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  • Polymer and Materials Science  (2)
  • Senescence  (2)
  • hyperfine structure  (2)
  • Bewegungssystem  (1)
  • 1
    ISSN: 1432-2048
    Schlagwort(e): Apical senescence ; Gibberellins ; Photomorphogenesis ; Pisum ; Senescence
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract In an early-flowering line of pea (G2) apical senescence occurs only in long days (LD), while growth in short days (SD) is indeterminate. In SD, G2 plants are known to produce a graft-transmissible substance which delays apical senescence in related lines that are photoperiod-insensitive with regard to apical senescence. Gibberellic acid (GA3) applied to the apical bud of G2 plants in LD delayed apical senescence indefinitely, while N6-benzyladenine and α-naphthaleneacetic acid were ineffective. Of the gibberellins native to pea, GA9 had no effect whereas GA20 had a moderate senescence-delaying effect. [3H]GA9 metabolism in intact leaves of G2 plants was inhibited by LD and was restored by placing the plants back in SD. Leaves of photoperiod-insensitive lines (I-types) metabolized GA9 readily regardless of photoperiod, but the metabolites differed qualitatively from those in G2 leaves. A polar GA9 metabolite, GAE, was found only in G2 plants in SD. The level of GA-like substances in methanol extracts from G2 plants dropped about 10-fold after the plants were moved from SD to LD; it was restored by transferring the plants back to SD. A polar zone of these GA-like materials co-chromatographed with GAE. It is suggested that a polar gibberellin is synthesized by G2 plants in SD; this gibberellin promotes shoot growth and meristematic activity in the shoot apex, preventing senescence.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    ISSN: 1432-2048
    Schlagwort(e): Apical senescence ; Pisum ; Photomorphogenesis ; Grafting ; Growth regulators ; Senescence
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Apical senescence in an early flowering line of pea, G2, is greatly delayed by short days. This behavior is controlled by two dominant genes. Apical senescence of ungrafted, insensitive (I) lines is unaffected by photoperiod. When I-type scions with one of the two required genes were grafted onto G2, apical senescence of the I-type was delayed in short days, but not in long days. Flowering of the I-type was unaffected. The apex of the G2 stock was unaffected as well. Apical senescence of an I-type line lacking both photoperiod genes was not delayed when grafted on G2 in short days. It is concluded that G2 plants grown in short days produce a graft-transmissible factor which delays apical senescence of photoperiodically insensitive lines.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    ISSN: 1572-9540
    Schlagwort(e): hyperfine structure ; $$\user1{g}$$ factor ; barium ; europium
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Paul and Penning ion traps have been used to determine hyperfine structure coupling constants as well as nuclear $$\user1{g} $$ factors of Ba+ ions with great precision. Attempts are under way to measure both quantities for a long chain of Eu isotopes in order to determine differential hyperfine anomalies for a better understanding of the Bohr–Weisskopf effect.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 4
    ISSN: 1572-9540
    Schlagwort(e): ion-trap ; hyperfine structure ; 7Be ; laser cooling
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract In order to investigate the nuclear magnetic moments and the magnetization distributions in the unstable nuclei of 7,11Be, laser-microwave spectroscopy experiments using an ion-trap are under progress at IPNS, KEK-Tanashi. Status of the experiment for the first unstable isotope 7Be is reported.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 5
    Digitale Medien
    Digitale Medien
    Springer
    Manuelle Medizin 38 (2000), S. 342-345 
    ISSN: 1433-0466
    Schlagwort(e): Schlüsselwörter Kraniomandibularsystem ; Bewegungssystem ; Testverfahren aus manueller Medizin ; Chirotheraphie ; Osteopathie ; Effekte kieferorthopädischer/zahnärztlicher Therapie ; Keywords Craniomandibular system ; Musculoskeletal system ; Testing methods manual medicin ; Chirotherapy ; Osteopathy ; Effects of dental therapy
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Beschreibung / Inhaltsverzeichnis: Abstract The craniomandibular system has an outstanding position within the musculoskeletal system. This is widely accepted by manual medicine, chirotherapy and osteopathy. Craniomandibular dysfunction has dominant effects on the musculoskeletal system (primary lesion). Five testing methods of manual medicine are described for examining this influence rapidly and reproducibly. In the same way, dentists can check to see whether their therapy has any negative influence on the musculoskeletal system with regard dysfunction or a positive influence on regular function.
    Notizen: Zusammenfassung Das kraniomandibuläre System hat innerhalb des muskuloskeletalen Systems eine Sonderstellung. Von der manuellen Medizin, der Chirotherapie und Osteopathie wird das allgemein akzeptiert. Funktionsstörungen aus diesem System wirken sich dominant auf das Bewegungssystem aus (primäre Läsion). Beschrieben werden 5 bewährte Testverfahren aus der manuellen Medizin, die diese Störeinflüsse schnell und exakt reproduzierbar nachweisen. Entsprechend lassen sich kieferorthopädische und zahnärztliche Aufbissbehelfe und Bissnahmen prüfen. Verursachen sie bei den beschriebenen Testverfahren keine pathologischen Ergebnisse, so können sie als funktionsgerecht gelten.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 6
    Digitale Medien
    Digitale Medien
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 37 (1986), S. 101-102 
    ISSN: 0947-5117
    Schlagwort(e): Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Maschinenbau
    Notizen: Detection of selective corrosion on stainless steel material no 1.4306 by radioisotope methods
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 7
    Digitale Medien
    Digitale Medien
    Chichester [u.a.] : Wiley-Blackwell
    Surface and Interface Analysis 5 (1983), S. 235-238 
    ISSN: 0142-2421
    Schlagwort(e): Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Physik
    Notizen: For the description of reactions between solids and gases it is important to investigate the compositional changes in the surface of the solid as a function of temperature and reaction time. Conventional methods of surface analysis cannot be applied in such investigations under atmospheric pressure. We have used the techniques of thermal analysis by emission spectrography (TESG) and of X-ray photoelectron spectroscopy (ESCA). Work with aggressive gases under atmospheric pressure was done in a special reactor, connected by a vacuum-lock directly to the ESCA spectrometer. Thus we have been able to establish characteristic reaction temperatures in the BCl3/H2/steel system and to assign them to certain surface changes. From that a model for the initial phase of the formation of the boride layer on a plain carbon steel has been derived.
    Zusätzliches Material: 1 Ill.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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