amplitude Analysis of the B+ to phi K*+(892) Decay
We perform an amplitude analysis of B{sup {+-}} {yields} {var_phi}(1020)K*(892){sup {+-}} decay with a sample of about 384 million B{bar B} pairs recorded with the BABAR detector. Overall, twelve parameters are measured, including the fractions of longitudinal f{sub L} and parity-odd transverse f{sub {perpendicular}} amplitudes, branching fraction, strong phases, and six parameters sensitive to CP-violation. We use the dependence on the K{pi} invariant mass of the interference between the J{sup P} = 1{sup -} and 0{sup +} K{pi} components to resolve the discrete ambiguity in the determination of the strong and weak phases. Our measurements of f{sub L} = 0.49 {+-} 0.05 {+-} 0.03, f{sub {perpendicular}} = 0.21 {+-} 0.05 {+-} 0.02, and the strong phases point to the presence of a substantial helicity-plus amplitude from a presently unknown source.
Date:
May 16, 2007
Creator:
Aubert, B.
Object Type:
Article
System:
The UNT Digital Library
Measurement of th eta and etaprime Transition Form Factors at q^2 = 112 GeV^2
The authors report a study of the processes e{sup +}e{sup -} {yields} {eta}{gamma} and e{sup +}e{sup -} {yields} {eta}'{gamma} at a center-of-mass energy of 10.58 GeV, using a 232 fb{sup -1} data sample collected with the BABAR detector at the PEP-II collider at SLAC.
Date:
May 16, 2006
Creator:
Aubert, B.
Object Type:
Article
System:
The UNT Digital Library
A Study of B0 to rho+rho- Decays and Constraints on theCKM Angle alpha
The authors present results from an analysis of B{sup 0} {yields} {rho}{sup +}{rho}{sup -} decays using (383.6 {+-} 4.2) x 10{sup 6} B{bar B} pairs collected by the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. The measurements of the B{sup 0} {yields} {rho}{sup +}{rho}{sup -} branching fraction, longitudinal polarization fraction f{sub L}, and the CP-violating parameters S{sub long} and C{sub long} are: {Beta}(B{sup 0} {yields} {rho}{sup +}{rho}{sup -}) = (25.5 {+-} 2.1(stat){sub -3.9}{sup +3.6}(syst)) x 10{sup -6}, f{sub L} = 0.992 {+-} 0.024(stat){sub -0.013}{sup +0.026}(syst), S{sub long} = -0.17 {+-} 0.20(stat){sub -0.06}{sup +0.05}(syst), C{sub long} = 0.01 {+-} 0.15(stat) {+-} 0.06(syst). The authors determine the unitarity triangle angle {alpha}, using an isospin analysis of B {yields} {rho}{rho} decays. One of the two solutions, {alpha} = [73.1, 117.0]{sup o} at 68% CL is compatible with standard model-based fits of existing data. Constraints on the unitarity triangle are also evaluated using an SU(3) symmetry based approach.
Date:
May 16, 2007
Creator:
Aubert, B.
Object Type:
Article
System:
The UNT Digital Library
Study of B -> D^(*)D_s(J)^(*) Decays andMeasurement of D_s^- and D_s(J)(2460)- Branching Fractions
We present branching fraction measurements of twelve B meson decays of the form B {yields} D{sup (*)} D{sub s(J)}{sup (*)}. The results are based on {Upsilon}(4S) decays in B{bar B} pairs. One of the B mesons is fully reconstructed and the other decays to two charm mesons, of which one is reconstructed, and the mass and momentum of the other is inferred by kinematics. Combining these results with previous exclusive branching fraction measurements, we determine {Beta}(D{sub s}{sup -} {yields} {phi}{pi}{sup -}) = (4.62 {+-} 0.36{sub stat.} {+-} 0.51{sub syst.})%, {Beta}(D{sub sJ}(2460){sup -} {yields} D*{sub s}{sup -} {pi}{sup 0}) = (56 {+-} 13{sub stat.} {+-} 9{sub syst.})% and {Beta}(D{sub sJ}(2460){sup -} {yields} D{sub s}{sup -}{gamma}) = (16 {+-} 4{sub stat.} {+-} 3{sub syst.})%.
Date:
May 16, 2006
Creator:
Aubert, B.; Barate, R.; Bona, M.; Boutigny, D.; Couderc, F.; Karyotakis, Y. et al.
Object Type:
Article
System:
The UNT Digital Library
The Debt Limit: History and Recent Increases
This report discusses how the total debt of the federal government can increase, an historical overview of debt limits, and how the current economic slowdown has led to higher deficits and thereby a series of debt limit increases, as well as legislation related to these increases.
Date:
May 16, 2011
Creator:
Austin, D. Andrew & Levit, Mindy R.
Object Type:
Report
System:
The UNT Digital Library
Technical Evaluation for the Determination of CGI Designation for Safety Class Items Incorporated in Hose-in-Hose Transfer Line Assemblies
The purpose of this technical evaluation is to determine whether the secondary hoses are to be categorized as Commercial Grade Items (CGI) or Engineered Equipment. This determination will identify whether or not use of the CGI Dedication process is appropriate.
Date:
May 16, 2000
Creator:
BUCHANAN, J.R.
Object Type:
Report
System:
The UNT Digital Library
Nuclear Data Sheets for 225Fr
Nuclear structure data pertaining to {sup 225}Fr have been evaluated, and incorporated into the ENSDF data file. This evaluation includes literature available by 16 May 2005 and supersedes the previous publication for {sup 225}Fr (Y.A. Akovali, ''Nuclear Data Sheets 60, 617 (1990)'', literature cutoff date 1 June 1989). Data have been incorporated from the following references: 1987Co19, 1997BuO3 and 2003AuO3.
Date:
May 16, 2005
Creator:
Baglin, Coral M.
Object Type:
Report
System:
The UNT Digital Library
POLARIZED PROTON COLLISIONS AT RHIC.
The Relativistic Heavy Ion Collider provides not only collisions of ions but also collisions of polarized protons. In a circular accelerator, the polarization of polarized proton beam can be partially or fully lost when a spin depolarizing resonance is encountered. To preserve the beam polarization during acceleration, two full Siberian snakes were employed in RHIC. In 2002, polarized proton beams were first accelerated to 100 GeV and collided in RHIC. Beams were brought into collisions with longitudinal polarization at the experiments STAR and PHENIX by using spin rotators. Optimizing polarization transmission efficiency and improving luminosity performance are significant challenges. Currently, the luminosity lifetime in RHIC is limited by the beam-beam effect. The current state of RHIC polarized proton program, including its dedicated physics run in 2005 and efforts to optimize luminosity production in beam-beam limited conditions are reported.
Date:
May 16, 2005
Creator:
Bai, M.; Ahrens, L.; Alekseev, I. G.; Alessi, J. & AL., ET
Object Type:
Article
System:
The UNT Digital Library
Observations of Snake Resonance in RHIC.
Siberian snakes now become essential in the polarized proton acceleration. With proper configuration of Siberian snakes, the spin precession tune of the beam becomes 1/2 which avoids all the spin depolarizing resonance. However, the enhancement of the perturbations on the spin motion can still occur when the spin precession tune is near some low order fractional numbers, called snake resonances, and. the beam can be depolarized when passing through the resonance. The snake resonances have been confirmed in the spin tracking calculations, and observed in RHIC with polarized proton beam. Equipped with two full Siberian snakes in each ring, RHIC provides us a perfect facility for snake resonance studies. This paper presents latest experimental results. New insights are also discussed.
Date:
May 16, 2005
Creator:
Bai, M.; Huang, H.; MacKay, W. W.; Pitisyn, V.; Roser, T. & Tepikian, S.
Object Type:
Article
System:
The UNT Digital Library
Panorama-Camera.
Patent for a panorama camera to adjust or remove the film without exposing it, including illustrations.
Date:
May 16, 1905
Creator:
Baker, Franklin James
Object Type:
Patent
System:
The Portal to Texas History
Wrench
Patent for a wrench. Illustration included.
Date:
May 16, 1905
Creator:
Baldwin, Thomas J.
Object Type:
Patent
System:
The Portal to Texas History