Filters
total: 5516
filtered: 4301
-
Catalog
- Publications 4301 available results
- Journals 209 available results
- Conferences 1 available results
- People 322 available results
- Inventions 20 available results
- Projects 38 available results
- Laboratories 1 available results
- Research Teams 7 available results
- e-Learning Courses 127 available results
- Events 13 available results
- Open Research Data 477 available results
Chosen catalog filters
displaying 1000 best results Help
Search results for: polimery koordynacyjne metali przejsciowych
-
Prussian Blue Analogues Cubes in the Organic Polymer Electrospun Fibres
Publication -
Raman system for on-line monitoring and optimisation of hybrid polymer gelation
PublicationW artykule przedstawiono system do monitorowania ramanowskiego reakcji żelowania w procesie zol-żel syntezy organiczno-nieorganicznych polimerów hybrydowych. System pomiarowy umożliwił wykonywanie pomiarów zdalnych, bez wkonieczności wprowadzania jego elementów do wnętrza komory reakcyjnej. Konstrukcja systemu zapewniła szeroki zakres pomiarowy od 200 do 3500 cm-1, przy odpowiednio wysokiej czułości i wyeliminowniu wpływu fluorescencji....
-
Raman system for monitoring of dye doping to hybrid polymer network
PublicationZrealizowano i przedstawiono system ramanowski do zdalnego monitorowania procesu zol-żel, dedykowany do monitorowania procedury wprowadznia cząstek barwnika do sieci polimeru hybrydowego. System umożliwia wykonywanie pomiarów zdalnych, bez zakłócania i przerywania przebiegu procesu technologicznego. Zademonstrowano i skomentowano wyniki pomiarów dla przykładowego procesu.
-
Recent Progress in Polymer Waste-Derived Porous Carbon for Supercapacitors
Publication -
Application of polymer element in reduction of temporary steel grandstand vibrations
PublicationThe numerical analysis focused on reduction of vibrations of a temporary steel scaffolding grandstand has been conducted in this paper. These types of structures are regularly subjected to dynamic loads which, in conjunction with light and quite slender structural members, may induce dangerous vibrations. To increase their safety, temporary steel grandstands are usually strengthened with the diagonal stiffeners of tubular cross...
-
Experimental study on the effectiveness of polymer dampers in reduction of structural vibrations
PublicationVibrations of civil engineering structures, generated by dynamic loads, may be very dangerous to the structures themselves as well as may have significant influence on human perception and comfort. A number of different methods have been proposed in order to minimize such situations. This concern newly designed structures as well as those which dynamic properties have to be modified due to problems with excessive vibrations. One...
-
Spectroscopic investigations into degradation of polymer membranes for fuel cells applications
Publication -
Thermal properties of dense polymer-derived SiCN(O) glasses
Publication -
Polyaryletherketone polymer nanocomposite engineered with nanolaminated Ti3SiC2 ceramic fillers
Publication -
Multichannel taste sensors with lipid, lipid like – polymer membranes
Publication -
Polymerization and Structure of Opposing Polymer Brushes Studied by Computer Simulations
Publication -
Vibrational Spectroscopy in Analysis of Stimuli-Responsive Polymer–Water Systems
Publication -
Experimental study on effectiveness of polymer dampers in reduction of structural vibrations
PublicationVibrations of civil engineering structures, generated by dynamic loads, may be very dangerous to the structures themselves as well as may have significant influence on human perception and comfort. A number of different methods have been proposed in order to minimize such situations. This concern newly designed structures as well as those which dynamic properties have to be modified due to problems with excessive vibrations. One...
-
Compliance tests of the polymer layers used as hydrodynamic bearing coatings
PublicationOperational experience and scientific investigations results showed that polymer lined hydrodynamic bearings can withstand more severe operating conditions compared than white metal bearings. PTFE and PEEK-based coatings are the most frequently used as Babbitt alternatives. Both polymers differ significantly from the each other in material properties. According to catalogue data compression modulus of PTFE, it is about an order...
-
Experimental study on polymer mass used to repair damaged structures
PublicationA new method of repairing damaged structures by injecting the cracks with specially designed polymer mass (flexible two-component grout based on polyurethane resin) has been recently proposed. The technique is mainly dedicated to damaged masonries, especially historical structures where minimum intervention is permitted. The cracks are filled with the special injection, forming the flexible joints bonding the disrupted structural...
-
Effect of polymer fibres reinforcement on selected properties of asphalt mixtures
PublicationThe paper presents selected results of the research program concerning fibre reinforced asphalt concrete. Aramid-polyalphaolefin fibres was used in this study. Selected properties responsible for low temperature cracking and resistance to permanent deformation are presented in this paper. Low temperature cracking susceptibility was evaluated with the results obtained from bending test of rectangular beams with constant rate of...
-
Experimental and numerical analysis of an aluminum cantilevered beam with polymer adhesive
PublicationIn this paper, experimental and numerical investigation on a composite cantilevered aluminum beam has been conducted. The subject of the study consists of two plain aluminum elements bonded with polymer adhesive of different thickness. It has been proven in the previous study that this kind of material has high damping properties. During an experimental investigation, value of damping ratios have been obtained. The aim of a numerical...
-
The Effectiveness of Polymer Damper in Damage Reduction of Temporary Steel Grandstand
PublicationA large number of accidents involving damage of temporary grandstands during different types of events were observed in the past. The aim of the paper is to analyse numerically the effectiveness of a polymer damper in damage reduction of a temporary steel scaffolding grandstand exposed to dynamic load due to jumping. The element has been installed as a diagonal one at the back part of the structure. The method has been compared...
-
Recent advances in compatibilization strategies of wood-polymer composites by isocyanates
PublicationWood-polymer composites technologies are gaining more and more attention in the scientific community, positively affecting the increase in their industrial applications, for example, automotive, building, 3D printing, etc. Many research works are focused on the improvement in matrix–lignocellulosic filler interactions to produce highly filled composites with satisfying performance properties. In this field of research, using isocyanates...
-
Copper-based 2D-coordination polymer as catalyst for allylation of aldehydes
PublicationA copper-tartrate, [Cu2(Tart)2(H2O)2]·4H2O, was synthesized at room temperature in aqueous media using copper chloride and D-tartaric acid. The compound crystallizes in the monoclinic system P21 space group and was characterized by infrared spectroscopy, thermogravimetry, X-ray powder diffraction and the results are in good agreement with the single crystal...
-
Recent Advances in Development of Waste-Based Polymer Materials: A Review
PublicationLimited petroleum sources, suitable law regulations, and higher awareness within society has caused sustainable development of manufacturing and recycling of polymer blends and composites to be gaining increasing attention. This work aims to report recent advances in the manufacturing of environmentally friendly and low-cost polymer materials based on post-production and postconsumer wastes. Sustainable development of three groups...
-
A New Microwave Ceramic – Polymer Composite with 0-3 Connectivity
PublicationGoal of the present research was to fabricate and study two-phase BiNbO4//PVDF composites with 0-3 connectivity. Such composite consists of there-dimensionally connected polymer matrix loaded with dielectric ceramic particles. In the present case BiNbO4 powder acted as an active phase (dispersed phase) whereas polyvinylidene fluoride (PVDF) acted as a non-active (passive) phase (matrix). BiNbO4//PVDF composites with the volume...
-
Usuwanie i podział fazowy metali ciężkich w ekosystemie oczyszczalni hydrofitowej zasilanej odciekami ze składowiska odpadów komunalnych
PublicationWyniki badań stężeń metali w odciekach i osadach dennych pochodzących z hydrofitowej oczyszczalni odcieków ze składowiska odpadów komunalnych w Örebro w Szwecji. Analizowany obiekt jest systemem o przepływie powierzchniowym, złożonym z 10 stawów zasiedlonych roślinnością hydrofitową. Zastosowany system zapewnia wysokie efektywności usuwania zanieczyszczeń z odcieków, co umożliwia ich odprowadzanie do odbiornika - cieku wodnego...
-
Combining tight-binding and molecular dynamics methods to model the behaviour of metals in the plastic regime
PublicationOpisujemy zastosowanie metody dwuskalowej (kwantowo-klasycznej) w zastosowaniu do metali. Region energetycznie najważniejszy jest traktowany kwantowo, podczas gdy reszta układu jest traktowana klasycznie. Wprowadzamy własną implementację metody oraz przedstawiamy uzyskane wyniki dla metali.
-
Simultaneous Removal of Heavy Metals from Wastewater Using Modified Sodium Montmorillonite Nanoclay
Publication -
The K x-ray line structures of the 3d-transition metals in warm dense plasma
Publication -
STUDYING THE PROCESS OF OBTAINING PHOSPHATES OF METALS BASED ON THE PHASE EQUILIBRIA OF FOUR COMPONENT SYSTEMS
Publication -
Synthesis of carbon nanotubes via chemical vapor deposition by using rareearth metals as catalysts
Publication -
Current and future emissions of selected heavy metals to the atmosphere from anthropogenic cources in Europe
PublicationPrzedstawiono wyniki obliczeń emisji As, Cd, Cr, Ni i Pb do powietrza ze źródeł antropogennych w Europie. Obecnie spalanie paliw jest głównym źródłem emisji As, Cd, Cr i Ni (powyżej 50 % ogólnej emisji tych metali), natomiast spalanie benzyny jest głównym źródłem emisji Pb. Zaobserwowano ciągłą redukcje emisji tych metali w Europie w ciagu ostatnich 40 lat. Powiększający się stan wiedzy nt. źródeł, emisji oraz transportu i zachowania...
-
Spectral criterion for high-cycle fatigue of anisotropic metals under multiaxial random loads
PublicationPraca 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...
-
High-cycle fatique criterion for anisotropic metals under multiaxial constant and periodic loads
PublicationPrzedmiotem 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...
-
Calix[4]Arenes Appended with Thioamide Moieties as Powerful Tool for Heavy Metals Recognition
Publication -
Bioaccumulation of selected metals in bivalves (Unionidae) and Phragmites australis inhabiting a municipal water reservoir
Publication -
Spectral criterion for high-cycle fatigue of metals under multiaxial static and stochastic loading.
PublicationPraca 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...
-
Ongoing progress on novel nanocomposite membranes for the separation of heavy metals from contaminated water
PublicationMembranes, as the primary separation element of membrane-based processes, have greatly attracted the attention of researchers in several water treatment applications, including wastewater treatment, water purification, water disinfection, toxic and non-toxic chemical molecules, heavy metals, among others. Today, the removal of heavy metals from water has become challenging, in which chemical engineers are approaching new materials...
-
Anthropogenic trace metals in Setiu Wetland: Spatial and seasonal distribution and implications for environmental health
PublicationThe growing urban wastewater volume poses a major global environmental challenge, especially in developing nations where inadequate treatment and discharge impact clean water availability. This study focused on Setiu Wetland, aiming to analyze seasonal and spatial variations of trace metals in particulate form from anthropogenic and pathogenic sources. Surface water samples were collected from multiple stations, measuring physical...
-
The role of noble metals in TiO2 nanotubes for the abatement of parabens by photocatalysis, catalytic and photocatalytic ozonation
PublicationThe role of modified TiO2 nanotubes (TNTs) with noble metals was studied for photocatalysis, catalytic and photocatalytic ozonation of a paraben’s mixture. The TNTs were obtained by anodization and were modified by photodeposition with 0.25 mol% of Au, Pt or Pd. Results showed that solar photocatalysis led to higher degradation than UVA radiation, and under UVA radiation, the use of 3 Pt-TNTs (3 TNTs plates modified with Pt) and...
-
Impact of chitosan/noble metals-based coatings on the plasmochemically activated surface of NiTi alloy
Publication -
Current and future emissions of selected heavy metals to the atmosphere from anthropogenic cources in Europe
Publication -
The Role of Organic and Inorganic Amendments in Carbon Sequestration and Immobilization of Heavy Metals in Degraded Soils
Publication -
Bacterial ACC Deaminase Activity in Promoting Plant Growth on Areas Contaminated with Heavy Metals
Publication -
Calix[4]arenes appended with thioamide moieties as powerful tool for heavy metals recognition
PublicationSelectivity of new thioamide derivatives was assessed using those ligands as sensor materials in ion-selective membrane electrodes and tested towards Pb2+ - selectivity. The influence of the nature of the thioamide function (linear, branched or cyclic substituents) on their ionophoric properties was investigated. Electrodes based on cyclic thioamide moieties are promising analytical tools for monitoring Pb2+ concentration in natural...
-
Distribution and removal efficiency of heavy metals in two constructed wetlands treating landfill leachate
PublicationThe results of heavy metals (Fe, Mn, Zn, Ni, Cu, Cr, Pb, Cd) removal and partitioning between aqueous and solid phases at two wetlands (TWs) treating municipal landfill leachates are presented. One of the TWs is a surface flow facility consisting of 10 ponds. The other TW is a newly constructed pilot-scale facility consisting of three beds with alternately vertical and horizontal sub-surface flow. The metals concentrations were...
-
Krytyczny przegląd założeń metody badań nieniszczących opartej na ''Magnetycznej Pamięci Metalu''
PublicationPraca konfrontuje założenia metodyki MMM, powszechnie stosowanej w polskich instalacjach energetycznych, z aktualną wiedzą na temat zjawisk magnetosprężystych. Analiza bibliograficzna i rozważania sprzężeń zjawisk mechanicznych i magnetycznych prowadzą do wniosku, że potencjał metody jest przez jej promotorów przeszacowany.
-
Land development and forms of heavy metals occurrence (zn, cd, pb) in polish rivers
PublicationEkosystemy rzeczne podlegają intensywnej antropopresji. Metale ciężkie występujące w glebie i osadach dennych w różnych formach specjacyjnych mają istotny wpływ na wtórne zanieczyszczenie wody ze względu na takie procesy jak migracja, akumulacja i biowzbogacanie.Przedmiotem badań były próbki gleby, osadów dennych oraz wody pobrane z różnych rzek z południowej części województwa świętokrzyskiego. W trakcie badań próbek wykorzystano...
-
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...
-
Structural and catalytic properties of ceria layers doped with transition metals for SOFCs fueled by biogas
PublicationThe aim of this paper was to investigate an influence of the nanocrystalline Ce0.8A0.2O2-δ (A = Mn, Fe, Co, Ni, Cu) materials on the direct internal reforming of biogas in SOFC. Structural analysis of fabricated compounds has been done. An in-situ analysis of a composition of outlet gases from operating SOFC was performed using FTIR spectroscopy with simultaneous electrical tests. It was found out, that type of dopant strongly...
-
Waste management in the mining industry of metals ores, coal, oil and natural gas - A review
PublicationWaste generated due to mining activity poses a serious issue due to the large amounts generated, even up to 65 billion tons per year, and is often associated with the risk posed by its storage and environmental management. This work aims to review waste management in the mining industry of metals ores, coal, oil and natural gas. It includes an analysis and discussion on the possibilities for reuse of certain types of wastes generated...
-
Heavy Metals in Sediments of Urban Streams: Contamination and Health Risk Assessment of Influencing Factors
PublicationSediments of two urban streams in northern Poland outflowing to the Baltic Sea were assessed to explain the spatial variation in relation to urbanization level of the catchment, the role of retention tanks (RTs) and identification of pollution level. During the 3 month period of investigation sediment samples were collected from the inflow (IN) and outflow (OUT) of six RTs located on streams for flood protection. Six heavy metals...
-
Review of cigars and cigar-type products as potential sources of consumer exposure to heavy metals
PublicationThe popularity of cigars, growing since 1993, has not gone hand in hand with the increased interest of researchers in these products. Although the literature widely describes the harmfulness of tobacco and the content of toxic substances in tobacco products, the topic is often treated selectively as relating primarily to cigarettes and rarely extends to other products of the broadly defined tobacco industry. However, there is no...