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Oral antibiotic therapy improves fat absorption in cystic fibrosis patients with small intestine bacterial overgrowth
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Effectiveness of various types of coating materials applied in reinforced concrete exposed to freeze–thaw cycles and chlorides
PublikacjaThis study assesses the durability of coated and uncoated concrete surfaces protected with four different coating materials: water-soluble (BW), solvent-based (BR), mineral (MI), and epoxy (EP). The durability assessment includes evaluating the absorption rate of water, pull-off adhesion strength, and coating material thickness. Concrete samples were subjected to immersion in regular water and a 7% urea solution, followed by...
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The feasibility of growing highbush blueberry (V. corymbosum L.) on loamy calcic soil with the use of organic substrates
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Numerical Verification of Tests on the Influence of the Imposed Thermal Cycles on the Structure and Properties of the S700MC Heat-Affected Zone
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High yield synthesis and preliminary spectroscopic study of mono-N-alkylated cyclen derivatives of salicylic acid
PublikacjaW artykule przedstawiono reakcję bezpośredniego alkilowania cyklenu bromopochodnymi kwasu salicylowego. Otrzymane związki wykorzystano do badań spektroskopowych. Stwierdzono, że tworzą one wybiórczo kompleksy z jonami metali grupy II. Wyznaczono stałe tworzących się kompleksów.
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Effectiveness of various types of coating materials applied in reinforced concrete exposed to freeze–thaw cycles and chlorides
PublikacjaThis study assesses the durability of coated and uncoated concrete surfaces protected with four Different coating materials: water-soluble (BW), solvent-based (BR), mineral (MI), and epoxy (EP). The durability assessment includes evaluating the absorption rate of water, pull-of adhesion strength, and coating material thickness. Concrete samples were subjected to immersion in regular water and a 7% urea solution, followed by cyclic...
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Calculation of the standard potentials of the dithiocarbamate/thiuram disulfide redox system via thermochemical cycles and computational electrochemistry .
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Analysis of concrete behaviour under cycling within coupled elasto-plastic-damage with non-local softening
PublikacjaArtykuł omawia wyniki symulacji zachowania sie elementów betonowych poddanych cyklicznemu obciążeniu. Do symulacji zastosowano 3 połączone modele sprężysto-plastyczne z degradacją sztywności i z nielokalnym osłabieniem. Wyniki symulacji porównano z doświadczeniami laboratoryjnymi..
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Electrical performance measurement of reference and SOFC with LSCNT layer fueled by H2 and 20ppm H2S/biogas mixture at 750 C - cyclic measurements (12h per cycle)
Dane BadawczeThe dataset contains the electrical IV measurements collected during the cyclic measurements of H2S poisoning in DIR-SOFC with/-out LSCNT layer. The H2S poisoning and H2 regenrating cycles were 12 h each. The spectra were collected every 10 min.
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Application of microturbines in CHP systems with reciprocating engines
PublikacjaThe analysis was carried out for Combined Heat and Power generation systems with micro-turbines power plants working on heat rejected from the reciprocating engine. The calculations were performed for GE Jerbacher engines of J320 GS- C05, J320 GS- C25 and J416 GS- B05 types. We considered different working media (both wet and dry fluids): water, ammonia, ethanol, methanol, methylacetylene (propyne), dimethyloether, sulphur dioxide,...
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Cyclic voltammetry curves of the V2O5 nanorods (Na-ion batteries)
Dane BadawczeThe DataSet contains the next thirty cycles voltammetry curves for the V2O5 nanorods obtained by the sol-gel method. The cyclic voltammetry was measured using the AUTOLAB 302N potentiostat-galvanostat. The measurements were carried out in a voltage range of 2 V to 4 V vs. Na/Na+ at a scan rate of 1 mV/s. As an electrolyte 1M NaPF6 was applied.
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Cyclic voltammetry curves of the V2O5 nanorods (Li-ion batteries)
Dane BadawczeThe DataSet contains the next thirty cycles voltammetry curves for the V2O5 nanocrystals obtained by the sol-gel method. The cyclic voltammetry was measured using the AUTOLAB 302N potentiostat-galvanostat. The measurements were carried out in a voltage range of 2 V to 4 V vs. Li/Li+ at a scan rate of 1 mV/s. The results show that in the subsequent cycles,...
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Cyclic voltammetry curves of the V2O5 nanocrystals (Na-ion batteries)
Dane BadawczeThe DataSet contains the next thirty cycles voltammetry curves for the V2O5 nanocrystals obtained by the sol-gel method. The cyclic voltammetry was measured using the AUTOLAB 302N potentiostat-galvanostat. The measurements were carried out in a voltage range of 2 V to 4 V vs. Na/Na+ at a scan rate of 1 mV/s. As an electrolyte 1M NaPF6 was applied.
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Cyclic voltammetry curves of the V2O5 nanocrystals (Li-ion batteries)
Dane BadawczeThe DataSet contains the next thirty cycles voltammetry curves for the V2O5 nanocrystals obtained by the sol-gel method. The cyclic voltammetry was measured using the AUTOLAB 302N potentiostat-galvanostat. The measurements were carried out in a voltage range of 2 V to 4 V vs. Li/Li+ at a scan rate of 1 mV/s. The results show that in the subsequent cycles,...
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Non-dimensional thermodynamic criterion for selection of dry working fluid for organic Rankine cycle
PublikacjaW pracy przedstawiono bezwymiarowe kryterium termodynamiczne do selekcji suchych czynników roboczych dla organicznego obiegu Rankina, które umożliwia wstępną selekcję potencjalnych czynników.
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Simulation research on the tool cycle in automated manufacturing system at selected tool duplication levels
PublikacjaThe paper presents results of the research concerning impact of applied tool exchange rule on the efficiency of an automated manufacturing system. The research consider the tool duplication levels that constrain realisation of a manufacturing process. Presented study was based on the real industrial system data. The operating of the investigated system of manufacture, including tools necessary for its realisation, was modelled...
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Thermal-hydraulic issues of flow boiling and condensation in organic Rankine cycle heat exchangers
PublikacjaW pracy przedstawiono szereg zagadnień cieplno-przepływowych podczas wrzenia i kondensacji w przepływie w wymiennikach ciepła obiegu ORC. Uwzględniono przemiany fazowe. Analizowano zagadnienia stabilności pracy wymienników oraz ich dynamikę
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Analytical method for calculation of heat source temperature drop for the Organic Rankine Cycle application
PublikacjaIn the paper presented are considerations on the cooperation of the limited capacity heat source with the Organic Rankine Cycle unit. Usually the heat source providing thermal energy to the Organic Rankine Cycle (ORC) may have twofold characteristics. It can be in the form of a single phase fluid, i.e. as hot exhaust gas or hot liquid, or in some cases it may be available as a phase changing fluid, as for example, technological...
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Mechanochemical Energy Transduction during the Main Rotary Step in the Synthesis Cycle of F1-ATPase
PublikacjaF1-ATPase is a highly efficient molecular motor that can synthesize ATP driven by a mechanical torque. Its ability to function reversibly in either direction requires tight mechanochemical coupling between the catalytic domain and the rotating central shaft, as well as temporal control of substrate binding and product release. Despite great efforts and significant progress, the molecular details of this synchronized and fine-tuned...
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Determination of heat transfer coefficient in evaporator of the organic Rankine cycle using the Wilson method.
PublikacjaW pracy zastosowano metodę Wilsona do wyznaczania współczynnika przejmowania ciepła. Przedmiotem rozważań jest płytowy wymiennik ciepła pracujący jako parownik w laboratoryjnym stanowisku realizującym obieg ORC. Wykorzystana metoda jest metodą wydajną w przypadku wymienników ciepła o złożonej geometrii i dużej liczbie kanałów, dla których pomiar temperatury ścianki jest niemożliwy, a przez to określenie współczynników przejmowania...
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Economic Aspects of Algae Biomass Harvesting for Industrial Purposes. The Life-Cycle Assessment of the Product
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Life Cycle Analysis of Ecological Impacts of an Offshore and a Land-Based Wind Power Plant
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Design and thermodynamic and thermoeconomic analysis of an organic Rankine cycle for naval surface ship applications
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Evaluation of the efficiency of the duty cycle of refuse collection vehicle based on real-world data
PublikacjaIn this paper a method of the efficiency evaluation of the duty cycle of Refuse Collection Vehicle is presented. Using real world data, two representative duty cycles were analysed. Total cycle efficiency was calculated, as well as the efficiency of particular cycle phases. Then, energy needed to collect and compact the waste and energy from fuel were compared. Measured and calculated values were shown on the diagrams illustrating...
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A concept of zero-dimensional and three-dimensional thermodynamic modelling of steam storage in a steam cycle
PublikacjaThis work presents the thermodynamic model of steam storage in a steam cycle. The innovative steam storage is an integral part of the unit and thus responds quickly to changes in load. This enhances the primary control reserve while maintaining high efficiency of energy conversion. With regard to power plants, it improves the operational safety of generation units, as it prevents boiler and turbines overload in the case of steep...
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Sewage sludge co-pyrolysis with agricultural/forest residues: A comparative life-cycle assessment
PublikacjaThis study aims to determine the sustainability and energy efficiency of co-pyrolysis scenarios as treatment processes for municipal sewage sludge through a life cycle assessment (LCA). In addition, sensitivity and energy recovery analyses are conducted to determine the possible methods for optimizing the co-pyrolysis process from a circular bioeconomy perspective. Corncob and wood residue have been selected as potential co-feed...
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The new concept of capillary forces aided evaporator for application in domestic organic rankine cycle
PublikacjaThis paper presents studies on the possibility of applying capillary forces induced in the porous structure to a modern design of evaporator. The potential application of such heat exchanger is for example an evaporator of the domestic micro combined heat and power (CHP) unit. One of the problems in the micro-CHP is excessive demand for pumping power. The proposed design helps in overcoming that issue. In the evaporator outlined...
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Spectral criterion for high-cycle fatigue of metals under multiaxial static and stochastic loading.
PublikacjaPraca dotyczy oceny zmęczenia metali ciągliwych w złożonych stanach wieloosiowych obciążeń statycznych i dynamicznych, przy założeniu, że składowe naprężenia są stacjonarnymi procesami stochastycznymi, które są stacjonarnie skorelowane i różniczkowalne w sensie średniokwadratowym. Przyjmując, że wartości średnie i gęstości widmowe mocy tych procesów są znane, sformułowano kryterium ograniczonej trwałości zmęczeniowej w dziedzinie...
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Wyznaczanie cykli cieplnych przy spawaniu pod wodą metodą lokalnej komory suchej.
PublikacjaW pracy przedstawiono metodę pomiaru spawalniczych cykli cieplnych przy spawaniu pod wodą metodą lokalnej komory suchej. Praca zawiera informacje dotyczące metod spawania pod wodą, stanowiska badawczego i pomiarowego oraz wyniki badań wstępnych.
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High-cycle fatique criterion for anisotropic metals under multiaxial constant and periodic loads
PublikacjaPrzedmiotem rozważań jest okresowe naprężenie, którego kartezjańskie składowe są dane w postaci szeregów Fouriera. Dla uwzględnienia wpływu składowych stałych zastosowano zmodyfikowaną formułę Soderberga. Zdefiniowano naprężenie równoważne o synchronicznych składowych i sformułowano kryterium ograniczonej trwałości zmęczeniowej. Kryterium to obejmuje warunki wytrzymałości statycznej i bezpieczeństwa zmęczeniowego z zakresie wysokocyklowym...
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Spectral criterion for high-cycle fatigue of anisotropic metals under multiaxial random loads
PublikacjaPraca dotyczy oceny ograniczonej trwałości zmęczeniowej metali ciągliwych, poddanych wieloosiowym obciążeniom statycznym i dynamicznym. Zakłada się, że kartezjańskie składowe tensora naprężenia są sumą losowych wartości średnich o znanych drugich momentach statystycznych i stacjonarnych procesów stochastycznych o znanych gęstościach widmowych mocy. Przyjmując, że procesy te są stacjonarnie skorelowane, różniczkowalne w sensie średnio-kwadratowym...
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Investigations into Exhaust Particulate Emissions from Multiple Vehicle Types Running on Two Chassis Dynamometer Driving Cycles
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Body fat, energy balance and estradiol levels: a study based on hormonal profiles from complete menstrual cycles
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Numerical Simulation and Experimental Analysis of Thermal Cycles and Phase Transformation Behavior of Laser-Welded Advanced Multiphase Steel
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Clean gas technologies - towards zero-emission repowering of Pomerania.
PublikacjaThe main aim this work is to show the different thermodynamic cycles which improve efficiency and/or decrease emission like: Cheng cycle, Szewalski cycle, LOTHECO cycle, hybrid pSOFC/GT cycle, inverse Brayton cycle, low-emission cycle and zero-emission cycle. For that purpose, cycles and results of analysis are first studied and, secondly, new concept is presented. The role of coupled analysis 0D and 3D in cycle’s devices is also...
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Short-term Cultivation of Porcine Cumulus Cells Influences the Cyclin-dependent Kinase 4 (Cdk4) and Connexin 43 (Cx43) Protein Expression—A Real-time Cell Proliferation Approach
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Fatigue of titanium alloy Ti6Al4V with diamond structure obtained by Laser Power Bed Fusion method
PublikacjaThis paper presents the results of fatigue tests conducted on Ti6Al4V titanium alloy with diamond structure obtained by the Laser Power Bed Fusion method. Samples used in tests were printed with porosities: 81%, 73%, 50%, 34% and near-zero porosity. Samples were subjected to cyclic tests with a constant stress amplitude. The number of cycles until sample failure was registered. Obtained fatigue test results made it possible to...
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THE COST ANALYSIS OF CORROSION PROTECTION SOLUTIONS FOR STEEL COMPONENTS IN TERMS OF THE OBJECT LIFE CYCLE COST
PublikacjaSteel materials, due to their numerous advantages - high availability, easiness of processing and possibility of almost any shaping are commonly applied in construction for carrying out basic carrier systems and auxiliary structures. However, the major disadvantage of this material is its high corrosion susceptibility, which depends strictly on the local conditions of the facility and the applied type of corrosion protection system....
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Experimental tests and numerical simulations of full scale composite sandwich segment of a foot- and cycle- bridge
PublikacjaIn the paper experimental tests and numerical simulations of a full cross-section segment of ultimately designed foot-and cycle-bridge are presented. The experimental tests were conducted on element with length reduced to 3 m and unchanged (target) cross-section dimensions. The external skin of structure is GFRP laminate while internal core is PET foam. Several quasi-static tests were performed using hydraulic cylinder to generate...
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Investigations of Ammonia Emissions from Euro 5 Passenger Cars Over a Legislative Driving Cycle
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Modulation of cellular response to anticancer treatment by caffeine:inhibition of cell cycle checkpoints, DNA repair and more
PublikacjaKofeina i inne metyloksantyny wywołują bardzo różne efekty fizjologiczne w organizmie człowieka. W pracy przedstawiamy, które z tych efektów mogą wpływać na skuteczność terapii przeciwnowotworowych. Kofeina może bezpośrednio wpływać na transport oraz aktywację metaboliczną cząsteczek leków do komórki, poprzez tworzenie kompleksów z lekami zawierającymi układy poliaromatyczne. Kofeina hamuje aktywność kinaz ATM/ATR co prowadzi do...
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Effects of flavonoids on expression of genes involved in cell cycle regulation and DNA replication in human fibroblasts
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Process Monitoring in Heavy Duty Drilling Rigs—Data Acquisition System and Cycle Identification Algorithms
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Organic Rankine cycle turbogenerator cooling – Optimization of the generator water jacket heat exchange surface
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Temperament and ovarian reproductive hormones in women: Evidence from a study during the entire menstrual cycle
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Thermodynamic Analysis of a Closed-Cycle Ocean Thermal Energy Conversion Power Plant for Offshore Platforms
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PARAMETRIC ANALYSIS OF THE EFFICIENCY OF THE COMBINED GAS-STEAM TURBINE UNIT OF A HYBRID CYCLE FOR THE FPSO VESSEL
PublikacjaA thermal diagram of the combined gas‒steam turbine unit of a hybrid cycle, which is an energy complex consisting of a base gas turbine engine with a steam turbine heat recovery circuit and a steam-injected gas turbine operating with overexpansion, is proposed. A mathematical model of a power plant has been developed, taking into consideration the features of thermodynamic processes of simple, binary, and steam-injected...
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Conversion of waste biomass into activated carbon and evaluation of environmental consequences using life cycle assessment
PublikacjaIn this article, activated carbon was produced from Lantana camara and olive trees by H3PO4 chemical activation. The prepared activated carbons were analyzed by characterizations such as scanning electron microscopy, energy-dispersive X-ray spectroscopy, Brunauer–Emmett–Teller, X-ray diffraction, thermogravimetric analysis, and Fourier transform infrared spectroscopy. H3PO4 is used as an activator agent to create an abundant pore...
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Supervisory Control System for Adaptive Phase and Work Cycle Management of Sequencing Wastewater Treatment Plant
PublikacjaThe paper presents the design of the integrated control system applied to Sequencing Batch Reactor (SBR) in a biological Wastewater Treatment Plant (WWTP) in Swarzewo, which operates under activated sludge technology. Based on the real data records, ASM2d biological processes model and aeration system model, hierarchical control system for dissolved oxygen tracking and cycle management is designed. Internal Model Controller (IMC)...
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Exergetic Analysis of the nCO2PP Cycle with Particular Reference to the Exergy Destruction of Sewage Sludge Due to Gasification
PublikacjaAn exergy analysis is carried out on the negative CO2 emission gas power plant (nCO2PP), which integrates the process sections of fuel preparation, power generation and carbon capture. Processes of exergy destruction are studied with particular focus on the process in the gasification unit of the fuel preparation section, where a large amount of exergy is destroyed in various chemical reactions from sewage sludge to producer gas...