[en] Polarization observables convenient for investigations of each spin dependent interaction are discussed in elastic scattering of deuterons at intermediate energies, by the invariant-amplitude method. The T_L-type tensor like effects of the LS interaction and contributions of a phenomenological T_L-type tensor one are examined. (author)

[en] Spin-dependent interactions responsible for vector analyzing powers in elastic scattering of ^6,7Li are investigated with a special interest in the competition between folding spin-orbit potentials and higher orders of tensor interactions including projectile virtual excitations. For 150 > approx E_lab > approx 40 MeV, they are both important. For E_lab < approx 20 MeV, however, the folding spin-orbit potential cannot be effective because the attenuation due to the projectile excitation and/or the Coulomb barrier prevent the projectile from intruding into the spin-orbit effective area. (author)

[en] Relationships between second-rank tensor analyzing powers are derived by the invariant-amplitude method for elastic scattering of spin 1 and 3/2 particles. They explain a characteristic feature of A_yy, A_xx and A_xz measured in the scattering of deuterons. Analyzing powers of ⁶Li scattering by four-channel calculations are found to satisfy the relation. The relationship formulae are applied to experimental data on T₂₀, T₂₁ and T₂₂ in scattering of ⁷Li by ⁵⁸Ni with success. The theory is extended to third-rank tensor analyzing powers. (author)

[en] Published in summary form only

[en] Scattering of ⁷Li by ¹²⁰Sn targets at E_lab = 44 MeV is investigated in the coupled-channel frame by taking account of the projectile virtual excitations to the lowest three excited states. Calculations are performed by the cluster-folding (CF) interactions and the double-folding (DF) one. Both interactions reproduce very well the expeimental data on the cross section, the vector analyzing power, the second-rank tensor ones and the third-rank tensor one in elastic and projectile inelastic scattering, although some differences are found between the CF results and the DF ones. In the calculation, the virtual excitations of the projectile are important for most of the analyzing powers and the spin-orbit interaction is indispensable for the vector analyzing power. These features are in contrast to those in ⁷Li - ⁵⁸Ni scattering at 20 MeV and are interpreted as over-Coulomb-barrier effects. The scattering amplitudes and the analyzing powers are investigated by the invariant amplitude method, which provides a key connecting the spin-dependent interactions to the analyzing powers. The method proposes an important relationship between the tensor analyzing powers, which is useful in analyses of both theoretical and experimental results. Finally, it is found that in the elastic scattering the second-rank tensor analyzing powers are proportional to the strength of the second-rank tensor interaction and the vector and third-rank tensor analyzing powers to the square or cube of the strength of this interaction, while in the inelastic scattering the cross section is proportional to the square of the strength of the tensor interaction, other quantities being weakly dependent on the strength. (author)

No abstract available

[en] Purified human urokinase was labeled with either fluorescein isothiocyanate or iodine-125 and used as a probe for binding to the human metastatic carcinomatous cell line, Detroit 562. Cytofluorometry showed that the ligand bound preferentially to cells that had been exposed to acidic pH. The binding was competitive and decreased after mild tryptic digestion. The bound ligand could be removed by restoration of the cells to a low pH. Therefore, the cells had specific binding sites. The bound urokinase was involved in the breakdown of fibrin. Two-color cytofluorometric maps were constructed by counterstaining with propidium iodide. Results suggested that there were different cell populations that had different numbers of receptors and amounts of DNA. We cloned cells and found that single clones had homogeneous levels of receptors with different dissociation constants (from 10(-13) to 10(-11) mol/mg protein) for different clones. Cells of one clone, C5, which had high levels of receptor production, moved characteristically on a glass substratum coated with gold particles and reacted with wheat germ agglutinin, but not with concanavalin A. The receptors were found together with adhesion proteins at the sites where the cells adhered to the substrate. These results and the data obtained by zymography of the cellular proteins suggested that the urokinase-type plasminogen activators were bound to the receptors. The membrane-associated activator may stimulate local proteolysis, facilitating the migration of the tumor cell across the substrate

[en] Isotope dependence of vector analyzing powers of polarized deuterons in elastic scattering off Se targets is discussed by optical-model and coupled-channel calculations. Attention is particularly directed to relations between analyzing power and imaginary potential. (Auth.)

[en] New linear combinations of vector and tensor analyzing powers in elastic scattering of deuterons are proposed to identify separately individual effects of spin-dependent interactions between the deuteron and 0⁺ target nuclei. Particularly, one of them, T sub(ST) is shown to be sensitive to the T sub(R)-type tensor potential. An application to analyses of experimental data proves real contributions of the tensor potential. (author)

[en] Wave functions of deuteron breakup states are calculated from Reid soft core potential. They are used in coupled-discretized-continuum-channels calculations for deuteron elastic scattering. Effects of tensor potentials in the p-n interaction of the breakup states appears mainly in tensor analyzing powers. (author)