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  • 1
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Properties ofD mesons produced in the photo-production experiment NA 14/2 at CERN are reported. The following ratios of branching fractions were measured: $$\begin{gathered} Br(D^0 \to K^ + K^ - )/Br(D^0 \to K^ - \pi ^ + ) = 0.16 \pm 0.05, \hfill \\ Br(D^0 \to K^ - \pi ^ + \pi ^0 )/Br(D^0 \to K^ - \pi ^ + ) = 4.0 \pm 0.09 \pm 1.0, \hfill \\ Br(D^0 \to K^ - \pi ^ + \pi ^ + \pi ^ - )/Br(D^0 \to K^ - \pi ^ + ) \hfill \\ = 1.9 \pm 0.25 \pm 0.20 \hfill \\ \end{gathered} $$ . TheD 0→K − π + π + π − decay was analysed and the contribution of resonant subprocesses found consistent with 1ρ 0 and 0.23 $$\bar K$$ *0 per event. The angular distributions ofD 0→ $$\bar K$$ *0 showed parity violation and destructive interference betweenS- andD-waves. From a Dalitz-plot analysis of the decayD +→K − π + π + the contribution from the quasi two-body decayD +→ $$\bar K$$ *0 π + was measured to be 0.14±0.04±0.04.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 14 (1971), S. 1-6 
    ISSN: 1434-6036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract An account is given of a variational calculation to estimate the amplitudes of resonance factorsɛ in a recent theory to describe the enhancement of crystalline field potentials by conduction electrons in heavy rare earth metals. It is demonstrated that the values ofɛ obtained by minimising the energy of interaction between conduction electrons and rare earth ions are consistent with those previously used to form a comparison with experiment. These latter values were obtained by maximising theA 2 0 crystal field coefficient with respect toɛ. Consistency is exhibited in both the sign and order of magnitude of the resonance amplitudes and renders the theory parameterless. The values ofɛ show an approximate linear dependence with the number of electrons in the incompletef shell of the rare earth ions.
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 43 (1987), S. 784-790 
    ISSN: 1420-9071
    Keywords: Prohormone processing ; regulatory peptides ; precursors ; proteolytic enzymes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Precursors to regulatory peptides undergo maturation processes which include protelytic processing. The enzymes involved in this process remove the hydrophobic peptide located at the amino-terminus of the precursor. Endoprotease cleavage also occurs at single and two adjacent basic residues, this is followed by a removal of basic residues located at the C-terminus of the peptides by a carboxypeptidase-like enzyme.
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 27 (1971), S. 1065-1066 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Résumé Les nerfs de la submuqueuse de l'urêtre des Rongeurs examinés contiennent de la monoamine. Les uns accompagnent les vaisseaux sanguins, d'autres en sont indépendants. Ils ne s'étendent pas au delà de la couche inférieure de l'épithélium. Les cellules ganglionnaires et chromaffines semblent manquer. Le rôle possible des nerfs contenant de la catécholamine sans être reliés à un élément effecteur est discuté.
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 32 (1976), S. 377-378 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Histochemical and electron microscopic techniques have been used to study the nature and distribution of fluorescent, endocrine-like cells in the urethra of the human male and female. The confinement of such cells to specific regions of the urethra is discussed in relation to the embryological development of this part of the urinary tract.
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 32 (1976), S. 1052-1053 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Using a fluorescence technique numerous developing noradrenergic nerve terminals were observed in the muscle coat of the rat ductus deferens, between 2 and 6 days postpartum. In the electron microscope similar developing nerve terminals possessed an extensive system of tubular endoplasmic reticulum but did not contain the small dense cored vesicles characteristic of mature noradrenergic nerve terminals. Thus the tubular reticulum is proposed as an alternative storage site for noradrenaline in developing adrenergic nerves.
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Communications in mathematical physics 171 (1995), S. 459-473 
    ISSN: 1432-0916
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Notes: Abstract We examine the BRS cohomology of chiral matter inN=1,D=4 supersymmetry to determine a general form of composite superfield operators which can suffer from supersymmetry anomalies. Composite superfield operators Ψ(a, b) are products of the elementary chiral superfieldsS and $$\bar S$$ and the derivative operatorsD α, $$D_\alpha ,\bar D_{\dot \beta } $$ and $$\partial _{x\dot \beta } $$ . Such superfields Ψ(a, b) can be chosen to have “a” symmetrized undotted indices α i and “b” symmetrized dotted indices $$\dot \beta _j $$ . The result derived here is that each composite superfield Ψ(a,b) is subject to potential supersymmetry anomalies ifa−b is an odd number, which means that Ψ(a,b) is a fermionic superfield.
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  • 8
    ISSN: 1573-0832
    Keywords: Coccidioidomycosis ; Coccidioides immitis ; pulmonary ; systemic ; cutaneous ; micro-immunodiffusion ; complement fixation ; human ; animal ; distrubution
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The first Canadian case of coccidioidomycosis in a human was reported in 1952 and 11 more cases since then. This study provides details of other cases of coccidioidomycosis that have been diagnosed in Canada. Based on clinical details, isolation of Coccidioides immitis, detection of a specific antibody (F band) for coccidioidomycosis by macro- or microimmunodiffusion tests, concurrently used with the complement fixation procedure, and histopathological findings, 116 more cases of this disease were verified. The great majority (94%) of these cases were diagnosed in the western Canadian provinces of British Columbia, Alberta, Saskatchewan and Manitoba, and the others in Quebec, Ontario and Nova Scotia (5,1, and 1 cases, respectively). Available information indicates that the C. immitis infections were contracted during visits to endemic areas in the United States (Arizona, California and New Mexico), Mexico, and Bolivia. Pulmonary infections were the most common type of coccidioidomycosis (93%) followed by the disseminated or meningeal types C. immitis infections occurred in individuals with or without predisposing factor(s) and were more common in males than in females. The exoantigen procedure was very useful and reliable in the accurate and rapid identification of suspected C. immitis isolates. Two cases of coccidioidomycosis were reported in animals in Ontario, Canada.
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 41 (1985), S. 1332-1335 
    ISSN: 1420-9071
    Keywords: Thiol ; protein disulfide oxidoreductase (TPOR) ; insulin ; disulfides ; high performance liquid chromatography (HPLC)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary A thiol:protein disulfide oxidoreductase from bovine liver was isolated after separation from protein disulfide isomerase. The enzyme, after activation (reduction) with glutathione, was reacted with stoichiometric amounts of insulin and the sulfhydryl groups of the partially reduced hormone were labeled with iodo (l-14C)acetamide. After separation of the insulin chains, the radioactivity was found in both the peptides, with a ratio A-chain/B-chain equal to 2/1.
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Communications in mathematical physics 139 (1991), S. 495-526 
    ISSN: 1432-0916
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Notes: Abstract A method for finding the general form of the BRS cohomology spaceH for the various gauge and supersymmetry theories is presented. The method is adapted for use in the space of integrated local polynomials of the gauge fields and ghosts with arbitrary numbers of fields and dervivatives. The technique uses the Hodge decomposition in a Fock space with a Euclidean inner product, and combines this with spectral sequences to generate simple and soluble equations whose solutions span a simple spaceE ∞ isomorphic to the complicated spaceH. The technique is illustrated for pedagogic purposes by the detailed calculation of the ghost charge zero and one sectors ofH for Yang-Mills theory with gauge groupSO (32) in ten dimensions. The method is appropriate for supersymmetric theories, gravity, supergravity and superstrings where higher order terms with many derivatives occur naturally in the effective action.
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