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Journal of Materials Science & Technology 2015年第12期31卷 1226-1231页

作者： larisa N.Dyachkova Eugene E.Feldshtein Institute of Powder Metallurgy Belarusian National Academy of Sciences Department of Mechanical Engineering University of Zielona Góra

Some properties of the Fe-based P/M composites sintered and reinforced by infiltration with Cu-Sn alloy were *** is shown that the hardness of the sintered material is 2.5 times lower,tensile strength is 1.7 times lower and the wear resistance is 2.5-3.3 times lower in comparison with those of the infiltrated *** presence of pores on the friction surface of the sintered material affects the features of the wear *** to the specific morphology of copper in the infiltrated material,the phenomenon of selective mass transfer is observed and worn surfaces have a spongy-capillary texture.

关键词： Metal matrix composites(MMCs) Sintering Infiltration Strength characteristics Wear

Peculiarities of the dependences of the dielectric properties of solid solutions of multicomponent systems on the electronegativity of their constituent cations

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Journal of Advanced Dielectrics 2022年第4期12卷 18-23页

作者： Andryushin Konstantin Dudkina Svetlana Shilkina Lidiya Sahoo Sushrisangita Moysa Maksim Andryushina Inna Verbenko Iliya Reznichenko larisa Research Institute of Physics Southern Federal UniversityStachki str.194 Rostov-on-Don 344090Russia

Solid solutions(SS)of 3-and 4-component systems based on lead titanate-zirconate were prepared by the method of solid-phase reactions and uniaxial hot *** dependences of the relative permittivity of polarized samples on the electronegativity(EN)of their constituent cations have been *** ferro-hardness of the SS(the stability of the domain structure to external influences)is shown to be directly dependent on the EN of elements B in the corresponding oxidation states,i.e.,the degree of covalence of the B-O *** deviation from this dependence in SS with Ni and Cd is explained by their individual features,which result in changes in the degree of bond covalence in both cationic *** conducted crystal-chemical analysis made it possible to choose promising SS when creating ferroelectric materials,including textured piezoelectric ceramic materials for piezoelectric transducers for various purposes:Piezotransformers,piezoelectric motors,ultrasonic emitters,filter devices,ultrasonic flaw detectors,accelerometers,etc.

关键词： Solid solutions multicomponent systems lead titanate-zirconate electronegativity dielectric properties

Vaccination coverage in children with juvenile idiopathic arthritis,inflammatory bowel diseases,and healthy peers:Cross-sectional electronic survey data

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World Journal of Clinical Pediatrics 2023年第2期12卷 45-56页

作者： Elizaveta Makarova Aygul Khabirova Natalia Volkova Tatiana Gabrusskaya Natalia Ulanova larisa Sakhno Maria Revnova Mikhail Kostik Department of Polyclinic Pediatrics Saint-Petersburg State Pediatric Medical UniversitySaint-Petersburg 194100Russia Department of Hospital Pediatrics Saint-Petersburg State Pediatric Medical UniversitySaint-Petersburg 194100Russia Department of Pediatric GI Saint-Petersburg State Pediatric Medical UniversitySaint-Petersburg 194100Russia

BACKGROUND Patients with immune-mediated diseases,such as juvenile idiopathic arthritis(JIA)and inflammatory bowel disease(IBD)are at increased risk of developing infections,due to disease-related immune dysfunction and applying of immunosuppressive *** To evaluate vaccine coverage in patients with IBD and JIA,and compare it with healthy *** In the cross-sectional study we included the data from a questionnaire survey of 190 Legal representatives of children with JIA(n=81),IBD(n=51),and healthy children(HC,n=58).An electronic online questionnaire was created for the *** There were female predominance in JIA patients and younger onset *** of JIA had higher education *** level and family status were similar in the three studied *** with JIA and IBD had lower vaccine coverage,without parental rejection of vaccinations in IBD,compare to JIA and healthy *** main reason for incomplete vaccination was medical conditions in IBD and *** patients had a lower rate of normal vaccine-associated reactions compared to JIA and *** encouraging role of physicians for vaccinations was the lowest in JIA *** patients had more possibilities to check antibodies before immune-suppressive therapy and had more supplementary vaccinations compared to JIA and *** JIA and IBD patients had lower vaccine coverage compared to ***'encouragement of vaccination and the impossibility of discus about future vaccinations and their outcomes seemed the main factors for patients with immune-mediated diseases,influencing vaccine *** investigations are required to understand the reasons for incomplete vaccinations and improve vaccine coverage in both groups,especially in rheumatic disease *** approaches that stimulate vaccination in healthy children are not always optimal in children with immunemediated *** is necessary to provide personalized vaccine-encouraging strategie

关键词： Vaccines Juvenile idiopathic arthritis Inflammatory bowel diseases Vaccine coverage Immune-mediated diseases

刚性沉水植物影响下波浪传播及泥沙悬浮数值模拟

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同济大学学报（自然科学版） 2022年第6期50卷 861-870页

作者：陈明娄厦刘曙光 RADNAEVA larisa Dorzhievna NIKITINA Elena CHALOV Sergey Romanovich 同济大学土木工程学院上海200092 同济大学长江水环境教育部重点实验室上海200092 俄罗斯科学院西伯利亚分院贝加尔湖自然管理研究所乌兰乌德670047俄罗斯莫斯科罗蒙诺索夫国立大学地理学院莫斯科119991俄罗斯

由于植物引起的紊动作用,含刚性植物床面中悬浮泥沙浓度与无植物裸床相比显著增加,而通过平均流速计算底床切应力的传统泥沙模型无法模拟出该现象。因此,在含植物水流水沙运动物理模型试验的基础上,构建了基于Flow–3D的含刚性沉水植物... 详细信息

由于植物引起的紊动作用,含刚性植物床面中悬浮泥沙浓度与无植物裸床相比显著增加,而通过平均流速计算底床切应力的传统泥沙模型无法模拟出该现象。因此,在含植物水流水沙运动物理模型试验的基础上,构建了基于Flow–3D的含刚性沉水植物条件下波浪传播的三维数学模型,模拟了植物影响下波浪动力特征和泥沙悬浮过程,同时从紊动能角度修正希尔兹数,对泥沙模块进行了改进。与实测数据相比,该模型可较精确地模拟出植物引起的整体水流流速减小和局部冠层顶部处的流速增大、水体紊动增强以及紊动能在波周期内出现两个峰值的现象。与原始泥沙模块相比,改进的模型考虑了植物尾流紊动对泥沙运动的影响,可提高含植物床面泥沙悬浮模拟的精度。

关键词： Flow–3D数值模拟刚性沉水植物波浪流速紊动能泥沙模块改进泥沙悬浮

Crystal structure,microstructure,electrophysical properties,and thermally induced aging of PZT-CdNb_(2)O_(6)ceramics

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Journal of Advanced Dielectrics 2022年第5期12卷 1-11页

作者： Andryushin Konstantin Pavelko Alexey Sahoo Sushrisangita Shilkina Lidiya Nagaenko Alxandr Andryushina Inna Moysa Maksim Reznichenko larisa Research Institute of Physics Southern Federal University Rostov-on-Don344090Stachki str.194Russia Institute of High Technology and Piezo Technic Southern Federal University Rostov-on-Don344090Milchakova 10Russia

Solid solution samples of the three-component system(1−x)Pb(Ti_(0.5)Zr_(0.5))O_(3)−xCdNb_(2)O_(6)with x=0.0125-0.0500,Δx=0.0125 were obtained by solid phase synthesis followed by sintering using conventional ceramic *** crystal structure,microstructure,electrophysical,and thermophysical properties of these ceramics have been *** is shown that all studied solid solutions can be divided into two groups(with x=0.0125 and with x>0.0125),characterized by different characteristics of the change in properties with variations in external *** is probably due to the transition from a perovskite-type structure with a tetragonal(T)unit cell to inhomogeneous solid solutions consisting of a series of T-phases with similar cell parameters.A conclusion is made about the expediency of using the data obtained in the development of similar materials for devices based on them.

关键词： PZT CdNb_(2)O_(6) XRD microstructure piezoelectric properties thermophysical properties phase transition fatigue

Evolution of structure and physical properties in Al-substituted Ba-hexaferrites

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Chinese Physics B 2016年第1期25卷 706-711页

作者： Alex Trukhanov larisa Panina Sergei Trukhanov Vitalii Turchenko Mohamed Salem National University of Science and Technology MISiS 119049MoscowLeninsky Prospckt4Russia SSPA Scientific and Practical Materials Research Centre of NAS of Belarus 220072 RBMinsk19 P.Brovki Str.Russia Joint Institute for Nuclear Research 141980Dubna6 Joliot-Curie StreetRussia

The investigations of the crystal and magnetic structures of the BaFe12_xAlxO19 （x = 0.1-1.2） solid solutions have been performed with powder neutron diffractometry. Magnetic properties of the BaFe12_xAlxOt9 （x = 0.1-1.2） solid solutions have been measured by vibration sample magnetometry at different temperatures under different magnetic fields. The atomic coordinates and lattice parameters have been Rietveld refined. The invar effect is observed in low temperature range （from 4.2 K to 150 K）. It is explained by the thermal oscillation anharmonicity of atoms. The increase of microstress with decreasing temperature is found from Rietveld refinement. The Curie temperature and the change of total magnetic moment per formula unit are found for all compositions of the BaFet2_xAlxO19 （x = 0.1-1.2） solid solutions. The magnetic structure model is proposed. The most likely reasons and the mechanism of magnetic structure formation are discussed.

关键词： barium hexaferrites neutron diffraction crystal and magnetic structures

Eyelid reconstruction methods:A 10-year review

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Chinese Journal Of Plastic and Reconstructive Surgery 2023年第4期5卷 205-211页

作者： Maria Cervatiuc Igor Vladimirovich Reshetov Svetlana Vagovna Saakyan Eldor Jonnazarov larisa Viktorovna Shklyaruk Nodirbek Ulugbekovich Dzhapiev Bashirkhon Ahmadkhojaevich Tursunov Department of Oncology Radiotherapy and Plastic SurgeryI.M.Sechenov First Moscow State Medical University(Sechenov University)Moscow 119435Russia Department of Oncology and Plastic Surgery Academy of Postgraduate Education of the FSBI FSCC Federal Medico-Biological Agency of RussiaMoscow 119435Russia Department of Ocular Oncology and Radiology FSBI the Moscow Helmholtz Research Center of Eye DiseasesMoscow 105062Russia Department of Ophthalmology I.M.Sechenov First Moscow State Medical University(Sechenov University)Moscow 119021Russia Department of Ophthalmology Peoples’Friendship University of Russia(RUDN University)Moscow 117198Russia Department of Pathological Physiology and Pathological Anatomy with Forensic Medicine Tajik National University(TNU)Dushanbe 734025Tajikistan

In ophthalmological practice,eyelid reconstruction is often needed because of the presence of defects that arise after the excision of a tumor or after *** methods for reconstructing these defects have been previously ***,it is important to understand the basic principles underlying these techniques and their advantages and disadvantages to ensure the choice of the optimal technique in a particular *** have analyzed the recent literature on new methods or modifications of existing ones to provide a brief overview of the reconstructive methods of the century for *** searched PubMed and CyberLeninka for articles on restoring eyelid defects reported in the literature over the past 10 *** techniques can be considered modified classical reconstruction *** complications included aesthetic defects,such as scarring of the upper or lower eyelid,trichiasis,entropion,and *** continue to search for the best methods for complex reconstructive surgery to achieve good cosmetic and aesthetic outcomes.

关键词： Eyelid defect Eyelid reconstruction Hughes technique Free skin flap Cutler-beard technique

Unusual self-assembled nanoaggregation of the thermally stable metal-free slipped-cofacial J-type phthalocyanine dimer

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Chinese Chemical Letters 2017年第1期28卷 89-91页

作者： Alexander Yu.Tolbin larisa G.Tomilova Institute of Physiologically Active Compounds Russian Academy of Sciences Department of Chemistry M. V. Lomonosov Moscow State University

Nanoaggregation of the thermally stable bis（2-hydroxy-9（10）,16（17）,23（24）-tri-tert-butylphthalocyanine） of J-type was observed by the field emission scanning electron microscopy（FE-SEM）. Ordered phases, represented as threads composed of about 200 nm diameter circles were discovered, unlike the parent dimeric magnesium complex, in which similar circles combine together to give visually distinguishable zones with widths of about 600 nm and the same distance between them.

关键词： Nanoaggregation Phthalocyanine J-type dimer Electron microscopy

The new antioxidant 1-benzoyl-6-hydroxy-2,2,4-trimethyl-1,2- dihydroquinoline has a protective effect against carbon tetrachloride-induced hepatic injury in rats

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The Journal of Biomedical Research 2022年第6期36卷 423-434页

作者： Evgenii Dmitrievich Kryl'skii Darya Andreevna Sinitsyna Tatyana Nikolaevna Popova Khidmet Safarovich Shikhaliev Svetlana Mikhajlovna Medvedeva larisa Vladimirovna Matasova Valentina Olegovna Mittova Department of Medical Biochemistry and Microbiology Voronezh State UniversityVoronezhVoronezh region 394018Russia Department of Organic Chemistry Voronezh State UniversityVoronezhVoronezh region 394018Russia Department of Clinical Laboratory Diagnostics Voronezh State Medical University named after N.N.BurdenkoVoronezhVoronezh region 394036Russia

Liver diseases with the central pathogenetic mechanism of oxidative stress are one of the main causes of mortality ***,dihydroquinoline derivatives,which are precursors of hepatoprotectors and have antioxidant activity,are of *** have previously found that some compounds in this class have the ability to normalize redox homeostasis under experimental ***,we initially analyzed the hepatoprotective potential of the dihydroquinoline derivative 1-benzoyl-6-hydroxy-2,2,4-trimethyl-1,2-dihydroquinoline(BHDQ)for carbon tetrachloride(CCl4)-induced liver injury in *** suggested that BHDQ normalized the alanine aminotransferase,aspartate aminotransferase,and gamma-glutamyl transpeptidase in *** also observed an improvement in liver tissue morphology related to *** with CCl4-induced liver injuries treated with BHDQ had less oxidative stress compared to animals with CCl4-induced liver *** promoted activation changes in superoxide dismutase,catalase,glutathione peroxidase,glutathione reductase,and glutathione transferase on control values in animals with CCl4-induced liver *** also activated gene transcription in Sod1 and Gpx1 via nuclear factor erythroid 2-related factor 2 and forkhead box protein O1 ***,the compound of concern has a hepatoprotective effect by inhibiting the development of necrotic processes in the liver tissue,through antioxidation.

关键词： CCl4-induced hepatic injury oxidative stress 1-benzoyl-6-hydroxy-2,2,4-trimethyl-1 2-dihydroquinoline antioxidants

Texture,composition and properties of plugs formed by carbon dioxide hydrate and wax

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Petroleum Exploration and Development 2021年第6期48卷 1462-1470页

作者： SKIBA Sergey SAGIDULLIN Aleksey SHAPOVALOVA Alexandra STRELETS larisa MANAKOV Andrey Nikolaev Institute of Inorganic Chemistry SB RASAc.Lavrentiev Ave.3Novosibirsk 630090Russia Novosibirsk State University Pirogova Str.2Novosibirsk 630090Russia Institute of Petroleum Chemistry SB RAS Akademichesky ave.4Tomsk 634021Russia

Gas hydrates and wax are the major flow assurance problems for the transportation of produced hydrocarbons through ***,in most research works both these two problems are studied *** simultaneous precipitation or deposition of these compounds in pipelines can lead to different mitigation/prevention strategies,the investi-gations in which both these problems are considered simultaneously appeared only *** is no information in the literature on the texture/composition and features of decomposition process of mixed wax/hydrate *** the same time,this information could be useful to understand how to treat the problem of formation of these *** this work,three wax/gas hydrate plugs were collected at quasi-static conditions from a water-in-oil emulsion to study their texture,composition and the features of decomposition *** X-ray diffraction and IR(infrared spectroscopy)analyses showed that the plugs consisted of wax and gas *** and DSC(Differential Scanning Calorimetry)experiments showed that the main part of gas hydrate in the plugs at the ambient pressure started to decompose at about 268 *** temperature was higher than the equilibrium temperature of carbon dioxide hydrate at this pressure,indicating that the gas hydrate in the plugs could be effectively preserved at temperatures below the ice melting point(273.2 K).It was found through observation of the hydrate decomposition process in the plugs under the microscope that the gas in the samples released in small bubbles,while the hydrate particles were not visible at this magnification,indicating that the hydrate was indeed highly dispersed in the samples.A residual wax was jelly-like after decomposition of hydrate in all the *** experiments showed that the plugs residues after decomposition of the hydrates had higher yield points and viscosities than the initial waxy crude oil origi-nally used for the experiments.

关键词： carbon dioxide hydrate hydrate/wax plug plug texture hydrate decomposition