stationary analyser Articles

  • Viral Analyses

    Outbreaks of foodbome and waterborne illness have been associated with viruses'*" . The viruses that are typically transmitted by water (via the fecal-oral route) belong to one of the largest groups of viruses called the enteric viruses. At least 140 human enteric virus types are known, including 72 serotypes of enteroviruses, adenoviruses, reoviruses, rotaviruses, norwalk virus, and others*. ...


    By Analytical Services, Inc

  • GC Analyses of Polynuclear Aromatic Hydrocarbons

    Polynuclear aromatic hydrocarbons (PAHs) can be separated by packed column or capillary column gas chromatography. An SPB-5 bonded phase fused silica capillary  column separates the 16 PAHs considered priority pollutants in wastewater by the US Pal SP-301, a liquid crystal stationary phase in packed GC columns, resolves benzo(e)pyrene and benzo(a)pyrene. This publication discusses ...


    By MilliporeSigma

  • Numerical analyses of the hangingwall failure due to sublevel caving: study case

    The sublevel caving used in Kiirunavaara mine induces failure and subsidence of the hangingwall. Two sections of the mine were studied by means of numerical analyses. Numerical models were developed using finite element and discrete element codes. The former was applied to calculate the location of new failure surfaces in the hangingwall and to estimate the break angle when mining advances ...


    By Inderscience Publishers

  • Application of Taguchi's orthogonal array in reducing the NO
    x
    emission of a stationary diesel engine

    The main objective of this investigation is to reduce the NOx emission of a stationary diesel engine with less sacrifice on smoke intensity and brake thermal efficiency (BTE). Fuel injection timing, percentage of EGR and fuel injection pressure are chosen as factors influencing the objective. Three levels were chosen in each factor and design of experiments ...


    By Inderscience Publishers

  • Numerical simulation of fluid flow and heat transfer in a phase change thermal energy storage

    The objective of this work is the study of an industrial process of energy storage which consists in the use of a cylindrical tank filled with encapsulated Phase Change Materials (PCM). A particularity is present in this kind of processes; it concerns the delay of the crystallisation of PCM, called supercooling phenomenon. The development of a 2D porous-medium model for cold storage with coolant ...


    By Inderscience Publishers

  • A Fast Triaxial Shear Device

    The fast triaxial shear device (FTRXD) loads a 1.9-cm (0.75-in.) diameter by 3.8-cm (1.5-in.) long soil specimen, deforming it axially at a very rapid rate. The specimen is deformed by a piston-cylinder assembly driven by compressed nitrogen. Load and displacement at the top of the specimen and load at the bottom are measured; the specimen is subjected to a confining pressure up to 6.9 MPa (1000 ...


    By ASTM International

  • Simulating term structure of interest rates with arbitrary marginals

    Decision models under uncertainty rely their analysis on scenarios of the economic factors. A key economic factor is the term structure of interest rates (yields). Simulation models of the yield curve usually assume that the conjugate distribution of the interest rates is lognormal. Dynamic models, like vector auto-regression, implicitly postulate that the logarithm of the interest rates is ...


    By Inderscience Publishers

  • A sliding mode speed and rotor position estimator for PMSM

    The paper discusses the problem of state estimation for the non-salient permanent magnet synchronous motor (PMSM) and presents a method for estimation of speed and rotor position based on a sliding mode (SM) EMF observer. The observer is developed based on the full order PMSM model in the stationary reference frame. The motor speed is a required input in the proposed observer and a speed estimate ...


    By Inderscience Publishers

  • The development of cation-exchange chromatography in free amino acids analysis

    Although it was not called a liquid chromatograph, the first such instrument was introduced in late 1959 by Beckman Instruments and was designated the M.S. Amino Acid Analyzer in honour of Moore and Stein. Inject valves had yet to be invented, the buffer switching valves were glass stopcocks and the column temperature was controlled by circulating water baths. Two positive displacement pumps ...


    By Pickering Laboratories, Inc.

  • `Revising Louisiana State Air Quality Modeling Guidance for the Incorporation of AERMOD,` presented at the 2006 A&WMA annual conference

    Abstract For over two decades, the Industrial Source Complex (ISC) dispersion model has been the primary model used to predict ambient air impacts from stationary sources. Recent advances in dispersion modeling theory have resulted in the creation of a new type of modeling algorithm referred to as the American Meteorological Society/U.S. Environmental Protection Agency Regulatory Modeling ...


    By Trinity Consultants

  • Unmanned remote and wireless CDM monitoring case study

    Remote and wireless monitoring technology to meet CDM requirements is in its infancy in Europe. Carbon trading is driving it globally, especially in North and South America. That experience and technology is now finding a demand in Europe and Asia in landfill, biogas from food and animal waste in digesters and water treatment sludge digestion. Methane recovery from landfill and anaerobic ...


    By Geotech

  • Dry regenerable sorbents for the separation and capture of CO2 from large point sources

    The combustion of fossil fuels generates large quantities of carbon dioxide (CO2), a greenhouse gas most likely to influence global warming and climate change. Large stationary sources that include coal-based electric generating stations are plausible targets for the removal of CO2. Chemical absorption of CO2 is viewed as one option that could be applicable ...


    By Inderscience Publishers

  • Capture of carbon dioxide from flue gas using solid regenerable sorbents

    Carbon dioxide emissions from the combustion of fossil fuels are a significant factor in global climate change. Large stationary sources such as coal-fired electric generating plants are likely to be the most cost-effective targets for carbon dioxide capture. At present, liquid amine-based scrubbing systems are the only processes available for this application. Processes based on regenerable ...


    By Inderscience Publishers

  • The Gasmet story from an academic idea to a global business

    In this article, Dr Petri Jaakkola, founder and Chairman of Gasmet Technologies Oy explains how an idea shared by a group of researchers at the University of Oulu in Finland, during the early 1970s, developed into one of the world’s leading gas monitoring instrumentation manufacturers. Early history – technology development At first, the Finnish researchers understood ...


    By Gasmet Technologies Oy

  • Determining pesticides in dietary supplements with QuEChERS extraction, cartridge SPE, and GCxGC-TOFMS

    Regulatory requirements are driving the development of new multiresidue pesticide methods for dietary supplements. Minimizing matrix interference is critical for data accuracy. The novel approach employed here combines QuEChERS extraction, cartridge SPE cleanup, and GCxGC-TOFMS analysis, and results in good recoveries across a range of compounds found in these complex matrices. ...


    By Restek Corporation

  • Trends and projections in the EU ETS in 2015

    The European Union (EU) Emission Trading System (ETS) covers about 45% of the EU's total greenhouse gas (GHG) emissions. GHG emissions from the installations included in the ETS decreased by 24% between 2005 and 2014. The emission level reached in 2014 was the lowest since 2005, when the system was launched. It was also lower than the 21% reduction target for the year 2020. Between 2013 and 2014, ...

  • Urban Air Quality Forum to Focus on Environmental Impacts of Fuel Choices in Developing Countries

    When chemist Miriam Lev-On, Ph.D., recently visited Agra, India, she toured the region and viewed the grandeur of the Taj Mahal—the 17th Century mausoleum that is one of the world's most celebrated monuments. But as memorable as the Taj Mahal ...


  • Case Study - Plains All American Pipeline Company (Plains)

    Principal Client Services: CEQA/NEPA Air Quality Water Quality Toxic Materials Mitigation Measure Implementation Permitting E2 has provided environmental consulting services to Plains All American Pipeline Company (Plains) and predecessors Pacific Energy Partners and ARCO Pipeline for over a decade. Activities have covered broad areas from ...


    By E2 ManageTech

  • Air Dispersion Models - Models can be used to aid in demonstrating environmental compliance, analyzing process changes and evaluating the impacts of accidental releases

    Air dispersion models are used to estimate the downwind concentration of pollutants emitted by various pollution sources such as industrial facilities and regional public traffic. Dispersion models play an important role in the industrial and regulatory communities. They are typically used to demonstrate compliance with National Ambient Air Quality Standards as part of new source review, ...


    By Trinity Consultants

  • Engineers torque technology to medics

    Medical experts and sports scientists are becoming increasingly reliant on engineers as their disciplines become more and more technical. Mark Ingham looks at some of the projects his company, Sensor Technology, has helped behind the scenes. Like most rugby players I took my knees for granted until the day a twisting fall resulted in a torn anterior cruciate ligament. Fortunately these days it ...


    By Sensor Technology Ltd

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