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关键词： 梳妆楼元墓   纺织品   服饰制度  

摘要： 河北沽源梳妆楼M1号墓出土了12件(套)纺织品,包括辫线袍、织金锦、拼贴刺绣、袋囊、鞋袜等,类型多样、工艺精湛,体现了元代贵族服饰制度特征与中西工艺的融合。这些纺织品在纤维材质、织物结构、纹饰题材及染整工艺等方面,均保留了关键信息,为研究蒙元时期的服饰制度、丝织技术与文化交流提供了重要实物依据。该综述旨在系统梳理梳妆楼M1墓葬出土纺织品的整体面貌与学术价值,并为后续专题研究奠定基础。

关键词： arduino-based spectrophotometry   smart optical materials   electrochromic polymers   spectral reconstruction   portable low-cost structure   real-time optical monitoring  

摘要： Real-time optical monitoring of large area dynamic color systems remains a technical challenge, particularly when aiming for low-cost, portable, and scalable solutions. In this study, we present a spectrophotometric platform based on an Arduino-compatible ESP32-CAM, a modular 3D-printed prototype, and a custom Python interface capable of reconstructing visible-range transmittance spectra (400-700 nm) from RGB images based on a neural network protocol. The system enables real-time visualization of both full spectral evolution and single-wavelength transmittance during any process of color switching, offering valuable insight into optical kinetics without requiring expensive instrumentation. To validate its performance, thin films of five electrochromic polymers covering visible gamut color transitions (orange, magenta, cyan, green, and black) were analyzed under color-changing dynamic conditions. The transmittance evolution and reconstructed spectra obtained using the Arduino system were compared against those acquired from a reference spectrophotometer and a previously validated digital camera-based method. Results showed excellent agreement across most polymers, with deviations in transmittance values remaining below 4% even in the most challenging cases. The developed interface allows users to select specific areas of interest and control time resolution, while all data can be exported for further analysis. Additionally, all captured images are stored for subsequent high-accuracy post-processing using color correction and spectral reconstruction models. This work introduces a robust, accessible tool for dynamic optical analysis that maintains competitive performance compared to conventional systems. Its versatility, portability, and real-time functionality make it particularly suited for the in situ optical evaluation of surfaces, smart materials and devices in both laboratory and field environments.

关键词： In-Sn-20Cu钎料   Cu颗粒   热循环   剪切性能  

摘要： 采用Cu颗粒复合钎料In-Sn-20Cu制备了Cu/In-Sn-20Cu/Cu焊点,研究了-20~120℃热循环对Cu/In-Sn-20Cu/Cu焊点显微组织和剪切性能的影响。分析了热循环过程中焊点界面反应区金属间化合物(Intermetallic compound,IMC)的生长、原位反应区IMC的演化以及剪切性能的变化,阐述了焊点断口的形貌特征。结果表明:随热循环周次的增加,焊点界面IMC厚度持续增长,界面反应区的主要成分为Cu_(3)(In,Sn)相。在200~400次热循环中,焊点原位反应区灰色岛屿状Cu_(3)(In,Sn)相数量增多,同时原位反应区出现孔洞。600次热循环后,Cu_(3)(In,Sn)相体积增大,孔洞增多。800次和1000次热循环后,出现Cu_(3)(In,Sn)相剥落和大规模孔洞。随着热循环周次的增加,Cu/In-Sn-20Cu/Cu焊点的剪切性能逐渐下降。未经热循环试验的焊点剪切强度为28.8 MPa,经400次热循环后下降了23.2%,至22.1 MPa。1000次热循环后,剪切强度最低,为12.4 MPa,相比初始值下降了56.9%。焊点断裂模式由韧性断裂转变为脆性断裂。

关键词： 3D CAD models   Annotation Tool   Deep Learning  

摘要： The recognition of features is important in computer-aided engineering (CAE) across different applications, such as computer aided process planning (CAPP) or computer aided manufacturing (CAM). While deep learning has become a widely used approach for the recognition of features, it necessitates large datasets that are still difficult to compile. To facilitate the annotation of 3D CAD models, a novel annotation tool is introduced. The CADLabel annotation tool offers direct and indirect manual labeling modules for 3D CAD models, but it also contains a recommendation system leveraging geometrical and topological analysis with a graph neural network (GNN) to propose potential features, streamlining the annotation workflow. Additional attributes include support for multiple STEP file formats, integration to add further information to the 3D CAD model such as Product and Manufacturing Information (PMI), and the ability to export annotations in different file formats suitable for deep learning.

摘要： 《产业用纺织品》创刊于1983年,由教育部主管,东华大学、全国产业用纺织品科技情报站主办,中国产业用纺织品行业协会协办,东华大学期刊中心编辑出版;是全国产业用纺织品领域具有权威性的期刊之一;为《中国学术期刊影响因子年报》统计源期刊,已入编中国学术期刊(网络版)、中国核心期刊(遴选)数据库、中文科技期刊数据库、长江文库数据库、超星期刊域出版平台等;多次入选北大版中文核心期刊。

关键词： 技术创新   高质量发展   纺织品   220亿元  

摘要： 在纺织行业整体承压调整的背景下,过滤与分离用纺织品产业逆势增长,2025年产值预计超220亿元,同比增长超5.5%,呈现“稳中有进、结构优化”的高质量发展态势。作为支撑工业减污降碳与绿色转型的关键配套产业,其技术创新与结构升级正为“双碳”目标与美丽中国建设注入持续动力。

摘要： Chorioallantoic membrane (CAM) functions as embryonic “lung” in birds/reptiles and forms through fusion of the chorion and allantois, two extraembryonic membranes conserved in amniotic vertebrates. Modified CAM gives rise to the placenta, performing similar roles in mammalian development. Despite its importance, cellular morphogenesis leading to CAM maturation is poorly understood. In particular, it is unclear how mesoderm-derived capillary cells are positioned within the chorionic ectoderm layer in mature CAM. In this work, using a combination of live imaging, histology, immunofluorescence and electron microscopy approaches, we carried out a systematic analysis of chicken CAM morphogenesis from embryonic day 4.5 (D4.5; soon after its initial formation) to D15 (when it reaches its fully mature architecture). We show that CAM chorionic ectoderm establishes physical contact with the acellular soft shell from D7.5. CAM mesoderm-derived capillary vessels shift from a sub-chorionic ectodermal position to an intra-chorionic ectodermal one from D11 onward. This is mediated by the downward movement of a subset of chorionic ectoderm cells (termed chorionic basal cells) from D9 through inter-capillary spaces, eventually enveloping all superficial capillaries basally and leading to a seemingly mesoderm-out/ectoderm-in topology. All CAM superficial capillary vessels are covered by a thin layer (<1 μm) of chorionic ectodermal cell (capillary covering cell) processes. Another type of superficial chorionic ectodermal cell (villous cavity cell) contains numerous apical villi. Detailed immunofluorescence and electron microscopy studies revealed that germ layer organization and epithelial cell polarity were maintained during CAM morphogenesis and maturation. Heterogeneity in CAM ectoderm, mesoderm and endoderm cells was observed. Cell proliferation was seen in all three germ layers during early maturation, but bec

关键词： 谐波减速器   三项余弦凸轮波发生器   柔性轴承   柔轮应力  

摘要： 【目的】波发生器作为原动件,其轮廓曲线直接关系着柔轮的变形受力规律。为降低柔轮受力,改善其疲劳性能,提出一种三项余弦凸轮波发生器的设计。【方法】三项余弦波发生器轮廓曲线由基圆半径(常数项)及3个余弦项叠加而成,通过波发生器长轴处曲率、波高及短轴缩进量对曲线参数进行约束控制;在轴承选型后,将长轴处曲率变化系数、短轴修正系数、柔性轴承游隙作为变量参数,分析其对柔轮变形和应力的影响,并对具体型号谐波减速器提出最优设计方案;对新型凸轮结构装入后的柔轮结构进行有限元分析,分别在撑胀、空载以及加载条件下与传统余弦凸轮进行对比,对柔轮受力情况及谐波传动的整体性能进行分析,对该设计方案的合理性进行了验证。【结果】有限元分析结果表明,与传统余弦波发生器相比,三项余弦波发生器作用下的柔轮应力在不同工况下都降低10%以上,有着更小的应力幅值及更平稳的应力变化趋势,具有更长的疲劳寿命及更好的精度保持性能。

关键词： CAD技术   设备维修   维修仿真   数字孪生   精准作业  

摘要： 旨在探讨计算机辅助设计(computer aided design,CAD)技术与机械维修工作全流程的深度融合。首先,剖析了CAD的技术内核及其赋能维修领域的学理依据;其次,逐一论述了其在维修规划阶段(包含构建数字档案、维修工序的仿真与方案决策)、维修作业阶段(涉及缺陷的可视化诊断、拆装过程的引导)以及维修评估阶段(主要为知识沉淀与设计反馈)的具体实施路径与价值创造;随后,审视了当前融合进程中存在的技术集成与人才储备等诸多挑战;最后,结合数字孪生、增强现实等前沿技术,展望了CAD技术在未来智慧维修生态中的演进趋势。研究论证表明,将CAD技术深度嵌入维修业务链,能够有效提升作业精度与效率,优化资源调配,保障工艺质量,从而驱动机械维修领域的数字化跃迁与智能化升级。

关键词： Thyroid hormones   Sensitivity to thyroid hormones   Heart rate   Euthyroid population   Bradycardia   BMI   body mass index   CAD   coronary artery disease   FT3/FT4 ratio   free triiodothyronine/free thyroxine   GHB (%)   glycated hemoglobin   PTFQI   parametric thyroid feedback quantile–based index   TFQI   thyroid feedback quantile–based index   TSH   thyrotropin   TSHI   thyrotropin index   TT4RI   thyrotropin thyroxine resistance index  

摘要： The association of thyroid hormone sensitivity with heart rate remains unclear.