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wyświetlamy 1000 najlepszych wyników Pomoc
Wyniki wyszukiwania dla: fatty raw materials
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Physics of Materials _ Laboratory 2022_2023
Kursy Online -
Physics of Materials _ 2023/2024
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Computer design of materials 202324
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Study of Applying Naturally Occurring Mineral Materials for Silicone Pressure-Sensitive Adhesives
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Characteristics of Particles Emitted from Waste Fires—A Construction Materials Case Study
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Ruthenium(II) and Iridium(III) Complexes as Tested Materials for New Anticancer Agents
PublikacjaThe oncological use of cisplatin is hindered by its severe side eects and a very important resistance problem. To overcome these problems, scientists have attempted to design new generation transition-metal anticancer complexes. In this study, we present new complexes, ruthenium(II) [(6-p-cymene)RuCl(py2CO)]PF6 (1), iridium(III) [(5-Cp)IrCl(py2CO)]PF6 (2), and NH4[IrCl4(py2CO)]H2O (3), based on di-2-pyridylketone (py2CO). The prepared...
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ADVANCED MATERIALS
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Frontiers in Materials
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MECHANICS OF MATERIALS
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MATERIALS CHARACTERIZATION
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Tribological Properties of Thermoplastic Materials Formed by 3D Printing by FDM Process
PublikacjaThe dataset entitled 3D printed ABS thermoplastic vs. steel. Dry sliding wear test in constant load & velocity ring on flat configuration. Test parameters: print layer thickness and orientation. Test symbol: 019_h_4 contains: the time base (expressed in seconds and minutes), the friction torque for sliding friction, rotational velocity of the counter – specimen (velocity of sliding), friction coefficient, load in the friction contact...
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Identification and characterization of tetracycline resistance in Lactococcus lactis isolated from Polish raw milk and fermented artisanal products
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Occurrence of antibiotic resistance among Enterobacterales isolated from raw and ready-to-eat food – phenotypic and genotypic characteristics
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Materials Technology, W/L, DaPE, sem. 02, letni 21/22 (PG_00040170)
Kursy Online1. Engineering materials.2. Manufacturing technologies3. Metallurgy.4. Steelmaking.5. Molding (casting).6. Metal forming.
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The effect of high pressure and sub-zero temperature on total antioxidant capacity and the content of vitamin C, fatty acids and secondary products of lipid oxidation in human milk
PublikacjaThe objective of this study was to compare of the effects of high pressure of 193 MPa at - 20°C and Low Temperature Long Time pasteurization (LTLT or holder pasteurization, 62,5°C; 30 min) on the content and composition of fatty acids (FAs), concentrations of secondary products of lipid oxidation (TBARS), the total antioxidant capacity (TAC), total vitamin C and ascorbic acid (AsA) content in human milk. It was shown that no significant...
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Materials for Mediator-free Electron Transfer in the Enzymatic Electrodes of Biobatteries and Biofuel Cells
PublikacjaWe present functionalization of single-walled carbon nanotubes (SWCNTs) and their application in the enzymatic fuel cells construction. SWCNTs were covalently modified with different types of aromatic moieties. Free radical reaction was employed to create direct carbon-carbon bond between moiety and SWCNTs. In second approach functionalization takes place through amide bonding. Functionalized SWCNTs were characterized by spectroscopy...
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Raw data for the paper "Mutually polarizable QM/MM model with in situ optimized localized basis functions"
Dane BadawczeThis dataset contains raw data used to generate plots in the paper Mutually polarizable QM/MM model with in situ optimized localized basis functions. The paper is devoted to a second generation of the TINKTEP model -- an QM/MM approach combining linear-scaling DFT (ONETEP) and a polarizable force field (AMOEBA).
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Mechanical Properties of Additively Manufactured Polymeric Materials—PLA and PETG—For Biomechanical Applications
PublikacjaThe study presented herein concerns the mechanical properties of two common polymers for potential biomedical applications, PLA and PETG, processed through fused filament fabrication (FFF)—Material Extrusion (ME). For the uniaxial tension tests carried out, two printing orientations—XY (Horizontal, H) and YZ (Vertical, V)—were considered according to the general principles for part positioning, coordinates, and orientation typically...
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Iron(III)-selective materials based on a catechol-bearing amide for optical sensing
PublikacjaThe synthesis and ion-binding properties of a new amide L derived from 3,4-dihydroxybenzoic acid are described. Due to the presence of a catechol unit, the compound interacts selectively with iron(III) in organic solvent (dimethyl sulfoxide, DMSO) to produce a color change from pale yellow to green. The incorporation of the ligand L into polymeric matrices or its encapsulation into surfactant-based spheres enables analyte detection...
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Enzymatically catalyzed furan-based copolyesters containing dimerized fatty acid derivative as a building block
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Biofortification of Hens Eggs with Polyunsaturated Fatty Acids by New Dietary Formulation: Supercritical Microalgal Extract
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Fatty Acids Composition of Mustard Oil from Two Cultivars and Physico-chemical Characteristics of the Seeds
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Expression Changes in Fatty acid Metabolic Processrelated Genes in Porcine Oocytes During in Vitro Maturation
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Studies on development of headspace - gas chromatographic determination of volatile fatty acids in troublesome environmental samples
PublikacjaBadania nad opracowaniem procedur oznaczania LKT w silnie zanieczyszczonych próbkach środowiskowych za pomocą techniki analizy fazy nadpowierzchniowej w połączeniu z chromatografią gazową z wykorzystaniem detektora płomieniowo-jonizacyjnego na etapie oznaczeń końcowych. Dobrano warunki ekstrakcji LKT do fazy nadpowierzchniowej oraz warunki chromatograficzne. Metodyka pozwala oznaczać LKT w bardzo skomplikowanych próbkach ciekłych...
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Esterification kinetics of glycerol with fatty acids in the presence of zinc carboxylates: Preparation of modified acylglycerol emulsifiers.
PublikacjaZbadano zależności kinetyczne estryfikacji glicerolu kwasami tłuszczowymi (C12:0 - C18:0), prowadzonych w obecności soli cynku tych kwasów tłuszczowych. Przeanalizowano wpływ temperatury, stężenia karboksylanu oraz budowy części hydrofobowej kwasu tłuszczowego i karboksylanu, na postęp reakcji estryfikacji. Wyznaczono wartości odpowiednich stałych szybkości reakcji, energii aktywacji oraz maksymalnej zawartości monoestru glicerolu,...
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Determination of PAHs, PCBs, minerals, trace elements and fatty acids in Rapana thomasiana as an indication of pollution
PublikacjaW trakcie badań wykorzystano różne metodyki analityczne do oznaczania zawartości szerokiego spektrum składników (anality z grupy WWA i PCB), metali ciężkich i innych pierwiastków oraz kwasów tłuszczowych w próbkach tkanek miękkich mięczaków morskich pochodzących z miejsc o różnym poziomie antropopresji (obszary zanieczyszczone i niezanieczyszczone w bułgarskiej strefie przybrzeżnej Morza Czarnego).Analiza statystyczna uzyskanych...
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MATERIALS SCIENCE FORUM
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Application of the expanded clay aggregate in form of granular materials for water treatment
PublikacjaThe paper aimed to evaluate the efficiency of Filtralite MonoMulti compared to the conventional dual-media filter beds comprising silica sand layer covered with anthracite coal. Filtralite media are composed of processed (expanded), highly porous clay products characterized by relatively rough grain surfaces. In order to compare these different media filters in a reliable way, the pilot filter columns operated in parallel, under...
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Influence of Thermal Decomposition of Wood and Wood-Based Materials on the State of the Atmospheric Air. Emissions of Toxic Compounds and Greenhouse Gases
PublikacjaThis paper presents the energy characteristics of wood and wood-based materials in the form of commercially available pellets, furniture board (MDF) and OSB. Toxicometric indices were determined for gaseous destructs arising from thermal decomposition and combustion of the materials studied. The paper proves that combustion conditions are crucial in terms of toxic destructive emissions. It has been shown that the combustion of...
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Simulations of Shear Zones and Cracks in Engineering Materials Using eXtended Finite Element Method
PublikacjaNumerical simulations of cracks and shear zones in quasi-brittle materials are presented. Extended Finite Element Method is used to describe both cracks and shear zones. In a description of tensile cracks, a Rankine criterion is assumed. A discrete Mohr-Coulomb law is adopted for simulations of shear zones. Results of simple numerical tests: unixial tension, bending and biaxial compression are demonstrated.
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Selection of material for X-ray tomography analysis and DEM simulations: comparison between granular materials of biological and non-biological origins
PublikacjaPhysical properties and X-ray tomography images of five different granular materials: glass bead, glass grit, short grain white rice, sorghum and clay granules (Seramis) are investigated to select the most promising materials for numerical simulations and time-lapse X-ray tomography imaging. The examined materials represent granular materials of non-biological origin (glass bead, glass grit and Seramis) and granular plant materials...
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Comparison of antimicrobial activity of selected, commercially available wound dressing materials
PublikacjaOBJECTIVE: The aim of our study was to examine the antimicrobial potential of eight selected, commercially available wound dressings containing different antimicrobial agents: silver, chlorhexidine acetate, povidone-iodine, and manuka honey. METHOD: The materials were tested against four reference strains of bacteria: Staphylococcus aureus (PCM 2051), Staphylococcus epidermidis (PCM 2118), Pseudomonas aeruginosa (ATCC 27853),...
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Difficulties with evaluating resistance of materials to cavitation.
PublikacjaW pracy dokonano analizy wyników Międzynarodowego Testu Erozji Kawitacyjnej (ICET), któremu koordynował Instytut Maszyn Przepływowych Polskiej Akademii Nauk (IMP PAN) w Gdańsku. Kluczowe parametry wpływające na zmianę przebiegu krzywych erozji uzyskanych na stanowiskach badawczych zostały wskazane. Wykazano konieczność przeprowadzenia badań w zakresie oceny wpływu efektu skali. Zaprezentowano wyniki uzyskane na stanowiskach magnetostrykcyjnych...
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A study of modern materials for arc spraying
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Tools for finishing processes on hard materials
PublikacjaPrzedstawiono narzędzia i wyniki obróbki materiałów w stanie twardym. Analizowano proces docierania elementów ceramicznych mikroziarnami diamentowymi, nagniatanie stali w stanie twardym (60 HRC) kulkami z Si3N4 i przecinanie ściernicowe stali ŁH15 (62 HRC).
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Moleculars Materials in Optoelectronics and Photovoltaic Devices
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Materials for potentiometric electrochemical gas sensors
PublikacjaPublikacja przeglądowa na temat zasady działania oraz rodzajów czujników elektrochemicznych gazów.
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Scale effects in cavitation erosion of materials
PublikacjaW pracy przedstawiono wpływ wielkości objętości erodowanego materiału na przebieg krzywych erozyjnych. Przedstawiono również niektóre wyniki Międzynarodowego Testu Kawitacyjnego.
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Building materials in context for sustainable development
PublikacjaInterpretacja pojęcia ''budownictwo zrównoważone''. Zadania, cele i przykłady interpretacji realizacji budownictwa w kontekście zasad zrównoważonego rozwoju. Wskaźniki zrównoważenia stosowane w budownictwie.
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Toxic components of food packaging materials
PublikacjaW rozdziale scharakteryzowano materiały wykorzystywane do produkcji opakowań do żywności i stosowane składniki dodatkowe, polepszające ich użytkowe właściwości oraz przeanalizowano możliwość migracji niektórych substancji toksycznych z tych opakowań do produktów żywnościowych.
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Future Directions in Quantum Materials Synthesis
PublikacjaThe following sections are included: Introduction The Current State of the Art The Frontiers Exploring the Frontiers Conclusion
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Advances in Hard–to–Cut Materials: Manufacturing, Properties, Process Mechanics and Evaluation of Surface Integrity
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Materials Selection and Design Options Analysis for a Centrifugal Fan Impeller in a Horizontal Conveyor Dryer
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A 95-Year-Old Concrete Arch Bridge: From Materials Characterization to Structural Analysis
PublikacjaThe structural analysis of a 95-year-old concrete arch bridge located in Jagodnik (Poland) is performed in this paper, in order to check its behavior under today’s traffic loads. The mechanical properties of both the concrete and the reinforcement are investigated by testing cores and bar stubs extracted from the bridge. Structural analysis confirms that the bridge meets today’s load requirements in terms of bearing capacity, serviceability...
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Functional 3D-Printed Polymeric Materials with Metallic Reinforcement for Use in Cut-Resistant Gloves
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Novel temperature operated electrooptical materials based on K2ZnCl4: PVA polymer nanocomposites
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Selection of Materials Used in Viscous Clutch With ER Fluid Working in Special Conditions
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Correlations between the wear of car brake friction materials and airborne wear particle emissions
PublikacjaAirborne wear particles emitted from transport vehicle brakes are one of the main sources of toxic metals in inhalable particulate matter. Prediction of wear particle emissions may become more accurate if the relationship between the wear and particle emission characteristics is known. An experimental study was performed to investigate proportional correlations between the mass wear, 0.01–0.42 μm particle emission measured by a NanoScan...
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Surface effects of network materials based on strain gradient homogenized media
PublikacjaThe asymptotic homogenization of periodic network materials modeled as beam networks is pursued in this contribution, accounting for surface effects arising from the presence of a thin coating on the surface of the structural beam elements of the network. Cauchy and second gradient effective continua are considered and enhanced by the consideration of surface effects. The asymptotic homogenization technique is here extended to...
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Challenges and opportunities related to the use of sewage sludge ash in cement-based building materials – A review
PublikacjaDue to the increasingly demanding legal regulations, regarding both sewage sludge (SS) and solid residues obtained during its thermal utilization processes, new solutions to limit their negative impact on the environment are sought. One approach that eliminates the risk of sewage sludge ash (SSA) is its use in cement building materials. The article contains a detailed literature review regarding the use of SSA in mortars and concretes,...