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Search results for: de laval nozzle
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Modeling Object Oriented Systems via Controlled English Verbalization of Description Logic
PublicationThe need for formal methods for Object Oriented (OO) systems resulted in methods like UML and Lepus3 that are de-facto graphical languages equipped with formal tools that are able to handle the design of OO systems. However, they lack precise semantics which might lead to problems, such as inconsistencies or redundancies. On the other hand, to our knowledge, there is no approach that allows one to understand and follow the requirements...
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Numeryczna analiza zagrożenia powodziowego na odcinku starego koryta Raduni w Kolbudach
PublicationPodczas pracy nad określeniem zagrożenia powodziowego w Kolbudach przeanalizowano nieustalony proces transformacji fali powodziowej na starym odcinku Raduni. W tym celu określono hydrogram hipotetycznej fali wezbraniowej o określonym prawdopodobieństwie występowania (p=1%) w przekroju jazu Kolbudy. Przemieszczająca się w korycie rzeki fala wezbraniowa jest zjawiskiem zmiennym w czasie, do opisu, której stosuje się równania nieustalonego...
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Improvement of derivatized amino acid detection sensitivity in micellar electrokinetic capillary chromatography by means of acid-induced pH-mediated stacking technique
PublicationDerivatization is a frequently used sample prepara-tion procedure applicable to the enhancement of analyte de-tection sensitivity. Amino acids mostly require derivatization prior to electrophoretic or chromatographic analysis, especial-ly if spectrophotometric detection is used. This study presents an on-line preconcentration technique for derivatized amino acids. The sensitivity of the method was improved by the utilization of...
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The LaPdIn 4 indide and elementary properties of the LaTIn 4 ( T = Ni, Pd, Pt) materials family
PublicationThe indium-rich intermetallic compound LaPdIn4 is reported, prepared by arc-melting and annealing at 600 C. Single crystal X-ray diffraction found the material to be orthorhombic, space group Cmcm (No. 63), with lattice parameters a ¼ 4.5462(3) Å, b ¼ 16.9208(10) Å, and c ¼ 7.3100(5) Å. This previously unreported indide is isostructural with LaNiIn4 and LaPtIn4. It is demonstrated that all three compounds in the LaTIn4 (T ¼ Ni,...
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Specification-Oriented Automatic Design of Topologically Agnostic Antenna Structure
PublicationDesign of antennas for modern applications is a challenging task that combines cognition-driven development of topology intertwined with tuning of its parameters using rigorous numerical optimization. However, the process can be streamlined by neglecting the engineering insight in favor of automatic de-termination of structure geometry. In this work, a specification-oriented design of topologically agnostic antenna is considered....
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Roughness evaluation of turned composite surfaces by analysis of the shape of Autocorrelation Function
PublicationIn this paper, the application of an Autocorrelation Function for the characterisation of surface topography was validated. The roughness evaluation of turned composite surfaces was supported by sophisticated studies of the Autocorrelation Function properties, considering especially the shape of the function. Details were measured with the optical method. The selection of the surface roughness evaluation procedures was carried...
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The effect of beech wood (Fagus sylvatica L.) steaming process on the colour change versus depth of tested wood layer
PublicationThe results of experimental research on the colour changes of beech wood at different depths of the tested layer are presented. Beech wood (Fagus sylvatica L.) dried in a conventional kiln was tested. Half of the wood samples were steamed prior to the drying process. Colour changes were measured at various depths after the face milling process was used to remove the material to expose to the deeper surface. The colour changes were...
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Stable isotopes unveil one millennium of domestic cat paleoecology in Europe
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Targeted DNA oxidation by LSD1–SMAD2/3 primes TGF-β1/ EMT genes for activation or repression
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Low prevalence of CDKN2A/ARF mutations among early-onset cancers of breast, pancreas and malignant melanoma in Poland
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Polymorphisms in nucleotide excision repair genes and susceptibility to colorectal cancer in the Polish population
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Molecular Classification of Low-Grade Diffuse Gliomas
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Association between use of enhanced recovery after surgery protocols and postoperative complications in colorectal surgery in Europe: The EuroPOWER international observational study
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Werkzeugübergreifende Konsistenzsicherung von Artefakten bei der Entwicklung softwarebasierter Systeme im Automobil
PublicationDie Entwicklung von eingebetteten Systemen im Auto mobilbereich zeichnet sich zunehmend durch steigende Komplexität der zu entwickelnden Fahrzeugfunktionen aus. Die Handhabung dieser Kompl exität wird über entsprechend mächtige Werkzeuge, welche die verschi edenen Aktivitäten des Softwareentwicklungsprozesses unterstützen, angestr ebt. Als eine Schwachstelle erweist sich dabei, dass die eingesetzten Werkzeugk etten im Automobilbereich...
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Analysis of Airport Runoff Waters
PublicationA particularly important facet of airport operation is the impact of the pollution caused byrunoff waters. Runoff waters at an airport may contain relatively high concentrations of differentcontaminants resulting from the various aspects of its operation: de/anti-icing operations,washing and cleaning operations, spills of fuel and lubricants, exhaust fumes, and weed removal.The pollution caused by airport operations affects soil,...
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Image Segmentation of MRI image for Brain Tumor Detection
Publicationthis research work presents a new technique for brain tumor detection by the combination of Watershed algorithm with Fuzzy K-means and Fuzzy C-means (KIFCM) clustering. The MATLAB based proposed simulation model is used to improve the computational simplicity, noise sensitivities, and accuracy rate of segmentation, detection and extraction from MR...
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Effective rheological parameters of emulsion during their generation in the agitated draft - tube reactor
PublicationBadano właściwości reologiczne emulsji O/W i W/O w warunkach ich wytwarzania w pętlicowym reaktorze dwukolumnowym z mieszaniem w strefie wznoszenia. Obliczano lepkość pozorną emulsji, wykorzystując model potęgowy Ostwalda - de Waele, w którym szybkość ścinania obliczano jako stosunek prędkości pozornej dyspersji ciecz - ciecz w strefie opadania reaktora i szerokości strefy opadania. W celu identyfikacji typu emulsji mierzono przewodnictwo...
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Mikrosiłownia domowa jako źródło energii cieplnej i elektrycznej
PublicationObiektem rozważań podejmowanych w ramach pracy jest kocioł gazowy sprzężony z laboratoryjnym modułem mikro-ORC. W badaniach zasto-sowano komercyjny kocioł, przeznaczony do użytkowania w gospodar-stwach domowych. Jest to kocioł gazowy firmy De Dietrich (DTG X23N) o mocy cieplnej 25 kW. Przy wyborze kotła jako źródła ciepła kierowano się jak największą popularnością pod kątem mocy grzewczej całej jednostki ORC w gospodarstwach domowych....
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Hydrogen production from biomass using dark fermentation
PublicationHydrogen applicability in the power, chemical and petrochemical industries is constantly growing. Efficientmethods of hydrogen generation from renewable sources, including waste products, are currently being de-veloped, even though hydrogen is mainly produced through steam reforming or thermal cracking of natural gasor petroleum fractions. In paper alternative methods of hydrogen production with a particular emphasis on darkfermentation...
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Volumetric and torque efficiency of pumps during start-up in low ambient temperatures
PublicationThe volumetric, torque and total efficiency of hydraulic pumps change during start-up in low ambient temperatures, as well as in thermal shock conditions, un-til they reach the set conditions. The time to reach steady-state conditions de-pends on many parameters: ambient temperature, flow rate, fluid temperature, design of hydraulic units. The author carried out tests of hydraulic pumps in the Hydraulics Laboratory of the Faculty...
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Limonene: electronic state spectroscopy by high-resolution vacuum ultraviolet photoabsorption, electron scattering, He(I) photoelectron spectroscopy and ab initio calculations
PublicationZbadano limonen metodami spektroskopii absorpcyjnej, elektronowej, fotojonizacyjnej. Wyniki porównano z obliczeniami ab initio. Otrzymano strukturę wibracyjną molekuły.
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Nuevas prácticas escénicas y dramáticas: fenómenos parateatrales, no teatrales o antiteatrales
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DIMEO ÁLVAREZ, Carlos, WENDORF, Anna (coord.), Reflexiones sobre la literatura venezolana. Un estudio monográfico. Bielsko-Biała: ATH Akademia Techniczno-Humanistyczna, University of Bielsko-Biała, 2015. 221 pp. ISBN: 978-83-65182-28-9
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Nonlinear multipoint boundary value problems for second order differential equtions
PublicationPraca dotyczy problemow brzegowych dla rownan rozniczkowych rzedu drugiego z odchylonymi argumentami zaleznymi od rozwiazania. Podano warunki dostateczne na istnienie ekstremalnych rozwiazan. Poroblem istnienia jedynego rozwiazania tez byl przedmiotem badan. Podano dwa przyklady ilustrujace otrzymane wyniki.
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The good, the bad, and the ugly: space use and intraguild interactions among three opportunistic predators—cat (Felis catus), dog (Canis lupus familiaris), and red fox (Vulpes vulpes)—under human pressure
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Ragged Robin (Lychnis flos-cuculi) - a plant with potential medicinal value
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A Measurable Selector in Kadison’s Carpenter’s Theorem
PublicationWe show the existence of a measurable selector in Carpenter’s Theorem due to Kadison. This solves a problem posed by Jasper and the first author in an earlier work. As an application we obtain a characterization of all possible spectral functions of shift-invariant subspaces of L 2 (R d ) and Carpenter’s Theorem for type I ∞ von Neumann algebras.
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A novel concept of enhanced direct-contact condensation of vapour- inert gas mixture in a spray ejector condenser
PublicationAn analytical model of direct steam condensation (DCC) in the novel idea of spray ejector condenser (SEC) in the presence of inert gas has been developed. It is based on continuity, momentum and energy equations for the steam-carbon dioxide mixture and direct contact condensation mechanisms due to heat transfer and concentration. Crucial in the process of DCC is atomisation of the motive fluid in the ejector. The effect of atomised...
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Direct-contact condensation from vapour- gas mixture in a spray ejector condenser for negative CO2 power plant
PublicationDirect-contact condensation of vapour containing the inert gas on a spray of subcooled liquid exists in a number of technical applications. For example, it may be found in the nuclear industry (e.g. pressurized jet under normal operating conditions, in safety analyses) or in the chemical industry (e.g. mixing-type heat exchanger, degasser, sea water desalting). The problem is also essential to modelling and analysis of some...
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Efficacy and safety of idelalisib in patients with relapsed, rituximab- and alkylating agent-refractory follicular lymphoma: a subgroup analysis of a phase 2 study
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Preparation and characterisation of solution-cast Nafion membrane
PublicationNafion is a commercial name for a perfluorosulfonic polymer, which has been developed in 1962 by Dupont de Nemours. This polymer consists of a polytetrafluoroethylene backbone and regular spaced long perfluorovinyl ether pendant side chains terminated by a sulfonate ionic group. These sulfonate groups are responsible for cation-exchange properties of Nafion. Thanks to the ion-exchange properties, water permeability, good chemical,...
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Comparison of calculated and measured thermal stresses in asphalt concrete
PublicationThe paper presents the comparison of calculated and measured thermal stresses induced in restrained asphalt concrete specimens by cooling. Thermal stresses were measured in the Thermal Stress Restrained Specimen Test. The calculations of thermal stresses were performed with the use of a theoretical formula based on the temperature dependent stiffness modulus. The novel approach applied in this paper was that the stiffness modulus...
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The Origins of the Concept of Ideology
PublicationThe concept of "ideology" as, firstly, a term that points at non-epistemological conditioning of cognitive processes, and, secondly, as a term which aimed at disclosing the ancillary role of given ideas in regard to specific political interests of certain groups, has long history. Since Francis Bacon's theory of idols modern philosophy endavoured to create a comprehensive classification of systematic cognitive errors which divert...
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Buenos Aires – Toward Comprehensive Development and Sustainable Mobility
PublicationThis paper is introducing Buenos Aires’ achievements and challenges in implementing comprehensive development and integrating efficient and sustainable transport system within its urban structure. There are several important steps in this process starting from urban regeneration of Puerto Madero, the introduction and then implementation of a strategic plan Modelo territorial (2010) and of Buenos Aires' Plan de Movilidad Sustentable...
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Characterization of home-made and regional fruit wines by evaluation of correlation between selected chemical parameters
PublicationSince the last decade of the 20th century, there has been rising interest in the production of fruit wines, as evidenced by the high number of published papers and books covering this matter. When aiming to produce quality fruit wines, it is essential to evaluate the analytical parameters of the beverage. In this context, there are a large number of analyses for the evaluation of wines and fruit wines. This article characterizes...
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Determination of selected parameters in a 1D open channel flow model
PublicationOkreślenie parametrów jest ważnym etapem tworzenia modelu matematycznego. W przypadku jednowymiarowego modelu przepływu ze swobodną powierzchnią opisanego układem równań de Saint-Venanta, jedną z grup parametrów wymagających identyfikacji są parametry związane z tarciem. Mogą one być określone w różny sposób, ale w większości przypadków problem ten stanowi zagadnienie żle postawione. W takich przypadkach najczęściej stosowaną...
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Society 4.0: Issues, Challenges, Approaches, and Enabling Technologies
PublicationThis guest edition of Cybernetics and Systems is a broadening continuation of our last year edition titled “Intelligence Augmentation and Amplification: Approaches, Tools, and Case Studies”. This time we cover research perspective extending towards what is known as Society 4.0. Bob de Vit brought the concept of Society 4.0 to life in his book “Society 4.0 – resolving eight key issues to build a citizens society”. From the Systems...
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Low-Barrier Hydrogen Bond Determines Target-Binding Affinity and Specificity of the Antitubercular Drug Bedaquiline
PublicationThe role of short strong hydrogen bonds (SSHB) in ligand-target binding remains largely unexplored, thereby hin- dering a potentially important avenue in the rational drug de- sign. Here, we investigate the interaction between bedaquiline (Bq), a potent anti-tuberculosis drug, and the mycobacterial ATP synthase, to unravel the role of a specific hydrogen bond to a conserved acidic residue in the target affinity and specificity....
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The Opening of Central and Eastern European Countries to Free Trade: A Critical Assessment
PublicationThree decades after the fall of the Berlin wall and one and a half decades after the Big Bang enlargement of the European Union (2004-2007), we revisit contrasting narratives about the benefit of both free trade and the EU enlargement for Central and Eastern European (CEE) countries. We distinguish old, pre-2004 EU countries from CEE countries that joined the EU in 2004-2007, as well as from the CEE countries that have not become...
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Evaluation of Street Lighting Efficiency Using a Mobile Measurement System
PublicationThe issue concerns the initial stage of work on a method for performing a rapid assessment of the energy efficiency and illuminance of a street lighting installation. The proposed method is based on simultaneous measurement of illuminance from three lux meters placed on the roof of the vehicle. The data are acquired in road traffic, while the vehicle is driving. The proposed solution will allow in the future to quickly and reproducibly...
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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
PublicationIn 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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Labeler-hot Detection of EEG Epileptic Transients
PublicationPreventing early progression of epilepsy and sothe severity of seizures requires effective diagnosis. Epileptictransients indicate the ability to develop seizures but humansoverlook such brief events in an electroencephalogram (EEG)what compromises patient treatment. Traditionally, trainingof the EEG event detection algorithms has relied on groundtruth labels, obtained from the consensus...
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Experiences of people with dementia and informal caregivers with post‐diagnostic support: Data from the international COGNISANCE study
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Common variants of xeroderma pigmentosum genes and prostate cancer risk
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MC1R common variants, CDKN2A and their association with melanoma and breast cancer risk
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Common variants of DNA repair genes and malignant melanoma
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Sustainable development on the background of a general theory of regional development
PublicationThe article focuses on a presentation and discussion of the concept of "sustainable de-velopment" (SD). It contains an analysis of the concept, its characteristics, objectives and principles of implementation. Particular emphasis has been placed on presentation of the unique features of sustainable development that distinguish it from other theories of regional development. Therefore, the discussion has been preceded by a discussion...
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Structural Design and Sensitivity Analysis of Semi-Rigid Pavement of a Motorway
PublicationThis paper presents application of mechanistic-empirical methods in design of semi-rigid pavement for a section of a motorway in Poland. The stage construction was assumed. Three fatigue criteria were applied in the design. For asphalt fatigue cracking and subgrade soil the criteria from the Asphalt Institute (1981) were applied. For fatigue cracking of cement stabilized bases the Dempsey (1984) and De Beer (1992) criteria were...
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Analiza wpływu produktów biodegradacji polikaprolaktonu modyfikowanego skrobią na populację cyjanobakterii
PublicationBiodegradacja, jako jedna z najnowszych metod remediacji środowiska naturalnego, znalazła swoje zastosowanie również w przypadku tworzyw sztucznych. Na rynku pojawiły się nowe polimery de-gradowalne ulegające destrukcji na drodze procesów biologicznych. Tradycyjne polimerowe opako-wania, stwarzające problem z utylizacją, są wypierane przez opakowania biodegradowalne (m.in. z Mater-Bi, PLA czy PCL), przeznaczone głównie do kompostowania....
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A mathematical model of rheological behavior of novel bio-based isocyanate-terminated polyurethane prepolymers
PublicationIn this paper, the results of rheological study on isocyanate-terminated polyurethane prepolymers, containing modified soybean oil residues incorporated into the chemical structure are described. Isocyanate-terminated prepolymers were synthesized from 4,4′-diphenylmethane diisocyanate and the mixture of hydroxylated soybean oil and commercial polyether. The measurements were performed by using rotary rheometer R/S-CPS+ (Brookfield,...