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Possibilities of radioisotope measuring in control of an unstable solid particles hydrotransport
PublicationThe 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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Application of ANN and PCA to two-phase flow evaluation using radioisotopes
PublicationIn 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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Estimating the uncertainty of the liquid mass flow using the orifice plate
PublicationThe 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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Improvement of radiotracers experiments in mass transfer processes
PublicationThe 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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Graphene field-effect transistor application for flow sensing
PublicationMicroflow 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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Methods of measurement signal acquisition from the rotational flow meter for frequency analysis
PublicationOne 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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Experimental based determination of SCOP coefficient for ground-water heat pump
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The feasibility and economic efficiency of selective modernization solutions in a singlefamily house located in Siemianice near Słupsk
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Small photovoltaic setup for the air conditioning system
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Evaluation of dampness-induced strength reduction of calcium silicate blocks
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Possibilities of using interlayers during diffusion welding of Ti Gr2 and AISI 316L
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Indicators of recent geodynamic activity in the Książ Castle area (Świebodzice Unit, Sudetes) in the light of structural analysis and geodetic measurements
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Simulation Tests of Working Press Loads under Pre-tensioned Body Conditions
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Utility of an unitary-shredding method to evaluate the conditions and selection of constructional features during grinding
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Research of the Theban limestone: The case of Temple of Hatshepsut in Deir el-Bahari
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Simulations CAE of wood pellet machine
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Measurement and analysis of parameters of the precise grinding system
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Analysis and modeling of variables of the precise shredder’s pneumatic material transport’s system
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The use of CAD applications in the design of shredders for polymers
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Application possibilities of the low-temperature repairs on creep-resistance turbine components from material GX23CrMoV12-1
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Feasibility study of a novel hot stamping process for Ti6Al4V alloy
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Simulation Method for Scheduling Linear Construction Projects Using the Learning– Forgetting Effect
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Removal of organic compounds from natural underground water in sorption and sono-sorption processes on selected activated carbons
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Substance flow analysis for mercury emission in Poland
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The effectiveness of organic matter removal in unit processes of the technological groundwater treatment system
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The anthropogenic pollutants in urban ponds based on the example of Słupsk
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Disinfection of rainwater as a way to their microbiological stability and safe use
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Cost minimization of locating construction machinery park with the use of simulation and optimization algorithms
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The method of strengthening the church building in terms of the planned mining exploitation
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The collusion detection in public procurements – selected methods applied for the road construction industry in Poland
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The profit as in-company evaluation of the construction site effectiveness
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Numerical analysis of settlement of a high-rise building using two constitutive soil models
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Cracking of the Vault in a Church Building and Activities Undertaken in the View of the Further Mining Exploitation
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The methodology of technical due diligence report preparation for an office, residential and industrial buildings
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Cost approach to the flow-shop construction scheduling
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The Conjugated Triangle Method CTM of the detection of inconsistent bids in the construction industry
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Simulation of water turbine integrated with electrical generator
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Efficiency analysis of an energy conversion system for a variable speed small hydropower plant
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Wear of carbide inserts during turning of C45 steel in dry cutting conditions and in presence of emulsion mist
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The application of response surface method to optimization of precision ball end milling
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The Evaluation of Surface Integrity During Machining of Inconel 718 with Various Laser Assistance Strategies
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The analysis of instantaneous tool displacements during precise ball end milling
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Turning process monitoring of internal combustion engine piston’s cylindrical surface
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The study on dynamic properties of monolithic ball end mills with various slenderness
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Experimental evidence about misconception of Terzaghi's 1-D consolidation theory in terms of degree of consolidation
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Large-scale Rowe cell experimental study on coefficient of consolidation of coal mine tailings
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The prototype of a wireless measurement card
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The problem of “spectrum leakage” in the measurement of harmonics
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Searching for new development in areas of the city
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Deep submarine groundwater discharge indicated by pore water chloride anomalies in the Gulf of Gdańsk, southern Baltic Sea
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