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  • 1
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Tetrahedron Letters 31 (1990), S. 1559-1562 
    ISSN: 0040-4039
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Child's nervous system 16 (2000), S. 607-610 
    ISSN: 1433-0350
    Keywords: Keywords Spinal clear cell meningioma ; Infancy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  Clear cell meningioma, about 20 cases of which have been reported in the literature, is a morphological variant of meningioma. The authors report a case of spinal clear cell meningioma that occurred in a child. A 14-month-old girl showed gradually progressive paraparesis 1 month after she started to walk. Magnetic resonance image showed an intradural extramedullary mass compressing the conus medullaris and cauda equina. Complete excision of the tumor was done, and the patient gradually recovered from motor weakness and neurogenic bladder. Histological examinations along with immunohistochemical and ultrastructural investigations allowed a diagnosis of clear cell meningioma. During the follow-up period, a recurrent mass lesion was detected on the 8-month follow-up MR image in the same region. Because clear cell meningioma might be biologically aggressive, postoperative adjuvant therapy and close follow-up investigation should be considered.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 60 (1982), S. 991-996 
    ISSN: 1432-1440
    Keywords: Histamine ; Obstructive air way disease (OAD) ; Oversensitive bronchial system ; Histamine receptors ; Histamin ; Bronchokonstriktion ; überempfindliches Bronchialsystem ; Histamin-Rezeptoren
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Es besteht eine statistisch strenge Korrelation zwischen dem Anstieg der Histaminkonzentration im arteriellen Plasma und dem Anstieg der Strömungswiderstände in den Atemwegen bei experimentell verursachter allergischer Atemwegsobstruktion. Das Histamin wird an sensorischen Rezeptoren im Sinne einer Reflexbronchokonstriktion wirksam. Histamin verursacht in geringen Konzentrationen im Bronchialsystem eine unspezifische Empfindlichkeitssteigerung. Diese kann auch durch Allergene in sehr geringer Konzentration hervorgerufen werden. Patienten mit chronisch obstruktiver Bronchitis haben hohe Histamin-Konzentrationen im Sputum. Durch Waschungen der inneren Oberfläche des Bronchialbaums lassen sich hohe Histamin-Konzentrationen in der Spülflüssigkeit nachweisen. Die Gabe gleicher Histamin-Konzentrationen intravenös verursacht Bronchokonstriktion. Es ist anzunehmen, daß Histamin-Rezeptoren nahe der Oberfläche der Bronchialschleimhaut vorhanden sind. Ebenso müssen in der Oberfläche oder auf der Oberfläche der Bronchialschleimhaut Mastzellen vorhanden sein.
    Notes: Summary There is a statistically strong correlation between the increase of the histamine concentration in the arterial plasma and the increase of airway resistance. The histamine causes a reflex bronchoconstriction on the sensory receptors. Histamine in low concentration increases the unspecific reaction in the bronchial system. This can also be achieved using low concentrations of allergen aerosols. Patients with chronic obstructive bronchitis show high concentrations of histamine in the sputum. The bronchoconstrictive potency of this histamine was found to be not always active. Higher concentrations of histamine can be liberated by washing the inner surface of the bronchial tree. Histamine injected in similar concentrations as that measured in the sputum causes bronchoconstriction. There should be high concentrations of histamine receptors as well as mast cells near the surface of the mucosa of the bronchial wall. There are many questions remaining open, which will be discussed.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Microsystem technologies 3 (1997), S. 191-198 
    ISSN: 1432-1858
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Technology
    Notes: Abstract  This paper deals with the integration of different types of standardised and available fieldbus and sensor/actuator bus systems into control systems and applications. The concept for integration and the first steps of realisation considering the bus systems PROFIBUS, CAN and INTERBUS are presented here. This includes a simple but unified application programming interface (API) on all underlying interfaces including standardised fieldbus systems and other improvements for the adaptation to different fieldbus systems. A main feature of these improvements is that there is no recompilation necessary in case of exchanging field bus systems, making the integration of different fieldbus systems much easier. The remaining work for the system integrator is to modify a few configuration tables which are written in ASCII text and easy to handle. The presented concept is realised using VME bus systems with Motorola CPU board, real time operating system OS-9 and hard- and software modules for the interfaces to PROFIBUS, CAN and INTERBUS.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 87 (1987), S. 6767-6769 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 57 (1986), S. 1999-1999 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: Recent results from tokamak fusion test reactor (TFTR)1 pellet experiments have extended previous results to a larger volume and longer time scales. In this paper, the detailed study of electron density profile response following pellet injection is discussed. In particular, hollow density profiles with relatively long relaxation times (10–100 ms) from inverted gradients are obtained by injection of 2.67-mm-diam pellets, which penetrate to r(approximately-equal-to)a/2. Strongly peaked profiles [ne(0)/n¯e∼3] and central electron density ∼3.9×1020 m−3 are obtained by injection of three pellets, which penetrate to or beyond the magnetic axis. In both cases, the pellet mass is well accounted for by the measured density perturbation. This work was supported by U.S. DOE Contract No. DE-AC02-CHO-3073.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 57 (1986), S. 1999-1999 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: Plasmas have been formed in the tokamak fusion test reactor (TFTR) which separate completely from the limiter and are called detached plasmas. The physical evidence for the separation from the limiter is that all the ohmic input power is radiated away at the plasma boundary which can be 10→30 cm inside the limiter. The 10-chord multichannel MIRI interferometer system has been used to diagnose this region and follows the formation of the detached state through a MARFE. MIRI indicates that a plasma ∼0.5→1×1013 cm−3 occurs in the region between the luminous boundary and the limiter. This work was supported by U.S. DOE Contract No. DE-AC02-76-CHO-3073.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 57 (1986), S. 1994-1996 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: Recent results of simultaneous measurements of line electron density and poloidal field-induced Faraday rotation on the multichannel far infrared (FIR) interferometer/polarimeter on tokamak fusion test reactor (TFTR) are presented. The procedures and results of the calibration are described in detail. The effects of various errors in the measurement, as well as the problem of cross-coupling laser beams, are studied.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 56 (1985), S. 922-924 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A successful proof-of-principle experimental determination of ion temperature in a tokamak plasma via cw far-infrared (FIR) collective laser scattering from ion Bernstein waves is reported. The Bernstein waves are excited via mode conversion of an externally launched fast Alfven wave at the second-harmonic cyclotron layer. A fit of the experimentally determined ion Bernstein wave dispersion to the temperature-dependent theoretical dispersion yields the local ion temperature. Partial ion temperature profiles (chord averaged) have been obtained with temperature values consistent with charge exchange measurements. Single-shot measurements should be available in the near future with the use of the multichannel scattering systems and high-power laser sources developed at UCLA.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 56 (1985), S. 1055-1056 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The numerous applications of cw collective Thomson scattering in fusion plasmas are greatly enhanced by the addition of a multichannel capability. This permits the determination of the dispersive properties (ω vs k) of waves on a single tokamak discharge. This paper describes the development, calibration, and application of such systems in the far-infrared spectral region. The measurement of the wave dispersion of externally excited ion Bernstein waves leads to the determination of ion temperature in a tokamak plasma. In addition, the study of naturally occurring microturbulence has produced a series of unique observations which has both motivated theoretical effort and clarified the role of density fluctuations in anomalous transport.
    Type of Medium: Electronic Resource
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