Technical Report Archive & Image Library (TRAIL) - 12,794 Matching Results

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The Effects of Chronic Gamma Irradiation on the Growth of Kalanchoe cv. "Brilliant Star"

Description: Kalanchoe seedlings were exposed to 330 r/20 hrs/day from a Co60 source. Samples were harvested weekly. No new leaves were produced after initial exposure to irradiation. Mitosis in the apical meristem appears to have been suppressed. However, the axillary meristem and the cambium continue their activity. This results in a much broadened stem tip with enlarged cells, supported by a stout internode in which cell size has remained relatively normal but cell number has increased. After about 26 da… more
Date: February 1, 1963
Creator: Stein, O. L. & Sparrow, A. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Inelastic Interactions of 11.4 Bec/c π" Mesons in Hydrogen

Description: Production cross sections and angular distributions of Λ and K° particles produced by 11.4 Bev/c π" mesons in hydrogen have been measured. A systematic investigation was made of all two-body decays of unstable neutral particles. No events inconsistent with γ, Λ, or K° were found. Production cross sections, angular distributions and effective mass distributions of π mesons produced in 4-prong events were also measured. No evidence for dominance of any high mass multi-pion resonance was found. Bo… more
Date: February 1, 1963
Creator: Ferbel, T. & Taft, H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Chronic Excess Salt Consumption as an Etiologic Factor in Human Hypertension

Description: Since 1940 it has been known that extra salt (i.e. sodium chloride) facilitated the development of experimental hypertension induced by various sterols; subsequently hypertension was induced by desoxycorticosterone acetate plus sodium chloride; then hypertension was produced by using hypertonic saline as the sole source of liquid; and finally, in 1953, Menesly and his associates reported that chronic ingestion of excess dietary salt alone would produce hypertension in rats. Furthermore, in conf… more
Date: February 1, 1963
Creator: Dahl, Lewis K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Possibilities and Limitations in the use of Tritiated Thymidine for in Vivo Cytokinetic Studies on Lymphoreticular Tissue

Description: Tritiated thymidine (H3TDR), a specific precursor of deoxyribonucleic acid (DNA), has proved to be a valuable tool in the study of in vivo cellular kinetics. Various methods of analysis have been used in autoradiographic investigations of proliferative patterns and time parameters in different cell lines.
Date: February 1, 1963
Creator: Cottier, H.; Odartchenko, N.; Feinendegen, L. E. & Bond, V. P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Function of Bridging Groups in Electron-Transfer Reactions

Description: Electron-transfer reactions involving bridged transition states are examined from the point of view of adiabatic electron transfer theory. One important function of the bridging group is to decrease the effective dipole moment of the charge system of the reaction ions. The effect on the activation energy is different for outer-sphere and inner-sphere reactions. Trends in the halide and hydroxide catalysis of isotopic exchange reactions of transition metal ions are discussed.
Date: February 1, 1963
Creator: Hush, N. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Radiation Damage in Graphite, Interstitial Reaction Kinetics: Comparison of Theory and Experiment

Description: Interstitial cluster distributions and radiation formation and decomposition reactions are identified by fitting experimentally determined kinetic equations with calculations for consecutive reaction systems. Rate constants for the radiation decomposition of interstitial complexes are temperature independent and depend only on the neutron flux and the cross section of the complex.
Date: 1963
Creator: Schweitzer, Donald G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Di-Interstitial Annealing During the First Neutron Irradiation of Graphite: The Mobility of C2

Description: Radiation and annealing mechanisms for dimensional and c-axis changes in which the di-interstitial can be mobile at any or all temperatures above absolute zero are shown to be concordant with earlier work used to determine the migration energy energy of single interstitials and the absolute rate of displacing atoms in graphite. The mechanisms account for the stability of c-axis and dimensional changes with time in the absence of irradiation and with observed c-axis annealing at room temperature… more
Date: February 1, 1963
Creator: Schweitzer, Donals G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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On the Hormonal Regulation of Carbohydrate Metabolism; Studies with C14 Glucose

Description: Earlier studies concerned with the influence of various hormones on carbohydrate metabolism in the dog were presented to this Conference in 1952. These studies dealt with the effects of adrenalectomy and hypophysectomy, and of regimens of anterior pituitary and adrenal hormones. Observations of changes in blood glucose concentration brought about by the administration of insulin, a glucose load, or of a epinephrine played a major part in this earlier work.
Date: 1963
Creator: de Bodo, R. C.; Steele, R.; Altszuler, N; Dunn, A. & Bishop, J. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Transport of FissionProducts Through the Soil Following Injection From a Well and Methods Used for Removal

Description: In the summer of 1960 one of the little used wells on the Brookhaven National Laboratory site became accidentally contaminated with radioactive material. The contamination was discovered during a routine sampling of all wells in the waste disposal area, so there was a period of several weeks between the time of discharge.
Date: February 1, 1963
Creator: Gemmell, L. & Pearsall, S. G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Effect of Tritiated Thymidine on the Morphogenesis of Lateral Roots

Description: Most studies of the effect of radiation upon plant development utilized external sources of irradiation. Where radioactive isotopes were used these were primarily applied in metabolic or cytological studies. The effects of these isotopes are similar to those produced by external irradiation, modified by such phenomena as specific localization, timing of irradiation, modified by such phenomena as specific localization, timing of irradiation, etc. The advent of tritium as a means of irradiation o… more
Date: unknown
Creator: Stein, O. L. & Quastler, H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Calculation of Zero-Point Energies of Molecules by Perturbation Methods

Description: Two methods are proposed for calculating zero-point energies of molecules. The first makes use of the fact that one can easily write down the quantum mechanical Hamiltonian for a vibration system. The zero-point energy can then be obtained by a perturbation scheme without solving the secular equation. The second method requires a knowledge of the normal modes and frequencies of a reference molecule, but then enables one to calculate isotope effects by a perturbation scheme. The methods are appl… more
Date: February 1963
Creator: Wolfsberg, Max
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Use of Tritiated Thymidine in the Study of Tissue Activation During Germination in Zea Mays L.

Description: The transition from dormancy to growth in plant seeds has been the topic of many biological studies (1,2). Of particular interest to the radiobiologist are the dramatic changes in radiosensitivity occurring soon after the soaking of the seeds (3). These changes are thought to be associated with the commencement of proliferative activity. The recently developed method of labeling DNA with tritiated thymidine allows analysis of proliferative activity in greater detail than was heretofore possible… more
Date: February 1, 1963
Creator: Stein, O. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Fundamental Problem of Late Neurological EffectFollowing Acute Irradiation

Description: Since the end of the last century (Tarknow, 1896) radiation effect o the nervous tissue has been studied in experimental animals and humans by numerous investigators, using mostly pathomorphological changes as a parameter of radiosensitivity . With increasing time intervals following radiation, pathomorphological changes are more evident, which has been known for quite some time.
Date: February 1, 1963
Creator: Yamamoto, Y. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Cosmic Ray Produced Ar37 and Ar39 Activities in Recently Fallen Meteorites

Description: Several methods of determining meteorite ages depend ages upon nuclides formed by cosmic ray interactions. The tactic assumption is always made that the intensity of cosmic radiation does not vary in time or space. However it is known that the intensity of cosmic radiation at the earth varies with the solar activity. The spectrum of cosmic ray protons and alpha particles exhibit a marked drop at the low energy end (<1.5 GeV) and the intensity in the region appears to follow the 11 year cycle of… more
Date: February 1, 1968
Creator: Davis, R. Jr.; Stoenner, R. W. & Schaeffer, O. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Status of Meteorological Knowledge as a Factor in Air Pollution Control

Description: The first national Technical Conference on Air Pollution (1) held in this city in 1950 included eight papers on meteorology; the present session contains one. On this basis, one night conclude that recent progress in meteorology has been virtually nonexistent or that the importance of meteorological factors has been diminishing, Neither could be further from the truth, as the number and quality of papers relating to air pollution meteorology in recent scientific and technical sessions will atte… more
Date: 1968
Creator: Smith, Maynard E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Influence of Low Concentrations of Crystal Defects on Thermal Annealing of Recoil Br82 in Hexabromoethane

Description: When the nucleus of an atom in a crystalline solid undergoes radiative neutron capture there is disruption of the crystal in the vicinity of the event due to energetic processes accompanying the nuclear transformation. This local disruption has been termed a "hot-zone" or "displacement spike". The chemical state of a transformed recoil atom immediately following transformation is unknown. Within a microsecond the "hot zone" has cooled sufficiently to "freeze" the recoil atom into a stable (or m… more
Date: December 20, 1962
Creator: Collins, Kenneth E. & Harbottle, Garman
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Some Applications of the Chase Two-Dimensional Analyzer at Brookhaven National Laboratory

Description: The Chase two-dimensional analyzer is a 64 channel by 64 channel analyzer with a magnetic drum memory and a buffered storage system. The memory capacity is 2 counts per channel. The maximum storage rate is limited by the drum speed and is about 800 counts per second for a featureless spectrum.
Date: November 6, 1962
Creator: Donovan, Paul F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Future Program for the Cern PS and the Brookhaven AGS

Description: The alternating-gradient proton synchrotrons at CERN and Brookhaven are very similar in size, design and in their experimental use. For this reason, collaboration between the groups at CERN and Brookhaven has been close throughout the history of these two machines. For the most part this has taken the form of exchanges of visits of individual machine designers and of high-energy physicists. By 1962, however, it appeared that the reciprocal flow of information was not adequate and a more formal … more
Date: 1962-09-10/1962-09-14
Creator: Blewett, J. P.; Bittner, J. W.; Brown, H. N. & Maschke, A. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Free Radicals Formed From Ortho Substituted Nitro Compounds

Description: The photochemical rearrangement of o-nitrobenzaldehyde to nitrosobenzoic acid was discovered in 1901 and has been investigated by various workers. The reaction is known to occur both in the solid state and in solution. It seemed possible that a paramagnetic species could be formed during the photolysis and that an Electron Spin Resonance studt would give useful information.
Date: unknown
Creator: Tench, A. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Minutes of the Conference of Linear Accelerators for High Energies

Description: During the past year notable progress was made in several laboratories on design for linear accelerators in the energy range up to and above 1 Bev. Interest in linacs for this energy centers on two possible applications: first, as injectors for 300 to 1000 Bev synchrotrons, and second, as sources of intense meson beams. To review this progress, a conference jointly sponsored by the Brookhaven National Laboratory and Yale University was held at Brookhaven during the week of August 20, 1962.
Date: 1962-08-20/1962-08-24
Creator: Blewett, J. P.; van Steenbergen, A.; Knowles, H. B.; Ohnuma, S. & Sinclair, C. K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Brookhaven Chemo-Nuclear In-Pile Research Loop

Description: The purpose of the Chemo-nuclear In-pile Research Loop is to provide a versatile facility for investigating chemo-nuclear reactions under flow conditions. The loop os designed to handle gaseous systems in conjunction with fixed packages of solid fuel.
Date: October 1962
Creator: Steinber, Meyer; Tucker, Walter; Waide, Charles & Bezler, Paul
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Metabolism of Fission Products in Man: Marshallese Experience

Description: Information on the metabolism of fission products in man has been obtained largely from studies carried out with parenterally-administered soluble salts of radioisotopes administered in medical treatment or in tracer studies. The recent development of the whole-body gamma spectrometer with its highly sensitive detection system has been of considerable value in extending these studies by providing data on very low levels of isotopes in man over long periods of time.
Date: December 7, 1962
Creator: Cohn, S. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Some Specific Considerations of the Potential Hazards of Heavy Primary Cosmic Rays

Description: The radiation of the Van Allen belts and the solar flares consists primarily of electrons and protons, the biological effects of which are reasonably well known. However, there is a very small component of the galactic cosmic rays which consists of stripped atomic nuclei of atoms as heavy as iron. The biological effects of such particles have not been extensively investigated because it is impossible to produce them in the laboratory with an energy high enough to use for mammalian experiments. … more
Date: December 7, 1962
Creator: Curtis, Howard J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Radiation Effects on Cell Renewal Systems

Description: Much of the early work in radiation biology was predicted on the assumption that radiation effects could be understood in terms of a single mechanism. This "single mechanism" was studied on appropriate biological test objects that could be developed into biological dosimeters. Attempts were made to assess the properties of "the" biological effects from the relations of "biological dose" (skin dose, bean dose, fly dose, etc.) to physical parameters of irradiation. Notwithstanding the rigidity of… more
Date: December 7, 1962
Creator: Patt, Harvey M. & Quastler, Henry
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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