Authors:Yang Zhao, Liang Zhao, Xing Wei, Buxing Han, and Haike Yan
The enthalpies of solution of potassium chloride (KCl) in water and magnetically treated water (magnetized water) have been
measured at 298.15 K using a LKB-8700 precision solution calorimeter. From the experimental results, it was observed that
the effect of magnetic field on the enthalpy of solution is measurable. This is probably due to the distortion of the hydrogen
bond of water resulting from magnetic treatment.
We give a simple proof of the existence of an almost contact metric structure on any orientable 3-dimensional Riemannian manifold
(M3, g) with the prescribed metric g as the adapted metric of the almost contact metric structure. By using the key formula for the structure tensor obtained
in the proof this theorem, we give an application which allows us to completely determine the magnetic flow of the contact
magnetic field in any 3-dimensional Sasakian manifold.
Authors:S Sipka, I Szöllősi, Gy Batta, Gy Szegedi, Á Illés, Gy Bakó, and D Novák
vitro exposure to static magneticfield. J. Toxicol. Environ. Health A. 54, 63-76 (1998)
Increased apoptosis, changes in intracellular Ca 2+ , and functional alterations in lymphocytes and macrophages after in vitro exposure
Authors:Irena Malinowska, Marek Studzinski, and Henryk Malinowski
Magnetic field can influence some processes taking part in the solid—liquid interphase area. An excellent tool for the investigation of this phenomenon is thin-layer chromatography. In this experiment, the influence of magnetic field parallel with chromatogram development direction on retention and system efficiency was investigated. The application of superconducting magnet allowed for generating the adjustable magnetic field up to about 2 T and allowed for investigation on dependence between inductivity of the field and retention changes of the chosen polyaromatic hydrocarbons. The obtained results show that the presence of magnetic field alternates the interactions among all components of a chromatographic system. Thus, in order to predict substance retention and system efficiency changes induced by the presence of the field, more parameters than the force acting on chromatographed molecule must be taken into account.
Authors:Anita Šalić, Katarina Pindrić, Gordana Hojnik Podrepšek, Nikolina Novosel, Maja Leitgeb, and Bruno Zelić
In this study, magnetic nanoparticles (MNPs) of maghemite (γ-Fe2O3) were synthesized and characterized. The method of multifactor experimental design and evolutionary operation (EVOP) was used to optimize immobilization of the alcohol dehydrogenase (ADH) enzyme on MNPs. Optimal operating conditions for the immobilization process were determined (γADH = 0.08 mg/mL, 2% glutaraldehyde for surface activation, t = 28 h), and in such conditions, a specific activity of S.A. = 118 ± 6 U/mg and immobilization efficiency of η = 84.97 ± 3.67% were achieved. Compared to the native enzyme, ADH immobilized on MNPs retained 66.45 ± 3.66% of the initial activity. ADH immobilized on MNPs at optimal conditions was used as a biocatalyst for model reaction—NADH oxidation. NADH oxidation was performed in two different magnetic microreactor configurations: (1) microreactor equipped with permanent square magnets and (2) microreactor equipped with an electromagnet and an oscillating magnetic field that enables magnetic particles movement in the microreactor. In the system with the oscillating magnetic field, equal conversion (X = 100%) was achieved in 2-fold shorter residence time.
The Mössbauer analysis of rust samples obtained in the presence and absence of a magnetic field shows that there is a difference in the qualitative and quantitative composition of the corrosion products. The effect of magnetic field depends on the orientation of the coupons in the magnetic field and its intensity.
Authors:Irena Malinowska, Marek Studziński, and Henryk Malinowski
The effect of a magnetic field on the planar chromatographic retention of some PAH has been investigated. The horizontal chamber was placed between two neodymium magnets and chromatograms were developed in the magnetic field created. The effect of the magnetic field was tested for single-component and binary mobile phases containing
-alkanes and aromatic hydrocarbons. PAH were used as solutes. The results obtained showed that magnetic fields can affect the retention and shape of the chromatographic bands of the solutes investigated. The effect depends on the type of mobile phase, the properties of the adsorbent layer and the mode of development of the chromatogram (development distance).