Filters
total: 3931
filtered: 2672
-
Catalog
- Publications 2672 available results
- Journals 35 available results
- Conferences 1 available results
- Publishing Houses 1 available results
- People 53 available results
- Inventions 2 available results
- Projects 19 available results
- Research Equipment 1 available results
- e-Learning Courses 3 available results
- Events 12 available results
- Open Research Data 1132 available results
Chosen catalog filters
displaying 1000 best results Help
Search results for: TEMPERATURE OF THE BALTIC WATERS
-
The chemistry and toxicity of discharge waters from copper mine tailing impoundment in the valley of the Apuseni Mountains in Romania
Publication -
Towards an analysis framework for operational risk coupling mode: A case from MASS navigating in restricted waters
PublicationMaritime Autonomous Surface Ships (MASSs) constitute highly interconnected and tightly coupled multistate systems. Incorporating the coupling effects of both interactions and dependencies is centrally important to ensure navigation safety of MASSs. This paper proposes a framework for examining the coupling effects in the operational modes (OM) of MASSs. Failure Modes (FMs) of MASSs related to interactions with the environment and...
-
Effect of bitumen characteristics obtained according to EN and Superpave specifications on asphalt mixture performance in low-temperature laboratory tests
PublicationThe paper aims to identify those characteristics of bitumen which have the greatest impact on asphalt mixture low-temperature performance. It was observed that stiffness and m-value of bitumen from BBR test were moderately related to stiffness and m-value of asphalt mixture obtained from 3 PB test. Simultaneously those rheological properties significantly impact on cryogenic stresses induced during TSRST test. The multiple regression...
-
Measurement of temperature-dependent viscosity and thermal conductivity of alumina and titania thermal oil nanofluids
PublicationThe results of simultaneous measurements of dynamic viscosity, thermal conductivity, electrical conductivity and pH of two nanofluids, i.e. thermal oil/Al2O3 and thermal oil/TiO2 are presented. Thermal oil was selected as a base liquid because of possible application in ORC systems as an intermediate heating agent. Nanoparticles were tested at the concentration of 0.1%, 1% and 5% by weight within temperature range from 20°C to...
-
MEASUREMENT OF TEMPERATURE-DEPENDENT VISCOSITY AND THERMAL CONDUCTIVITY OF ALUMINA AND TITANIA THERMAL OIL NANOFLUIDS
PublicationIn this study results of simultaneous measurements of dynamic viscosity, thermal conductivity, electrical conductivity and pH of two nanofluids, i.e. thermal oil/Al2O3 and thermal oil/TiO2 are presented. Thermal oil is selected as a base liquid because of possible application in ORC systems as an intermediate heating agent. Nanoparticles were tested at the concentration of 0.1%, 1% and 5% by weight within temperature range from...
-
Sestaveni Smerne Krivky Modulu Tuhosti Pro Zkoumani Nizkotrplotnich Vlastnosti (Developing of Stiffness Master Curve for Analysis of Low Temperature Properties)
PublicationV prispevku je predstaven novy postup pro sestrojeni smernych tuhostnich krivek. Nizkoteplotni vlastnosti asfaltove smesi byly stanoveny za vyuziti zkousky dotvarovani pri tribodovem ohybu. Motivem tohoto vyzkumu je skutecnost, ze metody hodnoceni nizkoteplotniho chovani asfaltovych smesi, nove zavedenych v Polsku, nejsou dostatecne. V zaveru jsou prezentovany smerne krivky tuhosti beznych asfaltovych smesi vyuzivanych v Polsku.
-
Daily Radiation Budget of the Baltic Sea Surface from Satellite Data
Publication -
Arsenic concentrations in Baltic Sea sediments close to chemical munitions dumpsites
Publication -
Use of Satellite Data in Monitoring of Hydrophysical Parameters of the Baltic Sea Environment
Publication -
Observations of presumable groundwater seepage occurrence in Puck Bay (the Baltic Sea)
Publication -
Wave-induced bedload transport – a study of the southern Baltic coastal zone
Publication -
Mercury in particulate matter over Polish zone of the southern Baltic Sea
Publication -
Sea-dumped ammunition as a possible source of mercury to the Baltic Sea sediments
Publication -
Assessment of river water quality in the South Baltic coast by multivariate techniques
Publication -
Mercury in the zoobenthos of the coastal zone of the Puck Bay (southern Baltic Sea)
Publication -
Mercury in various components of the environment (Gulf of Gdańsk, southern Baltic Sea)
PublicationTotal mercury concentration was determined monthly form January 2012 to May 2013 in the water (microlayer and the surface), plankton, epilithon, epiphyton, benthos and sediment. The study was conducted in the coastal zone of the Gulf of Gdańsk. The abundance and biomass of plankton, benthos; the concentration of suspended particulate matter, particulate organic carbon and nitrogen; δ13C and δ15N in the suspended matter; sediment...
-
Rip currents in the southern Baltic Sea multi-bar nearshore zone
Publication -
Exposure status of sea-dumped chemical warfare agents in the Baltic Sea
Publication -
Deep sea habitats in the chemical warfare dumping areas of the Baltic Sea
Publication -
Spatiotemporal distribution of copepod populations in the Gulf of Gdansk (southern Baltic Sea)
Publication -
An evaluation and implementation of the regional coupled ice-ocean model of the Baltic Sea
Publication -
The Baltic Sea as a dumping site of chemical munitions and chemical warfare agents
PublicationW pracy przedstawiono problem składowania w Morzu Bałtyckim aminucji chemicznej i bojowych środków trujących. Przedstawiono typy oraz charakterystykę BST składowanych na dnie Morza Bałtyckiego. Omówiono potencjalne zagrożenia dla środowiska abiotytcznego oraz dla organizmów żywych związanych z tego typu składowiskami. Przedstawiono również podstawowe informacje o procedurach analitycznych, które mogą być wykorzystane do wykrywania...
-
Problems of adapting Polish ports for ferry shipping services on the Baltic Sea
PublicationArtykuł zawiera analizę porównawczą największych terminali promowych na Bałtyku oraz terminali promowych położonych w części południowej i wschodniej Morza Baltyckiego, w tym w Polsce. W pracy przedstawiono również możliwości i kierunki rozwoju polskich terminali promowych.
-
Determination of chlorophenols and phenoxyacid herbicides in the Gulf of Gdańsk, Southern Baltic Sea.
PublicationChlorofenole i kwasy fenoksyoctowe to dwie grupy zanieczyszczeń środowiska, obecne w wodach powierzchniowych. Kwasy fenoksyoctowe, ze względu na dobrą rozpuszczalność w wodzie, stosunkowo łatwo przedostają się do zbiorników wodnych i innych elementów środowiska. W ramach pracy postanowiono zbadać zawartość chlorofenolu i kwasów fenoksyoctowych oraz ich sezonowe zmiany w wodach ujścia Wisły i Zatoki Gdańskiej. Opracowano metodę...
-
CPLFD-GDPT5: High-resolution gridded daily precipitation and temperature data set for two largest Polish river basins
PublicationThe CHASE-PL (Climate change impact assessment for selected sectors in Poland) Forcing Data–Gridded Daily Precipitation & Temperature Dataset–5 km (CPLFD-GDPT5) consists of 1951–2013 daily minimum and maximum air temperatures and precipitation totals interpolated onto a 5 km grid based on daily meteorological observations from the Institute of Meteorology and Water Management (IMGW-PIB; Polish stations), Deutscher Wetterdienst...
-
Exhaust gas temperature measurements in diagnostic examination of naval gas turbine engines. Part I: Steady-state processes
PublicationThe article presents a possible method of detecting failures in the flow section and supply system of a naval gas turbine engine based on the exhaust gas temperature measured behind the gas generator. This temperature is a basic diagnostic parameter use for evaluating the technical state of the turbine engine in operation, and is monitored during engine start-ups, accelerations and decelerations of rotor units, and steady-load...
-
Comparison of traditional district heating with low temperature district heating systems featuring organic Rankine cycle and heat pump
PublicationPaper presents a comparison between a traditional district heating system with conventional boilers as a source of heat and electricity purchases from power utilities and a low temperature DH system incorporating the CHP with organic Rankine Cycle providing electricity and local heat pump raising the temperature of the DH fluid to the required temperature in the dwelling, meaning that both heat and electricity are produced within...
-
Advanced Electromagnetic Metamaterials for Temperature Sensing Applications
Publication -
Low-temperature high-pressure cryogelation of nanooxides
Publication -
Low temperature luminescence of KMgF3:Eu2+ crystal
Publication -
Temperature evolution of the luminescence decay of Sr0.33Ba0.67Nb2O6: Pr3+
Publication -
Room-Temperature Ferromagnetism in InSb-Mn Nanowires
Publication -
Temperature distribution in laser-clad multi-layers
Publication -
Temperature Measurements in Monitoring of Large Thrust Bearings
PublicationW pracy przedstawiono krytyczną ocenę popularnego systemu diagnostyki dużych łożysk wzdłużnych (np. łożysk nośnych hydrogeneratorów), w którym stosowany jest jednopunktowy pomiar temperatury w klockach łożyskowych. Stwierdzono, że taki układ pomiarowy nie pozwala na bezpieczną eksploatację łożysk, ponieważ posiada bardzo duże opóźnienie czasowe, nie daje informacji o lokalnych zagrożeniach, nie pozwala racjonalnie ustalić poziomów...
-
Temperature measurements in monitoring of large thrust bearings
PublicationW pracy przedstwiono krytyczną analizę aktualnych metod diagnostyki dużych hydrodnamicznych łożysk wzdłużnych hydrozespołów elektrowni wodnych. Wykazano niedostatki i zagrożenia płynące ze stosowania diagnostyki opartej na jednopunktowym pomiarze temperatury. Zaprezentowano wstępna koncepcję nowej metody diagnostycznej opartej na odwrotnym zagadnieniu przepływu ciepła (IPHC).
-
Temperature measurements in monitoring of large thrust bearings
PublicationW pracy przedstwiono krytyczną analizę aktualnych metod diagnostyki dużych hydrodnamicznych łożysk wzdłużnych hydrozespołów elektrowni wodnych. Wykazano niedostatki i zagrożenia płynące ze stosowania diagnostyki opartej na jednopunktowym pomiarze temperatury. Zaprezentowano wstępna koncepcję nowej metody diagnostycznej opartej na odwrotnym zagadnieniu przepływu ciepła.
-
Universal velocity and temperature profiles in bubbly flows.
PublicationW pracy przedstawiono model przepływu pęcherzykowego oparty na sumowaniu energii dysypacji pochodzącej od przepływu ścinającego bez pęcherzyków oraz dysypacji pochodzącej od obecności pęcherzyków. Rozwiązania równań różniczkowych opisujących model dają w wyniku uniwersalne profile prędkości i temperatur, które są bardzo przydatne w praktyce inżynierskiej.
-
Temperature distribution in laser-clad multi-layers
PublicationW pracy przedstawiono porownanie rezultatów numerycznej symulacji rozkładu temperatur w warstwach nakładanych laserowo z wynikami pomiarów doświadczalnych. Otrzymano bardzo dobrą zgodność wyników co pozwala wnioskować, że przedstawiony model numeryczny może służyć jako efektywne narzędzie wstępnego doboru parametrów procesu laserowego nakładania warstw.
-
Creep failure prediction of pipelines in elevated temperature
PublicationW pracy omówiono zastoswanie modelu konstytutytwnego pełzania pozwalającego na analizę trwałości metalowych ruruciągów pracujących w wysokich temperaturach. Zaprezentowano wyniki obliczeń opartych na metodzie elementów skończonych (MES) wykonanych z wykorzystaniem procedur użytkownika w komercyjnym programie MES. Porównano wyniki dla dwóch typów 4-węzłowych elementów powłokowych.
-
Parameters’ Identification of Perzyna and Chaboche Viscoplastic Models for Aluminum Alloy at Temperature of 120◦C
PublicationThe main purpose of this paper is the parameters identification of the Perzyna and the Chaboche models for the aluminum alloy at elevated temperature. The additional purpose is comparison of the results for these viscoplastic models. The results have been verified by the numerical simulation of the laboratory tests. The material parameters have been calculated on the basis of the uniaxial tension test. The determination of the...
-
Exhaust gas temperature measurements in diagnostic examination of naval gas turbine engines. Part II. Unsteady processes
PublicationThe second part of the article presents the results of operating diagnostic tests of a two- and three-shaft engine with a separate power turbine during the start-up and acceleration of the rotor units. Attention was paid to key importance of the correctness of operation of the automatic engine load control system, the input for which, among other signals, is the rate of increase of the exhaust gas flow temperature. The article...
-
LABORATORY STAND FOR INVESTIGATIONS OF THE QUICK - CHANGING TEMPERATURE OF GAS FLOWING IN THE PISTON COMPRESSOR OUTLET CHANNEL
PublicationThis paper presents a laboratory stand, created as a part of work on the doctor dissertation, intended for investigation of heat and flow processes taking place in the Espholin H3S piston compressor outlet channel. The test stand elements and their configuration within the stand are described. Discussed are also problems connected with the quick-changing measurement technique, solutions which have been proposed so far in that technology...
-
FFT analysis of temperature modulated semiconductor gas sensor response for the prediction of ammonia concentration under humidity interference
PublicationThe increasing environmental contamination forces the need to design reliable devices for detecting of the volatile compounds present in the air. For this purpose semiconductor gas sensors, which have been widely used for years, are often utilized. Although they have many advantages such as low price and quite long life time, they still lack of long term stability and selectivity. Namely, environmental conditions have significant...
-
Numerical analysis of high temperature minichannel heat exchanger for recuperative microturbine system
PublicationConsidering the development of energy sector, distributed small-scale power generation, e.g., gas micro-CHP, is attracting considerable interest. In such installations, the heat exchanger is one of the key components possessing a significant influence on overall performance. Most studies concentrate on units operating below 900C, which do not fulfil the requirements of gas micro-CHP. Therefore, there remains a challenge to design...
-
The Impact of Homogeneity of High Modulus Asphalt Concrete Layer on Low-Temperature Cracking
PublicationDuring winter season of 2012 numerous transverse cracks developed in high-modulus asphalt concrete (HMAC) base of newly constructed motorway. Pavement cracked both in transverse joint locations and in the area between them. Research which was conducted during investigation of the causes and mechanisms of cracking consisted of: field examination, laboratory testing of specimens cored out of the existing pavement, computational analyses...
-
Exhaust gas temperature measurements in diagnostic examination of naval gas turbine engines. Part III. Diagnostic and operating tolerances
PublicationThe third part of the article presents a method for detecting failures of the automatic engine control system with the aid of an exhaust gas temperature setter, specially designed and machined for this purpose. It also presents a procedure of identifying the operating tolerances and determining the diagnostic tolerances for the exhaust gas temperature recorded in the naval turbine engine during the start-up and acceleration processes....
-
Verification of the method of reconstructing convective velocity fields on the basis of temperature fields in vertical, differential and equally heated, open and closed channels
PublicationThis paper describes a method of reconstructing velocity fields, i.e. a numerical reconstruction procedure (NRP) that involves the numerical processing of experimentally measured temperature distributions in free convection heat transfer. The NRP consists in solving only the continuity and Navier–Stokes equations with an additional source term. This term is proportional to a known temperature (e.g. from a thermal imaging camera)...
-
Analysis of the Water Level Variation in the Polish Part of the Vistula Lagoon (Baltic Sea) and Estimation of Water Inflow and Outflow Transport through the Strait of Baltiysk in the Years 2008–2017
PublicationThe Vistula Lagoon is located in both Poland and Russia along the southern coast of the Baltic Sea. It is connected to the Baltic Sea in the Russian part by the Strait of Baltiysk. The purpose of the paper is to identify the dominant factors underlying the water level variation mechanism at Tolkmicko in the Vistula Lagoon, revealed by a statistical analysis of the measured data and a discussion on the inflow and outflow transport...
-
Investigation of Wood Flour Size, Aspect Ratios, and Injection Molding Temperature on Mechanical Properties of Wood Flour/Polyethylene Composites
PublicationIn the present research, wood flour reinforced polyethylene polymer composites with a coupling agent were prepared by injection molding. The effects of wood flour size, aspect ratios, and mold injection temperature on the composites’ mechanical properties were investigated. For the preparation of the polymer composites, five different formulations were created. The mechanical properties including tensile strength and the modulus,...
-
Temperature Coefficient of Electronic Polarizability in Thin Polymer Films Deposited on Si and SiO2 Substrates Determined via Spectroscopic Ellipsometry
PublicationEllipsometry is widely used to determine the thermo-optical properties of thin polymer films. However, if the thermo-optic coefficient (TOC) and the linear thermal expansion coefficient (LTEC) are to be used to determine the temperature coefficient of electronic polarizability (TCEP) in thin polymer films, their values must be determined with the greatest possible accuracy, as both have the opposite effect. In this article,...