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  • 1
    Digitale Medien
    Digitale Medien
    In situ activated T lymphocytes in active versus stable periodontal lesions (1988)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of periodontal research 23 (1988), S. 0 
    Details
    ISSN: 1600-0765
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: A double labeling technique was developed to detect T cell phenotype and HLA-DR (activation) antigens on infiltrating cells in gingival biopsy sites classified as either periodontally active (≥ mm attachment loss within past 3 months), clinically similar but stable, or healthy. Serial cryostat sections were obtained from each of the above disease category biopsies in 13 periodontal maintenance patients, and were processed with sequential Leu series (T cell subsets) avidinbiotin-peroxidase followed by anti-HLA-DR indirect alkaline phosphatase labeling protocols. Labeled cells were counted in repeatable fields in the sulcular, middle and oral thirds of each section, and HLA-DR+ T cells (activated) were calculated. Total HLA-DR-labeled cells and HLA-DR-positive pan-T cells and T helper cells (Th) were all more numerous in active specimens than in healthy sites (p〈0.05), and in sulcular fields than in the oral third of the section (p〈0.05). Although activated T suppressor cell (T5) densities did not vary statistically according to tissue location, active biopsies had more cells per field than either stable or healthy specimens (p〈0.05), especially in the sulcular third. A majority of pan-T, Ts and Th cells appeared to display activation markers in active, stable and healthy biopsies. This study supports the functional role of T lymphocytes in modulating the immune response in periodontal tissues.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1600-0765.1988.tb01420.x
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  • 2
    Digitale Medien
    Digitale Medien
    Non yrast spectroscopy with the (α, n) reaction at the coulomb barrier (1984)
    Springer
    The European physical journal 315 (1984), S. 77-79 
    Details
    ISSN: 1434-601X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract About 50 states with spins ≦8ħ in128Xe have been populated by means of the125Te (α, n) reaction at projectile energies near the Coulomb barrier. In particular eight 2+ or (1,2+) states have been observed. The (α, n) reaction at particle energies near the Coulomb barrier seems to be a powerful tool to by-pass the strong selectivity for the yrast states in normal (HI, xn) reactions.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01436211
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  • 3
    Digitale Medien
    Digitale Medien
    Excited states in124Xe (1984)
    Springer
    The European physical journal 318 (1984), S. 123-124 
    Details
    ISSN: 1434-601X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Excited states of124Xe have been investigated via the122Te(α, 2n),114Cd(13C, 3n) and108Pd(19F, p2n) reactions using in-beam gamma-ray and electron spectroscopy methods. 36 new levels and several spin and parity assignments were established, revealing the existence of at least one positive parity superband and two negative parity bands, one of them showing backbending.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02117224
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  • 4
    Digitale Medien
    Digitale Medien
    On the parity of the yrast 8+ level in138Ce and an anomaly in theB(E2) values (1984)
    Springer
    The European physical journal 318 (1984), S. 195-197 
    Details
    ISSN: 1434-601X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract On the basis of conversion electron andγ-angular distribution measurements new spin and parity assignments in138Ce have been made. They lead together with the already known lifetime of the 10+ yrast state whose parity was unclear to an extremely low transition probability of the 10+→8+ transition. A comparison with neighbouring even isotopes is made.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01413468
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  • 5
    Digitale Medien
    Digitale Medien
    Properties of an anion-selective channel from rat colonic enterocyte plasma membranes reconstituted into planar phospholipid bilayers (1987)
    Springer
    The journal of membrane biology 95 (1987), S. 47-54 
    Details
    ISSN: 1432-1424
    Schlagwort(e): intestine ; epithelial transport ; chloride channels ; selectivity ; inactivation ; bilayer reconstitution
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Chemie und Pharmazie
    Notizen: Summary Vesicles derived from epithelial cells of the colonic mucosa of the rat were fused to planar phospholipid bilayer membranes, revealing spontaneously switching anion-conducting channels of 50 pS conductance (at-30 mV with 200mm Cl− each side). The equilibrium selectivity series was I− (1.7)/Br− (1.3)/Cl− (1.0)/F− (0.4)/HCO 3 − (0.4)/Na (〈0.11.). Only one dominant open-state conductance could be resolved, which responded linearly to Cl− concentrations up to 600mm. The singlechannel current-voltage curve was weakly rectifying with symmetrical solutions. When 50 mV were exceeded at the highconductance branch of the curve, switching was arrested in the closed state. At more moderate voltages (±40 mV) kinetics were dominated by one open state of about 35-msec lifetime and two closed states of about 2 and 9-msec lifetime. Of these, the more stable closed state occurred less often. At these voltages one additional closed state of significantly longer lifetime (〉0.5 sec) was observed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01869629
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  • 6
    Digitale Medien
    Digitale Medien
    Single channel conductance of monazomycin (1980)
    Springer
    European biophysics journal 6 (1980), S. 80-80 
    Details
    ISSN: 1432-1017
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Physik
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00647552
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  • 7
    Digitale Medien
    Digitale Medien
    Infektion (1937)
    Springer
    Journal of cancer research and clinical oncology 45 (1937), S. 188-195 
    Details
    ISSN: 1432-1335
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01638952
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  • 8
    Digitale Medien
    Digitale Medien
    Plasma-chemical reactions in weakly decomposed CCl4 (1985)
    Springer
    Plasma chemistry and plasma processing 5 (1985), S. 293-316 
    Details
    ISSN: 1572-8986
    Schlagwort(e): Plasma chemistry ; halocarbon decomposition ; kinetics
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Maschinenbau , Technik allgemein
    Notizen: Abstract For the case of weak feed gas decomposition, where the concentration of CCl4 exceeds those of decomposition and built-up products, the emission of CCl* is shown to originate from dissociative excitation of CCl4. With electron concentration measured independently, the kinetics of CCl4 decomposition has been extracted from the time dependence of the CCl* intensity. Supported by EPR determinations of radical concentrations in rapidly flowing CCl4 and CCl4/O2 afterglows, the primary decomposition reaction is shown to be the electron impact dissociation into CCl3 and Cl. Its rate constant (k 1=4×10−8 cm3s−1) indicates strongly that dissociative electron attachment is the main reaction channel at least at r.f. power densities just above the threshold of a self-maintaining discharge. At extremely low mean electron energies the emission of a continuum is observed, which is tentatively ascribed to the radiative CCl3-Cl recombination.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00566006
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  • 9
    Digitale Medien
    Digitale Medien
    Ätiologie und Pathogenese (1937)
    Springer
    Journal of cancer research and clinical oncology 45 (1937), S. 92-98 
    Details
    ISSN: 1432-1335
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01619039
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  • 10
    Digitale Medien
    Digitale Medien
    Discontinuous reversed-phase high performance liquid chromatography increases load capacity of analytical columns. Separation of ribosomal proteins from the archaebacteriumSulfolobus acidocaldarius (1988)
    Springer
    Chromatographia 25 (1988), S. 189-198 
    Details
    ISSN: 1612-1112
    Schlagwort(e): Discontinuous reversed-phase HPLC ; Ribosomal proteins of archaebacteriumSulfolobus acidocaldarius ; Load capacity for proteins ; Protein separation ; Protein sequencing
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Summary Since ribosomes are a fundamental feature component of all organisms, they present a good model for studying evolutionary diversity. We investigated the ribosomal proteins of the archaebacteriumSulfolobus acidocaldarius, which contains slightly more ribosomal proteins thanEscherichia coli. While the ribosomal proteins of most organisms contain a high proportion of lysine and arginine residues, these basic amino acids are particularly prevelent in the thermaacidophile organismSulfolobus, a possible reason for poor separations of total ribosomal proteins ofS. acidocaldarius by single column HPLC. To solve this complex separation problem, we developed the discontinuous reversed-phase HPLC (Disc RPC) method. Discontinuus chromatography combines at least two different stationary phases in a sequence of increasing retention times for the elution of proteins. Unlike other multi-column techniques, all of the injected sample passes through this discontinous stationary phase, which is used in place of single columns, thus permitting separations to be carried out without the need any changes in the HPLC system. Here we present Disc RPC separations of 30S ribosomal proteins fromS. acidocaldarius with a variety of stationary phases of different legnths and diameters. Each of five Disc RPC categories presented in this paper has some special application possibilities when used in protein HPLC.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02316443
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