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Search results for: ELECTRODE LOCATION
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Numerical Simulation of Temperature Field in Steel under Action of Electron Beam Heating Source
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Właściwości metrologiczne elektrod woltamperometrycznych w dziedzinie częstotliwości i metoda ich wyznaczania
PublicationW pracy przeanalizowano właściwości metrologiczne elektrod woltamperometrycznych w dziedzinie częstotliwości. Wykazano, że w przypadku małych stężeń oznaczanych jonów, elektrody te mogą być traktowane jak przetworniki pomiarowe I rzędu. Ich właściwości metrologiczne charakteryzowane są przez czułość i częstotliwość graniczną. Przeanalizowano zastosowanie metody chronoamperometrycznej do wyznaczania wartości częstotliwości granicznej...
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Calculations of electron impact ionization cross section for simple biomolecules: formic and acetic acids
PublicationObliczono przekroje czynne na jednokrotną jonizację kwasu mrówkowego oraz kwasu octowego. Obliczenia przeprowadzono używając formalizmu BEB w zakresie energii od progu na jonizację do 400 eV. Wyniki porównano z dostępnymi danymi doświadczalnymi.
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Beam-based scenario for Am242m isomer depletion via nuclear excitation by electron capture
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Spectral profiling of radicals in polymer degradation based on electron spin resonance imaging (ESRI)
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Excess Electron Attachment to Disulfide-Bridged l,l-Cystine. An ab Initio Study
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THE PERFORMANCE OF SELECTED AB INITIO METHODS IN ESTIMATING ELECTRON BINDING ENERGIES OF SUPERHALOGEN ANIONS
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The saturation of the excess electron binding energy in AlnF3n+1- (n= 1–5) anions
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O mozliwości zastosowania w membranowym sensorze smaku elektrod z elektroaktywnym polimerem
PublicationSkonstruowano i testowano nowe elektrody membranowe z polimerem elektroaktwnym w celu wykorzystania w sensorze smaku. Elektrody z węglem szklistym składały się z dwóch warst: 1) poli(3,4-etylenodioksytiofen) z przecijonem (poli (2-strenosulfonian)) lub z anionem ClO4; 2) polichlorek winylu z odpowiednim związkiemlipofilowym. Stwierdzono, że rodzaj przecijonu w polimerze elektroaktywnym nie wpływa na czułość elektrody na jony obecne...
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Performance of a single layer fuel cell based on a mixed proton-electron conducting composite
PublicationMany of the challenges in solid oxide fuel cell technology stem from chemical and mechanical incompatibilities between the anode, cathode and electrolyte materials. Numerous attempts have been made to identify compatible materials. Here, these challenges are circumvented by the introduction of a working single layer fuel cell, fabricated from a composite of proton conducting BaCe0.6Zr0.2Y0.2O3-δ and a mixture of semiconducting...
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Enhancement of defects induced optical nonlinearity in Al: ZnO thin films by electron beam
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Relativistic theory of photoionization of one electron systems: an eigen channel R-matrix approach.
PublicationPrzedstawiono zastosowanie metody kanałów własnych R-macierzy do opisu procesu fotojonizacji relatywistycznych układów jednoelektronowych.
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The finite-volume Dirac-Hartree-Fock method for confined relativistic many-electron systems.
PublicationRozpatrzono relatywistyczny układ N-elektronowy ograniczony w skończonej objętośći V. Ograniczenie modelowano za pomocą warunku brzegowego narzuconego na funkcję falową układu na brzegu hiperobjętości VN. Stosując przybliżenie elektronów niezależnych, z zasady wariacyjnej dla energii wyprowadzono układ równań Diraca-Hartree-Focka oraz warunki narzucone na rozwiązania tego układu na brzegu V.
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Measurements of differential cross sections for elastic electron scattering in the backward direction by molecular oxygen.
PublicationZmierzono różniczkowe przekroje czynne na rozproszenie sprężyste elektronów na cząsteczkach tlenu w zakresie kątów rozproszenia 100-180 st., dla wybranych energii padających elektronów w przedziale 7-20eV. Do pomiarów wykorzystano metodę lokalnego pola magnetycznego.
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Joint experimental and theoretical study on electron scattering from titanium tetrachloride (TiCl4) molecule
PublicationAbsolute grand-total cross section for electron scattering from titanium tetrachloride, TiCl4, molecule was measured at electron-impact energies ranging from 0.3 to 300 eV, in the linear electron-transmission experiment. The elastic integral, differential, momentum transfer, and total ionization cross sections for TiCl4 molecule were also calculated for low and intermediate collisional energies at the level of various theories. The...
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TIME-OF-FLIGHT DIFFERENTIAL ELECTRON SCATTERING FROM MOLECULAR TARGETS: BENCHMARK CROSS SECTIONS
PublicationWe report time-of-flight differential cross section (DCS) measurements for the electron impact excitation transition in H2. In this work, agreement between available theory and experiment is excellent overall, and marks a transition in electron molecule scattering where differential scattering of excitation is found to be in such precise agreement. We also prove that the newly built apparatus can be used for accurate measurement...
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Correlation–polarization effects in electron/positron scattering from acetylene: A comparison of computational models
PublicationDifferent computational methods are employed to evaluate elastic (rotationally summed) integral and differential cross sections for low energy (below about 10 eV) positron scattering off gas-phase C2H2 molecules. The computations are carried out at the static and static-plus-polarization levels for describing the interaction forces and the correlation–polarization contributions are found to be an essential component for the correct...
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Low-energy electron scattering from molecular hydrogen: Excitation of the X1Σg+ to b3Σu+ transition
PublicationWe present time-of-flight differential cross-section measurements and convergent close-coupling calculations of differential cross sections for the electron-impact excitation of the X 1 g + → b 3 u + transition in molecular hydrogen. A part of this work was recently published [M. Zawadzki et al., Phys. Rev. A 97, 050702(R) (2018)]. In this work, agreement between theory and experiment is excellent overall, and marks a transition...
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Cross sections calculations for electron scattering from dimethylamine, NH(CH3)2, molecule
PublicationThe total cross section for single electron-impact ionization and the integral elastic cross section for electron scattering from dimethylamine have been calculated using the binary-encounter-Bethe model and the independent atom method, respectively.
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Electron-impact ionization cross section calculations for 5-chloropyridine and 5-bromopyridine molecules
PublicationThe total cross sections for the single electron-impact ionization of 5-chloropyridine (5-C5H4ClN) and 5-bromopyridine (5-C5H4BrN) molecules have been calculated using binary-encounter-Bethe method for electron energies ranging from the ionization threshold up to 5 keV.
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Total cross section measurements for electron scattering from tin(IV) chloride (SnCl4)
PublicationTotal cross section for electron scattering from SnCl4 molecules has been measured for energies from 0.6 to 300 eV. Obtained results have been compared with total cross sections for electron scattering from other tetrachloride molecules: XCl4 where X=C, Si, Ge.
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Electron scattering from 2-methyl–1,3-butadiene,C5H8, molecules: Role of methylation
PublicationWe report cross-section results from experimental and theoretical investigations into electron collisions with the 2-methyl–1,3-butadiene [C5H8] molecule. The current results are compared with our previous results for the 1,3-butadiene [C4H6] molecule, a structural homologue of 2-methyl–1,3-butadiene, to investigate how the methylation (the substitution of hydrogen atom by a methyl group) affects the shape and/or magnitude of the...
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Static electric and magnetic multipole susceptibilities for Dirac one-electron atoms in the ground state
PublicationWe present tabulated data for several families of static electric and magnetic multipole susceptibilities for hydrogenic atoms with nuclear charge numbers from the range $1\leq Z\leq137$. Atomic nuclei are assumed to be point-like and spinless. The susceptibilities considered include the multipole electric polarizabilities $\alpha_{\mathrm{E}L\to\mathrm{E}L}$ and magnetizabilities (magnetic susceptibilities) $\chi_{\mathrm{M}L\to\mathrm{M}L}$...
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Wpływ warunków spawania na zawartość wodoru dyfundującego przy spawaniu mokrym elektrodą otuloną
PublicationPrzeprowadzono badania wpływu wybranych warunków spawania MMA pod wodą metodą mokrą na zawartość wodoru dyfundującego w stopiwie. Dzięki zastosowaniu planowania badań ustalono, że największy wpływ na generowanie wodoru ma: zasolenie wody, natężenie prądu spawania, biegunowość prądu spawania oraz zanieczyszczenie elektrody.
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Wpływ warunków spawania mokrego elektrodą otuloną na zawartość wodoru dyfundującego w stopiwie
PublicationMokre spawanie pod wodą znajduje stosunkowo szerokie zastosowanie w praktyce. Poza zwiększoną prędkością stygnięcia złączy najpoważniejszym ograniczeniem spawalności stali w środowisku wodnym jest wysoka zawartość wodoru dyfundującego w stopiwie. W artykule przedstawiono wyniki badań rozpoznawczych wpływu warunków spawania mokrego elektrodą otuloną na ilość wodoru dyfundującego. Dzięki zastosowaniu planowania doświadczeń (plan...
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Właściwości dynamiczne elektrody woltamperometrycznej w dziedzinie częstotliwości i koncepcja metody ich wyznaczenia
PublicationW artykule przeanalizowano zasadę pracy elektrody woltamperometrycznej. Z przeprowadznej analizy wynika, że elektroda woltamperometryczna w przypadku oznaczeń małych stężeń jest przetwornikiem I rzędu. Jej właściwości metrologiczne określa czułość, stała czasowa i częstotliwość graniczna. W artykule zaproponowano metodę pomiaru parametrów dynamicznych na podstawie pomiaru prądu granicznego reakcji elektrochemicznj przebiegajacej...
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JMATRIX - a package for relativistic J-matrix calculations in elastic scattering of electrons from model potentials
PublicationWe present a software package JMATRIX, consisting of two computer codes written in FORTRAN 95 and parallelized with OpenMP, implementing the so-called J-matrix method, applied to elastic scattering of electrons on the radial potential, vanishing faster than Coulomb one. In the J-matrix method, physical scattering problem is replaced by using well-defined model, which is solved analytically. Presented software implements both non-relativistic...
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Oznaczanie tlenu – od metody Winklera do czujników enzymatycznych (Determination of oxygen – from Winkler Method to enzymatic sensor)
PublicationMonitoring of dioxygen levels is of utmost importance from the view-point of life processes, medical diagnostics, nutrition and chemical industries. In all these measurements both low and high levels of this element are important. The common methods for the determination of dioxygen are the Winkler method, Clark electrode and pulsoxymeters. A new, already strong field of research can be now recognized – the development of miniaturized...
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Research of hydrotronic variable displacement radial piston pump with electro -pneumatic control
PublicationThe paper presents the developed new electro-pneumatic control (pneumotronic) system for hydraulic fixed-displacement radial piston pump. Hydraulic fixed-displacement radial piston pump equipped with the proposed control system changes into hydrotronic variable-displacement radial piston pump. Pump flow rate control is realized by means of programmable logic controller, electro-pneumatic valves, pneumatic cylinders and a sensor.
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Electro-optical system for the automated selection of dental implants according to their colour matching
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Wear forms of heterogeneous electro-rheological fluids working in a hydraulic clutch system
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Simultaneous opto-electrochemical monitoring of carbamazepine and its electro-oxidation by-products in wastewater
PublicationThe growing human impact on aquatic environments, due to the extensive use of pharmaceuticals and the release of persistent pollutants, makes it necessary to implement new widespread methods for the characterisation and quantification of such contaminants and relative degradation products. Carbamazepine, 5H-dibenzo[b,f]azepine-5-carboxamide, (CBZ) is a widely used anti-epileptic drug, characterised by its limited removal by conventional...
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One-step recovery of REE oxalates in electro-leaching of spent NdFeB magnets
PublicationRecovery of rare-earth elements (REEs) from spent NdFeB magnets is receiving great attention because of high amount of neodymium and potential risk of environmental pollution. In this study, a novel environment-friendly hydrometallurgical route is proposed for efficient recovery of REEs during electrochemical leaching with sulfuric and oxalic acids. With proper adjustment of the electrolyte composition and operating conditions,...
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The synthesis, x-ray structure and metal cation complexation properties of colored crown with two heterocyclic residues as a part of macrocycle
PublicationZsyntezowano nowy eter koronowy zawierający ugrupowanie azowe, resztę pirolu i pirydyny w pierścieniu makrocyklicznym. Badano zdolność kompleksowania kationów metali w acetonitrylu oraz mieszaninę acetonitryl-woda. Do pomiarów wykorzystano spektrofotometrię UV-Vis. Ustalono strukturę krystalograficzną otrzymanego związku.
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Optimizing the Copper Content in GdBa0.5Sr0.5Co2-XCuxO5+δ Double Perovskites as the High Performance Oxygen Electrodes for Reversible Solid Oxide Cells
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Optimizing the Copper Content in GdBa0.5Sr0.5Co2-XCuxO5+δ Double Perovskites as the High Performance Oxygen Electrodes for Reversible Solid Oxide Cells
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Electrochemical performance of Co3O4/CeO2 electrodes in H2S/H2O atmospheres in a proton-conducting ceramic symmetrical cell with BaZr0.7Ce0.2Y0.1O3 solid electrolyte
PublicationThe electrochemical performance of Co3O4/CeO2 mixed oxide materials as electrodes, when exposed to H2S/H2O atmospheres, was examined employing a proton conducting symmetrical cell, with BaZr0.7Ce0.2Y0.1O3 (BZCY72) as the solid electrolyte. The impact of temperature (700–850 °C) and H2S concentration (0–1 v/v%) in steam-rich atmospheres (90 v/v% H2O) on the overall cell performance was thoroughly assessed by means of electrochemical...
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Efficient removal of 2,4,6-trinitrotoluene (TNT) from industrial/military wastewater using anodic oxidation on boron-doped diamond electrodes
PublicationWith growing public concern about water quality particular focus should be placed on organic micropollutants, which are harmful to the environment and people. Hence, the objective of this research is to enhance the security and resilience of water resources by developing an efficient system for reclaiming industrial/military wastewater and protecting recipients from the toxic and cancerogenic explosive compound – 2,4,6-trinitrotoluene...
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Application of Potentiometric Taste Sensor with All Solid State Electrodes for Distinguishing of Red Dry Wines from Polish and French Vineyards
PublicationOpracowano nowy potencjometryczny czujnik smaku z sześcioma różnymi elektrodami typu All Solid State Electrode (ASSE). Każda z elektrod zawiera dwie warstwy: polimer przewodzący i membranę lipidowo-polimerową, w której rozpuszczone są poszczególne związki lipidowe. Potencjometryczny sensor smaku charakteryzuje się globalną selektywnością. Zastosowano go w celu odróżnienia próbek wytrawnych czerwonych win pochodzących z różnych...
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Electrochemical determination of nitroaromatic explosives at boron-doped diamond/graphene nanowall electrodes: 2,4,6-trinitrotoluene and 2,4,6-trinitroanisole in liquid effluents
PublicationThe study is devoted to the electrochemical detection of trace explosives on boron-doped diamond/graphene nanowall electrodes (B:DGNW). The electrodes were fabricated in a one-step growth process using chemical vapour deposition without any additional modifications. The electrochemical investigations were focused on the determination of the important nitroaromatic explosive compounds, 2,4,6-trinitrotoluene (TNT) and 2,4,6-trinitroanisole...
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Potentiometric sensor containing set of ion selective electrodes with lipid modified membranes for quality assessment of tested non-alcoholic beverages
PublicationPotentiometric sensors may be a good tool for fast quality control of commercial drinks. In this work, such a sensor, containing a set of ion-selective electrodes with lipid-modified membranes (benzylhexadecyldimethylammonium chloride monohydrate, hexadecylamine, 1-dodecanol, elaidic acid, cholesterol) was used for discrimination and quality control of non-alcoholic beverages, mainly composed of sugar and citric acid. It was found...
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Highly selective impedimetric determination of Haemophilus influenzae protein D using maze-like boron-doped carbon nanowall electrodes
PublicationThis study reports a novel impedimetric immunosensor for protein D detection in purified and bacterial (Haemophilus influenzae, Hi) samples. The detection was based on antigen recognition by anti-protein D antibodies (apD) immobilised at the maze-like boron-doped carbon nanowall electrodes (B:CNW). The B:CNW electrodes were synthesised, and their surface was characterised by scanning electron microscopy (SEM) and X-ray photoelectron...
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Electrochemical detection of 4,4',5,5'-tetranitro-1H,1'H-2,2'-biimidazole on boron-doped diamond/graphene nanowall electrodes
PublicationWe present a promising approach to the electroanalytical detection of a specific nitroaromatic explosive in landfill leachates (LLs) that originated from a municipal solid waste plant. The paper is focused but not limited to the sensing of 4,4',5,5'-tetranitro-1H,1'H-2,2'-biimidazole (TNBI) using differential pulse voltammetry and cyclic voltammetry. Highly electroactive nanocarbon was applied to determine low concentrations of...
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Influence of sintering temperature of porous SrTi0.30Fe0.70O3-d oxygen electrode on electrochemical impedance spectroscopy spectra measured at 800 °C
Open Research DataThis dataset contains results electrochemica impedance spectroscopy (EIS) of symmetrical cells with porous SrTi0.30Fe0.70O3-d oxygen electrodes sintered at different temperatures (800 °C; 900 °C and 1000 °C). Measure temperature was 800 °C (syntetic air, 40 ml min-1). Results converted to electrode surfaces area and dived by two electrodes.
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Influence of sintering temperature of porous SrTi0.50Fe0.50O3-d oxygen electrode on electrochemical impedance spectroscopy spectra measured at 800 °C
Open Research DataThis dataset contains results electrochemica impedance spectroscopy (EIS) of symmetrical cells with porous SrTi0.50Fe0.50O3-d oxygen electrodes sintered at different temperatures (800 °C; 900 °C and 1000 °C). Measure temperature was 800 °C (syntetic air, 40 ml min-1). Results converted to electrode surfaces area and dived by two electrodes.
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Influence of sintering temperature of porous SrTi0.65Fe0.35O3-d oxygen electrode on electrochemical impedance spectroscopy spectra measured at 800 °C
Open Research DataThis dataset contains results electrochemica impedance spectroscopy (EIS) of symmetrical cells with porous SrTi0.65Fe0.35O3-d oxygen electrodes sintered at different temperatures (800 °C; 900 °C and 1000 °C). Measure temperature was 800 °C (syntetic air, 40 ml min-1). Results converted to electrode surfaces area and dived by two electrodes.
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SEM and Raman studies B:CNWs and BDD electrode used for electrochemical paraquat determination
Open Research DataThe dataset contains the scanning electron micrographs (SEM) and Raman spectra of B:CNWs and BDD samples deposited by MW-PECVD. SEM was used to characterise the morphology of BDD and B:CNW. In contrast, RAMAN was used to reveal the main differences in the crystalline structure of BDD and B:CNWs.
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Examination of the interactions occurring in the gas and liquid phases of atmospheric pressure glow discharge generated in contact with a liquid electrode leading to production of size-defined gold nanostructures
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Magnesium-Doped Sr2(Fe,Mo)O6−δ Double Perovskites with Excellent Redox Stability as Stable Electrode Materials for Symmetrical Solid Oxide Fuel Cells
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Multiprocessor implementation of Parallel Multiobjective Genetic Algorithm for Optimized Allocation of Chlorination Stations in Drinking Water Distribution System - a new water quality model approach
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