Publications by authors named "T Lopez"
Phosphor-converted micro-light emitting diodes (micro-LEDs) are a crucial technology for display applications but face significant challenges in light extraction because of the high refractive index of the blue pump die chip. In this study, we design and experimentally demonstrate a nanophotonic approach that overcomes this issue, achieving up to a 3-fold increase in light extraction efficiency. Our approach involves engineering the local density of optical states (LDOS) to generate quasi-guided modes within the phosphor layer by strategically inserting a thin low-index spacer in combination with a metasurface for mode extraction.
View Article and Find Full Text PDFBackground: The premaxillary-maxillary suture (PMS) is related to midface development, but its exact closure period remains undefined. Some authors consider the premaxilla as an independent bone with potential for orthopaedic stimulation, while others see it as a phylogenetic vestige.
Objective: To determine the prevalence of the premaxillary-maxillary suture (PMS) in cone beam computed tomography (CBCT) images of patients aged 6 to 16years, according to age and sex, treated at the Dental Clinic of the Pontificia Universidad Católica de Chile's Oral Imaging Service between 2015 and 2023.
Article Synopsis
- Preterm birth (PTB) is a major cause of complications in newborns, and identifying women at risk for spontaneous preterm labor (PTL) is difficult due to the lack of reliable diagnostic tools.
- The study investigated the link between specific maternal lymphocyte subpopulations and the likelihood of giving birth within 7 days for women hospitalized with PTL between 24 and 34 weeks of pregnancy.
- Results indicated that higher levels of certain lymphocyte markers were associated with a higher likelihood of delivering soon, allowing for the potential identification of high-risk women and possibly reducing unnecessary hospital admissions and related healthcare costs if confirmed in future research.
Objectives: Concurrence of pregnancy and cancer diagnosis is increasingly frequent in Italy. The study aimed to compare women with pregnancy-associated cancers (PACs) to those of childbearing age, focusing on fertility, induced abortion, and miscarriage.
Methods: The population-based study included women aged 15-49 years, both with and without PAC, who were residents in the area covered by the 19 participating Cancer Registries between 2003 and 2015 and identified by individual deterministic linkage with the Hospital Discharge Database.
Background: Disordered eating behaviors and body dissatisfaction are highly prevalent among adolescents and linked to negative health outcomes. While Hispanic adolescents appear to be at high risk of disordered eating and body dissatisfaction, validated tools for assessment of these health concerns among this population are lacking.
Methods: This study used Confirmatory Factor Analysis to establish factorial validity for the Kids Eating Disorder Survey (KEDS) among a community sample of Hispanic adolescents.