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Search results for: TRIMETHYLAMINE-N-OXIDE
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Core–shell excitation of isoxazole at the C, N, and O K-edges – an experimental NEXAFS and theoretical TD-DFT study
PublicationThe near-edge X-ray absorption fine structure (NEXAFS) spectra of the gas-phase isoxazole molecule have been measured by collecting total ion yields at the C, N, and O K-edges. The spectral structures have been interpreted using time-dependent density functional theory (TD-DFT) with the short-range corrected SRC2-BLYP exchange–correlation functional. Experimental and calculated energies of core excitations are generally in good...
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A hierarchical porous composite magnetic sorbent of reduced graphene oxide embedded in polyvinyl alcohol cryogel for solvent‐assisted‐solid phase extraction of polycyclic aromatic hydrocarbons
PublicationA hierarchical porouscomposite magnetic sorbent was fabricated and applied tothe dispersive solvent-assisted solid-phase extraction of five polycyclic aromatichydrocarbons. A sorbent was first prepared by incorporating graphene oxide,calcium carbonate, and magnetite nanoparticles into a polyvinyl alcohol cryo-gel. The graphene oxide was converted to reduced graphene oxide using ascorbicacid and a hierarchical porous structure was...
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Classification of Covid-19 using Differential Evolution Chaotic Whale Optimization based Convolutional Neural Network
PublicationCOVID-19, also known as the Coronavirus disease-2019, is an transferrable disease that spreads rapidly, affecting countless individuals and leading to fatalities in this worldwide pandemic. The precise and swift detection of COVID-19 plays a crucial role in managing the pandemic's dissemination. Additionally, it is necessary to recognize COVID-19 quickly and accurately by investigating chest x-ray images. This paper proposed a...
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Cascade Object Detection and Remote Sensing Object Detection Method Based on Trainable Activation Function
PublicationObject detection is an important process in surveillance system to locate objects and it is considered as major application in computer vision. The Convolution Neural Network (CNN) based models have been developed by many researchers for object detection to achieve higher performance. However, existing models have some limitations such as overfitting problem and lower efficiency in small object detection. Object detection in remote...
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Optical Detection of Ketoprofen by Its Electropolymerization on an Indium Tin Oxide-Coated Optical Fiber Probe
PublicationIn this work an application of optical fiber sensors for real-time optical monitoring of electrochemical deposition of ketoprofen during its anodic oxidation is discussed. The sensors were fabricated by reactive magnetron sputtering of indium tin oxide (ITO) on a 2.5 cm-long core of polymer-clad silica fibers. ITO tuned in optical properties and thickness allows for achieving a lossy-mode resonance (LMR) phenomenon and it can be...
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Morphology, Mechanical and Thermal Properties of Thermoplastic Polyurethane Containing Reduced Graphene Oxide and Graphene Nanoplatelets
PublicationPolyurethane/graphene nanocomposites were synthesized using commercial thermoplastic polyurethane (TPU, Apilon 52DE55), and two types of graphene derivatives: graphene nanoplatelets (GNP) and reduced graphene oxide (RGO). Fourier Transformation Infrared Spectroscopy Fourier Transformation Infrared Spectroscopy (FTIR) spectroscopy, TEM, and SEM microscopy and XRD techniques were used to chemically and structurally characterize GNP...
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Oznaczanie neurotoksyny, β-N-metylamino-L-alaniny (BMAA), w materiale biologicznym
Publicationβ-N-metylamino-L-alaniny (BMAA) jest naturalnie występującym niebiałkowym aminokwasem. W strukturze związku występuje grupa karboksylowa o pKa1 2,1 , pierwszorzędowa grupa aminowa o pKa2 6,5 i drugorzędowa grupa aminowa o pKa3 9,8. Przy fizjologicznych wartościach pH (7,4), w obecności CO2/HCo3-, BMAA tworzy węglanowe addukty (BMAA-α - NCO2 i BMAA-β-NCO2) o działaniu agonistycznym względem receptorów glumatinianu. Efektem jest...
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Effect of operating conditions on N 2 O production in an anammox sequencing batch reactor containing granular sludge
PublicationNitrous oxide (N2O) is one of the gases with the greatest impact in the atmosphere due to its persistence and significant contribution to the greenhouse effect. This study provides an insight into the dynamics of N2O production in wastewater nitrogen removal systems. A 10 L sequencing batch reactor containing enriched anammox biomass was subjected to different operational conditions, i.e., temperature, feed time, NO2 /NH4 þ ratio...
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Ocena jakości dostępnych na rynku suplementów diety zawierających kwasy tłuszczowe z rodziny n-3
PublicationCoraz większą uwagę zwraca się obecnie na uzupełnianie diety w NNKT, zwłaszcza kwasy EPA i DHA z rodziny n-3, w które bogaty jest olej rybi. Zbadano jakość dostępnych na krajowym rynku suplementów diety produkowanych z oleju rybiego w postaci kapsułek żelatynowych, ze szczególnym uwzględnieniem składu kwasów tłuszczowych i stabilności oksydatywnej.
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Molecular geometry and optical activity of helically chiral N-nitrosamines derived from 1,2,3,4-tetrahydro- and 1,2,3,4,7,8,9,10-octahydro-1,10-phenanthroline
PublicationX-ray crystallographic analysis of the title N-nitrosamines revealed that they assume helical conformations in the solid state. Nitrosamines 1b and 2b were resolved by inclusion crystallization with optically active diols (TADDOLs). The absolute configuration of the guest molecules in the complexes 1b·3b and 2b·3b was assigned as M. The optical activity of the resolved compounds is manifested by their solid state CD spectra, which...
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Testbed analysis of video and VoIP transsmission performance in IEEE 802.11 b/g/n networks
PublicationThe aim of the work is to analyze capabilities and limitations of different implementations of IEEE 802.11 technologies (IEEE 802.11 b/g/n), utilized for both video streaming and VoIP calls directed to mobile devices. Our preliminary research showed that results obtained with currently popular simulation tools can be drastically different than these possible in real-world environment, so, in order to correctly evaluate performance...
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Monitoring of lysozyme thermal denaturation by volumetric measurements and nanoDSF technique in the presence of N-butylurea
PublicationThe results of thermal studies of denaturation of hen egg white lysozyme (HEWL) in water and an aqueous solution of N-butylurea (BU) are presented. High-precision densimetric measurements were used to characterize and analyze the changes of the specific volume, v, during temperature elevation. The temperature of the midpoint of protein denaturation was also determined by nanoDSF technique (differential scanning fluorimetry). The...
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Structure and thermoelectric properties of Te/Ag/Ge/Sb (TAGS) materials obtained by reduction of melted oxide substrates
PublicationThe Ge0.77Ag0.1Sb0.13Te1alloy was fabricated by a novel two step route. For that purpose firstly the oxide reagents were melted at high temperature and quenched into pellets. After that pellets were milled to the powder and then reduced in hydrogen at various temperatures and for various periods of time. Energy dispersive X-ray analysis indicated the possibility of successful fabrication of stoichiometric thermoelectric materials...
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Effective yttrium based coating for steel interconnects of solid oxide cells: Corrosion evaluation in steam-hydrogen atmosphere
PublicationThis work describes manufacture, analysis and test of a new well conducting corrosion-protection coating that can be applied on steel types with high chromium content. Electrolytic deposition of yttrium salts is used to form thin (<100 nm) coatings on both flat steel sheets (material: Crofer 22 APU) and its properties are proven on woven wire-meshes (materials from two different sources: SUS316 and SUS316L). The oxide scale on...
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Electrokinetic properties of n-tetradecane/lecithin solution emulsions
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Mechanism of the reaction of Lawesson's reagent with N-alkylhydroxamic acids
PublicationIdentyfikacja fosforowych produktów powstających w reakcji kwasów hydroksamowych z odczynnikiem Lawessona pozwoliła ustalić mechanizm tytułowej reakcji. Wykorzystano w tym celu spektroskopię 31P NMR. Wzorce labilnych produktów otrzymano na niezależnej drodze syntetycznej lub przeprowadzono je w trwałe pochodne, które wyizolowano z mieszanin reakcyjnych. Produktem przejściowym badanej reakcji okazał się odpowiedni O-ditiofosfonylowany...
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Disturbances of biological N-removal processes in the presence of sulphonamides
PublicationBadano podatność na biodegradację oraz wpływ na efektywność nitryfikacji wybranych sulfonamidów (sulfanilamidu SA, sulfacetamidu SCM oraz p-toluenosulfonamidu p-TSA). Podatnośc na biodegradację badano przy użyciu testu OECD 301D (test zamkniętej butelki). Efektywność nitryfikacji miarzono zgodnie z ISO 9509:1989. Stwierdzono, że wszystkie badane związki wykazują bardzo słabą podatność na biodegradację oraz mają wyraźny wpływ na...
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Hybrid analogues of SFTI-1 modified in P1 position by β- and γ-amino acids and N-substituted β-alanines
PublicationA series of compounds containing either non-proteinogenic beta-/gamma-amino acids or N-substituted beta-alanine residues (beta-peptoid units) in P-1 specificity position were synthesized based on the structure of sunflower trypsin inhibitor 1 (SFTI-1). The compounds were synthesized on a solid support; the N-substituted beta-alanines (beta Nhlys and beta Nhphe) were introduced into a peptidomimetic chain via a two-step approach...
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Electrochemical properties of porous Sr0.86Ti0.65Fe0.35O3 oxygen electrodes in solid oxide cells: Impedance study of symmetrical electrodes
PublicationThis work evaluates porous Sr0.86Ti0.65Fe0.35O3 (STF35) as a possible oxygen electrode material for Solid Oxide Cells. The powder synthesis was performed by solid state method. Characterization included DC electrical conductivity study of sintered bulk samples and impedance spectroscopy study of symmetrical electrodes deposited on gadolinium doped ceria substrates. Measurements were carried out in atmospheres with different pO2...
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22/23 Instrumenty pochodne w zarządzaniu finansami N
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Decyzje przedsiębiorstw na rynku finansowym 23/24 N
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Podstawy Informatyki sem. III, IŚ, INŻ., n-stacj
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Konstrukcje Betonowe I - sem. 6 BO - N 2023
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Podstawy Informatyki (IŚ, sII, n-stacj. 22/23)
e-Learning CoursesNauka podstaw programowania i pracy z danymi związanymi z inżynierią środowiska. Zaawansowana obsługa arkusza kalkulacyjnego, programowanie obliczeń w języku Python, praca z bazami danych SQL.
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Podstawy Informatyki II (sIV, n-stacj., 22/23)
e-Learning CoursesNauka podstaw programowania i pracy z danymi związanymi z inżynierią środowiska. Zaawansowana obsługa arkusza kalkulacyjnego, programowanie obliczeń w języku Python, praca z bazami danych SQL.
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Technologia konstrukcji kompozytowych (PG_00057302) SMOOj N P 2023
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23/24 Instrumenty pochodne w zarządzaniu finansami N
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Decyzje przedsiębiorstw na rynku finansowym 2023/2024 N
e-Learning CoursesCelem przedmiotu jest nabycie przez studentów wiedzy na temat mechanizmów funkcjonowania poszczególnych segmentów rynku finansowego umożliwiających podjęcie decyzji odnośnie lokowania kapitału, pozyskania kapitału i ograniczania ryzyka.
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22/23 Budżet państwa i budżety domowe - N
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Technologia konstrukcji kompozytowych (PG_00057302) SMOOj N W 2023
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Nickel(II) tri-tert-butoxysilanethiolates with N-heterocyclic bases as additional ligands: Synthesis, molecular structure and spectral studies
PublicationW publikacji przedstawiono metodę syntezy trzech kompleksów silanotiolanowych z takimi N-heterocyklicznymi zasadami jak: pirydyna, 2-metylopirydyna i 3,5-dimetylopirydyna. Dla tych kompleksów przeprowadzono badania X-Ray, analizy elementarnej. Przy pomocy rentgenowskiej analizy strukturalnej wykazano różną koordynację atomu centralnego - niklu.
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XRD patterns of vanadium oxide nanostructures on quartz glass substrate obtained by V2O5 recrystallization
Open Research DataThe DataSet contains the XRD patterns of vanadium oxide nanostructures on quartz glass substrates obtained by recrystallization of V2O5 thin films between 800-1200°C under synthetic air. The thin films were obtained by the sol-gel method. The information about sol synthesis is described in the Journal of Nanomaterials.
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Evaluation of structural and electrical properties of multicomponent spinel oxide thin films deposited via spray pyrolysis technique
PublicationThis work reports the preparation of (Mn,Co,Fe,Ni,Cr)3O4 high-entropy spinel oxide in the form of a ~ 500 nm thin film utilising a facile spray pyrolysis technique. The structural and electrical properties of the layers were characterised after exposure to temperatures in the range of 400–900 ◦C. The as-deposited layers were amorphous, and crystallised upon heat treatment at 500 ◦C. Microstructural analyses proved a homogeneous...
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Mono- and bimetallic (Pt/Cu) titanium(IV) oxide photocatalysts. Physicochemical and photocatalytic data of magnetic nanocomposites’ shell
PublicationSurface modification of titania with noble and semi-noble metals resulted in significant enhancement of photocatalytic activity. Presented data, showing the photocatalytic properties of TiO2-M (where M is Pt and/or Cu) photocatalysts were further used as Fe3O4@SiO2/TiO2-M magnetic nanocomposites shells in "Mono- and bimetallic (Pt/Cu) titanium(IV) oxide core-shell photocatalysts with Vis light activity and magnetic separability"...
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New 2-[(4-Amino-6-N-substituted-1,3,5-triazin-2-yl)methylthio]-N-(imidazolidin-2-ylidene)-4-chloro-5-methylbenzenesulfonamide Derivatives, Design, Synthesis and Anticancer Evaluation
PublicationIn the search for new compounds with antitumor activity, new potential anticancer agents were designed as molecular hybrids containing the structures of a triazine ring and a sulfonamide fragment. Applying the synthesis in solution, a base of new sulfonamide derivatives 20–162 was obtained by the reaction of the corresponding esters 11–19 with appropriate biguanide hydrochlorides. The structures of the compounds were confirmed...
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Chemical characterization of wild populations of Brassica oleracea complex species (n=9) for the content of their bioactive compounds
PublicationThe wild species belonging to Brassica oleracea complex species (n=9) are widespread in the Mediterranean basin and represent the relative species of several vegetable crops, such as broccoli, cauliflower, kale, cabbage. They are characterized by the high level of bioactive compounds, such as glucosinolates (GLSs), known for their benefits for human health. Four accessions were evaluated: B. macrocarpa (BM) from Favignana (Trapani),...
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Cellular uptake of biotransformed graphene oxide into lung cells
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Micro solid oxide fuel cells and their fabrication methods
PublicationW pracy przedstawiono obecny stan badań związany z tlenkowymi microogniwami paliwowymi oraz metodami ich wytwarzania.
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Micro solid oxide fuel cells and their fabrication methods
PublicationW pracy przedstawiono obecny stan badań i tendencje w rozwoju tlenkowych ogniw paliwowych.
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A novel technology of solid oxide fuel cell fabrication
PublicationW pracy przedstawiono metodę wytwarzania wartstw i materiałów elektroceramicznych. Metoda jest kombinacją metod nanoszenia szkieletu z proszków ceramicznych i prekursorów polimerowych. Umożliwia ona otrzymanie zarówno gęstych jak i porowatych warstw i materiałów jednorodnych oraz kompozytowych. W pracy przedstawiono przykłady struktur dla tlenkowych ogniw paliwowych.
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Antibacterial properties of TiO2 modified with reduced graphene oxide
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Exhaled nitric oxide in pediatric patients with respiratory disease
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Quantum chemical modeling of electrochromism of tungsten oxide films
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Recent anode advances in Solid Oxide Fuel Cells
PublicationW pracy podsumowano bieżące doniesienia na temat potencjalnych materiałów anodowych dla wysokotemperaturowych tlenkowych ogniw paliwowych z uwzględnieniem wyników otrzymanych przez autora pracy.
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Solid oxide fuel cells for distributed energy generation
PublicationW pracy przedstawiono zasadę działania tlenkowego ogniwa paliwowego. Zaprezentowano wybrane problemy oraz rozwiązania technologiczne.
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Oxide Layers Fabricated by Spray Pyrolysis on Metallic Surfaces
Publicationw pracy przedstawiono wyniki badań nad opracowaniem optymalnych warunków przygotowania warstwy stabilizowanego itrem cyrkonu jako prekursora na stali 316L jako podłoża za pomocą pirolizy aerozolowej.
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Properties of glass-ceramic for solid oxide fuel cells
PublicationW pracy przedstawiono właściwości krystalicznych pyro- i orto- krzemowych szkieł przygotowanych dla tlenkowych ogniw paliwowych. Zbadano rozszerzalnoność, ubytek masy, zmiany widm rentgenograficznych oraz widm impedancyjnych dla szkieł narażonych przez 60 dni na atmosfere ulteniajacą i redukująca w temperaturze 800C.
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Optical investigations of electrochemical processes using a long-period fiber grating functionalized by indium tin oxide
Publicationhe growing needs for fast and reliable sensing devices stimulate development of new technological solutions. In this work a new multi-domain sensing method is demonstrated where optical sensing device has been applied to enhance amount of data received during electrochemical analysis. Thin, optically transparent, high-refractive-index, and electrically conductive indium tin oxide (ITO) film was deposited using magnetron sputtering...
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Study on Combined Optical and Electrochemical Analysis Using Indium-tin-oxide-coated Optical Fiber Sensor
PublicationThe growing needs for fast and reliable sensing devices stimulate development of new technological solutions. In this work a new multi-domain sensing method is demonstrated where optical sensing device has been applied to enhance amount of data received during electrochemical analysis. Thin, optically transparent, high-refractive-index, and electrically conductive indium tin oxide (ITO) film was deposited using magnetron sputtering...
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Antibacterial properties of laser-encapsulated titanium oxide nanotubes decorated with nanosilver and covered with chitosan/Eudragit polymers
PublicationTo provide antibacterial properties, the titanium samples were subjected to electrochemical oxidation in the fluoride-containing diethylene glycol-based electrolyte to create a titanium oxide nanotubular surface. Afterward, the surface was covered by sputtering with silver 5 nm film, and the tops of the nanotubes were capped using laser treatment, resulting in an appearance of silver nanoparticles (AgNPs) of around 30 nm in diameter...