Effect Of Electrostatic Field Research Articles

Investigating the effect of electrostatic field on electronic structures of C58N2 molecules from SCC-DFTB simulations

Self-consistent charge density functional tight-binding simulations are performed to investigate the effect of externally electrostatic field on nitrogen-doped fullerene C58N2 molecules. Based on the obtained geometric structures of twenty-three C58N2 configurations, electric field is applied to six selected configurations. We analyze the effects of the direction and strength of the electric field on the HOMO and LUMO energy levels, chemical potential, energy gap, dipole moment, Mulliken populations on atoms, and the variations of molecular orbitals at HOMO and LUMO energy levels of these configurations. The calculation results show that the electric field can change them. The effects of the electric field on the Mulliken charge distribution on the atoms in each configuration present complex patterns, and changing electric field’s direction and strength significantly affect the molecular orbitals. Here, variation of electric field direction can change the phase of molecular orbitals of the configuration having relatively high energy, and the change in the strength of the electric field has a more pronounced effect on the electron distribution at the LUMO levels.

Large‐Scale On‐Chip Integration of Gate‐Voltage Addressable Hybrid Superconductor–Semiconductor Quantum Wells Field Effect Nano‐Switch Arrays

AbstractStable, reproducible, scalable, addressable, and controllable hybrid superconductor–semiconductor (S–Sm) junctions and switches are key circuit elements and building blocks of gate‐based quantum processors. The electrostatic field effect produced by the split gate voltages facilitates the realization of nano‐switches that can control the conductance or current in the hybrid S–Sm circuits based on 2D semiconducting electron systems. Here, a novel realization of large‐scale scalable, and gate voltage controllable hybrid field effect quantum chips is experimentally demonstrated. Each chip contains arrays of split gate field effect hybrid junctions, that work as conductance switches, and are made from In0.75Ga0.25As quantum wells integrated with Nb superconducting electronic circuits. Each hybrid junction in the chip can be controlled and addressed through its corresponding source–drain and two global split gate contact pads that allow switching between their (super)conducting and insulating states. A total of 18 quantum chips are fabricated with 144 field effect hybrid Nb‐ In0.75Ga0.25As 2DEG‐Nb quantum wires and the electrical response, switching voltage (on/off) statistics, quantum yield, and reproducibility of several devices at cryogenic temperatures are investigated. The proposed integrated quantum device architecture allows control of individual junctions in a large array on a chip useful for emerging cryogenic quantum technologies.

Effects of electrostatic field-assisted freezing on the functional properties and aggregation behavior of gluten

Changes in gluten during the freezing process could cause a deterioration in dough quality, which would be solved by electrostatic field treatment. This paper investigated the effects of electrostatic field assisted freezing (EFAF) on the functional properties, structural characteristics and aggregation behavior of gluten. The results showed that EFAF improved the functional properties of gluten with enhanced water holding, emulsifying and foaming properties. When the electrostatic field was applied, the α-helix content and g-g-g conformation of gluten proteins increased with a maximum of 27.50 % and 40.05 %, respectively, which were significantly different from the control (P < 0.05). The degree of depolymerization of gluten macromolecules decreased when the electrostatic field was applied, and was obtained to be the lowest at 600 V with 5.71 %, which was significantly different from that without applied electrostatic field (P < 0.05). After EFAF, AFM analysis showed a more intact glutenin chain structure and smaller particle size of the gliadin. These results indicated that EFAF improved the functional properties of gluten proteins by the mechanism of slowing down the depolymerization of gluten macromolecules, maintaining the chain structure of gluten, stabilizing the intramolecular disulfide bonds of gliadin, and stabilizing the microstructure of gluten.

Linear instability of a two-dimensional viscoelastic liquid film under the coupling effect of electrostatic field and parametric resonance

A two-dimensional temporal linear instability analysis is performed for a charged liquid viscoelastic film on a vertically oscillating plane in the presence of an electrostatic field. The viscoelastic fluid, described by the Oldroyd-B model, is intended to be a Taylor–Melcher leaky dielectric, while the ambient gas is treated as perfectly dielectric. Results show that the oscillations induce parametric unstable regions. The parametric unstable regions can be superimposed on the inherent unstable region when the oscillation frequency is small because the frequency in the inherent unstable region is non-zero. The electric field has a complex effect on both inherent and parametric instabilities. The effect of the electrical relaxation time is dominated by the electrical Bond number and dimensionless distance. The relative permittivity has a destabilizing effect. However, the effects of electrical relaxation time and relative permittivity in the parametric unstable region are negligible. The viscosity and elasticity have non-monotonic effects on the inherent instability but have a monotonous effect on the parametric instability. The increase in Bond number has a stabilizing effect. The effect of density ratio is not constant in the inherent unstable region according to the electrical Bond number and Bond number. However, the increase of density ratio has a monotonously stabilizing effect on the parametric instability.

Valorization of meat and bone residue by ultrasound and high voltage electrostatic field assisted two-stage enzymatic hydrolysis: Nutritional characteristics and flavor analysis

Enzymatic hydrolysis has been used to extract protein and bioactive compounds. Choosing appropriate enzymes can improve the hydrolysis of meat and bone proteins and enhance the flavor of the final product. In this study, the by-products of meat and bone residue after cooking in food processing plants were hydrolyzed by a two-stage method of complex protease (neutral protease, flavor protease and alkaline protease), and the effects of ultrasound (US) and high voltage electrostatic field (HVEF) pretreatment before enzymatic hydrolysis on the nutritional characteristics and flavor of the enzymolysis solution were investigated. The results showed that pretreatment by US alone and combined with US and HVEF could promote proteolysis and increase the content of free amino acids. HVEF pretreatment alone had no significant effect on protein hydrolysis. The enzymatic hydrolysate pretreated by US-HVEF had the strongest umami flavor, the highest flavor nucleotide content and the strongest antioxidant capacity. And electronic nose and GC-MS analysis showed that the combination of US-HVEF pretreatment could enhance the flavor characteristic intensity of enzymatic hydrolysate and increase the volatile compound content, but the compound types decreased slightly. Therefore, physical field pretreatment before enzymatic hydrolysis can help to produce high value-added enzymatic hydrolysis products.

Improvement of the quality of frozen dough for fried flour products by electrostatic field assisted freezing.

With the continuous development of the food industry, frozen dough technology has gradually become an indispensable part of dough processing, but its quality is often reduced due to freezing during the production process. Electrostatic field assisted freezing (EF) technology, as a key research project in recent years, reduces the physical damage of food materials by reducing or changing the size of ice crystals in frozen products. In this study, different intensities of electrostatic fields were used to assist in the repeated freezing and thawing process of dough. The effects of electrostatic fields on the freezing nucleation process were evaluated by measuring dough freezing curves, low field nuclear magnetic resonance, and melting enthalpy. Finally, it was found that the freezing time of frozen dough added with electrostatic field assisted freezing processing was shortened, the decrease rate of hardness, viscosity, and elasticity was reduced, and the indicators of water distribution and protein secondary structure components were closer to those of fresh dough. This experiment used electrostatic field assisted freezing to reduce the damage to the dough structure during the freezing process, improve the quality of frozen dough and fried products, and improve the freezing efficiency of frozen dough. It provides a new idea for the study of frozen dough. This article is protected by copyright. All rights reserved.

Effects of high voltage electrostatic field and weak magnetic field assisted refrigeration on preservation of spinach

Effects of high voltage electrostatic field and weak magnetic field assisted refrigeration on preservation of spinach

Metal Site-Specific Electrostatic Field Effects on a Tricopper(I) Cluster Probed by Resonant Diffraction Anomalous Fine Structure (DAFS).

Studies of multinuclear metal complexes are greatly enhanced by resonant diffraction measurements, which probe X-ray absorption profiles of crystallographically independent metal sites within a cluster. In particular, X-ray diffraction anomalous fine structure (DAFS) analysis provides data that can be interpreted akin to site-specific XANES, allowing for differences in metal K-edge resonances to be deconvoluted even for different metal sites within a homometallic system. Despite the prevalence of Cu-containing clusters in biology and energy science, DAFS has yet to be used to analyze multicopper complexes of any type until now. Here, we report an evaluation of trends using a series of strategically chosen Cu(I) and Cu(II) complexes to determine how energy dependencies of anomalous scattering factors are impacted by coordination geometry, ligand shell, cluster nuclearity, and oxidation state. This calibration data is used to analyze a formally tricopper(I) complex that was found by DAFS to be site-differentiated due to the unsymmetrical influence on different Cu sites of the electrostatic field from a proximal K+ cation.

Understanding the Effect of Internal Electrostatic Fields Created by Alkaline Earth Metal Ions Poised over Secondary Coordination Sphere of Molecular Iron Complexes.

Understanding the effect of the local electrical field around the reaction center in enzymes and molecular catalysis is an important topic of research. Herein, we explored the electrostatic field exerted by the alkaline earth metal ions (M2+ = Mg2+, Ca2+, Sr2+, and Ba2+) around Fe in FeIII(Cl) complexes by experimental and computational investigations. M2+ coordinated dinuclear FeIII(Cl) complexes (12M) were synthesized and characterized by X-ray crystallography and different spectroscopic techniques. EPR and magnetic moment measurements exhibited the presence of high-spin FeIII centers in the 12M complexes. Electrochemical investigations revealed FeIII/FeII reduction potential values shifted anodically in 12M complexes compared to 1. Likewise, 2p3/2 and 2p1/2 peaks in the XPS data were found to shift positively in the 12M complexes, demonstrating that redox-inactive metal ions make FeIII more electropositive. However, nearly similar λmax values in the UV-vis spectra were observed in 1 and 12M complexes. The first-principles-based computational simulations further revealed the impact of M2+ on stabilizing 3d-orbitals of Fe. The distortion in Laplacian distribution (∇2ρ(r)) of electron density around M2+ also indicates the possibility of having Fe-M interactions in these complexes. The absence of a bond critical point between FeIII and M2+ ions in the 12M complexes indicates dominant through-space interaction between these metal centers. Experimental and computational studies collectively imply that the installation of internal electrostatic fields exerted by M2+ ions in 12M complexes alters the electronic structure of FeIII.

The effect of high-voltage electrostatic field on the interactions between duck myofibrillar protein and inulin: An underlying mechanisms study

This study investigated the effect of high-voltage electrostatic field (HVEF) treatment on the interactions between duck myofibrillar protein (MP) and inulin, as well as explored the gel properties of adding inulin to duck MP. Hence, different inulin content (0–30 mg mL−1) were added to duck MP and HVEF treatment was applied in the gelation process.The results revealed that HVEF combined with the addition of 30 mg mL−1 inulin treatment significantly increased (P < 0.05) the water holding capacity and gel strength by 0.20 and 2.61 times, respectively. Moreover, the rheological characteristics and the formation of the three-dimensional network structure was promoted after added inulin and applied HVEF treatment. The HVEF treatment in modifying MP-inulin interaction promoted the conversion of α-helix to β-sheet, β-turn and random coil, significantly increased (P < 0.05) the content of R–SH groups and surface hydrophobicity, thus revealing the underlying mechanisms of the enhancement of duck MP gel performance. Principal component analysis revealed these interrelationships. This data demonstrated that inulin addition combined with HVEF treatment might be a new and effective strategy to enhance the duck MP gel properties.

Investigation of liquid fuel combustion processes in an electrostatic fieldе

Objective. The article presents the results of experimental studies on the effect of a high-potential electrostatic field on the combustion of liquid fuel. Method. Experimental studies were carried out on the developed laboratory installation, which makes it possible to ensure the combustion of liquid fuel in a high-potential electrostatic field with the possibility of changing the polarity. The change in the polarity of the applied voltage to the electrode system of the experimental setup led to an increase in the fuel burning rate in the first case, and to its attenuation in the second.Result. In this paper, studies have been carried out proving the effect of an electrostatic field on the burning rate and reducing the content of harmful components (soot and carbon monoxide) in fuel combustion purges. Based on the values of the fuel burning rate obtained as a result of the experiments, graphic dependences were constructed on the applied voltage, on which the areas of linear and non-linear changes in the combustion parameters were identified.Conclusion. The results of the research carried out can be used to create new highly efficient burners for liquid fuel boilers. The effect of reducing the burning rate can be used to create fire safety devices that block the spread of flame during a fire.

Effect of low voltage electrostatic field combined with partial freezing on the quality and microbial community of large yellow croaker

The effect of low voltage electrostatic field combined with partial freezing (LVEF- PF) treatment on storage quality and microbial community of large yellow croaker was studied. Three different methods including chilled (C), partial freezing (PF) and 6 kV/m electrostatic field combined partial freezing storage were used to preserve large yellow croaker for 18 days. Total viable counts (TVC), sensory evaluation, and physiochemical index including pH, total volatile basic nitrogen (TVB-N), K value and centrifugal loss were examined. During storage, the large yellow croaker was susceptible to microbial growth and spoilage. However, LVEF-PF treatment was found to be effective in enhancing sensory quality, inhibiting microbial growth, and maintaining myofibril microstructure. Low field nuclear magnetic resonance showed that LVEF-PF treatment reduced the migration of immobilized water to free water. At 18th day, the TVC value of LVEF-PF, PF and chilled group were 3.56 log CFU/g, 5.11 log CFU/g, 7.73 log CFU/g, respectively. Therefore, from the results of TVB-N and TVC value, the shelf life of LVEF-PF group was at least 3 days longer than PF group, and 6 days longer than the chilled group. High-throughput sequencing showed that the microbial community diversity significantly decreased during storage. The predominant bacteria in chilled, PF, LVEF-PF group at 18th day were Pseudomonas, Psychrobacter and Shewanella, respectively, and the relative abundance of spoilage bacteria such as Pseudomonas and Psychrobacter were reduced by LVEF-PF treatment, that corresponding with lower values of TVB-N and TVC value. LVEF-PF treatment could be used as a new processing and storage method to delay deterioration and prolong shelf life of large yellow croaker.

Eu3+ Concentration Effects in Phosphate Glasses: An Experimental Study Linking Structural, Thermal, and Optical Properties.

Phosphate glasses incorporating large concentrations of Eu3+ ions are of interest for optical applications as their distinct red-emitting character resists deterioration with increasing Eu3+ content. Still, the low propensity for concentration quenching in these is not well understood, and thus evaluations linking structural, thermal, and optical properties with Eu3+ content are desired. In this work, 50P2O5-(50 - x)BaO-xEu2O3 (x = 0, 1, 2, 4, 6 mol %) glasses pertinent to photonics were prepared by melt-quenching and further scrutinized with regards to the composition-structure-property relationship. A comprehensive experimental investigation was carried out encompassing density and basic physical properties, X-ray diffraction (XRD), Raman scattering, dilatometry, differential scanning calorimetry (DSC), optical absorption, and photoluminescence (PL) spectroscopy with emission decay analysis. The data from six techniques are in strong agreement with the existence of a critical Eu2O3 concentration which divides the studied concentration range into two sections: (1) lower concentrations, up to about 2.5 (±0.1) mol %, with predominantly long-range (LR) effects of the modifier electrostatic field and (2) higher dopant concentrations, with predominantly short-range (SR) effects of the modifier field. The authors propose that LR interactions lead to shortening of the P-tetrahedral chains, while the SR interactions are expressed in increasing the covalent character of the bonds between the nonbridging oxygens and Eu3+ ions. Concentration correlations between diverse macroscopic data sets, such as densitometry, dilatometry, Raman scattering, calorimetry, and PL, concur synergistically, elucidating the microscopic physical LR-SR interplay between glass network former and the cationic electrostatic field of the modifiers.

Effect of Low-Voltage Electrostatic Field on Oxidative Denaturation of Myofibrillar Protein from Lamb-Subjected Freeze–Thaw Cycles

Effect of Low-Voltage Electrostatic Field on Oxidative Denaturation of Myofibrillar Protein from Lamb-Subjected Freeze–Thaw Cycles

Atomistic insight into the effects of electrostatic fields on hydrocarbon reaction kinetics.

Reactive Molecular Dynamics (MD) and Density Functional Theory (DFT) computations are performed to provide insight into the effects of external electrostatic fields on hydrocarbon reaction kinetics. By comparing the results from MD and DFT, the suitability of the MD method in modeling electrodynamics is first assessed. Results show that the electric field-induced polarization predicted by the MD charge equilibration method is in good agreement with various DFT charge partitioning schemes. Then, the effects of oriented external electric fields on the transition pathways of non-redox reactions are investigated. Results on the minimum energy path suggest that electric fields can cause catalysis or inhibition of oxidation reactions, whereas pyrolysis reactions are not affected due to the weaker electronegativity of the hydrogen and carbon atoms. MD simulations of isolated reactions show that the reaction kinetics is also affected by applied external Lorentz forces and interatomic Coulomb forces since they can increase or decrease the energy of collision depending on the molecular conformation. In addition, electric fields can affect the kinetics of polar species and force them to align in the direction of field lines. These effects are attributed to energy transfer via intermolecular collisions and stabilization under the external Lorentz force. The kinetics of apolar species is not significantly affected mainly due to the weak induced dipole moment even under strong electric fields. The dynamics and reaction rates of species are studied by means of large-scale combustion simulations of n-dodecane and oxygen mixtures. Results show that under strong electric fields, the fuel, oxidizer, and most product molecules experience translational and rotational acceleration mainly due to close charge transfer along with a reduction in their vibrational energy due to stabilization. This study will serve as a basis to improve the current methods used in MD and to develop novel methodologies for the modeling of macroscale reacting flows under external electrostatic fields.

Designing of new tetrahydro-β-carboline-based ABCG2 inhibitors using 3D-QSAR, molecular docking, and DFT tools

Human ATP-binding cassette superfamily G member 2 (ABCG2) protein is a member of the ABC transporter family, which is responsible for multidrug resistance (MDR) in cancerous cells. MDR reduces the effectiveness of chemotherapy in breast cancer, which is one of the leading causes of death in women globally. MDR in cancer cells is one of the immediate signs of progression of resistance; thus, various anticancer drugs can be designed. To reduce MDR, we utilized the tetrahydro-β-carboline (THβC) compound library. We accomplished a three-dimensional quantitative structure-activity relationship (3D-QSAR), scaffold hopping to design a new library of compounds of THβC, and further molecular docking, induced-fit docking (IFD), molecular mechanics energies combined with generalized born and surface area continuum solvation (MM-GBSA), drug-like features, ADMET properties, and density functional theory (DFT) studies were performed. From these studies, the best 3D-QSAR model (r2 = 0.99, q2 = 0.92) was found, and the necessity of electrostatic, steric, and hydrophobic field effects were determined that could modulate bioactivity. Moreover, based on electrostatic, steric, and hydrophobic field notations, new THβC derivatives (3409) were designed. These findings might provide new insight for researchers to perform in vitro and in vivo studies for better antagonists against MDR in treating breast cancer.Communicated by Ramaswamy H. Sarma

Effects of high-voltage electrostatic field (HVEF) on frozen shrimp (Solenocera melantho) based on UPLC-MS untargeted metabolism

Shrimp meat is prone to autolysis and decay due to the abundance of endogenous enzymes and contamination from microorganisms. HVEF freezing can slow the spoilage of shrimp, producing small and uniform ice crystals, resulting in less damage to muscle tissue. In this study, HVEF technique was used to freeze the shrimp (Solenocera melantho), and the UPLC-MS metabolic technique was used to investigate the metabolites of frozen shrimp meat. Compared with the control group, 367 differential metabolites were identified in the HVEF group. Mapping them to the KEGG database, there were 108 with KEGG ID. Purine metabolism and pyrimidine metabolism were the most enriched pathways. In addition, phosphatidylcholines (PCs), inosine (HxR), and l-valine were identified as potential biomarkers associated with lipid, nucleotide, and organic acid metabolism, respectively. Overall, HVEF can improve freezing quality of shrimp meat by slowing down the metabolism of substances in the muscle of S. melantho.

Synergism effect of low voltage electrostatic field and antifreeze agents on enhancing the qualities of frozen beef steak: Perspectives on water migration and protein aggregation

In this study, a synergistic strategy utilizing low-voltage electrostatic field (LVEF) and antifreeze agents (4% sucrose +4% sorbitol) was proposed to reduce quality deterioration of prepared beef steak during freezing. The effects of the synergistic treatment on the water holding capacity, texture and muscle ultrastructure, myofibrillar protein (MP) aggregation was studied. Results showed that co-treatment significantly reduced thawing losses (about 41%) by preventing the migration of immobilized water to free water and reduced ice crystal size compared to air freezing (AF). In addition, co-treatment positively affected texture properties by shortening the gap between muscle fibers and maintaining the structural integrity of the sarcomeres. Moreover, synergistic treatment inhibited the unfolding of the MP structure and the formation of MP aggregates by strengthening non-covalent interactions. These results seem to demonstrate that LVEF can remarkably enhance the effects of cryoprotectants, which provides a new perspective on food cryoprotection. Industrial relevanceFreezing is the most common method of preserving prepared meat products, however, the formation of large ice crystals and the denaturation of muscle proteins are two major causes of quality deterioration during conventional air-freezing. In this study, a LVEF system was applied to the freezing process of prepared meat products, and a comparative and synergistic study was carried out with the current industry common chemical freezing protection methods (addition of antifreeze). The results showed that the synergistic treatment greatly promoted the nucleation of food products, shortened the phase transition time, reduced the ice crystal size and effectively reduced the thawing losses by approximately 41%. The green freezing system can be easily adapted to scenarios such as cold chain transport and cold storage. And the LVEF intensifies the interaction of antifreeze molecules with protein and water molecules, which seems to open up even more possibilities in cryopreservation.

DEEP OSCILLATION® THERAPY - CAN IT BE EFFECTIVE IN PATIENTS WITH COVID-19 AND POST - COVID SYNDROME

Treatment of patients with COVID-19, prevention of respiratory and other affected systems complications, prevention of multisystem damage and faster recovery possibilities and disease consequences overcoming is a particularly relevant topic today, when the number of people who have suffered from acute coronavirus infection is increasing. A tendency to shift the focus from acute manifestations to long-term morbidity and chronic involvement of various organs and systems is observed. In these subacute and chronic phases of illness, the application of physical modalities would be potentially effective. Traditionally, physical and rehabilitation medicine deals with patients with combined pathologies in order to reduce the duration of treatment and to speed up after-illness recovery. Deep Oscillation® therapy is a relatively new physical modality that is successfully applied to a number of diseases, including inflammatory pathologies of respiratory and musculoskeletal system, trauma, burns, fibrosis prevention, edema reduction, muscle relaxation etc. The purpose of this article is to make a review of the potential therapeutic effects of the Deep Oscillation® therapy application to patients suffering from COVID-19 and/or post-COVID-19 syndrome. Materials and methods: A review of the available literature was performed, including reports, articles, feedback letters regarding the application of Deep Oscillation® therapy. The search for scientific articles was conducted in the bibliographic database of Pub Med, Google Scholar, Elsevier. Results matching the following keywords were searched: Deep Oscillation® therapy, low-frequency and low-intensity electrostatic field, COVID-19, COVID-pneumonia, post-COVID-19 syndrome, long COVID, post-acute sequelae of SARS-CoV-2 infection, chronic COVID syndrome, diseases of the respiratory system, pneumonia, obstructive bronchitis, asthma, edema, lymphedema, musculoskeletal symptoms after COVID-19, chronic pain, myalgia, arthralgia, chronic back pain, fatigue. Results: The review made found evidence regarding the anti-inflammatory, anti-edematous, pain-reducing, and anti-fibrotic effects observed with the application of Deep Oscillation® in various diseases, including such of lungs. At this time, no research data were found regarding the application of Deep Oscillation® in patients with COVID-19 or after illness except for a brief communication in the form of a feedback letter regarding the therapy application in individual clinical cases of patients with COVID -19. Conclusion: The scientific studies carried out so far testify of established anti-inflammatory, -swelling and pain-reducing effects, fibrosis reduction possibilities, muscle spasm reduction, local microcirculation improvement and anti-lymphedematous effects of Deep Oscillation® application in various diseases, including lung diseases. These data suggest that a possible positive effect of the low-frequency electrostatic field can also be assumed in patients with COVID-19. Now, however, there are no clinical studies conducted about the Deep Oscillation® application effect in patients with COVID-19 and post COVID-19. Low-frequency electrostatic field therapy is probably an appropriate adjuvant therapy but cannot be recommended as a therapeutic modality in daily clinical practice in patients with COVID-19 due to the lack of reported therapeutic benefits in scientific reports. In the presence of convincing scientific evidence, this opinion is subject to correction. At the same time, it would be appropriate to determine the benefit of this therapy in post-COVID-19 recovery and persistent arthralgia and musculoskeletal symptoms.

Physical factors in traumatic arthropathy in children

The relevance and the urgent character of the problem of traumatic arthropathy of the knee joint in children is due to the high frequency of injuries of this localization, comprising from 5 to 25% of all injuries of the musculoskeletal system.&#x0D; Nowadays, physical factors are commonly used at different stages of medical rehabilitation of children with traumatic injuries of the knee joint. At the same time, scientifically substantiated recommendations for medical rehabilitation of children with nonspecific posttraumatic knee pain syndrome are insufficient.&#x0D; Studies conducted have ascertained the effectiveness of local air cryotherapy, which is characterized by an explicit anti-edema, analgesic effect. An early regression of pain has been registered, the elimination of microcirculatory disorders in the area of damage as a result of the course effects of pulsed low-frequency magnetic therapy at various stages of medical rehabilitation. The beneficial effect of a pulsed low-frequency electrostatic field on the indicators of orthopedic status, the state of microcirculation, thermography in the area of damage has been established in children with traumatic arthropathy of the knee joint.&#x0D; The possibility of using polychromatic polarized light in traumatic arthropathy of the knee joint in children, characterized by pain reduction due to muscle relaxation, activation of microcirculation in the injury area, restoration of the volume of movements, has been proved.