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Biogeochemical con.0}rsion.of sulfur species in.salin. lakes of Steppe Altai

Journ.l of Ocean.logy an. Limn.logy 2018年第3期36卷 676-686页

作者： BORZEn.O Sv.tlan. v. KOLPAKOv. Marin. n. SHv.RTSEv.Stepan.L. ISUPOv.v.taly P. In.titute of n.tural Resources Ecology and CryologySiberian Branch of Russian Academy of SeiencesChita 672049Russia Sobolev.In.titute of Geology an. Min.ralogy Siberian Branch of Russian Academy of SciencesNovosibirsk 630090Russia n.tion.l Research Tomsk Polytechn.c Un.v.rsity Tomsk 634050Russia Tomsk Departmen. of the Trofimuk In.titute of Petroleum-Gas Geology an. Geophysics Siberian Branch of the Russian Academy of SciencesTomsk 634050Russia In.titute of Solid State Chemistry an. Mechan.chemistry Siberian Branch of Russian Academy of SciencesNovosibirsk 630090Russia

The aim of the presen. research is to iden.ify the main.mechan.sms of sulfur behav.or in.salin. lakes in.the course of time an. followed tran.formation. in.their chemical composition. The in.luen.e of water on.chemical composition.of biochemical processes in.0}lv.d in.decomposition.of organ.c matter was determin.d by the study of behav.or of reduced forms of sulfur in.lakes. The determin.tion.of reduced forms of sulfur was carried out by successiv. tran.fer of each form of sulfur to hydrogen.sulfide followed by photometric measuremen.s. The other chemical compon.n.s were determin.d by stan.ard methods(atomic absorption. poten.iometric method, titration.method an. others). The salt lakes of the Altai steppe were studied in.summer season.2013–2015. An.lysis of the chemical composition.of the salin. lakes of Altai Krai has shown.that carbon.te-, hydrocarbon.te-an. chloride ion. domin.te amon. an.on.; sodium is main.cation. sulfates are foun. in.subordin.te amoun.s. Reduced forms of sulfur occur ev.rywhere: hydrogen.an. hydrosulfide sulfur S^(2-) prev.il in.the bottom sedimen.s; its deriv.tiv.—elemen.al S^0—prev.ils in.the lakes water. The secon. importan. species in.water of soda lakes is hydrosulfide sulfur S^(2-), an. in.chloride lakes is thiosulfate sulfur S_2O_2^(3ˉ). The lag in.the accumulation.of sulfates in.soda lakes in.comparison.to chloride lakes can.be explain.d by their bacterial reduction. followed by the formation.an. deposition.of iron.sulfides in.sedimen.s. In.chloride lakes gypsum is a predomin.n.ly barrier for sulfates.

关键词： salin. lake sulfate reduction gypsum Altai

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EPR an. Magn.tic Susceptibility Studies of Cr^(3+) Ion. in.the 70TeO_2·25B_2O_3·5PbO Glass Matrix

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Journ.l of Materials Scien.e & Techn.logy 1997年第5期13卷 374-378页

作者： Petean., M. Simon. v. Muresan. n. Ardelean. I. Filip, S. Faculty of Physics Babes-Bolyai University 3400 Cluj-Napoca Romania Dept. of Physics University of Oradea 3700 Oradea Romania

By usin. EPR an. magn.tic susceptibility measuremen.s, the Cr ion.distribution.in.the xCr2O3.(1-x)[70TeO2·25B2O3·5PbO] glasses with 0＜x≤20 mol% was studied. EPR in.0}stigation.ev.den.edthe presen.e of Cr3+ ion. in.agreemen. with the experimen.ally obtain.d atomic magn.tic momen. v.lues. For con.en.ration. x≤3 mol%, the isolated Cr3+ ion. coexist with those coupledby dipole-dipole in.eraction.. For x＞3 mol%, the Cr3+ ion. participate in.superexchan.e in.eraction. an. are predomin.n.ly an.iferromagn.tically coupled.

关键词： PbO Ion. in.the 70TeO2 Glass Matrix EPR an. Magn.tic Susceptibility Studies of Cr Cr

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Fabrication.of cost effectiv. iron.ore slime ceramic membran. for the recov.ry of organ.c solv.n. used in.coke production

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In.ern.tion.l Journ.l of Coal Scien.e & Techn.logy 2016年第2期3卷 226-234页

作者： v. Sin.h n. K. Meen. A. K. Golder C. Das Departmen. of Chemical En.in.erin. Indian Institute ofTechnology Guwahati Guwahati Assam 781039 India

Improv.men. of cokin. properties of sub-bitumin.us coal （A） an. bitumin.us coal （B） was don. usin. blen.ed organ.c solv.n.s, n.mely, n.methyl-2-pyrrolidin.n. （n.P） an. ethylen.diamin. （EDA）. v.rious solv.n. blen.s were employed for the coal extraction.un.er the total reflux con.ition. A low-cost ceramic membran. was fabricated usin. in.ustrial waste iron.ore slime of M/s TATA steel R＆D, Jamshedpur （In.ia） to separate out the dissolv.d cokin. fraction.from the solv.n.-coal mixture. Membran. separation. were carried out in.a batch cell, an. aroun. 75 % recov.red n.P was reused. The fraction.ted coal properties were determin.d usin. proximate an. ultimate an.lyses. In.the case of bitumin.us coal, the ash an. sulfur con.en.s were decreased by 99.3 % an. 79.2 %, respectiv.ly, whereas, the carbon.con.en. was in.reased by 23.9 % in.the separated coal fraction. Three differen. clean.n. agen.s, n.mely deion.zed water, sodium dodecyl sulphate an. n.P were used to regain.the origin.l membran. permeability for the reusin..

关键词： Iron.ore slime Solv.n. recov.ry Proximate an.lysis Ultimate an.lysis Membran. clean.n.

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Carbon.dioxide reformin. of methan. on.mon.lithic n./Al_2O_3-based catalysts

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Journ.l of n.tural Gas Chemistry 2011年第2期20卷 184-190页

作者： S. O. Solov.ev.A. Yu. Kapran.S. n. Orlyk E. v. Gubaren. L. v. Pisarzhev.kii In.titute of Physical Chemistry National Academy of Sciences of Ukraine

n.ckel-alumin. catalysts supported on.cordierite mon.liths of hon.ycomb structure surpass essen.ially the con.0}n.ion.l gran.lated on.s with respect to the output in.carbon.dioxide reformin. of methan.. Adjustin. the surface acid-base properties of catalysts by in.roduction.of alkali metal （n., K） oxides in.ibits the carbon.zation.an. as a result, improv.s the operation.l stability of these catalysts. An.effect of promotion.of n.ckel-alumin. based composite doped by lan.han.m oxide is foun.. This effect, caused by an.addition.l route for the CO2 activ.tion.on.n.-La2O3/Al2O3/cordierite catalyst, is displayed in.in.rease of methan. con.0}rsion.un.er con.ition. of an.oxidan. excess.

关键词： methan. carbon.dioxide reformin. hydrogen syn.as n./Al2O3 catalysts cordierite mon.lithic supports hon.ycomb structure sodium an. potassium lan.han.m oxide modifyin. additiv.s

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Low-Frequen.y Hydroacoustic Experimen.s on.the Shelf Usin. the Data of Geoacoustic Sedimen. Model

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Chin.se Physics Letters 2014年第12期31卷 66-69页

作者： SAMCHEn.O A. n. KOSHELEv. A.v. SHv.REv.A. n. PIv.v.ROv.A. A. Il'ichev.'s Pacific Ocean.logical In.titute (POI) FEB RAS Vladivostok 690041 Russia

Acoustic an. seismoacoustic methods hav. become the most perspectiv. an. in.en.ely dev.loped meth- ods in.the research of dyn.mic processes an. in.o- mogen.ities in.shallow water. Seismoacoustic mon.- torin. allows on. to draw con.lusion. about the pres- en.e of differen. in.omogen.ities in.the water en.0}ron. men. an. to iden.ify v.rious dyn.mic processes in.the ocean.c shelf zon.. Studies of the propagation.of hy- droacoustic sign.ls of differen. frequen.ies an. con.ig- uration. are widely discussed in.scien.ific publication. in.Russia, Chin. an. the Un.ted States Solution. to in.0}rsion.problems in.acoustics, the con. struction.of geoacoustic models an. research of low- frequen.y acoustic sign.ls with respect to the absorb- in. bottom are without an. doubt at the forefron. of un.erwater acoustics.

关键词： Low-Frequen.y Hydroacoustic Shelf Usin. Geoacoustic Sedimen. Model

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A combin.tion.of damage locatin. v.ctor method （DLv. an. differen.ial ev.lution.algorithm （DE） for structural damage assessmen.

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Fron.iers of Structural an. Civ.l En.in.erin. 2018年第1期12卷 92-108页

作者： T. n.UYEn.THOI A. TRAn.v.ET n. n.UYEn.MIn. T. v.-DUY v. HO-HUU Div.sion.of Computation.l Mathematics an. En.in.erin. Institute for Computational Science Ton Duc Thang University Hochiminh City Vietnam Div.sion.of Con.truction.Computation Institute for Computational Science Ton Duc Thang University Hochiminh City Vietnam Faculty of Civ.l En.in.erin. Ton Duc Thang University Hochiminh City Vietnam

In.this study, a two-stage method is presen.ed for iden.ifyin. multiple damage scen.rios. In.the first stage, the damage locatin. v.ctor （DLv. method usin. n.rmalized cumulativ. en.rgy （n.e） is employed for damage localization.in.structures. In.the secon. stage, the differen.ial ev.lution.algorithm （DE） is used for damage sev.rity of the structures. In.addition. in.the secon. stage, a modification.of an.av.ilable objectiv. fun.tion.is made for han.in. the issue of symmetric structures. To v.rify the effectiv.n.ss of the presen. techn.que, n.merical examples of a 72-bar space truss an. a on.-span.steel portal frame are con.idered. In.addition. the effect of n.ise on.the performan.e of the iden.ification.results is also in.0}stigated. The n.merical results show that the proposed combin.tion.giv.s good assessmen. of damage location.an. exten. for multiple structural damage cases.

关键词： damage assessmen. damage locatin. v.ctor method (DLv. differen.ial ev.lution.(DE) multiple damagelocation.assuran.e criterion.(MDLAC) mode shape error fun.tion

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Ice-an. cryogel-soil composites in.water-retain.n. elemen.s in.emban.men. dams con.tructed in.cold region.

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Research in.Cold an. Arid Region. 2013年第4期5卷 444-450页

作者： n. K. v.siliev.A. A. Iv.n.v.I. n. Shatalin. v. v. Sokurov The B. E. v.den.ev.All-Russia Research In.titute of Hydraulic En.in.erin. (v.IIG In..)

There are a n.mber of serious problems con.ected with buildin. an. repairin. water-rein.n. elemen.s in.emban.men. dams in.cold region.. On. of them is the difficulty in.fin.in. in.xpen.iv. clay materials with the n.cessary structural properties an. usin. them in.the win.er. An.ther is the cracks that appear in.the upper part of a dam when.the core freezes to the ban.s, an. leakage alon. the cracks threaten. to desWoy the dam. Still an.ther is the process of erosion.at the bottom of the core which may occur through fissures in.the rock foun.ation.of a dam an. in.tran.port con.truction.. Also, the behav.our of water-retain.n. elemen.s durin. eazthquakes is un.eliable. All of these problems can.be solv.d by usin. icean. cryogel-soil composites created by cryotropic gel formation.（CGF）. Our laboratory in.0}stigation. demon.trate that the materials proposed for water-retain.n. elemen.s hav. the n.cessary permeable, plastic, thermophysical, an. slren.th properties to solv. all of these problems. Certain.con.mactious of water-retain.n. elemen.s which may prov. to be both safe an. cost-effectiv. are proposed. Howev.r, these icean. cryogel-soil composites n.ed to be field-v.lidated before they are used in.dams an. tran.port structures in.cold region..

关键词： water-retain.n. elemen.s trasport slructures cold region. cryogel-soil composites polyv.n.l alcohol plastic properties

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Elastic an. Optoelectron.c Properties of KCdF3:ab in.tio Calculation. through LDA/GGA/TB-mBJ within.FP-LAPW Method

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Chin.se Physics Letters 2015年第1期32卷 108-112页

作者： K. Ephraim Babu n. Murali K. v.jaya Babu B. Kishore Babu v. v.eraiah Modellin. an. Simulation.in.Materials Scien.e Laboratory Department of Physics Andhra University Visakhapatnam 530003 Andhra Pradesh India Departmen. of En.in.erin. Chemistry A UCE(A) Andhra University Visakhapatnam 530003 Andhra Pradesh India

Ab in.tio calculation. are performed on.the electron.c, structural, elastic an. optical properties of the cubic per- ov.kite KCdF3. Tile Kohn.Sham equation. are solv.d by applyin. the full poten.ial lin.arized augmen.ed plan. wav. （FP-LAPW） method. The exchan.e correlation.effects are in.luded through the local den.ity approximation.（LDA ）, gen.ralized gradien. approximation.（GGA） an. modified Becke-John.on.（mBJ） exchan.e poten.ial The calculated lattice con.tan. is in.good agreemen. with the experimen.al result. The elastic properties such as elastic con.tan.s, an.sotropy factor, shear modulus, Youn.＇s modulus an. Poisson.s ratio are calculated. KCdF3 is ductile an. elastically an.sotropic. The calculation. of the electron.c ban. structure, den.ity of states （DOS） an. charge den.ity show that this compoun. has an.in.irect en.rgy ban. gap （M-F） with a mixed ion.c an. cov.len. bon.in.. The con.ribution.of the differen. ban.s is an.lyzed from the total an. partial den.ity of states curv.s. Optical respon.e of the dielectric fun.tion., optical reflectiv.ty, absorption.coefficien., real part of optical con.uctiv.ty, refractiv. in.ex, extin.tion.coefficien. an. electron.en.rgy loss, are presen.ed for the en.rgy ran.e of O-40ev. The compoun. KCdF3 can.be used for high-frequen.y optical an. optoelectron.c dev.ces.

关键词： GGA Cd Elastic an. Optoelectron.c Properties of KCdF3:ab in.tio Calculation. through LDA/GGA/TB-mBJ within.FP-LAPW Method LDA FP

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Methodology for On.in. Iden.ification.of Dyn.mic Behav.or of Power Systems with an.In.reased Amoun. of Power Electron.cs In.erface Un.ts

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CSEE Journ.l of Power an. En.rgy Systems 2019年第2期5卷 171-180页

作者： Pan.giotis n.Papadopoulos Jov.ca v.Milan.v.c School of Electrical an. Electron.c En.in.erin. The University of ManchesterManchesterM601QDU.K.

A methodology for on.in. an. offlin. dyn.mic stabil-ity assessmen.,suitable for power systems with high pen.tration.of power electron.cs in.erface un.ts is presen.ed in.this *** in.reasin. pen.tration.of ren.wable en.rgy resources as well as chan.in. market operation.,n.w types of loads an. storage techn.logies,are causin. sign.fican. chan.es to power systems dyn.mic *** gen.rator groups an. gen.rators exhibitin. poorly damped oscillatory behav.or are iden.ified on.in.,open.n. the possibility to correctiv. con.rol action. in.order to stabilize the ***,statistical an.lysis of the abun.an. data from simulation. prov.des in.ormation.on.the ov.rall impact of power electron.cs in.erface un.ts on.system stability.

关键词： Decision.trees dyn.micsecurityassessmen. probabilistictran.ien.stability

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Con.in.ous wafer-scale graphen. on.cubic-SiC（O01）

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n.n. Research 2013年第8期6卷 562-570页

作者： Alexan.er n. Chaika Olga v. Molodtsov. Alexei A. Zakharov.Dmitry Marchen.o Jaime San.hez-Barrig An.rei v.rykhalov.Igor v. Shv.ts v.ctor Yu. Aristov In.titute of Solid State Physics RAS Chemogolovka Moscow District 142432 Russia Cen.re for Research on.Adaptiv. n.n.structures an. n.n.dev.ces (CRAn.) School of Physics Trinity College Dublin 2 Ireland HASYLAB at DESY D-22607 Hamburg Germany MAX-lab Lund University Box 118 22100 Lund Sweden Helmholtz-Zen.rum Berlin.für Materialien.un. En.rgie D- 12489 Berlin Germany

The atomic an. electron.c structure of graphen. syn.hesized on.commercially av.ilable cubic-SiC（001）/Si（001） wafers hav. been.studied by low en.rgy electron.microscopy （LEEM）, scan.in. tun.elin. microscopy （STM）, low en.rgy electron.diffraction.（LEED）, an. an.le resolv.d photoelectron.spectroscopy （ARPES）. LEEM an. STM data prov. the wafer-scale con.in.ity an. un.form thickn.ss of the graphen. ov.rlayer on.SIC（001）. LEEM, STM an. ARPES studies rev.al that the graphen. ov.rlayer on.SIC（001） con.ists of on.y a few mon.layers with physical properties of quasi-freestan.in. graphen.. Atomically resolv.d STM an. micro-LEED data show that the top graphen. layer con.ists of n.n.meter-sized domain. with four differen. lattice orien.ation. con.ected through the 〈110〉-directed boun.aries. ARPES studies rev.al the typical electron.spectrum of graphen. with the Dirac poin.s close to the Fermi lev.l. Thus, the use of techn.logically relev.n. SiC（001）/Si（001） wafers for graphen. fabrication.repre-sen.s a realistic way of bridgin. the gap between.the outstan.in. properties of graphen. an. their application..

关键词： graphen. cubic-SiC(001) STM ARPES LEEM LEED

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