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6.70 EV Resonance in U²³⁸ (open access)

6.70 EV Resonance in U²³⁸

"Using the Brookhaven fast chopper, transmission curves were obtained for the 6.70 +/- .06 ev resonance in U238 using four different thicknesses of natural uranium metal." The measurements for the transmission curves are summarized in the table provided.
Date: November 9, 1953
Creator: Levin, Jules S.
Object Type: Report
System: The UNT Digital Library
E-7 at sta. 2

E-7 at sta. 2

Photograph of GFD E-7 at station 2.
Date: November 3, 2017
Creator: unknown
Object Type: Photograph
System: The Gateway to Oklahoma History
The “8(a) Program” for Small Businesses Owned and Controlled by the Socially and Economically Disadvantaged: Legal Requirements and Issues (open access)

The “8(a) Program” for Small Businesses Owned and Controlled by the Socially and Economically Disadvantaged: Legal Requirements and Issues

This report discusses the "8(a) Program", the Minority Small Business and Capital Ownership Development Program, which is a federal contracting for small businesses providing small businesses with training, technical assistance, and contracting opportunities.
Date: November 26, 2014
Creator: Manuel, K. M.
Object Type: Report
System: The UNT Digital Library
8" Distant Control Flooding Valve

8" Distant Control Flooding Valve

Blueprint depicting technical details of Battleship Texas.
Date: November 29, 1920
Creator: unknown
Object Type: Technical Drawing
System: The Portal to Texas History
8-Hydroxyquinoline Colorimetric Method for the Determination of Microgram Quantities of Uranium (open access)

8-Hydroxyquinoline Colorimetric Method for the Determination of Microgram Quantities of Uranium

None
Date: November 19, 1947
Creator: Lee, D. A. & Woodard, R. W.
Object Type: Report
System: The UNT Digital Library
The 8 O'Clock Arc: A Serendipitous Discovery of a Strongly Lensed Lyman Break Galaxy in the SDSS DR4 Imaging Data (open access)

The 8 O'Clock Arc: A Serendipitous Discovery of a Strongly Lensed Lyman Break Galaxy in the SDSS DR4 Imaging Data

We report on the serendipitous discovery of the brightest Lyman Break Galaxy (LBG) currently known, a galaxy at z = 2.73 that is being strongly lensed by the z = 0.38 Luminous Red Galaxy (LRG) SDSS J002240.91+143110.4. The arc of this gravitational lens system, which we have dubbed the ''8 o'clock arc'' due to its time of discovery, was initially identified in the imaging data of the Sloan Digital Sky Survey Data Release 4 (SDSS DR4); followup observations on the Astrophysical Research Consortium (ARC) 3.5m telescope at Apache Point Observatory confirmed the lensing nature of this system and led to the identification of the arc's spectrum as that of an LBG. The arc has a spectrum and a redshift remarkably similar to those of the previous record-holder for brightest LBG (MS 1512-cB58, a.k.a ''cB58''), but, with an estimated total magnitude of (g,r,i) = (20.0,19.2,19.0) and surface brightness of ({mu}{sub g}, {mu}{sub r}, {mu}{sub i}) = (23.3, 22.5, 22.3) mag arcsec{sup -2}, the 8 o'clock arc is thrice as bright. The 8 o'clock arc, which consists of three lensed images of the LBG, is 162{sup o}(9.6'') long and has a length-to-width ratio of 6:1. A fourth image of the LBG--a counter-image--can …
Date: November 1, 2006
Creator: Allam, Sahar S.; Tucker, Douglas L.; Lin, Huan; Diehl, H. Thomas; Annis, James; Buckley-Geer, Elizabeth J. et al.
Object Type: Article
System: The UNT Digital Library
8" Standard Low Pressure Gate Valve Cast Steel 0 - 50 Lbs. Working Pressure

8" Standard Low Pressure Gate Valve Cast Steel 0 - 50 Lbs. Working Pressure

Blueprint depicting technical details of Battleship Texas.
Date: November 4, 1925
Creator: unknown
Object Type: Technical Drawing
System: The Portal to Texas History
8" Standard Low Pressure Swing Check Valve Up To 100 Lbs

8" Standard Low Pressure Swing Check Valve Up To 100 Lbs

Blueprint depicting technical details of Battleship Texas.
Date: November 24, 1924
Creator: unknown
Object Type: Technical Drawing
System: The Portal to Texas History
9-11 Commission Hearing #5, November 19, 2003, Part 1 captions transcript

9-11 Commission Hearing #5, November 19, 2003, Part 1

Recording of the fifth public hearing held by the National Commission on Terrorist Attacks upon the United States on November 19, 2003 at Drew University in Madison, New Jersey. The Commission heard from New Jersey Governor James E. McGreevey; four panels of business officials and federal, state, and local government representatives; and individuals working to enhance emergency preparedness in the private sector. This section includes the opening statements from Chairman Kean and Governor McGreevey, in addition to the first panel on risks and consequences of Terrorism for the private sector.
Date: November 19, 2003
Creator: National Commission on Terrorist Attacks upon the United States
Object Type: Video
System: The UNT Digital Library
9-11 Commission Hearing #5, November 19, 2003, Part 2 captions transcript

9-11 Commission Hearing #5, November 19, 2003, Part 2

Recording of the fifth public hearing held by the National Commission on Terrorist Attacks upon the United States on November 19, 2003 at Drew University in Madison, New Jersey. The Commission heard from New Jersey Governor James E. McGreevey; four panels of business officials and federal, state, and local government representatives; and individuals working to enhance emergency preparedness in the private sector. This section includes the panel on skyscraper safety issues from 9-11 family members with testimony from Monica Gabrielle and Sally Regenhard.
Date: November 19, 2003
Creator: National Commission on Terrorist Attacks upon the United States
Object Type: Video
System: The UNT Digital Library
9-11 Commission Hearing #5, November 19, 2003, Part 3 captions transcript

9-11 Commission Hearing #5, November 19, 2003, Part 3

Recording of the fifth public hearing held by the National Commission on Terrorist Attacks upon the United States on November 19, 2003 at Drew University in Madison, New Jersey. The Commission heard from New Jersey Governor James E. McGreevey; four panels of business officials and federal, state, and local government representatives; and individuals working to enhance emergency preparedness in the private sector. This section includes the panel on public/private initiatives since 9-11, with testimony from Micheal F. Byrne, Dennis J. Reimer, and Richard A. Andrews.
Date: November 19, 2003
Creator: National Commission on Terrorist Attacks upon the United States
Object Type: Video
System: The UNT Digital Library
9-11 Commission Hearing #5, November 19, 2003, Part 4 captions transcript

9-11 Commission Hearing #5, November 19, 2003, Part 4

Recording of the fifth public hearing held by the National Commission on Terrorist Attacks upon the United States on November 19, 2003 at Drew University in Madison, New Jersey. The Commission heard from New Jersey Governor James E. McGreevey; four panels of business officials and federal, state, and local government representatives; and individuals working to enhance emergency preparedness in the private sector. This section includes multimedia presentations of initiatives across the United States from Kings County, Washington, and the International Association Assembly Managers and the panel on private sector experience on 9-11 with testimony from William Y. Yun.
Date: November 19, 2003
Creator: National Commission on Terrorist Attacks upon the United States
Object Type: Video
System: The UNT Digital Library
9-11 Commission Hearing #5, November 19, 2003, Part 5 captions transcript

9-11 Commission Hearing #5, November 19, 2003, Part 5

Recording of the fifth public hearing held by the National Commission on Terrorist Attacks upon the United States on November 19, 2003 at Drew University in Madison, New Jersey. The Commission heard from New Jersey Governor James E. McGreevey; four panels of business officials and federal, state, and local government representatives; and individuals working to enhance emergency preparedness in the private sector. This section includes the panel on standards for emergency management and business continuity with testimony from Glenn Corbett and Randall Yim.
Date: November 19, 2003
Creator: National Commission on Terrorist Attacks upon the United States
Object Type: Video
System: The UNT Digital Library
9-11 Commission Hearing #5, November 19, 2003, Part 6 captions transcript

9-11 Commission Hearing #5, November 19, 2003, Part 6

Recording of the fifth public hearing held by the National Commission on Terrorist Attacks upon the United States on November 19, 2003 at Drew University in Madison, New Jersey. The Commission heard from New Jersey Governor James E. McGreevey; four panels of business officials and federal, state, and local government representatives; and individuals working to enhance emergency preparedness in the private sector. This section includes the panel on future strategies for private sector preparedness with testimony from William G. Raisch, Peter R. Orszag, James Haviaris, and Thomas Susman.
Date: November 19, 2003
Creator: National Commission on Terrorist Attacks upon the United States
Object Type: Video
System: The UNT Digital Library
9/11 Commission Recommendations: The Senate Confirmation Process for Presidential Nominees (open access)

9/11 Commission Recommendations: The Senate Confirmation Process for Presidential Nominees

On July 22, 2004, the National Commission on Terrorist Attacks Upon the United States, known as the 9/11 Commission, issued its final report, detailing the events up to and including the September 11, 2001 terrorist attacks upon the United States. The 9/11 Commission recommended that the Senate adopt rules requiring hearings and votes to confirm or reject national security nominees within 30 days of their submission at the start of each new presidential administration. Implementing the commission's proposal would involve imposing new restrictions on both the power of committee chairs to control the agenda of their committees and the rights of Senators to delay or block nominations through holds and extended debate. This report discusses in detail this proposal, how it could be implemented, and the potential effects of its implementation.
Date: November 22, 2004
Creator: Palmer, Betsy
Object Type: Report
System: The UNT Digital Library
10" whistle-relocation of

10" whistle-relocation of

Blueprint depicting technical details of Battleship Texas.
Date: November 25, 1936
Creator: unknown
Object Type: Technical Drawing
System: The Portal to Texas History
A 12-MW-scale pilot study of in-duct scrubbing (IDS) using a rotary atomizer (open access)

A 12-MW-scale pilot study of in-duct scrubbing (IDS) using a rotary atomizer

A low-cost, moderate-removal efficiency, flue gas desulfurization (FGD) technology was selected by the US Department of Energy for pilot demonstration in its Acid Rain Precursor Control Technology Initiative. The process, identified as In-Duct Scrubbing (IDS), applies rotary atomizer techniques developed for lime-based spray dryer FGD while utilizing existing flue gas ductwork and particulate collectors. IDS technology is anticipated to result in a dry desulfurization process with a moderate removal efficiency (50% or greater) for high-sulfur coal-fired boilers. The critical elements for successful application are: (1) adequate mixing of sorbent droplets with flue gas for efficient reaction contact, (2) sufficient residence time to produce a non-wetting product, and (3) appropriate ductwork cross-sectional area to prevent deposition of wet reaction products before particle drying is comple. The ductwork in many older plants, previously modified to meet 1970 Clean Air Act requirements for particulate control, usually meet these criteria. A 12 MW-scale IDS pilot plant was constructed at the Muskingum River Plant of the American Electric Power System. The pilot plant, which operates from a slipstrem attached to the air-preheater outlet duct from the Unit 5 boiler at the Muskingum River Plant (which burns about 4% sulfur coal), is equipped with three atomizer …
Date: November 1, 1989
Creator: Samuel, E. A.; Murphy, K. R. & Demian, A.
Object Type: Report
System: The UNT Digital Library
A 12-MW-scale pilot study of in-duct scrubbing (IDS) using a rotary atomizer (open access)

A 12-MW-scale pilot study of in-duct scrubbing (IDS) using a rotary atomizer

A low-cost, moderate-removal efficiency, flue gas desulfurization (FGD) technology was selected by the US Department of Energy for pilot demonstration in its Acid Rain Precursor Control Technology Initiative. The process, identified as In-Duct Scrubbing (IDS), applies rotary atomizer techniques developed for lime-based spray dryer FGD while utilizing existing flue gas ductwork and particulate collectors. IDS technology is anticipated to result in a dry desulfurization process with a moderate removal efficiency (50% or greater) for high-sulfur coal-fired boilers. The critical elements for successful application are: (1) adequate mixing of sorbent droplets with flue gas for efficient reaction contact, (2) sufficient residence time to produce a non-wetting product, and (3) appropriate ductwork cross-sectional area to prevent deposition of wet reaction products before particle drying is comple. The ductwork in many older plants, previously modified to meet 1970 Clean Air Act requirements for particulate control, usually meet these criteria. A 12 MW-scale IDS pilot plant was constructed at the Muskingum River Plant of the American Electric Power System. The pilot plant, which operates from a slipstrem attached to the air-preheater outlet duct from the Unit 5 boiler at the Muskingum River Plant (which burns about 4% sulfur coal), is equipped with three atomizer …
Date: November 1, 1989
Creator: Samuel, E. A.; Murphy, K. R. & Demian, A.
Object Type: Report
System: The UNT Digital Library
THE 15 LAYER SILICON DRIFT DETECTOR TRACKER IN EXPERIMENT 896. (open access)

THE 15 LAYER SILICON DRIFT DETECTOR TRACKER IN EXPERIMENT 896.

Large linear silicon drift detectors have been developed and are in production for use in several experiments. Recently 15 detectors were used as a tracking device in BNL-AGS heavy ion experiment (E896). The detectors were successfully operated in a 6.2 T magnetic field. The behavior of the detectors, such as drift uniformity, resolution, and charge collection efficiency are presented. The effect of the environment on the detector performance is discussed. Some results from the experimental run are presented. The detectors performed well in an experimental environment. This is the first tracking application of these detectors.
Date: November 8, 1998
Creator: Pandy, S. U.
Object Type: Article
System: The UNT Digital Library
The 16 August 1997 Novaya Zemlya seismic event as viewed from GSN stations KEV and KBS (open access)

The 16 August 1997 Novaya Zemlya seismic event as viewed from GSN stations KEV and KBS

Using current and historic seismic records from Global Seismic Network stations KEV and KBS, the authors find that S minus P arrival time comparisons between nuclear explosions and the 16 August 1997 seismic event (m{sub b} {approx} 3.6) from near Novaya Zemlya clearly indicate that (relative to KEV) the 16 August event occurred at least 80 km east of the Russian test site. Including S minus P arrival times from KBS constrains the location to beneath the Kara Sea and in good agreement with previously reported locations, over 100 km southeast of the test site. From an analysis of P{sub n}/S{sub n} waveform ratios at frequencies above 4 Hz, they find that the 16 August event falls within the population of regional earthquakes and is distinctly separated from Novaya Zemlya and other northern Eurasian nuclear explosion populations. Thus, given its location and waveform characteristics, they conclude the 16 August event was an earthquake. The 16 August event was not detected at teleseismic distances, and thus, this event provides a good example of the regional detection, location, and identification efforts that will be required to monitor the Comprehensive Test Ban Treaty below m{sub b} {approx} 4.
Date: November 1, 1997
Creator: Hartse, H.E.
Object Type: Report
System: The UNT Digital Library
17.5% p-Type Silicon Heterojunction Solar Cells with HWCVD a-Si:H as the Emitter and Back Contact (open access)

17.5% p-Type Silicon Heterojunction Solar Cells with HWCVD a-Si:H as the Emitter and Back Contact

Thin hydrogenated amorphous silicon (a-Si:H) layers deposited by hot-wire chemical vapor deposition (HWCVD) are used as both emitters and back contacts in silicon heterojunction solar cells. Low interface recombination velocity and high open-circuit voltage are achieved by a low substrate temperature (<150 deg C) intrinsic a-Si:H deposition which ensures immediate amorphous silicon deposition. This is followed by deposition of doped a-Si:H at a higher temperature (>200 deg C) which appears to improve dopant activation. With an i/n a-Si:H emitter, we obtain a confirmed efficiency of 17.1% on textured p-type float-zone (FZ) silicon with a screen-printed aluminum back-surface-field (Al-BSF) contact. Employing a-Si:H as both the front emitter and the back contact, we achieve a confirmed efficiency of 17.5%, the highest reported efficiency for a p-type c-Si based heterojunction solar cell.
Date: November 1, 2005
Creator: Wang, T. H.; Page, M. R.; Iwaniczko, E.; Wang, Q.; Xu,Y.; Yan, Y. et al.
Object Type: Article
System: The UNT Digital Library
N-17, A Delayed Neutron Emitter (open access)

N-17, A Delayed Neutron Emitter

The decay scheme of a 4.2 second neutron emitter has been investigated in detail. Chemical and physical evidence shows that it is N{sup 17}, which emits beta rays to a broad excited state of O{sup 17}, which then breaks up into a neutron plus O{sup 16}. The energy spectrum of the neutrons is determined by measuring the energies of the O{sup 16} recoils in a proportional counter. The neutrons have a most probable energy of 0.9 Mev, a 'half width' of less than .5 Mev, and an upper limit of about 2 Mev. {beta}-recoil coincidences are observed, as predicted by the Bohr-Wheeler theory, and the {beta}-ray energy is measured by absorption. The beta rays in coincidence with neutrons have an upper limit of 3.7 {+-} 0.2 Mev. Beta-rays directly to the ground stat of O{sup 17} are not observed because of high background effects, but should have an energy of 8.7 Mev. Some evidence is presented to show that energy is conserved in the {beta}-n transition through the broad excited state in O{sup 17}.
Date: November 5, 1948
Creator: Alvarez, L. W.
Object Type: Report
System: The UNT Digital Library
17-keV x-ray output of plutonium (open access)

17-keV x-ray output of plutonium

In the production of plutonium in a reactor, plutonium-238, 240, and 241 are formed as well as Pu{sup 239}. It is well known that the specific alpha activity of the plutonium varies as the percentages of these isotopes are changed. Kinderman, et al have worked out the relationship between isotopic content and MWD/ton exposure. Their findings are reported in this document.
Date: November 5, 1958
Creator: McCall, R. C. & Bernard, R. M.
Object Type: Report
System: The UNT Digital Library
20-MW Magnicon for ILC (open access)

20-MW Magnicon for ILC

The 1.3 GHz RF power to drive ILC is now planned to be supplied by 600-1200, 10-MW peak power multi-beam klystrons. In this project, a conceptual design for 1.3 GHz magnicons with 20 MW peak power was developed as an alternative to the klystrons, with the possibility of cutting in half the numbers of high-power tubes and associated components. Design of a conventional magnicon is described, using TM110 modes in all cavities, as well as design of a modified magnicon with a TE111 mode output cavity. The latter has the advantage of much lower surface fields than the TM110 mode, with no loss of output power or electronic efficiency.
Date: November 29, 2006
Creator: Hirshfield, Jay L.
Object Type: Report
System: The UNT Digital Library