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  • 1
    Electronic Resource
    Electronic Resource
    X-ray diagnostics of plasma focus DPF-78 discharge with heavy-gas admixtures (1995)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 77 (1995), S. 4973-4978 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The x-ray structure (λ〈10 A(ring)) of the DPF-78 discharge was investigated with different heavy-gas admixtures to a basic D2 filling. A possible classification of plasma features is proposed. Micropinches with an unusual high aspect ratio of about 10:1 were found. Soft x-ray spectra of single micropinches were registered on film. The use of x-ray spectroscopic methods by means of spectra simulation codes allowed us to estimate the parameters of particular types of pinches with axial size of 0.5 mm and full radial size of 0.05 mm. In the He-like ionization state we obtained ne≈3×1021 cm−3 and Te≈0.8 keV. The electron temperature determined in the H-like ionization stage was considerably higher, Te≈2 keV, indicating a strong ionizing plasma. Possible deviations from the Bennett condition are discussed in connection with the spectroscopic results. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.359305
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  • 2
    Electronic Resource
    Electronic Resource
    Companion cell-specific inhibition of the potato sucrose transporter SUT1 (1996)
    Oxford, UK : Blackwell Publishing Ltd
    Plant, cell & environment 19 (1996), S. 0 
    Details
    ISSN: 1365-3040
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: In many plants, translocation of sucrose from mesnsophyll to phloem for long-distance transport is carrier-mediated. The sucrose H+-symporter gene SUT1 from potato is expressed at high levels in the phloem of mature, exporting leaves and at lower levels in other organs. Inhibition of SUT1 by expression of an antisense gene in companion cells under control of the rolC promoter leads to accumulation of high amounts of soluble and insoluble carbohydrates in leaves and inhibition of photosynthesis. The distribution of in situ localized starch does not correspond with areas of reduced photosynthesis as shown by fluorescence imaging. Dissection of antisense effects on sink and source organs by reciprocal grafts shows that inhibition of transporter gene expression in leaves is sufficient to produce chlorosis in leaves and reduced tuber yield. In contrast to the arrest of plasmodesmal development found in plants that express yeast invertase in the apoplast, in mature leaves of sucrose transporter antisense plants plasmodesmata are branched and have median cavities. These data strongly support an apoplastic mode of phloem loading in potato, in which the sucrose transporter located at the plasma membrane of the sieve element/companion cell complex represents the primary route for sugar uptake into the long-distance translocation pathway.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3040.1996.tb00426.x
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  • 3
    Electronic Resource
    Electronic Resource
    Scalp necrosis in temporal (giant cell) arteritis: implications for the dermatologic surgeon (1996)
    Oxford, UK : Blackwell Publishing Ltd
    Clinical and experimental dermatology 21 (1996), S. 0 
    Details
    ISSN: 1365-2230
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Temporal arteritis, a variant of giant cell arteritis, is a systemic granulomatous vasculitis of large and medium-sized arteries. Usually the clinical Features arc dominated by ophthalmological and neurological complications. In rare instances, ischaemic necrosis, especially of the scalp, may lead patients to the dermatologist. We report a 76-year-old woman presenting with a unilateral scalp necrosis, accompanied by a dramatic ipsilateral impairment of vision. Immediately after duplex-sonography of the extracranial vessels and after initiation of corticosteroid therapy, the diagnosis of temporal arteritis was confirmed by temporal art en biopsy. One month later, because of insufficient secondary healing of the ulcer, the defect was covered by a mesh graft. The taking of the graft was delayed due to immunosuppressive therapy, but was complete. The patient unfortunately died as a result of complications related to surgical removal of an aspergilloma in the sphenoid cavity secondary to immunosuppressive therapy. We discuss the technique of artery biopsy and the possibility of surgical management of scalp necrosis in temporal arteritis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2230.1996.tb00043.x
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  • 4
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    Döller, Johannes: Die Reinheits- u. Speisegesetze des AT (Book Review) (1920)
    Berlin : Periodicals Archive Online (PAO)
    Orientalistische Literaturzeitung. 23 (1920) 212 
    Details
    ISSN: 0030-5383
    Topics: Linguistics and Literary Studies , Ethnic Sciences , History
    Notes: Besprechungen
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:4148-1920-023-00-000040
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  • 5
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    Unknown
    Mader, A. E.: Altchristl. Basiliken u. Lokaltraditionen in Südjudäa (Book Review) (1920)
    Berlin : Periodicals Archive Online (PAO)
    Orientalistische Literaturzeitung. 23 (1920) 74 
    Details
    ISSN: 0030-5383
    Topics: Linguistics and Literary Studies , Ethnic Sciences , History
    Notes: Besprechungen
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:4148-1920-023-00-000063
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  • 6
    Electronic Resource
    Electronic Resource
    Treatment of injuries to the inferior alveolar nerve after endodontic procedures (1998)
    Springer
    Clinical oral investigations 2 (1998), S. 73-76 
    Details
    ISSN: 1436-3771
    Keywords: Key words Inferior alveolar nerve ; Complications ; Endodontic treatment ; Surgical therapy ; Apicectomia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Overextension of filling material into the mandibular canal after root treatment in the lower jaw is a rare but serious complication. Mechanical compression, chemical neurotoxicity and local infection may cause irreversible nerve damage. A report on 11 patients with neurological complaints of the inferior alveolar nerve after endodontic treatment is summarised. The neurological findings are dominated by hypaesthesia and dysaesthesia. Half of the patients reported pain. Hyperaesthesia is found much more rarely. Nearly all the patients had a combination of one or more symptoms. Initial X-rays showed root filling material in the area of the mandibular canal. Nine cases were treated with apicectomy and decompression of the nerve; in two cases, extraction of the tooth was necessary. Only one patient reported persistent pain after surgery. If neurological complaints appear after root filling in the lower jaw, a nerve injury due to root filling material should be ruled out. In cases of overfilling, immediate apicectomy and decompression of the nerve with conservation of the tooth is often the treatment of choice; the tooth may be preserved and the best chance of avoiding permanent nerve damage is provided.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s007840050048
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  • 7
    Electronic Resource
    Electronic Resource
    Buchbesprechungen (1972)
    Springer
    Computing 9 (1972), S. 401-404 
    Details
    ISSN: 1436-5057
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02241612
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  • 8
    Electronic Resource
    Electronic Resource
    Evidence for a significant correlation of donor pancreas morphology and the yield of isolated purified human islets (1999)
    Springer
    Journal of molecular medicine 77 (1999), S. 87-89 
    Details
    ISSN: 1432-1440
    Keywords: Key Words Pancreas ; Islets of Langerhans ; Islet isolation ; Pancreas morphology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In clinical islet transplantation to patients with type 1 diabetes mellitus, the number of isolated and purified islet has been identified as a key determinant for functional success of the islet graft [1]. With improved isolation methods based on the original procedure published by Ricordi et al. [2] yield and function of isolated islets were considerably enhanced. However, there is still a large variance in the number, purity, viability and secretory capacity of islets isolated from brain-dead human donor pancreata, significantly hampering utilization of human islet preparations derived from a single donor for one diabetic recipient. The reasons for the limited success in islet isolation and purification have not been clarified in detail yet. Recent studies have indicated, that donor preconditions, and a number of technical factors during organ procurement and the islet isolation process itself are critical to successful islet isolation [3, 4]. This study aimed at identifying distinct morphological and histopathological characteristics of the donor pancreas as determinants for the outcome of human islet isolation and purification.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001090050308
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  • 9
    Electronic Resource
    Electronic Resource
    Detection and characterization of single molecules in aqueous solution (1996)
    Springer
    Applied physics 63 (1996), S. 517-523 
    Details
    ISSN: 1432-0649
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract.  Using a confocal microscope with a single-photon avalanche photodiode as detector, we studied photon bursts of single Rhodamine 6G (R6G) and Rhodamin B-zwitterion (RB) molecules in aqueous solution by excitation of the lowest excited singlet state S 1 with a frequency-doubled titanium:sapphire laser. Multichannel scaler traces, the fluorescence autocorrelation function and fluorescence decay times determined by time-correlated single-photon counting have been measured simultaneously. The time-resolved fluorescence signals were analyzed with a maximum likelihood estimator. Fluorescence lifetime patterns in steps of 100 ps were generated by convolution with the excitation pulse. The lifetime of the S 1 state was derived from the Kullback-Leibler minimum discrimination information. We are able to demonstrate for the first time identification of two different single dye molecules via their characteristic fluorescence lifetimes of 1.79±0.33 ns (RB) and 3.79±0.38 ns (R6G) in aqueous solution.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01828950
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  • 10
    Electronic Resource
    Electronic Resource
    Detection and characterization of single molecules in aqueous solution (1996)
    Springer
    Applied physics 63 (1996), S. 517-523 
    Details
    ISSN: 1432-0649
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Using a confocal microscope with a single-photon avalanche photodiode as detector, we studied photon bursts of single Rhodamine 6G (R6G) and Rhodamin B-zwitterion (RB) molecules in aqueous solution by excitation of the lowest excited singlet stateS 1 with a frequency-doubled titanium: sapphire laser. Multichannel scaler traces, the fluorescence autocorrelation function and fluorescence decay times determined by time-correlated single-photon counting have been measured simultaneously. The time-resolved fluorescence signals were analyzed with a maximum likelihood estimator. Fluorescence lifetime patterns in steps of 100 ps were generated by convolution with the excitation pulse. The lifetime of theS 1 state was derived from the Kullback-Leibler minimum discrimination information. We are able to demonstrate for the first time identification of two different single dye molecules via their characteristic fluorescence lifetimes of 1.79 ± 0.33 ns (RB) and 3.79 ± 0.38 ns (R6G) in aqueous solution.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01828950
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