烹饪气溶胶净化方法的研究

经液体吸收剂和固体吸附剂处理，烹饪气溶胶的净化效率可达到９０％左右。     

基于产品生命周期的环境成本核算

实现可持续发展和循环经济已成为我国国民经济和社会发展的战略目标。本文以这一目标为导向,通过对产品生命周期各个阶段环境成本的确认、计量与报告,正确的计算产品环境成本,为信息使用者提供决策相关的信息,以期达到节约资源、保护环境、降低产品生命周期成本的目的,从而实现企业经济效益和生态效益的双赢。     

3D environmental extremum seeking navigation of a nonholonomic mobile robot

A nonholonomic under-actuated robot with bounded control travels in a 3D region. A single sensor provides the value of an unknown scalar field at the current location of the robot. We present a new kinematic control paradigm to drive the robot to the maximizer of the field, which is different from conventionally trying to align the velocity vector with the field gradient. The proposed strategy does not employ gradient estimation and is non-demanding with respect to both computation and motion. Its mathematically rigorous analysis and justification are provided. Simulation results confirm the applicability and performance of the proposed guidance approach.     

环保云的体系结构及关键技术研究

目前国内环保云建设正处在起步阶段,本文运用系统研究方法、流程分析方法、层次分析法和学科融合方法对环保云的体系结构及关键技术进行了深入研究。给出了一种环保云的平台结构,环保云SOA（Service Oriented Architecture）架构,环保云的信息资源层次框架和环保云的管理平台,对推动国内环保云的建设具有一定的参考价值。     

基于虚拟仪器技术的环境噪声自动监测分析仪

针对传统的环境噪声监测与分析仪器功能单一化,提出了环境噪声连续实时监测与同步时频分析一体化的设计思想,自行开发了基于虚拟仪器技术的新型环境噪声自动监测分析仪.本设计以电容声压传感器和PC机及其自带声卡为硬件,在LabVIEW平台上通过软件二次开发,实现环境噪声信号采集、参量计算、时频分析、声源类型判定多功能一体化.通过50 dB-90 dB测量范围内试验测试:该仪器可以实现0.01 dB的分辨率;能够长时间连续实时自动监测并记录瞬时声级、最大声级、连续等效声级;具有图形化实时显示噪声时域波形和频谱并自动判定声源类型的功能;可以自动实现环境声级超限报警并记录相关数据.     

张家口市尾矿库环境风险遥感监测应用研究

尾矿库是一种巨大的环境风险源,一旦发生事故,会给周边环境带来严重危害,因而成为环境应急监管的重点。特别是近年来由尾矿库引起的突发环境事件呈现高发态势,使得尾矿库环境应急管理形势严峻。当前,我国尾矿库环境监管能力薄弱,主要依靠地面调查,信息与技术支撑能力严重不足。为此,面向环境应急管理的工作需求,在分析尾矿库特性及遥感技术特点的基础上,提出了尾矿库环境监管指标体系和监测方法,并以张家口为例,开展了“天地”一体化的尾矿库环境风险监测应用示范,增强了尾矿库的环境监管能力,同时也拓宽了遥感的应用面,为建立基于“天地”一体化的尾矿库环境监管技术体系和服务平台奠定了初步的技术基础。     

Sustainability management and its software support in selected Italian enterprises

Sustainability is a very important factor in long-term entrepreneurial success. Company-wide sustainability management is mandatory and requires software support if it is to be conducted efficiently. This paper aims to investigate the approaches and instruments that selected Italian enterprises have implemented for company-wide sustainability management. We conducted a multiple-case study of 30 selected companies. The results show that the selection and deployment of sustainability instruments differ from enterprise to enterprise. However, all of the enterprises studied exhibited substantial uncertainty about the extent of possible future governmental regulations that would necessitate adaptations to existing systems, causing high costs and requiring large resource deployments. This is why software support of sustainability instruments is often managed using Excel-based solutions. The absence of governmental regulations is clearly constraining the technological development and enhancement of enterprise-wide software support for sustainability management instruments.     

500kV变电站关键服务器环境信息管理系统研究

结合河北南网500kV变电站综合自动化系统运行的现状,本文分析了集控中心模式下智能变电站站端设备安全稳定的需求和技术发展,论述了在河北南网建设关键服务器环境信息管理系统的必要性;并以该电网500kV变电站集控模式下关键服务器环境信息管理系统的建设为例,整体介绍了该类系统的总体设计、数据通讯、数据采集等问题。     

Zeolite-modified WO3 gas sensors – Enhanced detection of NO2

Solid-state metal oxide gas sensors with zeolite overlayers have been developed as a means to improve sensor selectivity. Screen printed tungsten oxide (WO₃) sensors were modified by the addition of acidic and catalytic zeolite layers. The sensors were characterised before and after sensing experiments using X-ray diffraction, energy dispersive X-ray analysis and scanning electron microscopy. The sensors were tested against various gases and gas mixtures to assess their discriminatory behaviour. The results show that the sensors response can be tailored to be selective towards specific target gases by changing the zeolite; for example the H-ZSM-5 sensor gave a response 19 times greater to NO₂ than an unmodified control sensor. It was observed that the WO₃ based gas sensors showed a remarkable selectivity towards NO₂ in a gas mixture. The sensors also showed high levels of stability and sensitivity and have potential to be used in electronic nose technology.     

Two-dimensional molecular imprinting approach for the electrochemical detection of trinitrotoluene

In this work, we demonstrated a sensitive and selective electrochemical sensing protocol for the detection of TNT prepared from alkanethiols self-assembled on AuNPs modified glassy carbon (GC) electrode with preadsorbed templates of TNT. It demonstrated that the 2D molecular imprinting monolayers (MIMs) can provide a better site accessibility and lower mass-transfer resistance, while the AuNPs can enhance electrode conductivity, facilitate the electron transfer and increase the amount of TNT-imprinted sites. The prepared sensor showed not only high selectivity toward TNT in comparison to other similar nitroaromatic compounds (NACs), but also a wide linear range over TNT concentration from 4.0 × 10⁻⁸ to 3.2 × 10⁻⁶ M with a detection limit of 1.3 × 10⁻⁸ M (S/N = 3). Moreover, the imprinted sensor has been applied to the determination of TNT in spiked environmental water samples and shows promise for fast and sensitive measurement of trace levels of TNT in real samples.