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Wyniki wyszukiwania dla: amorphous magnetic materials
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Materials science. Quantum particle approach. 2023.
Kursy OnlineQuantum ideas applied for particle systems and for chemical reactions.
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Structural Materials (Dezhou program 4+0)
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Improved cytotoxicity and preserved level of cell death induced in colon cancer cells by doxorubicin after its conjugation with iron-oxide magnetic nanoparticles
PublikacjaA promising strategy for overcoming the problem of limited efficacy in antitumor drug delivery and in drug release is the use of a nanoparticle-conjugated drug. Doxorubicin (Dox) anticancer chemotherapeutics has been widely studied in this respect, because of severe cardiotoxic side effects. Here, we investigated the cytotoxic effects, the uptake process, the changes in cell cycle progression and the cell death processes in the...
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Effect of Thermal Treatment at Inert Atmosphere on Structural and Magnetic Properties of Non-stoichiometric Zinc Ferrite Nanoparticles
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Magnetic hydrophobic deep eutectic solvents for orbital shaker-assisted dispersive liquid-liquid microextraction (MAGDES-OS-DLLME) - determination of nickel and copper in food and water samples by FAAS
PublikacjaIn this work, a cheap and widely applicable dispersive liquid-liquid microextraction (DLLME) method was developed for the extraction of Ni(II) and Cu(II) from water and food samples and analysis using flame atomic absorption spectrometry. DLLME was assisted by orbital shaker, while ferrofluid as an extractant was based on deep eutectic solvent (DES). This ferrofluid was made of hydrophobic DES (hDES), composed of lauric acid and...
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Magnetic-dipole-to-electric-quadrupole cross-susceptibilities for relativistic hydrogenlike atoms in some low-lying discrete energy eigenstates
PublikacjaIn this paper we present tabulated data for magnetic-dipole-to-electric-quadrupole cross-susceptibilities (χ_{M1→E2}) for Dirac one-electron atoms with a pointlike, spinless and motionless nucleus of charge Ze. Numerical values of this susceptibility for the hydrogen atom (Z = 1) and for hydrogenic ions with 2 \leqslant Z \leqslant 137 are computed from the general analytical formula, recently derived by us (Stefanska, 2016), valid...
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In-situ synthesis and characterization of biocompatible magnetic ginger nanofiber composites for copper (II) removal from water
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Polyrhodanine cobalt ferrite (PRHD@CoFe2O4) hybrid nanomaterials - Synthesis, structural, magnetic, cytotoxic and antibacterial properties
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The XRD diffraction patterns of as-prepared (La0.3Sr0.6Ce0.1)0.9Me0.1Ti0.9O3-δ (Me= Co, Fe, Ni) materials
Dane BadawczeThe (La0.3Sr0.6Ce0.1)0.9Me0.1Ti0.9O3-δ (Me= Co, Fe, Ni) materials were synthesized via the Pechini method. First, the reagents in the form of nitrates were weighed and dissolved in DI water. In another beaker, a stoichiometric amount of titanium (IV) butoxide (Ti(OBu)4) was mixed together with reagent-grade ethylene glycol (EG), and citric acid (CA)...
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The XRD diffraction patterns of as-prepared (La0.3Sr0.6Ce0.1)0.9Ni0.05Me0.05Ti0.9O3-δ (Me= Co, Fe, Cu) materials
Dane BadawczeThe ((La0.3Sr0.6Ce0.1)0.9Ni0.05Me0.05Ti0.9O3-δ (Me= Co, Fe, Cu) materials were synthesized via the Pechini method. First, the reagents in the form of nitrates were weighed and dissolved in DI water. In another beaker, a stoichiometric amount of titanium (IV) butoxide (Ti(OBu)4) was mixed together with reagent-grade ethylene glycol (EG), and citric acid...
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Magnetic-field-induced electric quadrupole moments for relativistic hydrogenlike atoms: Application of the Sturmian expansion of the generalized Dirac-Coulomb Green function
PublikacjaWe consider a Dirac one-electron atom placed in a weak, static, uniform magnetic field. We show that, to the first order in the strength of the external field, the only electric multipole moments, which are induced by the perturbation in the atom, are those of an even order. Using the Sturmian expansion of the generalized Dirac-Coulomb Green function we derive a closed-form expression for the electric quadrupole moment induced...
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Investigation on microstructure, mechanical, and tribological performance of Cu base hybrid composite materials
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A magnetic stir bar sorbent of metal organic frameworks, carbon foam decorated zinc oxide and cryogel to enrich and extract parabens and bisphenols from food samples
PublikacjaA porous composite magnetic stir bar adsorbent was fabricated for the extraction and enrichment of parabens and bisphenols from selected beverage samples. The adsorbent comprised a metal organic framework, carbon foam decorated zinc oxide and magnetic nanoparticles embedded in polyvinyl alcohol cryogel. The porous composite stir bar adsorbent could adsorb parabens and bisphenols via hydrogen bonding, π-π and hydrophobic interactions....
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Flexomagneticity in buckled shear deformable hard-magnetic soft structures
PublikacjaThis research work performs the first time exploring and addressing the flexomagnetic property in a shear deformable piezomagnetic structure. The strain gradient reveals flexomagneticity in a magnetization phenomenon of structures regardless of their atomic lattice is symmetrical or asymmetrical. It is assumed that a synchronous converse magnetization couples both piezomagnetic and flexomagnetic features into the material structure....
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Optimization of carbamazepine photodegradation on defective TiO2-based magnetic photocatalyst
PublikacjaIn this work, carbamazepine (CBZ) degradation over defective Fe3O4@SiO2/d-TiO2/Pt photocatalyst was studied. Within the titania structure, Ti vacancies and Pt nanoparticles were introduced to enhance the photocatalyst’s light absorption and influence charge carriers’ mobility. For the carbamazepine degradation, process parameters, e.g., temperature, flux intensity, photocatalyst loading, aeration, pH, and addition of H2O2, were optimized...
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A correct description of the interaction between a magnetic moment and its image
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Magnetic Covalent Organic Frameworks—Fundamentals and Applications in Analytical Chemistry
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Revealing the anisotropy effects on the critical magnetic field in CaC6 superconductor
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Magnetic structure and properties of theS=5∕2triangular antiferromagnetα−NaFeO2
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Bifunctional magnetic-upconverting luminescent cellulose fibers for anticounterfeiting purposes
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Rich magnetic phase diagram in the Kagome-staircase compound Mn3V2O8
PublikacjaNa podstawie pomiarów podatności magnetycznej i ciepła właściwego monokryształu Mn3V2O8 skonstruowano diagram fazowy. Właściwości magnetyczne związku są silnie anizotropowe.
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Analysis of magnetic field inside of vessel during degaussing process
PublikacjaPole magnetyczne wewnątrz okrętu podczas procesu demagnetyzacji może być niebezpieczne dla urządzeń elektronicznych. Demagnetyzacja okrętu jest przeprowadzana w celu minimalizacji namagnesowania stałego. W pracy przedstawiono wyniki analizy pola magnetycznego wewnątrz okrętu podczas procesu demagnetyzacji. Analizę numeryczną przeprowadzono w pakiecie OPERA 3D.
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Superstable magnetic nanoreactors with high efficiency for Suzuki-coupling reactions
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Filling of Carbon Nanotubes: Containers for Magnetic Probes and Drug Delivery
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Time Dependent Influence of Rotating Magnetic Field on Bacterial Cellulose
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Contact angle of the ferronanofluid and influence of the magnetic field on the drying droplet
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Synthesis and Characterization of Magnetic Nanomaterials with Adsorptive Properties of Arsenic Ions
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Magnetic, thermodynamic, and magnetotransport properties of CeGaGe and PrGaGe single crystals
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Magnetic hyperfine modulation of charge photogeneration in solid films of Alq3.
PublikacjaZewnętrzne pole magnetyczne (B=100mT) zwiększa fotoprzewodnictwo w hydro-sychinolinowym kompleksie aluminium (Alq3) o 6%. W silniejszych polach magnetycznych (B>100mT) wielkość efektu osiąga stałą wartość. Zaobserwowane wyniki doświadczalne wyjaśniono biorąc pod uwagę magnetyczno-polową modulację oddziaływań nadsubtelnych singletowych i trypletowych par elektron-dziurawy tworzonych w procesie fotogeneracji ładunku.
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The experimental method of reducing magnetic field intensity in industrial buidings
PublikacjaPrzedstawiono metodę obniżenia poziomu intensywności zakłóceń w budynkach pracującego zakładu przemysłowego. Potrzeba wykonania badań pola elektromagnetycznego wynikała m.in. z zaobserwowanej wśród pracowników jednego z działów zakładu większej podatności na zachorowania. Na drodze pomiarów zlokalizowano źródła silnego pola magnetycznego w zakresie małych częstotliwości. Na podstawie analizy wyników pomiarowych sformułowano wnioski...
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Mechanical and physical assessment of epoxy, mineral, solvent-based, and water-soluble coating materials
PublikacjaThis paper assesses the behavior of mineral, epoxy (EP), solvent, and water-soluble coatings when exposed to salt and regular water for 28 days. Also, it evaluates the pull-off adhesion strength of the same coating materials applied to concrete slabs saturated with oil and water and dried with two different processes: air-dried for 28 days and air-dried for 14 days plus 14 days in the oven at 70 °C. Properties such as carbonation,...
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Progress in the post weld residual stress evaluation using Barkhausen effect meter with a novel rotating magnetic field probe
PublikacjaWe report the progress in post weld residual stress evaluation using Barkhausen effect (BE) meter with rotating magnetic field probe. The novel probe of the BE meter contains two C-core electromagnets and searching coil with ferrite antenna. This meter allows automatic measurements of BE intensity envelopes at different angles of magnetizing field. The full process of measurement at given position of the probe takes about only...
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Estimation of Minimum Uncut Chip Thickness during Precision and Micro-Machining Processes of Various Materials—A Critical Review
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Smart Approach for Glioma Segmentation in Magnetic Resonance Imaging using Modified Convolutional Network Architecture (U-NET)
PublikacjaSegmentation of a brain tumor from magnetic resonance multimodal images is a challenging task in the field of medical imaging. The vast diversity in potential target regions, appearance and multifarious intensity threshold levels of various tumor types are few of the major factors that affect segmentation results. An accurate diagnosis and its treatment demand strict delineation of the tumor affected tissues. Herein, we focus on...
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Modeling and MANOVA studies on toxicity and endocrine potential of packaging materials exposed to different extraction schemes
PublikacjaThe stability of the linings of packaging that is in contact with the goods stored has been of major concern during decades of the development of packaging materials. In this work, an attempt was undertaken to assess the applicability of using two bioassays (Microtox® and XenoScreen YES/YAS) in estimating the stability of packaging (cans, caps, multilayer material) and the impact of their degradation on the toxicity of some simulated media....
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About definition of modes and magnetosonic heating in a plasma’s flow: Especial cases of perpendicular and nearly perpendicular wave vector and magnetic field
PublikacjaDynamics of hydrodynamic perturbations in a plasma depend strongly on an angle between the wave vector and equilibrium straight magnetic field. The case of perpendicular propagation is especial. There are only two (fast) magnetosonic modes since two (slow) ones degenerate into the stationary one with zero speed of propagation. This demands individual definition of wave modes by the links of hydrodynamic relations. These links are...
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SEM images of (La0.3Sr0.6Ce0.1)0.9FexTi(1-x)O3-δ (x=0.1, 0.2 and 0.3) materials after reduction at 900 deg.C in hydrogen
Dane BadawczeThe dataset presents SEM images of (La0.3Sr0.6Ce0.1)0.9FexTi(1-x)O3-δ (x=0.1, 0.2 and 0.3) powder materials synthesized via the Pechini method after reduction in hydrogen at 900C for 10h.
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Magnetic Phase Transition and Exchange Bias in $$\hbox {Ni}_{45}\hbox {Co}_{5}\hbox {Mn}_{35.5}\hbox {In}_{14.5}$$ Ni 45 Co 5 Mn 35.5 In 14.5 Heusler Alloy
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Long-term operating conditions for different sorption materials to capture phosphate from domestic wastewater
PublikacjaThis paper presents the results of a study on the possibility of applying various configured filters filled with a mixture of Rockfos® and Leca® material for the effective capture of phosphate from domestic wastewater. The tests were carried out for two years at two wastewater flow rates (20 and 40 L/day) in three pairs of filtration columns with a volume of filter material equal to 20 liters each. Columns 1A and 1B were filled...
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The Influence of the Chemical Composition of Selected Waste Materials from the Production of Copper on the Final Environmental Assessment
PublikacjaThis article presents qualitative and quantitative analysis of the waste produced by KGHM Polska Miedź. The waste has been analyzed according to its chemical composition and balanced in order to be reused and recycled. Special attention has been paid to mining industries producing the biggest amount of waste and ore enrichment businesses generating waste, which isn’t reused nowadays. Laboratory reseach has been conducted on floatation...
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The accessibility, necessity, and significance of certified reference materials for total selenium content and its species to improve food laboratories' performance
PublikacjaMicronutrients are one of the most important groups of nutrients that our body needs daily in trace amounts to tackle deficiencies. Selenium (Se) is a mineral that occurs naturally in foods and is an essential component of selenoproteins that support the healthy functioning of the human body. Therefore, monitoring dietary Se concentrations must be a higher priority to meet daily intakes. Fulfillment can be addressed through applying...
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Simulating coherent light propagation in a random scattering materials using the perturbation expansion
PublikacjaMultiple scattering of a coherent light plays important role in the optical metrology. Probably the most important phenomenon caused by multiple scattering are the speckle patterns present in every optical imaging method based on coherent or partially coherent light illumination. In many cases the speckle patterns are considered as an undesired noise. However, they were found useful in various subsurface imaging methods such as...
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Removal of lead ions from wastewater using lanthanum sulfide nanoparticle decorated over magnetic graphene oxide
PublikacjaIn 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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METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
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Monoterpenes emissions from different samples of wood-based materials – laminated chipboards and medium-density fiberboards (MDF)
PublikacjaThe paper presents the results of studies on emission rates of monoterpenes, carried out with the use of a new type of device - Markes’ Micro-Chamber/Thermal Extractor™ (μ-CTE250). Subject of studies were different types of wood-based materials such as: laminated chipboards and medium-density fiberboards (MDF). Based on the results obtained one can conclude that the laminated chipboards may affect the indoor air quality in much...
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Coffee Wastes as Sustainable Flame Retardants for Polymer Materials
PublikacjaDevelopment of green flame retardants has become a core part of the attention of material scientists and technologists in a paradigm shift from general purpose to specific sustainable products. This work is the first report on the use of coffee biowastes as sustainable flame retardants for epoxy, as a typical highly flammable polymer. We used spent coffee grounds (SCG) as well as SCG chemically modified with phosphorus (P-SCG)...
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Some Introductory and Historical Remarks on Mechanics of Microstructured Materials
PublikacjaHere we present few remarks on the development of the models of microstuctured media and the generalized continua.
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WASTE INCINERATORS: CORROSION PROBLEMS AND CONSTRUCTION MATERIALS - A REVIEW
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New materials and technologies used in chemical equipment design
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Damage Detection in Composite Materials Using Hyperspectral Imaging
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