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  • 1
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Physics of Fluids 30 (1987), S. 998-1004 
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A numerical method based on solution of the Orr–Sommerfeld equation is formulated to demonstrate the suppression of a two-dimensional, Tollmien–Schlichting-type, time-harmonic instability wave in a developing channel flow by a downstream secondary wave created through alternating suction and blowing at the surface. An analytical expression is derived providing the amplitude and a second parameter (the width or the phase) of the downstream surface-velocity distribution required to create a wave that will suppress the downstream continuation of the original disturbance.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Geostandards and geoanalytical research 12 (1988), S. 0 
    ISSN: 1751-908X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: Six roches standards de I'USGS : GXR-1 à GXR-6 ont été analysées par activation neutronique instrumentale (INAA) pour le dosage de 17 éléments traces et par fluorescence X (XRF) pour les autres éléments difficiles à doser par activation neutronique. Les travaux précédemment publiés par Gladney et al. ont été pris comme référence en particulier les valeurs recommandées (R.V.) qui sont généralement en bon accord avec nos résultats. Quelques remarques et corrections sont proposées pour expliquer certaines disparités.Six United States Geological Survey's (USGS) Geochemical Exploration References Samples (GXR) have been analyzed by instrumental neutron activation analysis (INAA) for the determination of seventeen trace elements and by X-ray fluorescence spectrometry (XRFS) for other trace elements difficult to determine by INAA. Our results compare favourably with the values recommended by E.S. Gladney et al. Some suggestions and corrections are proposed to explain some discrepancies.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-1440
    Keywords: Immune neutropenia ; 7S-Immunoglobulin therapy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In a 61-year-old woman recurrent bacterial infections were caused by immune neutropenia which was resistant to high-dose cortisone and plasmapheresis. However, high-dose intravenous 7S-immunoglobulin therapy (30 g for 6 days) induced a long-term remission for 35 months. This treatment modality is safe and should be used as a first-line agent.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Naturwissenschaften 74 (1987), S. 491-492 
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Naturwissenschaften 75 (1988), S. 308-309 
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Naturwissenschaften 74 (1987), S. 492-493 
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1432-1181
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Description / Table of Contents: Zusammenfassung Diese Untersuchung wurde durchgeführt um experimentell den Einfluß des thermischen Widerstandes der Rohrwand und des heizenden Mediums (innen) auf die kritische Wärmestromdichte über einen horizontalen Zylinder großen Durchmessers, der quer angeströmt wird, zu bestimmen. Die Anströmrichtung wurde senkrecht zur Erdgravitation gewählt. Die variierten Parameter waren das Rohrmaterial, die Rohrdicke, der Durchsatz des heizenden Mediums, die ungestörte Anströmgeschwindigkeit und Unterkühlung des Kühlmittels. Die experimentellen Ergebnisse wurden diskutiert und eine qualitative Erklärung für die experimentellen Befunde wurde gegeben.
    Notes: Abstract This investigation has been carried out to determine experimentally the influence of the thermal resistances of the tube wall and the heating medium (inside flow) on the critical heat flux over a cylinder of large diameter placed horizontally in a cross flow. The cross flow was normal to earth gravity. The parameters varied were the tube material, tube thickness, flow rate of heating medium, undisturbed cross velocity of the coolant and coolant subcooling. The experimental results are discussed and a qualitative explanation for the experimental findings is given.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1432-1939
    Keywords: Lepidoptera ; Salicaceae ; Herbivory ; Resource allocation ; Chemical defense
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The cottonwood tree, Populus deltoides, continues to produce leaves late into the growing season, exposing midseason herbivores to leaves of a wide range of maturity. Gypsy moth larvae preferred and grew best on the oldest cottonwood leaves and suffered higher mortality and 85% less growth when fed young, expanding leaves. Concentration of phenolics in the youngest leaves was 3 times that in the oldest leaves and was negatively correlated with caterpillar growth rate. The active phenolics were not identified; tannin was present but its concentration changed more with season than leaf age.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1432-2013
    Keywords: Rabbit gallbladder ; Cl−/HCO 3 − , Na+/H+ uncoupling ; Bicarbonate transport ; Intracellular Na+ activity ; SITS ; Amiloride ; SCN
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The transapical Cl− influx and transepithelial Na+ transport were measured in rabbit gallbladder. Only 11.7% of the transported Na+ was found to be accompanied by HCO 3 − . 10−4 M SITS eliminated the HCO 3 − dependent fraction of Cl− influx (50%) but did not significantly alter intracellular Na+ activity and Na+ transport. Exposure to HCO3-free salines or to 10−4 M acetazolamide about halved Cl− influx and Na+ transport. 25 mM SCN− reduced Cl− influx to zero, decreased intracellular Na+ activity, but only halved Na+ transport which under these conditions was abolished only in the absence of HCO 3 − . Exposure to a Cl−-free saline produced effects similar to those caused by SCN−. These resuits suggest that when Cl−/HCO 3 − exchange is inhibited at the apical membrane, Na+/H+ exchange and transepithelial Na+ transfer are unmodified if HCO 3 − is available for transport. The permanent uncoupling of the exchangers and the elevated transepithelial transport of Na+ are not due to an increased activity of the parallel Na+−Cl− cotransport but to a redirection of HCO 3 − flux toward the basolateral side.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Langenbeck's archives of surgery 371 (1987), S. 85-101 
    ISSN: 1435-2451
    Keywords: Bronchial carcinoma ; Bronchoplastic procedures ; Angioplastic procedures ; Surgical techniques ; Prognosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Bronchoplastische und angioplastische Operationen beim Bronchialcarcinom stellen eine parenchymsparende Alternative zur Pneumonektomie dar. Diese Eingriffe sind vor allem bei Patienten mit einer eingeschränkten Lungenfunktion und zentralem Sitz des Neoplasmas indiziert. In einer retrospektiven Studie wurden insgesamt 248 broncho- und angioplastische Operationen aus den Jahren 1973–1983 ausgewertet. Stichtag der Überlebenszeitanalysen bildete der 1. Januar 1986. Die Mindestbeobachtungsdauer des Spätschicksals auch der erst 1983 operierten Patienten beträgt daher zwei Jahre. Für alle Patienten (n = 248) ergab sich eine 5-Jahres-Überlebensrate von 22% bei einer 30-Tage-Letalität von 13%. Die 5-Jahres-Überlebenszeit aller radikal operierten Bronchusmanschetten (Stadium I und II der TNM-Klassifikation,n = 44) beträgt 42% bei einer 30-Tage-Letalität von 7%. Bei allen bronchoplastischen Operationen in den Stadien I und II (n = 88) findet sich eine 5-Jahres-Überlebenszeit von 38% bei einer 30-Tage-Letalität von 14%. Verbessertes Nahtmaterial und Operationstechniken haben im Verlauf des Untersuchungszeitraums zu einer Senkung der Operationsletalität von 23% auf 8% geführt. Innerhalb der ersten 30 postoperativen Tage verursachten folgende Komplikationen einen letalen Ausgang: Hämoptoe (n = 5), Anastomoseninsuffizienz (n = 3), Rechtsherzversagen (n = 5), Lungenembolie (n = 4) und Sepsis (n = 1).
    Notes: Summary The various forms of bronchoplastic and angioplastic procedures are the best means of avoiding pneumonectomy. Essential indications are limited respiratory reserve and central site of a malignancy. In a retrospective study 248 broncho- and angioplastic operations carried out in the years 1973 to 1983 were analyzed. Reference date for the analysis of survival was January 1986. In consequence the minimum period of follow-up was two years. For all patients (n = 248) the 5-year-survival was 22% with a 30-day-lethality of 13%. The 5-year-survival of all bronchial sleeve resections operated radically (stage I and II of the TNM-classification) (n = 44) was 42% with a 30-day-lethality of 7%. The 5-year-survival of all bronchoplastic operations of stage I and II (n = 88) was 38% with a 30-day-lethality of 14%. Improved suture material and surgical techniques caused a reduction of operative lethality from 23% to 8% during the described period. In the first thirty postoperative days the following complications caused death: Hemoptysis (n = 5), insufficiency of the anastomosis (n = 3), right heart failure (n = 5), pulmonary embolism (n = 4) and sepsis (n = 1).
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