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Rechargeable Li‐CO2 batteries are considered as a promising carbon‐neutral energy storage technology owing to their ultra‐high energy density and efficient CO2 capture capability. However, the sluggish CO2 reduction/evolution kinetics impedes their practical application, which leads to huge overpotentials and poor cyclability. Multi‐element transit metal oxides (TMOs) are demonstrated as effective cathodic catalysts for Li‐CO2 batteries. But there are no reports on the integration of defect engineering on multi‐element TMOs. Herein, the oxygen vacancy‐bearing Li‐Ni‐Co‐Mn multi‐oxide (Re‐NCM‐H3) catalyst with the α‐NaFeO2‐type structure is first fabricated by annealing the NiCoMn precursor that derived from spent ternary LiNi0.8Co0.1Mn0.1O2 cathode, in H2 at 300 °C. As demonstrated by experimental results and theory calculations, the introduction of moderate oxygen vacancy has optimized electronic state near the Fermi level (Ef), eventually improving CO2 adsorption and charge transfer. Therefore, the Li‐CO2 batteries with Re‐NCM‐H3 catalyst deliver a high capacity (11808.9 mAh g−1), a lower overpotential (1.54 V), as well as excellent stability over 216 cycles at 100 mA g−1 and 165 cycles at 400 mA g−1. This study not only opens up a sustainable application of spent ternary cathode, but also validates the potential of multi‐element TMO catalysts with oxygen defects for high‐efficiency Li‐CO2 batteries. [ABSTRACT FROM AUTHOR]

Objective: To investigate the correlation between magnetic resonance imaging-based vertebral bone quality (VBQ) score and screw loosening after dynamic pedicle screw fixation with polyetheretherketone (PEEK) rods, and evaluate its predictive value. Methods: A retrospective analysis was conducted on the patients who underwent dynamic pedicle screw fixation with PEEK rods from March 2017 to June 2022. Data on age, sex, body mass index, hypertension, diabetes, hyperlipidemia history, long-term smoking, alcohol consumption, VBQ score, L1–4 average Hounsfield unit (HU) value, surgical fixation length, and the lowest instrumented vertebra were collected. Logistic regression analysis was employed to assess the relationship between VBQ score and pedicle screw loosening (PSL). Results: A total of 24 patients experienced PSL after surgery (20.5%). PSL group and non-PSL group showed statistical differences in age, number of fixed segments, fixation to the sacrum, L1–4 average HU value, and VBQ score (p < 0.05). The VBQ score in the PSL group was higher than that in the non-PSL group (3.56 ± 0.45 vs. 2.77 ± 0.31, p < 0.001). In logistic regression analysis, VBQ score (odds ratio, 3.425; 95% confidence interval, 1.552–8.279) were identified as independent risk factors for screw loosening. The area under the receiver operating characteristic curve for VBQ score predicting PSL was 0.819 (p < 0.05), with the optimal threshold of 3.15 (sensitivity, 83.1%; specificity, 80.5%). Conclusion: The VBQ score can independently predict postoperative screw loosening in patients undergoing lumbar dynamic pedicle screw fixation with PEEK rods, and its predictive value is comparable to HU value. [ABSTRACT FROM AUTHOR]

The current study examined whether moral disengagement would mediate the association between adolescents' teacher–student relationships and classroom incivility and sex and age differences in this mediation model. We also examined whether the mediating effect of moral disengagement would be moderated by negative coping styles. Participants comprised 2646 Chinese students (mean age = 13.85 years, SD = 1.45). Results indicated that teacher–student relationships were significantly and negatively associated with adolescents' classroom incivility and moral disengagement mediated this association. Furthermore, this mediating process differed between males and females as well as early and middle adolescents. Specifically, males were more likely to use moral disengagement strategies to engage in classroom incivility than females. Age moderated the association between teacher–student relationships and moral disengagement as well as moral disengagement and classroom incivility, and these two associations became stronger for early adolescents than for middle adolescents. Moreover, negative coping styles moderated the association between teacher–student relationships and classroom incivility and the association between moral disengagement and classroom incivility. The direct association between teacher–student relationships and classroom incivility became nonsignificant for adolescents with high negative coping styles. The study contributes to clarifying the mediating and moderating mechanisms underlying the effect of teacher–student relationships on adolescents' classroom incivility. Practitioner points: Teacher–student relationships were negatively associated with adolescents' classroom incivility and moral disengagement significantly mediated this association.The mediating effect of moral disengagement differed between males and females as well as early and middle adolescents.Negative coping style moderated the link between teacher–student relationships and classroom incivility as well as moral disengagement and classroom incivility. [ABSTRACT FROM AUTHOR]

Seven infilled reinforced concrete (RC) frames strengthening with profiled steel sheet bracing are researched on the effect of axial compression ratio (0.3~0.9). Hysteretic curves, envelope curves, stiffness degradation curves, ductility and energy dissipation capacity are analysed in the finite element. The results show that profiled steel sheet bracing plays a good role in reinforcing infilled RC frames and the hysteretic curves express plump relatively. With the increase of axial compression ratio, the bearing capacity is improved significantly. The axial compression ratio has little effect on the lateral stiffness of the structure, and the initial stiffness increases slightly with the increase of axial compression ratio. The structure has good ductility when the axial compression ratio is less than 0.6. The ductility is declined with the increase of axial compression ratio. As the displacement increases, the energy dissipation capacity of the specimens increases. However, the energy dissipation capacity is reduced as the increase of axial compression ratio.

To obtain a magnetically separable, low-cost and highly efficient reduction catalyst, microbial carbon-loaded bimetallic palladium/iron nanoparticles (MC-FePd3 NPs) were synthesized in this study by using waste yeast residue doped with iron during the preparation process of microbial carbon-loaded monometallic palladium nanoparticles (MC-Pd NPs). The morphology, crystal structure, magnetic properties and catalytic performance of MC-FePd3 NPs for the reduction of p -nitrophenol (p-NP) were investigated by various characterization techniques, such as SEM-EDS, TEM, XRD, PPMS-9 and UV–vis spectroscopy. The catalytic experiments showed that the MC-FePd3 NPs prepared under pyrolysis conditions at 700 °C had an apparent rate constant of 1.85 × 10−1 s−1 which is better than the rate constants of MC-Pd NPs and other palladium-based nanocatalytic materials reported so far. The amount of palladium used in the synthesis of MC-FePd3 NPs was half that of MC-Pd NPs. The catalyst exhibited soft magnetic ordering behavior and still showed a catalytic efficiency of 97.4% after five consecutive reaction cycles. Furthermore, employing MC-FePd3 NPs reduces the costs of catalyst preparation and use in production. MC-FePd3 NPs with efficient catalytic properties, facile magnetic separation and recyclability, and low costs of preparation and use have considerable potential for industrial applications. [ABSTRACT FROM AUTHOR]