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  • 1
    Electronic Resource
    Electronic Resource
    Rare Earth Graphite Intercalates (1957)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 79 (1957), S. 5897-5899 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja01579a017
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  • 2
    Electronic Resource
    Electronic Resource
    The Role of Individual Differences and External Variables in a Test of the Sufficiency of Fishbein's Model to Explain Behavioral Intentions to Conserve Water (1982)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of applied social psychology 12 (1982), S. 0 
    Details
    ISSN: 1559-1816
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Psychology
    Notes: The sufficiency of fishbein's attitude model was tested with respect to behavioral intentions to conserve water. Regression analysis showed subjective norms (SN) to be the variable most highly correlated with intentions. It was also found that, contrary to the model, SN and evaluative attitudes (Aact) did not adequately mediate all the variation in intentions accounted for by the variables included in this analysis. Age was found to be an important external variable in explaining water conservation intentions, The equations of the models which predict SN and Aact were also analvzed. Analysis of regressions for dichotomized groups revealed strong individual differences in regression equations. Age, along with SN and Aact, was found to be an important variable in accounting for individual differences. The findings are discussed in relation to the sufficiency of Fishbein's model and the role of individual differences in Understanding water conservation intentions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1559-1816.1982.tb00850.x
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  • 3
    Electronic Resource
    Electronic Resource
    A multivariate study of mandibular characters in fifth instar workers and nymphs ofDrepanotermes perniger (Froggatt) (Isoptera: Termitinae) (1975)
    Springer
    Insectes sociaux 22 (1975), S. 293-306 
    Details
    ISSN: 1420-9098
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Résumé Les mandibules des ouvriers du troisième âge (O3) et des nymphes du quatrième àge (N4) deDrepanotermes perniger, tous les deux du cinquième stade, diffèrent les unes des autres en taille et en forme. Les caractères mandibulaires ne sont d'aucune valeur discriminante si on les considère séparément, mais une variable canonique, basée seulement sur trois ou quatre caractères de l'une ou l'autre mandibule analysée individuellement ou, dans les cas d'une analyse combinée des deux mandibules, basée sur six caractères, permet de différencier complètement les deux castes. On obtient des résultats analogues (avec O3 et N4) sur des populations deDrepanotermes perniger d'autres origines, éloignées jusqu'à 3,500 km de la série de référence pour laquelle on a déterminé la variable canonique. Ce type d'analyse serait peut-être applicable aux études du polyéthisme des termites, et de la spécialisation fonctionnelle des associations sympatriques d'espèces apparentées.
    Notes: Summary The mandibles of third-stage workers and fourth-stage reproductive nymphs ofDrepanotermes perniger, both of the fifth instar, differ in size and shape. Measurements are of no diagnostic value taken singly, but scores from a canonical variate based on as few as three or four measurements of either mandible analysed individually, or a total of six measurements for a combined analysis based on both mandibles, effect complete separation of the two castes. Similar separation is achieved with W3 and N4 from populations ofD. perniger collected up to approximately 3,500 km from the source of the reference series from which the canonical variate was calculated. Such multivariate analyses may be helpful in studies of polyethism in termites, and of structural and functional specialisation in sympatric associations of closely related species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02223078
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  • 4
    Electronic Resource
    Electronic Resource
    Laboratory growth of early juveniles of the western rock lobster Panulirus longipes cygnus (1976)
    Springer
    Marine biology 39 (1976), S. 31-39 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Growth in the laboratory of early juvenile Panulirus longipes cygnus George from the last larval (puerulus) stage to approximately 3 years of age is described. Specimens were held either in isolation or in groups of 3 or 5 rock lobsters per tank, at constant temperatures of 20° or 23°C (both ± 0.5 C°) or at the temperatures of the incoming seawater, which ranged annually between 14.9° and 25.9°C. Metamorphosis from the planktonic puerulus to the settled juvenile existence involved a reduction in size and usually took about two moults to complete. By this time the sexes could be distinguished. Growth in aquaria from the 2nd moult after puerulus until the juveniles were approximately 3 years of age was adequately described by exponential (von Bertalanffy) functions, with the growth curves gradually tapering off after the rock lobsters had reached 40 to 42 mm carapace length. Young juveniles were not gregarious until 20 to 25 mm carapace length (approximately 1.5 years old), however, growth rates were not depressed in individuals held in isolation up to approximately 3 years of age. Temperature markedly affected growth; the fastest observed growth up to 450 days was at 23°C. Variations in temperature resulted in decreased growth rates in “winter” and the reverse in “summer” in individuals at ambient temperatures. There was an increase in the moult increment at successive moults corresponding to increased carapace length, but increased growth rates were achieved through shortening the intermoult duration. The period of development from the puerulus stage until approximately 1.5 years of age is a distinct phase of development both of behaviour and growth.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00395590
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  • 5
    Electronic Resource
    Electronic Resource
    Canonical variate analysis with unequal covariance matrices: Generalizations of the usual solution (1984)
    Springer
    Mathematical geology 16 (1984), S. 109-124 
    Details
    ISSN: 1573-8868
    Keywords: canonical variate analysis ; unequal covariance matrices ; multivariate analysis ; foraminifers
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Mathematics
    Notes: Abstract Canonical variate analysis is extended for use when the covariance matrices are not equal. Linear combinations of variates are derived by generalizing either a weighted between-groups approach or the likelihood-ratio test and the associated noncentrality matrix. The usual solution and the two generalizations are compared via generated data for a few typical configurations of means in a situation in which the covariance matrices are in fact equal. The MSE of the canonical variate coefficients and group means for the generalizations are approximately three times those for the usual solution, due to corresponding changes in the variances. Two examples are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01032211
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  • 6
    Electronic Resource
    Electronic Resource
    Mixture models and atypical values (1984)
    Springer
    Mathematical geology 16 (1984), S. 465-477 
    Details
    ISSN: 1573-8868
    Keywords: mixture models ; maximum likelihood solution ; atypical values ; multivariate case
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Mathematics
    Notes: Abstract The resolution of a mixture of two or more populations into its component distributions may be markedly influenced by one or a few atypical values. The maximum likelihood solution effectively assigns (part of) each observation to one or another of the components via the posterior probabilities, even though the observation may be widely discrepant from all components. This paper presents a modification of the mixture problem, in which the typicality of each observation is considered, as well as the posterior probabilities, with the contribution of atypical observations being downweighted. The extension to the multivariate case is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01886327
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  • 7
    Electronic Resource
    Electronic Resource
    Chloride localization in the leaf ofTamarix (1975)
    Springer
    Protoplasma 83 (1975), S. 1-14 
    Details
    ISSN: 1615-6102
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The distribution of chloride in the leaf and salt gland ofTamarix aphylla (L.) Karst was investigated electron microscopically using the silver precipitation technique for chloride. Identification of the electron dense deposits as AgCl was done by electron diffraction. Significant increases of AgCl deposition occurred in the leaf apoplast, the plasmodesmata of the transfusion zone, and the sub-cuticular spaces of the salt glands of salt-treated, secreting material as compared to distilled-water-treated, non-secreting material. These results suggest that the apoplast serves as a shunt from the xylem to the salt gland under conditions of high salinity. The accumulation of chloride in the sub-cuticular space of the glands indicates that this region is a collecting chamber for salts and this is discussed in relation to secretion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01289326
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  • 8
    Electronic Resource
    Electronic Resource
    Scanning electron microscopic study of the hydrolytic degradation of poly(glycolic acid) suture (1982)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Biomedical Materials Research 16 (1982), S. 417-430 
    Details
    ISSN: 0021-9304
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine , Technology
    Notes: This article reports the morphological observations on the surface changes of poly(glycolic acid) sutures which have been exposed to various dosages of γ irradiation (0, 2.5, 5.0, 10, 20, and 40 Mrad) and duration of immersion (0, 7, 14, 28, 48, 60, and 90 days) in a physiological saline buffer. The most important gross morphological characteristics of PGA suture hydrolytic degradation is the formation of surface cracks on the filaments. The regularity of the surface cracks increased with an increase in the γ irradiation and the duration of hydrolysis. Surface cracks were not observed in irradiated sutures that had not been subjected to hydrolytic degradation. The arrangement of the surface cracks, their orientation on the filaments, and the direction of crack propagation provide very useful information for depicting the mechanism of hydrolytic degradation in this class of fibrous material. The microfibrillar model of fiber structure has been used as the basis for the proposed degradation mechanism of PGA in vitro. It is believed that hydrolysis occurs initially in the amorphous regions sandwiched between two crystalline zones, as tie-chain segments, free chain ends, and chain folds in these regions degrade into fragments. As degradation proceeds, the size of the fragments reaches the stage at which they can be dissolved into the buffer medium. This dissolution removes the fragments from the amorphous regions, and surface cracks appeared.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jbm.820160410
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