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Search results for: SEABED CHARACTERIZATION
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Characterization of Small Azocrown Ether Stereoisomers.
PublicationWyizolowano i zbadano metodą X-ray, 1H NMR i UV-Vis trwałe izomery E i Z 10-członowej azokorony. Ich struktura w stanie stałym świadczy o naprężonej konformacji w przypadku izomeru trans i nie naprężonej dla izomeru cis. Jest to efektem sprzężenia p grupy azowej z benzenem i naprężenia sterycznego konformacji cząsteczki.
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Structural characterization of plasmenylcholine photooxidation products.
PublicationZbadano fotoutlenianie PPlsC w obecności rozpuszczalnego w wodzie sensybilizatora (uczulacza) jakim jest tetrasulfonian ftalocyjaniny zawierający aluminium(III). Stosując metody chromatograficzne (HPLC) wyizolowano, zidentyfikowano oraz scharakteryzowano zasadnicze produkty powstające w obecności tlenu podczas ciągłego naświetlania światłem widzialnym o długości fali 610nm.
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Preparation and characterization of bis‐phosphonated polycarbohydrates
PublicationA simple, cost-effective, one-pot method was proposed to introduce bis-phosphonic groups onto alginic acid and carboxymethyl cellulose (CMC). New derivatives were characterized by means of nuclear magnetic resonance, X-ray photoelectron, and attenuated total reflectance Fourier transform infrared spectroscopy. These analyses confirmed the successful transformation of carboxylic groups present in alginic acid and CMC into bis-phosphonic...
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Evaluating aerial laser scanning for seafloor mapping automation Shallow seabed mapping based on airborne Lidar bathymetry
PublicationThis article presents a novel methodological approach to understand and assess the suitability of ALB for the automatic classification and mapping of the seabed. ALB allows recording of the depth below the Secchi disk.
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Synthesis and characterisation of starch cuprate
PublicationThe cupration of granular potato starch with ammonium tetrachlorocuprate(II) was performed by a 20 min lasting microwave-assisted process and by 40 min convectional heating. In both cases the degree of esterification (DE) did not exceed 0.0064. A higher dose of cuprate had a positive effect on DE, regardless of whether the microwave irradiation or the convectional heating was applied, and on the thermal stability of the starch...
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Taking advantage of the shared explicit cache system based critical sections in the shared memory parallel architectures
PublicationArtykuł prezentuje nową metodę implementacji sekcji krytycznych w równoległych architekturach z pamięcią współdzieloną, takich jak systemy zintegrowane wielowątkowe wieloprocesorowe. Metoda stanowi modyfikację i rozbudowanie metody zwanej Folding, dostępnej w procesorach sieciowych oraz jest w założeniach podobna do techniki zwanej cache-based locking. W porównaniu do dostępnych metod, nowa metoda usuwa problemy skalowalności i...
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Substrate characterization in a electrochemically derived Manganium-Cobaltium thin films
Open Research DataManganium-Cobaltium thin films were electrochemically deposited on a Ni foams subsrates in a one-step process at −1.1 V vs. Ag/AgCl in an aqueous solution of differently concentrated Mn(NO3)2·4H2O and Co(NO3)2·6H2O with the deposition time limited by charges of 60, 120, and 200 mC at 25 °C. The concentration ratios of Mn(NO3)2·4H2O to Co(NO3)2·6H2O...
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Composite GFRP U-shaped footbridge
PublicationThe paper presents proposals for the use of glass fiber reinforced polymer composites for the construction of engineering objects, known and commonly used in the shipbuilding industry. An example of a pedestrian footbridge was used in this case, which, despite the considerable thickness of the structural material, was made using infusion technology in one production cycle. The designed and produced footbridge span is durable, dynamically...
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Modelling of Geared Multi-Rotor System
PublicationIn the paper the method of modelling a speed-varying geared rotor system is presented. The proposed approach enables us to obtain an accurate low-order lumped parameter representation of the investigated system. The final model consists of reduced modal models of an undamped beam/torsional shaft system as well as a spatially lumped model of other linear and nonlinear phenomena including gear mesh interaction.
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Hybrid model of geared rotor system
PublicationIn the paper a hybrid model of a geared multirotor system has been developed. The model is obtained by application of both the modal decomposition methodology and the spatial discretization method. Reduced modal model was constructed for the system without gyroscopic and damping effects. The gyroscopic interaction, damping and other phenomena which are difficult to include in the modal approach were modeled by application of simply...
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Shared processor scheduling of multiprocessor jobs
PublicationWe study a problem of shared processor scheduling of multiprocessor weighted jobs. Each job can be executed on its private processor and simultaneously on possibly many processors shared by all jobs. This simultaneous execution reduces their completion times due to the processing time overlap. Each of the m shared processors may charge a different fee but otherwise the processors are identical. The goal is to maximize the total...
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Seaweed utilization issues in biogas production
PublicationMacroalgae can be seen as a renewable feedstock for the production of biofuels in many coastal areas around the World and especially in Baltic Sea region where the eutrophication is particularly troublesome. The investigation of anaerobic digestion technologies for extracting inexhaustible bioenergy from seaweed was conducted in many research institutions mainly in laboratory scale. Although seaweeds seem to have a great potential...
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The impact of potential leakage from the sub-seabed CO2 storage site on the phosphorus transformation in marine sediments – An experimental study
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Full scale measurements of pressure field induced on the quay wall by bow thrusters – indirect method for seabed velocities monitoring
PublicationThe paper presents the results of full-scale experimental investigation of loads generated on the quay wall by bow thrusters during unberthing of a self-manoeuvring vessel. The presented research allowed for the comparison of the measurements results with generally accepted empirical prediction methods and confirmed the utility of the developed measuring setup for the on-line monitoring of jet induced loads. The conclusions from the...
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Electrical and optical characterization of ITO thin films
PublicationW pracy przestawiono wyniki badań tlenku cyny domieszkowanego indem (ITO) pod kątem zastosowania jako przezroczyste elektrody. opisano metody pomiarów wybranych właściwości elektrycznych i optycznych. cienką warstwę ito, naniesioną na szklane podłoże, wykonano metodą rozpylania magnetronowego.
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Characterization of carbon deposit with controlled carburization degree
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Synthesis and characterization of colloidal gallium selenide nanowires
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Synthesis, characterization and photocatalytic properties of lithium tantalate
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Synthesis and characterization of luminescent aluminium selenide nanocrystals
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Synthesis and in silico characterization of artificially phosphorylated glycosaminoglycans
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Methods of quality characterization of foil-based capacitors
PublicationJakość kondensatorów wykonanych z folii aluminiowej jest zależna od wielu parametrów podczas ich produkcji. Istniejące metody oceny ich jakości nie są doskonałe. Stąd istnieje potrzeba propozycji nowych metod. W pracy przedstawiono wyniki badań zawartości trzeciej harmonicznej oraz emisji akustycznej występującej pod wpływem naprężenia mechanicznego zwijek foliowych z jakością wytworzenia tych zwijek.
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Optical Coherence Tomography for nanoparticles quantitative characterization
PublicationThe unique features of nanocomposite materials depend on the type and size of nanoparticles, as well as their placement in the composite matrices. Therefore the nanocomposites manufacturing process requires inline control over certain parameters of nanoparticles such as dispersion and concentration. Keeping track of nanoparticles parameters inside a matrix is currently a difficult task due to lack of a fast, reliable and cost effective...
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Isolation and Characterization of Phenol-Degrading Psychrotolerant Yeasts
PublicationIn this study, the potential of selected psychrotolerant yeast strains for phenol biodegradation was studied. From 39 strains isolated from soil and water samples from Rucianka peat bog, three psychrotolerant yeast strains: A011, B021 and L012 showed the ability to phenol degradation. The result shows that all three yeast strains could degrade phenol at 500 mg l-1 and 750 mg l-1 concentration, whereas strains A011 and L012 could...
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Preparation and characterization of rigid polyurethane-polyglycerolnanocomposite foams
PublicationThis work reports on the preparation of polyurethane-polyisocyanurate (PUR-PIR) foams containing different polyglycerols and layered silicate nanoclays. The rigid polyurethane foams were obtained in a laboratory scale, in a single step method, from a two-component system with a NCO to OH groups ratio equal to two. The reaction mixture consisted of the proper amounts of a commercial oligoetherpolyol, polyglycerol, catalysts, water,...
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Preparation and characterization of biopolymeric films with magnetic properties
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Isolation and characterization of the restriction endonucleasePpel fromPhormidium persicinum
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Photochemical and spectral characterization of peripherally modified porphyrazines
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Production and characterization of MWBNNT and B-doped SWCNT
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Growth and characterization of PrBa2Cu3O7-δ single crystals
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Growth and characterization of PrBa2Cu3O7-δ single crystals
PublicationWe report on the growth of PrBa2Cu3O7-δ single crystals in the Al2O3 and ZrO2 crucibles by flux method. The high influence of the reaction between crucible and liquid on the initial melt composition has been established. We found that the precipitation of the chemically stable compound BaZrO3 and BaAl2O4 occurs by direct chemical reaction between BaCuO2 and ZrO2 or Al2O3 crucibles materials. Free separated crystals with maximum...
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Characterization of structure of porous materials by ultrasonic reflectometry
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Genetic characterization of horses in Early Medieval Poland
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Characterization of two aminotransferases from Candida albicans
PublicationAminoadipate aminotransferase (AmAA) is an enzyme of α-aminoadipate pathway (AAP) for l-lysine biosynthesis. AmAA may also participated in biosynthesis or degradation of aromatic amino acids and in d-tryptophan based pigment production. The AAP is unique for fungal microorganisms. Enzymes involved in this pathway have specific structures and properties. These features can be used as potential molecular markers. Enzymes catalyzing...
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In-depth characterization of icosahedral ordering in liquid copper
PublicationThe presence of icosahedral ordering in liquid copper at temperatures close to the melting point is now well-established both experimentally and through computer simulation. However, a more elaborate analysis of local icosahedral and icosahedron-like structures, together with a system for classifying such structures based on some measure of "icosahedrity", has so far been conspicuously absent in the literature. Similarly, the dynamics...
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Characterization of rectangular waveguide with a pseudochiral omega slab
PublicationMetodę dopasowania rodzajów zastosowano do rozwiązania falowodu prostokątnego zawierającego materiał pseudochiralny typy Omega. Zdefiniowano własności rodzajów pola w badanej prowadnicy oraz zauważono wystąpienie efektu przemieszczenia pola. Określono pełnofalową macierz rozproszenia sekcji badanego falowodu oraz porównano wyniki symulacji charakterystyk transmisyjnych sekcji z eksperymentem. W oparciu o uzyskane wyniki dokonano...
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Characterization of porous materials by capillary rise method
PublicationBadane były kinetyki penetracji ciał porowatych złożonych z cząstek o różnych wymiarach. Na podstawie przeprowadzonych badań okazało się, że kinetyki penetracji i ważność prawa Washburna zależą nie tylko od wielkości cząstek ale także od dystrybucji wielkości porów. Różnica w czasie jaka wynika z przepływu cieczy przez ośrodek porowaty do całkowitego nasycenia cieczą została zaproponowana jako nowy parametr, opisujący rozkład wielkości...
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Comparative characterisation of durian, mango and avocado
PublicationCelem przeprowadzonych badan była ocena właściwości odżywczych i bioaktywnych stosunkowo mało znanych egzotycznych owoców duriana i ich porównanie z parametrami charakteryzującymi powszechnie znane owoce mango i gruszki adwokackiej. W badaniach wykorzystano takie techniki jak HPLC, trójwymiarowa fluorescencja (3D-FL), testy oparte na zastosowaniu rodników (ABTS i DPPH) oraz zaawansowane techniki chemometryczne. na podstawie uzyskanych...
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Studies on the Preparation and Characterisation of Carbon Nanostructures
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Etazene (N,N-diethyl-2-{[(4-ethoxyphenyl)methyl]-1H-benzimidazol-1-yl}-ethan-1-amine (dihydrochloride)): a novel benzimidazole opioid NPS identified in seized material: crystal structure and spectroscopic characterization
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Natural convection in symmetrically heated vertical channels
PublicationThe study describes natural convection through a vertical channel, open on four sides and bound by two isothermal walls. Both balancing and infrared experimental investigations were performed in air (Pr = 0.71) to estimate the impact of channel width s and wall-to-ambient temperature difference (tw - t∞) on natural convective heat transfer, the formation of air flow patterns and the rate of flow pattern formation. The study was...
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Multi-headed chimera states in coupled pendula
PublicationWe discuss the occurrence of the chimera states in the network of coupled, excited by the clock’s mechanisms pendula. We find the patterns of multi-headed chimera states in which pendula clustered in different heads behave differently (oscillate with different frequencies) and create different types of synchronous states (complete or phase synchronization). The mathematical model of the network shows that the observed chimera states...
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Cable-stayed bridges. Basic static schemes
PublicationThe paper presents an overview of shaping of cable-stayed bridges. Historical background, basic static sketches and overview of selected bridges are included. Selected natural solutions and interesting unrealized projects were presented. Basic ideas and most important principals are discussed. The examples and sketches were given an author's comment. Static diagrams of two pylon structures with three variants of the arrangement...
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INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION
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Characterization of novel trehalose synthase from Deinococcus geothermalis.
PublicationThe method of trehalose extraction from yeast or othernatural sources is unsuitable for industrial production becauseof its low yield and high cost. Thus, the trehalose synthesizingenzyme systems that originated from a few microorganisms have been investigated.
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Wide range of properties of polyurethanes for medicine - characterization of biomaterials
PublicationW artykule opisano różnorodność poliuretanów stosowanych na polu biomedycznym. Wyrózniono mtody otrzymywania materiałów o róznych własciwościach, a tym samym zastosowaniach. Opisano 10 serii potrzymanych PU oraz wyniki charakterystyki fizycznej, powierzchniowej i biologicznej tych poliuretanów.
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Cyclosporine CsA—The Physicochemical Characterization of Liposomal and Colloidal Systems
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Preparation, characterization and photocatalytic activity of metal-loaded NaNbO3
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Synthesis and characterization of iron-filled multi-walled nanotubes
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Oxidation and reduction of multiwalled carbon nanotubes — preparation and characterization
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Tumor Interstitial Fluid Formation, Characterization, and Clinical Implications
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