Gas Warning Systems Articles

  • Array gain and reduction of self-noise

    Abstract—Because an array is composed of many sensors, each making an independent measurement of the wavefield, intelligent combination of the sensor signals should lead to an overall increase in the signal-to-noise ratio. What we are trying to achieve is enhancing the signal with an array beyond what is possible with a single sensor. The array gain measures an array’s signal-to-noise ...


    By Norsonic AS

  • Technical and safety practices

    Safety is absolutely paramount in the medical industry, with lives literally at stake if something were o go wrong. Regrettably, this was more than reinforced recently following the tragic news of a death of a newborn at a hospital in Sydney, Australia, after it was mistakenly administered nitrous oxide (N2O) instead of oxygen (O2) in July this ...


    By Geotech

  • Keeping Healthcare/SPD Workers Safe from Exposure: 2 Very Different Options

    Continuous Monitoring vs. Badges Badges are designed to provide the Time Weighted Average (TWA) data for the total exposure period. They contain an absorption medium that reacts with or absorbs and holds the target chemical from the air to be analyzed later, which indicates the exposure after the fact. Badges, sample tubes, and wet chemical methods were the predominant technologies for monitoring ...


    By ChemDAQ, Inc.

  • Synthesis and performance of antifouling and self-cleaning polyethersulfone/graphene oxide composite membrane functionalized with photoactive semiconductor catalyst

    This study was performed to synthesize membranes of polyethersulfone (PES) blended with graphene oxide (GO) and PES blended with GO functionalized with photoactive semiconductor catalyst (TiO2 and ZnO). The antifouling and self-cleaning properties of composite membranes were also investigated. The GO was prepared from natural graphite powder by oxidation method at low temperature. TiO2 ...


    By IWA Publishing

  • Self-purification of marine environments for heavy metals: a study on removal of lead(II) and copper(II) by cuttlebone

    The aim of this study was to determine adsorption properties of cuttlebone, cuttlefish bone as dead biomass, for lead(II) and copper(II) from aqueous solutions. Adsorption kinetic, isotherm and effect of pH (in the range of 2.0–7.0) were investigated in a single component batch system at room temperature (25 ± 1 °C). The heavy metal adsorption by cuttlebone was relatively rapid ...


    By IWA Publishing

  • Don’t Risk Your Life Going Up in Smoke

    What you need to know about smoke alarms Fire is an inescapable risk in both the home and workplace, with electrical products, heating and gas all presenting the possibility of an accidental blaze under the wrong circumstances. Preventing fires altogether with effective precautions is always preferable, but regardless at least one smoke alarm/detector – or mains powered ...


    By SHEilds Ltd

  • Alberta Sees an Alarming Rise in Suicide Rates Following Harsh Oilpatch Layoffs

    Following rising rates of layoffs in Alberta’s oil and gas industry in response to low oil prices, suicide rates in that province have increased by an alarming 30 percent this year. There were 327 suicides recorded between January and June 2015 and it is predicted that number could swell to 654 cases by year’s end. According to the Centre for Suicide Prevention, Alberta sees ...


    By SafetySmart

  • Carbon Monoxide (CO) and Carbon Dioxide (CO2) Safety

    Know the Gases, Know the Dangers and Protect Yourself Do you know the differences between carbon monoxide (CO) and carbon dioxide (CO2)? If you don’t then there are no guarantees your safety measures will be adequate. These two different gases are often mixed up with people becoming confused over which they need to protect against, when and how. ...


    By SHEilds Ltd

  • Self-adjustment mechanism of bed structures under hydrology and sediment regimes

    Bed structures develop in many coarse gravel-bed rivers, and the distribution of bed structures is obviously impacted by the environment conditions, especially hydrology and sediment regimes. This study carried out field investigations in natural tributaries of the Yangtze River to study the sizes of bed structures, their distribution in the basin, as well as their connections with local ...


    By IWA Publishing

  • PureAire Universal Gas Monitor Receives UL Listing

    PureAire is pleased to announce that its PureAire Universal Gas Monitor received the UL/CUL listing for models 99030 and 99031. PureAire’s Universalmonitors comply with national and international safety standards, including UL 61010-1, CSA C22.2 NO. 61010-1-12-CAN/CSA, and IEC/EN 31010-1.  Designed to protect against toxic gases including ammonia, bromine, chlorine, hydrogen ...

  • Hydropolitical Self-Organization theory; system dynamics to analyse hydropolitics of Helmand transboundary river

    The paper is based on the hydropolitical driver concept and analyses non-technological drivers responsible for the depletion of water resources determining the hydropolitical situation over time. To tackle the complexity stemming from the heterogeneity of drivers, the paper adopts both theoretical hydropolitics (hydropolitical driver concept) and system dynamics (SD) (causal loop diagrams ...


    By IWA Publishing

  • The influence of progressive beer duty in the UK

    Forget fancy cocktails or a glass of prosecco, the most popular choice of drink in Britain is beer. And it’s no wonder, with more than 5,000 high quality beers to choose from. If you went into a pub and witnessed what people ordered, for every ten drinks, seven are likely to be beer, while the other three are usually wine, cider or spirits. ...


    By Analox Sensor Technology

  • FineFog Fire-Fighting System for Algoma

    DESMI has signed a fire-fighting package contract for a new building project at 3. MAJ shipyard Croatia. The project is a series of Great Lakes self unloading bulk carriers, (hull numbers 732/733/527/528/529) classed by LR, and registered under Canadian flag. The fire-fighting system package includes: 1. Accommodation water sprinkler system for cabins and service space 2. Engine room local ...


    By DESMI A/S

  • First Ax60 installed in McDonalds in China and they’re lovin’ it

    Analox is breaking into new markets after the first Ax60 carbon dioxide detector was installed in McDonalds in China. Analox have a global agreement with McDonalds to distribute Ax60’s to their restaurants all over the world, and the very first unit ...


    By Analox Sensor Technology

  • Local self-governance, ethnic division in slums and preference for water supply institutions in Kolkata, India

    This paper investigates the preferences for institutional mechanisms for improved water supply services across different ethnic communities in slums of Kolkata. The Muslim community prefers privatization of water supply as against paid public supply. The backward caste community prefers both paid public delivery and privatization. Residents of non-notified (NN) slums prefer paid public ...


    By IWA Publishing

  • Why a CO2 monitor may be needed? Where carbon dioxide leaks occur

    Do you work with carbon dioxide (or CO2) in your industry? If so, then you may need a carbon dioxide monitor to check for gas leaks that could pose a hazard to your workplace safety. Learn common scenarios where carbon dioxide can leak and see how a CO2 detector can minimize your risk.  Industries Where CO2 Monitors Can Make a ...

  • An investigation into the potential use of nutrients recovered from urine diversion on a summer housing site: self-sufficiency based on nitrogen balance

    ECOSAN is a recent domestic wastewater management concept which suggests segregation at the source. One of these streams, yellow water (human urine) has the potential to be used as fertilizer, directly or indirectly, because of its rich content of plant nutrients. One physicochemical method for indirect use is adsorption/ion exchange using clinoptilolite. This paper aims to present the results ...


    By IWA Publishing

  • EPA Inspector General Releases Report On Need For Better Data For PGCCA

    On September 15, 2015, the EPA Inspector General (IG) released a report criticizing EPA's use of unverified pollution prevention data for the Presidential Green Chemistry Challenge Award (PGCCA). The report, "EPA's Presidential Green Chemistry Challenge Awards Program Lacks Adequate Support and Transparency and Should Be ...


    By Bergeson & Campbell, P.C.

  • Self-organizing map clustering technique for ANN-based spatiotemporal modeling of groundwater quality parameters

    The present study integrates co-kriging as spatial estimator and self-organizing map (SOM) as clustering technique to identify spatially homogeneous clusters of groundwater quality data and to choose the most effective input data for feed-forward neural network (FFNN) model to simulate electrical conductivity (EC) and total dissolved solids (TDS) of groundwater. The methodology is presented in ...


    By IWA Publishing

  • Are self-driving vehicles good for the environment?

    Autonomous transportation has lots of advantages. Reducing greenhouse gas emissions could be one of them. Can autonomous cars be a boon for the environment? The transportation sector is the second largest source of greenhouse gas emissions in the United States, accounting for 27 ...


    By Ensia

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