摘要：Aim To evaluate the effects of maxillary sinus floor elevation by a tissue-engineered bone complex of β-tricalcium phosphate （β-TCP） and autologous osteoblasts in dogs. Methodology Autologous osteoblasts from adult Beagle dogs were cultured in vitro. They were further combined with β-TCP to construct the tissue-engineered bone complex. 12 cases of maxillary sinus floor elevation surgery were made bilaterally in 6 animals and randomly repaired with the following 3 groups of materials： Group A （osteoblasts/D-TCP）; Group B （β-TCP）; Group C （autogenous bone） （n=4 per group）. A polychrome sequential fluorescent labeling was performed post-operatively and the animals were sacrificed 24 weeks after operation for histological observation.Results Our results showed that autologous osteoblasts were successfully expanded and the osteoblastic phenol- types were confirmed by ALP and Alizarin red staining. The cells could attach and proliferate well on the surface of the ~3-TCP scaffold. The fluorescent and histological observation showed that the tissue-engineered bone complex had an earlier mineralization and more bone formation inside the scaffold than β-TCP along or even autologous bone. It had also maximally maintained the elevated sinus height than both control groups. Conclusion Porous 13-TCP has served as a good scaffold for autologous osteoblasts seeding. The tissue-engineered bone complex with β-TCP and autologous osteoblasts might be a better alternative to autologous bone for the clinical edentulous maxillary sinus augmentation.

摘要：为了研究水平布管重力型分离式热管在空调余热回收领域的应用,本文设计了分离式热管的实验装置,进行了充液率的实验研究,并借助红外热力成像仪,首次应用图像可视化分析了不同充液率条件下热管蒸发器的工作状态.研究结果表明：热管的换热量随充液率的不同而发生变化,最佳充液率为45％ ～52％.通过能效比分析,最佳充液率时其能效比能达到8.4,表明水平布管重力型分离式热管节能效果显著,具有推广价值.

摘要：提出了一种应用热泵节能技术的高效界面渐进冷冻试验系统,并对该系统中的界面渐进结冰融冰过程进行了分析和研究,试验数据重复性良好,验证了所建试验系统的可靠性。研究结果表明,随着换热管表面结冰厚度的增加,系统性能系数和换热管结冰速率都有一个从迅速减小到缓慢减小再迅速减小的过程;增加管排密度、减小结冰厚度或采用带肋片的换热器,能够显著提高系统的性能系数;采用特殊设计的在低压比下高效运行的压缩机,能够大幅提高系统的性能系数。

摘要：本文首先对GNSS数据产品服务平台的建设背景及其系统设计框架进行概述,进而介绍了平台的关键组成模块——GNSS数据采集软件。因GNSS数据采集要求安全可靠,调研后引入了SFTP安全文件传输技术,并开展了基于SFTP技术的采集软件方案的设计与实现。该方案保证了数据采集的简便、稳定和安全,为服务平台的整体建设与运行提供了有效保障。

摘要：货主选择承运航线的影响因素,既包括挂靠港口的计划到港时间与单箱运价,还包括反映班轮运营稳定性的甩箱率与准班率。对此,文章将挂靠港口的航行与在港时间不确定引入研究,并对挂靠港口间的不确定性建立联系,基于航次仿真来计算各挂靠港的到港时间分布、船舶的航次最大载箱量分布。以班轮航线的甩箱率与准班率限制、内支线最大船型与最长往返时间为约束,在优化内支线航线网络结构的同时,计算航线适配船型、班期密度及挂靠港计划到港时间。针对所构建的带不确定参数的NP难问题,文章设计了基于模拟仿真的智能优化算法,通过方案仿真技术来处理输入模型的众分布函数,借助智能优化原理从大范围解空间内寻找满意方案。文末对船舶航次仿真与网络规划模型的有效性进行了验证,算例分析表明:内支线班轮航线网络的货主选择比例达64%,且不论货主更偏好运输时间或价格,航线方案皆能贴近货主偏好。

摘要：以矩阵半张量积为基本工具研究了基于奖惩并举策略的智猪控制网络演化博弈的动态过程.分析了演化过程全局收敛到全合作的均衡状态的充要条件并设计出了相应的控制序列,给出了在一系列控制下使得演化动态达到全合作的初始状态的选取方法,简单讨论了奖惩因子对最终合作水平的影响.

摘要：储能技术与电力系统紧密相连,共同支撑着现代能源体系的转型与发展。在当前全球推动“双碳”目标即碳达峰和碳中和的背景下,储能技术成为了电力系统中不可或缺的一部分。基于此概念,从减少成本的角度分析储能技术与电力系统的优化设计具有重大的现实意义。对此,本文针对成本角度分析储能技术与电力系统的优化设计进行综述,包括储能技术与电力系统的研究进展,以及当前储能技术与电力系统的工作原理和优势等;再以此为基础,重点阐述了如何在成本角度进行储能技术与电力系统的优化设计。

摘要：该文针对长距离压杆测压系统的频谱带宽不足问题,在常规电缆补偿技术的基础上,提出一种系统整体补偿方法。设计相应的补偿电路,利用Multisim电路仿真软件进行辅助设计和优化,同时利用扫频方法和阶跃响应方法估算系统的带宽,通过现场测试,补偿后测试系统的带宽达到约600 k Hz,输出信号幅值为原系统的1/2,满足压杆测压系统的带宽需求。制作相应的补偿器,测试得到补偿前后系统的幅频曲线和阶跃响应曲线,两种曲线均证明补偿后系统的带宽优于补偿前系统带宽,说明系统整体补偿方法的有效性,为现场测试系统的频谱快速补偿提供参考。

摘要：Electrically responsive electrochemical actuators that contain a polymer electrolyte membrane laminated between two electrodes have attracted great attention due to their potential applications in smart electronics,wearable devices,and soft ***,some challenges such as the achievement of large bending strain under low applied voltage and fast ion diffusion and accumulation still exist to be *** key to the solution lies in the choice of electrode materials and the design of electrode *** this study,an engineering electrochemical actuator that presents large bending strain under low applied voltage based on MXene/polystyrene-MXene hybrid electrodes is *** developed electrochemical actuator based on the MXene/polystyrene-MXene 3D-structure is found to exhibit large bending strain(ca.1.18%),broad frequency bandwidth,good durability(90%retention after 10,000 cycles)and considerable Young’s modulus(ca.246 MPa).The high-performance actuation mainly stems from the excellent properties of MXene and 3D-structure of the *** MXene provides excellent mechanical strength and high electrical conductivity which facilitate strong interaction and rapid electron transfer in *** 3D architectures formed by polystyrene microspheres generate unimpeded ion pathways for ionic short diffusion and fast *** study reveals that the 3D-structure hybrid electrodes play a crucial role in promoting the performance of such electrochemical actuators.

摘要：针对大型温室群普遍存在耗能高、监测困难及温度调控滞后等问题,设计集光伏发电、低功耗广域物联网和长短期记忆网络预测技术于一体的温室监控系统。根据广西桂南地区的气候特征,通过Ecotect仿真得出屋顶光伏组件覆盖率在25%或33%时可兼顾光伏发电和温室内部采光效果。监控系统利用LoRa和NB—IoT技术混合组网实现环境参数的无线采集,上位机结合云平台及物联网技术对温室环境进行远程监控,并运用采集数据训练WOA—LSTM模型为温度预测提供支撑。测试表明,系统通信距离在500 m内,丢包率不超过3%,满足大型温室群对环境信息采集和稳定传输的需求,温度预测模型的均方根误差和平均绝对误差分别为0.476℃、0.367℃,可为温度预测和提前调控提供参考。该系统能够实现温室环境的实时监测、温度预测与调控,可为进一步提高温室种植作物的产量和质量提供借鉴。