摘要：With the development of economy, the adjustment of industrial structure, the improvement of people＇s living standard and the expansion of urbanization, the structure of the city has changed a lot. The proportion of industrial use of electricity decreased year by year, the proportion of household electricity, commercial electricity and public utilities increased year by year, the peak and valley change increased year by year. Therefore, the construction of hydropower project, to improve the current situation of the system of regulating the power grid, has a positive role in promoting. Reinforced rock fill dam with face slab in foreign countries has been built and at the dam more than 50m high dam more than 70 seats, of which more than 100m high dam 18. At present, Brazil estuary aliya rock fill dam is the highest dam in this kind of dam in the world, built in 1980, has been running well. Our reinforced rock fill dam with face slab design and construction technology in the introduction of digestion and absorption of foreign advanced experience in the foundation, the systemic research on a considerable scale. The design level and construction technology of the rock fill dam with face slab in our country have reached the international advanced level by the complete technology of the construction of the 100m level rock fill dam with face slab. This paper mainly from the rock fill dam with face slab, dam type selection and layout of water conservancy project comparison; dam profile design; detail dam; dam high determined; stability analysis; strength calculation; overflow capacity check aspects were studied.

摘要：高压问题在工业企业中是常见问题,它非常重要,因为它极大的影响到相关人员的安全问题。压力缓冲技术是关于压力变化规律的科学,它能够指导我们处理高压工作和出现的相关问题。压力缓冲技术在工业企业中具有举足轻重的作用。本文以常见的压力缓冲方法为对象,从数学的角度深入分析了压力缓冲的实现原理,从本质上对压力缓冲技术进行了研究。对于压力缓冲设备的设计、选择和操作等各个环节都有一定的指导意义。本文还针对生产实际提出了一些建议,能够在压力缓冲和相关问题处理中有所帮助。

摘要：随着电力电子、计算机在输配电领域的广泛应用,各种保护控制装置的硬件、软件设计越来越复杂。近年来随着电力物联网的大规模建设,这些装置呈现保护、测量、操控、数据传输、边缘计算等多功能为一体的集成化趋势,同时也为这些装置的电磁兼容能力、可靠性设计带来了更大的挑战。

摘要：为解决人们洗浴中的搓背难题,设计了一种自动搓背装置并开发了基于专家系统的控制算法。根据数据库中洗浴者的特征参数和实测压力,运用专家知识,专家系统的推理机对搓背速度进行推理决策,并控制执行机构以兼顾搓背效率和洗浴舒适的运动速度进行搓背。在样机上进行了试验,结果表明所设计的装置及其控制策略可实现多种搓洗速度,为不同的洗浴者提供个性化的搓背方案。

摘要：介绍了一种多功能便携式磁粉探伤仪,其探头的矽钢片骨架、铁芯和磁头均采用可拆卸的铰链连接方式,铁芯和磁头的位置均独立可调,也可以拆掉,这种探头可作为多种形式使用,提高了探头的通用性。论文详细介绍了磁化线圈供电电路,当作为磁轭式探头使用时,可以将两个工作变压器并联,为线圈供电,提高探伤的灵敏度。仪器还设计有基于LM3402的高亮度LED照明电路,方便在黑暗环境中照明和观察磁痕。使用时可根据需要调节探头和磁化电流,满足不同的探伤要求。试验和实际应用表明,该设备能够满足磁粉探伤规范要求,保证检查结果的可靠性。

摘要：Objective To develop RT-nPCR assays for amplifying partial and complete VP1 genes of human enteroviruses(HEVs)from clinical samples and to contribute to etiological surveillance of HEV-related *** A panel of RT-nPCR assays,consisting of published combined primer pairs for VP1 genes of HEV A–C and in-house designed primers for HEV-D,was established in this *** sensitivity of each RT-nPCR assay was evaluated with serially diluted virus stocks of five serotypes expressed as CCID50 perμL and copies perμL,and the newly established methods were tested in clinical specimens collected in recent *** The sensitivity of RT-nPCR assays for amplifying partial VP1 gene of HEVs was 0.1 CCID50 perμL and 10 virus copies perμL,and for the complete VP1 gene was 1 CCID50 perμL and 100 virus copies perμL,using serially-diluted virus stocks of five *** a proof-of-concept,25 serotypes were identified and complete VP1 sequences of 23 serotypes were obtained by this system among 858 clinical specimens positive for HEVs during the past eight surveillance *** This RT-nPCR system is capable of amplifying the partial and complete VP1 gene of HEV A–D,providing rapid,sensitive,and reliable options for molecular typing and molecular epidemiology of HEVs in clinical specimens.

摘要：Cryptocurrencies represented by Bitcoin have fully demonstrated their advantages and great potential in payment and monetary systems during the last *** mining pool,which is considered the source of Bitcoin,is the cornerstone of market *** surveillance of the mining pool can help regulators effectively assess the overall health of Bitcoin and ***,the anonymity of mining-pool miners and the difficulty of analyzing large numbers of transactions limit in-depth *** is also a challenge to achieve intuitive and comprehensive monitoring of multi-source heterogeneous *** this study,we present SuPoolVisor,an interactive visual analytics system that supports surveillance of the mining pool and de-anonymization by visual *** is divided into pool level and address *** the pool level,we use a sorted stream graph to illustrate the evolution of computing power of pools over time,and glyphs are designed in two other views to demonstrate the influence scope of the mining pool and the migration of pool *** the address level,we use a force-directed graph and a massive sequence view to present the dynamic address network in the mining ***,these two views,together with the Radviz view,support an iterative visual reasoning process for de-anonymization of pool members and provide interactions for cross-view analysis and identity *** and usability of SuPoolVisor are demonstrated using three cases,in which we cooperate closely with experts in this field.

摘要：目的纳米科技作为21世纪最重要的科技产业革命之一,其研究成果被广泛应用于各个领域,给人们的生活带来巨变。在纳米科技飞速发展的今天,艺术似乎也正在迈入一个崭新的时期,科学与艺术的交融与碰撞使得它们在各自的领域里不断的创新与突破。有理由相信,以纳米科技之壤滋养艺术之苗,将会结出丰硕的果实。方法主要以基于纳米光刻技术和碳纳米管生长技术的微观图案设计创作实践为例,探索利用纳米技术来进行图案设计创作的可能性,并进一步探讨了这种"捉光代笔"的创作方式的意义与价值。结论将纳米技术视作全新的图案设计创作方式,运用崭新的创作思维去表现更加广阔的主题与情感,利用科学的新技术、新材料来实现艺术自身的创新与当代发展。

摘要：为明确连接刚度对调频型颗粒阻尼器(Tuned Particle Damper,TPD)减震控制效果的影响,确定实际可用的较优的阻尼器连接刚度范围,设计制作了某钢筋混凝土框架结构1∶30缩尺试验模型及可用于该试验模型的调频型颗粒阻尼器,设计了不同的TPD连接刚度,通过系列振动台试验研究了连接刚度对该型阻尼器减震控制效果的影响。结果表明:合理设计的TPD能有效降低地震荷载作用下结构的位移响应;TPD与受控结构的连接刚度对TPD减震控制效果影响显著,TPD自振频率与结构控制方向基频之比在0.90~1.10内,TPD减震效果较优。

摘要：常导中低速磁浮列车采用被动导向控制,其悬浮电磁铁同时提供列车悬浮力和导向力。因此,在磁浮列车的设计中,对悬浮电磁铁磁场的分析非常重要。本文采用Ansoft有限元分析软件对中低速磁浮列车悬浮电磁铁电磁场进行了三维研究,并与二维计算进行了比较。计算结果表明,在电磁铁电流较小情况下,铁心和轨道发生饱和的局部区域较小,三维与二维计算结果接近;但当电磁铁电流较大时,两者计算结果相差较大,三维计算得到的悬浮电磁力值更接近实验值。