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Search results for: METAL IODATES
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Variable-Fidelity Simulation Models and Sparse Gradient Updates for Cost-Efficient Optimization of Compact Antenna Input Characteristics
PublicationDesign of antennas for the Internet of Things (IoT) applications requires taking into account several performance figures, both electrical (e.g., impedance matching) and field (gain, radiation pattern), but also physical constraints, primarily concerning size limitation. Fulfillment of stringent specifications necessitates the development of topologically complex structures described by a large number of geometry parameters that...
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Synthesen, Strukturen und Reaktionsverhalten von Metallalkoxiden
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Microbiological corossion of metallic products as a result of biofilm
PublicationWarunkiem do pojawienia się korozji mikrobiologicznej jest utworzenie na powierzchni metalu biofilmu. Zawiera on biologicznie czynne mikroorganizmy wraz z produktami ich przemian metabolicznych. Biofilm ogranicza dyfuzję produktów metabolizmu wytwarzanych przez poszczególne komórki mikrokolonii. Powoduje to, że produkty uboczne tych przemian gromadzą się w bezpośrednim sąsiedztwie metalu. Gdy powierzchnia metalu nie jest odporna...
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The speciation and physico-chemical forms of metals in surface waters and sediments
PublicationWody powierzchniowe mogą być zanieczyszczone przez metale występujące w różnych formach fizykochemicznych przez metale w postaci jonowej jak i również metale związane z materia zawieszoną. Substancje nierozpuszczone występujące w postaci koloidów lub w postaci zaabsorbowanej na powierzchni materii zawieszonej mogą ulegać procesowi rozpuszczania w odpowiedzi na zamianę warunków chemicznych i fizycznych środowiska wodnego.Również...
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Badania spektroskopowe wybranych silanotiolanów metali o budowie polimerycznej
PublicationPodjęto próby otrzymania tri-tert-butoksysilanotiolanowych kompleksów niklu(II), kobaltu(II), cynku(II) i kadmu(II) o budowie polimerycznej mogących pełnić rolę prekursorów w syntezie materiałów funkcjonalnych. W tym celu przeprowadzono syntezy odpowiednich silanotiolanowych metali z grupą diamin alifatycznych. Otrzymano szereg nowych obojętnych polimerów koordynacyjnych o budowie przestrzennej typu 1D. Dla siedmiu z nich zostały...
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Zawartość wybranych metali ciężkich w makrofitach oczyszczalni hydrofitowej
PublicationW artykule omówiono rozmieszczenie wybranych metali ciężkich (Cd, Pb, Zn, Cu, Fe, i Mn) w ekosystemie oczyszczalni hydrofitowej o przepływie powierzchniowym w miejscowości Bielkowo w województwie pomorskim. Analizowany obiekt znajduje się na cieku będącym dopływem Jeziora Goszyńskiego, na którym zlokalizowane jest ujęcie wody pitnej dla Gdańska i służy do oczyszczania spływów powierzchniowych z pól uprawnych. Badano rozmieszczenie...
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Preparatyka próbek do badań metalograficznych zjawiska pylenia metalu
PublicationW artykule opisano zjawisko pylenia metalu w żelazie i stali oraz przedstawiono preparatykę próbek materiału do badań metalograficznych mechanizmu korozji. Powłoka niklowa chroni powierzchnię próbki przed uszkodzeniami mechanicznymi i ułatwia przygotowanie zgładów metalograficznych.
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Zuranolone – synthetic neurosteroid in treatment of mental disorders: narrative review
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Obesity-related hypertension: relevance of vascular responses to mental stress
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Detal architektury mieszkaniowej Lwowa XIX i XX wieku
PublicationMonografia detalu kamienicy lwowskiej w okresie późnego klasycyzmu, historyzmu, secesji, modernizmu, socrealizmu i czasów współczesnych.
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Deep brain stimulation: new possibilities for the treatment of mental disorders
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Rosja mentalna Miłosza [C. Miłosz’s Russia as a Mental Concept]
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Solar Photocatalytic Degradation of Sulfamethoxazole by TiO2 Modified with Noble Metals
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Warzywa jako narzędzie wykorzystywane w biomonitoringu metali ciężkich
PublicationW ostatnich dekadach miały miejsce istotne zmiany w gospodarce i to zarówno w skali globalnej jak i regionalnej oraz lokalnej. W sposób istotny wzrosło zapotrzebowanie na energię, transport ludzi i towarów. Tym zmianom w coraz większym stopniu towarzyszy wzrost dbałości o stan środowiska. Dlatego też coraz więcej uwagi zwraca się na coraz dokładniejszy monitoring i kontrolę poziomu zanieczyszczenia poszczególnych elementów środowiska...
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Metals in the environment as risk factors for infectious diseases: gaps and opportunities
PublicationThis chapter aims to provide insights into current knowledge and gaps in our understanding of the influence that trace metals in the environment have on the pathogenesis of infectious diseases. By reducing immune function, trace metal deficiencies may substantially contribute to the global burden of diarhea, pneumonia, and malaria. Improved methods and biomarkers for assessing the risk of trace metals deficiencies and toxicities...
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Disorders of the Reproductive Health of Cattle as a Response to Exposure to Toxic Metals
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Complexation of Bioelements and Toxic Metals by Polyphenolic Compounds - Implications for Health
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Akumulacja metali ciężkich w wybranych gatunkach ryb bałtyckich
PublicationJednym z naturalnych składników basenów wodnych są metale ciężkie, jednak działanie czynników antropogenicznych powoduje, iż stężenie tych substancji chemicznych niekiedy wzrasta do poziomów zagrażających bezpośrednio wodnej florze i faunie oraz pośrednio zdrowiu człowieka. Celem badań była ocena skażenia mięsa bałtyckich ryb metalami ciężkimi. W ramach przeprowadzonych badań analizie zostały poddane następujące gatunki ryb: makrela...
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The Reactivity of Phosphanylphosphinidene Complexes of Transition Metals Toward Terminal Dihaloalkanes
PublicationThe reactivities of phosphanylphosphinidene complexes [(DippN)2W(Cl)(η2-P−PtBu2)]− (1), [(pTol3P)2Pt(η2- P=PtBu2)] (2), and [(dppe)Pt(η2-P=PtBu2)] (3) toward dihaloalkanes and methyl iodide were investigated. The reactions of the anionic tungsten complex (1) with stochiometric Br(CH2)nBr (n = 3, 4, 6) led to the formation of neutral complexes with a tBu2PP(CH2)3Br ligand or neutral dinuclear complexes with unusual tetradentate...
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NOx Photooxidation over Different Noble Metals Modified TiO2
PublicationWe compared the activity enhancement effect of noble metal deposited on TiO2 in photocatalytic nitrogen oxides oxidation. Titanium dioxide was decorated with Ag, Au, Pt or Pd in the sol-gel process. Synthesized catalysts were characterized by X-ray diffraction (XRD), Brunauer–Emmett–Teller measurement (BET), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM) and energy dispersive X-ray analysis (EDX)....
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Pożywki stosowane do oznaczania bakterii powodujących biokorozję metali
PublicationW rozdziale podano skład pożywek stosowanych do oznaczania mikroorganizmów powodujących biokorozję
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Distribution of heavy metals in vegetation of constructed wetlands in agricultural catchment
PublicationW artykule przedstawiono wyniki pomiarów zawartości wybranych metali ciężkiech w nadziemnych i podziemnych częściach trzech gatunków roślin hydrofitowych zasiedlających ekosystem oczyszczalni hydrofitowej w Bielkowie k. Gdańska.
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Planläppen mit Schleif-Metall Läppscheibe von flachen Oberflächen.
PublicationPrzedstawiono wyniki badań docierania powierzchni płaskich narzędziami ścierno-metalowymi. Analizowano wpływ warunków obróbki na wydajność i jakość powierzchni elementów ceramicznych tlenkowych.
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O-substituted tetrahydroxamate derivatives of p-tert-butylcalix[4]arene as receptors for transition and heavy metal cations
PublicationTetrasubstituted O-hydroxamate derivatives of p-tert-butylcalix[4]arene were applied as active materials in ion-selective membrane electrodes and were tested towards Pb-selectivity. The electrodes gave near-Nernstian characteristics for Pb2+ cations. The selectivity coefficients were determined. The influence of plasticizer on the electrode behaviour was studied. The dependence of the chemical structure on selectivity coefficients...
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Influence of vacuum sublimation deposited metal layer thickness on metrological parameters of the amperometric gas sensor with Nafion membrane
PublicationThe paper presents the results of investigation on an influence of vacuum sublimation deposited platinum layer thickness on the signal, sensitivity and response time of a prototype of sulphur dioxide sensor with Nafion membrane. The working electrode was made by vacuum sublimation deposition of platinum on a surface of Nafion membrane. Pt layers deposited changed an initial structure of Nafion membrane and that phenomenon was utilized...
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Application of 3D digital image correlation for development and validation of FEM model of self-supporting metal plates structures
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Correlation between destruction of the metal surface caused by pitting corrosion and intensity of the observed electrochemical noise (Invited Paper)
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Volumes of N,N-dimethylacetamide solvated metal cations. Variation within the manganese(II) to zinc(II) series
PublicationDensities and apparent molar volumes for Mn(ClO4)2,Co(ClO4)2 , Ni(ClO4)2,Cu(ClO4)2 , and Zn(ClO4)2 in N, N -dimethylacetamide (DMA) solutions at T = 298.15 K are reported. Densities and apparent molar volumes of tetrabutylammonium tetraphenylborate...
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Broad-Range Spectral Analysis for Chiral Metal Coordination Compounds: (Chiro)optical Superspectrum of Cobalt(II) Complexes
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Silicon polypodands: powerful metal cation complexing agents and solid–liquid phase-transfer catalysts of new generation
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Study on the effect of the metal–support (Fe-MgO and Pt-MgO) interaction in alcohol-CVD synthesis of carbon nanotubes
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Study of the selection mechanism of heavy metal (Pb 2+, Cu 2+, Ni 2+ and Cd2+) adsorption on clinoptilite
PublicationBadano proces adsorpcji jonów metali ciężkich (w warunkach statycznych) z wodnych roztworów jednoskładnikowych i wieloskładnikowych na klinoptylolicie zarówno surowym jak i po wstępnej obróbce. Proces sorpcji ma charakter procesu jonowymiennego i składa sie z trzech etapów:- adsorpcji na powierzchni mikokryształów,- inwersji,- adsorpcji wewnątrz mikrokryształów.Proces sorpcji może być dobrze opisany zarówno za pomocą modelu Frendlicha...
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Nitrogen‐Doped Porous Graphene‐Based Aerogels toward Efficient Heavy Metal Ion Adsorption and Supercapacitor Applications
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The importance of evaluating metal exposure and predicting human health risks in urban–periurban environments influenced by emerging industry
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Estimation, optimization and analysis based investigation of the energy consumption in machinability of ceramic-based metal matrix composite materials
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Palladium versus Platinum: The Metal in the Catalytic Center of a Molecular Photocatalyst Determines the Mechanism of the Hydrogen Production with Visible Light
PublicationTo develop highly efficient molecular photocatalysts for visible light-driven hydrogen production, a thorough understanding of the photophysical and chemical processes in the photocatalyst is of vital importance. In this context, in situ X-ray absorption spectroscopic (XAS) investigations show that the nature of the catalytically active metal center in a (N^N)MCl2 (M=Pd or Pt) coordination sphere has a significant impact on the...
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Solvation of alkaline earth metal ions in N,N-dimethylformamide and N,N-dimethylacetamide – A volumetric and acoustic study
PublicationDensities and sound velocities at temperatures (298.15, 303.15, 308.15, 313.15 and 318.15) K of magnesium(II), calcium(II) and strontium(II) rifluoromethanesulfonates (triflates), as well as barium(II) perchloratein N,N-dimethylformamide (dmf) and N,N-dimethylacetamide (dma) have been measured over the composition range studied. From these results, apparent molar volumes and apparent molar isentropic compressibilities at infinite...
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Determination of time dependence of coated metal electrical and electrochemical parameters during exposure using principal component analysis
PublicationThe use of the principal component analysis (PCA) permits the complex and quantitative analysis of the time dependence of electrical and electrochemical parameters of coated metal obtained by fitting impedance data. So far, changes in electrical and electrochemical parameters during exposure were analyzed independently. In this way, some of the information contained in the relationship between changes in parameters over time are...
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Noble metal modified TiO2 microspheres: Surface properties and photocatalytic activity under UV-vis and visible light
PublicationComposite photocatalysts that consist of TiO2and noble metal nanostructures have been considered tobe the promising and pivotal material for accessible enhancement of the efficiency in the photocatalyticprocess carried out in the aqueous and gas phases. In this work we fabricated porous TiO2microspheresthrough a hydrothermal process followed by photochemical reduction of noble metal nanoparticles atthe TiO2surface. The morphology...
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Protective Effect of Aronia Melanocarpa Polyphenols on Cadmium Accumulation in the Body: A Study in a Rat Model of Human Exposure to this Metal
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Correlational nutritional relationships and interactions between expansive holoparasite Orobanche laxissima and woody hosts on metal-rich soils
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Effects of simulated pressure of wooden, plastic, and metal materials on the thermal insulation of cold-protective gloves of various designs
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A pilot study to assess an in-process inspection method for small diameter holes produced by Direct Metal Laser Sintering
PublicationPurpose The purpose of this research is to evaluate the geometric quality of small diameter holes in parts printed by DMLS technology. An in-process optical inspection method is proposed and assessed during a pilot study. The influence of the theoretical hole diameter assumed in a CAD system and the sample thickness (hole length) on the hole clearance was analysed. Design/methodology/approach The samples made of two different...
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Determination of metal content in sewage sludge and sewage sludge ash to find opportunities to use them in the construction industry
PublicationSewage sludge management is becoming an increasing problem in developed and developing countries. Due to their physicochemical properties (mainly high content of heavy metals) a safe method of utilization is sought. Considering environmental protection, energy recycling, reduction in use of the raw materials and the possibility of immobilization hazardous substances, the use of ashes in building materials becomes a very good way...
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Polymeric metal‐containing ionic liquid sorbent coating for the determination of amines using headspace solid‐phase microextraction
PublicationThis study describes the design, synthesis, and application of polymeric ionic liquid sorbent coatings featuring nickel metal centers for the determination of volatile and semivolatile amines from water samples using headspace solidphase microextraction. The examined polymeric ionic liquid sorbent coatings were composed of two ionic liquid monomers (tetra(3-vinylimidazolium)nickel bis[(trifluoromethyl)sulfonyl]imide [Ni2+(VIM)4]...
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Metal (Mo, W, Ti) Carbide Catalysts: Synthesis and Application as Alternative Catalysts for Dry Reforming of Hydrocarbons—A Review
PublicationDry reforming of hydrocarbons (DRH) is a pro-environmental method for syngas production. It owes its pro-environmental character to the use of carbon dioxide, which is one of the main greenhouse gases. Currently used nickel catalysts on oxide supports suffer from rapid deactivation due to sintering of active metal particles or the deposition of carbon deposits blocking the flow of gases through the reaction tube. In this view,...
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Metal ion directed template synthesis using 2-acetyl-1,3-indandione and ethylenediamine: steric and electronic restrictions
PublicationA template synthesis using 2-acetyl-1,3-indandione and ethylenediamine results in formation of octahedral Ni complex, whose crystal structure has been resolved using single crystal X-ray diffraction. The structure indicates that only exocyclic enolic oxygen atom of the triketone takes part in the condensation with ethylenediamine.
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The effects of urban vehicle traffic on heavy metal contamination in road sweeping waste and bottom sediments of retention tanks
PublicationDiffuse pollution formed during a surface runoff on paved surfaces is a source of heavy metals (HMs) of various origin. This research study indicates the connection between bottom sediments of retention tanks located on urban streams and road sweeping wastes (RSW) that migrate during surface runoff to the stormwater drainage systems with discharge to the retention tanks. Moreover, we test the primary sources of HMs in RSW by analysing...
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Fast-SEC coupled to ICP-MS for selected metal determination and its stability over time in polish wine
PublicationMetal ions contribute to the wine browning (as reaction catalysts), turbidity (in complexes), and astringency (due to inter- action with tannins). Being aware that bioavailability and metabolism of metal ions in the human body are strictly related with their concentration and the form they occur it is important to monitor not only the total content of metals but also their speciation. Thus, we can obtain more information about...
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Zr‐Based Metal‐Organic Framework UiO‐66/Ultem® 1000 Membranes for Effective CO2/H2 Separation
PublicationMixed-matrix membranes (MMMs) using UiO-66 nanofillers as dispersing inorganic phase and polyetherimide (PEI) as continuous polymeric matrix were synthesized. Different UiO-66 loadings of 10, 20, and 30 wt % were applied. The morphology and UiO-66 dispersion over the prepared MMMs were examined. Gas separation measurements were performed for H2/CO2 gas mixture to evaluate the influence of UiO-66 on the separation yield of resulting...