biosensor-based measurement system Articles

  • Performance-Based Measurement Systems

    Many of the Environmental Protection Agency's (EPA's) methods used to monitor air, water and soil for environmental contaminants prescribe step-by-step details on how the chemical analysis must be conducted and prohibit any deviations or variations. The EPA has recognized that monitoring equipment and technology have improved tremendously over the last few years; that environmental media do not ...


    By WSP | Parsons Brinckerhoff

  • A novel image processing-based system for turbidity measurement in domestic and industrial wastewater

    Wastewater treatment facilities are continually challenged to meet both environmental regulations and reduce running costs (particularly energy and staffing costs). Improving the efficiency of operational monitoring at wastewater treatment plants (WWTPs) requires the development and implementation of appropriate performance metrics; particularly those that are easily measured, strongly ...


    By IWA Publishing

  • Measuring the performance of Chinese regional innovation systems with two-stage DEA-based model

    The regional innovation system (RIS) plays a key role in the growth of a nation's competence. This paper develops a tool to measure the innovative performance of Chinese RIS in the period of 2001-2005. The technique of data envelopment analysis (DEA) is employed to determine a multifactor innovative performance system that inherently recognises the trade-off among various factors. This study ...


    By Inderscience Publishers

  • Measuring the Effectiveness of Watershed-Based General Stormwater Permitting

    ABSTRACTThe U.S. EPA and most water resources professionals advocate holistic and adaptive watershed management approaches to the protection and restoration of aquatic ecosystems by encouraging pollution control strategies that are developed through collaborative partnerships within a hydrologic boundary. This paper evaluates the effectiveness of the holistic adaptive management approach through ...

  • Biosensor with total internal reflection imaging ellipsometry

    In order to monitor multiple protein reaction processes simultaneously, a biosensor based on imaging ellipsometry operated in the total internal reflection mode is proposed. It could be realised as an automatic analysis for protein interaction processes with real-time label-free method. Its principle and methodology as well as a demonstration for its applications are presented.Keywords: ...


    By Inderscience Publishers

  • Monitoring of Hydrogen Sulfide in Industrial Processes

    Hydrogen sulfide, H2S, is a very poisonous, corrosive, and flammable gas. As such, it needs to be carefully monitored and controlled in industrial processes where it is generated or used. At relatively low concentrations, it has an odour of rotten eggs which effectively works as a warning, but at higher concentrations where it becomes acutely toxic and even lethal, it can no longer be smelled ...


    By Opsis AB

  • Schedule performance measurement based on statistical process control charts

    In a job–shop environment, achieving a schedule that is on target is difficult due to the dynamism of factors affecting the system. In this paper the Shewart's Individuals control chart is applied to a scheduling process for the purpose of measuring schedule performance. The charts are applied to monitor the deviations of actual from scheduled process times for jobs on a process machine. Data ...


    By Inderscience Publishers

  • How to Securely Record Measurement Data: PC-Based or Stand-alone?

    How to Securely Record Measurement Data is a very common question asked when deciding a PC-Based or Stand-alone DAQ System. Continuous, secure data acquisition system is possible both with a PC-based system or a stand-alone independent system. Which system you choose depends not only on your application but also on your infrastructure and available budget. ...


    By CAS DataLoggers

  • Knowledge-based system for automatic MBR control

    MBR technology is currently challenging traditional wastewater treatment systems and is increasingly selected for WWTP upgrading. MBR systems typically are constructed on a smaller footprint, and provide superior treated water quality. However, the main drawback of MBR technology is that the permeability of membranes declines during filtration due to membrane fouling, which for a large part ...


    By IWA Publishing

  • Flow measurements in sewers based on image analysis: automatic flow velocity algorithm

    Discharges of combined sewer overflows (CSOs) and stormwater are recognized as an important source of environmental contamination. However, the harsh sewer environment and particular hydraulic conditions during rain events reduce the reliability of traditional flow measurement probes. An in situ system for sewer water flow monitoring based on video images was evaluated. Algorithms to determine ...


    By IWA Publishing

  • An agent-based approach for generating virtual sewer systems

    The application of artificial case studies is a well established technique in urban drainage to test measures, approaches or models. However, the preparation of a virtual case study for a sewer system is a tedious task. Several algorithms have been presented in the literature for an automatic generation of virtual sewer systems. Applying the approach of generating virtual cities by means of the ...


    By IWA Publishing

  • New laser-based dust emission monitoring system

    Abstract A new generation of continuous particulate matter concentration monitoring instruments is presented, covering a measuring range of 0 to 1000 mg/m3. The laser-based scattered light instrument gives an improved stability as well as excellent resolution in the low range. This enables high concentration measurement as well as especially low emission monitoring down to 0.01 mg/m3 with a ...


    By SIGRIST - PHOTOMETER AG

  • Developing a performance measurement system for world-class distribution logistics by using activity-based costing and management. Case: basic metal industries

    The performance of distribution logistics has developed into a significant element in the competitiveness of an industrial company. The basis for the development has been the globalisation of the markets in the 20th century, the customer's increased demand for service and the capital intensiveness of distribution logistics. In order to have control over the performance and capability to direct ...


    By Inderscience Publishers

  • An event-based hydrologic simulation model for bioretention systems

    Bioretention systems are designed to treat stormwater and provide attenuated drainage between storms. Bioretention has shown great potential at reducing the volume and improving the quality of stormwater. This study introduces the bioretention hydrologic model (BHM), a one-dimensional model that simulates the hydrologic response of a bioretention system over the duration of a storm event. BHM ...


    By IWA Publishing

  • Real-time control of sewer systems using turbidity measurements

    Real-time control (RTC) of urban drainage systems has been proven useful as a means to reduce pollution by combined sewer overflow discharges. So far, RTC has been investigated mainly with a sole focus on water quantity aspects. However, as measurement techniques for pollution of wastewater are advancing, pollution-based RTC might be of increasing interest. For example, turbidity data sets from ...


    By IWA Publishing

  • Online flow measurement

    Background The undershoot weir in Hohensaaten was built in 1913. It has three openings and regulates the discharge from the Oderbruch and from the Finow canal into the Hohensaaten-Friedrichsthaler-waterway. Moreover, it protects parts of the Oderbruch against Oder floods. The weir controls the waterlevels in the Havel-Oder-waterway and in the reach of Niederfinow- Hohensaaten. ...


    By OTT HydroMet

  • A measurement vision for the future

    Professor John Pethica is the National Physical Laboratory's (NPL) chief scientific adviser. He took up the role at the tail end of 2007 and here lays out his vision for the future of the UK’s National Measurement Institute. For thirty years I have worked across both public and private sectors, using cutting-edge science to establish new businesses and advise on public policy. This has taken me ...

  • Web4diagnostics – experience with web-based diagnostic systems in power plants

    At SMORN 8, a new web-based diagnostic system – web4diagnostics – was presented (Kunze, 2002). During the last two years, this system became the standard diagnostic system infrastructure for internal use in Siemens Power Generation, which integrates a large data archive of measured data and capabilities for data analysis and evaluation. Besides this internal use, today some 15 power plants ...


    By Inderscience Publishers

  • MONET indicator system: the Swiss road to measuring sustainable development

    This paper examines the question of how to build a system of sustainable development indicators that takes into account the needs of users but nevertheless adheres to the principles of impartiality, independence and transparency of public statistics. The approach used in Switzerland on a national level to face this challenge is a three-step process: establishing a frame of reference, developing a ...


    By Inderscience Publishers

  • Bed Level Measurement

    Numerous studies and papers have been devoted to the subject of thickener design and operation to achieve specified throughput and discharge densities. Mathematical models have been developed that present methods for sizing thickeners and predicting performance under varying process conditions. The compression effect of deeper beds on dewatering performance is a recognized phenomenon. This is one ...


    By WesTech Engineering, Inc.

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