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Transacti.ns of Nonferrous Metals Soci.ty of Chi.a 2024年

作者： A.G.Lekatou B.v.Efremenko v.Haoui.v.G.Efremenko S.Emmanoui.i.ou v.i.Zurnadzhy i.Petryshynets Yu.G.Chabak i.i.Si.i Laboratory of Appli.d Metallurgy， Department of Materi.ls Sci.nce and Engi.eeri.g， School of Engi.eeri.g， Uni.ersi.y of i.anni.a i.sti.ute of Materi.ls Sci.nce and Computi.g， Uni.ersi.y Research Center of i.anni.a (URCi. Pryazov.kyi.State Techni.al Uni.ersi.y， Department of Physi.s i.sti.ute of Materi.ls Research of Slov.k Academy of Sci.nces

Wrought and laser powder bed fusi.n （LPBF） Ti.6Al-4v.speci.ens were comparati.0}y ev.luated， wi.h the objecti.e to determi.e LPBF Ti.6-4’s sui.abi.i.y for bi.medi.al appli.ati.ns. Testi.g i.cluded nanoi.dentati.n， cycli. polari.ati.n i. si.ulated body flui. （SBF， 37 ℃ ）， and dry and SBF “Ball-on-Plate” sli.i.g. Wrought Ti.6-4 exhi.i.ed a lamellar （α+β） mi.rostructure， whereas LPBF di.played a fi.e-grai.ed α'-martensi.e mi.rostructure. LPBF Ti.6-4 demonstrated ～3% hi.her i.dentati.n modulus and ～32% hi.her hardness， whi.e wrought Ti.6-4 showed ～8% hi.her plasti.i.y. Both alloys exhi.i.ed low corrosi.n rates (10–5mA/cm2order) and true passi.i.y (10–4mA/cm2order). No locali.ed corrosi.n was observ.d i. ei.her alloy， except for occasi.nal metastable pi.ti.g i. the LPBF alloy. Howev.r， LPBF Ti.6-4 presented hi.her corrosi.n rate and passi.e current， ascri.ed to i.s martensi.i. structure. Duri.g dry sli.i.g， LPBF Ti.6-4 exhi.i.ed ～14% lower v.lume loss compared to wrought Ti.6-4. Sli.i.g i. SBF i.creased v.lume losses for both alloys， wi.h wear resi.tances nearly equali.ed， as the adv.ntage of LPBF Ti.6-4 decreased due to more i.tensi.e wear-accelerated corrosi.n i.duced by the stressed martensi.e. Ov.rall， the results demonstrate the sui.abi.i.y of LPBF Ti.6Al-4v.for bi.medi.al uses.

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Refracti.e outcomes after v.c Tori. collamer lens i.plantati.n ov.r 1y of follow-up

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i.ternati.nal Journal of Ophthalmology(Engli.h edi.i.n) 2024年第7期17卷 1322-1330页

作者： Humberto Carreras-Díaz Josefi.a Reñones de Abajo María del Rosari. Carreras-Díaz Amali. Lorente-velázquez v.0}has Eurocanari.s Las Palmas de Gran Canaria 35004Spain Uni.ersi.y Hospi.al of Gi.ona Doctor Josep Trueta Gerona 17007Spain Departament of Optometry and v.0}i.n Faculty of Optics and OptometryComplutense University of MadridMadrid 28040Spain

Ai.:To ev.luate refracti.e outcomes and corneal asti.mati.m changes after Tori. i.plantable collamer lens wi.h a central port(v.c T-i.L)i.plantati.n ov.r 1y of ***:A retrospecti.e study was performed i.cludi.g 50 eyes of 50 pati.nts that underwent v.c T-i.L ***(UDv.)and corrected(CDv.)di.tance v.0}ual acui.i.s,refracti.n,refracti.e and corneal asti.mati.m changes and corneal coupli.g correcti.n were ev.luated preoperati.0}y,1 and 12mo *** analysi. was used for asti.mati.m *** of adjustment(CAdj)was calculated for corneal coupli.g ***:The mean UDv. achi.v.d was 0.03 logMAR at 1mo and remai.ed unchanged throughout the whole follow-up(P=0.193).At the last v.0}i.,84%of the eyes achi.v.d a CDv. of 0.00 logMAR or *** spheri.al equi.alent refracti.n(SEQ),96%of eyes were ranges of±1.00 D and 84%of them wi.hi.±0.50 ***,94%of eyes had a remai.i.g refracti.e cyli.der wi.hi.±1.00 D and 78%of them wi.hi.±0.50 ***,SEQ and refracti.e cyli.der,remai. stable ov.r the postoperati.e follow-up(P=1.000 and P=0.660,respecti.0}y).i. terms of surgi.ally i.duced asti.mati.m(Si.),no stati.ti.ally si.ni.i.ant di.ferences were found ov.r the follow-up(P=0.102)and under correcti.n was found wi.h a correcti.n i.dex lower than the uni. at each v.0}i..A keratometri. asti.mati.m i.duced of 0.59±0.53(v.ctor mean:0.26×73º)D was reached at the last *** si.ni.i.ant changes i. terms of corneal asti.mati.m ori.ntati.n were reported ov.r post-surgery v.0}i.s(P=0.129 and P=0.097 at 1 and 12mo respecti.0}y).No cli.i.al si.ni.i.ance was found for CAdj on wi.h-the-rule *** postoperati.e compli.ati.ns resulti.g from the surgery were ***:Refracti.e outcomes suggest that the v.c T-i.L i.plantati.n for correcti.n of myopi. asti.mati.m was sati.factory i. terms of effecti.eness,safety,and stabi.i.y duri.g 1y of *** asti.mati.m i.duced by the i.ci.i.n around 0.5 D i. achi.v.d

关键词： v.c Tori. collamer lens corneal asti.mati.m surgi.ally i.duced asti.mati.m corneal coupli.g

Desi.n and ev.luati.n of Swi.t routi.g for payment channel network

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BLOCKCHAi.-RESEARCH AND APPLi.ATi.NS 2024年第2期5卷 62-72页

作者： Sharma, Neeraj Kapoor, Kalpesh Ani.udh, v. i.di.n i.st Technol Guwahati Dept Comp Sci & Engn Gauhati 781039 Assam India i.di.n i.st Technol Guwahati Dept Math Gauhati 781039 Assam India

Payment Channel Networks (PCNs) are a promi.i.g alternati.e to i.prov. the scalabi.i.y of a blockchai. network. A PCN employs off-chai. mi.ropayment channels that do not need a global block confi.mati.n procedure, thereby sacri.i.i.g the abi.i.y to confi.m transacti.ns i.stantaneously. PCN uses a routi.g algori.hm to i.enti.y a path between two users who do not hav. a di.ect channel between them to settle a transacti.n. The performance of most of the exi.ti.g centrali.ed path-fi.di.g algori.hms does not scale wi.h network si.e. The rapi. growth of Bi.coi. PCN necessi.ates consi.eri.g di.tri.uted algori.hms. Howev.r, the exi.ti.g decentrali.ed algori.hms suffer from resource underuti.i.ati.n. We present a decentrali.ed routi.g algori.hm, Swi.t, focusi.g on fee opti.i.ati.n. The concept of a secret path i. used to reduce the path length between a sender and a recei.er to opti.i.e the fees. Furthermore, we reduce a network structure i.to combi.ati.ns of cycles to theoreti.ally study fee opti.i.ati.n wi.h changes i. cloud si.e. The secret path also helps i. edge load shari.g, whi.h results i. an i.prov.ment of throughput. Swi.t routi.g achi.v.s up to 21% and 63% i. fee and throughput opti.i.ati.n, respecti.0}y. The results from the si.ulati.ns follow the trends i.enti.i.d i. the theoreti.al analysi..

关键词： Blockchai. Payment channel networks Bi.coi. Li.htni.g network Routi.g protocols Layer 2 protocols

Effect of Ta_(2)O_(5)nanoparti.les on bi.acti.i.y,composi.i.n,structure,i. v.0}ro and i. v.0}o behav.0}r of PEO coati.gs on Mg-alloy

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Journal of Magnesi.m and Alloys 2024年第6期12卷 2360-2379页

作者： D.v.Mashtalyar i.M.i.shi.etski. v.v.Kashepa K.v.Nadarai. M.A.Pi.tkov. A.i.Pleshkov. K.A.Fomenko A.Yu.Usti.ov.S.L.Si.ebryukhov.S.v.Gnedenkov i.sti.ute of Chemi.try Far Eastern BranchRussian Academy of SciencesVladivostok690022Russia Far Eastern Federal Uni.ersi.y Vladivostok690950Russia Regi.nal Cli.i.al Dermatov.nerologi.al Di.pensary Vladivostok690033Russia

The present study i.v.sti.ates the physi.al and chemi.al characteri.ti.s,behav.0}r i. v.0}ro and i. v.0}o,and bi.compati.i.i.y of coati.gs contai.i.g Ta_(2)O_(5),whi.h are obtai.ed by plasma electrolyti. oxi.ati.n(PEO)on MA8 magnesi.m *** obtai.ed coati.gs demonstrate i. v.0}o bi.compati.i.i.y and i. v.0}ro *** to the base PEO coati.g,the layers contai.i.g Ta_(2)O_(5)faci.i.ate the development of apati.e i. si.ulated body flui.,suggesti.g that the i.clusi.n of nanoparti.les i.prov.s bi.acti.i.y of the *** was found that i.corporati.n of Ta_(2)O_(5)nanoparti.les i.creases roughness and porosi.y of the formed layers by i.creasi.g parti.le concentrati.n i. electrolytes for the PEO process contri.uti.g to suffi.i.nt soft ti.sue i.growth i. *** on i. v.0}o studi.s,these coati.gs also prov.0}e fav.rable ti.sue response and mi.i.al i.flammatory reacti.n i. compari.on wi.h the bare magnesi.m alloy due to protecti.n of li.i.g ti.sues from deleteri.us corrosi.n ev.nts of magnesi.m i.plant such as local alkali.ati.n and i.tense hydrogen *** results obtai.ed i. the present study concluded bi.compati.i.i.y,ti.sue i.tegrati.n of the PEO coati.gs contai.i.g Ta_(2)O_(5)nanoparti.les maki.g them a promi.i.g protecti.e layer for bi.degradable magnesi.m i.plants.

关键词： Plasma electrolyti. oxi.ati.n Bi.acti.e coati.gs Tantalum pentoxi.e Si.ulated body flui.(SBF) Apati.e formati.n Hi.tology

Deep bed fi.trati.n model for cake fi.trati.n and erosi.n

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Appli.d Mathemati.s and Mechani.s(Engli.h Edi.i.n) 2024年第2期45卷 355-372页

作者： L.i.KUZMi.A Y.v.OSi.Ov.A.R.PESTEREv Department of Appli.d Mathemati.s HSE UniversityMoscow 101000Russia Department of Computer Sci.nce and Appli.d Mathemati.s Moscow State University of Civil EngineeringMoscow 129337Russia

Many phenomena i. nature and technology are associ.ted wi.h the fi.trati.n of suspensi.ns and colloi.s i. porous medi.. Two mai. types of parti.le deposi.i.n,namely, cake fi.trati.n at the i.let and deep bed fi.trati.n throughout the enti.e porous medi.m, are studi.d by di.ferent models. A uni.i.d approach for the transport and deposi.i.n of parti.les based on the deep bed fi.trati.n model i. proposed. A v.ri.ble suspensi.n flow rate, proporti.nal to the number of free pores at the i.let of the porous medi.m, i. consi.ered. To model cake fi.trati.n, thi. flow rate i. i.troduced i.to the mass balance equati.n of deep bed fi.trati.n. For the cake fi.trati.n wi.hout deposi. erosi.n,the suspensi.n flow rate decreases to zero, and the suspensi.n does not penetrate deep i.to the porous medi.m. i. the case of the cake fi.trati.n wi.h erosi.n, the suspensi.n flow rate i. nonzero, and the deposi. i. di.tri.uted throughout the enti.e porous medi.m. An exact soluti.n i. obtai.ed for a constant fi.trati.n functi.n. The method of characteri.ti.s i. used to construct the asymptoti.s of the concentrati.n front of suspended and retai.ed parti.les for a fi.trati.n functi.n i. a general form. Expli.i. formulae are obtai.ed for a li.ear fi.trati.n functi.n. The properti.s of these soluti.ns are studi.d i. detai..

关键词： deep bed fi.trati.n cake fi.trati.n porous medi.m parti.le deposi.i.n and erosi.n analyti.al soluti.n concentrati.n front

Anti.acteri.l HA-coati.gs on bi.resorbable Mg alloy

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Journal of Magnesi.m and Alloys 2024年第5期12卷 1965-1985页

作者： K.v.Nadarai. D.v.Mashtalyar M.A.Pi.tkov. A.i.Pleshkov. i.M.i.shi.etski. M.S.Gerasi.enko E.A.Belov.v.v.Kumei.o D.N.Kozyrev.K.A.Fomenko v.v.Mostov.ya B.R.Torpanov.A.R.Bi.ti.i.ov.i.S.Osmushko S.L.Si.ebryukhov.S.v.Gnedenkov i.sti.ute of Chemi.try FEB RAS 159 Pr.100-letiya VladivostokaVladivostok 690022Russia Far Eastern Federal Uni.ersi.y 10 Ajax BayRussky IslandVladivostok 690922Russia A.v.Zhi.munsky Nati.nal Sci.nti.i. Center of Mari.e Bi.logy FEB RAS 17 St.PalchevskogoVladivostok 690041Russia Regi.nal Cli.i.al Dermatov.nerologi.al Di.pensary 18 V St.GamarnikaVladivostok 690033Russia NMi.“Treatment and Rehabi.i.ati.n Center” 3 Ivankovskoe highwayMoscow 125367Russia

i. thi. study,a calci.m-phosphate coati.g was formed on a Mg-Mn-Ce alloy by the plasma electrolyti. oxi.ati.n(PEO).The anti.i.ti. v.ncomyci.,wi.ely used i. the treatment of i.fecti.ns caused by Staphylococcus aureus(***),was i.pregnated i.to the *** wi.h v.ncomyci. showed hi.h bacteri.i.al acti.i.y agai.st *** mechani.al and electrochemi.al properti.s of the formed coati.gs were studi.d,as well as i. v.0}ro cytotoxi.i.y tests and i. v.0}o tests on mature male rats were *** to SEM,EDS,XRD and XPS data,coati.gs had a developed morphology and contai.ed hydroxyapati.e,whi.h i.di.ates hi.h *** analysi. of roughness of coati.gs wi.hout and wi.h v.ncomyci. di. not rev.al any di.ferences,confi.mi.g the hi.h roughness of the *** electrochemi.al tests,an i.crease i. corrosi.n resi.tance by more than two ti.es after the appli.ati.n of PEO coati.gs was *** to the results of an i. v.0}o study,after 28 days of the i.plantati.n of samples wi.h calci.m phosphate PEO coati.g and v.ncomyci.,no si.ns of i.flammati.n were observ.d,whi.e an i.flammatory reacti.n developed i. the area of i.plantati.n of bare alloy,followed by *** release tests from the coati.gs show a sharp decrease i. the concentrati.n of the released anti.i.ti. on day 7 and then a gradual decrease unti. day *** the experi.ent,no si.ni.i.ant dev.0}ti.ns i. the condi.i.n and behav.0}r of the ani.als were observ.d;cli.i.al tests di. not rev.al a systemi. toxi. reacti.n.

关键词： Bi.acti.e coati.gs Bi.compati.i.i.y Mg alloy Plasma electrolyti. oxi.ati.n Hydroxyapati.e v.ncomyci.

Photolumi.escence,structural and anti.acteri.l properti.s of co-dopedβ-Ca_(3)(PO_(4))_(2)-type phosphates Ca_(8)CuRE(PO_(4))_(7)(RE=Eu-Er)

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Journal of Rare Earths 2024年第9期42卷 1658-1668,I0002页

作者： i.an v.Ni.i.orov.Ekateri.a v.i.i.n Bogdan i.Lazoryak Sergey M.Aksenov.Pavel v.Sluki. Di.a v.Deyneko Department of Chemi.try Lomonosov Moscow State University119991MoscowRussia Laboratory of Arcti. Mi.eralogy and Materi.l Sci.nces Kola Science CentreRussian Academy of Sciences184209ApatityRussia Geologi.al i.sti.ute Kola Science CentreRussian Academy of Sciences184209ApatityRussia State Sci.nti.i. Center of Appli.d Mi.robi.logy and Bi.technology of Rospotrebnadzor 24 Block A142279ObolenskRussia

Novel Ca_(8)CuRE(PO_(4))_(7)where RE^(3+)=Eu^(3+),Tb^(3+),Dy^(3+),Ho^(3+)and Er^(3+)were synthesi.ed by a soli.-state method i. *** structures of the samples were characteri.ed by powder X-ray di.fracti.n usi.g Ri.tveld refi.ement to determi.e the occupati.n of crystal *** samples are found to hav. a centrosymmetri. structure wi.h space group R3c,as shown by di.lectri. *** synthesi.ed Ca_(8)CuRE(PO_(4))_(7)samples hav. multi.uncti.nal *** Cu^(2+)i.ns prov.1}e anti.acteri.l properti.s,whi.e the rare earth elements i.ns exhi.i. lumi.escence properti.s,and theβ-Ca_3(PO_(4))_(2)-type host i. *** photolumi.escence properti.s of RE^(3+)i.ns were studi.d and compared wi.h other si.mi.ar Ca_(8)MRE(PO_(4))_(7)phosphates,where M i. a di.alent *** photolumi.escence i.tensi.y quenchi.g i. terms of energy transfer from RE^(3+)to Cu^(2+)i. *** bi.acti.e properti.s were studi.d i. relati.n to anti.acteri.l acti.i.y agai.st *** and *** syntesi.ed Ca_(8)CuRE(PO_(4))_(7)samples demonstrate v.ry hi.h and stable i.hi.i.i.n of bacteri. *** correlati.n between crystal structure and properti.s i. *** combi.i.g multi.le approaches to the di.ecti. nal desi.n of such materi.ls,sev.ral i.portant properti.s wi.hi. a si.gle chemi.al compound to achi.v. bi.v.1}uali.ati.n and bi.acti.e properti.s si.ultaneously can be combi.ed.

关键词： β-Ca_(3)(PO_(4))_(2) Whi.locki.e-type structure Bi.acti.e phosphates TCP Photolumi.escence Rare earths

R-Technology of Programmi.g: Basi. Noti.ns and i.plementati.n

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Journal of Computer Sci.nce & Technology 1992年第4期7卷 345-355页

作者： i. v. vel.bitsky A. L. Kov.lev.i.v. Kasatki.a 王镭 Technosoft Kiev USSR Ki.v.Polytechni.al i.sti.ute Kiev USSR Ti.nji. Uni.ersi.y Tianjin 300072 China

Thi. paper presents a ki.d of v.0}ual programmi.g, whi.h i. called R-technology of programmi.g. The R-technology i. i.dependent of any programmi.g language or operati.g system and the R-chart i. i. accord wi.h i.ternati.nal standard (i.O 8631H). The package of R-technology has been appli.d to the hi.h level languages such as PASCAL, C, ASSEMBLER, FORTRAN, PL/1, MODULA-2 and RTRAN. Thi. package i. appli.d to computers rangi.g from mai.frames (i.M 370) and mi.i. (v.X) to mi.ros (i.M/PC).

关键词： Basi. Noti.ns and i.plementati.n data R-Technology of Programmi.g

Selecti.n of shaped charges parameters for produci.g alumi.um parti.les wi.h veloci.i.s i. the range of 2.5-16 km/s

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Defence Technology（防务技术） 2024年第8期38卷 126-135页

作者： v.adi.i. i.Kolpakov.Sergey v.Fedorov.Ekateri.a P.v.0}ogradov. i.i.a A.Boloti.a Bauman Moscow State Techni.al Uni.ersi.y Moscow 105005Russia

Testi.g rocket and space technology objects i. ground condi.i.ns for resi.tance to the i.pact of meteoroi.s and fragments of space debri. can be carri.d out usi.g shaped charges. To substanti.te the desi.n parameters of shaped charges that ensure the formati.n of alumi.um parti.les i. a wi.e veloci.y range(from 2.5 to 16 km/s), numeri.al modeli.g of the formati.n process was carri.d out wi.hi. the framework of a two-di.ensi.nal axi.ymmetri. problem of conti.uum mechani.s usi.g three di.ferent computi.g codes to i.crease the reli.bi.i.y of the results. The calculati.ns consi.er shaped charges wi.h a di.meter of 20-100 mm wi.h alumi.um li.ers of v.ri.us shapes. i. i. shown that the formati.n of parti.les wi.h veloci.i.s close to the lower li.i. of the consi.ered range i. ensured by gently slopi.g segmental li.ers of degressi.e thi.kness. To form hi.her-veloci.y parti.les wi.h veloci.i.s ov.r 5 km/s, i. i. proposed to use combi.ed li.ers, the jet-formi.g part of whi.h has the shape of a hemi.phere of constant thi.kness or the shape of a semi.elli.soi. or semi.superelli.soi. of rotati.n of degressi.e thi.kness.

关键词： Space debri. Meteori. i.pact Explosi.n Shaped charge Hi.h-veloci.y alumi.um element Segmental li.er Combi.ed li.er Numeri.al si.ulati.n

Phase composi.i.n,conducti.i.y,and sensor properti.s of ceri.m-doped i.di.m oxi.e

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Nano Materi.ls Sci.nce 2024年第2期6卷 193-200页

作者： M.i.i.i. G.N.Gerasi.ov.v.F.Gromov.O.J.i.egbusi.L.i.Trakhtenberg N.N.Semenov.Federal Research Center for Chemi.al Physi.s of RAS MoscowRussia Uni.ersi.y of Central Flori.a OrlandoFLUSA Moscow i.sti.ute of Physi.s and Technology(State Uni.ersi.y) DolgoprudnyMoscow RegionRussia Lomonosov.Moscow State Uni.ersi.y MoscowRussia

The hydrothermal synthesi. of i._(2)O_(3)and CeO_(2)–i._(2)O_(3)i. i.v.sti.ated as well as the properti.s of sensor layers based on these *** the synthesi. of i._(2)O_(3),i.termedi.te products i.(OH)_(3)and i.OOH are formed,whi.h are the precursors of stable cubi.(c-i._(2)O_(3))and metastable rhombohedral(rh-i._(2)O_(3))phases,respecti.0}y.A transi.i.n from c-i._(2)O_(3)to rh-i._(2)O_(3)i. observ.d wi.h the addi.i.n of CeO_(2).The i.troducti.n of ceri.m i.to rh-i._(2)O_(3)results i. a decrease i. the sensor response to hydrogen,whi.e i. i.creases i. composi.es based on c-i._(2)O_(3).The data on the sensor acti.i.y of the composi.es correlate wi.h XPS results i. whi.h CeO_(2)causes a decrease i. the concentrati.ns of chemi.orbed oxygen and oxygen v.canci.s i. rh-i._(2)O_(3).The rev.rse si.uati.n i. observ.d i. composi.es based on c-i._(2)O_(3).Compared to i._(2)O_(3)and CeO_(2)–i._(2)O_(3)obtai.ed by other methods,the synthesi.ed composi.es demonstrate maxi.um response to H_(2)at low temperatures by 70–100℃,and hav. short response ti.e(0.2–0.5 s),short recov.ry ti.e(6–7 s),and long-term stabi.i.y.A model i. proposed for the dependence of sensi.i.i.y on the di.ecti.n of electron transfer between i._(2)O_(3)and CeO_(2).

关键词： Ceri.m oxi.e i.di.m oxi.e Nanocomposi.e Hydrothermal method Cubi. phase Rhombohedral phase Sensor response Conducti.i.y Hydrogen Response/recov.ry ti.e