摘要：An effective cancer nanodrug not only needs to load a large fraction of pharmaceutical molecules and release them in responsive ways, to function as imaging and photothermal agents, but also needs to possess the favorable morphologies that are favored by the EPR effect of cancer tissues. In this study, we designed a spherical nanodrug by forming clusters using DOX and a polymer-engineered rGO. These spherical nanodrugs had a diameter of around 750 nm and assumed both functionalities of chemical therapy and the photothermal effect. In addition, this nanodrug featured a high-loading capability of DOX, a pH-responsive release profile, a self-fluorescent capability, and an effective accumulation in cancer cells. The layer-by-layer assembly of three cycles of polyethylene glycol (PEG) and polyacrylic acid (PAA) around the rGO core was indispensable in achieving a chemically-modified rGO precursor that assembled with DOX to produce the spherical nanodrug. The spherical nanodrug effectively decreased cell viability upon NIR irradiations.

摘要：Piezocatalytic hydrogen evolution has emerged as a promising direction for the collection and utilization of mechanical energy and the efficient generation of sustainable energy throughout the *** CdS,as an established semiconductor photocatalyst,has been widely investigated for splitting water into H_(2),while its piezocatalytic performance has attracted less attention,and the relationship between the structure and piezocatalytic activity remains ***,two types of CdS nanostructures,namely CdS nanorods and CdS nanospheres,were prepared to probe the above‐mentioned *** ultrasonic vibration,the CdS nanorods afforded a superior piezocatalytic H_(2) evolution rate of 157μmol g^(−1)h^(−1)in the absence of any co‐catalyst,which is nearly 2.8 times that of the CdS *** higher piezocatalytic activity of the CdS nanorods is derived from their larger piezoelectric coefficient and stronger mechanical energy harvesting capability,affording a greater piezoelectric potential and more efficient separation and transfer of intrinsic charge carriers,as elucidated through piezoelectric response force microscopy,finite element method,and piezoelectrochemical *** study provides a new concept for the design of efficient piezocatalytic materials for converting mechanical energy into sustainable energy via microstructure regulation.

摘要：老旧建筑的敞开式凸阳台火灾风险高,且易引起火灾竖向蔓延。为提高其消防安全性,调研分析了阳台的火灾荷载,采用PyroSim软件对敞开式凸阳台发生火灾的场景进行模拟,获取并分析了阳台火溢流特征,以及室内、室外和上层阳台的温度分布情况。结果表明:阳台溢流火焰能够超出上层阳台围栏1.2 m,使上层阳台楼板处温度达到800℃左右。提出利用住宅供水管道构建简易水喷淋灭火装置和合理设置防火挑檐的防灭火设计方案,并通过模拟仿真得到喷头能够在启动后11 s扑灭火灾,出挑宽度为1 m的防火挑檐能够保证上层阳台内的温度不高于60℃。

摘要：一埃利亚松与'道隐无名'2018年3月25日,奥拉维尔·埃利亚松(Olafur Eliasson,1967—)在北京红砖美术馆举办了迄今为止最大规模的个展'奥拉维尔·埃利亚松:道隐无名'(Olafur Eliasson:The Unspeakable Openness of Things,这是继2016年上海龙美术馆'无相万象'(Nothingness is Not Nothing At All)后.

摘要：伊朗钢琴音乐是西方音乐文化与伊朗传统音乐文化相碰撞而产生的音乐样本,也是钢琴全球化与民族化在伊朗的产物。伊朗钢琴的即兴演奏和即兴演奏教学模式体现着伊朗传统音乐思维和审美特征,即伊朗钢琴呈现出伊朗传统音乐的旋律展开方式和伊朗传统器乐的音色与情感。对中国钢琴音乐而言,该演奏形式和教学模式可以激活中国钢琴演奏者的创作能力,也可推进中国钢琴音乐的民族化进程。

摘要：针对传统送料装车系统的不足,分析了一种基于PLC的自动送料装车系统,介绍了该控制系统的工艺流程、系统结构和上位机接口功能,以满足系统控制的可靠性、稳定性需求。

摘要：不同光源因光谱功率分布差异,具有不同色温、显色指数,测色差异很大。D65标准光源最接近日光光色,是国际照明委员会(CIE)推荐测色标准光源。但其价格昂贵、工作条件苛刻且不易得,实际测色中常用非标准光源代替。为了研究非标准光源的测色差异,设计了一套溶液比色系统,分别采用高压脉冲氙灯、LED灯、卤钨灯作为光源,亚硝酸盐显色实验为基础,以色度学原理计算3种光源的测色差异。结果显示,氙灯、LED灯光谱分布较为均匀,色度坐标接近等能白光E(0.33,0.33),测色比较接近真实颜色,而卤钨灯测色误差较大。氙灯与LED灯在L~*a~*b~*空间测色平均色差ΔE_(ab)在10NBS以内,两者与卤钨灯测色平均色差ΔE_(ab)在20NBS以上。

摘要：通过对当前省级广播电视单位招聘现状调研,省级广播电视单位主要是通过线下招聘或者以第三方招聘平台辅助完成招聘工作,省级广播电视单位分支结构众多,各地统一招聘管理困难。为解决此类问题,推动数字赋能广播电视发展,拓展广播电视产品矩阵,进一步完善数字化招聘管理。分析广播电视单位招聘管理需求,运用*** 3.0、SpringBoot和MongoDB等开发工具和技术,研究并设计一种数字化招聘系统,实现广播电视单位数字化招聘系统从前端到后端的开发部署和运行,为考生和人力资源管理者提供便捷、灵活、高效的网络平台。

摘要：古树名木承载了时间印记和历史变迁,因此,古树名木的地理信息采集工作十分重要。本文提出了古树名木相关信息采集的技术方法,详细描述了古树名木冠幅测量、空间位置测量和胸围测量的具体采集要求,深入研究了古树名木信息采集涉及的测量技术;基于古树名木调查数据处理软件,对采集的数据进行处理、生产和入库,并与已有数据进行融合更新,形成了专题数据,完成了古树名木调查数据库设计。另外,本文还结合珠海市古树名木地理信息采集项目,将该技术运用在具体项目中,为古树名木数据的采集和管理保护提供技术支撑。

摘要：本文首先概述了苯并噁嗪树脂在耐热性、韧性、阻燃性、介电性能等方面的改性进展,然后重点阐述了苯并噁嗪树脂在预浸料、RTM、拉挤成型等复合材料成型工艺中的应用进展,介绍了苯并噁嗪树脂基复合材料在航空航天、电子电器和交通运输领域的应用。最后,展望了苯并噁嗪树脂在复合材料领域的发展趋势。