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Rare primary mature teratoma of the liver:A case report

World Journal of Hepatology 2021年第12期13卷 2192-2200页

作者： Yury A Kovalenko Yury O Zharikov Yana v Kiseleva Anton B Goncharov Tatyana v Shevchenko Beslan N Gurmikov Dmitry v Kalinin alexey v Zhao Department of Surgical Oncology and Chemotherapy A.V.Vishnevsky National Medical Research Center of Surgery of the Russian Ministry of HealthcareMoscow 115093Russia Department of Human Anatomy Sechenov First Moscow State Medical University(Sechenov University)Moscow 119048Russia International School“Medicine of the Future” Sechenov First Moscow State Medical University(Sechenov University)Moscow 119048Russia Pathology Department A.V.Vishnevsky National Medical Research Center of Surgery of the Russian Ministry of HealthcareMoscow 115093Russia

BACKGROUND Primary liver teratoma is an extremely rare tumor usually affecting children under the age of 3 *** signs of teratoma on ultrasound,computed tomography(CT)or magnetic resonance imaging are lacking,which makes morphology the only diagnostic *** of a mature teratoma may lead to excessive liver resection,whereas misdiagnosis of an immature teratoma may result in spread,causing a life-threatening ***,a careful tumor examination is important,and the rarest types of tumors must be accounted *** SUMMARY We describe a 52 years old female who presented with a solid mass in the left liver ***-enhanced CT and magnetic resonance imaging(MRI)revealed a round,heterogeneous lesion containing a number of fluid areas and areas of calcification in the middle,and the provisional diagnosis was *** patient underwent resection of liver segment *** analysis of the resected lesion indicated thyroid follicular epithelium;however,the thyroid gland was intact.10 years prior to presentation the patient underwent a surgery due to mature teratoma of the right ovary,nevertheless the tumor was benign and could not spread to the liver,in addition teratoma of the liver was also *** led to the final diagnosis of primary mature liver *** Primary hepatic teratoma,including heterotopia of the thyroid gland in the liver,is an extremely rare condition in adults that needs to be considered in the differential diagnosis of solid-cystic neoplasms in the liver and *** case adds to the limited literature on the patient presentation,clinical workup and management of liver teratomas.

关键词： Case report Primary liver teratoma Ectopic thyroid gland tissue Mature teratoma Epidermoi cyst

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Quantum Properties of Two-Dimensional Electron as Invariants of Periodic Confining Potential Transformations

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材料科学与工程（中英文B版） 2012年第2期2卷 208-211页

作者： alexey v. Bunyakin Kuban State Technological University

Studying of properties of quantum rings (nano-size and mesoscoping) in a magnetic field is one of directions on which there are interesting results. Quantum transitions in such structures are accompanied by radiation on border of infra-red light, and interest is caused by periodic structures in quantum rings or six-angular cells are cooperate with problems of pseudo-crystal construction. In this work results of calculations are shown of such structure in two-dimension statement (periodicity is provided with decomposition of the solution and confining potential in Fourier series on both spatial coordinates) are presented.

关键词：量子特性二维电子周期性结构期限晶体结构傅里叶级数纳米尺寸量子跃迁

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vectorial spin-orbital Hall effect of light upon tight focusing and its experimental observation in azopolymer films

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Opto-Electronic Science 2023年第7期2卷 12-30页

作者： alexey Porfirev Svetlana Khonina Andrey Ustinov Nikolay Ivliev Ilya Golub Image Processing Systems Institute of RAS—Branch of the FSRC"Crystallography and Photonics"RAS Samara 443001Russia School of Advanced Technology Algonquin CollegeOttawaOntario K2G 1V8Canada

Hall effect of light is a result of symmetry breaking in spin and/or orbital angular momentum(OAM)possessing optical system and is caused by *** index gradient/interface between media or focusing of a spatially asymmetrical beam,similar to the electric field breaking the symmetry in spin Hall effect for *** angular momentum(AM)conservation law in the ensuing asymmetric system dictates redistribution of spin and orbital angular momentum,and is manifested in spin-orbit,orbit-orbit,and orbit-spin conversions and reorganization,***-orbit and orbit-orbit *** AM restructuring in turn requires shifts of the barycenter of the electric field of *** the present study we show,both analytically and by numerical simulation,how different electric field components are displaced upon tight focusing of an asymmetric light beam having OAM and *** relation between field components shifts and the AM components shifts/redistribution is presented ***,we experimentally demonstrate,for the first time,to the best of our knowledge,the spin-orbit Hall effect of light upon tight focusing in free *** is achieved using azopolymers as a media detecting longitudinal or z component of the electrical field of *** findings elucidate the Hall effect of light and may broaden the spectrum of its applications.

关键词： spin-orbital Hall effect of light symmetry breaking spin-orbit interaction azopolymers optical vortex polarization

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Machine Learning Application for Prediction of Sapphire Crystals Defects

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电子科技学刊：英文版 2020年第1期18卷 1-9页

作者： Yulia vladimirovna Klunnikova Maxim vladimirovich Anikeev alexey vladimirovich Filimonov Ravi Kumar Institute of Nanotechnology Electronics and Engineering EquipmentSouthern Federal UniversityTaganrog 347928 Institute of Computer Technology and Information Security Southern Federal UniversityTaganrog347928 Department of Physical Electronics Peter the Great St.Petersburg Polytechnic UniversitySt.Petersburg 195251 the Department of Metallurgical and Materials Engineering Indian Institute of Technology MadrasChennai600036

We investigate the impact of different numbers of positive and negative examples on machine learning for sapphire crystals defects prediction. We obtain the models of crystal growth parameters influence on the sapphire crystal growth. For example, these models allow predicting the defects that occur due to local overcooling of crucible walls in the thermal node leading to the accelerated crystal growth. We also develop the prediction models for obtaining the crystal weight, blocks, cracks, bubbles formation, and total defect characteristics. The models were trained on all data sets and later tested for generalization on testing sets, which did not overlap the training *** training and testing, we find the recall and precision of prediction, and analyze the correlation among the features. The results have shown that the precision of the neural network method for predicting defects formed by local overcooling of the crucible reached 0.94.

关键词： Defects machine learning sapphire crystals

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Characterization of cerebral blood flow dynamics with multiscale entropy

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Journal of Innovative Optical Health Sciences 2017年第5期10卷 85-93页

作者： alexey N.Pavlov Arkady S.Abdurashitov Olga N.Pavlova Maria v.Ulanova Anastasia A.Bodrova Natalia A.Shushunova Alexander P.Khorovodov Oxana v.Semyachkina-Glushkovskaya Yuri Gagarin State Technical University of Saratov 77 Politechnicheskaya Street Saratov 410054Russia Saratov National Research State University 83 Astrakhanskaya Street Saratov 410012Russia

Based on the laser speckle contrast imaging(LSCI)and the multiscale entropy(MSE),we study in this work the blood flow dynamics at the levels of cerebral veins and the surrounding network of microcerebral *** discuss how the phenylephrine-related acute peripheral bypertension is refected in the cerebral circulation and show that the observed changes are scale dependent,and they are signifcantly more pronounced in microcerebral vessels,while the macrocerebral dynamics does not demonstrate authentic inter-group *** also consider the permeability of blood-brain barrier(BBB)and study its opening caused by sound *** show that alterations associated with the BBB opening can be revealed by the analysis of blood flow at the level of macrocerebral vessels.

关键词： Cerebral blood flow laser speckle contrast imaging arterial pressure complexity

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Spontaneous emission in non-local materials

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Light(Science & Applications) 2016年第1期5卷 1-10页

作者： Pavel Ginzburg Diane J Roth Mazhar E Nasir Paulina Segovia alexey v Krasavin James Levitt Liisa M Hirvonen Brian Wells Klaus Suhling David Richards viktor A Podolskiy Anatoly v Zayats Department of Physics King’s College LondonStrandLondon WC2R 2LSUK Present address:School of Electrical Engineering Tel Aviv UniversityTel Aviv 69978Israel Department of Physics and Applied Physics University of Massachusetts LowellOne University AveLowellMA 01854USA Present address:Department of Physics University of HartfordWest HartfordCT 06117USA

Light–matter interactions can be strongly modified by the surrounding ***,we report on the first experimental observation of molecular spontaneous emission inside a highly non-local metamaterial based on a plasmonic nanorod *** show that the emission process is dominated not only by the topology of its local effective medium dispersion,but also by the non-local response of the composite,so that metamaterials with different geometric parameters but the same local effective medium properties exhibit different Purcell factors.A record-high enhancement of a decay rate is observed,in agreement with the developed quantitative description of the Purcell effect in a non-local *** engineered material non-locality introduces an additional degree of freedom into quantum electrodynamics,enabling new applications in quantum information processing,photochemistry,imaging and sensing with macroscopic composites.

关键词： composite electromagnetic materials non-local optical properties plasmonic metamaterials quantum electrodynamics spontaneous emission

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An Asthenospheric Upwelling Beneath Central Mongolia——Implications for Intraplate Surface Uplift and volcanism

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Acta Geologica Sinica(English Edition) 2021年第S1期95卷 70-72页

作者： Matthew J.COMEAU Michael BECKEN alexey v.KUvSHINOv Alexander GRAYvER Johannes KAUFL Erdenechimeg BATMAGNAI Shoovdor TSERENDUG Sodnomsambuu DEMBEREL Institut für Geophysik Universitat MünsterGermany Institute of Geophysics ETHZürichSwitzerland Institute of Astronomy and Geophysics Mongolian Academy of SciencesUlaanbaatarMongolia

Intraplate processes,such as continental surface uplift and intraplate volcanism,are enigmatic and the underlying mechanisms responsible are not fully *** Mongolia is an ideal natural laboratory for studying such proc... 详细信息

关键词： magnetotellurics electrical resistivity lithosphere structure intraplate volcanism surface uplift mantle upwelling lithosphere removal thermo-mechanical modeling

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Technological risk regulation of the subgrade base stability in permafrost areas

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Research in Cold and Arid Regions 2017年第3期9卷 321-324页

作者： S.Ya.Lutskiy T.v.Shepitko alexey Y.Burukin Federal State-Funded Educational Institution of Higher vocational Education 'Moscow State University of Railway Engineering' MGUPS (MIIT) Public Joint Stock Company 'MOSTOTREST' (PJSC 'MOSTOTREST')

Maintenance and risk estimation of a weak roadbed condition during the construction period are ***-management procedure for unstable,weak soils is proposed through adjusting the technological loads and real-time monitoring of their *** efficiency of implementing maximum allowable vibroloads and the drainage system for strengthening weak soils is shown in the example of the Northern Latitudinal Railway area.

关键词： roadbed technology risk stability

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基于聚类经验模态分解的地球天然脉冲电磁场时频与能量谱分析：以芦山Ms7．0地震为例

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地学前缘 2015年第5期22卷 231-238页

作者：郝国成龚婷董浩斌 v.G.SIBGATULIN 陈忠昌 alexey KABANOv 中国地质大学(武汉)机械与电子信息学院湖北武汉430074 中国地质大学(武汉)自动化学院湖北武汉430074 教育部三峡库区地质灾害研究中心湖北武汉430074 Environmental Center for Resources Conservation Krasnoyarsk 660049Russia

针对地球天然脉冲电磁场信号的非平稳、非线性特点,本文采用基于聚类经验模态分解(EEMD)提取信号时频特性的方法,有效获得了芦山MS7.0地震前地球天然脉冲电磁场信号的时频分布特性、瞬时能量谱、能量集中分布的频段、最大振幅对应的时... 详细信息

针对地球天然脉冲电磁场信号的非平稳、非线性特点,本文采用基于聚类经验模态分解(EEMD)提取信号时频特性的方法,有效获得了芦山MS7.0地震前地球天然脉冲电磁场信号的时频分布特性、瞬时能量谱、能量集中分布的频段、最大振幅对应的时频分布等特性。对比经验模态分解(EMD)的希尔伯特-黄变换(HHT)方法,EEMD有效抑制了以往EMD分解过程中所出现的模态混叠问题。文章还将EEMD和傅里叶变换、小波变换进行了对比研究。结果表明,对于非平稳的地球天然脉冲电磁场数据,采用EEMD分解的HHT方法更能反映出原始数据的多种固有特性,便于进一步了解地震前地球天然脉冲电磁场的特点。

关键词：聚类经验模态分解希尔伯特-黄变换时频分析地球天然脉冲电磁场

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Resolution and contrast enhancement of laser-scanning multiphoton microscopy using thulium-doped upconversion nanoparticles

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Nano Research 2019年第12期12卷 2933-2940页

作者： alexey B.Kostyuk Artem D.vorotnov Andrey v.Ivanov Arthur B.volovetskiy Aleksandr v.Kruglov Lyudmila M.Sencha Liuen Liang Evgenii L.Guryev vladimir A.vodeneev Sergey M.Deyev Yiqing Lu Andrei v.Zvyagin Lobachevsky State University of Nizhny Novgorod Nizhny Novgorod 603950Russia Center of Biomedical Engineering Institute of Molecular MedicineSechenov UniversityMoscow 119991Russia ARC Centre of Excellence"Nanoscale BioPhotonics" Department of Physics and AstronomyMacquarie UniversitySydney 2109Australia Institute ofBioorganic Chemistry Russian Academy of SciencesMoscow 117997Russia

High-contrast optical imagi ng is achievable using phosphoresce nt labels to suppress the short-lived background due to the optical backscatterand autofluoresce ***,the long-lived phosphorescence is generally incompatible with high-speed laser-scan ning imaging ***,we show that upc on versi on nan oparticles of structure NaYF4:Yb co-doped with 8%Tm(8T-UCNP)in combi nation with a commerciallaser-scanning multiphoton microscopy are uniquely suited for labeling biological systems to acquire high-resolution images with the enhancedcon *** comparison with many phosphoresce nt labels,the 8T-UCNP emission lifetime of-15μs affords rapid image ***-order optical nonlinearity of the 8T-UCNP(n=4,as confirmed experimentally and theoretically)afforded pushing the resolution limitattain able with UCNPs to the *** contrast enha nceme nt was achieved by suppressing the backgro und using(i)ban dpassspectral filtering of the narrow emission peak of 8T-UCNP at 455-nm,and(ii)time-gating implemented with a time-correlated single-photon counting system that demonstrated the contrast enhancement of>2.5-fold of polyethyle neimine-coated 8T-UCNPs take n up by huma nbreast adeno carcinoma cells *** a result,discrete 8T-UCNP nan oparticles became clearly observable in the freshly excised splee ntissue of laboratory mice 15-min post in trave nous injectio n of an 8T-UCNP *** dem on strated approach paves the way forhigh-contrast,high-resoluti on,and high-speed multiphot on microscopy in challe nging envir onments of i ntense autofluorescence,exogenous staining,and turbidity,as typically occur in intravital imaging.

关键词： upconversion nanoparticles autofluorescence time-gated imaging scanning microscopy time-correlated single photon counting

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