摘要：针对佛山市某超深圆形工作井围护结构设计问题,结合地层特点采用数值模拟及现场实测手段对原设计方案进行分析.对围护结构厚度及嵌固深度进行优化分析,探讨相同条件下基坑稳定性随着围护结构厚度及嵌固深度的变化规律.结果表明:开挖面入岩的超深圆形基坑自稳性好,从经济角度考虑,围护结构嵌岩不宜深;足够刚度的内衬墙基础上,较薄的地连墙嵌固很浅也可检算通过,且有较大安全富余,可为相关工程提供参考.

摘要：自20世纪末以来,La-Co共替代的M型铁氧体备受关注,已成为高性能永磁铁氧体的基础材料.Co2+的未淬灭轨道矩被认为是增强铁氧体单轴各向异性的原因,但其微观作用机理尚未完全解释清楚.为了满足铁氧体材料日益增长的性能需求,理解其磁各向异性增强机理至关重要,并寻求从根源上的提升、低成本和高效的方法,以制定开发高性能产品的指导原则.本文综述了一系列研究工作,旨在确定Co离子在晶格中的取代位置,这是增强磁各向异性的关键.这些研究为进一步提高永磁铁氧体的磁性能提供了重要的材料设计参考.

摘要：针对成渝中线工程特点和建造、装备、运营等领域智能化需求,结合当前数字化智能化技术的发展,遵循智能高铁2.0科技攻关任务的整体布局,提出智能高铁2.0成渝中线示范应用的整体目标,构建“3大板块、10大领域、20个方向、主要创新和1个平台”的智能高铁2.0成渝中线技术体系框架,规划智能高铁2.0成渝中线示范的28项关键任务,并结合业务需求、技术成熟度、实施效果等多方面因素,提出2阶段实施路径,可为智能高铁2.0成渝中线示范提供顶层设计指导。

摘要：In this paper, we present a swarm intelligence design technology based on a workshop of meta-synthetic engineering, including the architecture, the decision-making process of swarm intelligence design based on a meta-synthetic workshop, and the design resource delivery technology involved in the design. We conclude the paper with a discussion of future research.

摘要：为了研究生物胶-纤维固化土护坡材料在三维受力下的剪切强度特性,以瓜尔豆胶为胶凝材料,以聚丙烯纤维为增韧筋材,在控制胶-筋配比条件下对黄土开展了一系列三轴压缩试验,分析了应力-应变曲线特征,抗剪强度参数变化规律以及主要破坏形式,并讨论了瓜尔豆胶、聚丙烯纤维对黄土的协同固化机理。试验结果表明:瓜尔豆胶能有效提升小应变时的偏应力值,聚丙烯纤维能有效改变应力-应变曲线形状,当两者同时加入黄土时,不同围压下的应力-应变曲线均表现为持续硬化型,具有良好的破坏韧性及较高的偏应力值,且不受应变大小的影响;瓜尔豆胶和聚丙烯纤维混合有利于提高土体的抗剪强度,随着生物胶含量或纤维含量增加,抗剪强度先增大后减小或逐渐增大,当瓜尔豆胶含量为1.0%,聚丙烯纤维含量为0.5%时,固化黄土的抗剪强度达到最优,相较于素黄土,黏聚力提升了230.6%,内摩擦角提升了24.8%;瓜尔豆胶-聚丙烯纤维搭配可有效抑制土体的侧向变形,最优胶-筋配比下的土样破坏形态为轻微的鼓胀破坏。在瓜尔豆胶的凝胶作用、聚丙烯纤维的拉筋作用及其互促作用的协同下,土体的三轴剪切特性得到全面提升,可为路基边坡防护工程设计参数的选取提供重要的理论依据。

摘要：针对材料化学综合实验本科教学,以学生掌握吸水性水凝胶的制备、表征和性能测定方法为目的,以安全、实验历程适合课堂教学为原则,以羧甲基纤维素钠、丙烯酰胺和N,N-亚甲基双丙烯酰胺为主要原料,采用自由基接枝聚合的方法,制备了尿素缓释凝胶。利过傅里叶变换红外光谱对水凝胶的化学结构进行了表征,采用淋溶法测定了尿素缓释凝胶的缓释性能。该实验安全性高,易实施,操作难度适中,为材料化学相关本科实验教学提供参考。

摘要：随着商品混凝土的大量应用,高层建筑对高强混凝土的需求越来越多,强度等级也越来越高,C80高强混凝土的应用也逐渐增多。配合比设计是实现C80高强混凝土的一个重要过程。本文阐述了C80高强混凝土配合比设计的方法,并提出了在配制、使用、运输C80高强混凝土质量控制的注意事项。

摘要：文章从预制菜生产经营的全过程中找到预制菜人才培养的切入点、结合点和落脚点,对预制菜人才培养的专业进行设计,并对高职烹饪类专业如何衔接培养预制菜人才的关键点进行设计,希冀为餐饮院校培养预制菜人才制定培养方案提供参考。

摘要：Urban stormwater runoff nearly discharges directly into bodies of water through gray infrastructure in China, such as sewers, impermeable ditches, and pump stations. As urban flooding, water shortage, and other environment problems become serious, integrated water environment management is becoming increasingly complex and challenging. At more than 200 ha, the Oriental Sun City community is a large retirement community located in the eastern side of Beijing. During the beginning of its construction, the project faced a series of serious water environment crises such as eutrophication, flood risk, water shortage, and high maintenance costs. To address these issues, an integral storrnwater management master plan was developed based on the concept of low impact development （liD）. A large number of liD and green stormwater infrastructure （GSI） approaches were designed and applied in the community to replace traditional stormwater drainage systems completely. These approaches mainly included bioretention （which captured nearly 85th percentile volume of the annual runoff in the site, nearly 5.4 x 10^5 m3 annually）, swales （which functioned as a substitute for traditional stormwater pipes）, waterscapes, and stormwater wetlands. Finally, a stormwater system plan was proposed by integrating with the gray water system, landscape planning, an architectural master plan, and related consultations that supported the entire construction period. After more than 10 years of planning, designing, construction, and operation, Oriental Sun City has become one of the earliest modem large-scale liD communities in China. Moreover, the project not only addressed the crisis efficiently and effectively, but also yielded economic and ecological benefits.

摘要：目的:使用多重位点特异性聚合酶链式反应(PCR)的方法,简单高效地鉴定地骨皮(Lycii Cortex)的2种基原植物枸杞(Lycium chinense)和宁夏枸杞(***)。方法:在使用植物叶绿体基因组数据库(CGIR)获取枸杞和宁夏枸杞叶绿体基因组序列的基础上,利用IdenDSS软件筛选出两基原间特定的单核苷酸多态性(SNP)位点,并利用Primer 5.0软件设计获得特异性鉴别引物,包括鉴别枸杞的引物GQ-F/R、鉴别宁夏枸杞的引物NX-F/R。对引物浓度比、退火温度、循环次数、Taq酶进行优化,形成最适的PCR鉴别体系和条件,并对采集自不同地区的地骨皮进行适用性考察。结果:对影响PCR结果的各个条件进行考察优化后,最终确定枸杞和宁夏枸杞的引物浓度比为2∶1、退火温度为59℃、循环次数为30次时,来自不同产区地骨皮的2个基原枸杞和宁夏枸杞分别在183、295 bp的位置出现特异性鉴别条带。结论:通过一次PCR即可方便、快捷、高效地鉴定地骨皮的基原,为枸杞和宁夏枸杞的专属性鉴别提供新方法,同时对含有地骨皮成分的经典名方的研发提供一定的技术支撑。