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Search results for: WATER URBANISM
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ANALYSIS OF THE LOAD-CARRYING CAPACITY OF A HYDRODYNAMIC WATER-LUBRICATED BEARING IN A HYDROELECTRIC POwER PLANT
PublicationThe paper presents an analysis of the load-carrying capacity of a historic hydrodynamic water-lubricated radial bearing of an unconventional segment design installed in the Braniewo Hydroelectric Power Plant. The aim of the calculations was to determine whether the bearing operates in the conditions of hydrodynamic or mixed lubrication, as well as to establish the optimal geometry of the axial grooves allowing for the highest load-carrying...
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Molecular dynamics study on the role of solvation water in the adsorption of hyperactive AFP to the ice surface
PublicationUsing computer simulations, the early stages of the adsorption of the CfAFP molecule to the ice surface were analyzed. We found that the ice and the protein interact at least as early as when the protein is about 1 nm away from the ice surface. These interactions are mediated by interfacial solvation water and are possible thanks to the structural ordering of the solvent. This ordering leads to positional preference of the protein...
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Influence of main design parameters of ship propeller shaft water-lubricated bearings on their properties
PublicationW artykule omówiono wpływ głównych parametrów konstrukcyjnych i eksploatacyjnych takich jak wielkość luzu łożyskowego, własności materiału panwi, stanu powierzchni skojarzenia ślizgowego oraz temperatury i zasolenia wody na nośność hydrodynamiczną łożyska okrętowego wału śrubowego smarowanego wodą.
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Possibility of increasing precipitation water retention in agglomerations based on example from Warsaw experience.
PublicationHydrologia miejska, problem retencji wody w warun kach aglomeracji. Zagrożenia wynikające z kontynuacji tradycyjnego kanalizowania. Problemy warszawskie, strategia polityki w zakresie zagospodarowania wód opadowych, pozytywne i negatywne doświadczenia. Szczególne znaczenie Potoku Służewieckiego (zlewnia rzeki Wilanówki). Przyjmowane rozwiązania, w tym zbiorniki rurowe (GRP).
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Influence of local bush wear on properties of water lubricated marine stern tube bearings
PublicationW artykule przedstawiono propozycję metody obliczania łożysk ślizgowych smarowanych cieczą o niskiej lepkości (wodą) w których doszło do lokalnego zużycia panwi. Proponowana metoda uwzględnia sprężystą deformację panwi (model EHL) oraz zmianę geometrii będącą wynikiem zużycia.
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Influence of surface roughness topography on properties of water lubricated polymer bearings, experimental research
PublicationW artykule przedstawiono wyniki badań eksperymentalnych, których celem było zidentyfikowanie wpływu ułożenia chropowatości na powierzchni ślizgowej łożyska smarowanego wodą z polimerową panwią. Badania wykazały, że wpływ ten jest mniejszy niż oczekiwano a na własności łożyska ma wpływ głównie wysokość chropowatości.
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Advanced Oxidation Processes for Degradation of Water Pollutants—Ambivalent Impact of Carbonate Species: A Review
PublicationAdvanced oxidation processes (AOPs) hold great promise in the removal of organic contaminants. Reactive oxygen species (ROS) produced in AOPs react with target pollutants to initially form several intermediate compounds that finally undergo complete mineralization. Such observations are reported, especially for laboratory-scale experiments performed in pure water. On the other hand, while considering real contaminated wastewater...
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Hydrogen-enhanced stress corrosion cracking and corrosion fatigue of HSLA steels in sea-water
PublicationPrzedstawiono ocenę podatności stali o wysokiej wytrzymałości na naprężeniowe pękanie korozyjne i zmęczenie korozyjne wspomagane przez wodór. Wykonano próby powolnego rozciągania i zmęczenia niskoczęstotliwościowego na stalach 17HMBVA i 14HNMBCu oraz ich złączach spawanych, w środowisku wody morskiej, przy polaryzacji katodowej. Zamieszczono wyniki badań elektrochemicznych oraz przełomów na skaningowym mikroskopie elektronowym.
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Investigations of hydraulic jump configured by a two phase air water jetimpinging on a flat plate.
PublicationPrzedstawiono wyniki badań eksperymentalnych uskoku hydraulicznego powstającego przy napływie strugi uderzającej na powierzchnię płaskiej płyty.
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(Vapour and liquid) equilibrium in (N,N-dimethylacetamide+methanol+water) at the temperature 313.15 K.
PublicationPraca zawiera wyniki pomiarów całkowitej prężności pary dla tytułowego układu trójskładnikowego oraz dla ''składowych'' układów binarnych. Wyniki obliczeń nadmiarowej energii swobodnej mieszania dla układów (N,N-dimetyloaceta-mid+woda) i (N,N-dimetyloacetamid+metanol) porównane zostały z rezultatami uzyskanymi wcześniej dla innych układów (amid+metanol) oraz (amid+woda). Znaleziono interesującą zależność wartości nadmiaru...
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The effect of mixed anionic-cationic films composition on flotation of hydrocarbon particles from water
PublicationBadano adsorpcję dodecylosulfonianu sodowego oraz jednego z bromków alkilo-trimetyloamoniowych z roztworów ich mieszanin na granicach faz woda/powietrze oraz woda/dodekan. Obliczone stężenia powierzchniowe poszczególnych surfaktantów wykorzystano do wyznaczenia składu filmów adsorpcyjnych. Skład filmów anionowo-kationowych był podstawą do przewidywania zmian ładunku elektrostatycznego kropli dodekanu oraz efektywności flotacji...
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Experimental investigations on water sorptivity in mortars with the use of X-ray micro-CT system.
PublicationW pracy doswiadczalnej zbadano zjawisko sorpcji wody w pryzmatycznych próbkach zapraw, które jest ściśle powiązane z trwałością materiału. Sorpcyjność oceniana na etapie ustalonym w połączeniu z warunkami zewnętrznymi może być wykorzystana do przewidywania okresu użytkowania. Sorpcyjność początkową i wtórną wody w próbkach zapraw nienasyconych zmierzono w badaniach laboratoryjnych zgodnie z normą amerykańską ASTM C 1585–04. Wpływ...
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Recent Issues and Challenges in the Study of Inland Waters
PublicationThis paper addresses several important problems and methods related to studies of inland waters based on the existing scientific literature. The use of UAVs in freshwater monitoring is described, including recent contact and non-contact solutions. Due to a decline in biological diversity in many parts of the globe, the main threats are described together with a modern method for algae and cyanobacteria monitoring utilizing chlorophyll...
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Affective Learning Manifesto – 10 Years Later
PublicationIn 2004 a group of affective computing researchers proclaimed a manifesto of affective learning that outlined the prospects and white spots of research at that time. Ten years passed by and affective computing developed many methods and tools for tracking human emotional states as well as models for affective systems construction. There are multiple examples of affective methods applications in Intelligent Tutoring Systems (ITS)....
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Influence of dissolved organic nitrogen on surface waters
PublicationThe aim of this study was to determine the susceptibility of dissolved organic nitrogen (DON) contained in biologically treated wastewater disposed from municipal wastewater treatment plants (WWTPs) to biodegradability and bioavailability in a water environment. Additionally an evaluation was performed of the participation of this organic nitrogen fraction, including bioavailable DON (bDON), in the nitrogen balance for the Baltic...
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Multi-stage magnetic-fluid seals for operating in water - life test procedure, test stand and research results. Part II Results of life tests of multi-stage magnetic - fluid seal operating in water
PublicationThe edge criteria for magnetic-fluid seals durability research were described in previous article [24] and now the tests results are presented. The tests were made with three magnetic fluids using various magnets quantity in magnetic assemblies. If values obtained in the repeated test deviated by more than 10 % from results of the first test an additional control test was made for final characteristics. The characteristics are:...
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From structures to landscapes – towards re-conceptualization of the urban condition
PublicationThis paper presents an original approach towards the phenomena of re-naturalization of cities and indicates its possible consequences for the urban design and planning strategies. It focuses on the ongoing shift “from structures to landscapes” in understanding urban conditions. While modern architecture introduced geomet-ric compositions against the background of nature, early modern theories of architects and sociologists started...
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Organic Rankine cycle turbogenerator cooling – Optimization of the generator water jacket heat exchange surface
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New Insight on Water Status in Germinating Brassica napus Seeds in Relation to Priming-Improved Germination
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Water Needs of Sweet Cherry Trees in the Light of Predicted Climate Warming in the Bydgoszcz Region, Poland
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Effect of Forecast Climate Changes on Water Needs of Giant Miscanthus Cultivated in the Kuyavia Region in Poland
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Tris(ferrocenylmethidene)sumanene: synthesis, photophysical properties and applications for efficient caesium cation recognition in water
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In-situ oxidative degradation of sulfamethoxazole by calcium peroxide/persulfate dual oxidant system in water and soil
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Natural and anthropogenic influences on ice formation on various water bodies of the Silesian Upland (southern Poland)
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The Correlation between Physical Crosslinking and Water-Soluble Drug Release from Chitosan-Based Microparticles
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Determination of carbamazepine in urine and water samples using amino-functionalized metal–organic framework as sorbent
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Effect of ultrasound treatment on water holding properties and microstructure of beef (m. semimembranosus) during ageing
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Application of a smartphone based spectrophotometer for rapid in-field determination of nitrite and chlorine in environmental water samples
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Peculiar hydrogen bonding behaviour of water molecules inside the aqueous nanochannels of lyotropic liquid crystals
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Wheat bread enriched with raspberry and strawberry oilcakes: effects on proximate composition, texture and water properties
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Long-term Hindcast Simulation of Currents, Sea Level, Water Temperature and Salinity in the Baltic Sea
PublicationThis dataset contains the results of numerical modelling of currents, sea level, water temperature and salinity over a period of 50 years (1958–2007) in the Baltic Sea. A long-term hindcast simulation was performed using a three-dimensional hydrodynamic model (PM3D) based on the Princeton Ocean Model (POM). The spatial resolution was 3 nautical miles, i.e. about 5.5 km. Currents, water temperature, and salinity were recorded...
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RAILWAY WATER TOWERS OF WESTERN POLAND – HISTORIC NETWORKED ARCHITECTURAL RESOURCE AND ITS TYPOLOGICAL STRUCTURE
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Template-based textural modifications of polymeric graphitic carbon nitrides towards waste water treatment
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Effect of housing geometry on the performance of Chemcatcher passive sampler for the monitoring of hydrophobic organic pollutants in water
PublicationZaprojektowano nową obudowę próbnika typu Chemcatcher, tzw. próbnik typu Chemcatcher drugiej generacji. Większość badań kalibracyjnych przeprowadzono stosując próbnik typu Chemcatcher pierwszej generacji. Dlatego zbadano wpływ obudowy próbnika typu Chemcatcher na jego działanie.
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Optimizing Control by Robustly Feasible Model Predictive Control and Application to Drinking Water Distribution Systems
PublicationThe paper considers optimizing Model Predictive Control (MPC) for nonlinear plants with output constraints under uncertainties. Although the MPC technology can handle the constraints in the model by solving constraint model based optimization task, satisfying the plant output constraints still remains a challenge. The paper proposes Robustly Feasible MPC (RFMPC), which achieves feasibility of the outputs in the controlled plant....
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Effect of crystalline emulsifier composition on structural transformations of water-in-oil emulsions: Emulsification and quiescent conditions
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Some remarks on the pore water pressure dissipation patterns from the one-dimensional consolidation test
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Stability of texture, meltability and water mobility model of pizza-style cheeses from goat's milk
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Evaluation of water turbine hydrodynamic thrust bearing performance on the basis of thermoelastohydrodynamic calculations and operational data
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Multi-sensor monitoring of the corrosion rate and the assessment of the efficiency of a corrosion inhibitor in utility water installations
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Identifying Surface Runoff Pathways for Cost-Effective Mitigation of Pollutant Inputs to Drinking Water Reservoir
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Application of physicochemical data for water-quality assessment of watercourses in the Gdansk Municipality (South Baltic coast)
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Biofiltration using C. fluminea for E.coli removal from water: Comparison with ozonation and photocatalytic oxidation
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Some remarks on the pore water pressure dissipation patterns from the one-dimensional consolidation test
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A Climatic water balance variability during the growing season in Poland in the context of modern climate change
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Fabrication of ILs-Assisted AgTaO3 Nanoparticles for the Water Splitting Reaction: The Effect of ILs on Morphology and Photoactivity
PublicationThe design of an active, stable and ecient photocatalyst that is able to be used for hydrogen production is of great interest nowadays. Therefore, four methods of AgTaO3 perovskite synthesis, such as hydrothermal, solvothermal, sol-gel and solid state reactions, were proposed in this study to identify the one with the highest hydrogen generation eciency by the water splitting reaction. The comprehensive results clearly show that...
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Investigation of tetrabutylammonium bromide-glycerol-based deep eutectic solvents and their mixtures with water by spectroscopic techniques
PublicationDeep eutectic solvents (DES) are formed by an acceptor and a donor of hydrogen bonds. They are generally considered as a possible alternative to hazardous organic solvents in various fields. Very recently they have also appeared in analytical chemistry, used mainly for the separation of analytes before instrumental quantification. For the development of new extraction procedures, it is important, among other things, to understand...
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Lead In drinking water: Adsorption method and role of zeolitic imidazolate frameworks for its remediation: A review
PublicationDue to various characteristics properties lead(II) metal is utilized in many applications like lead ion batteries, water pipes, ammunition and paints. For this reason, concentration of lead(II) ions in water is increasing days by days which is alarming for water pollution. Water pollution is a major problem worldwide which affects biosphere badly, and causes continuous reduction of accessible sources of fresh water and ground water, available...
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Pore Water Pressure Development in Soft Soil due to Installation and Loading of Controlled Modulus Columns
PublicationExcess pore water pressure (EPWP) development and decay due to the installation and static loading tests of controlled modulus columns (CMC) in soft soil was measured with piezometers equipped with low air entry (LAE) filters and a piezocone (CPTU) equipped with a high air entry (HAE) filter. The HAE filter allows for detailed detection of EPWP in short time intervals during construction of CMC. The influence zone due to the installation...
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Superhydrophobic sponges based on green deep eutectic solvents for spill oil removal from water
PublicationThe paper described a new method for crude oil-water separation by means of superhydrophobic melamine sponges impregnated by deep eutectic solvents (MS-DES). Due to the numerous potential of two-component DES formation, simple and quick screening of 156 non-ionic deep eutectic solvents using COSMO-RS (Conductor-like Screening Model for Real Solvents) computational model was used. DES which were characterized by high solubility...