conductivity indicator Articles

  • Molecular dynamics simulations of breaking metallic nanowires

    In the present work, we have reviewed the importance of conductance histograms as an experimental tool able to address the statistical behaviour of the electronic transport through metallic nanowires. We have described how molecular dynamics techniques combined with embedded-atom method (EAM) are able to reproduce the general features noticed during metallic nanowire breaking experiments. We have ...


    By Inderscience Publishers

  • 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 ...


    By Inderscience Publishers

  • Evaluating the performance of top African banks using Data Envelopment Analysis

    The major aim of this research is to measure the relative efficiency of the top 100 African banks. The sensitivity of the results is also investigated. Data Envelopment Analysis (DEA) method was used to evaluate the relative efficiency of African banks. Cross-sectional data for the year 2005 were used to conduct the analysis. The results indicate that the performance of several banks is ...


    By Inderscience Publishers

  • Toxicity of major cations and anions (Na+, K+, Ca2+, Cl−, and SO 42−) to a macrophyte and an alga

    In many freshwater systems around the world, the concentrations of major ions (Na+, K+, Ca2+, Mg2+, Cl−, HCO 3−, CO 32−, and SO 42−) are exhibiting increasing trends, approaching the concentrations historically found mainly in estuaries. The objectives of the present study were to determine at what concentrations these salts are toxic to an aquatic plant and a green alga, to investigate two ...


    By John Wiley & Sons, Ltd.

  • Study on the value of real-time reporting

    A recent independent study conducted by the Aberdeen Group indicates that businesses using real-time performance reporting (like the reporting functionality included in the Intelex EQH&S Management Systems) realize greater success in relation to equipment effectiveness, production yield, and profit margins.According to Matthew Littlefield, a senior researcher at Aberdeen Group, “best-in-class ...


    By Intelex Technologies Inc.

  • Assessing the management of innovation with software tools: an application of innovationEnterprizer

    This paper presents an NPD managerial decision-making software system: innovationEnterprizer. Furthermore, the paper reports on the application of the system at a major European parts supplier to the German automotive industry which was carried out during September 2004. Ten facilitated sessions were conducted with managers. The main results indicated that the project team (human and integration ...


    By Inderscience Publishers

  • Critical concentration of ion-pairs formation in nonpolar media

    It is known that nonpolar liquids can be ionized by adding surfactants, either ionic or nonionic. Surfactant molecules serve as solvating agents, building inverse micelles around ions, and preventing their association back into neutral molecules. According to the Bjerrum-Onsager-Fuoss theory, these inverse micelle ions should form "ion pairs." This, in turn, leads to nonlinear dependence of the ...


    By Dispersion Technology Inc.

  • Ultrasound enhanced heterogeneous activation of peroxymonosulfate by a Co-NiOx catalyst

    Sulfate radical-based advanced oxidation processes have had considerable attention due to the highly oxidizing function of sulfate radicals (SO4·) resulting in acceleration of organic pollutants degradation in aqueous environments. A Co-Ni mixed oxide nanocatalyst, which was prepared by the sol-gel method, was employed to activate peroxymonosulfate (PMS, ...


    By IWA Publishing

  • The water and energy nexus

    The water and energy nexus The interdependence between water and energy has been more widely recognized during the last few years. In the USA, the Energy-Water Nexus initiative was initiated in 2004 as an informal DOE (Department of Energy) National Laboratory project to develop a better understanding of the link between the nation’s energy and water supplies. The ...


    By IWA Publishing

  • Decentralized wastewater treatment system & desludging service for Hin Heup Town A GRET MIREP Pilot Project in Laos

    The French NGO GRET, established in 1976, has a mission of fair international development, through designing and implementing field projects, providing expertise, conducting research, and running information and exchange networks for development issues, and currently works in 27 countries. As part of this mission, GRET professionals have taken on various water and sanitation ...


    By IWA Publishing

  • Assessing the convergence of LHS Monte Carlo simulations of wastewater treatment models

    Monte Carlo (MC) simulation appears to be the only currently adopted tool to estimate global sensitivities and uncertainties in wastewater treatment modelling. Such models are highly complex, dynamic and non-linear, requiring long computation times, especially in the scope of MC simulation, due to the large number of simulations usually required. However, no stopping rule to decide on the number ...


    By IWA Publishing

  • Layered double hydroxide (LDH)-coated attapulgite for phosphate removal from aqueous solution

    In this study, a composite adsorbent, layered double hydroxide (LDH)-coated attapulgite (LDH-AP), was synthesized and characterized. Its potential application for LDH stabilizer and phosphate (P) removal from aqueous solution was evaluated using the batch mode and continuous mode in a packed bed column. The batch experiments revealed that the data of P adsorption onto LDH-AP could be well ...


    By IWA Publishing

  • Electrical conductivity as a state indicator for the start-up period of anaerobic fixed-bed reactors

    The aim of this work was to analyse the applicability of electrical conductivity sensors for on-line monitoring the start-up period of an anaerobic fixed-bed reactor. The evolution of bicarbonate concentration and methane production rate was analysed. Strong linear relationships between electrical conductivity and both bicarbonate concentration and methane production rate were observed. ...


    By IWA Publishing

  • Case Study: Museum Square - 5670 Wilshire Blvd.

    On October 13th, 2002, a large water supply line ruptured on the 6th floor of this 22-story office building. Water inundated five floors, soaking carpet, wallboard and ceiling materials. The building owner contacted Ellis immediately. Using moisture meters, Ellis first identified the extent of water damage. We then retained a contractor to strip away wet materials, dry interior wall spaces, ...

  • Tracer studies on an aerated lagoon

    The city of Palmerston North, New Zealand, has two aerated lagoons as its secondary treatment facility. Interest about treatment efficiency led to an investigation into the hydraulics in the second lagoon to determine if further optimisation was viable. A tracer study using rhodamine WT was undertaken to ascertain the stimulus response output. Samples were also taken at 24 points within the ...


    By IWA Publishing

  • Decentralized wastewater treatment systems for a college, village, and primary school BORDA-LIRE DEWATS Projects in Laos

    The Bremen Overseas Research and Development Agency (BORDA) has a mission to improve the living conditions of disadvantaged communities and to preserve the environment through decentralized sanitation projects. As part of this mission, the Agency has developed modular, decentralized, and cost-effective wastewater treatment service packages that they have termed ...


    By IWA Publishing

  • Evolution of water-in-oil emulsion controlled by droplet-bulk ion exchange: acoustic, electroacoustic, conductivity and image analysis

    Water-in-kerosene emulsion stabilized with SPAN surfactant exhibits a slow transition (on scale of hours) from an emulsion to a mini-emulsion state. We continuously monitor this transition in the relatively concentrated samples (5 vol.% water), without dilution, using acoustic, electroacoustic and conductivity measurements. Continuous stirring prevents sedimentation. We confirm our ...


    By Dispersion Technology Inc.

  • Small domestic wastewater treatment using waste materials

    Phosphorus pollution of groundwater from small wastewater system is often considered as a major threat for aquatic habitats. Recirculating biofilters are often used to treat small wastewater systems without significant removal of phosphorus. In this paper, a low-cost waste material (dried alum residual) in pre-treated effluents from recirculating biofilters was examined. Two different types of ...


    By Inderscience Publishers

  • 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 ...


    By Dispersion Technology Inc.

  • An evaluation of e-banking and m-banking adoption factors and preference in Malaysia: a case study

    This study aims to investigate the factors influencing adoption of electronic banking (e banking) and mobile banking (m-banking) and to identify customer preferences in choosing either e-banking or m-banking when conducting transactions. The findings from 184 customers indicate that perceived usefulness, perceived ease of use, convenience, computer efficacy, device features and security influence ...


    By Inderscience Publishers

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