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Texas Attorney General Opinions
764
Technical Report Archive and Image Library
418
National Advisory Committee for Aeronautics Collection
334
World War Two Collection
189
World War Poster Collection
128
World War Two Newsmaps
52
USGS Topographic Map Collection
46
TRAIL Microcard Collection
45
Office of Scientific & Technical Information Technical Reports
39
Government Documents A to Z Digitization Project
27
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Monthly Report of the Attorney General of the State of Texas, Volume 5, Number 9, September 1943
Monthly report documenting orders, opinions, and other legal statements issued by the Office of the Attorney General in Texas.
Date:
October 1943
Creator:
Texas. Attorney-General's Office.
Object Type:
Report
System:
The Portal to Texas History
Monthly Report of the Attorney General of the State of Texas, Volume 5, Number 10, October 1943
Monthly report documenting orders, opinions, and other legal statements issued by the Office of the Attorney General in Texas.
Date:
November 1943
Creator:
Texas. Attorney-General's Office.
Object Type:
Report
System:
The Portal to Texas History
Texas Game and Fish, Volume 1, Number 11, October 1943
Monthly magazine discussing natural resources, parks, hunting and fishing, and other information related to the outdoors in Texas.
Date:
October 1943
Creator:
Texas. Game and Fish Commission.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Texas Game and Fish, Volume 1, Number 5, April 1943
Monthly magazine discussing natural resources, parks, hunting and fishing, and other information related to the outdoors in Texas.
Date:
April 1943
Creator:
Texas. Game and Fish Commission.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Annual Report of the Boy Scouts of America: 1942
Annual report submitted by the Boy Scouts of America to Congress describing highlights from 1942, activities, service reports, honors, finance, organizational leadership, and other information about scouting programs.
Date:
March 25, 1943
Creator:
Boy Scouts of America
Object Type:
Report
System:
The Portal to Texas History
Musical Opening Choruses, Finales and Production Numbers for Soldier Shows
A selection of opening choruses, choral finales, sketches with comedy songs, and miniature musical comedies, mostly excerpted from pre-existing Broadway shows with lyrics adapted to Army, Navy, or Marine Corps themes. Soldiers were encouraged to incorporate these numbers into their own shows, adapting them further as needed, and to use them as inspiration for writing their own original numbers.
Date:
1943
Creator:
Writers and Material Committee of Camp Shows, Inc.
Object Type:
Musical Score/Notation
System:
The UNT Digital Library
Texas Annual Morbidity Report: 1942
The report provides data and information about communicable and reportable diseases in Texas during 1941, broken out by county.
Date:
1943
Creator:
Texas. State Department of Health. Division of Epidemiology.
Object Type:
Report
System:
The Portal to Texas History
Temperature Effect in Homogeneous Pile
Some idealized considerations of the temperature field in the homogeneous pile are given. It is crudely estimated that the effective mean temperature rise of the pile to be used in calculating the k loss is something like 3/4 the rise in temperature of the slurry in passing through the pile.
Date:
December 9, 1943
Creator:
Young, Gale Jay
Object Type:
Report
System:
The UNT Digital Library
The Resonance Absorption Spectrum of Uranium
A model for the capture spectrum of uranium is introduced in which levels occur at 7, 30, 30+D, 30+2D, ..., ev. Gamma ray and neutron widths are derived from the experimental data for values of D between 10 and 25 ev. The constants of the 7 volt level prove to be independent of D. Extrapolation, using the one level formula, gives a capture cross section at (1/40) ev of 4.9 x 10(24) cm2; this number is, however, quite sensitive to the value taken for the resonance activation. Both neutron and gamma ray widths for the higher levels are approximately proportional to D.
Date:
November 24, 1943
Creator:
Dancoff, Sidney M., 1913-1951
Object Type:
Report
System:
The UNT Digital Library
Some Cases of Pile Activity Flattening
Radial flattening of activity in the cores of spherical and cylindrical piles is discussed in connection with pile control and power improvement. Partial flattening as a result of k loss from temperature rise is also considered.
Date:
October 10, 1943
Creator:
Morehouse, N. & Young, G.
Object Type:
Report
System:
The UNT Digital Library
The Contamination of Cooling Water by a P-9 Plant
The following sources of contamination in cooling water of the P-9 plant are considered: (1) Fission recoils, (2) Corrosion of metal, (3) Recoil from aluminum, (4) Induced activity in the water. It is found that for a P-9 plant of 3.5 x 10(4) KW contamination of the river at "X" should not exceed the .1 r criterion unless coating failure occurs. Tables of the amount of coating failure permissible are given as a function of holdup time.
Date:
June 1, 1943
Creator:
Friedman, Francis L. (Francis Lee), 1918-
Object Type:
Report
System:
The UNT Digital Library
The Effect of Fast Fission on k
The importance of fast neutron fission (i.e., fission caused by neutrons before being slowed down) was recognized by Szilard, and calculations similar to the present one have already been carried out by him, Feld, Ashkin, Wheeler, Wigner and others. The purpose of the present paper is to give a general formula for the contribution of fast fission to the multiplication constant, which will include all the cases already considered and will be applicable to more complicated geometries than those considered by the previous writers.
Date:
May 4, 1943
Creator:
Castle, H.; Ibser, H.; Sacher, G. & Weinberg, Alvin Martin, 1915-2006
Object Type:
Report
System:
The UNT Digital Library
On the Multiplication Constant of Homogeneous Mixtures of U with Various Moderators
The following represents a summary of calculations on the multiplication constant of homogeneous mixtures of uranium and different moderators. These calculations were made possible by Fermi's determination of the age of neutrons and by the extrapolation to higher scattering cross-sections of the resonance absorption of uranium as measured by C. Creutz. According to Fermi, the former quantity is 120 sq. cm. The latter is given in the two attached graphs. The first (Fig.1) of these goes as high as a scattering cross-section of 70 x 10-24 cm.2 per uranium atom, and its highest point is taken from a measurement of Cruetz's in which a mixture of U3O8 and graphite was used.
Date:
May 16, 1943
Creator:
Wigner, Eugene Paul, 1902-1995 & Stephenson, J.
Object Type:
Report
System:
The UNT Digital Library
Effect of Temperature on the Resonance Absorption of Neutrons by Uranium
The resonance absorption of uranium for neutrons has been investigated between 20 degree C and 1000 degree C. Experiments were caried out on both UO2, density 4.63, and metal. The resonance activity was measured with respect to that of an iodine monitor at several different temperatures and the ratio of activity at temperature T to that at 20 degree C was determined. The increase in activity is 0.9 per cent per 100 degree C for the oxide and 1.1 percent per 100 degree C for the metal. The period of U239 was found to be 23.54 +- 0.05 min.
Date:
April 22, 1943
Creator:
Mitchell, Allan C. G. (Allan Charles Gray), 1902-; Slotin, Louis; Marshall, John; Nedzel, V. A.; Brown, L. J. & Pruett, John R.
Object Type:
Report
System:
The UNT Digital Library
Radioactivity of the Cooling Water
The most important source of radioactivity at the exit manifold of the pile will be due to O19, formed by neutron absorption of O18. A recent measurement of Fermi and Weil permits to estimate that it will be safe to stay about 80 minutes daily close to the exit manifolds without any shield. Estimates are given for the radioactivities from other sources -- both in the neighborhood and farther away from the pile.
Date:
March 1, 1943
Creator:
Wigner, Eugene Paul, 1902-1995.
Object Type:
Report
System:
The UNT Digital Library
Temperature Coefficient of the Reproduction Factor for Different Lattice Arrangements
The temperature coefficient is calculated for various lattice arrangements, taking into account the variation of [formula], suggested by Fermi. Four contributions are included: leakage, levelling of the dip in thermal neutron density in the lump, resonance absorption, and hardening of the neutrons as they penetrate a metal lump. The departure of neutron temperature from lattice temperature decreases the total coefficient. Values are given for 3 typical piles; in general, the larger the uranium elements, the less stable the pile. A rod lattice tends to be more stable. A pile with metal lumps over 50 lbs. will be unstable.
Date:
February 10, 1943
Creator:
Morrison, P.
Object Type:
Report
System:
The UNT Digital Library
Effective Temperature of Neutrons in a Lattice
The average energies of neutrons emitted from a graphite column at 22 degrees C were compared by measurement of the cross section of boron for neutrons which are stopped by cadmium. At a distance from the neutron source great enough to insure that the neutrons were in thermal equilibrium the average energies of the emerging neutrons were found to be proportional to the temperature within the limits of the experimental error. A measurement made with boron absorbers which had been thus standardized in the graphite column indicated neutrons emerging from the chain reacting pile to have an average temperature approximate 60 +- 50 degrees above that of thermal neutrons emerging from the graphite column at 22 degrees C. Such a measurement made inside the chain reacting pile indicated the average temperature of neutrons therein to be about 65 degrees +- 15 degrees above the average temperature of neutrons in the graphite column.
Date:
February 10, 1943
Creator:
Woods, L.
Object Type:
Report
System:
The UNT Digital Library
Low-Density UO2 Pile
The multiplication factor and minimum pile size for a multiplying pile using UO2 powder of density 1 have been computed. It appears that a k of 1.0177 is possible for a volume ration of V/V001=3.33.
Date:
February 24, 1943
Creator:
Ibser, H. W.
Object Type:
Report
System:
The UNT Digital Library
Chain Reaction of Pure Fissionable Materials in Solution
The critical mass of 94-239 and the corresponding critical dimensions of homogeneous mixtures of 94-239 with various moderating media been calculated as a function of the concentration of 94. A simple transformation makes the figures applicated to92-235. the results are in essential agreement with the preliminary estimated made independently by Oppenheimer and Serber. The problem of the stability of a chain reaction in solution and questions of protection are discussed.
Date:
January 1, 1943
Creator:
Christy, Robert F., 1916-2012 & Wheeler, John Archibald, 1911-2008
Object Type:
Report
System:
The UNT Digital Library
Studies on the Determination of Carbon by the Low Pressure Combustion Method
Technical report: The apparatus for the low pressure combustion method of determining carbon in iron and steel has be redesigned to increase the speed of manipulation. It has been tested by running several thousand determinations and found to yield results in good agreement with Wooten's form of the apparatus. A detailed description of the equipment and its manipulation is given together with an account of experimental studies on the method. Results are also shown for the carbon content of copper.
Date:
October 20, 1943
Creator:
Murray, W M., Jr. & Ashley, S E. Q.
Object Type:
Report
System:
The UNT Digital Library
Metallurgical Laboratory, Chemical Research - Analytical, Graphite Purity Research Program
Abstract. Chemical analytical studies of graphite raw materials have revealed new sources of petroleum cokes and pitches of greater purity than those previously used in the manufacture of project graphite. The use of these raw materials of exceptional purity has resulted in an improvement in k of the order of one per cent as compared with the AGOT-AGNT graphite typical of the previous production. A study of the graphitizing process has shown that no dangerous impurities are introduced in the graphite in manufacture; rather, the process actually purifies. furthermore, impurities are distributed homogeneously within the furnace charge; thus the AGOT-AGNT distinction is no longer necessary. A comparison of the methods of graphite testing has demonstrated excellent correlations between chemical analytical data, the results of the function test at Argonne, and the sigma pile experiments. It may therefore be inferred that chemical testing should be an adequate control of the graphite purity. Methods are described for the analysis of ash, B, V, TI, FE, and Ca in petroleum coke, pitch, and graphite.
Date:
December 22, 1943
Creator:
Boyd, G. E.; Curtis, R. E. & Johnston, W. H.
Object Type:
Report
System:
The UNT Digital Library
Metallurgical Laboratory, Chemical Research - Radiation Chemistry, Errara for CC-918
Technical report listing the errata for pages 2, 4, 5, 6, 7, and 8 for report CC-918.
Date:
October 16, 1943
Creator:
Franck, J.
Object Type:
Report
System:
The UNT Digital Library
Chemical Research -- U233 Production and Extraction; Report for the Month Ending June 21, 1943
Abstract. The precipitation of Pa233 with MnO2 from a solution of thorium nitrate has been studied in some detail and seems quite satisfactory up to 36 gm Th(HO3)4 4H2O per 100 cc solution. The concentration of Pa233 with respect to the manganese dioxide carrier and the thorium precipitated with the carrier appears to be accomplished quite well by either a series of MnO2 cycles or thorium iodate cycles. Volatility methods for both the separation of Pa233 from the original thorium and for its separation from MnO2 are now under investigation. It has been decided that thorium carbonate will the the thorium compound used in the pile at Site X.
Date:
June 21, 1943
Creator:
Franck, J.
Object Type:
Report
System:
The UNT Digital Library
Metallurgical Laboratory, Chemical Research - Radiation Chemistry, Report for the Month Ending May 15, 1943
Technical report that information has bee obtained on the effect of beta and gamma radiation on the electrical resistance of insulating materials The results are summarized. The recovery to original resistance values has been measured. In general, the initial rate is rapid for the first few hours; the rate then decreases sharply. Certain samples show evidence of complete recovery. Effects on mechanical properties of several plastics has also been studied. Data on gas evolution from several organic materials including those suggested by the physiological shield have been extended to include both beta and deuteron bombardments. Samples of "Press-wood" are being evaluated. The effect of current on the H2O2 production in water containing I- has been studied at several I- concentrations. Water contain-dissolved CO2 shows the presence of oxidant (presumably H2O2). H2O2 has been produced by recoil protons from the scattering of fast neutrons in de-oxygenated water. Radioactive solutions do not greatly affect the applicability the glass electrode providing the electrode is thoroughly washed with distilled water before immersion in the standard buffer solution.
Date:
May 15, 1943
Creator:
Franck, J.
Object Type:
Report
System:
The UNT Digital Library