32 Matching Results

Search Results

Advanced search parameters have been applied.
in place name: "United States"  
Results: 1 - 24 next
open access

Factors Influening Ammonia Decomposition in the Kjeldahl Method with Sealed Tube Digestion

Description: This report follows the work on the Kjedahl digestion procedure in sealed tubes at 470 C. as well as analyzing factors influencing ammonia decomposition within these tubes.
Date: June 1954
Creator: Green, LeRoy G.; Koch, Charles William; Grunbaum, Benjamin W. & Kirk, Paul Leland, {}
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Neutron Production by High-Energy Particles

Description: Abstract: "From neutron-yield measurements made with a MnSO4 detecting solution, the average number of neutrons produced per inelastic event is determined for a series of elements from lithium to uranium for 340-Mev protons, 190-and 315-Mev deuterons, 490-Mev He3 ions, and 90- and 160-Mev neutrons. The results are analyzed in an attempt to understand the total yield measurements for thick targets and to explain the variation of yield with the atomic number of the target."
Date: September 29, 1954
Creator: Crandall, Walter E. & Millburn, George P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Use of Controlled Photosynthesis for Maintenance of Gaseous Environment

Description: Abstract: "The problem of maintaining livable oxygen and carbon dioxide pressures in a closed space in which men must live leads to consideration of the possible use of the photosynthesis of green algae. A calculation based on the known respiratory rate of man and the photosynthetic rates of Chlorella indicates that it would be feasible to use algae for this purpose."
Date: September 1954
Creator: Bassham, James Alan
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effects of Ionizing Radiation on Choline Chloride and Its Analogs

Description: Abstract: "Choline chloride and six analogs have been exposed in the dry, crystalline state to high-energy electron and gamma radiation. This investigation has confirmation the abnormal radiation sensitivity of choline chloride. Its G values (molecules decomposed/100 ev) were found to be: e- -radiation, 20; y-radiation, 175. These high values indicate a chain mechanism for the solid-state reaction. The G values for the choline analogs were found to range from 1 to 18 for the electron irradiatio… more
Date: December 1954
Creator: Lemmon, Richard M.; Parsons, Margaret A. & Chin, Doris M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Focusing in Linear Ion Accelerators

Description: Abstract: "The results of the investigation of three methods of obtaining transverse stability in linear accelerators for ions are presented and discussed. For electric or magnetic quadrupole focusing the range of stable operation, oscillation amplitudes, and the operation of an actual grid is analyzed from measurements of the field distribution. Finally, the formulas applicable to focusing by axial magnetic lenses are presented."
Date: November 24, 1954
Creator: Smith, Lloyd & Gluckstern, Robert L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

High Energy Fission and Spallation of Uranium

Description: From introduction: "This report is an attempt to examine, semiquantitavely, the way the competition between neutron emission and fission varies for heavy nuclei as a function of nuclear type and excitation energy. Many of the ideas herein are the results of discussions with R. H. Goeckermann and W. Heckrotte of the University of California Radiation Laboratory."
Date: February 25, 1954
Creator: Batzel, Roger Elwood
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Acceleration of a Plasma by Time-Varying Magnetic Fields

Description: Abstract: An application of the magnetic mirror principle to the acceleration of a plasma is described. It is shown that an axially symmetric magnetic field which increases with time but decreases with distance along the axis can impart a net translational energy to a plasma. This effect on a plasma is contrasted with that arising from an impressed electric field, which is not effective in producing acceleration.
Date: December 6, 1954
Creator: Post, Richard F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Measurement of the Behavior of a Plasma in a Magnetic Field by Means of Probes

Description: Abstract: "Probes were used to measure certain properties of the cloud of positive ions and electrons ejected from a pulsed ion source having two hydrogen-loaded electrodes. Time-of-flight measurements show: the presence of H+ ions with 50 ev directed energy; an increase of this energy with increasing pulse current in the source; a higher peak yield of ions with higher peak currents in the source; and higher yields and higher ion energies up to 110 ev have been recorded with the use of a pulsed… more
Date: December 1, 1954
Creator: Bostick, W. H.; Zizzo, S. G. & Cook, Buford
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

An Exact Analysis of Limited Plane Plasma in a Magnetic Field

Description: Introduction: "Prior analyses of a plasma in a magnetic field have been limited, as far as the writer is aware, to cases in which the relative change in field over the orbital distance and the relative change in ion concentration are both small, or in which the relations have been viewed in a purely hydrodynamical way. The first approach excludes cases which can be of considerable interests, for it fails near a plasma edge. The second loses all sight of the structure imposed by the orbital moti… more
Date: December 2, 1954
Creator: Tonks, Lewi, 1897-1971
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Instability Considerations for Various Difference Equations Derived from the Diffusion Equation

Description: From abstract: "This paper is concerned with instability analysis of various difference equations whose solutions represent the solution of a given diffusion equation where "a" is positive under stated initial and boundry conditions."
Date: October 1954
Creator: Evans, George W.; Brousseau, R. J. & Kierstead, Ralph
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

An Enhanced Magnetic Mirror Machine

Description: Abstract: "A dc magnetic mirror machine has been built and tested by the ARC Research Group. Radiofrequency enhancement has been included in the design through the use of rf plates in the vacuum chamber of the machine. For the proton beams of the order of 1[mu]a, the mirror action has been observed as a function of both the rf voltage and the magnitude of the mirror field relative to the main magnetic field. Current measurements were performed with the aid of a Faraday cup with suitable bias gr… more
Date: July 15, 1954
Creator: Ford, Franklin C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Energy-Dependent Albedo

Description: From abstract: "Within the framework of age theory an expression is developed which represents the probability of a neutron being reflected with an energy loss corresponding to age, v, as a function of reflector thickness."
Date: September 20, 1954
Creator: Drummond, William E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Dr. Johnson's Lectures to the ARC Research Group

Description: Abstract: "These notes were written from recordings of a series of lectures which Dr. Montgomery H. Johnson presented to the ARC Research Group of the University of California Radiation Laboratory, Livermore, during January, February and March of 1954. In the lectures he discussed plasma oscillations and the penetration of radiofrequency electromagnetic fields into plasmas. Dr. Johnson plainly did not attempt rigorous or exhaustive treatments of these subjects but rather contented himself for t… more
Date: November 1954
Creator: Roberts, John E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

MTA Progress Report for June through November, 1953

Description: Introduction: "This report covers the contributions of UCRL to MTA research and development program during the period June 1 to November 30, 1953. In this program UCRL continues to work in close collaboration with the California Research and Development Company (CRD)."
Date: February 8, 1954
Creator: Lawrence Radiation Laboratory
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

On the Reaction p + d [right arrow] [mu]⁺ + t

Description: Abstract: "The cross section for this reaction is calculated for three Hulthen deuteron wave functions. A hard core in the deuteron at one-half meson Compton wavelength reduces the total cross section and flattens the angular distribution in the backwards direction in agreement with experiment."
Date: February 5, 1954
Creator: Bludman, Sidney A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A Linear, Transparent Beam Integrator

Description: Abstract: "A fast, linear air-ionization chamber has been developed for integrating and monitoring external heavy-particle beams. It consists of a thin-windowed air chamber in which the beam ionization light is viewed by a photomultiplier whose output is fed directly to a standard electrometer."
Date: February 12, 1954
Creator: Kitchen, Sumner W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Meson Mass Measurements III : The Pi-Mu Mass Ratio and Energy Balance in Pion Decay

Description: From introduction: "This article constitutes the third of a series of three papers on the "direct" measurements of the meson masses by the "Hp vs. Range" mass ratio method...The study here reported is a logical extension of the pion-proton mass ratio technique."
Date: March 23, 1954
Creator: Birnbaum, Wallace
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Extraction of Zirconium and Hafnium with Various Fluorinated [beta]-Diketones

Description: Abstract: "The distribution ratios and equilibrium constants for the extraction of zirconium and hafnium from 4 M perchloric acid with various combinations of fluorinated [beta]-diketones and organic solvents have been determined. The separation factors K'Zr/K'HF, found for this acidity were: Z-thenoyltrifluoroacetone in benzene, 25; Z-thenoyltrifluoroacetone in o-dichlorobenzene, 16; benzoyltrifluoroacetone in benzene, 18; isovaleroyltrifluoroacetone in benzene, 13; isovaleroyltrifluoroacetone… more
Date: April 5, 1954
Creator: Huffman, E. H.; Iddings, G. M; Osborne, R. N. & Shalimoff, G. V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Metabolism of Chyle Cholesterol in the Rat

Description: Abstract: "Observations on the metabolism of chyle cholesterol in the rat show that exogenous cholesterol entering the systemic circulation in chyle exists in lipoproteins of low density (including chylomicrons) migrating with a high Sf rate (i.e.>400) in the ultracentrifuge. Following entry into the systemic circulation these molecules are rapidly removed from the plasma. This "clearing" of serum chyle cholesterol is a tissue phenomenon, the liver being the predominant site. Within the liver t… more
Date: May 12, 1954
Creator: Biggs, Max William & Nichols, Alexander V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen