conductivity resistivity Articles
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The fundamental conductivity and resistivity of water
Pure water has a very low. but not quite zero, electrical conductivity. This conductivity provides a probe into fundamental properties of water, including the electrochemical mobility of the hydrogen and hydroxide ions. Deviation from this value is a measure of trace ionic impurities. Ultrapure water (UPW). with impurities at or below the sub-parts-per-billion range, is used extensively in many ...
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FRP cooling tower vs stainless steel cooling tower
FRP, is Fiber-reinforced plastic, it composites by glass fiber and resin. It material feature is light, hard, non-conductive, corrosion-resistant. When FRP products are largely used it along with the waste problem. There will be a question how to solve the waste FRP. Traditional cooling tower is made of FRP. There will be a question how to solve the waste cooling tower. Understand the disposal ...
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Ion-Pair Conductivity Theory V: Critical Ion Size and Range of Ion-Pair Existence
There are two mechanisms by which ion size affects conductivity of liquids: hydrodynamic resistance, and electrostatic attraction between cation and anion that leads to the formation of ion-pairs. Increasing ion size reduces conductivity due to growing hydrodynamic resistance. On the other hand, increasing ion size reduces the probability of ion-pairs formation, which leads to higher ionic ...
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Development of Pd-coated ceramic electrodes in hybrid sulphur cycle
The Hybrid Sulphur (HyS) cycle has attracted much attention as a mass production process for hydrogen. It consists of an electrolysis step and a thermal decomposition one. In order to achieve high efficiency for hydrogen production and operational cost reduction, some developments in electrode materials with high corrosion resistance, high electrical conductivity and low anodic potential is a key ...
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Methods for Removing Signal Noise from Helicopter Electromagnetic Survey Data
A geophysical analysis was conducted over the abandoned T&T subsurface mines and portions of the Muddy and Roaring Creek watersheds in northeastern Preston County, West Virginia. The data were collected using helicopter-borne measurements of frequency-domain electromagnetic (FDEM) conductivity (390, 1555, 6254, 25,800, and 102,680 Hz). Noise was a significant issue in the lowest frequency EM ...
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Gold Fingers PCB
Among the large-scale use of PCI and optical modules and cable sockets, the gold fingers PCB has been divided into: long and short gold fingers, broken gold fingers, split gold fingers, gold finger plates in the process of processing, need to pull gold-plated wire, conventional gold finger processing is relatively simple, the length of the circuit board fingers require strict control of the gold ...
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What Gas Diffusion Layer (GDL) do I use for a Hydrogen Generator (Electrolyzer)?
We've spoken already about Gas Diffusion Layer (GDL) selection for a Fuel Cell; today we will cover some GDL considerations for Electrolyzers. The Hydrogen side (Cathode) of an Electrolyzer (EZ) can be almost any gas diffusion layer GDL (or even no GDL) that you would like and that fits your own mechanical design. This can be common GDL materials like Toray Paper, Sigracet, Freudenberg, AvCarb, ...
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High Thermal Conductive Silicon Pad
High thermal conductive silicone pad is a high thermal conductivity material. The raw material is made of Japan Electrochemical High Thermal Conductive Spherical Alumina Powder and Dow Corning Polymer. It is a cost-effective thermal gap filling material. The surface's natural micro-viscosity and softness can well fill the air gaps to transfer the heat between the heat source and the heat sink to ...
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Brief Instruction of Copper Clad Steel Stranded Wire
The copper-clad strand wire is shaped like a cable ccs, which is made of a plurality of copper-clad single wires. Because of its multi-stranded properties, the electrical conductivity and tensile strength are relatively good, and the product can be customized to enhance the elongation rate by multiple heat treatment in the production process, which has increased the strength and toughness of the ...
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CCS-Stranded Cable
Brief Instruction of Copper Clad Steel Stranded Wire The copper-clad strand wire is shaped like a cable, which is made of a plurality of copper-clad single wires. Because of its multi-stranded properties, the electrical conductivity and tensile strength are relatively good, and the cable copperweld can be customized to enhance the elongation rate by multiple heat treatment in the production ...
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CCS-Stranded Cable
Brief Instruction of Copper Clad Steel Stranded Wire The copper-clad strand wire is shaped like a cable, which is made of a plurality of copper-clad single wires. Because of its multi-stranded properties, the electrical conductivity and tensile strength are relatively good, and the product can be customized to enhance the elongation rate by multiple heat treatment in the production process, which ...
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General Mapping Case Study
This is a collection of various cases where the 2D resistivity imaging method pioneered by Advanced Geosciences Inc have been successfully applied. Click on a section below and you will be shown a full 2D resistivity imaging brochure detailing the case in question. Acknowledgement: These cases have been submitted by satisfied customers whom we thank for permission to publish their data on the ...
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Conductivity Measurement in high purity water samples below 10 microsiems/cm
High Purity Water Resistivity/ Conductivity Measurement Ultra-Pure Water without any chemical impurities will still have a conductivity because of the presence of H* and OH" ions due to the self-ionization of water. Ultra-pure water has a conductivity of 0.055 HSiemens'cm or a resistivity of 18.18 mQ-cm at 25 °C. In order to know the conductivity or resistivity of ultra-pure water it is ...
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General mapping
This is a collection of various cases where the 2D resistivity imaging method pioneered by Advanced Geosciences Inc have been successfully applied. Click on a section below and you will be shown a full 2D resistivity imaging brochure detailing the case in question. Acknowledgement: These cases have been submitted by satisfied customers whom we thank for permission to publish ...
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Climate Control News Featured LQ800 Multi Channel Controller
All-in-one sensor With its highly intelligent web-enabled design, the new LQ800 Multi Channel Controller from Electro-Chemical Devices (ECD) delivers a state-of-the-art total solution. It combines advanced IoT liquid analytical measurement of 50+ parameters and precision process control of flow/level for a wide range of water-based industrial applications. ECD’s hard working LQ800 Multi ...
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Case Study - Lacustrine: Underwater Resistivity Surveys
Lake Travis – Austin, Texas Objective: Locate buried pipeline and map the limestone bedrock surface Site: Lake Travis, near Austin, Texas USA during the AGI Marine Resistivity Seminar Date: May 1, 2014 and May 7, 2015 Instrument: SuperStingR8 WiFi, SwitchBox56, underwater marine cable with 28 electrodes spaced at 6m. Software: EarthImager 2D underwater resistivity inversion model ...
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Identification of Archeological Remnants
Czorsztyn Castle, Poland 2D Electrical Imaging Objective Study area was within the ruins of the 14th century Czorsztyn Castle, located in the boundaries of Pieniny National Park (southern Poland). The main goal of this research was to check if one of the stone wall residues continues under the ground surface. Additionally, an attempt was made to identify other geoelectrical anomalies that may ...
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Southern New Jersey - Guaranteed benzene remediation in soil and groundwater - Case Study
Project Summary TRS Group, Inc. (TRS) under contract with URS Corporation ( URS) and Resource Environmental, LLC (RELLC) conducted an electrical resistance heating (ERH) remediation of benzene at a former gasoline service station located in southern New Jersey, The project scope of work was contracted as a Guaranteed Fixed Price Remediation (GFPR) that included no rebound of benzene in ...
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Oil Analysis Helps Water Plant Cut Annual Maintenance costs by $25,000 - Case study
The city of Chandler (Ariz.) Municipal Utilities Department (MUD) employs coagulation, sedimentation, active flow control and filtration to produce 60 million gal per day (mgd) of water at its surface water treatment plant. In addition, the system includes 27 wells and 21 booster stations controlled by SCADA. Water distribution is provided through more than 1,200 miles of water main, in excess of ...
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Dr. Roddy Tempest and the Ultrameter II™ in Disaster Response
Find out how the Ultrameter II gave Dr. Tempest fast accurate results that let him act quickly and help save the lives of thousands of people. When disaster strikes, people are scared and disorganized. They need resources — safe water and proper sanitation — that aren’t easy to come by in the aftermath. Without the help of humani-tarian organizations to provide assistance, ...
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