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Wyniki wyszukiwania dla: SOIL-CONCRETE INTERFACE
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Toxicity Assessment by Microtox® in Sediments, Pore Waters and Sediment Saline Elutriates in the Gulf of Gdansk (Baltic Sea)
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MOCS-based optimum design of TMD and FTMD for tall buildings under near-field earthquakes including SSI effects
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The Impact of Dredging Deep Pits on Organic Matter Decomposition in Sediments
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Enzymatic Activity and Content of Polycyclic Aromatic Hydrocarbons (PAHs) in Soils under Low-Stack Emission in Lublin
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Zinc Removal from the Aqueous Solutions by the Chemically Modified Biosorbents
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Stimulation of Heavy Metal Adsorption Process by Using a Strong Magnetic Field
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Pesticides in precipitation from an urban region in Poland (Gdańsk-Sopot-Gdynia Tricity) between 1998 and 2000.
PublikacjaOznaczano wybrane pestycydy chloro-, azoto- i fosforoorganiczne w próbkach opadów zbieranych w 10 punktach w rejonie Gdańska w latach 1998-2000. Do najczęściej wykrywanych pestycydów należy zaliczyć symazynę, atrazynę, propazynę, fenitrotion, chlorofenwinfos, p,p`-DDT, o,p`-DDE, o,p`-DDD. Największe stężenia występowały w okresach aplikacji preparatów. Znaczący wpływ na stężenie pestycydów miała wielkość obszarów zielonych...
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Visible Light–Driven Advanced Oxidation Processes to Remove Emerging Contaminants from Water and Wastewater: a Review
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Investigating the Interaction Between Streptomyces sp. and Titania/Silica Nanospheres
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Adsorption Kinetics of Acid Dye Acid Red 88 onto Magnetic Multi‐Walled Carbon Nanotubes‐Fe3C Nanocomposite
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Screening of Microorganisms for Biodegradation of Simazine Pollution (Obsolete Pesticide Azotop 50 WP)
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Effects of Xanthan Gum Biopolymer on the Permeability, Odometer, Unconfined Compressive and Triaxial Shear Behavior of a Sand
PublikacjaBiopolymers, which are microbially induced polymers, can be used as an alternative material to improve engineering performance of soils. In this paper, a laboratory study of 0.075-1.0 mm size sand and biopolymer (i.e., xanthan gum) mixtures with various mix ratios (0%, 0.5%, 1.0%, and 1.5%) was performed. The materials, specimen preparation, and test methods are described, as are the results of a suite of permeability, odometer, unconfined...
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Application of Nanomaterials for Cadmium Adsorption for Sustainable Treatment of Wastewater: a Review
PublikacjaMany heavy metals, particularly cadmium, are detrimental to both people and the environment when present in large quantities. In wastewater treatment plants, several conventional approaches are employed for cadmium abatement to restore the ecosystem, food supplies, and health of people and animals. Ion exchange, coagulation, membrane filtration, and chemical precipitation are a few examples of ways for removing heavy metals from...
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Extended Newmark method to assess stability of slope under bidirectional seismic loading
PublikacjaThe paper concerns the dynamic behavior of a simple slope model subjected to simultaneous horizontal and vertical excitations. The proposed method is based on Newmark’s sliding block concept, however, four new features are introduced. The most important assumption is that the normal component of dynamic excitations affects the resisting force both before and after the initiation of the relative slope motion, making it time-dependent....
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Progressing Pollutant Elution from Snowpack and Evolution of its Physicochemical Properties During Melting Period— a Case Study From the Sudetes, Poland
PublikacjaMain aim of the work assumed recognition of physicochemical changes in snowpack occurring during the melting period. Properties of snow cover had been identified at two sites in Western Sudetes mountains (860 and 1228 m asl) in SW Poland since the end of January, and monitored until the disappearance of snow in late Spring. Snow pit measurements and sample collection at both sites were made followed by chemical analyses with the...
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Investigation of thin perovskite layers between cathode and doped ceria used as buffer layer in solid oxide fuel cells
PublikacjaIn this paper, thin perovskite layers between cathode material of solid oxide fuel cells and gadolinia-doped ceria buffer layer are investigated. Thin layers made of LaNi0.6Fe0.4O3-δ (LNF), La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF), or SrTi0.65Fe0.35O3-δ (STF) were symmetrically deposited by spin coating method from metallo-organic polymer precursors on a Ce0.8Gd0.2O2-δ (CGO) substrate. Porous and about 40-μm-thick LNF cathodes were deposited...
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Analytical model with non-adiabatic effects for pressure drop and heat transfer during boiling and condensation flows in conventional channels and minichannels
PublikacjaIn the paper a method developed earlier by authors is applied to calculations of pressure drop and heat transfer coefficient for boiling flow and condensation flow with account of non- adiabatic effects for some recent data collected from literature. The first effect, the modification of interface shear stresses in annular flow pattern is considered through incorporation of the so called "blowing parameter". The mechanism of...
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Room temperature synthesis of water-dispersible Ln 3+ :CeF 3 (Ln = Nd, Tb) nanoparticles with different morphology as bimodal probes for fluorescence and CT imaging
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Ionic liquids for nano- and microstructures preparation. Part 1: Properties and multifunctional role
PublikacjaIonic liquids (ILs) are a broad group of organic salts of varying structure and properties, used in energy conversion and storage, chemical analysis, separation processes, as well as in the preparation of particles in nano- and microscale. In material engineering, ionic liquids are applied to synthesize mainly metal nanoparticles and 3D semiconductor microparticles. They could generally serve as a structuring agent or as a reaction...
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Ionic liquids for nano- and microstructures preparation. Part 2: Application in synthesis
PublikacjaIonic liquids (ILs) are widely applied to prepare metal nanoparticles and 3D semiconductor microparticles. Generally, they serve as a structuring agent or reaction medium (solvent), however it was also demonstrated that ILs can also play a role of a co-solvent, metal precursor, reducing as well as surface modifying agent. The crucial role and possible types of interactions between ILs and growing particles have been presented in...
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Thermodynamics of micellization of imidazolium ionic liquids in aqueous solutions
PublikacjaPodobieństwo pomiędzy strukturami niektórych cieczy jonowych, a surfaktamtami jonowymi wskazuje na możliwość wykazywania, przez te związki, tendencji do agregacji i adsorpcji na powierzchniach międzyfazowych. Mierząc w różnych temperaturach przewodnictwo elektryczne w funkcji stężenia oznaczono temperaturę Kraffta i zależność temperaturową krytycznego stężenia micelizacji (CMC) dla czterech, różniących się długościami łańcucha,...
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Modeling the Influence of Salts on the Critical Micelle Concentration of Ionic Surfactants
PublikacjaWe show for the first time that a phenomenological, augmented volume-based thermodynamics (aVBT) model is capable to predict the critical micelle concentrations of ionic surfactants, including ionic liquids, with added salts. The model also adjusts for the type of salt added by including its molecular volume, which might form a connection to the Hofmeister effect. The other physico-chemically relevant quantities included in the...
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Influence of the Hofmeister anions on self-organization of 1-decyl-3-methylimidazolium chloride in aqueous solutions
PublikacjaW pracy określono wpływ anionów z szeregu Hofmeistera na agregację micelarną wodnych roztworów chlorku 1-decylo-3-metyloimidazoliowego. Pod uwagę wzięto dwa czynniki - rodzaj anionu oraz siłę jonową. Wykazano, że dodatek zastosowanych soli skutkuje obniżaniem krytycznego stężenia micelizacji związku z siłą zgodną z trendem opisanym szeregiem Hofmeistera. Dodatek elektrolitu powoduje obniżenie wartości entalpii micelizacji i przejście...
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Recent progress in the engineering of multifunctional colloidal nanoparticles for enhanced photodynamic therapy and bioimaging
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Polymer-free cubosomes for simultaneous bioimaging and photodynamic action of photosensitizers in melanoma skin cancer cells
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On the Anomalous Behavior of Alcohol Adsorption on Polymer-Coated Siliceous Materials
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Effects of surface nonuniformity and molecular association on mechanism of butanol adsorption from solution
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Bonding of doxorubicin to nanosilica and human serum albumin in various media
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Interfacial behavior of polar, weakly polar, and nonpolar compounds bound to activated carbons
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Nitrogen-doped porous carbon embedded with cobalt nanoparticles for excellent oxygen reduction reaction
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A facile approach to prepare porous cup-stacked carbon nanotube with high performance in adsorption of methylene blue
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Influence of dipalmitoylphosphatidylcholine (or dioleoylphosphatidylcholine) and phospholipase A2 enzyme on the properties of emulsions
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What affects the biocompatibility of polymers?
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Mechanism of nitromethane liquid membrane oscillator containing sodium oleate
PublikacjaBadano osylacyjne zachowanie oscylatora z anionowym surfaktantem na poziomie molekularnym. Zastosowano przybliżenie oparte na zasadach kinektyki chemicznej. Membranę ciekłą stanowił nitrometan z 2,2' bipirydyną. Faza wodna domowa zawierała oleinian sodu i butanol, a faza wodna akceptora chlorek sodu. Ustalono, że oscylacje zachodzą na granicy fazy akceptorowej i membrany ciekłej. Zaproponowano 3-etapowy mechanizm oscylacji i potwierdzono...
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Mangiferin: A comprehensive review on its extraction, purification and uses in food systems
PublikacjaWith the target of fabricating healthier products, food manufacturing companies look for natural-based nutraceuticals that can potentially improve the physicochemical properties of food systems while being nutritive to the consumer and providing additional health benefits (biological activities). In this regard, Mangiferin joins all these requirements as a potential nutraceutical, which is typically contained in Mangifera indica...
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Contribution to the mechanism of liquid membrane oscillators involving cationic surfactant.
PublikacjaIt is shown that liquid membrane oscillators with cationic surfactants havemore complex oscillation patterns than observed previously. The actual details of the oscillations depend strongly on the nature of the membrane material, dislosing even the presence of parallel molecular events. It appearsthat sampling topology also has a great influence on the observed oscillato-ry behaviour. Variation of oscillation patterns with...
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Rhamnolipid CMC Prediction
PublikacjaRelationships between the purity, pH, hydrophobicity (log Kow) of the carbon substrate, and the critical micelle concentration (CMC) of rhamnolipid type biosurfactants (RL) were investigated using a quantitative structure–property relationship (QSPR) approach and are presented here for the first time. Measured and literature CMC values of 97 RLs, representing biosurfactants at different stages of purification, were considered....
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Equilibrium and kinetic studies on acid dye Acid Red 88 adsorption by magnetic ZnFe2O4 spinel ferrite nanoparticles
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Intumescent flame retardants inspired template-assistant synthesis of N/P dual-doped three-dimensional porous carbons for high-performance supercapacitors
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Facile synthesis N-doped hollow carbon spheres from spherical solid silica
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Waste-based nanoarchitectonics with face masks as valuable starting material for high-performance supercapacitors
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Adsorption of anionic azo-dyes from aqueous solutions onto graphene oxide: Equilibrium, kinetic and thermodynamic studies
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Removal of anionic dyes using magnetic Fe@graphite core-shell nanocomposite as an adsorbent from aqueous solutions
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Kinetics of adsorption of hydrocarbon chloro-derivatives from seven-component aqueous solution onto a thin layer of DTO-activated carbon
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Adsorption from aqueous solutions of chlorinated organic compounds onto activated carbons
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Fixed-bed adsorption of chlorinated hydrocarbons from multicomponent aqueous solution onto activated carbon: Equilibrium column model
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Desorption of chloroorganic compounds from a bed of activated carbon
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Study of the selection mechanism of heavy metal (Pb 2+, Cu 2+, Ni 2+ and Cd2+) adsorption on clinoptilite
PublikacjaBadano 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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Protection and viability of fruit seeds oils by nanostructured lipid carrier (NLC) nanosuspensions
PublikacjaIn this paper, we focused on the development of nanostructured lipid carriers (NLCs) for dermal application. The NLC matrix was designed as a protective reservoir of biological active compounds that naturally occur in domestic fruit seed oils. Over the years, emulsions, as a popular physicochemical form of personal care products, were refined in order to obtain the best possible penetration into the skin of any bioactive compound...
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The role of bile salts in digestion
PublikacjaBile salts (BS) are bio-surfactants present in the gastrointestinal tract (GIT) that play a crucial role in the digestion and absorption of nutrients. The importance of BS for controlled release and transport of lipid soluble nutrients and drugs has recently stimulated scientific interest in these physiological compounds. BS are so-called facial amphiphiles showing a molecular structure that is very distinct from classical surfactants....