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  • 1
    Electronic Resource
    Electronic Resource
    Isospin mixing in the 4 + doublet of 54 Co (2003)
    Springer
    The European physical journal 20 (2003), S. 129-130 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract. The T = 1 admixture into the T = 0 member of a recently discovered $J^\pi = 4^{ + }$ isospin-doublet in 54Co is obtained from the measured electromagnetic E2/M1 multipole mixing ratio, $\delta = 0.12(4)$ of the $T = 0, 4^{ + } \rightarrow T = 0, 3^{ + }$ transition. Combining these data with shell model calculations for strong isovector M1 and isoscalar E2 electromagnetic matrix elements one obtains a value for the T = 1 admixture into the T = 0, 4 + state of $0.23_{-0.10}^{ + 0.29}\%$ . The corresponding mixing matrix element in the 4 + doublet is $V_{\rm mix} = 10$ keV.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1140/epja/i2002-10337-8
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  • 2
    Electronic Resource
    Electronic Resource
    Histochemische und elektronenmikroskopische Untersuchungen am Histiocytom (1980)
    Springer
    Archives of dermatological research 267 (1980), S. 47-60 
    Details
    ISSN: 1432-069X
    Keywords: Histiocytoma ; Fibroma ; Sclerosing angioma ; Histiocytom ; Fibrom ; Sklerosierendes Angiom
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Überprüft man in Histiocytomen mit Hilfe des Nachweises der alkalischen Phosphatase den Verlauf der Capillaren, so überrascht die große Zahl der Gefäße. Von einem Zentrum erstrecken sich diese durch das ganze Histiocytom, selbst die über dem Histiocytom unter der Epidermis gelegenen Capillaren sind gewuchert. Histochemische und elektronenmikroskopische Untersuchungen zeigen aber, daß die Mehrzahl der Tumorzellen keine Gefäßzellen sind, sondern Fibroblasten, Histiocyten und Mastzellen. Die jüngeren Fibroblasten gleichen Elementen, die man auch bei der Wundheilung findet und die man als C-Fibroblasten bezeichnet hat.
    Notes: Summary In histiocytomas the alkaline phosphatase technique reveals a surprising number of capillaries. The capillaries branch out from the center to the periphery of the histiocytoma and even the capillaries beneath the epidermis proliferate. The cellular elements outside the capillaries, however, are fibroblasts, histiocytes and mast cells, as is revealed by various histochemical and electron microscopical examinations. Histiocytomas of short duration differ from older histiocytomas in that the former contain fibroblasts similar to those found in healing wounds (C-fibroblasts).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00416921
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Computer study of kinetic parameter variation in depolymerization by digital thermogravimetric interpretation (1980)
    Springer
    Journal of thermal analysis and calorimetry 18 (1980), S. 227-233 
    Details
    ISSN: 1572-8943
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Eine Methode zur Bestimmung der Variation in den kinetischen ParameternA, E undn wird vorgeschlagen und am Beispiel des Abbaus von PVC mit teilweise durch Benzol substituiertem Chlor veranschaulicht. Wegen der Komplexität der Methode wurde ein Digitalkomputer eingesetzt.
    Abstract: Резюме Предложен метод опре деления изменений в кинетических параме трахА, Е ип. Метод показан на прим ере изучения деграда ции поливинилхлорида, в к отором хлор частично замещен бензольными кольцами. Была исполь зована цифровая вычислител ьная машина, вследствии сл ожности метода.
    Notes: Abstract A method for determining the variation of the kinetic parametersA, E andn is proposed, and is exemplified by a study of PVC degradation, with the chlorine partially substituted by benzene. Because of the complexity of the method, a digital computer has been used.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02055806
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    240. Der Wert der verstärkenden Sehnenplastik in der Versorgung frischer Knieseitenbandverletzungen (1980)
    Springer
    Langenbeck's archives of surgery 352 (1980), S. 561-562 
    Details
    ISSN: 1435-2451
    Keywords: Fresh rupture of collateral knee ligament ; Operative ; Suture solo ; Flapped tenoplasty ; Frischer Knieseitenbandriß ; Operativ ; Naht allein ; Verstärkende Sehnenplastik
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Im Zeitraum 1972–1975 wurden im Bergmannsheil Bochum 38 frische Kniehandverletzungen operativ versorgt. Es handelte sich um 22 isolierte und kombinierte und um 16 komplexe Bandverletzungen oder inkompl. Kniezerreißungen. Die 32 Innenbandrisse und 4 Außenbandrisse wurden nach zwei verschiedenen Methoden versorgt: 18mal durch Naht allein und 20mal durch die Kombination nahtverstärkende Sehnenplastik. Bei der Nachuntersuchung aller Fälle zeigte sich bei der Laxität und Beweglichkeit kein Vorteil der einen Methode gegenüber der anderen. Dagegen zeigte die v.Sp. vermehrte Schmerzhaftigkeit an der distalen Verankerung.
    Notes: Summary In “Bergmannsheil” Bochum between 1972 and 1975 38 acute ruptures of knee ligaments were operated on. We differentiated 22 isolated or combined and 16 complex injuries or subtotal ruptures of the knee. The 32 medial and 6 lateral collateral ligaments were treated by two different methods. 18 by suture only and 20 by suture combined with flapped tenoplasty. We followed up all cases. The examination of laxity and range of movement showed no advantage of either method. But patients with tenoplasty often complained of pain or discomfort at the insertion site of the plastic We cannot recommend this procedure generally in fresh injuries.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01292203
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Design of an electrical impedance tomography phantom using active elements (2000)
    Springer
    Medical & biological engineering & computing 38 (2000), S. 390-394 
    Details
    ISSN: 1741-0444
    Keywords: Electrical impedance tomography (EIT) ; Electrical phantom ; Impedance spectroscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract The architecture of a novel phantom for electrical impedance tomography (EIT) is proposed. The design employs active elements, which include multiplying digital to analogue converters (MDAC), so that the impedance distribution in the phantom may be varied dynamically using computer control. The phantom is designed to assist in the validation of an EIT system under test. A number of published layouts for passive phantoms are analysed, and the requirements for an active element are specified for the most applicable of these. The use of active elements throughout a phantom imposes significant costs because of the need for each active element to operate independently. This proposal limits the cost and complexity by employing active elements in a restricted region of the phantom. Currently available technology, principally due to the limited analogue bandwidth of the MDAC, precludes the construction of a fully capable phantom from active elements. However, a design is specified that would enable its future development to cover the frequency range from 10kHz to 1 MHz.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02345007
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  • 6
    Electronic Resource
    Electronic Resource
    Synthesis of a digitally controlled impedance element (2000)
    Springer
    Medical & biological engineering & computing 38 (2000), S. 395-400 
    Details
    ISSN: 1741-0444
    Keywords: Electrical impedance tomography (EIT) ; Synthesised impedance ; Multiplying DAC ; Impedance spectroscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract A practical design for the synthesis of a digitally controlled electrical impedance element is presented. The impedance element comprises a real impedance element in series with a voltage source whose magnitude is determined by the applied voltage multiplied by a factor k. The value of k is shown strongly to affect the circuit's performance. Results are presented which demonstrate the correspondence between circuit models and practical measurements. When negative values for k were employed the circuit element offered a controlled impedance range of 1:1000 and was stable to at least 1.5MHz, providing that low source impedance values were used. With a positive k, a restricted range of impedance values could be obtained and the value of source impedance was less critical, though the circuit's performance was acceptable only to about 100 kHz. Consideration is given to the specification of a multiplier that would permit the circuit's range of application to be extended to low megahertz frequencies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02345008
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  • 7
    Electronic Resource
    Electronic Resource
    Negative electrodes in rechargeable lithium ion batteries — Influence of graphite surface modification on the formation of the solid electrolyte interphase (2000)
    Springer
    Ionics 6 (2000), S. 172-179 
    Details
    ISSN: 1862-0760
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Rechargeable lithium ion cells operate at voltages of ∼4.5 V, which is far beyond the thermodynamic stability window of the battery electrolyte. Strong electrolyte reduction and corrosion of the negative electrode has to be anticipated, which leads to irreversible loss of electroactive material and electrolyte, and thus strongly deteriorates cell performance. To minimize these reactions, negative electrode and electrolyte components have to be combined bringing about the electrolyte reduction products to form an effectively protecting film at the anode/electrolyte interface. This film hinders further electrolyte decomposition reactions and acts as membrane for the lithium cations, i.e., behaves as asolidelectrolytei2nt erphase (SEI). The present paper gives a review of our recent work in the field of negative electrodes in lithium ion batteries. The effects of the graphite anode surface and graphite anode surface modification on the formation of the SEI are discussed in detail by using the example: modification with carbon dioxide.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02374063
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