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  • taxonomy  (3)
  • 81Fxx  (1)
  • Computer  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Three-dimensional endoluminal ultrasound (1997)
    Springer
    Diseases of the colon & rectum 40 (1997), S. 47-50 
    Details
    ISSN: 1530-0358
    Keywords: Rectal cancer ; Ultrasound ; Three-dimensional ; Image processing ; Computer
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract PURPOSE: This study was designed to evaluate the application of three-dimensional (3D) transrectal ultrasound (TRUS) in diagnostics, staging, and treatment planning of rectal cancer. METHOD: Transversal images, generated during conventional TRUS examination, are recorded by means of a specially designed computer-based system to obtain a 3D array of slices, covering the whole region of interest. Different structures (normal or pathologically affected) are segmented, isolated, and rendered using the tools of the system to produce a realistic spatial view of investigated organs. Dynamic movies are also generated and replayed for better realization of spatial interrelations of studied objects. RESULTS: Nineteen patients (18 with rectal cancer and 1 who was healthy) have been examined. In 15 patients, full 3D TRUS reconstruction was performed. Results are illustrated with several examples from the studied group. CONCLUSION: We consider 3D TRUS a useful add-on to conventional TRUS. It may significantly improve understanding of the interrelation between normal and pathologic structures and help to exact preoperative staging and treatment planning of rectal carcinoma patients.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02055681
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Asymptotic triviality of the Møller operators in Galilei invariant quantum field theories (1991)
    Springer
    Letters in mathematical physics 21 (1991), S. 343-350 
    Details
    ISSN: 1573-0530
    Keywords: 81Exx ; 81Fxx
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Notes: Abstract Asymptotic triviality of the Møller operators is shown for fermions interacting via nonlocal pair-potentials with a momentum cut-off. Such systems have stable Hamiltonians, defining the time evolution in the Heisenberg representation, and strong mixing properties.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00398332
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Dicranophoridae (Rotifera) from the Alps (1998)
    Springer
    Hydrobiologia 387-388 (1998), S. 63-77 
    Details
    ISSN: 1573-5117
    Keywords: Dicranophoridae ; Austria ; alpine water bodies ; taxonomy ; biogeography ; ecology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Rotifera of the family Dicranophoridae Harring, 1913 were recorded from mountainous altitudes of the Austrian Alps. Here, their morphology, distribution and ecology is detailed. The description of Encentrum walterkostei Jersabek is amended by observations on living animals. Of 19 species encountered, all but four are new to the alpine region, nine species are first records for the biogeographic region 'Alps'. Four species are new to science and will be published elsewhere. The majority are cosmopolites or widely distributed taxa, but also species with a more limited range, possibly endemics, seem to exist. Most species can be characterized as being more commonly found in cold environments, some of them are known to be psammobiontic or psammophilic.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1017017120656
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Encentrum (Parencentrum) walterkostei n. sp., a new dicranophorid rotifer (Rotatoria: Monogononta) from the high alpine zone of the Central Alps (Austria) (1990)
    Springer
    Hydrobiologia 281 (1990), S. 51-56 
    Details
    ISSN: 1573-5117
    Keywords: Encentrum ; Dicranophoridae ; alpine rotifers ; psammon ; taxonomy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A new dicranophorid rotifer, Encentrum (Parencentrum) walterkostei n.sp., is described from an oligotrophic alpine lake. The species was abundant in the psammolittoral of the ‘Unterer Schwarzhornsee’, 2543 m above sea level. The main distinguishing taxonomic features of the new species are long, swordshaped toes and only four vitellary nuclei. Its known occurrence in the sandy substrate of only one lake suggests a stenobiontic nature of this apparently oligothermic new species. Taxonomic problems associated with the Encentrum/Dicranophorus group are briefly discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00006555
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Dicranophoridae (Rotifera) from the Alps (1998)
    Springer
    Hydrobiologia 287-388 (1998), S. 63-77 
    Details
    ISSN: 1573-5117
    Keywords: Dicranophoridae ; Austria ; alpine water bodies ; taxonomy ; biogeography ; ecology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Rotifera of the family Dicranophoridae Harring, 1913 were recorded from mountainous altitudes of the Austrian Alps. Here, their morphology, distribution and ecology is detailed. The description of Encentrum walterkostei Jersabek is amended by observations on living animals. Of 19 species encountered, all but four are new to the alpine region, nine species are first records for the biogeographic region 'Alps'. Four species are new to science and will be published elsewhere. The majority are cosmopolites or widely distributed taxa, but also species with a more limited range, possibly endemics, seem to exist. Most species can be characterized as being more commonly found in cold environments, some of them are known to be psammobiontic or psammophilic.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1017017120656
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
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