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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Archives of dermatological research 271 (1981), S. 401-405 
    ISSN: 1432-069X
    Keywords: Psoriasis ; Dialysis ; Solutes in middle molecular weight range ; Psoriasis ; Dialyse ; mittlere Moleküle
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Bei einem Patienten, der mit der peritonealen Dialyse behandelt wurde, heilten die psoriatischen Herde völlig ab. Bei zwei weiteren Patienten waren die Resultate nicht befriedigend. Bei den behandelten und den drei nicht behandelten Patienten war die celluläre Immunität augenscheinlich unterdrückt. Dieses Phänomen ist mit den immunologischen Veränderungen bei Personen mit einer Urämie zu vergleichen. Organische Verbindungen von mittlerem Molekulargewicht, wozu auch die Gruppe der urämischen Toxine gehört, unterdrücken die celluläre Immunität. Deshalb wurden diese Verbindungen bei Psoriatikern untersucht. Der Spiegel der SMMWR war vor jeder Dialyse tiefer als danach, obwohl deren Konzentration während der Dialysebehandlung leicht anstieg. Dies läßt vermuten, daß diese SMMWR-Substanzen in der Epidermis fixiert sind oder im Bereiche der Capillaren vorliegen und dementsprechend während der Dialyse von diesen Orten freigesetzt werden. Die Peritonealdialyse scheint mehr eine wirksamere Behandlungsmethode der Psoriasis zu sein als die Hämodialyse. SMMWR-Substanzen können eine wichtige Rolle in dem Pathomechanismus der multifaktoriellen Erkrankung darstellen.
    Notes: Summary In one patient treated by peritoneal dialysis for psoriasis the skin lesions cleared completely. In two persons hemodialysis gave unsatisfactory results. In treated and another three untreated patients cellular immunity was evidently suppressed. This phenomenon is similar to the immunologic changes in persons with uremia. Solutes in middle molecular weight range (SMMWR) suppress cellular immunity. These compounds were therefore investigated in psoriatics. The level of SMMWR was lower before than after each dialysis, although their concentration increased slightly during the dialytic treatment. This suggests that solutes in middle molecular weight are fixed in the epidermis and/or in the walls of the skin capillaries and that dialysis liberates them from these places. Peritoneal dialysis seems to be a more effective method of treating psoriasis than hemodialysis. Solutes in middle molecular weight range might play an important role in the pathomechanisms of this multifactorial disease.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-1246
    Keywords: Phenol ; Chlorophenols ; Urine ; Excretion ; Exposed workers
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary An analytical method is described which has suitable sensitivity and specificity for analyzing urine samples from workers who are exposed to chlorinated phenols. The phenolic compounds are separated by steam distillation and then extracted into isopropyl ether. Without derivatizing the material, it is analyzed by gas chromatography on a 180 cm x 2 mm i.d. glass column containing 60/80 mesh Tenax GC (ENKA NV, The Netherlands) using flame ionization detectors. The detection limits in urine range from 0.1 mg/l urine for phenol to 1 mg/l for the di- and trichlorophenols. The coefficient of variation for each component is less than 4%. The naturally occurring metabolites cresol and 4-heptanone are also isolated and can be quantified by this method.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 38 (1982), S. 1075-1076 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The effect of age on hepatocyte mensuration and mitotic activity 48 h after partial hepatectomy was investigated in rats. Both age and partial hepatectomy had significant effects upon hepatocyte counts per microscopic field. The number of hepatocytes per microscopic field declined with age in the control groups of different advancing ages and in the experimental groups of advancing ages. There was essentially no mitotic activity in the livers of the control groups. However, mitotic counts were greatly increased in livers from those animals that were partially hepatectomized; the increase in mitotic activity in the 13-month-old animals was double over that observed in both the very young and the very old.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 287 (1980), S. 313-314 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Conventional zone plates work by blocking out alternate zones. Constructive interference of the waves diffracted from the remaining zones occurs at specific points which are in an image relationship to their original source. Lord Rayleigh7 pointed out that phase reversing, rather than absorbing ...
    Type of Medium: Electronic Resource
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  • 5
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    Unknown
    Baltimore, Md. : Periodicals Archive Online (PAO)
    Prooftexts. 2:2 (1982:May) 123 
    ISSN: 0272-9601
    Topics: Linguistics and Literary Studies
    Notes: Jewish Writing in the New World
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Pediatric radiology 10 (1980), S. 51-53 
    ISSN: 1432-1998
    Keywords: Intrapericardial teratoma ; Pericardial effusion ; Echocardiography ; Angiocardiography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Intrapericardial teratoma in the newborn is a rare potentially fatal neoplasm. Pre-operative diagnosis depends upon recognition of specific radiographic and echocardiographic findings in a newborn with a large cardiothymic image and pericardial effusion. Surgical intervention is usually curative whereas undiagnosed intrapericardial teratoma is often fatal.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1436-5073
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Rasche Methoden zur Bestimmung von freiem NPA oder freiem und gebundenem NPA in Blutplasma wurden beschrieben. Nach Eiweißfällung mittels Methanol erhält man relativ gute Absolutwerte nach einfacher Aufarbeitung ohne Derivatisierung. Für eine Einzelbestimmung werden nur 0,25 ml Plasma benötigt. Die Erfassungsgrenze liegt bei 0,4μg NPA/ml Plasma. Das Verfahren ist hinreichend genau.
    Notes: Summary Rapid HPLC methods are described for the determinations of either free N-n-propylnorapomorphine (NPA) or the free and conjugated NPA in blood plasma. The methods employ a methanol protein-precipitation step that produces relatively good absolute recoveries, while permitting a simple work-up procedure without derivatization. Only 0.25 ml of plasma is required for a single determination at a sensitivity limit of 0.4μg NPA/ml plasma. Satisfactory accuracy and precision are achieved with the proposed assay.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Radiophysics and quantum electronics 26 (1983), S. 200-203 
    ISSN: 1573-9120
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 304 (1980), S. 270-270 
    ISSN: 1618-2650
    Keywords: Kohlenstoffbindungen ; Abhängigk. von CC-Bindungslängen von Hybrid. u. Konjug.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Chemistry Edition 21 (1983), S. 2845-2861 
    ISSN: 0360-6376
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The morphology of polybutylacrylate-polystyrene (PBA-PS) core-shell latex particles prepared by seeded emulsion polymerization was investigated as a function of the addition method of styrene (St). The thin layer chromatography/flame ionization detector (TLC-FID) technique was used to characterize the morphology of the core-shell latexes. It was found that grafting PS to the PBA core occurs during seeded emulsion polymerization. The percentage of grafting depended on the method of addition of St, being greatest for the batch reaction, less for the preswollen batch reaction, and least for the semibatch reaction. Upon aging the PBA core-polymer migrated out of the latex particles with a low degree of grafting to form dumbellshaped particles, whereas the PBA-PS core-shell particles with a high degree of grafting remained spherical because of the emulsifying ability of graft copolymer.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
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