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  • 1
    Electronic Resource
    Electronic Resource
    Fine iron particles formed in a sapphire crystal by the ion implantation technique (1998)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 83 (1998), S. 4631-4641 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The magnetic properties of iron atoms implanted into a sapphire crystal at a dose from 4×1016 to 1×1017 Fe/cm2 were investigated using conversion electron Mössbauer spectroscopy at low temperature. It was confirmed that the components in the Mössbauer spectra which have been assigned to the Fe4+ state so far by other researchers are caused by fine particles of metallic iron, and about 75% of the implanted iron atoms stabilize in the form of fine particles of α iron at high implantation dose. Growth of the fine particles was simulated with a computer, and the expected Mössbauer spectra were calculated considering the influence of the nearest neighbors and next-nearest neighbors on the magnetic hyperfine field of the iron atoms. The simulated spectra agrees well with the experimentally observed spectra on the whole. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.367248
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  • 2
    Electronic Resource
    Electronic Resource
    Radiation temperatures of soda-lime glass in its shock-compressed liquid state (1998)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 83 (1998), S. 1711-1716 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A radiation pyrometer in conjunction with a two-stage light gas gun has been used to measure shock temperatures of soda-lime glass in the pressure range 54–109 GPa. This pyrometer consists of two parts, i.e., an optical multichannel analyzer which measures the radiation spectrum over the visible range (∼450 nm window) and a four-channel photomultiplier tube system which records the time-varying behavior of shock temperatures. The measured radiation spectra are compared with the Planck function to estimate the shock temperatures and emissivities. Obtained spectra are well fit by the Planck function with moderate emissivities, indicating that relatively homogeneous thermal radiation is the main component of radiation. Obtained shock temperatures range from 2800 (100) to 5700 (300) K and they seem to represent shock temperatures of liquefied soda-lime glass (melt). The Hugoniot is well described by a linear relation, us=0.14(21)+1.92(5)up km/s. It is deduced that the radiation from liquids under shock compression, in contrast to the radiation from solids under shock compression, is more thermal and fits the Planck function well, even at lower temperatures. This is because the radiation spectrum of solids under compression often shows nonthermal radiation due to heterogeneous deformation, while the radiation spectrum of liquids under compression could not have such a nonthermal component. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.366889
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  • 3
    Electronic Resource
    Electronic Resource
    Grazing by a resident macrozooplankton community and non-resident Daphnia carinata King: A preliminary in situ incubation study (1998)
    Melbourne, Australia : Blackwell Science Pty
    Lakes & reservoirs 3 (1998), S. 0 
    Details
    ISSN: 1440-1770
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geography
    Notes: A 24 h incubation study was conducted in situ in Manly Dam reservoir, Sydney, Australia. The study aimed to evaluate the relative effectiveness of grazing on phytoplankton by a resident macrozooplankton community, dominated by the cladoceran Ceriodaphnia and some copepods, in comparison with grazing by added, non-resident Daphnia carinata in the absence of the resident macrozooplankton community. Although there was some variability in the measured grazing rates among incubation bottles (volume: 1.28 L), D. carinata with a mean body size of 30.8 μg dry weight were more efficient grazers than the reservoir macrozooplankton community with a mean body size of 2.5 μg dry weight. The weight-specific clearance rate of D. carinata was 2–65 times higher than that of the resident reservoir community for five taxa of reservoir phytoplankton examined. In comparing the evidence from the literature on the limited ability of D. carinata to graze on cyanobacteria, a management strategy using D. carinata for the reduction of phytoplankton biomass may need to be considered separately from one designed to specifically control undesirable taxa, such as the cyanobacteria Microcystis and Anabaena.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1440-1770.1998.00073.x
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  • 4
    Electronic Resource
    Electronic Resource
    Beam commissioning of the SPring-8 synchrotron (1998)
    Chester : International Union of Crystallography (IUCr)
    Journal of synchrotron radiation 5 (1998), S. 357-359 
    Details
    ISSN: 1600-5775
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences , Physics
    Notes: The beam commissioning of the SPring-8 synchrotron was started in December 1996. In the first ten days, the coarse tuning of the pulse magnets for beam injection from the linac, and the excitation pattern of the dipole and the quadrupole magnets, were accomplished during energy ramping of the beam. The acceleration of the beam up to 8 GeV proceeded smoothly. From January to February 1997, the fine-tuning of the synchrotron was continued and the operating parameters of all of the synchrotron equipment were decided.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0909049597013204
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  • 5
    Electronic Resource
    Electronic Resource
    The Aspergillus nidulans CCAAT-binding factor AnCP/AnCF is a heteromeric protein analogous to the HAP complex of Saccharomyces cerevisiae (1998)
    Springer
    Molecular genetics and genomics 257 (1998), S. 404-411 
    Details
    ISSN: 1617-4623
    Keywords: Key wordsAspergillus ; CCAAT ; HapC ; Hap complex ; DNA binding
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The Aspergillus nidulans hapC gene was expressed as a fusion protein with MalE or glutathione-S-transferase (GST) in Escherichia coli, and used for the purification of HapC and the preparation of anti-HapC antiserum. The CCAAT-binding factor AnCP/AnCF contains a component with an approximate molecular mass of 32 kDa that cross-reacts with the antibody. The MalE-HapC fusion protein was able to replace authentic HapC in AnCP when incubated under appropriate conditions. Furthermore, reconstitution experiments with recombinant HapC, yHAP2 and yHAP5 polypeptides showed that all three polypeptides were required for the assembly of a complex capable of binding to CCAAT-containing taaG2 promoter DNA. The relationship between AnCP/AnCF and the Saccharomyces cerevisiae HAP complex is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004380050664
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  • 6
    Electronic Resource
    Electronic Resource
    Metal Levels in Rain Water from Kobe City in Japan (1998)
    Springer
    Bulletin of environmental contamination and toxicology 60 (1998), S. 892-897 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001289900711
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  • 7
    Electronic Resource
    Electronic Resource
    Vanadium Content of Cigarettes (1998)
    Springer
    Bulletin of environmental contamination and toxicology 61 (1998), S. 276-280 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001289900759
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  • 8
    Electronic Resource
    Electronic Resource
    Inhibitory conditioning for carrot somatic embryogenesis in high-cell-density cultures (1998)
    Springer
    Plant cell reports 18 (1998), S. 2-6 
    Details
    ISSN: 1432-203X
    Keywords: Key words Carrot ; Somatic embryogenesis ; Conditioned medium ; High-cell-density culture
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Carrot somatic embryogenesis was strongly inhibited in high-cell-density cultures. This inhibition was not caused by depletion of nutrients or physical damage but by factor(s) released into the culture medium from cells during culture. A conditioned medium prepared by eliminating cells after high-cell-density culture inhibited somatic embryogenesis. The degree of inhibition increased with the amount of conditioned medium. A dialysis experiment revealed that the molecular weight of the inhibiting factor(s) was below 3,500. We also found that the conditioned medium contained a high-molecular-weight factor(s), which stimulated somatic embryogenesis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002990050522
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  • 9
    Electronic Resource
    Electronic Resource
    A vanishing theorem for modular symbols on locally symmetric spaces (1998)
    Springer
    Commentarii mathematici Helvetici 73 (1998), S. 45-70 
    Details
    ISSN: 1420-8946
    Keywords: Key words. Modular symbols, semisimple Lie group, Zuckerman-Vogan module, Matsushima-Murakami formula, modular varieties, discrete decomposable restriction, bounded symmetric domain, discontinuous group, symmetric space.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract. A modular symbol is the fundamental class of a totally geodesic submanifold $ \Gamma'\backslash G'/K' $ embedded in a locally Riemannian symmetric space $ \Gamma \backslash G / K $ , which is defined by a subsymmetric space $ G'/ K' \hookrightarrow G / K $ . In this paper, we consider the modular symbol defined by a semisimple symmetric pair (G,G'), and prove a vanishing theorem with respect to the $ \pi $ -component $ (\pi \in \widehat {G}) $ in the Matsushima-Murakami formula based on the discretely decomposable theorem of the restriction $ \pi |_{G'} $ . In particular, we determine explicitly the middle Hodge components of certain totally real modular symbols on the locally Hermitian symmetric spaces of type IV.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s000140050045
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  • 10
    Electronic Resource
    Electronic Resource
    Evidence for a neutron skin in 20N (1998)
    Springer
    The European physical journal 1 (1998), S. 15-17 
    Details
    ISSN: 1434-601X
    Keywords: PACS:21.10.Ft Charge distribution – 27.30.+t $20 \leq A \leq 38$
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract. Nuclear interaction and charge-changing cross sections were measured for 950 ⋅A MeV 20N, 20O, 20F, 20Ne, 20Na and 20Mg beams incident on a carbon target. The experimental results are compared to other data, in particular to those obtained for stable nuclei. Root mean square nuclear matter radii and upper limits of root mean square proton radii are derived from the experimental data. Evidence is presented for the existence of a neutron skin in 20N.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100500050026
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