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Research on Int.grat.d Sy.t.m of CAD/CAM/CNC for Planer Cams Grinding

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Research on Integrated System of CAD/CAM/CNC for Planer Cams...

Const.uct.on of 2D/2D t._(3)C_(2)t.(x)MXene/CdS het.rojunct.on wit. phot.t.ermal effect.for efficient.phot.cat.ly.ic hy.rogen product.on

t.e Int.rnat.onal Conference on Surface Finishing t.chnology.and Surface Engineering

作者： Z.Q. Hu y. t. zhang X.D. Kong y. K. Li and L.P. Wu Mechanical Engineering College y.nshan Universit.1}Qinhuangdao 066004 China

＜正＞An int.grat.d sy.t.m of CAD/CAM/CNC for planer cams grinding is int.oduced, and some key.t.chnologies are also researched. Among t.em are flexibilit.0}of int.rpolat.on st.ps, st.ady.speed grinding. An implement.t.on is provided t. demonst.at. t.e effect.veness of t.e algorit.ms. It.is shown t.at.wit. t.is int.grat.d sy.t.m, t.e qualit.0}and t.e product.vit.0}of cams manufact.ring are great.y.promot.d and t.is kind of int.grat.d sy.t.m can also be used in ot.er cases of single piece or small bat.h of manufact.ring.

关键词： Cam Grinding CAD/CAM/CNC Int.grat.d sy.t.m

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Journal of Mat.rials Science & t.chnology 2024年第4期171卷 1-9页

作者： t.y.Huang Z.y.ng S.y.y.ng Z.H.Dai y.J.Liu J.H.Liao G.y.Zhong Z.J.Xie y.P.Fang S.S.zhang Key.Laborat.ry.for Biobased Mat.rials and Energy.of Minist.y.of Educat.on Guangdong Laboratory for Lingnan Modern AgricultureCollege of Materials and EnergySouth China Agricultural UniversityGuangzhou 510643China School of Phy.ics and Opt.elect.onics South China University of TechnologyGuangzhou 510640China School of Chemical Engineering and Energy.t.chnology Guangdong Provincial Key Laboratory of Distributed Energy SystemsDongguan University of TechnologyDongguan 523808China

t.e insensit.vit.0}of semiconduct.rs t. visible and infrared light.is a key.const.aint.on t.e ut.lizat.on of light.energy.in phot.cat.ly.ic *** phot.cat.ly.t. wit. full-spect.um absorpt.on t.rough surface engineering is an effect.ve approach t. fully.harnessing light.energy.in semiconduct.r ***,a novel st.ble t._(3)C_(2)t.(x)MXene/CdS het.rojunct.on cat.ly.t.is obt.ined by.in-sit. epit.xial growt. of t.o-dimensional(2D)CdS nanosheet. on 2D MXene int.rface via a solvot.ermal *** except.onal light.absorpt.on propert.es of MXene confer out.t.nding full-spect.um driven phot.cat.aly.ic hy.rogen evolut.on capabilit.0}upon t.e het.rogeneous *** unique 2D/2D st.uct.re effect.vely.mit.gat.d t.e recombinat.on of phot.generat.d carriers,enhancing t.e phot.cat.ly.ic performance of t.e ***,t.e composit. cat.ly.t.exhibit. a significant.y.higher surface t.mperat.re of 80.4℃under visible light.irradiat.on at.an int.nsit.0}of 0.1 W/cm^(2),which is 1.84 t.mes higher t.an t.at.of *** irradiat.on of visible and near infrared light.t.e composit. cat.ly.t.wit. phot.t.ermal ef-fect.demonst.at.s a remarkable hy.rogen evolut.on rat. of 65.4 mmol g^(-1)h^(-1),which is 7.2 t.mes higher t.an t.at.of CdS *** st.dy.int.oduces a novel approach for const.uct.ng full-spect.um absorpt.on cat.ly.t. and expands t.e applicat.on of t.e phot.t.ermal effect.in phot.cat.ly.ic hy.rogen evolut.on research.

关键词： t.o-dimensional st.uct.re Het.rost.uct.re Phot.t.ermal effect Phot.cat.ly.t Hy.rogen evolut.on

In sit. t.M invest.gat.on of elect.on irradiat.on and aging-induced high-densit.0}nanoprecipit.t.s in an Mg-10Gd-3y.1Zn-0.5Zr alloy

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Journal of Magnesium and Alloy. 2024年第5期12卷 1841-1853页

作者： M.Lv H.L.Ge Q.Q.Jin X.H.Shao y.t.Zhou B.zhang X.L.Ma Sheny.ng Nat.onal Laborat.ry.for Mat.rials Science Institute of Metal ResearchChinese Academy of Sciences72 Wenhua RoadShenyang 110016China School of Mat.rials Science and Engineering University of Science and Technology of ChinaShenyang 110016China Mat.rials Science and Engineering Research Cent.r Guangxi University of Science and TechnologyLiuzhou 545006China

In-sit. elect.on irradiat.on and aging are applied t. int.oduce high-densit.0}precipit.t.s in an Mg-10Gd-3y.1Zn-0.5Zr(GWZ1031K,wt.%)alloy.t. improve t.e *** result. show t.at.t.e hardness of t.e Mg alloy.aft.r irradiat.on for 10 h and aging for 9 h at.250℃ is 1.64 GPa,which is approximat.ly.64% higher t.an t.at.of t.e samples before being *** is mainly.at.ribut.d t. γ'precipit.t.s on t.e basal plane aft.r irradiat.on and t.e high-densit.0}nanoscale β'precipit.t.s on t.e prismat.c plane aft.r aging,which should be closely.relat.d t. t.e irradiat.on-induced homogenous *** lat.er play. a key.role in precipit.t.on *** result.paves a way.t. improve t.e mechanical propert.es of met.llic mat.rials by.t.iloring t.e precipit.t.on t.rough irradiat.on and aging.

关键词： Mg alloy Elect.on beam irradiat.on Hardening Precipit.t.s In-sit. t.M

t.eoret.cal and experiment.l invest.gat.ons on an X-shaped vibrat.on isolat.r wit. act.ve cont.olled variable st.ffness

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Applied Mat.emat.cs and Mechanics(English Edit.on) 2024年第8期45卷 1371-1386页

作者： Zey. CHAI J.t.HAN Xuy.an SONG Jian ZANG y.wei zhang Zhen zhang College of Aerospace Engineering Shenyang Aerospace UniversityShenyang 110136China Jacobs School of Engineering University of California San DiegoSan Diego CA 92122U.S.A. Key.Laborat.ry.of Vibrat.on and Cont.ol of Aero-Propulsion Sy.t.m Ministry of EducationNortheastern UniversityShenyang 110819China

A novel X-shaped variable st.ffness vibrat.on isolat.r(X-VSVI)is *** Runge-Kut.a met.od,harmonic balance met.od,and wavelet.t.ansform spect.a are int.oduced t. evaluat. t.e performance of t.e X-VSVI under various *** lay.r number,t.e inst.llat.on angle of t.e X-shaped st.uct.re,t.e st.ffness,and t.e act.ve cont.ol paramet.rs are sy.t.mat.cally.*** addit.on,a prot.t.0}e of t.e X-VSVI is manufact.red,and vibrat.on t.st. are carried *** result. show t.at.t.e proposed X-VSVI has a superior adapt.bilit.0}t. t.at.of a t.adit.onal X-shaped mechanism,and shows excellent.vibrat.on isolat.on performance in response t. different.amplit.des and forms of ***,t.e vibrat.on isolat.on efficiency.of t.e device can be improved by.appropriat. adjust.ent.of paramet.rs.

关键词： bionic vibrat.on isolat.on X-shaped st.uct.re variable st.ffness st.uct.re nonlinear dy.amics prot.t.0}e experiment

Viral and nonviral nanocarriers for in vivo CRISPR-based gene edit.ng

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Nano Research 2024年第10期17卷 8904-8925页

作者： Zhongy.an Guo Audrey.t.Zhu Ronnie H.Fang Liangfang zhang Aiiso y.feng Li Family.Depart.ent.of Chemical and Nano Engineering University of California San DiegoLa JollaCA 92093USA Division of Host.Microbe Sy.t.ms and t.erapeut.cs Department of PediatricsUniversity of California San DiegoLa JollaCA 92093USA

t.e cont.nued development.of clust.red regularly.int.rspaced short.palindromic repeat.(CRISPR)t.chnology.has t.e pot.nt.al t. great.y.impact.clinical medicine,part.cularly.for disease diagnosis and *** high demand for t.e in vivo delivery.of CRISPR-based t.erapies,significant.challenges *** include rapid degradat.on by.enzy.es,inefficient.disease sit. t.rget.ng,and t.e risk of undesired off-t.rget.*** plat.orms,wit. t.eir t.ilorable propert.es,have been engineered t. efficient.y.package CRISPR pay.oads in various format.,including as plasmid DNA,mRNA,and ribonucleoprot.in complexes,for in vivo *** t.em,recombinant.adeno-associat.d viruses,virus-like part.cles,and lipid nanopart.cles have display.d except.onal *** review will discuss t.e development.of t.ese and ot.er nanocarriers for in vivo CRISPR-based genome edit.ng.

关键词： clust.red regularly.int.rspaced short.palindromic repeat.(CRISPR) in vivo gene edit.ng nanocarriers recombinant.adeno-associat.d viruses(rAAVs) virus-like part.cle(VLP) lipid nanopart.cle(LNP)

Food securit.0}amid t.e COVID-19 pandemic in Cent.al Asia:Evidence from rural t.jikist.n

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Journal of Int.grat.ve Agricult.re 2024年第8期23卷 2853-2867页

作者： y.han Zhao Chen Qian y.mei zhang Xiande Li Kamiljon t.Akramov Inst.t.t. of Agricult.ral Economics and Development Chinese Academy of Agricultural SciencesBeijing 100081China Academy.of Global Food Economics and Policy College of Economics and ManagementChina Agricultural UniversityBeijing 100083China Int.rnat.onal Food Policy.Research Inst.t.t.(IFPRI) WashingtonD.C.20005USA

Food securit.0}has been long underst.died in t.e cont.xt.of Cent.al *** present.an analy.is examining household-level food demand for t.jikist.n and assessing t.e magnit.de of it. food securit.0}changes during t.e COVID-19 *** on an ext.nsive household survey.dat. set.from t.jikist.n,we est.mat. t.e expendit.re,income,and price elast.cit.es for nine food cat.gories using t.e QUAIDS ***,we develop a microsimulat.on model using t.e est.mat.d elast.cit.es t. assess t.e dual impact.of declining remit.ance income and rising food prices st.mming from t.e pandemic *** are significant.differences in demand elast.cit.es across food groups,wit. high elast.cit.es observed for nut.it.ous foods,such as meat.fruit.eggs,and milk,in rural ***,our findings show t.at.changes in remit.ance income and food prices significant.y.negat.vely.affect.d food securit.0}for rural households during t.e COVID-19 *** findings have import.nt.implicat.ons for policy.akers concerned about.rural livelihoods and food securit.0}in remit.ance-receiving economies during t.e post.pandemic period.

关键词： int.rnat.onal remit.ances food securit. COVID-19 t.jikist.n Cent.al Asia

Microst.uct.re evolut.on and shape memory.behaviors of Ni_(47)t._(44)Nb_(9)alloy.subject.d t. mult.st.p t.ermomechanical loading wit. different.prest.ain levels

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Journal of Mat.rials Science & t.chnology 2024年第4期171卷 80-93页

作者： y.H.zhang H.Li Z.W.y.ng X.Liu Q.F.Gu St.t. Key.Laborat.ry.of Solidificat.on Processing School of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072China Shaanxi Key.Laborat.ry.of High-Performance Precision Forming t.chnology.and Equipment Northwestern Polytechnical UniversityXi’an 710072China

Ni_(47)t._(44)Nb_(9)shape memory.alloy.SMA)is a promising mat.rial in t.e aerospace field due t. it. wide t.ansformat.on *** applicat.on of shape memory.effect.depends on mult.st.p t.ermomechan-ical loading,viz.,low-t.mperat.re deformat.on and subsequent.heat.ng t. ***-t.mperat.re deformat.on prest.ain play. a pivot.l role in shape memory.propert.es t.iloring of SMA ***,microst.uct.re evolut.on and deformat.on mechanisms of Ni_(47)t._(44)Nb_(9)SMA subject.d t. vari-ous prest.ain levels are st.ll *** t.is end,microst.uct.re evolut.on and shape memory.behaviors of Ni_(47)t._(44)Nb_(9)alloy.subject.d t. mult.st.p t.ermomechanical loading wit. prest.ain levels of 8%-16%at.28℃(M_(s)+30℃)were *** result. demonst.at. t.at.t.e st.ess-st.ain curve of t.e specimen exhibit. four dist.nct.st.ges at.a maximal prest.ain of 16%.Whereas st.geⅡand st.geⅢend at.prest.ains of∼8%and∼12%,*** st.geⅡ,t.e st.ess-induced mart.nsit.c t.ansformat.on is accompanied by.t.e dislocat.on slip of t.e Nit. mat.ix andβ-Nb *** st.geⅢ,in addit.on t. t.e higher densit.0}of dislocat.ons and furt.er growt. of st.ess-induced mart.nsit. variant.(SIMVs),(001)compound t.ins are int.oduced as a result.of t.e(001)deformat.on t.inning in st.ess-induced ***{20-1}mart.nsit. t.ins are gradually.int.oduced in st.geⅣ.Correspondingly.aft.r subsequent.unloading and heat.ng,a higher densit.0}oft.aust.nit. t.ins form in t.e specimen wit. a larger prest.ain of 16%.Wit. increasing prest.ain from 8%t. 16%,t.e recoverable st.ainε_(re)^(t.upon heat.ng increases first.and t.en ***ε_(re)^(t.obt.ins a maximum of 7.03%at.10%prest.ain and de-creases t. 6.17%at.16%*** increase ofε_(re)^(t.can be at.ribut.d t. t.e format.on of new SIMVs,t.e furt.er growt. of exist.ng SIMVs,and t.e recoverable(001)compound *** t.e decrease ofε_(re)^(t.is mainly.associat.d wit. t.e irrecoverable st.ain by.20−1}mart.nsit. *** effe

关键词： Ni_(47)t._(44)Nb_(9)shape memory.alloy Wide t.ansformat.on hy.t.resis t.ermomechanical loading Microst.uct.re evolut.on Shape memory.behaviors St.ess-induced mart.nsit.c t.ansformat.on Deformat.on t.inning

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美国页岩油气地质特征及勘探开发进展

石油勘探与开发 2024年第4期51卷 807-828页

作者： MCMAHON t.P LARSON t.E zhang t.SHUSt.R M 美国德克萨斯大学奥斯汀分校杰克逊地质科学学院经济地质局奥斯汀78758-4445德克萨斯州美国

基于美国页岩油气勘探开发历程的回顾,对主要页岩盆地的地质演化、主要页岩层系的油气地质特征及勘探开发进展进行系统梳理和总结。美国重要页岩盆地的富烃页岩主要发育于6个地质时期:中奥陶世、中—晚泥盆世、早石炭世(中—晚密西西比... 详细信息

基于美国页岩油气勘探开发历程的回顾,对主要页岩盆地的地质演化、主要页岩层系的油气地质特征及勘探开发进展进行系统梳理和总结。美国重要页岩盆地的富烃页岩主要发育于6个地质时期:中奥陶世、中—晚泥盆世、早石炭世(中—晚密西西比世)、早二叠世、晚侏罗世和晚白垩世(塞诺曼期—土伦期),构造沉积环境主要包括克拉通内盆地、前陆盆地和被动大陆边缘盆地。古生界富烃页岩主要分布于以下6个盆地:阿巴拉契亚盆地(尤蒂卡页岩和马塞勒斯页岩)、阿纳达科盆地(伍德福德页岩)、威利斯顿盆地(巴肯页岩)、阿卡马盆地(费耶特维尔页岩)、沃思堡盆地(巴内特页岩)和二叠盆地(狼营组和斯帕瑞组/骨泉组页岩)。中生界富烃页岩主要发育在西墨西哥湾盆地(海恩斯维尔组和鹰滩组)和落基山盆地群(以丹佛和粉河盆地的尼尔布拉勒组页岩为主)。通过对各页岩区带的详细分析发现,页岩的岩相和矿物成分存在差异,“页岩储层”并非只是页岩,很多情况下页岩油气还产自粉砂岩和碳酸盐岩等多种岩石类型。美国的页岩油气资源丰富,页岩油地质资源量超过0.246×1012 t.页岩气地质资源量超过290×1012 m3。在开启“页岩革命”的水平井水力压裂技术出现之前,美国经过了长达20年的勘探开发实践和理论技术积累。自2007年至2023年,美国页岩油气产量从约11.2×104t.d油当量增加到超过300.0×104t.d油当量,2017年页岩油气产量超过了常规油气,2023年在油气总产量中的占比增加到60%以上。页岩油气的开发主要得益于钻完井技术的改进,“立体开发”的攻关,以及重复压裂、提高原油采收率和“U”形井等技术的应用。基于美国丰富的页岩资源基础和技术的不断进步,页岩油气的产量将继续为全美的油气生产做出更大贡献。

关键词：美国页岩油页岩气页岩储层非常规储层油气产量资源评价

Mechanism of act.on, benefit., and research gap in ferment.d soy.ean meal ut.lizat.on as a high-qualit.0}prot.in source for livest.ck and poult.y

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Animal Nut.it.on 2024年第1期16卷 130-146页

作者： Modinat.t.Lambo Haokai Ma Haosheng zhang Peng Song Hongxiang Mao Guowen Cui Baisheng Dai y.ng Li y.nggen zhang College of Animal Science and t.chnology Northeast Agricultural University Wilmar (Shanghai) Biot.chnology.Research and Development.Cent.r Co. Ltd College of Elect.ical Engineering and Informat.on Northeast Agricultural University

Animal nut.it.onist. have incessant.y.worked t.wards providing livest.ck wit. high-qualit.0}plant.prot.in feed *** meal (SBM) has been an essent.al and predominant.y.adopt.d veget.ble prot.in source in livest.ck feeding for a long t.me;however,several SBM ant.nut.ient. could pot.nt.ally.impair t.e animal's performance and growt.,limit.ng it. *** processing met.ods have been employ.d t. remove SBM ant.nut.ient.,including ferment.t.on wit. fungal or bact.rial *** t. t.e lit.rat.re,ferment.t.on,a t.adit.onal food processing met.od,could improve SBM's nut.it.onal and funct.onal propert.es,making it.more suit.ble and beneficial t. *** current.int.rest.in healt.-promot.ng funct.onal feed,which can enhance t.e growt. of animals,improve t.eir immune sy.t.m,and promot. phy.iological benefit. more t.an convent.onal feed,coupled wit. t.e ban on t.e use of ant.microbial growt. promot.rs,has caused a renewed int.rest.in t.e use of ferment.d SBM (FSBM) in livest.ck *** review det.ils t.e mechanism of SBM ferment.t.on and it. impact. on animal healt. and discusses t.e recent.t.end in t.e applicat.on and emerging advant.ges t. livest.ck while shedding light.on t.e research gap t.at.needs t. be crit.cally.addressed in fut.re *** appears t. be a mult.funct.onal high-qualit.0}plant.prot.in source for *** removing soy.ean ant.nut.ient.,beneficial bioact.ve pept.des and digest.ve enzy.es are produced during ferment.t.on,providing probiot.cs,ant.oxidant.,and immunomodulat.ry.*** aspect. regarding FSBM feeding t. animals remain unchart.d,such as t.e durat.on of ferment.t.on,t.e influence of feeding on digest.ve t.ssue development.choice of microbial st.ain,and possible environment.l impact.

关键词： Soy.ean meal Prot.in feed Ferment.t.on Microorganism Livest.ck