Between 2001 and 2003 the London Health Commission undertook health impact assessments (HIAs) on a series of strategies developed by the Greater London Authority and the Mayor of London. The HIAs were rapid, each involving a literature review and a participant workshop. In all cases the reports made a series of recommendations that were given to the Mayor. The HIAs led to changes and ensured th...

Classical planning is useful because it generates a partially ordered set of steps to achieve a goal consistent with the planner's world model. Situated activity is useful for agents which responds quickly to changes in the interactive world. Unfortunately, everyday-world activity cannot rely on the costly, brittle plans of a theorem proving, nor can it resort to the stateless decisions of a si...

La prevalencia de la depresión varía en función del medio que estudiemos. La depresión mayor muestra una prevalencia menor del 3% en la comunidad2-5, del 10-16% en unidades de agudos6,7 y del 15-25% en residencias3,4,8. Las llamadas depresiones menores son aún más prevalentes: las presentan un 15-20% de los ancianos en la comunidad5,9, el 40% en hospitales2,10 y un 30-50% en instituciones2,7,9,...

Sr. Editor. La migración de profesionales de la salud es un fenómeno que se ha dado siempre y que ahora, al poder ser cuantificado e incluido en la agenda de la política sanitaria actual, ha cobrado mayor relevancia. En el caso especial de los médicos, este flujo migratorio suele ser unidireccional, esto significa migrar desde un lugar con menor desarrollo socioeconómico a uno donde las condici...

1. Udalski, A. et al. Acta Astron. 52, 1–37 (2002). 2. Udalski, A. et al. Acta Astron. 52, 115–128 (2002). 3. Konacki, M., Torres, G., Jha, S. & Sasselov, D. D. Nature 421, 507–509 (2003). 4. Mayor, M. & Queloz, D. Nature 378, 355–359 (1995). 5. Goldreich, P. & Tremaine, S. Astrophys. J. 241, 425–441 (1980). 6. Murray, N., Hansen, B., Holman, M. & Tremaine, S. Science 279, 69–72 (1998). 7. Henr...

La artritis reumatoide (AR) se asocia a un mayor riesgo del desarrollo de linfomas, de 1,9-6,7 veces mayor que la población general1. El metotrexato (MTX), es un fármaco antirreumático modificador de la enfermedad, usado en el tratamiento de la AR y de otras patologías reumáticas. Los efectos adversos graves poco frecuentes asociados al tratamiento con MTX, son la neumonitis intersticial, aplas...

Local governments are particularly relevant to people’s daily lives as they manage infrastructure and services that directly influence quality of life. Elected mayors tend to be more responsive to the needs of the poor majority than centrally-appointed mayors or mayors elected by fellow councillors. Colombia’s municipal mayors have been elected since 1988, with local governments given increased...

Triterpenes and anthraquinones from Picramnia sellowii Planchon in Hook (Simaroubaceae) Luisa Balderrama, Alessandra Braca*, Emilia Garcia, Marcela Melgarejo, Cosimo Pizza, Nunziatina De Tommasi a Instituto de Investigaciones Quimicas, Universidad Mayor de San Andres, Calle 27, esq. A. Bello, Cota Cota, La Paz, Bolivia Dipartimento di Chimica Bioorganica e Biofarmacia, Universita di Pisa, Via B...

The crystalline appearance of reovirus aggregates in culture cells seems to be well established as is the association of the virus with spindle tubules. Pleomorphism of the nucleoid has been reported by Harford et al. (1962). These workers also reported careless particles with indications of a double layered capsid. Careless particles in culture cells have also been reported by Anderson & Doane...