Polydiacetylene (PDA) is one kind of the conjugated polymer with layered structure, which can serve as a host to accommodate the guest components through intercalation. In these intercalated PDAs, some of them were reported to have a nearly perfect organized structure and perform completely reversible thermochromism. Till now, these reported intercalated PDAs were made by only introducing a single component for intercalation. Here, we chose 10, 12-pentacosadiynoic acid (PCDA) as the monomer, of which the carboxyl-terminal groups can interact with either Tb

ions or melamines (MAs). When the feeding molar ratio of PCDA, MA, and Tb

ion was 3:267:1, only Tb

ions were intercalated though excess MAs existed. Such Tb

-intercalated poly-PCDA exhibited completely reversible thermochromism, where almost all the carboxyl groups interacted with Tb

ions to form the nearly perfect structure. When the feeding molar ratio of PCDA, MA, and Tb

ion was 3:267:0.6, both Tb

ions and MAs were intercalated. There existed some defects in the imperfect MA-intercalated domains and at the domain boundaries. The MA/Tb

-intercalated poly-PCDA exhibits partially reversible thermochromism, where the backbones near the defects are hard to return the initial conformation, while the rest, those at nearly perfect organized domains, are still able to restore the initial conformation.

高千伏X线胸片是我国GBZ 70—2015《职业性尘肺病的诊断》强制采用的尘肺病诊断、分期工具，常常需要联合应用计算机体层成像（CT）进行鉴别诊断，但胸部CT检查尘肺病缺乏规范性的技术指导。为此，中国卫生监督协会团体标准委员会批准了中国疾病预防控制中心职业卫生与中毒控制所关于《CT用于尘肺病辅助检查指南》的立项申请。在中华预防医学会职业病专业委员会尘肺病影像学组的指导下，项目组撰写了本共识。其中：鉴于尘肺病检查的特殊性，对CT机和附属设备的配置制定了具体要求；为了获得高质量图像，对扫描前的准备、图像层厚等扫描和图像重建参数组合制定了具体要求；基于CT是数字图像的基础，对图像后处理方法提出了具体要求；为了获得规范的大数据，对图像数据的存储也做了相应要求；为了方便使用，制定了CT图像质量评价方法。

建立了高功率激光辐照下光学表面存在划痕且残存抛光颗粒时的热损伤分析模型，对这种复杂缺陷条件下的光学材料热损伤性能进行了研究。利用有限差分法计算了不同尺度抛光颗粒处于划痕中不同位置时光学材料表面的光场调制和温度场的分布。根据表面温度分布，得到了对应条件下光学材料的热损伤阈值变化规律。结果表明：除了抛光颗粒半径对材料损伤阈值存在影响外，当抛光颗粒位于划痕宽度方向不同位置时，材料的热损伤阈值也会有比较明显的变化；当位于划痕中心时，抛光颗粒对材料光场调制最强，更容易造成材料的熔化损伤。

基于导热-隔热原理，通过在环氧树脂(Epon)中添加质量分数为5%，15%，25%的六方氮化硼(h-BN)作为填料制备环氧基散热层，质量分数为1%的膨胀蛭石(E-ver)作为填料制备环氧基隔热层，设计了宏观交替堆叠的环氧复合材料，并进行了热防护性能的研究。研究结果表明：具有各向异性结构的复合材料，顶部中心温度较传统材料的温度下降13～16 ℃，热延迟时间大大提升，并随着h-BN含量的增加，热性能得到明显改善。理论分析了该堆叠结构下复合材料“横向散热、纵向抑热”的机理。