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3-dimensional beam scanning system for particle radiation therapy (open access)

3-dimensional beam scanning system for particle radiation therapy

In radiation therapy treatment volumes up to several liters have to be irradiated. Today's charged particle programs use ridge filters, scattering foils, occluding rings collimators and boluses to shape the dose distribution. An alternative approach, scanning of a small diameter beam, is analyzed and tentative systems specifications are derived. Critical components are scheduled for fabrication and testing at LBL.
Date: March 1977
Creator: Leemann, C.; Alonso, J.; Grunder, H.; Hoyer, E.; Kalnins, G.; Rondeau, D. et al.
Object Type: Article
System: The UNT Digital Library

3" relief valves H. P. cylinder

Blueprint depicting technical details of Battleship Texas.
Date: March 13, 1914
Creator: unknown
Object Type: Technical Drawing
System: The Portal to Texas History

3" relief valves spring H.P. cylinder

Blueprint depicting technical details of Battleship Texas.
Date: March 10, 1938
Creator: unknown
Object Type: Technical Drawing
System: The Portal to Texas History
A 3 TeV on 3 TeV proton-proton dedicated collider for Fermilab (open access)

A 3 TeV on 3 TeV proton-proton dedicated collider for Fermilab

The Fermilab Dedicated Collider proposed in May 1983 is a 2 TeV on 2 TeV p)bar p) collider. The expected luminosity is )approximately) 10/sup 31/ cm/sup (minus/2)sec/sup )minus/1) and the estimated cost is )approximately) $362M (FY-83 dollars). Since 1983 both the superconducting magnet and the particle detector technologies have advanced and the countenance of physics, hence the desired characteristics of new facilities have also altered somewhat. We want to show here that with the new magnet technology used for the SSC one can construct a 3 TeV on 3 TeV pp collider on the Fermilab site. This pp Dedicated Collider )PPDC) will have a luminosity of about 10/sub 33/cm/sup )minus/2)sec)sup)minus)1) and a cost only )approximately) 50)percent) more than that of the p)bar p) Dedicated Collider. 3 figs
Date: March 30, 1988
Creator: Teng, L.C.
Object Type: Report
System: The UNT Digital Library
The 4-County News Bulletin (Castroville, Tex.), Vol. 19, No. 48, Ed. 1 Monday, March 6, 1978 (open access)

The 4-County News Bulletin (Castroville, Tex.), Vol. 19, No. 48, Ed. 1 Monday, March 6, 1978

Weekly newspaper from Castroville, Texas that includes local, state, and national news along with extensive advertising.
Date: March 6, 1978
Creator: Schott, Bobbie
Object Type: Newspaper
System: The Portal to Texas History
The 4-County News Bulletin (Castroville, Tex.), Vol. 19, No. 49, Ed. 1 Monday, March 13, 1978 (open access)

The 4-County News Bulletin (Castroville, Tex.), Vol. 19, No. 49, Ed. 1 Monday, March 13, 1978

Weekly newspaper from Castroville, Texas that includes local, state, and national news along with extensive advertising.
Date: March 13, 1978
Creator: Schott, Bobbie
Object Type: Newspaper
System: The Portal to Texas History
The 4-County News Bulletin (Castroville, Tex.), Vol. 19, No. 50, Ed. 1 Monday, March 20, 1978 (open access)

The 4-County News Bulletin (Castroville, Tex.), Vol. 19, No. 50, Ed. 1 Monday, March 20, 1978

Weekly newspaper from Castroville, Texas that includes local, state, and national news along with extensive advertising.
Date: March 20, 1978
Creator: Schott, Bobbie
Object Type: Newspaper
System: The Portal to Texas History
The 4-County News Bulletin (Castroville, Tex.), Vol. 19, No. 51, Ed. 1 Monday, March 27, 1978 (open access)

The 4-County News Bulletin (Castroville, Tex.), Vol. 19, No. 51, Ed. 1 Monday, March 27, 1978

Weekly newspaper from Castroville, Texas that includes local, state, and national news along with extensive advertising.
Date: March 27, 1978
Creator: Schott, Bobbie
Object Type: Newspaper
System: The Portal to Texas History
4-D conformal field theories and strings on orbifolds (open access)

4-D conformal field theories and strings on orbifolds

None
Date: March 16, 1998
Creator: Kachru, Shamit & Silverstein, Eva
Object Type: Article
System: The UNT Digital Library

4" Fuel Oil Suction Strainer - 8 Special Fitting

Blueprint depicting technical details of Battleship Texas.
Date: March 31, 1927
Creator: unknown
Object Type: Technical Drawing
System: The Portal to Texas History

[4-H Group]

Photograph of a group of girls of various ages in a field, with some of them holding booklets with the 4-H logo on the covers.
Date: March 1958
Creator: unknown
Object Type: Photograph
System: The Portal to Texas History

4" Low Pressure Strainer for Fuel Oil [Body & Assembly]

Blueprint depicting technical details of Battleship Texas.
Date: March 28, 1927
Creator: unknown
Object Type: Technical Drawing
System: The Portal to Texas History

4" Low Pressure Strainer for Fuel Oil [Details]

Blueprint depicting technical details of Battleship Texas.
Date: March 28, 1927
Creator: unknown
Object Type: Technical Drawing
System: The Portal to Texas History
4. pi. physics. [/sup 40/Ar + KCl, 0. 4 to 1. 8 GeV/A] (open access)

4. pi. physics. [/sup 40/Ar + KCl, 0. 4 to 1. 8 GeV/A]

Exclusive ..pi../sup -/ and charged-particle production in collisions of /sup 40/Ar on KCl are studied at incident energies from 0.4 to 1.8 GeV/A. The correlation between the ..pi../sup -/ and the total charged particle multiplicity confines the reaction along a narrow ridge with no exotic islands of pion production. For high multiplicities the system reaches the total disintegration of target and projectile into singly charged fragments and pions. Every 200 MeV/A datum was taken with a central and inelastic trigger. For central collisions the mean ..pi../sup -/ multiplicity increases linearly with the bombarding energy with no marked discontinuities due to the ..delta..(3,3) resonance. At 1.8 GeV/A evidence for nonthermal ..pi../sup -/ production in central collisions is found. The total c.m. energy in ..pi../sup -/ shows linear dependence on the ..pi../sup -/ multiplicity with a slope of epsilon = 300 MeV/..pi../sup -/. Strange particle production in the central collision of 1.8 GeV/A Ar on KCl is seen. 8 figures.
Date: March 1, 1980
Creator: Sandoval, A.
Object Type: Article
System: The UNT Digital Library

.5",.75" X 1" Cylinder Relief Valves - American Steam Gauge & Valve Mfg. Co.

Blueprint depicting technical details of Battleship Texas.
Date: March 3, 1914
Creator: unknown
Object Type: Technical Drawing
System: The Portal to Texas History

[5 Alarm Fire at 4810 East Side]

Photograph of a charred building with two ladders leading to the rooftop.
Date: March 1, 1959
Creator: unknown
Object Type: Photograph
System: The Portal to Texas History
The 5- by 7-meter wind tunnel of the DVL (open access)

The 5- by 7-meter wind tunnel of the DVL

The report contains a description of the DVL wind tunnel. According to the cones fixed, an elliptical stream with axes 5 by 7 meters and length 9 meters, or a stream 6 by 8 meters in cross section and 11 meters in length is available. The top speed with the smaller cone is 65 meters per second. The testing equipment consists of an automatic six-component balance and a test rig for propellers and engines up to 650 horsepower.
Date: March 1936
Creator: Kramer, M.
Object Type: Report
System: The UNT Digital Library
6 GeV synchrotron x-ray source: Conceptual design report. Supplement A - characteristics of the insertion devices for the 6 GeV synchrotron source (open access)

6 GeV synchrotron x-ray source: Conceptual design report. Supplement A - characteristics of the insertion devices for the 6 GeV synchrotron source

Historically, synchrotron radiation (SR) has been obtained primarily from bending-magnet (BM) sources. These continuous sources of electromagnetic radiation have contributed in a major way to our understanding of the structure and dynamics of biological, chemical and material systems. During the past few years, newer sources of SR based on sophisticated periodic magnetic structures, called insertion devices (IDs), have been developed. The electromagnetic radiation from these IDs can be used as a very versatile probe in scientific and technological research which is far superior to that based on a BM source.
Date: March 1, 1986
Creator: unknown
Object Type: Report
System: The UNT Digital Library
6 GeV synchrotron x-ray source: Conceptual design report. Supplement B - conceptual design of proposed beam lines for the 6 GeV light source (open access)

6 GeV synchrotron x-ray source: Conceptual design report. Supplement B - conceptual design of proposed beam lines for the 6 GeV light source

In this document, preliminary conceptual designs are presented for ten sample beamlines for the 6 GeV Light Source. These beamlines will accommodate investigations in solid-state physics, materials science, materials technology, chemical technology, and biological and medical sciences. In future, the designs will be altered to include new developments in x-ray optics and hardware technologies. The research areas addressed by the samples beamlines are as follows: Topography and Radiography/Tomography (section 2); Inelastic Scattering with Ultrahigh Energy Resolution (Section 3); Surface and Bulk Studies Using High Momentum Resolution (Section 4); Inelastic Scattering from Charge and Spin (Section 5); Advanced X-Ray Photoelectron Spectroscopy Studies (Section 6); Small Angle X-Ray Scattering Studies (Section 7); General Purpose Scattering for Materials Studies (Section 8); Multiple-Energy Anomalous-Dispersion Studies of Proteins (Section 9); Protein Crystallography (Section 10); Time- and Space-resolved X-Ray Spectroscopy (Section 11); Medical Diagnostic Facility (Section 12); and Transuranium Research Facility (Section 13). The computer systems to be used on the beamlines are also discussed in Section 14 of this document.
Date: March 1, 1996
Creator: unknown
Object Type: Report
System: The UNT Digital Library
6 kv CAPACITOR CHARGING SUPPLY (open access)

6 kv CAPACITOR CHARGING SUPPLY

The power supplies designed and constructed to power high intensity flash tubes used in bubble chamber experiments are briefly described and are accompanied by a schematic diagram of the layout. (D.C.W.)
Date: March 15, 1962
Creator: Miller, D. M.
Object Type: Report
System: The UNT Digital Library
6 kv Capacitor Charging Supply (open access)

6 kv Capacitor Charging Supply

The power supplies designed and constructed to power high intensity flash tubes used in bubble chamber experiments are briefly described and are accompanied by a schematic diagram of the layout. (D.C.W.)
Date: March 15, 1962
Creator: Miller, D. M.
Object Type: Report
System: The UNT Digital Library

6" Standard High Lift Sea Valve Pressures 0 - 100 Lbs.

Blueprint depicting technical details of Battleship Texas.
Date: March 28, 1926
Creator: unknown
Object Type: Technical Drawing
System: The Portal to Texas 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

From Summary: "This report provides an overview of the Small Business Administration's (SBA's) Minority Small Business and Capital Ownership Development Program. Based on upon authorities given to the SBA by Sections 7(j) and 8(a) of the Small Business Act of 1958, as amended, this program is commonly known as the "8(a) Program."
Date: March 18, 2010
Creator: Luckey, J. R.
Object Type: Report
System: The UNT Digital Library
8(a) Program: Fourteen Ineligible Firms Received $325 Million in Sole-Source and Set-Aside Contracts (open access)

8(a) Program: Fourteen Ineligible Firms Received $325 Million in Sole-Source and Set-Aside Contracts

A letter report issued by the Government Accountability Office with an abstract that begins "The Small Business Administration (SBA) helps socially and economically disadvantaged small businesses gain access to federal contracting opportunities through its 8(a) program. To participate, firms must be at least 51 percent owned and controlled by an individual who meets SBA's criteria of socially and economically disadvantaged. The firm must also qualify as a small business. Once certified, 8(a) firms are eligible to receive sole-source and set-aside contracts for up to 9 years. GAO was asked to (1) determine whether ineligible firms are participating in the 8(a) program, (2) proactively test SBA's controls over the 8(a) application process, and (3) determine what vulnerabilities, if any, exist in SBA's fraud prevention system. To identify cases, GAO reviewed SBA data and complaints to GAO's fraud hotline. To perform its proactive testing, GAO created four bogus businesses and applied for 8(a) certification. GAO did not attempt to project the extent of fraud and abuse in the program."
Date: March 30, 2010
Creator: United States. Government Accountability Office.
Object Type: Report
System: The UNT Digital Library