993 resultados para 124-773B
Resumo:
[ES]El trabajo parte de una clarificación del concepto de duplicidad funcional administrativa distinguiéndolo de las concurrencias y las ineficiencias, y plantea un enfoque selectivo a la hora de afrontarlas. Se analizan los ámbitos críticos para la aparición de duplicidades e ineficiencias y sus posibles causas, para, posteriormente, examinar los instrumentos jurídicos de que disponemos para evitarlas o encauzarlas valorando su efectividad en las políticas de ingreso y de gasto, y finalmente realizar propuestas. El trabajo analiza, asimismo, recientes iniciativas legislativas (ley municipal de Euskadi y ley de administración pública vasca) que prevén cambios significativos en la institucionalización interna y en las relaciones entre Administraciones Públicas, vascas valorando sus novedades e insuficiencias como instrumento para superar las duplicidades.
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There is, in nature, as well as in the aquarium, a parasitic disease known as 'mousse' and which attacks predominantly fish. It is caused by Phycomycete fungi, genus Saprolegnia. The fungus causes external lesions and covers the fish with a thick white layer from whence comes the name 'mousse', commonly attributed to the disease, for which the scientific name is Saprolegnia. This article provides an overview of Saprolegnia infections on fish in nature and aquaria and then discusses symptomology of Saprolegnia in the mirror caro and t roach in more detail.
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[ES]En este proyecto, se plantean dos diseños de diferenciales electrónicos así como un modelo de vehículo para comprobar su validez. Se han programado ambos métodos en LabView2013 así como el modelo para llevar a cabo una serie de simulaciones que permitan validar los diseños realizados. Los resultados obtenidos por ambos diferenciales son satisfactorios y podrían utilizarse indistintamente. El estudio realizado sirve como punto de partida para simulaciones más complejas, así como de paso previo para la implementación de estos modelos de diferenciales en vehículos reales.
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Experimental investigation of Talbot self-imaging effect of an amplitude grating under illumination of femtosecond laser pulse -- the FemtoTalbot effect is reported. Theoretical analyzed results show that Talbot images under illumination of femtosecond laser pulses are not the same as that under continuous wave illumination. Experimental results are in good agreement with the theoretical analysis. We believe that the experimental investigation of the FemtoTalbot effect is highly interesting for the enormous potential applications of Talbot effect.
Resumo:
Electronic Kαl x-ray isotope shifts have been measured for Sn 116-124, Sm 148-154, W 182-184, W 184-186, and W 182-186 using a curved crystal Cauchois spectrometer. The analysis of the measurements has included the electrostatic volume effect, screening by the transition electron as well as the non-transition electrons, normal and specific mass shifts, dynamical nuclear qudrupole polarization, and a radiative correction effect of the electron magnetic moment in the nuclear charge radii are obtained. Where other experimental data are available, the agreement with the present measurements is satisfactory. Comparisons with several nuclear model predictions yield only partial agreement.
Resumo:
The aim of this study was to develop a short-term genotoxicity assay for monitoring the marine environment for mutagens. Based on the developing eggs and embryos of the marine mussel Mytilus edulis, an important pollution indicator species, the test employs the sensitive sister chromatid exchange (SCE) technique as its end-point, and exploits the potential of mussel eggs to accumulate mutagenic pollutants from the surrounding sea water. Mussel eggs take up to 6 months to develop while in the gonad, which provides scope for DNA damage to be accumulated over an extended time interval; chromosome damage is subsequently visualised as SCEs in 2-cell-stage embryos after these have been spawned in the laboratory. Methods which measure biological responses to pollutant exposure are able to integrate all the factors (internal and external) which contribute to the exposure. The new cytogenetic assay allows the effects of adult exposure to be interpreted in cells destined to become part of the next generation.
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124 p.
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abstract {Proton induced X-ray emission (PIXE) technique is an effective method for the chemical composition analysis of ancient glass samples without destruction. Chemical composition of the ancient glass samples dated from the Warring States Period (770-476 B.C.) to the Six Dynasties Period (220-589 A.D.), which were unearthed in Sichuan area, was quantitatively determined by the PIXE technique. The results show that the glass Bi (disc) and the glass eye beads of the Warring States Period all belong to the PbO-BaO-SiO2 system. According to the composition and shape, we infer that these glass Bi and eye beads were made in China. Whereas, the chemical compositions of the glass ear pendants and beads of the Six Dynasties Period are varied, including K2O-CaO-SiO2, K2O-SiO2 and other glass systems. Based on the obtained results and those from literatures, some questions related to the technical propagation of the ancient Chinese glass are discussed.}