Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 11
    Electronic Resource
    Electronic Resource
    Transients and basins of attraction in neutral network models (1989)
    Springer
    The European physical journal 76 (1989), S. 381-398 
    Details
    ISSN: 1434-6036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Approximate dynamic mean field equations for a generalized Hopfield model are derived, which allow to calculate transient properties of this model. These equations are exact for short times and yield the replica symmetric solution as a stationary solution. They allow reliable computation of retrieval trajectories and basins of attraction of retrieval states, as demonstrated by comparison with simulations. The equations are derived for networks with arbitrary mean activity and results are given for the standard model and for low activities.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01321917
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 12
    Electronic Resource
    Electronic Resource
    The primeval hadron and the Regge law (1985)
    Springer
    Astrophysics and space science 113 (1985), S. 383-390 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The property of potential homogeneity conduces in the hadron semi-classical model proposed to scalings of angular momentum-mass compatible with the behaviour expected by the Regge law. The scaling of the fundamental quantities (length and time) leads in the gravitational case through the same property (potential homogeneity) to scalings of some observable physical quantities (mass, density, intrinsic angular momentum) which in turn together with the imposition of covariance of the Lagrangian give a Regge-like condition.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00650973
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 13
    Electronic Resource
    Electronic Resource
    The average density of the Universe and the Regge law (1986)
    Springer
    Astrophysics and space science 127 (1986), S. 15-20 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We calculate the principal inertia moments of a three-dimensional mass distribution rotating with angular velocity ω in a self-gravitating homogeneous field with axial symmetry. We show that the angular momentumJ may, under certain conditions, be of the Regge-like type. These results are used to evaluate the mass and average density of the Universe.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00637757
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 14
    Electronic Resource
    Electronic Resource
    Zur operativen Behandlung von Gallengangscysten im Kindesalter (1986)
    Springer
    Langenbeck's archives of surgery 367 (1986), S. 271-277 
    Details
    ISSN: 1435-2451
    Keywords: Bile duct dilatation ; Bile duct cyst
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Es wird über neun Fälle einer cystisch-zylindrischen Gallengangserweiterung berichtet, die in den Jahren 1970 bis 1984 an der Kinderchirurgischen Klinik im Dr. von Haunerschen Kinderspital der Universität München operiert wurden. Das Alter der Patienten betrug im Mittel 4,2 Jahre. Als optimales diagnostisches Vorgehen hat sich die Oberbauchsonographie, ergänzt durch eine hepato-biliäre Funktionsszintigraphie oder Computertomographie, bewährt. Die Operationsmethode der Wahl besteht in einer möglichst totalen Excision der Cyste mit nachfolgender End-zu-End-Anastomose oder einer Hepatico-Jejunostomie nach der Roux-Y-Technik. Postoperative Frühkomplikationen wie Cholangitis wurden nicht gesehen, als Spätkomplikation wurde bei einem Patienten eine Anastomosenstenose nach primärer Hepato-Choledochostomie gesehen.
    Notes: Summary Nine cases of cystic and cylindric bile duct dilatation are discussed. They were treated at the Children's Surgical Hospital of the University of Munich from 1970 to 1984. The patients' mean age was 4.2 years. Upper abdominal sonography in combination with hepatobiliary functional scintigraphy or computer tomography has been proven the best diagnostic procedure. The operating procedure of choice is a total cyst excision followed by an end-to-end anastomosis or a hepatojejunostomy according to the RouxY-technique. There were no immediate postoperative complications such as cholangitis. In one case we found a stenosis of the anastomosis after primary hepatocholedochostomy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01263407
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 15
    Electronic Resource
    Electronic Resource
    Mechanical properties of isolated fetal miniature pig lungs after substitution with fluorocarbons (1988)
    Springer
    Research in experimental medicine 188 (1988), S. 425-432 
    Details
    ISSN: 1433-8580
    Keywords: Fluorocarbon ; Surfactant ; Substitution ; RDS
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In our present study we tried to inflate and stabilize isolated immature lungs of fetal minipigs in gestation age of 95 days (= 85% of total normal gestation period) with different fluorocarbons. Based on our previous experiences, the immature lungs at day 95 are almost non inflatable with air [25–27, 29–31]. For our experiments we used fluorocarbon 43 (FC-43) with a surface tension of 16 mN/m and fluorocarbon 72 (FC-72) with a surface tension of 12 mN/m. Eighteen fetal immature lungs were used. In group 1 the lungs were rinsed with FC-43; in group 2 the rinse solution was FC-72, and in group 3 the lungs were untreated. After removing the fluorocarbon, in the case of groups 1 and 2, the lungs were artificially ventilated. Pressurevolume (p–v) curves were registered in the beginning (immediately after FC lavage), after 10 and 20 min of artificial ventilation. Airway opening pressure (pi) and weight-specific end-inspiratory lung compliance (ci) were investigated. Statistically significant differences in weight-specific end-inspiratory compliance were found between FCgroups and untreated group 3, but no stabilization could be seen during the investigation period of 20 min. No statistically significant improvement in weightspecific end-inspiratory compliance was observed between group 1 and 2, although the compliances of group 2 with FC-72 were better than those of group 1 with FC-43 in three p-v diagrams registered in the beginning and after 10 and 20 min of artificial ventilation (Table 2). In airway opening pressure there were no statistically significant differences to be observed between the investigated groups, but the opening pressures of group 2 with FC-72 at 0, 10, and 20 min were always better than those of other groups (Table 1). No significant differences were also seen in wet/dry weight ratio, in content of lipid phosphorus and of phospholipids (dipalmitoylphosphatidylcholine, sphingomyelin, and lysophosphatidylcholine) (Table 3). The data presented here suggest that fluorocarbons facilitate transient the inflation of immature lungs. However, for further permanent stabilization the additional replacement of surfactant phospholipids seems to be necessary.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01852000
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 16
    Electronic Resource
    Electronic Resource
    Extracorporeal piezoelectric lithotripsy using the Wolf-lithotriptor versus low energy lithotripsy with the modified Dornier HM-3: a cooperative study (1987)
    Springer
    World journal of urology 5 (1987), S. 218-224 
    Details
    ISSN: 1433-8726
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In January 1986, a cooperative study was started at the Katharinenhospital in Stuttgart, FRG (modified Dornier HM-3) and Kreiskrankenhaus in Kempten, FRG (Wolf Piezolith 2200) to evaluate the range of indications, efficacy and required anesthesia of both lithotriptors. Stone classification and general indications for interventional therapy were similar in both centers. The Dornier HM-3 operates with a modified generator and a new ellipsoid which provide low pressure lithotripsy. With the Piezolith 2200, 99% of ESWL-treatments were performed without any anesthesia, whereas with the modified Dornier HM-3 lithotriptor, minor analgesia using tramadol was necessary in 92%, epidural anesthesia in 8%. The overall success rate was similar in both centers (Piezolith 2200: 94.5% vs Dornier HM-3: 98%). Only 46% of the patients were treated successfully in one session with the Wolf lithotriptor compared to 88% with the Dornier HM-3. Ultrasound localization with the Piezolith 2200 failed in 58% of ureteral calculi, whereas fluoroscopic stone localization (Dornier HM-3) was insufficient in the majority of slightly or nonopaque calculi.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00327224
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 17
    Electronic Resource
    Electronic Resource
    The contraction fraction (CF) in myocardial studies with Technetium-99m-isonitril (MIBI) — correlations with radionuclide ventriculography and infarct size measured by SPECT (1989)
    Springer
    European journal of nuclear medicine 15 (1989), S. 661-664 
    Details
    ISSN: 1619-7089
    Keywords: Contraction fraction ; 99mTc-MIBI ; SPECT ; Myocardial size ; Radionuclide ventriculography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Criteria for the detection of coronary artery disease in nuclear cardiology include visualization of perfusion defects and functional impairment of contraction. The purpose of this study is to combine both methods in one procedure with the new myocardial perfusion tracer, 99mTc-methoxy-isobutyl-isonitril (MIBI), reducing time and radiation burden to the patient. Following an uncomplicated recovery, ten patients with first myocardial infarction participated in this study. Radionuclide ventriculography (RNV) was performed at rest and during exercise. Within 2–3 days, 370 MBq 99mTc-MIBI were injected and SPECT acquisition commenced 1 h later. Data processing included a scar image in polar coordinates. Areas of significantly reduced tracer uptake were expressed as a percentage of the total myocardial area. Directly following SPECT, resting and maximum exercise gated planar LAO images were recorded and the contraction was quantified. The concept of the contraction fraction (CF) rested on the end systolic change in count distribution: their increase in density and their centripetal concentration. For comparison, geometrical inner edge detection techniques were also applied. All algorithms for describing an EF equivalent were verified by computer simulations, showing a perfect correlation over a wide range of preset EFs. When applied to the patient studies only the non geometric methods revealed a good correlation with the ejection fraction (EF) obtained by RNV, and with the infarct size measured by SPECT. The corresponding correlation coefficients (r), standard errors (SEE) and the regression lines read as follows (in %): CF=0.56×EF+24.8; r=0.87; SEE=4.98; CF=-0.53×SPECT+71.5; r=0.93; SEE=4.19. Thus, estimation of the left ventricular function by the above defined CF is feasible, easy to perform and clinically meaningful. In one procedure with 99mTc-labelled MIBI not only the perfusion abnormalities were detectable, but also any reduction in function by a valied EF equivalent. Although the monochromatic gamma spectrum of the radionuclide provided better tissue penetrating power, the inner edge of the left ventricle was poorly outlined (especially in the stress studies) and does not lend itself to clinical routine practice.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00251680
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 18
    Electronic Resource
    Electronic Resource
    Primäre Lebertumoren im Kindesalter: Eine Analyse von 19 Fällen (1988)
    Springer
    Langenbeck's archives of surgery 373 (1988), S. 159-165 
    Details
    ISSN: 1435-2451
    Keywords: Primary liver tumors ; Childhood
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung In den Jahren 1970 bis März 1987 wurden an unserer Klinik 19 Patienten wegen eines primären Lebertumors behandelt. Unter den malignen Tumoren waren Hepatoblastome und hepatocelluläre Carcinome mit je 7 Fällen gleich häufig vertreten, an gutartigen Tumoren fanden sich 3 Hämangioendotheliome und 2 Hämangiome. Von den 14 Kindern mit Lebermalignomen erhielten 6 lediglich eine PE bei primärer Inoperabilität, in einem Fall konnte nach Chemoembolisation der second-look Eingriff durchgeführt werden. Eine Tumorresektion konnte in 8 Fällen vorgenommen werden. 6 Patienten mit Hepatoblastom sind im ersten Jahr nach Diagnosestellung verstorben, 2 von diesen allerdings an Therapienebenwirkungen. In der Gruppe der hepatocellulären Carcinome lebten nach einer mittleren Beobachtungszeit von 6,4 Jahren (2–15 Jahre) noch 4 Patienten.
    Notes: Summary Nineteen patients were operated on for primary liver tumors at our hospital from 1970 to March 1987. Among malignancies, hepatoblastomas and hepatocellular carcinomas were equally often seen (7 cases each), among benign tumors, there were 3 hemangioendotheliomas and 2 hemangiomas. In 6 of the 14 children with malignant tumors, only a biopsy could be performed due to primary inoperability, tumor excision was possible in 8 cases. Following chemo-embolisation, tumor excision could be carried out in a second-look operation in one case. Six patients with hepatoblastoma died within 6 months following diagnosis, 2 of them, however, succumbed to therapeutical side effects. Four of the seven patients with hepatocellular carcinoma were alive after a mean follow-up of 6.4 years (2-15 years).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01274228
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 19
    Electronic Resource
    Electronic Resource
    Massenspektren von Dialkylaminostibanen (1985)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 520 (1985), S. 160-166 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Mass Spectra of Dialkylaminostibanes.The dialkylaminostibanes Cl2SbNMe2 (1), ClSb(NMe2)2 (2), Sb(NMe2)3 (3), Sb(NEt2)3 (4), and ClSbOMeNMe2 (5) were examined by mass spectrometry. The mass spectra were discussed and mechanisms and pathes of fragmentation proposed.
    Notes: Die Dilkylaminostibane Cl2SbNMe2 (1), ClSb(NMe2)2 (2), Sb(NMe2)3 (3), Sb(NEt2)3 (4), und ClSbOMeNMe2 (5) werden massenspektrometrisch untersucht. Die Massenspektren werden diskutiert und Fragmentierungswege sowie -mechanismen vorgeschlagen.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19855200119
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 20
    Electronic Resource
    Electronic Resource
    N,N′-substituierte Dimethylbenzamidine C6H5C(NCH3)2ElCl4 (El = P, As, Sb) Strukturen und SpektrenProfessor Josef Goubeau zum 85. Geburtstage am 31. März 1986 gewidmet (1986)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 533 (1986), S. 55-64 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: N, N′ substituted Dimethylbenzamidines C6H5C(NCH3)2ElCl4(El = P, As, Sb). Structures and SpectraThe crystal and molecular structure of C6H5C(NCH3)2ElCl4 (El = P (1), As (2), Sb (3)) are determined by X-ray method. The fine differences in the structures are analysed. The 1H, 31P, and 13C NMR data are communicated. 1, 2, and 3 are examined by mass spectrometry. The different intensities of the fragments are discussed and fragmentation mechanisms are proposed.
    Notes: Die Kristall- und Molekülstruktur von C6H5C(CNH3)2ElCl4 (El = P (1), As (2), Sb (3)) wird röntgenstrukturanalytisch ermittelt. Die Struktureigenheiten werden diskutiert. Die 1H-, 31P- und 13C-Kernresonanzdaten werden mitgeteilt. Von 1 - 3 wurden Massenspektren angefertigt. Die unterschiedliche Häufigkeit der Bruchstücke wird diskutiert und für einige Ionen werden Bildungswege vorgeschlagen.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19865330208
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...