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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    European journal of wildlife research 20 (1974), S. 209-212 
    ISSN: 1439-0574
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Summary Three measurements were taken on each of 25 lower jaws of hare to estimate the possible interdependence in growth in length of the jaw, the tooth, and in width of the oral cavity. The date were not sufficient to establish clearly an age dependence, but a high probability points in this direction. This work will hopefully instigate further collection of data to enable age-estimation with the aid of age-dependent growth factors.
    Abstract: Résumé Trois mensurations (croissance en longueur du maxillaire inférieur, croissance en longueur des dents et croissance en largeur de la cavité dentaire) ont été effectuées sur les maxillaires inférieurs de 25 lièvres en vue de relever d'éventuelles corrélations avec leur âge. Malgré l'insuffisance du matériel examiné, une relation hautement probable a pu être mise en évidence. Ce travail devrait inciter les milieux cynégétiques à recueillir un matériel plus abondant qui permettrait d'élaborer une méthode de détermination de l'âge sur la base de ces relations biométriques.
    Notes: Zusammenfassung An 25 Unterkiefern von Hasen wurden drei Meßwerte zum Längenwachstum des Unterkiefers, zum Längenwachstum des Zahnes und zum Breitenwachstum der Zahnhöhle auf ihre möglichen Abhängigkeiten zum Alter überprüft. Für eine exakten Nachweis der Altersabhängigkeit reichte das Material nicht aus, aber die hohe Wahrscheinlichkeit der Abhängigkeit konnte doch erhärtet werden. Durch diese Arbeit sollen größere Kreise veranlaßt werden, weiteres Kiefermaterial zu sammeln, um Abhängigkeiten nachweisen und zu einer Altersbestimmungsmethode ausbauen zu können.
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    European journal of wildlife research 26 (1980), S. 126-132 
    ISSN: 1439-0574
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Summary In a wild boar enclosure in Austria, one individual several years old was observed smell marking and defending food. Apples were smell marked with urine and saliva. Young animals did not eat this food after having tested it by sniffing, although the marking ♂ did. The wild boar defended his feeding ground against men. In the process, he showed in a weaker or ritualised form behavioural patterns from the innate characteristics of parading, threatening and fighting. In addition, there is a report of an old boar in which acoustic impulses (the noises of a food container being used by another boar) triggered off a demonstration of rank and appropriation at the feeding ground. This trigger was more forceful than „avoidance of the enemy“. Mention is made of a case of imitation and learning in the overcoming of an obstacle.
    Abstract: Résumé Dans un parc à sangliers situé en Autriche un sanglier mâle adulte a été observé lorsqu'il procédait à des marquages olfactifs et lorsqu'il défendait sa nourriture. Des pommes furent marquées olfactivement au moyen d'urine et de salive. Contrairement au mâle en question, des sujets juvéniles n'ont pas absorbé cette nourriture apreast en avoir goûté par voie olfactive. Le verrat défendit son lieu de nourrissage contre les humains. A cette occasion il manifesta, sous une forme atténuée ou ritualisée, un comportement spécifique de défi, de menace et de combat. On fait également état d'une démonstration de rang social et d'appropriation sur une aire de nourrissage par un sanglier mâle âgé déclenchée par des stimuli acoustiques simulant le bruit provoqué par l'utilisation de mangeoires par d'autres sangliers. Ce déclencheur était plus puissant que l'„évitement d'un ennemi“. On signale un cas d'imitation et d'apprentissage lors du franchissement d'un obstacle.
    Notes: Zusammenfassung In einem österreichischen Wildschweingatter wurde ein mehrjähriger Keiler beim Duftmarkieren und Verteidigen von Futter beobachtet. Mit Harn und Speichel wurden Äpfel geruchlich markiert. Jungtiere haben dieses Futter nicht verzehrt, nachdem sie es olfaktorisch geprüft hatten, wohl aber das markierende ♂. Gegenüber Menschen verteidigte der Keiler seinen Futterplatz. Dabei zeigte er in abgeschwächter od. ritualisierter Form Verhaltensweisen aus dem innerartlichen Imponier-, Droh- und Kampfverhalten. Es wird ferner berichtet über einen alten Keiler, bei dem akustische Reize, die Geräusche eines von anderen Wildschweinen benutzten Futterbehälters, eine Rang- und Inbesitznahmedemonstration am Futterplatz auslösten. Dieser Auslöser war stärker als die „Feindvermeidung“. Ein Fall von Nachahmung und Lernen bei der Überwindung eines Hindernisses wird erwähnt.
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 39 (1980), S. 233-238 
    ISSN: 1434-6036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The characteristic ferroelectric dispersion of the complex dielectric constant of the ferroelectric AgNa(NO2)2 is measured as function of temperature and hydrostatic pressure. For the first time the temperature and pressure dependences of the static order parameter susceptibility and the order parameter relaxation time could be reproducibly determined. The results are interpreted in terms of a kinetic Ising model, whose parameters show a characteristic pressure dependence. The results are discussed on the basis of thermodynamic relations and related to the dynamical behaviour of other order-disorder ferroelectrics.
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Journal of applied electrochemistry 22 (1992), S. 204-214 
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract One of the primary obstacles to be overcome for the development of economical fuel cells is the high cost of the membrane electrolyte. The currently favoured polymer electrolytes consist of poly(tetrafluoroethylene) backbone structures and poly(perfluorosulphonic acid) side chains. In an effort to find lower cost membranes, some radiation-grafted copolymer membranes were investigated. All the membranes contained poly(styrenesulphonic acid) side chains. Three different backbone polymer structures were studied: low-density poly(styrene), poly(tetrafluoroethylene)/poly(perfluoropropylene), and poly(tetrafluoroethylene). The results indicate that the membrane consisting of a poly(tetrafluoroethylene)/poly(styrenesulphonic acid) copolymer is a promising candidate as a fuel-cell electrolyte.
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 291 (1979), S. 77-86 
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Sources of149Nd were produced by thermal-neutron irradiation of enriched148Nd. High resolution Ge(Li) spectrometers were used to collect gamma-ray singles and coincidence spectra in the study of the decay of 1.7-h149Nd. A total of 214 gamma rays have been assigned to the decay of149Nd, and 201 of these transitions have been placed in a level scheme of149Pm involving 42 excited states. Absolute values for the beta-group intensities were determined for transitions to the149Pm levels, and spin and parity assignments were made for many of the observed states. The experimentally determined level structure of149Pm was compared with corresponding levels in other odd-mass Pm and Eu nuclides. Interpretations were made in terms of the core-coupling model. Radioactive decay148Nd(n, γ)149Nd; measuredE γ,I γ,γ-γ coinc.149Pm deduced levels,J,π. Compton-suppression. Ge(Li) detector. Enriched targets.
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  • 6
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The isochronal and isothermal recovery of the electrical resistivity after large homogeneous compression of copper and silver was measured with a low frequency eddy current method. Two relations between the recovery data and the flow stress were found: 1. For high purity copper and silver the recovery of the electrical resistivity with recrystallization is proportional to the square of the flow stress. 2. The temperature at which half of the resistivity decrease with recrystallization is reached may be related to the flow stressσ by the equation $$\sigma ^2 e^{ - a/T_R } = const$$ . The present experiments indicate that a simple relation between the quantitya and the activation energy for recrystallization cannot be given.
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 296 (1980), S. 81-85 
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The half-life of the 1/2− isomer in89Mo has been determined in an experiment where an enriched92Mo target was irradiated by 350 or 700 ms bursts of 60 MeV protons. Analysis of the gamma-ray spectra collected as a function of time between irradiations revealed gamma rays at 118.8 and 268.5 keV decaying with a 190±15 ms half-life. The hindrance ofE3 transitions inN=47 andZ=47 nuclides is discussed.
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 283 (1977), S. 415-416 
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The half life of the 376.7-keV level in111 Ag, populated in the decay of111 Pd isomers, has been determined to be 16±1 ns. Compton-suppressed γ-ray spectra and γγ coincidence spectra have also been taken. These data, combined with recent charged-particle transfer data establish 3/2+ as the spin and parity of the 376.7-keV111Ag level. Our observed lifetime and γ-ray branching can be interpreted as strong indications of shape isomerism in111Ag similar to that found in odd-mass In nuclides.
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  • 9
    ISSN: 1434-6036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The23Na NMR first order quadrupolar satellite lines are detected and studied in AgNa(NO2)2 single crystals near the paraelectric-ferroelectric phase transition. Although the intensities of the satellites are small the components of the electric field gradient tensor (EFG) at the23Na sites could be deduced from the angular dependence of the first order quadrupolar line splitting with respect to rotations around the three crystallographic axes by applying the Volkoff method. In the paraelectric phase the principal axes system of the EFG coincides with the crystallographic axes system whereas in the ferroelectric phase there is a strongly temperature dependent small non diagonal elementφ xz (T). The EFG principal componentsφ xx andφ yy are strongly influenced whereas the EFG principal componentφ zz is nearly not affected by the ferroelectric phase transition. The observed temperature dependences of the EFG components are related to the temperature variation of the normalized spontaneous polarizationS(T) by assuming a coupling term which is quadratic inS(T). Finally the problem of the intensities of the satellite lines is discussed.
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 27 (1971), S. 377-378 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Comparative labelling of the mouse brain with tritiatedd, l-proline andl-proline reveals a dissimilarity of incorporation between the optical isomers of this amino acid. The differential regional distribution pattern ofd-proline can be correlated to the cerebral distribution of the enzyme activity ofd-aminoacid-oxidase in the mouse brain.
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