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Usi.g fracture-based conti.uum modeli.g of coupled geomechani.al-hydrologi.al processes for numeri.al si.ulati.n of hydrauli. fracturi.g

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Journal of Rock Mechani.s and Geotechni.al Engi.eeri.g 2024年第5期16卷 1582-1599页

作者： Goodluck i.Ofoegbu GNO Modeli.g Research LLC. San AntonioTX78253USA

Thi. paper descri.es numeri.al si.ulati.n of hydrauli. fracturi.g usi.g fracture-based conti.uum modeli.g(FBCM)of coupled geomechani.al-hydrologi.al processes to evaluate a techni.ue for hi.h-densi.y fracturi.g and fracture *** si.ulati.ns are i.novati.e because of modeli.g di.crete fractures expli.i.ly i. conti.uum analysi..A key advantage of FBCM i. that fracture i.i.i.ti.n and propagati.n are modeled expli.i.ly wi.hout changi.g the domai. gri.(*** re-meshi.g).Further,multi.le reali.ati.ns of a preexi.ti.g fracture di.tri.uti.n can be analyzed usi.g the same domai. *** si.ulated hydrauli. fracturi.g techni.ue consi.ts of pressuri.i.g multi.le wells si.ultaneously:i.i.i.lly wi.hout permeati.g flui.s i.to the rock,to seed fractures uni.ormly and at hi.h densi.y i. the wall rock of the wells;followed by flui. i.jecti.n to propagate the seeded fracture densi.y *** combi.es the ease of conti.uum modeli.g wi.h the potenti.l accuracy of modeli.g di.crete fractures and fracturi.g *** are modeled as pi.cewi.e planar based on i.tersecti.ns wi.h domai. elements;fracture geometry stored as conti.uum properti.s i. used to calculate parameters needed to model i.di.i.ual fractures;and rock behavi.r i. modeled through tensori.l aggregati.n of the behavi.r of di.crete fractures and unfractured *** are presented for previ.usly unfractured rock and for rock wi.h preexi.ti.g fractures of hori.ontal,shallow-di.pi.g,steeply di.pi.g,or verti.al *** of a si.gle-well model are used to determi.e the pattern and spaci.g for a multi.le-well *** results i.lustrate hi.h-densi.y fracturi.g and fracture cagi.g through si.ultaneous flui. i.jecti.n i. multi.le wells:for previ.usly unfractured rock or rock wi.h preexi.ti.g shallow-di.pi.g or hori.ontal fractures,and i. si.u verti.al compressi.e stress greater than *** preexi.ti.g fractures are steeply di.pi.g or verti.al,and consi.eri.g the same i. si.u

关键词： Di.crete fracture Fracture-based conti.uum modeli.g Fracture cagi.g Hi.h-densi.y fracturi.g Hydrauli. fracturi.g Preexi.ti.g fracture

Taxonomy,di.tri.uti.n,and contemporary exposure of terrestri.l mammals to floods and human pressure across di.ferent areas for bi.di.ersi.y conservati.n i. Chi.a

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i.tegrati.e Zoology 2024年第3期19卷 458-467页

作者： Roman SHARNUUD Eri. i.AMECA MOE Key Laboratory for Bi.di.ersi.y Sci.nce&Ecologi.al Engi.eeri.g College of Life SciencesBeijing Normal UniversityBeijingChina Cli.ate Change Speci.li.t Group Species Survival CommissionInternational Union for Conservation of NatureGlandSwitzerland

A si.ni.i.ant research focus i. placed on i.enti.yi.g ani.al speci.s and areas at future ri.k to human-i.duced alterati.ns of the envi.onment and long-term changes i. cli.ati. ***,the extent to whi.h exposure to extreme cli.ati. events and i.tense human pressure can i.crease the ri.k of harmful i.pacts on speci.s remai.s poorly *** on terrestri.l mammals i. Chi.a,one of the world’s megadi.erse countri.s,we i.vesti.ated patterns of contemporary exposure to floods and human pressures and determi.ed thei. taxonomi. representati.n and di.tri.uti.n across three major area-based conservati.n schemes,namely,nati.nal nature reserves(NNRs),pri.ri.y areas for bi.di.ersi.y conservati.n(PABCs),and key bi.di.ersi.y areas(KBAs).Among the 440 speci.s assessed wi.h moderate or hi.h exposure to floods,327(∼75%)also quali.i.d as moderate or hi.h i. exposure to i.tense human *** speci.s mai.ly belong to the orders Chi.optera,Euli.otyphla,and ***,there were 305,311,and 311 speci.s wi.h moderate or hi.h exposure to flood and i.tense human pressure represented across NNRs,PABCs,and KBAs,*** fi.di.gs support the pri.ri.i.ati.n of KBAs for expansi.n of si.e-based protecti.n efforts such as NNRs i. Chi.a,consi.eri.g threats to speci.s from exposure to adverse effects from both extreme cli.ate and human pressure.

关键词： conservati.n floods human pressure mammals taxonomy

Detecti.n of 4p16.3 deleti.n and 11p15.5p15.4 gai. i. a boy by comparati.e genomi. hybri.i.ati.n array:A case report

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World Journal of Cli.i.al Cases 2024年第8期12卷 1517-1522页

作者： i.ın Kaya Medi.al Geneti.s Bakırçay UniversityÇiğli Education ve Training Hospitalİzmir 35620Turkey

BACKGROUND Nonalleli. homologous recombi.ati.n(NAHR)of segmental dupli.ati.ns or low copy repeats(LCRs)result i. DNA gai./loss and play an i.portant role i. the ori.i. of genomi. *** SUMMARY A 3-year-old boy was referred for geneti. *** genomi. hybri.-i.ati.n array analysi. revealed a loss of 3776 kb i. the 4p16.3 chromosomal regi.n and a gai. of 3201 kb i. the 11p15.5p15.4 chromosomal *** Genomi. i.balances caused by NAHR i. LCRs result i. deleti.n and dupli.ati.n syndromes.

关键词： Wolf-Hi.schhorn syndrome Si.ver-Russell syndrome Recurrent rearrangements Case report

Methodology for the assessment of the fri.ti.n torque of ball slewi.g beari.gs consi.eri.g preload scatter

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Fri.ti.n 2024年第8期12卷 1838-1857页

作者： i.i.o ESCANCi.NO i.er HERAS Flori.n SCHLEi.H Josu AGUi.REBEi.i. Department of Mechani.al Engi.eeri.g University of the Basque CountryBilbao 48080Spain Fraunhofer-i.sti.ute for Wi.d Energy Systems i.ES Hamburg 27572Germany

Thi. manuscri.t presents an i.novati.e methodology for the assessment of the fri.ti.n torque of ball slewi.g *** methodology ai.s to overcome the li.i.ati.ns of state-of-the-art approaches,especi.lly when the fri.ti.n torque i. condi.i.ned by the preload of the *** thi. end,the authors propose to si.ulate the preload scatter when solvi.g the load di.tri.uti.n problem,pri.r to the fri.ti.n torque *** preload scatter allows to si.ulate a progressi.e transi.i.n of the balls from a four-poi.t contact state to a two-poi.t contact *** i.plementi.g thi. capabi.i.y i.to an analyti.al model,the authors achi.ve a successful correlati.n wi.h experi.ental ***,dependi.g on the sti.fness of the structures to whi.h the beari.g i. assembled,i. i. demonstrated that the ri.i. ri.g assumpti.n can lead to i.accurate fri.ti.n torque results when a ti.ti.g moment i. *** methodology descri.ed i. thi. research work i. meant to have a practi.al ***,the manuscri.t provi.es gui.eli.es about how to use and tune the analyti.al model to get a reli.ble fri.ti.n torque predi.ti.n tool.

关键词： slewi.g beari.g ball beari.g fri.ti.n torque preload scatter

Enhancement of coerci.i.y,permeabi.i.y,and di.lectri. properti.s of Co_(0.2)Zn_(0.3)Ni.(0.5)Eu_(x)Fe_(2-x)O_(4) ferri.es for memory and hi.h frequency devi.es

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Journal of Rare Earths 2024年第6期42卷 1128-1135,I0005页

作者： i.Sardar M.D.Hossai. M.S.Si.der M.N.i.Khan M.R.Rahman Physi.s Di.ci.li.e Khulna UniversityKhulna9208Bangladesh Department of Physi.s Khulna University of Engineering&TechnologyKhulna9203Bangladesh Department ofComputer Sci.nce and Engi.eeri.g Northern University of Business&Technology KhulnaKhulna9100Bangladesh Materi.l Sci.nce Di.i.i.n Atomic Energy CentreDhaka1000Bangladesh

Spi.el cubi. ferri.es have huge appli.ati.ns i. me mory and hi.h frequency *** the i.provement of these modern devi.es,the magneti. coerci.i.y,permeabi.i.y,and di.lectri. properti.s of a ferri.e are the i.portant *** arti.le focuses on i.provi.g the magneti. coerci.i.y,magneti. permeabi.i.y,and di.lectri. properti.s of Co_(0.2)Zn_(0.3)Ni.(0.5)Eu_(x)Fe_(2-x)O_(4) ferri.es,where x=0.00,0.06,and *** X-ray di.fracti.n(XRD),Fouri.r transform i.frared spectroscopy(FTi.),fi.ld emi.si.n scanni.g electron mi.roscopy(FESEM),energy di.persi.e X-ray(EDX),vi.rati.g sample magnetometer(VSM),and an i.pedance analyzer were used to characteri.e the structural,magneti.,and di.lectri. properti.s of the *** XRD patterns i.di.ate the formati.n of spi.el cubi. structure of the samples wi.h a secondary peak(EuFeO_(3))for Eu doped *** densi.i.s and porosi.i.s of the samples follow an i.verse trend,where the doped samples’latti.e parameters are i.creased wi.h the i.crement of rare earth Eu *** FTi. analysi. also proves the spi.el cubi. phase of the *** average grai. si.e of the ferri.es i. obtai.ed vi. FESEM i.ages,and i. i. i.creased from 121 to 198 *** analysi. confi.ms that dopi.g of the Eu content also changes other hysteresi. loop properti.s of Co_(0.2)Zn_(0.3)Ni.(0.5)Eu_(x)Fe_(2-x)O_(4) ***,the coerci.i.y of the Eu doped samples i. greater than that of the mother alloy(x=0.00).The EDX study shows that there i. no i.puri.y contami.ati.n i. the *** permeabi.i.y and di.lectri. measurements show an i.proved quali.y factor of the Eu-doped samples wi.h low magneti. and di.lectri. *** dependent resi.ti.i.y and i.pedance analysi. also show the i.proved *** the observed properti.s of the samples,all the i.vesti.ated ferri.es mi.ht be strong candi.ates for potenti.l appli.ati.ns i. memory devi.es,magneti. sensors,and hi.h frequency appli.ati.ns.

关键词： Ferri.es Raree arths Coerci.i.y Permeabi.i.y EDX Resi.ti.i.y

Synergi.s from off-gas analysi. and mass balances for wastewater treatment--Some personal reflecti.ns on our experi.nces

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Envi.onmental Sci.nce and Ecotechnology 2024年第5期21卷 413-417页

作者： Eveli.e i.P.Volcke Bi.Co Research Group Department of Green Chemistry and TechnologyGhent UniversityCoupure Links 6539000GentBelgium

Looki.g back at over a decade of research by herself and her group,the author advocates the added value of gas phase measurements and the appli.ati.n of mass balances,as well as the synergeti. benefi.s obtai.ed when combi.i.g *** i.creased appli.ati.n of off-gas measurements for greenhouse gas emi.si.n moni.ori.g offers a great opportuni.y to look at other components i. the gas phase,parti.ularly *** balances should not be stri.tly reserved for modellers but also prove useful whi.e conducti.g lab experi.ents and studyi.g full-scale measurement *** off-gas measurements wi.h mass balances may serve not only to quanti.y greenhouse gas emi.si.n factors and aerati.n effi.i.ncy but also to follow dynami. concentrati.n profi.es of di.solved components wi.hout dedi.ated sensors and/or to calculate other unmeasured ***-balance-based data reconci.i.ti.n allows for obtai.i.g reli.ble and accurate data,and even more when combi.ed wi.h off-gas analysi..

关键词： Wastewater treatment Greenhouse gas emi.si.ns Mass balances Off-gas analysi. Moni.ori.g Data reconci.i.ti.n

Hi.h-temperature tri.ologi.al performance of functi.nally graded Stelli.e 6/WC metal matri. composi.e coati.gs manufactured by laser-di.ected energy deposi.i.n

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Fri.ti.n 2024年第3期12卷 522-538页

作者： Marta OSTOLAZA Alai.z ZABALA Jon i.aki.ARRi.UBi.TA i.i.o LLAVORi.Nagore OTEGi.Ai.zol LAMi.i. Department of Mechani.al Engi.eeri.g University of the Basque Country UPV/EHUPlaza Torres Quevedo 1Bilbo 48013Spain Faculty of Engi.eeri.g Mechanics and Industrial ProductionMondragon UnibertsitateaLoramendi 4Mondragon 20500Spain

Wear-dri.en tool fai.ure i. one of the mai. hurdles i. the *** i.sue can be addressed through surface coati.g wi.h cerami.-rei.forced metal matri. ***,the maxi.um cerami. content i. li.i.ed by *** thi. work,the tri.ologi.al behavi.ur of the functi.nally graded WC-cerami.-parti.lerei.forced Stelli.e 6 coati.gs i. *** that end,the wear resi.tance at room temperature and 400°C i. ***,the tri.ologi.al analysi. i. supported by crack sensi.i.i.y and hardness evaluati.n,whi.h i. of utmost i.portance i. the processi.g of composi.e materi.ls wi.h *** i.di.ate that functi.nally graded materi.ls can be employed to i.crease the maxi.um admi.si.le WC content,hence i.provi.g the tri.ologi.al behavi.ur,most notably at hi.h ***,a shi.t from abrasi.e to oxi.ati.e wear i. observed i. hi.h-temperature wear testi.g.

关键词： fri.ti.n coati.g metal matri. composi.e functi.nally graded materi.ls hi.h temperature laserdi.ected energy deposi.i.n

Are populati.n cycles recoveri.g?

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i.tegrati.e Zoology 2024年第3期19卷 538-547页

作者： Vasi.y D.YAKUSHOV Bori. i.SHEFTEL A.N.Severtsov i.sti.ute of Ecology and Evoluti.n of the Russi.n Academy of Sci.nces MoscowRussia

The dynami.s of populati.ns of small mammals of Central Si.eri. was *** studi.s were carri.d out at the Yeni.ei.ecologi.al stati.n“Mi.noye”of the *** i.sti.ute of Ecology and Evoluti.n,Russi.n Academy of *** ti.e seri.s analysi. was performed by the wavelet transform usi.g the stati.ti.al data processi.g language *** the 20th century,the dynami.s of the populati.n of the communi.y and some of i.s consti.uent speci.s(Sorex araneus;***;***;***;***;Craseomys rufocanus;Clethri.nomys ruti.us;Mi.rotus oeconomus;***)were characteri.ed by a 4-year *** type of dynami.s changed to noncycli. by the ni.eti.s,but by 2022,four speci.s(***,***,***,and ***)and the communi.y as a whole showed a tendency toward recovery of populati.n *** remai.i.g speci.s were characteri.ed by consi.tently low numbers wi.h i.regular low ampli.ude fluctuati.ns.

关键词： populati.n cycles small mammals ti.e-seri.s analysi. wavelet transform

Superexchange and charge transfer i. the ni.kelate superconductor La_(3)Ni.(2)O_(7) under pressure

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Sci.nce Chi.a(Physi.s,Mechani.s & Astronomy) 2024年第11期67卷 1-8页

作者： Wéi.Wú Zhi.ui.Luo Dao-Xi. Yao Meng Wang Center for Neutron Sci.nce and Technology Guangdong Provincial Key Laboratory of Magnetoelectric Physics and DevicesSchool of PhysicsSun Yat-sen UniversityGuangzhou 510275China

Recently, a bulk ni.kelate superconductor La_(3)Ni.(2)O_(7) i. di.covered at pressures wi.h a remarkable hi.h transi.i.n temperature T_(c)~ 80 K. Here, we study a Hubbard model wi.h ti.ht-bi.di.g parameters deri.ed from ab i.i.i. calculati.ns of La_(3)Ni.(2)O_(7),by employi.g large scale determi.ant quantum Monte Carlo and cellular dynami.al mean-fi.ld theory. Our result suggests that the superexchange coupli.gs i. thi. system are comparable to that of cuprates. The system i. a charge transfer i.sulator as the hole concentrati.n becomes four per si.e at large Hubbard U. Upon hole dopi.g, two low-energy spi.-si.glet bands emerge i. the system exhi.i.i.g di.ti.ct correlati.n properti.s: whi.e the one composed of the out-of-plane Ni.d_(3z^(2)-r^(2)) and O-p_(z) orbi.als demonstrates strong anti.erromagneti. correlati.ns and narrow effecti.e bandwi.th, the i.-plane si.glet band consi.ti.g of the Ni.d_(x^(2)-y^(2)) and O-p_(x)/p_(y) orbi.als i. i. general more i.i.erant. Over a broad range of hole dopi.g, the doped holes occupy pri.ari.y the d_(x^(2)-y^(2)) and p_(x)/p_(y) orbi.als, whereas the d_(3z^(2)-r^(2)) and p_(z) orbi.als retai. underdoped. We propose an effecti.e t-J model to capture the relevant physi.s and di.cuss the i.pli.ati.ns of our result for comprehendi.g the La_(3)Ni.(2)O_(7) superconducti.i.y.

关键词： superconducti.i.y ni.kelate superconductors Hubbard model superexchange charge transfer i.sulator quantum Monte Carlo