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关键词： Manganese   Circular economy   Cathode active material   CAM   LIB recycling  

摘要： Manganese control is a crucial step in lithium-ion battery (LIB) recycling processes. Older cathode active materials (CAM) have manganese concentrations excessively high for modern high‑nickel cathode active materials. This study explores the use of the cathode active materials' oxidative properties for manganese removal during the leaching process utilizing synthetic solutions. Furthermore, delithiated cathode material was utilized to facilitate manganese removal from the NCM622 leachate. Preliminary experiments involved leaching various cathode materials in sulfuric acid without the addition of common reducing agent, such as H₂O₂. Results indicated that 35–50 wt-% of the transition metals could be leached from the cathode material in the absence of a reducing agent. Additionally, after approximately 90 wt-% of the lithium had been removed, manganese was effectively employed as a reducing agent for nickel and cobalt. A carefully controlled initial concentration of manganese sulfate achieved >99% leaching yield of Ni and Co, while precipitating MnO₂ with nickel and cobalt impurities below 1 wt-%. Moreover, Ni-rich cathode materials were successfully utilized to control Mn in the NMC622 recycling solution. Manganese removal efficiency was also studied using delithiated cathode materials at different lithium yields. Manganese removal yield was lower, if over 80% delithiation yield was obtained in separate delithiation reaction.

关键词： 康复机器人   凸轮连杆机构   结构设计   有限元分析   运动学仿真  

摘要： 为满足下肢康复患者在家庭等狭小环境中的步态康复训练需求,设计并开发了一种基于凸轮连杆机构的下肢康复机器人系统。首先提出了下肢康复机器人的结构设计方案,对其腿部运动辅助机构和移动平台进行了设计;随后对机器人模型进行简化,对其进行有限元分析,验证运行过程中的刚度性能。最后基于ADAMS对腿部运动辅助机构开展运动学仿真分析研究并验证机构设计的合理性。结果表明,下肢康复机器人可以很好地模拟正常人体下肢步行运动。

关键词： 防切割手套   纱线细度   织物组织   包覆纱   UHMWPE纤维   力学性能  

摘要： 设计了3种包覆纱线(100 D/200 D/400 D UHMWPE)与3种针织组织(纬平针、添纱、平针衬垫),探究纱线细度与织物结构对防切割手套性能的影响机制。试验结果表明:包覆纱线断裂强力与UHMWPE细度呈正相关,400 D纱线较100 D纱线强力提升了273%;添纱组织因面-地双纱协同作用表现出最优防切割性能,最高达到ANSI/ISEA A9级,其特征切割力较单层结构提升46%。微观机理分析显示,多层组织结构通过增加纱线覆盖密度和限制纱线滑移可实现能量耗散优化。研究证实,“高模量面纱+高强地纱”组合能有效平衡防护性能与穿戴舒适性,为功能性防护手套开发提供理论依据。

关键词： finite element modeling   mechanical properties   manufacturing-related bulk material inhomogenities   micro-computed tomography   polymer lattice materials   pore shapes   stereolithography  

摘要： Mechanical properties of porous lattice materials can be tuned by the structure. Thus, the effect of the unit cell design on the mechanical properties is of special interest. However, studies often lack an in-depth investigation of the underlying mechanisms. Additionally, inhomogeneous bulk material properties and structural deviations introduced during manufacturing are often neglected. Here, the impact of the pore shape on Young's modulus, initial peak stress, and energy absorbance of lattice materials is investigated. Structural deviations of 3D-printed lattice materials from the computer-aided design (CAD) are examined, and analyze how they affect the mechanical properties. For comparability, the porosity, overall dimensions, and unit cell size of the lattice material are kept constant. Flexible lattice materials assembled of 3 x 3 x 3 unit cells are 3D-printed (stereolithography). Mechanical properties are determined through uniaxial compression tests and finite element modeling (FEM). Deviations between CAD and 3D-printed lattice materials are analyzed using micro-computed tomography (mu -CT). Combining mu -CT with FEM revealed the impact of these deviations on the mechanical properties. It is found that the mechanical properties depend indeed on the pore shape. Furthermore, a pyramidal shape along the printing direction and displaced or deformed pores are observed in the 3D-printed lattice materials, all of which result in reduced mechanical properties.

关键词： 纺织品   气质联用法   4,4'-二氯二苯砜   O,O,O-三苯基硫代磷酸酯   磷酸三苯酯  

摘要： 建立了超声提取结合气相色谱-质谱联用法测定纺织品中4,4'-二氯二苯砜、O,O,O-三苯基硫代磷酸酯及磷酸三苯酯。对前处理及分离检测条件进行了系统优化,确定甲苯为最佳萃取溶剂,萃取温度为45℃,萃取时间为30 min。在优化条件下,三种目标化合物在0.10~1.00 mg/L范围内线性关系良好,定量限均为1.0 mg/kg,检出限分别为0.14 mg/kg(4,4'-二氯二苯砜)、0.14 mg/kg(磷酸三苯酯)和0.12 mg/kg(O,O,O-三苯基硫代磷酸酯)。以棉、黏胶、锦纶和涤纶四种常见纺织品贴衬布为基质进行加标回收试验,三个加标水平下的平均回收率为70.7%~111.0%,相对标准偏差(RSD)为2.3%~8.4%。

关键词： Acute myocardial infarction(AMI)   Coronary artery disease(CAD)   Machine learning algorithms   Mitochondrial energy metabolism   Molecular docking   Therapeutic agents  

摘要： Coronary artery disease (CAD) is a leading cause of acute myocardial infarction (AMI), a condition characterized by the sudden blockage of blood flow to the heart muscle, resulting in significant morbidity and mortality worldwide. Despite advances in treatment, early prediction and diagnosis remain challenging. This study aims to construct a predictive model for CAD in AMI patients by focusing on mitochondrial energy metabolism(MME), a critical factor in cardiac function and disease progression. We employed an integrative WGCNA and machine learning algorithm combinations (RF, Lasso and SVM), utilizing 5 distinct CAD and AMI peripheral blood bulk profiles for the elucidation of potential diagnostic biomarkers for CAD patients with AMI. Finally, we discovered that CLPX can be recognized as diagnostic biomarkers, which is related to the molecular and immune pathogenesis of AMI among CAD patients. Meanwhile, we also discovered that MME-related genes can divide CAD and AMI into 2 different molecular subgroups via consensus clustering. Besides, Troglitazone can be regarded as potential therapeutic agents for AMI of CAD patients targeting CLPX via molecular docking. This study underscores the importance of mitochondrial function in cardiovascular diseases and highlights the potential of bioinformatics in advancing precision medicine.

关键词： 贾卡组织   经编织物   网球服   透气性   透湿性   拉伸弹性回复率   表面孔隙率  

摘要： 根据网球运动特征对网球服进行贾卡分区设计,通过试验方法设计包含不同薄厚、网孔数量和网眼大小等贾卡组织参数的成圈和衬纬两种类型共20种组织,并在RDPJ6/2型纱架贾卡经编机上进行织造。分析采用不同贾卡组织类型与网孔排列分布情况对透气性、透湿性和拉伸弹性回复率的影响,以开发穿着舒适的网球服。研究表明:在原料和牵拉密度不变的情况下,网孔组织占比越大、纵向长度越长的织物,表面孔隙率越高;贾卡织物表面孔隙率与透气性、透湿性呈正相关关系,且衬纬组织比相同组织排列的成圈组织具有更好的透气性和透湿性能;成圈组织弹性回复率普遍优于相同组织排列的衬纬组织,且厚组织最多的成圈组织弹性回复率更优。

关键词： AUC   Area Under the Curve   CAD   Coronary Artery Disease   CAD-RADS   Coronary Artery Disease Reporting and Data System   CCTA   Coronary Computed Tomography Angiography   CHD   Coronary Heart Disease   CI   Confidence Interval   CP   Calcified Plaque   HU   Hounsfield Units   ICA   Invasive Coronary Angiography   IQR   Interquartile Range   LAD   Left Anterior Descending Artery   LCX   Left Circumflex Artery   NCP   Noncalcified Plaque   OR   Odds Ratio   PCAT   Pericoronary Adipose Tissue   PCATMA   Pericoronary Adipose Tissue Mean Attenuation   RCA   Right Coronary Artery   ROC   Receiver Operating Characteristic   SCCT   Society of Cardiovascular Computed Tomography   Pericoronary adipose tissue mean attenuation   Noncalcified plaque   Coronary artery disease   Degree of stenosis   Vascular inflammation  

摘要： Pericoronary adipose tissue (PCAT) attenuation, a noninvasive imaging biomarker derived from coronary computed tomography angiography, reflects local vascular inflammation. This study aimed to investigate the associations between vessel-specific PCAT mean attenuation (PCATMA) and volume with the severity of coronary artery stenosis and plaque characteristics.

关键词： 品牌建设   文化影响力   纺织品   溢价能力   高端市场  

摘要： 我国是全球最大的纺织品服装生产国、消费国和出口国.然而,当前行业品牌建设仍存在结构性短板:制造品牌在全球价值链中的定位和溢价能力有待提升;消费品牌在高端市场竞争力与国际时尚话语权上仍存在短板,文化影响力、设计引领力和品牌溢价仍显不足.为此,提出四点建议.

关键词： 微创超薄   计算机辅助设计与制造(CAD/CAM)   全瓷贴面   前牙间隙   菌群微环境   美学效果  

摘要： 目的:观察微创超薄与计算机辅助设计与制造(Computer Aided Design/Computer Aided Manufacturing,CAD/CAM)全瓷贴面修复前牙间隙的美学效果及对口腔菌群微环境的影响。方法:选取笔者医院2023年2月-2025年2月收治的94例(共135颗患牙)前牙间隙患者为研究对象,采用随机数字表法分为两组。微创组47例(67颗患牙),采用微创超薄贴面修复;研究组47例(68颗患牙),采用CAD/CAM全瓷贴面修复。比较两组患者炎症反应、口腔菌群微环境、牙体美观度、修复效果及并发症发生率。结果:治疗后1个月,研究组肿瘤坏死因子-α(TNF-α)、白细胞介素-6(IL-6)、白细胞介素-1β(IL-1β)水平低于微创组(P<0.05);研究组牙卟啉单胞菌、具核梭杆菌、伴放线放线杆菌数量均低于微创组(P<0.05)。治疗后6个月,研究组红色美学指数评分(Pink Esthetic Score,PES)、改良版美国公共卫生服务(United States Public Health Service,USPHS)评分均高于微创组(P<0.05)。研究组并发症发生率低于微创组(P<0.05)。结论:CAD/CAM全瓷贴面修复前牙间隙修复效果和安全性良好,不仅对患者口腔菌群微环境影响较小,有利于减轻修复后炎症反应,还能明显提升牙体美观度。