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1,798 Matching Results
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Effects of gamma-ray irradiation on M1 propellant
Samples of M1 single-base propellant were exposed to 10{sup 5}, 10{sup 6}, and 10{sup 7}r of Co{sup 60} gamma rays. Burning rates were determined over a pressure range of 600 to 2600 psi at -40{degrees}, 21{degrees}, and 71{degrees}C. A statistical study indicated no significant change in the burning rate and a small but statistically significant increase (6%) in the exponential factor n after the 10{sup 7}r dose. Visible deterioration resulted, as the color changed from yellow to dark brown and the surface became uneven. In view of these marked visible effects, the slight change in burning rate is surprising. One sample exposed to 5 {times} 10{sup 8}r showed severe blistering, swelling, and contraction, and embrittlement causing fracture. Nitrogen Taliani tests conducted at 110{degrees}C indicated that the decomposition rate is decreased by exposure to 10{sup 5}r, is decreased less by 10{sup 6}r, and remains unchanged after 10{sup 7}r exposure. Chemical analysis showed that the percentage of 2-nitrodiphenylamine increases with dose by a factor of 7 at 10{sup 7}r, while, at the same time, the nitrogen content of the nitrocellulose decreases with increasing dose. This indicates that a substantial part of the nitrocellulose decomposition product had reacted with the diphenylamine stabilizer. It …
Date:
April 1, 1964
Creator:
Abel, J.E.; Mapes, J.E. & Levy, P.W.
Object Type:
Report
System:
The UNT Digital Library
[Letter from Benedict and Ada Abreu to I. H. and Henrietta Leonora Kempner, April 1, 1964]
Letter from Benedict and Ada Abreu to I. H. and Henrietta Kempner thanking them for their "sponsorship of the Spring Kempner Lectureship" and inviting them to a reception at their house in honor of Dr. Karl Bucher.
Date:
April 1, 1964
Creator:
Abreu, Benedict E. & Abreu, Ada
Object Type:
Letter
System:
The Portal to Texas History
Strontium 90-Fueled Thermoelectric Generator Power Source for Five-Watt U.S. Coast Guard Light Buoy
None
Date:
April 1, 1964
Creator:
Addendum, I.; Nichols, W. K., Jr. & McDonald, W. A.
Object Type:
Report
System:
The UNT Digital Library
PRELIMINARY SAFETY ANALYSIS REPORT--LOFT FACILITY
None
Date:
April 1, 1964
Creator:
Ahrens, F.W.; Dinneen, G.A. & Fletcher, R.D. et al--Waage, J.M. ed.
Object Type:
Report
System:
The UNT Digital Library
Current Study 11, Chapter 5. Communist Activities in Latin America
This booklet is the fifth chapter of a training course developed for Air Force Reserve personnel about the Cold War's impact on world affairs. This chapter "is intended to show how the Communists have attempted to subvert the Latin American nations as a step toward the avowed Communist goal of world domination, and to show how the United States and other American Republics are meeting the perilous Communist threat" (p. 1). This booklet includes background information, analysis, review questions, and a list of readings for further study.
Date:
April 1964
Creator:
Air University (U.S.)
Object Type:
Pamphlet
System:
The Portal to Texas History
Current Study 11, Chapter 6. The New Spain
This booklet is the first chapter of a training course developed for Air Force Reserve personnel about the Cold War's impact on world affairs. This chapter "reviews the new Spain with respect to recent developments in the regime of General Franco, Spain's part in the cold war, present trends in Spanish government, and Spain's stature as a respected nation in the world community" (p. 2). This booklet includes background information, analysis, review questions, and a list of readings for further study.
Date:
April 1964
Creator:
Air University (U.S.)
Object Type:
Pamphlet
System:
The Portal to Texas History
[2012.201.B0414.0108]
Photograph is of a man dressed in a baseball uniform and hat swinging a bat. Caption: "Al Ferrera, L A Dodgers."
Date:
April 15, 1964
Creator:
Albright, Bob
Object Type:
Photograph
System:
The Gateway to Oklahoma History
N-Reactor co-product target element rupture detection study
At present there seem to be some uncertainties concerning the needs of rupture detection for the co-producer programs Also in question is the method by which ruptures of the target elements should be detected and located. The purpose of this report is to discuss the waste and hazard control of tritium (H{sup 3}) (the product of the co-producer program), which will determine rupture detection needs, and to discuss methods by which rupture detection and location may be accomplished. The scope of the report considers first, adaptation of the present rupture monitoring system, and second, monitoring systems using H{sup 3} analyzers, together with the costs and time required to develop and use each method of rupture detection.
Date:
April 27, 1964
Creator:
Allred, D. O.
Object Type:
Report
System:
The UNT Digital Library
[Letter from Arthur M. Alpert to Cecile B. Kempner, April 6, 1964]
Letter from Arthur M. Alpert to Cecile B. Kempner replying that it was not an inconvenience to send him the checks.
Date:
April 6, 1964
Creator:
Alpert, Arthur M.
Object Type:
Letter
System:
The Portal to Texas History
[Letter from Arthur M. Alpert to Cecile B. Kempner, April 22, 1964]
Letter from Arthur M. Alpert to Cecile B. Kempner discussing the checks that arrived and deposited into her account
Date:
April 22, 1964
Creator:
Alpert, Arthur M.
Object Type:
Letter
System:
The Portal to Texas History
[Letter from Arthur M. Alpert to Equitable Life Assurance Society of the United States, April 28, 1964]
Letter from Arthur M. Alpert to The Equitable Life Assurance Society of the United States informing that Kempner has not received the two checks and asks if the checks were sent.
Date:
April 28, 1964
Creator:
Alpert, Arthur M.
Object Type:
Letter
System:
The Portal to Texas History
[Letter from Arthur M. Alpert to Harris L. Kempner Jr., April 8, 1964]
Letter from Arthur M. Alpert to Harris L. Kempner, Jr. asking about John Deere.
Date:
April 8, 1964
Creator:
Alpert, Arthur M.
Object Type:
Letter
System:
The Portal to Texas History
[Letter from Arthur M. Alpert to Henry Clark, April 20, 1964]
Letter from Arthur M. Alpert to Henry Clark enclosing several important documents relating to Mr. Harris L. Kempner's business dealings.
Date:
April 20, 1964
Creator:
Alpert, Arthur M.
Object Type:
Letter
System:
The Portal to Texas History
[Letter from Arthur M. Alpert to Lyda Quinn, April 13, 1964]
Letter from Arthur M. Alpert to Lyda Quinn informing about keeping the gift certificate covering the shares of Sugarland Industries, Inc gifted by latter's father in his vault box.
Date:
April 13, 1964
Creator:
Alpert, Arthur M.
Object Type:
Letter
System:
The Portal to Texas History
[Letter from Arthur M. Alpert to Robert H. Albright, April 14, 1964]
Letter from Arthur M. Alpert to Robert H. Albright enclosing something he may find of interest.
Date:
April 14, 1964
Creator:
Alpert, Arthur M.
Object Type:
Letter
System:
The Portal to Texas History
One Dimensional Transport Calculations of Self Shielding Factors for in-Pile Capsule Tests.
None
Date:
April 27, 1964
Creator:
Alwang, W. G. & Krause, J.
Object Type:
Report
System:
The UNT Digital Library
Southwest Retort, Volume 16, Number 8, April 1964
This publication of the Dallas-Fort Worth Section of the American Chemical Society includes information about research, prominent scientist, organizational business, and various other stories of interest to the community. Published monthly during long academic semesters.
Date:
April 1964
Creator:
American Chemical Society. Dallas/Fort Worth Section.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
X-Ray Fluorescence Tables: Ethylenediamine Dextrotartrate (Eddt) Crystal
None
Date:
April 24, 1964
Creator:
Amsbury, W. P.; Lee, W. W.; Rowan, J. H. & Walden, G. E.
Object Type:
Report
System:
The UNT Digital Library
X-RAY FLUORESCENCE TABLES: GYPSUM CRYSTAL
None
Date:
April 24, 1964
Creator:
Amsbury, W. P.; Lee, W. W.; Rowan, J. H. & Walden, G. E.
Object Type:
Report
System:
The UNT Digital Library
X-RAY FLUORESCENCE TABLES: LITHIUM FLUORIDE CRYSTAL
None
Date:
April 24, 1964
Creator:
Amsbury, W. P.; Lee, W. W.; Rowan, J. H. & Walden, G. E.
Object Type:
Report
System:
The UNT Digital Library
X-Ray Fluorescence Tables: Mica-48 Crystal
None
Date:
April 24, 1964
Creator:
Amsbury, W. P.; Lee, W. W.; Rowan, J. H. & Walden, G. E.
Object Type:
Report
System:
The UNT Digital Library
X-RAY FLUORESCENCE TABLES: MICA-80 CRYSTAL
None
Date:
April 24, 1964
Creator:
Amsbury, W. P.; Lee, W. W.; Rowan, J. H. & Walden, G. E.
Object Type:
Report
System:
The UNT Digital Library
X-RAY FLUORESCENCE TABLES: POTASSIUM ACID PHTHALATE (KAP) CRYSTAL
None
Date:
April 24, 1964
Creator:
Amsbury, W. P.; Lee, W. W.; Rowan, J. H. & Walden, G. E.
Object Type:
Report
System:
The UNT Digital Library
X-RAY FLUORESCENCE TABLES: TOPAZ CRYSTAL
None
Date:
April 24, 1964
Creator:
Amsbury, W. P.; Lee, W. W.; Rowan, J. H. & Walden, G. E.
Object Type:
Report
System:
The UNT Digital Library