We survey some of the recent promising developments in the search for the theory behind neutrino mass and tri-bimaximal mixing, and indeed all fermion masses and mixing. We focus in particular on models with discrete family symmetry and unification, and show how such models can also solve the SUSY flavour and CP problems. We also discuss the theoretical implications of the measurement of a non-...

Neural mass models have been actively used since the 1970s to model the coarse grained activity of large populations of neurons and synapses. They have proven especially useful in understanding brain rhythms. However, although motivated by neurobiological considerations they are phenomenological in nature, and cannot hope to recreate some of the rich repertoire of responses seen in real neurona...

On the use of mass-conserving wind fields in chemistry-transport models B. Bregman, A. Segers, M. Krol, E. Meijer, and P. van Velthoven Royal Netherlands Meteorological Institute, P.O. Box 201, 3730 AE, De Bilt, Netherlands Institute for Marine and Atmospheric Research Utrecht, Princetonplein 5, 3584 CC, Netherlands Received: 30 August 2002 – Accepted: 16 October 2002 – Published: 28 October 20...

A new set of stellar models in the mass range 1.2 to 9 M⊙ is presented. The adopted chemical compositions cover the typical galactic values, namely 0.0001 ≤ Z ≤ 0.02 and 0.23 ≤ Y ≤ 0.28. A comparison among the most recent compilations of similar stellar models is also discussed. The main conclusion is that the differencies among the various evolutionary results are still rather large. For examp...

the mass transfer performance of a pulsed disc and doughnut column for extraction of samarium and gadolinium from aqueous nitrate solution with d2ehpa was investigated. the effects of operating parameters such as pulsation intensity, continuous and dispersed phase velocities on column performance were investigated. the axial dispersion model was used to obtain the overall mass transfer coeffici...