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We constructed new sets of He-enhanced (Y = 0.30, Y = 0.40) nonlinear, time-dependent convective hydrodynamical models of RR Lyrae (RRL) stars covering a broad range in metal abundances (Z = 0.0001-0.02). The increase in He content from the canonical value (Y = 0.245) to Y = 0.30-0.40 causes a si...


Marconi, M.Bono, G.Pietrinferni, A.Braga, V.F.Castellani, M.Stellingwerf, R.F.[On the Impact of Helium Content on the RR Lyrae Distance Scale]On the Impact of Helium Content on the RR Lyrae Distance Scale

The role of interstitial chlorine in the electronic properties of CdTe is addressed by density functional theory calculations including hybrid functionals and large unit cells. The stability and diffusion energy barriers of the impurity are analyzed as a function of the Fermi level position in th...


Orellana, W.Menéndez-Proupin, E.Flores, M.A.[Energetics and Electronic Properties of Interstitial Chlorine in CdTe]Energetics and Electronic Properties of Interstitial Chlorine in CdTe

Dental erosion is a high prevalence condition characterized by the loss of dental substance due to chemical agents. It can also be associated with �physical wear, affecting function and aesthetics. Ceramic veneers can provide effective solutions to patients affected by erosive disorders, by means...


Grandon, F.Marcus, N.Muster, M.[Esthetic rehabilitation with ultra-thin ceramic veneers and direct mock-up in the treatment of dental erosion – Case report]Esthetic rehabilitation with ultra-thin ceramic veneers and direct mock-up in the treatment of dental erosion – Case report

Schiappacasse-Ulloa, J.Tang, B.Fernández-Trincado, J.G.Zamora, O.Geisler, D.Frinchaboy, P.Schultheis, M.Dell'Agli, F.Villanova, S.Masseron, T.Mészáros, S.Souto, D.Hasselquist, S.Cunha, K.Smith, V.V.García-Hernández, D.A.Vieira, K.Robin, A.C.Minniti, D.Zasowski, G.Moreno, E.Pérez-Villegas, A.Lane, R.R.Ivans, I.I.Pan, K.Nitschelm, C.Santana, F.A.Carrera, R.Roman-Lopes, A.[A Chemical and Kinematical Analysis of the Intermediate-age Open Cluster IC 166 from APOGEE and Gaia DR2]A Chemical and Kinematical Analysis of the Intermediate-age Open Cluster IC 166 from APOGEE and Gaia DR2

Clostridium difficile is a Gram-positive spore-former bacterium and the leading cause of nosocomial antibiotic-associated diarrhea that can culminate in fatal colitis. During the infection, C. difficile produces metabolically dormant spores, which persist in the host and can cause recurrence of t...


Calderón-Romero, P.Castro-Córdova, P.Reyes-Ramírez, R.Milano-Céspedes, M.Guerrero-Araya, E.Pizarro-Guajardo, M.Olguín-Araneda, V.Gil, F.Paredes-Sabja, D.[Clostridium difficile exosporium cysteine-rich proteins are essential for the morphogenesis of the exosporium layer, spore resistance, and affect C. difficile pathogenesis]Clostridium difficile exosporium cysteine-rich proteins are essential for the morphogenesis of the exosporium layer, spore resistance, and affect C. difficile pathogenesis

Cancer is the second leading cause of death in the world, causing 8.8 million deaths in 2015 according to the World Health Organization (WHO). Risk factors for cancer include smoking and alcohol consumption. In Chile, 33.6% of the population and 21.2% of young people smokes. Alcohol consumption i...

Cancer is the second leading cause of death in the world, causing 8.8 million deaths in 2015 according to the World Health Organization (WHO). Risk factors for cancer include smoking and alcohol con sumption. In Chile, 33.6% of the population and 21.2% of young people smokes. Alcohol consump tion...


Roco, Á.Cerda, B.Cayún, J.P.Lavanderos, A.Rubilar, J.C.Cerro, R.Acevedo, C.Cáceres, D.Varela, N.Quiñones, L.A.[Pharmacogenetics, tobacco, alcohol and its effect on the risk development cancer][Farmacogenética, tabaco, alcohol y su efecto sobre el riesgo de desarrollar cáncer]Farmacogenética, tabaco, alcohol y su efecto sobre el riesgo de desarrollar cáncer

Forty-three metabolites including several methoxylated flavonoids, tremetones, and ent-clerodane diterpenes were accurately identified for the first time in the ethanolic extract of P. quadrangularis by means of hyphenated UHPLC-quadrupole Orbitrap mass spectrometry, and seven isolated compounds ...


Ardiles, A.Barrientos, R.Simirgiotis, M.J.Bórquez, J.Sepúlveda, B.Areche, C.[Gastroprotective activity of Parastrephia quadrangularis (Meyen), cabrera from the atacama desert]Gastroprotective activity of Parastrephia quadrangularis (Meyen), cabrera from the atacama desert

Six new cyclodiprenyl phenols were synthesized by direct coupling of perillyl alcohol and the appropriate phenol. Their structures were established by IR, HRMS and mainly NMR. Three human cancer cell lines-breast (MCF-7), prostate (PC-3) and colon (HT-29)-were used in antiproliferative assays, wi...


Said, B.Montenegro, I.Valenzuela, M.Olguín, Y.Caro, N.Werner, E.Godoy, P.Villena, J.Madrid, A.[Synthesis and antiproliferative activity of new cyclodiprenyl phenols against select cancer cell lines]Synthesis and antiproliferative activity of new cyclodiprenyl phenols against select cancer cell lines

We present time-delay estimates for the quadruply imaged quasar PG 1115+080. Our results are based on almost daily observations for seven months at the ESO MPIA 2.2 m telescope at La Silla Observatory, reaching a signal-to-noise ratio of about 1000 per quasar image. In addition, we re-analyze exi...


Bonvin, V.Chan, J.H.H.Millon, M.Rojas, K.Courbin, F.Chen, G.C.-F.Fassnacht, C.D.Paic, E.Tewes, M.Chao, D.C.-Y.Chijani, M.Gilman, D.Gilmore, K.Williams, P.Buckley-Geer, E.Frieman, J.Marshall, P.J.Suyu, S.H.Treu, T.Hempel, A.Kim, S.Lachaume, R.Rabus, M.Anguita, T.Meylan, G.Motta, V.Magain, P.[COSMOGRAIL: XVII. Time delays for the quadruply imaged quasar PG 1115+080]COSMOGRAIL: XVII. Time delays for the quadruply imaged quasar PG 1115+080

Context. Globular clusters are known to host multiple stellar populations, which are a signature of their formation process. The globular cluster E3 is one of the few low-mass globulars that is thought not to host multiple populations. Aims. We investigate red giant branch stars in E3 with the ai...


Monaco, L.Villanova, S.Carraro, G.Mucciarelli, A.Moni Bidin, C.[Chemical abundance analysis of red giant branch stars in the globular cluster E3]Chemical abundance analysis of red giant branch stars in the globular cluster E3

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