石化厂区有毒气体泄漏在线监测平台的构建

针对石化厂区在生产过程中可能发生有毒气体泄露带来的生产安全问题,构建了石化厂区有毒气体在线监测平台。该平台是由PC监控中心、网络监控中心、ARM便携式终端、安卓手机客户端组成。实现对石化厂区中有毒气体及环境参数的实时、在线监测和预警,使生产管理人员掌握石化厂区的有毒气体实时动态信息,对可能引发危险事故的因素及时排除,把危险控制在始发阶段,以实现化工生产的安全、持续、高效进行。测试结果表明该平台能实现所设计的各项功能,并具有良好的稳定性、安全性和实用性。     

基于Web的实时漆包线材生产设备监控平台设计

为了实现漆包机生产的远程监控,设计了一款基于Web的实时漆包机远程监控平台。该平台使用模块化,可扩展的设计方案,采用了Spring MVC的后台Web应用程序框架,基于Modbus协议的数据交互,Ajax方式的网络数据异步提交以及无刷新的图表显示技术。传统的监控平台只能通过以太网在企业内部访问,而该平台可接入互联网,可实现随时随地通过电脑及或者移动终端对生产设备各部分的温度点、电机风机转速、耗电量统计的实时监视,对温度的上下限及电机转速进行远程控制,接收设备状态异常的实时报警,数据存储分析。实验测试表明,该平台的实时性和稳定性均能达到车间生产的要求。     

基于“1+2”模式的结构化学课程在线教学实践

Since the outbreak of novel coronavirus pneumonia (NCP) at the beginning of this year, Chinese government acted immediately and made some regulations to control the epidemic NCP and promote the recovery of society and industry including education. Chinese universities stayed on the online courses without suspension on teaching and learning. Herein, we report online teaching of structural chemistry course based on the teaching mode of online live broadcast platform, online course resources and management platforms ("1 + 2" mode). This may promote online teaching, and take advantage of online live broadcast and massive open online courses, which achieves good teaching and learning experiences on structural chemistry course.     

微信平台辅助的农科有机化学实验课混合式教学实践

利用微信公众平台和移动网络辅助教学的优点,改革农科院校中非化学专业公共基础有机化学实验课传统教学模式,构建了“课前翻转教学,课中解惑内化,课后巩固提高”的三段混合式新型教学模式,并对此类教学模式的构建原则,特色微信公众平台建设、应用情况及注意事项进行实践研究。     

Wearable Multiparameter Platform Based on AlGaN/GaN High‐electron‐mobility Transistors for Real‐time Monitoring of pH and Potassium Ions in Sweat

Biosensors based on field‐effect transistor (FET) structures have attracted considerable attention because they offer rapid, inexpensive parallel sensing and ultrasensitive label‐free detection. However, long‐term repeatable detection cannot be performed, and Ag/AgCl reference electrode design is complicated, which has hindered FET biosensors from becoming truly wearable health‐monitoring platforms. In this paper, we propose a novel wearable detection platform based on AlGaN/GaN high‐electron‐mobility transistors (HEMTs). In this platform, a sweatband was used to continuously collect sweat, and a pH detecting unit and a potassium ion detecting unit were formed by modifying different sensitive films to realize the long‐term stable and repeatable detection of pH and potassium ions. Experimental data show that the wearable detection platform based on AlGaN/GaN HEMTs has good sensitivity (pH 3–7 sensitivity is 45.72 μA/pH; pH 7.4–9 sensitivity is 51.073 μA/pH; and K⁺ sensitivity is 4.94 μA/lgα_K⁺), stability (28 days) and repeatability (the relative standard deviation (RSD) of pH 3–7 sensitivity is 2.6 %, the RSD of pH 7.4–9 sensitivity is 2.1 %, and the RSD of K⁺ sensitivity is 7.3 %). Our newly proposed wearable platform has excellent potential for predictive analytics and personalized medical treatment.     

Enzyme-free and DNA-based universal platform for the construction of various logic devices based on graphene oxide and G-quadruplex

In the fields of biocomputing and biomolecular, DNA molecules are applicable to be regarded as data of logical computing platform that uses elaborate logic gates to perform a variety of tasks. Graphene oxide (GO) is a type of novel nanomaterial, which brings new research focus to materials science and biosensors due to its special selectivity and excellent quenching ability. G-quadruplex as a unique DNA structure stimulates the intelligent application of DNA assembly on the strength of its exceptional binding activity. In this paper, we report a universal logic device assisted with GO and G-quadruplex under an enzyme-free condition. Integrated with the quenching ability of GO to the TAMRA (fluorophore, Carboxytetramethylrhodamine) and the enhancement of fluorescence intensity produced by the peculiar binding of G-quadruplex to the NMM (N-methylmesoporphyrin IX), a series of basic binary logic gates (AND. OR. INHIBIT. XOR) have been designed and verified through biological experiments. Given the modularity and programmability of this strategy, two advanced logic gates (half adder and half subtractor) were realized on the basis of the same work platform. The fluorescence signals generated from different input combinations possessed satisfactory results, which provided proof of feasibility. We believe that the proposed universal logical platform that operates at the nanoscale is expected to be utilized for future applications in molecular computing as well as disease diagnosis.     

动力设备和环境集中监控系统的应用

基站动力设备及环境集中监控系统在移动公司的运营维护中已发挥了不可替代的作用,本文通过对基站动力设备和环境集中监控系统应用实例的研究分析,着重探讨如何充分发挥监控系统的作用,为移动通信网络新的运营维护管理模式提供科学理论依据。     

位置服务平台解决方案

本文讨论了东信北邮信息技术有限公司位置服务平台的系统总体结构设计、功能模块设计、进程拓扑图.     

新一代的业务交付平台架构研究

本文首先详细介绍了业务交付平台(service delivery platform,SDP)的架构,重点描述了SDP的分层结构、组成和功能,然后介绍了基于SDP/IMS的融合业务方案.最后本文提出了新一代的SDP的架构,指出SDP的水平分层结构在促进网络能力集的开放、网络融合和业务融合等方面对电信运营商建设新一代的业务管理平台具有较好的参考价值.     

新形势下中国半导体设备的发展对策

随着半导体生产热点全球性地向中国转移,国内的半导体设备行业面临着空前的巨大机会和前所未有的严峻挑战。在全面深入分析半导体设备特性以及行业发展特点的基础上,指出核心技术是产品性能和成本即市场生命力的决定性因素。针对当前国内半导体设备开发中普遍存在的偏差与误区,提出了努力促进企业自身对核心技术全面深入的掌握,不断增强其自主持续创新能力的半导体设备发展对策。以全自动引线键合机开发和市场的具体详细实例印证这一论断。