underwater temperature Articles

  • Scintillation effect in LISST – The importance of temperature differences

    Scintillation is what makes stars twinkle. It is what causes mirage in deserts or on hot surfaces. It is what causes shimmer underwater in the vicinity of hot vents in oceans. These effects result from temperature fluctuations in air or water. The same effect can occur in a LISST optics cell if not properly controlled . The importance of scintillation in LISST instruments first became evident ...


    By Sequoia Scientific, Inc.

  • Plastic Recycling in beautiful South Carolina case study

    Palmetto Synthetics currently manages multiple production lines at their Kingstree, South Carolina facility. With their in-house equipment, Palmetto Synthetics has the capability to produce specialty fibers from 1.5 to 2000 denier with greater efficiency and consistency. Having such specialized equipment enables Palmetto Synthetics the opportunity to custom design the right fiber type, right ...


    By WEIMA

  • The design of static mixer heat transfer equipment for adhesives, sealants, resins and polymers.

    The fluids handled within the adhesives and sealant industries are amongst the most difficult to handle of any in the main process industries globally. The characteristics which make them particularly difficult to handle include: High viscosities (typically 1-2000 Pa.s, or 1000 to 2 million cP). Often non-Newtonian (viscosity is not constant and varies with shear rate). Some ...


    By National Oilwell Varco

  • Everett, WA - ERH under active storm water retention basin - Case Study

    First below water ERH remediation of TCE in active stormwater retention basin Project Summary TRS Group, Inc. (TRS) worked as a sub contractor to Landau Associates on this unique ERH remediation project. This project represents the first of its kind using ERH for site remediation underneath an industrial storm water retention basin full of water. The ...


    By TRS Group, Inc.

  • Search and Rescue Demo With Deep Trekker

    Search and Rescue operations are a large part of police divers jobs. While it is never nice to hear about a drown victim, the work that police divers do is extremely important to provide closure to the families involved. Each time a brave diver enters the water there is a number of risks involved, especially when the specific task at hand holds so much weight. One of the most ...


    By Deep Trekker Inc.

  • Climate resilience (with oysters)

    Earth’s rising temperatures mean more glacier melt, sea-level rise and severe weather, and this translates to heightened threats for coastline communities. In response, SCAPE Landscape Architecture — powered by President Obama’s Rebuild by Design Initiative — has proposed an innovative way to protect coastlines that ...


    By Ensia

  • Great Lakes need great Data Buoys

    One recently finished project was performed by the University of Wisconsin and has comprised the depolyment of two data buoys which are both furnished with a multifunctional Lufft WS501-UMB. These weather ...

  • Turning coolant contamination into a profitable oil-reclamation program

    What started out as an expensive problem of metalworking coolant contamination has been turned into a profitable oil-reclamation program. Van Huffel Tube of Warren, Ohio – a manufacturer of welded tubing – was spending about $3,000 per year in recharging a soluble-oil coolant tank that would become contaminated with tramp lubricating oil. The 1,000 gallon tank had to be recharged ...


    By Oil Skimmers, Inc.

  • Carbon Credits Explained

    Carbon Credits Explained Over the past one hundred years the capitalist economy we live in has improved our way of living. It's enabled us to progress itself through the years. The free market has provided us with the resources to travel the globe, to give us products beyond our wildest dreams and to build great cities. The free markets accurately reflect ...


    By Carbon Investments

  • Company Introduces New Pipe Repair Products

    InduMar Products, Inc., based in Houston Texas, celebrates twenty years of providing pipe repair and rehabilitation solutions to their industrial and marine customers. Well known for their versatile STOP IT® Pipe Repair System the Company also takes pride in offering custom solutions for many pipe leak, reinforcement and corrosion problems. The combination of sealant development and ...


    By InduMar Products, Inc.

  • The Light at the End of the Tunnel - How to Successfully Operate a UV Disinfection System

    ABSTRACTOver the past ten years, ultraviolet (UV) technology has become a commonly applied method of disinfecting of wastewater effluent. UV disinfection involves passing wastewater effluent through a confined chamber with rows of underwater lamps emitting UV energy. Viruses and bacteria become inactivated upon exposure to dosages of UV energy, thereby disinfecting the wastewater. The UV system ...

  • Ocean science for sustainable development: Facts and figures

    Sarah Grimes explores why we need good ocean monitoring, how to get it, and why it still fails Small Island Developing States. Oceans are a critically important component of the Earth system, supporting ecosystem and human health. They regulate the weather and climate; are essential for producing freshwater; and soak up ...


    By SciDev.Net

  • Asia Analysis: Battling climate impacts in low-lying Maldives

    Going carbon neutral and protecting marine environment are key to fighting climate change in the tiny island nation, says Nalaka Gunawardene. ‘Raise your voice, not the sea level’ is the theme for this year’s World Environment Day, which falls on 5 June. The theme resonates with the United Nations designating 2014 as the International Year of Small Island Developing ...


    By SciDev.Net

  • ELECTRONIC WATER TREATMENT REDUCES FOULING AND CORROSION IN PIPELINES

    Increasing pressure loss in the pipeline is often caused by scale corrosion or product fouling of the internal surfaces. This condition slows transmission and distribution capacity, and can require more than just routine maintenance if it remains unaddressed. Interior corrosion, fouling and leakage in pipeline systems will adversely impact bottom-line operations. ...

  • Electronic water treatment reduces fouling in heat exchangers

    The deposition of material on heat transfer surfaces is called fouling which significantly impacts on the thermal and mechanical performance of heat exchangers. Fouling increases the overall thermal resistance and lowers the overall heat transfer coefficient of heat exchangers as well as impeding fluid flow, accelerating corrosion and increasing pressure drop across the heat ...

  • New life for the artificial leaf?

    Research in laboratories around the world is moving the promise of artificial photosynthesis closer to reality Sandwiched between rows of bottled chemicals and racks of drying glassware on the third floor of Harvard University’s Mallinckrodt laboratory, four thumbnail-size bits of pinstriped silicon hang from a thin ...


    By Ensia

  • Analysing coloured smoke | Pearl or Quest?

    Coloured smoke consists of an aerosol of tiny particles which is combusted or vaporized. The particular pigment or dye of each colour affects the colour of the smoke. The mixture usually includes a cool-burning formula based on potassium chlorate oxidiser, dextrin or lactose as fuel. Then one or more dyes are introduced to account for around half of the mixture. A small amount of sodium ...


    By Specac Limited

  • Noise Measurement

    Definitions Threshold and criterion levels The threshold level is the A-weighted sound level at which a personal noise dosimeter begins to integrate noise into a measured exposure. For example, if the threshold level on a sound level meter is set at 80 decibels (dB), it will capture and integrate into the computation of dose all noise in the employee's hearing zone that equals or exceeds 80 dB. ...


  • Joint action on climate change: Facts and figures

    Ilan Kelman examines the history, overlaps and conflicts between climate change, development and disasters. By the end of 2015, three global policy processes will have set the stage for how the world responds to major challenges facing humanity in the years to come. A voluntary agreement to tackle disasters was reached in ...


    By SciDev.Net

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