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  • 1
    Digitale Medien
    Digitale Medien
    In situ photoluminescence spectral study of porous Si in HF aqueous solution (1994)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 65 (1994), S. 1653-1655 
    Details
    ISSN: 1077-3118
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: Time-dependent change in the visible luminescence of porous Si immersed in HF aqueous solution was measured in a short acquisition time (5 s) with a charge coupled device detector. Under Ar+ laser light (514.5 nm) irradiation, the photoluminescence band of the porous Si shifted to shorter wavelength accompanying a reduction of the peak intensity. The result suggests that the size of the Si nanostructure is closely related to the gap energy of the porous Si.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.112945
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  • 2
    Digitale Medien
    Digitale Medien
    Surface spectroscopy with high spatial resolution using metastable atoms (1994)
    [s.l.] : Nature Publishing Group
    Nature 372 (1994), S. 657-659 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] In contrast to the charged-particle or photon beam, the meta-stable-atom beam can not be converged and therefore the electron emission image produced by metastables is difficult to obtain. To date, only an emission microscope image by fast argon atoms mixed with metastable ones has been reported6. ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/372657a0
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  • 3
    Digitale Medien
    Digitale Medien
    Calcium pyrophosphate-induced pleurisy in rats: A new model of acute inflammation (1994)
    Springer
    Inflammation research 43 (1994), S. 221-224 
    Details
    ISSN: 1420-908X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract A model is described of acute inflammation in the pleural cavity of rats using calcium pyrophosphate as the irritant. This model would seem to simulate the pseudogout syndrome. It has been shown to be acute in onset, dominated by polymorphonuclear cells, complement independent. The advantage of the model is that volume of exudate, numbers and types of cells may be quantitated. Prostaglandins and cyclic AMP have been measured in the migrating cells. The significance of these findings has been discussed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01986693
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  • 4
    Digitale Medien
    Digitale Medien
    Isolation and structure elucidation of acinetobactin., a novel siderophore from Acinetobacter baumannii (1994)
    Springer
    Archives of microbiology 162 (1994), S. 249-254 
    Details
    ISSN: 1432-072X
    Schlagwort(e): Siderophore ; Iron-uptake ; Acinetobacter baumannii ; Acinetobactin ; ω-N-Hydroxyhistamine 2,3-Dihydroxybenzoic acid
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract A novel siderophore, called acinetobactin, with both catecholate and hydroxamate functional groups was isolated from low-iron cultures of Acinetobacter baumannii ATCC 19606. The structure was elucidated by chemical degradation, fast-atom bombardment mass spectrometry and 1H and 13C NMR spectroscopy. Acinetobactin was composed of ω-N-hydroxyhistamine, threonine and 2,3-dihydroxybenzoic acid, the last two components forming an oxazoline ring. Acinetobactin was structurally related to anguibactin, a plasmid-encoded siderophore of Vibrio anguillarum. The only difference was that acinetobactin possessed an oxazoline ring instead of a thiazoline ring. Four of 12 other clinical A. baumannii strains examined produced acinetobactin, indicative of strain-to-strain variation in the ability to produce acinetobactin. In addition, a relatively small amount of acinetobactin was also detected in A. haemolyticus ATCC 17906.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00301846
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  • 5
    Digitale Medien
    Digitale Medien
    Isolation and structure elucidation of acinetobactin, a novel siderophore from Acinetobacter baumannii (1994)
    Springer
    Archives of microbiology 162 (1994), S. 249-254 
    Details
    ISSN: 1432-072X
    Schlagwort(e): Key words     Siderophore ; Iron-uptake ; Acinetobacter baumannii ; Acinetobactin ; ω-N-Hydroxyhistamine ; 2 ; 3-Dihydroxybenzoic acid
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract      A novel siderophore, called acinetobactin, with both catecholate and hydroxamate functional groups was isolated from low-iron cultures of Acinetobacter baumannii ATCC 19606. The structure was elucidated by chemical degradation, fast-atom bombardment mass spectrometry and 1H and 13C NMR spectroscopy. Acinetobactin was composed of ω-N-hydroxyhistamine, threonine and 2,3-dihydr ybenzoic acid, the last two components forming an oxazoline ring. Acinetobactin was structurally related to anguibactin, a plasmid-encoded siderophore of Vibrio anguillarum. The only difference was that acinetobactin possessed an oxazoline ring instead of a thiazoline ring. Four of 12 other clinical A. baumannii strains examined produced acinetobactin, indicative of strain-to-strain variation in the ability to produce acinetobactin. In addition, a relatively small amount of acinetobactin w as also detected in A. haemolyticus ATCC 17906.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00301846
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  • 6
    Digitale Medien
    Digitale Medien
    Expression of c-kit ligand in human keratinocytes (1994)
    Springer
    Archives of dermatological research 286 (1994), S. 273-277 
    Details
    ISSN: 1432-069X
    Schlagwort(e): Keratinocytes ; c-kit Ligand ; Polymerase chain reaction (PCR)
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract The c-kit ligand is expressed on tissue-anchored stromal cells. It plays an important role in the development of c-kit-bearing cells, such as haematopoietic cells, germ cells, mast cells and melanocytes. In the present study, we used the reverse transcriptase-mediated polymerase chain reaction (PCR) technique to investigate whether human keratinocytes are able to express c-kit ligand mRNA. Two sets of primers were designed to distinguish two types of c-kit ligand mRNA (full-length type and spliced type). One set was used to amplify an 882-bp DNA fragment from the full-length type, and a 798-bp DNA fragment from the spliced type. Another set was used to amplify a 375-bp DNA fragment from the full-length type only. A cDNA fragment corresponding to the full-length type mRNA was amplified from a cDNA preparation of cultured human keratinocytes as well as from epidermis obtained by the suction blister technique. This result indicates the spontaneous transcription of full-length type mRNA of the c-kit ligand in human keratinocytes.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00387600
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  • 7
    Digitale Medien
    Digitale Medien
    Serum C-reactive protein and immune responses in dogs inoculated withBordetella bronchiseptica (phase I cells) (1994)
    Springer
    Veterinary research communications 18 (1994), S. 347-357 
    Details
    ISSN: 1573-7446
    Schlagwort(e): antibody ; Bordetella bronchiseptica ; bronchopneumonia ; C-reactive protein ; dogs
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Eight Beagle dogs were inoculated intrabronchially with 5×109 live, avirulent cells ofBordetella bronchiseptica L-414 strain (phase I cells) (B. bronchiseptica) to investigate the serum levels of their C-reactive protein, the white blood cell counts, the antibody responses toB. bronchiseptica in the sera and tracheal secretions, and the effects of prednisolone given to four of the dogs on C-reactive protein (CRP), white blood cells (WBC) and immune responses. In two Beagle dogs inoculated intrabronchially with sterile physiological saline, the concentrations of CRP and the WBC counts did not increase. CRP was markedly increased one day after inoculation in the dogs inoculated withB. bronchiseptica to 385.0–720.0 µg/ml (mean 498±132 µg/ml) in the group given theB. bronchiseptica inoculation only, and to 372.0–649.0 µg/ml (mean 551±106 µg/ml) in the group treated with prednisolone following inoculation ofB. bronchiseptica, as determined by an enzyme-linked immunosorbent assay (ELISA). The CRP levels were 23–95 times the pre-inoculation values, which indicated that prednisolone had no effect on the production of CRP. In the prednisolone-treated group, the WBC count increased and stayed at an increased level for approximately 12 days. An indirect fluorescent antibody test led to the detection of anti-B. bronchiseptica IgM and IgG antibodies in the sera from 5 days afterB. bronchiseptica inoculation and S-IgA and IgG anti-B. bronchiseptica antibodies in the tracheal secretions on the day after the challenge exposure toB. bronchiseptica. The increase in CRP after challenge exposure toB. bronchiseptica was significantly (p〈0.05) smaller than that found after the first inoculation ofB. bronchiseptica.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01839285
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  • 8
    Digitale Medien
    Digitale Medien
    Klinefelter's syndrome and rheumatoid arthritis report of a case and review of the literature (1994)
    Springer
    Clinical rheumatology 13 (1994), S. 500-503 
    Details
    ISSN: 1434-9949
    Schlagwort(e): Klinefelter's Syndrome ; Rheumatoid Arthritis ; Male-Hypogonadism ; Testosterone
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary Our case report describes a patient with Klinefelter's syndrome (KFS) associated with rheumatoid arthritis (RA). He had active RA in 1985 but his arthritis almost subsided in 1993 without intensive treatments for RA as well as KFS. Recently, the lower levels of testosterone in male RA patients, especially at the active phase has been reported. However, it is still questionable whether hypogonadism is a predisposing factor or just a consequence of disease. Since our case had a mild clinical course, and since the incidence of RA associated with KFS is very rare in comparison with other rheumatic diseases, may suggest that the low levels of testosterone are not a predisposing factor to the activity of RA.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02242951
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