摘要：Bacterial infection is a major problem following bone implant ***,poly-l-lactic acid/carbon nanotube/hydroxyapatite(PLLA/CNT/HAP)bone scaffolds possess enhanced mechanical properties and show good ***,wesynthesizedsilver(Ag)-dopedCNT/HAP(CNT/Ag-HAP)nanohybrids via the partial replacing of calcium ions(Ca2+)in the HAP lattice with silver ions(Ag+)using an ion doping technique under hydrothermal ***fically,the doping process was induced using the special lattice structure of HAP and the abundant surface oxygenic functional groups of CNT,and involved the partial replacement of Ca2+in the HAP lattice by doped Ag+as well as the in situ synthesis of Ag-HAP nanoparticles on CNT in a hydrothermal *** result-ing CNT/Ag-HAP nanohybrids were then introduced into a PLLA matrix via laser-based powder bed fusion(PBF-LB)to fabricate PLLA/CNT/Ag-HAP scaffolds that showed sustained antibacterial *** then found that Ag+,which pos-sesses broad-spectrum antibacterial activity,endowed PLLA/CNT/Ag-HAP scaffolds with this activity,with an antibacterial effectiveness of 92.65%.This antibacterial effect is due to the powerful effect of Ag+against bacterial structure and genetic material,as well as the physical destruction of bacterial structures due to the sharp edge structure of *** addition,the scaffold possessed enhanced mechanical properties,showing tensile and compressive strengths of 8.49 MPa and 19.72 MPa,***,the scaffold also exhibited good bioactivity and cytocompatibility,including the ability to form apatite layers and to promote the adhesion and proliferation of human osteoblast-like cells(MG63 cells).

摘要：Blades are one of the important components on aircraft *** they break due to vibration failure,the normal operation of the entire engine will be ***,it is necessary to measure their natural frequency before installing them on the engine to avoid *** present,most blade vibration testing systems require manual operation by operators,which has high requirements for operators and the testing process is also very ***,the testing efficiency is low and cannot meet the needs of efficient *** solve the current problems of low testing efficiency and high operational requirements,a high-precision and high-efficiency automatic test system is *** testing accuracy of this system can reach ±1%,and the testing efficiency is improved by 37% compared to manual ***,the influence of compression force and vibration exciter position on natural frequency test is analyzed by amplitude-frequency curve,so as to calibrate servo cylinder and fourdimensional motion ***,the sine wave signal is used as the excitation to sweep the blade linearly,and the natural frequency is determined by the amplitude peak in the frequency ***,the accuracy experiment and efficiency experiment are carried out on the developed test system,whose results verify its high efficiency and high precision.

摘要：One of the reasons behind failed engineering surfaces and mechanical components is particle erosion wear;thus,to mitigate its happening,biomimetic engineering is the current state-of-the-art being ***,this paper reviews the literature and the development trends on erosive wear resistance that employ biomimetic methods as well as analyze the bio-inspired surface,the bio-inspired structure,the bio-based materials,the associated challenges,and the future ***,the feasibility of the multi-biological and perspective on the coupling biomimetic method for anti-erosion wear are *** is concluded that the design of anti-erosion materials or structures by the bio-inspired methods is of great significance in the development of engineering applications.

摘要：这份报纸涉及差错察觉(FD ) 为有隧道 fadings，随机发生的多重通讯延期，和无穷地分布式的延期的分离时间的随机的系统的一个班的问题。所有三现象有随机发生和互相独立，但是服从 Bernoulli 分发的随机的变量的三个序列的特征被采用描述他们。这份报纸的目的是设计一个 FD 过滤器以便 FD 动力学在吝啬的平方并且，同时是指数地稳定的在剩余信号和差错信号之间的错误被使尽可能小。集中的分析被利用为设计 FD 过滤器导出足够的条件，它保证指数的稳定性和规定 H 表演。FD 过滤器参数被解决一个凸的优化问题获得。一个解说性的例子被提供表明 FD 设计计划的有效性。

摘要：基于的波浪精力种的震荡的水列(OWC ) 为把灵魂力量变换成柄力量与双向汽轮机的几种类型被设计了。有连接指南翼和固定指南翼的推动汽轮机在印度波浪精力植物被测试了。这在有井鈥檚 汽轮机的起始的试验以后。与有一个线性抑制特征的井鈥檚 汽轮机相对照，推动汽轮机有非线性的抑制。这在全面精力变换有重要效果从向电线招手。优化波浪精力植物与在大量流动系数上的线性抑制和好效率要求一台汽轮机。这个工作描述如此的一个图案怎么能用固定指南翼推动汽轮机被做。印度波浪精力植物被用作案例研究。

摘要：可再生能源发电因其间歇性而具有多变性,对发展中国家来说,可再生能源发电的成本很高。由于电价定价和机制设计不合理,上网电价和净计量等支持性政策和方案对消费者也没有太大吸引力。屋顶太阳能光伏系统自用技术可以避免这些方案的缺点,因为这种技术比公用电网的发电成本更低。因此,产消者可以以最低价格使用大部分电力,更具吸引力。本文分析了并网工业太阳能光伏发电系统的成本和可行性。结果发现,基于储能并网的光伏系统成本为0.0086$/(kW·h),公用电网将以0.062$/(kW·h)的价格出售给产消者,与使用时间评级模型相比,年能源成本将降低35.23%。此外,所提出的方案可满足96%的年能源需求,保证了供应的安全性,所提出的模型可用于其他发展中国家。

摘要：Understanding the relation between multiple agents is very important in developing a multi agent system. Two concepts, multi agent system architecture and multi agent system architecture prototype are brought forward, and the method of descrbing the relation between agents using the concepts is explored. The structure and components are designed. Based on the fact that cooperation between distributed agents is erratic, a controlled natural language communication function is designed and realized. Applying the offered interfaces, the user′s workload consumed in agent communication and management is reduced, and at the same time, robustness of the multi agent system is improved.

摘要：一个 Crank-Nicolson 计划基于 nonconforming，有动人的格子的有限元素在各向异性的网孔下面为寓言的 integro 微分的方程的一个班被讨论。相应集中分析被介绍，错误估计被使用插值操作员而不是是在在以前的文学的传统的有限元素方法的集中分析的一个不可缺少的工具的常规椭圆形的设计获得。

摘要：A methodology for topology optimization based on element independent nodal density(EIND) is *** densities are implemented as the design variables and interpolated onto element space to determine the density of any point with Shepard interpolation *** influence of the diameter of interpolation is discussed which shows good *** new approach is demonstrated on the minimum volume problem subjected to a displacement *** rational approximation for material properties(RAMP) method and a dual programming optimization algorithm are used to penalize the intermediate density point to achieve nearly 0-1 *** are shown to meet stability,mesh dependence or non-checkerboard patterns of topology optimization without additional ***,the computational efficiency is greatly improved by multithread parallel computing with OpenMP.