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High-capacity power battery can be attained through the elevation of the cut-off voltage for LiNi 0.83 Co 0.12 Mn 0.05 O 2 high-nickel material. Nevertheless, unstable lattice oxygen would be released during the lithium deep extraction. To solve the above issues, the electronic structure is reconstructed by substituting Li + ions with Y 3+ ions. The dopant within the Li layer could transfer electrons to the adjacent lattice oxygen. Subsequently, the accumulated electrons in the oxygen site are transferred to nickel of highly valence state under the action of the reduction coupling mechanism. The modified strategy suppresses the generation of oxygen defects by regulating the local electronic structure, but more importantly, it reduces the concentration of highly reactive Ni 4+ species during the charging state, thus avoiding the evolution of an unexpected phase transition. Strengthening the coupling strength between the lithium layers and transition metal layers finally realizes the fast-charging performance improvement and the cycling stability enhancement under high voltage. Authors report on restructuring the electronic structure of a high-nickel material by substituting Li + ions with Y 3+ ions. This strategy suppresses the generation of oxygen defects with a reduction coupling mechanism improving high-voltage stability.

Background Hidden blood loss (HBL) is a notable complication in spinal endoscopic procedures. This study aims to compare tissue damage and hidden blood loss between two minimally invasive spinal techniques: unilateral biportal endoscopic lumbar discectomy (UBE) and percutaneous endoscopic interlaminar discectomy (PEID). Furthermore, the study examines the risk factors contributing to hidden blood loss in each procedure. Patients and methods A single-center retrospective cohort study was conducted on 86 patients who underwent unilateral biportal endoscopic lumbar discectomy (UBE) and 73 patients who received percutaneous endoscopic interlaminar discectomy (PEID) between January 2021 and December 2023.Demographic data, blood loss parameters, and serum levels of creatine kinase (CK) and C-reactive protein (CRP) were recorded. Pearson or Spearman correlation analyses were conducted to evaluate associations between patient characteristics and HBL. Additionally, multiple linear regression analysis was used to identify independent risk factors for HBL. Results A total of 159 consecutive patients were included in this study, consisting of 83 females and 76 males. The average hidden blood loss (HBL) was 431.00 ± 160.52 ml in the UBE group and 328.40 ± 87.71 ml in the PEID group, showing a statistically significant difference ( P  < 0.05). Pearson or Spearman correlation analysis indicated that in the UBE group, HBL was associated with operation time, preoperative hematocrit (Hct), ASA classification, and paraspinal muscle thickness. In the PEID group, HBL was correlated with operation time, preoperative activated partial thromboplastin time (APTT), paraspinal muscle thickness, and the presence of diabetes ( P  < 0.05). Multiple linear regression analysis demonstrated a positive correlation between HBL and operation time in both groups ( P  < 0.05), identifying operation time as an independent risk factor for HBL. Furthermore, CRP and CK levels were generally lower in the PEID group compared to the UBE group, particularly on postoperative day 3 for CRP and postoperative day 1 for CK. Both total blood loss and hidden blood loss were significantly lower in the PEID group than in the UBE group. Conclusion Compared to UBE, PEID shows superior results regarding surgical trauma, total blood loss, hidden blood loss (HBL), and postoperative hematocrit (Hct) reduction. Consequently, PEID is recommended as the treatment of choice for younger patients or those with compromised baseline perioperative conditions.Additionally, Hidden blood loss remains a critical factor, and surgical duration presents a shared risk in both procedures.

Construction of ordered structures that respond rapidly to environmental stimuli has fascinating possibilities for utilization in energy storage, wearable electronics, and biotechnology. Silicon/carbon (Si/C) anodes with extremely high energy densities have sparked widespread interest for lithium‐ion batteries (LIBs), while their implementation is constrained via mechanical structure deterioration, continued growth of the solid electrolyte interface (SEI), and cycling instability. In this study, a piezoelectric Bi 0.5 Na 0.5 TiO 3 (BNT) layer is facilely deposited onto Si/C@CNTs anodes to drive piezoelectric fields upon large volume expansion of Si/C@CNTs electrode materials, resulting in the modulation of interfacial Li + kinetics during cycling and providing an electrochemical reaction with a mechanically robust and chemically stable substrate. In‐depth investigations into theoretical computation, multi‐scale in/ex situ characterizations, and finite element analysis reveal that the improved structural stability, suppressed volume variations, and controlled ion transportation are responsible for the improvement mechanism of BNT decorating. These discoveries provide insight into the surface coupling technique between mechanical and electric fields to control the interfacial Li + kinetics behavior and improve structural stability for alloy‐based anodes, which will also spark a great deal attention from researchers and technologists in multifunctional surface engineering for electrochemical systems.

Owing to their advantages, such as a high energy density, low operating potential, high abundance, and low cost, rechargeable silicon (Si) anode lithium-ion batteries (LIBs) have attracted considerable interest. Significant advancements in Si-based LIBs have been made over the past decade. Nevertheless, because the cycle instability is a crucial factor in the half/full-battery design and significantly affects the consumption of active components and the weight of the assembled battery, it has become a concern in recent years. This paper presents a thorough analysis of the recent developments in the enhancement methods for the stability of LIBs. Comprehensive in situ and operando characterizations are performed to thoroughly evaluate the electrochemical reactions, structural evolution, and degradation processes. Approaches for enhancing the cycle stability of Si anodes are systematically divided from a design perspective into several categories, such as the structural regulation, interfacial design, binder architecture, and electrolyte additives. The advantages and disadvantages of several methods are emphasized and thoroughly evaluated, offering insightful information for the logical design and advancement of cutting-edge solutions to address the deteriorating low-cycle stability of silicon-based LIBs. Finally, the conclusions and potential future research perspectives for promoting the cycling instability of silicon-based LIBs are presented. Graphical Abstract

Objectives To explore an optimal machine learning (ML) model trained on MRI-based radiomic features to differentiate benign from malignant indistinguishable vertebral compression fractures (VCFs). Methods This retrospective study included patients within 6 weeks of back pain (non-traumatic) who underwent MRI and were diagnosed with benign and malignant indistinguishable VCFs. The two cohorts were retrospectively recruited from the Affiliated Hospital of Qingdao University (QUH) and Qinghai Red Cross Hospital (QRCH). Three hundred seventy-six participants from QUH were divided into the training ( n  = 263) and validation ( n  = 113) cohort based on the date of MRI examination. One hundred three participants from QRCH were used to evaluate the external generalizability of our prediction models. A total of 1045 radiomic features were extracted from each region of interest (ROI) and used to establish the models. The prediction models were established based on 7 different classifiers. Results These models showed favorable efficacy in differentiating benign from malignant indistinguishable VCFs. However, our Gaussian naïve Bayes (GNB) model attained higher AUC and accuracy (0.86, 87.61%) than the other classifiers in validation cohort. It also remains the high accuracy and sensitivity for the external test cohort. Conclusions Our GNB model performed better than the other models in the present study, suggesting that it may be more useful for differentiating indistinguishable benign form malignant VCFs. Key Points • The differential diagnosis of benign and malignant indistinguishable VCFs based on MRI is rather difficult for spine surgeons or radiologists . • Our ML models facilitate the differential diagnosis of benign and malignant indistinguishable VCFs with improved diagnostic efficacy . • Our GNB model had the high accuracy and sensitivity for clinical application .

Construction of ordered structures that respond rapidly to environmental stimuli has fascinating possibilities for utilization in energy storage, wearable electronics, and biotechnology. Silicon/carbon (Si/C) anodes with extremely high energy densities have sparked widespread interest for lithium‐ion batteries (LIBs), while their implementation is constrained via mechanical structure deterioration, continued growth of the solid electrolyte interface (SEI), and cycling instability. In this study, a piezoelectric Bi0.5Na0.5TiO3 (BNT) layer is facilely deposited onto Si/C@CNTs anodes to drive piezoelectric fields upon large volume expansion of Si/C@CNTs electrode materials, resulting in the modulation of interfacial Li+ kinetics during cycling and providing an electrochemical reaction with a mechanically robust and chemically stable substrate. In‐depth investigations into theoretical computation, multi‐scale in/ex situ characterizations, and finite element analysis reveal that the improved structural stability, suppressed volume variations, and controlled ion transportation are responsible for the improvement mechanism of BNT decorating. These discoveries provide insight into the surface coupling technique between mechanical and electric fields to control the interfacial Li+ kinetics behavior and improve structural stability for alloy‐based anodes, which will also spark a great deal attention from researchers and technologists in multifunctional surface engineering for electrochemical systems. The decorated Bi0.5Na0.5TiO3 with intrinsic characteristic of stress response at the surface of active Si/C induces a local electric field, which significantly promotes Li+ diffusion at the cathode–electrolyte interphase. The application of the “initiative” function interphase material herein contributes to the comprehension of interphase engineering in a broad range of applications in the electrochemical and energy conversion community.

High-capacity power battery can be attained through the elevation of the cut-off voltage for LiNi Co Mn O high-nickel material. Nevertheless, unstable lattice oxygen would be released during the lithium deep extraction. To solve the above issues, the electronic structure is reconstructed by substituting Li ions with Y ions. The dopant within the Li layer could transfer electrons to the adjacent lattice oxygen. Subsequently, the accumulated electrons in the oxygen site are transferred to nickel of highly valence state under the action of the reduction coupling mechanism. The modified strategy suppresses the generation of oxygen defects by regulating the local electronic structure, but more importantly, it reduces the concentration of highly reactive Ni species during the charging state, thus avoiding the evolution of an unexpected phase transition. Strengthening the coupling strength between the lithium layers and transition metal layers finally realizes the fast-charging performance improvement and the cycling stability enhancement under high voltage.

Teaching evaluation on the industrial design teaching in higher vocational specialized curriculum, we not only take notice of the final results of the study of the students, but also more attention should be focused on student's learning process. Working by the tasks students can experience unceasingly progress and the joy of success. They may establish confidence to promote the all-round development of students' comprehensive ability. This article takes an example of the vocational program, \"the electrical control technology\". From the connotation of the project course teaching evaluation system, the article expounds construction of professional course evaluation system, implementation process and the teaching effect on project teaching.

Integrating distinct functional reaction sites within a single photocatalyst offers a promising approach for enhancing the photocatalytic H 2 evolution by water splitting. However, the synergy between the dual active sites is hindered by suboptimal electronic states arising from the uniform coordination environments. Here we demonstrate a strategy for enhancing the synergy between Pt single atoms and nanoparticles by modulating the coordination environment. The optimal boron doped catalyst with B-Pt-O asymmetric coordination achieves a H 2 evolution rate of 627.6 mmol g -1 h -1 , with an apparent quantum efficiency of 98.4%. Experimental and theoretical analysis reveal that the asymmetric coordination structure redistributes the electron density of Pt cocatalysts, promoting charge carrier separation, optimizing the dissociation and adsorption-desorption of the intermediate H 2 O* and H* on the dual sites. The findings highlight the importance of asymmetric coordination facilitates the photogenerated carrier transfer and surface reactions for efficient photocatalytic H 2 evolution. Photocatalytic water splitting is hindered by inefficient cooperation between catalytic sites. Here, the authors report that asymmetric Pt coordination enables a strong synergy between single-atom sites and nanoparticles, delivering efficient photocatalytic hydrogen production.

A strategy was proposed for the synthesis of Mo2C/C composite as an efficient electrocatalyst through electrospinning and calcination. PVP and PAN were utilized as electrospinning precursors for comparative analysis. Morphological characterization revealed that an electrospinning solution with the viscosity in the range of 2–5 mPa·S was conducive to the formation of spherical morphology. Under calcination at nitrogen atmosphere, as-electrospun Mo@PVP-1 and Mo@PAN-1 samples transformed into Mo2C/C with bead-like structure at 900 and 800 °C, respectively. Compared to PVP, PAN exhibited greater resistance to deformation at elevated temperature, resulting in better-dispersed spherical Mo2C/C composite. The synthesized Mo2C/C exhibited good electrocatalytic activity for hydrogen evolution reaction. The Tafel slopes of Mo2C/C prepared from Mo@PVP-1-900 and Mo@PAN-1-800 were 75.85 and 164.7 mV·dec−1, respectively. This work contributes to the understanding of synthetic process of spherical Mo2C/C composites through electrospinning, providing an effective way to improve material performance.Mo2C/C composites were synthesized by calcination with different polymer solutions (PAN and PVP) by electrostatic spraying, and their performance as catalysts was tested.