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  • 1
    Electronic Resource
    Electronic Resource
    High-power operation in self-sustained pulsating AlGaAs semiconductor lasers with multiquantum well active layer (1988)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 53 (1988), S. 2471-2473 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Self-sustained pulsating optical power and kink level in AlGaAs semiconductor lasers are remarkably improved by introducing a multiquantum well (MQW) structure in the active layer. Stable fundamental transverse mode operation at output power up to 50 mW and self-sustained pulsation at output power up to 40 mW are obtained simultaneously for MQW lasers with antireflective and high-reflective coatings on the facets. Low-noise characteristics (relative intensity noise of less than 10−13 Hz−1 under 3–4% optical feedback) are obtained in the output power range from 7 to 17 mW in MQW lasers with high-reflective coating on the rear facet. These results suggest that low-noise high-power characteristics can be achieved in self-sustained pulsating lasers with a MQW active layer.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.100216
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  • 2
    Electronic Resource
    Electronic Resource
    A case of a lymphoproliferative disorder: Usefulness of DNA analysis in diagnosis (1988)
    Oxford, UK : Blackwell Publishing Ltd
    British journal of dermatology 118 (1988), S. 0 
    Details
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: We describe a patient in whom a suppressor/cytotoxic T cell lymphoma was suspected on the basis of histology and immunohistochemistry. DNA analysis of specimens from three different lesions, using restriction enzymes Eco RI and Bam HI, showed the same rearrangement of the T cell receptor β-chain genes. We consider this technique to be of value in the early diagnosis of malignant lymphoma when differential diagnosis from other lymphoproliferative disorders is difficult with conventional methods.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2133.1988.tb01784.x
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  • 3
    Electronic Resource
    Electronic Resource
    The effect of spatial filtering on non-linear distortions of laser diodes (1988)
    Springer
    Optical and quantum electronics 20 (1988), S. 39-48 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract It is demonstrated for the first time that spatial filtering of partially reflected irradiance of light from a directly modulated semiconductor laser diode produces a weak but appreciable amount of harmonic distortions. The laser diode discussed here is assembled to be misaligned in such a way that there is significant reflection of light from the submount attached to the heat sink. This geometry of laser and submount gives rise to interfered light intensities of simultaneous AM- and FM-modulated outputs in the far-field region. Numerical calculations are presented for a variety of laser structures and FM-modulation parameters. The second-order harmonic distortion is found to disclose multiple peaks with respect to the aperture radius of a receiving optical system.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02069695
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  • 4
    Electronic Resource
    Electronic Resource
    Relationship between macrophage infiltration and epidermopoiesis in delayed-type hypersensitivity (1988)
    Springer
    Archives of dermatological research 280 (1988), S. 18-22 
    Details
    ISSN: 1432-069X
    Keywords: Macrophage infiltration ; Epidermopoiesis ; Delayed-type hypersensitivity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The relationship between epidermopoiesis and macrophage infiltration was studied in delayed-type hypersensitivity (DTH) skin lesions in guinea pigs that had been sensitized with heat-killed tubercle bacilli or bovine serum albumin (BSA). Macrophages were identified with acid-phosphatase and nonspecific esterase stains, and the epidermal proliferative response was studied at DTH challenge sites by autoradiography. The number of macrophages in the sensitized animals was higher than that in the nonsensitized animals 48–72 h following challenge injections, when labelling indices were also elevated in the former group. Soluble factor(s) from cultured macrophages transiently enhanced the DNA synthesis of epidermal cells in cultures and in the sites injected with the factor(s). These results suggest that macrophages retained in the DTH lesion may play a role in an acceleration of epidermal proliferation, thus leading to acanthosis and lichenification.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00412683
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  • 5
    Electronic Resource
    Electronic Resource
    Changes of membrane fluidity and Na+, K+-ATPase activity during cellular differentiation in the guinea pig epidermis (1988)
    Springer
    Archives of dermatological research 280 (1988), S. 29-32 
    Details
    ISSN: 1432-069X
    Keywords: Electron spin resonance ; Epidermis ; Percoll density centrifugation ; Membrane fluidity ; Na+, K+-ATPase
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The dynamic properties of plasma membrane in epidermal cells were determined by means of electron spin resonance using two kinds of doxyl stearic acid spin labeling agents: 5-DSA and 12-DSA. 5-DSA and 12-DSA are stearic acid analogues with a nitroxide radical ring at the 5th and 12th carbon positions, and these motions reflect molecular motion of lipid bilayer surrounding the hydrophilic region and the hydrophobic region, respectively. Guinea pig epidermal cells were separated into three regions of keratinocytes by Percoll density gradient centrifugation; the upper, middle, and lower epidermal cells. The order parameter S values for 5-DSA and 12-DSA incorporated into the isolated keratinocytes increased, suggesting a decrease in the plasma membrane fluidity, as cells approached the upper epidermal cell layer. The Na+, K+-ATPase activity as a plasma membrane-bound enzyme was determined in each epidermal cell region, and was found to decrease gradually as the cells approached the upper layer. Accordingly, the differentiation of epidermal cells in the keratinization process was found to be assiciated with a decrease in plasma membrane fluidity and with a decline of Na+, K+-ATPase activity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00412685
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  • 6
    Electronic Resource
    Electronic Resource
    Mantle and crustal Ce/Nd isotope systematics (1988)
    [s.l.] : Nature Publishing Group
    Nature 333 (1988), S. 404-404 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] TANAKA ET AL. reply-First, we would like to correct the term "mantle array" in the summary of ref. 1 to crustal array. We originally used the term crustal array to distinguish the clear eCe-eNd array, but the term was changed in the editing of our manuscript. It was pointed out in ref. 1 that ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/333404a0
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  • 7
    Electronic Resource
    Electronic Resource
    Molecular characterization of three rabbit rotavirus strains (1988)
    Springer
    Archives of virology 98 (1988), S. 253-265 
    Details
    ISSN: 1432-8798
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary We report biochemical (RNA and protein patterns and gene-coding assignments) and serologic (serotype and subgroup) properties of three strains of rabbit rotaviruses — Ala, C11 and R2. The RNA electropherotypes were a standard “short” pattern for R2, an unusual “short” pattern for Ala, and an unusual “long” pattern for C11. Serologic studies indicated that these viruses were all group A serotype 3 rotaviruses. In addition, the Ala and C11 viruses were found to possess subgroup I specificity, whereas the R2 virus possessed subgroup II specificity. In contrast to their distinctive RNA patterns, the polypeptide patterns of the rabbit viruses were similar to those of SA11. To identify cognate genes and determine gene-coding assignments for the rabbit rotaviruses, cDNA probes of individual SA11 genes were hybridized to rabbit rotaviral genomic RNA segments that had been separated by polyacrylamide gel electrophoresis and transferred to filters (Northern blots). The order of genome segments 7–11 for each of the rabbit rotaviruses was unique and differed from that of SA11 genes. These differences were possibly due to rearrangements of the RNA sequences within these individual genome segments. Sequence analysis of the individual RNA segments will confirm whether genome rearrangements are the molecular basis for these novel migration patterns.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01322173
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  • 8
    Electronic Resource
    Electronic Resource
    Biological functions of the NS1 protein of an influenza B virus mutant which has a long carboxyl terminal deletion (1988)
    Springer
    Archives of virology 102 (1988), S. 173-185 
    Details
    ISSN: 1432-8798
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary To clarify the function of the NS gene of a highly cytolytic mutant of influenza virus B/Yamagata/1/73 which expresses an NS1 protein with a long carboxyl terminal deletion (clone 201), we prepared a single gene reassortant (201 L-77) and a control reassortant (YL-20) in which all the genes were of wild type influenza virus B/Lee/40 origin except NS gene which was derived from either clone 201 or wild type B/Yamagata. Comparative studies have revealed that 201 L-77 destructed infected cells more severely and much earlier after infection than did YL-20, although both produced comparable amount of infectious virus. The highly cytolytic reassortant 201 L-77 produced a small plaque, while the weakly cytolytic reassortant YL-20 produced a large plaque in MDCK cells. There was little difference between the two reassortants in the time course and the amount of synthesis of viral proteins within the infected cells. However, the mode of synthesis of viral RNA (vRNA) by 201 L-77 was greatly altered compared with YL-20.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01310823
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  • 9
    Electronic Resource
    Electronic Resource
    Highly sensitive spectrophotometric determination of cobalt using o-hydroxyhydroquinonephthalein and hydrogen peroxide in the presence of mixed surfactants (1988)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 330 (1988), S. 619-623 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary The effects of cobalt(II) and surfactants on the decomposition of various xanthene dyes by hydrogen peroxide have been systematically investigated. A simple and highly sensitive spectrophotometric determination of cobalt(II) (0.05 ∼ 1.2 Μg/10 ml) is proposed. The method is based on the catalytic effect of cobalt(II) on the oxidation of o-hydroxyhydroquinonephthalein (Qnph) by hydrogen peroxide. The proposed catalytic spectrophotometric determination was sensitive, selective, reproducible and virtually unaffected by the presence of other ions; the effective molar “desorptivity” was 4.2×108 l/mol per cm, Sandell sensitivity was 0.15 pg/cm2, and the relative standard deviation was 3.2% at 0.6 ng/10 ml (n=5). The selective assays of cobalt(II) in water samples were also investigated with satisfactory results (95% ∼ 101%).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00473779
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  • 10
    Electronic Resource
    Electronic Resource
    Some minimax problems of vector-valued functions (1988)
    Springer
    Journal of optimization theory and applications 59 (1988), S. 505-524 
    Details
    ISSN: 1573-2878
    Keywords: Vector-valued optimization ; weak cone saddle points ; weak cone saddle values ; minimax problems
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract The concepts of cone extreme points, cone saddle points, and cone saddle values are introduced. The relation of inclusion among the sets mini x∈X max y∈Y f(x, y), maxi y∈Y min x∈X f(x, y), and the set of all weak cone saddle values is investigated in the case where the image space ℝ n off is ordered by an acute convex cone.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00940312
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