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Search results for: K%C5%81ADKA%20DLA%20PIESZYCH
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Two Stage SVM and kNN Text Documents Classifier
PublicationThe paper presents an approach to the large scale text documents classification problem in parallel environments. A two stage classifier is proposed, based on a combination of k-nearest neighbors and support vector machines classification methods. The details of the classifier and the parallelisation of classification, learning and prediction phases are described. The classifier makes use of our method named one-vs-near. It is...
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Determination of authenticity of brand perfume using electronic nose prototypes
PublicationThe paper presents practical application of an electronic nose technique for fast and efficient discrimination between authentic and fake perfume samples. Two self-built electronic nose prototypes equipped with a set of semiconductor sensors were employed for that purpose. Additionally 10 volunteers took part in sensory analysis. The following perfumes and their fake counterparts were analysed: Dior – Fahrenheit, Eisenberg – J’ose,...
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Deep neural networks approach to skin lesions classification — A comparative analysis
PublicationThe paper presents the results of research on the use of Deep Neural Networks (DNN) for automatic classification of the skin lesions. The authors have focused on the most effective kind of DNNs for image processing, namely Convolutional Neural Networks (CNN). In particular, three kinds of CNN were analyzed: VGG19, Residual Networks (ResNet) and the hybrid of VGG19 CNN with the Support Vector Machine (SVM). The research was carried...
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Basic evaluation of limb exercises based on electromyography and classification methods
PublicationSymptoms caused by cerebral palsy or stroke deprive a person partially or even completely of his ability to move. Nowadays we can observe more technologically advanced rehabilitation devices which incorporate biofeedback into the process of rehabilitation of such people. However, there is still a lack of devices that would analyse, assess, and control (independently or with limited support) specialised movement exercises. Here...
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Potential Skyrmion Host Fe(IO3)3: Connecting Stereoactive Lone-Pair Electron Effects to the Dzyaloshinskii-Moriya Interaction
PublicationMagnetic skyrmions, which are topologically distinct magnetic spin textures, are gaining increased attention for their unique physical properties and potential applications in spintronic devices. Here we present a design strategy for skyrmion host candidates based on combinations of magnetic spin, asymmetric building units having stereoactive lone-pair electrons, and polar lattice symmetry. To demonstrate the viability of the proposed...
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Understanding the kinetics and atmospheric degradation mechanism of chlorotrifluoroethylene (CF2=CFCl) initiated by OH radicals
PublicationThe atmospheric degradation of chlorotrifluoroethylene (CTFE) by OH˙ was investigated using density functional theory (DFT). The potential energy surfaces were also defined in terms of single-point energies derived from the linked cluster CCSD(T) theory. With an energy barrier of −2.62 to −0.99 kcal mol−1 using the M06-2x method, the negative temperature dependence was determined. The OH˙ attack on Cα and Cβ atoms (labeled pathways...
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Role of Human UDP-Glucuronosyltransferases in the Biotransformation of the Triazoloacridinone and Imidazoacridinone Antitumor Agents C-1305 and C-1311 : Highly Selective Substrates for UGT1A10
Publication5-Diethylaminoethylamino-8-hydroxyimidazoacridinone, C-1311 (NSC-645809), is an antitumor agent shown to be effective against breast cancer in phase II clinical trials. A similar compound, 5-dimethylaminopropylamino-8-hydroxytriazoloacridinone, C-1305, shows high activity against experimental tumors and is expected to have even more beneficial pharmacological properties than C-1311. Previously published studies showed that these...
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Pi of the sky: search for optical flashes of extragalactic origin
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<title>"Pi of the sky": robotic search for cosmic flashes</title>
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Typology of low developed non-metropolitan sub-regions in the European Union
PublicationThis paper shows a typology of 319 NUTS-3 sub-regions in the European Union. The selected sub-regions are non-metropolitan sub-regions, whose gross domestic product per capita in 2011 was below 75% of the EU average. The objective of this typology was to recognize diversity in the examined sub-regions as a starting point for the selection of areas for future comparative research. The typology takes into account 24 variables related...
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Supply system based on the 18-pulse diode rectifier with coupled reactors and integrated with the series active power filter
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Evaluation of the anti-tyrosinase activity of extracts and rare flavonoids from Scleranthus perennis L.
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Determination of anti-tyrosinase activity of acetone extracts from selected Potentilla L. species.
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Supervisory Control of Integrated Wastewater Treatment Systems
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Influence of geometric imperfections on capacities of silo structures loaded with pressure below atmospheric
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Influence of energy absorbers on Malgaigne fracture mechanism in lumbar-pelvic system under vertical impact load
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Sandwich-like mesoporous silica flakes for anticancer drug transport—Synthesis, characterization and kinetics release study
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Synthesis and characterization of luminescent aluminium selenide nanocrystals
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Comparison of commercial thermoluminescent readers regarding high-dose high-temperature measurements
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Attraction of Moths of Two Noctuidae Species to Field Traps Baited With a Mixture of two to three Homologous Acetates in Poland
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Computational studies of intermolecular interactions in aqueous solutions of poly(vinylmethylether)
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Comments on unified analysis of switched-capacitor resonant converters
PublicationW pracy przedyskutowano możliwości regulacji napięcia wyjściowego w powielaczu typu c-przełączane, wpływ na sprawność energetyczną, użycie dodatkowych induktorów.
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Screening of antimicrobial activity of aqueous extracts of selected Potentilla L. species
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The Effects of Hydroxyapatite Addition on the Properties of the Mechanically Alloyed and Sintered Mg-RE-Zr Alloy
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Method development and validation for optimized separation of the major polyphenolics in propolis extracts using GC-MS method
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Enhanced capacitance of composite TiO2 nanotube/boron-doped diamond electrodes studied by impedance spectroscopy
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Effect of substituting Fe and Ru for Ni on the thermopower ofMgCNi3
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Quasiharmonic approach to a second-order phase transition
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High-pressure and thermal properties of γ-Mg2SiO4 from first-principles calculations
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First-principles calculations of the lattice dynamics of CuInSe2
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Lattice dynamics of HgSe: Neutron scattering measurements andab initiostudies
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Individual contributions of M X-ray line from Cu- and Co-like tungsten ions and L X-ray line from Ne-like molybdenum ions – Benchmarks for new approach to determine the high-temperature tokamak plasma parameters
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Ab initio elasticity of chalcopyrites
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Ab initioheat capacity and atomic temperature factors of chalcopyrites
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Letter to the editor on the article “Alteration of redox status by commonly used antimalarial drugs in the north-western region of Nigeria” by Muhammad A et al.
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Preparation of Activated Carbon from the Biodegradable film for Co2 Capture Applications
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Seasonal variability and morphological structure of bacteria in the Admiralty Bay (King George Island, Antarctic).
PublicationIntroduction: The aim of investigations was to state whether melting glaciers cause mass mortality of the sea stenohalyne organisms, what in consequence can lead to an increase of accumulation and growth of psychrophilic bacteria. It may be also that fresh melting water is unfavourable to the sea bacteria and front glacier's regions are not the areas of their intensive development. Methods: Field investigations were done in Admiralty...
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Evaluation of sorption capabilities of biopolymeric microspheres by the solid-phase extraction
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Temperature and pressure dependence of the luminescence of Eu2+-doped fluoride crystals BaxSr1−xF2(x= 0, 0.3, 0.5 and 1): experiment and model
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The influence of laser alloying on the structure and mechanical properties of AlMg5Si2Mn surface layers
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New Eu2 +sites in KMgF3:Eu2 +crystal
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Luminescence of LiBaF3 and KMgF3 doped with Eu2+
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Low temperature luminescence of KMgF3:Eu2+ crystal
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Influence of high hydrostatic pressure on Eu2+-luminescence in KMgF3:Eu2+ crystal
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Crystal field model of the three principal Cr3+centers in LiTaO3
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Antibiotic loaded microspheres as antimicrobial delivery systems for medical applications
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Dissociative electron attachment to the radiosensitizing chemotherapeutic agent hydroxyurea
PublicationDissociative electron attachment to hydroxyurea was studied in the gas phase for electron energies ranging from zero to 9 eV in order to probe its radiosensitizing capabilities. The experiments were carried out using a hemispherical electron monochromator coupled with a quadrupole mass spectrometer. Diversified fragmentation of hydroxyurea was observed upon low energy electron attachment and here we highlight the major dissociation...
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Copolyester-coated mineral fertilizers – preparation, characterization, and nutrient release
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Scleranthus perennis extracts prolonged the honeybee lifespan
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Characterization of restriction endonucleaseAjoI fromAcinetobacter johnsonii
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