electrical conductivity News
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ASTM C1760 - 12 Standard Test Method for Bulk Electrical Conductivity of Hardened Concrete
This test method measures the bulk electrical conductivity of concrete, which has a theoretical relationship to the diffusion coefficient of chloride ion, or other ions, in the concrete (1, 2). Experimental data confirm that there is a correlation between the apparent chloride diffusion coefficient measured by Test Method C1556, or similar method, and the bulk electrical ...
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Gold solution for enhancing nanocrystal electrical conductance
In a development that holds much promise for the future of solar cells made from nanocrystals, and the use of solar energy to produce clean and renewable liquid transportation fuels, researchers with the U.S. Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab) have reported a technique by which the electrical conductivity of nanorod crystals of the semiconductor ...
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International ALUMINIUM Journal - The Importance of Accurate Temperature Measurement for Aluminium Extrusions
The aluminium extrusion industry is undergoing impressive growth and world market forecasts show this is set to continue. Extrusions offer lightweight properties, excellent thermal and electrical conductivity, along with strength and corrosion resistance, making them suitable for a wide range of applications, particularly in the automotive industry where fuel efficiency is crucial. However, ...
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Thiourea in copper electrorefining plants
Copper is the preferred metal in electrical wires, as it is a good electrical conductor. To achieve the high purity required for such electrical wires, copper is purified using electrorefining. For an optimal electrorefining process, thiourea is added to the electrolyte. Polarography offers a reliable and inexpensive monitoring of the thiourea, preventing quality issues caused by wrong thiourea ...
By Metrohm AG
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`Clever clothes` and `Super sight`
This year the National Physical Laboratory (NPL) has two stands, 'Clever clothes' and 'Super sight', at the Royal Society Summer Science Exhibition 2015, the annual display of the most exciting cutting-edge science and technology in the UK, 30 June - 5 July 2015, London. The 'Clever clothes' exhibit features the latest textiles technology that will make us safer, healthier and more productive. ...
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EPA announces recipients of $1.3 million in funding for small business innovation research projects
EPA announced its funding of $1.3 million in investments to 13 Small Business Innovation Research (SBIR) projects. All 13 projects are focused on producing innovative and creative solutions to the country’s current environmental issues. Each company will receive a SBIR Phase I contract for up to $100,000 to develop their green technology. Companies that successfully complete Phase I can ...
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ASTM D1670 / D1670M - 11 Standard Test Method for Failure End Point in Accelerated and Outdoor Weathering of Bituminous Materials
The extent of cracking or pitting of bituminous films is a measure of the extent of deterioration due to weathering. Failure due to cracking is more accurately determined electrically than visually. Failure determined by this test method will depend not only on the characteristics of the bituminous material and the extent of weathering, ...
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ASTM D1670 / D1670M - 11 Standard Test Method for Failure End Point in Accelerated and Outdoor Weathering of Bituminous Materials
The extent of cracking or pitting of bituminous films is a measure of the extent of deterioration due to weathering. Failure due to cracking is more accurately determined electrically than visually. Failure determined by this test method will depend not only on the characteristics of the bituminous material and the extent of weathering, but also on the film thickness, and the amount ...
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Eijkelkamp Soil & Water measures water quality for Dutch Water Board
Eijkelkamp Soil & Water recently installed two measuring buoys in the Berkel river at the request of the Rijn en IJssel Water Board. At the beginning of November, waste water from a factory nearby ended up in the Berkel river due to a breakage in a pressure pipe. Rijn en IJssel Water Board started a major cleaning of the Berkel river. Before, during and after the cleaning, Eijkelkamp Soil ...
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ENVEA launches its new sensor for flow monitoring in thin pipelines
ENVEA presents the FlowJam T, the new sensor for powder flow monitoring in flexible pipelines. Due to its small size, it can be easily mounted around thin hose lines. It can be used for all pipelines made of electrically non-conductive material, such as plastic or rubber, with outside diameters between 4 and 25 mm. The FlowJam T detects all types of solid streams that moves through the ...
By ENVEA
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SURAGUS GmbH is nominated for the JEC Innovation Award Asia 2013
The SURAGUS GmbH has qualified with EddyCus® CF map 6060 for the established JEC Innovation Award Asia 2013. The unique concept of non-destructive testing of carbon fiber materials has convinced the JEC Group jury to nominate us for the coveted 15. JEC Innovation Award Asia 2013. EddyCus® CF map 6060 allows a non-destructive testing of carbon fiber composites, the visualization of their ...
By SURAGUS GmbH
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What is ‘Good’ Water? A Deep Dive on Water Quality
Water quality is determined by the presence of contaminants, physical and chemical factors such as pH and conductivity, and the number of minerals present. Water chemistry begins with a very simple formula – H2O –two hydrogen and one oxygen elements. Pure water is colorless, tasteless, and odorless. What makes water “good” is the lack of impurities. Impurities in ...
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ASTM F1701 - 12 Standard Specification for Unused Rope with Special Electrical Properties
This specification covers the requirements, sizes, construction, tests, and procedures for unused ropes for use by electrical utilities and related industries on energized lines operating at voltages higher than a certain value. Electrical test shall be performed in order to determine the rope's electrical conductivity and resistivity to water. Physical properties such as hardness, diameter, ...
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U.S. EPA orders companies in Visalia, Calif., to protect Mill Creek from polluted wastewater
The U.S. Environmental Protection Agency announced the resolution of a series of enforcement actions for Clean Water Act violations at three manufacturing companies located in Visalia, Calif. The facilities owned by Univar USA, Advanced Food Products, and Milk Specialties Global discharge industrial wastewater to the city’s sanitary sewer system, which eventually flows into Mill Creek. The ...
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Alfa Chemistry Allows Quick Access to Ammonium-Based Ionic Liquids
Over the past decade, ionic liquids have come to the attention of a wider audience. Meanwhile, related research focused on ionic liquids grows daily. In response to the increasing demand for these chemicals, Alfa Chemistry recently announced the launch of a comprehensive line of ammonium-based ionic liquids for both researchers and manufacturers worldwide. The ammonium ionic liquid is a compound ...
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ASTM B768 - 11 standard specification for copper-cobalt-beryllium alloy and copper-nickel-beryllium alloy strip and sheet
This specification establishes the requirements for strips and sheets of copper-cobalt-beryllium and copper-nickel-beryllium alloys with Copper Alloy UNS Nos. C17410, C17450, and C17460. The materials for manufacture shall be cast billets or slabs of such purity and soundness as to be suitable for processing by hot-working, cold-working, and annealing to produce a ...
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Water in lithium ion battery materials - Reliable and precise determination by Karl Fischer titration
Lithium ion batteries are energizing the current mega trend towards electrical mobility. One of the key requirements of lithium ion batteries is that they must be free of water, because water reacts with the conducting salt of the electrolyte. A proven and reliable method to measure the water content in the electrolyte matrix of lithium ion batteries directly is coulometric Karl Fischer ...
By Metrohm AG
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Alfa Chemistry Materials Begins to Supply Carbon fibers for Nanotech Research
Carbon nanotubes are very appealing to researchers to develop novel materials with more favorable features. As a supplier of a wide array of materials, trusted by both industry and academia, Alfa Chemistry Materials further diversifies its product types and announces the offering of carbon fibers earlier this month. The practical use of carbon fibers can be traced back to the 1960s and plenty of ...
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Alfa Chemistry Starts to Offer Mechanically Exfoliated Single Crystal Graphene
As a newly arising supplier of graphene-related products and solutions, Alfa Chemistry recently announces to start to provide mechanically exfoliated single crystal graphenes for customers worldwide. Mechanical exfoliation is a method universally used by manufacturers to achieve large-scale production of graphene. “In the past two decades, mechanical exfoliation has been a unique enabler of ...
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ASTM D5470 - 12 Standard Test Method for Thermal Transmission Properties of Thermally Conductive Electrical Insulation Materials
This standard measures the steady state thermal impedance of electrical insulating materials used to enhance heat transfer in electrical and electronic applications. This standard is especially useful for measuring thermal transmission properties of specimens that are either too thin or have insufficient mechanical stability to allow placement of ...
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