摘要：The development of cost-effective and highperformance electrocatalysts has been increasingly studied to mitigate upcoming energy and environmental *** and heterointerface engineering have played significant roles in the rational design of electrocatalysts and modulation of their electrocatalytic ***,the synergistic effect between amorphization and heterointerfaces has been scarcely *** a proof-of-concept attempt,we develop amorphous FeMo(a-FeMo)electrocatalysts with an abundance of heterointerfaces that are composed of amorphous components and evaluate their electrocatalytic performances toward the nitrogen reduction reaction and oxygen evolution reaction(OER).Benefitting from the synergistic effect between the amorphous nature of the a-FeMo electrocatalysts,which offer a high density of active sites,and significant electron redistribution at the heterointerfaces,the electrocatalysts exhibit a high Faradaic efficiency of 29.15%,an elevated yield rate of 71.78μg_(NH_(3)) mg_(cat.)^(-1) h^(-1) with long-term stability at a potential of-0.1V *** hydrogen electrode and excellent electrocatalytic activity toward the *** study provides a promising and effective method for the rational design of low-cost heterogeneous catalysts with desirable efficiency,selectivity,and stability.

摘要：Stacking nanoscale-building blocks into onedimensional(1D)assemblies with collective physical properties is a frontier in designing ***,the formation of 1D arrays using weak magnetic fields and an in-depth understanding of their magnetic properties remain ***,low-dimensional assemblies of iron oxide nanocubes with a disordered arrangement are fabricated at the diethylene-glycol/air interface in the presence of assembly fields(0/1/3/5/30/50 mT).Ring-shaped assemblies gradually transform as the assembly field increases from 0 to 50 mT,first to a porous network consisting of elongated assemblies and then to an aligned array of filaments,in which the aligned filaments are formed when the assembly field is≥3 mT and duration t>14 ***-glass characteristics and static(dynamic)anisotropy factors~2(3)are achieved by tuning the strength of the assembly *** the presence of a relatively weak assembly field,the interplay between dipolar interactions and disorder with respect to magnetic easy axis alignment leads to spin-glass *** alignment of the magnetic easy axes and the strength of the dipolar interactions increase with increasing assembly field,resulting in the disappearance of spin-glass characteristics and enhancement of the magnetic *** study presents a strategy for obtaining magnetic assemblies with spin-glass behavior and controllable anisotropy while shedding light on the magnetic interactions of low-dimensional assemblies.

摘要：The exchange bias is of technological significance in magnetic recording and spintronic *** a large bias field is a long-term goal for the research field of magnetic shape memory *** this work,a large bias field of 0.53 T is achieved in the Ni50Mn34In16-xFex(x=1,3,5)system by tuning the magnetic ground state(determined by the composition x)and the magnetic-field history(determined by the magnetic field HFCduring field cooling and the maximum field HMaxduring isothermal magnetization).The maximum volume fraction of the interfaces between the ferromagnetic clusters and antiferromagnetic matrix and the strong interfacial interaction are achieved by tuning the magnetic ground state and the magnetic-field history,which results in strong magnetic unidirectional anisotropy and the large exchange ***,two guidelines were proposed to obtain the large bias ***,the composition with a magnetic ground state consisting of the dilute spin glass and the strong antiferromagnetic matrix is preferred to obtain a large bias field;secondly,tuning the magnetic-field history by enhancing HFCand reducing HMaxis beneficial to achieving large exchange *** work provides an effective way for designing magnetically inhomogeneous compounds with large exchange bias.

摘要：为优化电动汽车充电电池的供电性能,研究电动汽车充电站动力电池并联重组供电均衡性。通过串并联转换方式对动力电池完成并联重组。并在并联重组的电池上安装供电均衡性控制器,确定控制运行周期、导通占空比等作为均衡控制参数,进而实现对并联重组动力电池的供电均衡性控制。通过应用实验可得出结论:所提方法应用下,电动汽车充电站动力电池的供电电压的时序均衡指标、空间均衡度指标、放电量偏差和负载标准差均满足应用要求,由此证明设计方法控制效果较好。

摘要：为了挖掘西禅寺景观空间造景手法,借助景观图式语言,从景观要素和结构角度对西禅寺进行研究,得出结论:西禅寺的景观图式语汇有“字”4大类要素,共60种图式;“词”5大类要素,共23种图式;“词组”8大类要素,共15种图式。西禅寺的景观设计句法有单一句法和复杂句法。西禅寺的景观设计语法表现在尺度、秩序、修辞和本土性等方面,最终构建福州西禅寺景观图式语言体系。

摘要：为控制城市建成区雨天合流制溢流(CSOs)污染对河道水环境的冲击,黄孝河水环境综合治理项目采用25×10^(4)m^(3)的调蓄池和设计处理峰值水量6 m^(3)/s的强化处理设施(即污泥回流型高效沉淀池工艺)对明渠上游暗涵雨天CSOs污水进行储存及处理。高效沉淀池设计出水水质为SS≤20 mg/L、TP≤1 mg/L、COD≤100 mg/L,结合精密过滤池,可将SS进一步降低至10 mg/L。通过对高效沉淀池的工艺以及启动方式的优化设计,可使空池启动时间降低至12 min,同时采用污水内循环系统可减少启动过程产生的不达标出水10800 m^(3)。按照最大进水污染负荷测算,工程运行费用为0.29元/m^(3)。

摘要：月球探测是中国的战略性项目,其最后一步也是最关键的一步就是月球科考站的建设。为了能给月球科考站的建设提供一些经验,针对月球科考站的建设问题,提出了一种刚柔耦合的充气式展开的月球科考站构型设计方案,并介绍了各层的设计用途及其功能。采用有限元软件ABAQUS进行仿真分析,研究了提出的科考站构型在月面上无月震影响下的静载工况,以及有月震影响下的动载工况的工作情况。结果表明:所提出的科考站各层结构在这两种工况下都能维持较好的力学性能,说明所提出的科考站构型具有较好的可行性,可以为相关领域的工程设计提供一些参考。

摘要：由于多个无线射频识别(RFID)标签同时与阅读器通信易发生冲突,通信效率较低,因此标签防冲突是RFID通信系统的一个重要问题。对此,提出一种PCA降维与一维投影结合的聚类方法,解决标签冲突。通过PCA降维找到最大化投影方向进行投影,采用蒙特卡洛方法快速找到峰值作为聚类中心,完成信号分离。仿真数据中,不同信道衰落系数下,该方法都能在20 dB后成功解码,分离效率达到100%;实测数据中,该方法的时间复杂度低于传统算法,吞吐量达到0.55。

摘要：由于具有增强疗效、降低剂量、减少不良反应和降低耐药性以及满足复杂疾病的治疗需要等优势,联合用药逐渐成为临床治疗的新趋势,但复杂的给药方案加重了患者的负担,导致患者依从性差,且多种药物之间的相互作用也使患者受到的风险增加。这种情况下,将多个活性成分以一定比例组合在同一剂型中的固定复方制剂成为新药研发的新方向。本文主要总结了固定复方制剂的一些常见剂型,如单片、多层片、包衣片、多颗粒系统的设计策略。同时总结了3D打印技术在固定复方制剂开发中的研究概况。

摘要：目的分析职业人群的工作环境噪声感知与心血管疾病(CVD)、抑郁症状及其共病的关系,为身心疾病的防控提供科学依据。方法采用横断面调查研究设计,来自2021年10-12月四川省、贵州省28个地级市和重庆市33个区(县)中国铁路成都局集团有限公司的西南职业人群队列基线数据,通过问卷调查获取工作环境噪声感知、抑郁症状和CVD史等情况,并采用潜在剖面分析模型确定噪声感知类型,采用多分类logistic回归分析探讨不同噪声感知类型与CVD、抑郁症状及其共病的关系。结果共纳入30509名研究对象,年龄为(36.6±10.5)岁,82.0%为男性。工作环境噪声直接感受、心理影响、听力/睡眠影响程度的增加均会升高单纯CVD、单纯抑郁症状及其共病的患病风险。采用潜在剖面分析,将噪声感知分为低、中、高和极高水平。与低水平噪声感知相比,噪声感知水平越高,与单纯CVD、单纯抑郁症状和CVD合并抑郁症状的关联越强,其中极高水平噪声感知与低水平相比,单纯CVD、单纯抑郁症状、CVD合并抑郁症状人群的患病风险分别增加了2.14(95%CI:1.73~2.65)倍、8.80(95%CI:7.91~9.78)倍、17.02(95%CI:12.78~22.66)倍。结论不同噪声感知类型与CVD和抑郁症状有关,对CVD合并抑郁症状危害更大。应降低职业人群工作环境噪声强度,减少患身心疾病的风险。