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  • 1
    Electronic Resource
    Electronic Resource
    Grazing incidence optics for soft x-ray microscopy : Proceedings of the 4th international conference on synchrotron radiation instrumentation (1992)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 63 (1992), S. 569-573 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: We have developed and brought into operation a new type of scanning soft x-ray microscope basing on a grazing incidence mirror. A ring shaped ellipsoidal mirror serves as a nonimaging but concentrating optical element to produce a microfocus. The specimen is mechanically scanned, and the image is recorded a pixel at a time. Transmission, total photoelectron yield, photoelectron spectroscopy, fluorescence, and stimulated desorption of ions and neutrals can provide information in the range of photon energies between 20 and 1300 eV. While the smallest spatially resolved structure, limited by the mirror imperfections, has a size of 0.4 μm, the minimum diameter of selected areas necessary for photoelectron microspectroscopy presently is about 4 μm.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1142707
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Self-compatibility in aLycopersicon peruvianum variant (LA2157) is associated with a lack of style S-RNase activity (1994)
    Springer
    Theoretical and applied genetics 88 (1994), S. 859-864 
    Details
    ISSN: 1432-2242
    Keywords: Tomato ; Lycopersicon peruvianum ; Self-incompatibility ; S-locus mutation ; Pollination Style-ribonuclease (S-RNase)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A series of crosses between a naturally-occurring self-compatible accession ofLycopersicon peruvianum and a closely-related self-incompatible accession were used to demonstrate that the mutation to self-compatibility is located at the S-locus. Progeny of the crosses contain abundant style proteins of about 30 kDa that segregate with the S6and S7-alleles from the SI parent and the Sc-allele from the SC parent. The S6and S7-associated proteins have ribonuclease activity whereas the Sc-associated protein is not an active ribonuclease. This finding indicates that S-RNases are determinants of self-incompatibility in the style and that the ribonuclease activity is essential for their function.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01253997
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Low risk of health care workers for infection with hepatitis C virus (1990)
    Springer
    Infection 18 (1990), S. 286-288 
    Details
    ISSN: 1439-0973
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Es wurden 294 in medizinischen Berufen tätige Personen aus 21 verschiedenen Fachbereichen auf Hepatitis C Virus (HCV) Antikörper mittels ELISA-Testset der Firma Ortho untersucht, und nur sechs (2%) positiv gefunden. Personen mit direktem Patientenkontakt wie Ärzte und Schwestern scheinen dabei ein höheres Infektionsrisiko zu haben, als Personen ohne direkten Kontakt wie medizinisch-technische Assistentinnen oder das Reinigungspersonal. Auf der geriatrischen Abteilung ist das Risiko vielleicht etwas höher als auf den anderen Stationen, aber generell ist das Hepatitis-C-Infektionsrisiko für das Personal im medizinischen Bereich als eher gering einzustufen.
    Notes: Summary 294 health care workers from 21 different departments were tested for hepatitis C antibodies by means of the Ortho ELISA test. Only six (2%) were found positive. Health care workers having direct contact with the patient, such as doctors and nurses, seem to be at a higher risk of infection than those with only indirect contact, such as laboratory technicians and cleaning personnel. In the geriatric ward the risk is possibly slightly higher than in other departments. However, in general risk of infection with HCV for health care workers seems to be low.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01647006
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    Paper (German National Licenses)
    Fulltext
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