Use of Controlled Photosynthesis for Maintenance of Gaseous Environment (open access)

Use of Controlled Photosynthesis for Maintenance of Gaseous Environment

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
System: The UNT Digital Library
High Energy Fission and Spallation of Uranium (open access)

High Energy Fission and Spallation of Uranium

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
System: The UNT Digital Library
The Metabolism of Chyle Cholesterol in the Rat (open access)

The Metabolism of Chyle Cholesterol in the Rat

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 the chyle cholesterol esters are at least partially hydrolyzed; hydrolysis apparently does not occur in the plasma to any appreciable extent. After its entry into the liver exogenous cholesterol, if normally metabolized, presumably mixes with and becomes indistinguishable from cholesterol produced by endogenous synthesis."
Date: May 12, 1954
Creator: Biggs, Max William & Nichols, Alexander V.
System: The UNT Digital Library
Meson Mass Measurements III : The Pi-Mu Mass Ratio and Energy Balance in Pion Decay (open access)

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

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
System: The UNT Digital Library
On the Reaction p + d [right arrow] [mu]⁺ + t (open access)

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

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.
System: The UNT Digital Library
Theoretical Study of a Source of Intermediate Energy Neutrons (open access)

Theoretical Study of a Source of Intermediate Energy Neutrons

Abstract. An analysis is made of a proposal to obtain neutrons of 15-25 Kev energy by moderating fast neutrons in aluminum and then reflecting off titanium. The fluxes calculated do not significantly exceed those obtainable from a standard antimony-beryllium photoneutron source. Two appendices treat aspects of the transport of neutrons through a slab of finite thickness.
Date: January 7, 1954
Creator: Bludman, Sidney A.
System: The UNT Digital Library
Measurement of the Behavior of a Plasma in a Magnetic Field by Means of Probes (open access)

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

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 magnetic field impressed upon the source. The neutral positive ion-electron beam from the source has been projected against an increasing magnetic field and the reflected and transmitted signals have been recorded and compared as a function of the magnetic field. Probe signals from the plasma as it encounters the magnetic field are oscillatory, suggesting that magnetohydrodynamic phenomena are presented."
Date: December 1, 1954
Creator: Bostick, W. H.; Zizzo, S. G. & Cook, Buford
System: The UNT Digital Library
Behavior, a Balanced Network of Chemical Transformations (Biokinetics) (open access)

Behavior, a Balanced Network of Chemical Transformations (Biokinetics)

Abstract. While the concept of a biological system as a balanced network of chemical transformations is not a new one, experimental definition of specific systems has been lacking. This paper defines theoretically and experimentally a number of such networks and their behavior and response to some limited environmental changes.
Date: January 13, 1954
Creator: Bradley, D.F. & Calvin, M.
System: The UNT Digital Library
Reactions of the Refractory Silicides With Carbon and With Nitrogen (open access)

Reactions of the Refractory Silicides With Carbon and With Nitrogen

Abstract: The silicides of Ti, Zr, Ce and Nb were investigated to determine the phases present at temperatures around 2000 K. The reactions of silicides of Ti, Zr, Ce, Nb, Ta, Mo, and W with carbon were studied at these temperatures. Also a limited amount of work was done on the reactions of some of the silicides with nitrogen. The data have been used to establish ternary phase diagrams for the systems and to obtain upper and lower limits for the heats of formation of the silicides.
Date: April 29, 1954
Creator: Brewer, Leo, 1919-2005 & Krikorian, Oscar
System: The UNT Digital Library
Shock Ionization Source and Preliminary Experiments (open access)

Shock Ionization Source and Preliminary Experiments

Report discussing a study regarding the possibility of using shock ionization as a source for mirror-type thermonuclear reactors. This was tested in a one-inch vacuum system, and though initial ionization and temperature produced was low, the magnetic field extended the time of light emission and compressed the luminous region.
Date: November 1954
Creator: Coensgen, Frederic H.; Hales, Richard Wayne & Howard, J. C.
System: The UNT Digital Library
The Bevatron 9.9-Mev Proton Linear Accelerator (open access)

The Bevatron 9.9-Mev Proton Linear Accelerator

The Bevatron requires an intense source of high energy protons. The machine should accept monoenergetic protons for a duration of approximately 500 microseconds once every 6 seconds. To satisfy the requirements of small loss due to scattering by the gas in the accelerating chamber, a 9.9-Mev linear accelerator has been built and operated.
Date: July 1954
Creator: Cork, Bruce
System: The UNT Digital Library
Neutron Production by High-Energy Particles (open access)

Neutron Production by High-Energy Particles

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.
System: The UNT Digital Library
Summary of Recent External Neutron-Yield Measurements by the MnSO₄ Tank Method (open access)

Summary of Recent External Neutron-Yield Measurements by the MnSO₄ Tank Method

Report that summarizes unreported neutron-yield data for the MnSO₄ tank method. Other yield measurements had been reported in other quarterly reports prior to the completion of this one.
Date: September 17, 1954
Creator: Crandall, Walter E. & Millburn, George P.
System: The UNT Digital Library
Table Top 1 Circuitry (open access)

Table Top 1 Circuitry

Abstract: "This is a detailed report on the circuitry, the electrical components, and the electrical engineering problems of Table Top I, the 140-kilojoule experimental model of a magnetic mirror machine being developed at the University of California Radiation Laboratory, Livermore."
Date: July 21, 1954
Creator: Cummings, David B. & Wharton, Charles B.
System: The UNT Digital Library
Energy-Dependent Albedo (open access)

Energy-Dependent Albedo

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.
System: The UNT Digital Library
Instability Considerations for Various Difference Equations Derived from the Diffusion Equation (open access)

Instability Considerations for Various Difference Equations Derived from the Diffusion Equation

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
System: The UNT Digital Library
The Scattering of 10-Mev Protons on Carbon and Magnesium (open access)

The Scattering of 10-Mev Protons on Carbon and Magnesium

From Abstract: "In order to study the mechanism of excitation of nuclear levels by inelastic scattering, a scattering chamber of 36-inch diameter was constructed. The deflected beam of the Berkeley 60-inch cyclotron was brought out of the shielding by means of strong focusing magnets. Particles from the nuclear reactions were detected by either of two systems, a quadruple proportional-counter telescope, or a coincidence crystal spectrometer. Energy resolution was of the order of 2.5%."
Date: April 1954
Creator: Fischer, Gerhard E.
System: The UNT Digital Library
An Enhanced Magnetic Mirror Machine (open access)

An Enhanced Magnetic Mirror Machine

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 grids."
Date: July 15, 1954
Creator: Ford, Franklin C.
System: The UNT Digital Library
Reflection of Electrons by a Model Magnetic Mirror Machine (open access)

Reflection of Electrons by a Model Magnetic Mirror Machine

Abstract: A visualized electron beam has been reflected by a conventional magnetic mirror. Visualization of the beam path from the electron gun to and including the region of reflection was achieved by the "thread ray" technique of Wehnelt. The total current passing through a magnetic mirror has been measured as a function of the beam energy and angular momentum for H₂ over a range of pressures from 0.5 to 5 microns.
Date: May 28, 1954
Creator: Ford, Franklin C.
System: The UNT Digital Library
Table Top Ion Source (open access)

Table Top Ion Source

Report discussing experiments to evaluate ion sources for possible use in a thermonuclear reactor.
Date: June 16, 1954
Creator: Ford, Franklin O. & Zizzo, Samuel G.
System: The UNT Digital Library
Chelating Agents Applied to Ion Exchange Separations of Americium and Curium (open access)

Chelating Agents Applied to Ion Exchange Separations of Americium and Curium

The following report analyzes results from studies made while applying chelating agents to ion exchange separations of the elements americium and curium.
Date: March 23, 1954
Creator: Glass, Richard A.
System: The UNT Digital Library
Factors Influening Ammonia Decomposition in the Kjeldahl Method with Sealed Tube Digestion (open access)

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

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, {}
System: The UNT Digital Library
Some Aspects of the Radial Stability in a Magnetic Mirror Machine (open access)

Some Aspects of the Radial Stability in a Magnetic Mirror Machine

Abstract: "The radial motion of an ion in an axially symmetric magnetic field is discussed. It is pointed out that particles of constant velocity have clearly defined upper limits to their radial motion. This is a result of the other constant of the motion, the canonical angular momentum. These limits are independent of the number of times an ion is reflected from the mirrors, providing the field is truly axially symmetric."
Date: March 19, 1954
Creator: Henrich, Louis R.
System: The UNT Digital Library
The Production of Deuterons in High-Energy Nucleon Bombardment of Nuclei, and Its Bearing on Nuclear Charge Distribution (open access)

The Production of Deuterons in High-Energy Nucleon Bombardment of Nuclei, and Its Bearing on Nuclear Charge Distribution

Thesis discussing the study of deuterons produced at wide angles to a beam of 300 Mev neutrons and a beam of 300 Mev protons. It was observed that the deuterons are formed by "a two step process in which the incident nucleon, or its collision partner, is scattered and then picks up in the same nucleus." Some tritons are also observed, and it is thought that they are formed by the same process as the deuterons. From these findings, the author concludes that "for heavy nuclei, there is a nuclear skin rich in neutrons."
Date: July 24, 1954
Creator: Hess, Wilmot N.
System: The UNT Digital Library