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  • 1
    Digitale Medien
    Digitale Medien
    Juvenile colloid milium: clinical, histological and ultrastructural features (1992)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of cutaneous pathology 19 (1992), S. 0 
    Details
    ISSN: 1600-0560
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: We report the clinical, histological and ultrastructural features of juvenile colloid milium affecting a brother and sister. In this rare condition, translucent papules develop on sun-exposed areas of skin, with onset in childhood. Histologically and ultrastructurally, the papules consist of amyloid-like material derived from epidermal keratonocytes. A review of the literature suggests a possible genetic abnormality that leads to sun-induced degeneration of keratinocytes.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1600-0560.1992.tb00617.x
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  • 2
    Digitale Medien
    Digitale Medien
    Photochromism induced in an electrolytically pretreated Mo03 thin film by visible light (1992)
    [s.l.] : Nature Publishing Group
    Nature 355 (1992), S. 624-626 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] The MoO3 amorphous film was prepared by vacuum evaporation of high-purity MoO3 powders (99.9%) onto a l-mm-thick NESA glass substrate (5 x 2.5 cm), with a typical film thickness of -l,OOOnm being obtained. Photochromic experiments were done in air, and a 500-W high-pressure mercury lamp was ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/355624a0
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  • 3
    Digitale Medien
    Digitale Medien
    The viscoelasticity of spinnable solutions of alkyltrimethylammonium salicylates (1992)
    Springer
    Colloid & polymer science 270 (1992), S. 249-258 
    Details
    ISSN: 1435-1536
    Schlagwort(e): Viscoelasticity ; spinnability ; tetradecyltrimethylammoniumsalicylate ; hexadecyltrimethylammoniumsalicylate ; rodlikemicelle
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Maschinenbau
    Notizen: Abstract The viscoelasticity has been measured for aqueous solutions of tetradecyl-and hexadecyltrimethylammonium salicylates (C14TASal, C16TASal). The aqueous solutions of C14TASal without salt displayed the gel-like behavior at 10.0×10−2 g cm−3, but those more dilute than 3.2×10−2 g cm−3 presented the viscoelasticity similar to that of a Maxwell liquid. The Maxwell-like behavior was converted to the polymer-like one on the addition of (0.1–0.2) M NaBr or (0.02–0.2) M NaSal. The gel-like viscoelasticity can be connected with the spinnability of “cohesive fracture failure”, and the Maxwell-like and polymer-like viscoelasticities are concerned with the spinnability of “ductile failure”. The gel-like and Maxwell-like viscoelasticities originate in the pseudo-network formed by the pseudo-linkages between rodlike micelles, while the polymer-like viscoelasticity is caused by the entanglement of long rodlike micelles in semidilute and concentrated solutions. The aqueous solutions of C16TASal behaved very similar to those of C14TASal.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00655477
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  • 4
    Digitale Medien
    Digitale Medien
    Determination of the thermal conductivity of xenon-helium mixtures at high temperatures by the shock-tube method (1992)
    Springer
    International journal of thermophysics 13 (1992), S. 211-221 
    Details
    ISSN: 1572-9567
    Schlagwort(e): corresponding states ; high temperatures ; mixing rule ; shock-tube method ; thermal conductivity ; xenon-helium mixtures
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract The thermal conductivity of gases at high temperatures has been measured by the shock-tube method, which is uniquely suited to measure thermal conductivities of gases at high temperatures above 2000 K. A consistent set of thermal-conductivity data over a wide range of temperatures has been obtained from optimum combinations of shock-tube experiments at high temperatures, previously published data at lower temperatures, and a theoretical correlation of the temperature dependence. In the present study, the thermal conductivity of xenon-helium mixtures has been determined at compositions of 10 and 30 mol% xenon over the temperature range from 300 to 4800 K. Even though there is a large difference between the thermal conductivity of pure xenon and that of helium, it is interesting that the dependences of the thermal conductivity of the mixture on temperature and composition are linear. The experimental results are in good agreement with the predicted values based on the corresponding-states principle and the mixing rule. From these experimental results, interpolating the corresponding-states correlation data, we represent the equation of xenon-helium gas mixtures for thermal conductivity in terms of temperature and composition.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00504432
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  • 5
    Digitale Medien
    Digitale Medien
    Amorphous nickel-valve metal-platinum group metal alloy electrodes for hydrogen-oxygen sulphuric acid fuel cells (1992)
    Springer
    Journal of applied electrochemistry 22 (1992), S. 1017-1024 
    Details
    ISSN: 1572-8838
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Elektrotechnik, Elektronik, Nachrichtentechnik
    Notizen: Abstract Powder catalysts were prepared by immersion of amorphous Ni-40Zr and Ni-40Ti alloys containing a few at % of platinum group elements in HF solution. This treatment led to preferential dissolution of the valve metal and nickel with a consequent formation of microcrystalline alloy powders consisting of concentrated platinum group elements and some nickel and valve metal. Porous gas-diffusion electrodes prepared by using these alloy catalyst powders were employed for electrochemical reduction of oxygen and oxidation of hydrogen in 1 M H2SO4 at 25°C. The activity of the electrodes prepared from the amorphous alloys containing Pt−Ru, Pt−Rh, Pt and Pd for oxygen reduction was considerably higher than that of the platinum black electrode. Oxidation of hydrogen occurred readily close to the equilibrium potential. Amorphous alloy electrodes containing Pt−Ru, Pt−Rh and Pt were more active than the platinum black electrode for the hydrogen oxidation.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01029579
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  • 6
    Digitale Medien
    Digitale Medien
    Polymorphism of coagulation factor XIII B subunit: Further occurrence of FXIIIB*15 in Japanese and phenotyping in bloodstains (1992)
    Springer
    International journal of legal medicine 104 (1992), S. 317-319 
    Details
    ISSN: 1437-1596
    Schlagwort(e): Polymorphism FXIIIB ; Population genetics ; Bloodstains ; Polymorphismus FXIIIB ; Populationsgenetik ; Blutspuren
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin , Rechtswissenschaft
    Beschreibung / Inhaltsverzeichnis: Zusammenfassung Der Polymorphismus des FXIIIB wurde bei 555 unverwandten Japanern mit Hilfe der isoelektrischen Fokussierung und anschließendem Immunoblotting untersucht. Fünf allgemein vorkommende Phänotypen und die seltene Variante FXIIIB 15-3 wurden beobachtet. Die Allel-Frequenzen waren FXIIIB = 0,3063, FXIIIB2 = 0,0162, FXIIIB3 = 0,6766 und FXIIIB15 = 0,0009. Die Bestimmung der Phänotypen war auch an Blutspuren mit folgenden Lagerungsbedingungen möglich: Bei 37°C über einen Zeitraum bis zu 4 Monate, bei Raumtemperatur und bei 4°C länger als 6 Monate. Das FXIIIB-System kann einen neuen, aussagekräftigen genetischen Marker für gerichtsmedizinische Blutspurenuntersuchungen darstellen.
    Notizen: Summary The polymorphism of FXIIIB was investigated in 555 unrelated Japanese individuals using isoelectric focusing and immunoblotting. Five common phenotypes and a rare variant type FXIIIB 15-3 were observed. The allele frequencies were FXIIIB*1 = 0.3063, FXIIIB*2 = 0.0162, FXIIIB*3 = 0.6766 and FXIIIB*15 = 0.0009. Phenotyping was also possible from bloodstains stored at 37°C for up to 4 months and from bloodstains stored at room temperature and at 4°C for over 6 months. The FXIIIB system can provide a new powerful genetic marker for the medicolegal grouping of bloodstains.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01369549
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