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Investiga.ion of mecha.ica. a.d electrica. cha.a.teristics of selfsensing pneuma.ic torsiona. a.tua.ors

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Science China.Technologica. Sciences) 2024年第1期67卷 130-142页

作者： XIa. Wei HU dean HU GuoLia.g XIa. YiHua Key La.ora.ory of Conveya.ce a.d Equipment Ministry of EducationEast China Jiaotong UniversityNanchang 330013China Key La.ora.ory of a.va.ced Design a.d Simula.ion Techniques for Specia. Equipment Ministry of EducationHunan UniversityChangsha 410082China

Soft pneuma.ic a.tua.ors a.e one of the most promising a.tua.ion for soft robots,a.d grea. a.hievements ha.e been *** it rema.ns cha.lenging to endow sensing ca.a.ilities to pneuma.ic a.tua.ors,especia.ly for the sensing a.ility origina.ing directly from the a.tua.or ***,a.self-sensing pneuma.ic torsiona. a.tua.or(SPTa.is designed ba.ed on the electroma.netic induction effect a.d ma.netica.ly responsive *** SPTa.ca. genera.e feedba.k volta.e a.d current with the deforma.ion,in which the sensing function comes from its inherent *** investiga.e the mecha.ica. a.d electrica. cha.a.teristics,a. experimenta. pla.form a.d a.finite element model a.e esta.lished,*** find tha. the torsion a.gle a.d output torque increa.e in nonlinea. with the a.tua.ing *** ma.imum torsion a.gle is 66.35°,which is 84.34%of tha. for the a.tua.or fa.rica.ed by pure *** ma.imum output torque(24.9 N mm)improves by 23.19%compa.ed with the a.tua.or ma.e by pure *** rega.ds the electrica. cha.a.teristics,the ma.imum feedba.k volta.e a.d current a.e 2.90μV a.d 29.50 na.when the SPTa.is a.tua.ed by a.pressure of−40 *** a.so demonstra.e tha. the rela.ionship between the torsion a.gle a.d the ma.netic flux cha.ge is a.proxima.ely ***,the number of turns of wires,ma.netic powders contents,a.d ma.netic direction on the feedba.k volta.e a.d current a.e *** show tha. the feedba.k volta.e a.d current ca. be enha.ced by increa.ing the number of turns a.d ma.netic powders *** envision tha. the SPTa.would be promising for soft robots to rea.ize their a.cura.y control a.d intelligentiza.ion.

关键词： pneuma.ic torsiona. a.tua.ors self-sensing feedba.k volta.e finite element modeling soft robots

Micropilla. compression using discrete disloca.ion dyna.ics a.d ma.hine lea.ning

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Theoretica. & a.plied Mecha.ics Letters 2024年第1期14卷 39-47页

作者： Jin Ta. dean Wei Junshi Yu Qia.hua.Ka. Guozheng Ka.g Xu Zha.g School of Mecha.ics a.d a.rospa.e Engineering Southwest Jiaotong UniversityChengdu 610031China Sta.e Key La.ora.ory of Nonlinea. Mecha.ics Institute of MechanicsChinese Academy of SciencesBeijing 100190China

Discrete disloca.ion dyna.ics(DDD)simula.ions revea. the evolution of disloca.ion structures a.d the intera.tion of *** study investiga.ed the compression beha.ior of single-crysta. copper micropilla.s using fewshot ma.hine lea.ning with da.a.provided by DDD *** types of fea.ures a.e considered:externa. fea.ures comprising specimen size a.d loa.ing orienta.ion a.d interna. fea.ures involving disloca.ion source length,Schmid fa.tor,the orienta.ion of the most ea.ily a.tiva.ed disloca.ions a.d their dista.ce from the free *** yielding stress a.d stress-stra.n curves of single-crysta. copper micropilla. a.e predicted well by incorpora.ing both externa. a.d interna. fea.ures of the sa.ple a. sepa.a.e or combined *** is found tha. the ma.hine lea.ning a.cura.y predictions for single-crysta. micropilla. compression ca. be improved by incorpora.ing ea.ily a.tiva.ed disloca.ion fea.ures with externa. ***,the effect of ea.ily a.tiva.ed disloca.ion on yielding is less importa.t compa.ed to the effects of specimen size a.d Schmid fa.tor which includes informa.ion of orienta.ion but becomes more evident in sma.l-sized ***,incorpora.ing interna. fea.ures,especia.ly the informa.ion of most ea.ily a.tiva.ed disloca.ions,improves predictive ca.a.ilities a.ross diverse sa.ple sizes a.d orienta.ions.

关键词： Discrete disloca.ion dyna.ics simula.ions Ma.hine lea.ning Size effects Orienta.ion effects Microstructura. fea.ures

Screening COVID-19 from chest X-ra. ima.es by a. optica. diffra.tive neura. network with the optimized F number

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Photonics Resea.ch 2024年第7期12卷 1410-1426页

作者： JIa.ONG Wa.G SHOUYU CHa. WENTING GU BOYI LI XUE JIa.G YUNXIa.G ZHa.G HONGEN LIa. XIN LIU dean TA a.a.emy for Engineering a.d Technology Fudan UniversityShanghai 200433China Center for Biomedica. Engineering Fudan UniversityShanghai 200433China Depa.tment of Chemistry Fudan UniversityShanghai 200433China Depa.tment of Biomedica. Engineering School of MedicineTsinghua UniversityBeijing 100084China

The COVID-19 pa.demic continues to significa.tly impa.t people's lives worldwide, empha.izing the critica. need for effective detection methods. Ma.y existing deep lea.ning-ba.ed a.proa.hes for COVID-19 detection offer high a.cura.y but dema.d substa.tia. computing resources, time, a.d energy. In this study, we introduce a. optica. diffra.tive neura. network(ODNN-COVID), which is cha.a.terized by low power consumption, efficient pa.a.leliza.ion, a.d fa.t computing speed for COVID-19 detection. In a.dition, we explore how the physica. pa.a.eters of ODNN-COVID a.fect its dia.nostic performa.ce. We identify the F number a. a.key pa.a.eter for eva.ua.ing the overa.l detection ca.a.ilities. Through a. a.sessment of the connectivity of the diffra.tive network, we esta.lished a. optimized ra.ge of F number, offering guida.ce for constructing optica. diffra.tive neura. networks. In the numerica. simula.ions, a.three-la.er system a.hieves a. impressive overa.l a.cura.y of 92.64% a.d 88.89% in bina.y-a.d threecla.sifica.ion dia.nostic ta.ks. For a.single-la.er system, the simula.ion a.cura.y of 84.17% a.d the experimenta. a.cura.y of 80.83% ca. be obta.ned with the sa.e configura.ion for the bina.y-cla.sifica.ion ta.k, a.d the simula.ion a.cura.y is 80.19% a.d the experimenta. a.cura.y is 74.44% for the three-cla.sifica.ion ta.k. Both simula.ions a.d experiments va.ida.e tha. the proposed optica. diffra.tive neura. network serves a. a.pa.sive optica. processor for effective COVID-19 dia.nosis, fea.uring low power consumption, high pa.a.leliza.ion, a.d fa.t computing ca.a.ilities. Furthermore, ODNN-COVID exhibits versa.ility, ma.ing it a.a.ta.le to va.ious ima.e a.a.ysis a.d object cla.sifica.ion ta.ks rela.ed to medica. fields owing to its genera. a.chitecture.

关键词： neura. network offering

Supplementa.ion of vita.in E or a.bota.ica. extra.t a. a.tioxida.ts to improve growth performa.ce a.d hea.th of growing pigs housed under thermoneutra. or hea.-stressed conditions

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Journa. of a.ima. Science a.d Biotechnology 2024年第3期15卷 1101-1118页

作者： Ysenia.V.Silva.Guillen Consuelo a.ella.o Jeffrey Wiegert R.dean Boyd Ga.riela.E.Ma.tinez Eric va. Heugten Depa.tment of a.ima. Science North Carolina State UniversityRaleighNC 27695USA Depa.tment of Sta.istics North Carolina State UniversityRaleighNC 27695USA Depa.tment of a.ima. Science Texas A&M UniversityCollege StationTX 77843USA a.ima. Nutrition Resea.ch LLCAlvatonKY 42122USA.

Ba.kground Hea. stress ha. severe nega.ive consequences on performa.ce a.d hea.th of pigs,lea.ing to significa.t economic *** objective of this study wa. to investiga.e the effects of supplementa. vita.in E a.d a.bota.ica. extra.t in feed or drinking wa.er on growth performa.ce,intestina. hea.th,a.d oxida.ive a.d immune sta.us in grow-ing pigs housed under hea. stress *** Duplica.e experiments were conducted,ea.h using 64 crossbred pigs with a. initia. body weight of 50.7±3.8 a.d 43.9±3.6 kg a.d a.e of 13-week a.d 12-week,***(n=128)were housed individua.ly a.d a.signed within weight blocks a.d sex to a.2×4 fa.toria. a.ra.gement consisting of 2 environments(thermo-neutra.(21.2℃)or hea.-stressed(30.9℃))a.d 4 supplementa.ion trea.ments(control diet;control+100 IU/L of D-α-tocopherol in wa.er;control+200 IU/kg of DL-α-tocopheryl-a.eta.e in feed;or control+400 mg/kg of a.bota.ica. extra.t in feed).Results Hea. stress for 28 d reduced(P≤0.001)fina. body weight,a.era.e da.ly ga.n,a.d a.era.e da.ly feed inta.e(-7.4 kg,-26.7%,a.d-25.4%,respectively)but no effects of supplementa.ion were detected(P>0.05).Serum vita.in E increa.ed(Pa.in E supplementa.ion in wa.er a.d in feed(1.64 vs.3.59 a.d 1.64 vs.3.24),but not for the bota.ica. extra.t(1.64 vs.1.67 mg/kg)a.d wa. grea.er when supplemented in wa.er ***(P=0.002).Liver vita.in E increa.ed(Pa.in E supplementa.ions in wa.er(3.9 vs.31.8)a.d feed(3.9 vs.18.0),but not with the bota.ica. extra.t(3.9 vs.4.9 mg/kg).Serum ma.ondia.dehyde wa. reduced with hea. stress on d 2,but increa.ed on d 28(intera.tion,Pa.d wa. grea.er(Pa.tioxida.t supplementa.ion compa.ed to *** prolifera.ion wa. reduced(P=0.037)in the jejunum under hea. stress,but increa.ed in the ileum when vita.in E wa. supplemented in feed a.d wa.er under hea. stress(intera.tion,P=0.04).Tumor necrosis fa.tor-αin jejunum a.d ileum mucosa.decrea.ed by hea. stress(Pa.d wa. re

关键词： Bota.ica. extra.t Growing pigs Hea. stress Immune sta.us Oxida.ive sta.us Tocopherol Wa.er

Experimenta. rea.iza.ion of fra.ta. fretwork meta.urfa.e for sound a.oma.ous modula.ion

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Chinese Physics B 2024年第5期33卷 473-478页

作者：何佳杰于书萌江雪他得安 Depa.tment of Biomedica. Engineering School of Information Science and TechnologyFudan UniversityShanghai 200433China a.a.emy for Engineering a.d Technology Fudan UniversityShanghai 200433China

Na.ura. crea.ures a.d a.cient cultures a.e full of potentia. sources to provide inspira.ion for a.plied *** by the fra.ta. geometry in na.ure a.d the fretwork fra.e in a.cient culture,here we design the a.oustic meta.urfa.e to rea.ize sound a.oma.ous modula.ion,which ma.ifests itself a. a. incident-dependent propa.a.ion beha.ior:sound wa.e propa.a.ing in the forwa.d direction is a.lowed to tra.smit with high efficiency while in the ba.kwa.d direction is obviously *** qua.tita.ively investiga.e the dependences of a.ymmetric tra.smission on the propa.a.ion direction,incident a.gle a.d opera.ing frequency by ca.cula.ing sound tra.smitta.ce a.d energy *** compa.t fra.ta. fretwork meta.urfa.e for a.oustic a.oma.ous modula.ion would promote the development of integra.ed a.oustic devices a.d expa.d versa.ile a.plica.ions in a.oustic communica.ion a.d informa.ion encryption.

关键词： a.oustic meta.urfa.e fra.ta. geometry sound a.oma.ous modula.ion

Highly oxygena.ed cleroda.e fura.oditerpenoids from the lea.es a.d twigs of Croton yunna.ensis

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Chinese Journa. of Na.ura. Medicines 2024年第10期22卷 945-954页

作者： Wa.G Didi MEI Fa.g NIE Jinchun LI Zhenwei ZHa.G Da.di GUO dean LI Wei School of Pha.ma.y Guizhou Medical University Zhongsha. Institute for Drug Discovery Shanghai Institute of Materia Medica Chinese Academy of Sciences

The phytochemica. investiga.ion of the lea.es a.d twigs of Croton yunna.ensis resulted in the isola.ion of eight new cleroda.e fura.oditerpenoids, na.ed croyunfura.oids a.H（1-8）, a.ong with three known a.a.ogs（9-11）. The structures of these compounds were elucida.ed using spectroscopic a.a.yses, a.d their a.solute configura.ions were determined through a.combina.ion of electronic circula. dichroism（ECD） ca.cula.ions a.d single-crysta. X-ra. diffra.tion. Nota.ly, Croyunfura.oid D（4） is identified a. a.ra.e 18,19-dinor-cleroda.e diterpenoid. a.ditiona.ly, the structure of a.previously reported diterpenoid, crotonyunna. B, wa. *** isola.ed compounds were eva.ua.ed for their inhibitory a.tivities on nitric oxide（NO） production in LPS-induced Ra. 264.7 ma.ropha.es. a.ong them, compounds 5 a.d 6 demonstra.ed significa.t inhibitory effects, with IC50va.ues of 20.33 ± 2.31 a.d 22.80 ±1.31 μmol·L-1, respectively.

关键词： Cleroda.e fura.oditerpenoid Croton yunna.ensis Euphorbia.ea. NO inhibitory a.tivity

The Protocol of Ultra.onic Ba.ksca.ter Mea.urements of Musculoskeleta. Properties

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Phenomics 2024年第1期4卷 72-80页

作者： Dongsheng Bi Lingwei Shi Boyi Li Ying Li Chengcheng Liu La.rence HLe Jingchun Luo Sijia.Wa.g dean Ta Center for Biomedica. Engineering School of InformationScience and TechnologyFudan University2005 SonghuRoadYangpu DistrictShanghai 200438China a.a.emy for Engineering a.d Technology Fudan UniversityShanghai 200433China Depa.tment of Ra.iology a.d Dia.nostic Ima.ing University of AlbertaEdmonton T6G2B7Canada Huma. Phenome Institute Fudan UniversityShanghai 201203China Sha.gha. Institute of Nutrition a.d Hea.th Chinese Academyof SciencesShanghai 200031China

This study a.ms to introduce the protocol for ultra.onic ba.ksca.ter mea.urements of musculoskeleta. properties ba.ed on a.novel ultra.onic ba.ksca.ter bone dia.nostic(UBBD)***-energy X-ra. a.sorptiometry(DXa.ca. be a.opted to mea.ure bone minera. density(BMD)in the hip,spine,legs a.d the whole *** muscle a.d fa. ma.s in the legs a.d the whole body ca. be a.so ca.cula.ed by DXa.body composition *** on the proposed protocol for ba.ksca.ter mea.urements by UBBD,ultra.onic ba.ksca.ter signa.s ca. be mea.ured in vivo,deriving three ba.ksca.ter pa.a.eters[a.pa.ent integra. ba.ksca.ter(a.B),ba.ksca.ter signa. pea. a.plitude(BSPa.a.d the corresponding a.riva. time(BSPT)].a.B ma. provide importa.t dia.nostic informa.ion a.out bone *** a.d BSPT ma. be importa.t indica.ors of muscle a.d fa. *** sta.da.dized ba.ksca.ter mea.urement protocol of the UBBD instrument ma. ha.e the potentia. to eva.ua.e musculoskeleta. cha.a.teristics,providing help for promoting the a.plica.ion of the ba.ksca.ter technique in the clinica. dia.nosis of musculoskeleta. disorders(MSDs),such a. osteoporosis a.d muscula. a.rophy.

关键词： Ultra.onic ba.ksca.ter Musculoskeleta. disorders Bone minera. density Muscle ma.s Fa. ma.s

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等离子气化技术处置固体废物的研究进展

化工环保 2024年第3期44卷 338-344页

作者：刁圳强朱实权苏晓娅秦林波韩军 Ma. dean 武汉科技大学资源与环境工程学院湖北武汉430081 湖北省工业安全工程技术研究中心湖北武汉430081 上海羿诚环保科技有限公司上海201403 广东邦普循环科技有限公司广东佛山528137

等离子气化技术是固体废物处理的前沿技术之一,能够实现固体废物的全部资源化,符合循环经济的发展理念。本文介绍了等离子气化技术的概念及工艺,综述了国外等离子气化技术处理固体废物的工业化现状,重点介绍了我国等离子气化技术在基础... 详细信息

等离子气化技术是固体废物处理的前沿技术之一,能够实现固体废物的全部资源化,符合循环经济的发展理念。本文介绍了等离子气化技术的概念及工艺,综述了国外等离子气化技术处理固体废物的工业化现状,重点介绍了我国等离子气化技术在基础研究、中试和工业化应用方面的研究进展,分析了我国等离子气化技术工业化进程中面临的主要问题,并展望了其发展趋势,指出:等离子气化技术是一种完全符合循环经济理念的固体废物处理技术,随着研究的深入和相关法规标准的完善,必将迎来广阔的发展前景。

关键词：固体废物等离子气化合成气玻化渣

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如何找回我们的创造力

中学生英语 2024年第2期 4-5页

作者： dean Rieck 景一(编译) 不详

研究表明,即使你并不比大多数人更聪明,在写作时你仍然有潜力运用惊人的创造力。但是,为什么少有人具有高度的创造力呢?因为人们长大后会养成一些坏习惯,它们阻碍了大脑中的创造性思维。而只要你愿意努力,它们是可以改掉的。

关键词：创造性思维创造力坏习惯养成