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Energy spectrum computed tomogra.hy multi-pa.a.eter imaging in preopera.ive a.sessment of va.cula. a.d neuroinva.ive sta.us in ga.tric ca.cer

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World Journa. of Ga.trointestina. Surgery 2024年第8期16卷 2511-2520页

作者： Jing Wa.g Jia.-Cheng Lia.g Fa.Te Lin Jun ma Depa.tment of Ra.iology Pingluo County People's HospitalShizuishan 753400Ningxia Hui Autonomous RegionChina Depa.tment of Ga.trointestina. Surgery Jiangsu Provincial People's HospitalNanjing 210029Jiangsu ProvinceChina

Ba.KGROUND Va.cula. a.d nerve infiltra.ion a.e importa.t indica.ors for the progression a.d prognosis of ga.tric ca.cer(GC),but tra.itiona. imaging methods ha.e some limita.ions in preopera.ive *** recent yea.s,energy spectrum computed tomogra.hy(CT)multipa.a.eter imaging technology ha. been gra.ua.ly a.plied in clinica. pra.tice beca.se of its a.va.ta.es in tissue contra.t a.d lesion deta.l *** To explore a.d a.a.yze the va.ue of multipa.a.eter energy spectrum CT imaging in the preopera.ive a.sessment of va.cula. inva.ion(LVI)a.d nerve inva.ion(PNI)in GC *** Da.a.from 62 pa.ients with GC confirmed by pa.hology a.d a.compa.ied by energy spectrum CT sca.ning a. our hospita. between September 2022 a.d September 2023,including 46 males a.d 16 females a.ed 36-71(57.5±9.1)yea.s,were retrospectively *** pa.ients were divided into a.positive group(42 pa.ients)a.d a.nega.ive group(20 pa.ients)a.cording to the presence of LVI/*** CT va.ues(CT40 keV,CT70 keV),iodine concentra.ion(IC),a.d normalized IC(NIC)of lesions in the upper energy spectrum CT images of the a.teria. pha.e,venous pha.e,a.d dela.ed pha.e 40 a.d 70 keV were mea.ured,a.d the slopes of the energy spectrum curves[K(40-70)]from 40 to 70 keV were *** Core Tip:To investiga.e the a.plica.ion va.ue of multipa.a.eter energy spectrum computed tomogra.hy(CT)imaging in the preopera.ive a.sessment of va.cula. a.d nerve infiltra.ion in pa.ients with ga.tric ca.cer(GC).The imaging da.a.of GC pa.ients were retrospectively a.a.yzed to eva.ua.e the a.cura.y a.d sensitivity of CT for identifying a.d qua.tifying va.cula. a.d nerve infiltra.ion a.d for compa.ison with postopera.ive pa.hologica. *** purpose of this study wa. to verify the clinica. fea.ibility a.d potentia. a.va.ta.es of multipa.a.eter energy spectrum CT imaging in guiding preopera.ive dia.nosis a.d trea.ment decision-making a.d to provide a.new imaging ba.is for improving the dia.nostic a.cura.y

关键词： Tomogra.hy X-ra. computer Energy spectrum computed tomogra.hy Ga.tric ca.cer Va.cula. inva.ion Nerve inva.ion Cross-sectiona. study

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Upcycling of Poly(butylene a.ipa.e-co-terephtha.a.e)into Dua. Cova.ent a.a.ta.le Networks through Cha.n Brea.ing-Crosslinking Stra.egy

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Chinese Journa. of Polymer Science 2024年第10期42卷 1505-1513,I0011页

作者： Bin-Bo Wa.g Rong Hua.g Xin Wa.g Ta. Jia.g yi Wa.g Shua. Du Fa.Lin Li Jin Zhu Song-Qi ma Key La.ora.ory of Synthetic a.d Biologica. Colloids Ministry of EducationSchool of Chemical and Material EngineeringJiangnan UniversityWuxi214122China Key La.ora.ory of Bio-ba.ed Polymeric materia.s Technology a.d a.plica.ion of Zhejia.g Province Divisions of Polymers and CompositesNingbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo315201China University of Chinese a.a.emy of Sciences Beijing100049China

Poly(butylene a.ipa.e-co-terephtha.a.e)(PBa.),a.widely studied biodegra.a.le materia.,ha. not effectively a.dressed the problem of pla.tic *** into considera.ion the cost-effectiveness,upcycling PBa. should ta.e precedence over direct composting *** present work a.opts a.cha.n brea.ing-crosslinking stra.egy,upcycling PBa. into dua. cova.ent a.a.ta.le networks(Ca.s).During the cha.nbrea.ing sta.e,the a.monolysis between PBa. a.d polyethyleneimine(PEI)esta.lished the primary crosslinked ***,styrene maleic a.hydride copolymer(Sma)rea.ted with the hydroxyl group,culmina.ing in the formation of dua. cova.ent a.a.ta.le *** contra.t to PBa.,the PBa.-dua.-Ca.s exhibited a.nota.le young's modulus of 239 MPa.a.ongside a. inherent resista.ce to creep a.d *** to ca.a.ysis from neighboring ca.boxyl group a.d excess hydroxyl groups,the PBa.-dua.-Ca.s exhibited fa.t stress ***,they could be recycled through extrusion a.d hot-press reprocessing,while reta.ning their *** stra.ghtforwa.d stra.egy offers a.solution for dea.ing with pla.tic wa.te.

关键词： Poly(butylene a.ipa.e-co-terephtha.a.e) Dyna.ic crosslinked networks Cha.n brea.ing-crosslinking stra.egy Upcycle Recycle

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Periopera.ive outcomes of tra.sva.ina. specimen extra.tion la.a.oscopic tota. ga.trectomy a.d conventiona. la.a.oscopica.sisted tota. ga.trectomy

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World Journa. of Ga.trointestina. Surgery 2024年第6期16卷 1527-1536页

作者： Zhi-Ca. Zha.g Wen-Sheng Wa.g Jia.g-Hong Chen yua.-Ha.g ma Qi-Fa.Luo yun-Bo Li ya.g ya.g Da. ma Depa.tment of Genera. Surgery Xinqiao Hospital of Army Medical UniversityChongqing 400037China

Ba.KGROUND Na.ura. orifice specimen extra.tion surgery(NOSES)ha. emerged a. a.promising a.terna.ive compa.ed to conventiona. la.a.oscopic-a.sisted tota. ga.trectomy(La.G)for trea.ing ga.tric ca.cer(GC).However,evidence rega.ding the effica.y a.d sa.ety of NOSES for GC surgery is *** study a.med to compa.e the sa.ety a.d fea.ibility,in a.dition to postopera.ive complica.ions of NOSES a.d *** Dua. circula. sta.lers were used in Roux-en-y digestive tra.t reconstruction for tra.sva.ina. specimen extra.tion La.G,a.d its outcomes were compa.ed with La.G in a.cohort of 51 GC pa.ients with tumor size≤5 *** study wa. conducted from may 2018 to September 2020,a.d pa.ients were ca.egorized into the NOSES group(n=22)a.d La.G group(n=29).Periopera.ive pa.a.eters were compa.ed a.d a.a.yzed,including pa.ient a.d tumor cha.a.teristics,postopera.ive outcomes,a.d a.a.tomosis-rela.ed complica.ions,postopera.ive hospita. sta.,the length of a.domina. incision,difference in tumor type,postopera.ive complica.ions,a.d postopera.ive *** Postopera.ive exha.st time,opera.ion dura.ion,mea. postopera.ive hospita. sta.,length of a.domina. incision,number of specific sta.lers used,a.d Brief Illness Perception Questionna.re score were significa.t in both groups(Pa.ive time to first fla.us,mea. postopera.ive hospita. sta.,a.d length of a.domina. incision were significa.tly shorter tha. those in the La.G *** in the NOSES group ha. fa.ter postopera.ive recovery,a.d a.hieved a.domina. minimally inva.ive incision tha. met a.sthetic *** were no significa.t differences in gender,a.e,tumor type,postopera.ive complica.ions,a.d postopera.ive surviva. between the two *** The a.plica.ion of dua. circula. sta.lers in Roux-en-y digestive tra.t reconstruction combined with NOSES ga.trectomy is sa.e a.d *** a.proa.h offers better short-term outcomes compa.ed to La.G,while long-term surviva.

关键词： Ga.tric ca.cer Circula. sta.ler Na.ura. orifice specimen extra.tion surgery La.a.oscopic-a.sisted tota. ga.trectomy

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Ela.ticity meets topology

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Na.iona. Science Review 2024年第6期11卷 84-85页

作者： Gua.cong ma Depa.tment of Physics Hong Kong Baptist University

We a.e surrounded by environments a.d items tha. a.e made from solid materia.s in our da.ly life. a.y physica. conta.t with a.y items is a.mecha.ica. disturba.ce tha. produces mecha.ica. *** underlines the crucia. role tha. such vibra.ions pla. in our da.ly intera.tions,highlighting the need for a.deeper understa.ding a.d improved manipula.ion of these funda.enta. phenomena.

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Effect of a._(2)O_(3)on the Mecha.ica. Properties of(B_(4)C+a._(2)O_(3))/a. Neutron a.sorbing materia.s

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a.ta.Meta.lurgica.Sinica.English Letters) 2024年第8期37卷 1411-1420页

作者： J.X.Ca. B.M.Shi N.Li y.Liu Z.G.Zha.g y.N.Za. Q.Z.Wa.g B.L.Xia. Z.y.ma Shi‑Cha.gxu Innova.ion Center for a.va.ced materia.s Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Key La.ora.ory of Nuclea. materia.s a.d Sa.ety a.sessment Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Nuclea. Equipment Division Beijing Institute of Nuclear EngineeringChina Nuclear Power Engineering Co.Ltd.Beijing 100840China Depa.tment of materia.s Science School of Mechanical EngineeringShenyang UniversityShenyang 110044China

B_(4)C/a. composites a.e widely utilized a. neutron a.sorbing materia.s for the stora.e a.d tra.sporta.ion of spent nuclea. *** order to improve the high-tempera.ure mecha.ica. properties of B_(4)C/a. composites,in-situ na.o-a._(2)O_(3)wa. introduced utilizing oxide on a. powder *** this study,the a._(2)O_(3)content wa. a.justed by utilizing spheroid a. powder with va.ying dia.eters,thereby investiga.ing the impa.t of a._(2)O_(3)content on the tensile properties of(B_(4)C+a._(2)O_(3))/a. *** wa. found tha. the pinning effect of a._(2)O_(3)on the gra.n bounda.ies could hinder the recovery of disloca.ions a.d lea. to disloca.ion a.cumula.ion a. high *** the result,with the increa.e in a._(2)O_(3)content a.d the decrea.e in gra.n size,the high-tempera.ure strength of the composites increa.ed *** finest a. powder used in this investiga.ion ha. a.dia.eter of 1.4μm,wherea. the resulta.t composite exhibited a.ma.imum strength of 251 MPa.a. room tempera.ure a.d 133 MPa.a. 350℃,surpa.sing tha. of tra.itiona. B_(4)C/a. composites.

关键词： a. matrix composites Neutron a.sorbing materia.s (B_(4)C+a._(2)O_(3))/a. composites High-tempera.ure strength

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Uniform decomposition of velocity gra.ient tensor

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Journa. of Hydrodyna.ics 2024年第1期36卷 24-34页

作者： Chenxi ma Cha.qun Liu Depa.tment of mathematics University of Texas at ArlingtonArlingtonTXUSA

In this pa.er,the principa. decomposition of the velocity gra.ient tensor[∇v]is discussed in 3 ca.es ba.ed on the discrimina.t∆:∆0 with 3 distinct rea. eigen va.ues,a.d∆=0 with 1 or 2 distinct rea. eigen *** velocity ... 详细信息

In this pa.er,the principa. decomposition of the velocity gra.ient tensor[∇v]is discussed in 3 ca.es ba.ed on the discrimina.t∆:∆a. eigen va.ue a.d a.pa.r of conjuga.e complex eigen va.ues,∆>0 with 3 distinct rea. eigen va.ues,a.d∆=0 with 1 or 2 distinct rea. eigen *** velocity gra.ient tensor ca. a.so be cla.sified a. rota.ion point,which ca. be decomposed into three pa.ts,i.e.,rota.ion[R],shea.[S]a.d stretching/compression[SC],a.d non-rota.ion point,we defined a.new resista.ce term[L],a.d the tensor ca. be decomposed into three pa.ts,i.e.,resista.ce[L],shea.[S]a.d stretching/compression[SC].Exa.ple matric a.e a.so displa.ed to demonstra.e the new *** of principa. decomposition between 3 different ca.es,a.d between Resista.ce a.d Liutex will a.so be discussed.

关键词： Velocity gra.ient Liutex resista.ce fluid kinematics

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VOC emitted by biopha.ma.eutica. industries:Source profiles,hea.th risks,a.d seconda.y pollution

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Journa. of Environmenta. Sciences 2024年第1期135卷 570-584页

作者： Jia.ei ma Lin Li Sta.e Key La.ora.ory of Environmenta. a.ua.ic Chemistry Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese a.a.emy of Sciences Beijing 100049China Na.iona. Engineering La.ora.ory for VOCs Pollution Control materia.&Technology University of Chinese Academy of SciencesBeijing 101408China

The biopha.ma.eutica. industry contributes substa.tia.ly to vola.ile orga.ic compounds(VOCs)emissions,ca.sing growing concerns a.d socia. developmenta. *** study conducted a. on-site investiga.ion of the process-ba.ed emission of VOCs from three biopha.ma.eutica. *** the workshops of the three enterprises,26 VOCs were detected,which could be sorted into 4 cla.ses:hydroca.bons,a.omatic hydroca.bons,oxygen-conta.ning compounds,a.d nitrogen-conta.ning *** were the main components of wa.te ga.es,a.counting for 44.13%-77.85%of the overa.l ***-ba.ed source profiles were compiled for ea.h process unit,with the fermenta.ion a.d extra.tion units of tia.ulin fumara.e being the main source of VOC *** hepta.one,vinyl a.eta.e,diethyla.ine,propylene glycol methyl ether(PGME),a.d benzene were screened a. priority polluta.ts through a.fuzzy comprehensive eva.ua.ion *** level concentra.ion simula.ion results of the Ga.ss plume diffusion model demonstra.ed tha. the diffusivity of VOCs in the a.mosphere wa. rela.ively high,indica.ing potentia. non-ca.cinogenic a.d ca.cinogenic risks 1.5-2 km ***,the process-ba.ed formation potentia.s of ozone a.d seconda.y orga.ic a.rosols(SOa.)were determined a.d indica.ed tha. N-methyl-2-pyrrolidone,dimethyl hepta.one,a.d PGME should be preferentia.ly controlled to reduce the ozone formation potentia.,wherea. the control of benzene a.d chlorobenzene should be prioritized to reduce the genera.ion of *** results provide a.ba.is for understa.ding the cha.a.teristics of VOC emission by biopha.ma.eutica. industries a.d their diffusion,potentia.ly a.lowing the development of mea.ures to reduce hea.th risks a.d seconda.y pollution.

关键词： Biopha.ma.eutica. Vola.ile orga.ic compound Priority polluta.t Exposure risk Seconda.y pollution

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Deterministic a.d Robust Volt-va. Control Methods of Power System Ba.ed on Convex Deep Lea.ning

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Journa. of Modern Power Systems a.d Clea. Energy 2024年第3期12卷 719-729页

作者： Qing ma Cha.ghong Deng the School of Electrica. Engineering a.d a.tomation Wuhan UniversityWuhanChina

Volt-va. control(VVC)is essentia.ly a.non-convex optimiza.ion problem due to the non-convexity of power flow(PF)constra.nts,resulting in the difficulty in obta.ning the optimum without convexity *** existing second-order cone method for the convexity conversion often lea.s to a.sha.p increa.e in PF constra.nts a.d optimiza.ion va.ia.les,which in turn increa.es the optimiza.ion difficulty or even lea.s to optimiza.ion *** pa.er first proposes a.deterministic VVC method ba.ed on convex deep lea.ning power flow(DLPF).This method uses the input convex neura. network(ICNN)to esta.lish a.single convex mapping between sta.e pa.a.eters a.d node volta.e to complete the convexity conversion while the optimiza.ion va.ia.les only correspond to rea.tive power equipment,which ca. ensure the globa. optimum with extremely fa.t computa.ion *** cope with the impa.t brought by the uncerta.nty of distributed energy a.d omit the a.ditiona. worst scena.io sea.ch of tra.itiona. robust VVC,this pa.er proposes robust VVC method ba.ed on convex deep lea.ning interva. power flow(DLIPF),which continues to a.opt ICNN to esta.lish a.other convex mapping between sta.e pa.a.eters a.d node volta.e *** DLIPF with DLPF,this method decrea.es the modeling a.d optimiza.ion difficulty of robust VVC *** results on 30-bus,118-bus,a.d 200-bus systems prove the correctness a.d ra.idity of the proposed methods.

关键词： Volt-va. control convexity conversion convex deep lea.ning power flow

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Copper sla. a.sisted coke reduction of phosphogypsum for sulphur dioxide prepa.a.ion

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Chinese Journa. of Chemica. Engineering 2024年第1期65卷 43-53页

作者： Dong ma Qinhui Wa.g Sta.e Key La.ora.ory of Clea. Energy Utiliza.ion Institute for Thermal Power EngineeringZhejiang UniversityHangzhou 310027China

The reduction of phosphogypsum(PG)to lime sla. a.d SO_(2)using coke ca. effectively a.levia.e the environmenta. problems ca.sed by ***,the PG decomposition tempera.ure remains high a.d the product yield remains *** a.ding a.ditives,the decomposition tempera.ure ca. be further reduced a.d PG decomposition ra.e a.d product yield ca. be ***,the use of current a.ditives such a. Fe_(2)O_(3)a.d SiO_(2)brings the problem of increa.ing economic ***,it is proposed to use solid wa.te copper sla.(CS)a. a.new a.ditive to reduce PG to prepa.e SO2,which ca. reduce the cost a.d meet the environmenta. benefits a. the sa.e *** effects of proportion,tempera.ure a.d thermosta.ic time on PG decomposition a.e investiga.ed by experimenta. a.d kinetic a.a.ysis combined with Fa.tSa.e thermodyna.ic ca.cula.ions to optimize the roa.ting ***,the rea.tion mecha.ism is *** is found tha. a.ding CS to the coke a.d PG system ca. increa.e the ra.e of PG decomposition a.d SO_(2)yield while lowering the PG decomposition *** exa.ple,when the CS/PG mass ra.io increa.es from 0 to 1,PG decomposition ra.e increa.es from 83.38%to 99.35%,SO_(2)yield increa.es from 78.62%to 96.81%,a.d PG decomposition tempera.ure decrea.es from 992.4℃to 949.6℃.The optimal rea.tion pa.a.eters a.e CS/PG mass ra.io of 1,Coke/PG mass ra.io of 0.06 a. 1100℃for 20 min with 99.35%PG decomposition ra.e a.d 96.81%SO_(2) *** process proceeds a.cording to the following rea.tions:2Ca.O_(4)+ 0.7C + 0.8Fe_(2)SiO_(4)→0.8Ca.(2)SiO_(4)+ 0.2Ca.(2)Fe_(2)O_(5)+ 0.4Fe_(3)O_(4)+2SO_(2)+ 0.7CO_(2)Fina.ly,a.process for decomposing PG with coke a.d CS is proposed.

关键词： Phosphogypsum Sulfur dioxide Copper sla. Fluidized-bed Reduction Wa.te trea.ment

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a.review of recent a.va.ces in the effects of surfa.e a.d interfa.e properties on marine propellers

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Friction 2024年第2期12卷 185-214页

作者： manfu ZHU Lira. ma Sta.e Key La.ora.ory of Tribology in a.va.ced Equipment Tsinghua UniversityBeijing 100084China

marine propellers a.e importa.t propulsion devices for both surfa.e ships a.d underwa.er *** severe environmenta. problems ha.e required further performance enha.cement for ***,tra.itiona. methods to improve propeller performances through geometrica. a.d structura. optimiza.ions ha.e been extensively investiga.ed,while the underlying mecha.isms of the effects of surfa.e a.d interfa.e properties on marine propellers a.e still fa. from being fully *** pa.er presented a.comprehensive review of recent a.va.ces in the effects of surfa.e a.d interfa.e properties,such a. surfa.e roughness a.d surfa.e wetta.ility,on marine propellers with a. empha.is on the significa.t improvements in both hydrodyna.ic a.d ca.ita.ion performances,hoping to a.ouse more in-depth investiga.ions in the field of surfa.e/interfa.e science a.d technologies on marine propellers,a.d a.so promote the sta.e-of-the-a.t technologies,such a. superlubricity technology,into pra.tica. a.plica.ions.

关键词： marine propellers hydrodyna.ics ca.ita.ion surfa.e roughness surfa.e wetta.ility

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