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961.
962.
963.
K. Matsuta A. Ozawa Y. Nojiri T. Minamisono M. Fukuda S. Momota T. Ohtsubo S. Fukuda K. Sugimoto I. Tanihata K. Yoshida K. Omata J. R. Alonso G. F. Krebs T. J. M. Symons 《Hyperfine Interactions》1993,78(1-4):123-126
NMR on the beta emitter43Ti has been observed by use of the -NMR technique. From the observed NMR spectrum, the magnetic moment of43Ti was determined to be || =0.85±0.02 µN. The value is significantly quenched from the single particle value –1.91 µN, which shows a strong effect resulting from meson-exchange currents andconfiguration mixing. 相似文献
964.
T. Minamisono T. Ohtsubo I. Minami A. Kitagawa S. Fukuda Y. Nakayama M. Fukuda K. Matsuta Y. Nojiri S. Takeda H. Sagawa H. Kitagawa 《Hyperfine Interactions》1993,78(1-4):165-168
The nuclear quadrupole moment of8B(I
=2+,T
1/2=769 ms) has been determined by use of a modified -NMR detection as |Q(8B)|=68.3±2.1 mb, which is twice the prediction of the Cohen-Kurath shell model calculation. The anomalous quadrupole moment which is carried mainly by the protons in the nucleus, has been accounted for by the proton halo effect. 相似文献
965.
T. Minamisono T. Ohtsubo S. Fukuda Y. Nakayama T. Araki K. Masitani K. Matsuda E. Takahashi M. Tanigaki M. Tanaka H. Shiohara Y. Someda Y. Aoki A. Kitagawa M. Fukuda K. Matsuta Y. Nojiri 《Hyperfine Interactions》1993,78(1-4):111-116
Hyperfine interactions of -emitting17F implanted in single crystals of NaF and CaF2 were studied. The nuclear magnetic moment of theI
=5/2+ state was determined with improved precision to be |(17F;I
=5/2+,T
1/2=64.5s)|=4.72130±0.00025 µN. 相似文献
966.
Hirata KS Inoue K Kajita T Kihara K Nakahata M Nakamura K Ohara S Sato N Suzuki Y Totsuka Y Yaginuma Y Mori M Oyama Y Suzuki A Takahashi K Yamada M Koshiba M Nishijima K Suda T Tajima T Miyano K Miyata H Takei H Fukuda Y Kodera E Nagashima Y Takita M Kaneyuki K Tanimori T Beier EW Feldscher LR Frank ED Frati W Kim SB Mann AK Newcomer FM Van Berg R Zhang W 《Physical review letters》1991,66(1):9-12
967.
968.
969.
This paper presents algorithms for computing the Gröbner fan of an arbitrary polynomial ideal. The computation involves enumeration of all reduced Gröbner bases of the ideal. Our algorithms are based on a uniform definition of the Gröbner fan that applies to both homogeneous and non-homogeneous ideals and a proof that this object is a polyhedral complex. We show that the cells of a Gröbner fan can easily be oriented acyclically and with a unique sink, allowing their enumeration by the memory-less reverse search procedure. The significance of this follows from the fact that Gröbner fans are not always normal fans of polyhedra, in which case reverse search applies automatically. Computational results using our implementation of these algorithms in the software package Gfan are included.
970.
Tomoki Yabutani Yasuhiro Utsunomiya Yukiko Kado Yuji Tani Hideyuki Kishimoto Akinori Fukuda Junko Motonaka 《Analytical sciences》2006,22(7):1021-1024
We present a new multielement masking method using magnesium hydroxide coprecipitation for the selective determination of Pb by differential pulse anodic stripping voltammetry (DPASV). The recovery of Pb in the masking method was over 95%, while interfering ions (Cd(2+), Co(2+), Cu(2+), Fe(3+), Mn(2+), and Ni(2+)) could be removed at 100% from the analytical sample. A linear regression was obtained in the Pb concentration from 10 to 1000 microg kg(-1) in the existence of 100 microg kg(-1) of the interfering ions. When this method was applied to the determination of Pb in a natural water-standard reference material (NIST 1640), the determined value for Pb in this work (25.4 +/- 4.1 microg kg(-1)) almost agreed with the certified value (27.89 +/- 0.14 microg kg(-1)). 相似文献