Gorobets S.V.

Agrobacteria as the Potential Producents of Magnetosensitive Nanostructures

The aim of the study was the identification of the homologues of the Mam proteins mediating the magnetite synthesis of Magnetospirillum gryphiswaldense MSR-1 in the proteome of agrobacteria and their host plants. The identification of the protein homologues was performed by pairwise alignment using the online-service BLAST.

Application of Magnetically Labeled Cells S. Cerevisiae as Biosorbents at Treatment Plants

This paper studies the sorption capacity of magnetically labeled biosorbents – yeast cells Saccharomyces cerevisiae – to remove iron ions (II). The study is conducted on model solutions and wastewater samples from Slavutych, Chernihiv region. We obtain magnetically treated biosorbents by modifying Saccharomyces cerevisiae baker yeast by magnetite nanoparticles. We perform modification by mechanical and multivertex magnetohydrodynamic mixing (MHDM) of yeasts’ suspensions with magnetite nanoparticles.

Ferritine and biomineralization of biogenic magnetic nanoparticles in microorganisms

In this paper, we verify the hypothesis on obligatory participation of ferritin molecules in the biomineralization process of biogenic magnetic nanoparticles assuming that the genetic mechanism of biogenic magnetic nanoparticles is consistent for prokaryotes and eukaryotes. Using comparative genomic methods, we seek to reveal whether all the magnetic bacteria have ferritin genes in their genome. Well known proteins (ferritin and ferritin-like proteins) are compared with compiling magnetotactice bactria genomes using the blastn “BLAST on-line” under standard program parameters.

Biomineralization of Intracellular Biogenic Magnetic Nanoparticles and Their Expected Functions

The purpose of this paper is to analyze the similarity between proteins of MI MTB and organisms genomes of three main kingdoms: bacteria, archea and eukaryotes for revealing the joint genetic basis of biomineralization of intracellular biogenic magnetic nanoparticles (IBMN). In addition, the research objective is to estimate the energy of paramagnetic and efficiently paramagnetic energy of cluster components compared with their thermal motion energy for establishing the physical mechanism of possible influence of nonuniform in a magnetic field of IBMN on cell metabolism.

Genetic Regulation and Phenotypic Expression of the Properties of Biogenic Magnetic Nanoparticles in Magnetotactic Bacteria and Human

By employing the bioinformatics methods, we consider the similarity between the genes of magnetosome island of magnetotactic bacteria and human genes for establishing the degree of homology and determination of functional class of proteins. We analyze the most meaningful coincidences between the genes of magnetosome island of bacteria of Magnetospirillum gryphiswaldense and human genes. We uncover the essential smoothing mainly among proteins of functional class.

Biofunctionalization of Nanocomposites Ba¬sed on Magnetite Modified with Mezo-2,3-Dymer-captosuccin Acid

In this paper, we synthesize magnetite-based nanocomposites modified by meso-2,3-dymercaptosuccin acid with biologically active immobilized components (normal human immunoglobulin (Ig) and 2 mercaptonycotin acid (2-MNC). Also, we investigate physical-and chemical properties of magnetic suspensions based on them. We develop the method of chemical surface modification of single-domain magnetite with thiol groups. The obtained nanocomposite is biofunctionalized by normal human immoglobulin by using sulfo-SMCC heterofunctionalized reagent.

Self-Organization of Magnetic Nanoparticles When Giving Magnetic Properties to Yeast Saccharomyces Cerevisiae

We develop and conduct the compararative analysis of four evaluation methods of clusters parameters of magnetic nanoparticles. The magnetically-controllable biosorbent based on the S. cerevisiae culture is used as a model object for analyzing the adequacy of these models. Finally, we obtain the evaluation data on the depth of clusters penetration inside the biomembrane, typical sizes of clusters and dispersion of magnetic cluster sizes. Our analysis shows that all four methods can be used for single magnetic clusters.

The Effect of Magnetostatic Fields of Ferromagnetic Substrate on the Nickel Dendrites Electrodeposition

The paper studies the effect of magnetic state of ferromagnetic substrate on the surface morphology of nickel electrodeposit obtained by the method of electrolysis. After conducting the statistical analysis, we can assume that the residual magnetization of substrate-wire significantly influences dimensioning characteristics of the formed dendrite structures at the absence of an external magnetic field at the Ni electrodeposition. The studied magnetic properties of substrate-wire are confirmed by Bitter powder figures.

The magnetic field influence on steel etching process in water solution of nitric acid

The paper considers the influence of the magnetic field on the process of steel plates etching in the nitric acid solution under the different rolling direction, generated in the process of steel production. Under the condition of the preliminary influence of the variable magnetic field on the steel plates before etching, we discovered the time dependences for the change of the etched steel mass in the nitric acid solution inside and outside the magnetic field.

Wastewater purification from cuprum (ІІ) ions by magnetically operated biosorbent using high-gradient ferromagnetic fields

This paper highlights the method of purification from cuprum ions by using high-gradient magnetic fields. We devise the production method of highgradient ferromagnetic matrices with dendrite structure and study its efficiency. We also show the difference between the efficiency of solutions purification by utilizing dendrite and dendriteless matrices. Crucially, we prove the higher efficiency of the dendrite matrix performance as compared to the dendriteless one.