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Fire Protection and Materials Flammability Control by Artificial Intelligence
PublicationFire safety has become a major challenge of materials developers because of the massive production of organic materials, often combustibles, and their use for different purposes. In this sense, fire safety is critically considered in the development of engineering materials [1, 2]. The multiplicity of parameters contributing to the development of formulation of flame-retardant materials from one side and the sustainability concerns...
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Nanosorbents as Materials for Extraction Processes of Environmental Contaminants and Others
PublicationThe aim of this work focuses on the application of nanomaterials (NMs) in different sorp- tive extraction techniques for the analysis of organic contaminants from environmental samples of distinct matrix compositions. Without any doubt, the integration of specific NMs such as carbona- ceous nanomaterials, magnetic nanoparticles (MNPs), metal–organic frameworks (MOFs), silica na- noparticles, and ion-imprinted NPs with so lid-phase...
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Wetting of different solid materials with solutions of surfactants mixtures
PublicationBadanie zdolności zwilżających mieszanin niejonowego surfaktantu gemini S-10 z surfaktantami anionowymi CsDS (dodecylosiarczan cezu) i LiDS (dodecylosiarczan litu). Badane powierzchnie różniły się stopniem hydrofobowości (szkło, stal, polimetakrylan metylu). Niektóre mieszaniny wykazywały synergizm w procesie zwilżania.
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ADVANCES IN MATERIALS SCIENCE EDITORIAL ON THE JOURNAL'S 20th ANNIVERSARY
PublicationEditorial on the occasion of the 20th anniversary of Advances in Materials Science journal.
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Some Introductory and Historical Remarks on Mechanics of Microstructured Materials
PublicationHere we present few remarks on the development of the models of microstuctured media and the generalized continua.
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A review of phase change materials and heat enhancement methodologies
PublicationPhase change materials (PCMs) are an efficient alternative to store and release heat at a specific range of temperature. Here PCMs and heat enhancement methodologies for PCM storage are reviewed. A short overview of PCMs and their applications is presented in addition to the progress during the last 10 years. Heat enhancement techniques, that is, extended surfaces, multiple and composite PCMs, and encapsulation techniques, are...
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Risks associated with the transportation of hazardous materials on public roads
PublicationA significant proportion of the transport of hazardous materials is carried out on public roads. Therefore, the safety of such transport is becoming increasingly important. Every catastrophe involving hazardous materials has a negative impact on direct road users and the surrounding environment, becauses its range is mostly not local. It follows that in the event of such catastrophe, its effects should be minimized. This is possible...
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Solid Phase Microextraction: Apparatus, Sorbent Materials, and Application.
Publicationhe primary objective of this review article is to strategically screen and highlight the advancements in the area of solid phase microextraction (SPME). The plenty of review articles have been written on different aspects of SPME, this review is dedicated to provide the brief but clear overview of the research footprints so produced from SPME. Some of the key advancements in types and designs, coating materials, coating strategies,...
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Influence of the grains shape on the mechanical behavior of granular materials
PublicationDiscrete Element Method is a numerical method suitable for modeling geotechnical problems concerning granular media. In most cases simple forms of grains, like discs or spheres, are used. But these shapes are capable of soil behavior modeling up to a certain point only, they cannot reflect all of the features of the medium (large shear resistance and large volumetric change). In order to reflect the complex behavior of the real...
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Influence of grain shape on the mechanical behaviour of granular materials
PublicationWe performed series of numerical vertical compression tests on assemblies of 2D granular material using a Discrete Element code and studied the results in regard to the grain shape. The samples consist of 5000 grains made either of 3 overlapping discs (clump - grain with concavities) or of six-edged polygons (convex grain). These two types of grains have a similar external envelope, ruled with a geometrical parameter α. In the...
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Further remarks on well posedness with in hypoplasticity for granular materials.
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Vibration transpotation of a viscoelastic raw materials in drying process.
PublicationPrzedstawiono zagadnienie transportu wibracyjnego surowca o własnościach lepko-sprężystych w procesie suszenia oraz propozycje rozwiązania technicznego umożliwiającego zastosowanie tego sposobu transportu w urządzeniach produkcyjnych. W rozwiązaniu tym zastosowano panele zawieszone na elementach sprężystych, których drgania sterowane są mikroprocesorowo w układzie sterowania w pętli sprzężenia zwrotnego w celu utrzymania właściwych...
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Modelling of shear zones in granular materials within hypoplasticity.
PublicationW artykule przedstawiono wyniki numerycznej analizy ściskania w płaskim stanie odkształcenia dla materiałów granulowanych. Obliczenia przeprowadzono z modelem hipoplastycznym rozszerzonym o obroty, nielokalność i gradienty odkształceń.
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Mathematical description and evaluation of cavitation erosion resistance of materials.
PublicationPrzedstawiono matematyczny opis erozji kawitacyjnej materiałów. Model opisuje wpływ własności mechanicznych materiału takich jak: względna odporność na plastyczne odkształcanie powierzchni a także współczynnika intensywności naprężeń wzmocnionej warstwy wierzchniej na przebieg erozji kawitacyjnej. Zaproponowano również nowy współczynnik opisujący ilościowo odporność kawitacyjną materiałów jako funkcję czasu inkubacji maksymalnej...
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Mathematical description and evaluation of cavitation erosion resistance of materials.
PublicationW pracy przedstawiono matematyczny model opisujący erozję kawitacyjną materiałów oparty o rozkład prawdopodobieństwa Weibulla. Model oposuje wpływ własności mechanicznych materiału na przebieg krzywych erozji kawitacyjnej.
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Role of reciprocating sliding testing in tribological materials engineering
PublicationPrzedstawiono wyniki badań oporu ruchu i zużycia skojarzeń o styku rozłożonym przy posuwisto-zwrotnym ślizganiu. Badano skojarzenia: żeliwo-stop aluminium przetapiany laserowo w warunkach kriogenicznych oraz żeliwo-kompozyt aluminium-żelazo otrzymany ''in situ''.
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Currents and photocurrents in organic materials determined by the interface phenomena
PublicationW pracy analizowany jest wpływ złącza materiał-elektroda na prądy i fotoprądy. W szczególności dyskutowane są mechanizmy iniekcji, fotogeneracji oraz transportu nośników ładunku. Rozważania teoretyczne uzupełniają wyniki badań doświadczalnych zarówno własne jak i literaturowe.
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Modeling of strain localization in granular and quasi-brittle materials
PublicationW artykule przedstawiono wyniki symulacji lokalizacji odkształceń w materiałach granulowanych i kruchych. Zasosowano różne modele w ramach mechaniki ośrodków ciągłych i dyskretnych. Wyniki obliczeń porównano z doswiadczeniami.
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Lattice method todescribe the behaviour of quasi brittle materials.
PublicationPrzedstawiono wyniki numerycznej symulacji propagacji rys przy zastosowaniu modelu kratownicowego. W modelu tym przyjęto ruszt elementów prętowych do symulacji kruszywa, zaczynu cementowego oraz więzi kontaktu.
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Effect of a charactereristic length on the behavior of quasi-brittle materials.
PublicationW artykule omówiono efekty skali w materiałach kruchych spowodowanych wielkością próbek. Obliczenia wykonano stosując MES na bazie nielokalnego prawa sprężysto-plastycznego rozszerzonego o czynniki nielokalne. Analizę przeprowadzono dla próbek rozciaganych i zginanych.
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[Rozdział] 6. Materiały odniesienia
PublicationPrzedstawiono charakterystykę poszczególnych typów materiałów odniesienia. Opisano sposoby ich wytwarzania oraz cechy jakie powinny spełniać wraz z metodami ich wyznaczania. Podano przykłady materiałów odniesienia ze szczególnym uwzględnieniem substancji gazowych. Opisano i scharakteryzowano sposoby kalibracji.
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Materiały źródłowe dla kanalizacji
PublicationWarunki projektowania oraz funkcjonowania kanalizacji oraz rozwiązania materiałowe ulegają szybkim zmianom. Równocześnie zmieniają się wymagania w stosunku do wykonawstwa. Znaczna część piśmiennictwa nie odpowiada aktualnym wymaganiom. Przedstawiono wykaz podstawowych aktualnych prac z zakresu kanalizacji.
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Bacterial cellulose vs. bacterial cellulose nanocrystals as stabilizer agents for O/W pickering emulsions
PublicationThe growing interest in Pickering emulsions in functional food systems resulted in the need to find suitable stabilizers for them. The work considers the use of bacterial cellulose for this purpose, and its aim was to compare the properties of disintegrated bacterial cellulose, before and after freeze-drying, and its nanocrystals obtained using H2SO4 under variable of time and concentration conditions. The structure of nanocrystals...
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Add‐on therapy with doxazosin in patients with hypertension influences arterial stiffness and albuterol‐mediated arterial vasodilation
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MATERIAŁY I ELEMENTY STOSOWANE DO WYKONANIA LEKKIEJ OBUDOWY cz. 1. Materiały metalowe
PublicationW artykule przedstawiono stosowane w lekkich obudowach materiały metalowe i kształtowane z nich wyroby. Omówiono charakterystyczne parametry i różnice technologiczne występujące w produkcji wyrobów. Przedstawiono ocenę odporności korozyjnej materiałów.
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Thermophysical Properties of the Phase Change Material Mixtures – Preliminary Studies on Macromolecular Hydrocarbons Example.
PublicationThe aim of this work is a theoretical and experimental analysis of the macromolecular hydrocarbons mixtures composition and the impact on thermophysical parameters of the phase change materials (PCM) made from these mixtures. The analysis of the current state of knowledge extended by the author's own studies have been presented. Thermophysical characteristics of the hydrocarbons and their mixtures have been specified, in such a...
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Fabrication of 3D graphene/MoS2 spherical heterostructure as anode material in Li-ion battery
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Carbon nanotubes decorated by mesoporous cobalt oxide as electrode material for lithium-ion batteries
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Waste-based nanoarchitectonics with face masks as valuable starting material for high-performance supercapacitors
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Analysis of the Toxic Element Concentrations in the Mesozoic Siliceous Rocks in Terms of the Raw Material Importance
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The Material Anisotropy Influence on Modelling of Rutting Test with Application of Linear Viscoelasticity Constitutive Equations
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Public Attitudes toward Biobanking of Human Biological Material for Research Purposes: A Literature Review
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Thermophysical properties of the phase change material mixtures – preliminary studies on macromolecular hydrocarbons example.
PublicationThe aim of this work is a theoretical and experimental analysis of the macromolecular hydrocarbon mixtures composition and the impact on thermophysical parameters of the phase change materials (PCM) made from these mixtures. The analysis of the current state of knowledge extended by the author’s own studies have been presented. Thermophysical characteristics of the hydrocarbons and their mixtures have been specified, in such a...
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Application a laboratory stand for multi-symptoms tests for high cyclic fatigue of constructional material
PublicationThis paper describes a need of diagnostics present ship plants according to current technical state. In order to reach competent physical quantity describing fatigue of materials by congregated energy. This paper describes using some diagnostics methods (acoustic emission AE, vibration, thermovision, deformation) in order to definition fatigue state of construction material. The author tries to find correlation between measured...
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EFFECT OF WORKING FLUID SELECTION ON THERMAL PERFORMANCE OF HEAT EXCHANGER FILLED BY THE POROUS MATERIAL
PublicationThermal management of electronics semiconductor technologies that are located i.e. in a novel marine power plants or computer server rooms become very important issue for designers of such systems. Motivation and need for research in development of novel cooling strategies for modern electronics is of paramount importance. Heat exchangers filled by the porous material are a novel research topic in current heat pipe science. The...
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Electrochemical activity and characterization of hybrid material consisted of poly(3,4- ethylenedioxythiophene) and silver hexacyanocobaltate
PublicationPrac przedstawiono charakterystykę elektrochemiczną oraz powierzchniową materiału hybrydowego składającego się z polimeru przewodzącego, poli(3,4-etylenodioksytiofenu) oraz nieorganicznej sieci typu redoks, heksacyjanokobaltanu srebra. Materiał scharakteryzowano technikami jak AFM, SEM. Skład materiału oznaczono za pomocą mikroanalizy rentgenowskiej EDX. Analiza potwierdziła obecność sieci nieorganicznej w materiale. Proporcja...
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Modelling water flow in unsaturated porous media: Accounting for nonlinear permeability and material heterogeneity
PublicationW pracy przedstawiono problematykę matematycznego modelowania przepływów w nienasyconych ośrodkach porowatych, ze szczególnym uwzględnieniem dwóch aspektów. Pierwszym z nich jest obliczanie średniego współczynnika przewodności hydraulicznej między węzłami siatki w numerycznym rozwiązaniu równania przepływu nienasyconego. Drugim zagadnieniem jest wpływ lokalnej zmienności parametrów ośrodka porowatego (współczynnika przewodności...
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Carbon Nanomaterials From Metal-Organic Frameworks: A New Material Horizon for CO2 Reduction
PublicationThe rise of CO2 in the atmosphere, which results in severe climate change and temperature increase, is known as the major reason for greenhouse effect. Reducing CO2 to value-added products is an attractive solution to this severe problem, along with addressing the energy crisis, to which the catalysts being employed are of vital importance. Due to their high porosity and tunable compositions, Metal-Organic Frameworks (MOFs) show...
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The Impact of Material Selection on Durability of Exhaust Valve Faces of a Ship Engine – A Case Study
Publicationwo alloys were used in order to extend the service life of marine engine exhaust valve head. Layers of cobalt base alloys were made of the powders with with chemical composition as follow: the layer marked L12; C-1,55%; Si-1,21%; Cr-29,7%; W-9%; Ni-2%; Mo<0,01%; Fe-1,7%; Co-54,83% and the layer marked N; C-1,45%; Co-38,9%; Cr-24,13%; Ni-10,43%; W-8,75%; Fe-7,64%; Mo-7,56%; Si-2,59%. Base metal was valve steel after heat treatment....
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Production of Biogas from Distillation Residue as a Waste Material from the Distillery Industry in Poland
PublicationIn this paper, the possibility to obtain an alternative source of energy from methane fermentation, catalysed by biomass, has been discussed in detail. As a main substrate, the distillation residue from the distillery industry was taken in the case of mono-fermentation and its co-fermentation with sewage sludge. The results showed that higher biogas and methane production can be obtained in a mono-fermentation process. Fermentation...
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A mixture of cellulose production waste with municipal sewage as new material for an ecological management of wastes
PublicationChemical contaminants present in cellulose production waste and municipal sewage sludge condition the necessity to treat these wastes before they are introduced into the environment. Environmental use of the these wastes appears to be justified owing to the content of organic substances as well as the considerable fertilising value. The aim of the study was to assess chemical composition and ecotoxicity of cellulose production...
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Airstrip Ground Improvement Works by Blasting Charge Technique and Dredged-Ash Material Mixture
PublicationSoil improvement by blasting charge technique is known in geotechnics as one of the efficient and inexpensive method. It can be used in preparing of underground to found road construction and buildings as well. The technique proves usefulness especially when dynamic load is applied. It is because of non-stiff or rather resilient type soil after improvement. In noncohesive or organic soil, blasting charge...
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Weakly non-local theories of damage and plasticity based on balance of dissipative material forces
PublicationWykazano, że założenie o siłach materialnych oraz odpowiadających im równaniach równowagi w połączeniu z klasycznymi prawami dynamiki w przestrzeni fizycznej, pozwoliło na sformułowanie teoretycznych podstaw w zakresie słabo-nielokalnych gradientowych modeli zniszczenia i plastyczności. Odpowiednie równania równowagi w przestrzeni fizycznej i materialnej oraz pierwsze i drugie prawo termodynamiki zapisano w postaci całkowej. Następnie...
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Polarization-sensitive optical coherence tomography for ceramic materials inspection
PublicationCeramics production is looking for a fast, reliable and non-destructive method that can be implemented on site for defect detection and analysis. In this paper we present polarization-sensitive optical coherence tomography (PS-OCT) as a method for defect inspection. Proposed extensions to standard OCT provide additional information for complete characterization of tested object. We compare OCT and microscope imaging that can easily...
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The effect of surfactants mixtures composition on wetting of different solid materials
PublicationThe wetting properties of surfactants mixtures were investigated. Three types of compounds were used: nonionic gemini α, α'-[2,4,7,9-tetramethyl-5-decyne-4,7-diyl]bis[ω-hydroxyl-olioxyethylene] (S-10), anionic sodium dodecyl sulphates (SDS) and cationic dodecyl trimethyl ammonium bromide (DTAB). The materials used in wetting experiments were steel and methyl polymethacrylate. These materials differ...
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Optical time of flight spectroscopy for highly scattering materials measurements.
PublicationW artykule omówiono możliwości wykorzystania optycznej spektroskopii czasu przelotu w wyznaczaniu podstawowych parametrów optycznych materiałów silnie rozpraszających światło. Wykorzystano tu metodę Monte Carlo i metodę dyfuzji.
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N-doped carbon materials as electrodes for highly stable supercapacitors
PublicationThis article reports a strategy to use nitrogen-doped carbon materials as electrodes for supercapacitors. Depending on the carbon precursor, the porous structure is changed with specific surface area reached up to 2270 m2 g−1. The capacitance of carbon materials used as electrodes is related strictly to pore size. The microstructure and nitrogen functionalities enable a high capacitance (327 F g−1) and cycle durability. The nanoporous...
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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...
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Enhanced supercapacitor materials from pyrolyzed algae and graphene composites
PublicationThis study focuses on the synthesis and characterization of supercapacitor materials derived from pyrolyzed natural compounds. Four compounds were investigated: methylcellulose with lysine (ML), methylcellulose with lysine-graphene composite (MLG), algae (A), and algae-graphene composite (AG). The pyrolysis process was utilized to convert these natural compounds into carbon-based materials suitable for supercapacitor applications....
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A Monte Carlo Strategy to simulate Positrons and Positronium in biological Materials
PublicationWe present an algorithm for Monte Carlo simulations of positron tracks in biological materials. The algorithm takes into account the cross-section data for elastic and inelastic collisions between positrons and molecules and processes like direct annihilation, ionization and positronium formation. In the case of positronium formation, the algorithm considers the interactions of positronium with molecules. The algorithm can be used...