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  • Determination of hydrocarbon composition in high

    2020-12-2 · Comparison of low voltage electron ionization and field ionization mass spectra of coal-derived liquids from the Wilsonville pilot plant. Fuel Processing Technology 1990,26 (3),181-195.

  • Analysis and significance of mineral matter in coal

    2002-5-1 · Mode of occurrence of detrital and authigenic minerals in coal and tonstein, as seen using optical and electron microscopy. (A) Clay-rich laminae (dark colour) of probable detrital origin in coal polished section (field width 1.4 mm). (B) Pelletal texture in a tonstein associated with coal, Bowen Basin, Australia (field width 1.4 mm).

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  • On the compositional analysis of Coal using

    2019-2-12 · The qualitative analyses of the Coal samples (Reference Coal and Thar Coal) were also carried out using a one-meter linear time of flight mass spectrometer (LA-TOF-MS), details about this equipment have been described elsewhere [29, 30]. In figure 6, we present the laser ablation time of flight mass spectrum of the Reference Coal sample.

  • An Experimental Study on Wetting of Coal Dust by

    AbstractIntroductionMaterials and MethodsResults and AnalysisConclusionsAcknowledgmentsSurfactants can improve the wetting performance of the dust-reduction spraying water, thus improving the dust-reduction effect by spray. In this study, the performance of surfactant solution in wetting coal dust was investigated through experiments. In addition, the effects of surfactant type, mass fraction, metamorphic degree of coal, particle size, and additives were investigated. According to the results of surface tension experiments, the surface tension of the solution decreased with the increase of the con
  • Energy Journal Elsevier

    2021-5-28 · CiteScore: 2020: 9.9 CiteScore measures the average citations received per peer-reviewed document published in this title. CiteScore values are based on citation counts in a range of four years (e.g. 2016-2019) to peer-reviewed documents (articles, reviews, conference papers, data papers and book chapters) published in the same four calendar years, divided by the number of these documents

  • Rare earth elements: A review of applications,

    2019-7-1 · This is because the REE concentrations in many coals or coal ashes are equal to or higher than those found in conventional REE ores. For example, in coal samples from the Mazino Coal Mine, Tabas Coalfield, Iran, ΣREE range of 16.4–184 μg/g with average of 88.9 μg/g (Pazand, 2015). In a recent study, Sahadev et al. (2018) Dai et al., 2016).

  • The effect of NaOH pretreatment on coal structure

    2020-4-15 · Biogenic CBM is an important component of detected CBM, which is formed by coal biodegradation and can be regenerated by anaerobic microorganisms. One of the rate-limiting factors for microbial degradation is the bioavailability of coal molecules, especially for anthracite which is more condense and has higher aromaticity compared with low-rank coal. In this paper, NaOH solution with

  • Frequency Distribution of the pH of Coal-Mine Drainage

    2001-7-9 · The pH of coal-mine drainage in Pennsylvania has a bimodal frequency distribution, with modes at pH 2.5 to 4 (acidic) and pH 6 to 7 (near neutral). Although iron-disulfide and calcareous minerals comprise only a few percent, or less, of the coal

  • Trace Elements in Coal Gangue: A Review IntechOpen

    2017-12-20 · Coal gangue is one of the largest industrial residues. It has high ash content, low carbonaceous content, and heating value. Meanwhile, it has some trace elements. Large quantities of coal gangue cause serious environmental problems by polluting the air, water, and soil as well as occupying a tremendous amount of land. Now, coal

  • MineLoc — Personnel Tracking System for Longwall

    2015-1-1 · MineLoc – Personnel Tracking System for Longwall Coal Mining Sites Andreas Fink ∗,Helmut Beikirch ∗ ∗Department of Computer Science and Electrical Engineering, Rostock University, Rostock, Germany (e-mail: ) Abstract: The localization of people and objects in indoor environments is an ongoing research

  • Hydrothermal Growth of Hierarchical Ni3S2 and

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  • Ion-Exchange Chromatography and Its Applications

    2013-4-10 · 1.1. Ion exchange mechanism. Ion-exchange chromatography which is designed specifically for the separation of differently charged or ionizable compounds comprises from mobile and stationary phases similar to other forms of column based liquid chromatography techniques [9-11].Mobil phases consist an aqueous buffer system into which the mixture to be resolved.

  • Two-equation eddy-viscosity turbulence models for

    2021-2-10 · Computer Physics Communications, Vol. 264 Effect of Mach number and plate thickness on the flow field and heat transfer characteristics of supersonic turbulent flow over a flat plate at different thermal boundary conditions. Numerical modelling of oxy-coal combustion to access the influence of swirl strength, combustion environment and

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  • An approach to the use of fixed carbon-volatile matter

    1986-1-1 · A typical field for brown coal lies within the k value range 0.67-1.50 (VM^ values 40 to 60%), where lignites have A+M (ballast) values ranging from 40 to 70% and with class numbers according to the ISO classifi- cation of brown coals and lignites7, from 3 to 6 (corresponding total moisture content of run-of-mine coals on the ash free basis is

  • Base case and perturbation scenarios (Technical

    1998-10-1 · @article{osti_3845, title = {Base case and perturbation scenarios}, author = {Edmunds, T}, abstractNote = {This report describes fourteen energy factors that could affect electricity markets in the future (demand, process, source mix, etc.). These fourteen factors are believed to have the most influence on the State's energy environment. A base case, or most probable, characterization is given

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  • Limits for qualitative detection and quantitative

    2021-3-11 · Establishing Meaningful Limits of Detection for Ion-Selective Electrodes and Other Nonlinear Sensors. ACS Sensors 2020, 5 (1),250-257. Mobility of Aqueous and Colloidal Neptunium Species in Field Lysimeter Experiments. Environmental Science & Technology 2018, 52 (4) ,

  • Ion-Exchange Chromatography and Its Applications

    2013-4-10 · 1.1. Ion exchange mechanism. Ion-exchange chromatography which is designed specifically for the separation of differently charged or ionizable compounds comprises from mobile and stationary phases similar to other forms of column based liquid chromatography techniques [9-11].Mobil phases consist an aqueous buffer system into which the mixture to be resolved.

  • 7.6 Applications of Electrostatics University Physics

    2021-5-11 · Ink Jet Printers and Electrostatic Painting. The ink jet printer, commonly used to print computer-generated text and graphics, also employs electrostatics.A nozzle makes a fine spray of tiny ink droplets, which are then given an electrostatic charge (Figure 7.44).Once charged, the droplets can be directed, using pairs of charged plates, with great precision to form letters and images on paper.

  • A review of technologies for manganese removal from

    2016-3-1 · A comprehensive approach has been followed to discuss all significant work done in this field to date, and a final evaluation has been made to conclude on the most efficient technique to remove manganese ions. 2.1. Precipitation. Chemical precipitation is a very efficient and widely used method for heavy metals from various wastewaters.

  • Applied Materials Semiconductor, Display and Solar

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  • Malvern Panalytical Material Analysis and Biophysical

    World leading suppliers of analytical instrumentation. Malvern Panalytical are experts in material analysis and biophysical characterization technology.

  • Base case and perturbation scenarios (Technical

    1998-10-1 · @article{osti_3845, title = {Base case and perturbation scenarios}, author = {Edmunds, T}, abstractNote = {This report describes fourteen energy factors that could affect electricity markets in the future (demand, process, source mix, etc.). These fourteen factors are believed to have the most influence on the State's energy environment. A base case, or most probable, characterization is given

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    2018-7-18 · Promoting excellence in the field of electron devices for the benefit of humanity. Mission Statement To foster professional growth of its members by satisfying their needs for easy access to and exchange of tech-nical information, publishing, education, and technical recognition and enhancing public visibility in the field of Electron Devices.

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  • Postemergence Tall Fescue (Festuca arundinacea) Control

    I Letters following this symbol are a WSSA-approved computer code from Composite List of Weeds, Revised 1989. Available only on computer disk from WSSA, 810 East 10th Street, Lawrence, KS 66044-8897. nomic losses due to the tall fescue endophyte have been estimated to be between $500 million and $1 billion an-nually in the U.S. (Ball et al. 1993).