Opinions of medical students at the University of Cape Town on emigration, conscription and compulsory community service

A study was conducted to determine emigration intentions of medical students at the University of Cape Town. Students from 1st to 5th year completed a self-administered questionnaire. A response rate of 86% was achieved. Over half the students (54%) were considering emigration. The most frequently selected motivating factors were moral dissatisfaction with the present government and career opportunities abroad. Men who were eligible for military conscription rated this factor as an important deterrent to remaining in South Africa, and 81% stated objections to national service. However, 71% would be less likely to emigrate were an alternative national service (ANS) instituted. Should a compulsory community service be implemented, 41% of those eligible would be more inclined to emigrate. Recommendations include the implementation of ANS; a re-evaluation of the compulsory community service proposal; and further investigation of emigration trends and of ways to curb emigration. Suggestions offered are a reappraisal of both selection criteria and medical education; and the provision of incentives for doctors to work in rural areas

Quarkonia production with the Hera-B experiment

Measurements of the dependence of the J/Psi production cross section on its kinematic variables as well as on the target atomic numbers for 920 GeV/c protons incident on different targets have been made with the Hera-B detector. The large collected di-lepton sample allows to study the production ratio of Psi(2S) to J/Psi and of Chic to J/Psi . We also report on measurements of the b-bbar and Upsilon production cross section.Comment: 9 pages, 11 figure

Noncollisional plasmoid instability based on a gyrofluid and gyrokinetic integrated approach

In this work, the development of two-dimensional current sheets with respect to tearing-modes, in collisionless plasmas with a strong guide field, is analysed. During their non-linear evolution, these thin current sheets can become unstable to the formation of plasmoids, which allows the magnetic reconnection process to reach high reconnection rates. We carry out a detailed study of the impact of a finite $\beta_e$, which also implies finite electron Larmor radius effects, on the collisionless plasmoid instability. This study is conducted through a comparison of gyrofluid and gyrokinetic simulations. The comparison shows in general a good capability of the gyrofluid models in predicting the plasmoid instability observed with gyrokinetic simulations. We show that the effects of $\beta_e$ promotes the plasmoid growth. The impact of the closure applied during the derivation of the gyrofluid model is also studied through the comparison of the energy variation

Heavy Flavor Probes of Quark Matter

A brief survey of the role of heavy flavors as a probe of the state of matter produced by high energy heavy ion collisions is presented. Specific examples include energy loss, initial state gluon saturation, thermalization and flow. The formation of quarkonium bound states from interactions in which multiple heavy quark-antiquark pairs are initially produced is examined in general. Results from statistical hadronization and kinetic models are summarized. New predictions from the kinetic model for J/Psi at RHIC are presented.Comment: Based on invited plenary talk at Strange Quark Matter 2004, Cape Town, South Africa, September 15-20, 2004, references completed, published in J. Phys. G: Nucl. Part. Phys. 31 (2005) S641-S64

Contribution à l'étude de la culture dérobée de fourrages en rizière dans la région de Tananarive

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PHENIX Highlights

Recent highlights of measurements by the PHENIX experiment at RHIC are presented.Comment: 8 pages, 9 figures. Talk at Quark Matter 200