摘要：With current resources shortages and environmental destruction,one of the important methods in building energy saving is to develop passive design and technologies. "E-concave",which is one of the entries in the Solar Decathlon 2013,has the core concepts of"Saving",Comfort","Unitization"and"Technology"and brings passive strategies( layout,insulation,daylighting,ventilation,material,etc.) into the design. This article aims to explore the utilization of passive design in solar detached houses through the studies on E-concave and tries to be an example to the development of sustainable buildings in China.

摘要：Transverse pressure gradient(TPG)is one of the key factors influencing the boundary layer airflow diversion in a bump *** paper proposes a novel TPG-based hypersonic bump inlet design *** method consists of two ***,a parametric optimization approach is employed to design a series of 2D inlets with various compression ***,according to the prescribed TPG,the optimized inlets are placed in different osculating planes to generate a 3D bump *** method provides a means to directly control the aerodynamic parameters of the bump rather than the geometric *** performing this method to a hypersonic chin inlet,a long and wide bump surface is formed in the compression wall,which leads to good integration of the bump/*** show that a part of the near-wall boundary layer flow is diverted by the bump,resulting in a slight decrease in the mass flow but a significant improvement in the total pressure *** addition,the starting ability is significantly improved by adding the bump *** reveals that the bump has a 3D rebuilding effect on the large-scale separation bubble of the unstarted ***,a mass flow correction is performed on the designed bump inlet to increase the mass flow to full airflow *** results show that the mass flow rate of the corrected bump inlet reaches up to 0.9993,demonstrating that the correction method is effective.

摘要：随着NEG并网功率不断增大和负荷日益多元化,如何快速协调配网系统源荷功率平衡,实现新能源最大化消纳,已成为亟需解决的问题。为此,首先分析了配网网格特点;其次设计了一种基于配网网格NEG与LF信息的智能终端,给出了其功能、整体构成、供电电源、信息采集与传输方案以及源荷协调策略,以协调网格内源荷功率平衡;最后研制了相关产品,重点做了网格内源荷功率协调测试,并与目前方案进行了对比。结果表明,文中所设计智能终端能够对网格内源荷功率进行可靠协调,实现NEG最大化利用和多方信息共享,推广应用价值高。

摘要：杭州湾作为世界上三大强潮海湾之一,海况极其恶劣,建立ZIHE2D模型进行杭州湾天文潮-风暴潮潮位预报,对桥梁结构设计、施工具有重大意义。依据历年水文监测数据和杭州湾最新冲淤地形,对潮位模型进行修正,并与2018年实测潮位对比分析,保证杭州湾潮位预报准确性。研究结果表明,基于该修正数值模型能够预报杭州湾工程区域不同重现期潮位,得到了100 a一遇高潮位为6.17 m,低潮位为-3.62 m,潮差为9.79 m,为杭州湾海域潮位预报提供了一种有效计算方法,重现期的平均高潮位对桥梁安全和建造成本影响较大,为杭州湾跨海铁路大桥工程基础设计提供参考。

摘要：To discover an efficient route for the shift from an antibacterial fluoroquinolone to an antitumor one based on the mechanistic similarities between targeting topoisomerases and the eukaryotic ones,two series of the title compounds,C3 bis-oxadiazole methylsulfides 6a―6h and corresponding dimethylpiperazinium iodides 7a―7h derived from levofloxacin 1 were designed and *** in vitro antiproliferative activities against Chinese hamster ovary cell line（CHO）,murine leukemia cell line（L1210） and human leukocytoma cell line（HL60） were evaluated by MTT assay,and inhibitory effect on DNA topoisomerase IIα was also measured by means of densitometric assay.

摘要：随着医院病员不断增多及城市用地紧张等各种问题,病房楼高层化成为当今中、大型医院建筑发展的一种趋势。根据作者所参加的实际工程设计的经验,从高层病房楼的建筑特点出发,对高层病房大楼建筑设计中的手术部设计、病房层设计、屋顶停机坪设计等一些问题进行了探讨,并提出了手术部的位置与设备层的关系、手术部双层布置模式与内部流线关系、病房层设计与医辅用房的关系、屋顶停机坪与高层病房楼的关系等设计对策,希望对于今后的高层病房楼建筑设计有所裨益。

摘要：为探究动载作用下天然板岩的断裂韧度,论文采用板岩制作直切槽半圆盘弯曲试样(NSCB),利用直径50 mm分离式霍普金森压杆(SHPB)试验系统进行了动态冲击试验,同时使用高速摄像机记录了其裂纹扩展过程,研究了不同冲击气压和预制裂纹长度下板岩的动态断裂韧度及裂纹扩展速度。结果表明:试件的动态断裂韧度与冲击气压和加载率呈现正相关,而随着预制裂纹长度的增加动态断裂韧度先增加后减小,根据拟合结果,当预制裂纹长度为7.45 mm时试件的动态断裂韧度达到最大值,0.2、0.3和0.4 MPa三种冲击气压下对应的动态断裂韧度最大值分别为2.99、3.57和4.14 GPa·m^(1/2);试件的破坏过程可以分为动态损伤、裂纹孕育、裂纹形成、裂纹扩展和试件断裂五个阶段;试件主裂纹的扩展速度波动较大,而预制裂纹长度对试件裂纹扩展速度的影响较小。研究揭示了不同工况下板岩试件动态断裂行为的差异,对该类岩性地下工程支护、爆破参数设计具有一定的参考意义。

摘要：为进一步实现在移动设备上对驾驶员吸烟的违法行为实时检测,提出一种改进的SlimYOLOv7-tiny模型。使用DSConv替换YOLOv7-tiny特征融合网络中标准3×3卷积,增加P6检测层,采用Mish激活函数,引入边框回归损失函数EIoU loss,利用Slim剪枝算法进一步提高模型的轻量化,使用PyQt5开发图形界面程序。实验结果表明,模型在自建驾驶员吸烟数据集上与原模型相比参数量减少60.0%,计算量减小64.39%,有利于模型进一步在移动设备及嵌入式设备上的实时性检测。

摘要：According to the problems of short life and low strength of TiB2 coating cathode for current technology in aluminium electrolysis industry,this work synthesized TiB2-TiB/Ti gradient composite with TiB2 coating and TiB whiskers in metallic Ti matrix by a electrolytic boronizing method based on similar density and thermal expansivity of the three *** phase composition and morphology of the cross-section were determined by X-ray diffraction(XRD),scanning electronic microscope(SEM)and X-ray energy dispersive spectrum(EDS).The results show that uniform TiB2 layer with a thickness of 8-10μm is continuously coated on the surface while the TiB whisker connected with TiB2 layer was embedded dispersedly into the *** TiB crystal whisker has a maximum length of about 220μ*** growth rate of TiB2 and TiB is enhanced by the strong reduction of *** novel gradient design of the composite helps to extend life and improve strength of the TiB2 cathode in aluminium electrolysis.

摘要：在独柱桥墩的抗震设计中,为了实现投资与效益之间的平衡,并在追求最优解的同时显著提高其计算效率,结合模糊逻辑控制法、神经网络法、自适应遗传算法的优点,提出了一种可以考虑非线性的基于性能的独柱桥墩的抗震设计方法。对设计结果进行Pushover分析,其能力曲线与试验滞回环曲线骨架基本一致;将该设计流程应用于一座城市高架桥桥墩的抗震设计中。结果表明:与一般的基于性能的模糊遗传抗震设计方法相比,该方法可以方便、准确、高效地确定桥墩的最优设计模型,可以推广应用于桥梁工程的抗震设计中。