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We have entered a new era in which antiretroviral agents have been demonstrated to be highly effective in preventing HIV-1 infection, especially in serodiscordant couples. The HPTN-052 randomized, controlled trial (RCT) of early versus delayed antiretroviral therapy (ART) for the HIV-1-infected persons in sexual partnerships with HIV-negative persons demonstrated at least a 96% reduction in HIV...

We have derived new abundances of the rare-earth elements Pr, Dy, Tm, Yb, and Lu for the solar photosphere and for five very metal-poor, neutron-capture r-process-rich giant stars. The photospheric values for all five elements are in good agreement with meteoritic abundances. For the low metallicity sample, these abundances have been combined with new Ce abundances from a companion paper, and r...

to be published in the " Starburst Activity in Galaxies " proceedings by the RevMexAstronAstrofis. ABSTRACT HST spectroscopical observations of 8 HII galaxies are reported. Lyα emission was detected in 4 of them. We find that it is the velocity structure of the gas which is the main determining factor for the escape of the Lyα photons, and not the abundance of dust. The rest of the sample shows...

Europium isotopic abundance fractions are reported for the very metal-poor, neutron-capture-rich giant stars CS 22892-052, HD 115444, and BD +17◦3248. The abundance fractions, derived from analysis of several strong Eu II lines appearing in high-resolution spectra of these stars, are in excellent agreement with each other and with their values in the Solar System: fr(Eu)≃ fr(Eu) ≃ 0.5. Detailed...

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Plasma levels of human immunodeficiency virus type 1 (HIV-1) RNA and markers of immune activation were compared among HIV-1-infected female sex workers (FSWs) with (n=112) and without (n=88) sexually transmitted diseases (STDs) in Abidjan, Côte d'Ivoire. After adjustment for CD4+ T cells, the median virus load was 2.5-fold higher among HIV-seropositive FSWs with STDs than among those without an...

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We investigated whether retrieval would be best when study materials and tests are printed on the same colored paper, consistent with the encoding specificity principle. Undergraduates read a passage printed on red or green paper (Experiment 1) or white paper (Experiment 2), and took a test printed on red or green paper (Experiment 1) or white, blue, green, yellow, or pink paper (Experiment 2)....