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  • 1
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    Dynamics of extracellular matrix in ovarian follicles and corpora lutea of mice (2009)
    Springer
    Details
    Publication Date: 2009-12-23
    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
    A Model of Consumers' Risk Perceptions Toward Recombinant Bovine Growth Hormone (rbGH): The Impact of Risk Characteristics (1999)
    Springer
    Risk analysis 19 (1999), S. 661-673 
    Details
    ISSN: 1539-6924
    Keywords: risk perception ; risk characteristics ; outrage factors ; rbGH ; ordered probit
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract This study estimates the effect risk characteristics, described as outrage factors by Hadden, have on consumers' risk perceptions toward the food-related biotechnology, recombinant bovine growth hormone (rbGH). The outrage factors applicable to milk from rbGH treated herds are involuntary risk exposure, unfamiliarity with the product's production process, unnatural product characteristics, lack of trust in regulator's ability to protect consumers in the marketplace, and consumers' inability to distinguish milk from rbGH treated herds compared to milk from untreated herds. An empirical analysis of data from a national survey of household food shoppers reveals that outrage factors mediate risk perceptions. The results support the inclusion of outrage factors into the risk perception model for the rbGH product, as they add significantly to the explanatory power of the model and therefore reduce bias compared to a simpler model of attitudinal and demographic factors. The study indicates that outrage factors which have a significant impact on risk perceptions are the lack of trust in the FDA as a food-related information source, and perceiving no consumer benefits from farmers' use of rbGH. Communication strategies to reduce consumer risk perceptions therefore could utilize agencies perceived as more trustworthy and emphasize the benefits of rbGH use to consumers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1007085603876
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  • 3
    Electronic Resource
    Electronic Resource
    The information processing organisms (1996)
    Springer
    Acta biotheoretica 44 (1996), S. 143-151 
    Details
    ISSN: 1572-8358
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract In spite of the tremendous progress in recent decades of biological science, many aspects of the behaviour of organisms in general and of humans in particular remain still somewhat obscure. A new approach towards the study of the behaviour of man was presented by Heisenberg when he emphasized that a Cartesian view of nature as an object “out there” is an illusion in so far as “the observer is always part of the formula, the man viewing nature must be figured in, the experimenter into his experiment and the artist in the scene he paints.” (Heisenberg, 1969). The present study is an attempt to make a step forward in this direction by focusing on the ways and means of involvement of the observer which make him an indelible part of the observation. To get a fresh start let us have a look at the physical universe. Although showing an immense variety, all objects, living and non-living, have some characteristics in common. They all obey the physical laws and they all are engaged in perpetual interactions. How do we tell then the difference between living and non-living objects? According to the traditional concept it is the capacity for reproduction that distinguishes living from non-living objects. (Luria et al., 1981). The non-traditional concept presented in this study stresses the way in which objects interact as the crucial point of difference between living and non-living objects. This concept claims that living objects assert themselves as such only when and while interacting in terms of information processing. Under such conditions only, living objects are able to display relative independence of the physical laws, for instance active movement. This display of relative independence is governed by biological laws and defines the behaviour of the living objects as active in principle. All objects who share these characteristics are called living, they behave as wholes assessing themselves as individuals. The definition suggests that they all share the same internal organization which is principally dynamic.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00048420
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  • 4
    Electronic Resource
    Electronic Resource
    Der Feldbegriff in seiner Anwendung auf das Problem der Zellteilung (1936)
    Springer
    Acta biotheoretica 2 (1936), S. 77-92 
    Details
    ISSN: 1572-8358
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Résumé Les auteurs démontrent que dans certains tissus survivants (la cornée des yeux de grenouille et le cancer de souris) les mitoses continuent leur processus d'évolution durant au moins une heure. Par l'application de chaleur aussi bien que par l'irradiation mitogénétique on peut accélérer beaucoup le rhythme des mitoses en cours d'évolution et provoquer (dans les cas de cancer seulement) l'apparition d'un nombre considérable de nouvelles mitoses. L'analyse de l'action de ces deux facteurs d'énergie aboutit à la conclusion qu'il ne peut s'agir que d'un dérangement des constellations instables des éléments du corps cellulaire. On peut en déduire qu'un certain degré de désorganisation du plasme est favorable aux divisions cellulaires. En poursuivant et en développant cette conception, les auteurs arrivent à la conception du „champ cellulaire de division”, définissant les trajectoires des particules élémentaires comme fonction de ses coordonnés relativement aux axes des cellules.
    Notes: Summary The authors show that in certain isolated tissues (cornea of frog, mouse cancer) the mitotic processes continue during at least one hour. They are very strongly stimulated by heat and also by mitogenetic radiation. In the case of the cancer cells new mitoses are promoted in considerable number. A detailed analysis of both energy factors leads to the conclusion that they effect a disturbance of the unstable constellations (structures) of the elementary particles in the cell-body. Thus a certain degree of disorganisation of its plasma seems to stimulate cell-division. This statement is, in the opinion of the authors a proof that cell-division is controlled by a ”field”, the trajectories of the elementary particles of the cell-body being a function of their coordinates relative to the cell-axes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01602055
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  • 5
    Electronic Resource
    Electronic Resource
    Structure of fruticuline B: A new natural anthracene quinodimethide of abietanoid origin (1987)
    Springer
    Journal of chemical crystallography 17 (1987), S. 761-770 
    Details
    ISSN: 1572-8854
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract The title compound is C19H18O4·1/2 CH3OH, triclinic,P¯1,a=9.891(2),b=13.273(4),c=13.860(4) Å,a=66.47(2),β=86.91(2), and γ=85.59(2)°. The structure was solved by direct methods and refined by least-squares techniques to anR factor of 0.082 for 2282 observed reflections. The X-ray structure uniquely resolves the one remaining ambiguity, namely the assignment of the correct structure4. There are two crystallographically independent molecules (A and B) and one disordered methanol molecule. Both molecular skeletons show small distortions from planarity with inclinations of 1.7 and 4.0° between the outermost rings A/C in molecules A and B, respectively. Intramolecular hydrogen bonds of the form O(3A)-H⋯O(2A) and O(3B)-H⋯O(2B) are observed in molecules A and B, respectively. The molecules are linked by pairs of O(3A)-H⋯O(2B) and O(3B)-H⋯O(2A) hydrogen bonds. The dimerlike structures are stabilized by intermolecular C-H⋯O interactions and van der Waals forces.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01160740
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  • 6
    Electronic Resource
    Electronic Resource
    On the design of nested iterations for elliptic difference equations (1972)
    Springer
    BIT 12 (1972), S. 63-71 
    Details
    ISSN: 1572-9125
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract By “Richardson extrapolation from 2h andh toh/2” the results of computations with coarse grids are used for the construction of an initial approximation on finer grid. After a rather small number of iterations high accuracy is obtained. Numerical results are given for the two-dimensional Laplace equation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01932674
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  • 7
    Electronic Resource
    Electronic Resource
    A note on the “nested iterations” method (1975)
    Springer
    BIT 15 (1975), S. 107-110 
    Details
    ISSN: 1572-9125
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01933003
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  • 8
    Electronic Resource
    Electronic Resource
    Über den Durchschlag fester Isolatoren (1925)
    Springer
    The European physical journal 32 (1925), S. 273-286 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Zusammenfassung Die von Wagner vorgeschlagene und von Rogowski und Kármán weiterentwickelte Wärmetheorie des Durchschlags wird diskutiert. Es wird gezeigt, daß die von der Theorie geforderte Abhängigkeit von der Temperatur und der Dicke des Isolators für Steinsalz bei hohen Temperaturen tatsächlich erfüllt wird. Es werden die absoluten Werte der Durchschlagspannungen berechnet, die sicli von der richtigen Grö Bsenordnung erweisen. Es wird ferner bezweifelt, daß der Durchschlag bei Zimmertemperaturen nach der reinen Wärmetheorie vor sich geht und auf die Möglichkeit einer kombinierten Isolations-Wärmetheorie hingewiesen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01331671
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  • 9
    Electronic Resource
    Electronic Resource
    Untersuchungen über die Thermostabilität der aus Hühnerfibroblasten isolierten Ribonucleinsäuren (1970)
    Springer
    Monatshefte für Chemie 101 (1970), S. 1483-1492 
    Details
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract Cytoplasmic ribonucleic acids can be extracted from chick embryo cells with phenol and sodium dodecyl sulfate at 2°. If these ribonucleic acids are heated to 40° and above and chilled, the structure of the 28S ribosomal RNA is changed so that it sediments at about 26S. The 18S and 4S ribonucleic acids are not altered in sedimentation behaviour by heating and cooling. Moreover the 28S RNA is also more susceptible to breakdown to smaller molecules even in the presence of the ribonuclease inhibitor diethyl pyrocarbonate. A small amount of RNA sedimenting at about 41S, probably ribosomal precursor RNA, can also be extracted at 2°. It is also subject to change in sedimentation rate and to fragmentation when heated above 40°.
    Notes: Zusammenfassung Aus intakten Hühnerfibroblasten können die cytoplasmatischen Ribonucleinsäuren durch Behandlung mit Phenol und Natriumlaurylsulfat bei 2° extrahiert werden. Werden die Nucleinsäuren auf 40° oder darüber hinaus erwärmt und rasch abgekühlt, so ändert sich die Struktur der 28S-Ribosomen-RNS derart, daß sie bereits bei etwa 26S sedmentiert, während die Sedimentationsgeschwindigkeiten der 18S-RNS und der 4S-RNS unverändert bleiben. Darüber hinaus scheint die 28S-RNS gegenüber Spaltung zu kleineren Molekülen besonders empfindlich zu sein; ein wenn auch geringerer Abbau findet selbst in Anwesenheit von Diäthyl-pyrocarbonat statt. Eine kleine Menge einer Ribonucleinsäure, die bei etwa 41S sedimentiert, wurde ebenfalls durch Phenol-Extraktion bei 2° freigesetzt. Diese RNS, die höchstwahrscheinlich mit der im Nucleolus befindlichen Stamm-RNS, aus der die 18S-und 28S-RNS hervorgehen, identisch ist, neigt ebenfalls stark zu Fragmentierung durch Erhitzen auf 40° und darüber hinaus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00911414
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  • 10
    Electronic Resource
    Electronic Resource
    Durchschlag von Glas (1926)
    Springer
    The European physical journal 37 (1926), S. 292-303 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Zusammenfassung Es wird bewiesen, daß bei höheren Temperaturen der Durchschlag in Glas nach der Wärmetheorie vor sich geht. Beim Übergang zu niedrigeren Temperaturen tritt bei 60 bis 100°, je nach der Art des Glases, sehr scharf ein neuer Mechanismus des Durchschlages ein, der bis zu den Zimmertemperaturen bestehen bleibt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01397102
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