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排序方式: 共有153条查询结果,搜索用时 31 毫秒
51.
D. Verney F. Le Blanc L. Cabaret J. Crawford H.T. Duong J. Genevey G. Huber F. Ibrahim M. Krieg J.K.P. Lee D. Lunney J. Obert J. Oms J. Pinard J.C. Putaux B. Roussière J. Sauvage V. Sebastian 《Hyperfine Interactions》2000,127(1-4):79-82
Laser spectroscopy measurements have been performed on neutron deficient iridium isotopes. The hyperfine structure and isotope
shift of the optical Ir I transition 5d76s2
4F9/2 → 5d76s6p 6F11/2 at 351.5 nm have been studied for the 182–189Ir,
and 191,193Ir isotopes. The nuclear magnetic and quadrupole moments were obtained from the HFS measurements and the changes of the mean
square charge radii from the IS measurements. A large mean square charge radius change between 187Ir and 186Ir and between
and
has been observed.
This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献
52.
53.
The behaviour ofS-matrix for potentials generating bound states in continuum in the neighbourhood of the positive bound state energies is studied.
It is shown that unlike the case of usual negative energy bound states, theS-matrix does not have a pole at the positive bound state energy but becomes unity at the energy corresponding to bound states
in continuum. Calculations ofS-waveS-matrix for a local potential constructed by Stillinger and Herrick and a separable nonlocal potential constructed by the
present authors verify these results. Our results indicate that the bound states embedded in continuum constructedvia the von Neumann and Wigner procedure cannot be interpreted as resonances with zero width. 相似文献
54.
55.
J. Sauvage N. Boos L. Cabaret J.E. Crawford H.T. Duong J. Genevey M. Girod G. Huber F. Ibrahim M. Krieg F. Le Blanc J.K.P. Lee J. Libert D. Lunney J. Obert J. Oms S. Péru J. Pinard J.C. Putaux B. Roussière V. Sebastian D. Verney S. Zemlyanoi J. Arianer N. Barré M. Ducourtieux D. Forkel-Wirth G. Le Scornet J. Lettry C. Richard-Serre C. Véron 《Hyperfine Interactions》2000,129(1-4):303-317
Laser spectroscopy measurements have been carried out on very neutron-deficient isotopes of Au, Pt and Ir, produced as daughter
elements from a Hg ISOLDE beam. For these transitional region nuclides, the hyperfine structure (HFS) and isotope shift (IS)
were measured by Resonance Ionization Spectroscopy (RIS). Magnetic moments μ, spectroscopic quadrupole moments Qs and changes of the nuclear mean square charge radius δ〈rc
2〉along isotopic series have been extracted. For some results, a detailed comparison with theoretical predictions is presented.
This revised version was published online in July 2006 with corrections to the Cover Date. 相似文献
56.
Tobias Janoschka Anke Teichler Andreas Krieg Martin D. Hager Ulrich S. Schubert 《Journal of polymer science. Part A, Polymer chemistry》2012,50(7):1394-1407
This work describes the polymerization of the free secondary amine bearing monomer 2,2,6,6‐tetramethylpiperidin‐4‐yl methacrylate (TMPMA) by means of different controlled radical polymerization techniques (ATRP, RAFT, NMP). In particular, reversible addition‐fragmentation chain transfer (RAFT) polymerization enabled a good control at high conversions and a polydispersity index below 1.3, thereby enabling the preparation of well‐defined polymers. Remarkably, the polymerization of the secondary amine bearing methacrylate monomer was not hindered by the presence of the free amine that commonly induces degradation of the RAFT reagent. Subsequent oxidation of the polymer yielded the polyradical poly(2,2,6,6‐tetramethylpiperidinyloxy‐4‐yl methacrylate), which represents a valuable material used in catalysis as well as for modern batteries. The obtained polymers having a molar mass (Mn) of 10,000–20,000 g/mol were used to fabricate well‐defined, radical‐bearing polymer films by inkjet‐ printing. © 2012 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2012 相似文献
57.
Emre GÜZEL Fatih S
NMEZ Sultan ERKAN Kübra IKRIKI Adem ERGÜN Nahit GENER Oktay ARSLAN Makbule B KOAK 《Turkish Journal of Chemistry》2020,44(6):1565
The investigation of carbonic anhydrase and paraoxonase enzyme inhibition properties of water-soluble zinc and gallium phthalocyanine complexes ( 1 and 2 ) are reported for the first time. The binding of p-sulfonylphenoxy moieties to the phthalocyanine structure favors excellent solubilities in water, as well as providing an inhibition effect on carbonic anhydrase (CA) I and II isoenzymes and paraoxonase (PON1) enzyme. According to biological activity results, both complexes inhibited hCA I, hCA II, and PON1. Whereas 1 and 2 showed moderate hCA I and hCA II (off-target cytosolic isoforms) inhibitory activity (Ki values of 26.09 µM and 43.11 µM for hCA I and 30.95 µM and 33.19 µM for hCA II, respectively), they exhibited strong PON1 (associated with high-density lipoprotein [HDL]) inhibitory activity (Ki values of 0.37 µM and 0.27 µM, respectively). The inhibition kinetics were analyzed by Lineweaver–Burk double reciprocal plots. It revealed that 1 and 2 were noncompetitive inhibitors against PON1, hCA I, and hCA II. These complexes can be more advantageous than other synthetic CA and PON inhibitors due to their water solubility. Docking studies were carried out to examine the interactions between hCA I, hCA II, and PON1 inhibitors and metal complexes at a molecular level and to predict binding energies. 相似文献
58.
ar Ceylan KOAK KOAK Süleyman ükriye KARABBEROLU Zekerya DURSUN 《Turkish Journal of Chemistry》2020,44(1):125
Dimethylamine borane (DMAB) is a promising fuel alternative for fuel cell applications. In this work cyclic voltammetric behavior of DMAB was investigated on the polymerized aminophenol film decorated with Ag nanoparticles in alkaline media. The polymer film was formed on the glassy carbon electrode by electrochemical technique and then, the surface was modified with Ag nanoparticles. The surface of the modified electrode was identified by scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, and electrochemical impedance spectroscopy techniques. The developed electrode has displayed high electrocatalytic activity for DMAB oxidation in alkaline media depending on the supporting electrolyte concentration. Experimental parameters such as cycle number used in electropolymerization of p-aminophenol, deposition of Ag nanoparticles and supporting electrolyte were optimized. 相似文献
59.
Aloys Krieg 《Results in Mathematics》1994,25(3-4):339-340
In this paper we give an elementary proof on the range of convergence of Epstein zeta functions. 相似文献
60.