一种柔性多铁性器件

本发明提供了一种新型结构的柔性多铁性器件。该器件包括柔性多铁材料与支撑体；其中，支撑体与柔性多铁材料的接触面分布在柔性多铁材料的底部边缘，并且柔性多铁材料以该接触面为支撑呈悬空状。实验证实，这种结构一方面保证了该器件的“自支撑性”，从而能够避免柔性多铁材料底面直接置于其他刚性支撑体等表面而导致受到钉扎束缚作用大大减弱磁电耦合效应；另一方面保证了该器件的“柔性”，由于柔性多铁材料大部分呈悬空状，使磁电耦合过程中产生的震动被尽可能放大，从而能够实现较大的磁电耦合效应，因此，该器件在磁传感器和能量收集等领域具有广泛的应用前景

双相激波摆杆活齿传动齿廓设计与分析

为实现双相激波摆杆活齿传动过程状态可控,设定摆杆活齿复摆函数,运用复数矢量法对激波器齿廓进行反求设计,建立激波器齿廓方程,采用轮系转化法和包络原理逆向导出中心轮齿廓方程,得到激波器和中心轮同一形式理论齿廓方程。基于同一化数学模型分析,阐释了中心轮齿廓曲率半径变化规律,确定了等距齿廓不干涉条件,定性分析了结构参数与中心轮最小曲率半径关联影响曲线,制定了结构参数选取原则,对传动过程中摆杆活齿速度变化规律进行了分析。设计实例分析结果有助于实现预先给定工况下双相激波摆杆活齿传动设计系列化、参数化

对数修形复合滚柱活齿啮合刚度及承载性能研究

针对轮边减速系统大承载、长寿命的发展要求，提出一种对数修形复合滚柱活齿结构。结合当前对空心滚柱接触变形的研究，通过引入设计参数Δc和Δe，提出了一种计算对数修形复合滚柱啮合变形量的方法，分析了填充度和不同滚柱对啮合刚度的影响规律，利用有限元方法对不同滚柱啮合线处的等效应力分布进行了对比分析。结果表明，相同载荷条件下，对数修形复合滚柱活齿的啮合刚度略高于空心滚柱活齿的啮合刚度，且随填充度增大，啮合刚度减小；对数修形复合滚柱可有效改善边缘应力集中现象，使最大等效应力明显降低

一种应力辅助磁存储器件、其制备方法以及磁场写入方法

本发明提供了一种应力辅助磁存储器件。该器件具有多层膜结构，依次为衬底层、变磁性材料层、磁性介质层以及保护层。通过对柔性衬底层施加形变产生应力，或者对铁电衬底层施加电压并通过压电效应产生应力，在应力作用下使变磁性材料处于铁磁或者反铁磁的状态；当磁场写入时控制应力使其处于铁磁状态，通过耦合作用降低磁性介质层的矫顽力，从而降低写入磁头的写入磁场，降低能耗；当磁场写入完毕后控制应力使变磁性材料处于反铁磁状态，磁性介质层的矫顽力恢复到原来的状态，从而增加存储密度，提高磁性存储器件的数据存储安全性

一种单轴磁各向异性薄膜的制备方法

本发明公开了一种单轴磁各向异性薄膜的制备方法。该方法选用具有各向异性热膨胀系数的衬底，将其安装在加热器上，加热器上安装温度传感器，使加热器、温度传感器构成闭环反馈回路，加热衬底至预设温度，使衬底受热膨胀或收缩，然后利用磁控溅射或脉冲激光沉积的方法在膨胀或收缩后的衬底上生长磁性薄膜，最后将衬底温度降至室温，使衬底收缩或膨胀，从而对磁性薄膜产生一定的压应力或张应力，得到单轴磁各向异性薄膜。与现有技术相比，本发明的制备方法结构设计简单巧妙、通过控制衬底温度的控制能够实现面内单轴磁各向异性可控的目的，具有良好的工业应用前景

Application of improved auricular acupoint pressing in patients with knee osteoarthritis of Qi stagnation and blood stasis type (改良式耳穴贴压在气滞血瘀型膝骨关节炎患者中的应用)

Objective To observe the application effect of improved auricular acupoint pressing therapy in patients with knee osteoarthritis (KOA) of Qi stagnation and blood stasis type. Methods A total of 64 patients with KOA of Qi stagnation and blood stasis type were selected as the research subjects, and were randomly divided into a control group and an experimental group, with 32 cases in each group, according to the random number table method. The control group was given routine auricular acupoint pressing therapy, and desensitization tape containing Wangbuliuxing seeds was applied to the acupoints. The experimental group implemented an improved auricular acupoint pressing on the basis of the control group, preparing Shujin Huoxue Qutong ointment with a size of 0. 6 cm×0. 6 cm and adding Wangbuliuxing seeds for auricular acupoint. Both groups were given 3～5 times a day of treatment, 0. 5～2 minutes per time per acupoint. The intervention lasted for 10 consecutive days. Visual Analog Scale (VAS), Beta Endorphin (β - EP) levels, and Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) were used to compare the pain symptoms and knee joint function status between two groups of patients. Results The VAS scores of the intervention groups were both reduced after 3 days and 7 days, but the difference was not statistically significant (P＞0. 05); After 10 days and 14 days of intervention, the VAS scores of the experimental group were lower than those of the control group, and the difference was statistically significant (P＜0. 05). After 7 days of intervention, the levels of β-EP in both groups increased, but there was no statistical significance (P＞0. 05); After 14 days of intervention, the levels of β - EP in the experimental group were higher than those in the control group, and the difference was statistically significant (P＜0. 05). After 7 days of intervention, the WOMAC scores of both groups decreased, but there was no statistical significance (P＞0. 05); After 14 days of intervention, the WOMAC scores of the experimental group were lower than those of the control group, and the difference was statistically significant (P＜0. 05). The overall effective rate of experimental group was higher than that of the control group(93. 75% vs. 81. 25%, P＜0. 05). Conclusion Improved auricular acupoint pressing can alleviate chronic pain symptoms, improve joint stiffness, and enhance joint mobility in KOA patients with qi stagnation and blood stasis. (目的 观察改良式耳穴贴压在气滞血瘀型膝骨关节炎(KOA)患者中的应用效果。方法 64例气滞血瘀型KOA患者按照随机数字表法分为对照组和试验组, 各32例。对照组给予骨科常规耳穴贴压, 将含有王不留行籽的脱敏胶布对准穴位进行贴压; 试验组在对照组基础上实施改良式耳穴贴压, 将舒筋活血祛痛膏制备成 0. 6 cm×0. 6 cm尺寸, 加王不留行籽制备耳穴贴压。两组均以指腹对捏按压3～5次/d, 每个穴位0. 5～2 min/次, 连续干预10 d。采用视觉模拟疼痛评分(VAS)、β-内啡肽(β-EP)水平、膝关节炎指数评分(WOMAC)比较两组患者的疼痛症状和膝关节功能状态, 评价干预效果。结果 干预3 d、7 d两组的VAS评分均降低, 但差异无统计学意义(P＞0. 05); 干预10 d、14 d后试验组的VAS评分低于对照组, 差异有统计学意义(P＜0. 05)。干预后7 d两组的β-EP水平均升高, 但差异无统计学意义(P＞0. 05); 干预14 d后试验组的β-EP水平高于对照组, 差异有统计学意义(P＜0. 05)。干预后7 d两组的WOMAC评分均降低, 但差异无统计学意义(P＞0. 05); 干预14 d后试验组的WOMAC评分低于对照组, 差异有统计学意义(P＜0. 05)。试验组有效率(93. 75%)高于对照组(81. 25%), 差异有统计学意义(P＜0. 05)。结论 改良式耳穴贴压能缓解气滞血瘀型KOA患者的慢性疼痛症状, 改善关节僵硬, 增加关节活动度。

Determination of the number of ψ(3686) events taken at BESIII

The number of ψ(3686) events collected by the BESIII detector during the 2021 run period is determined to be (2259.3±11.1)×106 by counting inclusive ψ(3686) hadronic events. The uncertainty is systematic and the statistical uncertainty is negligible. Meanwhile, the numbers of ψ(3686) events collected during the 2009 and 2012 run periods are updated to be (107.7±0.6)×106 and (345.4±2.6)×106, respectively. Both numbers are consistent with the previous measurements within one standard deviation. The total number of ψ(3686) events in the three data samples is (2712.4±14.3)×10^

Prediction of Energy Resolution in the JUNO Experiment

International audienceThis paper presents the energy resolution study in the JUNO experiment, incorporating the latest knowledge acquired during the detector construction phase. The determination of neutrino mass ordering in JUNO requires an exceptional energy resolution better than 3% at 1 MeV. To achieve this ambitious goal, significant efforts have been undertaken in the design and production of the key components of the JUNO detector. Various factors affecting the detection of inverse beta decay signals have an impact on the energy resolution, extending beyond the statistical fluctuations of the detected number of photons, such as the properties of liquid scintillator, performance of photomultiplier tubes, and the energy reconstruction algorithm. To account for these effects, a full JUNO simulation and reconstruction approach is employed. This enables the modeling of all relevant effects and the evaluation of associated inputs to accurately estimate the energy resolution. The study reveals an energy resolution of 2.95% at 1 MeV. Furthermore, the study assesses the contribution of major effects to the overall energy resolution budget. This analysis serves as a reference for interpreting future measurements of energy resolution during JUNO data taking. Moreover, it provides a guideline in comprehending the energy resolution characteristics of liquid scintillator-based detectors