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  • Springer  (246)
  • 2000-2004  (74)
  • 1995-1999  (85)
  • 1985-1989  (53)
  • 1980-1984  (34)
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Year
  • 1
    Electronic Resource
    Electronic Resource
    CPS 768 Formation of anisotropic ice-agar composites by directional freezing (1984)
    Springer
    Colloid & polymer science 262 (1984), S. 589-595 
    Details
    ISSN: 1435-1536
    Keywords: Crystallization ; water ; agar ; gel ; vitrification
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Aqueous agar gels were directionally frozen in a temperature gradient of 10 °C/ cm at rates between 8.8×10−5 cm/sec and 8.8×10−4 cm/sec to form highly anisotropic ice-agar composites. Observations of the vitrified agar domains which were localized at the ice grain boundaries were made and the ice domain size was measured as a function of the solidifying conditions. The segregation of the noncrystalline agar was dominated by the vitrification character of the agar gel. Thermal analysis indicated that ice crystallization rate decreased to a negligible level as the water content of the gel decreased to approximately 50 percent by weight agar.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01451524
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  • 2
    Electronic Resource
    Electronic Resource
    Coupling-length trimming by metal loading in optical coupled-waveguides (1981)
    Springer
    Optical and quantum electronics 13 (1981), S. 141-146 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract A simple method for adjusting light coupling between two waveguides is presented. The method involves trimming the interaction length by loading a metal film on to one of the coupled-waveguides. It is effective only for the TM mode, and trimming can be achieved very simply. The operational principle is experimentally examined using an optical directional coupler fabricated inc-plate LiNbO3.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00612746
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  • 3
    Electronic Resource
    Electronic Resource
    Wolbachia-induced parthenogenesis in the egg parasitoid Telenomus nawai (2000)
    Springer
    Entomologia experimentalis et applicata 96 (2000), S. 177-184 
    Details
    ISSN: 1570-7458
    Keywords: egg parasitoid ; parthenogenesis ; Wolbachia ; Telenomus ; Hymenoptera ; Scelionidae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Two egg parasitoid species, Telenomus nawai and Telenomus spec. are similar morphologically but they have been treated as different species because of their different reproductive forms, arrhenotoky and thelytoky. Male progeny were produced from the thelytokous colony of Telenomus spec. (TT) by heat and antibiotic treatments. These males mated successfully with females of arrhenotokous colony of T. nawai (AT) and the females produced on average 19.1% males. This percentage did not differ from that obtained from AT females mated with AT males (19.4%). Diagnostic PCR indicated that TT is infected with Wolbachia; antibiotic treatments eliminated Wolbachia from TT. These facts suggest that Wolbachia causes thelytoky and Telenomus spec. (TT) is conspecific with T. nawai (AT).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1004007127942
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  • 4
    Electronic Resource
    Electronic Resource
    Cytoplasmic incompatibility in allopatric field populations of the small brown planthopper, Laodelphax striatellus, in Japan (1984)
    Springer
    Entomologia experimentalis et applicata 35 (1984), S. 263-267 
    Details
    ISSN: 1570-7458
    Keywords: cytoplasmic incompatibility ; cytoplasmic inheritance ; Laodelphax striatellus ; Delphacidae ; Japan
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Résumé Laodelphax striatellus présente une incompatibilité cytoplasmique reproductive entre souches de laboratoire. Des individus de la nature ont été croisés pour examiner l'incompatibilité entre populations allopatriques récoltées dans les champs. Sur la base de l'incompatibilité observée avec les populations naturelles, les populations japonaises ont été divisées en deux groupes: un pour la partie nordest du Japon, l'autre pour la partie occidentale. Les croisements entre femelles du premier groupe et mâles du second ont donné des oeufs stériles, montrant une incompatibilité unilatérale. Un petit nombre d'oeufs de couples incompatibles se sont cependant développés normalement.
    Notes: Abstract The small brown planthopper, Laodelphax striatellus (Homoptera, Delphacidae), shows reproductive cytoplasmic incompatibility between laboratory-cultured strains. Wild planthoppers, were crossed for the purpose of examining the incompatibility principle in allopatric field populations. On the basis of the incompatibility recorded in field populations, Japanese planthopper populations were divided into two groups: one from the north-eastern part and one from the western part of Japan. Crosses between the females of the former group and males of the latter gave infertile eggs, showing unidirectional incompatibility. A small number of eggs from incompatible pairs, however, developed normally.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00369142
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  • 5
    Electronic Resource
    Electronic Resource
    Charmed hadron production in $\pi p$ and $Kp$ collisions and leading particle effect by constituent quark-diquark cascade model (1998)
    Springer
    The European physical journal 2 (1998), S. 733-740 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract. We investigate the meson, baryon and anti-baryon productions in $\pi p$ and $Kp$ collisions in terms of a constituent cascade model which includes charm flavour. The constituent diquark in an incident baryon has a tendency to get a large momentum fraction, resulting in considerable difference of subenergies for particle productions from quark-diquark and quark-antiquark chains in a meson-baryon collision. As a consequence, the leading particle effects on $D$ meson productions are expected to be quite different in $\pi^+$ and $\pi^-$ beams at present accelerator energies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100529800724
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  • 6
    Electronic Resource
    Electronic Resource
    Single-particle spectra in soft hadron-hadron interactions and two-component cascade model (1987)
    Springer
    The European physical journal 35 (1987), S. 21-31 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We present a cascade model which can treat both diffractive and non-diffractive mechanisms. Single-particle inclusive spectra in soft hadron-hadron interactions are investigated and compared with recent data. The model gives an overall description of hadron productions in the wholex region and is in a good agreement with the data.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01561051
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  • 7
    Electronic Resource
    Electronic Resource
    2-D Simulation and New Structures of Heterojunction Phototransistor for Higher Optical Amplification in Optoelectronic Integrated Devices (1995)
    Springer
    Optical review 2 (1995), S. 120-122 
    Details
    ISSN: 1349-9432
    Keywords: heterojunction phototransistor ; two-dimensional simulation ; optoelectronic integrated device
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The improvement of optical gain is an important priority for performance design in most of optoelectronic integrated devices (OEIDS). A two-dimensional simulator is developed for the rigorous analysis and optimum design of devices. With it, we analyze the characteristics of heterojunction phototransistor (HPT) which acts as a light-detector in OEID, and we propose new structures of HPT to increase the conversion gain without much increase in dark current. Then, the simulation of an OEID composed of an HPT integrated over a light-emitting diode (LED) is implemented, and it is shown that the new structures significantly improve the optical amplification for low input light power over the conventional structure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s10043-995-0120-0
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  • 8
    Electronic Resource
    Electronic Resource
    Synthesis of an analog of human calcitonin gene related peptide, [Asu2,7]-h-CGRP (1987)
    Springer
    Cellular and molecular life sciences 43 (1987), S. 890-892 
    Details
    ISSN: 1420-9071
    Keywords: h-CGRP analog ; synthesis ; Ca and Pi lowering effects
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The analog of h-CGRP, des-Ala-deamino-dicarba-h-CGRP, was synthesized by the combination of the conventional solution and the solid phase peptide synthesis methods. This analog showed stronger and longer-lasting hypocalcemic and hypophosphatemic activities than the natural hormone.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01951653
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  • 9
    Electronic Resource
    Electronic Resource
    Surface topography of granulosa cells accompanied by fragmented oocytes (1983)
    Springer
    Cellular and molecular life sciences 39 (1983), S. 772-773 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Scanning electron microscopy of granulosa cells (GC) and granulosa cell-like structures (GCLS) revealed that both had lacy foldings, or plicae, on the surface and were identical. The plicae did not always cover the entire surface of GC or GCLS. Both structures were interconnected by multivalent processes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01990320
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  • 10
    Electronic Resource
    Electronic Resource
    High-speed N2-CARS thermometry (1989)
    Springer
    Applied physics 49 (1989), S. 33-38 
    Details
    ISSN: 1432-0649
    Keywords: 42.65
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Using an excimer laser-pumped CARS spectrometer, single-pulse temperature measurements have been performed with a repetition rate of up to 80 Hz in a 3-dimensional, phase-matched geometry. Single-pulse temperature data measured in a furnace typically fluctuated by ± 50 K within the temperature range 300–1300 K. The CARS spectra were analyzed by the G-matrix formalism with inclusion of cross coherence effects.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00332123
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