The Role of Methods for Applying Cucurbit[6]uril to Hydroxyapatite for the Morphological Tuning of Its Surface in the Process of Obtaining Composite Materials.

In this work, composite materials were obtained for the first time using various methods and the dependences of the resulting surface morphologies were investigated. This involves modifying the surface with cucurbit[n]urils, which are highly promising macrocyclic compounds. The process includes applying cucurbit[6]uril to the hydroxyapatite surface in water using different modification techniques.

The Synthesis of a New Glycoluryl-Melamine-Formaldehyde Polymer under the Action of HEDP and the Investigation of the Content of Methylol Groups and Free Formaldehyde.

This study outlines a method for preparing a complex involving glycoluril and melamine (GU-ME). The structure of the resultant complex was analyzed using IR and NMR spectroscopy. In the subsequent phase, the polymer GUMEFA was derived from the resultant complex, employing hydroxyethylidene diphosphonic acid (HEDP) as a sustainable plasticizer, with a proposed chemical mechanism for its formation.

Development of New Composite Materials by Modifying the Surface of Porous Hydroxyapatite Using Cucurbit[n]urils.

This study represents an advancement in the field of composite material engineering, focusing on the synthesis of composite materials derived from porous hydroxyapatite via surface modification employing cucurbit[n]urils, which are highly promising macrocyclic compounds. The surface modification procedure entailed the application of cucurbit[n]urils in an aqueous medium onto the hydroxyapatite surface. A comprehensive characterization of the resulting materials was undertaken, employing analytical techniques including infrared (IR) spectroscopy and scanning electron microscopy (SEM).

Obtaining New Biocompatible Composite Materials with Antibacterial Properties Based on Diatomite and Biologically Active Compounds.

This study aimed to create new composite materials based on diatomite-a non-organic porous compound-through its surface modification with bioactive organic compounds, both synthetic and natural. Chloramphenicol, tetrahydroxymethylglycoluril and betulin were used as modifying substances. Composite materials were obtained by covering the diatomite surface with bioactive substance compounds as a solution and material dispersion in it.

Development of Novel Composite Biocompatible Materials by Surface Modification of Porous Inorganic Compounds Using Bambus[6]Uril.

In this present investigation, a novel series of composite materials based on porous inorganic compounds-hydroxyapatite and diatomite-have been innovatively formulated for the first time through surface modification employing the promising macromolecular compound, bambus[6]uril. The process entailed the application of a bambus[6]uril dispersion in water onto the surfaces of hydroxyapatite and diatomite. Extensive characterization was carried out, involving IR spectroscopy and SEM.

A Device for Transcutaneous Stimulation of the Diaphragm.

Results obtained during the development of an original device for noninvasive transcutaneous stimulation of the diaphragm using electromagnetic radiation in the terahertz frequency range are presented. The block diagram and design of a terahertz emitter and a controlled current source for its power supply are presented, along with specialized software for selecting and setting the amplitude and time parameters of the stimulating signal.

[Immunologic shifts in patients with multiple and combined injuries].

In 102 patients with multiple and associated traumas at day 1, 3, 7 and 14 after trauma, the content of T- and B-lymphocytes, IgG, IgA, IgM, complement and beta-lysins was defined. The uniform immunological shifts of the indices of specific and non-specific immunity with a different degree of pronouncement, depending on the initial immune status, severity of trauma, volume of blood loss, development of wound infection, individual peculiarities of the sufferers, were established.

[Indicators of immunity during treatment of infected wounds by low-frequency ultrasonics].

In the experiment on 30 guinea pigs and in observation of 63 patients with the infected wounds, it was established that treating wounds by low-frequency ultrasound contributed to reduction in the degree of wound contamination with bacteria, penetration of bacterial antigens into the blood, and as well decrease in the number of T-lymphocytes, levels of the IgG, IgM and complement depending on the type of the infective agent and time of wound treatment.

[Potentiation of the action of antibiotics by ultrasound].

The aim of the study was to investigate the action of ultrasound on antimicrobial drugs and to estimate the effect of antibacterial drugs and ultrasound used in combination and alone. In the first series of the experiments it was shown that under the action of ultrasound such antibiotics as benzylpenicillin, streptomycin, ampicillin, lincomycin, monomycin, rifampicin and gentamicin, and antiseptic drugs such as furacin, rivanol and iodinol did not change their antibacterial (bacteriostatic and bactericidal) properties with regard to Staphylococcus aureus and Escherichia coli. In the second series of the experiments it was shown that ultrasound potentiated by 1.