摘要：With the continuous improvement of solar energy production capacity,how to effectively use the electricity generated by renewable solar energy for electrochemical conversion of biomass is a hot *** conversion of 5-hydroxymethylfurfural(HMF)to biofuels and value-added oxygenated commodity chemicals provides a promising and alternative pathway to convert re-newable electricity into *** nickel-based eletrocatalysts are well-known for HMF oxidation,their relatively low intrinsic activity,poor conductivity and stability still limit the poten-tial ***,we report the fabrication of a freestanding nickel-based electrode,in which Ni(OH)_(2) species were in-situ constructed on Ni foam(NF)support using a facile ac-id-corrosion-induced *** Ni(OH)2/NF electrocatalyst exhibits stable and efficient electro-chemical HMF oxidation into 2,5-furandicarboxylic acid(FDCA)with HMF conversion close to 100% with high Faraday ***-situ formation strategy results in a compact interface between Ni(OH)_(2) and NF,which contributes to good conductivity and stability during electrochemical *** superior performance benefits from dynamic cyclic evolution of Ni(OH)_(2) to NiOOH,which acts as the reactive species for HMF oxidation to FDCA.A scaled-up device based on a continu-ous-flow electrolytic cell was also established,giving stable operation with a high FDCA production rate of 27 mg h^(-1)cm^(−2).This job offers a straightforward,economical,and scalable design strategy to design efficient and durable catalysts for electrochemical conversion of valuable chemicals.

摘要：针对加工数据采集存在数据量大且干扰信号复杂,导致刀具磨损状态识别方式复杂、识别精度低等问题,提出一种基于快速谱峭度图的集合经验模态分量选取(EEMDFK)与注意力机制的卷积神经网络(ACNN)相结合的识别方法。针对集合经验模态存在选取模态分量困难的情况,引用快速谱峭度图选择策略选取最优分量。通过集合经验模式分解从所采集的不同状况下的刀具振动信号分解出故障信号特征;通过快速谱峭度图选择策略选取内在模函数并进行HHT时频分析,生成时频图;将时频图输入所设计的识别模型进行学习,通过注意力机制提高特征提取效率,并使保存的模型在测试集中对不同刀具磨损状态进行了识别。实验结果表明,该方法对刀具不同状态下的识别率可达99.7%,实现了不同磨损状态下刀具的智能识别,并具有较好的泛化能力和鲁棒性。

摘要：农村饮水安全工程建设得到党和政府高度重视。笔者结合几年来参与农村饮水安全工程规划设计的经验,阐述农村饮水安全工程设计中存在的问题及解决对策,为"十三五"时期农村饮水巩固提升工程做参考。

摘要：针对结构和行驶路况复杂的X06E六轮驱动全地形车,建立了其整车刚体动力学模型,通过对车身进行模态分析,提取了车身柔性体模型,从而建立了X06E六轮驱动全地形车刚-柔耦合系统动力学模型。针对某试验场减速坎实际尺寸建立了相应的路面模型,并以此为输入进行了X06E六轮车瞬态动力学仿真分析,与试验场减速坎路面实际行驶工况采集的车轮垂直力和车身应变进行了对比验证。结果表明:无论是车轮垂向力,还是车身应变,仿真和试验结果趋势和幅值吻合较好,为六轮驱动全地形车动态设计和分析提供了参考。

摘要：电磁感应加热技术作为一种新型非接触式供能技术,可用于化学反应器的加热。该技术有望实现化学品生产工艺从化石能源驱动向电能驱动转型,有效降低化学工业的碳排放。本文对电磁感应加热的二氧化碳加氢甲烷化反应器进行了模型研究,建立了电磁感应加热方式下的COMSOL Multiphysics模型,设计了y=An、y=Bn^(2)、y=Cn^(3)、y=De^(n)、y=E五种缠绕方式,探究了线圈缠绕方式和工艺条件对反应器温度、浓度分布和能耗的影响。研究结果显示,电磁感应加热线圈可在入口段和反应段采取不同的缠绕方式:在入口段,线圈宜紧密缠绕以实现快速升温;而在反应段,线圈应稀疏缠绕以避免反应器出现“热点”。线圈的缠绕方式是优化电磁感应加热反应器性能的关键,有助于避免反应器出现“热点”和失稳,降低反应器的能耗。

摘要：防汛物资是防汛抢险的重要物质条件之一,是盐城市防汛抢险的重要物质基础。防汛抗旱物资管理坚持"定额储备、专业管理、保障急需"的原则,各级防汛机构要高度重视防汛物资的储备与管理工作。盐城市防汛物资具有专业性强、动态特殊性、回收保管等特点,加强防汛物资储备、供应的基础设施建设力度,提高防汛物资快速保障能力,满足防汛物资储备的各项要求,是新形势下防汛抢险供应的需要。

摘要：以大丰区中华水浒园水利风景区为例分析和探讨自然河湖型水利风景区的规划方法。分析结果表明:从风景区的地脉分析、文脉分析及现状情况的分析,确定大丰区中华水浒园水利风景区规划主题与宗旨,探讨在规划过程中如何科学合理地挖掘景区的水文化、创建具有地域特色的水利风景区。

摘要：研究系统属于远程医疗的一个范畴，可用于采集人的脉搏、血压、心电和心音等人体参数，为远程医疗中心提供基本数据。系统采用８０９８单片机作为主机控制电路，首先对人体某些信号进行实时接收，然后把接收到的模拟信号转换成数字信号，输入本地机进行打包，以便实现远程诊断。

摘要：采用瞬态有限元分析方法研究车轮遇到路面冲击时摆臂的结构变形对前轮定位参数瞬时变化的影响,建立了详细的某UTV(全地形车,Utility Terrain Vehicle)整车和共振路面有限元模型。通过计算整车在满载和空载工况下前轮定位参数的瞬时变化,发现摆臂刚度不足使前轮外倾角的负角度偏大,继而针对摆臂进行拓扑优化分析并根据优化结果设计出新的摆臂结构。新摆臂的固有频率和弯曲刚度都有了显著提高,最终使前轮定位参数的变化在合理的范围内。

摘要：The growth plate(GP)is a crucial tissue involved in skeleton development via endochondral ossification(EO).The bone organoid is a potential research model capable of simulating the physiological function,spatial structure,and intercellular communication of native ***,mimicking the EO process remains a key challenge for bone organoid *** simulate this orderly mineralization process,we designed an in vitro sh Ca_(v)3.3 ATDC5-loaded gelatin methacryloyl(Gel MA)hydrogel model and evaluated its bioprintability for future organoid *** this paper,we report the first demonstration that the T-type voltage-dependent calcium channel(T-VDCC)subtype Ca_(v)3.3 is dominantly expressed in chondrocytes and is negatively correlated with the hypertrophic differentiation of chondrocytes during the EO ***,Ca_(v)3.3 knockdown chondrocytes loaded with the Gel MA hydrogel successfully captured the EO process and provide a bioink capable of constructing layered and orderly mineralized GP organoids in the *** results of this study could therefore provide a potential target for regulating the EO process and a novel strategy for simulating it in bone organoids.