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The Effect of Certain Gases on the Radiosensitivity of Habrobracon During Development

Description: Groups of Habrobracon during postembryonic development were exposed to X-rays in the presence of oxygen, carbon dioxide, nitrogen and hydrogen. The effects on development to adulthood were observed. Pupae exposed to 100 per cent oxygen (without X-radiation) were arrested in their development. Diploid female pupae were more resistant to X-rays and more sensitive to oxygen than were comparable haploid male pupae. Groups of Habrobracon irradiated during the larva-in-cocoon stage in the presence of… more
Date: unknown
Creator: Clark, A. M. & Herr, E. B., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Metabolic Effects of Marked Sodium Restriction in Hypertensive Patients: III. Skin Electrolyte Losses

Description: The increasing use of prolonged Na restriction in the treatment of cardiovascular diseases in particular, makes study of long-term Na balance pertinent. With diets which contain 2 to 7 mEq. Na per day, combined urine and stool losses average 1 to 5 mEq. Na per day. Therefore, over an extended period the loss of electrolyte through the skin assumes importance. It is well known that marked sweating may be associated with considerable loss of NaCl through the skin. However, except for Benedict's c… more
Date: unknown
Creator: Dahl, Lewis, K., M. D.; Stall, Bernard, G., III, M. D. & Cotzias, George, C., M. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Studies with Radiophosphorus in Drosophila. V. Quantitative Studies on the Phosphorus Balance of Adult Female Flies Feeding Upon Yeast

Description: A study was made of the movement of the phosphorus of yeast ingested by adult female Drosophila melanogaster. It was found that seventy to eighty percent of the phosphorus in yeast is extracted during its passage along the gut. An average of 90% of the extractable phosphorus of the meal has passed through the gut to other tissues by the time the digestive tract has emptied. Incorporation of medium P into eggs is very rapid. Eggs laid by week old females contain over thirty times as much exogeno… more
Date: unknown
Creator: King, R. C. & Wilson, Louise, P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Studies of the Radiation Syndrome in Drosophila Melanogaster

Description: Irradiation with approximately 60,000r kills fasted adult Drosophila melanogaster within one day and is lethal to 60% of the non-fasted flies within two weeks. Males die sooner than females. However, males show little or no modification of phosphorus turnover and maintain their weights at control values. In contrast, the rate of growth of irradiated females is slowed down, but the flies eventually reach weights in excess of controls. Irradiated females have fast and slow phases of phosphorus tu… more
Date: unknown
Creator: King, R. C. & Wilson, Louise, P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Cytogenetic Analysis of a Spontaneous Pre-Meiotic Mutation in Maize

Description: The paucity of pre-meiotic mutations in maize has prompted a cytogenetic analysis of one which occurred at the R locus. Cytogenetic tests of a spontaneous pre-meiotic R --> r mutation indicate that it is an autonomous mutation for the R locus. No evidence was found for a factor, other than the R locus, as a causal agent for the mutation. The mutant behaves as a stable r allele. No evidence was found for chromosomal alteration, pollen or transmission sterility. Thus, within the limits of the tes… more
Date: unknown
Creator: Dollinger, E. J. & Singleton, W. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Computation of Soil Moisture at Brookhaven National Laboratory

Description: The high incidence of drought conditions in recent years has caused considerable concern among agriculturalists in eastern Long Island. A convenient method of computing soil moisture on a daily basis has therefore been sought in order to provide a quantitative estimate of present and past conditions.
Date: unknown
Creator: Brown, Robert, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Preparation of Radioactive Iron from Tissue for Assay of Activity

Description: Estimation of radioactive iron in tissues from animals given this material has commonly involved the following: The iron is separated from wet-ashed tissue as the sulfide or oxide, or from dry-ashed tissue as a complex with isopropyl ether or cupferron. The iron is converted to the oxalate or citrate and then electroplated on copper as preparation for estimation of radioactivity.
Date: unknown
Creator: Klein, J., Raymond & Bianchi, Paul
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Procedure for Annealing Operation

Description: By heating the normally cool areas of graphite to temperatures of 200°C or higher, it is evident that a substantial portion of the energy stored will be released. The physical dimension change which is associated with the radiation damage of graphite has been noted to partially recover under laboratory conditions when this amount of stored energy is released. This latter phenomenon is of prime interest in this operation. If a dimension recovery is noted on the gross structure, a solution to cer… more
Date: 1953
Creator: Powell, R. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Instrumentation and Control of the Brookhaven Nuclear Reactor

Description: Safe startup and operation of the nuclear reactor requires neutron sensing instruments to cover a range of about 10^9. This coverage is obtained by a counting rate meter, a period meter, and a high level power indicator. At normal operating levels, the reactor is regulated by the high level power controller and protected by the high level trips. Emergency shutdown of the reactor can be initiated by any one of the 54 different conditions. Since these safety circuits are almost 100% "fail safe",… more
Date: unknown
Creator: Binns, J. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Determination of Exchange Rates in Three-Compartment Steady-State Closed Systems Through the Use of Tracers

Description: Previous analyses of the behavior of tracers in three-compartment systems are incomplete, are scattered throughout the literature and are expressed in a confusing variety of notations. This article purports to unify the previous contributions and further to develop the application of the mathematical basis involved in the interpretation of experimental data, with emphasis on the relationship between the behavior of tracers and the exchange rates of their carriers in steady-state systems.
Date: unknown
Creator: Robertson, J. S.; Tosteson, D. C. & Gamble, J. L., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Modification of General Eletric SPG Goniometer for Single-Crystal Neutron Diffraction Measurements

Description: A miniaturized goniometer for single-crystal neutron diffraction has been described previously. The present note describes a second single-crystal instrument, which consists of a modification of the commercially-available General Electric "SPG" X-Ray Spectrogoniometer. The specimen holder, incident slit system and Geiger counter mount is removed from the SPG instrument. A divided circle is mounted on the specimen holder table, and this circle is rotatable by means of a worn-gear. The worn and g… more
Date: unknown
Creator: Pepinsky, R. & Frazer, B. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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0-2 kv Flash Tube Supplies

Description: In order to perform the various experiments with a bubble chamber, a high intensity flash tube is used. This report briefly describes the power supplies designed and constructed to power these lamps.
Date: March 15, 1962
Creator: Miller, D. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Paper for Glasgow Conference on Nuclear Physics: Cosmotron Production of Heavy Mesons

Description: One might expect that the Cosmotron would offer certain advantages over cosmic rays for the study of heavy unstable particles; provided, of course, that it can produce them. In the first place, the conditions under which they are produced could be controlled to a considerably greater extent. In the second place, it might be possible to arrange conditions under which they would be observed more abundantly, an actual beam of heavy mesons being the ideal situation.
Date: July 1954
Creator: Thorndike, A. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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