RESUMO
Shape parameters of a weakly deformed ground-state band and highly deformed slightly triaxial sideband in ^{42}Ca were determined from E2 matrix elements measured in the first low-energy Coulomb excitation experiment performed with AGATA. The picture of two coexisting structures is well reproduced by new state-of-the-art large-scale shell model and beyond-mean-field calculations. Experimental evidence for superdeformation of the band built on 0_{2}^{+} has been obtained and the role of triaxiality in the Aâ¼40 mass region is discussed. Furthermore, the potential of Coulomb excitation as a tool to study superdeformation has been demonstrated for the first time.
RESUMO
The properties of pygmy dipole states in 208Pb were investigated using the 208Pb(17O, 17O'γ) reaction at 340 MeV and measuring the γ decay with high resolution with the AGATA demonstrator array. Cross sections and angular distributions of the emitted γ rays and of the scattered particles were measured. The results are compared with (γ, γ') and (p, p') data. The data analysis with the distorted wave Born approximation approach gives a good description of the elastic scattering and of the inelastic excitation of the 2+ and 3- states. For the dipole transitions a form factor obtained by folding a microscopically calculated transition density was used for the first time. This has allowed us to extract the isoscalar component of the 1- excited states from 4 to 8 MeV.
RESUMO
El control de instrumental es una de las funciones del instrumentador quirúrgico. El objetivo, buscar el método adecuado para facilitar esa tarea y se optó por investigar con cintas adhesivas, identificatorias. Método experimental llevado a cabo en el Centro Quirúrgico del Hospital Garrahan en un período continuado de 2 meses. Se utilizaron 30 cajas y se excluyeron las que requerían proceso de esterilización por calor seco. Se procedió a identificar cada pieza con cintas adhesivas para el estudio. Grupo control conformado por dos (2) Hospitales de la Ciudad de Buenos Aires; cada uno con 15 cajas de similares características con elementos sin identificación. Se consideraron tiempos de armado de las cajas. Resultados obtenidos: Grupo experimental, cajas grandes 8', cajas medianas 2'. cajas chicas 30". Grupo control cajas grandes 12'30" cajas medianas 6'. cajas chicas 4'3". Cantidad de veces utilizadas; resultados: grupo experimental 742, Grupo control 403. Irregularidades en el uso; resultados: Grupo experimental 4, Grupo control 14: Cantidad de cajas, Grupo experimental 30. Se comprobó disminución en intercambio de piezas y una significativa reducción de tiempo en el armado de las cajas, en relación a los grupos testigos.