conductivity analysis Articles | Environmental XPRT

Researchers are Advancing Science Using Micro Pulse LiDAR Technology

There are so many examples of interesting research using Micro Pulse LiDAR (MPL) technology it is difficult to decide on my favorites; however, I have chosen to highlight the following two papers because these applications for the MPL and MiniMPL address problems that are very important to global health. ...

Nov. 5, 2018

By Micro Pulse LiDAR, part of Hexagon

Geophysical applications to solid waste analysis

Abstract: Case studies of regional landfills show that electromagnetic geophysical methods can accurately and inexpensively define boundaries and thickness of waste. Degradation of putrescible solid waste generates conductive leachate that can be imaged with a frequency-domain terrain conductivity meter. Terrain conductivity measurements can be modified through a simple algorithm based upon ...

Dec. 18, 2016

By Geonics Limited

Electrokinetics - Technology Overview

Electrokinetics separates and extracts contaminants from saturated or unsaturated soils, sludges and sediments, and groundwater. The goal of electrokinetic remediation is to effect the migration of subsurface contaminants in an imposed electric field via electroosmosis, electromigration and/or electrophoresis. These phenomena occur when the soil is electrically charged with a low voltage current. ...

Dec. 31, 1996

By Groundwater Remediation Technologies Analysis Center

Automated Titration Analysis Enhances Productivity - White Paper

Multi-Parameter Analysis and Enhanced Productivity by the Consolidation of Inorganic Wet Chemistry Methods Summary Multi-tasking and time allocations are key components to running an efficient laboratory and decreasing the cost per analysis for pH, conductivity, alkalinity, chloride, fluoride and ammonia. The cost of analysis has risen over the years while ...

Oct. 17, 2017

By MANTECH Inc.

The state of environmental education in Polish and Czech universities

An appropriate university education is necessary to improve our environment. In consideration of this, an analysis of the syllabi of the Polish and Czech universities, focusing on the topics of environmental management and the protection of nature, was conducted by the International Graduate School IHI Zittau's Faculty of Business Administration. The results of this analysis can be compared with ...

Jan. 29, 2004

By Inderscience Publishers

Multi-Parameter Analysis and Enhanced Productivity by the Consolidation of Inorganic Wet Chemistry Methods

Summary Multi-tasking and time allocations are key components to running an efficient laboratory and decreasing the cost per analysis for pH, conductivity, alkalinity, chloride, fluoride and ammonia. The cost of analysis has risen over the years while revenue from these parameters has remained the same. Much of the high cost is due to the use of multiple instruments, multiple ...

Oct. 17, 2017

By MANTECH Inc.

Nano-characterisation of dielectric breakdown in the various advanced gate stack MOSFETs

Nano-scale physical analysis of breakdown in nano-scale high-κ gate stacks consisting of either polycrystalline-silicon or metal as gate electrode shows that the microstructural defects and damages induced by breakdown in the high-κ gate dielectric are different from that of conventional SiOxNy/poly-Si and Si3N4/poly-Si gate stacks. Chemical analysis using transmission electron microscopy ...

Jun. 5, 2007

By Inderscience Publishers

Analysis of conduction mechanism in silicon nitride–based RRAM

The conduction mechanism in Ti/Si3N4/p–Si memory stack is described. In order to analyse the conduction mechanism, we have measured the I–V characteristics in voltage sweep mode and performed I–V curve fitting. The temperature dependence in Ti/Si3N4/p–Si ...

Mar. 16, 2014

By Inderscience Publishers

Analysis of Hydraulic Gradient Effects for Laboratory Hydraulic Conductivity Testing

A theoretical model is presented that characterizes the effect of hydraulic gradient on measured hydraulic conductivity in the laboratory. A closed-form equation is derived for the distribution of total head within a hydraulic conductivity test specimen as a function of specimen height, boundary stress conditions, compression index, and change of hydraulic conductivity index. From this ...

May 31, 1996

By ASTM International

Should your company be conducting life cycle analyses?

Many companies have already answered yes to that question – for a combination of reasons typically related to stakeholder interest, key customer demands, public perception, and competitive positioning. In fact, life cycle analysis (LCA) has increasingly become an important tool in mature corporate sustainability programs, providing organizations with a consistent methodology for ...

Oct. 4, 2010

By Trinity Consultants

Aerodynamic instability of cable-supported bridges considering the initial deformed shape due to dead loads

The aerodynamic instability of cable-supported bridges is studied, with due account taken of the initial deformed shape of the bridge due to the dead loads. The two-node catenary cable element is adopted to model the non-linear behaviours of cables with sags of various magnitudes. Self-excited wind loads are expressed in terms of flutter derivatives. The aerodynamic instability analysis is ...

Dec. 3, 2009

By Inderscience Publishers

The Role of Decision Making Software in Effective Selection of Project Alternatives

ABSTRACTConducting an alternative analysis study for a public works project can be a difficult process considering that the alternative selected for design and construction must be fully embraced by the project owners and the public. A successful study can position the project for successful implementation and broad public support, while a poor study can create uncertainty for the project. The ...

Oct. 21, 2006

By Water Environment Federation (WEF)

Electrical properties of biogenic material: bilirubin rich gallstone

The electrical properties of Bilirubin Rich Gallstone (BGS) were investigated by the Complex Impedance Spectroscopy (CIS) technique. The dielectric relaxation was found to be of non-Debye type. Evidences of temperature-dependent electrical relaxation phenomena as well as Negative Temperature Coefficient of Resistance (NTCR) character of the sample have been observed. The ac conductivity obeys the ...

Jan. 27, 2008

By Inderscience Publishers

Overview of the systems of systems engineering methodology

There is no widely accepted approach to conducting system of systems engineering (SoSE) efforts. The SoSE methodology is a rigorous engineering analysis that invests heavily in the understanding and framing of the problem under study. By conducting a rigorous engineering analysis of the problem and its associated context, the SoSE methodology minimises the chance that a Type III error may be ...

Jun. 2, 2011

By Inderscience Publishers

Identification of indispensable components for a better drinking water quality management: Tunis case of study

In order to reduce the number of operations for the assessment of potable water treatment, principal component analysis and hierarchical clustering are applied to large databases of raw and treated water of three treatment plants with various processes. It appears that the measurements can be divided into three clear groups, with a correlation higher than 0.8. The first contains salinity, ...

Aug. 23, 2017

By IWA Publishing

A review of groundwater in islands using SWOT analysis

This paper has focused and reviewed the groundwater of 55 islands around the world using Strength, Weakness, Opportunities and Threats (SWOT) analyses selected based on existing literatures and studies conducted. The SWOT analysis output fills in the gap of scientific knowledge and helps in groundwater management. The overall of groundwater management in islands should be conducted by the highest ...

Feb. 25, 2010

By Inderscience Publishers

Horizontal Wells - Technology Overview

Horizontal well technology has been incorporated into many current environmental remediation applications (and associated contaminants), such as in situ bioremediation, air sparging, vacuum extraction, soil flushing, free product recovery, etc. Ac cording to information reviewed, this technology is most applicable to sites with relatively shallow soil and/or groundwater contamination, and can ...

Dec. 31, 1995

By Groundwater Remediation Technologies Analysis Center

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 ...

Feb. 29, 2004

By Springer

Determining Bentonite Content in Soil-Bentonite Mixtures Using Electrical Conductivity

A procedure based on electrical conductivity is described for measuring bentonite content in soil-bentonite mixtures having a wide range of bentonite contents. Standard equipment used for sedimentation analysis and an electrical conductivity meter are required. The procedure employs calibration curves relating electrical conductivity and bentonite concentration for soil-bentonite-water slurries. ...

Feb. 29, 1996

By ASTM International

A simple Cellular Automaton algorithm to optimise heat transfer in complex configurations

The aim of this study is to propose a method for constructing a conductive paths topology in a 2D area-to-point and points-to-points problem. We focus here on heat conduction, with the goal of decreasing the temperature differences across a domain. We propose a method using a Cellular Automaton (CA) to reshape an initial topology by a thermal gradients attraction-repulsion mechanism. The ...

Dec. 1, 2009

By Inderscience Publishers

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