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Search results for: high entrophy oxides
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The effect of high pressure at subzero temperature on proteins solubility, drip loss and texture of fish (cod and salmon) and mammal’s (pork and beef) meat
PublicationOne of the possibilities of using high pressure technique in inactivation of microorganism is conducting this process at subzero temperature. However, for its practical application in meat preservation the appropriate properties of meat should be kept. Therefore, the aim of this work was to examine the effect of pressure at subzero temperature (without freezing of water) on proteins and texture of mammal’s and cold-adapted fish...
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Group-9 Transition-Metal Suboxides Adopting the Filled-Ti2Ni Structure: A Class of Superconductors Exhibiting Exceptionally High Upper Critical Fields
PublicationTi2Ni and the related η-carbide structure are known to exhibit various intriguing physical properties. The Ti2Ni structure with the cubic space group Fd3̅m is surprisingly complex, consisting of a unit cell with 96 metal atoms. The related η-carbide compounds correspond to a filled version of the Ti2Ni structure. Here, we report on the structure and superconductivity in the η-carbide-type suboxides Ti4M2O with M = Co, Rh, and Ir....
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Synthetic, Structural, and Spectroscopic Characterization of a Novel Family of High-Spin Iron(II) [(β-Diketiminate)(phosphanylphosphido)] Complexes
PublicationThis work describes a series of iron(II) phosphanylphosphido complexes. These compounds were obtained by reacting lithiated diphosphanes R2PP(SiMe3)Li (R = t-Bu, i-Pr) with an iron(II) β-diketiminate complex, [LFe(μ2-Cl)2Li(DME)2] (1), where DME = 1,2-dimethoxyethane and L = Dippnacnac (β-diketiminate). While the reaction of 1 with t-Bu2PP(SiMe3)Li yields [LFe(η1-Me3SiPPt- Bu2)] (2), that of 1 with equimolar amounts of i-Pr2PP(SiMe3)Li,...
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Research on water lubricated main shaft bearings in conditions of improper lubrication and cooling conducted on high torque real-life scale bush test rig
PublicationWater lubricated polymer bushes find increasingly popular use in the sliding bearings of marine propellers, water turbines and pump shafts. Such popularity is partly due to their simple construction which also means relatively affordable price. In addition, properly designed and installed water lubricated bearings may well last for over a decade. However, in practical experience one may also observe cases of rapid wear...
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High gain/bandwidth off‑chip antenna loaded with metamaterial unit‑cell impedance matching circuit for sub‑terahertz near‑field electronic systems
PublicationAn innovative off-chip antenna (OCA) is presented that exhibits high gain and efficiency performance at the terahertz (THz) band and has a wide operational bandwidth. The proposed OCA is implemented on stacked silicon layers and consists of an open circuit meandering line. It is shown that by loading the antenna with an array of subwavelength circular dielectric slots and terminating it with a metamaterial unit cell, its impedance...
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The effect of Fe on chemical stability and oxygen evolution performance of high surface area SrTix-1FexO3-δ mixed ionic-electronic conductors in alkaline media
PublicationDevelopment of environmentally friendly, high performing oxygen evolution reaction (OER) catalysts is an important research challenge. In this work, iron doped strontium titanates with a general formula SrTi1-xFexO3-δ (x = 0.35, 0.50, 0.70, 0.90, and 1.00) denoted as STFx, were synthesized via a solid state reaction technique and characterized in terms of oxygen evolution reaction electrocatalysis in an alkaline electrolyte (0.1...
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Physicochemical properties of Mn1.45Co1.45Cu0.1O4 spinel coating deposited on the Crofer 22 H ferritic steel and exposed to high-temperature oxidation under thermal cycling conditions
PublicationThe Crofer 22 H ferritic steel substrate was coated with an Mn1.45Co1.45Cu0.1O4 spinel by means of electrophoresis. After high-temperature oxidation under thermal cycling conditions, the physicochemical properties of the obtained system were evaluated. During 48-h cycles that involved heating the samples up to temperatures of either 750 or 800 °C, the oxidation kinetics of both coated and unmodified steel approximately obeyed...
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Acid–Base Equilibrium and Self-Association in Relation to High Antitumor Activity of Selected Unsymmetrical Bisacridines Established by Extensive Chemometric Analysis
PublicationUnsymmetrical bisacridines (UAs) represent a novel class of anticancer agents previously synthesized by our group. Our recent studies have demonstrated their high antitumor potential against multiple cancer cell lines and human tumor xenografts in nude mice. At the cellular level, these compounds affected 3D cancer spheroid growth and their cellular uptake was selectively modulated by quantum dots. UAs were shown to undergo metabolic...
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Identification of novel halogenated naturally occurring compounds in marine biota by high-resolution mass spectrometry and combined screening approaches
PublicationMarine animals, plants or bacteria are a source of bioactive naturally-occurring halogenated compounds (NHCs) such as bromophenols (BPs), bromoanisoles (BAs) and hydroxylated or methoxylated analogues of polybrominated diphenyl ethers (HO-PBDEs, MeO-PBDEs) and bromobiphenyls (HO-BBs, MeO-BBs). This study applied a comprehensive screening approach using liquid chromatography high-resolution mass spectrometry and combining target,...
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Recent Advances in Accelerated Multi-Objective Design of High-Frequency Structures using Knowledge-Based Constrained Modeling Approach
PublicationDesign automation, including reliable optimization of engineering systems, is of paramount importance for both academia and industry. This includes the design of high-frequency structures (antennas, microwave circuits, integrated photonic components), where the appropriate adjustment of geometry and material parameters is crucial to meet stringent performance requirements dictated by practical applications. Realistic design has...
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High temperature air/steam gasification of biomass in view of hydrogen rich gas production.
PublicationArtykuł przedstawia opis nowej i zaawansowanej metody konwersji termochemicznej biomasy i miejskich odpadów stałych w paliwo gazowe, bogate w wodór. W porównaniu z tradycyjnym procesem gazyfikacji, w metodzie tej wykorzystuje się powietrze/parę wodną przegrzane do wysokiej temperatury (powyżej 1300 st. C). Przegrzanie powietrza lub pary wodnej odbywa się z zastosowaniem ceramicznego przegrzewacza wysokotemperaturowego. W celu...
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Hydrogen rich gas production from high temperature air/steam gasification of biomass
PublicationW pracy przedstawiono nowoczesną technikę konwersji biomasy oraz stałych odpadów komunalnych w celu produkcji paliwa gazowego bogatego w wodór. Opisany proces gazyfikacji przebiega w wysokiej temperaturze przy obniżonej koncentracji tlenu i udziale pary wodnej. Dzięki temu możliwa jest produkcja gazów palnych, w szczególności H2, który można wykorzystać do produkcji energii elektrycznej i cieplnej.
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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...
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High power, zero ripples active filtering system with power modules operating in parallel
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The Effects of High Doses of Caffeine on Maximal Strength and Muscular Endurance in Athletes Habituated to Caffeine
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Enhancing the Effectiveness of the Diamond Metal Bond Instrument when Grinding High-Strength Materials
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Xanthone synthetic derivatives with high anticandidal activity and positive mycostatic selectivity index values
PublicationWith the current massive increases in drug-resistant microbial infection as well as the significant role of fungal infections in the death toll of COVID-19, discovering new antifungals is extremely important. Natural and synthetic xanthones are promising derivatives, although only few reports have demonstrated their antifungal mechanism of action in detail. Newly synthetized by us xanthone derivative 44 exhibited strong antifungal...
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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...
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High resolution optical time-domain reflectometry using sub-picosecond laser sources
PublicationPrzedstawiono działanie sensorów światłowodowych wykorzystujących reflektometrię optyczną w dziedzinie czasu. Omówiono ograniczenia możliwości pomiarowych tej klasy sensorów wynikające z zastosowania w nich reflektometrów światłowodowych zaprojektowanych do zastosowań w telekomunikacji. Zaprezentowano sensory wykorzystujące specjalizowane reflektometry o dużej rozdzielczości. Przedstawiono koncepcję sensora wykorzystującego dwa...
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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...
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Effect of lysozyme or nisin on survival of some bacteria treated with high pressure at subzero temperature
PublicationCelem pracy było określenie wrażliwości gramujemnych i gramdodatnich bakterii na działanie ciśnienia 193MPa w temp. -20°C w obecności lizozymu lub nizyny. Stwierdzono, że połączone działanie ciśnienia i badanych substancji przeciwdrobnoustrojowych na zawiesiny bakterii Escherichia coli i Staphylococcus aureus powodowało większy stopień inaktywacji komórek niż suma efektów wywieranych przez pojedyncze czynniki.
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FPGA realization of the high-speed residue-to-binary converter based on the Chinese Remainder Theorem
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Economic growth and role of medium and low tech industries versus high tech industries
PublicationRozdział w monografii stanowiący kompleksową analizę wpływu oraz roli sektora niskich oraz średnich technologii we wzroście gospodarczym. Rola tych 2 sektorów jest przeciwstawiona roli sektora wysokich technologii we wzroście gospodarczym. Autorzy przeprowadzają analizę dla krajów OECD.
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pH Gradient as a Tool for the Separation of Ionizable Analytes in Reversed-Phase High-Performance Chromatography
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Mechanical response of buried High-Density Polyethylene pipelines under normal fault motions
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<title>Hardware emulator of the high-resolution CCD sensor for the Pi of the Sky experiment</title>
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Polyfunctional chemically bonded stationary phase for reversed phase high-performance liquid chromatography
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High pressure and time-resolved luminescence spectra of Ca3Y2(SiO4)3doped with Eu2+and Eu3+
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Characterization of various Eu2+ sites in Ca2SiO4:Eu2+ and Ba2SiO4:Eu2+ by high-pressure spectroscopy
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Evolution of the optical properties of chromium doped calcium tetraborate glass under high pressure
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Structural phase transitions and photoluminescence properties of oxonitridosilicate phosphors under high hydrostatic pressure
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Comparative study of surface topography of high performance liquid chromatography columns in terms of hydrophobicity
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High-pressure spectroscopy characterisation of LiSc(WO4)2 crystals doped with trivalent chromium
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High-Entropy Perovskites as Multifunctional Metal Oxide Semiconductors: Synthesis and Characterization of (Gd0.2Nd0.2La0.2Sm0.2Y0.2)CoO3
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GLEMOK – novel method for catchment moisture determination using high-resolution soil map
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A Proposed Molecular Mechanism of High-Dose Vitamin D3 Supplementation in Prevention and Treatment of Preeclampsia
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Determination of Complex Permeability of Silicon Steel for Use in High-Frequency Modeling of Power Transformers
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High resolution model for assessment of contamination by chemical warfare agents dumped in the Baltic Sea
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Peculiarities of Dewatering Technology for Heavy High-Viscosity Crude Oils of Eastern Region of Ukraine
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Effect of mid-frequency discharge assistance on dual-high power impulse magnetron sputtering
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Experimental evaluation of high frequency side scan sonar as object search and identification tool
PublicationPraca prezentuje wyniki badań laboratoryjnych sonaru bocznego jako narzędzia dla pojazdu podwodnego, służącego do poszukiwań i identyfikacji obiektów leżących na dnie, w bliskich odległościach.
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Hierarchical porous carbon sheets derived on a MgO template for high-performance supercapacitor applications
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Three dimensional graphene/carbonized metal-organic frameworks based high-performance supercapacitor
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Biomass-derived robust three-dimensional porous carbon for high volumetric performance supercapacitors
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On the interpretation of high-resolution x-ray spectra from JET with an ITER-like wall
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Microwave-assisted preparation of Li3V2(PO4)3/C composite with high-rate capacity
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Acute Effects of Caffeinated Chewing Gum on Volleyball Performance in High-Performance Female Players
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Could graphene construct an effective conducting network in a high-power lithium ion battery?
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Changes in the Cell Wall Proteome of Leaves in Response to High Temperature Stress in Brachypodium distachyon
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Feature-Based Characterisation of Turned Surface Topography with Suppression of High-Frequency Measurement Errors
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