摘要：大脑内的程序性细胞死亡(PCD)贯穿生命全过程,异常PCD可能是导致脑病的重要因素。本文围绕针刺对PCD的影响,从传统中医学角度总结了针刺产生脑保护作用的理论基础及多靶点、双向、整体调节等治疗特点;从现代医学角度对针刺调节细胞凋亡、自噬、焦亡、铁死亡、坏死性凋亡等方面进行了梳理,探讨针刺基于PCD恢复或重塑受损脑功能,改善脑病的作用机制。

摘要：目的:为满足各种功能和性能的需求及难以避免的约束和限制条件,形形色色的对称破缺现象普遍存在于各类机械系统、部件和零件之中。但目前国内外均没有对机械对称破缺种类、作用及其应用方法进行系统研究的报道。通过本文,读者能系统地了解对称破缺在机械系统中的存在和作用规律,并能够在机械设计中科学地应用对称破缺,更好地实现和发挥机械的预期功能和效益。创新点:1.创建机械对称破缺的概念和分类体系。2.揭示对称破缺与产品需求之间的关联性,提出应用对称破缺实现机械功能、性能和约束需求的8个设计原理。3.发明一种具有对称破缺特征的链传动结构新方案,且其传动平稳性显著优于现有链传动。方法:1.分析和借鉴生物学、材料结构学和建筑学等多学科中对称破缺的研究和应用成果。2.分析一千多个应用对称破缺的机械实例,并从中提炼和总结对称破缺在机械中的效用和应用规律。3.将归纳出的规律应用于对称破缺创新机械的实践。结论:1.对称破缺普遍存在于机械中,并起着不可或缺的作用。2.通过对大量机械实例中对称破缺所起作用的系统分析能够获取对称破缺作用于机械的规律性知识。3.应用上述规律性知识能实现机械产品的创新。

摘要：广告需要创意,但创意无论多么新奇也不能违反逻辑。但是现今媒体上听到、看到的广告却充斥着大量的逻辑错误,给公众一种误导:似乎广告是可以脱离逻辑的一种特殊语言形式。文章通过分析几个广告案例揭示其中常见的逻辑错误。

摘要：To ameliorate the disadvantages of imaging system coupled with imaging fiber bundle, a method by adding square aperture microlens arrays at both entrance and exit ends of the imaging fiber bundle is proposed to increase the system's coupling efficiency. The expressions for solving the parameters of both ends' microlens units are deducted particularly. The microlens arrays used for an infrared imaging fiber bundle with the single fiber diameter of 100 μm and core diameter of 70 μm are designed by this method. The simulation results show that compared with the system without microlens arrays, the fill factor of the imaging fiber bundle coupled microlens arrays system is increased from 44.4% to more than 90%, and the coupling efficiency is doubled too. So the design method is correct, and the introduction of microlens arrays into imaging fiber bundle coupled system is feasible and superior.

摘要：光伏组件的安装质量对光伏电站的长期稳定运行和高效发电至关重要。论文首先阐述了光伏组件安装施工质量控制的重要性,指出了光伏组件安装施工常见的质量问题,包括热斑、隐裂和功率衰减,分析了其原因、危害以及预防措施。最后深入研究了光伏组件安装施工质量控制措施,主要包括合理选择施工工艺和加强环境保护两方面。通过加强质量控制,可以减少安装缺陷,延长组件使用寿命,提升光伏电站的经济效益。

摘要：A 325-MHz superconducting half-wave resonator has been designed with β = 0.51. Three shapes of the inner conductors(race track, ring shape and elliptical shape) were optimized to decrease the peak electromagnetic fields and minimize the dissipated RF power on the cavity walls. In order to suppress the operation frequency shift caused by fluctuations of the helium pressure and maximize the tuning ranges, the frequency shifts and mechanical properties were studied on the electric and magnetic areas. The helium vessel was designed to keep the mechanical structure as robust as possible.

摘要：在高等教育教学不断改革的背景下,一些课程的授课方式依然采取了传统的教学模式,无法调动学生的学习兴趣和积极性,课堂参与率较低,从而影响教学的效果。为了解决一流本科课程教学中存在的弊端与不足,适应新时代高等教育教学的发展和人才培养的需求,教学团队通过优化课程教学内容、完善线上教学资源、引入翻转课堂、采用全过程评价的方式进行课程考核改革,构建线上线下协同融合互补的混合教学模式,并将课程思政融入混合式教学过程。通过混合式教学的实施,学生学习的积极性、参与率明显提高,学生分析和解决工程领域相关问题的能力进一步提升,教学效果得到明显改善。

摘要：传统室分分布系统多节点且无源,无法监控,隐性故障难发现。日常监控室分小区业务量骤降去判定室分问题时,无法准确定位是人流减少还是隐性故障导致。为此,本文提出了一种基于用户位置及流量变化监控室分质量的方法,通过时序聚类算法和时段感知常驻小区识别算法,构建室分小区常驻用户画像,结合业务情况,实现用户变化情况的监控,识别非人员变动引起的突发业务骤降情况,发现室分分布系统隐性故障,提升网络运维的效率,减少故障处理时间,保障网络服务的稳定性和可靠性,提高用户感知。

摘要：通过包头南海景区北入口广场的设计,探讨园林中雕塑的设计布局。使之从理念、功能、空间、细部融入整体园林之中。整合现有资源,使雕塑艺术与园林设计融为一体。在设计中运用雕塑艺术的设计理念,将园林看作一个大型的雕塑。在对园林造景材料的"雕"与"塑"过程中,实现设计理念的完美表达,并使科学性与艺术性完美融合。雕塑服从于园林的整体规划设计,园林环境为雕塑营造艺术氛围,两者共同构成一件完美的景观艺术品。

摘要：ANSYS, the software of construction analysis, is used to analyze static and dynamic performances of a XH2408 gantry style numerical control （NC） milling machining center and optimize its construction using the finite element method. First, a finite element model is established and the static and dynamic analysis are completed as constraints and loads applied on the finite element model. It is found that both spindle box and gantry are the worst components of assembly in performance. Secondly, the spindle box and gantry are chosen as objects of optimal design separately, aiming to improve their performance. The optimal plans are accomplished on the basis of the minimum volume for the spindle box and the maximum inherent frequency for the gantry subject to the constrains. Finally, the machine tool improved is analyzed statically and dynamically based on the optimal results of the spindle box and gantry. The results show that optimal design with the finite element method increases static and dynamical performances of the XH2408 gantry style numerical control milling machining center and the technique is effective and practical in engineering applications.