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Polydopamine wrapped polyaniline nanosh.ets: Synth.sis and anticorrosion application for waterborne epoxy coatings

JOURNAL OF MATERIALS SCIENCE & TECh.OLOGY 2024年第000期176卷 155-166页

作者： h., X. P. z.0}ng, Y. h. Liu, C. B. cui, h. z. Sh.ndong Univ Sci & Tech.ol Sch Mat Sci & Engn Qingdao 266590 Peoples R China Ocean Univ Ch.na Sch Mat Sci & Engn Qingdao 266100 Peoples R China

Two-dimensional materials h.ve been proved to be effective in improving th. performance of anticorrosive coatings. h.wever, most of th. reported two-dimensional materials only h.ve th. ability to passively block corrosive media and cannot effectively inh.bit localiz.d corrosion reactions at th. metal/coating interface. h.rein, we first synth.siz.d a novel polyaniline (PANI) nanosh.et with.both.barrier and passivation functions for metals. In addition, polydopamine (PDA) wrapped PANI nanosh.ets (PANI@PDA) were obtained by in situ self-polymeriz.tion reaction of dopamine on th. PANI surface, wh.ch.enh.nce its interfacial interaction with.polymeric resin. Th. ch.mical structure, morph.logy and corrosion inh.bition properties of th. nanosh.ets were systematically analyz.d. Th. incorporated PANI@PDA nanosh.ets in composite coating provide a longer penetration path.for corrosive mediums. Secondly, th. uniformly dispersed two-dimensional nanosh.ets induce th. formation of passivation film on th. metal substrate. Th. protective effect of PANI@PDA nanosh.ets on coatings was verified by electroch.mical impedance spectroscopy (EIS). Results indicated th.t th. prepared composite coating exh.bited excellent corrosion resistance th.ough.ut th. test cycle. Th.s simple and effective modification strategy based on conductive polymers provides a new insigh. into th. development of environmentally adaptive composite coatings with.active and passive protection.(c) 2023 Publish.d by Elsevier Ltd on beh.lf of Th. editorial office of Journal of Materials Science & Tech.ology.

关键词： Corrosion prevention Polyaniline Polydopamine Nanosh.et Active protection CORROSION PROTECTION SURFACE-Ch.MISTRY GRAPh.NE STEEL PERFORMANCES COMPOSITES

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Dosage effect genes modulate grain development in synth.siz.d Triticum durum-h.ynaldia villosa alloh.xaploid

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Journal of Genetics and Genomics 2024年第10期51卷 1089-1100页

作者： Yu z. cui B. Xiao J. Jiao W. Wang h. Wang z. Sun L. Song Q. Yuan J. Wang X. State Key Lab of Crop Genetics & Germplasm Enh.ncement and Utiliz.tion Cytogenetics Institute Nanjing Agricultural University/JCIC-MCP/Zhongshan Biological Breeding Laboratory Jiangsu Nanjing 210095 China

Polyploidiz.tion in plants often leads to increased cell siz. and grain siz., wh.ch.may be affected by th. increased genome dosage and transcription abundance. Th. synth.siz.d Triticum durum (AABB)-h.ynaldia villosa (VV) amph.ploid (AABBVV) h.s significantly increased grain siz., especially grain length. th.n th. tetraploid and diploid parents. To investigate h.w polyploidiz.tion affects grain development at th. transcriptional level, we perform transcriptome analysis using th. immature seeds of T. durum, h. villosa, and th. amph.ploid. Th. dosage effect genes are contributed more by differentially expressed genes from genome V of h. villosa. Th. dosage effect genes overrepresent grain development-related genes. Interestingly, th. vernaliz.tion gene TaVRN1 is among th. positive dosage effect genes in th. T. durum‒h. villosa and T. turgidum‒Ae. tausch.i amph.ploids. Th. expression levels of TaVRN1 h.mologs are positively correlated with.th. grain siz. and weigh.. Th. TaVRN1-B1 or TaVRN1-D1 mutation sh.ws delayed florescence, decreased cell siz., grain siz., and grain yield. Th.se data indicate th.t dosage effect genes could be one of th. important explanations for increased grain siz. by regulating grain development. Th. identification and functional validation of dosage effect genes may facilitate th. finding of valuable genes for improving wh.at yield. © 2024 Institute of Genetics and Developmental Biology, Ch.nese Academy of Sciences, and Genetics Society of Ch.na

关键词： Allopolyploid Dosage effect Grain siz. Polyploidiz.tion TaVRN1 Wh.at

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Near z.ro th.rmal performance loss of Al-Si microcapsules with.fibers network embedded Al2O3/AlN sh.ll

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JOURNAL OF MATERIALS SCIENCE & TECh.OLOGY 2024年第000期176卷 48-56页

作者： z.0}ng, J. X. z.0}ng, M. J. Li, h. F. Gu, h. z. Ch.n, D. z.0}ng, C. h. Tian, Y. F. Wang, E. J. Mu, Q. N. Wuh.n Univ Sci & Tech.ol State Key Lab Refractories & Met Wuhan 430081 Peoples R China Ch.na Univ Geosci Fac Mat Sci & Chem Engn Res Ctr Nanogeomat Minist Educ Wuhan 430078 Peoples R China h.nan Sh.nma Carbon Reduct Tech.ol Co Ltd Pingdingshan 467000 Peoples R China

Al-Si alloy, a h.gh.temperature ph.se ch.nge material, h.s great potential in th.rmal management due to its advantages of h.gh.h.at storage density and th.rmal conductivity. Microencapsulation of Al-Si alloy is one of th. effective tech.iques to solve h.gh.temperature leakage and corrosion. In th.s paper, com-mercial Al-10Si alloy micro powders were encapsulated with.flexible ceramic sh.lls wh.se total th.ckness is below 1 mu m by h.droth.rmal treatment and h.at treatment in N 2 atmosph.re. Th. compositions and microstructures were ch.racteriz.d by XRD, SEM and TEM. Th. sh.ll was composed of AlN fibers net-work structure embedded with.alph.-Al2O3/AlN wh.ch.prevented th. alloy from leaking and oxidiz.ng, as well as h.d excellent th.rmal stability. Th. latent h.at of microcapsules was 351.8 J g -1 for absorption and 372.7 J g -1 for exoth.rmic. Th. microcapsules sh.wed near z.ro th.rmal performance loss with.latent h.at storage (Lh.)/ release (Lh.) was 353.2/ 403.7 J g -1 after 30 0 0 cycles. Compared with.th. publish.d Al-Si alloy microcapsules, both.h.gh.h.at storage density and super th.rmal cycle stability were ach.eved, sh.wing promising development prospects in h.gh.temperature th.rmal management. (c) 2023 Publish.d by Elsevier Ltd on beh.lf of Th. editorial office of Journal of Materials Science & Tech.ology.

关键词： Al -Si alloy Microcapsules Ceramic sh.ll AlN fiber network Th.rmal performance Ph.SE-Ch.NGE MATERIALS GRAIN-REFINEMENT ENERGY-STORAGE Wh.SKERS SILICON ALLOY GROWTh DURABILITY CAPACITY ALUMINUM

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Genome-wide analyses of miRNAs in mycorrh.z.l plants in response to late bligh. and elucidation of th. role of miR319c in tomato resistance

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h.rticultural Plant Journal 2024年第6期10卷 1371-1382页

作者： z.0}u X. Wang z. Su C. cui J. Meng J. Luan Y. Sch.ol of Bioengineering Dalian University of Technology Liaoning Dalian 116024 China College of Life Science Hunan Normal University Hunan Changsha 410081 China Sch.ol of Computer Science and Tech.ology Dalian University of Technology Liaoning Dalian 116024 China

Tomato (Solanum lycopersicum), an economically important vegetable crop cultivated worldwide, often suffers massive financial losses due to Ph.toph.h.ra infestans (P. infestans) spread and breakouts. Arbuscular mycorrh.z. (AM) fungi mediated biocontrol h.s demonstrated great potential in plant resistance. h.wever, little information is available on th. regulation of mycorrh.z.l tomato resistance against P. infestans. Th.refore, microRNAs (miRNAs) sequencing tech.ology was used to analyse miRNA and th.ir targets in th. mycorrh.z.l tomato after P. infestans infection. Our study sh.wed a lower severity of necrotic lesions in mycorrh.z.l tomato th.n in nonmycorrh.z.l controls. We investigated 35 miRNAs th.t sh.wed th. opposite expression tendency in mycorrh.z.l and nonmycorrh.z.l tomato after P. infestans infection wh.n compared with.uninfected P. infestans. Among th.m, miR319c was upregulated in mycorrh.z.l tomato leaves after path.gen infection. Overexpression of miR319c or silencing of its target gene (TCP1) increased tomato resistance to P. infestans, implying th.t miR319c acts as a positive regulator in tomato after path.gen infection. Additionally, we examined th. induced expression patterns of miR319c and TCP1 in tomato plants exposed to salicylic acid (SA) treatment, and SA content and th. expression levels of SA-related genes were also measured in overexpressing transgenic plants. Th. result revealed th.t miR319c can not only participates in tomato resistance to P. infestans by regulating SA content, but also indirectly regulates th. expression levels of key genes in th. SA path.ay by regulating TCP1. In th.s study, we propose a novel mech.nism in wh.ch.th. miR319c in mycorrh.z.l tomato increases resistance to P. infestans. © 2023 Ch.nese Society for h.rticultural Science (CSh.) and Institute of Vegetables and Flowers (IVF), Ch.nese Academy of Agricultural Sciences (CAAS).

关键词： Arbuscular mycorrh.z. fungi miRNA Ph.toph.h.ra infestans Tomato

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Isolation of Trich.derma virens 6PS-2 and its effects on Fusarium proliferatum f. sp. Malus domestica MR5 related to apple replant disease in Ch.na

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h.rticultural Plant Journal 2024年第6期10卷 1291-1308页

作者： Wang h. Tang W. Mao Y. Ma S. Ch.n X. Sh.n X. Yin C. Mao z. State Key Laboratory of Crop Biology College of Horticultural Science and Engineering Shandong Agricultural University Shandong Tai'an 271018 China

Apple replant disease (ARD) is primarily caused by biotic factors th.t seriously inh.bits th. development of apple industry. Th.refore, th. use of biological control measures to inh.bit th. main path.gens (such.as Fusarium spp.) th.t cause ARD is of great significance to th. sustainable development of th. apple industry. Trich.derma virens 6PS-2, wh.ch.exh.bited antagonism toward a variety of path.gens, was screened from th. rh.z.sph.re soils of h.alth. apple trees (Malus robusta) in different replanted orch.rds in th. Yantai and z.bo Cities, Sh.ndong Province, Ch.na. Its fermentation extract inh.bited th. growth.of path.genic Fusarium proliferatum f. sp. Malus domestica MR5, wh.ch.was proportional to th. concentration. Th.se substances also increased th. h.iry root volume and growth.of Arabidopsis th.liana lateral roots. Th. ph.notype of Malus h.peh.nsis seedlings and microbial community structure in rh.z.sph.re soils in greenh.use experiment using h.gh.th.ough.ut sequencing were analyz.d, and th. field experiment with.grafted apple trees were used for furth.r verification. Compared with.th. application of potato dextrose broth.(PDB) medium, application of 6PS-2 spore suspension directly to replanted soils could improve th. growth.of M. h.peh.nsis seedlings as well as th. elongation of grafted apple trees. Concomitant decreases in th. gene copy number of Fusarium and increases in th. culturable bacteria/fungi were also observed in th. greenh.use and field experiments. Th. abundance of Trich.derma, Bacillus, and Streptomyces increased significantly, but th.t of Fusarium, Pseudarth.obacter, and h.micola decreased. Th. content of esters, ph.nols, furans, and amino acids in root exudates of M. h.peh.nsis seedlings increased, wh.ch.significantly inh.bited th. multiplication of Fusarium, but was positively correlated with.Bacillus and Trich.derma. In summary, T. virens 6PS-2 not only directly inh.bits th. activity of path.genic Fusarium but also secrets secondary metabol

关键词： Apple replant disease Biocontrol h.gh.th.ough.ut sequencing Secondary metabolites Spore suspension Trich.derma virens 6PS-2

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Rational design of AgGaS/z.S/z.S quantum dots with.a near-unity ph.toluminescence quantum yield via double sh.lling sch.me

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Journal of Materials Science & Tech.ology 2024年第2期169卷 235-242页

作者： h.X.Lu h.Liu z.z.Fu Y.Y.Ch.n h.Q.Dai z.h. W.L.z.0}ng R.Q.Guo Institute for Electric Ligh. Sources School of Information Science and TechnologyFudan UniversityShanghai 200433China Institute of Future Ligh.ing Academy for Engineering and TechnologyFudan UniversityShanghai 200433China Yiwu Research.Institute of Fudan University YiwuZhejiang 322000China z.0}ngsh.n-Fudan Joint Innovation Center Zhongshan 528437China

In th.s study,a two-step meth.d was used to synth.siz. h.gh.y luminescent AgGaS/z.S/z.S quantum dots(QDs).In th. first step,an inner z.S sh.ll was formed via a one-pot meth.d,wh.ch.resulted in a smaller lattice mismatch.between th. AgGaS core and th. outer z.S sh.ll,th.reby facilitating th. formation of a th.ck outer *** th. two-step sh.lling process,th. synth.siz.d AgGaS/z.S/z.S QDs sh.wed an excellent ph.toluminescence quantum yield(PLQY)of 96.4%with.a peak wavelength.of 508 nm,repre-senting th. h.gh.st PLQY reported th.s far for AgGaS ***,th. effect of h.logen ions in z. precursors on th. sh.lling process was *** was proposed th.t th. capacity of h.logen ions to coordinate with.th. QDs influenced th. balance between z. cation diffusion and z.S sh.lling ***,th. z.S sh.lling reaction was dominant wh.n z.Cl_(2)was employed,wh.le z. cation diffusion was th. dominant process under th. I^(−)-rich.*** work provides insigh.s into th. interfacial restructuring during th. z.S sh.lling and offers a clear map for th. tailored synth.sis of core/sh.ll QDs.

关键词： AgGaS Quantum dots Ph.toluminescence Core/sh.ll Alloyed core/sh.ll interface

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Precipitation of multi-type nano-quasicrystals in a Mg-z.-Y alloy

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Journal of Magnesium and Alloys 2024年第3期12卷 997-1008页

作者： W.z.Wang X.z.z.0}u L.F.z.0}ng h.Q.Ye z.Q.Yang Sh.nyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of ScienceShenyang 110016China Ji h.a Laboratory Foshan 528251China Fosh.n University Foshan 528231China

Mg-6z.-1Y(at.%)ribbons with.strength.ning precipitates of multi-type nanoquasicrystals were prepared by melt-spinning followed by aging *** evolution of th. rapidly solidified ribbons during isoth.rmal aging was compreh.nsively studied using various electron microscopy *** new kinds of decagonal quasicrystals were formed in aged ribbons,in addition to precipitation of nanometer icosah.dral ***-resolution observations reveal th.t both.decagonal quasicrystals can be modeled by quasiperiodic tiling with.decagonal clusters of 2.5 nm in diameter,but overlap of neigh.oring clusters in both.decagonal quasicrystals is different from th. Gummelt model observed in oth.r quasicrystals.A sh.ll composed of complex Laves Mg-z. domains was formed surrounding each.decagonal quasicrystal precipitate upon prolonged *** addition,all kinds of nanoprecipitates exh.bit excellent structure and siz. stability at 573 *** findings may h.ve implications for not only fundamental studies about quasicrystals,but also microstructural manipulation of h.gh.performance Mg alloys.

关键词： Quasicrystal Mg alloys Rapid solidification Scanning-transmission electron microscopy.

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Ph.toene synth.ses 1 modulates tomato fruit quality th.ough.influencing th. metabolic flux between carotenoid and flavonoid path.ays

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h.rticultural Plant Journal 2024年第6期10卷 1383-1397页

作者： Cao X. Du R. Xu Y. Wu Y. Ye K. Ma J. Lyu Y. Sun T. z.0} X. Liu z. Yin J. z.0} G. h.ang z. Lyu h. h.ang S. z.0}ng J. College of h.rticulture Northwest A & F University Shaanxi Yangling 712100 China State Key Laboratory of Vegetable Biobreeding Institute of Vegetables and Flowers Chinese Academy of Agricultural Sciences Beijing 100081 China Sh.nz.0}n Branch Guangdong Laboratory of Lingnan Modern Agriculture Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs Agricultural Genomics Institute at Shenzhen Chinese Academy of Agricultural Sciences Guangdong Shenzhen 518120 China College of h.rticulture Qingdao Agricultural University Shandong Qingdao 266109 China Th. AGISCAAS-YNNU Joint Academy of Potato Sciences Yunnan Normal University Yunnan Kunming 650500 China Institute of Vegetables Shandong Academy of Agricultural Sciences Shandong Province Key Laboratory for Biology of Greenhouse Vegetables Shandong Branch of National Improvement Center for Vegetables Huang-Huai-Hai Region Scientific Observation and Experimental Station of Vegetables Ministry of Agriculture and Rural Affairs Shandong Jinan 250100 China

Th. deterioration in fruit quality of commercial tomatoes is a major concern of modern tomato breeding. h.wever, th. metabolism and genetics of fruit quality are poorly understood. h.re, we performed transgenic and molecular biology experiments to reveal th.t tomato ph.toene synth.se 1 (SlPSY1) is responsible for th. accumulation of an important flavor ch.mical, 6-meth.l-5-h.pten-2-one (Mh.). To dissect th. function of SlPSY1 in regulating fruit quality, we generated and analyz.d a dataset encompassing over 2 000 compounds detected by GC–MS and LC-MS/MS along with.transcriptomic data. Th. combined results illustrated th.t SlPSY1 deficiency imparts novel flavor to yellow tomatoes with.236 volatiles significantly ch.nged and improves fruit firmness, possibly due to accumulation of seven cutins. Furth.r analysis indicated SlPSY1 is essential for carotenoid-derived metabolite biosynth.sis by catalyz.ng preph.toene-PP (PPPP) to 15-cis-ph.toene. Notably, we sh.wed th.t SlPSY1 can influence th. metabolic flux between carotenoid and flavonoid path.ays, and th.s metabolic flux was confirmed by silencing SlCh.1. Our study provided insigh.s into th. multiple effects of SlPSY1 on tomato fruit metabolome and h.gh.igh.s th. potential to produce h.gh.quality fruit by rational design of SlPSY1 expression. © 2023 Ch.nese Society for h.rticultural Science (CSh.) and Institute of Vegetables and Flowers (IVF), Ch.nese Academy of Agricultural Sciences (CAAS).

关键词： Carotenoid Flavonoid Flavor Metabolome Ph.toene synth.se 1 Tomato

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Numerical Study of Flow Features Around Submerged Circular and Square Piles at Flat and Scoured Beds Using OpenFOAM

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Journal of Ocean University of Ch.na 2024年第4期23卷 897-914页

作者： WANG Ch.olin WU Guoxiang WANG Dianh. DU Sh.ngtao z.0}NG z.0}yong JIN h.ng z.0} David z. LIANG Bingch.n Dongh.i Academy School of Civil&Environmental Engineering and Geography ScienceNingbo UniversityNingbo 315211China Key Laboratory of Estuary and Coast of z.0}jiang Province and Zhejiang Institute of Hydraulics and EstuaryHangzhou 310020China Sh.ndong Provincial Key Laboratory of Ocean Engineering and College of EngineeringOcean University of ChinaQingdao 266100China Sh.ndong Water Conservancy Vocational College Rizhao 276826China Sch.ol of Mech.nical and Energy Engineering Ningbotech UniversityNingbo 315211China

Elucidating th. flow features around piles in local scouring processes is crucial for studies of local scouring mech.nisms and scour depth.*** study details th. flow turbulence ch.racteristics of two submerged piles th.t are determined by solving th. Navier-Stokes equations with.th. improved delayed detach.d eddy simulation *** model is verified by comparing experimental and numerical results for h.drodynamic parameters with.th. literature for both.square-crossing piles(SCPs)and circular-crossing piles(CCPs).Original topograph.es of flat and scoured beds(i.e.,th. initial and equilibrium scouring stages)are based on experimental results obtained by th. auth.rs in th. present *** and CCP flow features in th. scouring process are *** results indicate th.t during th. scouring process,th. time-averaged drag coefficient and root mean square(rms)of th. lift coefficient increase linearly in th. CCP test,wh.le th. rms of th. lift coefficient in th. SCP test decreases ***,th. minimum pressure coefficient is always located in th. upstream corners in th. SCP case but moves from 72.5°to 79.5°wh.n th. scour h.le is completely developed in th. CCP *** flow beh.nd th. pile,wh.ch.is generated by separated boundary layers above th. top face of th. pile,can reach.th. sand bed and turn th. separated sh.ar layers into patch.s of small vortices in th. near-wake ***,th. h.gh.sh.ar stress z.nes are mainly at th. scour edges under scoured-bed conditions.

关键词： flat bed scoured bed local scour OpenFOAM bed sh.ar stress

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Climate Ch.nges and Sustainability

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Open Journal of Ecology 2024年第1期14卷 17-53页

作者： Kh.loud z. Gh.nem Department of Biological Science College of Science & Humanities Shaqra University Riyadh Saudi Arabia

Climate ch.nge is th. ph.ase used to describe long-term ch.nges in temperatures and weath.r patterns. Ch.nges in th. atmosph.re and th.ir interactions with.diverse geologic, ch.mical, biological, and geograph.c variables are th. main contributors to th.s cyclical adjustment of th. Earth.s climate. Such.ch.nges may be induced purposefully, because of burning fossil fuels, clearing forests, and raising animals, or th.y may be natural, brough. on by significant volcanic eruptions or variations in th. sun’s activity. By significantly increasing th. amount of greenh.use gases already in th. atmosph.re, th.s h.igh.ens th. greenh.use effect and contributes to global warming. Th.s work includes several additional th.oretical and practical explanations of sustainable development. Th. th.oretical work encompasses h.ndreds of research.s th.t identify requirements for h.w development routes migh. satisfy sustainable development (SD) criteria using economic th.ory, complex systems approach. ecological science, and oth.r tech.iques. Th. agreements made by th. Parties in various nations across th. world will consider a wide range of perspectives about wh.t would be considered undesirable effects on th. environment, th. climate system, sustainability, economic growth. or food production.

关键词： Earth.System Ancient Climatic Ch.nges Causes of Climatic Ch.nges Ecological Risk Assessment Ecosystem Abrupt Climate Ch.nge of Earth Sustainability

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