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  • Springer  (317)
  • Oxford University Press  (37)
  • 2005-2009  (124)
  • 1995-1999  (178)
  • 1980-1984  (52)
  • 1960-1964
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  • 1
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    Characteristics of resident dendritic cells in various regions of rat periodontal ligament (2007)
    Springer
    Details
    Publication Date: 2007-11-27
    Print ISSN: 0302-766X
    Electronic ISSN: 1432-0878
    Topics: Biology , Medicine
    Published by Springer
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    PAPER CURRENT
  • 2
    Electronic Resource
    Electronic Resource
    Isologous diversification: A theory of cell differentiation (1997)
    Springer
    Bulletin of mathematical biology 59 (1997), S. 139-196 
    Details
    ISSN: 1522-9602
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Mathematics
    Notes: Abstract An isologous diversification theory for cell differentiation is proposed, based on simulations of interacting cells with biochemical networks and the cell division process following consumption of some chemicals. According to the simulations of the interaction-based dynamical systems model, the following scenario of the cell differentiation is proposed. (1) Up to some threshold number, divisions bring about almost identical cells with synchronized biochemical oscillations. (2) As the number is increased, the oscillations lose synchrony, leading to groups of cells with different phases of oscilaations. (3) Amplitudes of oscillation and averaged chemical compositions start to differ by groups of cells. The differentiated behavior of states is transmitted to daughter cells. (4) Recursivity is formed so that the daughter cells keep the identical chemical character. This “memory” is made possible through the transfer of initial conditions. (5) Successive differentiation proceeds. The mechanism of tumor cell formation, origin of stem cells, anomalous differentiation by transplantations, apoptosis and other features of cell differentiation process are also discussed, with some novel predictions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02459474
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  • 3
    Electronic Resource
    Electronic Resource
    Emergence of rules in cell society: Differentiation, hierarchy, and stability (1998)
    Springer
    Bulletin of mathematical biology 60 (1998), S. 659-687 
    Details
    ISSN: 1522-9602
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Mathematics
    Notes: Abstract A dynamic model for cell differentiation, where cells with internal chemical reaction dynamics interact with each other and replicate was studied. It led to spontaneous differentiation of cells and determination, as discussed in the isologous diversification. The following features of the differentiation were obtained: (1) hierarchical differentiation from a ’stem’ cell to other cell types, with the emergence of the interaction-dependent rules for differentiation; (2) global stability of an ensemble of cells consisting of several cell types, that were sustained by the emergent, autonomous control on the rate of differentiation; (3) existence of several cell colonies with different cell-type distributions. The results provide a novel viewpoint on the origin of a complex cell society, while relevance to some biological problems, especially to the hemopoietic system, is also discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1006/bulm.1997.0034
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  • 4
    Electronic Resource
    Electronic Resource
    Diffusion phenomena of small molecules in polyelectrolyte solutions (1981)
    Springer
    Polymer bulletin 6 (1981), S. 35-39 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary From diffusion data of xylose in poly (acrylic acid) and in poly(sodium acrylate) aqueous solutions, the behaviour of these polymers in solution is discussed. When these polyelectrolytes are ionized and expanded in water, consequently, the diffusion phenomena of xylose in these solutions follows the theory of linear macromolecules in solution. When NaCl is added in poly (acrylic acid) solution, the polymer chain contracts and becomes spherical. Therefore, xylose cannot pass through the polymer domain. With poly(sodium acrylate), however, an effect of salt has not been found. Furthermore, effects of neutralization are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00256501
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  • 5
    Electronic Resource
    Electronic Resource
    Average molecular weight and viscosity of acetone solutions of phenolic resins (1983)
    Springer
    Polymer bulletin 10 (1983), S. 533-537 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary The viscosity-diffusion method has been proposed as a technique for molecular weight determination of spherical polymers such as phenolic resins. When the average diffusion coefficient DA calculated from the area of diffusion curve is used in this technique, there exists the following relation between Da and the specific volume φ of solute in solution: φ √DA = const. therefore, [η] = K M0.2 is derived. Though the average molecular weight obtained from DA and φ generally falls between Mn and Mw, there are some reports that the exponent of M rather increases when M is given as number average. We found that the exponent becomes larger than 0.2 when the polymolecularity of the sample becomes remarkable or it increases with molecular weight.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00285372
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  • 6
    Electronic Resource
    Electronic Resource
    Interpolation methods in one dimensional optimization (1981)
    Springer
    Computing 27 (1981), S. 155-163 
    Details
    ISSN: 1436-5057
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Description / Table of Contents: Zusammenfassung Numerische Vergleiche zwischen rationalen Funktionen als Interpolationsfunktionen bei eindimensionalen Optimierungsaufgaben. Als Text-Zielfunktionen wurden Funktionen von drei Typen ausgewählt: symmetrische und nichtsymmetrische Funktionen und Funktionen mit Badewannengestalt.
    Notes: Abstract Various rational functions are compared as interpolation functions in one dimensional optimization. Three types of objective functions are employed for numerical tests—quadratic type, asymmetric type and bath-tub shaped functions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02243549
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  • 7
    Electronic Resource
    Electronic Resource
    A novel preparation of gold films by electrodeposition at the interface between a Na(AuCl4)–CuSO4 aqueous phase and an immiscible hexyl acetate organic phase (1997)
    Springer
    Journal of applied electrochemistry 27 (1997), S. 1100-1105 
    Details
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract Electrolysis at the interface between a Na(AuCl4)–CuSO4 aqueous phase and an immiscible hexyl acetate phase resulted in continuous growth of gold films along the interface. To maintain filmy growth of gold, it was effective to stimulate displacement of predeposited copper with gold by applying a rectangular or triangular potential in a given range. Two types of electrodes were applied: from a point electrode the film grew concentrically like a blooming flower, and from a line electrode the film grew unidirectionally toward the counter electrode as a spreading wave. A long time electrolysis could be performed by circulating and filtering the aqueous solution. The film contained no trace of copper and was very thin (〈1μm).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1018498929107
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  • 8
    Electronic Resource
    Electronic Resource
    Game logic and its applications I (1996)
    Springer
    Studia logica 57 (1996), S. 325-354 
    Details
    ISSN: 1572-8730
    Keywords: infinitary predicate KD4 ; common knowledge ; Nash equilibrium ; undecidability on playability
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Philosophy
    Notes: Abstract This paper provides a logic framework for investigations of game theoretical problems. We adopt an infinitary extension of classical predicate logic as the base logic of the framework. The reason for an infinitary extension is to express the common knowledge concept explicitly. Depending upon the choice of axioms on the knowledge operators, there is a hierarchy of logics. The limit case is an infinitary predicate extension of modal propositional logic KD4, and is of special interest in applications. In Part I, we develop the basic framework, and show some applications: an epistemic axiomatization of Nash equilibrium and formal undecidability on the playability of a game. To show the formal undecidability, we use a term existence theorem, which will be proved in Part II.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00370838
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  • 9
    Electronic Resource
    Electronic Resource
    Density of He adsorbed in micropores at 4.2K (1995)
    Springer
    Adsorption 1 (1995), S. 165-173 
    Details
    ISSN: 1572-8757
    Keywords: He adsorption ; micropore ; ultramicroporosity ; N2 adsorption ; zeolite
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Physics , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract The density of He adsorbed in the cylindrical micropores of zeolites NaY and KL has been determined by He adsorption at 4.2K. He adsorption isotherms were then compared with N2 adsorption isotherms at 77K. Crystallographic considerations of the micropore volumes gave the density of the He adsorbed layer, which is necessary for assessment of ultramicroporosity of less-crystalline microporous solids, such as activated carbons. The determined density of He adsorbed in the cylindrical micropores of the zeolite was in the range 0.22 to 0.26 gml−1, greater than that of He adsorbed on a flat surface (0.202 gml−1). A value for the density of He between 0.20 to 0.22 gml−1 is recommended for evaluation of ultramicroporosity of a slit-shaped microporous system such as activated carbon.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00705003
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  • 10
    Electronic Resource
    Electronic Resource
    Recrystallization-induced defect porous nature of C60 crystals (1996)
    Springer
    Adsorption 2 (1996), S. 153-156 
    Details
    ISSN: 1572-8757
    Keywords: fullerene ; micropore filling ; N2 adsorption ; point defect
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Physics , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract Defective state of C60 crystals was controlled by the recrystallization and annealing. The defective structure was examined by the X-ray diffraction and N2 adsorption at 77 K. Recrystallized C60 crystals without annealing showed broad diffraction peaks and the N2 adsorption isotherm had marked low pressure uptake and a hysteresis in the high pressure region, indicating presence of both micropores and mesopores. The average micropore width was 8 Å which is closed to the C60 molecular size, while the average mesopore one was 50 Å. The mesopores disappeared by annealing up to 393 K. On the other hand micropores of 8 Å remained even by heating up to 673 K.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00127045
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