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EPJ Web of Conferences

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2100-014X

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Year 2023
  • A new approach to β-decays studies impacting nuclear physics and astrophysics: The PANDORA setup
    Publication
    • D. Mascali
    • D. Santonocito
    • M. M. Busso
    • L. Celona
    • A. Galatà
    • M. La Cognata
    • G. S. Mauro
    • A. Mengoni
    • E. Naselli
    • F. Odorici... and 5 others

    - EPJ Web of Conferences - Year 2023

    Theory predicts that lifetimes of β-radionuclides can change dramatically as a function of their ionization state. Experiments performed in Storage Rings on highly ionized atom have proven nuclei can change their beta decay lifetime up to several orders of magnitude. The PANDORA (Plasmas for Astrophysics, Nuclear Decay Observation and Radiation for Archaeometry) experiment is now conceived to measure, for the first time, nuclear...

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Year 2019
Year 2018
  • Evaluation of the structures size in the liquid-gas flow by gamma-ray absorption
    Publication
    • M. Zych
    • R. Hanus
    • M. Jaszczur
    • D. Świsulski
    • L. Petryka
    • P. Jodłowski
    • P. Zych

    - EPJ Web of Conferences - Year 2018

    The rapid development of tomography methods particularly electrical, X and gamma rays allows for a wide range of the information about flow structure. However, all of such methods are quite complicated. At the same time much simpler systems as the measuring system of gamma rays absorption, allows to obtain a all key flow information which describe the two-phase flow. In the article the results of analyzes of radiometric signal...

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  • Radioisotope measurement of selected parameters of liquid-gas flow using single detector system
    Publication

    - EPJ Web of Conferences - Year 2018

    To determine the parameters of two-phase flows using radioisotopes, usually two detectors are used. Knowing the distance between them, the velocity of the dispersed phase is calculated based on time delay estimation. Such a measurement system requires the use of two gamma-ray sealed sources. But in some situations it is also possible to determine velocity of dispersed phase using only one scintillation probe and one gamma-ray source....

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  • Radioisotope measurements of the liquid-gas flow in the horizontal pipeline using phase method
    Publication

    - EPJ Web of Conferences - Year 2018

    The paper presents application of the gamma-absorption method to a two-phase liquid-gas flow investigation in a horizontal pipeline. The water-air mixture was examined by a set of two Am-241 radioactive sources and two NaI(Tl) scintillation probes. For analysis of the electrical signals obtained from detectors the cross-spectral density function (CSDF) was applied. Results of the gas phase average velocity measurements for CSDF...

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Year 2017
  • Application of ANN and PCA to two-phase flow evaluation using radioisotopes
    Publication

    - EPJ Web of Conferences - Year 2017

    In the two-phase flow measurements a method involving the absorption of gamma radiation can be applied among others. Analysis of the signals from the scintillation probes can be used to determine the number of flow parameters and to recognize flow structure. Three types of flow regimes as plug, bubble, and transitional plug – bubble flows were considered in this work. The article shows how features of the signals in the time and...

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  • Comparative study of operation of condensing and traditional boilers equipped with the ORC module for electricity generation
    Publication

    - EPJ Web of Conferences - Year 2017

    Condensing technology applied to boilers is to make full use of thermal energy contained in the fuel. That means that additionaly the heat from condensation of exhaust gases can be used for the purposes of heating the domestic hot water and to cover the demand for central heating. The study analyzed the operation of the "traditional" boiler equipped with the ORC module as the similar arrangement but with the condensing boiler....

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  • Estimating the uncertainty of the liquid mass flow using the orifice plate
    Publication

    - EPJ Web of Conferences - Year 2017

    The article presents estimation of measurement uncertainty of a liquid mass flow using the orifice plate. This subject is essential because of the widespread use of this type of flow meters, which renders not only the quantitative estimation but also qualitative results of this type so those measurements are important. To achieve this goal, the authors of the paper propose to use the theory of uncertainty. The article shows the...

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  • Graphene field-effect transistor application for flow sensing
    Publication

    - EPJ Web of Conferences - Year 2017

    Microflow sensors offer great potential for applications in microfluidics and lab-on-a-chip systems. However, thermal-based sensors, which are commonly used in modern flow sensing technology, are mainly made of materials with positive temperature coefficients (PTC) and suffer from a self-heating effect and slow response time. Therefore, the design of novel devices and careful selection of materials are required to improve the overall...

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  • Improvement of radiotracers experiments in mass transfer processes
    Publication

    - EPJ Web of Conferences - Year 2017

    The greatest part of industrial mass transfer is based on continuous transportation of different substances throughout especially constructed installations. In that kind of practice, a flow of such mass in each part determines the process unit and can be described by the residence time distribution (RTD) of the substance inside this unit. This parameter may be evaluated by the properly arranged tracer experiment. It is worthwhile...

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  • Methods of measurement signal acquisition from the rotational flow meter for frequency analysis
    Publication

    - EPJ Web of Conferences - Year 2017

    One of the simplest and commonly used instruments for measuring the flow of homogeneous substances is the rotational flow meter. The main part of such a device is a rotor (vane or screw) rotating at a speed which is the function of the fluid or gas flow rate. A pulse signal with a frequency proportional to the speed of the rotor is obtained at the sensor output. For measurements in dynamic conditions, a variable interval between...

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Year 2016
  • Air flow phenomena in the model of the blind drift
    Publication

    - EPJ Web of Conferences - Year 2016

    In the presented paper, Particle Image Velocimetry (PIV) has been used to investigate flow pattern and turbulent structure in the model of blind drift. The presented model exist in mining, and has been analyzed to resolve ventilation issues. Blind region is particularly susceptible to unsafe methane accumulation. The measurement system allows us to evaluate all components of the velocity vector in channel cross-section simultaneously....

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  • Possibilities of radioisotope measuring in control of an unstable solid particles hydrotransport
    Publication

    - EPJ Web of Conferences - Year 2016

    The paper presents γ-radiation proposal to control a multiphase flow, independently from circumstances. So this method may be applied even in compound industrial or environmental processes. Moreover in many cases, it is the only method for applications for dense mixture containing coarse angular grains. The constructed equipment allows continuous measurement of density as well as solid phase for both concentration and average velocity....

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Year 2015

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