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Recently, low-dimensional organic–inorganic metal halide perovskites acting as white-light-emitting materials have been widely studied in the field of optoelectronics and solid-state lighting owing to their facile preparation and excellent optical characteristics. However, the luminescence efficiency and light stability of white-light-emitting diodes (WLEDs) are hindered by the re-absorption of mixing phosphors due to the difference in light decay. Herein, we report for the first time a new zero-dimensional (0D) cadmium halide of (BAPPz)Cd2Br8·2H2O with [CdX4]2− as an optically active center, which emits broadband yellow light with a PLQY of 13.78%. Significantly, (BAPPz)Cd2Br8·2H2O could be used as a new phosphor for a white-light-emitting diode doped with a trace of blue commercial phosphor, which achieved a high color rendering index (CRI) of 93.7 and had a correlated color temperature (CCT) close to the domestic standard light source D65 (6500 K). With the driving current of the WLED device increasing from 20 mA to 120 mA, CRI values were consistently high (>90). This work not only demonstrates a new orientation to fabricate light-emitting diodes with high CRI values but also highlights its potential application in the development of energy-efficient white-light-emitting diodes. [ABSTRACT FROM AUTHOR]

Objective To understand the influencing factors of lumbar disc herniation (LDH) among adult residents of different ethnic groups in Gansu Province, providing foundational data for targeted prevention and control measures. Methods From May to July 2022, a stratified cluster sampling method was employed based on the altitude of residence (≤1 500 meters, 1 500 to 3 500 meters, >3 500 meters) in Gansu Province. All participants underwent questionnaire surveys, physical examinations, and assessments of blood glucose and lipid levels. A non-conditional binary logistic regression model was used to analyze the influencing factors of LDH prevalence among different ethnic groups. Results A total of 4 545 participants were included, with an overall LDH prevalence of 22.8%. The prevalence was highest among the Tibetan population at 30.6%, with significant differences observed among ethnic groups (P<0.05). For the Han ethnic group, a residence duration of less than 36 months, non-drinking, or residing at altitudes of 1 500-3 500 meters were associated with an increased risk of LDH. Conversely, being younger than 30 years, holding a position as a cadre, or residing at altitudes below 1 500 meters were associated with a reduced risk. Among the Tibetan population, low physical activity intensity, an education level of primary school or below, and a residence duration of 24-36 months were linked to an increased risk of LDH, while being male, engaging in low-intensity activities, and being unmarried were associated with a decreased risk. For the Hui ethnic group, a residence duration of 6-23 months or an age range of 30-59 years were related to an increased risk of LDH. Conclusion The prevalence of LDH varies among different ethnic groups in Gansu Province, and the influencing factors also differ. [ABSTRACT FROM AUTHOR]

Nitrogen-doped carbon materials have been widely used for the constructions of single-atom catalysts, while the effect of different species of doped nitrogen on the catalytic activity of CO2 electroreduction has rarely been investigated. Here we found that pyrrolic-N coordinated Ni2+ catalysts display much higher electrocatalytic CO2-to-CO activity and selectivity than the corresponding pyridinic-N coordinated low valent Ni(0−+2) catalysts, and pyrrolic-N coordinated Ni2 dual-atoms catalyst of Ni2/N-CNTs exhibits the best electrocatalytic performance, with over 90% Faradaic efficiencies in a broad potentials from −0.6 to −1.2 V vs. reversible hydrogen electrode, as well as an outstanding CO specific current of 56.2 A/mgNi and high turnover frequency of 6.2 × 104 h−1, over 7-times higher than those of pyridinic-N coordinated Ni catalysts. Electrochemical results indicate the weak electron-donor nature of pyrrolic-N facilitates the generation of a reduced active site at low overpotential for boosting CO2 electroreduction. Density functional theory calculations reveal that the reaction free energy for the *COOH formation on pyrrolic-N coordinated Ni catalysts are lower than those on pyridinic-N coordinated Ni catalysts, and a H2O-adsorbed Ni2/N-CNTs displays the optimized reaction free energy for both *COOH formation and CO desorption, which derive the best catalytic performance. [ABSTRACT FROM AUTHOR]

Objective To investigate the associations between leisure screen time and the insomnia symptoms among adolescents. Methods A random cluster sampling method was used to assess leisure screen time among adolescents aged 12-18 attending schools in Pidu District, Chengdu. Participants reported their screen time on school days and weekends via self-administered questionnaires. Insomnia symptoms were collected using the Insomnia Severity Index (ISI). Adolescents were categorized into two groups based on their ISI scores: the non-insomnia group (ISI score < 7) and the insomnia group (ISI score ≤ 7). Logistic regression models, adjusted for multifile confounders, were used to estimate the association between leisure screen time and the occurrence of insomnia symptoms. Results A total of 13 240 adolescents participated, comprising 6 581 boys (49.7%) and 6 659 girls (50.3%), with a mean age of 15.4 years (± 1.7). Of these, 51.8% reported an average daily leisure screen time exceeding 2 h, and the prevalence of insomnia symptoms was 35.3%. After adjusting for SSI confounding factors, logistic regression analysis indicated that leisure screen time > 2 h was a significant risk factor for insomnia symptoms (OR = 1.13, 95% CI = 1.03-1.23). Further analysis by quartiles of leisure screen time revealed that adolescents in Q3 (OR=1. 15, 95% CI=1.02-1.2 ) and Q4 (OR = 1.22, 95% CI = 1.08-1.39) had significantly increased risks of insomnia, whereas no significant association was observed in the Q2 group. A clear dose - response relationship was observed between leisure screen time and insomnia (Pattend <0.001). Subgroup analyses by sex, region, economic status, single child, and caretaker did not reveal significant interactions (Pinteraction > 0.05). Conclusion Prolonged leisure screen time significantly increases the risk of insomnia symptoms among adolescents. Parents and schools should encourage physical activity and reduce electronic device usage to promote their well-being. [ABSTRACT FROM AUTHOR]

Zero‐dimensional (0D) hybrid metal halides have been emerged as room‐temperature phosphorescence (RTP) materials, but synchronous optimization of multiple phosphorescence performance in one structural platform remains less resolved, and stable RTP activity in aqueous medium is also unrealized due to serious instability toward water and oxygen. Herein, we demonstrated a photophysical tuning strategy in a new 0D hybrid zinc halide family of (BTPP)2ZnX4 (BTPP=benzyltriphenylphosphonium, X=Cl and Br). Infrequently, the delicate combination of organic and inorganic species enables this family to display multiple ultralong green afterglow and efficient self‐trapped exciton (STE) associated cyan phosphorescence. Compared with inert luminescence of [BTPP]+ cation, incorporation of anionic [ZnX4]2− effectively enhance the spin‐orbit coupling effect, which significantly boosts the photoluminescence quantum yield (PLQY) up to 30.66 % and 54.62 % for afterglow and phosphorescence, respectively. Synchronously, the corresponding luminescence lifetime extend to 143.94 ms and 0.308 μs surpassing the indiscernible phosphorescence of [BTPP]X salt. More importantly, this halide family presents robust RTP emission with nearly unattenuated PLQY in water and harsh condition (acid and basic aqueous solution) over half a year. The highly efficient integrated afterglow and STE phosphorescence as well as ultrahigh aqueous state RTP realize multiple anti‐counterfeiting applications in wide chemical environments. [ABSTRACT FROM AUTHOR]

Low-dimensional organic–inorganic hybrid lead halide perovskites have attracted much interest in solid-state lighting and displays, but the toxicity and instability of lead halide are obstacles to their industrial applications, which must be overcome. As an alternative, Cu(I)-based hybrid metal halides have emerged as a new type of luminescent material owing to their diversified structure, adjustable luminescence, low toxicity and low cost. Herein, we report three one-dimensional (1D) hybrid Cu(I)-based halides with the general formula ACu2Br4 (A = [(Me)4-Pipz]2+ and [BuDA]2+ and [TMEDA]2+). These 1D hybrid Cu(I) halides display stable broadband blue emission with maximum emission peaks in the range of 445–474 nm and the highest photoluminescence quantum yield of 37.8%. Furthermore, in-depth experimental and theoretical investigations revealed that the broadband blue emissions originate from the radiative recombination of self-trapped excitons. Most importantly, there is no structural degradation and attenuation of emission intensity even after continuously soaking these halides in water for at least two months, demonstrating their ultra-high anti-water stability. Hirshfeld surface analysis shows that a large number of weak hydrogen bonds can protect the inorganic skeleton from degradation due to water. This work provides a new strategy for the design of water-stable Cu(I)-based halides with efficient blue emission and wide potential applications in humid environments. [ABSTRACT FROM AUTHOR]

We established myocardial injury models in vivo and in vitro to investigate the cardioprotective effect of gomisin D obtained from Schisandra chinensis. Gomisin D significantly inhibited isoproterenol-induced apoptosis and hypertrophy in H9C2 cells. Gomisin D decreased serum BNP, ANP, CK-MB, cTn-T levels and histopathological alterations, and inhibited myocardial hypertrophy in mice. In mechanisms research, gomisin D reversed ISO-induced accumulation of intracellular ROS and Ca2+. Gomisin D further improved mitochondrial energy metabolism disorders by regulating the TCA cycle. These results demonstrated that gomisin D had a significant effect on isoproterenol-induced myocardial injury by inhibiting oxidative stress, calcium overload and improving mitochondrial energy metabolism. [ABSTRACT FROM AUTHOR]