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IntroductionIn craniofacial surgery, magnetic navigation systems can effectively extend the doctor's limited visual range, improve their surgical precision, shorten the operation time, and reduce the incidence of surgical complications. Owing to the ease of magnetic navigation, the accuracy of the magnetic navigation system is affected by various equipment in the operating room. Therefore, its large-scale application is lacking because the navigation accuracy requirement can be extremely high during craniofacial surgery. Therefore, the accuracy of magnetic navigation systems is crucial. Various surgical instruments have been evaluated to effectively reduce the interference of magnetic navigation systems with surgical instruments. In craniofacial surgery, magnetic navigation systems can effectively extend the doctor's limited visual range, improve their surgical precision, shorten the operation time, and reduce the incidence of surgical complications. Owing to the ease of magnetic navigation, the accuracy of the magnetic navigation system is affected by various equipment in the operating room. Therefore, its large-scale application is lacking because the navigation accuracy requirement can be extremely high during craniofacial surgery. Therefore, the accuracy of magnetic navigation systems is crucial. Various surgical instruments have been evaluated to effectively reduce the interference of magnetic navigation systems with surgical instruments. In the surgical environment, the use of surgical instruments during mandibular surgery was simulated by selecting several conventional surgical instruments to record errors in the magnetic navigation system. The fluctuation values of the magnetic navigation errors were subsequently estimated and changes in its accuracy measured. MATLAB was used to calculate and analyze the fluctuations of the magnetic navigation errors. As results, the high-frequency electrosurgical system caused the greatest interference with the magnetic navigation system during surgery while powered on, with a maximum fluctuation error value of 1.8120 mm, and the maximum fluctuation error values of the stitch scissors, teeth forceps, and a needle holder were 1.3662, 1.3781, and 0.3912 mm, respectively. The closer the instrument is to the magnetic field generator or navigation target, the greater its impact. In conclusion, stitch scissors, teeth forceps, a needle holder, and the high-frequency electrosurgical system all affect magnetic navigation system accuracy. Therefore, it is necessary to avoid magnetic navigation system use and surgical instrument disturbances during surgery or select surgical instruments that do not interfere with the system. Surgical instruments must be evaluated for electromagnetic interference before they can be used in surgery with a magnetic navigation system. [ABSTRACT FROM AUTHOR]

In this work, a solvothermal strategy combined with following calcination was developed to synthesize a mesoporous NaTi2(PO4)3/CMK-3 (NTP/C) nanohybrid as a high-performance anode for next-generation Na-ion batteries (NIBs). Physicochemical characterizations demonstrated that NASICON-type structured NaTi2(PO4)3 (NTP) nanoparticles (NPs) with high crystallinity were homogeneously embedded in the mesoporous CMK-3 matrix. The mesoporous NTP/C nanohybrid as the anode for NIBs exhibited excellent electrochemical performance with high charge–discharge capability, good rate performance and long cycle life in non-aqueous electrolytes. The nanohybrid electrode delivered large specific capacities of 101, 76, 58, 39 mA h g−1 at 0.2, 0.5, 1.0 and 2.0 C, respectively, and retained it as high as 62.9 mA h g−1 even after 1000 cycles at 0.5 C. Compared to the pure NTP electrode, the mesoporous NTP/C hybrid anode with unique “meso–nano” architecture exhibited better Na-storage ability and indicated its promising application for rechargeable NIBs. [ABSTRACT FROM AUTHOR]

Rechargeable aluminum-ion batteries have attracted increasing attention owing to the advantageous multivalent ion storage mechanism thus high theoretical capacity as well as inherent safety and low cost of using aluminum. However, their development has been largely impeded by the lack of suitable positive electrodes to provide both sufficient energy density and satisfactory rate capability. Here we report a candidate positive electrode based on ternary metal oxides, Fe 2 (MoO 4 ) 3 , which was assembled by cross-stacking of porous nanosheets, featuring superior rate performance and cycle stability, and most importantly a well-defined discharge voltage plateau near 1.9 V. Specifically, the positive electrode is able to deliver reversible capacities of 239.3 mA h g -1 at 0.2 A g -1 and 73.4 mA h g -1 at 8.0 A g -1 , and retains 126.5 mA h g -1 at 1.0 A g -1 impressively, after 2000 cycles. Furthermore, the aluminum-storage mechanism operating on Al 3+ intercalation in this positive electrode is demonstrated for the first time via combined in situ and ex situ characterization studies and density functional theory calculations. This work not only explores potential positive electrodes for aluminum-based batteries but also sheds light on the fundamental charge storage mechanism within the electrode., Competing Interests: The authors declare no conflict of interest., (This journal is © The Royal Society of Chemistry.)

The pursuit of electrochemical energy storage has led to a pressing need on materials with high capacities and energy densities; however, further progress is plagued by the restrictive capacity (372 mAh g -1 ) of conventional graphite materials. Tungsten trioxide (WO 3 )-based anodes feature high theoretical capacity (693 mAh g -1 ), suitable potential, and affordable cost, arousing ever-increasing attention and intense efforts. Nonetheless, developing high-performance WO 3 electrodes that accommodate lithium ions remains a daunting challenge on account of sluggish kinetics characteristics and large volume strain. Herein, the well-designed hierarchical WO 3 agglomerates assembled with straight and parallel aligned nanoribbons are fabricated and evaluated as an anode of lithium-ion batteries (LIBs), which exhibits an ultra-high capacity and excellent rate capability. At a current density of 1,000 mA g -1 , a reversible capacity as high as 522.7 mAh g -1 can be maintained after 800 cycles, corresponding to a high capacity retention of ∼80%, demonstrating an exceptional long-durability cyclic performance. Furthermore, the mechanistic studies on the lithium storage processes of WO 3 are probed, providing a foundation for further optimizations and rational designs. These results indicate that the well-designed hierarchical WO 3 agglomerates display great potential for applications in the field of high-performance LIBs., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2022 Dong, Liu, Zhu, Ou, Zhang, Lan, Guo, Zhang, Liu, Ju, Miao, Zhang and Li.)

Decreasing particle size is an efficient strategy for improving the lithium storage properties of Li 3 V 2 (PO 4 ) 3 (LVP) due to a shorter transport distances of lithium ion and electrons. However, designing and synthesizing LVP nanocrystals (NCs) with sizes smaller than 30 nm remains a challenge. In this work, we developed a facile approach for the fabrication of the monodisperse LVP NCs through a robust high-temperature organic-phase method. The thermodynamics of the synthesis and the possible reaction mechanism were investigated. The results indicate that the organic-phase environment (at 320 °C) may not thermodynamically allow the crystallization of LVP. Nevertheless, oleic acid (OA) and oleylamine (OAm) are essential as capping agents to hinder the agglomeration and growth of the particles. Based on the thermodynamic need, calcination is essential to prepare LVP. The surface electronic conductivity of the LVP NCs was enhanced through a subsequent carbon-coating treatment. The optimum combination of reduction and carbon coating is very favorable for the kinetics of electron transfer and lithium ion diffusion. Therefore, the fabricated LVP@C NCs exhibit superior lithium storage properties with excellent rate capability (84 mA h g -1 at a rate of 20C) and perfect cyclic stability (96.2% capacity retention after 200 cycles at 5C), demonstrating their potential application in high-performance lithium-ion batteries., Competing Interests: There are no conflicts to declare., (This journal is © The Royal Society of Chemistry.)

Objective: In this study, we have detected the expression of STC2 protein in laryngeal cancer and The safe incisal margin by immunohistochemical staining, to evaluate its correlation with clinical features and the prognosis value in laryngeal squamous cell cancer., Method: Eighty-one paraffin-embedd specimens of patients who underwent surgery for laryngeal cancer were collected. Clinical data, including date of birth, gender, tumor subsite, tumor stage, RT, and survival status have been recorded. The samples including laryngeal cancer tissues and the safe incisal margin were analyzed for the expression of STC2 protein by immunohistochemical staining. We analyzed the correlations with STC2 expression level and clinical data with software SPSS 18. 0., Result: (1)fifty-six cases in 81 cases (69. 1 %) are positive. In 30 cases of the safe incisal margin tissues, STC2 is not expressed, which shows statistically significant differences between the two groups (P<0. 05). (2)Overexpression of STC2 in laryngeal cancer were correlated with the tumor clinical stage and N stage, T stage, tumor site location and histological grade (P<0. 05), but not with genderor age (P> 0. 05). (3)The result showed that the 3-year survival rate is 74. 1%, according to the survival analysis by STC2, STC2 positive group has poorer outcome versus the negative group. (4)The clinical stage displayed the independent value in predicting the tumor prognosis of laryngeal cancer (P<0. 05), not the expression level of STC2., Conclusion: Overexpression of STC2 in laryngeal cancer patients is correlated with poor outcome, which means STC2 positive group has poorer prognosis than the STC2 negative group.