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Search results for: MEA
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Józef Kur prof. dr hab.
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Maciej Bagiński prof. dr hab. inż.
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Vertical motions damping model test of a lifeboat lowered onto a flat sea surface
PublicationThe article presents the experiment’s results of the lifeboat model lowered with an initial speed and then released to fall onto a flat water surface. The purpose of the research is to determine the trajectory of the vertical boat motion and describe it with a mathematical model. This is closely related to determining the damping factor since the vertical motion is damped and the lifeboat gets balanced and stops moving after some...
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Baltic Sea climate fever. Creative solutions for waterfront cities in the context of climate change
PublicationThe goal of the research is to recognize climate change impact on Baltic Sea cities and description of strengths and weaknesses of cities strategies and activities. The range of research has been limited to 3 cities in the Baltic Sea (Copenhagen, Gothenburg, Tallinn) and Tricity as an area for which recommendations will be proposed actions in the field of adaptation to climate change. Recommendations for Tricity as a unique group...
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Investigations On Water Circulation in Animal Sea-Water Basins – On the Example of Seals′ Breeding Pools
PublicationThis paper presents general comments concerning investigations on water circulation in animal breeding pools containing sea water. As an example are given results of computer simulation of water circulation in seals’ breeding pools situated in Marine Station at Hel, belonging to Oceanographic Institute, Gdansk University. A mathematical model of three main pools was prepared with taking into account their inflow and outflow water...
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Model of Nutrient and Pesticide Outflow with Surface Water to Puck Bay (Southern Baltic Sea)
PublicationCoastal basins are particularly exposed to the adverse impact of anthropogenic stress. In many places, despite only the seasonal increase in the number of residents, progressive urbanization and associated changes in the catchment characteristics are noticeable. Puck Bay is part of the Gulf of Gdansk and belongs to the Baltic Sea. Although the area of Puck Bay is covered by the Natura 2000 Network, this has not saved it from eutrophication...
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Impact of hydrotechnical works on outflow of mercury from the riparian zone to a river and input to the sea
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Influence of ice concentration and floe-size distribution on cluster formation in sea-ice floes
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Abnormal features of Macoma balthica (Bivalvia) in the Baltic Sea: alerting symptom of environmental changes?
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Variability of sea ice deformation rates in the Arctic and their relationship with basin-scale wind forcing
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Sea-ice floe-size distribution in the context of spontaneous scaling emergence in stochastic systems
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Large size LSO:Ce and YSO:Ce scintillators for 50 MeV range γ-ray detector
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Mercury in suspended matter of the Gulf of Gdańsk: Origin, distribution and transport at the land–sea interface
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Mercury forms in the benthic food web of a temperate coastal lagoon (southern Baltic Sea)
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Optimal Placement of Phasor Measurement Unit in Power System using Meta-Heuristic Algorithms
PublicationThe phasor measurement units (PMUs) play an important and vital role in power system monitoring and controlling, since they provide the power system phasors stamped with a common real time reference through a global positioning system (GPS). Indeed, from economical point of view it is not possible to set PMUs in all system buses due to the high cost and the requirement of more complex communication...
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The modulatory effect of green tea catechin on drug resistance in human ovarian cancer cells
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Post-activation Performance Enhancement in the Bench Press Throw: A Systematic Review and Meta-Analysis
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High resolution model for assessment of contamination by chemical warfare agents dumped in the Baltic Sea
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Distribution and extent of benthic habitats in Puck Bay (Gulf of Gdańsk, southern Baltic Sea)
PublicationThe majority of the southern Baltic Sea seabed encompasses homogenous soft-bottom sediments of limited productivity and low biological diversity, but shallow productive areas in the coastal zone such as wetlands, vegetated lagoons and sheltered bays show a high variety of benthic habitat types offering favourable biotopic conditions for benthic fauna. Within Polish marine areas, semi-enclosed Puck Bay (the western part of the...
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Mercury in suspended matter of the Gulf of Gdańsk: Origin, distribution and transport at the land–sea interface
PublicationThe coastal regions of inland seas are particularly vulnerable to Hg pollution. An important carrier of toxic Hg in the marine environment is suspended matter originating from multiple sources. The present study was conducted in the Gulf...
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Effects of Resveratrol Supplementation in Patients with Non-Alcoholic Fatty Liver Disease—A Meta-Analysis
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Mesh-based internet on the Baltic sea for improving e-navigation services. A case study
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Identification of Markers Associated with Yield Traits and Morphological Features in Maize (Zea mays L.)
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MEL zeolite nanosheet membranes for water purification: insights from molecular dynamics simulations
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Mercury in the Polish part of the Baltic Sea: A response to decreased atmospheric deposition and changing environment
PublicationOur review of the literature showed that since the beginning of the socio-economic transformation in Poland in the 1990s, the downward trend in Hg emissions and its deposition in the southern Baltic Sea was followed by a simultaneous decrease in Hg levels in water and marine plants and animals. Hg concentrations in the biota lowered to values that pose no or low risk to wildlife and seafood consumers. However, in the first decade...
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Prevalence of polycystic ovary syndrome in European countries and USA: A systematic review and meta-analysis
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Chemical recycling of plastic waste as a mean to implement the circular economy model in the European Union
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Joint Analysis of National Eco-Efficiency, Eco-Innovation and SDGs in Europe: DEA Approach
PublicationThe growing complexity and intertwining of different socio-economic issues both in individual countries and internationally mean that single-theme analyses do not consider all the relationships and thus have cognitive limitations. Therefore, studies that combine several research areas are increasingly common in the literature to clarify the connections and relationships. In this study, considering the sequential nature of the...
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Reliability Testing of Wind Farm Devices Based on the Mean Time between Failures (MTBF)
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Developmental selenium exposure and health risk in daily foodstuffs: A systematic review and meta-analysis
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Basis for a valuation of the Polish Exclusive Economic Zone of the Baltic Sea: Rationale and quest for tools.
PublicationW pracy przedstawiono zasoby i usługi Polskiej Strefy Ekonomicznej ekosystemu Morza Bałtyckiego. Dokonano przeglądu specyficznych właściwości tej strefy, które mogą mieć wartość ekonomiczną.
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Laboratory measurements of remote sensing reflectance of selected phytoplankton species from the Baltic Sea
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Sympathetic Neural Outflow and Chemoreflex Sensitivity Are Related to Spontaneous Breathing Rate in Normal Men
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Impact of methane occurrence on iron speciation in the sediments of the Gdansk Basin (Southern Baltic Sea)
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Yoga for Heart Rate Variability: A Systematic Review and Meta-analysis of Randomized Clinical Trials
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Mangiferin Has an Additive Effect on the Apoptotic Properties of Hesperidin in Cyclopia sp. Tea Extracts
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JOINT ANALYSIS OF NATIONAL ECO-EFFICIENCY, ECO-INNOVATION AND SDGS IN EUROPE: DEA APPROACH
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Post mortem development of meat quality as related to changes in cytoskeletal proteins of chicken muscles
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Application of FMEA analysis for assessing reliability and risk in biogas-fueled engines operation process
PublicationW pracy zamieszczono propozycję wykorzystania analizy FMEA (ang. Failure mode and effects analysis) - analizy rodzajów i skutków możliwych błędów występujących w instalacjach przemysłowych z silnikami spalinowymi. Obserwowany w ostatnich latach rozwój energetyki rozproszonej, opartej na tłokowych silnikach spalinowych jest wynikiem m.in. prowadzonej polityki rozwoju wykorzystania odnawialnych źródeł energii (OŹE) związanej z zagospodarowaniem...
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Characterization of Rapana thomasiana as an indication of environmental quality of the Black Sea coast og Bulgaria
PublicationW pracy przedstawiono wyniki badań próbek mięczaków morskich (brzuchonogów) na zawartość takich składników jak wielopierścieniowe węglowodory aromatyczne, polichlorowane bifenyle, mikroelementy tych składników oraz aktywność biologiczną. Oceniono różnice w zawartości tych składników w próbkach uzyskanych z tych mięczaków morskich zebranych na obszarach niezanieczyszczonych i obszarach charakteryzujących się dużą intensywnością...
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Morphology of bio-based polyurethane composites filled by mer-cerized or silanized natural fibres
PublicationBio-composites are materials which possess unique properties and undergo biodegra-dation under specific conditions. Bio-composites belong to the group of materials produced with the use of renewable raw materials. They contain reinforcement, mainly in the form of natural fiber, which has high stiffness and resistance; filler powders are less frequently used. Significant features of natural fibers are elongation, density, thermal...
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Sources and fate of microplastics in marine and beach sediments of the Southern Baltic Sea—a preliminary study
PublicationMicroplastics’ sources and fate in marine bottom and beach sediments of strongly polluted Baltic Sea have been investigated.Microplastics were extracted using sodium chloride. Their qualitative identification was conducted using micro-Fourier-transform infrared spectroscopy (μFT-IR).
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The influence of elastic deformation on the properties of the magnetoacoustic emission (mae) signal for go electrical steel
PublicationZbadano własciwości sygnału emisji magnetoakustycznej (MAE) elektrotechnicznej stali GO poddanej deformacji plastycznej w temperaturze pokojowej
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Transcriptomic Effects of Estrogen Starvation and Induction in the MCF7 Cells. The Meta-analysis of Microarray Results
PublicationEstrogen is one of the most important signaling molecules which targets a number of genes. Estrogen levels regulate cell proliferation and a plethora of metabolic processes, which may interfere with a range of medical conditions and drug metabolism. The MCF7 breast cancer cell line, expressing the estrogen receptor α, is a well-studied model of cellular answer to estrogen. The aim of this study was to characterize transcriptomic...
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The effect of high pressure on formation of volatile amines in minced meat of cod (Gadus morhua)
PublicationThe effects of high pressure at subzero temperature (193 MPa, at −20 °C) on inactivation of natural microflora of cod meat and degradation of trimethylamine oxide (TMAO) to trimethylamine (TMA) during refrigerated storage and to dimethylamine (DMA) and formaldehyde (FA) during frozen storage were investigated. The content of TMA, DMA and FA in cod meat did not change immediately after pressure treatment. During 40 days of frozen...
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Modal properties identification of a novel sandwich footbridge – Comparison of measured dynamic response and FEA
PublicationA modern sandwich composite footbridge made of high-tech materials, being an example of practical application of laminated composites in civil engineering, is presented. The in situ non-destructive testing of the footbridge, aiming to identify modal properties and pedestrian comfort, is described. The measured eigenmodes and eigenfrequencies are compared with numerically estimated values. Finite element analyses of the footbridge...
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Zmodernizowany most Łazienkowski w Warszawie – analizy z wykorzystaniem modelu numerycznego MES
PublicationW artykule przedstawiono proces modelowania statycznego przęseł mostu Łazienkowskiego w Warszawie, który został poddany odbudowie po pożarze 14 lutego 2015 r. Sprawdzające obliczenia numeryczne wykonano w związku z badaniami konstrukcji podczas próbnego obciążenia. Przeprowadzono weryfikację obliczeń projektowych i zaprojektowano próbne obciążenie. Podsumowano wyniki analizy i badań. Dodatkowo opisano nową, stalową konstrukcję...
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Seagrass vegetation and meiofauna enhance the bacterial abundance in the Baltic Sea sediments (Puck Bay)
PublicationThis study presents the first report on bacterial communities in the sediments of eelgrass (Zostera marina) meadows in the shallow southern Baltic Sea (Puck Bay). Total bacterial cell numbers (TBNs) and bacteria biomass (BBM) assessed with the use of epifluorescence microscope and Norland’s formula were compared between bare and vegetated sediments at two localities and in two sampling summer months. Significantly higher TBNs and...
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On the Usefulness of the Generalised Additive Model for Mean Path Loss Estimation in Body Area Networks
PublicationIn this article, the usefulness of the Generalised Additive Model for mean path loss estimation in Body Area Networks is investigated. The research concerns a narrow-band indoor off-body network operating at 2.45 GHz, being based on measurements performed with four different users. The mean path loss is modelled as a sum of four components that depend on path length, antenna orientation angle, absolute difference between transmitting...
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Comparison of backscattered sea bottom echo modelling in the acoustic pressure domain and in the intensity domain
PublicationPrzedstawiono dwie metody modelowania rozpraszania wstecznego na dnie morskim: modelowania ciśnienia akustycznego opartego na aproksymacji Kirchhoffa oraz modelowania natężenia echa przy założeniu dominacji rozpraszania niekoherentnego. Porównano i przedyskutowano wyniki w odniesieniu do problemu poszukiwania jak najwłaściwszego opisu zjawiska rozpraszania sygnału akustycznego na dnie.