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  • 1
    Monograph available for loan
    Monograph available for loan
    Physics meets mineralogy : condensed-matter physics in geosciences (2000)
    Cambridge [u.a.] : Cambridge Univ. Press
    Details Availability
    Call number: 11/M 04.0513
    Description / Table of Contents: describes the interaction between geophysics and condensed matter physics. Condensed matter physics leads to a first-principles way of looking at crystals, enabling physicists and mineralogists to study the rich and sometimes unexpected behavior that minerals exhibit under the extreme conditions, such as high pressure and high temperature, found deep within the earth. Leading international researchers from both geosciences and condensed matter physics discuss the state-of-the-art of this interdisciplinary field. A summary for specialists and graduate students researching mineralogy and crystallography.
    Type of Medium: Monograph available for loan
    Pages: XVIII, 397 S. , Ill., graph. Darst.
    ISBN: 0521643422
    Classification:
    Mineralogy
    Location: Upper compact magazine
    Branch Library: GFZ Library
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  • 2
    Electronic Resource
    Electronic Resource
    Silica polymorphs (1989)
    [s.l.] : Nature Publishing Group
    Nature 340 (1989), S. 193-193 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR-In the contents panel of Nature of 18 May 1989, an explanation of a paper1 on zeolite is accompanied by a figure that is, in fact, taken from our paper2 in the same issue on new crystal structures of silica (SiO2). Curiously, this inadvertent association reminds us of a notion that has been at ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/340193b0
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  • 3
    Electronic Resource
    Electronic Resource
    New pressure-induced structural transformations in silica obtained by computer simulation (1989)
    [s.l.] : Nature Publishing Group
    Nature 339 (1989), S. 209-211 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The functional form of the interatomic potentials is expressed as1 x exp [(a, + dj - r)/(bt + bj)] - CtJ/r6 where r is the distance between the ith and the 7"th atoms, /o= 1 kcal A"1 mol"1, and the potential parameters used here are Q0 = -l.2 and Qsi = +2.4 in units of elementary charge, a0 = ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/339209a0
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  • 4
    Electronic Resource
    Electronic Resource
    A Link between Spin Fluctuation and Fermi Surface in the High T c Cuprates — A Description within the Single-band Hubbard Model (1999)
    Springer
    Journal of low temperature physics 117 (1999), S. 247-251 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A link between the spin structure and the shape of the Fermi surface is sys-tematically explored for the single-band repulsive Hubbard model with the fluctuation exchange (FLEX) approximation. We show that (i) the ex-perimentally observed band filling dependence of the peak position of the spin structure in the high T C cuprates can be understood for both the hole-doped (YBCO, Bi2212) and electron-doped (NCCO) regimes. (ii) For La 2−xSrxCuO4, the spin-structure incommensurability and the ARPES re-sult for the Fermi surface can be understood simultaneously if the second nearest neighbor hopping decreases with the hole doping.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1022580524592
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  • 5
    Electronic Resource
    Electronic Resource
    Superconductivity in the charge-transfer and Mott-Hubbard regimes of the three-band Hubbard model (1996)
    Springer
    Journal of low temperature physics 105 (1996), S. 603-608 
    Details
    ISSN: 1573-7357
    Keywords: 74.20.−z ; 74.25.Dw
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract An extensive quantum Monte Carlo calculation is performed to probe a possible electronic origin of the high-temperature superconductivity in cuprates by studying Emery's three-band Hubbard model. The $$d_{x^2 - y^2 }$$ pairing correlation is found to grow with the system size when the d electron repulsion Ud or the d-p level off-set Δɛ exceed the one-electron band width, where the correlation also starts to increase with Ud or Δɛ. We have detected this in both the charge-transfer and Mott-Hubbard regimes for appropriate doping concentrations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00768450
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  • 6
    Electronic Resource
    Electronic Resource
    Extended AB Period Study of the Electron Pairing Transition int-J Ladders (1996)
    Springer
    Journal of low temperature physics 105 (1996), S. 609-614 
    Details
    ISSN: 1573-7357
    Keywords: 74.25.−q ; 71.27.+a ; 03.65.Ge
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The extended Aharonov-Bohm period test, recently proposed by the present authors, is used to study the electron pairing transition in the t-J ladders. The critical point is detected as a gap opening in the extended spectral flow. The result suggests a pairing prior to the onset of a phase separation, which is consistent with a recent Tomonaga-Luttinger analysis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00768451
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  • 7
    Electronic Resource
    Electronic Resource
    Multiband superconductivity: A mapping to the extended attractive Hubbard model (1994)
    Springer
    Journal of superconductivity 7 (1994), S. 577-579 
    Details
    ISSN: 1572-9605
    Keywords: Cuprate superconductors ; multiband model ; extended Hubbard model ; mean field approximation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract Following our recent work which shows that purely repulsive multiband systems effectively reduce to the extended attractive Hubbard model having the on-site repulsion along with nearest-neighbor $$(\tilde V)$$ and next-nearst-neighbor $$(\tilde W)$$ attraction for the cuprate structures, we study the latter model in the mean-field theory.T c against band filling for various symmetries of pairing is numerically calculated. The results show that, for the region of $$\tilde V$$ and $$\tilde W$$ expected for the mapping from the original multiband model,T c has maximum values of the order of 100 K, which is consistent with the experimental results. For certain values of parameters,s- and $$d_{x^2 - y^2 } $$ -wave pairing have similar values of Tc, which may suggest the possibility of a mixed phase of the two.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00728462
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  • 8
    Electronic Resource
    Electronic Resource
    An in vivo study on the reaction of hydroxyapatite-sol injected into blood (2000)
    Springer
    Journal of materials science 11 (2000), S. 67-72 
    Details
    ISSN: 1573-4838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Technology
    Notes: Abstract In order to identify the possibility of hydroxyapatite-sol being used as a drug carrier and absorbent, an in vivo experimental study was performed. Pure hydroxyapatite microcrystals were synthesized by reaction of high purity Ca(OH)2 and H3PO4 solutions while using an ultrasonic homogenizer. Hydroxyapatite-sol was prepared by dispersing hydroxyapatite microcrystals into physiological salt solution. The hydroxyapatite-sol in different concentrations was injected into veins of both 25 Wistar rats and 5 Beagle dogs. The medium lethal dose was determined as 160 mg/kg. By observing the change of O2 and CO2 gas partial pressure, it was considered that the main cause of death by hydroxyapatite-sol injection was due to the blockage of capillaries. When one-sixth amount of the medium lethal dose was injected into the veins of the dogs, the value of phosphorous increased but calcium and magnesium kept stable. LDH, CPK, GOP and GDT values dramatically increased in 30 min after injection, however, one day after injection, the values returned to normal. Repeated experiments by similar methods were continued on same animals for 2 years in two-week intervals, the results in every experiment were almost same, no chronic damage or permanent side effects were discovered in the two years experiment. According to the results above, it was suggested that the hydroxyapatite-sol could be applied as a drug carrier into blood by using a small amount less than one-sixth of the medium lethal dose.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008993814033
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  • 9
    Electronic Resource
    Electronic Resource
    Improved separation of alpha chains of collagen type I, type III, and type V by noninterrupted electrophoresis using thioglycolic acid as a negatively charged reducer (1989)
    Weinheim : Wiley-Blackwell
    Electrophoresis 10 (1989), S. 29-33 
    Details
    ISSN: 0173-0835
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Improved separation of alpha chains of collagen type I (α1[I]2 α2[I]), type III(α1[III]3), and type V(α1[V] α2[V]α3[V]) was achieved by noninterrupted sodium dodecyl sulfate-polyacrylamide gel electrophoresis with a negatively charged reducer, thioglycolic acid. The thioglycolic acid, added to the running buffer of the cathodic reservoir, in the middle of electrophoresis quickly migrated in the gel anode, reducing interchain disulfide linkages in collagen type III and dissociating it into its alpha chain monomer, α1[III], without an interruption of electrophoresis. The alpha chain, α1[III], migrated more slowly than the α1[I] and α2[I] chains of collagen type I, resulting in an excellent separation of α1[III] from α1[I]. The mobility of α1[III] could be controlled by varying the time of thioglycolic acid addition to the running buffer. This enabled us not only to separate α1[III] from α1 [I] and α1[V], but also to precisely quantitate these alpha chains, even at low protein loading of mixed samples.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/elps.1150100108
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  • 10
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    Kuroki and Aoki Reply: (1997)
    American Physical Society
    Details
    Publication Date: 1997-01-06
    Print ISSN: 0031-9007
    Electronic ISSN: 1079-7114
    Topics: Physics
    Published by American Physical Society
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