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  • 1
    ISSN: 1432-0517
    Keywords: Key words Interlaboratory comparisons ; Outliers ; Z-scores
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract  The influence of different evaluation techniques on the results of an interlaboratory comparison for the determination of nutrients in ground- and surface water was investigated. The outlier-test procedure was found to influence the interlaboratory standard deviations (SDs), but not the averages. It was shown that even small differences in the numbers of outliers detected can change the SD severely. Comparing the outlier-test procedures of Hampel, Grubbs and Graf-Henning, it was found that Hampel's test detected the most outliers, thus generally resulting in smaller SDs between interlaboratory comparisons. The Graf-Henning test detected the fewest outliers and its application resulted in the highest SDs of the three test procedures investigated. The comparison of different summarising indices, namely the rescaled sum of z-scores, average of absolute z-scores and average deviation showed no comparability. Possibilities to improve the comparability of interlaboratory comparisons and to minimise misunderstandings are suggested.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1600-0536
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Causes of allergic contact reactions of the eye region include topical medicaments, contact lens solutions, eye cosmetics and contaminated towels, pillows or fingers (1–3). Lesions may also arise from airborne or systemic contact, as well as photocontact dermatitis (4, 5). Ophthalmic drugs contain a wide range of potential allergens (6, 7).
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Contact dermatitis 37 (1997), S. 0 
    ISSN: 1600-0536
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Contact dermatitis 35 (1996), S. 0 
    ISSN: 1600-0536
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Contact dermatitis 32 (1995), S. 0 
    ISSN: 1600-0536
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1749-7345
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract— Plasma profiles of reproductive and thyroid hormones were studied in captive striped bass Morone saxatilis during an 11-wk period encompassing the spawning season, and the effect of a sustained-release gonadotropin-releasing hormone agonist (GnRHa)-delivery system (GnRHa-implant) on milt production was evaluated. The highest percentage of spermiating fish was observed between mid-April and mid-May, and mean total expressible milt ranged from 3.5 to 6.0 mL/kg. Plasma gonadotropin II (GtH II) increased significantly, though inconsistently, during the spermiation period, whereas testosterone and 11-ketotestosterone levels declined continually. Plasma 17,20β-dihydroxy-4-pregnen-3-one and 17,20β,21-dihydroxy-4-pregnen-3-one remained low and unchanged during the peak of the spermiation period, while thyroid hormones were high and fluctuated without exhibiting a trend consistent with spermiation. The observed endocrine profiles suggest that captivity can diminish plasma GtH II and triiodothyronine levels in striped bass. Transfer of spermiating males from large holding tanks to small spawning tanks reduced total expressible milt after 14 d, but treatment with a GnRHa-implant restored milt volume, presumably due to the prolonged elevation of plasma GnRHa and GtH II induced by the GnRHa-implant. Also, treatment with the GnRHa-implant induced a two- to four-fold elevation of expressible milt for at least 20 d compared to control fish, while resulting in only a 5 to 15% decrease in sperm density. It appears that captivity and hatchery operations can diminish milt production in striped bass, and that GnRHa-delivery systems, via sustained elevation of plasma GtH II, can induce long-term enhancement in milt volume without affecting sperm density greatly.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Ground-based spectroscopy of Jupiter's moon Europa, combined with gravity data, suggests that the satellite has an icy crust roughly 150 km thick and a rocky interior. In addition, images obtained by the Voyager spacecraft revealed that Europa's surface is crossed by numerous ...
    Type of Medium: Electronic Resource
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  • 8
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    New York : Periodicals Archive Online (PAO)
    Journal of Abnormal Child Psychology. 23:2 (1995:Apr.) 157 
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Der Hautarzt 46 (1995), S. 383-387 
    ISSN: 1432-1173
    Keywords: Schlüsselwörter Id-Reaktion ; Mykobakterien ; Tuberkulid ; Erythema induratum Bazin ; Lichen scrophulosorum ; Papulo-nekrotisches Tuberkulid ; T-Lymphozyten ; Key words Id-reaction ; Mycobacteria ; Tuberculid ; Erythema induratum of Bazin ; Lichen scrophulosorum ; Papulo-necrotic tuberculid ; T-lymphocytes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary The concept of tuberculid was introduced by Darier in 1896. In contrast to “true” cutaneous tuberculosis, properties of the tuberculids were explained by an hyperergic response to myobacteria or their fragments released from a different site of manifest or passed tuberculous infection. Key features include a strongly positive tuberculin skin test, evidence of concomitant manifest or past tuberculosis, and prompt response to antituberculous therapy The inability to culture M. tuberculosis or to demonstrate it microscopically from lesional biopsies, together with reports on tuberculid-like eruptions after BCG vaccination, supports this concept. Clinical manifestations are lichen scrophulosorum, papulo-necrotic tuberculids and erythema induratum of Bazin. The existence of tuberculids has been questioned, however, because the clinical and histological appearances are not always specific. An increasing number of case reports on tuberculids, new immunological tests and molecular biology-based techniques for the detection of mycobacteria have shed new light on the tuberculid concept.
    Notes: Zusammenfassung Der Tuberkulidbegriff wurde 1896 von Darier eingeführt. Damit sollten von „echten“ Hauttuberkulosen symmetrische nichtkontagiöse Hauterkrankungen abgegrenzt werden, die Tuberkulose-assoziiert bei hyperergischer Reaktionslage des Organismus als Antwort auf eine hämatogene Streuung von Tuberkelbakterien oder deren Bestandteile entstanden waren. Ein stark positiver intrakutaner Tuberkulintest (Tuberkulinverdünnung 10 −9 bis 10 −11 ), eine durchgemachte oder noch manifeste Tuberkulose sowie das therapeutische Ansprechen auf Tuberkulostatika bei nicht möglichem histologischen oder kulturellen Nachweis von M. tuberculosis in den Hautveränderungen und ebenfalls die Beobachtung tuberkulidartiger Hauterscheinungen nach BCG-Impfung stützen dieses Konzept. Dem häufig hohen Anteil zirkulierender, PPD-spezifischer T-Lymphozyten wird eine besondere Rolle zugesprochen. Das pathogenetische Tuberkulidkonzept wurde auch auf andere infektionsallergische Hautreaktionen übertragen (Mykid, Bakterid, Virusid). „Id-Reaktionen”äußern sich meist als nodöse oder multiforme Erytheme, sowie als dyshidrosiforme, lichenoide oder papulo-nekrotische Exantheme. Als gesicherte Tuberkulide gelten Lichen scrophulosorum, papulo-nekrotisches Tuberkulid und Erythema induratum Bazin. Die Variationsbreite von klinischem und histologischem Bild, die wieder wachsende Zahl kasuistischer Beobachtungen sowie neuere immunologische und molekularbiologische Untersuchungsmöglichkeiten haben die Forschung über das Wesen von Tuberkuliden erneut in Gang gebracht.
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1573-7276
    Keywords: hepatic sinusoids ; intravital microscopy ; micrometastasis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: In vivo fluorescence videomicroscopy (IVFM) was used to analyse the behavior of weakly and highly metastatic human colorectal carcinoma (CRC) cells during implantation in the liver. A highly metastatic human CRC cell line, CX-1, and a weakly metastatic line, Clone A, were double-labeled with rhodamine B isothiocyanate-dextran (Rd-Dx) to locate cells and with calcein AM to assess cell metabolic activity in an experimental metastasis model. Double-labeled CRC cells (2.0 × 106) were injected into the spleens of groups of nude mice and the livers observed by IVFM over the next 72 h. CRC cells were implanted within 30 s after injection into either portal venules or the proximal third of hepatic sinusoids. Approximately 0.5% of CRC cells traversed the liver through portal-central venous shunts and implanted in the lung. The number of CX-1 cells in the liver was similar to that of Clone A cells during the first 12 h. However, more CX-1 cells than Clone A cells remained in the liver at 24 h and were in groups of 8–12 cells whereas only a few, single Clone A cells were detected in the liver at 72 h. Not all Clone A cells are committed to die within 4 h of implantation because cells harvested 4 h after hepatic implantation proliferated normally in vitro when removed from the hepatic microenvironment. Since the stress of mechanical deformation during implantation may cause differences in cell survival, CX-1 and Clone A cells were passed through filters with 8 µm pores in vitro at 10–15 cm of water pressure to recreate the trauma of hepatic implantation. Approximately 50% of both CX-1 and Clone A cells were lysed. Furthermore, both CRC lines remained metabolically active when co-cultivated with liver cells for at least 24 h in vitro. Thus, the difference in metastatic potential between the two CRC lines may reside in their response to the combination of mechanical implantation and subsequent growth in the liver parenchyma.
    Type of Medium: Electronic Resource
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