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Change i. Grai.-Si.e Composi.i.n of Li.ni.e under Cycli. Freezi.g-Thawi.g and Wetti.g-Dryi.g

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Natural Resources 2024年第1期15卷 17-27页

作者： Natali. S. Batugi.a Vladi.lav i. Fedorov Chersky i.sti.ute of Mi.i.g of the North Si.eri.n Branch Russi.n Academy of Sci.nces Yakutsk Russia

The paper presents the change i. grai.-si.e composi.i.n of li.ni.e under cycli. freezi.g-thawi.g (FTC) and wetti.g-dryi.g (WDC). The arti.le shows that i. the spri.g and autumn peri.ds the li.ni.es can be subjected to repeated freezi.g-thawi.g and wetti.g-dryi.g, whi.h determi.es the possi.i.i.y of changi.g thei. grai.-si.e composi.i.n and structure. Experi.ental studi.s i. laboratory condi.i.ns on the i.fluence of cycli. freezi.g-thawi.g (FTC) and wetti.g-dryi.g (WDC) on the quali.y i.di.ators of li.ni.es have been carri.d out, thei. granulometri. (fracti.nal) composi.i.n has been studi.d. Freezi.g-thawi.g cycle condi.i.ns are as follows (FTC): mi.i.um exposure temperature: -20°C;maxi.um: +5°C;relati.e humi.i.y: 30%;number of processi.g cycles: 3. Wetti.g-dryi.g cycles are as follows (WDC): dryi.g temperatures are +20, +40, +60, +80°C, dryi.g ti.e 90 mi.utes, the coals are further subjected to rai. (soaki.g) for a peri.d of water saturati.n to humi.i.y of 30% - 40% and dry agai.. The number of wetti.g-dryi.g cycles i. 3 ti.es. The tests have revealed the destructi.e effects of FTC and WDC on the samples of lower metamorphi. grade coal, and the cycles of wet-dry lead to the much hi.her yi.ld of fi.e si.es (-6+0;-13+0 mm) than the cycles of freeze-thaw. Furthermore, i. i. found that the i.crease i. the yi.ld of fi.es depends on the heati.g temperature: coal di.i.tegrati.n proceeds more i.tensi.ely at a hi.her temperature of dryi.g.

关键词： Li.ni.e Freezi.g-Thawi.g Cycle Wetti.g-Dryi.g Cycle Grai. Si.e Composi.i.n Dust Coal Storage Loss Quali.y

Are school uni.orms associ.ted wi.h gender i.equali.i.s i. physi.al acti.i.y? A pooled analysi. of populati.n-level data from 135 countri.s/regi.ns

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Journal of Sport and Health Sci.nce 2024年第4期13卷 590-598页

作者： Mai.ead Ryan Lui.a i.C.Ri.ardo Ni.ole Nathan Ri.kka Hofmann Esther van Slui.s Medi.al Research Counci. Epi.emi.logy Uni. University of CambridgeCambridge CB20QQUK Faculty of Educati.n University of CambridgeCambridge CB28PQUK Hunter New England Populati.n Health WallsendNSW 2287Australia School of Medi.i.e and Publi. Health College of HealthMedicine and WellbeingUniversity of NewcastleCallaghanNSW 2308Australia Hunter Medi.al Research i.sti.ute New Lambton HeightsNSW 2305Australia Nati.nal Centre of i.plementati.n Sci.nce University of NewcastleCallaghanNSW 2308Australia

Purpose:i. i. ai.ed to assess whether school uni.orms are associ.ted wi.h populati.n-level gender i.equali.i.s i. physi.al acti.i.y,and whether associ.ti.ns di.fer by school level,country/regi.n i.come,and assessment ***:An ecologi.al study desi.n was *** collected data about global uni.orm practi.es usi.g an onli.e *** searched for country/regi.n-level esti.ates of school-aged youth meeti.g physi.al acti.i.y gui.eli.es from i.ternati.nal survei.lance *** selecti.n was conducted i. dupli.ate usi.g a systemati. process,and a random sample of all data was checked to ensure extracti.n and pooli.g processes were *** calculated absolute and relati.e gender i.equali.i.s i. physi.al acti.i.y for each *** regressi.n exami.ed associ.ti.ns between country/regi.n-level uni.orm practi.es(bi.ary yes/no exposure vari.ble) and country/regi.n-level gender i.equali.i.s i. physi.al acti.i.y gui.eli.e compli.nce(absolute and relati.e i.equali.i.s).We i.vesti.ated moderati.n by school level,strati.i.d analyses by i.come group,and repeated pri.ary analyses usi.g devi.e-measured ***:Pooli.g data from 135 countri.s/regi.ns(n=1,089,852),we found no associ.ti.n between populati.n-level uni.orm practi.es and gender i.equali.i.s i. physi.al acti.i.y across all ages(absolute:β=-0.2;95% confi.ence i.terval(95%Ci.:-1.7 to 1.3,p=0.74;relati.e:β=0.1;95%Ci.-0.1 to 0.2,p=0.51).Subgroup analysi. suggested a posi.i.e associ.ti.n i. pri.ary school setti.gs(absolute:β=4.3;95%Ci.-0.0 to 8.6,p=0.05).Among hi.h-i.come countri.s,absolute i.equali.i.s were si.ni.i.antly greater i. countri.s/regi.ns wi.h uni.orm practi.es(N=37) compared to those wi.hout(N=48)(9.1(SD=3.6) vs.7.8 percentage poi.ts(SD=4.3)).Repeati.g analyses usi.g devi.e-measured data(n=32,130;N=24) di. not alter our pri.ary *** i.i.i.l descri.ti.e stati.ti.s,we found that i. countri.s/regi.ns where a maj ori.y of schools(>50%) reportedly use uni.orms,there was lower compli

关键词： School poli.y Clothi.g Chi.d Adolescent Accelerometer

Slope stabi.i.y of reclai.ed coal mi.es through a new water fi.li.g i.dex

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Journal of Rock Mechani.s and Geotechni.al Engi.eeri.g 2024年第3期16卷 828-839页

作者： Antoni.s Mi.routsi.os Alexandros i.Theochari. Ni.olaos C.Koukouzas i.anni. E.Zevgoli. Chemi.al Process&Energy Resources i.sti.ute Centre for Research&Technology HellasAthensGreece School of Mi.i.g and Metallurgi.al Engi.eeri.g National Technical University of AthensAthensGreece

A common reclamati.n practi.e for closed coal surface mi.es i. fi.li.g them wi.h water to form pi. *** creati.n and sustai.abi.i.y of these lakes are si.ni.i.antly affected by the stabi.i.y of the correspondi.g *** present study provi.es a general framework for analyzi.g the water fi.li.g’s effect on slope stabi.i.y based on a new water fi.li.g i.dex,whi.h can i.di.ectly consi.er the factors affecti.g the process and effi.i.ntly quanti.y the fi.li.g speed’s *** assumpti.ns of the proposed approach are thoroughly di.cussed,and the range of the water fi.li.g i.dex i. ***,the safety factor i. calculated usi.g the fi.i.e element method wi.h the shear strength reducti.n techni.ue duri.g the fi.li.g process for vari.us condi.i.ns(soi. properti.s,slope geometry,hydrauli. condi.i.ns,and water fi.li.g speed).Results are presented as normali.ed stabi.i.y charts for practi.al *** the water fi.li.g,the stabi.i.y gradually decreases unti. the reservoi. reaches a cri.i.al level of 10%e40%of the total hei.ht;i. then i.creases to even more stable condi.i.ns than the i.i.i.l ***,the present analysi. allows for the preli.i.ary stabi.i.y evaluati.n of a coal mi.e duri.g the formati.n of a pi. lake and the appropri.te quanti.i.ati.n of the water fi.li.g’s effect.

关键词： Post-coal era Open-pi. floodi.g Stabi.i.y charts Cri.i.al level

Constrai.ed re-cali.rati.n of two-equati.n Reynolds-averaged Navi.r–Stokes models

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Theoreti.al & Appli.d Mechani.s Letters 2024年第2期14卷 82-89页

作者： Yuanwei.Bi. Xi.ohan Hu Ji.qi.Li.Samuel J.Grauer Xi.ng i.A.Yang Department of Mechani.al Engi.eeri.g Pennsylvania State UniversityUniversity ParkPA 16802USA State Key Laboratory for Turbulence and Complex Systems Peking UniversityBeijing 100871China College of Engi.eeri.g Peking UniversityBeijing 100871China

Machi.e-learned augmentati.ns to turbulence models can be advantageous for flows wi.hi. the trai.i.g dataset but can often cause harm *** lack of generali.abi.i.y ari.es because the constants(as well as the functi.ns)i. a Reynolds-averaged Navi.r–Stokes(RANS)model are coupled,and un-constrai.ed re-cali.rati.n of these constants(and functi.ns)can di.rupt the cali.rati.ns of the baseli.e model,the preservati.n of whi.h i. cri.i.al to the model's *** safeguard the behavi.rs of the baseli.e model beyond the trai.i.g dataset,machi.e learni.g must be constrai.ed such that basi. cali.rati.ns li.e the law of the wall are kept *** letter ai.s to i.enti.y such constrai.ts i. two-equati.n RANS models so that future machi.e learni.g work can be performed wi.hout vi.lati.g these *** demonstrate that the i.enti.i.d constrai.ts are not ***,they help preserve the generali.abi.i.y of the baseli.e model.

关键词： Machi.e learni.g Turbulence modeli.g Reynolds-averaged Navi.r-Stokes

AN OPTi.AL CONTROL PROBLEM FOR A LOTKA-VOLTERRA COMPETi.i.N MODEL Wi.H CHEMO-REPULSi.N

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Acta Mathemati.a Sci.nti. 2024年第2期44卷 721-751页

作者： Di.na i.HERNÁNDEZ Di.go A.RUEDA-GOMEZ Élder J.Vi.LAMi.AR-ROA Uni.ersi.ad i.dustri.l de Santander Escuela de MatemáticasA.A.678BucaramangaColombia

i. thi. paper we study a bi.i.ear opti.al control problem for a di.fusi.e Lotka-Volterra competi.i.n model wi.h chemo-repulsi.n i. a bounded domai. of ℝ^(ℕ),N=2,*** model descri.es the competi.i.n of two speci.s i. whi.h one of them avoi. encounters wi.h ri.als through a chemo-repulsi.n *** prove the exi.tence and uni.ueness of weak-strong soluti.ns,and then we analyze the exi.tence of a global opti.al soluti.n for a related bi.i.ear opti.al control problem,where the control i. acti.g on the chemi.al ***,we deri.e fi.st-order opti.ali.y condi.i.ns for local opti.al soluti.ns usi.g the Lagrange multi.li.rs ***,we propose a di.crete approxi.ati.n scheme of the opti.ali.y system based on the gradi.nt method,whi.h i. vali.ated wi.h some computati.nal experi.ents.

关键词： Lotka-Volterra chemo-repulsi.n opti.al control opti.ali.y condi.i.ns

Effects of synthesi. parameters on the performance of crossli.ked Co-polymers wi.h clays for conformance control

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Petroleum Research 2024年第1期9卷 98-108页

作者： A.A.Roslan N.A.A.Azi. N.F.A.Deraman i.Dzulkarnai. Petroleum Engi.eeri.g Department Centre of Research Enhanced Oil Recovery(COREOR)Universiti Teknologi PETRONASSeri IskandarPerakMalaysia Chemi.al Engi.eeri.g Department Centre of Research Enhanced Oil Recovery(COREOR)Universiti Teknologi PETRONASSeri IskandarPerakMalaysia

Conformance control or water shut-off i. a techni.ue used to i.prove oi. *** conformance control,polymers block hi.h permeabi.i.y water areas and redi.tri.ute water dri.e toward unswept oi. *** thi. study,co-polymers(denoted ATP-PGV/AM-co-AMPS)were synthesi.ed usi.g acrylami.e(AM)and 2-acrylami.e-2-methylpropane sulfoni. aci.(AMPS)as the monomers,polyethylene glycol(PEG)-200 and methylenebi.acrylami.e(MBA)as the crossli.kers,attapulgi.e(ATP)and bentoni.e(PGV)as the clay types,and ammoni.m persulfate(APS)as the i.i.i.tor,i. addi.i.n to paraffi. oi. and *** were synthesi.ed usi.g i.verse emulsi.n polymeri.ati.n wi.h di.ferent concentrati.ns of monomers,crossli.kers,and clays,and they were characteri.ed usi.g Fouri.r-transform i.frared(FTi.)spectroscopy and scanni.g electron mi.roscopy(SEM)wi.h energy di.persi.e X-ray spectroscopy(EDX).FTi. spectra of the samples confi.med the exi.tence of sulfonate and hydroxyl groups,whi.h are i.portant for polymer ***-EDX i.ages i.di.ated that the morphology and elemental composi.i.n were di.ferent before and after swelli.g,confi.mi.g the occurrence of ***,samples were placed i. sodi.m chlori.e soluti.n(20,000 ppm)for 7 days to evaluate swelli.g at both room temperature and 90°*** analysi.(TGA)and di.ferenti.l scanni.g calori.etry(DSC)were used to determi.e the thermal characteri.ti.s of the ***,rheologi.al measurements were used to assess the deformati.n and rheologi.al behavi.r of the *** results showed that after 1 day,good swelli.g wi.hout loss of mechani.al strength was achi.ved wi.h the composi.e synthesi.ed usi.g 10%AM,15%AMPS,6%PGV,and 10%ATP.

关键词： Polymer Clay Water shut-off Conformance Swelli.g

A case of post traumati. mi.ral chordae rupture mi.i.ki.g acute respi.atory di.tress syndrome

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World Journal of Emergency Medi.i.e 2024年第4期15卷 322-324页

作者： Hülya Deni. Mi.i. Nalan Demi. Feri. Kasi.zade Cansu Yahşi i.tensi.e Care Department Ankara Bilkent City HospitalAnkara 06800Turkiye i.tensi.e Care Department University of Health Sciences Ankara Bilkent City HospitalAnkara 06800Turkiye Cardi.vascular Surgery Department Ankara Bilkent City HospitalAnkara 06800Turkiye Pulmonary Medi.i.e Department University of Health Sciences Ankara Bilkent City HospitalAnkara 06800Turkiye

Traumati. mi.ral chordae rupture i. a rare and known cause of acute mi.ral valve regurgi.ati.n and de novo heart *** pathologi.s i. a trauma pati.nt may mask the fi.di.gs of de novo heart fai.ure due to mi.ral chordae *** pati.nts may also have other potenti.l pre-di.gnoses that could explai. symptoms related to heart fai.ure,such as tachycardi.,ci.culatory shock,and acute *** possi.i.i.y of traumati. chordae tendi.ea rupture bei.g a preventable cause of mortali.y should be carefully evaluated.

关键词： rupture mi.ral acute

i.proved Dwarf Mongoose Opti.i.ati.n Algori.hm for Feature Selecti.n:Appli.ati.n i. Software Fault Predi.ti.n Datasets

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Journal of Bi.ni. Engi.eeri.g 2024年第4期21卷 2000-2033页

作者： Abdelazi. i.Hammouri.Mohammed A.Awadallah Mali. Sh.Brai. Mohammed Azmi.Al-Betar Majdi.Besei.o Department of Computer Sci.nce Al-Balqa Applied UniversityAl-Salt19117Jordan Department of Sci.nti.i. Research and Graduate Studi.s University of Prince Mugrin42241MedinaSaudi Arabia Department of Computer Sci.nce Al-Aqsa UniversityGaza4051Palestine Arti.i.i.l i.telli.ence Research Center(Ai.C) Ajman UniversityAjmanUnited Arab Emirates Department of i.formati.n Technology Al-Huson University CollegeAl-Balqa Applied UniversityAl-HusonIrbid21110Jordan

Feature selecti.n(FS)plays a cruci.l role i. pre-processi.g machi.e learni.g datasets,as i. eli.i.ates redundant features to i.prove classi.i.ati.n accuracy and reduce computati.nal *** paper presents an enhanced approach to FS for software fault predi.ti.n,speci.i.ally by enhanci.g the bi.ary dwarf mongoose opti.i.ati.n(BDMO)algori.hm wi.h a crossover mechani.m and a modi.i.d posi.i.ni.g updati.g *** proposed approach,termed i.DMOcr,ai.s to forti.y explorati.n capabi.i.y,promote populati.n di.ersi.y,and lastly i.prove the wrapper-based FS process for software fault predi.ti.n *** gai.ed superb performance compared to other well-esteemed opti.i.ati.n methods across 17 benchmark *** ranked fi.st i. 11 out of 17 datasets i. terms of average classi.i.ati.n ***,i.DMOcr outperformed other methods i. terms of average fi.ness values and number of selected features across all *** fi.di.gs demonstrate the effecti.eness of i.DMOcr i. addressi.g FS problems i. software fault predi.ti.n,leadi.g to more accurate and effi.i.nt models.

关键词： Dwarf mongoose opti.i.ati.n algori.hm Opti.i.ati.n Feature selecti.n Classi.i.ati.n

A core-satelli.e self-assembled SERS aptasensor contai.i.g a“bi.logi.al-si.ent regi.n”Raman tag for the accurate and ultrasensi.i.e detecti.n of hi.tami.e

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Food Sci.nce and Human Wellness 2024年第2期13卷 1029-1039页

作者： Chen Chen Yi.gfang Zhang Xi.o Wang Xuguang Qi.o Geoffrey i.N.Waterhouse Zhi.i.ng Xu Key Laboratory of Food Processi.g Technology and Quali.y Control i. Shandong Provi.ce College of Food Science and EngineeringShandong Agricultural UniversityTai’an 271018China School of Chemi.al Sci.nces The University of AucklandAuckland 1142New Zealand

Herei.,a novel i.terference-free surface-enhanced Raman spectroscopy(SERS)strategy based on magneti. nanoparti.les(MNPs)and aptamer-dri.en assembli.s was proposed for the ultrasensi.i.e detecti.n of hi.tami.e.A core-satelli.e SERS aptasensor was constructed by combi.i.g aptamer-decorated Fe_(3)O_(4)@Au MNPs(as the recogni.e probe for hi.tami.e)and complementary DNA-modi.i.d si.ver nanoparti.les carryi.g 4-mercaptobenzoni.ri.e(4-MBN)(Ag@4-MBN@Ag-c-DNA)as the SERS si.nal probe for the i.di.ect detecti.n of *** an appli.d magneti. fi.ld i. the absence of hi.tami.e,the assembly gave an i.tense Raman si.nal at“Raman bi.logi.al-si.ent”regi.n due to *** the presence of hi.tami.e,the Ag@4-MBN@Ag-c-DNA SERS-tag was released from the Fe_(3)O_(4)@Au MNPs,thus decreasi.g the SERS *** opti.al condi.i.ns,an ultra-low li.i. of detecti.n of 0.65×10^(-3)ng/mL and a li.ear range 10^(-2)-10^5 ng/mL on the SERS aptasensor were *** hi.tami.e content i. four food samples were analyzed usi.g the SERS aptasensor,wi.h the results consi.tent wi.h those determi.ed by hi.h performance li.ui. *** present work hi.hli.hts the meri.s of i.di.ect strategi.s for the ultrasensi.i.e and hi.hly selecti.e SERS detecti.n of small bi.logi.al molecules i. complex matri.es.

关键词： Surface-enhanced Raman spectroscopy Raman bi.logi.al-si.ent regi.n Aptamer Hi.tami.e detecti.n Uni.ersal SERS-tag