Operació Ring-Ring, 2002 tardor, als instituts : desafiant la pluja. 'Operación Ring-Ring, 2002 otoño, en los institutos : desafiando la lluvia'.

Resumen del autor en catalán

Poverty impacts of agricultural policy adjustments in an opening economy: the case of Colombia

We aim to contribute to the assessment of poverty impacts on the rural sector arising from agricultural policy adjustments in Colombia. For this we use an agriculture specialized static CGE model, jointly (sequentially) with a microsimulation model that allows for effective job relocation. Results indicate that the sectoral impact of the program implemented tends to be small and has considerable variability across crops. They also show that the highest impacts come from the irrigation and land improvements component of the program. Lastly, although it reduces poverty, poverty impacts are small and tend to concentrate in rural households toward the middle of the income distribution ladder.

Opening eyes : a poetry collection.

Antología poética que abarca diferentes culturas y siglos, y que incluye una amplia gama de estilos poéticos, empleados por célebres y menos conocidos poetas. Los poemas se agrupan en cinco secciones temáticas. Cada sección concluye con una serie de ejercicios para ayudar a explorar las ideas y el uso del lenguaje de los poetas. Al final de cada sección hay actividades que proporcionan oportunidades para comparar dos o más textos. La colección incluye, entre otros, poemas de William Blake, Eiléan Ni Chuilleanáin, A.E. Housman, Philip Larkin, Jean Sprackland, Rabindranath Tagore, Han Yong-Un, Benjamín Zephaniah. Hay notas sobre los autores .

Opening eyes : teachers' resource CD-ROM.

Recurso para el profesor que acompaña a la antología del texto del alumno. Compatible con el estudio de una gran variedad de poemas que abarcan diferentes culturas y siglos y que cubren diferentes estilos. Contiene planes de lecciones, hojas de trabajo, y materiales multimedia.

Vibrational spectroscopy of a compound with a CS7 ring

The product of the Asinger reaction between elemental sulfur, n-butylamine and acetophenone is 8-(n-butylaminophenylmethyliden)-1,2,3,4,5,6,7-heptathiocane which contains a CS7 ring. A combination of infrared, Raman and inelastic neutron scattering spectroscopies with periodic density functional theory calculations is used to provide a complete assignment of the vibrational spectra of this unusual species. The similarity between the Raman spectra of the compound and that of elemental sulfur is particularly striking. Copyright (C) 2009 John Wiley & Sons, Ltd.

Wiggle-match dating of tree-ring sequences

Given the non-monotonic form of the radiocarbon calibration curve, the precision of single C-14 dates on the calendar timescale will always be limited. One way around this limitation is through comparison of time-series, which should exhibit the same irregular patterning as the calibration curve. This approach can be employed most directly in the case of wood samples with many years growth present (but not able to be dated by dendrochronology), where the tree-ring series of unknown date can be compared against the similarly constructed C-14 calibration curve built from known-age wood. This process of curve-fitting has come to be called "wiggle-matching." In this paper, we look at the requirements for getting good precision by this method: sequence length, sampling frequency, and measurement precision. We also look at 3 case studies: one a piece of wood which has been independently dendrochronologically dated, and two others of unknown age relating to archaeological activity at Silchester, UK (Roman) and Miletos, Anatolia (relating to the volcanic eruption at Thera).