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Search results for: WEF
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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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Municipality’s financial potencial and policy of flood risk management in Poland
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Preliminary research on adaptability of municipalities in the sub-basin of Nysa Kłodzka using multidimensional comparative analysis
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Analysis of the application of selected physico-chemical methods in eliminating odor nuisance of municipal facilities
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Odour nuisance assessment of the food industry wastewater treatment plant
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Influence of the variability of the odour emission rate on its impact range: a case study of the selected industrial source
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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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Effect of meteorological conditions on odour emission at biogas plants processing municipal waste – pilot research
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The effectiveness of the mechanical treatment of municipal waste using the example of a selected installation
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MCORD - MPD Cosmic Ray Detector a new features
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Environmental impact assessment of municipal biogas plants – case study
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The evaluation of the surface quality after laser cutting
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Heat transfer in fluidized and fixed beds of adsorption chillers
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Analysis of heat transfer in a coated bed of an adsorption chiller
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Distribution of gaseous and particle-bound Hg concentrations at the sites representative for urban and non-urban zones of Silesia Province
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Modeling of a re-heat two-stage adsorption chiller by AI approach
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Possibility of use adsorption chillers for increase efficiency in conventional power plant
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The influence of adsorption chillers on CHP power plants
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Integration adsorption chillers with conventional power plant
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Integration of adsorption chillers with combined cycle gas turbine
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Progress in design of adsorption refrigeration systems. Evaporators
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Application of the nanoindentation method in assessing of properties of cement composites modified with silica-magnetite nanostructures
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The control system of the yeast drying process
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Effect of basalt powder addition on properties of mortar
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Air flow phenomena in the model of the blind drift
PublicationIn 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
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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A role of an Enterprise Identification Card in a building process of water tourist investments
PublicationAn essential element of a building process for water tourist investments in Poland is a document called the Enterprise Identification Card. It is required for the investments, which are classified according to the Regulation [1] as the ones that could potentially impact the environment. It is assumed that KIP is there to protect the environment against the excessive human interference and it just provides the guidelines regarding...
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Proposed method for estimating the costs of safety barrier life cycle
PublicationToday barrier types are frequently selected for their price with little regard for the total costs the structure will incur over its lifetime. One of the basic tools designed to manage road infrastructure is the life cycle cost method (LCC, Life cycle cost). It sums up the costs to plan, design, build, operate (use and maintain) and decommission a road structure. Having developed dynamically at the turn of the century the method...
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Effects of safety barrier life cycle cost factors - identification and analysis
PublicationThe costs borne by road infrastructure authorities for managing and maintaining road devices such as safety barriers may be very high. This has prompted the need for identifying and analysing in detail all factors that influence the costs of safety barriers throughout their service life. To meet that need, the authors used international experience and field data collected under the LifeRoSE project to define the cost structure...
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Analysis of the possibilities in railways shape assessing using GNSS mobile measurements
PublicationIn recent years, a dynamic development of satellite positioning techniques using both static and mobile GNSS coordinates register mode can be observed. In addition, still developing Real-time GNSS Networks, post-processing algorithms and another measurement signal analysis algorithms, make the satellite measurements increasingly used in railway industry sector. In the article the possibilities which follows from the mobile satellite...
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Accuracy analysis of 3D model obtained by photogrammetric method on the example of historic room from Wisłoujście Fortress
PublicationThe article presents a comparison of obtained models of a test object. Close range photogrammetry was used to obtain 3D models. As test object was used one of the rooms located in Wisłoujście Fortress in Gdańsk, Poland. Different models were obtained by using different distribution and number of reference points. Article contains analysis of differences between coordinates of control points obtained from total station measurements...
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Risk Diagnosis and Management with BBN for Civil Engineering Projects during Construction and Operation
PublicationThe authors demonstrate how expert knowledge about the construction and operation phases combined with monitoring data can be utilized for the diagnosis and management of risks typical to large civil engineering projects. The methodology chosen for estimating the probabilities of risk elements is known as Bayesian Belief Networks (BBN). Using a BBN model one can keep on updating the risk event probabilities as the new evidence...
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Dimethyl ether (DME) as potential environmental friendly fuel
PublicationIn recent years, there has been a growing interest in replacing petroleum fuels with so-called second generation environmental friendly fuels. Compared to traditional petroleum fuels dimethyl ether (DME) could be used as a clean high-efficiency compression ignition fuel with reduced particulate matter (PM), sulfur oxides (SOx), hydrocarbons (HC), carbon monoxide (CO) as well as combustion noise. Compared to some of the other leading...
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Dynamic tests of composite footbridge segment – experimental and numerical studies
PublicationExperimental dynamic tests and numerical simulations of a 3 meters long segment of a footbridge made of polymer composites are presented in the paper. The span-length is reduced, however dimensions of cross-section are the same as the target footbridge. The segment structure is made of sandwich panels, which consist of fibre reinforced polymer (GFRP) laminates (skins) and a PET foam (core). The first part of the paper contains...
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Purification of model biogas from toluene using deep eutectic solvents
PublicationBiogas from landfills and wastewater treatment facilities typically contain a wide range of volatile organic compounds (VOCs), that can cause severe operational problems when biogas is used as fuel. Among the contaminants commonly occur aromatic compounds, i.e. benzene, ethylbenzene, toluene and xylenes (BTEX). In order to remove BTEX from biogas, different processes can be used. A promising process for VOCs removal is their absorption...
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Signals features extraction in radioisotope liquid-gas flow measurements using wavelet analysis
PublicationKnowledge of the structure of a flow is significant for the proper conduct of a number of industrial processes. In this case, a description of a two-phase flow regimes is possible by use of the time-series analysis in time, frequency and state-space domain. In this article the Discrete Wavelet Transform (DWT) is applied for analysis of signals obtained for water-air flow using gamma ray absorption. The presented method was illustrated...