Collection
Technical Report Archive and Image Library
973
National Advisory Committee for Aeronautics Collection
557
Office of Scientific & Technical Information Technical Reports
548
TRAIL Microcard Collection
243
Texas Attorney General Opinions
158
Government Documents A to Z Digitization Project
21
Texas State Publications
18
USDA Farmers' Bulletins
11
Serial/Series Title
NACA Research Memorandums
340
NACA Technical Notes
190
Atomic Energy Commission Reports
135
United States Geological Survey Reports
90
Hanford Works Reports
61
Trace elements investigations report
52
HW (Series)
42
University of California Radiation Laboratory Reports
42
Oak Ridge National Laboratory Reports
30
BMI (Series)
24
78 More
States
1,718 Matching Results
Results open in a new window/tab.
Results:
1 - 24 of
1,718
next
1. K+ Charge Exchange - Search For K+ Charge Exchange
An experiment was designed utilizing a charge-exchange reaction to study the decay and interactions of the neutral K mesons produced. The experiment produced no events that could be interpreted as either the decay or interaction of neutral K mesons. The nature of the experiment and the possible explanations of this unexpected result are presented in this paper.
Date:
July 29, 1959
Creator:
Birge, Robert W.; Courant, Hans J.; Lanou, Robert E., Jr. & Whitehead, Marian N.
Object Type:
Report
System:
The UNT Digital Library
20,000 KW Nuclear Power Plant Study for United States Atomic Energy Commission
Introduction: In September of 156, Gilbert Associates, Inc., entered into a contract with the United States of America, acting through the United States Atomic Energy Commission, for the study and preliminary design of a nuclear power plant being considered for integration into a central station power system at an overseas site.
Date:
July 7, 1957
Creator:
Gilbert Associates, Inc.
Object Type:
Report
System:
The UNT Digital Library
100 Areas water treatment specifications
This memorandum discussed review of the data from tests using alum in the treatment of pile process water, and using activated silica as a coagulant aid during period of low water temperature, which shows that this method should be substituted for the present method of treating pile process water in all 100 Areas. It was recommended that the water treatment procedures and specifications attached to this memorandum be initiated as standard practice in all 100 Areas as soon as it is possible to make the necessary equipment modifications and installations.
Date:
July 11, 1952
Creator:
Greninger, A. B.
Object Type:
Report
System:
The UNT Digital Library
105-N charge-discharge rates
Figures have and can be generated that indicate a higher charge-discharge rate if required before 105-N will be comparable with existing reactors. Also, these figures show an apparent operating cost incentive to increase the charge-discharge rates proposed for 105-N. Although these figures may be true by themselves, other figures developed from the same information and stated on a basis that affords a true comparison, show that the proposed rates for 105-N are compatible with those in existing reactors. However, the accomplishments of existing reactors should be considered as a guide only and not as Criteria since the design basis has already been established for Project CAI-816. An average charge-discharge rate has been proposed for 105-N that is compatible with the two main ground rules of the Project. Namely, the capital cost limitation and the plant factor. This rate of 8 tubes/hr. is one that appears to be reasonable from the charge-discharge design aspects and there is a good possibility that it can be increased with operational experience.
Date:
July 2, 1959
Creator:
Nesbitt, J. F.
Object Type:
Report
System:
The UNT Digital Library
200 area weekly report
None
Date:
July 28, 1955
Creator:
Christl, R. J.
Object Type:
Report
System:
The UNT Digital Library
The Absolute Abundance of the Nitrogen Isotopes in the Atmosphere and Compressed Gas From Various Sources
None
Date:
July 23, 1957
Creator:
Junk, G. & Svec, H. J.
Object Type:
Report
System:
The UNT Digital Library
Absorption Spectra of Plutonium and Impurity Ions in Nitric Acid Solution
The absorption spectra for Pu(III), (IV), (VI), and the red Pu(IV)- peroxy complex were determined in HNO/sub 3/ solution. Extinction coefficients for the above species of Pu were measured. Temperature has little effect on the spectra, but variation of acidity causes shifting of absorption peaks and some changes in the extinction coefficients. The absorption spectra and extinction coefficients in the region 390 to 1200 m mu were measured for chromic, nickelous, manganous, calcium, lanthanum, aluminum, ferrous. ferric, and permanganate ions in HNO/sub 3/ solutions. In addition, the effects of nitrite, oxalic acid, sulfamic acid, hydrogen peroxide, and various HNO/sub 3/ concentrations on the extinction coefficients of some of these ions were determined. The chromic, nickelous, ferrous, and permanganate ions, and ferric ion with oxalic acid, have sufficiently high extinction coefficients to cause inaccuracies in valence determinations of Pu in solutions containing high concentrations of these ions, unless corrections are made. (auth)
Date:
July 31, 1956
Creator:
Myers, M. N.
Object Type:
Report
System:
The UNT Digital Library
Abstract for the Glasgow Meeting - "International Conference on Nuclear Physics": Gamma Transitions and the Shell Model
The study of the interaction of the electromagnetic field with nuclei has proved very fruitful for the elucidation of many details of nuclear structure. The γ-ray transitions observed in either absorption or emission can be divided into three classes, depending on whether the matrix elements of the transition are (1) much larger, (2) approximately equal or (3) much smaller than those expected for single proton transitions which are usually taken as a norm. In class (1) we find (a) the broad transitions leading to the "giant resonances" in the nuclear photo-electric effect, and (b) the "fast" transitions between low lying states, especially for even-even nuclei far removed from magic numbers. The large matrix elements and the regular dependence of their magnitude on the atomic weight speak for cooperative phenomena in which many nucleons or the nuclei as a whole are involved. In class (2) we find the much studied M4 transitions which give strong support for the single particle model; they have rather uniform matrix elements. Some finer points remain to be understood, especially why some odd nuclei do not show the expected ratio for |M|^2 of ~ 2:1. The transitions belonging to class (3) require further selection rules and …
Date:
July 1954
Creator:
Goldhaber, M.
Object Type:
Report
System:
The UNT Digital Library
Abundances of the Elements
The abundances of the elements in nature, meteorites, and the Universe are reviewed. (DLC)
Date:
July 13, 1955
Creator:
Suess, Hans E. & Urey, Harold C.
Object Type:
Report
System:
The UNT Digital Library
Acceleration Characteristics of a Turbojet Engine With Variable-Position Inlet Guide Vanes
Report presenting a study of the acceleration characteristics of a turbojet engine equipped with variable-position inlet guide vanes in the altitude test chamber. Maximum acceleration values for 3 engines of the same model were also obtained during testing and were found to differ as much as 50 percent. Results regarding the effect of fuel step size and inlet guide vane on acceleration, effect of flight condition, reproducibility of engine acceleration, compressor pressure ratio in relation to acceleration, and acceleration with inlet air distortion are provided.
Date:
July 7, 1955
Creator:
Dobson, W. F. & Wallner, Lewis E.
Object Type:
Report
System:
The UNT Digital Library
Acceleration of high-pressure-ratio single-spool turbojet engine as determined from component performance characteristics 2: effect of compressor interstage air bleed
Report presenting an analytical investigation to determine the effect of compressor interstage air bleed with the use of constant-area bleed ports on the acceleration characteristics of a typical high-pressure-ratio single-spool turbojet engine. Constant-area interstage bleed, properly located, gave smaller acceleration times than variable-area compressor exit bleed. Results regarding acceleration with interstage bleed, acceleration using constant-area interstage bleed in combination with compressor outlet bleed, variable-area interstage bleed, and comparison of acceleration modes are provided.
Date:
July 3, 1953
Creator:
Rebeske, John J., Jr. & Dugan, James F., Jr.
Object Type:
Report
System:
The UNT Digital Library
Acceptance of hot pressured ``C`` alloy slugs
None
Date:
July 1, 1955
Creator:
Cooper, V. R.
Object Type:
Report
System:
The UNT Digital Library
Accident in Continuous-Dissolver Pilot Plant of Fluoride Volatility Project on May 15, 1957
A series of explosions, estimated at five, occurred over a period of ten seconds within the continuous dissolver pilot plant, of the Fluoride Volatility Project on May 15, 1957. The explosive reactions occurred in the dissolver vessels as a result of violent chemical reactions between uranium and an interhalogen mixture. Just what the conditions were which triggered the explosions, have not been definitely established. Nevertheless, based upon the evidence which has been collected, several possible explanations, listed according to probability, are presented. A number of recommendations are included to be followed before operation of the pilot plant is resumed. These recommendations relate to additional laboratory research, equipment design, facility design, and use of a review committee. Safety rules for handling BrF/ sub 3/, BrF/sub 5/, ClF/sub 3/, and Br/sub 2/ are appended. (C.H.)
Date:
July 10, 1957
Creator:
Strickland, G.; Horn, F. L.; Johnson, R. & Dwyer, O. E.
Object Type:
Report
System:
The UNT Digital Library
Accident in Continuous-Dissolver Pilot Plant of Fluoride Volatility Project on May 15, 1957
The so-called Fluoride Volatility Processes refer to several proposed non-aqueous methods of processing irradiated fuel elements. In each of these methods, the uranium is fluorinated to UF6 and then decontaminated by distillation. One of those methods, involving the direct fluorination of the uranium by bromine trifluoride (BTF), has been under investigation at BNL since 1950. In 1952, it was demonstrated at BNL that uranium, as UF6, could be satisfactorily decontaminated by distillation in small-scale pilot plant equipment; end in 1953, BNL undertook the job of determining the technical feasibility of a continuous dissolver on a pilot-plant scale. The reason for the project was that the economic superiority of the process seemed to depend upon its amenability to continuous operation.
Date:
July 10, 1957
Creator:
Strickland, Gerald; Horn, F. L.; Johnson, Richard & Dwyer, O. E.
Object Type:
Report
System:
The UNT Digital Library
Accumulation of Radioactivity in Columbia River Fish in the Vicinity of the Hanford Works
Abstract: The data obtained from the radioassay of fish collected in vicinity of the Hanford Works between April, 1948 and June, 1950 are presented. Most of the radioactivity in the fish resulted from the concentration of p32 in the scales, bone, and certain visceral organs. The level of activity density in the fish was influenced by size, feeding habits and metabolic rate in addition to the activity density of the water. Changes in operation of nuclear reactors have resulted in progressive increases in activity densities of fish from one year to the next. The levels of radioactivity are not sufficiently high to be hazardous to either the fish or persons eating them.
Date:
July 1, 1952
Creator:
Olson, P. A., Jr. & Foster, Richard F.
Object Type:
Report
System:
The UNT Digital Library
ACTIVE CATION TRANSPORT IN SUBMERGED AQUATIC PLANTS. I. EFFECT OF LIGHT UPON THE ABSORPTION AND EXCRETION OF CALCIUM BY POTAMOGETON CRISPUS (L) LEAVES
None
Date:
July 1, 1956
Creator:
Lowenhaupt, B
Object Type:
Report
System:
The UNT Digital Library
Additional Analysis of SRE Safety
AI-MEMOS are working papers and may be expanded, modified, or withdrawn at any time, and are intended for internal use only. Further dissemination is not permitted and distribution to abstracting agencies is not authorized.
Date:
July 1, 1956
Creator:
Morgan, W. T.
Object Type:
Report
System:
The UNT Digital Library
Additional Extraction and Ion Exchange Studies of Temple Mountain District Ores
Uranium extraction of 95% has been obtained from samples of Temple Mountain ore by a cyclic test procedure in which the new feed was not roasted. This procedure involved acid leaching the ore, flotation and roasting of the carbonaceous material, and acid leaching the roaster calcine.
Date:
July 30, 1954
Creator:
Jones, J. Q. & Viklund, H. I.
Object Type:
Report
System:
The UNT Digital Library
Additional measurements of the low-speed static stability of a configuration employing three triangular wing panels and a body of equal length
From Introduction: "The results of an investigation of the low-speed static stability of a simplified model of such an arrangement having one of the airfoils placed vertically on top of the body and the other two as wing panels having negative dihedral are presented in reference 1. In order to provide information for predicting the effects of changes in the basic configuration on the low-speed stability characteristics presented in reference 1, additional measurements have been made."
Date:
July 25, 1955
Creator:
Delany, Noel K.
Object Type:
Report
System:
The UNT Digital Library
Additional Static and Fatigue Tests of High-Strength Aluminum-Alloy Bolted Joints
From Introduction: "Early in 1951 the National Advisory Committee for Aeronautics published, as Technical Note 2276 (ref. 1), a report by the Aluminum Research Laboratories of the Aluminum Company of America on the results of static and fatigue tests of high-strength aluminum alloy monobloc specimens and bolted joints. In view of special interest shown by several aircraft companies, certain expansions of the test program were undertaken by the Aluminum Research Laboratories and are reported herein."
Date:
July 1954
Creator:
Hartmann, E. C.; Holt, Marshall & Eaton, I. D.
Object Type:
Report
System:
The UNT Digital Library
Adsorption of Zirconium-Niobium on Silica Gel
From abstract: "Adsorption of radioactive zirconium-niobium from uranyl nitrate solutions by silica gel was increased by increasing the temperature and time the solution contacts silica gel, and decreased by "aging" the solutions before contacting the silica gel."
Date:
July 1957
Creator:
Karraker, David G. & Parker, Sidney G.
Object Type:
Report
System:
The UNT Digital Library
Advanced Pressurized Water Reactor Study [Part 1]: Phase 1 Report
From preface: This report covers Phase I of the authorized work, consisting of determination of the specific reactor concept and size for the most economic reactor, preparation of a reference design of the most promising concept and estimated capital and generating costs, evaluation of the variations in cost as a function of unit size, and evaluation of the reductions in ultimate costs for a power station having multiple units of the same type.
Date:
July 1959
Creator:
U.S. Atomic Energy Commission. Division of Reactor Development.
Object Type:
Report
System:
The UNT Digital Library
Advanced Pressurized Water Reactor Study [Part 3]: 235 Mw Coal-fired Generating Plant
"This study is one of four initiated in 1958 by the Division of Reactor Development, U.S. Atomic Energy Commission, to assess the feasibility of power generation through the use of certain types of nuclear reactors. These studies are available from the Office of Technical Services, U.S. Department of Commerce, Washington 25, D.C."
Date:
July 1959
Creator:
U.S. Atomic Energy Commission. Division of Reactor Development.
Object Type:
Report
System:
The UNT Digital Library
Advanced Seminar in Reactor Physics
The following report provides equations that result from a seminar in reactor physics.
Date:
July 26, 1950
Creator:
Smith, Nicholas M.
Object Type:
Report
System:
The UNT Digital Library