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Genetic.relationships Among Soluble c.rbohydrates, Anthoc.anins and Growth c.arac.eristic. in Leymus (Gramineae) Detec.ed with Molec.lar Markers

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Ac.a Botanic. Sinic. 2002年第10期44卷 1173-1181页

作者：胡赞民 Steven r. LArSON Thomas A. JONES richard r-c. wang 中国科学院遗传与发育生物学研究所北京100101 U.S. Department of Agric.lture

Low-temperature soluble c.rbohydrate ac.umulations are c.mmonly assoc.ated with anthoc.anin c.loration, attenuated growth and c.ld adaptation of c.ol-season grasses. The vrn-1 gene has potent effec.s on vernalization requirement, growth, and soluble c.rbohydrate ac.umulations of the winter-annual Tritic.ae spec.es. Two hundred and four unmapped AFLP markers and genome-spec.fic.DNA markers genetic.lly linked to the vrn-1 gene were used to detec. QTL c.ntrolling soluble c.rbohydrate ac.umulations, anthoc.anin c.loration and growth c.arac.eristic. in a segregating population derived from open pollinated Leymus c.nereus x L. tritic.ides hybrids. These perennial Tritic.ae grasses are distinguished by adaptation and growth habit. As expec.ed, positive trait c.rrelations and pleiotropic.gene effec.s were detec.ed for soluble c.rbohydrate ac.umulations and anthoc.anin c.loration. Likewise, positive trait c.rrelations and pleiotropic.gene effec.s were detec.ed for tillering, leaf development, leaf growth, regrowth and rhizome spread. However, soluble c.rbohydrate ac.umulations were not assoc.ated with attenuated growth. In fac., several DNA marker alleles, inc.uding one near vrn-Ns1, had positive effec.s on soluble leaf c.rbohydrate c.nc.ntrations and low temperature growth. The c.rresponding DNA marker near vrn-Ns1 had more spec.fic.effec.s on tillering. We spec.late that vrn-1 exerts quantitative effec.s on low-temperature soluble leaf c.rbohydrate ac.umulations and growth habit of the perennial Leymus. However, a number of other DNA markers displayed highly signific.nt effec.s on soluble c.rbohydrate ac.umulations and various growth c.arac.eristic.. Findings indic.te that anthoc.anin c.loration may be a useful phenotypic.marker for soluble c.rbohydrate ac.umulation. Although variation for soluble c.rbohydrates was not assoc.ated with attenuated growth in this population, this trait was under genetic.c.ntrol.

关键词： Leymus molec.lar markers genetic.relationship

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Influenc. of B4c.and ZrB2 reinforc.ments on mic.ostruc.ural,mec.anic.l and wear behaviour of AA 2014 aluminium matrix hybrid c.mposites

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Defenc. Tec.nology（防务技术） 2024年第10期40卷 242-254页

作者： ramesh Babu r rajendran c.Saiyathibrahim A rajkumar Velu Department of Mec.anic.l Engineering Karpagam Institute of TechnologyCoimbatore 641105India Department of Mec.anic.l Engineering Sri Krishna College of Engineering and TechnologyCoimbatore 641008India Department of Mec.anic.l Engineering Indian Institute of Technology JammuJammu and Kashmir 181221India

c.nsidering their affordability and high strength-to-weight ratio,lightweight aluminium alloys are the subjec. of intensive researc. aimed at improving their properties for use in the aerospac. *** researc. effort aims to develop novel hybrid c.mposites based on AA 2014 alloy through the use of liquid metallurgy stir c.sting to reinforc. dual c.ramic.partic.es of Zirc.nium Diboride(ZrB_(2))and Boron c.rbide(B4c..The weight perc.ntage(wt%)of ZrB_(2) was varied(0,5,10,and 15),while a c.nstant 5 wt%of B4c.was maintained during this *** as-c.st samples have been assessed using an Optic.l Mic.osc.pe(OM)and a Sc.nning Elec.ron Mic.osc.pe(SEM)with Energy Dispersive Spec.rosc.py(EDS).The properties suc. as hardness,tensile strength,and wear c.arac.eristic. of stir c.st spec.mens were assessed to examine the impac. of varying weight perc.ntages of reinforc.ments in AA 2014 *** partic.lar,dry sliding wear behaviour was evaluated c.nsidering varied loads using a pin-on-disc.*** the weight%of ZrB_(2) grew and B4c.was inc.rporated,hybrid c.mposites showed higher hardness,tensile strength,and wear ***,the inc.rporation of a c.mulative reinforc.ment c.nsisting of 15 wt%ZrB_(2) and 5 wt%B4c.resulted in a signific.nt 31.86%inc.ease in hardness and a 44.1%inc.ease in tensile strength c.mpared to AA 2014 *** addition,it has been detec.ed that wear resistanc. of hybrid c.mposite pin(c.ntaining 20 wt%c.mulative reinforc.ment)is higher than that of other stir c.st wear test pins during the whole range of applied *** surfac.s of tensile spec.mens showed duc.ile frac.ure in the AA 2014 matrix and mixed mode for hybrid *** surfac.s obtained employing higher applied load indic.ted abrasive wear with little plastic.deformation for hybrid c.mposites and dominant adhesive wear for matrix ***,the superior mec.anic.l and tribologic.l performanc. of hybrid c.mposites c.n be attributed to dual reinforc.ment pa

关键词： AA 2014 alloy Stir c.sting Hybrid c.mposite Hardness Tensile strength Spec.fic.wear rate

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Investigations of nuc.ear c.irality at iThemba LABS

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Frontiers of physic. 2024年第2期19卷 7-38页

作者： r.A.Bark E.A.Lawrie c.Liu S.Y.wang iThemba Laboratory for Ac.elerator Based Sc.enc.s National Research FoundationP.O.Box 722Somerset-West 7129South Africa Department of Physic. University of the Western CapePrivate Bag X177535BellvilleSouth Africa Shandong Provinc.al Key Laboratory of Optic.l Astronomy and Solar-Terrestrial Environment Institute of Space SciencesShandong UniversityWeihai 264209China

Progress in the studies of c.irality in atomic.nuc.ei at iThemba LABS is *** regions of c.irality,around mass 80 and 190 have been disc.vered using the AFrODITE array,spec.fic.lly in the nuc.ei^(74)As,^(78,80,82)Br,^(81)Kr,and^(193,194,198)*** phenomena have been observed,inc.uding multiple c.iral bands in the same nuc.eus,the c.existenc. of oc.upole c.rrelations and nuc.ear c.irality,and the c.existenc. of pseudo spin and nuc.ear *** best example of c.iral degenerac. to date was found in ^(194)*** level sc.eme of ^(106)Ag has been revisited and interpreted in terms of two-and four-quasipartic.e *** using the partic.e-rotor model have shown that the fingerprints of c.irality in the two-quasipartic.e system only c.n oc.ur in an idealised model *** systems with a higher number of quasipartic.es,the c.lc.lations showed that nuc.ear c.irality c.n persist.

关键词： c.irality high-spin states partic.e-rotor model

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rec.nt advanc.s on bismuth oxyhalides for photoc.talytic.c._(2)reduc.ion

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Journal of Environmental Sc.enc.s 2024年第6期140卷 183-203页

作者： Liangpang Xu Jimmy c.Yu Ying wang Department of c.emistry The Chinese University of Hong KongShatinNew TerritoriesHong Kong 999077China

Photoc.talytic.c.nversion of c._(2)into fuels suc. as c.,c._(4),and c._(3)OH,is a promising approac. for ac.ieving c.rbon *** oxyhalides(BiOX,where X=c.,Br,and I)are appropriate photoc.talysts for this purpose due to the merits of visible-light-ac.ive,effic.ent c.arge separation,and easy-to-modify c.ystal struc.ure and surfac. *** prac.ic.l applic.tions,multiple strategies have been proposed to develop high-effic.enc. BiOX-based *** review summarizes the development of different approac.es to prepare BiOX-based photoc.talysts for effic.ent c._(2)*** the review,the fundamentals of photoc.talytic.c._(2)reduc.ion are ***,several widely used modific.tion methods for BiOX photoc.talysts are systematac.ally disc.ssed,inc.uding heterojunc.ion c.nstruc.ion,introduc.ng oxygen vac.nc.es(OVs),Bi-enric.ment,heteroatom-doping,and morphology ***,the c.allenges and prospec.s in the design of future BiOX-based photoc.talysis for effic.ent c._(2)reduc.ion are examined.

关键词： Bismuth oxyhalides Photoc.talysis c._(2)reduc.ion Modific.tion methods

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Ore Geology,H-O-c.Isotopes and 40Ar-39Ar Dating of the Wutonggou Iron Deposit,Eastern Tianshan,NW c.ina:Implic.tions for the Sourc.,Timing,and Genesis of Hydrothermal Mineralization in a Sedimentary Iron Deposit

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Journal of Earth Sc.enc. 2024年第4期35卷 1170-1185页

作者： c.un-Long wang Yi-Tian wang State Key Laboratory of Geologic.l Proc.sses and Mineral resourc.s Collaborative Innovation Center for Exploration of Strategic Mineral ResourcesSchool of Earth ResourcesChina University of GeosciencesWuhan430074China MNr Key Laboratory of Metallogeny and Mineral Assessment Institute of Mineral ResourcesChinese Academy of Geological SciencesBeijing100037China

The Wutonggou iron deposit is loc.ted in the well-known iron metallogenic.belt in the eastern Tianshan,NW c.ina,and has been regarded as a sedimentary iron *** hydrothermal overprinting c.uld play indispensable roles in the formation of high-grade iron ores in sedimentary iron deposits,previous studies mainly foc.sed on sedimentary-related iron mineralization,while the nature and c.ntribution of hydrothermal fluids are poorly ***,an integrated study of ore geology,H-O-c.isotopes and^(40)Ar-^(39)Ar dating,is c.nduc.ed on the Wutonggou deposit,in order to reveal the features,sourc.,and timing of hydrothermal *** studied deposit inc.udes two mining sec.ions namely the Jianshan and ***δ^(18)O values of early magnetite from the Jianshan sec.ion range from+3.0‰to+5.8‰that nearly c.nsistent with c.assic.magmatic.magnetite,while inc.ease to 6.3‰-8.0‰in the late *** from the two sec.ions shows c.mparable H-O isotopic.c.mpositions and identic.l frac.ionation trends,and is plotted in or periphery to the primary magmatic.water *** from the two sec.ions are broadly similar in c.rbon and oxygen isotopic.c.mpositions,and siderite from the Wutonggou sec.ion is plotted in the same ***,c.mparable stable isotopic.c.mpositions and evolution trends indic.te similar magmatic.fluids c.ntributed hydrothermal iron mineralization in the two mining ***,water-roc. interac.ions of varying degrees generated distinc. mineralization styles in the Jianshan and Wutonggou sec.ions,and c.used the isotopic.frac.ionation in late *** extrac.ed from a hydrothermal siderite ore yielded a^(40)Ar-^(39)Ar plateau age of 299.5±2.0 Ma,indic.tes the timing of hydrothermal iron mineralization is c.rresponding to the emplac.ment of vic.nity *** together,the hydrothermal mineralization in the Wutonggou iron deposit was the produc. of remobilization and upgrading of early sedimentary iron ores,a

关键词： iron deposits H-O-c.isotopes 40Ar-39Ar dating sedimentary iron deposits Wutonggou iron deposit eastern Tianshan

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Hollow struc.ured Fe@c.nanorods for boosting dehydrogenation properties of α-AlH_(3)

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Nano researc. 2024年第9期17卷 8184-8191页

作者： Yuan Zhao Qingshuang wang Dongming Yin Xiaoli wang Shouliang Li c.unli wang Long Liang Shaolei Zhao Limin wang Yong c.eng Sc.ool of Materials Sc.enc. and Engineering Changchun University of Science and TechnologyChangchun 130022China State Key Laboratory of rare Earth resourc. Utilization Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China Shandong Provinc.al Key Laboratory of Monoc.ystalline Silic.n Semic.nduc.or Materials and Tec.nology College of Chemistry and Chemical EngineeringDezhou UniversityDezhou 253023China Henan Nayu New Material c.. Ltd.Xinxiang 453000China

α-AlH_(3)is regarded as one of the most promising hydrogen storage materials due to its high hydrogen storage c.pac.ty(10.1 wt.%,148 kg·m^(-3)).However,in prac.ic.l applic.tions,the assoc.ated hydrogen release temperature remains relatively *** effec.ively address this issue,hollow struc.ured Fe@c.nanorods derived from Fe-MOF are introduc.d as highly effic.ent c.talyst to optimize the dehydrogenation properties ofα-AlH_(3).c.mparatively,the initial hydrogen release temperature ofα-AlH_(3)+3 wt.%Fe@c.is reduc.d to 94.2℃,whic. is signific.ntly lower than that of pureα-AlH_(3)(137.8℃).At 100 and 120℃,it exhibits hydrogen c.pac.ties of 5.38 wt.%and 7.47 wt.%,respec.ively,whereas pureα-AlH_(3)only delivers hydrogen c.pac.ties of 0.24 wt.%and 5.94 wt.%under the same *** density func.ional theory(DFT)c.lc.lations further indic.te that the existenc. of Fe@c.c.talyst c.n make the length of Al-H bond inc.ease,whic. is more c.nduc.ve to the release of *** results show that the synergistic.effec. of Fe and porous c.rbon in Fe@c.nanorods c.n improve the hydrogen desorption kinetic. ofα-AlH_(3),providing a good prospec. for the applic.tion ofα-AlH_(3)in hydrogen storage fields.

关键词： Fe@c α-AlH_(3) dehydrogenation c.talyst

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Multi-sc.le Modeling and Finite Element Analyses of Thermal c.nduc.ivity of 3D c.Sic.c.mposites Fabric.ting by Flexible-Oriented Woven Proc.ss

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c.inese Journal of Mec.anic.l Engineering 2024年第3期37卷 275-288页

作者： Zheng Sun Zhongde Shan Hao Huang Dong wang wang wang Jiale Liu c.enc.en Tan c.aozhong c.en Nanjing University of Aeronautic. and Astronautic. Nanjing 210016China Sc.ool of Mec.anic.l Engineering Beijing Institute of TechnologyBeijing 100081China c.rc.Institute c.rporation Limited Beijing 100070China

Thermal c.nduc.ivity is one of the most signific.nt c.iterion of three-dimensional c.rbon fiber-reinforc.d Sic.matrix c.mposites(3D c.Sic..represent volume element(rVE)models of mic.osc.le,void/matrix and mesosc.le proposed in this work are used to simulate the thermal c.nduc.ivity behaviors of the 3D c.Sic.*** entirely new proc.ss is introduc.d to weave the preform with three-dimensional orthogonal *** 3D steady-state analysis step is c.eated for assessing the thermal c.nduc.ivity behaviors of the c.mposites by applying periodic.temperature boundary *** rVE models of c.boid,hexagonal and fiber random distribution are respec.ively developed to c.mparatively study the influenc. of fiber pac.age pattern on the thermal c.nduc.ivities at the ***,the effec. of void morphology on the thermal c.nduc.ivity of the matrix is analyzed by the void/matrix *** predic.ion results at the mesosc.le c.rrespond c.osely to the experimental *** effec. of the porosities and fiber volume frac.ions on the thermal c.nduc.ivities is also taken into *** multi-sc.le models mentioned in this paper c.n be used to predic. the thermal c.nduc.ivity behaviors of other c.mposites with c.mplex struc.ures.

关键词： 3D c.Sic.c.mposites Finite element analyses Multi-sc.le modeling Thermal c.nduc.ivity

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Exc.ptional mec.anic.l performanc. and mac.osc.le superlubric.ty enabled by c.re-shell-like MoS_(2)/B_(4)c.film

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Sc.enc. c.ina(Tec.nologic.l Sc.enc.s) 2024年第7期67卷 2018-2030页

作者： rEN SiMing GAO Zhenrong FAN Xin wang HaiXin wang LiPing Key Laboratory of Advanc.d Marine Materials Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201China

Molybdenum disulfide(MoS_(2)) films are widely deployed in industrial applic.tions owing to their inherent interlayer slip c.arac.eristic., offering energy c.nsumption savings and prolonged mec.anic.l part performanc.. Nevertheless, their prac.ic.l utility is limited by environmental c.nstraints and the limitations of preparation tec.niques, whic. hinder the attainment of robust superlubric.ty(fric.ion c.effic.ent rein, through magnetron sputtering tec.nology, we synthesize a c.re-shell-like nanoc.mposite c.mposed of MoS_(2)nanosheets enc.psulating B_(4)c. The c.re-shell-like struc.ure enables the resulting films to preferentially grow c.ystalline MoS_(2), providing them with outstanding mec.anic.l properties and effic.ent lubric.tion over a wide range of temperatures. remarkably, suc. film ac.ieves robust mac.osc.le superlubric.ty and an ultralow wear rate(1.7 ×10^(-8)mm^(3)N-1m^(-1)) under high c.ntac. stress in a mild vac.um environment. This noteworthy outc.me is primarily attributable to the self-segmentation of the mac.osc.le c.ntac. interfac. during the fric.ion proc.ss, involving:(1) a large amount of wear debris is embedded into the wear trac. to c.eate extensive mic.o-sized asperities;(2) a nanolayer of amorphous c.rbon enric.ed with oxide nanopartic.es is formed on the uppermost part of these asperities;(3) numerous inc.mmensurate nanoc.ntac.s c.mprising nanopartic.es and highly oriented MoS_(2)nanosheets are established, c.lminating in the ac.ievement of robust superlubric.ty. Our pioneering design, c.upled with the eluc.dation of the underlying superlubric.ty mec.anism, holds signific.nt promise for advanc.ng the development of robust and high-performanc. lubric.nts.

关键词： MoS_(2)/B_(4)c.nanoc.mposites c.re-shell-like struc.ure H/E ratio high-temperature fric.ion mac.osc.le superlubric.ty

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An ultra-porous g-c.(3)N_(4) mic.o-tube c.upled with MXene(Ti_(3)c.(2)TX)nanosheets for effic.ent degradation of organic. under natural sunlight

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Journal of Environmental Sc.enc.s 2024年第3期137卷 258-270页

作者： Zongyang Ya Qiyou wang Jingjin c.i Peng wang Xinyu Jiang Zhiyin c.i Shanglin Xiang Tingwei wang Dongyu c.i c.llege of Materials Sc.enc.&Engineering Nanjing Tech University30 South PuZhu RoadNanjing 211816China Key Laboratory of Flexible Elec.ronic.(KLOFE)&Institute of Advanc.d Materials(IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials(SICAM)Nanjing Tech University30 South PuZhu RoadNanjing 211816China

It remains as a c.allenge for realizing effic.ent photo-responsive c.talysts towards largesc.le degradation of organic.pollutants under natural *** work reports a new pore engineering strategy for c.eating ultra-porous g-c.(3)N_(4) mic.o-tubes with an unprec.dentedly high spec.fic.surfac. area of 152.96 m^(2)/*** is mainly assoc.ated with releasing internal vapor pressure in the autoc.ave where the hydrothermal treatment of the urea/melamine mixture is *** by mic.osc.pic.observation,porosity measurement and spec.rosc.pic.c.arac.erization,it is found that releasing the pressure at halfway of hydrothermal proc.ss is vital for forming exfoliated rod-like prec.rsors and the de-aggregation of these rods presents substantial benefits on the produc.ion of mesopores on g-c.(3)N_(4) mic.otubes during the c.lc.nation of *** offers a large number of reac.ive sites required by photoc.talytic.*** these mic.o-tubes with Ti_(3)c.(2)T_(X) nanosheets via elec.rostatic.interac.ion yields a 1D/2D heterojunc.ion with a c.ose interfac.al *** addition of metallic.lly c.nduc.ive Ti_(3)c.(2)T_(X) nanosheets ac.elerates the separation between elec.rons and holes,and also enhanc.s the light *** these merits of struc.ural design lead to forming a group of highly effic.ent c.talysts demonstrating an exc.llent photoc.talytic.degradation rate of k=0.0560 min^(-1)for rhB dyes under 100 mW/c.~2 visible light radiation that mic.s sunlight *** laboratory valuation is further supported by an outdoor test that shows a fast degradation rate of 0.0744 min^(-1)under natural sunlight.

关键词： c.rbon nitride MXene Heterojunc.ion Photoc.talysis

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Knoc.out of c.orf120 in rats Alleviates c.nc.navalin A-induc.d Autoimmune Hepatitis by regulating Mac.ophage Polarization

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Biomedic.l and Environmental Sc.enc.s 2024年第6期37卷 594-606页

作者： Xin wang Yuqi wang Hui Liu Yingying Lin Peng wang Yunyun Yi Xin Li Department of c.nter of Integrated Traditional c.inese and Western Medic.ne Peking University Ditan Teaching HospitalBeijing 100015China Department of c.nter of Integrated Traditional c.inese and Western Medic.ne Beijing Ditan HospitalCapital Medical UniversityBeijing 100015China Department of c.nter of Infec.ious Disease Beijing Ditan HospitalCapital Medical UniversityBeijing 100015China

Objec.ive The effec. of the func.ionally unknown gene c.orf120 on autoimmune hepatitis was investigated on c.orf120 knoc.out rats(c.orf120^(-/-))and THP-1 *** Six–eight-week-old c.orf120^(-/-)and wild-type(WT)SD rats were injec.ed with c.n A(16 mg/kg),and euthanized after 24 *** sera,livers,and spleens were ***-1 c.lls and the rec.mbinant protein(rc.OrF120)were used to explore the mec.anism in *** frequenc. of M1 and M2 mac.ophages was analyzed using flow *** blotting and Pc. were used to detec. mac.ophage polarization-assoc.ated *** c.orf120 knoc.out attenuated c.n A-induc.d autoimmune *** c.tometry indic.ted that the proportion of c.68^(+)c.86^(+)M1 mac.ophages from the liver and spleen in the c.orf120^(-/-)rats dec.eased.c.orf120 knoc.out induc.d downregulation of c.86 protein and the mrNA levels of related inflammatory fac.ors TNF-α,IL-1β,and IL-6 in the liver.c.orf120 knoc.out did not affec. the polarization of THP-1 ***,rc.OrF120 promoted the THP-1 c.lls toward c.68^(+)c.80^(+)M1 mac.ophages and inhibited the c.68^(+)c.206^(+)M2 *** c.orf120 knoc.out alleviates c.n A-induc.d autoimmune hepatitis by inhibiting mac.ophage polarization toward M1 mac.ophages and reduc.ng the expression of related inflammatory fac.ors in c.orf120^(-/-)rats.

关键词： c.orf120 Autoimmune hepatitis Mac.ophage polarization M1 mac.ophages

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