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  • Analytical Chemistry and Spectroscopy  (3)
  • far-infrared  (3)
  • Arterial compliance  (2)
  • Equivalent linearization
  • Frühcarcinom des Magens
Materialart
Erscheinungszeitraum
Schlagwörter
  • 1
    Digitale Medien
    Digitale Medien
    Springer
    Journal of cancer research and clinical oncology 103 (1982), S. 187-202 
    ISSN: 1432-1335
    Schlagwort(e): Gastric endocrine cells ; Endocrine cell carcinoma ; Early gastric cancer ; Scirrhous carcinoma ; Immunohistochemistry ; Schlüsselwörter ; Gastrische Endokrinzellen ; Endokrine Carcinome ; Frühcarcinom des Magens ; Scirrhöses Carcinom ; Immunhistochemie
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Beschreibung / Inhaltsverzeichnis: Zusammenfassung 18 Argyrophilzellencarcinome aus insgesamt 101 Frühcarcinomen des Magens wurden lichtmikroskopisch, elektronenmikroskopisch sowie immunhistochemisch mit Antiseren gegen Polypeptide, CEA, Lysozyme und hCG untersucht. 7 dieser Tumoren enthielten Gastrin und 2 unter ihnen außerdem Somatostatin. In allen 18 Tumoren wurde CEA nachgewiesen, 7 von diesen 18 Tumoren zeigten Lysozyme, darunter 5 auch noch Gastrin. In 4 Tumoren wurde hCG beobachtet, und in 2 aus dieser Reihe von 4 fand sich gleichzeitig Gastrin, CEA, Mucin sowie Lysozyme. Argentaffine Zellen wurden in 7 von 18 Tumoren beobachtet. Drei von 7 Gastrin enthaltende Tumoren hatten mehr oder weniger argentaffine Zellen. Elektronmikroskopisch wurden unterschiedliche Sekretgranula beobachtet und 9 von 18 Tumoren waren D1 oder P Zellen ähnlich. Makroskopisch entsprach die Mehrzahl der Tumoren dem IIc oder IIc+III Typ. Histologisch waren von diesen 18 Tumoren 6 gut differenzierte und 12 wenig differenzierte Adenocarcinome, einschließlich Siegelring-zellencarcinomen. Sie waren öfters im Fundusbereich jüngerer Frauen lokalisiert. Unter Heranziehung unserer schon publizierten Untersuchungsbefunde wird vermutet, daß IIc-Typ Argyrophilzellencarcinome mit dem histologischen Bild des wenig differenzierten Adenocarcinoms dem scirrhösen Carcinom zugeordnet werden kann.
    Notizen: Summary Eighteen argyrophil cell carcinomas in 101 early gastric carcinomas were examined histologically, ultrastructurally, and immunohistochemically for polypeptides, carcinoembryonic antigen (CEA), lysozyme, and human chorionic gonadotrophin (hCG). Seven of these 18 tumors had gastrin, and two of seven tumors also contained somatostatin. In all of these 18 tumors CEA were demonstrated. Seven had lysozyme and five of seven tumors also contained gastrin; hCG were present in four of 18 tumors and two of four tumors had gastrin, CEA, mucin, and lysozyme simultaneously. Argentaffin cells were found in seven of 18 tumors. Of the above seven tumors containing gastrin, three had argentaffin cells. Ultrastructurally, several types of secretory granules were noted and tumor cells resembling D1-or P cells were present in nine of the 18 tumors. Macroscopically, many of the tumors showed IIc or IIc+III type. Histologically, the 18 tumors consisted of six well differentiated adenocarcinomas and 12 poorly differentiated adenocarcinomas including signet-ring cell carcinoma. These 12 tumors frequently developed in the stomach of young females. In view of our previous investigations, it was suggested that the IIc-type argyrophil cell carcinoma histologically showing poorly differentiated adenocarcinoma may be related to scirrhous carcinoma of the stomach.
    Materialart: Digitale Medien
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  • 2
    Digitale Medien
    Digitale Medien
    Springer
    Journal of statistical physics 37 (1984), S. 653-671 
    ISSN: 1572-9613
    Schlagwort(e): Equivalent linearization ; nonlinear stochastic partial differential equation ; Kullback-Leibler entropy ; Ginzburg-Landau model ; relaxation from unstable state
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract We present a linearization procedure of a stochastic partial differential equation for a vector field (X i (t,x)) (t∈[0, ∞),x∈R d ,i=l,...,n): ∂ t X i (t,x)=b i (X(t, x)) +D, ΔX i (t, x) + σ i f i (t, x). HereΔ is the Laplace-Beltrami operator inR d , and (f i (t,x)) is a Gaussian random field with 〈f i (t,x)f j (t′,x′)〉 = δ ij δ(t − t′)δ(x − x′). The procedure is a natural extension of the equivalent linearization for stochastic ordinary differential equations. The linearized solution is optimal in the sense that the distance between true and approximate solutions is minimal when it is measured by the Kullback-Leibler entropy. The procedure is applied to the scalar-valued Ginzburg-Landau model in R1 withb 1(z) =μz - vz 3. Stationary values of mean, variance, and correlation length are calculated. They almost agree with exact ones ifμ ≲ 1.24 (ν 2θ 1 4 /D 1 1/3:=μ c . Whenμ⩾μ c , there appear quasistationary states fluctuating around one of the bottoms of the potentialU(z) = ∫b 1(z)dz. The second moment at the quasistationary states almost agrees with the exact one. Transient phenomena are also discussed. Half-width at half-maximum of a structure function decays liket −1/2 for small t. The diffusion term∂ x 2 X accelerates the relaxation from the neighborhood of an unstable initial stateX(0,x) ∼ 0.
    Materialart: Digitale Medien
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  • 3
    Digitale Medien
    Digitale Medien
    Springer
    International journal of infrared and millimeter waves 4 (1983), S. 549-559 
    ISSN: 1572-9559
    Schlagwort(e): interferometer ; polarimeter ; water-vapor laser ; far-infrared ; plasma diagnostics ; compact toroid
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract A high-power CW 27.972 μm water-vapor laser has been developed for interferometric and polarimetric measurements of plasmas. The maximum output power and the power density in the cavity of the laser with 2.0 cm bore and 220 cm length reach 85 mW and 109 μW/cm3, respectively. An interferometer using this laser is constructed and its performance is examined as a study on polarimetric method of magnetic field measurement. Preliminary interferometric experiments are also carried out on a compact toroidal plasma with field-reversal configuration.
    Materialart: Digitale Medien
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  • 4
    Digitale Medien
    Digitale Medien
    Springer
    International journal of infrared and millimeter waves 2 (1981), S. 1199-1208 
    ISSN: 1572-9559
    Schlagwort(e): water vapor laser ; plasma diagnostics ; interferometer ; waveguide laser ; far-infrared
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract A high-power CW 27.972 μm water vapor laser has been constructed in order to use as a light source of an interferometer for plasma diagnostics. The laser consists of 220 cm length and 2.0 cm small bore Pyrex glass discharge tube, semi-confocal resonator and Michelson coupler. From the measurement of cavity detuning curves, it is found that two waveguide modes, EH11 and EH21 oscillate. The increase of the output power is found to become more than seven times larger by adding He(50%)−H2(50%) mixed gas. Under the optimum condition, the maximum output power of 65 mW or the output power per unit cavity volume of 83 μW/cm3 is obtained.
    Materialart: Digitale Medien
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  • 5
    Digitale Medien
    Digitale Medien
    Springer
    International journal of infrared and millimeter waves 5 (1984), S. 1039-1052 
    ISSN: 1572-9559
    Schlagwort(e): H2O laser ; Faraday rotation ; polarimetry ; far-infrared ; plasma diagnostics ; compact toroid
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract A fast response frequency-modulated interferometric polarimeter was designed and constructed with a single 28 μm H2O laser for high density plasma diagnostics. This newly developed modulation system employs an electro-magnetically driven movable mirror to achieve the modulation frequency beyound 1 MHz for about 100 μs duration. The movable mirror performance is studied experimentally in detail. The determination of the Faraday rotation angle is based on the zero-crossing method for the observed beat signals produced by two kinds of rotating plane-polarized waves. The feasibility of the polarimeter constructed was verified in experiments of a field-reversed thetapinch plasma.
    Materialart: Digitale Medien
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  • 6
    Digitale Medien
    Digitale Medien
    Springer
    Medical & biological engineering & computing 26 (1988), S. 641-646 
    ISSN: 1741-0444
    Schlagwort(e): Admittance plethysmography ; Arterial compliance ; Human limb ; Noninvasive measurement ; Volume elastic modulus ; Volume oscillometric method
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Chemie und Pharmazie , Medizin
    Notizen: Abstract Arterial elasticity expressed by such indices as volume elastic modulus Ev and compliance Ca were noninvasively measured in various human limb segments; the upper arms, forearms, fingers, thighs, calves and toes. These indices are defined, respectively, as $$E_v = \Delta P/(\Delta V/\bar V_a )$$ and Ca=ΔV/ΔP, where ΔP is pulse pressure, $$\bar V_a $$ mean arterial volume and ΔV its pulsatile variation. ΔP was calculated from systolic Pas and mean Pam arterial pressures determined by volume oscillometric sphygmomanometry using the following equation: $$\Delta P = 3(P_{as} - P_{am} )/2\bar V_a $$ and the ΔV were detected by electrical admittance plethysmography at various transmural pressure Pt levels controlled by a compression cuff. The values obtained in these limb segments were compared with each other at Pt levels 0,30 and 60 mm Hg and the differences between them were discussed.
    Materialart: Digitale Medien
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  • 7
    Digitale Medien
    Digitale Medien
    Springer
    Medical & biological engineering & computing 23 (1985), S. 43-47 
    ISSN: 1741-0444
    Schlagwort(e): Admittance plethysmography ; Arterial compliance ; Arterial volume ; Vascular unloading technique ; Volume elastic modulus
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Chemie und Pharmazie , Medizin
    Notizen: Abstract Static and dynamic (beat-to-beat) arterial viscoelastic properties were measured noninvasively in human fingers and forearms. The volume change and pressure change were detected simultaneously by admittance plethysmography and by sphygmomanometry using the vascular unloading technique in the index and middle finger, or vice versa. These simultaneous measurements were also made on the forearms of one side and the fingers of the other side. The arterial viscoelastic properties in these segments could be successfully determined at different transmural pressure levels from 0 mm Hg to around the mean arterial pressure.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 8
    Digitale Medien
    Digitale Medien
    New York, NY : Wiley-Blackwell
    Rapid Communications in Mass Spectrometry 5 (1991), S. 437-440 
    ISSN: 0951-4198
    Schlagwort(e): Chemistry ; Analytical Chemistry and Spectroscopy
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Physik
    Notizen: The mass spectrum of mercury/cesium complex clusters (Hg)nCs+ is observed up to m/z=118 000 (n = 590). Singly charged clusters are produced by Cs+ ion bombardment. The presence of an alkali metal in the ionization process yields cluster ions of the form (Hg)nX+. The clusters are analysed using the grand-scale mass spectrometer, GEMMY, at Osaka University. The mass resolution of the instrument is high enough to resolve each cluster up to m/z=70 000. From the pattern of cluster distribution, the structrues of the large clusters can be studied. The number of Hg groups in metastable decay increases with the cluster size n. The ion intensities of the mercury/cesium clusters are much stronger than that from CsI (used for mass calibration). The mass spectrum of the clusters can therefore easily be utilized for direct mass calibration up to m/z=70 000.
    Zusätzliches Material: 4 Ill.
    Materialart: Digitale Medien
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  • 9
    ISSN: 0951-4198
    Schlagwort(e): Chemistry ; Analytical Chemistry and Spectroscopy
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Physik
    Zusätzliches Material: 3 Ill.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 10
    Digitale Medien
    Digitale Medien
    New York, NY : Wiley-Blackwell
    Rapid Communications in Mass Spectrometry 4 (1990), S. 16-18 
    ISSN: 0951-4198
    Schlagwort(e): Chemistry ; Analytical Chemistry and Spectroscopy
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Physik
    Notizen: Two types of magnesium oxide clusters, (MgO)n+ and (MgO)nMg+ have been obtained by the bombardment of magnesium with a mixture of xenon and oxygen ions. Enhanced ion intensity in the cluster mass spectra was observed at certain n values. The correlation between the geometrical structures of the clusters and their abundances is discussed.
    Zusätzliches Material: 2 Ill.
    Materialart: Digitale Medien
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