v-fold Articles

  • Importance of Inspecting Reservoirs

    Inspecting Reservoirs – what is the importance of them, why they are inspected, and how ROVs help pave the way for low-cost, regular maintenance. What is a Reservoir? Deriving from the French word réservoir meaning “storehouse,” a reservoir is exactly that – a storage place for water. More often than not, these bodies of water are ...


    By Deep Trekker Inc.

  • E-Z Trays an Integral Part of Levelland`s Groundwater Treatment - Case Study

    QED E-Z Tray® Air Strippers an Integral Part of Levelland's Groundwater Treatment System The refinery at the former Motor Fuels Corporation produced all grades of gasoline, tractor fuels, diesel, distillate products, and fuel oils. It closed in 1954 after 15 years of operation, and the refinery equipment was removed by 1958. The property has since been redeveloped, but the ...


    By QED Environmental Systems

  • Treating drinking water with 99% removal - Case Study

    QED E-Z Tray® Air Stripper Treating Drinking Water with 99% Removal in Cedarburg, Wisconsin In October 2011, the Cedarburg, Wisconsin Light and Water Utility installed a QED E-Z Tray® (U.S. Patent Number 5,518,668) Air Stripper in a discreet addition to their existing production pump building. The E-Z Tray 72.6 handles a flow rate of ...


    By QED Environmental Systems

  • Zero Waste Co., Ltd, Bangkok, Thailand - Case Study

    Thailand has a very comprehensive waste management system. Their national disposal plan is organized by the Royal Thai Government, and then distributed among the central government, regional governments, and local governments. Each agency oversees different part of the system. The central government and its ministries set standards and policies and define regulatory regimes. Provincial and ...


    By All Power Labs

  • Odour Control at Pesticide Facilities: Eliminating volatile compounds

    Chemical formulation plants are susceptible to emissions of unpleasant and malodorous volatile compounds, a fact which makes the implementation of efficient odour control measures essential. North-western Spain is home to one of the country's oldest industrial sites for the manufacture of phytosanitary products, with some facilities located relatively close to populated areas. Recently, the ...


    By Bioconservacion SA

  • How to Choose the Right Energy Management Software [GUIDE]

    Happy New Year! Wait, what’s wrong? Not so happy? In trouble trying to choose the right energy management software for your project? Oh no! We can just picture the scene: your desk is piled high with brochures, quotes and provider offers… and the clock is ticking. Yours is the classic energy manager dilemma: the longer ...


    By DEXMA

  • Oil Sampling Best Practices (Part 2)

    Understanding Dynamic Particle Equilibrium in Closed Loop Systems Dynamic Equilibrium Condition (DEC) is defined as a steady state condition where the normal wear rate in a machine results in no net gain or loss of particles. ...


    By Spectro Scientific

  • How a contract research lab advanced its polymer characterization capabilities

    Realizing the Advantages of Ultra-High-Performance Size Exclusion Chromatography Compared to GPC Intertek is a global provider of quality and safety services designed to help businesses improve products, assets and processes, overcome market constraints and reduce risks. From auditing and inspection, to testing, training, and certification, Intertek enables customers to meet end ...


    By Waters Corporation

  • Title V Compliance

    Title V of the Clean Air Act Amendments assimilates all the contents of a facility's state operating permit into one binding document, in an effort to simplify permit compliance certification. However, submittal of annual compliance certification is a labor-intensive process that places significant pressure on EH&S personnel responsible for ensuring that a facility meets all the conditions in its ...

  • Renaissance of paper models and folded plate structures in glass

    This paper presents the development of glass folded plate structures. Glass will not only be used as a transparent covering but as a load-bearing element for the whole structure. A complete outline ranging from the architectural approach including simple paper models to structural analysis will be presented. The structural concept and its functional characteristics will be confirmed by finite ...


    By Inderscience Publishers

  • Oxidation v. reduction: how to decide?

    Is in-situ chemical oxidation (ISCO) or in-situ chemical reduction (ISCR) the best option for your site? What factors should be considered to make such a decision? Many chlorinated hydrocarbon compounds (CHCs) can be degraded via oxidative or reductive processes. Accordingly, various ISCO technologies using oxidizing agents such as hydrogen peroxide (Fenton’s chemistry), permanganate, ozone or ...


  • Software review: dips v.5.0

    Dips (5.0) for WINDOWS is the latest version of the brawny steregraphic projection program from Roescience'. It comes packed with enoough functionality to provide solutions to the most complex problems in the fields of Earth Sciences or Engineering requiring the analysis of orientation based data. Dip has obviou applications in the fields of: Stability/instability investigations in mining or ...


    By Rocscience Inc.

  • Collapsible crate mold, folding crate mold, foldable crate mold maker

    Folding crate, foldable crate, turnover box with collapsible design. In order to suitable to your businesses limited space, you should buy a storage container that ...


    By Focare Mould Co.,Ltd.

  • A folded wedge model for determination of true stratigraphic thickness in directional wells

    For exploration and development the geologists and engineers try to know the true stratigraphic thickness (t). The monoclinal and folded bed models are published methods for t calculation. Both models assume parallel beds which can lead to significant deviations. In order to calculate the values of t considering the effects of both folding and stratigraphic variation we propose the 'folded wedge ...


    By Inderscience Publishers

  • When to Hold and When to Fold - Considerations When Contemplating a Job Change

    An environmental professional recently called me for career advice on making a job change. He has a secure job working for a federal agency, but was bored and wanted to work for an organization "with a corporate culture that truly is in sync with sustainable development." Should he make the move, and if so, which are the best companies? I answered, "No, wait until the economy improves, build both ...

  • Power-fold actuator noise diagnostics using statistical envelope analysis

    A good correlation between subjective evaluation and objective test is a key for any machine condition monitoring and fault diagnosis process. This paper proposes a statistical envelope analysis approach for product quality control where Fourier spectrum is selected as diagnosis analysis characteristics. The acceptance amplitude envelope is statistically calculated from the measured random ...


    By Inderscience Publishers

  • Rain Gauge Fixed with 12 V Regulator

    A friend came to me with a curious problem regarding the research weather stations he maintains. The Geonor rain gauges were experiencing glitches. Some of his stations exhibited only occasional problems, and others were failing almost daily. In the plot below, the rain gauge output is in blue. It should be a steady, increasing line representing the weight of the accumulated precipitation. ...


    By Dyacon, Inc.

  • Symposium: Whitman v. American Trucking Association (PDF)

    In Whitman v. American Trucking Associations, Inc., the Supreme Court upheld traditional interpretations of §109 of the Clean Air Act, ruling that EPA may consider only public health and safety in setting ambient air quality standards and it may not engage in a cost-benefit analysis, as urged by industry groups. Also, contrary to the decision of the D.C. Circuit, the high Court ruled that EPA’s ...


    By Bergeson & Campbell, P.C.

  • AMETEK THERMOX Introduces the WDG-V Combustion Analyzer

    Abstract AMETEK THERMOX Introduces the 5th Generation THERMOX Combustion Gas Analyzer in a CONTROL Magazine Exclusive. WDG analyzers are based on a zirconium oxide cell that provides a reliable and cost-effective solution for measuring excess oxygen in flue gas as well as CO and methane levels.  Information from the Gas Analyzer allows operators to obtain the highest ...

  • Do You Know the 4 V’s of Big Data?

    From professional sports, to advertising, to investment banking and almost everything in between. Big data is driving thousands of decisions each day that impact us all in areas big and small. But what is big data exactly, and how or why should it impact efforts in the realm of health and safety? First a definition of big data itself. Big data is a term that began to emerge over the last decade ...


    By Intelex Technologies Inc.

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