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Determination of a Cut-Off Point of a Scale for Achievement Motive in Geriatrics That Predicts the Frequency of Undertaking Instrumental Activities of Daily Living in Community-Dwelling Elderly People
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作者 Nobuyuki Sano Hisato Nakazono 《Advances in Aging Research》 2019年第6期107-118,共12页
Background: Among elderly people, rehabilitation is important for reducing the risk of falls and hospitalization and to maintain an independent life for longer. Motivation is a factor for elderly people to lead an act... Background: Among elderly people, rehabilitation is important for reducing the risk of falls and hospitalization and to maintain an independent life for longer. Motivation is a factor for elderly people to lead an active daily life and leave home more frequently. Purpose: The purposes of this study were to determine the optimal cut-off point in the Scale for Achievement Motive in Geriatrics (SAMG) that could identify individuals as inactive or active, based on the Frenchay Activities Index (FAI), and to compare characteristics between active and inactive groups classified by the cut-off point. Methods: A cross-sectional study of 285 community-dwelling elderly people measured SAMG and FAI and physical function. Receiver operating characteristic (ROC) analysis was used to calculate the area under the curve (AUC) that was the optimal cut-off point for the SAMG total score, with the associated sensitivity and 1-specificity when compared with the FAI results. Demographic parameters and physical function were compared between two groups defined by cut-off point. Results: The AUC was 0.78, the optimal cut-off for SAMG total score for indicating inactivity was ≤48, the sensitivity was 77.98% and the 1-specificity was 75.00%. The group with SAMG score >48 was characterized by a significantly higher proportion of women, fewer people sharing a house, and participation in more hobbies. Discussion: A cut-off point of 48 in the SAMG could be a predictive index of motivation toward goals for individuals with inactive daily activities. The group with score higher than the cut-off was characterized by more women, fewer people living together, and more hobbies than the group with lower scores. 展开更多
关键词 ACHIEVEMENT MOTIVE INSTRUMENTAL Activities of Daily Living cut-off point Preventive Care COMMUNITY-DWELLING Elderly People
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Determination of the Optimal Waist Circumference Cut-Off Points in Benin Adults
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作者 Victoire Damienne Agueh Charles Sossa +8 位作者 Dona Marius-Edgard Ouendo Noel M. Paraizo Colette Azandjemè Alphonse Kpozehouen Clémence Metonnou Jacques Saizonou Laurent T. Ouédraogo Michel Makoutodé Hélène Delisle 《Open Journal of Epidemiology》 2015年第4期217-228,共12页
Obesity is an independent risk factor for chronic diseases such as diabetes, cardiovascular diseases and certain cancers. Early detection of abdominal obesity followed by appropriate interventions will prevent associa... Obesity is an independent risk factor for chronic diseases such as diabetes, cardiovascular diseases and certain cancers. Early detection of abdominal obesity followed by appropriate interventions will prevent associated diseases. The objective was to determine optimal waist circumference (WC) cut-off points predictive of at least one other component of metabolic syndrome in Benin adults. This longitudinal and observational study included at the baseline 541 apparently healthy subjects aged 25 - 60 years randomly selected in the largest city of Cotonou (n = 200), the smaller-size city of Ouidah (n = 171) and rural surroundings of Ouidah (n = 170) in Benin. Components of the metabolic syndrome considered along with abdominal obesity were high blood pressure, high fasting glycaemia, low HDL-cholesterol and high triglycerides as defined by the Joint Interim Statement. After the baseline survey, the subjects were followed-up for four years. Complete data at baseline and four years later were available in 416 subjects. The receiver operating characteristic (ROC) curve for waist circumference to predict at least one other component of the metabolic syndrome was plotted and the Youden index was used to define the optimal cut-offs of WC. At the baseline of the study, the optimal WC cut-off point to predict the presence of at least one other component of the metabolic syndrome was 80 cm for men (sensitivity = 0.62, specificity = 0.65);the area under the ROC curve was 0.67 (IC 95%: 0.61-0.74). In women, the optimal WC cut-off point was 90 cm (sensitivity = 0.54, specificity = 0.80), and the area under the ROC curve was 0.68 (IC 95%: 0.62-0.75). These optimal cut-offs were similar four years later. Optimum WC cut-off points for both men and women in Benin differ from those currently recommended for sub-Saharan Africans. Therefore, waist circumference cut-off points for abdominal obesity need to be reconsidered for these populations. 展开更多
关键词 WAIST CIRCUMFERENCE cut-offs CARDIOMETABOLIC Risk BENIN
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基于改进PointNet++的中压电力线点云分类方法
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作者 雒建艳 《应用激光》 北大核心 2025年第3期146-158,共13页
针对中压电力线点云分类中存在的噪声干扰、分类精度低和鲁棒性不足的问题,提出一种基于改进PointNet++的中压电力线点云分类方法。首先,通过多种手段提取点云空间信息、几何特征以及局部几何特征等多维度特征,为点云单点构造40维特征向... 针对中压电力线点云分类中存在的噪声干扰、分类精度低和鲁棒性不足的问题,提出一种基于改进PointNet++的中压电力线点云分类方法。首先,通过多种手段提取点云空间信息、几何特征以及局部几何特征等多维度特征,为点云单点构造40维特征向量;然后对PointNet++进行改进,引入了点注意力模块(point attention module,PAM)和组注意力模块(group attention module,GAM),同时与层归一化(layer norm)和残差连接结构组合使用,用以增强其特征的细节捕捉能力,降低复杂环境对分类效果影响;最后采用某地机载采集的10 kV中压电力线走廊数据构建数据集,进行了方法验证。实验结果表明,所提方法在Precision、Recall和F_1-score上均优于传统机器学习方法和基于PointNet、PointNet++的深度学习方法。相较于PointNet++(XYZ+Features),所提方法在Precision、Recall和F_1-score上分别高出1.6个百分点、5.3个百分点和4.6个百分点,且通过可视化结果进一步验证了PAM和GAM的有效性。验证了所提方法在中压电力线点云的提取上更为精确,其结构特征更加清晰,且与周围环境的区分度更高。 展开更多
关键词 激光点云 注意力机制 pointNet++ 中压电力线 点云分类
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基于DI-PointNet的变电站主设备点云高精度语义分割方法 被引量:1
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作者 裴少通 孙海超 +2 位作者 孙志周 胡晨龙 祝雨馨 《电工技术学报》 北大核心 2025年第9期2917-2930,共14页
在变电站机器人巡检任务中,三维点云数据的高精度语义分割是关键技术之一,有助于机器人理解电力设备、障碍物和其他物体的空间布局。然而,现有的点云分割算法在变电站场景中的应用效果有限,准确度较低、计算复杂度高,难以实现对变电站... 在变电站机器人巡检任务中,三维点云数据的高精度语义分割是关键技术之一,有助于机器人理解电力设备、障碍物和其他物体的空间布局。然而,现有的点云分割算法在变电站场景中的应用效果有限,准确度较低、计算复杂度高,难以实现对变电站主设备点云的准确分割。为了解决这一问题,该文提出了一种基于PointNet++的DI-PointNet算法。首先,采用双层连续变换器模块增强点云之间的信息交互,有效地聚合长距离上下文,增大网络有效感受野;其次,通过分层键采样策略生成自注意力机制所需的键值,降低算法复杂度;最后,使用倒置残差模块,通过倒置瓶颈设计和残差连接缓解梯度消失,有效地增加模型的深度,同时降低计算复杂度。此外,该文构建了变电站点云数据集,对DI-PointNet算法进行详细的消融实验,并与主流深度学习算法和电力领域典型点云分割算法进行对比。实验验证结果表明,DI-PointNet算法对变电站主设备点云分割的平均交并比达到82.5%,相比PointNet++算法提高了2.1个百分点,且总体精度提高了3.4个百分点,达到90.1%。DI-PointNet算法为智能电力设备巡检和维护提供了有效的解决方案。 展开更多
关键词 点云语义分割 双层连续变换器 分层键采样 倒置残差 变电站
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基于SwinPoinTr的视角受限下杏鲍菇表型参数测量方法
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作者 谢立敏 黄轶 +2 位作者 吴昊宇 叶大鹏 方兵 《农业机械学报》 北大核心 2025年第3期148-157,共10页
针对菇房内杏鲍菇表型参数测量任务中,由于扫描设备视角受限,扫描的杏鲍菇点云出现残缺问题,基于AdaPoinTr(Adaptive geometry-aware point transformers)提出了改进的SwinPoinTr模型,实现了对残缺杏鲍菇点云的准确补全和杏鲍菇表型参... 针对菇房内杏鲍菇表型参数测量任务中,由于扫描设备视角受限,扫描的杏鲍菇点云出现残缺问题,基于AdaPoinTr(Adaptive geometry-aware point transformers)提出了改进的SwinPoinTr模型,实现了对残缺杏鲍菇点云的准确补全和杏鲍菇表型参数的测量。该方法在使用提出的特征重塑模块的基础上,构建具有几何感知能力的层次化Transformer编码模块,提高了模型对输入点云的利用率和模型捕捉点云细节特征的能力。然后基于泊松重建方法完成了补全点云表面重建,并测量到杏鲍菇表型参数。实验结果表明,本文所提算法在残缺杏鲍菇点云补全任务中,模型倒角距离为1.316×10^(-4),地球移动距离为21.3282,F1分数为87.87%。在表型参数估测任务中,模型对杏鲍菇菌高、体积、表面积估测结果的决定系数分别为0.9582、0.9596、0.9605,均方根误差分别为4.4213 mm、10.8185 cm^(3)、7.5778 cm^(2)。结果证实了该研究方法可以有效地补全残缺的杏鲍菇点云,可以为菇房内杏鲍菇表型参数测量提供基础。 展开更多
关键词 杏鲍菇 智慧菇房 表型参数 点云补全 泊松重建 Swinpointr
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基于改进PointNet++的城市道路点云分类方法
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作者 田晟 熊辰崟 龙安洋 《广西师范大学学报(自然科学版)》 北大核心 2025年第4期1-14,共14页
城市道路场景的点云数据量巨大、类别分布不平衡且密度极不均匀,导致现有的点云分类方法难以满足高精度分类的需求。为了解决现有PointNet++网络对局部特征提取不充分的问题,本文充分考虑场景的上下文信息和点之间的全局依赖性,构建融... 城市道路场景的点云数据量巨大、类别分布不平衡且密度极不均匀,导致现有的点云分类方法难以满足高精度分类的需求。为了解决现有PointNet++网络对局部特征提取不充分的问题,本文充分考虑场景的上下文信息和点之间的全局依赖性,构建融合上下文信息的PointNet++点云分类网络模型。首先,基于注意力机制设计局部特征聚合模块,通过动态地融合邻域点特征以充分捕获局部信息。其次,考虑现有的分类模型不能顾及上下文信息,导致复杂场景下的分类性能受限,本文构建上下文感知模块和双注意力模块,从多个维度提取上下文信息,进一步增强特征的表达能力。实验结果表明:改进模型在大型点云数据集下具有更高的分类精度及更强的泛化性能(总体分类精度在Oakland和Paris公开数据集上分别为98.70%和96.84%),更适用于大规模点云分类。 展开更多
关键词 点云分类 pointNet++ 局部特征 注意力机制 上下文信息 城市道路
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Point-GBLS:结合深宽度学习的三维点云分类网络
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作者 张国有 左嘉欣 +3 位作者 潘理虎 郝志祥 郭伟 张雪楠 《计算机系统应用》 2025年第3期1-13,共13页
基于点云的三维物体识别和检测是计算机视觉和自主导航领域的一个重要研究课题.如今,深度学习算法大大提高了三维点云分类的准确性和鲁棒性.然而,深度学习网络通常存在网络结构复杂、训练过程耗时等问题.本文提出了一种三维点云分类网络... 基于点云的三维物体识别和检测是计算机视觉和自主导航领域的一个重要研究课题.如今,深度学习算法大大提高了三维点云分类的准确性和鲁棒性.然而,深度学习网络通常存在网络结构复杂、训练过程耗时等问题.本文提出了一种三维点云分类网络Point-GBLS,它将深度学习和宽度学习系统结合在一起.网络结构简单,训练时间短.首先通过基于深度学习的特征提取网络提取点云特征,然后用改进的宽度学习系统对其进行分类.ModelNet40和ScanObjectNN数据集上的实验表明,Point-GBLS识别准确率分别达到92%以上和78%以上,训练时间低于同类深度学习方法的50%以上,优于具有相同骨干的深度学习网络. 展开更多
关键词 三维模型分类 点云 深度学习 宽度学习系统
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基于Point Transformer方法的鱼类三维点云模型分类
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作者 胡少秋 段瑞 +3 位作者 张东旭 鲍江辉 吕华飞 段明 《水生生物学报》 北大核心 2025年第2期146-155,共10页
为实现对不同鱼类的精准分类,研究共采集110尾真实鱼类的三维模型,对获取的3D模型进行基于预处理、旋转增强和下采样等操作后,获取了1650尾实验样本。然后基于Point Transformer网络和2个三维分类的对比网络进行数据集的分类训练和验证... 为实现对不同鱼类的精准分类,研究共采集110尾真实鱼类的三维模型,对获取的3D模型进行基于预处理、旋转增强和下采样等操作后,获取了1650尾实验样本。然后基于Point Transformer网络和2个三维分类的对比网络进行数据集的分类训练和验证。结果表明,利用本实验的目标方法Point Transformer获得了比2个对比网络更好的分类结果,整体的分类准确率能够达到91.9%。同时对所使用的三维分类网络进行有效性评估,3个模型对于5种真实鱼类模型的分类是有意义的,其中Point Transformer的模型ROC曲线准确率最高,AUC面积最大,对于三维鱼类数据集的分类最为有效。研究提供了一种可以实现对鱼类三维模型进行精准分类的方法,为以后的智能化渔业资源监测提供一种新的技术手段。 展开更多
关键词 点云处理 point Transformer 三维模型 鱼类分类
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基于Point-Attention点云分类的激光雷达故障诊断方法研究
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作者 谭光兴 程星 陈海峰 《现代电子技术》 北大核心 2025年第20期10-17,共8页
在智能车辆和自主机器人领域,激光雷达传感器因高精度和可靠性,被广泛应用于环境感知和物体检测,因此其故障诊断尤为重要。激光雷达内部的故障往往有固件提醒,而外部环境因素导致的故障检测挑战较大,比如车辆形变、污垢等导致的激光点... 在智能车辆和自主机器人领域,激光雷达传感器因高精度和可靠性,被广泛应用于环境感知和物体检测,因此其故障诊断尤为重要。激光雷达内部的故障往往有固件提醒,而外部环境因素导致的故障检测挑战较大,比如车辆形变、污垢等导致的激光点云遮挡故障,难以直接在固件层面体现,需通过外部检测进行诊断。为此,提出一种基于Point-Attention激光雷达遮挡故障诊断方法。首先,结合多头几何注意力机制模块与CBAM模块、残差连接机制,增强了模型对点云数据中关键特征的提取能力,提高了分类准确性和鲁棒性;在真实的ScanObjectNN数据集和ModelNet40基准数据集上对Point-Attention模型进行了实验。该模型在分类任务上准确率分别达到了93.7%、82.5%。其次,融合了一种时间特征捕捉机制,从而使模型能够更好地适应现实场景中的时间相关性,进而更准确地处理激光雷达的遮挡故障。实验结果表明,所提方法能有效诊断激光雷达遮挡故障,最佳总体精度达99%以上,为激光雷达故障诊断提供了一种高效准确的解决方案。 展开更多
关键词 激光雷达 故障诊断 点云分类 残差连接 遮挡检测 时间特征捕捉
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利用PEG实验确定女性巨泌乳素cut-off值及比较分析
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作者 宋胜男 陈陆 +3 位作者 刘雨珩 陈怡菲 翟燕红 曹正 《标记免疫分析与临床》 2025年第6期1233-1236,1289,共5页
目的利用聚乙二醇(PEG)沉淀实验,确定本实验室所应用的中国亚辉龙公司的iFlash-3000型化学发光免疫分析仪及相关配套试剂检测巨泌乳素的cut-off值。方法在2024年8月至2024年9月检测的泌乳素1619例标本中,收集泌乳素升高标本206例,进行PE... 目的利用聚乙二醇(PEG)沉淀实验,确定本实验室所应用的中国亚辉龙公司的iFlash-3000型化学发光免疫分析仪及相关配套试剂检测巨泌乳素的cut-off值。方法在2024年8月至2024年9月检测的泌乳素1619例标本中,收集泌乳素升高标本206例,进行PEG确认实验后进行分析,利用ROC曲线计算出cut-off值。结果本实验室巨泌乳素阳性率为12.73%。根据数据分析,PEG结果可分为3组,其中149例(72.33%)为单体泌乳素组,22例(10.68%)为混合泌乳素组,35例(16.99%)为巨泌乳素组。非单泌乳素组与单泌乳素组Youden指数下,当cut-off值为1086.95mIU/L时,灵敏度为77.1%,特异性为64.9%;非巨泌乳素组与巨泌乳素组Youden指数下,当cut-off值为1154.59mIU/L时,灵敏度为68.4%,特异性为70.5%。结论iFlash-3000型化学发光免疫分析仪及配套试剂检测泌乳素与PEG实验结果呈正相关;利用实验室cut-off值与临床信息相互认知才是判断巨泌乳素血症的有效方式。 展开更多
关键词 泌乳素检测 iFlash-3000 PEG实验 cut-off
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Optimizing electronic structure through point defect engineering for enhanced electrocatalytic energy conversion
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作者 Wei Ma Jiahao Yao +6 位作者 Fang Xie Xinqi Wang Hao Wan Xiangjian Shen Lili Zhang Menggai Jiao Zhen Zhou 《Green Energy & Environment》 SCIE EI CAS 2025年第1期109-131,共23页
Point defect engineering endows catalysts with novel physical and chemical properties,elevating their electrocatalytic efficiency.The introduction of defects emerges as a promising strategy,effectively modifying the e... Point defect engineering endows catalysts with novel physical and chemical properties,elevating their electrocatalytic efficiency.The introduction of defects emerges as a promising strategy,effectively modifying the electronic structure of active sites.This optimization influences the adsorption energy of intermediates,thereby mitigating reaction energy barriers,altering paths,enhancing selectivity,and ultimately improving the catalytic efficiency of electrocatalysts.To elucidate the impact of defects on the electrocatalytic process,we comprehensively outline the roles of various point defects,their synthetic methodologies,and characterization techniques.Importantly,we consolidate insights into the relationship between point defects and catalytic activity for hydrogen/oxygen evolution and CO_(2)/O_(2)/N_(2) reduction reactions by integrating mechanisms from diverse reactions.This underscores the pivotal role of point defects in enhancing catalytic performance.At last,the principal challenges and prospects associated with point defects in current electrocatalysts are proposed,emphasizing their role in advancing the efficiency of electrochemical energy storage and conversion materials. 展开更多
关键词 point defect engineering DOPING VACANCY ELECTROCATALYSIS Electronic structure
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Nomenclature and location of acupuncture points for laboratory animals Part 2 被引量:1
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作者 《World Journal of Acupuncture-Moxibustion》 2025年第2期163-165,共3页
This paper introduces part of the content in the association standard,T/CAAM0002–2020 Nomenclature and Location of Acupuncture Points for Laboratory Animals Part 2:Rat.This standard was released by the China Associat... This paper introduces part of the content in the association standard,T/CAAM0002–2020 Nomenclature and Location of Acupuncture Points for Laboratory Animals Part 2:Rat.This standard was released by the China Association of Acupuncture and Moxibustion on May 15,2020,implemented on October 31,2020,and published by Standards Press of China.The standard was drafted by the Institute of Acupuncture and Moxibustion,China Academy of Chinese Medical Sciences,and the Nanjing University of Chinese Medicine.Principal draftsmen:Xiang-hong JING and Xing-bang HUA.Participating draftsmen:Wan-Zhu BAI,Bin XU,Dong-sheng XU,Yi GUO,Tie-ming MA,Xin-jun WANG,and Sheng-feng LU. 展开更多
关键词 acupuncture points STANDARD NOMENCLATURE rat association standardt caam LOCATION acupuncture moxibustion
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Coincidence Point and Common Fixed Point Theorems on b-Metric-like Spaces
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作者 LUO Ting 《应用数学》 北大核心 2025年第3期831-840,共10页
In this paper,we establish common fixed point theorems for expansive map?pings on b-metric-like space and coincidence point for f-weakly isotone increasing mappings in partially ordered b-metric-like space.The main re... In this paper,we establish common fixed point theorems for expansive map?pings on b-metric-like space and coincidence point for f-weakly isotone increasing mappings in partially ordered b-metric-like space.The main results generalize and extend several well-known comparable results from the existing literature.Moreover,some examples are provided to illustrate the main results. 展开更多
关键词 b-metric-like space Partially ordered b-metric-like space Expansive mapping f-weakly isotone mapping Coincidence point Common fixed point
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The(Homotopy)Fixed Point Set of S^(1)-Actions on Rationally Elliptic 4-Manifolds
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作者 Chen Huimin Liu Xiugui 《南开大学学报(自然科学版)》 北大核心 2025年第3期32-37,共6页
Let X be a closed simply connected rationally elliptic 4-manifold.The rational homotopy type of homotopy fixed point sets X^(hS^(1))is determined,and based on some relations between X^(hS^(1))and X^(S^(1)),the rationa... Let X be a closed simply connected rationally elliptic 4-manifold.The rational homotopy type of homotopy fixed point sets X^(hS^(1))is determined,and based on some relations between X^(hS^(1))and X^(S^(1)),the rational homotopy type of the fixed point set X^(S^(1))is determined. 展开更多
关键词 rationally elliptic 4-manifolds rational homotopy type homotopy fixed point set fixed point set
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基于改进PointNet++的船舶管路重建方法
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作者 冯彦淏 邓志杰 +2 位作者 刘维 沈彬 王皓 《机械设计与研究》 北大核心 2025年第5期86-92,共7页
船舶的管路系统是船舶可靠运行的保障,具有零部件种类多和结构复杂的特点。针对船舶管路系统在维护与替换过程中重建效率低和精度差的问题,对经典的点云深度学习网络PointNet++进行了改进,提出了一种船舶管路的重建方法。通过构建管路... 船舶的管路系统是船舶可靠运行的保障,具有零部件种类多和结构复杂的特点。针对船舶管路系统在维护与替换过程中重建效率低和精度差的问题,对经典的点云深度学习网络PointNet++进行了改进,提出了一种船舶管路的重建方法。通过构建管路部件分割数据集,生成了高质量训练样本;对PointNet++模型采取多尺度采样半径调整和损失均衡化的改进策略,使其能够准确和均衡地捕捉各类部件的局部特征;根据分割结果求解出零部件特征参数和零部件之间的连接关系,实现了拓扑结构的恢复和管路的重建。实验结果显示,改进后的PointNet++模型在管路部件分割精度上取得了提升,对少数类部件的识别和分割更为精准;在管路重建方面实现了较高的精度,同时也保证了安装精度和可替换性,验证了所提方法可以满足实际船舶维修中高精度、自动化重建管路的需求,有效提升了管路替换的生产效率和可靠性。 展开更多
关键词 管路重建 虚拟数据集 点云分割 pointNet++
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Hydro-microstructural behaviors of zeolite/active carbon amended soil-bentonite cut-off wall
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作者 Yong He Shiyu Li +3 位作者 Zhao Zhang Kaofei Zhu He Wei Keneng Zhang 《Journal of Rock Mechanics and Geotechnical Engineering》 2025年第4期2590-2602,共13页
The soil-bentonite(SB)cut-off wall has been widely considered a vertical barrier to effectively control the migration of pollutants in contaminated sites.Recently,active porous materials have been used as a promising ... The soil-bentonite(SB)cut-off wall has been widely considered a vertical barrier to effectively control the migration of pollutants in contaminated sites.Recently,active porous materials have been used as a promising candidate amendment for mitigating chemical degradation and improving the retardation capacity of the SB cut-off wall.In this study,the silty clay from a typical Cr(VI)contaminated site was selected as the body material of the SB cut-off wall,and zeolite and active carbon were used as the modifiers of the silty clay-bentonite backfills,respectively.The impact of the two modifiers on the engineering properties of the backfills was investigated through a series of slump tests,consolidation tests,hydraulic conductivity tests,and microstructure tests.The experimental results demonstrated that the slump curves closely exhibited a linear relationship between standard slump and moisture content.Meanwhile,bentonite could improve the optimum moisture content of the backfills,while the addition of the two modifiers yielded the opposite outcome.As the bentonite content increased,the compression index of the backfills significantly increased,while the hydraulic conductivity decreased.At a given bentonite content of 5%,the addition of zeolite or active carbon resulted in a reduction in the compression index and initial void ratio,while exhibiting minimal impact on the hydraulic conductivity.Scanning electron microscope(SEM)observations indicated that the silty clay-bentonite backfills became increasingly loose with increasing bentonite content,owing to the filling and expansion of dispersed bentonite layers.The amendment of zeolite or active carbon was able to decrease the backfill volume by promoting the agglomeration of layered bentonite.The findings of this study will be useful for the optimal selection of backfill materials and the performance evaluation of the cut-off wall. 展开更多
关键词 Soil-bentonite(SB)backfill cut-off wall SLUMP Compressibility Hydraulic conductivity
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Reasonable control of cut-off voltage to achieve stable lithium metal anode
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作者 Chengcai Liu Yuanxing Zhang +4 位作者 Yawen Liu Ling Zhang Xuefeng Wang Daobin Mu Borong Wu 《Journal of Energy Chemistry》 2025年第7期961-971,共11页
Uneven lithium deposition leading to lithium dendrite growth severely hampers the application of lithium-metal batteries.Modifying the collector with lithiophilic materials helps improve lithium deposition.For lithoph... Uneven lithium deposition leading to lithium dendrite growth severely hampers the application of lithium-metal batteries.Modifying the collector with lithiophilic materials helps improve lithium deposition.For lithophilic materials to modify the collector,the choice of cut-off voltage is very important.While excessively high cut-off voltages may compromise the stability of the modified layer and consequently disrupt ordered lithium deposition,conventional approaches typically employ lower cut-off voltages(particularly 0.1 V)to maintain modification layer stability.However,the 0.1 V cut-off voltage results in incomplete lithium stripping from the lithiophilic material surface.This phenomenon significantly diminishes the lithiophilic properties of the modified layer and consequently leads to substantial nucleation overpotential.Here,we propose to use a moderate cut-voltage stimulation effect to slow down the interfacial shielding effect of residual lithium metal on lithiophilic materials.By optimizing the cut-off voltage for the Cu@Sb_(2)S_(3)collector,the stability of the modified layer can be preserved while enabling the complete stripping of lithium metal from the surface of the lithophilic material.The asymmetric cell received the highest Coulombic efficiency(CE)when the lithium stripping cut-off voltage was set at 0.5 V relative to 0.1 and 2.0 V.At a current density of 1 mA cm^(-2)and a deposition capacity of1 m A h cm^(-2),the CE remained 98.6% at a cut-off voltage of 0.5 V after 140 cycles in an ether electrolyte without lithium nitrate. 展开更多
关键词 Antimony trisulfide Current collector cut-off voltage Lithium metal batteries
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Therapeutic Effects of 35 kDa Hyaluronan Injection at Trigger Points in the Treatment of Myofascial Pain Syndrome
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作者 Enkhbat Purevsuren Dylan Treger +5 位作者 Zhaohui Ma Xiaoxiao Jia Taivanbat Ganbaatar Munkh-Amgalan Gantumur Mizhou Hui Davaajargal Nkhtuvshin 《International Journal of Clinical Medicine》 2025年第1期1-15,共15页
Objectives: This study aimed to evaluate the prolonged therapeutic effects of a 35 kDa molecular weight hyaluronan fragment (HA35) in alleviating pain associated with myofascial pain syndrome (MPS). Hyaluronan interac... Objectives: This study aimed to evaluate the prolonged therapeutic effects of a 35 kDa molecular weight hyaluronan fragment (HA35) in alleviating pain associated with myofascial pain syndrome (MPS). Hyaluronan interacts with various receptors in the human body, including CD44, LYVE-1, RHAMM, and TLR2, and is well-known for its analgesic effects when used in intra-articular or ultrasound-guided nerve trunk injections. Studies have shown that hyaluronidase cleaves high molecular weight HA to generate HA35, a low molecular weight fragment with enhanced tissue permeability, capable of binding to HA receptors on cell surfaces to produce broad-spectrum analgesic effects. Methods: Ten patients diagnosed with MPS were treated and assessed in this study. HA35 was administered through injection at a dosage of 100 mg daily for 15 days. Patients evaluated their MPS, overall pain levels, and treatment satisfaction using the Numerical Pain Rating Scale (NPRS), the Global Pain Scale (GPS), and the Treatment Satisfaction Questionnaire for Medication (TSQM 1.4). Follow-up evaluations were performed three months post-treatment to assess the duration of therapeutic effects. Results: Significant improvements were observed in NPRS, GPS, and TSQM scores both during and after the treatment period (P Conclusions: HA35 provides effective and sustained relief from pain associated with MPS, demonstrating a prolonged therapeutic benefit. 展开更多
关键词 35 kDa Hyaluronan Fragment HA35 PAIN Myofascial Pain Syndrome Myofascial Trigger points
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Research on the Development of the Grade Point Average System in Higher Education-Re-understand the Connotation and Function of GPA
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作者 Wenxiu Zhang 《Journal of Contemporary Educational Research》 2025年第9期225-231,共7页
With the continuous advancement of the internationalization of higher education in China,the Grade Point Average(GPA)has become a primary indicator for evaluating academic performance in universities,playing a positiv... With the continuous advancement of the internationalization of higher education in China,the Grade Point Average(GPA)has become a primary indicator for evaluating academic performance in universities,playing a positive role in educational management.However,as it is closely tied to students’immediate interests,such as awards,exemptions from entrance exams for postgraduate recommendations,and domestic or international further education,certain new issues have emerged in its practical application.These problems have hindered the effective functioning of the GPA system,attracting widespread attention.This paper examines the origin,connotation,and theoretical assumptions of the GPA system,discusses its positive functions and existing challenges,and proposes recommendations for further improving academic evaluation. 展开更多
关键词 point system Grade point average(GPA) Academic evaluation Educational management
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Nomenclature and location of acupuncture points for laboratory animals Part 3:Mouse
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作者 《World Journal of Acupuncture-Moxibustion》 2025年第2期160-162,共3页
This paper introduces part of the content in the association standard,T/CAAM0002–2020 Nomenclature and Location of Acupuncture Points for Laboratory Animals Part 3:Mouse.This standard was released by the China Associ... This paper introduces part of the content in the association standard,T/CAAM0002–2020 Nomenclature and Location of Acupuncture Points for Laboratory Animals Part 3:Mouse.This standard was released by the China Association of Acupuncture and Moxibustion on May 15,2020,implemented on October 31,2020,and published by Standards Press of China.The standard was drafted by the Institute of Acupuncture and Moxibustion,China Academy of Chinese Medical Sciences,and the Nanjing University of Chinese Medicine.Principal draftsmen:Xiang-hong JING and Xing-bang HUA.Participating draftsmen:Wan-zhu BAI,Bin XU,Dong-sheng XU,Yi GUO,Tie-ming MA,Xin-jun WANG,and Sheng-feng LU. 展开更多
关键词 acupuncture points STANDARD MOUSE NOMENCLATURE location acupuncture points association standardt caam LOCATION acupuncture moxibustion
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