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Intelligent Ma.hine Lea.ning Ba.ed Bra.n Tumor Segmenta.ion through Multi-La.er Hybrid U-Net with CNN Fea.ure Integra.ion

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Computers, Ma.eria.s & Continua 2024年第4期79卷 1301-1317页

作者： Sha.a. j.Ma.eba.y Depa.tment of Informa.ion Technology Faculty of Computing and Information TechnologyKing Abdulaziz UniversityP.O.Box 344Rabigh21911Saudia Arabia

Bra.n tumors a.e a.pressing public hea.th concern, cha.a.terized by their high morta.ity a.d morbidity ***, the ma.ua. segmenta.ion of bra.n tumors rema.ns a.la.orious a.d error-prone ta.k, necessita.ingthe development of more precise a.d efficient methodologies. To a.dress this formida.le cha.lenge, we proposea. a.va.ced a.proa.h for segmenting bra.n tumorMa.netic Resona.ce Ima.ing (MRI) ima.es tha. ha.nesses theformida.le ca.a.ilities of deep lea.ning a.d convolutiona. neura. networks (CNNs). While CNN-ba.ed methodsha.e displa.ed promise in the rea.m of bra.n tumor segmenta.ion, the intrica.e na.ure of these tumors, ma.kedby irregula. sha.es, va.ying sizes, uneven distribution, a.d limited a.a.la.le da.a. poses substa.tia. obsta.les toa.hieving a.cura.e sema.tic segmenta.ion. In our study, we introduce a.pioneering Hybrid U-Net fra.ework tha.sea.lessly integra.es the U-Net a.d CNN a.chitectures to surmount these cha.lenges. Our proposed a.proa.hencompa.ses preprocessing steps tha. enha.ce ima.e visua.iza.ion, a.customized la.ered U-Net model ta.loredfor precise segmenta.ion, a.d the inclusion of dropout la.ers to mitiga.e overfitting during the tra.ning ***, we levera.e the CNN mecha.ism to exploit contextua. informa.ion within bra.n tumorMRI ima.es,resulting in a.substa.tia. enha.cement in segmenta.ion *** experimenta. results a.test to the exceptiona.performa.ce of our fra.ework, with a.cura.y ra.es surpa.sing 97% a.ross diverse da.a.ets, showca.ing therobustness a.d effectiveness of our a.proa.h. Furthermore, we conduct a.comprehensive a.sessment of ourmethod’s ca.a.ilities by eva.ua.ing va.ious performa.ce mea.ures, including the sensitivity, j.cca.d-index, a.dspecificity. Our proposed model a.hieved 99% a.cura.y. The implica.ions of our findings a.e profound. Theproposed Hybrid U-Net model emerges a. a.highly promising dia.nostic tool, poised to revolutionize bra.n tumorima.e segmenta.ion for ra.iologists a.d clinicia.

关键词： Bra.n tumor Hybrid U-Net CLa.E tra.sfer lea.ning MRI ima.es

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Compressive property a.d energy a.sorption cha.a.teristic of interconnected porous Mg-Zn-Y a.loys with a.j.sting Y a.dition

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j.urna. of Ma.nesium a.d a.loys 2024年第1期12卷 171-185页

作者： j.a.Liu S.j.Liu B.Wa.g W.B.Sun X.j.Liu Z.W.Ha. College of Ma.eria.s Science a.d Engineering Key Laboratory of Automobile Materials(Ministry of Education)Jilin UniversityChangchun 130022PR China Key La.ora.ory of Bionic Engineering(Ministry of Educa.ion) College of Biological and Agricultural EngineeringJilin UniversityChangchun130022PR China Weiha. Institute for Bionics-j.lin University Weihai 264205PR China

In this study,interconnected porous Mg-2Zn-xY a.loys with different pha.e compositions were prepa.ed by va.ious Y a.ditions(x=0.4,3,a.d 6 wt.%)to a.j.st the compressive properties a.d energy a.sorption *** cha.a.teriza.ion methods were then a.plied to identify the microstructure of the porous Mg-Zn-Y a.d describe the deta.ls of the second *** tests were performed a. room tempera.ure(RT),200℃,a.d 300℃to study the impa.t of the Y a.dition a.d testing tempera.ure on the compressive properties of the porous *** experimenta. results showed tha. a.high Y content promotes a.microstructure refinement a.d increa.es the volume fra.tion of the second *** the Y content increa.es,different Mg-Zn-Y terna.y pha.es a.pea.:I-pha.e(Mg_(3)Zn_(6)Y),W-pha.e(Mg_(3)Zn_(3)Y_(2)),a.d LPSO pha.e(Mg_(12)ZnY).When the Y content ra.ges between 0.4%a.d 6%,the compressive strength increa.es from 6.30MPa.to 9.23 MPa.a.d the energy a.sorption ca.a.ity increa.es from 7.33 Mj.m^(3)to 10.97 Mj.m^(3)a. RT,which is ma.nly a.tributed to the pha.e composition a.d volume fra.tion of the second ***,the a.era.e energy a.sorption efficiency is independent of the Y *** a.dition,the compressive deforma.ion beha.iors of the porous Mg-Zn-Y a.e a.tered by the testing *** compressive strength a.d energy a.sorption ca.a.ity of the porous Mg-Zn-Y decrea.e due to the softening effect of the high tempera.ure on the *** deforma.ion beha.iors a. different tempera.ures a.e fina.ly observed to reflect the fa.lure mecha.isms of the struts.

关键词： Porous ma.nesium Ra.e ea.th elements Microstructure Compressive beha.ior Energy a.sorption cha.a.teristic

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The qua.i-Gra.ia. solution of a.non-commuta.ive extension of the higher-order nonlinea. Schr?dinger equa.ion

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Communica.ions in Theoretica. Physics 2024年第3期76卷 51-61页

作者： H W a.Ria. j.Lin Depa.tment of Physics Zhejiang Normal UniversityJinhua 321004China

The nonlinea. Schr?dinger(NLS)equa.ion,which incorpora.es higher-order dispersive terms,is widely employed in the theoretica. a.a.ysis of va.ious physica. *** this study,we explore the non-commuta.ive extension of the higher-order NLS *** trea. rea. or complex-va.ued functions,such a. g_(1)=g_(1)(x,t)a.d g_(2)=g_(2)(x,t)a. non-commuta.ive,a.d employ the La. pa.r a.socia.ed with the evolution equa.ion,a. in the commuta.ion *** derive the qua.i-Gra.ia. solution of the system by employing a.bina.y Da.boux *** soliton solutions a.e presented explicitly within the fra.ework of *** visua.ly understa.d the dyna.ics a.d solutions in the given exa.ple,we a.so provide simula.ions illustra.ing the a.socia.ed ***,the solution ca. be used to study the sta.ility of pla.e wa.es a.d to understa.d the genera.ion of periodic pa.terns within the context of modula.iona. insta.ility.

关键词： integra.le systems Da.boux tra.sforma.ion solitons

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Concentra.ion of Copper, Zinc, Lea., Ca.mium, a.d Nickel in the Incinera.or Bottom a.h in Five County Hospita.s in Kenya

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j.urna. of Geoscience a.d Environment Protection 2024年第6期12卷 90-114页

作者： Muriithi j. Githinj. Pa.l M. Nj.gu Zippora. Nga.ga.Moha.ed Ka.a.a Institute of Tropica. Medicine a.d Infectious Disea.es (ITROMID) Jomo Kenyatta University of Agriculture and Technology (JKUAT) Nairobi Kenya Institute of Energy a.d Environmenta. Technology Jomo Kenyatta University of Agriculture and Technology (JKUAT) Nairobi Kenya a.a.emic Research and Student Affairs South Eastern Kenya University Kitui Kenya School of Public Hea.th Amref International University Nairobi Kenya

Hea.thca.e wa.tes conta.n potentia.ly ha.mful microorga.isms, inorga.ic a.d orga.ic compounds tha. pose a.risk to huma. hea.th a.d the environment. Incinera.ion is a.common method employed in hea.thca.e wa.te ma.a.ement to reduce volume, qua.tity, toxicity a. well a. elimina.ion of microorga.isms. However, some of the substa.ces rema.n uncha.ged during incinera.ion a.d become pa.t of bottom a.h, such a. hea.y meta.s a.d persistent orga.ic polluta.ts. Monitoring of pollution by hea.y meta.s is importa.t since their concentra.ions in the environment a.fect public hea.th. The goa. of this study wa. to determine the levels of Copper (Cu), Zinc (Zn) Lea. (Pb), Ca.mium (Cd) a.d Nickel (Ni) in the incinera.or bottom a.h in five selected County hospita.s in Kenya. Bottom a.h sa.ples were collected over a.period of six months. Sa.ple prepa.a.ion a.d trea.ment were done using sta.da.d methods. a.a.ysis of the hea.y meta.s were done using a.omic a.sorption spectrophotometer, model a.-6200. One-Wa. a.a.ysis of Va.ia.ce (a.OVa. wa. performed to determine whether there were significa.t differences on the mea. levels of Cu, Zn, Pd, Cd a.d Ni in incinera.or bottom a.h from the five sa.pling loca.ions. a.post-hoc Tukey’s Test (HSD) wa. used to determine if there were significa.t differences between a.d within sa.ples. The significa.t differences were a.cepted a. p ≤ 0.05. To sta.da.dize the results, overa.l mea. of ea.h meta. from ea.h site wa. ca.cula.ed. The meta. mea. concentra.ion va.ues were compa.ed with existing permissible levels set by the WHO. The concentra.ions (mg/kg) were in the ra.ge of 102.27 - 192.53 for Cu, Zn (131.68 - 2840.85), Pb (41.06 - 303.96), Cd (1.92 - 20.49) wherea. Ni wa. (13.83 - 38.27) with a.mea. of 150.76 ± 77.88 for Copper, 131.66 ± 1598.95 for Zinc, 234.60 ± 262.76 for Lea., 12.256 ± 10.86 for Ca.mium a.d 29.45 ± 18.24 for Nickel a.ross the five sa.pling loca.ions. There were significa.t differences between levels determined by one-wa. a.OVa.of Zn (

关键词： Hea.thca.e Wa.te Disposa. Public Hea.th Environment Incinera.ion Hea.y Meta.s Bottom a.h

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a.cura.y Enha.cement of the Folin-Cioca.teu Method for Propolis

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a.erica. j.urna. of a.a.ytica. Chemistry 2024年第8期15卷 253-267页

作者： Rosilene S. N. Pa.a.otti Pa.lo j. S. Ba.beira Instituto Federa. de Educa. Cincia e Tecnologia de Minas GeraisCampus Formiga Formiga MG Brazil Depa.ta.ento de Qumica Instituto de Cincias Exatas Universidade Federal de Minas Gerais Belo Horizonte MG Brazil

This study presents a. optimiza.ion of the Folin-Cioca.teu spectrophotometric method for the determina.ion of tota. phenol content. Multiva.ia.e optimiza.ion using fa.toria. pla.ning 22 with a.centra. point a.d centra. composite pla.ning wa. constructed to eva.ua.e the influence of va.ia.les in the process a.d ma.imize ra.ia.ion a.sorption with minima. ra.ia.ion sca.tering ca.sed by solid forma.ion. X-ra. fluorescence a.d X-ra. diffra.tion spectrometry were used to eva.ua.e the chemica. composition of solids formed a.d nephelometric a.d spectrophotometric studies were a.so used to eva.ua.e whether the type, origin, dilution a.d dry extra.t contents of commercia. propolis extra.ts would significa.tly influence the increa.e in ra.ia.ion sca.tering a.d a.sorption. The optimized methodology a.ded severa. a.va.ta.es, such a. reduction of rea.ents, time a.a.ysis, a.d higher a.cura.y.

关键词： Folin-Cioca.teu Multiva.ia.e Optimiza.ion Propolis Tota. Phenol

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Feta. Hea. Compression: Its Possible Role in Neurologic Inj.ry

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Open j.urna. of Obstetrics a.d Gynecology 2024年第1期14卷 124-143页

作者： Ba.ry S. Schifrin Bria. j. Koos Wa.ne R. Cohen Depa.tment of Obstetrics a.d Gynecology The Western University of Health Sciences Pomona USA The Da.id Geffen School of Medicine a. UCLA Los Angeles USA The University of a.izona.College of Medicine Tucson USA

It is widely a.sumed tha. feta. ischemic bra.n inj.ry during la.or derives a.most exclusively from severe, systemic hypoxemia.with ma.ked neona.a. depression a.d a.idemia. Severe a.phyxia. however, is one of severa. ca.ses of perina.a. neurologica. inj.ry a.d ma. not be the most common;most neona.es dia.nosed with hypoxic-ischemic encepha.opa.hy do not ha.e evidence of severe a.phyxia. Sepsis, direct bra.n tra.ma. a.d drug or toxin exposure a.count for some ca.es, while mecha.ica. forces of la.or a.d delivery tha. increa.e feta. intra.ra.ia. pressure sufficiently to impa.r bra.n perfusion ma. a.so contribute. Beca.se of bony complia.ce a.d mobile suture lines, the feta. skull cha.ges sha.e a.d redistributes cerebrospina. fluid during la.or a.cording to constra.nts imposed by contra.tions, a.d bony a.d soft tissue elements of the birth ca.a. a. the hea. descends. These a.commoda.ions, including the increa.e in intra.ra.ia. pressure, a.e a.a.tive a.d necessa.y for efficient descent of the hea. while sa.egua.ding cerebra. blood flow. a.tonomic reflexes media.ed through centra. receptors norma.ly provide a.ple protection of the bra.n from the considera.le pressure exerted on the skull. On occa.ion, those forces, which a.e tra.smitted intra.ra.ia.ly, ma. overcome the va.ious a.a.tive a.a.omica., ca.diova.cula., meta.olic, a.d neurologica. mecha.isms tha. ma.nta.n cerebra. perfusion a.d oxygen a.a.la.ility, resulting in ischemic bra.n inj.ry. a.cepting the notion of a.potentia.ly a.verse impa.t of feta. hea. compression suggests tha. a.oida.ce of excessive uterine a.tivity a.d of relentless pushing without stea.y progress in descent ma. offer protection for the feta. bra.n during pa.turition. Excessive hea. compression should be considered in the differentia. dia.nosis of ischemic encepha.opa.hy.

关键词： Feta. Bra.n Inj.ry Feta. Hea. Compression Ischemic Encepha.opa.hy Neona.a. Encepha.opa.hy

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Hea. a.d Ma.s Tra.sfer for a.Na.ofluid Flow in Fluidized Bed Dryer in Presence of Induced Ma.netic Field

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j.urna. of a.plied Ma.hema.ics a.d Physics 2024年第4期12卷 1401-1425页

作者： Kiptum j. Purity Ma.hew N. Kinya.j.i Edwa.d R. Onya.go Pa. a.rica. University Institute for Ba.ic Sciences Technology and Innovation Nairobi Kenya Depa.tment of Pure a.d a.plied Ma.hema.ics Jomo Kenyatta University of Agriculture and Technology Nairobi Kenya

This resea.ch enta.ls the study of hea. a.d ma.s tra.sfer of na.ofluid flow in a.fluidized bed dryer used in tea.drying processes in presence of induced ma.netic field. a.ma.hema.ica. model describing the fluid flow in a.Fluidized bed dryer wa. developed using the nonlinea. pa.tia. differentia. equa.ions. Due to their non-linea.ity, the equa.ions were solved numerica.ly by use of the finite difference method. The effects of physica. flow pa.a.eters on velocity, tempera.ure, concentra.ion a.d ma.netic induction profiles were studied a.d results were presented gra.hica.ly. From the ma.hema.ica. a.a.ysis, it wa. deduced tha. a.dition of silver na.opa.ticles into the fluid flow enha.ced velocity a.d tempera.ure profiles. This led to improved hea. tra.sfer in the fluidized bed dryer, hence a.plifying the tea.drying process. Furthermore, it wa. noted tha. induced ma.netic field tends to decrea.e the fluid velocity, which results in uniform distribution of hea. lea.ing to efficient hea. tra.sfer between the tea.pa.ticles a.d the fluid, thus improving the drying process. The resea.ch findings provide informa.ion to industries on wa.s to optimize therma. performa.ce of fluidized bed dryers.

关键词： Hea. Tra.sfer Induced Ma.netic Field Na.ofluid Fluidized Bed Dryer

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Selection of digita. fa.rica.ion technique in the construction industry--a.multi-criteria.decision-ma.ing a.proa.h

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Frontiers of Structura. a.d Civil Engineering 2024年第7期18卷 977-997页

作者： M.P.Sa.a.Ma.IMa.UDa. j.j.Ya.Ra.a.H Depa.tment of Structura. a.d Geotechnica. Engineering School of Civil EngineeringVellore Institute of TechnologyVellore 632014India

Digita. fa.rica.ion techniques,in recent deca.es,ha.e provided the ba.is of a.susta.na.le revolution in the construction ***,selecting the digita. fa.rica.ion method in terms of ma.ufa.tura.ility a.d functiona.ity requirements is a.complex *** pa.er presents a.terna.ives a.d criteria.for selection of digita. fa.rica.ion techniques by a.opting the multi-criteria.decision-ma.ing *** a.terna.ives considered in the study a.e concrete three-dimensiona.(3D)printing,shotcrete,sma.t dyna.ic ca.ting,ma.eria. intrusion,mesh molding,inj.ction concrete 3D printing,a.d thin forming *** criteria.include formwork utiliza.ion,reinforcement incorpora.ion,geometrica. complexity,ma.eria. enha.cement,a.sembly complexity,surfa.e finish,a.d build *** demonstra.es different multi-criteria.decision-ma.ing techniques,with both subj.ctive a.d obj.ctive weighting *** given ra.king is ba.ed on the current condition of digita. fa.rica.ion in the construction *** study revea.s tha. in the selection of digita. fa.rica.ion techniques,the criteria.including reinforcement incorpora.ion,build a.ea.a.d geometrica. complexity pla. a.pivota. role,collectively a.counting for nea.ly 70% of the overa.l *** the eva.ua.ed techniques,concrete 3D printing emerged a. the best performer,however the shotcrete a.d mesh molding techniques in the second a.d third positions.

关键词： digita. fa.rica.ion multicriteria.decision-ma.ing concrete 3D printing

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Reply to the note by Li Pia.i et a..

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Defence Technology（防务技术） 2024年第1期31卷 603-606页

作者： T.Li Pia.i j.Weerheij. L.j.Sluys TU Delft Stevinweg 12628 CNDelftthe Netherlands TNO PO Box 452280 AARijswijkthe Netherlands NLDA Faculty of Military Sciences1781 CADen Helderthe Netherlands

In 2017,a.ba.listic phenomenologica. model wa. proposed by the a.thors of Ref.[1] to numerica.ly simula.e the experimenta. depths of sma.l ca.iber proj.ctiles impa.ting wa.ls ma.e of *** opportunity for a.new model in the field revea.ed from the observa.ion tha. two older models recently used by the a.thors of Ref.[2] sha.ed a.linea. rela.ionship between the penetra.ion depth P a.d the impa.ting velocity v_(O).

关键词： Penetra.ion a.obe Modeling

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Wetta.ility,rea.tivity,a.d interfa.e structure in Mg/Ni system

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j.urna. of Ma.nesium a.d a.loys 2024年第2期12卷 659-672页

作者： S.Terlicka.N.Sobcza. Ł.Ma.0}P.Da.ła. j.j.Sobcza. Institute of Meta.lurgy a.d Ma.eria.s Science Polish Academy of Sciences25 Reymonta Str.KrakowPoland Fa.ulty of Foundry Engineering AGH University23 Reymonta Str.KrakowPoland

The sessile drop method wa. a.plied to the experimenta. investiga.ion of the wetting a.d sprea.ing beha.iors of liquid Mg drops on pure Ni *** compa.ison,the experiments were performed in two va.ia.ts:(1)using the Ca.illa.y Purifica.ion(CP)procedure,which a.lows the non-conta.t hea.ing a.d squeezing of a.pure oxide-free Mg drop;(2)by cla.sica. Conta.t Hea.ing(CH)*** high-tempera.ure tests were performed under isotherma. conditions(CP:760℃for 30 s;CH:715℃for 300 s)using a.+5 wt%H_(2) *** the sessile drop tests,ima.es of the Mg/Ni couples were recorded by CCD ca.era.(57 fps),which were then a.plied to ca.cula.e the conta.t a.gles of meta./substra.e *** a.d tra.smission electron microscopy a.a.yses,both coupled with energy-dispersive X-ra. spectroscopy,were used for deta.led structura. cha.a.teriza.ion of the solidified *** wa. found tha. a. oxide-free Mg drop obta.ned by the CP procedure showed a.wetting phenomenon on the Ni substra.e(a. a.era.e conta.t a.gleθa.t sprea.ing a.d good wetting over the Ni substra.e(θ_((CP))~20°in 5 s)to form a.fina. conta.t a.gle ofθ_(f(CP))~18°.In contra.t,a.different wetting beha.ior wa. observed for the CH procedure,where the una.oida.le prima.y oxide film on the Mg surfa.e blocked the sprea.ing of liquid Mg showing a.pa.ently non-wetting beha.ior a.ter 300 s conta.t a. the test ***,in both ca.es,the deep cra.ers formed in the Ni substra.es under the Mg drops a.d significa.t cha.ge in the structure of initia.ly pure Mg drops to Mg-Ni a.loys suggest a.strong dissolution of Ni in liquid Mg a.d a.pa.ent va.ues of the fina. conta.t a.gles mea.ured for the Mg/Ni system.

关键词： Ma.nesium-ba.ed a.loys Sessile drop tests Ca.illa.y purifica.ion procedure Wetta.ility Rea.tivity Conta.t a.gle

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