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Search results for: CORONARY ARTERY BYPASS GRAFTING
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Multiscale model for blood flow after a bileaflet artificial aortic valve implantation
PublicationCardiovascular diseases are the leading cause of mortality in the world, mainly due to atherosclerosis and its consequences. The article presents the numerical model of the blood flow through artificial aortic valve. The overset mesh approach was applied to simulate the valve leaflets motion and to realize the moving mesh, in the aortic arch and the main branches of cardiovascular system. To capture the cardiac system’s response...
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Carburization Behavior of High-Grade Pellets After Direct Reduction in Pure Hydrogen
PublicationCarburization is a critical aspect in the iron and steel industry as it significantly affects the mechanical and chemical properties of the final product. This study provides a comprehensive analysis of the carburization potential of high-grade quality iron ore pellets after direct reduction in pure hydrogen. The results show that the porosity of the pellets has a significant impact on the efficiency and success of the direct reduction...
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Corrosion characteristics of the AL-Si alloy after laser treatment at cryogenic conditions
PublicationOmówiono wpływ laserowego powierzchniowego przetapiania stopu Al-Si w warunkach kriogenicznych na jego mikrostrukturę i właściwości użytkowe. W wyniku badań korozyjnych stwierdzono zwiększenie odporności na korozję stopu Al-Siw 0,01 M roztworze H2SO4.
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Balance of pesticides mass in gas, liquid and solid phase after their chemical degradation.
PublicationOpisano metodę usuwania pestycydów z wody przy zastosowaniu fotodegradacji (UV) i katalizatora (TiO2). Efektywność procesu usuwania pestycydów była kontrolowana przy zastosowaniu chromatografu gazowego z detektorem wychwytu elektronów. Oznaczano zawartość pestycydów w wodzie, a także zaadsorbowanych na powierzchni stałej, oraz w fazie gazowej. Największa zawartość pestycydów znajdowała się na fazie stałej, następnie w cieczy i...
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Arte e Género / Sztuka i płeć
PublicationKatalog wystawy towarzyszącej Konferencji na temat równości płci. Malarstwo i rysunek inspirowane tematyką konferencji przentowali artyści z Portugalii, Hiszpanii i z Polski. Jacek Krenz przedstawił cykl 7 akwarel pt. ''ENCOUNTER, Painting Haiku''.
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Praca na własny rachunek : szanse i bariery rozwoju samozatrudnienia : studium przypadku województwa mazowieckiego
PublicationCelem prezentowanego studium jest wskazanie na składniki pakietu działań na rzecz samozatrudnienia, ze specjalnym uwzględnieniem kwestii edukacji. Sukces samozatrudnionego i stworzonego przez niego małego przedsiębiorstwa zależy od cech przedsiębiorcy, a także od uwarunkowań zewnętrznych tworzonych wobec niego przez rynek oraz państwo. W szczególności studium to pokazuje, jak państwo może wzmocnić naturalne szanse rozwoju samozatrudnienia,...
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Improved performance in lithium ion battery of CNT-Fe3O4@graphene induced by three-dimensional structured construction
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Enabling a Stable High-Power Lithium-Bromine Flow Battery Using Task-Specific Ionic Liquids
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Czynniki wspierające oraz bariery przy wdrażaniu systemów jakości w małych organizacjach. Cz. 2
PublicationW artykule przedstawiono wyniki badań opinii przedstawicieli małych organizacji w odniesieniu do certyfikacji i funkcjonowania systemów zarządzania jakością wg normy ISO 9001:2000. Wskazano najważniejsze czynniki pozytywne oraz problemy związane z zagadnieniami stanowiacymi przedmiot badań.
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Neonatal excitotoxic ventral hippocampal damage alters dopamine response to mild repeated stress and to chronic haloperidol
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A facile preparation method and proof of cycle-stability of carbon-coated metal oxide and disulfide battery materials
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Operation of the Hybrid Photovoltaic-Battery System on the Electricity Market—Simulation, Real-Time Tests and Cost Analysis
PublicationThis paper presents research on a hybrid photovoltaic-battery energy storage system, declaring its hourly production levels as a member of a balancing group submitting common scheduling unit to the day-ahead market. It also discusses the variability of photovoltaic system generation and energy storage response. The major research questions were whether the operation of a hybrid photovoltaic-battery energy storage system is viable...
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Experimental and numerical investigation on shell and coil storage unit with biodegradable PCM for modular thermal battery applications
PublicationThermal energy storage (TES) in automotive applications is currently growing in importance. TES can visibly reduce primary energy consumptions, decrease CO2 emission, and improve thermal comfort in electric as well as hybrid vehicles. However, to meet the new ambitious target (15% reduction of CO2 emissions in the new cars until 2025) it is required to use plug-in electric vehicles. For this reason, this paper focuses on the optimization...
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Electronic commerce - główne czynniki wzrostu i bariery na rynku światowym i w Polsce.
PublicationW pracy wskazano na główne czynniki wzrostu Electronic Commerce. Ukazano bariery, które dzięki jego wykorzystaniu mogą zostać przezwyciężone oraz wskazano na nowo powstający rynek informacji. Pokazano szanse wynikające z zastosowania technologii EC, jak również bariery ich stosowania, ze szczególnym uwzględnieniem warunków polskich.
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Underpinning of the foundations of ''Dwór Młyńska'' in Gdańsk.
PublicationPrzedstawiono koncepcję wzmocnienia fundamentów budynku za pomocą pali ''jet-grouting''. Zamieszczono również wyniki próbnych obciążeń pala ''jet-grouting'' oraz ocenę jego nośności.
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Trimethylamine N-oxide and the reverse cholesterol transport in cardiovascular disease: a cross-sectional study
PublicationThe early atherosclerotic lesions develop by the accumulation of arterial foam cells derived mainly from cholesterol-loaded macrophages. Therefore, cholesterol and cholesteryl ester transfer protein (CETP) have been considered as causative in atherosclerosis. Moreover, recent studies indicate the role of trimethylamine N-oxide (TMAO) in development of cardiovascular disease (CVD). The current study aimed to investigate the association...
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Hydrogen Bonds in Blends of Poly(N-isopropylacrylamide), Poly(N-ethylacrylamide) Homopolymers, and Carboxymethyl Cellulose
PublicationRecently, it was reported that the physical crosslinking exhibited by some biopolymers could provide multiple benefits to biomedical applications. In particular, grafting thermoresponsive polymers onto biopolymers may enhance the degradability or offer other features, as thermothickening behavior. Thus, different interactions will affect the different hydrogen bonds and interactions from the physical crosslinking of carboxymethyl...
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Chapter 13 : The influence of dispersion phase on composite coating properties after cold working
PublicationW pracy określono wpływ fazy dyspersyjnej Al2O3 na wybrane potencjalne właściwości powłok kompozytowych o osnowie niklowej. Powłoki Ni-Al-Al2O3 zostały nałożone na próbki stalowe przy użyciu technologii poddźwiękowego płomieniowego natryskiwania cieplnego. Następnie poddane zostały obróbce plastycznej na zimno i na gorąco poprzez walcowanie, a także prasowania na zimno na prasie hydraulicznej. Obróbka plastyczna jest metodą alternatywną...
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The effect of the ceramic dispersion on the nickel matrix composite coating properties after plastic working
PublicationW pracy określono wpływ fazy dyspersyjnej Al2O3 na wybrane potencjalne właściwości powłok kompozytowych o osnowie niklowej. Powłoki Ni-Al-Al2O3 zostały nałożone na próbki stalowe przy użyciu technologii poddźwiękowego płomieniowego natryskiwania cieplnego. Następnie poddane zostały obróbce plastycznej na zimno i na gorąco poprzez walcowanie, a także prasowania na zimno na prasie hydraulicznej. Obróbka plastyczna jest metodą alternatywną...
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Physical activity, life satisfaction and adjustment to illness in women after treatment of breast cancer
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Occurrence of Depressive Symptoms Among Older Adults after a Stroke in the Nursing Home Facility
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The structure and mechanical properties of AlMg5Si2Mn alloy after surface alloying by the use of fiber laser
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Nighttime Hypoglycemia in Children with Type 1 Diabetes after one Day of Football Tournament
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Brain Fog and Quality of Life at Work in Non-Hospitalized Patients after COVID-19
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The experimental study of compaction parameters and elastic after-effect of fine fraction raw materials
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Across-shift changes in upper airways after exposure to bacterial cell wall components
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Application of mechanical Barkhausen noise in assessment of X20 steel properties after heat treatment
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Morphogenesis-related gene-expression profile in porcine oocytes before and after in vitro maturation
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Reconstruction of Ancient Lake after Peat Excavation—A Case Study about Water Quality
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Recovery of facial expressions using functional electrical stimulation after full-face transplantation
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Effect on Phytochemical Content and Microbial Contamination of Actinidia Fruit after Shock Cooling and Storage
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Morbidity, Mortality and Survival after Stomach Resection with or without Splenectomy – The Single Centre Observations
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An unusual case of CTEPH treated by BPA in a patient with a single lung after cancer surgery
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Histological Features of Neovaginal Epithelium after Vaginoplasty in Mayer-Rokitansky-Küster-Hauser Syndrome
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Pooled analysis of WHO Surgical Safety Checklist use and mortality after emergency laparotomy
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The cross-talk between oxidative stress and endocannabinoid system in keratinocytes after UV irradiation
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Hydrological signals in polar motion excitation – Evidence after fifteen years of the GRACE mission
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Does the decline of red wood ants after clear-cutting favour epigeic arthropods?
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Muskrat (Ondatra zibethicus) decline after the expansion of American mink (Neovison vison) in Poland
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WATER QUALITY PARAMETERS OF A SMALL MIDFOREST WATERCOURSE RECEIVING DOMESTIC SEWAGE AFTER TREATMENT
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Cavitation Erosion Resistance of Austenitic Stainless Steel after Glow-Discharge Nitriding Process
PublicationThis paper presents investigation of cavitation erosion resistance of nitrided austenitic stainless steel X5CrNi18-10. The diffusion layers were produced by using different parameters of atmosphere (N2:H2). The microstructure, chemical composition and phase identification of the modified layer were examined using scanning electron microscopy, glow-discharge optical emission spectrometer and X-ray diffractometry, respectively. Cavitation...
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Sensorless algorithm for sustaining controllability of IPMSM drive in electric vehicle after resolver fault
PublicationThis paper presents a sensorless algorithm designated for the emergency control of an interior permanent magnet synchronous motor (IPMSM) drive in electric or hybrid vehicle. The algorithm is based on analysing the derivatives of motor phase currents measured over the duration of particular inverter states. The method is computationally simple and does not require additional hardware since the derivatives are measured indirectly....
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A Study in Experimental Methods of Human-Computer Communication for Patients After Severe Brain Injuries
PublicationExperimental research in the domain of multimedia technology applied to medical practice is discussed, employing a prototype of integrated multimodal system to assist diagnosis and polysensory stimulation of patients after severe brain injury. The system being developed includes among others: eye gaze tracker, and EEG monitoring of non-communicating patients after severe brain injuries. The proposed solutions are used for collecting...
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An overview of the strategies for the deammonification process start-up and recovery after accidental operational failures
PublicationThe deammonification process has been universally acknowledged as an energy-efficient technology for sewage disposal. In contrast with traditional biological nitrogen removal technology, the deammonification process is able to remove ammonia from wastewater with the simplest nitrogen removal process because of its advantages of lower operating expenses, no organic carbon consumption, lower biomass production, lower carbon dioxide...
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Change in Heavy Metals Concentrations in Sediments Deposited in Retention Tanks in a Stream after a Flood
PublicationOur paper presents the results of heavy metal (HM) (Zn, Cu, Pb, Cd) content in bottom sediments from retention tanks along Oliwa Stream in Gdańsk, Poland, before a flood (BF) and after a flood (AF) 14-15 July 2016. The flood had a huge impact on the quality of bottom sediments and their displacement. The concentrations of HM differed significantly for research series conducted 3 months BF and 8 months AF. The concentration of Cu...
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Nanoindentation tests titanium alloy Ti-6Al-4V after interference laser treatment
PublicationThe study aimed was to assess selected mechanical properties of surface layers obtained after interference laser treatment – DLIL of titanium alloy Ti-6Al-4V used for implants. The samples were melted in still air at room temperature, for this purpose Nd:YAG laser was used, the number of laser shots was variable. Next, nanoindentation tests were performed, based on which Young’s modulus and nanohardness in the obtained surface...
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THE EFFECT OF LOG SORTING STRATEGY ON THE FORECASTED LUMBER VALUE AFTER SAWING PINE WOOD
PublicationThe optimal transformation path for the resource is determined by the quality of a log combined with its dimension. The commercial value of derived products is also closely connected with the size and extent of containing wood deficiencies. The results of studies with three diverse strategies for log sorting are presented in the paper. Resource assessment by a worker without extensive experience in sorting logs, the certified grading...
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Three-Dimensional Fractography for Conventional and Additive Manufactured Steels After Bending-Torsion Fatigue
PublicationIn this study, fracture surface topography parameters were measured to investigate the effects of multiaxial loading. In order to assess the metrological aspects of fracture for notched specimens made of high-strength steels processed by both conventional and additively manufacturing (AM) techniques, an optical surface profilometer was used. Three bending moment to torsion moment ratios (B/T) were studied, i.e. 2, 1 and 2/3. The...
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Household Ability of Expenditures on Electricity and Energy Resources in the Countries That Joined the EU after 2004
PublicationThe purpose of the following article is to present the situation of the energy market from a household perspective between 2010 and 2020 in selected EU countries (the group of member states which joined EU after 2004). The selected countries when joining the EU had similar economic indicators and to some extent were similar in other macro-economic situations (personal income, unemployment rate, GDP level and annual growth). This...
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Evaluation of high-frequency roughness measurement errors for composite and ceramic surfaces after machining
PublicationPrecise characterisation of surface topography is of the greatest importance since many factors directly affect the accuracy of the whole measurement process. In this paper, the variety of surface topographies from machined composite and ceramic workpieces was studied with a special emphasis on the measurement results. Surfaces were subjected to the ground diamond, honing and milling processes. Measurement results were analysed...