摘要：A robust control strategy using the second-order integral sliding mode control(SOISMC)based on the variable speed grey wolf optimization(VGWO)is *** aim is to maximize the wind power extraction of wind ***,according to the uncertainty model of wind turbine,a SOISMC torque controller with fast convergence speed,strong robustness and effective chattering reduction is designed,which ensures that the torque controller can effectively track the reference ***,given the strong local search ability of the grey wolf optimization(GWO)and the fast convergence speed and strong global search ability of the particle swarm optimization(PSO),the speed component of PSO is introduced into GWO,and VGWO with fast convergence speed,high solution accuracy and strong global search ability is used to optimize the parameters of wind turbine torque ***,the simulation is implemented based on Simulink/*** results demonstrate the effectiveness of the proposed strategy under both external disturbance and model uncertainty.

摘要：In this work,the impact of internal heat integration upon process dynamics and controllability by superposing reactive section onto stripping section,relocating feed locations,and redistributing catalyst within the reactive section is explored based on a hypothetical ideal reactive distillation system containing an exothermic reaction:A + BC + *** state operation analysis and closed-loop controllability evaluation are carried out by comparing the process designs with and without the consideration of internal heat *** superposing reactive section onto stripping section,favorable effect is aroused due to its low sensitivities to the changes in operating *** ascending the lower feed stage,somewhat detrimental effect occurs because of the accompanied adverse internal heat integration and strong sensitivity to the changes in operating *** descending the upper feed stage,serious detrimental effect happens because of the introduced adverse internal heat integration and strong sensitivity to the changes in operating *** redistributing catalyst in the reactive section,fairly small negative influence is aroused by the sensitivity to the changes in operating *** reinforcing internal heat integration with a combinatorial use of these three strategies,the decent of the upper feed stage should be avoided in process *** the conclusions are derived based on the hypothetical ideal reactive distillation column studied,they are considered to be of general significance to the design and operation of other reactive distillation columns.

摘要：Based on the biological prototype characteristics of shark’s gill jet orifice,the flexible driving characteristics of ionic exchange polymer metal composites(IPMC)artificial muscle materials and the use of sleeve flexible connector,the IPMC linear driving unit simulation model is built and the IPMC material-driving dynamic control structure of bionic gill unit is ***,through the stress analysis of bionic gill plate and the motion simulation of bionic gill unit,it is verified that various dynamic control and active control of the jet orifice under the condition of different mainstream field velocities will be taken by using IPMC ***,the large-deflection deformation of bionic gill plate under dynamic pressure and the comparative analysis with that of a rigid gill plate is studied,leading to the achievement of approximate revised modifier from real value to theoretical value of the displacement control of IPMC.

摘要：Microstructures and mechanical properties of dual-phase AlxCrMnFeCoNi (x=0.4, 0.5, 0.6, at.%) alloys were investigated. Thermomechanical processing leads to a microstructural evolution from cast dendritic structures to equiaxed ones, consisting of face-centered cubic (fcc) and body-centered cubic (bcc) phases in the two states. The volume fraction of bcc phase increases and the size of fcc grain decreases with increasing Al content, resulting in remarkably improved tensile strength. Specifically, the serrated flow occurring at the medium temperatures varies from type A+B to B+C or C as the testing temperature increases. The average serration amplitude of these Al-containing alloys is larger than that of CoCrFeNiMn alloy due to the enhanced pinning effect. The early small strain produces low-density of dislocation arrays and bowed dislocations in fcc grains while the dislocation climb and shearing mechanism dominate inside bcc grains. The cross-slip and kinks of dislocations are frequently observed and high-density-tangled dislocations lead to dislocation cells after plastic deformation with a high strain.

摘要：快速消除感染和促进骨再生是骨髓炎临床治疗的两个关键环节.当前迫切需要开发高效的生物活性声敏剂用于声动力治疗(SDT).在此,我们设计了一种二维Nb_(2)C纳米片修饰的卟啉基金属有机框架纳米平台(HNTM/Nb_(2)C)用于在超声辐照下同时消除感染和加速骨再生.通过在HNTM和Nb_(2)C纳米片之间构建肖特基结,实现了超声辐照下快速的电荷转移并抑制电子-空穴对的重组,从而产生丰富的活性氧.这种新型的声敏剂可以加速干细胞向成骨细胞的分化.RNA测序表明,该HNTM/Nb_(2)C纳米平台通过阳离子释放及超声响应电流引起的ATP合成耦合的电子传递诱导干细胞分化.此外,KEGG通路富集分析表明,Nb离子可能通过激活Wnt信号通路进一步促进成骨.我们的研究为骨髓炎的高效SDT提供了新的策略,该策略通过声响应电流联合离子疗法,实现了感染的消除同时促进了骨再生.

摘要：Taking advantage of the new standard HTML5,we designed an online tool called a browser/server-based glaucoma image database builder(BGIDB)for the demarcation of the optic disk and cup’s ellipse-like *** B-spline interpolation algorithm is used,and a specially designed algorithm is proposed for classifying the disease grade according to the disc damage likelihood scale criterion,which is correlated strongly with the glaucoma process by *** tool exhibits the best performance with a low overlapping error of 4.34%for the optic disk demarcation and 8.31%for the optic cup *** also has preferable time-consuming as compared to other tools and is a cross-platform *** tool has already been utilized in building the ophthalmic image database in the cooperation of Center for Ophthalmic Imaging research and The Second Xiangya Hospital.

摘要：本文利用一种简单的化学配体控制氧化方法,将NiFeCoAlOOH纳米颗粒负载在钛掺杂的纳米多孔赤铁矿光阳极上(Ti-PH),并将其用于光电催化水分解、由于NiFeCoAlOOH能够帮助提升Ti-PH光阳极的析氧反应动力学并且降低表面电荷转移电阻,修饰后的光阳极相对于1.23 V ***时具有2.46 mA/cm^(2)的光电流密度,并且与Ti-PH或空白赤铁矿光阳极相比具有更好的稳定性.此外,对比钛掺杂的纳米多孔赤铁矿光阳极,NiFeCoAlOOH修饰后的光电流的起始电位负移了~60 mV.这项工作为设计高性能、稳定、廉价的光电化学电池提供了一种具有潜力的催化剂修饰方法.

摘要：In this paper, we study the thermodynamic geometry for the charged Ad S black hole surrounded by quintessence. Three different kinds of the geometries are constructed, and the corresponding curvatures are obtained. It is found that there are different divergence behaviors of these curvatures, which is general thought to closely link to the phase transition of the black hole.

摘要：相比于传统的风洞设备,低温风洞可以生成更高雷诺数的气流,而风洞降温过程中残留的痕量水蒸气可能会影响试验件气动参数的测量。痕量水结冰的热力学过程复杂,实验测试较为困难,其机理仍需深入研究。针对该问题,本文基于欧拉方法建立了空气⁃过冷水滴⁃冰晶多相流模型,仿真结果与文献中的实验数据吻合度较高,进一步采用该模型获得了低温风洞中水蒸气凝结液滴/冰晶撞击翼型的结冰过程,探究了气流中总的水含量、融化比、气流温度、压力、马赫数等参数对结冰过程的影响,并定量分析了结冰现象对翼型气动参数的影响,可为低温风洞的实际运行提供一定的理论参考。

摘要：A novel N-doped TiO2 （N1-N2-TiO2） with substitutional and interstitial N impurities simultaneously was successfully synthesized. The catalyst was characterized by X-ray diffraction, X-ray photoelectron spectroscopy, diffuse reflectance spectroscopy, photoluminescence, and electron paramagnetic resonance. The results demonstrated that the nitrogen was substituted for the lattice oxygen atoms, and was also interstitially doped into the TiO2 lattice. The photocatalytic tests indicated that the N1-N2-TiO2 showed the highest photocatalytic activities of all the N-doped TiO2 under visible light, attributing to the synergetic effect of substitutional and interstitial nitrogen of N-doped TiO2.