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Search results for: PEHD V. PVC
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Strukturuvannaa epoksi-oligoesternih sumiščej v prisutnosti peroksidnoï pohidnoï epoksidnoï smoli ED-20
PublicationW pracy przedstawiono wyniki badań sieciowania mieszanin epoksyoligoestrów opartych na żywicy epoksydowej ED-20 (w tym modyfikowanej) oraz m.in. na oligoestroakrylanie TGM-3, przy czym jako utwardzacz zastosowano polietylenopoliaminę (PEPA).Usieciowane tworzywa analizowano pod kątem wpływu składu mieszaniny, ilości poszczególnych składników, jak również czasu i temperatury prowadzenia procesu na zawartość frakcji żelowej oraz twardość...
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Tuning a Hybrid GPU-CPU V-Cycle Multilevel Preconditioner for Solving Large Real and Complex Systems of FEM Equations
PublicationThis letter presents techniques for tuning an accelerated preconditioned conjugate gradient solver with a multilevel preconditioner. The solver is optimized for a fast solution of sparse systems of equations arising in computational electromagnetics in a finite element method using higher-order elements. The goal of the tuning is to increase the throughput while at the same time reducing the memory requirements in order to allow...
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Degradation of Rhodamine dyes by Advanced Oxidation Processes (AOPs) – Focus on cavitation and photocatalysis - A critical review
PublicationThis review evaluates selected advanced oxidation processes (AOPs) - cavitation and photocatalysis - successfully used for wastewater treatment towards degradation of Rhodamine (Rh) dyes. Reactor configuration and impact of process parameters and oxidants addition (hydrogen peroxide, ozone, persulfates) on degradation effectiveness along with degradation mechanisms are discussed. Best technologies provide 100% degradation within...
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A new type of (TiZrNbTaHf)N/MoN nanocomposite coating: Microstructure and properties depending on energy of incident ions
PublicationA novel (TiZrNbTaHf)N/MoN nanocomposite coatings, which consist of the nitride of the high-entropy alloy and the binary nitride, were synthesized by vacuum-arc deposition at various substrate biases. The elemental composition, chemical bonding state, phase structure, microstructure and mechanical properties of the coatings were studied by high-resolution experimental methods: SIMS, GDMS, XPS, XRD, HR-TEM and nano-indentation. It...
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New coordination polymers based on a V-shaped ligand and lanthanides: Structural description and symmetry-luminescence correlation using europium as a probe
PublicationWe have synthesized new luminescent coordination polymers using 4,4'-sulfonyldibenzoic acid (H2SDA) and several lanthanide ions by open crystallization in DMF. Three different 1-D structures were obtained, as determined by single-crystal X-ray diffraction: [La(η2-NO3)(μ-SDA)(DMF)3]n (1), [Sm(η2-NO3)(μ-SDA)(DMF)2 2DMF]n (3), [Ln(η2-NO3)(μ-SDA)(DMF)2 DMF]n (Ln ¼ Eu (4), Dy (5), Ho (6), Er (7), Tm (8) and Lu(9)). A 2-D structure,...
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Bonding of Molybdenum(V) to Poly(ethylene-co-methacrylic acid) Ionomers from X- and W-Band ESR and IR Spectroscopies
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Insight into Potassium Vanadates as Visible-Light-Driven Photocatalysts: Synthesis of V(IV)-Rich Nano/Microstructures for the Photodegradation of Methylene Blue
PublicationPhotocatalysis is regarded as a promising tool for wastewater remediation. In recent years, many studies have focused on investigating novel photocatalysts driven by visible light. In this study, K2V6O16·nH2O nanobelts and KV3O8 microplatelets were synthesized and investigated as photocatalysts. Samples were obtained via the facile method based on liquid-phase exfoliation with ion exchange. By changing the synthesis temperature...
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Effects of UV light irradiation on fluctuation enhanced gas sensing by carbon nanotube networks
PublicationThe exceptionally large active surface-to-volume ratio of carbon nanotubes makes it an appealing candidate for gas sensing applications. Here, we studied the DC and low-frequency noise characteristics of a randomly oriented network of carbon nanotubes under NO2 gas atmosphere at two different wavelengths of the UV light-emitting diodes. The UV irradiation allowed to sense lower concentrations of NO2 (at least 1 ppm) compared to...
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Lower rim substituted tert-butyl calix[4]arene (part VII): ionophoric properties of calix[4]arene-crown-6 derivatives in plasticized PVC-membrane electrodes and in solution.
PublicationW pracy przedstawiono syntezę i charakterystykę otrzymanych produktów (2-9), pochodnych p-tert-butylokaliks[4]-korony-6. Zdolności kompleksujące tych związków badano w elektrodach jonoselektywnych, stosując te związki jako jonofory w plastyfikowanej membranie PCW.Wyznaczono wartości stałych trwałości kompleksów z jonami metali I grupy. Stwierdzono, że selektywność kompleksowania zależy od rozmiaru i natury podstawnika wprowadzonego...
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Bias-Dependent Dynamics of Degradation and Recovery in Perovskite Solar Cells
PublicationDegradation of perovskite solar cells (PSCs) is often found to be partially or fully reversible when the cells are allowed to recover in the dark. Unlike the dynamics of degradation, knowledge about the dynamics of PSC cell recovery is very limited. Here, we demonstrate that the PSC recovery strongly depends on the electrical bias conditions during the light-induced degradation and that it can be manipulated by applying an external...
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Tuning of High Spin Ground State and Slow Magnetic Relaxation within Trimetallic Cyanide‐Bridged {Ni II x Co II 9− x [W V (CN) 8 ] 6 } and {Mn II x Co II 9− x [W V (CN) 8 ] 6 } Clusters
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Hybrid Processing: the Impact of Mechanical and Surface Thermal Treatment Integration onto the Machine Parts Quality
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Concentrations and loads of metals (V, Cr, Mn, Fe, Cu, Zn, As, Rb, Y, Zr) from the cliff erosion to the Gulf of Gdansk
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Frontispiece: Tuning of High Spin Ground State and Slow Magnetic Relaxation within Trimetallic Cyanide‐Bridged {Ni II x Co II 9− x [W V (CN) 8 ] 6 } and {Mn II x Co II 9− x [W V (CN) 8 ] 6 } Clusters
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Grinding specifics of plasma coatings melted with high-frequency currents
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Evolution of magnetic and transport properties in (Cr1−xMnx)2AlC MAX-phase synthesized by arc melting technique
PublicationHerein we initiate a comeback to the arc melting technique to produce MAX-phase solid solutions. Bulk samples of (Cr1−xMnx)2AlC MAX-phase with X = 0, 0.025, 0.05 and 0.1 were synthesized and studied by means of X-ray diffractometry, scanning electron microscopy in combination with energy-dispersive X-ray spectroscopy. Samples were established to be homogeneous with an incorporation of Cr7C3, AlCr2 and Al2O3 secondary phases which...
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Artificial neural network prophecy of ion exchange process for Cu (II) eradication from acid mine drainage
PublicationThe removal of heavy metal ions from wastewater was found to be significant when the cation exchange procedure was used effectively. The model of the cation exchange process was built using an artificial neural network (ANN). The acid mine drainage waste’s Cu(II) ion was removed using Indion 730 cation exchange resin. Experimental data from 252 cycles were recorded. In a column study, 252 experimental observations validated the...
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Theoretical estimation of acid–base properties of Lewis and Brønsted centres at the V-W-O catalyst surface: water molecule as the probe in DFT calculations
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Coordination polymers based on octacyanometalates(iv,v) (M = Mo, W) and aliphatic polyamine copper(ii) tectons with [N3] donor atom sets
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Matrix Metalloproteinase-9 Is Required for Hippocampal Late-Phase Long-Term Potentiation and Memory
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Parametric optimization of hybrid metalworking machinery quality
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Integrated Processing: Quality Assurance Procedure of the Surface Layer of Machine Parts during the Manufacturing Step "Diamond Smoothing"
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EFFECTS OF DOPING ON STRUCTURE AND PHASE TRANSITION OF HIGH TEMPERATURE PROTON CONDUCTOR LaNb1-xMxO4-σ (M=As, Sb, V, Ta AND X=0,05 TO 0,3)
PublicationIn this work synthesis of lanthanum orthoniobate has been done. Doping by arsenic, antimony, vanadium or tantalum in 5% to 30% have been introduced. The relationship between doping type and percentage and structural properties of the material have been investigated.
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Application of INAA and ETAAS techniques for human samples analysis in evaluation of the impact of Gdansk Phosphatic Fertilizer Plant on its workers
PublicationW pracy przedstawiono wyniki badań wpływu Gdańskich Zakładów Nawozów Fosforowych na zdrowie pracowników. Oznaczano stężenia (techniką INAA) Al, As,Au, Br, Ca, Cl, Cu, Dy, I, In, K, La, Mg, Mn, Mo, Na, S, Sb, Sm, Ti, U, V,W, Zn we włosach, paznokciach i filtrach z pyłem zebranych od 21 pracowników fabryki oraz 5 osób z grupy kontrolnej nie związanej z zakładem. Ponadto oznaczono Cd, Cr, Cu, Fe, Mo, Ni i Zn w moczu przy użyciu...
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Increase in wear resistance of nickel plasma coatings under traditional and combined treatment conditions
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Efficiency of hybrid equipment combining operations of surface hardening by high frequency currents and abrasive grinding
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Research into properties of wear resistant ceramic metal plasma coatings
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Efficiency of environmental taxation in European countries: comparative analysis
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Mg2+ Doping Effects on the Structural and Dielectric Properties of CaCu3Ti4O12 Ceramics Obtained by Mechanochemical Synthesis
PublicationIn this study, ceramic CaCu3Ti4O12 (CCTO) and CaCu3−xMgxTi4O12 solid solutions in which 0.1 ≤ x ≤ 0.5 were prepared by the mechanochemical method, realized by a high‐energy ball milling technique. The effects of the Mg2+ ion concentration and sintering time on the dielectric response in the prepared ceramics were investigated and discussed. It was demonstrated that, by the use of a sufficiently high energy of mechanochemical treatment,...
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Yade-open DEM: an open-source software using a discrete element methodto simulate granular material
PublicationPurpose - YADE-OPEN DEM is an open source software based on the Discrete Element Method which uses object oriented programming techniques. The paper describes the softwarearchitecture.Design/methodology/approach - The DEM chosen uses position, orientation, velocity and angular velocity as independent variables of simulated particles which are subject to explicit leapfrog time-integration scheme (Lagrangian method). The three-dimensional...
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A new open-source software developed for numerical simulations usingdiscrete modeling methods
PublicationThe purpose of this work is to present the development of an open-source software based on a discrete description of matter applied to study the behavior of geomaterials. This software uses Object Oriented Programming techniques, and its methodology design uses three different methods, which are the Discrete Element Method (DEM) [F. Donzé, S.A. Magnier, Formulation of a three-dimensional numerical model of brittle behavior, Geophys....
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A dressing method in mathematical physics
PublicationMetodę ubierania stosuje się do równań nieliniowych całkowalnych i w teorii potencjałów całkowalnych mechaniki kwantowej.
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Observation and analysis of transient luminous events in the Earth's atmosphere
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Confined space effects driving to heterogenization of solutions at the interfaces
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Complex investigations of structural and thermal properties of silica-titania adsorbents
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Germline DNA Retention in Murine and Human Rearranged T Cell Receptor Gene Coding Joints: Alternative Recombination Signal Sequences and V(D)J Recombinase Errors
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Word Heritage List Possibilities of the Inscription = Vozmožnosti vklûĉeniâ ob`ektov v Spisok Mirovogo Naslediâ . [Możliwości wpisu obieków na Listę Swiatowego Dziedzictwa]
PublicationDotyczy przrdstawienia potencjlnych ''obiektów'' aplikujących do wpisu na Listę Światowego Dziedzictwa. przykłady omówione sa w kontekście nie spełniania szczegółowych zaleceń oraz możliwości wpisu. Dotyczy Gdańska, Lwowa, Czernowiec, Odessy.
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Rezolûciâ meždunarodnoj naučno-praktičeskoj konferencii ''Konstruktivizm v Ukraine'' 2004 g. [Rezolucja międzynarodowej naukowo- praktycznej konferencji ''Konstruktywizm w Ukrainie'' 2004 r.]
PublicationWspółautor rezolucji mówiącej o konieczności i metodach badan stanu istniejącego, roli , ochronie dziedzictwa, konstruktywizmu ukraińskiego.
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Absorbciâ vodoroda i povedenie vodoroda v slaâh titanovyh silavov s modificirovannoj poverhnost''û = Hydrogen absorption and hydrogen effects in the modified surface layers of Ti alloys
PublicationW pracy przedstawiono rezultaty badań absorpcji wodoru w stopach tytanu ze zmodyfikowaną za pomocą metod multipleksowych powierzchnią. W wyniku badań stwierdzono, iż po nadtapianiu laserowym w warunkach kriogenicznych, stopy tytanu wykazuja najwyższą zdolność absorpcji wodoru w wytworzonej warstwie wierzchniej.
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Eksploatacja napędów hydraulicznych w niskich temperaturach otoczenia. Część V. Metody określania parametrów prawidłowego rozruchu zespołów i układów hydraulicznych w warunkach szoku termicznego
PublicationW artykule przedstawiono metody określania parametrów prawidłowego rozruchu zespołów i układów hydraulicznych w warunkach szoku termicznego. Zasadniczym czynnikiem konstrukcyjnym, decydującym o dopuszczalnych parametrach uruchomienia zespołu hydraulicznego w warunkach szoku termicznego jest efektywny luz określający wielkość szczelin między powierzchniami współpracujących elementów. Tego typu luz dla dowolnego zespołu można określić...
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Methods for Measuring the Intellectual Capital of the Region: Approaches and Assessments
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Structural Stability of Nonautonomous Systems
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Sympathetic nerve activity in obstructive sleep apnoea
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Maxwell's approach to effective conductivity and its limitations
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Determining the operational loads of the hybrid metalworking machines drive
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The method of quantitative automatic metallographic analysis
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A high-accuracy complex-phase method of simulating X-ray propagation through a multi-lens system
PublicationThe propagation of X-ray waves through an optical system consisting of many X-ray refractive lenses is considered. For solving the problem for an electromagnetic wave, a finite-difference method is applied. The error of simulation is analytically estimated and investigated. It was found that a very detailed difference grid is required for reliable and accurate calculations of the propagation of X-ray waves through a multi-lens...
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ЯКІСТЬ МЕДИЧНИХ ПОСЛУГ: ЕКОНОМІЧНА СУТНІСТЬ ТА ІНТЕРПРЕТАЦІЯ
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Catalytic Degradation of Safranin T in Aqueous Medium Using Non-conventional Processes
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The features of steel surface hardening with high energy heating by high frequency currents and shower cooling
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