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Search results for: STARCH NANOPARTICLES
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The influence of stabilizers on the production of gold nanoparticles by direct current atmospheric pressure glow microdischarge generated in contact with liquid flowing cathode
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Zinc Oxide Nanoparticles Impair the Integrity of Human Umbilical Vein Endothelial Cell Monolayer <I>In</I> <I>Vitro</I>
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Ameliorative Role of Cerium Oxide Nanoparticles Against Fipronil Impact on Brain Function, Oxidative Stress, and Apoptotic Cascades in Albino Rats
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Antimicrobial potential of commercial silver nanoparticles and the characterization of their physical properties toward probiotic bacteria isolated from fermented milk products
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Synergic Effect of Naphthylated Carbon Nanotubes and Gold Nanoparticles on Catalytic Performance of Hybrid Films Containing Bilirubin Oxidase for the Dioxygen Reduction
PublicationTo improve the direct electron transfer from a multicopper oxidase MvBOd to the glassy carbon electrode surface the naphthylated multiwall carbon nanotubes (Napht-MWCNTs) are ombined with gold nanoparticles (AuNPs) to form a conductive network at the electrode and to increase its working surface. Such approach allowed to eliminate the necessity of employing mediators to reach elevated current values. The enzyme stability was improved...
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Monometallic nanoparticles decorated and rare earth ions doped KTaO3/K2Ta2O6 photocatalysts with enhanced pollutant decomposition and improved H2 generation
PublicationNew, monometallic nanoparticles (MNPs) decorated surface and rare earth (RE) ions doped lattice of perovskite-type (KTaO3)/pyrochlore-type (K2Ta2O6) photocatalysts were successfully prepared by facile hydrothermal incorporation of RE ions into KTaO3/K2Ta2O6 lattices followed by photodeposition of MNPs. The impact of noble metal type (MNPs = Au, Pt, Rh) and rare earth dopant type (RE = Er, Pr) on the physicochemical properties correlated...
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Visible light activity of pulsed layer deposited BiVO4/MnO2 films decorated with gold nanoparticles: The evidence for hydroxyl radicals formation
PublicationThin films containing BiVO4 and MnO2 deposited on FTO and modified by Au nanoparticles were studied towards their photoelectrochemical and photocatalytical activities in an aqueous electrolyte. Electrodes were prepared by the pulsed laser deposition (PLD) method. The surfactant-free ablation process was used for preparation of the gold nanoparticles (GNP) water suspension. Obtained layers of varied thicknesses (27–115 nm) were...
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Cathodic activation of synthesized highly defective monoclinic hydroxyl‐functionalized ZrO2 nanoparticles for efficient electrochemical production of hydrogen in alkaline media
PublicationThe high electrochemical stability of Zirconia (ZrO2) at high potentials strongly suggested it as an alternative to carbon supports, which experience reduced efficiency due to some corrosion problems particularly during prolonged electrocatalysis activity. However, the use of ZrO2 was limited by its low electrical conductivity and surface area. In this work, we developed a methodology for synthesizing monoclinic ZrO2 NPs with increased...
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Electrocatalytic oxidation of methanol, ethylene glycol and glycerine in alkaline media on TiO2 nanotubes decorated with AuCu nanoparticles for an application in fuel cells
PublicationIn this work, we present the catalytic and photocatalytic activity of AuCu nanostructures obtained on TiO2 nanotubes toward methanol, ethylene glycol and glycerine oxidation. The electrode material is prepared by anodization of Ti foil, thin AuCu layer sputtering and rapid thermal treatment under argon atmosphere. Scanning electron microscopy images confirmed the presence of ordered tubular architecture of TiO2 as well as nanoparticles...
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The reliability of tree and star networks
PublicationThis paper investigated the reliability of tree and star networks. Following measures of network reliability are assumed: the expected number of nodes, that can communicate with the central node; the expected number of node pairs, that are connected by a path through the central node; the expected number of node pairs communicating.
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Test loadings of arch bridges
PublicationIn Poland an appreciable developement of bridge building can be seen in recent years. Arch structures are more and more common, because of the original geometrical and aesthetical form, aside with explicit structural system. Paper concerns the applied computational conceptions and researches on an example of two arch bridges. The goal of the studies is to check the correctness of the real construction work and design assumptions,...
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The reliability of tree and star networks.
PublicationOne of the important parameters characterizing the quality of computer networks is the network's reliability with respect to failures of the communication links and nodes. This chapter investigated the reliability of tree and star networks. The tree and star topology is used in centralized computer networks. In centralized computer networks all communication must take place through some central computer. Following measures of network...
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Correction to “Emerging Anticancer Activity of Candidal Glucosamine-6-Phosphate Synthase Inhibitors upon Nanoparticle-Mediated Delivery”
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Cationic distribution of nickel doped NixCoX-1Fe2O4 nanparticles prepared by hydrothermal approach: Effect of doping on dielectric properties
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Removal of lead ions from wastewater using lanthanum sulfide nanoparticle decorated over magnetic graphene oxide
PublicationIn this study, the new lanthanum sulfide nanoparticle (La2S3) was synthesized and incorporated onto magnetic graphene oxide (MGO) sheets surface to produce potential adsorbent (MGO@LaS) for efficient removal of lead ions (Pb2+) from wastewater. The synthesized MGO@LaS adsorbent was characterized using Fourier transform infrared spectroscopy, field emission scanning electron microscopy and energy-dispersive X-ray spectroscopy. The...
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Fluctuation enhanced gas sensing with WO3-based nanoparticle gas sensors modulated by UV light at selected wavelengths
PublicationThe sensitivity and selectivity of WO3-based gas sensors can be enhanced by UV-irradiation-induced modulation, especially if different wavelengths are employed. We used fluctuation-enhanced gas sensing, based on measurements of resistance fluctuations in the gas sensor, to study the effects of such modulation on the noise intensity for ambient atmospheres of synthetic air without and with additions of small amounts of ethanol,...
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Człowiek i miasto. Gdańszczanie między starą a nową tożsamością
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On efficiency of layer 2 of the radio interface protocol stack in UMTS
PublicationCelem pracy jest szczegółowa analiza funkcjonowania warstwy łącza danych w podsystemie dostępu radiowego UTRAN systemu UMTS i na tej podstawie przedstawienie szeregu zmian i usprawnień oraz wskazówek odnośnie konfiguracji protokołów, jakie należy w tej warstwie zastosować aby zmaksymalizować jej wydajność głównie pod kątem oferowanej przepływności, wprowadzanych opóźnień oraz wsparcia priorytetów przesyłanego ruchu. Teza pracy...
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Pomiarowa analiza właściwości wibroakustycznych tarcz łozyskowych silników elektrycznych
PublicationOmówiono procedury badania akustycznych charakterystyk kierunkowych silników, wibracyjnej i akustycznej analizy modalnej tarczy oraz analizy eksploatacyjnych form odkształceń. Sformułowano sposób identyfikacji częstotliwości składowych dominujących oraz zasady klasyfikacji wibracyjnych form odkształceń. Określono postaci drgań własnych oraz ich związek z rozkładem ciśnienia akustycznego na tarczą. Przedstawiono wyniki analizy eksploatacyjnych...
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Determination of ability of hydrotronic systems to start in low ambient temperatures
PublicationPrzedstawiono wyniki badań symulacji komputerowej zespołów układów hydrotronicznych w warunkach szoku termicznego. Pokazano metodę określania zdatności hydrotronicznych zespołów i układów podczas rozruchu w warunkach szoku termicznego.
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Smooth start for strategry game development supported by XNA framework
PublicationTo attract young and casual game developers, Microsoft created a set of libraries oriented towards easier game development and end-product management. The aim of XNA Framework is to provide a unified software development environment for creating games for both PC's and dedicated platforms like XBOX consoles or mobile phones capable of 3D acceleration. The use of modern, object oriented languages available for the .NET platform...
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Cold Start Emissions Investigation at Different Ambient Temperature Conditions
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SPARC, a Novel Regulator of Vascular Cell Function in Pulmonary Hypertension
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Drgania tarcz łożyskowych silników asynchronicznych wymuszane siłami elektromagnetycznymi
PublicationNa podstawie wyników badań akustycznych zwrócono uwagę na emitowanie hałasu przez tarcze łożyskowe silników i elektrycznych. Sklasyfikowano mechanizmy generowania drgań i hałasu w maszynach asynchronicznych, uwypuklając rolę wymuszeń elektromagnetycznych. Omówiono badania postaci drgań eksploatacyjnych kadłuba i tarczy łożyskowych metodą RORO, MORO i za pomocą lasera skanującego. Poddano analizie związki przyczynowo-skutkowe postaci...
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Zarysowanie i nośność przestrzennego układu tarcz zbrojonych ortogonalnie
PublicationW referacie przedstawiono wyniki badania eksperymentalnego przestrzennego układu tarcz z tarczą wspornikową obciążoną po wysokości i tarczą poprzeczną ją wspierającą. Wyniki badania w zakresie zarysowania i nośności przeanalizowano pod kątem udziału betonu w pracy układu tarczowego. Zweryfikowano przydatność wytrzymałości betonu na przecinanie w ocenie nośności.
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Komunikacja w układach przekształtnikowych z procesorem sygnałowym SHARC
PublicationPrzedstawiono program pulpitu operatora do sterowania napędami elektrycznymi z procesorem sygnałowym SHARC.
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Business angels jako alternatywne źródło finansowania start-upów
PublicationPodmioty gospodarcze jako element każdego modelu gospodarki są bardzo istotne z punktu widzenia funkcjonowania każdego systemu ekonomicznego na świecie. Stan gospodarki jest bowiem silnie zależny od dynamicznego rozwoju sektora przedsiębiorczości. Zależność ta zachodzi na wszystkich etapach rozwoju gospodarczego, może ona jednak przybierać różne nasilenie i charakter. W Polsce, podobnie jak na całym świecie, powstaje wiele nowych...
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Drgania tarcz łożyskowych silników asynchronicznych wymuszane siłami elektromagnetycznymi
PublicationW silnikach dużej mocy przyczyny drgań i hałasu tarcz łożyskowych pochodzą głównie od pracy łożysk. W widmach drgań tarcz silników asynchronicznych małej mocy występują dominanty o częstotliwościach niezwiązanych w żaden sposób z pracą łożysk tocznych. Celem niniejszej rozprawy jest określenie mechanizmów wiążących drgania tarcz łożyskowych z wymuszeniami elektromagnetycznymi stojana. Przyjętymi metodami realizacji celu rozprawy...
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Cihannüma: Tarih ve Coğrafya Araştırmaları Dergisi
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Andrzej Klimczuk, „Kapitał społeczny ludzi starych na przykładzie mieszkańców miasta Białystok”, Wydawnictwo Wiedza i Edukacja, Lublin 2012
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Application of biocompatible and ultrastable superparamagnetic iron(iii) oxide nanoparticles doped with magnesium for efficient magnetic fluid hyperthermia in lung cancer cells
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Evaluation of floor-wise pollution status and deposition behavior of potentially toxic elements and nanoparticles in air conditioner dust during urbanistic development
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Biochar-induced immobilization and transformation of silver-nanoparticles affect growth, intracellular-radicles generation and nutrients assimilation by reducing oxidative stress in maize
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Effects of biochar on uptake, acquisition and translocation of silver nanoparticles in rice (Oryza sativa L.) in relation to growth, photosynthetic traits and nutrients displacement
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Magnetic Molecularly Imprinted Polymer Nanoparticles for Selective Extraction of Copper from Aqueous Solutions Prior to Its Flame Atomic Absorption Determination
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Magnetic molecularly imprinted polymer nanoparticles for selective extraction of copper from aqueous solutions prior to its flame atomic absorption determination
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Application of PSO-artificial neural network and response surface methodology for removal of methylene blue using silver nanoparticles from water samples
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Gamma irradiation mediated production improvement of some myco-fabricated nanoparticles and exploring their wound healing, anti-inflammatory and acetylcholinesterase inhibitory potentials
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Comparison of the characteristics of gold nanoparticles synthesized using aqueous plant extracts and natural plant essential oils of Eucalyptus globulus and Rosmarinus officinalis
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Size-controlled synthesis of gold nanoparticles by a novel atmospheric pressure glow discharge system with a metallic pin electrode and a flowing liquid electrode
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Preparation and characterization of gold nanoparticles prepared with aqueous extracts of Lamiaceae plants and the effect of follow-up treatment with atmospheric pressure glow microdischarge
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Atmospheric Pressure Plasma-Mediated Synthesis of Platinum Nanoparticles Stabilized by Poly(vinylpyrrolidone) with Application in Heat Management Systems for Internal Combustion Chambers
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The Effect of Zirconium Dioxide (ZrO2) Nanoparticles Addition on the Mechanical Parameters of Polymethyl Methacrylate (PMMA): A Systematic Review and Meta-Analysis of Experimental Studies
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Effective SERS materials by loading Ag nanoparticles into poly(acrylic acid-stat-acrylamide)-block-polystyrene nano-objects prepared by PISA
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Corncob-supported calcium oxide nanoparticles from hen eggshells for cadmium (Cd-II) removal from aqueous solutions; Synthesis and characterization
PublicationThis study investigated the efficient removal of cadmium ions from aqueous solutions using calcium oxide nanoparticles (CaO NPs) synthesized from waste hen eggshells using a Sol-gel method and supported on corncob bio-adsorbent. The synthesized CaO NPs were characterized using FT-IR, XRD, specific surface area, and TGA. Batch adsorption experiments were conducted to examine the influence of process parameters such as adsorbent...
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Synthesis and structural properties of (Y, Sr)(Ti, Fe, Nb)O3−δ perovskite nanoparticles fabricated by modified polymer precursor method
PublicationThe yttrium, iron and niobium doped-SrTiO3 powders have been successfully fabricated by a modified low–temperature synthesis method from a polymer complex. The usage of strontium hydroxide precursor instead of conventional strontium nitrate or strontium carbonate provides to the possibility of significant decrease of annealing temperature. It allows to prepare a material with sphere-shape grains of nanometric size (15–70 nm). The...
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Synthesis of thiol derivatives of azobenzocrown ethers. The preliminary studies on recognition of alkali metal ions by gold nanoparticles functionalized with azobenzocrown and lipoic acid
PublicationThe article presents the synthesis of novel 13- and 16-membered azobenzocrown derivatives with peripheral thiol moieties and preliminary studies assessing their possible application in plasmonic sensors based on gold nanoparticles. The effect of the length of the chain connecting the macrocycle with the thiol group and the effect of the presence of the additional functional compound,...
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Enhanced photocatalytic, electrochemical and photoelectrochemical properties of TiO2 nanotubes arrays modified with Cu, AgCu and Bi nanoparticles obtained via radiolytic reduction
PublicationTiO2 nanotubes arrays (NTs), obtained via electrochemical anodization of Ti foil, were modified with monometallic (Cu, Bi) and bimetallic (AgCu) nanoparticles. Different amounts of metals’ precursors were deposited on the surface of NTs by the spin-coating technique, and the reduction of metals was performed via gamma radiolysis. Surface modification of titania was studied by EDS and XPS analysis. The results show that AgCu nanoparticles...
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The effect of imidazolium ionic liquid on the morphology of Pt nanoparticles deposited on the surface of SrTiO3 and photoactivity of Pt–SrTiO3 composite in the H2 generation reaction
PublicationPhotocatalytic water splitting has great potential in solar-hydrogen production as a low-cost and environmentally friendly method. Different unique techniques used to obtain photocatalysts with various modifications to improve H2 generation have been introduced. In the present work, SrTiO3 was successfully synthesized via the solvothermal method in the presence of ionic liquid (IL) - 1-butyl-3-methylimidazolium bromide ([BMIM][Br])...
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AN OVERVIEW OF HEAT TRANSFER ENHANCEMENT BASED UPON NANOPARTICLES INFLUENCED BY INDUCED MAGNETIC FIELD WITH SLIP CONDITION VIA FINITE ELEMENT STRATEGY
PublicationThe mathematical model of heat generation and dissipation during thermal energy transmission employing nanoparticles in a Newtonian medium is investigated. Dimensionless boundary layer equations with correlations for titanium dioxide, copper oxide, and aluminium oxide are solved by the finite element method. Parameters are varied to analyze their impact on the flow fields. Various numerical experiments are performed consecutively...