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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 96 (1992), S. 199-206 
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1434-601X
    Keywords: 21.10.−k ; 27.20.+n ; 25.70.Np ; 21.10.Re
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Total interaction cross sections have been measured for8Li on C and Pb targets, for9Li on C, Al, Cu, Sn and Pb targets as well as for11Li on C, Sn and Pb targets. For each beam, we also used a plastic scintillator as target. The measurements with the scintillator targets are used to extract reduced nuclear radii of the lithium isotopes. These radii are then used for the calculation of the nuclear part of the total cross section for the other targets. The total electromagnetic-dissociation (EMD) cross sections have been deduced and are compared to different models. A strong target-charge-dependent EMD cross section is measured for11Li reaching 2.96 −0.82 +0.84 b for the Pb target. In the9Li case, a large EMD cross section for high-Z targets has been observed which amounts to 0.75 ± 0.45 b for the Pb target. The EMD cross sections of both,9Li and11Li, may be understood by the giantdipole-resonance model.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Zeitschrift für Gerontologie + Geriatrie 33 (2000), S. 488-494 
    ISSN: 0044-281X
    Keywords: Schlüsselwörter¶Pflegebedürftigkeit –¶Pflegestufenzuerkennung –¶Skalenvalidierung – Clusteranalyse – Syndromspezifität ; Key words Care needs –¶stages of care –¶Pflegeversicherungsgesetz –¶scale validation – cluster analysis –¶syndrome evidence
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary The object of our study is the evaluation of care needs of senior citizens and the adjustment of certain stage of care according to the German Health Care Act (“Pflegeversicherungsgesetz”). For assessment of care needs we developed a new rating scale (BPS). Factor analysis of the rating scale showed 5 dimensions: (1) “Psychoorganic Syndrome” (Dementia), (2) “Physical Care Needs”, (3) “Lack of Social Skills”, (4) “Aggressiveness” and (5) “Depression”. The sample size is N=1739, mean age 82.5 years. A statistically significant partial correlation of the extent of care needs as indicated by the stage of care described by BPS dimensions was found only for dimension (2) “Physical Care Needs” (r=0.50). Cluster analysis resulted in distribution of the whole sample into 6 discriminable groups, according to their syndrome specifity (BPS profiles). Additionally clusters are different regarding the severity of need for care. It is obvious, analyzing the adjustment of stages of care within clusters, that psychiatric relevant disturbances contribute substantially to this adjustment. Nevertheless this finding is valid only for aged people, who receive regular care by ambulant or home services, and can not be transfered to senior citizens cared by their families.
    Notes: Zusammenfassung Gegenstand der Studie ist die Zuerkennung von Pflegestufen nach dem Pflegeversicherungsgesetz. Der Pflegebedarf wurde mit dem Beurteilungsbogen zur Pflegebedürfigkeit von Senioren (BPS) abgeschätzt, der im Rahmen dieser Studie entwickelt wurde. Anonymität war sowohl bezüglich der Beurteiler als auch der beurteilten Personen gewährleistet. In die Studie konnten die Beurteilungen über N=1739 Senioren einbezogen werden, das Durchschnittsalter lag bei 82,5 Jahren. Die Entwicklung des Fremdbeurteilungsbogens BPS wird kurz beschrieben. Erfasst werden damit die faktorenanalytisch gesicherten Dimensionen (1) „Psychoorganisches Syndrom”, (2) „Körperbezogene Pflegebedürftigkeit”, (3) „Störungen der sozialen Kompetenz”, (4) „Aggressivität” und (5) „Depressivität”. Ein bedeutsamer Zusammenhang zwischen Pflegebedürftigkeit und Pflegestufenzuerkennung konnte lediglich für die Merkmalsausprägung auf der Skala (2) „Körperbezogene Pflegebedürftigkeit” mit einer Partialkorrelation von r=0,50 belegt werden. Mit Hilfe einer Clusteranalyse gelang die Aufteilung der Stichprobe in 6 Gruppen, für die gut beschreibbare Syndromprofile (BPS-Skalenprofile) gelten. Zugleich unterscheiden sich diese Gruppen graduell in ihrem Pflegebedarf. Eine Analyse der Pflegestufenzuerkennung in diesen Clustern ergab, dass auch psychische Beeinträchtigungen in der Pflegestufenzuerkennung Berücksichtigung finden. Gleichwohl gilt dies nur für den in die Studie einbezogenen Personenkreis der institutionell betreuten Senioren.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1617-4623
    Keywords: Key words Group C streptococci ; Group G streptococci ; Multigene regulator ; Streptokinase gene ; Streptococcus dysgalactiae subsp. equisimilis ; M protein gene
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract In addition to β-haemolytic streptococci belonging to Lancefield group A (Streptococcus pyogenes, GAS), human isolates of group C (GCS) and group G (GGS) streptococci (S. dysgalactiae subsp. equisimilis) have been implicated as causative agents in outbreaks of purulent pharyngitis, of wound infections and recently also of streptococcal toxic shock-like syndrome. Very little is known about the organisation of the genomic region in which the emm gene of GCS and GGS is located. We have investigated the genome sequences flanking the emm gene in GCS by sequencing neighbouring fragments obtained by inverse PCR. Our sequence data for GCS strains 25287 and H46A revealed two types of arrangement in the emm region, which differ significantly from the known types of mga regulon in GAS. We named this segment of the genome mgrC (for multigene regulon-like segment in group C streptococci). In strains belonging to the first mgrC type (prototype strain 25287) the emm gene is flanked upstream by mgc, a gene that is 61% identical to the mga gene of GAS. A phylogenetic analysis of the deduced protein sequences showed that Mgc is related to Mga proteins of various types of GAS but forms a distinct cluster. Downstream of emm, the mgrC sequence region is bordered by rel. This gene encodes a protein that functions in the synthesis and degradation of guanosine 3′,5′ bipyrophosphate (ppGpp) during the stringent regulatory response to amino acid deprivation. In the second mgrC type (prototype strain H46A), the genes mgc and emm are arranged as in type 1. But an additional ORF (orf) is inserted in opposite orientation between emm and rel. This orf shows sequence homology to cpdB, which is present in various microorganisms and encodes 2′,3′ cyclo-nucleotide 2′-phosphodiesterase. PCR analysis showed that these two mgrC arrangements also exist in GGS. Our sequence and PCR data further showed that both types of mgrC region in GCS and GGS are linked via rel to the streptokinase region characterised recently in strain H46A. A gene encoding C5a peptidase, which is present at the 3′ end of the mga regulon in GAS, was not found in the mgrC region identified in the GCS and GGS strains investigated here.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1434-601X
    Keywords: 25.70.Gh ; 35.10.Bg
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract In the fusion reactions90Zr(89Y,p)178Pt and90Zr(89Y,α)175Ir the sum energy of all emittedγ rays as well as the energy of the promptly emitted charged particle were measured. From these data the mass-excess values for the evaporation residues178Pt and175Ir were extracted to beΔ(178Pt)=(−32.4±1.1)MeV/c2 andΔ(175Ir)=(−32.0±1.2) MeV/c2. The method provides absolute mass values for nuclides far from stability which can be produced in fusion reactions as evaporation residues in the 1p or 1α channel. The sources of the experimental uncertainties of the method are discussed, and the potential for considerable improvements is outlined.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1434-601X
    Keywords: 25.70.Np
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The longitudinal-momentum distributions of projectile fragments from 0.8 A GeV136Xe and 1 A GeV197Au projectiles impinging on targets of beryllium and aluminium, respectively, have been measured using the projectile-fragment separator FRS at GSI. Different momentum distributions have been found for two different classes of fragmentation processes: the abundant hot fragmentation with several nucleons evaporated from the prefragments, and the rare cold fragmentation with only protons removed from the projectile, but no nucleons evaporated. The data are compared to model calculations.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1434-601X
    Keywords: 25.70.Ji
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Excitation functions in the vicinity of the Coulomb barrier have been measured for the formation of evaporation residues in100Mo-induced fusion reactions with90, 92, 96Zr,92, 96, 98, 100Mo,104Ru and110Pd as well as for the system96Zr+96Zr. From these data the fusion probability in central collisions was extracted covering a range of 4 orders of magnitude. At the fusion barriers expected from systematics we find that the fusion probability is suppressed by one to three orders of magnitude. It is rising very gradually at higher energies and reaches for the heaviest systems saturation only at energies as high as 30 MeV above the barrier. The observed hindrance of the fusion process increases roughly with the growing Coulomb repulsion between the collision partners, but there is also a distinct influence of their individual nuclear structure. The data are compared to the extra-push model, the surface-friction model and the diabatic fusion model. A parameterisation of the extra-push energy and its fluctuation in terms of a macroscopic quantity like the Coulomb repulsion combined with a microscopic quantity characterizing the nuclear structure is proposed. As a byproduct of this work a new alpha emitter,191Po, could be identified. Its half-life is (15.5 −2.5 +6 ) ms, the alpha energy is (7314±20) keV.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1434-601X
    Keywords: 21.10.MA ; 25.70.Gh ; 27.70.+q
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract For the compound nucleus179Au formed at an excitation energy of 26 MeV in the fusion reaction90Zr+89Y, the energy spectra of promptly emitted protons,α particles andγ rays were measured in concidence with the evaporation residues. On the basis of the measured total decay energy, the 1p and 1α decay channels were separated from all other evaporation-residue channels. The energy spectra and absolute cross sections, together with previously measured excitation functions for various decay channels, are successfully described by statisticalmodel calculations with the Monte Carlo code CODEX.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1434-601X
    Keywords: 25.70.Jj ; 25.70.Gh ; 27.90.+b
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The fusion of the massive systems110Pd+104Ru and110Pd+110Pd was uniquely identified by observing the a decay of the evaporation residues. The observed distribution of the fusion cross section on the different evaporation-residue channels is in clear contradiction to calculations based on the compound-nucleus model. As a possible explanation the precompound evaporation of a particles is proposed.
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1434-601X
    Keywords: 21.10.−k ; 27.20.+n ; 25.70.Np ; 21.10.Re
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Total charge-changing cross sections have been measured for8Li on C and Pb targets, for9Li on C, Al, Cu, Sn and Pb targets, as well as for11Li on C, Sn and Pb targets at about 80 MeV/nucleon. These data are compared to measured total reaction cross sections and Glauber-type calculations using Hartree-Fock density distributions. These comparisons allow to draw conclusions on the proton density distribution of the neutronrich lithium isotopes. The results show that even for the most exotic nucleus11Li the proton distribution is only very weakly influenced by the long tail in the neutron density distribution already established in several experiments.
    Type of Medium: Electronic Resource
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