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  • 1
    Electronic Resource
    Electronic Resource
    Evolution of fumarolic gases — boundary conditions set by measured parameters: case study at Vulcano, Italy (1988)
    Springer
    Bulletin of volcanology 50 (1988), S. 71-85 
    Details
    ISSN: 1432-0819
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Physical, chemical and isotopic parameters were measured in fumaroles at the Vulcano crater and in drowned fumaroles near the beach. The data were used to define boundary conditions for possible conceptual models of the system.Crater fumaroles: time variations of CO2 and SO2 concentrations indicate mixing of saline gas-rich water with local fresh water. Cl/Br ratios of 300– 400 favour sea-water as a major source for Cl, Brand part of the water in the fumaroles. Cl concentrations and δD values revealed, independently, amixing of 0.75 sea-water with 0.25 local freshwaterin furmarole F-5 during September 1982.Patterns of parameter correlation and mass balances reveal that CO2, S, NH3 and B originate from sources other than sea water. The CO2 value of δ13C = − 2%o favours, at least partial, origin from decomposition of sedimentary rocks rather than mantle-derived material. Radiogenic4He(1.3 × lO−3 ccSTP/g water) and radiogenic40Ar(10.6 × 10−4 ccSTP/g water) are observed, (4He/40Ar)radiogenic = 1.2, well in the range of values observed in geothermal systems.Drowned fumaroles: strongly bubbling gas at a pond and at the beachappears to have the same origin and initial compositionas the crater fumaroles (2 km away). The fumarolic gas is modified by depletion of the reactive gases, caused by dissolution in shallow-water. Atmospheric Ne, Ar, Kr and Xe are addeden route, some radiogenic He and Ar are maintained. The Vulcano system seems to be strongly influenced by the contribution of sea-water and decomposition of sedimentary rocks. Evidence of magmatic contributions is mainly derived from heat.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01275170
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  • 2
    Electronic Resource
    Electronic Resource
    Charcot-Marie-Tooth disease: study of a large kinship with an intermediate form (1985)
    Springer
    Journal of neurology 232 (1985), S. 91-98 
    Details
    ISSN: 1432-1459
    Keywords: Charcot-Marie-Tooth disease ; Intermediate form
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A clinical, genetic, electrophysiological and ultrastructural study of a large kinship with peroneal muscular atrophy is reported. There was a noteworthy homogeneity in the phenotype as well as in the electrophysiological characteristics encountered in 15 affected members aged between 7 and 72 years. The symptoms appeared first in the second decade of life and stabilized by the fourth decade. There was no evidence of linkage of the neuropathy gene to the Duffy blood group locus on chromosome 1. The electrophysiological data in this family as well as the ultrastructural findings confirm that there is heterogeneity in hereditary motor and sensory neuropathy type I, and support the concept of an intermediate form of Charcot-Marie-Tooth disease.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00313907
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Diagnostic specificity of sensory and motor nerve conduction variables in early detection of carpal tunnel syndrome (1989)
    Springer
    Journal of neurology 236 (1989), S. 208-213 
    Details
    ISSN: 1432-1459
    Keywords: Carpal tunnel syndrome ; Neural conduction ; Median nerve ; Ulnar nerve ; Radial nerve
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In the carpal tunnel syndrome (CTS) sensory nerve conduction is more sensitive than motor conduction. However, 8%–25% of the sensory distal latencies in symptomatic hands may still be normal. A systematic study was made of the median, ulnar and radial orthodromic nerve conduction velocities (SNCV) stimulating each of the fingers separately. Four SNCVs from the median nerve, two SNCVs from the ulnar nerve and one from the radial nerve were obtained, and the ratio of the median to radial SNCV and the ratios of the median and ulnar SNCVs were estimated. The significance of these parameters in the diagnosis of the CTS was studied, and a rapid technique for the screening of nerve entrapment in the initial stages of the disease is proposed. Three hundred and seventy-five symptomatic hands were examined. Seventy-five hands showed normal distal latency, in which cases, however, the SNCV of the ring finger was always outside the normal range, while the SNCVs of the thumb, index and middle fingers were abnormal in 64%, 80% and 92% of cases respectively. The amplitudes of the sensory responses were the least sensitive of the parameters studied. Our results suggest that a study of the median nerve digital branch to the ring finger may be of value in providing an easily performed and rapid technique for screening an early median nerve entrapment at the wrist.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00314501
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    Paper (German National Licenses)
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