~(133)Sm和~(149)Yb的β缓发质子衰变

利用40Ca+96Ru融合蒸发反应产生了近质子滴线核133Sm,配合氦喷嘴带传输系统采用“质子-γ”符合方法观测了它们的β缓发质子衰变,其中包括半衰期、质子能谱、第二代子核低位态之间的γ跃迁,并估计出衰变到第二代子核不同低位态的分支比．通过统计理论拟合上述实验数据,指认了133Sm的自旋宇称的可能范围．并用Woods-Saxon Strutinsky方法计算了限制组态的133Sm的核势能面,通过对比发现133Sm的自旋宇称可能有两种成分:5／2+和1／2-．这一结果与2001年发表的133Sm(EC+β+)衰变的简单衰变纲图是相容的．此外用同一方法分析了2001年Eur．Phys．J．A12: 1-4中发表的有关149Yb的β缓发质子衰变实验数据,由此指认了149Yb的基态自旋宇称为1／2-．

beta-delayed proton decays of Sm-133 and Yb-149

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-.

beta-delayed proton decays and spin assignments for Sm-133 and Yb-149

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(-).

Resolución N° 149 ¿Cual es el efecto que tienen los recursos propios de la vía gubernativa frente los actos de registro que expiden las Cámaras de Comercio?

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Resolución N° 149 ¿Cuál es la finalidad de la figura de la convocatoria? ¿Cuál es la finalidad de la revocatoria directa? ¿Cuál es el alcance del control de legalidad de la Cámara de Comercio respecto de los nombramientos?

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Resolución N° 149 ¿Qué norma es aplicable para el intervalo requerido entre primera y segunda convocatoria de asamblea de la junta de socios cuando los estatutos regulan dicho término de forma diversa a la disposición legal aplicable?

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HG 149.0-149.10

Brown sediment with organic matter present throughout. Clasts range from small to medium in size and angular to sub-rounded in shape. Lineations are common throughout the sample, with some grain stacking and minor amounts of rotation.

HG 149.70-149.85

Brown sediment with clasts ranging from small to medium in size. Clast shape ranges from angular to rounded. Lineations and grain crushing are abundant throughout the sample. This sample also includes several inclusions of darker and fine grained domains. Comet structures can also be seen in some areas of the sample.

La educación en medios de comunicación social.

En el libro se plantea la integración de la comunicación, como hecho social significativo en los procesos de enseñanza y aprendizaje, contextualizar programas de educación crítica de los medios, estableciendo las pautas básicas para su integración curricular transversal. El manual justifica las razones después de una amplia revisión bibliográfica internacional (la educación en medios en el mundo europeo, Norteamérica, América Latina, Asia y Africa).