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2001[X]
141Author    M. =. Li, Rb, Cs, L. Rycerz, M. Gaune-Escard3Requires cookie*
 Title    Mixing Enthalpies of TbBr3-MBr Liquid Mixtures  
 Abstract    The molar enthalpies o f mixing, A mixHm in the binary liquid systems TbBr3-M Br (M = Li, Na, 
  Reference    Z. Naturforsch. 56a, 859—864 (2001); received N ovem ber 14 2001 
  Published    2001 
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 TEI-XML for    default:Reihe_A/56/ZNA-2001-56a-0859.pdf 
 Identifier    ZNA-2001-56a-0859 
 Volume    56 
142Author    JitkaE. Ysseltová, M.Iroslav Ebert, V. Ladim Ír ZbranekRequires cookie*
 Title    The Influence of the Degree of Organization of Saturated Solutions on the Shape of the Solubility Isotherm  
  Reference    Z. Naturforsch. 56a, 865 (2001) 
  Published    2001 
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 TEI-XML for    default:Reihe_A/56/ZNA-2001-56a-0865.pdf 
 Identifier    ZNA-2001-56a-0865 
 Volume    56 
143Author    B. Baranowski, A. LundénRequires cookie*
 Title    An Explanation of the Removal of Metastability in Some Hydroacid Salts by Water Adsorption  
 Abstract    The metastability of some phases of C sH S04 and RbH2P 0 4 is due to the volume decrease at an endothermic phase transition which "locks in" the metastability in question. Water adsorption, which removes these metastabilities, probably exerts a "wedge-like" force which expands the lattice spacing in the surface layer, thus facilitating the start of the phase transition. The induction time and the zeroth order kinetics of the transition in RbH2P 0 4 are exponential functions of the water activity applied. 
  Reference    Z. Naturforsch. 56a, 869—872 (2001); received October 31 2001 
  Published    2001 
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 TEI-XML for    default:Reihe_A/56/ZNA-2001-56a-0869.pdf 
 Identifier    ZNA-2001-56a-0869 
 Volume    56 
144Author    Prasad Durga, Devesh Ojha, V.G K M Kumar, PisipatiRequires cookie*
 Title    Smectogenic Behaviour of 70.6 at it's Phase Transition Temperature: A Computational Analysis Reprint request to  
 Abstract    A computational analysis has been carried out to determine the configurational preference of a pair of Ar-(4-n-heptyloxybenzylidine)-4-hexylaniline (70.6) molecules with respect to translatory and orien­ tational motions. The CNDO/2 method has been employed to evaluate the net atomic charge and atom­ ic dipole components at each atomic centre of the molecule. The configurational energy has been com­ puted using the modified Rayleigh-Schrödinger perturbation method. The obtained energies were used to calculate the probability of each configuration at phase transition temperature, using Maxwell-Boltz-mann's formula. The flexibility of various configurations has been studied in terms o f variations of the probability due to small departures from the most probable configuration. The results are discussed in the light of experimental as well as other theoretical observations. The smectogenic character of the molecule has been correlated with the parameters introduced in this paper. 
  Reference    Z. Naturforsch. 56a, 873—878 (2001); received October 12 2001 
  Published    2001 
  Keywords    706, CNDO/2 Method, Quantum Chemistry, Computer Simulation 
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 TEI-XML for    default:Reihe_A/56/ZNA-2001-56a-0873.pdf 
 Identifier    ZNA-2001-56a-0873 
 Volume    56 
145Author    Goong Chen, Zijian DiaoRequires cookie*
 Title    Quantum Multi-object Search Algorithm with the Availability of Partial Information  
 Abstract    Consider the unstructured search of an unknown number I of items in a large unsorted database of size N. The multi-object quantum search algorithm consists of two parts. The first part of the algorithm is to generalize Grover's single-object search algorithm to the multiobject case, and the second part is to solve a counting problem to determine /. In this paper we study the multi-object quantum search algorithm (in continuous time), but in a more structured way by taking into account the availability of partial informa­ tion. The modeling of available partial information is done simply by the combination o f several pre­ scribed, possibly overlapping, information sets with varying weights to signify the reliability of each set. The associated statistics is estimated and the algorithm efficiency and complexity are analyzed. Our analysis shows that the search described here may not be more efficient than the unstructured (generalized) multi-object Grover search if there is "misplaced confidence". However, if the informa­ tion sets have a "basic confidence" property in the sense that each information set contains at least one search item, then a quadratic speedup holds on a much smaller data space, which further expedites the quantum search for the first item. 
  Reference    Z. Naturforsch. 56a, 879—888 (2001); received September 18 2001 
  Published    2001 
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 TEI-XML for    default:Reihe_A/56/ZNA-2001-56a-0879.pdf 
 Identifier    ZNA-2001-56a-0879 
 Volume    56 
146Author    F. W. InterbergRequires cookie*
 Title    Gamma-Ray Bursters and Lorentzian Relativity  
 Abstract    In the dynamic interpretation of relatively by Lorentz and Poincare, Lorentz invariance results from real physical contractions of measuring rods and slower going clocks in absolute motion against an ether. As it was shown by Thirring, this different interpretation of special relativity can be extended to gener­ al relativity, replacing the non-Euclidean with a Euclidean geometry, but where rods are contracted and clocks slowed down. In this dynamic interpretation of the special, (and by implication of the general) theory of relativity, there is a balance of forces which might be destroyed near the Planck energy, reached in approaching the event horizon. In gravitational collapse, the event horizon appears first at the center of the collapsing body, thereafter moving radially outward. If the balance of forces holding together ele­ mentary particles is destroyed near the event horizon, all matter would be converted into zero rest mass particles which could explain the large energy release of gamma ray bursters. 
  Reference    Z. Naturforsch. 56a, 889—892 (2001); received August 29 2001 
  Published    2001 
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 TEI-XML for    default:Reihe_A/56/ZNA-2001-56a-0889.pdf 
 Identifier    ZNA-2001-56a-0889 
 Volume    56 
147Author    A. K. Urbatov, P. Janik, A. D. Ro, Zd-R Zo Sk, S.J R Zo Sk, M. Paluch, P. M. Alik, J. Z. Io Ło, J. JaRequires cookie*
 Title    Universal Scaling of Alpha Relaxation in Complex Liquids  
 Abstract    A plot is given, showing the result of a scaling analysis of dielectric loss curves containing, apart from low molecular glass former data (glycerol, dibutyl phtalate), also loss curves of the following liquid crystalline materials, mostly in the iso­ tropic phase: 4-(2-methylbutyl)-4'cyanobiphenyl (5*CB, supercooled isotropic phase), 4-cyano-4-n-alkyl biphenyls (nematogens 5CB and 8CB, isotropic phase), 4-(4-cyano-4-butylcyclohexyl)-4'-octylbiphenyl (laterally substituted nema-togen, isotropic phase), and 4-n-alkyl-4'-isothiocyanatobiphe-nyl (5 and 10 BT, isotropic and SmE phases). The plot applies the scaling formula originally proposed for glassforming, super­ cooled liquids [Dendzik et al.7]. The result supports the recent suggestion that dielectric relaxation in the isotropic phase of nematogens may show some features typical for "glassy" mate­ rials. 
  Reference    Z. Naturforsch. 56a, 893—894 (2001); received September 21 2001 
  Published    2001 
  Keywords    Complex Liquids Supercooled Liquids, Liquid Crystals, Dielectric Loss Curves, Universality 
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 TEI-XML for    default:Reihe_A/56/ZNA-2001-56a-0893_n.pdf 
 Identifier    ZNA-2001-56a-0893_n 
 Volume    56 
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