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  • Springer  (85)
  • 1995-1999  (62)
  • 1985-1989  (23)
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  • 1
    Digitale Medien
    Digitale Medien
    Film formation of latex dispersions observed with evanescent dynamic light scattering (1997)
    Springer
    Colloid & polymer science 104 (1997), S. 191-193 
    Details
    ISSN: 1435-1536
    Schlagwort(e): Evanescent dynamic light scattering ; colloidal dispersions ; film formation
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Maschinenbau
    Notizen: Abstract We have applied evanescent dynamic light scattering (DLS) to study the film formation of polymer latex dispersions. A dynamical glass transition is observed. When the particles fuse, the scattering rate decreases. After fusion, a new fast process (τ r 1 ms) is observed, which is not present in bulk DLS data. We attribute the process to discontinuous relaxation of surface induced stresses (transient micro-cracks).
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01182447
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  • 2
    Digitale Medien
    Digitale Medien
    Kinetic energy spectrum and polarization of neutrons from the reaction 12C(p,n)X at 590 MeV (1998)
    Springer
    The European physical journal 2 (1998), S. 411-415 
    Details
    ISSN: 1434-601X
    Schlagwort(e): PACS:29.25.Dz Neutron sources – 25.40.Ve Other reactions above meson production thresholds – 13.75.Cs Nucleon-nucleon interactions (including antinucleons, deuterons etc.)
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstact: The kinetic energy spectrum and the polarization of the PSI neutron beam produced in the reaction 12C(p,n)X at 0° with 590 MeV polarized protons were investigated. A strong energy dependence of the neutron beam polarization is observed which was not expected at the time the neutron beam was built.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s100500050138
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  • 3
    Digitale Medien
    Digitale Medien
    The production of charginos of theSU(N, 1) minimal sugra model ine + e − annihilation andp $$\bar p$$ collider experiments (1987)
    Springer
    The European physical journal 36 (1987), S. 715-723 
    Details
    ISSN: 1434-6052
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract We present cross sections for the charged lepton production from the lightest charged superpartner particles predicted by theSU(N, 1) Minimal SUGRA model, either the superpartners of the r.h. charged leptons or the Wino/Higgsino. At least one of these should appear in the decay of theZ, which is produced ine + e −-annihilation-presumably soon at the SLC — or inp $$\bar p$$ collider experiments. A large missing mass and strong deviations from back to back production of lepton pairs (and possibly ae-μ final state) would indicate such charged massive intermediate particles.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01630608
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  • 4
    Digitale Medien
    Digitale Medien
    The neutralinos of theSU(N,1) minimal supergravity model and standard cosmology (1988)
    Springer
    The European physical journal 40 (1988), S. 591-598 
    Details
    ISSN: 1434-6052
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract We discuss the effect of the lightest supersymmetric particle (LSP), a Higgsino, and of the gravitino of theSU(N,1) minimal SUGRA model in the standard big bang theory. The freeze out of the LSP depends on the gravitino mass and on the top mass and leads to restrictive lower bounds for these parameters in the model. The decay of a gravitino with mass in the few TeV range leads to a delay in the cooling of the universe before nucleosynthesis. This constitutes the main bound on the gravitino mass of the model. The results are compared with the more standard “simultaneous decay approximation”.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01560230
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  • 5
    Digitale Medien
    Digitale Medien
    Observations on the history of central B-splines (1988)
    Springer
    Archive for history of exact sciences 39 (1988), S. 137-156 
    Details
    ISSN: 1432-0657
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Mathematik , Allgemeine Naturwissenschaft
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00348440
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  • 6
    Digitale Medien
    Digitale Medien
    Processing of antennular input in the brain of the spiny lobster, Panulirus argus (1996)
    Springer
    Journal of comparative physiology 178 (1996), S. 605-628 
    Details
    ISSN: 1432-1351
    Schlagwort(e): Crustacean ; Olfaction ; Mechanoreception ; Local interneurons ; Projection neurons
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Abstract Neurons in the olfactory deutocerebrum of the spiny lobster, Panulirus argus, were recorded intracellularly and filled with biocytin. Recorded neurons arborized in the olfactory lobe (OL), a glomerular neuropil innervated by olfactory and some presumptive mechanosensory antennular afferents. The neurons responded to chemosensory input from the lateral antennular flagellum bearing the olfactory sensilla but not the medial flagellum bearing many non-olfactory chemosensory sensilla. Many neurons received additional mechanosensory input. Thus the OL integrates specifically olfactory with mechanosensory input. OL neurons had multiglomerular arborizations restricted to one or two of the three horizontal layers of the columnar glomeruli. OL local interneurons comprised “core” neurons with tree-like neurites and terminals in the base of the glomeruli and “rim” neurons with neurites surrounding the OL and terminals in the cap/subcap. The somata of OL local interneurons lay in the medial soma cluster (100000 somata). OL projection neurons arborized in the base of the glomeruli and ascended via the olfactory glomerular tract to the lateral protocerebrum. A parallel projection pathway is constituted by projection neurons of the accessory lobe, a glomerular neuropil without afferent innervation but intimate links to the OL. The projection neuron somata constituted the lateral soma cluster (200000 somata).
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00227375
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  • 7
    Digitale Medien
    Digitale Medien
    Processing of antennular input in the brain of the spiny lobster, Panulirus argus (1996)
    Springer
    Journal of comparative physiology 178 (1996), S. 579-604 
    Details
    ISSN: 1432-1351
    Schlagwort(e): Crustacean ; Chemoreception ; Mechanoreception ; Deutocerebrum ; Motoneurons ; Projection neurons
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Abstract Neurons in the brain of the spiny lobster that respond to chemical and mechanical stimulation of the antennule (antenna I) were recorded and stained intracellularly. Described here are neurons that do not arborize in the olfactory and accessory lobes of the deutocerebrum, but rather primarily target the lateral and/or the median antennular neuropils of the deutocerebrum. Some of the neurons also extend into the antennal and tegumentary neuropils of the tritocerebrum and the neuropils of the median protocerebrum. Included are antennular sensory afferents, antennular motoneurons, projection neurons descending from the central brain, projection neurons ascending from the central brain and projection neurons descending from the eyestalk ganglia. Collectively, these neurons consitutute a novel antennular sensory pathway that is parallel to and independent of the antennular olfactory pathway. The novel pathway integrates mechanosensory and non-olfactory chemosensory information in the lateral and/or the median antennular neuropils, which also serve as lower motor centers of the antennule. Division of the arthropod deutocerebrum into two, functionally distinct chemosensory pathways may reflect differences in how chemosensory information is processed that is fundamental to understanding the origin of the sense of smell.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00227374
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  • 8
    Digitale Medien
    Digitale Medien
    Characteristic features of the x-ray spectra of a plasma produced by heating CO2 clusters by intense femtosecond laser pulses with λ=0.8 and 0.4 μm (1998)
    Springer
    JETP letters 68 (1998), S. 485-491 
    Details
    ISSN: 1090-6487
    Schlagwort(e): 52.50.Jm
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract The x-ray spectra of a plasma produced by heating CO2 clusters with intense femtosecond laser pulses with λ=0.8 μm and λ=0.4 μm are investigated. Spatially resolved x-ray spectra of the cluster plasma are obtained. The observed characteristic features of the x-ray emission spectra show unequivocally that such a plasma contains quite a large relative number of ions (≃10−2–10−3) with energies of 0.1–1 MeV. The contour of the OVIII Lyα line is found to have characteristic features that are especially conspicuous when the clusters are heated with second-harmonic pulses. These features cannot be explained by any mechanisms known to the authors.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1134/1.567894
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  • 9
    Digitale Medien
    Digitale Medien
    Observation of ions with energies above 100 keV produced by the interaction of a 60-fs laser pulse with clusters (1999)
    Springer
    Journal of experimental and theoretical physics 88 (1999), S. 1122-1129 
    Details
    ISSN: 1090-6509
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract The x-ray spectra of a plasma generated by heating CO2 and Ar clusters with high-intensity femtosecond laser pulses with q las≃1018 W/cm2 are investigated. Spatially resolved x-ray spectra of a cluster plasma are obtained for the first time. Photoionization absorption is observed to influence the spectral line profiles. The recorded features of the x-ray emission spectra definitely indicate the existence of a large relative number of excited ions (≃10−2–10−3) with energies of 0.1–1 MeV in such a plasma. Possible mechanisms underlying the acceleration of ions to high energies are discussed. It is shown that the experimental results can be attributed to the influence of ponderomotive forces in standing waves generated by the reflection of laser radiation from the clusters.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1134/1.558900
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  • 10
    Digitale Medien
    Digitale Medien
    Sub-nanomol per second flow measurement near atmospheric pressure (1998)
    Springer
    Experiments in fluids 25 (1998), S. 37-41 
    Details
    ISSN: 1432-1114
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Maschinenbau
    Notizen: Abstract  We present a measurement technique designed to accurately measure small flow rates near atmospheric pressure, and demonstrate the ability to measure flows on the order of 10-10 mol/sec. The technique is based upon a modification of a constant-volume mass accumulation scheme where the flow rate is measured by monitoring the change in pressure of a known volume of gas. We identify two phenomena, thermally-induced fluctuations and thermodynamically-induced fluctuations, which will affect the resolution and dynamic range of the instrumentation and discuss how the problems associated with them can be mitigated. We estimate the resolution to be approximately 2.0×10-13 mol/s, and the maximum measurable flow rate to be to the order 2×10-9 mol/s.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s003480050205
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