947 resultados para 133-823


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Sm-133 was produced via fusion evaporation in the reaction Ca-40+Ru-96. Its P-delayed proton decay was studied by means of "p-gamma" coincidence in combination with a He-jet tape transport system, including half-lives, proton energy spectra, gamma-transitions following the proton emissions, and the branching ratios to the low-lying states in the grand-daughter nuclei. The possible spins and parities of 133Sm were extracted by fitting the experimental data with a statistical model calculation. The configuration-constrained nuclear potential energy surfaces of Sm-133 were calculated by using the Woods-Saxon Strutinsky method. Comparing the experimental and calculated results, the spins and parities Of Sm-133 were assigned to be 5/2(+) and 1/2(-), which is reconciled with our published simple (EC+beta(+)) decay scheme Of Sm-113 in 2001. In addition, our experimental data on the beta-delayed proton decay of Yb-149 reported in Eur. Phys. J., 2001, A12: 1-4 was also analyzed by using the same method. The spin and parity of Yb-149 was assigned to be 1/2-.

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The proton-rich isotope Sm-133 was produced via the fusion evaporation reaction Ca-40 + Ru-96. Its beta-delayed proton decay was studied by p-gamma coincidence in combination with a He-jet tape transport system, and half-lives, proton energy spectra, gamma-transitions following the proton emission, as well as beta-delayed proton branching ratios to the low-lying states in the grand-daughter nucleus were determined. Comparing the observed beta-delayed proton branching ratios with statistical model calculations, the best agreement is found assuming that only one level with the spin of 3/2 in Sm-133 decays or two levels with the spins of 1/2 and 5/2 decay with similar half-lives. The configuration-constrained nuclear potential energy surfaces of Sm-133 were calculated using the Woods-Saxon-Strutinsky method, which suggests a 1/2-ground state and a 5/2(+) isomer with an excitation energy of 120 keV. Therefore, the simple(EC+beta(+)) decay scheme of Sm-133 in Eur. Phys. J.A 11,277(2001) has been revised. In addition, our previous experimental data on the beta-delayed proton decay of Yb-149 reported in Eur. Phys. J. A 12,1 ( 2 0 0 1) was also analyzed using the same method. The spin-parity of Yb-149 is suggested to be 1/2(-).

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随着稀土资源的不断开发利用,它们不可避免地通过多种途径进入生物体内,因而从分子和细胞水平上研究稀土的生物效应具有非常重要的理论和实际意义.关于稀土与细胞作用的研究已有诸多报道,本文报道用~(133)Cs NMR方法研究La~(3+)对Cs~+跨膜进入红细胞的影响.对于物质跨膜传输的研究,首先需要合适的手段将被传输物质在膜两侧的分布区分开.在碱金属离子中,仅~(133)Cs~+在不引入顺磁位移试剂情况下,细胞内外NMR信号能确切区分,并且在体系中无K~+时,Cs~+有类似于K~+的功能,故~(133)Cs是研究稀土离子与细胞作用

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China Low Activation Martensitic (CLAM) steel is considered to be the main candidate material for the first wall components of future fusion reactors in China. In this paper, the low cycle fatigue (LCF) behavior of CLAM steel is studied under fully reversed tension–compression loading at 823 K in air. Total strain amplitude was controlled from 0.14% to 1.8% with a constant strain rate of 2.4×10−3 s−1. The corresponding plastic strain amplitude ranged from 0.023% to 1.613%. The CLAM steel displayed continuous softening to failure at 823 K. The relationship between strain, stress and fatigue life was obtained using the parameters obtained from fatigue tests. The LCF properties of CLAM steel at 823 K followed Coffin–Manson relationship. Furthermore, irregular serration was observed on the stress–strain hysteresis loops of CLAM steel tested with the total strain amplitude of 0.45–1.8%, which was attributed to the dynamic strain aging (DSA) effect. During continuous cyclic deformation, the microstructure and precipitate distribution of CLAM steel changed gradually. Many tempered martensitic laths were decomposed into subgrains, and the size and number of M23C6 carbide and MX carbonitride precipitates decreased with the increase of total strain amplitude. The response cyclic stress promoted the recovery of martensitic lath, while the thermal activation mainly played an important role on the growth of precipitates in CLAM steel at 823 K. In order to have a better understanding of high-temperature LCF behavior, the potential mechanisms controlling stress–strain response, DSA phenomenon and microstructure changes have also been evaluated.

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Contient : 1° « Le Pelerinage de vie humaine » [par GUILLAUME DE DEGUILLEVILLE] ; 2° « Le Pelerinage de l'ame », de « GUILLERMUS DE GUILLEVILLA » ; 3° « Le Pelerinage Jhesu Crist », du même ; 4° « L'Oroison de cil qui le songa »

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Colonne 1 : trois vignettes sur trois registres. Sur la vignette supérieure, on voit le défunt en adoration devant Khépri, forme du dieu solaire, qui se trouve sur la barque solaire. La vignette du milieu montre le défunt en adoration devant Osiris assis sur son trône et assisté de Isis. La dernière vignette montre le défunt en adoration devant deux divinités assises, qui symbolisent l'Ennéade.Col. 2, x+1-11 et vignette : chapitre 111 (=108) avec titre en lacune ("Formule pour connaître les âmes de l'Occident"). La vignette montre le défunt en adoration devant deux divinité à tête de faucon.Col. 2, x+12-20 : chapitre 114 avec titre rubrique : "Formule pour connaître les âmes d'Hermopolis". La vignette montre le défunt devant Thot et une table d'offrandes.Col. 3, 1-10 et vignette : chapitre 117 avec titre rubriqué : "Formule (pour s'engager dans les chemins de Rosetchaou)". La vignette montre le défunt s'inclinant, le dos tourné vers une butte. Col. 3, 11-19 et vignette : chapitre 118 avec titre rubriqué : "Formule pour atteindre Rosetchaou". La vignette montre le défunt s'inclinant.Col. 4, 1-12 et vignette : chapitre 119 avec titre rubriqué : "Formule pour sortir de (Rosetchaou)". La vignette montre le défunt debout tourné vers la droite.Col. 4, 13-21 et vignette : chapitre 120 (=12) avec titre rubriqué : "Formule pour entrer et sortir de Rosetchaou". La vignette montre le défunt face à lui-même.Col. 5, 1-30 : début du chapitre 125, déclaration d'innocence.

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Tesis (Maestría en Derecho Público ) U.A.N.L.

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