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Journal articles on the topic 'Impulse sealing'

Author: Grafiati

Published: 28 May 2022

Last updated: 30 July 2025

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1

Shevchenko, S., and O. Shevchenko. "Improvement of Reliability and Ecological Safety of NPP Reactor Coolant Pump Seals." Nuclear and Radiation Safety, no. 4(88) (December 11, 2020): 47–55. http://dx.doi.org/10.32918/nrs.2020.4(88).06.

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The paper presents the analysis of existing designs of NPP reactor coolant pumps (RCP) rotor sealing systems. The most common design solutions of sealing units that provide the necessary tightness, reliability and service life under high pressure, temperature and sliding speeds typical for RCP, as well as trends for their improvement to increase tightness and environmental safety of activities were identified. Designs of impulse seals with a self-adjusting clearance are presented as the most promising assemblies for sealing pump shafts with high parameters. A computer model of impulse me

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2

Antipina, E. S., G. V. Kukinova, and V. M. Antipin. "Impulse Rotors on Sealing Rollers." IOP Conference Series: Materials Science and Engineering 753 (March 7, 2020): 022044. http://dx.doi.org/10.1088/1757-899x/753/2/022044.

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3

Kuznetsov, Eduard, and Iveta Pandová. "Calculation of the Operational Characteristics of the Impulse Gas-Barrier Face Seal." Management Systems in Production Engineering 31, no. 4 (2023): 411–17. http://dx.doi.org/10.2478/mspe-2023-0046.

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Abstract The problem of reducing leaks along the pump or compressor shaft of pumped liquids and gases into the environment is very urgent. Serious difficulties have to be faced when sealing the shafts of machines that pump aggressive, toxic, explosive and fire-hazardous environments. According to modern occupational safety requirements, such pumps and compressors should use double seals with a barrier medium whose pressure exceeds the sealed one by 0.05-0.2 MPa. Currently, liquid-lubricated double mechanical seals are widely used in chemical production equipment, however, over the last decade

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4

Kundera, Czeslaw, and Volodymyr Martsynkovskyy. "Proposal to Improve the Design of the Impulse Face Seal." Applied Mechanics and Materials 630 (September 2014): 277–82. http://dx.doi.org/10.4028/www.scientific.net/amm.630.277.

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The paper describes the construction and operating principle of the non-contacting impulse face seal. A mathematical model of the impulse seal was formulated. The method of control of the opening force by change of the cavity volume within sealing gap was described. The results obtained from the numerical calculations prove that the effect of the cavity volume on the axial vibrations of the flexibly mounted ring.

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5

Shevchenko, Serhii S. "General Approach to Modeling of Non-Contact Seals and Their Effect on the Dynamics of a Centrifugal Machine Rotor." Journal of Mechanical Engineering 25, no. 1 (2022): 32–39. http://dx.doi.org/10.15407/pmach2022.01.032.

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There is a constant demand for higher equipment parameters, such as pressure of a sealing medium and shaft rotation speed. However, as the parameters rise it becomes more difficult to ensure hermetization efficiency. Moreover, sealing systems affect the overall operational safety of the equipment, especially vibratory. Non-contact seals are considered as hydrostatodynamic supports that can effectively damp rotor oscillations. Models of an impulse and a groove seals, models of rotor-seals system and rotor-auto-unloading system, model of a shaftless pump are studied to evaluate an effect of thes

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6

Shevchenko, O. S., and S. S. Shevchenko. "Ways to improve seals to increase operational safety of NPP pumps." Reporter of the Priazovskyi State Technical University. Section: Technical sciences, no. 41 (December 24, 2020): 145–54. https://doi.org/10.31498/2225-6733.41.2020.226199.

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. The sealing unit is a complex system, on which reliability, safety and durability of the pump unit is largely depend. An analysis of the existing designs of sealing units for nuclear power plants (NPP) pumps was carried out, which showed that the most widespread were hydrostatic and mechanical face seals with improved lubrication conditions. Hydrostatic seals are used as main seals for throttling high pressure. Mechanical face seals, due to their low leakage, are mainly used as closing seals. The most promising areas of sealing units design for NPP pumps have been identified. It has been det

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7

Yu, Zidong, Serhii Shevchenko, Mykola Radchenko, Oleksandr Shevchenko, and Andrii Radchenko. "Methodology of Designing Sealing Systems for Highly Loaded Rotary Machines." Sustainability 14, no. 23 (2022): 15828. http://dx.doi.org/10.3390/su142315828.

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Higher parameters of centrifugal machines are constantly required, such as the pressure of the medium to be sealed and the speed of rotation of the shaft. However, as the parameters increase, it becomes more and more difficult to ensure the effectiveness of sealing. In addition, sealing systems affect the overall safety of equipment operation, especially vibration. In order to harmonize the sealing functions and increase the dynamic rigidity of the rotors of centrifugal machines, a method for modeling complex sealing systems has been developed. Non-contact seals are considered as hydrostatic–d

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8

Kim, Insoo, Sung Min Kim, and Jongchul Seo. "Development of Temperature Controlled Impulse Sealer for Preventing Cumulative Heat and Improving Sealing Quality." KOREAN JOURNAL OF PACKAGING SCIENCE AND TECHNOLOGY 25, no. 3 (2019): 117–23. http://dx.doi.org/10.20909/kopast.2019.25.3.117.

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9

Dewi, Marysca Shintya, Linda Marlinda, and Komarudin Komarudin. "Decision-Making Framework Using MARCOS for Evaluating Sealing Machines in Small and Medium Enterprises." sinkron 9, no. 1 (2025): 462–75. https://doi.org/10.33395/sinkron.v9i1.14367.

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In the era of globalization, Micro, Small, and Medium Enterprises (MSMEs) hold a vital position in Indonesia's economy, contributing significantly to GDP and employment. Despite their importance, MSMEs need help in selecting appropriate sealer machines, which affects production efficiency and product quality. There are six different kinds of sealer machines that are looked at in this study. They are manual, vertical, continuous, horizontal semi-automatic, impulse, and vacuum. The MARCOS method is used to find the best option. Results indicate that the Impulse Sealer Machine (A5) is the most su

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10

Blasiak, Slawomir. "Numerical modeling and analysis of the noncontacting impulse gas face seals." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 233, no. 8 (2018): 1139–53. http://dx.doi.org/10.1177/1350650118817188.

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Noncontacting mechanical seals with various kinds of face surface modifications have established their position in the sealing technique. Over the last few years, a lot of works dedicated to the impact of various surface modifications on the dynamics of working rings have been created. This paper presents model studies regarding relatively unknown noncontacting impulse gas face seals. Here, a mathematical model of impulse gas face seals is developed including the nonlinear Reynolds equation and stator dynamics equations, which were solved simultaneously using numerical methods. An original com

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11

Cho, Sung-Woo, Henrik Ullsten, Mikael Gällstedt, and Mikael S. Hedenqvist. "Heat-Sealing Properties of Compression-Molded Wheat Gluten Films." Journal of Biobased Materials and Bioenergy 1, no. 1 (2007): 56–63. http://dx.doi.org/10.1166/jbmb.2007.1978.

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The impulse heat-sealing properties of wheat gluten films were investigated. Films containing 30 wt% glycerol were compression molded at 100–130 °C and then sealed in a lap-shear or peel-test geometry at 120–175 °C. The tensile properties of the pristine films and the lap-shear and peel strength of the sealed films were evaluated and the seals were examined by scanning electron microscopy. Glycerol was added to the film surfaces prior to sealing in an attempt to enhance the seal strength. It was observed that the wheat gluten films were readily sealable. At a 120 °C sealing temperature and wit

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12

Olena, Han, Boiko Viktor, Kravets Viktor, and Han Anatolii. "FORMATION OF PARAMETERS OF FOAMED EXPLOSIVE MIXTURES FOR SEALING SOILS." ScienceRise, no. 5 (October 31, 2020): 6–12. https://doi.org/10.21303/2313-8416.2020.001430.

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Significant growth rates of construction require large areas prepared in advance. Given the complexity and large scale of construction on subsidence soils, an important issue remains their compaction. On the article, on the parameters of the explosion momentum of TNT-free explosive compositions based on ammonium nitrate (AN) and after ultrasonic treatment of ammonium nitrate were analytically investigated, and their comparison with ammonite №6 and igdanite was also compared. The principles of explosive pulse control by regulating the content and density of explosives due to ultrasonic radiatio

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13

HUI, Weidong, Guojun YAN, Serhii S. SHEVCHENKO, Maryna S. SHEVCHENKO, Taras V. HUMENIUK, and Nadiia H. BUZOVERIA. "General approach to the construction of non-contact seals dynamic characteristics." Proceedings of the Romanian Academy, Series A: Mathematics, Physics, Technical Sciences, Information Science 25, no. 4 (2024): 325–34. https://doi.org/10.59277/pra-ser.a.25.4.09.

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Higher parameters of centrifugal machines are constantly required, such as the pressure of the medium to be sealed and the speed of rotation of the shaft. However, as the parameters increase, it becomes more and more difficult to ensure the effectiveness of sealing. In addition, sealing systems affect the overall safety of equipment operation, especially vibration. Non-contact seals are considered as hydrostatic-dynamic bearings that can effectively dampen rotor oscillations. Models of “rotor-gap seals” system and impulse seals have been studied to assess the effect of these seal systems on th

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14

Zafar, Mohammad, Philip Pang, Glen Henry, Bulat Ziganshin, Maryann Tranquilli, and John Elefteriades. "Early Spontaneous Resolution of an Iatrogenic Acute Type A Aortic Dissection." AORTA 04, no. 06 (2016): 235–39. http://dx.doi.org/10.12945/j.aorta.2016.16.067.

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AbstractAcute aortic dissection is a rare but devastating complication during cardiac catheterization. We present the case of an elderly female who incurred a Stanford Type A/DeBakey Type I acute aortic dissection extending into the arch vessels and descending aorta likely occurring during right coronary artery engagement for angioplasty. The patient was treated successfully by immediately sealing the entrance of the dissection via the placement of a stent and anti-impulse therapy. Follow-up computed tomography scan showed complete resolution of the dissection within one month.

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15

Khabibullin, Marat Ya. "To the issue of optimizing the application of the sealing equipment in the injection well at the long-term pulsed water injection into it." Oil and Gas Studies, no. 3 (July 10, 2019): 77–85. http://dx.doi.org/10.31660/0445-0108-2019-3-77-85.

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When determining the operability of the sealing elements, it is necessary to take into account the overall movement of the packer during operation, which it passes before the damage of the sealing elements when fixing the leakage failure in the annulus. It should be noted that as the frequency and the amplitude of the pressure of injected liquid pulses increase, the distance travelled increases proportionately. According to preliminary calculations, the average leakage volumes of injected fluids are in the range 0,005 ... 0,1 cm3/m2 with the prevalence of possible leakages at the level of 0,05

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16

Mykhailovska, Olena, and Veniamin Soloviev. "Dependence of the plastic rocks properties on the pressure change in the well." Academic journal Industrial Machine Building Civil Engineering 2, no. 59 (2022): 92–97. https://doi.org/10.26906/znp.2022.59.3105.

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Experimental studies of changes in rock properties depending on the pressure in the well and in the massif of the plastic layer at different distances from the well over time were carried out. The function demonstrates the power dependence of the pressure ratio at the moment of time on the geostatic pressure. After sealing the well, the pressure in the massif of the plastic formation increases in the near-well zone and decreases in the peripheral zone. Over time, the pressure in the massif of the plastic layer is equalized over the entire area of the layer. Pressure changes in a plastic rock h

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17

Götz, Georg, Peter Stich, Sven Thunig, Johannes Glasschröder, and Gunther Reinhart. "Improving Resource and Energy Efficiency of Packaging Machines: Contribution of an Increasing Format Flexibility." Applied Mechanics and Materials 805 (November 2015): 257–64. http://dx.doi.org/10.4028/www.scientific.net/amm.805.257.

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Manufacturers and users of packaging machines are facing two significant challenges: the improvement of the sustainability and the enhancement of the format flexibility. The sustainability of products is becoming a more important influencing factor for the consumer buying behavior. Therefore, the increase of the energy and resource efficiency of packaging machines is a very promising strategy to achieve this goal. At first glance no correlation between format flexibility and sustainability seems to exist. But in fact, both topics partly depend on each other. These connections are the focus of

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18

Trubin, A. S., and Yu N. Baranov. "Analytical description breaker drives and its indicators economy of energy conversion." Nauchno-tekhnicheskiy vestnik Bryanskogo gosudarstvennogo universiteta 8, no. 2 (2022): 150–58. http://dx.doi.org/10.22281/2413-9920-2022-08-02-150-158.

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The issues of optimizing the parameters of a hydraulic hammer on the basis of differentiating a complex impulse system into subsystems by drawing up differential equations for all bodies participating in motion and using the theorem on changing the kinetic energy and momentum are considered. It has been established that the force of fluid pressure is the main source of friction in the sealing unit, the value of which depends on the pressure of the working medium, the coefficient of friction of the cuff material and the size of the contact surface of the seal. The research results can be used i

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19

Knoll, G., H. Peeken, R. Lechtape-Gru¨ter, and J. Lang. "Computer-Aided Simulation of Piston and Piston Ring Dynamics." Journal of Engineering for Gas Turbines and Power 118, no. 4 (1996): 880–86. http://dx.doi.org/10.1115/1.2817009.

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A numerical computer simulation program was developed, aiding in finding optimum design parameters in the multibody-system piston, piston-rings, and cylinder with respect to optimum sealing, minimal friction, and minimum noise stimulation (impact impulse). In the simulation of piston secondary movement and piston ring motion, forces arising from the combustion process, subsonic/supersonic gas flow between the combustion chamber and the crank case, inertial forces and forces resulting from the hydrodynamic lubrication between cylinder liner and piston shaft and piston rings and between piston r

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20

Hartline, Daniel K. "What is myelin?" Neuron Glia Biology 4, no. 2 (2008): 153–63. http://dx.doi.org/10.1017/s1740925x09990263.

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The evolution of a character is better appreciated if examples of convergent emergence of the same character are available for comparison. Three instances are known among invertebrates of the evolution of axonal sheaths possessing the functional properties and many of the structural properties of vertebrate myelin. Comparison of these invertebrate myelins raises the question of what structural features must a sheath possess in order to produce the two principal functional characteristics of impulse speed enhancement and energy savings. This essay reviews the features recognized by early worker

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21

Borgens, Richard B., Riyi Shi, and Debra Bohnert. "Behavioral recovery from spinal cord injury following delayed application of polyethylene glycol." Journal of Experimental Biology 205, no. 1 (2002): 1–12. http://dx.doi.org/10.1242/jeb.205.1.1.

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SUMMARY Topical application of the hydrophilic polymer polyethylene glycol (PEG) to isolated adult guinea pig spinal cord injuries has been shown to lead to the recovery of both the anatomical integrity of the tissue and the conduction of nerve impulses through the lesion. Furthermore, a brief (2 min) application of the fusogen (Mr 1800, 50 % w/v aqueous solution) to the exposed spinal cord injury in vivo can also cause rapid recovery of nerve impulse conduction through the lesion in association with functional recovery. Behavioral recovery was demonstrated using a long-tract, spinal-cord-depe

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22

Borgens, Richard B. "Cellular Engineering: Molecular Repair of Membranes to Rescue Cells of the Damaged Nervous System." Neurosurgery 49, no. 2 (2001): 370–79. http://dx.doi.org/10.1097/00006123-200108000-00021.

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Abstract PURPOSE The acute administration of hydrophilic polymers (polyethylene glycol) can immediately seal nerve membranes, preventing their continuing dissolution and secondary axotomy. Polymer application can even be used to reconnect, or fuse, the proximal and distal segments of severed axons in completely transected adult mammalian spinal cord. CONCEPT The sealing or fusion of damaged nerve membranes leads to a very rapid (minutes or hours) recovery of excitability in severely damaged nerve fibers, observed as a rapid return of nerve impulse conduction in vitro, as well as an in vivo rec

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23

Kröhnert, Kevin, M. Wöhrmann, N. Jürgensen, et al. "Through Glass Vias for hermetically sealed High Frequency Application." Additional Conferences (Device Packaging, HiTEC, HiTEN, and CICMT) 2019, DPC (2019): 000125–40. http://dx.doi.org/10.4071/2380-4491-2019-dpc-presentation_ta1_011.

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In this work we demonstrate the fabrication and use of a glass interposer platform with Through Glass Vias (TGVs) for high frequency applications. The platform is part of a versatile hermetically sealed glass package including passive and active devices (radar sensor, pressure sensors, infrared sensors). Glass has ideal properties for such applications, like excellent chemical resistance, mechanical strength and low costs. The hermetic sealing allows the seamless operation in hazardous environments. The TGVs may be deployed, for instance, in miniaturized sensor systems as vertical DC and RF in

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24

Heranin, S. I. "Consequences of the overfilling in endodontic practice. Periapical reaction and potential complications." Kharkiv Dental Journal, no. 1 (June 28, 2024): 48–64. https://doi.org/10.26565/3083-5607-2024-1-06.

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Background. Root canal filling is an important part of successful endodontic treatment. Hermetic apical sealing prevents apical leakage and the occurrence or recurrence of apical periodontitis. However, possible errors in chemo-mechanical preparation and obturation of root canals can lead to the risk of extrusion of materials beyond the apical foramen. The article gives a literature review on risk factors, complications during extrusion of sealer on the upper and lower jaw and ways to eliminate them, as well as clinical cases on the topic of the article. Aim – this literature review and keys r

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25

Доброхотов, Юрий, Yuriy Dobrohotov, Юрий Иванщиков, et al. "ANALYSIS OF THE INFLUENCE OF THE CHECK VALVE FORM ON THE FUEL-SUPPLY PROCESS IN THE DISTRIBUTION TYPE PUMPS." Vestnik of Kazan State Agrarian University 14, no. 2 (2019): 88–94. http://dx.doi.org/10.12737/article_5d3e16a9e13528.77117651.

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The stability of the values of cyclic feeds and the angle of the actual beginning of the fuel supply largely depends on the presence of the injection valve of the fuel pump section and its design features. The valve must reliably separate the discharge line from the pre-plunger space and, within certain limits, ensure the residual pressure in the discharge line between cycles. However, the installation of the valve causes a repeated reflection from the valve of the pressure impulses, that follow from the nozzle and leads to the appearance of additional injections or a sluggish fit of the needl

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26

Dionysopoulos, Dimitrios, Olga Gerasimidou, and Charis Beltes. "Dentin Hypersensitivity: Etiology, Diagnosis and Contemporary Therapeutic Approaches—A Review in Literature." Applied Sciences 13, no. 21 (2023): 11632. http://dx.doi.org/10.3390/app132111632.

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The aim of this review was to provide dentists with comprehensive information regarding dentin hypersensitivity. This includes presenting its etiology, outlining the process of diagnosis, discussing clinical management strategies, and exploring technical approaches aimed at alleviating sensitivity. Dentin hypersensitivity is characterized by distinctive short, sharp pain arising from exposed cervical dentin in response to various external stimuli. The etiological factors cause two specific changes in teeth. First, the dentin surface must be exposed and denuded, which requires the loss of ename

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27

Lo, Pei-Chen, and Wu Jue Miao Tian. "NEUROCARDIAC-CARDIORESPIRATORY INTERACTION OF HEART-BRAIN MAILUNS SYNCHRONY AT DEEP ZEN MEDITATION." Biomedical Engineering: Applications, Basis and Communications 28, no. 06 (2016): 1650039. http://dx.doi.org/10.4015/s1016237216500393.

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Innovatively new behaviors of heart rate variability caused by special heart-transition process were observed in the long-term, well-experienced Zen practitioners while practicing the heart-to-heart imprint sealing (HHIS) Zen meditation. HHIS Zen practice involves specific neurocardiac-cardiorespiratory interaction while on the way of realizing the heart-dominant, detached brain. Results of analyzing the electrocardiogram and respiratory signals of 10 experienced practitioners reveal several distinctive characteristics: (1) remarkably linear correlation between standard deviation of the normal

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28

Arkæologisk Selskab, Jysk. "Anmeldelser 2011." Kuml 60, no. 60 (2011): 297–380. http://dx.doi.org/10.7146/kuml.v60i60.24508.

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Angelika Abegg-Wigg und Andreas Rau (red.): Aktuelle Forschungen zu Kriegsbeuteopfern und Fürstengräbern im Barbaricum.(Lotte Hedeager)Christian Adamsen, Ulla Lund Hansen, Finn Ole Nielsen och Margarethe Watt (red.): Sorte Muld.(Birgitta Hårdh)Michael Andersen og Poul Otto Nielsen (red.): Danefæ. Skatte fra den danske muld.(Lars Krants Larsen)Liv Appel & Kjartan Langsted (red.): Ressourcer og kulturkontakter. Arkæologi rundt om Skagerrak og Kattegat.(Jette Linaa)Ute Arents & Silke Eisenschmidt: Die Gräber von Haithabu.(Charlotte Hedenstierna-Jonson)Jan Albert Bakker: Megalithic Researc

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29

Kovalev, Yu D. "MODELING OF IMPULSE EXCITATION OF A LAYER WEAKENED BY A THROUGH HOLE (SKEW-SYMMETRIC CASE)." KIBERNETYKA TA SYSTEMNYI ANALIZ, 2025, 191–98. https://doi.org/10.34229/kca2522-9664.25.2.16.

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The paper considers a new mathematical model for solving a dynamic (shock) skew-symmetric boundary value problem for a layer weakened by a through hole with sliding sealing of its ends. A new method based on the system of three singular integral equations was developed and tested numerically. A7nbsp;highly accurate numerical study demonstrated that the relative circumferential stress increases with an increase in the impulse length. Short impulses result in a wave-like fading process — in the е-neighborhood of the origin, due to the inertia of the system, a zone of negative stresses appears, w

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30

Lu, Congxiang, Serhii Shevchenko, Volodymyr Geichuk, Mykola Korchak, and Andrii Topalov. "Research on Improving Seals to Suppress Vibration of Rotary Machines." Proceedings of the Bulgarian Academy of Sciences 77, no. 6 (2024). http://dx.doi.org/10.7546/crabs.2024.06.11.

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There is a constant demand for higher equipment parameters, such as pressure of a sealing medium and shaft rotation speed. However, as the parameters rise it becomes more difficult to ensure hermetization efficiency. Moreover, sealing systems affect the overall operational safety of the equipment, especially vibratory. Non-contact seals are considered hydrostatodynamic supports that can effectively damp rotor oscillations. Models of an impulse and a groove seals, models of rotor-seals system and rotor-auto-unloading system, models of a shaftless pump are studied to evaluate the effect of these

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31

Sherman, Ronald Arlen, and Frank Stadler. "Expanding access to maggot containment dressings through redesign and innovation." International Wound Journal 22, no. 1 (2025). https://doi.org/10.1111/iwj.70100.

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AbstractThere are two major styles of maggot debridement dressings: (1) confinement dressings that form a cage around the wound, and (2) containment dressings that completely surround the maggots within a sealed porous bag. For producers and clinicians wanting to prepare containment dressings using readily available polyester bags, it is currently difficult to seal these bags without expensive high‐temperature plastic welders. This study aimed to identify simple and affordable methods for sealing maggots within polyester net bags. Heat sealing was the most effective and simplest method to seal

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32

KUZNETSOV, EDUARD, ANTON PANDA, and VOLODYMYR NAHORNYI. "MATHEMATICAL MODEL OF THE WORKING PROCESS OF AN IMPULSE TYPE OF GAS BARRIER FACE SEAL." MM Science Journal 2025, no. 2 (2025). https://doi.org/10.17973/mmsj.2025_06_2025024.

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This article provides a mathematical description of the working process of a promising gas seal, which operates with performance characteristics similar to those of the latest gas-dynamic seals but uses a completely different principle of creating the gas barrier, preventing leakage of the pumped product from the pump at the outlet its rotating rotor from the casing. The proposed mathematical dependencies make it possible to calculate the geometric parameters of the sealing rings, which are the main working components of the seal, and to determine the static and dynamic characteristics of the

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33

Tarnawski, Piotr. "The hybrid concept of turboshaft engine working according to Humphrey cycle dedicated to variety power demand – CFD analysis." Combustion Engines, May 18, 2023. http://dx.doi.org/10.19206/ce-162763.

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The paper presents a new concept of the turbine engine in the area of pressure gain combustion (PGE). The engine works according to Humphrey’s cycle. Minor modification in construction has allowed power generation of 500 kW, 700 kW, 1000 kW, and 1800 kW. The concept successfully resolved the challenges related to the temporary opening and closing of the combustion chamber. The presented valve timing system has ensured effective gas flow and what stands behind it, an effective process of conversion of a high-pressure gas impulse into mechanical energy. Rotating combustion chambers enabled the a

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34

Ito, Yusuke, Toru Seo, Yoshiyuki Sasano, Fumihiro Mochizuki, and Izumi Koizuka. "Perilymphatic fistula with characteristic findings of the inner ear by contrast-enhanced magnetic resonance imaging: a case report." Frontiers in Neurology 14 (October 19, 2023). http://dx.doi.org/10.3389/fneur.2023.1276991.

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A perilymphatic fistula (PLF) presents with abnormal traffic in the otic capsule, causing cochlear and vestibular symptoms. However, the mechanisms underlying symptom recurrence remain controversial. Herein, we report the case of a 27-year-old female who complained of hearing disturbance in her right ear and recurrent vertigo after sudden onset of hearing loss with vertigo. The caloric test revealed unilateral weakness in the right ear, and the video head impulse test (vHIT) showed decreased vestibulo-ocular reflex (VOR) gain. Contrast-enhanced magnetic resonance imaging (MRI) using hybrid of

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35

Podpriatov, S. S., S. E. Podpryatov, S. G. Gichka, et al. "Tissue structural phases of gut anastomosis formation by radiofrequent electric welding supply." November 30, 2018. https://doi.org/10.5281/zenodo.2562223.

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Podpriatov S. S., Podpryatov S. E., Gichka S. G., Marinsky G. S., Chernets O. V., Tkachenko V. A., Grabovsky D. A., Lopatkina K. G., Tkachenko S. V. Tissue structural phases of gut anastomosis formation by radiofrequent electric welding supply. Journal of Education, Health and Sport. 2018;8(11):635-642. eISNN 2391-8306. DOI http://dx.doi.org/10.5281/zenodo.2562223 http://ojs.ukw.edu.pl/index.php/johs/article/view/6583         The journal has had 7 points in Ministry of Science and Higher Education parametric evaluation. Part b item 1223 (26/01/2017). 1223 Journal of Educati

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