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  • 1
    Electronic Resource
    Electronic Resource
    Pulse radiolysis studies of berkelium(III): preparation and identification of berkelium(II) in aqueous perchlorate media (1988)
    s.l. : American Chemical Society
    Inorganic chemistry 27 (1988), S. 597-598 
    Details
    ISSN: 1520-510X
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ic00277a005
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  • 2
    Electronic Resource
    Electronic Resource
    Occurence and regulation of Calvin cycle enzymes in non-autotrophic Beggiatoa strains (1988)
    Springer
    Archives of microbiology 151 (1988), S. 15-19 
    Details
    ISSN: 1432-072X
    Keywords: Begglatoa spp. ; Ribulose-1,5-bisphosphate carboxylase ; Phosphoribulokinase ; Regulation of Calvin-cycle enzymes ; Heterologous gene-probe hybridization ; Non-autotrophic sulfur bacteria
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract To date only marine strains of the genus Beggiatoa have been proven to have the capacity for lithoautotrophic growth. The two best characterized freshwater strains (B18LD and OH-75-2a) — previously tested with no evidence of autotrophic potential — were reinvestigated in the current study. Heterotrophically grown cells from exponential or early stationary phase showed extremely low ribulose-1,5-bisphosphate carboxylase/oxygenase (RuBisCO) activities (0.002–0.2 nmol CO2·mg prot-1 min-1). After acetate limitation terminated growth both strains demonstrated increased RuBisCO activity with a maximum achieved 1–3 days into stationary phase. For a single growth cycle, activity could increase by more than 100-fold (strain OH-75-2a), but the highest activity achieved was less than 5% of that observed in a lithoautotrophic control. Phosphoribulokinase activity was approximately an order of magnitude greater than the corresponding RuBisCO activity and showed a similar pattern of regulation. A gene probe derived from the RuBisCO large subunit gene of Anacystis nidulans hybridized strongly with DNA from strain OH-75-2a and the autotrophic marine control but not with DNA from strain B18LD.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00444662
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  • 3
    Electronic Resource
    Electronic Resource
    Liouville operator resolvent method applied to the hubbard dimer (1986)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 8 (1986), S. 625-634 
    Details
    ISSN: 0392-6737
    Keywords: General theories and computational techniques
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Riassunto Si considera il problema di due loci atomici tipo idrogeno (statis solamente) accoppiati con una matrice hopping. Si impiega un nuovo formalismo, il metodo risolutore dell’operatore di Liouville, per valutare la funzione termodinamica di Green per la particella singola per questo sistema. Si discutono anche dettagli del metodo.
    Notes: Summary The problem of two hydrogenlike atomic sites (s-shells only) coupled via a hopping matrix is considered. We employ a new formalism, the Liouville operator resolvent method, to evaluate the single-particle thermodynamic Green’s function for this system. Details of the method are also discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02451087
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  • 4
    Electronic Resource
    Electronic Resource
    APPARATUS FOR DETERMINATION OF SPORE-DESTRUCTION RATES (1937)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 2 (1937), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1937.tb16527.x
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  • 5
    Electronic Resource
    Electronic Resource
    Oligonucleotide-Directed Mutagenesis of the lpd Gene of Escherichia coli (1989)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 573 (1989), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1989.tb15029.x
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  • 6
    Electronic Resource
    Electronic Resource
    Immigration of Insects into the British Isles (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 9-10 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] ABOUT a hundred years ago, it was gradually 〉 dawning on British entomologists that many of the butterflies in this country might be immigrants from abroad. Among the species first suspected of this habit were the Clouded Yellow (Colias. croceus) and the Pale Clouded Yellow (C. hyale). It is ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/135009a0
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  • 7
    Electronic Resource
    Electronic Resource
    Fertile Sugar Cane × Millet Hybrid (1936)
    [s.l.] : Nature Publishing Group
    Nature 137 (1936), S. 830-830 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A CONSIDERABLE number of Saccharum × Sorghum hybrids have been produced at this Station during the breeding seasons of 1933–35. The accompanying photograph (Fig. 1) shows seed germinating in the influorescence of a hybrid between the sugar cane variety P.O.J. 2725 ♀ and Guinea corn ♂ (Sorghum ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/137830a0
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  • 8
    Electronic Resource
    Electronic Resource
    Velocity Distribution of Thermal Neutrons (1938)
    [s.l.] : Nature Publishing Group
    Nature 142 (1938), S. 829-829 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] WE have been developing during the past year an apparatus to make possible the study of neutrons of known energies within the thermal region. In principle, the apparatus consists of a device for producing a burst of neutrons lasting about 0.5 millisecond at intervals of 5 milliseconds. The ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/142829a0
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  • 9
    Electronic Resource
    Electronic Resource
    Homogeneous fine-grained Mn-Zn ferrites by sintering of colloidally precipitated powders (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 64 (1988), S. 5644-5646 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Colloidally precipitated powders were investigated for the synthesis of chemically homogeneous, uniformly fine-grained Mn-Zn ferrites. The process consists of the atomized dispersion of an aqueous solution of Mn, Zn, and Fe nitrates in an agitated solution of 1M ammonium hydroxide. This results in the coprecipitation of a fine colloidal mixture of Mn, Zn, and Fe hydroxides. The mixture is filtered, washed, dried, and heat treated to form agglomerated powders. The agglomerated powders are reduced in size and sintered after cold compaction. Sintering was performed at temperatures of 1100–1250 °C with oxygen partial pressures from 0 to 500 ppm in argon. Magnetic permeability and disaccommodation were measured on selected samples after an initial 0.5–5.0 Oe decaying sinusoidal field was applied to the specimens to excite time varying permeability. The permeability variation depended strongly on the magnitude of this excitation; both disaccommodation and accommodation were observed. The duplex structure typically associated with severe discontinuous grain growth was not observed for either of the two compositions examined over the range of sintering temperatures studied. Low levels of porosity were seen in samples sintered at 1150 and 1250 °C.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.342521
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  • 10
    Electronic Resource
    Electronic Resource
    Scanning capacitance microscopy on a 25 nm scale (1989)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 55 (1989), S. 203-205 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A near-field capacitance microscope has been demonstrated on a 25 nm scale. A resonant circuit provides the means for sensing the capacitance variations between a sub-100-nm tip and surface with a sensitivity of 1×10−19 F in a 1 kHz bandwidth. Feedback control is used to scan the tip at constant gap across a sample, providing a means of noncontact surface profiling. Images of conducting and nonconducting structures are presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.102096
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