Crystal growth, structural phase transitions and optical gap evolution of FAPb(BrCl) hybrid perovskites (FA: formamidinium ion, CH(NH)).

Chemically tuned organic-inorganic hybrid halide perovskites based on bromide and chloride anions CH(NH)Pb(BrCl) (CH(NH): formamidinium ion, FA) have been crystallized and investigated by neutron powder diffraction (NPD), single crystal X-ray diffraction (SCXRD), scanning electron microscopy (SEM) and UV-vis spectroscopy. FAPbBr and FAPbCl experience successive phase transitions upon cooling, lowering the symmetry from cubic to orthorhombic phases; however, these transitions are not observed for the mixed halide phases, probably due to compositional disorder. The band-gap engineering brought about by the chemical doping of FAPb (BrCl) perovskites (x = 0.

complex (MAC) infection in severely immunocompromised people living with HIV: Findings from a five-year cohort.

Background: We sought to clarify the current incidence, risk factors and symptoms of disseminated complex (dMAC) infection in admitted people living with HIV in a hospital in the Southeast of Spain.

Methods: 5-years observational, retrospective and single-centre study. Demographic, clinical and analytical variables, along with microbiological, treatment and follow-up were collected.

A BreakoutEDU for understanding gene expression in high school. A case study: Design, implementation, and evaluation of the emotions of its implementation.

Knowledge about genetics is essential to build a society capable of participating in socioscientific and ethical debates. However, this subject remains difficult for students, making it necessary to develop new educational strategies, such as gamification. Thus, two main objectives are established in this work: (a) to design and evaluate BreakoutEDU, a gamified activity to improve understanding of the content of gene expression; and (b) to study the emotions triggered by this activity among students.

New insights into the magnetism and magnetic structure of LuCrO perovskite.

A polycrystalline sample LuCrO has been characterized by neutron powder diffraction (NPD) and magnetization measurements. Its crystal structure has been Rietveld refined from NPD data in space group Pnma; this perovskite contains strongly tilted CrO octahedra with extremely bent Cr-O-Cr superexchange angles of ∼142°. The NPD data show that below Néel temperature (T ≃ 131 K), the magnetic structure can be defined as an A-type antiferromagnetic arrangement of Cr magnetic moments, aligned along the b axis, with a canting along the c axis.