摘要：本文精心设计了一种具有聚集诱导发光增强特性的氰基苯乙烯基荧光团(Z-BDPA),由于其具有各种光化学反应和可逆的pH响应而呈现出多种可调节的颜色和荧光.在420 nm光照射下,Z-BDPA在四氢呋喃(THF)中发生Z→E异构化,其绿色荧光增强,该过程在365 nm光照射下可恢复;由于发生光二聚化过程,Z-BDPA在水含量(fw)为90%的THF/H_(2)O混合体系中的黄色荧光变为更强的黄绿色荧光.在酸性条件下,具有黄色荧光的Z-BDPA粉末通过质子化过程变为具有蓝色荧光的AIE荧光团Z-p-BDPA,该过程可通过在碱性条件下的去质子化作用恢复.在365 nm光照射下,Z-p-BDPA的蓝色荧光由于光异构化过程和随后的光环脱氢反应而蓝移且增强.基于其对于光化学反应和pH响应而呈现出的可调控的颜色和荧光,Z-BDPA可成功应用于光图案化和防伪.

摘要：In the conventional hot extrusion of metallic materials,the temperature of the workpiece varies during the whole extrusion process,leading to the non-uniformity of the product dimension,microstructure and *** the present research,a simulation model based on the principle of PID control was developed to establish ram speed profiles that can suppress the temperature evolution during the process to allow for isothermal *** this simulation model,the real-time extrusion ram speed was adjusted according to the simulated exit *** results show that temperature homogeneity is significantly improved not only along the extrudate length but also on its cross section in the case of extrusion in the isothermal mode with a designed ram speed profile in the extrusion process of AZ31 *** addition,die temperature varies over a more narrow range in comparison with extrusion in the conventional iso-speed mode.

摘要：The structure and measurement theory of a single-axis integrated inertia measurement device are discussed in this *** acceleration and angle velocity can be detected by the proposed sensor at the same *** ki- netic model of the device is also *** addition,the signal generation of the single-axis integrated inertia measurement device is analyzed and *** results of the model are consistent with simulation result.

摘要：The present paper proposes a novel design for achieving single-polarization single-mode （SPSM） operation at 1550 nm in photonic crystal fiber （PCF）, using a rectangular-lattice PCF with two lines of three central air holes enlarged. The proposed PCF composed entirely of silica material is modeled by a full-vector finite element method with anisotropic perfectly matched layers. Simulations show that single-polarization operation within broad wavelength range can be easily realized with the proposed structure. The wide- band SPSM operation features, the low confinement losses, and the small effective mode area are the main advantages of the proposed PCF structure. A SPSM-PCF with confinement loss less than 0.1 dB/km within wavelength range from 1370 to 1610 nm and effective mode area about 4.7μm^2 at 1550 nm is numerically demonstrated.

摘要：在这份报纸，产量反馈适应稳定与未知控制方向为非线性的系统的一个班被调查。首先通过线性州的转变，未知控制系数在一起是 lumped，原来的系统被转变到控制设计为变得可行的一个新系统。在为状态和参数估计的一个观察员和一个评估者的介绍以后，分别地，然后，一个建设性的设计过程为产量反馈被给使用综合者 backstepping 并且调节功能技术的适应稳定控制器。而所有另外的靠近环的系统状态被围住，设计的控制器保证状态集成到起源的原来的系统，这被显示出而所有另外的靠近环的系统状态被围住。模拟结果被说明显示出建议途径的有效性。

摘要：这份报纸从在为一个具体例子维持需要的控制性能的前提减少控制努力的观点设计一个改进产量反馈控制器。产量反馈控制器保证全球性由介绍新重新可伸缩的转变，收养一个有效还原剂顺序观察员，并且选机灵的 Lyapunov 功能和适当设计为参数的靠近环的系统的 asymptotical 稳定性。从理论分析和一个具体例子，同时，为获得参数和重新可伸缩的转变参数的更小的批评价值被获得有效地比相关报纸的设计减少控制努力和控制器的变化的率。

摘要：The interior corner flow theory is fundamental for liquid management in space. In this paper, the interior corner flow theory is modified by correction of the curvature and shape parameters based on geometry relationship, so that it can be extended to a wide range of applications including different dihedral angles and contact angles. This modification is validated with the data provided by the references using capillary tube and drop tower. Besides, the errors between the theory and experiment value are analyzed for the case of small viscosity and the long-time flow, finding that the main reason causing the error is the transformation of the flow resistance along the flow path. At last, the theory of interior corner flow is applied to the primary design of the Propellant Management Device in satellite tank, and optimum design of the vanes is given in terms of maximum flow rate.

摘要：Steam generator is optimized by applying entransy dissipation extremum principle and constructal theory and adopting analyti-cal *** obtained results show that the optimal spacing between adjacent tubes,the mass flow rate of gas and the maximum entransy dissipation rate all depend on the dimensionless diameter of one tube,the dimensionless pressure difference number and the dimensionless length of flow channel of *** the three dimensionless groups,the optimal numbers of riser tubes and downcomer tubes and their summation all depend on the dimensionless height of one *** maximum entransy dissipation rate increases as the pressure difference that drives the gas flowing increases,and as the diameter of one tube and the length of flow channel both *** mean heat flux in the heat transfer process of hot gas grows greatly,and the performance of the system is *** with the optimal construct with heat transfer rate maximization,the optimal construct with entransy dissipation rate maximization can improved the heat transfer effect of the steam generator more.

摘要：The photonic crystal fiber-based surface plasmon resonance （SPR） refractive index sensor is demonstrated by using post-processing technique of photonic crystal fiber （PCF）. The coupling of PCF mode field and SPR can be controlled by the air holes collapsing in PCF. The effects of metal film thickness and air hole diameter on the sensor at different wavelength are simulated by using finite element method. The simulation results are analyzed by using the modes matching theory. The amplitude based and spectrum based detection methods are discussed respectively. Refractive index sensitivity 1 700 nm/per refractive index unit （RIU） can be achieved for an aqueous analyte.

摘要：A new complementary metal oxide semiconductor UV/blue-extended photodiode was presented for light detection in the UV/blue spectral range. Photoelectric characteristics of this presented photodiode were studied by numerical modeling and device simulation. Technology computer aided design simulation was done first to analyze its photoelectric characteristics. The structure characteristic and depletion situation of space between two adjacent P+ anodes were discussed. The reverse characteristic, spectral response characteristic and DC characteristic were discussed in detail. For the numerical modeling, dead layer effect is considered in the building of analytical mode. Dead layer is a space in which the boron doping profile decreases towards the surface due to high doping effects and boron redistribution, which affects the sensitivity of photodiode in the UV range seriously. Reverse characteristics and spectral response characteristics were modeled and analyzed typically. At last, silicon test results were given and compared with the simulated result, which shows reasonable match for each.