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First Annual Report : Operation of the Multi-Effect Multi-Stage Flash Distillation Plant (Clair Engle), San Diego, California
Report describing the first year of operations of the Multi-Effect Multi-Stage Flash Distillation Plant, known as the Senator Clair Engle Plant, in San Diego, California. A description of its organization, operations, and design are provided.
Date:
1970
Creator:
unknown
System:
The UNT Digital Library
Thermal analysis of LOFT containment vessel penetrations S-5E and S-6A
Thermal analysis of the LOFT containment vessel penetration S-6A was conducted for steady-state operation and blowdown transients. Penetration S-6A is a 20-inch pipe through which passes a 10-inch pipe from the steam generator containing 600/sup 0/F steam. Recommendations for penetration S-5E were based on the analysis of penetration S-6A. Penetration S-5E is an 18-inch pipe through which pass a 4-inch pipe containing the steam generator feedwater at 430/sup 0/F and a 0.5-inch pipe containing sample water at 600/sup 0/F. The thermal analysis is necessary to determine the maximum temperature gradient in the containment vessel around the penetrations. The outside of the penetrations protrude into a room adjacent to the containment vessel which will be maintained at a minimum temperature of 50/sup 0/F. The steady-state temperature inside the containment vessel was assumed to be 100/sup 0/F. Table I of LOFT Containment Vessel Specification S-1 was used for inside transient temperatures.
Date:
April 21, 1970
Creator:
Condie, K.G.
System:
The UNT Digital Library
Electrochemically Controlled Ion-Exchange
"For the past several years, the Rocketdyne Research Division has, under the sponsorship of the Office of Saline Water, engaged in a study of the application of electrochemical techniques to the demineralization of brackish water. Early work in this program was concerned with a mechanistic study of electrochemically induced demineralization at chemically treated carbon electrodes. The results of this study led to the development of a process called electrochemically controlled ion-exchange" (p. 2).
Date:
1970
Creator:
Evans, S.; Accomazzo, M. A.; Ladacki, M. & Lossett, K. A.
System:
The UNT Digital Library
Saline Ground-Water Resources of the Rio Grande Drainage Basin: A Pilot Study
Report presenting a study to evaluate the saline ground-water resources of the Rio Grande drainage basin of Colorado, New Mexico, and Texas for the potential application as feed water for desalting plants.
Date:
1970
Creator:
Kelly, T. E.; Myers, B. N. & Hershey, L. A.
System:
The UNT Digital Library
ELECTROCHEMISTRY OF EXCITED MOLECULES: PHOTO-ELECTROCHEMICALREACTIONS OF CHLOROPHYLLS. I
Semiconductors with a sufficiently large energy gap, in contact with an electrolyte, can be used as electrodes for the study of electrochemical reactions of excited molecules. The behavior of excited chlorophyll molecules at single crystal ZnO-electrodes has been investigated. These molecules inject electrons from excited levels into the conduction band of the electrode, thus giving rise to an anodic photocurrent. The influence of various agents on this electron transfer has been studied. In the presence of suitable electron donors (e.g., hydroquinone, phenylhydrazine) in the electrolyte chlorophyll molecules, absorbing quanta, mediate the pumping of electrons from levels of the reducing agents into the conduction band of the semiconductor-electron acceptor. The electron capture by the semiconductor electrode is irreversible, when an adequate electrochemical gradient is provided in the electrode surface. An experimental technique for the study of the kinetics of photoelectrochemical reactions of chlorophyll molecules is introduced and a theoretical approach for its calculation is given. Some properties of excited chlorophyll at semiconductor electrodes (unidirectional electron transfer, highly efficient charge separation, chlorophyll as electron pump and able to convert electronic excitation into electric energy) show similarity to the behavior of chlorophyll in photosynthetic reaction centers.
Date:
December 1, 1970
Creator:
Tributsch, Helmut & Calvin, Melvin.
System:
The UNT Digital Library
BRANCHED ALKANES FROM BLUE-GREEN ALGAE
Branched alkanes from blue-green algae were separated on a 750 feet high resolution capillary gas chromatographic column. The mixture was found to be 90% of 1:1 ratio 7-methyl, and 8-methyl-heptadecane, and 10% of 6-methylheptadecane. An optical rotation of +2.5 {+-} 0.5 was obtained on a 5 mg of mixture.
Date:
August 1, 1970
Creator:
Han, Jerry & Calvin, Melvin.
System:
The UNT Digital Library
PARTICLE DETECTORS BASED ON NOBLE LIQUIDS
In order to build a thin particle detector with 10 micron spatial resolution and automatic readout, the avalanche of ionization electrons in high electric fields in liquid argon and liquid xenon has been studied. We present a scheme using an array of points that could be used to make a reliable liquid argon filled detector. The avalanche pulses in liquid xenon have a rise time more than three orders of magnitude faster than that in liquid argon, suggesting that the positive charge carriers are holes, and making possible a detector with a time resolution of better than 100 nanoseconds. A direct observation of hole conduction is described.
Date:
September 1, 1970
Creator:
Muller, Richard A.; Derenzo, Stephen E.; Smits, Robert G.; Zaklad, Haira & Alvarez, Luis W.
System:
The UNT Digital Library
HYDROCARBON CONSTITUENTS OF ICELAND LEAF FOSSIL
The hydrocarbon content of leaf fossils from Iceland has been investigated by gas chromatography-mass spectrometry. The distribution patterns of normal hydrocarbons, branched hydrocarbons, and cyclic hydrocarbons are compared to those of present-day living organisms. The diagenetic pathways of these hydrocarbons are discussed.
Date:
October 1, 1970
Creator:
Han, Jerry & Calvin, Melvin.
System:
The UNT Digital Library
Backward np Scattering With a Polarized Target
The authors have measured the polarization parameter P in neutron-proton elastic scattering near the backward direction, using a polarized proton target. Measurements covered the range of incident neutron moment from 1.0 to 5.5 GeV/c and of four-momentum transfer squared u from -0.005 to -0.5 (GeV/c){sup 2}. Forward going protons were detected by means of a wire-spark-chamber spectrometer. Slow neutrons near 90 deg lab angle were detected in coincidence by means of an array of plastic scintillation counters. P was determined from the change in counting rate I of scattered particles upon reversal of the target polarization P{sub T} according to I = I{sub 0}[l + P(P{sub T} {center_dot} k incident neutron x k final neutron/sin {theta} final neutron)]. They find that P is consistently negative and shows no marked structure as a function of u and of incident momentum. The data roughly follow the simple form P = -0.5 {radical}-u/m{sub p}.
Date:
January 1970
Creator:
Robrish, Peter R.; Chamberlain, Owen; Field, Richard D., Jr.; Fuzesy, Raymond Z.; Gom, W.; Morehouse, Charles C. et al.
System:
The UNT Digital Library
CROSSING OF AN INCOHERENT INTEGRAL RESONANCE IN THE ELECTRON RING ACCELERATOR
In one mode of operation of an electron ring accelerator (ERA), at the end of compression rings are slowly moved through the radial integral betatron resonance Q{sub r} = 1. Although the coherent radial oscillation frequency of the ring as a whole remains below unit, the oscillation frequencies of individual electron are (incoherently) caused to pass through the resonance because of the additional focusing from ions trapped in the ring. In this paper the effect of field errors on ring major and minor radii is evaluated--theoretically--for the cases in which the spread in the square of the electron oscillation frequency ({Delta}{sup 2}) is (a) much larger and (b) much smaller than the contribution to the square of the oscillation frequency from the ions ({Lambda}{sup 2}). It is shown that for the ERA, where case (b) applies, the increase in ring minor dimensions, for given field errors and rate of resonance crossing, is less than in case (a) by a factor of ({Delta}/{Lambda}){sup 2}. Numerical examples show that the degradation of ring quality in case (b) should, with suitable attention to the design and construction of the ERA apparatus, be acceptably small.
Date:
January 26, 1970
Creator:
Pellegrini, Claudio & Sessler, Andrew M.
System:
The UNT Digital Library
METHANE INCORPORATION BY PROCARYOTIC PHOTOSYNTHETICMICROORGANISMS
The procaryotic photosynthetic microorganisms Anacystis nidulans, Nostoc and Rhodospirillum rubrum have cell walls and membranes that are resistant to the solution of methane in their lipid components and intracellular fluids. But Anacystis nidulans, possesses a limited bioxidant system, a portion of which may be extracellularly secreted, which rapidly oxidizes methane to carbon dioxide. Small C{sup 14} activities derived from CH{sub 4} in excess of experimental error are detected in all the major biochemical fractions of Anacystis nidulans and Nostoc. This limited capacity to metabolize methane appears to be a vestigial potentiality that originated over two billion years ago in the early evolution of photosynthetic bacteria and blue-green algae.
Date:
August 1, 1970
Creator:
Norton, Charles J.; Kirk, Martha & Calvin, Melvin
System:
The UNT Digital Library
ISOLEUCYL-tRNA-SYNTHETASE A FLUORESCENCE STUDY OP THE BINDINGPROPERTIES OF THE SYNTHETASE FROM ESCHERICHIA COLI
Fluorescence properties of purified isoleucyl-tRNA-synthetase isolated from E. coli B have been studied. No changes in the quantum yield, energy or polarization of the emission were detected in the presence (either individually or in combinations) of the substrates and cofactors required for activation of L-isoleucine. In 2.5 M urea enzyme activity and intrinsic fluorescence intensity (at 340 nm) each decrease with time, showing similar kinetics and rate constants. The rate of this decay is reduced in the presence of ligands which can bind to the enzyme and the effect has been used to measure dissociation constants for enzyme-ligand complexes. Values have been obtained for the complexes between enzyme and L-isoleucine (K{sub diss} = 2.5 x 10{sup -5} M), L-valine (K{sub diss} = 3.0 x 10{sup -4} M), ATP (K{sub diss} = 1.5 x 10{sup -4} M) and PP{sub i} (K{sub diss} = 2.0 x 10{sup -4} M) at 25{sup o}. The effects of ionic strength, and the temperature dependence and urea concentration dependence of L-isoleucine binding have also been studied. Magnesium ions, which are required for catalysis, do not greatly affect the binding of single substrates, but changes are seen in the presence of ATP and L-isoleucine together. The magnesium …
Date:
November 1, 1970
Creator:
Penzer, Geoffrey R.; Bennett, Edward L. & Calvin, Melvin.
System:
The UNT Digital Library
SEARCH FOR T-VIOLATION IN THE INELASTIC SCATTERING OF ELECTRONSFROM A POLARIZED PROTON TARGET
The authors have searched for an asymmetry in the inelastic scattering of electrons from a polarized proton target in the region of resonance excitation, at values of four-momentum transfer squared of 0.4, 0.6 and 1.0 (GeV/c){sup 2}. Data were also taken using an incident positron beam in order to distinguish any possible effect of time-reversal violation from that due to higher-order ({alpha}{sup 3}) contributions to the scattering. No sizeable violation of time-reversal invariance was found.
Date:
March 1, 1970
Creator:
Rock, Stephen; Borghini, Michel; Chamberlain, Owen; Fuzesy,Raymond Z.; Morehouse, Charles C.; Powell, Thomas et al.
System:
The UNT Digital Library
PHOTOCHEMICAL COUPLING OF BENZO [a]PYEENE WITH 1-METHYLCYTOSINE.POSSIBLE MECHANISM OF THE LINKAGE IN VIVO
Irradiation of benzo[a]pyrene 1 with 1-methylcytosine hydrochloride 2a (molar ratio 1:10) at 3500 {angstrom} in methanol-acetone produces the 6-(1-methylcytos-5-yl)-benzo[pa]pyrene 3. The structure of the photoproduct shows the hydrocarbon bound through the most active 6-carbon atom to the nucleophilic 5-position of the base. The specific substitution of both moieties combined with other data allows them to understand the carcinogenic activity of the hydrocarbon and thereby to propose a possible mechanism of their linkage in vivo. In this model, the K region does not play a role in triggering the cancer process.
Date:
August 1, 1970
Creator:
Cavalieri, E. & Calvin, M
System:
The UNT Digital Library
Little known facts about the psychoactive drugs.
This report
Date:
July 22, 1970
Creator:
Quimby, Freeman H.
System:
The UNT Digital Library
Value Added tax: A Selected Collection of Recent Literature, with Supplementary References
This report is a selected collection of recent literature, with supplementary references
Date:
November 1970
Creator:
Kohnen, Harold A.
System:
The UNT Digital Library
Summary of Provisions of the economic opportunity act of 1964, as amended, and amounts authorized and appropriated for the office of economic opportunity
This report
Date:
April 22, 1970
Creator:
Zachariasen, Ellen
System:
The UNT Digital Library
Resolved: That the Federal government should adopt programs of compulsory wage and price controls.
This report is a preliminary Bibliography on the Intercollegiate debate topic
Date:
July 27, 1970
Creator:
Knight, Edward
System:
The UNT Digital Library
U.S. Policy Toward Asia and the Pacific
This report is a chronology of significant events
Date:
November 2, 1970
Creator:
Marjorie Ann Brownie
System:
The UNT Digital Library
The Soviet Union and the Arab-Israeli Crisis
This report is a brief survey of Russia's role in the middle east and the implications for the United States.
Date:
July 13, 1970
Creator:
Whelan, Joseph G.
System:
The UNT Digital Library
Importance, Manufacture, Distribution, and storage of explosive materials
This report is a digest of major provisions of title XI of the organized crime control act of 1970
Date:
December 10, 1970
Creator:
Dempsey, Jean
System:
The UNT Digital Library
Strategic arms limitation talks (salt)
This report is a chronology
Date:
November 1970
Creator:
Wu, Leneice N.
System:
The UNT Digital Library
Legislation and Proposals in the Ninety- First Congress Relating to Student Financial Aid and Campus Disorders
This report
Date:
June 10, 1970
Creator:
Kathryn Haley
System:
The UNT Digital Library
Independent Research and Development
This report is a survey of the 1970 house and Senate Hearings
Date:
July 24, 1970
Creator:
John D. Homfeld
System:
The UNT Digital Library