v-fold Articles

  • Effect of OSE(II)-Enhanced Soil Washing(OESW) for TPH -Contaminated Soil Remediation

    The objectives of this study were to perform potentially suitable active agent that solubilize total petroleum hydrocarbon (TPH) present as contaminants and to evaluate the optimal range of process parameters that can increase the removal efficiency in OSE(II)-enhanced soil washing (OESW) pilot tests. Used experimental method for solubilisation of TPH by using OSE(II) was batch experiments. The ...

  • Minimum Total Harmonic Distortion on board Scandlines New Hybrid Ferries Berlin & Copenhagen - Case Study

    In 2016, Scandlines inaugurated two new hybrid ferries for the Rostock-Gedser route. In order to improve the power quality, Scandlines installed active filters on board M/V Berlin and M/V Copenhagen. Before commissioning, Scandlines’ new hybrid ferries had a power quality of THDV 15%. In order for the ferries to go into operation, the power quality had to be reduced to below 8 ...


    By DESMI A/S

  • Return on Investment Using MANTECH Multi-Parameter Analysis Systems - Case Study

    Since 2008 Eurofins has been using MANTECH systems at various facilities around the world. Their first system ran 200,000 samples in five years. The unit analyzed 7 different parameters per sample and operated 24 hours/day, 7 days/week. This generated €5,000,000 in revenue. Their initial investment was €60,000. The system discussed in this case study analyses pH, conductivity, ...


    By MANTECH

  • Aquaporin Hollow Fiber FO Membrane Modules (AQPHFFO2)

    Aquaporin hollow fiber membrane modules for forward osmosis studies are now available from Sterlitech. AQP HFFO2 is a cross flow membrane module containing Aquaporin Inside hollow fiber membranes. With an Aquaporin Inside coating on the interior surface of the hollow fibers (lumen side), the feed solution is circulated in the lumen and the draw solution is circulated in the shell. ...


    By Sterlitech Corporation

  • Quality assurance and Quality control technical note

    Introduction For almost 50 years HYDROLAB products have provided dependable sensor technology in a multiple parameter instrument for montioring essential indicators required for assessing water quality in natural waters. Useable data are the lifeblood of any environmental water quality monitoring program and variation in measurement processes impairs the quality of the data that water ...


    By The OTT Hydromet Group

  • Kuriverter IK-110 effect in SWRO plant Extraordinary biofouling reduction - Case Study

    Learn how Kuriverter IK-110 successfully improves biofouling and decreases operation costs in a SWRO plant. ...


    By Kurita

  • 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.

  • 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 ...

  • 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.

  • 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

  • Release Announcement – SymphoniePRO Desktop Application V.3.0

    We are excited to share the latest version of software for the SymphoniePRO Data Logger. This release, version 3.0, introduces exciting new ...


    By NRG Systems

  • 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.

  • F/V Savannah Ray Defuel - Case Study

    The F/V Savannah Ray washed ashore on Long Island, near Kodiak, AK. The wreck was located on rocky shore line surrounded by vertical cliffs with open fetch on three sides to the Gulf of Alaska. Weather and location proved very difficult to access. First low tide time period at end of February allowed for defueling stern tanks (3). Second mission in early March allowed for drilling and measuring ...

  • 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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