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  • 1
    Electronic Resource
    Electronic Resource
    Exact results for a dilute Potts model (1980)
    Springer
    Journal of statistical physics 23 (1980), S. 773-782 
    Details
    ISSN: 1572-9613
    Keywords: Dilute Potts model ; phase diagram ; critical probability ; specific heat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Exact results are obtained for the annealed, dilute,q-component Potts model on the decorated square lattice. The phase diagram is found to consist of a high-temperature region, a low-temperature region, and a two-phase region in between which arises only forq〉4: exact expressions for the phase boundary and the critical probability are derived. At the critical point the specific heat is generally finite and has a cusp; the slope of the cusp is finite forq=4 and infinite (vertical) forq=2 and 3.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01008519
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Triangular lattice Potts models (1982)
    Springer
    Journal of statistical physics 28 (1982), S. 351-373 
    Details
    ISSN: 1572-9613
    Keywords: Potts model ; triangular lattice ; Peierls argument ; low temperature series ; phase diagram ; relations with other lattice models
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract In this paper we study the 3-state Potts model on the triangular lattice which has two- and three-site interactions. Using a Peierls argument we obtain a rigorous bound on the transition temperature, thereby disproving a conjecture on the location of its critical point. Low-temperature series are generated and analyzed for three particular choices of the coupling constants; a phase diagram is then drawn on the basis of these considerations. Our analysis indicates that the antiferromagnetic transition and the transition along the coexistence line are of first order, implying the existence of a multicritical point in the ferromagnetic region. Relation of the triangularq-state Potts model with other lattice-statistical problems is also discussed. In particular, an Ashkin-Teller model and the hard-hexagon lattice gas solved by Baxter emerge as special cases in appropriate limits.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01012610
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    The prevalence of diabetic impotence (1980)
    Springer
    Diabetologia 18 (1980), S. 279-283 
    Details
    ISSN: 1432-0428
    Keywords: Diabetic impotence ; prevalence ; aetiological factors
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In a survey of 541 diabetic males, aged 20–59 years, 190 (35%) had erectile impotence. Using linear logistic regression models for analysis the five most significant associations with impotence were age (p〈0.001), treatment with either insulin or oral hypoglycaemic agents (p〈0.001), retinopathy (p〈0.001), symptomatic peripheral neuropathy (p〈0.001) and symptomatic autonomic neuropathy (p〈0.005). The greatest correlations were found in patients with severe microangiopathy, as demonstrated by proliferative retinopathy and symptomatic autonomic neuropathy. In addition the duration of diabetes and the presence of ischaemic heart disease, nephropathy and poor diabetic control may also be associated with diabetic impotence. It is concluded that diabetic impotence is still a common problem and may have a multifactorial aetiology.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00251005
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Changes in erectile responsiveness during androgen replacement therapy (1983)
    Springer
    Archives of sexual behavior 12 (1983), S. 59-66 
    Details
    ISSN: 1573-2800
    Keywords: male sexuality ; erection ; androgen ; hypogonadal
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Psychology
    Notes: Abstract Erections in response to erotic films and fantasies were measured in eight hypogonadal men, with and without androgen replacement, and eight age-matched controls. Erections to films in the hypogonadal men did not differ from those of the controls and were not affected by androgen replacement. Erections to fantasy were significantly smaller and slower to develop in the hypogonadal men and did show significant improvement during androgen replacement. These preliminary results suggest that erections to certain types of stimuli are relatively independent of androgens, whereas the response to fantasy may be androgen dependent. The implications of these findings are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01542116
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    Paper (German National Licenses)
    Fulltext
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