摘要：Nanocarbon as an eco-friendly and abundant material has strong multi-color fluorescence, which makes it a promising candidate for healthy lighting and display. However, the low fluorescence efficiency and poor stability of multi-color carbon nanoparticle（CNP） phosphors are main hurdles that hinder their applications. This work demonstrated efficient and stable multi-color CNP phosphors through synergy between inner polar groups and outer silica matrix. The polar groups in polyethylene glycol（PEG） 6,000 are favor of high fluorescence of the CNP phosphors, and the low melting point（64℃） of PEG 6,000 helps to improve the thermal stability of the phosphors, while the silica matrix provides protection to the phosphors. Based on this design,blue, green, yellow and red CNP phosphors with photoluminescence quantum yield of 53.1%, 47.4%, 43.8% and 42.3% have been achieved, all of which are the best values in ever reported multi-color CNP phosphors. Furthermore, the fluorescence of the CNP phosphors keeps almost unchanged at 100℃ and degrades little in one month, indicating their good thermal tolerance and temporal stability. In addition, multicolor devices including white light-emitting devices（LEDs）have been realized by coating the CNP phosphors onto UV chips. The luminous efficiency, correlated color temperature,Commission Internationale de L＇Eclairage and color rendering index of the white LED can reach 12 lm W^-1, 6,107 K,（0.32, 0.33） and 89, respectively, indicating the potential applications of the CNP phosphors in lighting and display.

摘要：锻锤锤头速度检测是实现精确能量打击的重要基础。针对锻压现场工作环境恶劣,现有传感器很难长期可靠的检测锻锤锤头速度的问题,提出了一种锻锤锤头速度的软测量方案。在此过程中,分析了全液压锻锤打击过程中的系统特性,建立了打击时刻的锤头速度软测量模型,并基于非线性最小二乘法对模型中不易确定的参数进行了辨识,最后应用Simulink对所建模型进行了仿真分析。仿真结果表明,经过参数辨识后的模型能够快速、准确的测量出当前工作情况下的锤头速度,模型精度比较高。

摘要：随着现在企业服务器和网络设备数量的增加,对这些设备的管理和维护提出了更高的要求。网络监控系统是为了能快速及时的定位网络问题和提高网站性能。当今,在企业中比较常用的网络监控系统有nagios,cacti等。本文针对现有网络监控系统的不足,提出了一个解决方案和基本实现。本系统结合nagios给出试验结果。

摘要：本管网工程为某水泥厂（Φ4.3m×60m回转窑）系统工程的一个子项工程,管线长10km,且处于云贵高原山区,根据设计图纸和现场勘查情况、施工说明和工程预算,可以确定该工程的施工要求较高,时间紧,任务重。

摘要：Advanced geological prediction is a crucial means to ensure safety and efficiency in tunnel ***,diff erent advanced geological forecasting methods have their own limitations,resulting in poor detection *** multiple methods to carry out a comprehensive evaluation can eff ectively improve the accuracy of advanced geological prediction *** this study,geological information is combined with the detection results of geophysical methods,including transient electromagnetic,induced polarization,and tunnel seismic prediction,to establish a comprehensive analysis method of adverse ***,the possible main adverse geological problems are determined according to the geological ***,various physical parameters of the rock mass in front of the tunnel face can then be derived on the basis of multisource geophysical ***,based on the analysis results of geological information,the multisource data fusion algorithm is used to determine the type,location,and scale of adverse *** advanced geological prediction results that can provide eff ective guidance for tunnel construction can then be obtained.

摘要：制备有机硅-丙烯酸丁酯-醋酸乙烯酯三元共聚乳液。研究了有机硅、丙烯酸丁酯、醋酸乙烯酯、乳化剂含量、乳化剂配比、引发剂含量、保护胶体对乳液聚合和性能的影响,并确定了它们的最适宜条件。结果表明该共聚乳液具有良好的耐水、耐侯、耐酸碱、耐污染和稳定性能。该三元共聚醋丙乳液能良好应用于制备普及型内墙建筑涂料。

摘要：中国巡天空间望远镜(Chinese Survey Space Telescope,CSST)预计对系外行星开展大气观测研究,这为系外行星观测领域提供了新的机遇.目前主要通过凌星透射谱来研究系外行星大气.然而,实际观测数据中已经发现恒星活动存在的迹象,且结果表明难以准确约束恒星活动污染.所以,如何准确区分并剔除恒星活动污染是透射光谱学的一个重大挑战.因此,在选择透射谱观测目标进行跟进观测时,需要对潜在的恒星污染及其可区分性进行定量评估,这需要大规模的仿真来提供预期数据.利用多色测光法结合机器学习来判别系外气态行星大气透射谱中是否存在潜在的恒星污染,针对CSST的多通道相机(Multi-Channel Imager,MCI)设计能准确预判透射谱是否存在恒星污染的滤光片观测组合,可为后续系外行星大气观测目标的策略制定提供一定的参考.

摘要：The separator is a key component of sodium-ion battery,which greatly affects the electrochemical performances and safety characteristics of the *** glass fiber separator cannot meet the requirements of large-scale application because of high cost and poor mechanical ***,the novel composite separators are prepared by a simple slurry sieving process using glass fiber separator scraps and ordinary qualitative filter paper as raw *** the composite mass ratio is 1:1,the composite separator has excellent comprehensive properties,including tensile strength of 15.8 MPa,porosity of 74.3%,ionic conductivity of 1.57×10^(-3)S·cm^(-1)and thermal stability at 210℃.The assembled sodium-ion battery shows superior cycling performance(capacity retention of 94.1%after 500 cycles at 1C)and rate capacity(retention rate of 87.3%at 10C),and it maintains fine interface *** above results provide some new ideas for the separator design of high-performance and low-cost sodium-ion batteries.

摘要：Li-metal anodes are one of the most promising energy storage systems that can considerably exceed the current technology to meet the ever-increasing demand of power applications. The apparent cycling performances and dendrite challenges of Li-metal anodes are highly influenced by the interface layer on the Li-metal anode because the intrinsic high reactivity of metallic Li results in an inevitable solid-state interface layer between the Li-metal and electrolytes. In this review, we summarize the recent progress on the interfacial chemistry regarding the interactions between electrolytes and ion migration through dynamic interfaces. The critical factors that affect the interface formation for constructing a stable interface with a low resistance are reviewed. Moreover, we review emerging strategies for rationally designing multiple-structured solid-state electrolytes and their interfaces, including the interfacial properties within hybrid electrolytes and the solid electrolyte/electrode interface. Finally, we present scientific issues and perspectives associated with Li-metal anode interfaces toward a practical Li-metal battery.

摘要：核级阀门现场使用可靠性水平与设计、制造等过程息息相关,通过可靠性鉴定与验收试验的产品通常具有较高的使用可靠性水平。因此,本文以核级阀门为研究对象,对核级阀门及其试验进行总结,并基于已开展的阀门可靠性鉴定试验进行故障率趋势分析和故障原因分析。结果表明,阀门可靠性鉴定试验大致可分为早期、中期、末期三个阶段,且试验早期的故障率最大,早期故障对试验的影响也最大。最后,基于分析结果和阀门可靠性鉴定试验现状,针对如何提升核级阀门质量与可靠性进行探讨,以达到降低现场使用故障率、提高现场使用可靠性的目标。本文成果可应用于核级阀门可靠性鉴定与验收试验方案设计。