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  • 1
    Electronic Resource
    Electronic Resource
    Unmonochromatized synchrotron radiation promoted silicon oxynitridation at room temperature (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 70 (1991), S. 2387-2394 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We investigate the effect of unmonochromatized synchrotron radiation (USR) on the room-temperature reaction between a Si(111)2×1 surface and adsorbed NO. After exposition to NO of the Si(111) surface, an oxynitride/silicon interface is formed. The evolution with irradiation time of the oxynitridation of silicon and of the oxynitride/silicon interface formation is examined in situ by means of core-level and valence-band photoemission spectroscopy, Auger electron spectroscopy, and work-function measurements. The analysis of the valence band and Si 2p, O 2s, and N 2s photoelectron spectra, together with the Auger Si transition, clearly exhibits additional oxynitride formation under USR. The oxygen-to-nitrogen ratio, O/N, from the thin oxynitride layer increased after a long time ((approximately-greater-than)10 min) of exposure to USR. Hence, USR appears to have the opposite effect to the one produced by thermal activation in which the nitridation is favored.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.349412
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  • 2
    Electronic Resource
    Electronic Resource
    Pityriasis lichenoides-like mycosis fungoides in children (2000)
    Oxford, UK : Blackwell Science Ltd
    British journal of dermatology 142 (2000), S. 0 
    Details
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: We report three children with clinical features of pityriasis lichenoides (scaly red to brown papules and macules) in whom there were histopathological findings of mycosis fungoides (disproportionate epidermotropism, Pautrier’s microabscesses, and wiry and coarse collagen bundles). Immunohistochemical staining revealed a prevalence of T lymphocytes in the infiltrate. T-cell receptor gene rearrangement analysis in lesional skin demonstrated rearrangement of the gamma chain in all cases. Human T-cell lymphotropic virus type 1 serology was negative in the two patients in whom this test was performed. Thus, lesions resembling pityriasis lichenoides can be an unusual and potentially misleading presentation of mycosis fungoides.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2133.2000.03307.x
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  • 3
    Electronic Resource
    Electronic Resource
    Room-temperature violet stimulated emission from optically pumped AlGaN/GaInN double heterostructure (1994)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 64 (1994), S. 1377-1379 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: An AlGaN/GaInN heterostructure has been fabricated by metalorganic vapor phase epitaxy. We observed room-temperature (RT) violet stimulated emission from an optically pumped double heterostructure (DH) using GaInN as an active layer. The peak wavelength of the stimulated emission at RT from Al0.17Ga0.83N/Ga0.91In0.09N DH is 402.5 nm, and the threshold of excitation power density is about 0.13 MW/cm2.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.111942
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  • 4
    Electronic Resource
    Electronic Resource
    Surface-mode stimulated emission from optically pumped GaInN at room temperature (1995)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 67 (1995), S. 267-269 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: In this letter, we report the surface-mode stimulated emission from optically pumped Ga0.11In0.89N at room temperature. The GaInN was deposited on the intermediate layer of GaN grown on the AlN buffer layer over sapphire substrate using horizontal metalorganic vapor phase epitaxy method. The peak wavelength and the full width at half-maximum of surface-mode stimulated emission was 406 nm and 25.6 meV, respectively, and the threshold of excitation power density was about 0.52 MW/cm2. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.114778
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  • 5
    Electronic Resource
    Electronic Resource
    Optical gain of optically pumped Al0.1Ga0.9N/GaN double heterostructure at room temperature (1994)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 64 (1994), S. 1535-1536 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: In this letter, we report the measurement of the gain of an optically pumped Al0.1Ga0.9N/GaN double heterostructure (DH) which was prepared on a sapphire substrate by metalorganic vapor phase epitaxy using an AlN buffer layer. At room temperature, the optical gain of stimulated emission from Al0.1Ga0.9N/GaN DH was measured to be 160 cm−1 at pumping power density of 200 kW/cm2.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.111883
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  • 6
    Electronic Resource
    Electronic Resource
    Cutaneous B-cell lymphoma—a clinical, pathological and immunohistochemical study (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Clinical and experimental dermatology 18 (1993), S. 0 
    Details
    ISSN: 1365-2230
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Eleven cases of cutaneous B-cell lymphoma (CBCL) were studied. The ages at presentation ranged from 34 to 79 years (mean = 59·9 years). Six patients were female and five male. Five of the 11 patients had a solitary tumour and the other six had multiple tumours at initial presentation. According to Burg's classification, six cases were at stage I, two stage II, two stage III and one was at stage IV at initial presentation. Abnormalities in laboratory data were rare, except for serum lactic dehydrogenase values. Epidermotropism was not detected, and the area mainly affected by neoplastic cells was the reticular dermis (seven cases) and suhcutis (four cases). Biopsy-specimens from the patients analysed by immunohisiochemical techniques on paraffin or cryostat sections showed CD20 and/or CD22 positivity. Biopsy specimens from two patients which showed CD 10 positivity were diffuse large cell types by the working formulation and presented as pre-B-cell lymphoma. At least two groups of CBCL were demonstrable on the basis of prognosis. One was a benign low-grade lymphoma presenting with solitary tumours, mature B-cell markers and intermediate-grade pathology, and the other was a high-grade lymphoma with multiple tumours, pre-B-cell or mature B-cell markers and a poor prognosis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2230.1993.tb01023.x
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  • 7
    Electronic Resource
    Electronic Resource
    β-Catenin expression in the transitional cell zone of pilomatricoma (2001)
    Oxford, UK : Blackwell Science Ltd
    British journal of dermatology 145 (2001), S. 0 
    Details
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background β-Catenin, a participant in the Wnt pathway, has been shown to play an important role in the morphogenesis of hair follicles and the formation of hair follicle-related tumours, including pilomatricomas. It has been observed that at least 75% of human pilomatricomas possess activating mutations in β-catenin. These findings suggested that β-catenin plays an important role in the tumorigenesis of pilomatricomas. However, the pattern of β-catenin expression in pilomatricoma tissues is still unclear. Objectives To examine the expression of β-catenin in human pilomatricomas by immunohistochemical staining. Methods Twenty-six formalin-fixed and paraffin-embedded samples of pilomatricoma tissue were studied. Results Most transitional cells of pilomatricoma expressed β-catenin strongly, but the basophilic cells and shadow cells did not. β-Catenin showed a prominent membranous immunoreactivity and a small amount of condensed cytoplasmic staining, but there was definitely no evidence of nuclear positivity. Conclusions These findings imply that β-catenin is primarily involved in cell–cell adhesion rather than cellular proliferation during pilomatricoma pathogenesis, and suggest that if β-catenin is involved in pilomatricoma tumorigenesis and tumour growth, it plays an indirect role.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2133.2001.04433.x
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  • 8
    Electronic Resource
    Electronic Resource
    Iron-induced bronchial injury (2002)
    Oxford, UK : Blackwell Science Ltd
    Histopathology 41 (2002), S. 0 
    Details
    ISSN: 1365-2559
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2559.2002.14322.x
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  • 9
    Electronic Resource
    Electronic Resource
    Successful treatment with fluconazole of protothecosis developing at the site of an intralesional corticosteroid injection (1996)
    Oxford, UK : Blackwell Publishing Ltd
    British journal of dermatology 135 (1996), S. 0 
    Details
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Summary We report a case of cutaneous protothecosis treated successfully with oral fluconazole. Fluconazole appears to be an effective alternative to conventional drugs for the treatment of cutaneous protothecosis. Cutaneous protothecosis is an uncommon infection due to achlorophyllic, saprophytic, algae-like unicellular organisms of the genus Prototheca that occurs mainly in immunocompromised patients. To date there is no standard treatment regimen. Surgical excision, oral ketoconazole, intravenous amphotericin B alone or in combination with oral teracycline have been reported to be effective in the management of protothecosis.1–3 We report a 55-year-old immunocompetent woman with cutaneous protothecosis which developed at the site of intralesional triamcinolone acetonide injection, who was successfully treated with oral fluconazole.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2133.1996.d01-1084.x
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  • 10
    Electronic Resource
    Electronic Resource
    Peripheral T-cell lymphoma involving subcutaneous tissue (1995)
    Oxford, UK : Blackwell Publishing Ltd
    British journal of dermatology 132 (1995), S. 0 
    Details
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The peripheral T-cell lymphomas, presumably derived from various immunocompetent peripheral T-cell system components, form a heterogeneous group of non-Hodgkin's lymphomas. We describe two patients with peripheral T-cell lymphoma primarily involving subcutaneous tissue. They presented with multiple subcutaneous nodules. Skin biopsy specimens in both patients demonstrated a lobular subcutaneous infiltrate. The infiltrate consisted of small and medium-sized atypical lymphoid cells. Both patients had a protracted clinical course before they were diagnosed as having malignant lymphoma. We detected latent Epstein-Barr virus infection in the skin lesions of case 2. Latent Epstein-Barr virus infection might be related to the development of this variant of peripheral T-cell lymphoma.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2133.1995.tb05030.x
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