摘要：The 1.55-μm quantum-dot (QD) micropillar cavities are strongly required as single photon sources (SPSs) for silica-fiber-based quantum information processing. Theoretical analysis shows that the adiabatic distributed Bragg reflector (DBR) structure may greatly improve the quality of a micropillar cavity. An InGaAsP/InP micropillar cavity is originally difficult, but it becomes more likely usable with inserted tapered (thickness decreased towards the center) distributed DBRs. Simulation turns out that, incorporating adiabatically tapered DBRs, a Si/SiO2- InP hybrid micropillar cavity, which enables weakly coupling InAs/InP quantum dots (QDs), can even well satisfy strong coupling at a smaller diameter. Certainly, not only the tapered structure, other adiabatic designs, e.g., both DBR layers getting thicker and one thicker one thinner, also improve the quality, reduce the diameter, and degrade the fabrication difficulty of Si/SiO2-InP hybrid micropillar cavities. Furthermore, the problem of the thin epitaxial semiconductor layer can also be greatly resolved by inserting adiabatic InGaAsP/InP DBRs. With tapered DBRs, the InGaAsP/InP-air-aperture micro-pillar cavity serves as an efficient, coherent, and monolithically producible 1.55-μm single-photon source (SPS). The adiabatic design is thus an effective way to obtain prospective candidates for 1.55-μm QD SPSs.

摘要：现有防弹树脂胶黏剂体系与国产芳纶的相容性不佳,制得的芳纶防弹无纬布表面不光滑、不平整,存在起泡现象,同时其防弹性能难以满足标准要求。对国产芳纶用防弹树脂胶黏剂配方进行了设计研究,采用80.0%聚氨酯D、10.0%树脂E、9.5%树脂F、0.5%白炭黑的防弹树脂胶黏剂配方制得的芳纶防弹无纬布表观性能优异,布面光滑、平整,常温及高温环境下均无起泡现象,同时防弹性能优异,穿透层数少,凹陷值小,满足GA 141—2010标准要求。

摘要：Based on the structure of natural product 2-aryl-4,5-dihydrothiazole-4-carboxylic acid, a series of novel （R）-2-aryl-4,5-dihydrothiazole-4-carboxylic acid derivatives were designed and synthesized. Their structures were characterized by ^1H NMR, ^13C NMR and HRMS. The single crystal structure of compound 9b was determined by X-ray diffraction analysis. The antifungal activities were evaluated for the first time. The bioassay results indicated that most compounds exhibited moderate to good antifungal activities. The antifungal activities of compound 13a （against Cercospora arachidicola Hori）, 13d （against Alternaria solani）, and 16e （against Cercospora arachidieola Hori） were 61.9%, 67.3% and 61.9%, respectively, which are higher than those of the commercial fungicides chlorothalonil and carbendazim. Moreover, compound 13d exhibited excellent antifungal activities against 7 kinds of the fungi tested （66.7%, 77.3%, 63.0%, 87.9%, 70.0%, 70.0% and 80.0% at 50 μg/mL）. Therefore, 13d can be used as a new lead structure for the development of antifungal agents.

摘要：用高温固相反应法合成了Sr_3Al_2O_6:0.05Eu^(3+)红光荧光粉,研究了样品的发光性质。在紫外光和近紫外光激发下,样品的发射光谱为Eu^(3+)的~5D_0→~7F_J(J=0,1,2,3,4)特征发射组成。荧光粉的激发光谱由宽带峰和锐峰组成。其中宽带峰是位于紫外区的O^2→Eu^(3+)的电荷迁移跃迁,锐峰是位于近紫外和可见光区的Eu^(3+)的f-f跃迁吸收。Sr_3Al_2O_6:Eu^(3+)是一种适于紫外光激发的红光荧光粉。

摘要：在区域除涝规划设计阶段,关键是要选择出合理的除涝工程标准。在选择的过程中,要考虑定量因素和定性因素。为协调各因素之间的复杂关系,提出将层次分析法和多目标模糊优选理论相结合,建立除涝工程标准方案多目标决策模型。运用层次分析法建立指标层次模型,根据不同决策人的偏好确定相应的指标权向量,在此基础上使用多目标模糊优选模型求解各方案最优相对隶属度,以确定最佳方案。经实例分析表明,该模型在确定区域除涝工程标准中具有重要的应用价值与现实意义,能为最后的总决策提供较为客观公正的依据。

摘要：目前中国文化创意产业的繁荣发展,极大的推动了中国传统文化的继承与弘扬。为了实现以用户期望意象风格为导向的文创产品设计方案,减少依赖设计师的设计主观意识,探索传统文化设计因子向现代创新型设计因子的转变途径。首先利用Illustrator软件提取传统文化元素设计因子样本,通过采用SD法、实验法、统计学理论对样本库中的单位设计因子收集意象形容词并进行意象值评价,确定相似意象与单位设计因子主副意象。其次通过意象与设计因子的关系建立基于关系数据库管理系统(RDBMS)的检索数据库并进行用户期望相似意象设计因子索引,将相似意象设计因子运用可拓学理论与菱形思维模型进行可拓变换重构设计。最后结合故宫文化元素设计因子的重构过程与设计应用验证了研究方法和研究流程的可行性。

摘要：The stability and reactivity of nanomaterials are of crucial importance for their application, but the long-term effects of stability and reactivity of nanomaterials under practical conditions are still not well understood. In this study, we first established a comprehensive strategy to investigate the stability of a highly reactive nanomaterial from the viewpoint of reaction kinetics with ultrathin tellurium nanowires （TeNWs） as a model material in aqueous solution through an accelerated oxidation process. This allowed us to propose a new approach for the design and synthesis of other unique one-dimensional nanostructures by a chemical transformation process using the intermediate nanostructures ＂captured＂ during the dynamic oxidation process under different conditions. In essence, the oxidation of ultrathin TeNWs is a gas-solid reaction which involves liquid, gas and solid phases. It has been demonstrated that the oxidation process of ultrathin TeNWs in aqueous solution can be divided into three stages, namely oxygen limiting, ultrathin TeNWs limiting and mass transfer resistance limiting stages. The apparent oxidation kinetics for ultrathin TeNWs is approximately in accord with a first order reaction kinetics model and has an apparent activation energy as low as TeNWs are thermodynamically unstable 13.53 ***^-1, indicating that ultrathin However, the unstable nature of ultrathin TeNWs is actually an advantage since it can act as an excellent platform to help us synthesize and design one-dimensional functional nanomaterials--with special structures and distinctive properties--which are difficult to obtain by a direct synthesis method.

摘要：该研究基于山东省聊城市2024年国省道干线公路养护工程,自主研发半柔性灌浆料并施工,通过基层混合料配合比设计及施工工艺研究,提出适用于半柔性路面复合路面灌注的关键技术。研究了灌注式半柔性复合路面的抗车辙机制,分析了材料组成和结构特性对车辙问题的抵抗作用。施工工艺包括旧路面处治、基体沥青混合料铺筑和半柔性材料灌注等环节。通过改进灌浆材料配方、优化基层沥青混合料设计和施工工艺,可进一步提升路面性能。

摘要：河流型水源泵站取水对河道内鱼类早期资源的卷吸效应会对河流鱼类资源产生不利影响。研究选择长江金刚沱泵站取水口,开展了不同取水口方案卷吸效应物理模型试验。研究结果表明,取水箱两侧钢板高度和引水管布置方向会影响卷吸效应,低侧板方案卷吸效应最明显,其产生的平均横向流速和平均垂向流速约为高侧板方案的1.4~1.8倍,并在纵向上对流速具有更为明显的减缓作用,使原本的河道纵向流速平均下降了30%。引水管垂向布置的卷吸效应范围比侧向布置宽约1.5~2 m,垂向管的卷吸范围在取水箱两侧均匀分布,侧向管布置引起卷吸效应在取水箱顶部产生约2.5~4 m的偏移。卷吸效应范围受河道流量影响,低流量工况下,不同方案的卷吸范围在13.5~18.5 m之间,与高流量工况相比,各方案的卷吸范围有小幅增大,平均增大了1.1倍。根据卷吸效应范围,研究中的高侧板侧向管方案最优,其较高的侧板和侧向引水管的布置型式能够减小卷吸效应,取水头部两侧较高的钢板能够对水流产生阻隔作用,一定程度上减缓了引水管直接对水流的卷吸,研究可为取水工程设计优化提供科学依据。

摘要：A series of tri-substituted chiral pyrrolidin-2-one derivatives have been designed and synthesized as CC chemokine receptor 4 （CCR4） antagonists. The structure of CCR4 was built by homology modeling. Asymmetric synthesis was applied to synthesize the R,R configuration chiral pyrrolidin-2-one scaffold. The stereoisomeric con- figurations of the compounds were identified by 2D I H-~H COSY spectroscopy and 1D NOESY spectroscopy. This method was more economical and convenient than traditional X-ray single crystal diffraction. In addition, the inter- actions between these compounds and the N-terminal extracellular tail of CCR4 were studied using capillary zone electrophoresis. The CCR4 chemotaxis inhibition effect was tested in CCR4-transfected HEK293 cells. Several compounds showed potent activities as CCR4 antagonists. Among these compounds, lc is the most active one. Its apparent binding constant of CZE experiment result is （1.569±0.11）× 10s L·mol ^-1, and its percentage inhibition of the HEK293/CCR4 cells migration with the concentration of I gmol·L ^-1 in DMSO is 59%. And compound If has slightly higher affinity to N-terminal of CCR4 according to its apparent binding constant than lb because of the in- troduced ester linkage. Further studies on the mechanism of these compounds are in progress.