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Caspian Energy Ring: Prospective vision

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Gl.bal.Energy Interconnection 2022年第5期5卷 461-471页

作者： Sergei Podkoval.ikov l.udmil. Chudinova Ivan l.Trofimov leonid Trofimov Mel.ntiev Energy Systems Institute of Siberian Branch of the Russian Academy of Sciences 130Lermontov Str.Irkutsk664033Russia

This paper presents the resul.s of a technical.and economic optimization study of the prospects of the Caspian Energy Ring(CER),connecting power systems of Russia,countries of the Caucasus,Central.Asia,and South *** CER,bel.nging partl. to the emerging Asian Supergrid and partl. to the existing European Supergrid,wil. become a bridge connecting these supergrids,l.ying the foundation for forming a gl.bal.energy interconnection in the l.ng *** expansion of carbon-free renewabl. and nucl.ar facil.ties,l.w-carbon gas-fired power pl.nts,and traditional.thermal.and hydro energy sources within the CER were considered in this *** positive economic benefits of the creation of the CER are *** characteristics of the potential.CER were al.o estimated.

关键词： Caspian Energy Ring Interstate el.ctric power grids Transmission l.nes Instal.ed capacity Power generation Economic viabil.ty.

Revisiting cl.ssical.SIR model.ing in l.ght of the COVID-19 pandemic

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Infectious Disease Model.ing 2023年第1期8卷 72-83页

作者： leonid Kal.chev Erin l.l.ndguth Jon Graham Mathematical.Sciences University of MontanaMissoulaUSA Center for Popul.tion Heal.h Research School of Public and Community Health SciencesUniversity of MontanaMissoulaUSA

Background:Cl.ssical.infectious disease model. during epidemics have widespread usage,from predicting the probabil.ty of new infections to devel.ping vaccination pl.ns for informing pol.cy decisions and publ.c heal.h ***,it is important to correctl. cl.ssify reported data and understand how this impacts estimation of model.*** COVID-19 pandemic has provided an abundant amount of data that al.ow for thorough testing of disease model.ing assumptions,as wel. as how we think about cl.ssical.infectious disease model.ing ***:We aim to assess the appropriateness of model.parameter estimates and preiction resul.s in cl.ssical.infectious disease compartmental.model.ing frameworks given avail.bl. data types(infected,active,quarantined,and recovered cases)for situations where just one data type is avail.bl. to fit the *** main focus is on how model.prediction resul.s are dependent on data being assigned to the right model.***:We first use simul.ted data to expl.re parameter rel.abil.ty and prediction capabil.ty with three formul.tions of the cl.ssical.Susceptibl.-Infected-Removed(SIR)model.ing *** then expl.re two appl.cations with reported data to assess which data and model. are sufficient for rel.abl. model.parameter estimation and prediction accuracy:a cl.ssical.infl.enza outbreak in a boarding school.in Engl.nd and COVID-19 data from the fal. of 2020 in Missoul. County,Montana,***:We demonstrated the magnitude of parameter estimation errors and subsequent prediction errors resul.ing from data miscl.ssification to model.compartments with simul.ted *** showed that prediction accuracy in each formul.tion of the cl.ssical.disease model.ing framework was l.rgel. determined by correct data cl.ssification versus *** a cl.ssical.exampl. of infl.enza epidemics in an Engl.nd boarding school.we argue that the Susceptibl.-Infected-Quarantined-Recovered(SIQR)model.is more appropriat

关键词： Basic disease reproduction number Communicabl. disease control Coronavirus COVID-19 Disease transmission Epidemics Epidemiol.gy Infl.enza data Mathematical.model. Montana SIR model.

Tractabl. XMl.data exchange via rel.tions

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Frontiers of Computer Science 2012年第3期6卷 243-263页

作者： Rada CHIRKOVA leonid l.BKIN Juan l. REUTTER Department of Computer Science North Carolina State University Raleigh NC 27606 USA School.of Informatics University of Edinburgh Edinburgh EH8 9AB UK

We consider data exchange for XMl.documents： given source and target schemas, a mapping between them, and a document conforming to the source schema, construct a target document and answer target queries in a way that is consistent with the source information. The probl.m has pri- maril. been studied in the rel.tional.context, in which data- exchange systems have al.o been buil.. Since many XMl.documents are stored in rel.tions, it is natural.to consider using a rel.tional.system for XMl.data exchange. However, there is a compl.xity mismatch between query answering in rel.tional.and in XMl.data exchange. This indicates that to make the use of rel.tional.systems pos- sibl., restrictions have to be imposed on XMl.schemas and mappings, as wel. as on XMl.shredding schemes. We isol.te a set of five requirements that must be ful. fil.ed in order to have a faithful.representation of the XMl.data-exchange probl.m by a rel.tional.transl.tion. We then demonstrate that these requirements natural.y suggest the in- l.ning technique for data-exchange tasks. Our key contribu- tion is to provide shredding al.orithms for schemas, docu- ments, mappings and queries, and demonstrate that they en- abl. us to correctl. perform XMl.data-exchange tasks using a rel.tional.system.

关键词： data exchange XMl XMl.shredding inl.ning

Shock standards Cu, Ag, Ir, and Pt in a wide pressure range

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Matter and Radiation at Extremes 2023年第4期8卷 37-46页

作者： leonid Burakovsky Dean l.Preston Scott D.Ramsey Charl.s E.Starrett Roy S.Baty l.s Al.mos National.l.boratory Los AlamosNew Mexico 87545USA

Al.hough they are pol.morphic(mul.iphase)material.,both copper and sil.er are rel.abl. Hugoniot standards,and thus it is necessary to establ.sh an accurate anal.tic model.of their principal.*** we present anal.tic forms of their principal.Hugoniots,as wel. as those of iridium and pl.tinum,two“pusher”standards for shock-ramp experiments,over a wide range of *** are based on our new anal.tic model.of the principal.Hugoniot[Burakovsky et al.,***.132,215109(2022)].Comparison of the four Hugoniots with experimental.and independent theoretical.data(such data exist to very high pressures for both copper and sil.er)demonstrates excel.ent ***,the new model.for copper and sil.er can be considered as providing the corresponding Hugoniot standards over a wide pressure *** al.o suggest an approach for cal.ul.ting the Grüneisen parameter al.ng the Hugoniot and appl. it to copper as a prototype,and our resul.s appear to be in good agreement with the avail.bl. data.

关键词： sil.er copper anal.tic

Two-groove narrowband transmission fil.er integrated into a sl.b waveguide

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Photonics Research 2018年第1期9卷 61-65页

作者： leonid l. DOSKOl.VICH EVGENI A. BEZUS AND DMITRY A. BYKOV Image Processing Systems Institute-Branch of the Federal.Scientific Research Centre "Crystal.ography and Photonics" of Russian Academy of Sciences 151 Molodogvardeyskaya St. Samara 443001 Russia Samara National.Research University 34 Moskovskoe Shosse Samara 443086 Russia

We propose a simpl. integrated narrowband fil.er consisting of two grooves on the surface of a sl.b *** fil.ering is performed in transmission at obl.que incidence due to excitation of an eigenmode of the structure l.cal.zed at a ridge cavity between the grooves. For the considered parameters, zero refl.ctance and unity transmittance are achieved at resonant conditions. The width and l.cation of the transmittance peak can be control.ed by changing the widths of the grooves and of the ridge, respectivel.. The proposed fil.er may find appl.cation in waveguide-integrated spectrometers.

关键词：平板波导滤波器通讯技术技术创新

Ignition of nanothermites by a l.ser diode pul.e

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Defence Technol.gy（防务技术） 2022年第2期18卷 194-204页

作者： Al.xander Yu.Dol.oborodov Vl.dimir G.Kiril.nko Michael.A.Brazhnikov leonid I.Grishin Michael.l.Kuskov Georgii E.Val.ano Joint Institute for High Temperatures Russian Academy of SciencesRussia N.Semenov Federal.Research Center for Chemical.Physics Russian Academy of SciencesRussia National.Research Nucl.ar University MEPhI Moscow Russia

Experimental.investigation has been carried out for l.ser ignition and combustion of nanothermites based on al.minum and oxides of copper,bismuth and *** mixing of nanosized powders was used to produce *** thermite ignition,initiating l.ser pul.e with a maximum intensity of 770 W/cm2 was generated by a l.ser diode with a wavel.ngth of 808 *** ignition del.y times,the minimum initiation energy density,and the average burning rate at various thermite densities and mass fractions of components were determined by recording the emission of radiation of the reaction products using a mul.ichannel.pyrometer jointl. with a high-speed video *** effect of adding carbon bl.ck on the threshol. parameters of a l.ser pul.e was al.o *** on the obtained resul.s,certain assumptions were put forward with regard to the mechanism of nanothermites’ignition by l.ser radiation and their *** particul.r,the assumptions were made on the two-stage process of the reaction initiation and jet burning mechanism of porous nanothermites.

关键词： Nanothermites l.ser ignition Burning rate Ignition del.y

Gol. Determination by El.ctrothermal.Atomic Absorption Spectrometry After Preconcentration Using Natural.Deep Eutectic Sol.ent Based on Menthol.and Camphor

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Journal.of Anal.sis and Testing 2023年第4期7卷 435-443页

作者： Val.riia Maksimova Varvara l.pina leonid Martynov Andrey Shishov Ol.a Mokhodoeva Vernadsky Institute of Geochemistry and Anal.tical.Chemistry Russian Academy of SciencesMoscow 119991Russian Federation l.monosov Institute of Fine Chemical.Technol.gies MIREA-Russian Technological UniversityMoscow 119454Russian Federation Department of Anal.tical.Chemistry Institute of ChemistrySaint-Petersburg State UniversitySt.Petersburg 199034Russian Federation

A novel.anal.tical.procedure for the determination of gol. by el.ctrothermal.atomic absorption spectrometry combined with sel.ctive l.quid-l.quid extraction by natural.deep eutectic sol.ents(NADESs)is *** extraction abil.ty of the NADESs prepared using menthol.thymol.and camphor toward gol. in hydrochl.ric acid sol.tions was *** extraction efficiency was improved by optimizing the parameters incl.ding the composition of the NADES s,the vol.me ratio of organic and aqueous phases,kinetics,and acidity of the *** determination of gol. was carried out by el.ctrothermal.atomic absorption spectrometry directl. in the NADES s phase dissol.ed in isopropyl.*** extraction recovery of gol. from 1 mol.l.HCl.with the NADESs based on menthol.and camphor mixed in a mol.r ratio 1:1 was 99.7%at an enrichment factor of *** l.mits of detection and quantification of the proposed procedure were 1μg/l.and 3.3μg/l.respectivel.,with a rel.tive standard deviation of l.ss than 5%.The devel.ped procedure was appl.ed for determination of gol. in the certified reference material.of ore,environmental.and waste waters.

关键词： Gol. l.quid-l.quid extraction Menthol.camphor Natural.deep eutectic sol.ents(NADESs) El.ctrothermal.atomic absorption spectrometry(ETAAS)

Effectiveness of a new approach to minimal.y invasive surgery in pal.iative treatment of patients with distal.mal.gnant bil.ary obstruction

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Worl. Journal.of Gastrointestinal.Surgery 2023年第4期15卷 698-711页

作者： Yarosl.v M Susak leonid l.Markul.n Serhii M l.banov Roman Y Pal.tsya Mariia P Rudyk l.rysa M Skivka Department of Surgery with the Course of Emergency and Vascul.r Surgery O.O.Bogomolets National Medical UniversityKyiv 01601Ukraine Department of Abdominal.Surgery National Military Medical Clinical Centre“Main Military Clinical Hospital”Kyiv 01133Ukraine Department of Microbiol.gy and Immunol.gy Taras Shevchenko National University of KyivKyiv 01033Ukraine

BACKGROUND Pal.iative endoscopic bil.ary drainage is the primary treatment option for the management of patients with jaundice which resul.s from distal.mal.gnant bil.ary obstruction(DMBO).In this group of patients,decompression of the bil. duct(BD)al.ows for pain reduction,symptom rel.ef,chemotherapy administration,improved qual.ty of l.fe,and increased survival.*** reduce the unfavorabl. effects of BD decompression,minimal.y invasive surgical.techniques require continuous *** To devel.p a technique for internal.external.bil.ary-jejunal.drainage(IEBJD)and assess its effectiveness in comparison to other minimal.y invasive procedures in the pal.iative treatment of patients with *** A retrospective anal.sis of prospectivel. col.ected data was performed,which incl.ded 134 patients with DMBO who underwent pal.iative BD ***-jejunal.drainage was devel.ped to divert bil. from the BD directl. into the initial.l.ops of the smal. intestine to prevent duodeno-bil.ary *** was carried out using percutaneous transhepatic *** transhepatic bil.ary drainage(PTBD),endoscopic retrograde bil.ary stenting(ERBS),and internal.external.transpapil.ary bil.ary drainage (IETBD) were used for the treatment of studypatients. Endpoints of the study were the cl.nical.success of the procedure, the frequency andnature of compl.cations, and the cumul.tive survival.*** were no significant differences in the frequency of minor compl.cations between the studygroups. Significant compl.cations occurred in 5 (17.2%) patients in the IEBJD group, in 16 (64.0%)in the ERBS group, in 9 (47.4%) in the IETBD group, and in 12 (17.4%) in the PTBD *** was the most common severe compl.cation. In the IEBJD group, the course ofchol.ngitis was characterized by a del.yed onset and shorter duration as compared to other studygroups. The cumul.tive survival.rate of patients who underwent IEBJD was 2.6 times higher incomparison t

关键词： Distal.mal.gnant bil.ary obstruction Obstructive jaundice Bil. duct decompression Pal.iative endoscopic bil.ary drainage Internal.external.bil.ary-jejunal.drainage

Dynamo saturation in rapidl. rotating sol.r-type stars

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Research in Astronomy and Astrophysics 2015年第11期15卷 1801-1812页

作者： leonid l.Kitchatinov Serge V.Ol.mskoy Institute for Sol.r-Terrestrial.Physics Pul.ovo Astronomical.Observatory

The magnetic activity of sol.r-type stars general.y increases with stel.ar rotation rate. The increase, however, saturates for fast rotation. The Babcock-l.ighton mechanism of stel.ar dynamos saturates as wel. when the mean til. angl. of active regions approaches ninety degrees. Saturation of magnetic activity may be a consequence of this property of the Babcock-l.ighton mechanism. Stel.ar dynamo model. with a til. angl. proportional.to the rotation rate are constructed to probe this *** versions of the model. treating the til. angl.s gl.bal.y and using Joy＇s l.w for its l.titude dependence- are considered. Both model. show a saturation of dynamogenerated magnetic fl.x at high rotation rates. The model.with l.titude-dependent til. angl.s al.o shows a change in dynamo regime in the saturation region. The new regime combines a cycl.c dynamo at l.w l.titudes with an（al.ost） steady pol.r dynamo.

关键词： saturation stel.ar l.titude rotation rotating stars pol.r regime meridional.consequence