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  • 1
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Electrical engineering 70 (1987), S. 237-253 
    ISSN: 1432-0487
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Description / Table of Contents: Contents For fast calculation of modal components in three-phase-systems nonrecursive filtering is normally used. By application of these method on the αβ-components instead of originalRST-values the necessary amount of arithmetic calculation can be cut by one third. — During transients the calculation can be accomplished within a quader of a period with a step-by-step adjustment of the filter order, if the time of change-of-state is known. — The behaviour of Fourier- and Kalman-Algorithms with and without using the aperiodic decay in the determination of the filter is shown by the transfer-functions in frequency domaine and with two examples in time-domaine.
    Notes: Übersicht Zur schnellen digitalen Ermittlung der Modalkomponenten in Drehstromsystemen werden in der Regel nichtrekursive Filterverfahren verwendet. Durch die Anwendung dieser Verfahren auf die αβ-Komponenten läßt sich im Vergleich zu denRST-Originalgrößen der Rechnaufwand etwa um ein Drittel reduzieren. Bei Übergangsvorgängen kann die Berechnung durch schrittweise aufbauende Filter bis auf eine Viertelperiode verkürzt werden, wenn sich der Zeitpunkt der plötzlichen Zustandsänderung feststellen läßt. — Das Verhalten von Fourier- und Kalmanalgorithmen mit und ohne Berücksichtigung des aperiodischen Gliedes im Filteransatz wird durch die Übertragungsfunktionen im Frequenzbereich und anhand zweier Beispiele im Zeitbereich vorgestellt.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-1440
    Keywords: Lung diseases ; Bone marrow transplantation ; Clinic ; Radiology ; Histology ; Immunology ; Lung function
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The case histories of 72 subsequently treated patients — 44 with acute leukemia, 10 with chronic myeloid leukemia, 16 with severe aplastic anemia and 2 with neuroblastoma — were analyzed after bone marrow transplantation (BMT) with respect to pulmonary diseases. Thirty-eight patients suffered from a total of 51 pulmonary complications, which led to death in 20. Of 13 patients, 3 died of bacterial pneumonia, all of them during granulocytopenia; 2 of 6 patients died of fungal pneumonia and 2 out of 3 of a mixed bacterialmycotic infection. Adult respiratory distress syndrome (ARDS) led to death in 2 patients. A granulocyte count under 500/µl correlated significantly (P〈0.002) with the fatal outcome of bacterial, fungal and ARDS pneumonia as well as with bronchitis. Viral pneumonia led to death in 8 of 9 patients; in each there was a significant correlation (P〈0.05) with graft-versus-host disease (GvHD). Patients with repeated episodes of pulmonary illness had significantly more chronic GvHD (P〈0.05); several of these patients displayed a reduction in helper T cells and an increase in suppressor T cells in the peripheral blood. The natural killer (NK) cells were reduced and the percentage of activated NK cell level lay between 6% and 69%. B-cells were absent or deficient. These findings explain in part the absence of specific antibody reactivity. Five of these patients also contracted GvHD-associated obstructive bronchiolitis, which did not respond to therapy. Pulmonary infiltrates of unknown origin (including idiopathic interstitial pneumonia) occurred in 8 of the patients (11.1%), with a fatal outcome in 3 patients. Significant changes (P〈0.05) in lung function after BMT appeared in the form of reduced vital capacity (VC) increased residual volume (RV) and an increase in RV expressed as the percentage of total lung capacity. Pulmonary diseases were the most common complication and cause of death in our patients after BMT.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1432-1440
    Keywords: Acquired immunodeficiency syndrome (AIDS) ; Lymphadenopathy-associated virus (LAV)/human T-lymphotropic virus type III (HTLV-III) ; Seroepidemiology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In 1984 10,281 sera were collected in the FRG and examined for antibodies to HTLV-III (LAV) with an enzyme-linked immunosorbent assay and confirmative tests. Of the German AIDS patients 81% have antibodies. Individuals belonging to AIDS risk groups, homosexuals, haemophiliacs and i.v. drug abusers, have antibody frequencies between 25%–72%. The detection of HTLV-III antibodies in blood donours indicates that the virus is being transmitted by blood transfusions.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1432-1211
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract DNA of unrelated persons as well as members of families that were totally or partially homozygous or completely heterozygous on the loci of the major histocompatibility class I genes has been isolated from peripheral blood lymphocytes and blot hybridized with the class I pseudogene pHLA 12.4 probe. The autoradiographic DNA patterns were discussed and compared with well-defined serological features. Positive associations with serologically typed alleles had been demonstrated for HLA-A1,11 ; -A2; -A3; -B7; -B14; -B35;-Bw41; and -Cw5.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Surgical and radiologic anatomy 10 (1988), S. 317-322 
    ISSN: 1279-8517
    Keywords: Pedicle ; Thoracolumbar ; Spine ; Morphology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Les caractéristiques géométriques de 380 pédicules vertébraux, compris entre T6 et L5, ont été analysées. Les différentes mesures ont été pratiquées directement sur les pièces anatomiques et sur leurs images radiographiques. Le diamètre horizontal et vertical du pédicule vertébral, son angle avec le plan transversal et sagittal, le diamètre transversal et ventrodorsal du canal rachidien et du corps vertébral ont été pris en considération. La longueur du pédicule seule, ainsi que sa longueur associée à celle du corps vertébral jusqu'au cortex ventral ont été mesurées le long de l'axe pédiculaire et sur une ligne parallèle à la ligne médiane. Les diamètres pédiculaires horizontaux et verticaux les plus étroits ont été mis en évidence aux niveaux compris entre T6 et T10. La corrélation entre la largueur pédiculaire et la dimension des vis utilisées en clinique est évidente. Sur le plan transversal, le pédicule forme un angle plus ou moins divergent à partir du corps vertébral, à l'exception de T12. Sur le plan sagittal le pédicule a une direction crâniale de T6 à L3 et légèrement caudale pour L5. La connaissance de la distance comprise entre la limite dorsale du pédicule et le cortex ventral du corps vertébral est très importante pour pouvoir insérer une vis avec sûreté. Cette distance est significativement plus grande le long de l'axe pédiculaire par rapport à une ligne parallèle à l'axe médian à tous les niveaux sauf pour T12.
    Notes: Summary The geometric properties of 380 vertebral pedicles, ranging from T6 to L5, were analysed. Measurement were made directly from the specimens as well as from roentgenograms. The parameters considered were the horizontal and vertical pedicle diameters, pedicle angles in the transverse and sagittal planes, and the transverse and anteroposterior widths of the spinal canal and vertebral body. In addition, the length of the pedicle and the length of the pedicle including the vertebral body to the anterior cortex were measured along the pedicle axis and in a line parallel to the midline of the vertebral body. The smallest horizontal and vertical pedicle diameters were found at vertebral levels from T6 to T10. The correlation between pedicle widths and screw dimensions is obvious. In the transverse plane, the pedicle angle diverged from the vertebral body at all levels, except at T12. In the sagittal plane, the pedicles were angled cephalad from T6 to L3 and slightly caudally at L5. Knowledge of the length of the pedicle to the anterior vertebral body cortex is very important for safe screw purchase. At all levels, with the exception of T12, this length was found to be significantly greater along the pedicle axis than along a line parallel to the midline of the vertebral body.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Surgical and radiologic anatomy 10 (1988), S. 18-21 
    ISSN: 1279-8517
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1600-065X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    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 57 (1986), S. 39-42 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A new type of instrument has been designed and built to make Fourier transform nuclear-magnetic-resonance (NMR) spectroscopic measurements at temperatures to at least 1200 °C, with a resolution of about 1 ppm. A sample is rapidly and repeatedly shuttled between the furnace and the radio frequency (rf) coil of the NMR probe (both located within a high field superconducting magnet), spending most of the time in the furnace. During each cycle, a series of rf pulses may be given and a single free-induction decay sampled. The rf coil is located outside of the furnace and is maintained at room temperature despite its close proximity to the sample. Electronic stability and coil "filling factor'' are thus both optimized. The sample temperature drops below that of the furnace when cycling begins, but rapidly approaches a nearly constant value with only small fluctuations. 99% BN has been successfully used as a sample container in experiments on 27Al, 29Si, and 23Na in molten silicates in the system Na2O–Al2O3–SiO2.
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1365-3083
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: In vivo activated T cells could be isolated from cerebrospinal fluid (CSF) of a patient suffering from chronic meningitis of unclear origin. Although the patient's skin reactivity to purified protein derivative (PPD) was negative, and peripheral T cells did not proliferate to this antigen in vitro, the majority of T cell clones from CSF specifically recognized PPD on either autologous or allogeneic HLA class II compatible macrophages. Remarkably, peripheral blood mononuclear cells potently suppressed the PPD-specific proliferate responses of healthy donors. The selective enrichment of oligoclonal IgG in the CSF but not in the patient's serum further indicated T and B cell responses lacking systemic feedback control. Analyses of a persisting immune stimulation in the CSF provide a potent diagnostic tool and may explain neurological complications as observed in a number of autoimmune diseases and chronic infections.
    Type of Medium: Electronic Resource
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