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Sonic decontamination
The supersonic method of cleaning glassware is an outgrowth of the fact that it has been heretofore impossible to manually clean ground glass and quartz joints because the activity became lodged in the small pores of the ground surfaces. It has been theorized that the nature of the forces binding polonium to the glass is similar to that of the chemical bond but are less intense. The problem then becomes one of finding a force greater than this binding energy, capable of freeing the activity from the glass. This has been accomplished by using frequencies of 100 cycles to 20 kc at a power output from 2 to 20 watts, passing through a citric acid solution (pH-2) into which the contaminated article is placed. The optimum results, using a tank with the dimensions 7 in. {times} 7 in. {times} 7 in. and 3 liters of solution, has been found at 200 cycles or harmonics of 200 cycles. Citric acid was used because of the fact that it forms a soluble complex with polonium. The frequencies used have been kept within the sonic range until enough data has been obtained and correlated to warrant the design and construction of more costly …
Date:
January 25, 1949
Creator:
Brodbeck, R. M. & Schommer, G. R.
Object Type:
Report
System:
The UNT Digital Library
The excretion of hexavalent uranium following intravenous administration. II, Studies on human subjects
Tracer studies employing uranium enriched in the isotopes U{sup 234}, U{sup 235} have been carried out in six human subjects; four males and two females. The uranium, 6 micrograms to 70 micrograms per kilogram of body weight was given intravenously in the hexavalent state as uranyl nitrate. Each individual of the series received a single injection of the metal except for one who was given two widely spaced doses. The first of these was when his condition was normal and the second after an acidosis had been produced by ingestion of ammonium chloride. Renal function tests including urinary catalase, protein, amino N to Creatinine N ratio and clearances of mannitol and p-aminohippurate were done before and after administration of uranium. Only at the 70 microgram per kilogram level in Subject 6 was there a slight rise in urinary catalase and protein suggesting that tolerance had been reached. The excretion of uranium was mainly in the urine, where from 70 to 85% of the administered dose appeared in the first twenty-four hours. Urine of the second twenty-four hours contained about 4% and the third twenty-four hour urine, 1.5% of the administered dose. Detectable amounts were excreted for at least two weeks.
Date:
June 25, 1948
Creator:
Bassett, S.H.; Frankel, A.; Cedars, N.; VanAlstine, H.; Waterhouse, C. & Cusson, K.
Object Type:
Report
System:
The UNT Digital Library
Radioactive decontamination of metals by electropolishing
Prior to April 1948 the generally accepted method of reducing the radioactive contamination of metal tools and laboratory apparatus was a series of rinses in aqua regia or various other concentrated acids. This method proved unsatisfactory for three reasons. (A) It was not a dependable method of removing activity. (B) It had a delecterious effect on tools in that it caused serious pitting, which resulted in weakened parts, and exposed a bare metal that was subject to very rapid corrosion. (C) Tools and apparatus once cleaned by this method could not readily be cleaned a second time. With the aforementioned limitations in mind, it became obvious that a new method was required. After considerable investigation into a electrochemical processes the present method was developed. Essentially, the new method is an electropolish bath to remove the activity lodged in the pores of the metal, and a ``follow-up`` chrome plate bath to render the surface impassive to corrosion.
Date:
January 25, 1949
Creator:
Brodbeck, R. M. & Schommer, G. R.
Object Type:
Report
System:
The UNT Digital Library
Unit purging
None
Date:
June 25, 1945
Creator:
Kidder, C. P.
Object Type:
Report
System:
The UNT Digital Library
Thermopiles for pile monitoring
None
Date:
February 25, 1944
Creator:
West, J.
Object Type:
Report
System:
The UNT Digital Library
The Path of Carbon in Photosynthesis II. Amino Acids
The radioactive amino acid's synthesized from C{sup 14}O{sub 2} by green algae both in the light and in the dark after CO{sub 2}-free preillumination have been separated and identified using paper chromatography and radioautography. The radioactive amino acids identified were aspartic acid, alanine and smaller amounts of 3- and 4-carbon amino acids. This finding as well as the total absence of radioactive glutamic acid substantiates the mechanism for reduction of CO{sub 2} previously postulated by members of this laboratory.
Date:
May 25, 1948
Creator:
Stepka, W.; Benson, A. A. & Calvin, M.
Object Type:
Report
System:
The UNT Digital Library
Progress Report Number 9. April 16, 1949 - May 15, 1949
None
Date:
May 25, 1949
Creator:
Gibb, Thomas R. P., Jr.
Object Type:
Report
System:
The UNT Digital Library
Research Progress Meeting of March 25, 1948
This summary of the research progress meeting for March 25, 1948 covers the following topics: (1) Recent n-p scattering measurements; (2) Mass measurements of mesons; and (3) Naphthalene counters.
Date:
March 25, 1948
Creator:
Wakerling, R.K.
Object Type:
Report
System:
The UNT Digital Library
Chemical Properties of Uranium Hexafluoride, UF6
Uranium hexafluoride has the distinction of being the only stable gaseous compound of uranium known up to the present moment. Because of this property it is the only compound that can be used for processes of isotope separation, such as diffusion, thermal diffusion, centrifuge separation, distillation, and other of a similar nature. Here is a short description of the properties of UF{sub 6} and is intended for a reader interested only casually in this compound. UF{sub 6} is a very reactive compound and a very strong fluorinating agent. It is immediately hydrolized by water. In fluorinating reactions it is reduced to the green highly stable UF{sub 4}. It reacts instantaneously with hydrogen at room temperature. It fluorinates many metals; sodium and mercury are attacked in the cold, lead, zinc, tin and iron on heating; platinum and gold react only above 400 C. With organic compounds like alcohol, ether, benzene or toluene, immediate fluorination takes place with formation of HF and carbon or carbonaceous material. The compound forms colorless, very volatile, beautiful transparent crystals of high refractive index. Melting point = 69.5{sup o}; boiling point at 760 mm = 56.2{sup o}; D20{sup o} = 4.68. The crystals melt water pressure to …
Date:
June 25, 1941
Creator:
Grosse, Aristid V.
Object Type:
Report
System:
The UNT Digital Library
Determination of Tuballoy Uranium With the X-Ray Spectrograph. Summary Report
None
Date:
October 25, 1945
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
SUGGESTIONS FOR A HIGH TEMPERATURE PEBBLE PILE
None
Date:
October 25, 1944
Creator:
Daniels, F.
Object Type:
Report
System:
The UNT Digital Library
A high resolution scale-of-four
A high resolution scale-of-four has been developed to be used in conjunction with the nuclear particle detection devices in applications where the counting rate is unusually high. Specifically, it is intended to preceed the commercially available medium resolution scaling circuits and so decrease the resolving time of the counting system. The circuit will function reliably on continuously recurring pulses separated by less than 0.1 μ sec. It will resolve two pulses (occuring at a moderate repetition rate) which are spaced at 0.04 μ sec. A five-volt input signal is sufficient to actuate the device.
Date:
August 25, 1949
Creator:
Fitch, V.
Object Type:
Report
System:
The UNT Digital Library
The Chelate Compounds of Plutonium
None
Date:
May 25, 1946
Creator:
Wolter, F. J.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
CRITICAL DIMENSIONS OF UNTAMPED CONICAL VESSELS
None
Date:
August 25, 1947
Creator:
Murray, R.
Object Type:
Report
System:
The UNT Digital Library
MATERIALS TESTING REACTOR PROJECT. ADDENUM TO REACTOR BUILDING WING REPORT. Design Report No. 27A
None
Date:
November 25, 1949
Creator:
Link, L.E. & Guzik, R.F.
Object Type:
Report
System:
The UNT Digital Library
FABRICATION OF URANIUM WIRE
None
Date:
October 25, 1949
Creator:
Anderson, R.E.; Taub, J.M. & Doll, D.T.
Object Type:
Report
System:
The UNT Digital Library
ATTEMPTS TO PREPARE TRIFLUOROACETIC ACID BY THE REACTION OF COBALTIC FLUORIDES WITH ACETIC ANHYDRIDE AND ACETONITRILE
None
Date:
May 25, 1945
Creator:
Halbedel, H.S.
Object Type:
Report
System:
The UNT Digital Library
Developments in the Casting Department of the Metal Production Plant at Iowa State College. Special Report on the Casting of Uranium at Iowa State College
This report addresses the casting of uranium rods at iowa state college.
Date:
August 25, 1945
Creator:
Wilhelm, H. A.
Object Type:
Report
System:
The UNT Digital Library
Density of Solid Hex Uf$Sub 6$ Near the Triple Point, and the Expansivity of the Liquid From the Triple Point to 92 C
The report addresses the density of solid hex near the Triple and the expansivity of the liquid from the triple point.
Date:
February 25, 1943
Creator:
Wechsler, Martin T. & Hoge, Harold J.
Object Type:
Report
System:
The UNT Digital Library
Photographic film as a pocket radiation dosimeter
The energy dependence of film blackening is discussed and shown graphically. The exposure range of films is discussed, and blackening is plotted vs exposure for DuPont No. 502, and for the less sensitive DuPont No. 351. A plan is then described for monitoring radiation exposure to workers by requiring the worker to carry an x-ray film of dental packet size in a badge designed for the purpose. (LEW)
Date:
April 25, 1944
Creator:
Pardue, L. A.; Goldstein, N. & Wollan, E. O.
Object Type:
Report
System:
The UNT Digital Library
Repairs to the retention basins (Bldgs. 107) in 100-B, 100-D, and 100-F
None
Date:
June 25, 1946
Creator:
Montgomery, D. C.
Object Type:
Report
System:
The UNT Digital Library
Suspected leak in 107-F basin
None
Date:
September 25, 1945
Creator:
Healy, J. W.
Object Type:
Report
System:
The UNT Digital Library
Hanford Works monthly report, January 1949
This document details activities at the Hanford Engineer Works during the month of January 1949.
Date:
February 25, 1949
Creator:
Prout, G. R.
Object Type:
Report
System:
The UNT Digital Library
Suggested hydrologic investigations at the Hanford Directed Operations
This memorandum is an outline of hydrologic investigations that seem desirable at the Hanford Directed Operations of the Atomic Energy Commission. In its present form, the outline is tentative and is intended as a basis for further considerations in the Commission, the Geological Survey, and other agencies concerned. In scope, it seeks to cover (1) advisory functions to the Atomic Energy Commission and its prime contractor with respect to an evaluation of the continuing hazards due to process wastes, also with respect to water-supply problems of the expanding operations at Hanford; also (2) civilian-protection aspects of possible emergencies, especially in the region adjacent to the Hanford reservation.
Date:
August 25, 1948
Creator:
Piper, A. M.
Object Type:
Report
System:
The UNT Digital Library