基于FCS的海水痕量元素的通用测定平台

为了对海水痕量营养盐与重金属进行测定,基于FCS的设计思想,采用流动注射分光光度法研制了具有自适应外界设备、快速组建多种仪器及全数字化通信等特点的软硬件一体化的通用测定平台。平台以ARM(S3C2416)处理器为核心,Linux为操作系统,LCD作为人机交互显示,触摸屏或者USB鼠标完成输入控制,构成完整的嵌入式工控机系统;采用CAN总线并制定CAN应用层协议管理设备,提高了系统的可靠性及抗干扰能力。实际测试和应用证明,该平台自动化程度高,通用性、重用性及可扩展性均较强,可组建成亚硝氮、硝氮、氨氮、活性磷、铁等多种痕量元素的实验室、船载和原位分析系统,检测限为nmol/L级别。平台对样品的测试准确度与商品专用仪器无显著性差异。     

基于普元软件平台的高校出国境管理平台的设计与开发

高校出国境管理在传统模式下通过纸质申请表进行申请的情况等,存在申请过程繁琐、等待时间长、审核结果反馈不及时、已有数据无法共享、数据不易统计等问题.针对以上问题,介绍了基于普元BPS(Business Process Suite,简称流程平台)产品开发的高校出国境管理平台,该平台借助于工作流引擎解决了出国境申请及审核一系列流程的运行和监控问题,同时结合平台阐述了流程图设计的几大要素:分支、聚合、参与者、工作项.经过平台开发和上线使用,证实平台设计和开发方案可以有效降低开发人工成本,提高软件质量,提升用户体验度,有效提高各部门的工作效率.     

Design of fluorescence system based on rutin functionalized gold nanoparticles: Sensitive detection of etimicin via a smartphone in the food and human samples

The abuse and contamination of antibiotics have long been a hot issue of global concern. On the basis of inner filter effect (IFE), this article established the fluorescence detection system of a mixture of Rutin-AuNPs and 7-hydroxycoumarin, realizing the rapid and sensitive detection of etimicin. The system was also successfully applied to actual samples through a smartphone sensing platform. Due to the antioxidant property of rutin, Rutin-AuNPs were green synthesized with uniform particle size, good monodispersity, and favorable stability. As a good fluorescent quencher, Rutin-AuNPs could effectively quench the fluorescence of 7-hydroxycoumarin based on IFE with a quenching percent of 89.81 %. However, etimicin could bind tightly to the surface of Rutin-AuNPs through charge attraction, Au-N bond, and affinity between sugars, leading to the replacement of 7-hydroxycoumarin. In addition, one or more of the above effects caused aggregation of Rutin-AuNPs, leading to fluorescence recovery rapidly. A linear response between the fluorescence system and etimicin was reasonably established with detection limits as low as 0.12 μM. This system was successfully applied to real sample detection. Moreover, the great potential smartphone sensing platform was also built for practical application owing to its advantages of digitalization and portability.     

硬件在回路仿真平台的ABS测试方法

为了缩短汽车防抱死制动控制系统的开发测试时间,提出了硬件在回路仿真平台的ABS测试方法,在研究车辆动力学模型的基础上,设计了基于FPGA的片上仿真器;结合片上仿真器,提出了电磁阀特性模型,制动系统模型和基于片上仿真器的仿真方法;基于片上仿真器,开发了具有自主知识产权的硬件在回路仿真测试平台,模拟汽车的运行情况,为电控单元(ECU)提供一个模拟的车辆运行的环境,减少实际装车实验的成本;企业试用表明该平台独立于车辆物理系统,适用于多种车型.在此平台上对ABS进行了仿真测试和控制参数匹配,试验证明,该仿真平台可缩短ABS的开发时间.     

信道编码测试平台的建立

为获得信道编译码器的实际性能,建立了基于硬件的信道编码测试平台.给出了平台的设计方案.提出了一种改进的高斯白噪声设计方法.χ2和K-S检验结果表明,产生的样本服从高斯分布,且样本"尖锐"的自相关特性及近似常数的功率谱密度样本具有白噪声特性.在现场可编程门阵列(FPGA)上实现了此测试平台.经实例验证,建立的平台可用作信道编译码器和新型译码算法的测试工具.     

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。     

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.