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Fluoroaromatic substituents attached to carbon nanotubes help to increase oxygen concentration on biocathode in biosensors and biofuel cells
PublikacjaBased on the known ability of perfluorodecalin/perfluorohydrocarbons to enhance oxygen solubility we modified oxygen sensitive biocathode by adding perfluorinated components to the catholite. This procedure improved the efficiency of the oxygen sensitive cathodes. Glassy carbon electrodes covered with single-wall carbon nanotubes (SWCNTs) with covalently bonded perfluoroaromatic groups were shown to be more sensitive to oxygen,...
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Post-Chromatographic Derivatization Coupled with Mass Spectrometry as a Method of Profiling and Identification of Antioxidants; Ligustrum vulgare Phytocomplex as an Example
PublikacjaHigh-performance liquid chromatography (HPLC) and high-performance thin-layer chromatography (HPTLC) coupled with radical scavenging assays, such as 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2′-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid (ABTS) can be both used for the detection of the antioxidants in plant extracts. In this study, the ethanolic (70% v/v) extracts from different morphological parts of Ligustrum vulgare collected...
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Stable Field Electron Emission and Plasma Illumination from Boron and Nitrogen Co‐Doped Edge‐Rich Diamond‐Enhanced Carbon Nanowalls
PublikacjaSuperior field electron emission (FEE) characteristics are achieved in edge-rich diamond-enhanced carbon nanowalls (D-ECNWs) grown in a single-step chemical vapor deposition process co-doped with boron and nitrogen. The structure consists of sharp, highly conductive graphene edges supplied by a solid, diamond-rich bottom. The Raman and transmission electron microscopy studies reveal a hybrid nature of sp3-diamond and sp2-graphene...
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RAPORT-EKSPERTYZA Z POMIARÓW DRGAŃ LINII WAŁÓW NA JEDNOSTCE ORP „PIORUN”
PublikacjaEkspertyza diagnostyczna dotycząca stanu technicznego lini transmisji mocy (linii wałów) opracowana na podstawie przeprowadzonych pomiarów drgań. Pomiary prędkości i przyspieszeń drgań generowanych przez węzły konstrukcyjne linii wałów okrętowego układu napędowego wykonano po naprawie głównej napędu okrętu w stoczni „NAUTA”, w celu określenia jego stanu dynamicznego. Rejestrację drgań przeprowadzono w: • płaszczyźnie pionowej (V)...
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Emissivity Measurements on Shape Memory Alloys
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Two-photon double ionization of atoms in attosecond x-ray radiation fields
PublikacjaWe consider two-photon double ionization of helium with 100, 200, and 400 eV excess energy for the two ejected electrons, corresponding to photon energies of 89.5, 139.5, and 239.5 eV, respectively. We focus on the case of ultrashort pulses (two oscillations of the field) and develop an approach to calculate the two-photon transition matrix elements within the lowest order of the time-dependent perturbation theory. One of the...
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Evaluation of Barkhausen Noise and Magnetoacoustic Emission Signals Properties for Plastically Deformed Armco Iron
PublikacjaArtykuł prezentuje wyniki badania wpływu różnych rodzajów deformacji plastycznej na właściwości magnetoakustyczne żelaza Armco. Badane były dwie serie próbek - pierwsza składała się ze wstępnie wyżarzonych próbek, które następnie były walcowane na zimno, w skład drugiej wchodziły natomiast próbki wycięte z komercyjnie dostępnej blachy wykonanej z żelaza Armco a następnie poddane obciążeniom rozciągającym. Walcowanie na zimno prowadzi...
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Silicon oxycarbide-tin nanocomposite derived from a UV crosslinked single source preceramic precursor as high-performance anode materials for Li-ion batteries
PublikacjaIn this work, we report an innovative and facile UV light-assisted synthesis of a nanocomposite based on silicon oxycarbide (SiOC) and tin nanoparticles. SiOC ceramic matrix, containing a conductive free carbon phase, participates in lithium-ion storage, and buffers the volume changes of Li-alloying/de-alloying material. The reported synthesis procedure through a polymer-derived ceramic route involves the preparation of a single-source...
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Fotogrametria cyfrowa (2022/2023)
Kursy OnlinePrzedmiot Fotogrametria cyfrowa prowadzony dla profilu Fotogrametria niskiego pułapu. (Geodezja i kartografia, studia dzienne inżynierskie, sem. V)
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Fotogrametria cyfrowa (2023/2024)
Kursy OnlinePrzedmiot Fotogrametria cyfrowa prowadzony dla profilu Fotogrametria niskiego pułapu. (Geodezja i kartografia, studia dzienne inżynierskie, sem. V)
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Percepcja przestrzeni, wykłady w ramach zajęć z kompozycji
Kursy OnlineKurs składa się z 7 zajęć w formie wykładów on-line w ramach zajęć z przedmiotu Kompozycja na semestrze V.
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Effect of Ru substitution for Ni on the superconductivity inMgCNi3−xRux
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Motion laws synthesis for cam mechanisms with multiple follower displacement
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The synthesis of motion laws for cam mechanisms with additional movement of the follower
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Structural properties and adsorption of uranyl ions on the nanocomposite hydroxyapatite/white clay
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Investigations of the influence of Am-241 photons on the measured alpha particle response of luminescent materials
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Involvement of human glutathione S-transferase M1-1 in the glutathione conjugation of the antitumor unsymmetrical bisacridine derivative C-2028.
Dane BadawczeUnsymmetrical bisacridines (UAs) are a novel potent class of antitumor-active therapeutics. The aim of this study was to investigate the possible role of human glutathione S-transferase M1-1 (hGSTM1-1) in the glutathione (GSH) conjugation of a representative UA, C‑2028.
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Complete input data to CFD 3D model of combustion in the large marine 4-stroke engine
Dane BadawczeInput data to CFD and 3D model of combustion process for large marine 4-stroke diesel engine.
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Efficiency of Biomass Energy used for Heating Purposes in a Residential Building in Comparison with other Energy Sources
PublikacjaThis paper discusses the results of analyses investigating the energy efficiency of biomass in comparison with other popular energy carriers used for heating, ventilation and water heating in residential buildings. The compared energy sources were lignite, natural gas, heating oil and electricity produced by conventional and integrated power generation plants. The most efficient variant relying on biomass and the least efficient...
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Badania tensometryczne płaszcza zbiornika z imperfekcjami kształtu.
PublikacjaW referacie przedstawiono wykorzystanie tensometrycznej metody pomiaru odkształceń do oceny rozkładu naprężeń powierzchniowych w konstrukcji rzeczywistego obiektu. Obiektem poddanym badaniom był stalowy zbiornik magazynowy, o osi pionowej, z dachem pływającym, o pojemności V=12000 m3. Badany zbiornik charakteryzował się znacznymi imperfekcjami geometrycznymi walcowej powłoki tworzącej płaszcza zbiornika. Celem realizacji badań...
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Properties of chitosan/CuNPs coatings electrophoretically deposited on TiO2 nanotubular oxide layer of Ti13Zr13Nb alloy
PublikacjaCoatings based on chitosan/CuNPs (chit/CuNPs) were obtained by a one-step electrophoretic deposition (EPD) on nanotubular oxide layer of Ti13Zr13Nb alloy. The deposition was carried out for 1 min applying voltages of 10 and 20 V with and without the addition of dispersing agent (Polysorbate 20) to the suspension. The coatings obtained for the lower voltage were more uniform than for the higher voltage. By adding a dispersing agent,...
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Influence of the laser remelting parameters on the thickness of surface layers created on the stainless steel X5CrNi18-10
PublikacjaIn this work the surface of austenitic stainless steel type X5CrNi18-10 was treated by using laser. Laser remelting was done by means of laser MLT 2500 CO2 with different parameters of treatment: P - power beam (800 [W], 1000 [W], 1100 [W], 1200 [W]); v - scanning velocity (6 [mm/s], 7 [mm/s], 8 [mm/s]); diameter of laser beam (1.4 [mm], 1.6 [mm]). The influence of these parameters on the thickness and shape of layers in manufacturing...
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Nawigacja lotnicza i meteorologia 2022/2023
Kursy Onlinekursu wspomagający do przedmiotu: Nawigacja lotnicza i meteorologia kierunek: Geodezja i Kartografia specjalność: Fotogrametria Niskiego Pułapu semestr: V
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Nawigacja lotnicza i meteorologia 2023/2024
Kursy Onlinekursu wspomagający do przedmiotu: Nawigacja lotnicza i meteorologia kierunek: Geodezja i Kartografia specjalność: Fotogrametria Niskiego Pułapu semestr: V
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Modelowanie w chemii 2024/25
Kursy OnlineW ramach niniejszego kursu realizowane będą zajęcia z przedmiotu Modelowanie w chemii dla kierunku Chemia (V sem., I st., WCh).
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Projekt z Technologii i Organizacji Robót Budowlanych -grupy 5, 7, 10 dr inż. Anna Jakubczyk-Gałczyńska - 2023
Kursy OnlineKurs przeznaczony dla studentów V semestru studiów inżynierskich na kierunku Budownictwo, którzy przypisani są do prowadzącego projektowanie: dr inż. Anna Jakubczyk-Gałczyńska gr. 5,7,10
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Rapid method for the determination of organochlorine pesticides and PCBs in fish muscle samples by microwave-assisted extraction and analysis of extracts by GC-ECD
PublikacjaA procedure for the multiresidue determination of organochlorine pesticides and polychlorinated biphenyls in fish muscle samples has been developed. The method is based on the microwave-assisted extraction (MAE) of food samples from an acetonitrile-water (95 + 5, v/v) mixture followed by SPE cleanup of the extracts and analysis by GC with an electron capture detector. MAE operational parameters, such as the extraction solvent,...
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Comparative Analysis of Phytochemical Profiles and Selected Biological Activities of Various Morphological Parts of Ligustrum vulgare
PublikacjaLigustrum vulgare (LV), widely cultivated in Europe and often used in hedges, has been histori-cally recognized in folk medicine for its potential health benefits. This study focused on exploring the untargeted identification of secondary metabolites in ethanol extracts (70% v/v) from differ-ent morphological parts (young shoots, leaves, flowers and fruits) of LV at various stages of plant development, using ultra-high-performance...
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Nitrification, denitrification, and dephosphatation capability of activated sludge during co-treatment of intermediate-age landfill leachates with municipal wastewater
PublikacjaThis study focuses on the possible use and efficacy of the co-treatment of landfill leachate (intermediate-age) with municipal wastewater. The nitrification, denitrification, and dephosphatation capability of activated sludge acclimated with a mixture of raw municipal wastewater (RWW) with gradually increasing amounts of raw landfill leachate (RLL) (from 0.5 to 5% v/v) were tested. Biochemical tests were conducted simultaneously...
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Approximation Strategies for Generalized Binary Search in Weighted Trees
PublikacjaWe consider the following generalization of the binary search problem. A search strategy is required to locate an unknown target node t in a given tree T. Upon querying a node v of the tree, the strategy receives as a reply an indication of the connected component of T\{v} containing the target t. The cost of querying each node is given by a known non-negative weight function, and the considered objective is to minimize the total...
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Application of a commercially available derivatization instrument and commonly used reagents to HPLC on-line determination of antioxidants
PublikacjaThis study demonstrates the potential of a commercially available derivatization instrument coupled with HPLC for separation and on-line determination of antioxidants detected with widely used screening reagents - DPPH (2,2-diphenyl-1-picrylhydrazyl), ABTS (2,2'-azino-bis(3-ethylbenzthiazoline-6-sulphonic acid) or FCR (Folin-Ciocalteu's phenol reagent ). As the result of optimization, key parameters of the analytical procedure,...
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Sustainable utilization of copper post-flotation waste in cement composites
PublikacjaThe current way of managing the copper ore flotation waste is by placing it in waste neutralization facilities. However, flotation waste has great potential in application in cement composites. The article presents the detailed characteristics of post-flotation waste (PFW) and three types of cements: CEM I, CEM II/B-V, and CEM III/A, 42.5 MPa class. The post-flotation waste added for 20% of the cement mass increase the water demand...
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Evaluation of the yield, chemical composition and biological properties of essential oil from bioreactor-grown cultures of Salvia apiana microshoots
PublikacjaMicroshoot cultures of the North American endemic Salvia apiana were established for the first time and evaluated for essential oil production. Stationary cultures, grown on Schenk-Hildebrandt (SH) medium, supplemented with 0.22 mg/L thidiazuron (TDZ), 2.0 mg/L 6-benzylaminopurine and 3.0% (w/v) sucrose, accumulated 1.27% (v/m dry weight) essential oil, consisting mostly of 1,8-cineole, β-pinene, α-pinene, β-myrcene and camphor....
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MICROPROPAGATION, ANTIOXIDANT ACTIVITY, TOTAL PHENOLICS AND FLAVONOIDS CONTENT OF GARDENIA JASMINOIDES ELLIS AS AFFECTED BY GROWTH REGULATORS
PublikacjaThis investigation has been carried out to study Micropropagation of Gardenia jasminoides Ellis shootlet,induction and growth of callus and enhancement of antioxidant, total phenolics and flavonoids content in shootlet andcalli. The results revealed that for shooting stage adding 2 or 3 mg/l BAP gave the highest shootlet number/explant. Butadding 3 mg/l 2iP produced the longest shootlet and leaves number. The...
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Electrical Simulations of the SIS100 Superconducting Dipole and Quadrupole Circuits: Transients, Earthing and Failure Modes
PublikacjaThe 100 Tm superconducting synchrotron SIS100 is the main accelerator of the international Facility for Antiproton and Ion Research (FAIR) currently under advanced construction in Darmstadt, Germany. The SIS100 dipole circuit which creates the magnetic field required to bend the beam, consists of 108 dipoles distributed over six arc sections of the ring. The magnetic field for the beam focusing is generated by three individual...
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Radio Channel Measurements in Off-Body Communications in a Ferry Passenger Cabin
PublikacjaThis paper presents an off-body radio channel measurements in a ferry passenger cabin at 2.45 GHz band, for static sleeping scenarios with different body orientation and on-body antennas placements, and also for upper and lower sleeping berths. The measurements have been performed with two types of on-body wearable receiving antennas: FlexPIFA (flexible planar inverted F antenna), and FlexNotch (flexible adhesive-backed notch antenna)...
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Influence of laser processing of the low alloy medium carbon structural steel on the development of the fatigue crack
PublikacjaThe paper contains the results of the structural analysis, hardness tests and fatigue tests conducted for the medium carbon structural steel with low content of Cr and Ni after its processing with CO2 laser beam. Pre-cracks were made in the round compact tension (RCT) specimen used for fatigue test. Next, four paths, parallel to each other, were melted on both sides of the samples using a laser beam. The paths were perpendicular...
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PG_00055848: PROJEKT ARCHITEKTONICZNY V. PROJEKT UNIWERSALNY 2023/24
Kursy OnlineKurs przeznaczony dla studentów sem. 5 inż. realizujących w sem. zimowym 23/24 przedmiot Projekt Architektoniczny V w Katedrze Architektury Miejskiej i Przestrzeni Nadwodnych/SAKN
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Miscanthus × giganteus root anatomical traits measurements
Dane BadawczeThis data set presents the optical microscope measurements/ images of Miscanthus × giganteus (M×g) roots. The experiment was performed under work package 1: "Properties characterisation of two types of biochar", task D_RT: Phyto-analyses (stress response of plants on biochar amendments) in cooperation with Aarhus University. A short term pot experiment...
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Improvement of microstructure and mechanical properties of high dense sic ceramics manufactured by high-speed hot pressing
PublikacjaNon-oxide ceramics possess high physical-mechanical properties, corrosion and radiation resistance, which can be used as a protective materials for radioactive wastes disposal. The aim of the present study was the manufacturing of high density SiC ceramics with advanced physical and mechanical parameters. The high performance on the properties of produced ceramics was determined by the dense and monolithic structure. The densified...
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Ryszard Katulski prof. dr hab. inż.
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Electrical properties of hybrid planar diode based on palladium phthalocyanine and titanium dioxide
PublikacjaThis work details experimental studies of a planar diode made of indium tin oxide/titanium dioxide/palladium phthalocyanine/gold. The rectification ratio of current was 105 at 1.5 V. The analysis of the electrical properties of the system was based on small signal complex capacitance spectra measured in the frequency range of 25 Hz-1 MHz at different values of bias. No depletion region at the TiO2/PdPc interface was observed. Forward...
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Investigation of RTS Noise in Reverse Polarized Silicon Carbide Schottky Diodes
PublikacjaOne of the method of electronic device quality and reliability evaluation is observation of its inherent noise. The RTS phenomena usually indicates the presence of large defects in the structure of the material of the device, therefore it can be treated as an indicator of technology quality. In the paper authors present results of RTS investigations in reverse polarized Silicon Carbide Schottky diodes. Devices being studied are...
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Deterministic Rendezvous in Restricted Graphs
PublikacjaIn this paper we consider the problem of synchronous rendezvous in which two anonymous mobile entities (robots) A and B are expected to meet at the same time and point in a graph G = (V;E). Most of the work devoted to rendezvous in graphs assumes that robots have access to the same sets of nodes and edges, where the topology of connections may be initially known or unknown. In our work we assume the movement of robots is restricted...
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Analiza biomasy jako nośnika energii na tle wybranych konwencjonalnych źródeł energii
PublikacjaArtykuł przedstawia wyniki analiz zastosowania odnawialnych źródeł energii (głównie biomasy) na tle wybranych konwencjonalnych źródeł energii (oleju opałowego, gazu ziemnego oraz węgla kamiennego). Materiał uzasadnia wyniki analizy ekonomicznej oraz analizy ekologicznej ww. nośników energii dla potrzeb ogrzewania oraz wentylacji obiektu referencyjnego zlokalizowanego w różnych strefach klimatycznych na terytorium Polski (strefa...
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Linearized CMOS OTA using Active-Error Feedforward technique.
PublikacjaW pracy przedstawiono koncepcję układową operacyjnego wzmacniacza transkonduktancyjnego CMOS OTA oraz metodę linearyzacji jego charakterystyki przejściowej typu ''active-error feedforward''. Badania symulacyjne przy pomocy programu SPICE wykazały, że linearyzowany układ jest dostosowany do pracy z napięciem zasilania ± 1,25 V i dla sygnału harmonicznego o częstotliwości 1MHz (0,8 Vp-p) zapewnia poziom zniekształceń harmonicznych...
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Perspektywy zastosowania hybrydowych układów napędowych w pojazdach wojskowych.
PublikacjaPrzedstawiono budowę, działanie oraz zalety i wady różnych rodzajów hybrydowych układów napędowych pojazdów. Opisano programy rozwojowe wojskowych pojazdów hybrydowych prowadzone obecnie w Stanach Zjednoczonych: RST- V Shadow, COMBATT, ''hybrydyzację'' układów napędowych samochodu Humvee, transportera M113 i bojowego wozu piechoty M2 Bradley oraz programy perspektywiczne -FCS,CHPS, UGV. Krótko zaprezentowano prace dotyczące...
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9 - Solid oxide fuel and electrolysis cells
PublikacjaIn this chapter, the fundamental reactions, the geometrical designs, the material requirements, and the status of SOFCs and SOECs are presented. In the following seven chapters, the most important components of an SOC are described and the chapter ends with a summary and outlook. The described components are: (i) oxygen-ion conductors (electrolyte), (ii) anode materials for SOFCs (cathode in SOEC mode), (iii) cathode materials...
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Formation of High Corrosion Resistant Nanotubular Layers on TitaniumAlloy Ti13Nb13Zr
PublikacjaThis paper presents results of oxidation tests and corrosion investigations of titanium alloy Ti13Nb13Zr performed at different conditions. The oxide layers have been formed by electrochemical method in 2M H3PO4 + 0.3% HF solution for 30 min. and 1 h at 20 V constantvoltage. The corrosion tests have been made by potentiodynamic method in Ringer`s solution at pH ranged between 3 and 7. It has been shown that the nano-oxide films,...
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Inhibitive effect of sodium molybdate on corrosion of AZ31 magnesium alloy in chloride solutions
PublikacjaIn this work, corrosion inhibition of the AZ31 magnesium alloy was investigated in NaCl solutions containing different amounts of sodium molybdate inhibitor. Electrochemical, hydrogen evolution, microscopic, and spectroscopic experiments were utilized to examine the mechanism of corrosion inhibition by molybdates. The results showed that Na2MoO4 inhibitor provides reliable inhibition at high concentrations (150 mM). Surface examination...