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Search results for: kauczuk naturalny
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Language material for English audiovisual speech recognition system developmen . Materiał językowy do wykorzystania w systemie audiowizualnego rozpoznawania mowy angielskiej
PublicationThe bi-modal speech recognition system requires a 2-sample language input for training and for testing algorithms which precisely depicts natural English speech. For the purposes of the audio-visual recordings, a training data base of 264 sentences (1730 words without repetitions; 5685 sounds) has been created. The language sample reflects vowel and consonant frequencies in natural speech. The recording material reflects both the...
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Towards facts extraction from text in Polish language
PublicationNatural Language Processing (NLP) finds many usages in different fields of endeavor. Many tools exists allowing analysis of English language. For Polish language the situation is different as the language itself is more complicated. In this paper we show differences between NLP of Polish and English language. Existing solutions are presented and TEAMS software for facts extraction is described. The paper shows also evaluation of...
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On Dynamic Boundary Conditions Within the Linear Steigmann-Ogden Model of Surface Elasticity and Strain Gradient Elasticity
PublicationWithin the strain gradient elasticity we discuss the dynamic boundary conditions taking into account surface stresses described by the Steigmann–Ogden model. The variational approach is applied with the use of the least action functional. The functional is represented as a sum of surface and volume integrals. The surface strain and kinetic energy densities are introduced. The Toupin–Mindlin formulation of the strain gradient elasticity...
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Photogrammetric and computerized report on site model in feasibility study of navigability channel on vistula spit
PublicationIn the report the authors present a course of geodesic and geo-computerized works upon realization of feasibility study of navigability channel on Vistula Spit. A procedure of acquiring verification and modeling of data for requirements of a numeric model of a bottom and site has been presented with construction of original software for 3D visualization of the Vistula Spit area. The activities described in the report can be...
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Price Diversification
PublicationThe price diversification is a complex phenomenon. We show that price discrimination can have both positive and negative effects. The final result depends whether it makes competition more intense. As far as legal procedure is cocerned it is recommended to focus on the effects of compan's actions rather than on the form that these actions may take. There is a need to understand and distinguish between price discrimination as the...
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Perforating systems in shale gas recovery
PublicationHydraulic fracturing is common method of shale gas recovery. Due to environmental, economical and technological problems many alternative technologies have been developed. One of the most promising group of technologies is based on perforating systems. This paper describes theoretical and practical aspects of best known technologies used to create perforations. New perforating/fracturing technologies which can replace hydraulic fracturing...
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Wstępne badania eksperymentalne stalowych łączników balkonowych w aspekcie nośności złącza balkon - strop
PublicationW artykule przedstawiono analizę oraz wyniki wstępnych badań eksperymentalnych prefabrykowanych zestawów balkonowych w naturalnej skali o wymiarach (szerokość × długość × wysokość): 2,0 m × 2,78 m × 0,186 m (w spadku do 0,17 m) składających się z żelbetowych płyt połączonych ze sobą za pomocą stalowych łączników balkonowych w dwóch różnych typach rozwiązania. Ponadto artykuł zawiera przegląd literatury oraz przykładowych rozwiązań...
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Quantitatively and qualitatively characteristic of organic matter in sewage after treatment in constructed wetlands
PublicationNajczęstszym kryterium oceny skuteczności oczyszczania ścieków jest efektywność usuwania zanieczyszczeń. Jednakże oczyszczone ścieki zawierają pewne ilości substancji organicznej niepodatnej na rozkład biologiczny tzw. refrakcyjnej.Organiczne substancje refrakcyjne to przede wszystkim kwasy humusowe, które swoja obecnością w wodzie mogą pogarszać jej właściwości i utrudniać procesy uzdatniania do celów konsumpcyjnych. Wykazano,że...
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Wow detection and compensation employing spectral processing of audio.
PublicationPraca zawiera opis opracowanych algorytmów detekcji i kompensacji pasożytniczych modulacji częstotliwości wynikających z nierównomiernego przesuwu nośnika dźwięku. Proponowane metody opracowano ze szczególnym uwzględnieniem przypadkowych zniekształceń drżenia obecnych w archiwalnych filmowych ścieżkach dźwiękowych. Dodatkowo algorytmy badają wpływ zniekształceń na strukturę formantową sygnałów. Analiza zmian położenia formantów...
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No-local-broadcasting theorem for multipartite quantum correlations
PublicationWe prove that the correlations present in a multipartite quantum state have an operational quantum character even if the state is unentangled, as long as it does not simply encode a multipartite classical probability distribution. Said quantumness is revealed by the new task of local broadcasting, i.e., of locally sharing preestablished correlations, which is feasible if and only if correlations are stricly classical. Our operational...
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Effect of glycolysate obtained from polyurethane wastes on mechanical properties of rubber materials
PublicationThe paper presents the possibility of utilization of wastes from polyurethane foams. In this work the results of mechanical investigations of materials obtained from natural rubber mixtures with a mixture of glycolysate and biodiesel glycerine as a plasticizer are described. The measurements of mechanical properties showed rather good tensile strength, elongation at break and modules of extensions M100%, M200%, M300% of obtained...
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On relations between gradient and classical equivariant homotopy groups of spheres
PublicationWe investigate relations between stable equivariant homotopy groups of spheres in classical and gradient categories. To this end, the auxiliary category of orthogonal equivariant maps, a natural enlargement of the category of gradient maps, is used. Our result allows for describing stable equivariant homotopy groups of spheres in the category of orthogonal maps in terms of classical stable equivariant groups of spheres with shifted...
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Application of industrial waste as a carbon source for biosurfactants production
PublicationBiosurfactants are natural surfactants produced by variety of microorganisms. They are very prospective product due to good biodegradability, low toxicity, good physicochemical properties and high efficiency in many applications. Moreover, they are efficient in wide range of pH, temperatures and salinity. However, the production of biosurfactants is very expensive due to high purification cost. This cost can be minimized by application...
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3D GIS technology. More accurate GIS-every-day-reality
PublicationGeographical space can be described with the Geographic Information System (GIS). It consists of software, hardware, data, algorithms, procedures for processing information and accessibility, as well as the people who use the system and the legal, technological and organisational procedures. GIS is commonly applied in such studies as “Environmental Protection Programmes”, and in numerous reports and documents regarding spatial...
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Wycena środowiska w aspekcie odpowiedzialności moralnej
Publicationthe article '' the pricing of environment in the moral responsibility context" presents ethical protection of natural environment within sustainable development paradigm as well as the problem of individual, moral responsibility in the liberal civilization. it contains different opinions on the environmental ethics, compares flat and deep ecology as well as environmental and ecological economy; it characterizes methods of economic...
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Load test of new European record holder in span length among extradosed type bridges
PublicationThe article presents acceptance load tests of a newly built extradosed MS-3 bridge located along the national road DK-16 near Ostróda (Poland). The structure features significant dimension in European reference scale. It is a new record holder in span length regarding this distinct bridge category. Its length ranges 206 m. Static and dynamic load tests were performed here. The program was extended by entire structural laser scanning...
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On the Disaster Resiliency within the Context of 5G Networks : The RECODIS Experience
PublicationNetwork communications and the Internet pervade our daily activities so deeply that we strongly depend on the availability and quality of the services they provide. For this reason, natural and technological disasters, by affecting network and service availability, have a potentially huge impact on our daily lives. Ensuring adequate levels of resiliency is hence a key issue that future network paradigms, such as 5G, need to address. This...
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Trudności ochrony środowiska w planowaniu przestrzennym–struktura problemu
PublicationArtykuł zawiera ogólną systematykę negatywnych oddziaływań na środowisko przyrodnicze. Autor omawia trudności zapobiegania przez planowanie przestrzenne zagrożeniom środowiska. Analizuje strukturę problemu, wskazując czynniki: społeczne, gospodarcze, prawne i polityczne, w tym rolę: motywacji, hierarchii wartości, świadomości ekologicznej, przekonań. Autor wskazuje też działania prowadzące do ograniczenia zagrożeń.
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Conversion of waste biomass into activated carbon and evaluation of environmental consequences using life cycle assessment
PublicationIn this article, activated carbon was produced from Lantana camara and olive trees by H3PO4 chemical activation. The prepared activated carbons were analyzed by characterizations such as scanning electron microscopy, energy-dispersive X-ray spectroscopy, Brunauer–Emmett–Teller, X-ray diffraction, thermogravimetric analysis, and Fourier transform infrared spectroscopy. H3PO4 is used as an activator agent to create an abundant pore...
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Fluid structure interaction study of non-Newtonian Casson fluid in a bifurcated channel having stenosis with elastic walls
PublicationFluid–structure interaction (FSI) gained a huge attention of scientists and researchers due to its applications in biomedical and mechanical engineering. One of the most important applications of FSI is to study the elastic wall behavior of stenotic arteries. Blood is the suspension of various cells characterized by shear thinning, yield stress, and viscoelastic qualities that can be assessed by using non-Newtonian models. In this...
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Whole genome sequencing of Fowl aviadenovirus A - a causative agent of gizzard erosion and ulceration, in adult laying hens
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Powikłania autologicznego przeszczepienia krwiotwórczych komórek macierzystych u pacjentki z układową amyloidozą AL
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Pharmacological Profile and Molecular Modeling of Cyclic Opioid Analogues Incorporating Various Phenylalanine Derivatives
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Micellar liquid chromatography for lipophilicity determination of new biologically active 1,3‐purinodiones
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The study of salting-out thin-layer chromatography and their application on QSRR/QSAR of some macrolide antibiotics
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Study of the chromatographic behavior of selected steroid hormones on aluminum oxide plates based on quantitative structure-retention relationships
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Molecular modelling of a psychrophilic β-galactosidase
PublicationAntarktyczny szczep, gram-ujemnych bakterii, wyizolowanych z przewodu pokarmowego kryla z gatunku Thyssanoessa macrura, sklasyfikowany na podstawie analizy sekwencji nukleotydowej geny 16S rDNA jako Pseudoalteromonas sp. 22b jest producentem wewnątrzkomórkowej zimnolubnej beta-galaktozydazy. Ponieważ enzym ten wykazuje wysoką aktywność katalityczną w zakresie temperatur od 0 do 30 stC, stanowi on atrakcyjny biokatalizator, użyteczny...
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Formation of polyphosphorus ligands mediated by zirconium and hafnium complexes
PublicationThe reactions of R2P–P(SiMe3)Li (R = tBu, iPr, iPr2N) with [Cp2MCl2] (M = Zr, Hf), [Cp∗CpZrCl2] and [CpZrCl3] yielded polyphosphorus (mainly hexaphosphorus) compounds which can be viewed as intermediates between R2P–P(SiMe3)Li and derivatives of 1,2,3,4-tetraphosphabicyclo[1.1.0] butane. Thus R2P–P(SiMe3)Li can act as a building block for the formation of the P2 ligand and the R2P–P(P2) and R2P–P(P2)P–PR2 moieties. Solid state...
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Material Parameters Identification of Historic Lighthouse Based on Operational Modal Analysis
PublicationIn the present paper, the identification of the material parameters of a masonry lighthouse is discussed. A fully non-invasive method was selected, in which the material properties were determined via numerical model validation applied to the first pair of natural frequencies and their related mode shapes, determined experimentally. The exact structural model was built by means of the finite element method. To obtain experimental...
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Modeling of wood frame structures with different insulation materials under damaging dynamic loading
PublicationWood frame buildings are very popular in regions that are exposed to different dynamic excitations, such as damaging earthquakes. Their seismic resistance is really important in order to prevent structural damages and human losses. This paper presents the results of advanced numerical investigation carried out using the FEM. Based on the models of wall panels, the numerical model of real structure of the wood frame building has...
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Numerical investigation on behaviour of cylindrical steel tanks during mining tremors and moderate earthquakes
PublicationCylindrical steel tanks are important components of industrial facilities. Their safety becomes a crucial issue since any failure may cause catastrophic consequences. The aim of the paper is to show the results of comprehensive FEM numerical investigation focused on the response of cylindrical steel tanks under mining tremors and moderate earthquakes. The effects of different levels of liquid filling, the influence of non-uniform...
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Modeling lignin extraction with ionic liquids using machine learning approach
PublicationLignin, next to cellulose, is the second most common natural biopolymer on Earth, containing a third of the organic carbon in the biosphere. For many years, lignin was perceived as waste when obtaining cellulose and hemicellulose and used as a biofuel for the production of bioenergy. However, recently, lignin has been considered a renewable raw material for the production of chemicals and materials to replace petrochemical resources....
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Evaluation of antimicrobial activities of powdered cuttlebone against Klebsiella oxytoca, Staphylococcus aureus, and Aspergillus flavus
PublicationBackground: The presence of medicines in the environment is considered as a serious threat to the human health. The entrance of these substances into the water sources causes soil pollution, which eventually leads to the environmental pollution and it creates some problems for the public health. Also, increasing antibiotic resistant bacteria has attracted the attention of researchers to the use of natural resources such as marine...
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Modeling and Accuracy Assessment of Determining the Coastline Course Using Geodetic, Photogrammetric and Satellite Measurement Methods: Case Study in Gdynia Beach in Poland
PublicationThe coastal environment represents a resource from both a natural and economic point of view, but it is subject to continuous transformations due to climate change, human activities, and natural risks. Remote sensing techniques have enormous potential in monitoring coastal areas. However, one of the main tasks is accurately identifying the boundary between waterbodies such as oceans, seas, lakes or rivers, and the land surface....
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Wetlands in flux: looking for the drivers in a central European case
PublicationPlanet Earth is undergoing significant changes which are driven by natural and anthropogenic factors. However, it is difficult to identify the drivers and their effect on the environment and ecosystems because there are many interdependencies. In this study we present a multi-parameter approach to assess the effect of changes in human-induced and natural drivers on a wetland ecosystem. The study area is one of the most prominent...
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Converting beach wrack into a resource as a challenge for the Baltic Sea (an overview)
PublicationThe paper distinguishes beach wrack, the marine generated organic part of beach cast, as a separate management object and discusses research questions related to its management and economically viable use. Based on experiences from the Baltic Sea and existing practices from countries with different management systems clear distinction between the management of natural and anthropogenic components of cast material is seen as an...
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Presja demograficzna – wyzwanie czy porażka
PublicationTrwający od 1990 roku dynamiczny rozwój polskiego szkolnictwa wyższego był wynikiem przemian ustrojowych oraz utrzymującego się niemal piętnaście lat wyżu demograficznego. Rozpoczęcie procesu umasowienia szkolnictwa wyższego w Polsce było zapewne wynikiem nie tylko długotrwałego demograficznego wyżu, ale i zwiększenia aspiracji edukacyjnych Polaków (efektem czego był również rosnący odsetek osób zdających egzamin maturalny)....
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Experimental and theoretical solubility advantage screening of bi-component solid curcumin formulations
PublicationA comprehensive experimental and theoretical screening was performed for identification of curcumin solubilizers. Experimental data led to formulation of a non-linear QSPR model correlating molecular descriptors with measured solubilities. The majority of synthesized binary systems exhibited a moderate enhancement of curcumin solubility, which was found to be the highest in the case of curcumin cocrystallized with pyrogallol. New...
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Odzysk fosforu przyszłością oczyszczalni ścieków. Część I: Fosfor jako surowiec strategiczny
PublicationFosfor jest jednym zasobów nieodnawialnych naszej planety, a jego złoża powoli się wyczerpują. Ze względu na coraz szybciej rozwijające się rolnictwo i przemysł, zapotrzebowanie na fosfor na świecie rośnie w bardzo szybkim tempie. Fakt, że jego złoża naturalne nie są rozmieszczone na całej ziemi równomiernie może w przyszłości prowadzić do konfliktów na tle socjoekonomicznym. Rozwiązaniem może okazać się wdrażanie w oczyszczalniach...
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Computational intelligence-aided character animation
PublicationW pracy przedstawiono pokrótce metody animacji komputerowej, a także podano zasady oceny jakości wyniku animacji postaci. Dodatkowo dokonano przeglądu metod inteligentnych stosowanych w animacji komputerowej i w dziedzinach pokrewnych. W badaniach skupiono się na animacji ruchu w kontekście uzyskiwanej ekspresji. Podano reguły stosowane w animacji tradycyjnej oraz wyznaczono parametry opisujące fazy ruchu w odniesieniu do poszczególnych...
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Badania empiryczne związane z ewolucją języków - wybrane zagadnienia
PublicationAlthough language evolution is an area in science yet to be developed, its foundations lay on empirical research. The aim of this article is to present three categories of ways to get empirical data on language evolution: observing language in laboratory, monitoring animal communication and analysing pidgins and creoles. The part of the paper about language in laboratory bases on English-language articles presenting the experiments...
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Tin Oxide Encapsulated into Pyrolyzed Chitosan as a Negative Electrode for Lithium Ion Batteries
PublicationTin oxide is one of the most promising electrode materials as a negative electrode for lithium-ion batteries due to its higher theoretical specific capacity than graphite. However, it suffers lack of stability due to volume changes and low electrical conductivity while cycling. To overcome these issues, a new composite consisting of SnO2 and carbonaceous matrix was fabricated. Naturally abundant and renewable chitosan was chosen...
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Projekt edukacyjny "Przestrzeń Wokół Nas" - metody i narzędzia w upowszechnianiu świadomości architektonicznej (przestrzennej)
PublicationProjekt edukacyjny Przestrzeń Wokół Nas ma na celu pokazać, w jaki sposób i przy pomocy jakich narzędzi można uczyć dzieci o otaczającej nas przestrzeni – jak ją wartościować, jak kształtować, kto ma wpływ na jej kształtowanie i jak chronić jej cenne elementy. Ma również pomóc w zrozumieniu idei zrównoważonego rozwoju oraz wpływu działalności człowieka na środowisko naturalne. Jego celem jest m. in. promocja świadomości i tożsamości...
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Zarządzanie mobilnością w nowoczesnych sieciach IP Część I: Potrzeby, wymagania i podstawowe rozwiązania
PublicationW artykule - stanowiącym I część większej całości, poświęconej protokołom mobilności - przedstawiamy krótką charakterystykę rynku teleinformatycznego i wymagań nowych usług sieciowych, porównując je z możliwościami funkcjonalnymi oferowanymi przez współczesne systemy i sieci, tak przewodowe jak i bezprzewodowe. Dalsza analiza obejmuje ograniczenia architektury TCP/IP w aspekcie obsługi urządzeń mobilnych. Bierzemy tu pod uwagę...
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Zdolność roślin do bioakumulacji. Wykorzystanie w fitoremediacji i fitogórnictwie
PublicationMetale ciężkie stanowią główny składnik skorupy ziemskiej. Występują również jako zanieczyszczenia w różnych typach próbek środowiskowych. Część z nich stanowi składniki niezbędne dla organizmów żywych, ale zarówno ich niedobór jak i nadmiar jest niebezpieczny. Wyniki badań nad wpływem metali ciężkich na organizm ludzki przyczyniły się do wzrostu zainteresowania nad technologiami remediacyjnymi. Technologie te zapewniają możliwość...
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Theoretical Design of the Molecular Structure of Bent-Core Mesogens with Large Second-Order Nonlinear Optical Properties
PublicationABSTRACT: The first hyperpolarizability of two series of moleculeswith bent-shaped structures has been calculated at the ab initio level.The two series consist of carboxyl derivatives for which somemolecules are known to exhibit banana phases and of their sulfinatehomologues that have not been synthesized yet. The final purpose isto reveal the relevance or not in synthesizing these latter molecules.The strategy is based on reporting...
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Energooszczędne urządzenia w instalacjach chłodniczych i klimatyzacyjnych
PublicationZmiany przepisów i obostrzenia wymagań w odniesieniu do ochrony środowiska wymagają radykalnych działań zarówno w stosunku do stosowanych czynników chłodniczych, jak i konstrukcji stosowanych urządzeń. Wiele z tych przepisów będzie prawdopodobnie podwyższać koszt budowy i zakupu nowych układów. Aby ograniczyć szkodliwe oddziaływanie na środowisko naturalne wprowadzane są nowe, alternatywne czynniki robocze. Jednak zmieniane są...
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Merging extremum seeking and self-optimizing narrowband interference canceller - overdetermined case
PublicationActive cancellation systems rely on destructive interference to achieve rejection of unwanted disturbances entering the system of interest. Typical practical applications of this method employ a simple single input, single output arrangement. However, when a spatial wavefield (e.g. acoustic noise or vibration) needs to be controlled, multichannel active cancellation systems arise naturally. Among these, the so-called overdetermined...
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The accessibility, necessity, and significance of certified reference materials for total selenium content and its species to improve food laboratories' performance
PublicationMicronutrients are one of the most important groups of nutrients that our body needs daily in trace amounts to tackle deficiencies. Selenium (Se) is a mineral that occurs naturally in foods and is an essential component of selenoproteins that support the healthy functioning of the human body. Therefore, monitoring dietary Se concentrations must be a higher priority to meet daily intakes. Fulfillment can be addressed through applying...
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Nośność stalowych słupów złożonych z kształtowników giętych na zimno o przekroju poprzecznym otwartym z dodatkowymi gałęziami przylgowymi.
PublicationW niniejszej pracy opisano zagadnienie wzajemnej współpracy gałęzi przylgowo złożonego słupa wykonanego z kształtowników wykonanych w technologii gięcia na zimno. Przedstawiono proces przygotowania eksperymentu laboratoryjnego wykonanego w skali naturalnej, przebieg badań oraz sposób wykonania modelu numerycznego w programie Abaqus. Wyniki analizy numerycznej porównano z wynikami eksperymentu. Na tej podstawie dokonano walidacji...