Detailed studies of the subpicosecond kinetics in the primary electron transfer of reaction centers of Rhodopseudomonas viridis

The primary, light-induced charge separation in reaction centers of Rhodopseudomonas viridis is investigated with femtosecond time resolution. The absorption changes after direct excitation of the primary donor P at 955 nm are investigated in the time range from 100 fs to 600 ps. The experimental data, taken at various probing wavelengths, reveal one subpicosecond and two picosecond time constants: 0.65 ± 0.2 ps, 3.5 ± 0.4 ps, and 200 ± 20 ps. The previously undetected 0.65 ps kinetics can be observed clearly in the spectral range of the Qx and Qy transitions of the monomeric bacteriochlorophylls. The experimental data support the idea that the accessory bacteriochlorophyll B A participates in the electron-transfer process. Reference

The Drottningholm Trio, October 6, 1995

This is the concert program of the The Drottningholm Trio performance on Friday, October 6, 1995 at 8:30 p.m., at the Tsai Performance Center, 685 Commonwealth Avenue, Boston, Massachusetts. Works performed were II.e Suite in B Minor from Sonates à violon seul et suites pour la flûte traversière by Antonie Dornel, Les Folies d'Espagne by Marin Marais, Sonata Seconda in B minor from Troisième Livre de Sonates by Michel Blavet, Two Pieces for a solo instrument by Anonymous, Bravade and Courante from De Fluyten Lust-hof by Jacob van Eyck, Sonata No. 5 in C minor from XII Sonatas or Solos by Jean-Baptiste Loeillet de Gant, and Sonata Sesta by Francesco Maria Veracini. Digitization for Boston University Concert Programs was supported by the Boston University Humanities Library Endowed Fund

Physics with electroweak penguins at LHCb

Flavour changing neutral currents are only allowed via loop diagrams in the Standard Model (SM). Electroweak penguin processes are therefore sensitive probes for new physics, as physics beyond the Standard Model can enter via virtual particles at the same level as SM physics. The LHCb detector at the LHC with its forward geometry is ideally suited for the analysis of electroweak penguin processes in $B$ meson decays. All analyses are performed with 1 fb$^{-1}$ of collision data recorded at a centre-of-mass energy of 7 TeV in 2011 and constrain new physics models.Comment: Proceedings of CKM 2012, the 7th International Workshop on the CKM Unitarity Triangle, University of Cincinnati, USA, 28 September - 2 October 201

The 'B' in Philosophy

This presentation-paper discusses my own live art practice in terms of the relationship between performance and philosophy. The paper also draws upon philosophical sources

Do state holding companies facilitate private participation in the water sector? evidence from Cote d'Ivoire, the Gambia, Guinea, and Senegal

When the Gambia, Guinea, and Senegal decided to involve the private sector in the provision of water services, they also established state holding companies - state-owned entities with exclusive or partial responsibilities for: a) owning infrastructure assets; b) planning and financing investments (replacing assets and expanding networks); c) regulating the activities of the private sector; and d) promoting public acceptance of private participation in the sector. In Cote d'Ivoire, by contrast, when private participation was introduced (in 1960), no state holding company was established. To determine whether state holding companies help private participation in the water sector succeed, the author reviews the four functions these entities are expected to perform in the Gambia, Guinea, and Senegal. In light of experience in all four countries, he examines whether, and under what circumstances, state holding companies might be the entities best suited for carrying out such functions. He concludes that creating a state holding company is often not the best solution. A state holding company might be better suited than other entities for planning and financing investments when (and only when): a) investment responsibilities cannot be transferred to the private operator; b) tariffs are insufficient, at least for a time, to cover investment needs, so it is crucial that a public entity has access to other sources of finance; and c) the holding company's financial strength and accountability, or its incentives and ability to promote the gradual adoption of cost-covering tariffs, are superior to those of a ministerial department. When one or more of these conditions are not met, the main investment responsibilities should be transferred to the private operator or, if that is not possible, left to the government itself. The other three functions should not, as a general rule, be performed by a state holding company.Town Water Supply and Sanitation,Environmental Economics&Policies,Water Supply and Sanitation Governance and Institutions,Water Conservation,Water and Industry