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Wyniki wyszukiwania dla: RIVER ICE JAM
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Hydrophobic and hydrophilic properties of pollutants as a factor influencing their redistribution during snowpack melt
PublikacjaGlaciers accumulate organic pollutants delivered by snow. However, our understanding of the exact dynamics of organic pollutants in the snowpack relies primarily on laboratory experiments and mathematical models. To fill the gap related to the detailed field data, we have conducted observations of melting snow profiles in two locations and three different stages of melting on one High Arctic glacier, as well as in superimposed...
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Organic carbon fluxes of a glacier surface: a case study of Foxfonna, a small Arctic glacier
PublikacjaArctic glaciers are rapidly responding to global warming by releasing organic carbon (OC) to downstream ecosystems. The glacier surface is arguably the most biologically active and biodiverse glacial habitat and therefore the site of important OC transformation and storage, although rates and magnitudes are poorly constrained. In this paper, we present measurements of OC fluxes associated with atmospheric deposition, ice melt,...
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Glaciers: The dynamic giants of cold regions
PublikacjaGlaciers, often described as nature’s formidable ice giants, are essential components of the Earth's cryosphere, with profound influence on the global water cycle, energy production, and landscape stability. These massive bodies of ice, formed over centuries from accumulated snow, are not just frozen relics of the past; they are dynamic systems that play a critical role in cold region environments. As the climate changes, understanding...
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Hydraulic potential of the Lower Vistula (Poland)
PublikacjaThe Vistula is the largest river in Poland. Lower Vistula (part of the river discussed in this paper) is almost four hundred kilometers long river section extending from the tributary Narew to the outflow to the Baltic Sea. In the 17th century the Vistula was the most navigable river in Europe. After partitioning of Poland the Vistula lost its significance. Now the Lower Vistula should provide a navigation connection to the Europe...
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The structure of electricity production in Poland (data as at the end of 2010)
Dane BadawczeThe energy market in Poland is characterized primarily by the use of only one raw material for the production of electricity. In 2010, as much as 91.4% of electricity was produced on the basis of hard coal or lignite. Therefore, the remaining sources used for the production of electricity participated in the production of electricity to a small extent....
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Zarządzanie w zakresie robót pogłębiarskich oraz konstrukcji morskich
PublikacjaZagadnienia zarządzania ryzykiem w przedsięwzięciach związanych z pogłębianiem oraz konstrukcjami morskimi. Rezultaty konferencji ICE, IADC i CDA. Szczególne problemy zarządzania kontraktem.
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Areas of updraft air motion from WRF model simulations.
Dane BadawczePresented dataset is a part of numerical modelling study focusing on the analysis of sea ice floes size distribution (FSD) influence on the horizontal and vertical structure of convection in the atmosphere. The total area and spatial arrangement of the updrafts indicates that the FSD affects the total moisture content and the values of area averaged...
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Adenocarcinoma of lung, mucinous - Male, 78 - Cell image [1209063003013491]
Dane BadawczeThis is the histopathological image of BRONCHUS AND LUNG cell sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 250 3DHistech slide scanner (20x magnification) and saved to DICOM format.
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Involvement of human glutathione S-transferase M1-1 in the glutathione conjugation of the antitumor unsymmetrical bisacridine derivative C-2028.
Dane BadawczeUnsymmetrical bisacridines (UAs) are a novel potent class of antitumor-active therapeutics. The aim of this study was to investigate the possible role of human glutathione S-transferase M1-1 (hGSTM1-1) in the glutathione (GSH) conjugation of a representative UA, C‑2028.
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Hydrological indicators of water zones in inundation, historical water levels, and forcing data for the 1881-2099 period in the lower Biebrza valley
Dane BadawczeThis data set contains hydrological (1) indicators of water source extents in the Biebrza River floodplain (NE Poland) simulated using an integrated hydrological model (IHM), (2) forcing data for the IHM, and (3) water levels in the Osowiec station from the period 1881-1910.
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Realizacja mobilnego urządzenia do wytwarzania kurtyny elektromagnetycznej do zastosowań specjalnych
PublikacjaIn the article the assumptions, design and realisation of the technological demonstrator of a mobile device for generating an electromagnetic curtain (AEGIS) were presented, both in the area of hardware and software. The device is designed to block radio communication by which it is possible to detonate the Radio Controlled Improvised Explosive Devices (RCIEDs). The preliminary laboratory tests of the demonstrator for generating...
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Structure of solvation water around the active and inactive regions of a type III antifreeze protein and its mutants of lowered activity
PublikacjaWater molecules from the solvation shell of the ice-binding surface are considered important for the antifreeze proteins to perform their function properly. Herein, we discuss the problem whether the extent of changes of the mean properties of solvation water can be connected with the antifreeze activity of the protein. To this aim, the structure of solvation water of a type III antifreeze protein from Macrozoarces americanus (eel...
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Spatiotemporal dynamics of the active perirheic zone in a natural wetland floodplain
PublikacjaAbstract The ecologically and biogeochemically significant perirheic zone is a part of the floodplain where waters originating from both the river and adjacent floodplain are present. In this study, we investigate the spatiotemporal dynamics of the active perirheic zone, i.e. river and floodplain waters and their transient mixing extent. This is achieved by using the Hydraulic Mixing-Cell method, a complement to a fully integrated...
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AEGIS – Mobile Device for Generating Electromagnetic Curtain for Special Applications and Countering the Threats of RCIED
PublikacjaIn the article the assumptions, design and realization of the technological demonstrator of a mobile device for generating an electromagnetic curtain (with a cryptonym AEGIS) were presented, both in the area of hardware and software. The device is designed to block the radio communication systems by which it is possible to detonate the Radio Controlled Improvised Explosive Devices (RCIEDs). The preliminary laboratory tests of the...
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Mrówczan sodu z nowym pakietem inhibitorów korozji jako ekologiczny środek do odladzania infrastruktury lotniczej.
PublikacjaPrzedstawiono wyniki badań korozji kadmowej powłoki na stali oraz korozji po zanurzeniu stopów metali w mrówczanie sodu z nowym pakietem inhibitorów korozji, zawierającym synergiczną kompozycję poliasparaginianu sodu oraz imidazolu. Ponadto wyznaczono zdolność penetracji lodu przez badany układ. Właściwo- ści opracowanej kompozycji odladzającej porównano z właściwościami środków dostępnych na rynku. Uzyskane wyniki wskazują, że otrzymany...
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ANALYSIS OF THE IMPACT OF THE PLANNED SEWAGE DISCHARGE FROM THE ‘NORTH’ POWER PLANT ON THE VISTULA WATER QUALITY
PublikacjaThe paper presents results of analysis of the industrial sewage discharge impact from the ‘North’ Power Plant on the Vistula water quality around 45+330 of the river kilometer. For the analysis, the two-dimensional models of flow, impurities and temperature transport were used. Hydrological conditions of the analyzed section of the river, characteristic flows and bathymetry of the riverbed in the first instance were defined....
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Ciliated protozoa in the impact zone of the Uzhgorod treatment plant
PublikacjaThis paper presents the results of studies on the Uzh River (Ukraine, Zakarpattia Oblast) near the effluent point of a sewage treatment plant in Uzhgorod. The samples were taken at various sites of the treatment plant along the stages of purification process, as well as in the river, at a number of different points above and below the wastewater discharge. At each of these objects, the temperature...
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Mieczysław Brdyś prof. dr hab. inż.
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Wyznaczenie obciążeń na poszycie okrętu wywołanych uderzeniem fal i uderzeniem w lód i ich wpływ na bezpieczeństwo okrętu
PublikacjaThe main problem is the vessels rather accurate determination of the hydrodynamic loads so-called hydroelasticity outside . This can be done by theoretical analysis , computer simulation or by experiment. This gives the hydrodynamic pressure distribution on the walls of the ship's hull and also on the walls of marine vessels .The most dangerous are the impact of extreme storm waves , the impact of the wharf and the impact zone...
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Innovative Solutions in Surface Water Quality Monitoring
PublikacjaIn 2010 a project entitled "Integrated Support System for Management and Protection of Water Dam Reservoir (ZiZOZap)” was initiated, to aid solving water management problems on a river and dam reservoir formed on it. An innovative system of continuous monitoring was created, that encompassed selected physical and chemical parameters of river and lake waters in three chosen sites. This article presents a selection of results, that...
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Mathematical Modeling of the Impact Range of Sewage Discharge on the Vistula Water Quality in the Region of Włocławek
PublikacjaThe paper presents results of analysis of the industrial sewage discharge influence at km 688 + 250 of the Vistula River on water quality. During the analysis, two-dimensional models of flow, impurities and temperature transport were used. Hydrological conditions of the analyzed section of the river, characteristic flows and bathymetry of the riverbed in the first instance were defined. Calculations of velocity distribution at...
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Glutathione conjugation of the antitumor-active 1-nitroacridine derivatives compounds C-857 and C-1748 – the major role of glutathione S-transferase M1-1
Dane BadawczeObjectives: C-857 and C-1748 are antitumor-active agents, monomers of unsymmetrical bisacridine derivatives. The aim of this study was to analyze their glutathione (GSH) conjugation in vitro in the presence of glutathione S-transferase (GST) M1-1.
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Reducing Monitoring Costs in Industrially Contaminated Rivers: Cluster and Regression Analysis Approach
PublikacjaMonitoring contamination in river water is an expensive procedure, particularly for developing countries where pollution is a significant problem. This study was conducted to provide a pollution monitoring strategy that reduces the cost of laboratory analysis. The new monitoring strategy was designed as a result of cluster and regression analysis on field data collected from an industrially influenced river. Pollution sources in...
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Measurements of displacement and acceleration of the railway bridge at km 333-254 of the Vilnius - Klaipeda railway line
PublikacjaThe purpose of this work is to perform a report of static and dynamic test realized on the bridge at km 333-254 of the Vilnius - Klaipeda railway line over the Salantas River in Kūlupėnų.
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Input files for the Floodsar software
Dane BadawczeInput files for the Floodsar softwareAuthor: Tomasz Berezowski, Gdansk University of Technology, tomberez@eti.pg.edu.pl
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Generating optimal paths in dynamic environments using RiverFormation Dynamics algorithm
PublikacjaThe paper presents a comparison of four optimisation algorithms implemented for the purpose of finding the shortest path in static and dynamic environments with obstacles. Two classical graph algorithms –the Dijkstra complete algorithm and A* heuristic algorithm – were compared with metaheuristic River Formation Dynamics swarm algorithm and its newly introduced modified version. Moreover, another swarm algorithm has been compared...
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An Integrated Approach to an Assessment of Bottlenecks for Navigation on Riverine Waterways
PublikacjaWater transport, both sea and inland, is the cheapest, least invasive, and safest option for non-standard loads; hence, it is important to increase the percentage share of inland waterway transport on the rivers of Central and Eastern Europe. Transporting cargo is particularly difficult on shallow waterways because rivers overloaded with sediment determine the vertical parameters on inland waterways. A ship’s safe manoeuvrability...
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Stężenie formaldehydu w wodach spływnych z arterii komunikacyjnych, powierzchni dachów budynków i koron drzew, wodach gruntowych i rzecznych oraz w opadach i osadach atmosferycznych na terenie aglomeracji miejskich = Formaldehyde in road runoff, roof runoff, ground water, river, atmospheric precipitation and deposition from highly urbanized regions
PublikacjaOznaczono stężenie formaldehydu w próbkach wód opadowych, spływnych z arterii komunikacyjnych, powierzchni dachów budynków i koron drzew, wód gruntowych i cieków wodnych oraz w próbkach śniegu, szronu i sadzi. Próbki pobierano przez okres 7 miesięcy w trakcie wystąpienia opadu lub osadu atmosferycznego lub tuż po jego ustąpieniu. Pomiar zawartości formaldehydu wykonywano stosując metodę szybkich testów spektrofotometrycznych w...
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Morphometric parameters of the Renardbreen as important factors determining the spatial distribution of chemical compounds on the glacier surface (Bellsund, Svalbard)
PublikacjaThis paper concern influence of the morphometric parameters (height, length and slope of the glacier) on the spatial distribution of the physicochemical parameters (pH, electrical conductivity, total organic carbon) determined in the ice and snow samples collected from the surface of Renardbreen during summer season of 2012. Obtained results allow to assume also a significant changes in a spatial distribution of other chemical...
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Pumps, turbines and small hydropower, DaPE, LEC/LAB, sem.05 winter 24/25, (M:320403W0)
Kursy OnlineThe aim of the course is to provide students with knowledge of basic information about hydrotechnical structures used for damming water used for small hydropower, discussing the machine equipment of a small hydropower plant and its cooperation with the power grid, providing basic concepts and principles of operation of hydraulic turbines and pumps and their selection, and the environmental impact of the energetic use of the river.
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Pumps, turbines and small hydropower, ET, LEC/LAB, sem.07 winter 24/25, (PG_00042108)
Kursy OnlineThe aim of the course is to provide students with knowledge of basic information about hydrotechnical structures used for damming water used for small hydropower, discussing the machine equipment of a small hydropower plant and its cooperation with the power grid, providing basic concepts and principles of operation of hydraulic turbines and pumps and their selection, and the environmental impact of the energetic use of the river.
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SEA SLUGG - Student Experiment Again: Submarine Launched into μGravity from Gdansk
PublikacjaSearch for extraterrestrial life has been a drive wheel for space technology research for half a century. Recentresearch in astrobiology suggests that underwater oceans on Jovian moon Europa, Saturnian moon Titan and possiblyasteroids may be a potential habitat for such microbial life. The unique combination of an actively recycled ice shelland rocky, possibly magmatic interior may give rise to a geochemical system suitable...
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DETERMINANTS OF INLAND NAVIGATION ON THE VISTULA FROM WARSAW TO GDAŃSK
PublikacjaWaterborne transport is the cheapest, the safest and the least harmful to the natural environment. Restoring regular waterway cargo transport will require revitalisation of the existing trans-shipment and logistics infrastructure for commercial inland ports and building new. Transport policy makers must remember that waterborne transport is the most ecological type of transport. It produces only 10% of the gases emitted to the...
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Towards rainfall interception capacity estimation using ALS LiDAR data
PublikacjaIn this study we develop a spatial model for interception capacity of vegetation based on LiDAR data. The study is conducted in the natural wetland river valley dominated meadows, reeds and small bushes. The multiple regression model was chosen to relate the field measurements of interception capacity and LiDAR statistics at 2m grid. The optimal model was chosen by stepwise selection and further manual variables selection resulting...
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Analysis of the Application of Horizontal Directional Drilling
PublikacjaConstruction works are often considered to be very intrusive for the environment. Project designers assume deep excavations, or a complete replacement of the ground within the investment, which sometimes changes the initial conditions drastically. The problem started to appear in places, where the terrain is complicated and the excavation is burdensome. Some of state authorities...
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Problems of construction projects regarding historic road bridges
PublikacjaThe paper describe the comparison of different approaches to reconstruction and the problems in the selection of implementation for a historic bridge over the Vistula River in Tczew. A compromise reconstruction is shown, taking technical, historical and aesthetic aspects into account, as well as needs of the local community.
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Measurement report: Spatial variations in ionic chemistry and water-stable isotopes in the snowpack on glaciers across Svalbard during the 2015–2016 snow accumulation season
PublikacjaThe Svalbard archipelago, located at the Arctic sea-ice edge between 74 and 81∘ N, is ∼60 % covered by glaciers. The region experiences rapid variations in atmospheric flow during the snow season (from late September to May) and can be affected by air advected from both lower and higher latitudes, which likely impact the chemical composition of snowfall. While long-term changes in Svalbard snow chemistry have been documented in...
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Occurrences, sources, and transport of organochlorine pesticides in the aquatic environment of Antarctica
PublikacjaWe review information on the concentration levels of organochlorine pesticides in the abiotic aquatic environment (in seawater, sea ice, surface freshwater, snow, firn, and glacial ice) and the organisms inhabiting those, in Antarctica. Particular attention is given to the environmental fate of these pollutants, which modifies their impact on the organisms living in the Antarctic. OCPs have been delivered to the Antarctic environment...
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Application of multisensoral remote sensing data in the mapping of alkaline fens Natura 2000 habitat
PublikacjaThe Biebrza River valley (NE Poland) is distinguished by largely intact, highly natural vegetation patterns and very good conservation status of wetland ecosystems. In 2013⿿2014, studies were conducted in the upper Biebrza River basin to develop a remote sensing method for alkaline fen classification ⿿ a protected Natura 2000 habitat (code 7230) ⿿ using remote sensing technologies. High resolution airborne true colour (RGB) and...
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Potential Impact of Waterway Development on Cultural Landscape Values: The Case of the Lower Vistula
PublikacjaThe northern (“lower”) section of the Vistula is on the route of two international waterways—E70 and E40. However, the current condition of the riverbed prevents larger vessels from passing through. Plans for the waterway date back to the beginning of the 20th century. Following Poland’s ratification of the European Agreement on Main Inland Waterways of International Importance in 2017, the general concept has been transformed...
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Żegluga towarowa na Wiśle
PublikacjaKoncepcje rozwoju drogi wodnej WISŁY.Bariery utrudniaące rozwój transportu wodnego i przesłanki przemawiające za aktywizacją dróg wodnychb w Polsce.Propozycja drogi wodnej na Wiśle jako elementu łańcucha transportowego z terminalami kontenerowymi w porcie Gdańskim, Bydgoszczy,Warszawie oraz docelowo w rejonie Krakowa jako elementu przyszłego kanału Śląskiego. Koncepcja centrum logistycznego w Bydgoszczy
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Sea Ice Project 2 Obserwacje i modelowanie interakcji lodu morskiego z warstwą graniczną atmosfery i oceanu
ProjektyProjekt realizowany w Zakład Oceanografii Fizycznej zgodnie z porozumieniem 2018/31/B/ST10/00195 z dnia 2019-07-09
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Sea Ice Project 1 Modelowanie numeryczne lodu morskiego metodami elementów dyskretnych – rozwój podstaw teoretycznych i metod numerycznych
ProjektyProjekt realizowany w Zakład Oceanografii Fizycznej zgodnie z porozumieniem 2015/19/B/ST10/01568 z dnia 2016-07-27
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Rafał Janowicz dr hab. inż. arch.
OsobyRafał Janowicz jest adiunktem na wydziale Architektury Politechniki Gdańskiej w Katedrze Technicznych Podstaw Projektowania Architektonicznego od 2011 roku. Ukończył studia na kierunku Architektura i Urbanistyka na Wydziale Architektury Politechniki Gdańskiej w 2001 roku, a dwa lata później na kierunku Zarządzanie i Marketing na Wydziale Zarządzania i Ekonomii PG. W 2011 r. obronił pracę doktorską na Wydziale Architektury Politechniki...
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Współczesny obraz żuławskiego podcienia
PublikacjaThe Contemporary Image of Żuławy Arcades. The cultural landscape of the Vistula River Delta is created by man in large part. Almost all of its components- buildings, roads, embankments and as natural as trees, water and earth are anthropogenic origin. Arcaded houses are part of this multi-dimensional mosaic for more than four centuries.
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Workshop on Graph Theory
WydarzeniaThe Gdańsk Workshop on Graph Theory (GWGT) is an annual, informal workshop whose goal is to provide a forum for scientists to meet, present their work, interact, and establish collaborations in the field of Graph Theory
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Evaluation and application of data from road weather stations for winter maintenance management
PublikacjaThe paper presents the analysis of road weather data from meteorological stations located at the Polish national roads of Pomerania District during the impact of winter conditions. Presented issue is particularly important from the point of view the problem of winter maintenance and especially for prediction and assurance of quality of asphalt pavement surface ie. resistance to low temperature cracking or risk of glazed frost....
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Processes and the Resulting Water Quality in the Medium size Turawa Storage Reservoir after 60 Year Usage
PublikacjaThe Turawa reservoir built on the Mała Panew river is one of important storage reservoirs in Poland. Quite many physico-chemical parameters of water in the reservoir itself and also in the reservoir inflowing rivers at different times of the year were measured and compared. The changes of water characteristics as well as their reasons and consequences were discussed.
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PRZEBIEG TEMPERATURY ZIM NA OBSZARZE POLSKI W LATACH 1720–2015
PublikacjaThe work discusses the air temperature course of winter periods (December–March) in Poland in the years 1720–2015. The analysis is carried out for area mean values calculated from 5 stations: Szczecin, Wrocław, Warsaw, Wilno and Lwów. The time series of the mean area winter temperature (hereinafter PLZ) consists of combined observational (140 years) and reconstructed (156 years) data. PLZ reconstruction is based on independent...
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Zmiany temperatury wody powierzchniowej na morzach Arktyki Rosyjskiej i ich konsekwencje dla żeglugi na Północnej Drodze Morskiej
PublikacjaPraca omawia zmiany średniej miesięcznej temperatury wody powierzchniowej na morzach Arktyki Rosyjskiej w latach 1979-2016. Stwierdzono, że w badanym okresie następował powolny wzrost SST. Jednakże tylko na Morzu Barentsa był on istotny statystycznie we wszystkich miesiącach roku (poza marcem w SE części tego morza), a w zachodniej części Morza Czukockiego w okresie od czerwca do grudnia. W dalszym ciągu na wszystkich morzach,...