摘要：As a famous hole transporting material, nickle oxide (NiOx) has drawn enormous attention due to its low cost and superior stability. However, the relatively low conductivity and high-density surface trap states of NiOx severely limit device performance in solar cell applications. Interfacial engineering is an efficient approach to achieve remarkable hole-transporting performance by surface passivation. Herein, the efficient NiOx hole transport layer was prepared by surface passivation engineering strategy via facile solution processes with cesium iodide (CsI). It is demonstrated that CsI plays a super-effective dual-function role in inverted solar cell device: On one hand, the presence of CsI hugely passivates the surface trap states at the NiOx/perovskite interface along with obviously improved conductivity by the incorporated Cs^(+);on the other hand, the ions immigration is significantly suppressed by the presence of I ion for high-quality perovskite films, resulting in a stable contact interface. The ameliorative interface leads to largely reduced carrier non-radiative recombination, attributing to boosted carrier extraction efficiency. As a result, decent power conversion efficiency (PCE) of 18.48% with a noticeable fill factor (FF) beyond 80% was achieved. This facile and efficient surface engineering approach with dual-function shows excellent potential for the design of high-performance functional interfacial modification layer to achieve high-performance solar cells.

摘要：In this paper, based on analyses of the Chinese Area Positioning System (CAPS) satellite (GEO satellite) resources and signal properties, the signal power at the port of the receiver antenna is estimated, and the implementation projects are presented for a switching band C to band L CAPS C/A code receiver integrated with GPS receiver suite and for a CAPS dual frequency P code receiver. A microstrip receiving antenna is designed with high sensitivity and wide beam orientation, the RF front end of the C/A code and P code receivers, and a processor is designed for the navigation baseband. A single frequency CAPS C/A code receiver and a CAPS dual frequency P code receiver are built at the same time. A software process flow is provided, and research on relatively key techniques is also conducted, such as signal searching, code loop and carrier loop algorithms, a height assistant algorithm, a dual frequency difference speed measurement technique, a speed measurement technique using a single frequency source with frequency assistance, and a CAPS time correcting algorithm, according to the design frame of the receiver hardware. Research results show that the static plane positioning accuracy of the CAPS C/A code receiver is 20.5-24.6 m, height accuracy is 1.2-12.8 m, speed measurement accuracy is 0.13-0.3 m/s, dynamic plane positioning accuracy is 24.4 m, height accuracy is 3.0 m, and speed measurement accuracy is 0.24 m/s. In the case of C/A code, the timing accuracy is 200 ns, and it is also shown that the positioning accuracy of the CAPS precise code receiver (1σ ) is 5 m from south to north, and 0.8 m from east to west. Finally, research on positioning accuracy is also conducted.

摘要：提出并设计了一种带盘管式冷凝器和储液罐的回路热虹吸管,研究了3种充液率下回路热虹吸管的启动和内部流动传热特性。由于回路热虹吸管内沸腾和冷凝过程之间具有强耦合关系,对描述相变的传统Lee模型进行了改进,并引入了饱和温度与局部压力之间的关系,以准确模拟回路热虹吸管内的气液相变和流动传热过程。结果表明:该模型对回路热虹吸管内传热传质过程的预测效果良好;当回路热虹吸管在80%充液率的准稳态工况下运行时,完整的流动循环整体可分为液体过冲、液体回落和大气泡推动液体上升3个阶段,并且随着加热功率的增大,振荡更加明显;回路热虹吸管在仅依靠工质的流动循环和相变传热时,等效导热系数可超过15000 W/(m·K);在较高热流下,80%充液率的回路热虹吸管形成了速度较快且持续稳定的流动循环,表现出较好的传热性能。

摘要：十四五期间乡村振兴战略正以崭新的姿态全面推进,近年来各地区积极探索乡建的路径与方法,期间艺术家群体提出了以艺术手段介入乡建的新思路,学界对此策略进行了实践。其中墓园空间的设计研究关系到乡村环境、民众情感、土地安全、区域生态等多个层面,具有特殊意义。本文梳理了墓园空间的设计沿革与当下殡葬空间营建所面临的困境,分析了艺术介入手段在实践性、互动性与组织性方面的优势,以淮安市福寿花园作为案例实证,提出在艺术介入框架下对墓园空间与纳骨建筑进行一系列的优化与设计。

摘要：Objective： To provide essential information for peptide inhibitor design, the interactions of Eps15 homology domain of Eps15 homology domain-containing protein 1 （EHD1 EH domain） with three peptides containing NPF （asparagine-proline-phenylalanine）, DPF （aspartic acid-proline-phenylalanine）, and GPF （glycine-proline-phenylalanine） motifs were deciphered at the atomic level. The binding affinities and the underlying structure basis were investigated. Methods： Molecular dynamics （MD） simulations were performed on EHD1 EH domain/peptide complexes for 60 ns using the GROMACS package. The binding free energies were calculated and decomposed by molecular mechanics/ generalized Born surface area （MM/GBSA） method using the AMBER package. The alanine scanning was performed to evaluate the binding hot spot residues using FoldX software. Results： The different binding affinities for the three peptides were affected dominantly by van der Waals interactions. Intermolecular hydrogen bonds provide the struc- tural basis of contributions of van der Waals interactions of the flanking residues to the binding. Conclusions： van der Waals interactions should be the main consideration when we design peptide inhibitors of EHD1 EH domain with high affinities. The ability to form intermolecular hydrogen bonds with protein residues can be used as the factor for choosing the flanking residues.

摘要：变转速及变导静叶片角度是实现轴流压气机扩稳增效的两个最有效性能调节方法,对航机、燃机、工业压缩系统的高效宽工况运行具有重要影响。本文针对多级高速轴流压气机易出现低转速下裕度不够的问题,对某3.5级高速轴流压气机在100%~70%设计转速范围内四种转速下的内部流动进行了全三维定常数值模拟,重点分析了低转速下的失速特性及其流动失稳机理。结果表明:100%、90%设计转速下失速裕度为16.58%、32.22%;在80%、70%设计转速下失速裕度分别为0.22%、0.34%,性能曲线表现出突变失速的不连续性。分析流动机理后发现80%转速下流动失稳现象为R1叶尖部分叶高失速,该失速无法通过增大流量解除;70%转速下流动失稳现象为S2角区分离引起S3双开型角区分离失速,该失速可通过增大流量解除。研究工作对完善多级高速轴流压气机导静叶调节扩稳设计具有指导价值。

摘要：针对增强型罗兰(eLORAN)系统增补发射台站建设中的组重复周期(GRI)选择问题,该文主要从数学的角度出发,提出一种基于交叉干扰率的筛选算法。该算法首先考虑了最小可用组重复周期以及秒信息量的要求,并在此基础上通过比较与临近的罗兰C台站间的相对交叉干扰率进行1次筛选;之后通过排列组合进行两两比较并2次筛选;最后,综合考虑数据率要求、系统规范、无交叉干扰等条件,得到最优组重复周期组合。随后,鉴于新型eLORAN系统的高精度授时要求,在GRI最优组合中进行了优选。分析结果表明,该方法得出的优选组合的平均交叉干扰率与现有导航台链相当,同时可兼顾授时需求,可以为高精度地基授时系统建设提供参考性建议和理论依据。

摘要：详细推导了基于功率倒置阵列的线性约束最小方差(LCMV)算法及其递推公式,避免了矩阵求逆的复杂运算。然后在Matlab环境里构建了仿真模型来模拟实际的接收环境和复现阵列接收到的信号,对均匀线阵和圆阵都做了仿真,并得到了相应的阵列波束图,为自适应天线的实用设计提供了参考和依据。仿真结果表明:该算法收敛速度快、易于实现,利用LCMV算法作为自适应算法的功率倒置阵列抗干扰方案适合在强干扰的环境下工作,干扰越强,其对应的零陷越深。

摘要：小说文本借助先进的科学技术,尤其是互联网和新兴媒体平台,经过创造性转化,以视听媒体的形式呈现,进而被赋予第二生命力和新颖的诠释。在小说改编电影的过程中对文学作品的中心思想、角色塑造、故事脉络、叙述手法以及结局进行一系列的艺术性调整。这种调整遵循特定的艺术规则,并满足一定的审美标准。蒙古族当代小说的电影改编仍处于不断探索阶段,目前已取得一定的改编经验,但并未形成完备的电影改编理论和体系,小说改编电影在主题转换定位上通常采用再现主题和重构主题的两种形式,实现理论与实践、文学性与大众化、高雅与通俗等相结合,努力打通文学与电影间的艺术壁垒。

摘要：机匣处理作为现代高负荷压气机解决裕度不足问题的重要手段,对保障燃机运行安全性及装置技术先进性具有重要影响。本文针对多级高速轴流压气机易出现低转速下裕度不足的问题,对某3.5级高速轴流压气机在新型复合沟槽式机匣处理下70%~100%设计转速范围内的四种转速进行了全三维定常数值模拟,结合低转速下光壁机匣的失稳特性重点分析了复合沟槽式机匣处理的扩稳流动机理。结果表明:复合沟槽式机匣处理显著提高了80%设计转速下的失速裕度,裕度提高了13.73%。扩稳机理为:后段槽内泄漏间歇性降低叶尖两侧压差,削弱叶顶间隙泄漏射流强度;叶顶间隙泄漏流、叶尖前缘泄漏涡以及叶片表面附面层被抽吸进入后段槽阻断旋绕从而抑制泄漏涡的形成;前段槽回流在一定范围内降低了第一级动叶进气冲角。研究工作对提高压气机性能调节技术水平具有重要指导价值。