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Effectiveness of negative pressure wound therapy in complex surgical treatment of necrotizing fasciitis of the upper limb

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World Journal of Orthopedics 2024年第11期15卷 1015-1022页

作者： Konstantin V Lipatov Arthur Asatryan George Melkonyan aleksandr D Kazantcev Ekaterina I Solov’eva Denis V Krivikhin Irina V Gorbacheva Urii E Cherkasov Department of General Surgery Institute of Clinical Medicine named after N.V.SklifosovskySechenov First Moscow State Medical University(Sechenov University)Moscow 119021Russia Department of General Surgery Wound and Wound Infection SurgeryState Budgetary Institution“City Clinical Hospital named after S.S.Yudin of Moscow Healthcare Department”Moscow 115446Russia Department of General Surgery Physician of The Hospital for War Veterans No 3Moscow 129336Russia Department of General Surgery I.M.Sechenov First Moscow State Medical UniversityMoscow 119048Russia

BACKGROUND Necrotizing fasciitis(NF)of the upper extremities is a severe surgical pathology,and the incidence of this disease has been steadily increasing in recent *** treatment is accompanied by the formation of extensive wounds,which can be treated with significant *** recent years,negative pressure wound therapy(NPWT)has proven to be highly *** is also promising for the treatment of *** To explore the effectiveness of NPWT in the treatment of NF of the upper *** The results of the treatment of 36 patients with NF of the upper extremities in two groups(NPWT group and control group;2022−2023)were retrospectively *** the NPWT group,the NPWT method(120 mmHg;constant mode)was used after surgical *** number of vacuum-assisted dressings in patients ranged from 1 to 3,depending on the dynamics of the wound *** duration of fixation of one bandage was up to 2−3 *** the control group,conventional methods of local wound treatment were *** following indicators were analyzed:The treatment delay,the prevalence of inflammation,the microbial landscape,the number of debridements,the duration of wound preparation for surgical closure,and the nature of skin plastic *** Most patients experienced a significant treatment delay[4 d,interquartile range(IQR):2–7 d],which led to the spread of the pathological process to the forearm and *** most common pathogens were Staphylococcus aureus(14;38.9%)and Streptococcus pyogenes(22;61.1%).The average number of debridements per patient was 5(IQR:3–7),with no difference between *** average time to prepare wounds for surgical closure was 11±4 d in the NPWT group and 29±10 d(P=0.00001)in the control *** the NPWT group,the wounds were more often closed with local tissues(15;83.3%),and in the control group,split-thickness skin grafts were more often used(4;50%).CONCLUSION The predominant isolation of Staphylococcus aureus and/or Strep

关键词： Necrotizing fasciitis Upper limb Negative pressure wound therapy Vacuum-assisted closure Surgical treatment

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Thermophoresis of Carboxylic Nanotubes in Gaseous Atmosphere

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Advances in Nanoparticles 2014年第1期3卷 36-40页

作者： Aleksey Bubenchikov aleksandr Potekaev Mikhail Bubenchikov Vladimir Korobitsyn Ivan Klykov Siberian Physical-Technical Institute Tomsk State University Tomsk Russia Tomsk State University Tomsk Russia Tomsk State University Tomsk Russia Buryat State University Ulan-Ude Russia

The present paper deals with motion of carbon nanotubes in a temperature gradient field. A determined-static theory of nanosized particles’ thermophores is developed. Analytical expressions for thermophoretic velocity and force of ultramicroheterogeneous particles in a gaseous atmosphere under near-normal conditions are provided. The calculations performed according to the suggested theory, as applied to closed carbon nanotubes, found the value of dimensionless velocity of thermophoresis. In accordance with the proposed hypothesis, Waldman’s limit is achieved, which is expressed in constancy of thermophoretic velocity within the interval of the Knudsen parameter change from 10 to 100. In addition, it is found out that under conditions defined below, velocity of thermophoresis is independent of the length of a carboxylic nanotube. A good agreement with experiments is reached, which makes it possible to assume correspondence of the theory to the physical truth.

关键词： Thermophoresis Carboxylic Tube Dynamics of Nanoparticles Ideal Gas Statistical Distribution Monokinetic Model Mathematical Modelling

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Septic arthritis of the hand: From etiopathogenesis to surgical treatment

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World Journal of Orthopedics 2022年第11期13卷 993-1005页

作者： Konstantin V Lipatov Arthur Asatryan George Melkonyan aleksandr D Kazantcev Ekaterina I Solov’eva Irina V Gorbacheva Alexander S Vorotyntsev Andrey Y Emelyanov General Surgery Department Institute of Clinical Medicine named after N.V.SklifosovskySechenov First Moscow State Medical University(Sechenov University)Moscow 119021Russia General Surgery Department State Budgetary Institution“City Clinical Hospital named after S.S.Yudin of Moscow Healthcare Department”Moscow 115142Russia General Surgery Department The Hospital for War Veterans N3Moscow 129336Russia General Surgery Department I.M.Sechenov First Moscow State Medical UniversityMoscow 119991Russia

BACKGROUND Septic arthritis of the hand,which is the second most common after damage of the knee joint,remains one of the leading causes of temporary *** inflammation can cause dysfunction of the joint,and in the most severe cases,the need for amputation of the finger may *** results of their treatment today,especially from a functional point of view,cannot be considered *** surgical treatment is extremely important in septic arthritis of the hand,as it helps to prevent cartilage destruction and the development of *** To explore the features of the course of septic arthritis of the hand as well as approaches to surgical treatment and its results,depending on the nature of the damage to the articular *** The results of the treatment of 170 patients with septic arthritis of the hand,which were treated in the period of 2020-2021,were *** of the interphalangeal and metacarpophalangeal joints(MCP)of fingers 1,2,and 3 was more often noted in 147(81.6%)*** most common cause of arthritis was a penetrating injury as a result of household trauma(101,59.4%),animal bite(30,17.6%),and clenched fist injury(15,8.8%).Septic arthritis with contiguous osteomyelitis was observed in 98(54.4%)*** treatment was completed with drainage and irrigation of the *** mobilization was used to restore *** patients with osteomyelitis,it was aimed at the formation of *** was not ***-term results of treatment were assessed in 142(83.5%)patients within 1 mo to 12 mo after discharge from the hospital[the median was 7 mo(IQR:4-9)].RESULTS The most commonly isolated organism was Staphylococcus aureus(35.3%).The median treatment delay in patients without osteomyelitis was 5 d(IQR:4-7);for septic arthritis with contiguous osteomyelitis,it was 14 d(IQR:5-21).Radiography for osteomyelitis within 2 wk was uninformative:41.2%of diagnoses.A single surgical treatment was

关键词： Septic arthritis Osteomyelitis Hand Surgical treatment Neoarthrosis

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Demographic ageing,health status and life quality of the elderly in Russia

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China Population and Development Studies 2023年第2期7卷 130-159页

作者： Alla Ivanova Elena Zemlyanova Tamara Sabgayda Victoria Semyonova aleksandr Zubko Irina Kryukova Institute for Demographic Research of the Federal Center of Theoretical and Applied Sociology of the Russian Academy of Sciences(Health and Self-Preservation Behavior Department) st.Fotievad.6k.1119333 MoscowRussia Research Institute of Healthcare Organization and Medical Management of the Moscow Healthcare Department st.Sharikopodshipnikovskaya9115088 MoscowRussia

Within the context of the national policy on the elderly,the paper presents trends in demographic ageing,health and life quality of the elderly in *** and political consequences of the XX century have resulted in significant fluctuations in the number of individual generations,forming a long-term fluctuating trend in demographic ageing in *** historical disproportions have overlapped with regional variations in ageing rates due to significant inter-regional population movements,rural-urban migration,substantial gender differences in trends and scales of mortality and fertility *** a result,levels of demographic ageing in Russia vary more than three-fold,worsening in females and rural *** problems are aggravated by unsatisfactory health status of the elderly,manifested in high burden of chronic diseases(especially cardiovascular diseases),leading to life restrictions up to loss of the ability to ***-tech cardiac surgery contributes to life prolongation and improved physical and psychological ***,during rehabilitation,most patients are reluctant to change their unhealthy lifestyle associated with cardio *** and psychoactive substance abuse(in males)are the risk factors of suicidal behaviour,while accessibility of medications,including sleeping pills,firearms,*** to realization of this *** conditions of the elderly and their access to quality social services are important components of wellbeing in terms of *** satisfactory living conditions,the situation significantly differs by type(urban/rural)and size of the *** microsocial contacts with children,family and friends is a powerful source of psychological comfort and social wellbeing.

关键词： Population ageing National policy on the elderly Age structure Share of the elderly Physical wellbeing Psychological wellbeing Social wellbeing Polymorbidity Comorbidities

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Numerical Simulation for Investigation and Design of Steel Strip Induction Heating Lines for Rolling Mills

Numerical Simulation for Investigation and Design of Steel S...

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第七届冶金与材料电磁过程国际会议（EPM2012）

作者： NIKANOROV aleksandr NACKE Bernard LEE Dukman YOU Jongwoo Institute of Electrotechnology Leibniz Universitat Hannover POSCO Technical Research Laboratories

Continuous steel strip casting lines in rolling miles are under active *** to high thermal losses the thin strip is cooling down very fast and therefore a sufficient heating system is necessary before final *** induction heaters can realize the necessary fast heating of the strip and a good energy efficiency of *** of induction heating lines for rolling mills are of extremely high power,all even small improvements in their design and operating modes have significant technical and economical ***,the heating lines need an optimal design of the complex induction systems and only numerical simulation is a way to solve the *** two- and threedimensional numerical simulation approaches developed and applied for investigation and design of longitudinal induction heaters are described in the *** numerical models have been successfully used for development of modified coils allowing high efficient heating of thinner strip using the same operating *** electrical impedance of the modified coils has been provided on the level necessary for using the existing power supplies and matching *** high electrical efficiency,the modified coils improve the temperature distribution over the strip width by increased heating of the strip *** optimized and modifies induction coils have been successfully tested in industrial line.

关键词： steel strip induction heating rolling mills numerical simulation

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On the Biological Regulators of Bloodsucking Blackflies(Diptear:Simuliidae)of Mixed Forests of Belorussian and Ukrainian Woodlands

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Journal of Zoological Research 2021年第2期3卷 18-24页

作者： Valery M.Kaplich Ekaterina B.Sukhomlin aleksandr P.Zinchenko Department of Tourism and Nature Management Belarussian State Technological UniversityMinskBelorussia Department of Zoology Lesya Ukrainka Volyn National UniversityLutskUkraine

This article considers the natural regulators of blood-sucking Simuliidae subzone of mixed forests on the territory of Belarus and *** the mixed forests,the major regulators of preimaginal phases of bloodsucking blackflies are microsporidia(Polidyspirenia simulii,Polidyspirenia sp.,Thelohania fibrata,Amblyospora bracteata,***),fungi and mermithides(Gastromermis boophthorae).Caddisfly larvae(Hydropsyche angustipennis,Neureclipsis bimaculata,Polycentropus flavomaculatus,Cyrnus flavidus,Oligostomis reticulata,Brachycentrus subnubilus and Rhyacophila nubila)and fishes(Scardinius erythrophthalmus,Rutilus rutilus,Carassius carassius,Gobio gobio)significantly reduce the number of blackflies larvae and *** blackflies are eaten by spiders(Araneus diadematus)dragonflies,robberflies,wasps,frogs(Rana temporaria and Rana terrestris),and insectivorous birds(Delichon urbicum,Hirundo rustica,Apus apus).Bactolarvicid and BLP-2477 are among the most effective biological products.

关键词： Blackflies Biological regulators Parasites Predators Biologicals

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Optimizing the Parameters of Laser Controlled Thermocracking When Cutting Glass by a Non-Rectilinear Contour

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Optics and Photonics Journal 2015年第10期5卷 295-302页

作者： Vladimir Stepanovich Kondratenko Vladimir Evgenyevich Borisovskiy aleksandr Sergeevich Naumov Aleksey Konstantinovich Zobov Institute of High Technologies MGUPI Department 'Innovative Technologies in Engineering Micro- and Opto-Electronics’ (MGUPI) Moscow Russia Moscow State University of Instrument Engineering and Computer Science (MGUPI) Moscow Russia

The work is devoted to the choice of optimal parameters of laser controlled thermocracking (LСT) when cutting products with a complex curvilinear contour. With this purpose the LCT mathematical model is considered when a laser beam and coolant transfer from a rectilinear site to a non-rectilinear contour with given radius R. The obtained findings allow proper adjustment of LCT modes to ensure a higher quality of cutting the glass.

关键词： Laser Controlled Thermocracking (LCT) CO2-Laser

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The Effect of Quartz Window on Bistability of the Silicon Wafer in Lamp-Based Reactor

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Journal of Materials Science and Chemical Engineering 2020年第1期8卷 54-65页

作者： Valeriya P. Prigara aleksandr N. Kupriyanov Vladimir V. Ovcharov Valiev Institute of Physics and Technology of Russian Academy of Sciences Yaroslavl Branch Yaroslavl Russia

The effect of a quartz plate (window) on the silicon wafer temperature is studied in the conditions of the combined thermal transfer in a lamp-based chamber for the rapid thermal treatment (RTP) set up. The chamber for RTP is simulated by a radiative-closed thermal system including the influence of quartz window as a spectral filter of lamp emission and a source of emitted thermal radiation. Energy equations for thermal fluxes involved in the heat input and output from the working wafer and quartz window are solved in spectral approximation. The transfer characteristics that are defined by the temperature dependencies of the silicon wafer and the quartz window on the temperature of the heater are accounted. It is shown that temperature bistability in the silicon wafer initiates an induced bistability into the quartz window that does not reveal bistable behavior because of the linear temperature dependence of its total optical characteristics. A possibility for simulation of the quartz window by spectral restriction of the heater radiation is confirmed. The availability of the weak bistable effect in the mode of zero effective heat exchange coefficient of a non-radiative component of the thermal flux removed from the working wafer has been obtained.

关键词： Lamp-Based Rector Silicon Wafer Quartz Window Temperature and Optical Bistability Induced Bistability Effect

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Pulsed THz radiation under ultrafast optical discharge of vacuum photodiode

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Frontiers of Optoelectronics 2024年第2期17卷 99-112页

作者： aleksandr Ushakov Kseniia Mamaeva Leonid Seleznev Georgy Rizaev Vladimir Bukin Timophey Dolmatov Pavel Chizhov Vladimir Bagdasarov Sergey Garnov Prokhorov General Physics Institute of the Russian Academy of Sciences Moscow 119991Russia Physical Institute Russian Academy of SciencesMoscow 119991Russia Moscow Institute of Physics and Technology Dolgoprudny 141700Russia Russian Institute for Scientific and Technical Information Moscow 125190Russia

In this paper,we first present an experimental demonstration of terahertz radiation pulse generation with energy up to 5 pJ under the electron emission during ultrafast optical discharge of a vacuum *** use a femtosecond optical excitation of metallic copper photocathode for the generation of ultrashort electron bunch and up to 45 kV/cm external electric field for the photo-emitted electron *** of terahertz pulses energy as a function of emitted charge density,incidence angle of optical radiation and applied electric field have been *** and polarization characteristics of generated terahertz pulses have also been *** proposed semi-analytical model and simulations in COMSOL Multiphysics prove the experimental data and allow for the optimization of experimental conditions aimed at flexible control of radiation parameters.

关键词： Electron emission Vacuum photodiode Ultrafast excitation Terahertz

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SYNTHESIS AND PROPERTIES OF λ~5-PHOSPHININES AND λ~5-AZAPHOSPHININES

SYNTHESIS AND PROPERTIES OF λ~5-PHOSPHININES AND λ~5-AZAPH...

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第17届国际磷化学大会

作者： aleksandr N.Kostyuk Yurii V.Svyashchenko Dmitrii M.Volochnyuk Dmitrii A.Sibgatulin aleksandr M.Pinchuk Institute of Organic Chemistry National Academy of Sciences of Ukraine Murmanska Str.5Kyiv02094 Ukraine Institute of Organic Chemistry National Academy of Sciences of Ukraine Murmanska Str.5Kyiv02094 Ukraine Institute of Organic Chemistry National Academy of Sciences of Ukraine Murmanska Str.5Kyiv02094 Ukraine Institute of Organic Chemistry National Academy of Sciences of Ukraine Murmanska Str.5Kyiv02094 Ukraine Institute of Organic Chemistry National Academy of Sciences of Ukraine Murmanska Str.5Kyiv02094 Ukraine

＜正＞Continuing our research [1] on λ5-phosphinines and λ5-azaphosphinines we have further investigated the reaction of phosphine 1 bearing an enamine residue with alkylating agents. The

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