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Search results for: NUCLEAR MAGNETIC RESONANCE
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Magnetic hyperfine modulation of charge photogeneration in solid films of Alq3.
PublicationZewnętrzne 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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Revealing the anisotropy effects on the critical magnetic field in CaC6 superconductor
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Magnetic, thermodynamic, and magnetotransport properties of CeGaGe and PrGaGe single crystals
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Magnetic composite adsorbents of phenolic compounds with superior corrosion resistance
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Magnetic structure and properties of theS=5∕2triangular antiferromagnetα−NaFeO2
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Flexomagneticity in buckled shear deformable hard-magnetic soft structures
PublicationThis 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
PublicationIn 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 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
PublicationA 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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Progress in the post weld residual stress evaluation using Barkhausen effect meter with a novel rotating magnetic field probe
PublicationWe 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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Fluorescence resonance energy transfer usage to track the sequence promoter changes in CGB5 gene in ovarian cancer patients
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Determination of cathepsin G in endometrial tissue using a surface plasmon resonance imaging biosensor with tailored phosphonic inhibitor
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The Experimental Determination of Bearings Dynamic Coefficients in a Wide Range of Rotational Speeds, Taking into Account the Resonance and Hydrodynamic Instability
PublicationMethods for the experimental determination of dynamic coefficients are commonly used for the analysis of various types of bearings, including hydrodynamic, aerodynamic and foil bearings. There are currently several algorithms that allow estimating bearing dynamic coefficients. Such algorithms usually use various excitation techniques applied to rotor–bearings systems. So far only a small number of scientific publications show how...
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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
PublicationDynamics 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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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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HYGRO-MAGNETIC VIBRATION OF THE SINGLE-WALLED CARBON NANOTUBE WITH NONLINEAR TEMPERATURE DISTRIBUTION BASED ON A MODIFIED BEAM THEORY AND NONLOCAL STRAIN GRADIENT MODEL
PublicationIn this study, vibration analysis of single-walled carbon nanotube (SWCNT) has been carried out by using a refined beam theory, namely one variable shear deformation beam theory. This approach has one variable lesser than a contractual shear deformation theory such as first-order shear deformation theory (FSDT) and acts like classical beam approach but with considering shear deformations. The SWCNT has been placed in an axial or...
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An air-assisted dispersive liquid phase microextraction method based on a hydrophobic magnetic deep eutectic solvent for the extraction and preconcentration of melamine from milk and milk-based products
PublicationIn the current research, a fast and sustainable air-assisted hydrophobic magnetic deep eutectic solvent-based dispersive liquid phase microextraction followed by UV–Vis spectrophotometry measurements was optimized for the extraction and determination of melamine in milk and milk-based products. The central composite design was applied for the optimization of factors affecting the recovery of melamine. Quantitative extraction of...
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Copper(II) complexes with substituted imidazole and chlorido ligands: X-ray, UV-Vis, magnetic and EPR studies and chemotherapeutic potential
PublicationCrystal structures, UV-Vis and EPR spectra and magnetic properties of four copper(II) complexes with chloride anions and 4-methylimidazole, 2-ethylimidazole, 2-isopropylimidazole or 2-ethyl-4-methylimidazole are described. In the solid state three of the complexes are mononuclear and one complex with 2-ethylimidazole is binuclear with bridging chlorido ions. UV-Vis spectra of the methanolic solutions of the complexes show LMCT...
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Studies of Optimal Conditions for Depletion of the $^{110m}$Ag Isomer Via Nuclear Excitation by Electron Capture in a Beam-based Scenario
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Comparison of endotracheal intubation performed with 3 devices by paramedics wearing chemical, biological, radiological, and nuclear personal protective equipment
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Protein transphosphorylation during the mutual interaction between phytochrome a and a nuclear isoform of nucleoside diphosphate kinase is regulated by red light
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Functional nuclear retention of pre-mRNA involving Cajal bodies during meiotic prophase in European larch (Larix decidua)
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Continuous three-dimensional radiation dosimetry in tissue-equivalent phantoms using electron paramagnetic resonance in L -α-alanine
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On Raman optical activity sign-switching between the ground and excited states leading to an unusual resonance ROA induced chirality
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Letter to the Editor: Complete resonance assignments of the 'donor-strand' AfaD: The afimbrial invasin from Diffusely Adherent E. coli.
PublicationUstalono strukturę NMR rekombiantowego białka AfaD-dsc. Uzyskane wyniki są podstawą do badań rentgenograficznych struktury białek AfaD/DraD.
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Plasma diagnostics of low pressure high power impulse magnetron sputtering assisted by electron cyclotron wave resonance plasma
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Removal of phenolic inhibitor compounds from hydrolysates and post-fermentation broths by using a Hydrophobic Magnetic Deep Eutectic Solvent
PublicationHydroxymethylfurfural (HMF), furfural (FF), hydroquinone (HQ), and vanillin (VAN) are among the main inhibitors generated during most of biomass pre-treatments prior to fermentation processes. They are recognized as toxic to several fermentative microorganisms and therefore cause a decrease in biohydrogen or biofuel production (after hydrolysis). Moreover, if they are released into aqueous solutions (after fermentation), they can...
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Investigation of mixing time in liquid under influence of rotating magnetic field
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Effects of a rotating magnetic field on gas-liquid mass transfer coefficient
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Functionalized Magnetic Bacterial Cellulose Beads as Carrier for Lecitase® Ultra Immobilization
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Chemical and magnetic functionalization of graphene oxide as a route to enhance its biocompatibility
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Cobalt Content Effect on the Magnetic Properties of Ni50-xCoxMn35.5In14.5 Annealed Ribbons
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Magnetoelectric Vortex Magnetic Field Sensors Based on the Metglas/PZT Laminates
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Stimulation of Heavy Metal Adsorption Process by Using a Strong Magnetic Field
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Distance magnetic nanoparticle detection using a magnetoelectric sensor for clinical interventions
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Study on the Effect of Rotating Magnetic Field on Cellular Response of Mammalian Cells
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Electronic conductivity in the SiO2–PbO–Fe2O3 glass containing magnetic nanostructures
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Investigation of the magnetic hyperthermia effect in an aqueous dispersion of colloidosomal nanoparticle clusters
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A virtual instrument for the adaptive analysis of low-frequency magnetic-field emissions
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Magnetic structure and properties of the S=5/2 triangular antiferromagnet - NaFeO2
PublicationWłaściwości magnetyczne związku NaFeO2 badane były za pomocą techniki dyfrakcji neutronowskiej i poprzez pomiar podatności magnetycznej.
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Effective processes of phenol degradation on Fe3O4–TiO2 nanostructured magnetic photocatalyst
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Slot harmonics in cage motors due to saturation of a main magnetic circuit
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Effect of pine essential oil and rotating magnetic field on antimicrobial performance
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Magnetic properties of charge ordered complex TCNQ salts with lattice distortions
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Magnetic field effects on emission and current in Alq3 - based electroluminescent devices.
PublicationW pracy zaobserwowano stromy wzrost natężenia elektroluminescencji w polach magnetycznych nie przekraczających 300mT. Efekt ten wywołany jest magnetyczno polową redukcją stopnia zmieszania singletowych i trypletowych par elektron dziura, wymuszonego przez nadsubtelne oddziaływanie spinów elektronowych z ich otoczeniem jądrowym.
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Modelling of axial magnetic field effect on electric arc in ablation capillaries
PublicationBadano wpływ osiowego pola magnetycznego na łuk elektryczny w kapilarze ablacyjnej o średnicy do 3 mm. Wyniki porównywano z kapilarą ceramiczną. Łuk zasilany był z baterii kondensatorów prądem do około 1200 A. Stosowano pole magnetyczne wolnozmienne oraz wysokoczęstotliwościowe o indukcji do 10 T. Stwierdzono nawet 3-krotny wzrost napięcia łukowego pod wpływem osiowego pola magnetycznego w kapilarze gazującej, przy braku reakcji...
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Numerical contribution to the viscoelastic magnetic lubrication of human joint in periodic motion.
PublicationPraca przedstawia rozwiązania problemu smarowania stawów człowieka w układzie współrzędnych ortogonalnych krzywoliniowych dla ruchu nieustalonego okresowego w polu magnetycznym. Uwzględnia się lepkosprężyste właściwości cieczy synowialnej w trakcie smarowania
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Magnetic Susceptibility of Spider Webs and Dust: Preliminary Study in Wrocław, Poland
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Representation of magnetic hysteresis in tape wound core using Preisach's theory
PublicationW referacie przedstawiono model matematyczny histerezy magnetycznej w ujęciu klasycznej teorii Preisacha. Dokonano implementacji skalarnego modelu Preisacha w odniesieniu do rdzenia zwijanego z taśmy typu ET114-27. Do symulacji różnych stanów magnetycznych rdzenia wykorzystano jedynie dane z pomiarów głównej pętli histerezy. Wyznaczono funkcję Everetta i funkcję dystrybucji Preisacha badanego rdzenia. Uzyskano ogólnie dobrą zgodność...
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Curing epoxy with electrochemically synthesized Zn Fe3-O4 magnetic nanoparticles
PublicationCathodic electrodeposition (CED) was applied in synthesis of undoped and zinc (Zn) doped Fe3O4 nanoparticles. Changes in the lattice structure of nanoparticles were monitored using X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM) supported by dispersive X-ray spectrometry (EDS), and vibrating sample magnetometry (VSM). Detailed analyses explored the formation of ZnxFe3–xO4 nanoparticles with x ≈ 0.1,...
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Mo93m isomer depletion via nuclear excitation by electron capture in resonant transfer into highly excited open-shell atomic states
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