GLORIA

GEOMAR Library Ocean Research Information Access

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
  • 1980-1984  (8)
  • 1955-1959  (1)
Document type
Keywords
Publisher
Language
Years
Year
  • 1
    Online Resource
    Online Resource
    Acoustics Dictionary : Quadrilingual: English, German, French, Dutch. (1983)
    Dordrecht :Springer Netherlands,
    Details
    Keywords: Sound-Dictionaries-Polyglot. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (106 pages)
    Edition: 1st ed.
    ISBN: 9789400967878
    URL: https://ebookcentral.proquest.com/lib/geomar/detail.action?docID=6558529
    Language: English
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    GEOMAR EBL
  • 2
    Electronic Resource
    Electronic Resource
    Zum Vasopressin-Oxytocin-Antagonismus beim Menschen (1959)
    Springer
    Journal of molecular medicine 37 (1959), S. 325-329 
    Details
    ISSN: 1432-1440
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Zusammenfassung Bei gewässerten Versuchspersonen bewirkt die intravenöse Gabe von 1 · 10−4 IE/kg Vasopressin (Tonephin „Hoechst“) eine konstante Hemmung der Diurese mit Verminderung der absoluten Na.-, K.- und Cl'-Ausscheidungen trotz Konzentrationsanstieg dieser Ionen. Dabei kommt es zu einer zeitlichen Verschiebung zwischen Antidiurese und Konzentrationsanstieg der Ionen im Harn. Während der Wasserdiurese hat Oxytocin (Oxytocin „Hormonchemie“ oder Syntocinon „Sandoz“) in Dosen von 2–6 · 10−4 IE/kg, intravenös gegeben, keinen deutlichen Effekt auf die Wasser-, Na.-, K0.-und Cl'-Ausscheidungen. Wenn Oxytocin (2–6 · 10−4 IE/kg intravenös) 15 min vor Vasopressin (1 · 10−4 IE/kg intravenös) gegeben wird, vermag es die Vasopressinwirkungen wie Diuresehemmung, Konzentrationsanstieg der Ionen im Harn bei Minderung der absoluten Ionenausscheidungen, ganz aufzuheben. Bei gleichzeitiger Gabe von Oxytocin und Vasopressin im Verhältnis 2:1 tritt die zu erwartende Anti-diurese vermindert und zeitlich verkürzt ein, bei Konzentrationsanstieg der untersuchten Ionen und nahezu gleichbleibender absoluter Ionenausscheidung. Eine kompetitive Hemmung der Vasopressinwirkung durch Oxytocin wird angenommen. Hochgereinigtes Oxytocin und synthetisches Oxytocin verhalten sich wirkungsgleich.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01483481
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Analogy between hologram formation and computation of relative movement by the visual system of the fly (1980)
    Springer
    Naturwissenschaften 67 (1980), S. 411-412 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00405491
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Processing of optical data by the visual system of insects (1980)
    Springer
    European biophysics journal 6 (1980), S. 21-22 
    Details
    ISSN: 1432-1017
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00647498
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    On the representation of multi-input systems: Computational properties of polynomial algorithms (1980)
    Springer
    Biological cybernetics 37 (1980), S. 167-186 
    Details
    ISSN: 1432-0770
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Computer Science , Physics
    Notes: Abstract This paper introduces a theoretical framework for characterizing and classifying simple parallel algorithms and systems with many inputs, for example an array of photoreceptors. The polynomial representation (Taylor series development) of a large class of operators is introduced and its range of validity discussed. The problems involved in the polynomial approximation of systems are also briefly reviewed. Symmetry properties of the input-output map and their implications for the system structure (i.e. its kernels) are studied. Finally, the computational properties of polynomial mappings are characterized.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00355455
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Visual fixation and tracking by flies: Mathematical properties of simple control systems (1981)
    Springer
    Biological cybernetics 40 (1981), S. 101-112 
    Details
    ISSN: 1432-0770
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Computer Science , Physics
    Notes: Abstract The study of the orientation behavior of flies requires the consideration of a few simple control systems for fixation and tracking. In this paper two such control systems are analyzed, in terms of the corresponding difference and differential equations. The first control system corrects with a delay ɛ the angular trajectory proportionally to the error angle ψ; the second control system also corrects proportionally to the error angle ψ but only when the absolute value of ψ is increasing. The differential equations are (0) $$\mathop \psi \limits^ \circ (t) = - \alpha '\psi (t - \varepsilon ) + A'$$ and (*) $$\mathop \psi \limits^o (t) = - \alpha '\psi (t - \varepsilon ) \cdot u[\psi (t - \varepsilon )\mathop \psi \limits^o (t - \varepsilon )] + A'$$ u[ ] being the step function (u[x]=1 if x〉0, otherwise u[x]=0). Under suitable restrictions on the parameters it is proved (a) that the difference equations (0') $$x_{n + 1} = x_n - \alpha x_n + A$$ and (*') $$x_{n + 2} = x_{n + 1} - \alpha x_{n + 1} \cdot u[x_{n + 1} \cdot (x_{n + 1} - x_n )] + A,$$ which can be associated to Eqs. (0) and (*), are “asymptotically equivalent” (for large n) if the time scale is “smoothed” over two time units and (b) that the second equation, with 0〈α〈2, always converge to a set of oscillating solutions of period 2 for arbitrary initial conditions. Numerical simulations show that the delay-differential equations behave in a similar way. We have also demonstrated with computer simulations that both control systems can satisfactorily predict the 3-D trajectory of a fly chasing another fly. The main biological implications of the analysis are: (1) The two control systems are practically equivalent descriptions of the fly's control of flight on a “coarse” time scale (2 times the fly's delay), consistently with an earlier more general derivation of Eq. (0) (Poggio and Reichardt, 1973). (2) On a fine time scale the second control system is characterized by an asymptotic oscillation with period twice the fly's delay. It is conjectured that a wide range of control systems of the same general type must have a similar oscillatory behavior. Finally, we predict the existence of asymptotic oscillations in the angular trajectory and the torque of tracking flies (if a control system of the second type is involved to a significant extent). Such oscillations should have a basic period of twice the effective reaction delay, and should be best detectable outside the binocular region. Closed loop experiments and the analysis of free flight trajectories may provide critical tests of this prediction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00344289
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    A neuronal circuitry for relative movement discrimination by the visual system of the fly (1981)
    Springer
    Naturwissenschaften 68 (1981), S. 443-446 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Notes: Abstract We propose the basic structure of a neuronal circuitry possibly underlying the detection of discontinuities in the optical flow by the visual system of the housefly. The main features of the circuitry are: binocular cells summate elementary movement detectors over a large visual field and inhibit each one of them; inhibition is of the shunting type, with an inhibitory equilibrium potential very near the resting potential. A specific model implementing our proposal accounts for all the behavioral data on relative movement discrimination, including the characteristic dynamics of the response.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01047513
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Statistische Untersuchung über Zahnalter und Skelettalter bei Patienten mit Lippen-Kiefer-Gaumen-Spalten (1981)
    Springer
    Journal of orofacial orthopedics 42 (1981), S. 353-362 
    Details
    ISSN: 1615-6714
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary In a cross-sectional study, dental and skeletal age of patients with cleft lip und cleft palate, were statistically compared with those of unaffected children. It was shown that the skeletal age of cleft patients is only slightly retardet (not significantly) as compared with the skeletal age of normal healthy children. Dental age, however, of cleft patients (boys and girls) differs very significantly from that of the unaffected group.
    Abstract: Résumé A l'aide d'une étude longitudinale, on a examiné statistiquement la corrélation entre l'âge dentaire et l'âge osseux en comparant des patients présentant des divisions labiales et palatines avec des enfants sains. Par rapport aux enfants normaux, l'âge osseux n'est pas modifié ou très légèrement retardé. Par contre l'âge dentaire des patients porteurs de ces malformations présente des écarts très importants aussi bien chez les garçons que chez les filles.
    Notes: Zusammenfassung Anhand einer Querschnittsuntersuchung wurde die Korrelation Zahnalter und Skelettalter bei Patienten mit Lippen-Kiefer-Gaumen-Spalten im Vergleich zu gesunden Kindern statistisch untersucht. Es zeigt sich, daß das Skelettalter nur geringfügig und nicht signifikant hinter dem der gesunden Vergleichsgruppe zurückliegt. Für das Zahnalter konnten jedoch sowohl bei den Knaben als auch bei den Mädchen hochsignifikante Abweichungen nachgewiesen werden.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02170424
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Inelastic neutron scattering by the quasi two-dimensional librational modes in K2SnCl6 (1981)
    Springer
    The European physical journal 41 (1981), S. 321-328 
    Details
    ISSN: 1434-6036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The origin of the diffuse streaks observed in the high temperature phase of K2SnCl6 is explained in terms of a dynamical model in which [SnCl6] octahedra are coupled by torsional springs. The magnitude and the temperature dependence of the torsional spring constants is derived from inelastic neutron scattering data. The librational modes are soft and overdamped at room temperature, and a central component is observed up to 170 K above the lattice instability which occurs atT c1 =261.5 K.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01307321
    Location Call Number Limitation 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...