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72,043 Matching Results

Start Over Access Open Access Day 5th Language English

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Results: 1 - 24 of 72,043 next
Best Match Title Creator Date Created (Newest) Date Created (Oldest) Date Added (Newest) Date Added (Oldest)
1.5-GEV FFAG ACCELERATOR AS INJECTOR TO THE BNL-AGS. (open access)

1.5-GEV FFAG ACCELERATOR AS INJECTOR TO THE BNL-AGS.

A 1.5-GeV Fixed-Field Alternating-Gradient (FFAG) proton Accelerator is being studied as a new injector to the Alternating-Gradient Synchrotron (AGS) of Brookhaven National Laboratory (BNL). The major benefit is that it would considerably shorten the overall AGS acceleration cycle, and, consequently, may yield to an improvement of beam stability, intensity and size. The AGS-FFAG will also facilitate the proposed upgrade of the AGS facility toward a 1-MW average proton beam power at the top energy of 28 GeV. This paper describes the FFAG design for acceleration of protons from 400 MeV to 1.5 GeV, with the same circumference of the AGS, and entirely housed in the AGS tunnel.
Date: July 5, 2004
Creator: Ruggiero, A. G.; Blaskiewicz, M.; Trbojevic, D.; Tsoupas, N. & Zhang, W.
Object Type: Article
System: The UNT Digital Library
01-ERD-111 - The Development of Synthetic High Affinity Ligands (open access)

01-ERD-111 - The Development of Synthetic High Affinity Ligands

The aim of this project was to develop Synthetic High-Affinity Ligands (SHALs), which bind with high affinity and specificity to proteins of interest for national security and cancer therapy applications. The aim of producing synthetic ligands for sensory devices as an alternative to antibody-based detection assays and therapeutic agents is to overcome the drawbacks associated with antibody-based in next-generation sensors and systems. The focus area of the project was the chemical synthesis of the SHALs. The project concentrated on two different protein targets. (a) The C fragment of tetanus and botulinum toxin, potential biowarfare agents. A SHAL for tetanus or botulinum toxin would be incorporated into a sensory device for the toxins. (b) HLA-DR10, a protein found in high abundance on the surface of Non-Hodgkins Lymphoma. A SHAL specific to a tumor marker, labeled with a radionuclide, would enable the targeted delivery of radiation therapy to metastatic disease. The technical approach used to develop a SHAL for each protein target will be described in more detail below. However, in general, the development of a SHAL requires a combination of computational modeling techniques, modern nuclear magnetic resonance spectroscopy (NMR) and synthetic chemistry.
Date: February 5, 2004
Creator: Perkins, J; Balhorn, R; Cosman, M; Lightstone, F & Zeller, L
Object Type: Report
System: The UNT Digital Library
1 MeV electron irradiation of solid Xe nanoclusters in Al : an in-situ HRTEM study. (open access)

1 MeV electron irradiation of solid Xe nanoclusters in Al : an in-situ HRTEM study.

Thin film samples of a simple embedded nanocluster system consisting of solid Xe precipitates in Al have been subjected to 1 MeV electron irradiation in a high-voltage electron microscope. High-resolution images have been recorded on videotape in order to monitor the changes to the system resulting from the passage of electrons through the film. Inspection of the video recordings (in some cases frame-by-frame) reveals that complex, rapid processes occur under the electron beam. These include, movement of small clusters, coalescence of neighboring clusters, shape changes, the apparent melting and resolidification of the Xe, and the creation and annealing of extended defects within the Xe lattice. A tentative interpretation of some of the observations is presented in terms of the electron-induced displacement processes at the surface of the clusters.
Date: December 5, 1997
Creator: Donnelly, S. E.; Furuya, K.; Song, M.; Birtcher, R. C. & Allen, C. W.
Object Type: Article
System: The UNT Digital Library
3"/50 cal.AA battery control from MK.51 directors FC circuits "GH" &"3U" isometric wiring diag.

3"/50 cal.AA battery control from MK.51 directors FC circuits "GH" &"3U" isometric wiring diag.

Blueprint depicting technical details of Battleship Texas.
Date: October 5, 1944
Creator: unknown
Object Type: Technical Drawing
System: The Portal to Texas History
The 4-County News Bulletin (Castroville, Tex.), Vol. 19, No. 22, Ed. 1 Monday, September 5, 1977 (open access)

The 4-County News Bulletin (Castroville, Tex.), Vol. 19, No. 22, Ed. 1 Monday, September 5, 1977

Weekly newspaper from Castroville, Texas that includes local, state, and national news along with extensive advertising.
Date: September 5, 1977
Creator: Schott, Bobbie
Object Type: Newspaper
System: The Portal to Texas History
The 4-County News Bulletin (Castroville, Tex.), Vol. 19, No. 35, Ed. 1 Monday, December 5, 1977 (open access)

The 4-County News Bulletin (Castroville, Tex.), Vol. 19, No. 35, Ed. 1 Monday, December 5, 1977

Weekly newspaper from Castroville, Texas that includes local, state, and national news along with extensive advertising.
Date: December 5, 1977
Creator: Schott, Bobbie
Object Type: Newspaper
System: The Portal to Texas History
The 4-County News Bulletin (Castroville, Tex.), Vol. 20, No. 9, Ed. 1 Monday, June 5, 1978 (open access)

The 4-County News Bulletin (Castroville, Tex.), Vol. 20, No. 9, Ed. 1 Monday, June 5, 1978

Weekly newspaper from Castroville, Texas that includes local, state, and national news along with extensive advertising.
Date: June 5, 1978
Creator: Schott, Bobbie
Object Type: Newspaper
System: The Portal to Texas History
A 4 to 0.1 nm FEL Based on the SLAC Linac (open access)

A 4 to 0.1 nm FEL Based on the SLAC Linac

The author show that using existing electron gun technology and a high energy linac like the one at SLAC, it is possible to build a Free Electron Laser operating around the 4 nm water window. A modest improvement in the gun performance would further allow to extend the FEL to the 0.1 nm region. Such a system would produce radiation with a brightness many order of magnitude above that of any synchrotron radiation source, existing or under construction, with laser power in the multigawatt region and subpicosecond pulse length.
Date: June 5, 2012
Creator: Pellegrini, C.
Object Type: Article
System: The UNT Digital Library
5" gun Ammunition Hoists - Relocation of Dogs & Additional Protective Plating

5" gun Ammunition Hoists - Relocation of Dogs & Additional Protective Plating

Blueprint depicting technical details of Battleship Texas.
Date: April 5, 1926
Creator: unknown
Object Type: Technical Drawing
System: The Portal to Texas History
8" Pressure Regulating Valve - Low Pressure Distilling Plant

8" Pressure Regulating Valve - Low Pressure Distilling Plant

Blueprint depicting technical details of Battleship Texas.
Date: August 5, 1925
Creator: unknown
Object Type: Technical Drawing
System: The Portal to Texas History
9/11 Terrorism: Global Economic Costs (open access)

9/11 Terrorism: Global Economic Costs

The 9/11 attacks were part of Al Qaeda’s strategy to disrupt Western economies and impose both direct and secondary costs on the United States and other nations. The immediate costs were the physical damage, loss of lives and earnings, slower world economic growth, and capital losses on stock markets. Indirect costs include higher insurance and shipping fees, diversion of time and resources away from enhancing productivity to protecting and insuring property, public loss of confidence, and reduced demand for travel and tourism. In a broader sense, the 9/11 attacks led to the invasions and occupations of Afghanistan and Iraq (and the Global War on Terrorism) and perhaps emboldened terrorists to attack in Bali, Spain, Morocco, and Saudi Arabia. A policy question for Congress is how to evaluate the costs and benefits of further spending to counter terrorism and its economic impact.
Date: October 5, 2004
Creator: Nanto, Dick K.
Object Type: Report
System: The UNT Digital Library
9 Days of DART Reveals a Treasure of Destinations and Deals (open access)

9 Days of DART Reveals a Treasure of Destinations and Deals

News release about advertising the use of DART's destination deals, offering discounts at travel destinations near DART rail stations or along connecting streetcar routes, over Spring Break.
Date: March 5, 2003
Creator: Lyons, Morgan
Object Type: Text
System: The Portal to Texas History
10 CFR 850 Implementation of Requirements (open access)

10 CFR 850 Implementation of Requirements

10 CFR 850 defines a contractor as any entity, including affiliated entities, such as a parent corporation, under contract with DOE, including a subcontractor at any tier, with responsibility for performing work at a DOE site in furtherance of a DOE mission. The Chronic Beryllium Disease Prevention Program (CBDPP) applies to beryllium-related activities that are performed at the Lawrence Livermore National Laboratory (LLNL). The CBDPP or Beryllium Safety Program is integrated into the LLNL Worker Safety and Health Program and, thus, implementation documents and responsibilities are integrated in various documents and organizational structures. Program development and management of the CBDPP is delegated to the Environment, Safety and Health (ES&H) Directorate, Worker Safety and Health Functional Area. As per 10 CFR 850, Lawrence Livermore National Security, LLC (LLNS) periodically submits a CBDPP to the National Nuclear Security Administration/Livermore Site Office (NNSA/LSO). The requirements of this plan are communicated to LLNS workers through ES&H Manual Document 14.4, 'Working Safely with Beryllium.' 10 CFR 850 is implemented by the LLNL CBDPP, which integrates the safety and health standards required by the regulation, components of the LLNL Integrated Safety Management System (ISMS), and incorporates other components of the LLNL ES&H Program. As described in …
Date: January 5, 2012
Creator: Lee, S.
Object Type: Report
System: The UNT Digital Library
10 (micro)m and 5 (micro)m Pinhole-Assisted Point-Projection Backlit Imaging for NIF (open access)

10 (micro)m and 5 (micro)m Pinhole-Assisted Point-Projection Backlit Imaging for NIF

Pinhole-assisted point-projection backlighting with 10{micro}m and 5 {micro}m pinholes placed a small distance of order 1 mm away from the backlighter produces images with large field of view and high resolution. Pinholes placed closely to high-power backlighter sources can vaporize and close due to x-ray driven ablation, thereby limiting the usefulness of this method. A study of streaked 1-D backlit imaging of 25 {micro}m W wires using the OMEGA laser is presented. The pinhole closure timescale for 10 {micro}m pinholes placed 0.45 mm and 1 mm distant from the backlighter is 1.3 ns and 2.2 ns, respectively. Similar timescales for 5 {micro}m pinholes is also presented. Successful wire imaging prior to pinhole closure is clearly demonstrated.
Date: June 5, 2001
Creator: Bullock, A. B.; Landen, O. L. & Bradley, D. K.
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
A 30 ps Timing Resolution for Single Photons with Multi-pixel Burle MCP-PMT (open access)

A 30 ps Timing Resolution for Single Photons with Multi-pixel Burle MCP-PMT

We have achieved {approx}30 psec single-photoelectron and {approx}12ps for multi-photoelectron timing resolution with a new 64 pixel Burle MCP-PMT with 10 micron microchannel holes. We have also demonstrated that this detector works in a magnetic field of 15kG, and achieved a single-photoelectron timing resolution of better than 60 psec. The study is relevant for a new focusing DIRC RICH detector for particle identification at future Colliders such as the super B-factory or ILC, and for future TOF techniques. This study shows that a highly pixilated MCP-PMT can deliver excellent timing resolution.
Date: July 5, 2006
Creator: Va'vra, J.; Benitez, J.; Coleman, J.; Leith, D. W. G. S.; Mazaheri, G.; Ratcliff, B. et al.
Object Type: Article
System: The UNT Digital Library
40 acres block Lot 426 on Taylor Boulevard pavement connecting to Mission and McAllen and all other parts of the Valley

40 acres block Lot 426 on Taylor Boulevard pavement connecting to Mission and McAllen and all other parts of the Valley

Panoramic photograph of a field ready for farming in Mission, Texas. There are surveyors standing on the left, farm house and cars shown on the right.
Date: August 5, 1929
Creator: Gardner, J. W.
Object Type: Photograph
System: The Portal to Texas History
45-Day safety screen results for tank 241-U-202, push mode, cores 75 and 78 (open access)

45-Day safety screen results for tank 241-U-202, push mode, cores 75 and 78

This document is a report of the analytical results for samples collected from the radioactive wastes in Tank 241-U-202 at the Hanford Reservation. Core samples were collected from the solid wastes in the tank and underwent safety screening analyses including differential scanning calorimetry, thermogravimetric analysis, and total alpha analysis. Results indicate that no safety screening notification limits were exceeded.
Date: May 5, 1995
Creator: Jo, J.
Object Type: Report
System: The UNT Digital Library
45-Day safety screen results for tank 241-U-203, push mode, cores 79 and 80 (open access)

45-Day safety screen results for tank 241-U-203, push mode, cores 79 and 80

Two one-segment core samples from tank 241-U-203 (U-203) were received by the 222-S Laboratories and underwent safety screening analysis, consisting of differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and total alpha activity. In addition to the safety screening requirements, inductively coupled plasma (ICP) spectrographic analysis for lithium was performed to determine the extent of hydrostatic head fluid contamination during the sampling event. No notification limits were exceeded for these analyses.
Date: May 5, 1995
Creator: Schreiber, R. D.
Object Type: Report
System: The UNT Digital Library
60-day waste compatibility safety issues and final results for TX-244 grab samples (open access)

60-day waste compatibility safety issues and final results for TX-244 grab samples

Three grab samples (244-TX-96-1, 244-TX-96-2, and 244-TX-96-3) were taken from Riser 8 of Tank 241-TX-244 on October 18, 1996, and received by 222-S Laboratory on October 18, 1996. These samples were analyzed in accordance with Compatibility Grab Sampling and Analysis Plan (TSAP) and Data Quality Objectives for Tank Farms Waste Compatibility Program (DQO) in support ofthe Waste Compatibility Program. Notifications were made in accordance with TSAP for pH and OH- analyses. Upon further review, the pH notification was deemed unnecessary, as the notification limit did not apply to this tank.
Date: February 5, 1997
Creator: Nuzum, J. L.
Object Type: Report
System: The UNT Digital Library
62-TeV center of mass hadron collider with superbunch beams (open access)

62-TeV center of mass hadron collider with superbunch beams

The scheme of a 62-TeV center of mass p-p collider with superbunch beams at Fermilab is proposed as a practical and realistically achievable future project. It will be built in two stages, using the same tunnel, first with a 2 Tesla low field magnet collider ring and later with a 10 Tesla high field magnet collider ring. Both low and high field magnets have twin bore aperture and will be installed in the tunnel with the circumference of 87.25 km. In each bore a proton beam is accelerated, using induction cavities to increase luminosity. In the first stage they install a 7 TeV accelerator ring with operating field of 2 Tesla, based on the superferric transmission-line design. This ring will be operated at a 14-TeV center of mass collider. This will have the same energy as the LHC, but it will have 15 times higher luminosity, namely 1.5 x 10{sup 35}/cm{sup 2}/sec. The estimated synchrotron radiation is negligible with this machine. The existing Fermilab accelerator system, including the 150 GeV main injector, will be used as the injector system. Its rough cost estimation and schedule for this first stage are presented. In the second stage proton beams are accelerated, also …
Date: November 5, 2001
Creator: al., Ryuji Yamada et
Object Type: Article
System: The UNT Digital Library
80 HP PLASMA ASSISTED CATALYST SYSTEM (open access)

80 HP PLASMA ASSISTED CATALYST SYSTEM

The US economy is linked to efficient heavy vehicle transportation and diesel remains the fuel of choice for mass transportation of goods and services. Diesel engines remain the most reliable and cost effective system for commerce. Recent deleterious effects of diesel exhaust on health and environment have led to an urgent need for cost effective technologies that would bring about reduction in NOx and PM. CARB estimates on-road diesel mobile source will contribute almost 50% NOx and 78% PM emissions by 2010. As a result recent Federal and State mandates have been adopted to reduce emissions from diesel exhaust to 1 Gm/bhp.-Hr of NOx and 0.05 Gm/bhp-hr of PM by the year 2007. The 2007 standard is to be achieved in a stepwise manner starting with the standards for 2002 namely 2 Gm/bhp-hr NOx and 0.1 Gm/bhp-hr of PM. 2002 standards are likely to be met by most engine manufacturer by some modified form of exhaust gas recirculation (EGR) system or by employing a sophisticated engine control system. Importance of cost effective technology requirement is further exaggerated by the fact that in recent years diesel engine production have increased dramatically see figure 1 and has out stripped the gasoline engine …
Date: August 5, 2001
Creator: Slone, Ralph
Object Type: Article
System: The UNT Digital Library
100 Areas: (For technical progress letter No. 104), June 25--July 1 (open access)

100 Areas: (For technical progress letter No. 104), June 25--July 1

None
Date: July 5, 1946
Creator: Jordan, W. E.
Object Type: Report
System: The UNT Digital Library