55 research outputs found
Plasma-beam instabilities in cometary ionospheres
It is shown that the interaction between the solar wind flux and the cometary ionosphere leads to the excitation of ion sound, whistler, electron-cyclotron, low hybrid, and magnetohydrodynamic waves. We investigated the frequency spectrum and found linear-increasing increments and lengths of excited waves
Optical bus of centralized relay protection and automation system of medium voltage switchgear for data collection and transmission
The article deals with the system of information collection and transfer from a centralized relay protection and automation system for medium voltage electrical units based on a passive optical bus. The issues of electromagnetic compatibility of technical devices are also considered, and the intensity of electromagnetic interference is calculated in the distribution center of medium voltage. Since the electric power industry objects are characterized by a complex electromagnetic environment, including a significant adverse effect on the reliability and full functionality of modern microprocessor relay protection and anti-emergency automatic systems, the solution is considered for a centralized relay protection and automation system based on xPON passive optical network technology.Key words: centralized system of relay protection and automation, signaling and measurements; distribution point of medium voltage; medium voltage distribution network; electromagnetic interference; conductive low-frequency interference; conductive highfrequency interference; IEC 61850; IEC 61000-2-5-195; IEC 61000-4; Degree of electromagnetic compatibility intensity
Hydrophobization of Track Membrane Surface by Magnetron Sputter Deposition of Ultra-high Molecular Weight Polyethylene
Method for the formation of polymer coatings on the poly(ethylene terephthalate) track-etched membrane surface by magnetron sputter deposition of ultra-high molecular weight polyethylene in a vacuum is considered. The surface morphology and chemical structure of nanoscale coatings have been investigated. It is shown that the application of the ultra-high molecular weight polyethylene-like coatings leads to hydrophobization of the membrane surface, the degree of which depends on the coating thickness. Besides, the usage of this modification method leads to smoothing of structural inhomogeneity of the membrane surface, a decrease in pore diameter, and alteration of pore shape. The investigation of the chemical structure of deposited coatings by XPS method showed that they contain a significant concentration of oxygen-containing functional groups. The composite membranes of the developed sample can be used in the process of desalination of seawater by the method of membrane distillation
Ionospheric disturbances generated by different natural processes and by human activity in Earth plasma environment
The magnetosphere-ionosphere-thermosphere subsystem is strongly coupled via the electric field, particle precipitation, heat flows and small scale interaction. Satellites in situ measurements and ground
based complex diagnostics can provide comprehensive coverage of both time and geomagnetic place effects. Human activity also can perturb Earth s environment, but few are connected with controlled experiments in the ionosphere and are transient. Most of them are related to industrial activity and have increased
in recent years. The most important power sources are broadcasting transmitters, power stations, power lines and heavy industry. At ionospheric altitude some disturbances and physical processes are related to seismic activity, thunderstorm activity and some global changes in the Earth environment such as ozone holes. Various natural and artificial indicators can affect satellite telecommunication quality. The aim of this presentation is to report progress in understanding the physical processes in the ionosphere
described above and to assess the application of these considerations to the study of plasma effects on Earth-space and satellite-to-satellite communication
ΠΡΠ΅Π½ΠΊΠ° ΠΎΡΡΠ°Π»ΡΠΌΠΎΡΠΎΠΊΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ Π²ΠΎΠ·Π΄Π΅ΠΉΡΡΠ²ΠΈΡ ΠΊΠ²Π°Π½ΡΠΎΠ²ΡΡ ΡΠΎΡΠ΅ΠΊ ΠΈ Π±ΠΈΠΎΠΊΠΎΠ½ΡΡΠ³Π°ΡΠΎΠ² Π½Π° ΠΈΡ ΠΎΡΠ½ΠΎΠ²Π΅ Π² Π°ΡΠΏΠ΅ΠΊΡΠ΅ ΠΏΠ΅ΡΡΠΏΠ΅ΠΊΡΠΈΠ² Π»Π΅ΡΠ΅Π½ΠΈΡ ΡΠ΅Π·ΠΈΡΡΠ΅Π½ΡΠ½ΡΡ ΡΠ½Π΄ΠΎΡΡΠ°Π»ΡΠΌΠΈΡΠΎΠ². ΠΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ°Π»ΡΠ½ΠΎΠ΅ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅ (1-ΠΉ ΡΡΠ°ΠΏ)
Endophthalmitis remains one of the most formidable complications of surgery in ophthalmology, leading to significant functional and anatomical changes. The "gold" standard of treatment for this pathology is the installation of intravenous injections of antibacterial drugs, but taking into account the number and type of pathogens, the growth of antibiotic resistance, the search for alternative methods of treatment of endophthalmitis remains relevant. Colloidal quantum dots, which are nanoscale semiconductor crystals with simulated optical and electronic properties due to changes in their volume, composition, and surface connections, are of interest for research in this direction. This article presents the process of synthesis of CT and bioconjugates based on them in order to assess ophthalmotoxicity with the prospect of further use in the treatment of endophthalmitis. The study was divided into 4 stages, starting with the determination of the required technical specification in order to select the appropriate type of quantum dots taking into account the physical and chemical characteristics (Stage 1), the synthesis of quantum dots (Stage 2), the preparation and titration of a solution of quantum dots of various concentrations for implantation in the vitreous cavity (Stage 3). The final stage was to evaluate the toxic effect of the quantum dot solution in its pure form, as well as in combination with antibiotics (ceftazidime and vancomycin) when administered intravitreally on an animal model. As a result of the study, quantum dots were synthesized and a solution based on them was obtained for introduction into the vitreous cavity. Based on the testing of the animal model (rabbits), a safe dose of the solution was determined, as well as the possibility of its use in combination with antibiotics. Β© 2021 Ophthalmology Publishing Group. All rights reserved
Π‘ΠΎΠ²ΡΠ΅ΠΌΠ΅Π½Π½Π°Ρ ΡΠΎΠ»Ρ ΠΈ ΠΏΠ΅ΡΡΠΏΠ΅ΠΊΡΠΈΠ²Ρ ΡΠ»Π΅ΠΊΡΡΠΎΡΠΈΠ·ΠΈΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΡ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠ² ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ Π² ΠΎΡΡΠ°Π»ΡΠΌΠΎΠ»ΠΎΠ³ΠΈΠΈ. ΠΠ±Π·ΠΎΡ Π»ΠΈΡΠ΅ΡΠ°ΡΡΡΡ
Electrophysiological research today remains an important method for the objective assessment of the functional state of the components of the visual analyzer. There are methods, for example, OCT, that can objectively assess the structural and anatomical integrity of the retina, however, only indirectly shows functional activity. The undoubted advantage of EFR is the ability, excluding the subjectivity of the subject, to perform a functional topographic assessment of the malfunction of all systems of the visual analyzer. Private electrophysiology of the vision organ is represented by a variety of methods for recording the electrobiological activity of the cells of the visual analyzer: ERG, EOG, VEP, mfERG (multifocal electroretinography), and each option is directed to a separate part of it, therefore, to complete the picture, in particular in research works on animal models may use several techniques. In general, the limitation of EFR is its complexity and many confounding factors that can affect the result, ranging from stimulation parameters to the state of the patient himself. At the same time, the main area of prospective use of electrophysiological research is differential diagnosis, preclinical toxicology and scientific and experimental models. However, in recent decades, the active introduction of registration methods, including the appearance of multifocal electroretinography, as well as changes in the conditions of electrophysiological studies, open up new possibilities for the future evolution of the method. Classical methods for evaluating EFR data, taking into account the growth of data flow, do not provide detailed qualitative and quantitative information about the state of the visual analyzer. This leaves the possibility and the need for the study, optimization and algorithmization of the assessment data of the differentiated criteria inherent for a particular ocular pathology. EFRs require simpler and more adapted protocols for clinical practice, allowing a strictly differentiated approach to the smallest anatomical and functional changes, based on open databases and modern adaptation based on artificial intelligence. Β© 2020 Ophthalmology Publishing Group. All rights reserved
ΠΠΈΠ΄Π΅ΡΡΡΠ²ΠΎ ΡΡΠΊΠΎΠ²ΠΎΠ΄ΠΈΡΠ΅Π»Ρ ΡΠ΅Π³ΠΈΠΎΠ½Π°: ΠΊΠΎΠΌΠΏΠ΅ΡΠ΅Π½ΡΠΈΠΈ, ΠΏΡΠΈΡ ΠΎΠ»ΠΎΠ³ΠΈΡ, ΡΡΠ΅Π΄ΡΡΠ²Π° ΡΠ°Π·Π²ΠΈΡΠΈΡ
Introduction. The article presents the results of research on the transformation of the political system of modern Russia, updating regional governance and analyzing the personalities of regional leaders, the process of replacing governors of the Β«oldΒ» generation with those of the Β«newΒ» generation, meeting the requirements of the federal government and the expectations of the population, the correspondence of the personal qualities of governors to the challenges of our time.Purpose setting. The purpose of the study is to determine the types of leadership of heads of Russian regions and to define the current factors of their formation.Methodology and methods of study. The research is based on studying the nature of leadership behavior of regional leaders in modern Russia. The data obtained are correlated with strategic objectives in the field of training management personnel responsible for regional development, the features of the managerial style and positioning of governors are considered, as well as the influence of these factors on economic development and the formation of the image of the region is evaluated.Results. The authors of the study found that at the moment in Russia a corps of governors of the Β«new waveΒ» is actively being formed, which are characterized by such features of image and behavior as active communication with the population (including through social networks), involvement in the implementation of the state agenda and the opportunity lobbying for the interests of the region, readiness to quickly respond to events and appeals, involvement in resolving issues related to the special military operation.Conclusion. As an example of the effective manifestation of leadership of the head of the region, the leadership style of the governor of the Omsk Oblast V. P. Khotsenko is considered.ΠΠ²Π΅Π΄Π΅Π½ΠΈΠ΅. Π ΡΡΠ°ΡΡΠ΅ ΠΏΡΠ΅Π΄ΡΡΠ°Π²Π»Π΅Π½Ρ ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΡ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠΉ ΠΎΡΠ½ΠΎΡΠΈΡΠ΅Π»ΡΠ½ΠΎ ΡΡΠ°Π½ΡΡΠΎΡΠΌΠ°ΡΠΈΠΈ ΠΏΠΎΠ»ΠΈΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΠΈΡΡΠ΅ΠΌΡ ΡΠΎΠ²ΡΠ΅ΠΌΠ΅Π½Π½ΠΎΠΉ Π ΠΎΡΡΠΈΠΈ, ΠΎΠ±Π½ΠΎΠ²Π»Π΅Π½ΠΈΡ ΡΠ΅Π³ΠΈΠΎΠ½Π°Π»ΡΠ½ΠΎΠ³ΠΎ ΡΠΏΡΠ°Π²Π»Π΅Π½ΠΈΡ ΠΈ Π°Π½Π°Π»ΠΈΠ·Π° Π»ΠΈΡΠ½ΠΎΡΡΠ΅ΠΉ ΡΠ΅Π³ΠΈΠΎΠ½Π°Π»ΡΠ½ΡΡ
Π»ΠΈΠ΄Π΅ΡΠΎΠ², ΠΏΡΠΎΡΠ΅ΡΡΠ° ΡΠΌΠ΅Π½Ρ Π³ΡΠ±Π΅ΡΠ½Π°ΡΠΎΡΠΎΠ² Β«ΡΡΠ°ΡΠΎΠ³ΠΎΒ» ΠΏΠΎΠΊΠΎΠ»Π΅Π½ΠΈΡ Π³ΡΠ±Π΅ΡΠ½Π°ΡΠΎΡΠ°ΠΌΠΈ Β«Π½ΠΎΠ²ΠΎΠ³ΠΎΒ» ΠΏΠΎΠΊΠΎΠ»Π΅Π½ΠΈΡ, Π²ΡΠΏΠΎΠ»Π½Π΅Π½ΠΈΡ ΡΡΠ΅Π±ΠΎΠ²Π°Π½ΠΈΠΉ ΡΠΎ ΡΡΠΎΡΠΎΠ½Ρ ΡΠ΅Π΄Π΅ΡΠ°Π»ΡΠ½ΠΎΠΉ Π²Π»Π°ΡΡΠΈ ΠΈ ΠΎΠΆΠΈΠ΄Π°Π½ΠΈΠΉ Π½Π°ΡΠ΅Π»Π΅Π½ΠΈΡ, ΡΠΎΠΎΡΠ²Π΅ΡΡΡΠ²ΠΈΡ Π»ΠΈΡΠ½ΠΎΡΡΠ½ΡΡ
ΠΊΠ°ΡΠ΅ΡΡΠ² Π³ΡΠ±Π΅ΡΠ½Π°ΡΠΎΡΠΎΠ² Π²ΡΠ·ΠΎΠ²Π°ΠΌ ΡΠΎΠ²ΡΠ΅ΠΌΠ΅Π½Π½ΠΎΡΡΠΈ.ΠΠΎΡΡΠ°Π½ΠΎΠ²ΠΊΠ° Π·Π°Π΄Π°ΡΠΈ. Π¦Π΅Π»Ρ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ β ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΠ΅ ΡΠΈΠΏΠΎΠ² Π»ΠΈΠ΄Π΅ΡΡΡΠ²Π° ΡΡΠΊΠΎΠ²ΠΎΠ΄ΠΈΡΠ΅Π»Π΅ΠΉ ΡΠΎΡΡΠΈΠΉΡΠΊΠΈΡ
ΡΠ΅Π³ΠΈΠΎΠ½ΠΎΠ² ΠΈ Π°ΠΊΡΡΠ°Π»ΡΠ½ΡΡ
ΡΠ°ΠΊΡΠΎΡΠΎΠ² ΠΈΡ
ΡΠΎΡΠΌΠΈΡΠΎΠ²Π°Π½ΠΈΡ.ΠΠ΅ΡΠΎΠ΄ΠΈΠΊΠ° ΠΈ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠ»ΠΎΠ³ΠΈΡ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ. Π ΠΎΡΠ½ΠΎΠ²Ρ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ ΠΏΠΎΠ»ΠΎΠΆΠ΅Π½ΠΎ ΠΈΠ·ΡΡΠ΅Π½ΠΈΠ΅ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠ° Π»ΠΈΠ΄Π΅ΡΡΠΊΠΎΠ³ΠΎ ΠΏΠΎΠ²Π΅Π΄Π΅Π½ΠΈΡ ΡΡΠΊΠΎΠ²ΠΎΠ΄ΠΈΡΠ΅Π»Π΅ΠΉ ΡΠ΅Π³ΠΈΠΎΠ½ΠΎΠ² Π² ΡΠΎΠ²ΡΠ΅ΠΌΠ΅Π½Π½ΠΎΠΉ Π ΠΎΡΡΠΈΠΈ. ΠΠΎΠ»ΡΡΠ΅Π½Π½ΡΠ΅ Π΄Π°Π½Π½ΡΠ΅ ΡΠΎΠΎΡΠ½ΠΎΡΡΡΡΡ ΡΠΎ ΡΡΡΠ°ΡΠ΅Π³ΠΈΡΠ΅ΡΠΊΠΈΠΌΠΈ Π·Π°Π΄Π°ΡΠ°ΠΌΠΈ Π² ΡΡΠ΅ΡΠ΅ ΠΏΠΎΠ΄Π³ΠΎΡΠΎΠ²ΠΊΠΈ ΡΡΠΊΠΎΠ²ΠΎΠ΄ΡΡΠΈΡ
ΠΊΠ°Π΄ΡΠΎΠ², ΠΎΡΠ²Π΅ΡΠ°ΡΡΠΈΡ
Π·Π° ΡΠ΅Π³ΠΈΠΎΠ½Π°Π»ΡΠ½ΠΎΠ΅ ΡΠ°Π·Π²ΠΈΡΠΈΠ΅, ΡΠ°ΡΡΠΌΠ°ΡΡΠΈΠ²Π°ΡΡΡΡ ΠΎΡΠΎΠ±Π΅Π½Π½ΠΎΡΡΠΈ ΡΠΏΡΠ°Π²Π»Π΅Π½ΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΡΡΠΈΠ»Ρ ΠΈ ΠΏΠΎΠ·ΠΈΡΠΈΠΎΠ½ΠΈΡΠΎΠ²Π°Π½ΠΈΡ Π³ΡΠ±Π΅ΡΠ½Π°ΡΠΎΡΠΎΠ², Π° ΡΠ°ΠΊΠΆΠ΅ Π²Π»ΠΈΡΠ½ΠΈΠ΅ Π΄Π°Π½Π½ΡΡ
ΡΠ°ΠΊΡΠΎΡΠΎΠ² Π½Π° ΡΠΊΠΎΠ½ΠΎΠΌΠΈΡΠ΅ΡΠΊΠΎΠ΅ ΡΠ°Π·Π²ΠΈΡΠΈΠ΅ ΠΈ ΡΠΎΡΠΌΠΈΡΠΎΠ²Π°Π½ΠΈΠ΅ ΠΈΠΌΠΈΠ΄ΠΆΠ° ΡΠ΅Π³ΠΈΠΎΠ½Π°.Π Π΅Π·ΡΠ»ΡΡΠ°ΡΡ. ΠΠ²ΡΠΎΡΠ°ΠΌΠΈ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ ΡΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½ΠΎ, ΡΡΠΎ Π² Π½Π°ΡΡΠΎΡΡΠΈΠΉ ΠΌΠΎΠΌΠ΅Π½Ρ Π² Π ΠΎΡΡΠΈΠΈ Π°ΠΊΡΠΈΠ²Π½ΠΎ ΡΠΎΡΠΌΠΈΡΡΠ΅ΡΡΡ ΠΊΠΎΡΠΏΡΡ Π³ΡΠ±Π΅ΡΠ½Π°ΡΠΎΡΠΎΠ² Β«Π½ΠΎΠ²ΠΎΠΉ Π²ΠΎΠ»Π½ΡΒ», Π΄Π»Ρ ΠΊΠΎΡΠΎΡΡΡ
Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠ½Ρ ΡΠ°ΠΊΠΈΠ΅ ΠΎΡΠΎΠ±Π΅Π½Π½ΠΎΡΡΠΈ ΠΈΠΌΠΈΠ΄ΠΆΠ° ΠΈ ΠΏΠΎΠ²Π΅Π΄Π΅Π½ΠΈΡ, ΠΊΠ°ΠΊ Π°ΠΊΡΠΈΠ²Π½Π°Ρ ΠΊΠΎΠΌΠΌΡΠ½ΠΈΠΊΠ°ΡΠΈΡ Ρ Π½Π°ΡΠ΅Π»Π΅Π½ΠΈΠ΅ΠΌ (Π² ΡΠΎΠΌ ΡΠΈΡΠ»Π΅ ΠΏΠΎΡΡΠ΅Π΄ΡΡΠ²ΠΎΠΌ ΡΠΎΡΠΈΠ°Π»ΡΠ½ΡΡ
ΡΠ΅ΡΠ΅ΠΉ), Π²ΠΎΠ²Π»Π΅ΡΠ΅Π½Π½ΠΎΡΡΡ Π² ΡΠ΅Π°Π»ΠΈΠ·Π°ΡΠΈΡ Π³ΠΎΡΡΠ΄Π°ΡΡΡΠ²Π΅Π½Π½ΠΎΠΉ ΠΏΠΎΠ²Π΅ΡΡΠΊΠΈ ΠΈ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡΡ Π»ΠΎΠ±Π±ΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΠΈΠ½ΡΠ΅ΡΠ΅ΡΠΎΠ² ΡΠ΅Π³ΠΈΠΎΠ½Π°, Π³ΠΎΡΠΎΠ²Π½ΠΎΡΡΡ ΠΊ Π±ΡΡΡΡΠΎΠΉ ΡΠ΅Π°ΠΊΡΠΈΠΈ Π½Π° ΡΠΎΠ±ΡΡΠΈΡ ΠΈ ΠΎΠ±ΡΠ°ΡΠ΅Π½ΠΈΡ, Π²ΠΊΠ»ΡΡΠ΅Π½Π½ΠΎΡΡΡ Π² ΡΠ΅ΡΠ΅Π½ΠΈΠ΅ Π²ΠΎΠΏΡΠΎΡΠΎΠ², ΡΠ²ΡΠ·Π°Π½Π½ΡΡ
Ρ Π‘ΠΠ.ΠΡΠ²ΠΎΠ΄Ρ. Π ΠΊΠ°ΡΠ΅ΡΡΠ²Π΅ ΠΏΡΠΈΠΌΠ΅ΡΠ° ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΠ³ΠΎ ΠΏΡΠΎΡΠ²Π»Π΅Π½ΠΈΡ Π»ΠΈΠ΄Π΅ΡΡΡΠ²Π° Π³Π»Π°Π²Ρ ΡΠ΅Π³ΠΈΠΎΠ½Π° ΡΠ°ΡΡΠΌΠ°ΡΡΠΈΠ²Π°Π΅ΡΡΡ ΡΡΠΈΠ»Ρ ΡΡΠΊΠΎΠ²ΠΎΠ΄ΡΡΠ²Π° Π³ΡΠ±Π΅ΡΠ½Π°ΡΠΎΡΠ° ΠΠΌΡΠΊΠΎΠΉ ΠΎΠ±Π»Π°ΡΡΠΈ Π. Π. Π₯ΠΎΡΠ΅Π½ΠΊΠΎ
Brain biopsy for diagnosis of chlamydia encephalitis
This is the case of encephalitis associated with chlamydia infection of central nervous system. The diagnostic protocol of the patient included: a careful observation of somatic and neurological status, laboratory tests of blood and cerebrospinal fluid, neurovisualization. The results of the diagnostic protocol suggest that laboratory tests blood and cerebrospinal fluid possess low sensitivity and specificity. The MRI study has revealed the localization and inflammatory character of the changes in brain tissue; it has also helped to choose the most favorable area for the stereotaxic biopsy. The obtained tissue was evaluated by means of light (immunohistochemistry) and electronic microscopy. The active chlamydia infection was estimated. The subsequent antibacterial etiotropic therapy resulted in the regression of the neurologic symptoms and remission.The intravitalpathomorphology study of the brain could be recommended for the management of the severe encephalitis of the unknown origin
Laboratory Analysis of the Anti-Infectious Activity of Quantum Dots and Bioconjugates Based on Them in the Aspect of the Prospects for the Treatment of Inflammatory Diseases of the Eye. Experimental Research (Part 3)
This article presents the third part of an experimental study on the prospects and possibilities of using quantum dots and bioconjugates created on their basis in the treatment of inflammatory diseases of the eye. Taking into account the previously obtained results on the possibility of βsafeβ use of CdTe/Cd and InP/ZnSe/ZnS quantum dots on an animal model under conditions of intravitreal administration, the aim of the current stage was to analyze their antimicrobial activity in a bacteriological laboratory. Materials and methods. As QDs, we took two types of artificial fluorophores capable of generating superoxide radicals synthesized according to a special technical assignment at the Federal State Unitary Enterprise βResearch Institute of Applied Acousticsβ, Dubna, Moscow Region: type 1 - colloidal solution of QD CdTe/Cd MPA 710 10 % of the mass. Type 2 - colloidal solution of QD InP/ZnSe/ZnS 650 10 % wt. The study included βmuseumβ and nosocomial strains of microorganisms, and the activity of points was assessed using the disk-diffusion method, followed by an assessment of the zones of inhibition of bacterial growth. Concentrations of 0.1 %, 0.01 %, and 0.001 % quantum dots were tested, as well as solutions of bioconjugates (antibiotic + quantum dots) of Vancomycin, Levofloxacin, Ceftazidime and Cefotaxime. Results. Based on the data obtained, it was concluded that quantum dots potentiate the action of the sensitivity of individual microorganisms, both outpatient and hospital strains. Β© 2022 Ophthalmology Publishing Group. All rights reserved
ΠΡΠ΅Π½ΠΊΠ° ΠΎΡΡΠ°Π»ΡΠΌΠΎΡΠΎΠΊΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ Π²ΠΎΠ·Π΄Π΅ΠΉΡΡΠ²ΠΈΡ ΠΊΠ²Π°Π½ΡΠΎΠ²ΡΡ ΡΠΎΡΠ΅ΠΊ InP/ZnSe/ZnS 660 ΠΈ Π±ΠΈΠΎΠΊΠΎΠ½ΡΡΠ³Π°ΡΠΎΠ² Π½Π° ΠΈΡ ΠΎΡΠ½ΠΎΠ²Π΅ Π² Π°ΡΠΏΠ΅ΠΊΡΠ΅ ΠΏΠ΅ΡΡΠΏΠ΅ΠΊΡΠΈΠ² Π»Π΅ΡΠ΅Π½ΠΈΡ ΡΠ΅Π·ΠΈΡΡΠ΅Π½ΡΠ½ΡΡ ΡΠ½Π΄ΠΎΡΡΠ°Π»ΡΠΌΠΈΡΠΎΠ². ΠΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ°Π»ΡΠ½ΠΎΠ΅ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅. Π§Π°ΡΡΡ 2 (1-ΠΉ ΡΡΠ°ΠΏ)
The problem of chemo/antibiotic resistance in modern medicine remains relevant today. The sensitivity of microorganisms (MO) determines the range of drugs used, which ultimately affects the effectiveness of treatment and the prognosis for the patient. However, taking into account the adaptation process of individual strains of MO, the uncontrolled use of antibiotics will inevitably lead to the maintenance of the so-called crisis of antibiotic resistance throughout the world, as well as the formation of a vicious circle that reduces the functional and anatomical outcomes of the treatment of any inflammatory diseases, including ophthalmological ones. This article presents the process of experimental creation and certification, assessment of the physicochemical properties of quantum dots, as well as biological nanoconjugates as an option for overcoming the antibiotic resistance of certain strains of microorganisms in the treatment of infectious and inflammatory pathology in ophthalmology, in particular endophthalmitis. Also, an animal model has demonstrated the safety of using InP / ZnSe / ZnS 660 quantum dot solutions for intravitreal administration in pure form and in combination with antibiotics. Β© 2021 Ophthalmology Publishing Group. All rights reserved
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