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Creating technical heritage object replicas in a virtual environment

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Frontiers of Mechanical Engineering 2016年第1期11卷 108-115页

作者： olga EGOROVA Dmitry sHCHERBININ Theory of Mechanisms and Machines Department Bauman Moscow State Technical University Moscow 10505 Russia s. I. Vavilov Institute for the History of science and Technology of RAs Moscow Russia

The paper presents innovative informatics methods for creating virtual technical heritage replicas, which are of significant scientific and practical importance not only to researchers but to the public in general. By performing 3D modeling and animation of aircrafts, spaceships, architectural-engineering buildings, and other technical objects, the process of teaming is achieved while promoting the preservation of the replicas for future generations. Modem approaches based on the wide usage of computer technologies attract a greater number of young people to explore the history of science and technology and renew their interest in the field of mechanical engineering.

关键词： 3D document history of science and technology technical knowledge popularization virtual environment replica mechanism and machine science (MMs)

Fractionation and fixation of rare earth elements in soils:Effect of spiking with lanthanum,cerium,and neodymium chlorides

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Journal of Rare Earths 2022年第1期40卷 143-152页

作者： olga B.Rogova Petr s.Fedotov Rustam Kh.Dzhenloda Vasily K.Karandashev V.V.Dokuchaev soil science Institute Russian Academy of Sciences7 Building 2 Pyzhevskiy Side StreetMoscow119017Russia V.I.Vernadsky Institute of Geochemistry and Analytical Chemistry Russian Academy of Sciences19 Kosygin StreetMoscow119991 Russia National University of science and Technology'MIsis' 4 Leninsky ProspectMoscow119049Russia The Institute of Microelectronics Technology and High-Purity Materials Russian Academy of Sciences6 Institution StreetChernogolovka142432Russia

Industrial and agricultural activities lead to the release of rare earth elements(REEs)in wastewater and aquatic ecosystems,and their accumulation in ***,the behavior of REEs in soils remains somewhat *** the present work the fractionation and fixation of REEs in soddy-podzolic and chernozem soils spiked with La,Ce,and Nd chlorides were studied using dynamic(continuous flow)extraction,which allows natural conditions to be mimicked and artefacts to be *** eluents applied are aimed to dissolve exchangeable,specifically sorbed,bound to Mn oxides,bound to metal-organic complexes,and bound to amorphous and poorly ordered Fe/Al oxides fractions extractable by 0.05 mol/L Ca(NO_(3))2,0.43 mol/L CH_(3)COOH,0.1 mol/L NH_(2)OH·HCl,0.1 mol/L K_(4)P_(2)O_(7) at pH 11,and 0.1 mol/L(NH4)_(2)C_(2)O_(4) at pH 3.2,*** is found that the fixations of added La,Ce,and Nd in the form of metal-organic complexes is predominant for both types of soils:35%-38%in soddy-podzolic soil and 50%-79%in *** fixation of added elements in the first three fractions(exchangeable,specifically sorbed,and bound to Mn oxides)is significant for soddy-podzolic soil(5%-25%).For chernozem,the relative contents of added Ce and Nd in these fractions are nearly *** the content of exchangeable La is notable,about 5%.Adding any of three elements(La,Ce,or Nd)at the level of100 mg/kg to an initial sample results in changing the fractionation and bioaccessibility of other REEs present in *** contents increase in the first three fractions and decrease in fifth(oxalate extractable)fraction for both soddy-podzolic soil and *** main difference is the behavior of REEs in pyrophosphate extractable *** soddy-podzolic soil,adding La,Ce,or Nd results in decreasing the contents of other REEs associated with organic *** chernozem,on the contrary,the contents of REEs in the form of metal-organic complexes slightly *** processes

关键词： Rare earth elements soddy-podzolic soil Chernozem Fractionation Competitive binding

Mathematical modeling of nanodispersed hardening of FCC materials

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Acta Metallurgica sinica(English Letters) 2018年第12期31卷 1297-1304页

作者： Oleg Matvienko olga Daneyko Tatyana Kovalevskaya National Research Tomsk state University TomskRussia 634050 Tomsk state University of Architecture and Building TomskRussia 634003

The plastic deformation of the pipe made of Cu-based alloy hardened by incoherent nanoparticles and subjected to theuniform internal pressure was investigated. The limits of elastic and plastic resistance are determined. The insignificantexcess in the limit of the elastic resistance enables the plastic deformation in the most part of the pipe wall. The densities ofshear-forming dislocations and prismatic dislocation loops are higher in alloys strengthened with coarse particles than inalloys strengthened with fine particles. At small distances between the strengthening particles, this effect is the mostpronounced.

关键词： Deformation Dislocation Dispersion-strengthening - Nanoparticles Hardening stress strain Elastic-plastic deformation Pipe

Transparent BoundaryConditions for ElasticAnisotropic VTIMedia:Axially symmetric Case

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Communications in Computational Physics 2012年第2期11卷 541-554页

作者： olga Podgornova schlumberger Moscow Research 13Pudovkina119285Russia.

Transparent boundary conditions(TBCs)for anisotropic vertical transverse isotropic VTI medium are formulated for the axially symmetric *** high accuracy of the derived TBCs and their long-time stability are demonstrated in numerical *** TBCs are represented in terms of the vertical component of the velocity vector and tangential component of the stress tensor that facilitates the easy implementation of the boundary condition into the finite-difference staggered-grid scheme.

关键词： Nonreflecting boundary conditions anisotropy elastodynamics

Role of presynaptic calcium stores for neural network dysfunction in Alzheimer＇s disease

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Neural Regeneration Research 2018年第6期13卷 977-978页

作者： Chommanad Lerdkrai olga Garaschuk Institute of Physiology Department Neurophysiology Eberhard KarlsUniversity of Tubingen Tubingen Germany Department of Physiology Faculty of Veterinary Medicine Kasetsart UniversityBangkok Thailand

Alzheimer’s disease（AD）is the most common form of dementia representing a major problem for public *** 2017 there were an estimated 50 million patients worldwide and this number is expected to almost double every 2... 详细信息

关键词： In Role of presynaptic calcium stores for neural network dysfunction in Alzheimer’s disease AD

A longitudinal assessment of retinal function and structure in the APP/Ps1 transgenic mouse model of Alzheimer’s disease

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Translational Neurodegeneration 2019年第1期8卷 372-381页

作者： Dana Georgevsky stephanie Retsas Newsha Raoufi olga shimoni s.Mojtaba Golzan Vision science group Graduate School of Health(Orthoptics Discipline)University of Technology Sydney15 BroadwayUltimoSydneyNSW 2007Australia Institute of Biomedical Materials&Devices(IBMD) Faculty of ScienceUniversity of Technology Sydney15 BroadwayUltimoSydneyNSW 2007Australia

Background:A great body of evidence suggests that there are retinal functional and structural changes that occur in Alzheimer’s disease(AD).However,whether such changes are primary or secondary remains to be *** studied a range of retinal functional and structural parameters in association with AD-specific pathophysiological markers in the double transgenic APP/Ps1 and control mice across ***:Electroretinogram(ERG)and optical coherence tomography(OCT)was performed in APP/Ps1 and wild type(WT)control mice every 3 months from 3 to 12 months of *** functional assessment,the a-and b-wave of the ERG,amplitude of oscillatory potentials(OP)and the positive scotopic threshold response(psTR)were quantified at each time *** structural assessment,the inner and outer retinal thickness was segmented and measured from OCT *** memory was evaluated at 6,9 and 12 months of age using the novel object recognition *** beta(Aβ)distribution in the hippocampus and the retina were visualised at 3,6 and 12 months of *** intra-group analysis was performed to study rate of change for each parameter between the two ***:Inter-group analysis revealed a significant difference in b-wave and OPs of APP/Ps1 compared to WT controls starting from 3 months(ps also a significant difference in the amplitude of psTR between the two groups starting from 6 months(psignificant difference in the inner retinal thickness,between the two groups,was observed starting from 9 months(psions:We observed an age-related decline in retinal functional and structural parameters in both APP/Ps1 and WT controls,however,inter-group analysis revealed that inner retinal functional and structural decline is exacerbated in APP/Ps1 mice,and that retinal functional changes precede structural changes in this *** studies are required to confirm whether such phenomenon occurs in humans and if studying ret

关键词： Retinal function Retinal structure Retinal imaging Biomarkers Alzheimer’s disease Early assessment

Fundamentals of Presbyopia: visual processing and binocularity in its transformation

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Eye and Vision 2018年第1期5卷 1-10页

作者： olga I.Rozanova Andrey G.shchuko Tatyana s.Mischenko Irkutsk branch of s.Fyodorov Eye Microsurgery Federal state Institution IrkutskRussian Federation Irkutsk state Medical University IrkutskRussian Federation

Background:The accommodation has considerable interactions with the pupil response,vergence response and *** transformation of visual reception processing and the changes of the binocular cooperation during the presbyopia development are still poorly ***,the regularities of visual system violation in the presbyopia formation need to be *** study aims to reveal the transformation of visual reception processing and to determine the role of disturbances in binocular interactions in presbyopia ***:This study included 60 people with emmetropic refraction,uncorrected distance visual acuity 1.0 or higher(decimal scale),normal color perception,without concomitant *** first group consisted of 30 people(from 18 to 27 years old)without presbyopia,the second cohort comprised 30 patients(from 45 to 55 years old)with *** eyeball anatomy and optics were evaluated using ultrasound biomicroscopy,aberrometry,and *** functional state of the visual system was investigated under monocular and binocular *** registration of the disparate fusional reflex limits was performed by the original technic using a diploptic device which facilitated investigation of the binocular interaction under natural conditions without the accommodation response,but with the different vergence *** disparate fusional reflex was analyzed using the proximal and distal fusion borders,and the convergence and divergence fusion *** calculation of the area of binocularity field was performed in ***:The presbyopia formation is characterized by a change in an intraocular anatomy,optics,visual processing,and *** processes of binocular interaction inhibition make a significant contribution to the misalignment of the visual *** modification of the proximal,distal and convergence fusion borders was *** was revealed that 87%of the presbyopic patients had binocularity sh

关键词： Presbyopia Binocularity Visual processing Visual reception

Retrieval of Volcanic sulfate Aerosols Optical Parameters from AHI Radiometer Data

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Advances in Atmospheric sciences 2024年第10期41卷 1953-1968页

作者： Andrei FILEI olga GIRINA Aleksei sOROKIN Far-Eastern Center of state Research Center for space Hydrometeorology«Planeta» Khabarovsk 680000Russia Institute of Volcanology and seismology Far Eastern Branch of the Russian Academy of sciences Petropavlovsk-Kamchatsky 683006Russia Computing Center of the Far Eastern Branch of the Russian Academy of sciences Khabarovsk 680000Russia

This paper presents a method for retrieving optical parameters from volcanic sulfate aerosols from the AHI radiometer on board the Himawari-8 *** proposed method is based on optical models for various mixtures of aerosol components from volcanic clouds,including ash particles,ice crystals,water drops,and sulfate aerosol *** application of multi-component optical models of various aerosol compositions allows for the optical thickness and mass loading of sulfate aerosol to be estimated in the sulfuric cloud formed after the Karymsky volcano eruption on 3 November 2021.A comprehensive analysis of the brightness temperatures of the sulfuric cloud in the infrared bands was performed,which revealed that the cloud was composed of a mixture of sulfate aerosol and water *** models of various aerosol compositions allows for the satellite-based estimation of optical parameters not only for sulfate aerosol but also for the whole aerosol mixture.

关键词： H_(2)sO_(4) volcano Himawari-8 mass loading volcanic ash optical thickness the Karymsky volcano

Visual Voltammogram at an Array of Closed Bipolar Electrodes in a Ladder Configuration

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Journal of Analysis and Testing 2019年第2期3卷 150-159页

作者： Janis s.Borchers olga Riusech Eric Rasmussen Robbyn K.Anand Department of Chemistry Iowa State University1605 Gilman Hall2415 Osborn DriveAmesIA 50011USA

In this paper,we report a method for obtaining a visual voltammogram at a linear array of closed wireless bipolar electrodes(BPEs).This advancement is significant,because the visual voltammogram captures the entire current-potential(i-E)relationship of a faradaic reaction in one image and is continuously generated over ***,we anticipate that this method will allow monitoring in redox systems that change over ***,the use of a linear array of BPEs eliminates the need to use a potentiostat and can be carried out with a simple DC power *** experimental and numerical results demonstrate that the visual voltammogram is similar to a linear sweep voltammogram and therefore,information about the faradaic process can be extracted from the wave position,height,and shape.

关键词： Bipolar electrochemistry Voltammetry Electrogenerated chemiluminescence Visual voltammogram Flow cell