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Healing Trap States of Anomalous Antisite Defects via Surface Passivation in Lead Iodide Perovskites: A First-Principles Study.
Chemphyschem
January 2025
Department of Physics, Yingbin Road 688, Jinhua, CHINA.
Undesirable loss of open-circuit voltage and current of metal halide perovskite (MHP) solar cells are closely associated with defects, so theoretical calculations have been often performed to scrutinize the nature of defects in bulk of MHPs. Yet, exploring the properties of defects at surfaces of MHPs is severely lacking given the complexity of the surface defects with high concentrations. In this study, IPb (PbI) antisite defects, namely one Pb (I) site being occupied by one I (Pb) atom at the surfaces of the FAPbI3 (FA = CH(NH2)2) material, are found to create electron (hole) traps when the surfaces with IPb (PbI) antisite defects are negatively (positively) charged.
View Article and Find Full Text PDFUnderstanding parental choices related to infant sleep practices in the United States using a mixed methods approach.
BMC Pediatr
January 2025
School of Medicine, Division of General Academic Pediatrics, University of Pittsburgh, UPMC Children's Hospital of Pittsburgh, Pittsburgh, PA, USA.
Background: This study aimed to gather information about parental practices, knowledge, and attitudes regarding infant sleep habits and environments, among families who practice non-recommended sleep practices.
Methods: We conducted one-on-one phone interviews with parents who had practiced non-recommended sleep methods with their infant and had or had not experienced an undesirable sleep event such as a fall. Interviews were recorded and coded with MAXQDA software.
Defining the Differential Corticosteroid Response Basis from Multiple Omics Approaches.
Int J Mol Sci
December 2024
Research Unit, Hospital Universitario Ntra. Sra. de Candelaria, Instituto de Investigación Sanitaria de Canarias, 38010 Santa Cruz de Tenerife, Spain.
Since their discovery, corticosteroids have been widely used in the treatment of several diseases, including asthma, acute lymphoblastic leukemia, chronic obstructive pulmonary disease, and many other conditions. However, it has been noted that some patients develop undesired side effects or even fail to respond to treatment. The reasons behind this have not yet been fully elucidated.
View Article and Find Full Text PDFImmune Responses Elicited by Outer Membrane Vesicles of Gram-Negative Bacteria: Important Players in Vaccine Development.
Life (Basel)
December 2024
Division of Microbiology and Molecular Biology, Medical Faculty, Private Sigmund Freud University, Freudplatz 3, 1020 Wien, Austria.
The attractiveness of OMVs derived from Gram-negative bacteria lies in the fact that they have two biomembranes sandwiching a peptidoglycan layer. It is well known that the envelope of OMVs consists of the outer bacterial membrane [OM] and not of the inner one [IM] of the source bacterium. This implies that all outer membranous molecules found in the OM act as antigens.
View Article and Find Full Text PDFNon-contact lensless holographic reconstruction of diffractive intraocular lenses profiles.
Sci Rep
January 2025
Faculty of Physics, Department of Optics and Optometry and Vision Sciences, Universitat de València, Burjassot, Spain.
A lensless compact arrangement based on digital in-line holography under Gabor's regime is proposed as a novel contactless method to assess the profile of multifocal intraocular lenses (MIOLs) which are conformed by several diffractive rings. Diffractive MIOLs are a widely adopted ophthalmologic option for the correction of presbyopia in patients undergoing cataract surgery. The MIOL optical design might introduce non-negligible optical performance differences between lenses as well as the introduction of undesirable photic phenomena (such as halos and glare) affecting the vision of users.
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