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  • Physics  (7)
  • Bar gene  (2)
  • Deuterium oxide  (2)
  • PIC  (2)
  • 1
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    The vespa process for the analysis of seismic signals (1971)
    In:  Nature, Warszawa, Army Corps of Engineers, Woodward-Clyde Consultants, vol. 232, no. 5, pp. 8-13, pp. 1013, (ISBN: 0-12-018847-3)
    Details
    Publication Date: 1971
    Keywords: Seismic networks ; Seismic arrays ; PIC ; ves
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    BIBLIOGRAPHY SEISMOLOGY
  • 2
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    Pattern recognition techniques for the interpretation of vespagrams and beamsplit data (1971)
    MIT Lincoln Lab.
    In:  Semiannual Technical Summary Report, Lexington, Mass., MIT Lincoln Lab., vol. 10, no. rapport C 20754-9.1 (2.2), pp. 38-41
    Details
    Publication Date: 1971
    Keywords: Artificial intelligence (AI) ; Pattern recognition ; Detectors ; PIC ; ves ; Seismic networks ; Seismic arrays ; Discrimination ; Data analysis / ~ processing
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    BIBLIOGRAPHY SEISMOLOGY
  • 3
    Electronic Resource
    Electronic Resource
    The effect of deuterium oxide on protein turnover in Lemna minor (1979)
    Springer
    Planta 146 (1979), S. 229-236 
    Details
    ISSN: 1432-2048
    Keywords: Density labelling ; Deuterium oxide ; Lemna ; Protein turnover
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Lemna minor fronds transferred to a sterile culture medium containing 50% (v/v) deuterium oxide (2H2O) rapidly undergo a loss of soluble protein with a corresponding increase in free amino acids. The loss of protein is due to two factors: (i) the inhibition of protein synthesis for 4 h followed by a slower rate of synthesis than normal, (ii) a rapid 9–10 fold increase in protein degradation. In plants grown for longer periods (3–6 days) in 50% 2H2O medium, protein synthesis is inhibited by 20% and the rate constant of degradation is 2–3 times that measured in fronds growing in normal (H2O containing) complete medium. The initial loss of protein is not due to the breakdown of any specific protein fraction. Investigation of several enzymes indicates that all proteins are catabolised in response to 2H2O treatment. The implications of these results with regard to the interpretation of density-labelling experiments are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00388237
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    The mechanism of deuterium oxide-induced protein degradation in Lemna minor (1980)
    Springer
    Planta 148 (1980), S. 374-380 
    Details
    ISSN: 1432-2048
    Keywords: Deuterium oxide ; Lemna ; Protein degradation ; Stress (D2O) ; Tonoplast properties
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Transfer of Lemna minor fronds to culture medium containing 50% (v/v) deuterium oxide induces a large increase in the rate of protein breakdown, which is not due to an increase in the activity of acidic or neutral proteolytic enzymes or peptidases. Biochemical and ultrastructural evidence indicates that deuterium oxide affects the properties of certain membranes, particularly the tonoplast, and allows vacuolar proteolytic enzymes to pass into the cytoplasm and cause the increased protein breakdown.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00388126
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  • 5
    Electronic Resource
    Electronic Resource
    A simple system for pea transformation (1997)
    Springer
    Plant cell reports 16 (1997), S. 513-519 
    Details
    ISSN: 1432-203X
    Keywords: Key wordsAgrobacterium tumefaciens ; Pea transformation ; Cotyledonary meristem ; Bar gene ; Phosphinothricin resistance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The lateral cotyledonary meristems of germinating Pisum sativum cv. Puget seeds were used to develop a reproducible Agrobacterium tumefaciens-mediated trans-formation system. This procedure exhibits distinct advantages over those previously reported, in that it uses dry seed as starting material, and the highly regenerable cotyledonary meristems rapidly produce transgenic shoots without an intermediate callus phase. This transformation regime facilitates the rapid generation of phenotypically normal, self-fertile plants containing functional transgenes inherited in a Mendelian fashion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01142315
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  • 6
    Electronic Resource
    Electronic Resource
    A simple system for pea transformation (1997)
    Springer
    Plant cell reports 16 (1997), S. 513-519 
    Details
    ISSN: 1432-203X
    Keywords: Agrobacterium tumefaciens ; Pea transformation ; Cotyledonary meristem ; Bar gene ; Phosphinothricin resistance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The lateral cotyledonary meristems of germinatingPisum sativum cv. Puget seeds were used to develop a reproducibleAgrobacterium tumefaciens-mediated transformation system. This procedure exhibits distinct advantages over those previously reported, in that it uses dry seed as starting material, and the highly regenerable cotyledonary meristems rapidly produce transgenic shoots without an intermediate callus phase. This transformation regime facilitates the rapid generation of phenotypically normal, self-fertile plants containing functional transgenes inherited in a Mendelian fashion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01142315
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  • 7
    Electronic Resource
    Electronic Resource
    Electroinitiated polymerization of arylvinyl monomers (1979)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Chemistry Edition 17 (1979), S. 1411-1418 
    Details
    ISSN: 0360-6376
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The electroinitiated polymerizations of styrene, 2-vinylnaphthalene, and 9-vinylanthracene were compared in sulfolane and acetone solvents in the presence of ZnCl2. The relative orders of polymerization rates and polymerization efficiencies, in both solvents, were 9-vinylanthracene 〉 2-vinylnaphthalene 〉 styrene, with faster rates and higher efficiencies occurring in sulfolane. Data obtained from viscosity and gel permeation chromatography (GPC) studies indicate that the molecular weights of the polymers produced in these systems are extremely low, 〈5000. Chemical composition and infrared (IR) spectral data suggest that abnormal transfer reactions (possibly from solvent) may be occurring in the electroinitiated 9-vinylanthracene polymerizations. The polymerization mechanism appears to be cationic in these monomer-solvent systems with ZnCl2.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1979.170170515
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  • 8
    Electronic Resource
    Electronic Resource
    Photoinitiation and electroinitiation in the polymerization of 2-vinylnaphthalene (1977)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Chemistry Edition 15 (1977), S. 2673-2684 
    Details
    ISSN: 0360-6376
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The zinc chloride-catalyzed polymerization of 2-vinylnaphthalene (VN) with both photoinitiation and electronitiation methods was examined. Good yields were obtained with both methods, the electroinitiated process being somewhat faster. The mechanism for polymerization initiation was investigated through a detailed comparison of the kinetics. Both initiation methods show a similar response to increasing input energy and to change in salt to monomer mole ratio. Both methods indicate formation of a ZnCl2-(2-VN)2 complex as intermediate with the formation of the species being rate-determining. These results, together with other similar investigations, are then used to deduce a mechanism that involves the formation of an electronically excited donor-acceptor complex. It is argued that in certain salt-stabilized, electron-delocalized, aromatic systems, such excitation is possible in electroinitiation.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1977.170151112
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  • 9
    Electronic Resource
    Electronic Resource
    Electroinitiated polymerization of 2-vinylnaphthalene (1977)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Chemistry Edition 15 (1977), S. 1563-1571 
    Details
    ISSN: 0360-6376
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: As part of a program to extend the range of donor-acceptor-initiated polymerization processes, the electroinitiation of 2-vinylnaphthalene in a zinc chloride-sulfolane solution has been studied. Good conversion yields of well-characterized (NMR, IR, GPC, elemental analysis) poly(vinylnaphthalene) were obtained with the process showing several mechanistic similarities to other donor-acceptor salt electropolymerization systems.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1977.170150704
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  • 10
    Electronic Resource
    Electronic Resource
    Electrochemically initiated polymerization of styrene with tetraalkyl and -aryl group VA halide support electrolytes (1977)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Chemistry Edition 15 (1977), S. 1555-1562 
    Details
    ISSN: 0360-6376
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The electrochemically initiated polymerization of styrene in methylene chloride solvent with the use of platinum electrodes and tetraalkyl and -aryl group VA halides (i.e., quaternary ammonium, phosphonium, and arsonium compounds) as electrolyte has been investigated. The order of reactivity of the electrolytes with respect to polymerization rate and initiation efficiency was found to be: arsonium 〉 phosphonium 〉 ammonium. Mechanisms involving the electroreduction of the group VA quaternary halides to species capable of electroinitiating polymerization are postulated. The observed losses in solution conductivities during polymerization with the quaternary phosphonium and arsonium electrolytes indicate possible interaction between the initiating radical-ionic species and the supporting electrolyte. In an attempt to further elucidate the mechanism of initiation in these systems, a separate series of experiments, employing the nonpolymerizing monomer, 1,1-diphenylethylene, has been carried out.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1977.170150703
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