ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Conference proceedings  (31)
  • Springer  (31)
  • 2010-2014
  • 2000-2004
  • 1990-1994  (31)
Collection
Keywords
Publisher
  • Springer  (31)
Years
  • 2010-2014
  • 2000-2004
  • 1990-1994  (31)
  • 1995-1999  (34)
Year
  • 1
    Electronic Resource
    Electronic Resource
    Sound propagation and viscosity in water short-chain amphiphiles solutions, evidence of percolation phenomena (1994)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 16 (1994), S. 1619-1625 
    Details
    ISSN: 0392-6737
    Keywords: Brillouin and Rayleigh scattering ; Ultrasonic relaxation processes in gases, liquids, and solids ; Acoustical properties of liquids ; Order-disorder and statistical mechanics of model systems ; Conference proceedings
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Summary A water/butoxyethanol solution has been investigated by means of several techniques (viscosity, ultrasound and hypersound) as a function of concentration and temperature. The butoxyethanol molar fraction range investigated was situated between 0.015 and 0.09, while temperature ranged between −10°C and +45°C. We observed the building-up of large structures lowering the temperature, in particular below +15°C. All data coming from different techniques seem to confirm such a picture and indicate that this aggregation phenomenon is a percolation-like process.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02462050
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Aggregating block copolymers as model systems to study polymer brush dynamics (1994)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 16 (1994), S. 747-755 
    Details
    ISSN: 0392-6737
    Keywords: Neutron scattering techniques (including small-angle scattering) ; Polymers, elastomers, and plastics ; Fluctuation phenomena, random processes and Brownian motion ; Conference proceedings
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Summary A-B block copolymers in a selective solvent—good for the B-species and bad for the A-species—form micellar aggregates with a compact A-core with a corona (brush) of B «hairs» reaching into the solvent. Whereas polystyrene(PS)-polyisoprene(PI) in decane forms spherical micelles with a PS core of about 10 nm radius, polyethylene(PE)-polyethylenepropylene(PEP) forms micellar platelets, the shape of which is goverend by the habitus of PE crystallites forming the core. These planar aggregates have large (several hundred nanometers) lateral extension and a core thickness in the range of 10 nm. Both systems are model systems for polymer brushes, either on a spherical surface or planar. Neutron spin-echo experiments allow for the investigation of the dynamics of the brushes which reflects their viscoelastic properties. Results of neutron small-angle and spin-echo investigations are reported. The brush dynamics is explained using a model based on an idea of de Gennes describing the brush properties in terms of scaling relations for osmotic pressure and viscosity of a semi-dilute solution with inhomogeneous density.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02456720
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Geometry of bicontinuous microemulsions as revealed by SANS and simulations (1994)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 16 (1994), S. 1357-1366 
    Details
    ISSN: 0392-6737
    Keywords: Fluid surfaces and fluid-fluid interfaces ; Neutron scattering techniques (including small-angle scattering) ; Conference proceedings
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Summary Water-octane-C10E4 microemulsions in both the isotropic and lamellar phases were measured using small-angle neutron scattering. Varying the scattering length density of both the water and oil through hydrogen-deuterium substitution enabled us to isolate the scattering contributions of the surfactant monolayers and the water-surfactant and oil-surfactant interfaces. Analyses of the resulting scattering patterns allow us to directly determine the small mean curvature of the surfactant film as a function of temperature and correlate this quantity with the overall phase behavior. A simulation using a Gaussian random field yields the three-dimensional structure of the bicontinuous microemulsion having a surfactant monolayer with zero mean curvature.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02462020
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Magnetic characterization of hot-pressed BSCCO (2223) phase superconducting ceramic (1994)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 16 (1994), S. 1871-1876 
    Details
    ISSN: 0392-6737
    Keywords: Magnetization curves ; Meissner effect ; penetration depth ; Critical currents ; Conference proceedings
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Summary BSCCO (2223) phase superconductor, prepared by the traditional solid-state reaction route, was densified by hot pressing, yielding high-density and textured-bulk materials. A correlation between processing parameters and inter-, intra-granular properties of the sample was performed through the evaluation of microstructural features and the study of electrical resistivity and magnetization behaviour as a function of different temperature and magnetic field.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02462187
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Flux motion by quantum tunnelling in high-T c superconductors (1994)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 16 (1994), S. 1925-1932 
    Details
    ISSN: 0392-6737
    Keywords: Flux pinning ; flux motion ; fluxon-defect interactions ; Critical currents ; Conference proceedings
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Summary The results of low-temperature magnetic-relaxation experiments in TlBaCaCuO superconductors (2212 and 2223 phase) are reported. They give evidence of a crossover from a thermally activated regime of flux motion to a nonthermally activated one. The magnetic-relaxation rate is found to become temperature independent below ≅7K and ≅3K, for the 2212 and 2223 phase, respectively. Its value compares well with that predicted by the theories of flux motion by quantum tunnelling.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02462195
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Mutual conversion of (BiPb)2Sr2Ca n−1Cu n O x HTSCs withn=1, 2, 3: Temperature and oxygen partial-pressure dependence (1994)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 16 (1994), S. 1701-1708 
    Details
    ISSN: 0392-6737
    Keywords: Superconducting perovskites and related structures ; Treatment of materials and its effects on microstructure and properties ; Conductivity phenomena in semiconductors and insulators ; Conference proceedings
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Summary The transformation of the 2223 (n=3) phase in the 2201 (n=1) phase by heating the sample in Ar atmosphere was studied. The subsequent cycling of the sample temperature and the oxygen enrichment of the gas phase convert the 2201 (n=1) phase in the 2223 (n=3) phase in the presence of the 2212 (n=2) and Ca2PbO4 compound. Thein situ resistivity measurements,T c values and XRD carried out on the sample confirm these phase changes. The experiment indicates that this process is oxygen dependent at low oxygen partial pressure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02462163
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Molar-mass dependence of the lamellar thickness in symmetric diblock copolymers (1994)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 16 (1994), S. 835-842 
    Details
    ISSN: 0392-6737
    Keywords: Order-disorder and statistical mechanics of model systems ; Small-angle scattering, EDXD, EXAFS, and other techniques ; Layer structures, intercalation compounds, and superlattices: growth, structure, and nonelectronic properties ; Polymers, elastomers, and plastic ; Conference proceedings
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Summary A homologous series of nine symmetric poly(styrene)-block-poly(butadieme) diblock copolymers was synthesized and characterized. The scaling of the lamellar thickness,D, with the chain lengthN(DαN δ ) was investigated with small-angle X-ray scattering. Different sample preparation methods were used: annealing, solvent-casting and shear alignment. We find that the lamellar thickness and thus the value of the exponent δ depends on the preparation method used,i.e. care must be taken to ensure that the samples investigated are in thermodynamic equilibrium.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02456732
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Dynamical properties of water-methanol solutions: Brillouin and depolarized Rayleigh scattering (1994)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 16 (1994), S. 923-931 
    Details
    ISSN: 0392-6737
    Keywords: Brillouin and Rayleigh scattering ; Ultrasonic relaxation processes in gases, liquids, and solids ; Structure of associated liquids ; Conference proceedings
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Summary We have performed Brillouin and depolarized Rayleigh light scattering on water-methanol solutions as a function of methanol molar fraction and temperature. For this system, molecular-dynamics (MD) simulation predicts that a shell of water forms around a methanol molecule, prediction which has been recently confirmed by neutron diffraction experiments. The results obtained by light scattering and presented here confirm previous observations and show, in addition, an increase of the stability in time of the water structure in the shells when temperature decreases and methanol concentration approaches a particular value.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02456743
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Interactions of metal ions with monolayers and with Langmuir-Blodgett films (1994)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 16 (1994), S. 1579-1584 
    Details
    ISSN: 0392-6737
    Keywords: Fluid surfaces and fluid-fluid interfaces ; Conference proceedings
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Summary Oriented systems such as monolayers and Langmuir-Blodgett multilayers constitute supramolecular structures appropriate for ion detection. In fact, they are sensitive to small quantities of ions since they have specifically oriented ligand head groups that can easily combine with the ions to be detected in solution. We investigated monolayers of dioctadecyldithiocarbamate (DODTC) specificially synthesized and we studied the interactions of the monolayers with transition metal ions such as Ni2+ dissolved in the subphase. The spreading isotherms, the surface potential-area isotherms and the spectroscopic measurements (UV-Vis absorption and ESCA spectroscopy) show that the metal ions can combine with the DODTC monolayers. The present findings show that it is possible to employ these systems to build chemical sensors for transition metal ions
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02462045
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    A comparison of DMPC membranes mixed with melittin or C12E5 (1994)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 16 (1994), S. 1585-1594 
    Details
    ISSN: 0392-6737
    Keywords: Molecular biophysics ; Defects in liquid crystals ; Conference proceedings
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Summary The effect of adding the defect-forming molecules melittin and C12E5 to DMPC membranes has been studied and the corresponding phase diagrams established. Light, X-ray and neutron small-angle scattering have been used to characterize the mixed membranes. Both systems show a melting of the lamellar Lα into an isotropic phase upon addition of the second membrane constituent. The molar ratio, where the melting occurs is the same in concentrated and dilute samples. For the DMPC/C12E5 system not only membrane composition, but also temperature can be used to induce a transition from an isotropic to a lamellar phase.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02462046
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...