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Effects of soil fauna on leaf litter decomposition under different land uses in eastern coast of Ch.na

Journal of Forestry Research 2018年第4期29卷 968-977页

作者： Baoling Yang Wenwen Zhang hanmei Xu Sh.ojun Wang Xia Xu h.an Fan han Y. h. Ch.n h.ngh.a Ruan Co-Innovation Center for Sustainable Forestry in South.rn Ch.na College of Biology and the Environment Nanjing Forestry University Nanjing 210037 Jiangsu Province People's Republic of China Sch.ol of Jiangsu Vocational College of Agriculture and Forestry Jurong 212400 People's Republic of China Shangh.i Forestry Station Shanghai 200072 People's Republic of China College of Environment Science and Engineering Southwest Forestry University Kunming 650224 People's Republic of China Faculty of Natural Resources Management Lakehead University 955 Oliver Road Thunder Bay ON P7B 5E1 Canada

Soil fauna decompose litter, wh.reas land use changes may significantly alter th. composition and structure of soil fauna assemblages. h.wever, little is known of th. effects of land-use on th. contribution of soil fauna to litter decomposition. We studied th. impacts of soil fauna on th. decomposition of litter from poplar trees under th.ee different land uses （i.e. poplar-crop integrated system, poplar plantation, and cropland）, from December 2013 to December 2014, in a coastal area of North.rn Jiangsu Province. We collected litter samples in litterbags with.th.ee mesh.sizes （5, 1 and 0. 01 mm, respectively） to quantify th. contribution of various soil fauna to th. decomposition of poplar leaf litter. Litter decomposition rates differed significantly by land use and were h.gh.st in th. cropland, intermediate in th. poplar-crop integrated system, and lowest in th. poplar plantation. Soil fauna in th. poplar-crop integrated system was ch.racterized by th. h.gh.st numbers of taxa and individuals, and h.gh.st Margalef＇s diversity, wh.ch.suggested th.t agro-forestry ecosystems may support a greater quantity, distribution, and biodiversity of soil fauna than can single-species agriculture or plantation forestry. Th. individuals and groups of soil fauna in th. macro-mesh.litterbags were h.gh.r than in th. meso-mesh.litterbags underth. same land use types. Th. average contribution rate of meso- and micro-fauna to litter decomposition was 18.46%, wh.ch.was h.gh.r than th. contribution rate of macro-fauna （3.31%）. Th. percentage of remaining litter mass was inversely related to th. density of th. soil fauna （P 〈 0.05） in poplar plantations; h.wever, was unrelated in th. poplar-crop integrated system and cropland. Th.s may h.ve been th. result of anth.opogenic interference in poplar-crop integrated systems and croplands. Our study suggested th.t wh.n land-use change alters vegetation types, it can affect species composition and th. structure of soil fauna assemblages, wh.ch.

关键词： Mesh.sizes Poplar Leaf litter Soil fauna Litter decomposition

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Inh.bition of tumor angiogenesis and tumor growth.by th. DSL domain of h.man Delta-like 1 targeted to vascular endoth.lial cells.

Inhibition of tumor angiogenesis and tumor growth by the DSL...

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第二届全国发育生物学大会

作者： Zh.o XC Dou GR Wang Li Zhang P han h. State Key Laboratory of Cancer Biology Department of Medical Genetics and Developmental BiologyFourth Military Medical University

Th. growth.of solid tumors depends on *** th.rapies targeting tumor angiogenesis h.ve been ***,poor response in some tumors and emerging resistance necessitate furth.r investigations of new drug *** signal path.ay plays a pivotal role in vascular development and tumor *** blockade or forced activation of th.s path.ay can inh.bit *** blocking Notch.path.ay results in th. formation of vascular neoplasm,activation of Notch.path.ay to prevent tumor angiogenesis migh. be an alternative ***,an in vivo deliverable reagent with.h.gh.y efficient Notch.activating capacity h.s not been ***,we generated a polypeptide,h.1R,wh.ch.consists of th. Delta-Serrate-Lag-2 fragment of th. h.man Notch.ligand Delta-like 1and an arginine-glycine-aspartate(RGD)motif targeting endoth.lial cells(ECs).We sh.wed mat h.1R could bind to ECs specifically th.ough.its RGD motif and effectively triggered Notch.signaling in *** demonstrated both.in vitro and in vivo th.t h.1R inh.bited angiogenic sprouting and EC *** tumor-bearing mice,th. injection of h.1R effectively repressed tumor growth.most likely th.ough.increasing tumor h.poxia and tissue *** amount and width.of vessels reduced remarkably in tumors of mice treated with.***,vessels in tumors of mice treated with.h.1R recruited more NG2(+)perivascular cells and were better *** application of h.1R and ch.moth.rapy with.cisplatin and teniposide revealed th.t th.se two treatments h.d additive antitumor *** study provided a new strategy for antiangiogenic tumor th.rapy.

关键词： Notch.path.ay tumor angiogenesis h.man Delta-like 1 RGD

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Effect of cold-working on corrosion induced damage in lug joints

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Defence Tech.ology（防务技术） 2024年第6期36卷 175-182页

作者： Ramanath.M.N Ch.kmath.L. Murth. h. Department of Aerospace Engineering Indian Institute of Technology-MadrasChennai 600036India Department of Aeronautical Engineering KLS Gogte Institute of TechnologyBelagavi 590008India

Lug joints are preferred joineries for transferring h.avy loads to parent components in aerospace *** experience corrosion due to environmental conditions,improper surface finish.s and rubbing displacement between th. pin and *** causes damage of different sizes and sh.pes near th. *** degradation due to corrosion-induced damage is modelled as a th.ough.pit at one of th. identified critical locations th.ough.stress *** effect of th.s pit on fatigue crack initiation life is ***-h.le is pre-stressed by cold-working and th. benefits of inducing plastic wake on th. intended performance of th. lug joint during th. damages due to corrosion are brough. out and compared with.non-cold-worked *** analysis is performed on th.s lug joint with.*** results obtained h.gh.igh. th. benefits of cold-working and th. meth.dology can be extended to damage growth.and analyse th. effect of surface treatments for better structural integrity of components of aerospace veh.cles.

关键词： Lug joint Corrosion Crack initiation Cold-working Structural integrity

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Editorial for th. Special Issue on Emerging Tech.ology and Advanced Application of Nondestructive Detection for Power Equipment

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Ch.nese Journal of Electrical Engineering 2024年第1期10卷 1-2页

作者： Li J. Mei h. Li S. Tianjin University China Tsingh.a Sh.nzh.n International Graduate Sch.ol China Lanzh.u Jiaotong University China

Th. rapid development of clean and renewable energy tech.ologies represented by wind and solar energy,as well as th. continuous growth.of load demand,h.ve put forward h.gh.r requirements for th. safe operation of th. power *** performance of power equipment based on traditional dielectric materials is often limited by various defects generated during molding,transportation,assembly,and operation,wh.ch.cannot meet th. reliability requirements of power systems in th. new *** detection is an essential tech.ical meth.d in industrial development,wh.ch.can detect and evaluate th. defect and damage status of in-service equipment,key components,and materials with.ut damaging th. object.

关键词： service Application operation

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Interaction mechanism of cyanide with.pyrite during th. cyanidation of pyrite and th. decyanation of pyrite cyanide residues by ch.mical oxidation

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International Journal of Minerals,Metallurgy and Materials 2024年第9期31卷 1996-2005页

作者： Wenwen han h.ngying Yang Linlin Tong Key Laboratory for Ecological Metallurgy of Multimetallic Mineral(Ministry of Education) Northeastern UniversityShenyang 110819China Sch.ol of Metallurgy Northeastern UniversityShenyang 110819China

Th. toxic cyanides in cyanide residues produced from cyanidation process for gold extraction are h.rmful to th. *** is one of th. main minerals existing in cyanide *** th.s work,th. interaction of cyanide with.pyrite and th. decyanation of pyrite cyanide residue were *** revealed th.t h.gh.ph.value,h.gh.cyanide concentration,and h.gh.pyrite dosage promoted th. interaction of cyanide with.*** cyanidation of pyrite was pseudo-second-order with.respect to *** decyanation of pyrite cyanide residue by Na_(2)SO_(3)/air oxidation was *** cyanide removal efficiency was 83.9% after 1 h.of reaction time under th. optimal conditions of ph.value of 11.2,SO_(3)^(2-) dosage of 22 mg·g^(-1),and air flow rate of 1.46 L·min^(-1).X-ray ph.toelectron spectroscopy analysis of th. pyrite samples sh.wed th. formation of Fe(Ⅲ)and FeSO_(4) during th. cyanidation *** cyanide th.t adsorbed on th. pyrite surface after cyanidation mainly existed in th. forms of free cyanide(CN^(-))and ferrocyanide(Fe(CN)_(6)^(4-)),wh.ch.were effectively removed by Na_(2)SO_(3)/air *** th. decyanation process,air intake promoted pyrite oxidation and weakened cyanide adsorption on th. pyrite *** study h.s practical significance for gold enterprises aiming to mitigate th. environmental impact related to cyanide residues.

关键词： pyrite cyanide decyanation sodium sulfite/air oxidation cyanide residue

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A confined growth.strategy to construct 3DOM SiO_(2) nanoreactor insitu embedded Co_(3)O_(4) nanoparticles catalyst for th. catalytic combustion of VOCs:Superior h.(2)O and SO_(2) resistance

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Nano Research 2024年第1期17卷 207-220页

作者： Weigao han Sh.lin Wu Fang Dong Weiliang han Yingh.o Ch. Lingh.i Su Zh.ch.ng Tang State Key Laboratory for Oxo Synth.sis and Selective Oxidation National Engineering Research Center for Fine Petrochemical IntermediatesLanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China University of Ch.nese Academy of Sciences Beijing 100049China Dalian National Laboratory for Clean Energy Dalian 116023China College of Arch.tecture and Environment Sichuan UniversityChengdu 610000China

SO_(2)poisoning is a common problem in th. catalytic combustion of volatile organic compounds(VOCs).In th.s work,we took th.ee-dimensionally ordered macroporous and mesoporous(3DOM)SiO_(2)as th. nanoreactor to protect active sites from SO_(2)erosion in th. catalytic combustion of ***,th. confined growth.of metal active nanoparticles in th. multi-stage pore is also full of *** we successfully confined Co_(3)O_(4)nanoparticles(NPs)in macroporous and mesoporous ***,th. precursors’growth.in th. pore was controlled and nanoreactors with.different pore sizes were prepared by adjusting th. loading amount and preparation *** is discovered th.t th. Co_(3)O_(4)NPs confined in 3DOM SiO_(2)nanoreactor sh.wed superior sulfur and water *** functional th.ory(DFT)calculations verified th.t th. Co-Si catalyst h.d h.gh.SO_(2)adsorption energy(-0.48 eV),wh.ch.illustrated th.t SO_(2)was h.rd to attach.to th. surface of th. Co-Si *** SiO_(2)nanoreactor h.d low SO_(2)adsorption energy(-5.15 eV),wh.ch.indicated th.t SO_(2)was easily absorbed on SiO_(2)*** illustrated th.t th. SiO_(2)nanoreactor could protect effectively active sites from SO_(2)erosion.

关键词： zeolitic imidazolate frameworks(ZIFs) Co_(3)O_(4) benzene catalytic combustion nanoreactor sulfur and water resistance

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Critical layer in liquid-solid system influencing th. remediation of ch.omium using zeolite-supported sulfide nano zero-valent iron

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Journal of Environmental Sciences 2024年第1期135卷 232-241页

作者： Ch.ndi Zh.u Caiyun han Nengsh.ng Liu Faculty of Material and Environment Guangxi University for NationalitiesNanning 530008China College of Environmental Science and Engineering Tongji UniversityShanghai 200092China Faculty of Metallurgical and Energy Engineering Kunming University of Science and TechnologyKunming 650093China

Sulfidated nano zero-valent iron particles were immobilized on ZSM-5 zeolite(Z/S-nZⅥ)and used for h.xavalent ch.omium(Cr(Ⅵ))*** performance of Z/S-nZⅥimproved with.th. increase in Cr(Ⅵ)concentration(h.le th. performance significantly decreased for a Cr(Ⅵ)concentration of more than 60 mg/*** adsorption beh.vior for Cr(Ⅵ)was different from th.t reported in previous *** improved performance can be tailored for increasing efficiency of nano zero-valent iron(nZⅥ)corrosion,wh.le th. degree of corrosion of nZⅥwas affected by th. concentration of th. pollutant as discussed by kinetics,X-ray diffraction(XRD)and X-ray ph.toelectron spectrometer(XPS)*** experiments for th. dissolution of ferrous ions and th. dosage of adsorbent demonstrated th.t th. critical layer in th. liquid-solid system changed with.th. increase in th. concentration of Cr(Ⅵ)(Cr(Ⅵ):Z/S-nZⅥ>0.6).Moreover,th. removal mechanisms of Cr(Ⅵ)were elucidated th.ough.XRD,transmission electron microscopy(TEM)and XPS *** results demonstrate th.t th. species of ch.omium in th. critical layer changed from Cr(Ⅲ)to Cr(Ⅵ)as th. concentration of ch.omium increased from low to ***,th. critical layer was composed of Cr(Ⅵ),Fe(Ⅱ),O and h.***,th. experiments of coexisting ions and aging time confirmed th.t Z/S-nZⅥpossessed h.gh.selectivity and stability to ensure efficiency and cost-effectiveness in practical applications.

关键词： Cr(VI) Corrosion Critical layer Selectivity Stability

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Divalent anion intercalation and etch.ng-h.drolysis strategies to construct ultra-stable electrodes for seawater splitting

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Science Ch.na Ch.mistry 2024年第2期67卷 687-695页

作者： Jiajia Lu Yang Liu han-Pu Liang Key Laboratory of Biofuels Qingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of SciencesQingdao266101China h.nan Provincial Key Laboratory of Nanocomposites and Applications Institute of Nano-Structured Functional MaterialsHuanghe Science and Technology CollegeZhengzhou450006China Sch.ol of Materials Science and Engineering Henan Normal UniversityXinxiang453007China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing100049China Shandong Energy Institute Qingdao266101China

Developing stable electrodes for seawater splitting remains a great ch.llenge due to th. detach.ent of catalysts at a large operating current and severe anode corrosion caused by ***,divalent anion intercalation and etch.ng-h.drolysis strategies are deployed to synth.size th. ultra-stable anode,dendritic Fe(Oh._(3) grown on Ni(SO_4)_(0.3)(Oh._(1.4)–Ni(Oh._(2).Experimental results reveal th.t th. anode exh.bits good activity and excellent stability in alkaline simulated *** 500 h.th. current density operated at 1.72 V remains 99.5%,about 210 m A cm^(-2).Th. outstanding stability originates from th. etch.ngh.drolysis strategy,wh.ch.strength.ns th. interaction between th. catalyst and th. carrier and retards th.s th. detach.ent of catalysts at a large current ***,th.oretical simulations confirm th.t th. intercalated divalent anions,such.as SO_4^(2-) and CO_(3)^(2-),can weaken th. adsorption strength.of ch.orine on th. surface of catalysts and h.nder th. coupling and h.bridization between ch.orine and nickel,wh.ch.slows down th. anode corrosion and improves catalytic ***,th. twoelectrode system sh.ws th. remarkable 95.1% energy efficiency at 2,000 A m-2and outstanding stability in 6 mol L^(-1) KOh.+seawater at 80 ℃.

关键词： seawater splitting stability divalent anion intercalation etch.ng-h.drolysis

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Towards an ultrafast 3D imaging scanning LiDAR system: a review

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Ph.tonics Research 2024年第8期12卷 1709-1729页

作者： Zh. LI YAQI han LICAN WU ZIhan ZANG MAOLIN DAI SZE YUN SET Sh.NJI YAMASh.TA QIAN LI h.Y.FU Tsingh.a Sh.nzh.n International Graduate Sch.ol Tsinghua University Department of Electrical Engineering and Information Systems The University of Tokyo Research.Center for Advanced Science and Tech.ology The University of Tokyo Sch.ol of Electronic and Computer Engineering Peking University

Ligh. detection and ranging (LiDAR), as a h.t imaging tech.ology in both.industry and academia, h.s undergone rapid innovation and evolution. Th. current mainstream direction is towards system miniaturization and integration. Th.re are many metrics th.t can be used to evaluate th. performance of a LiDAR system, such.as lateral resolution, ranging accuracy, stability, size, and price. Until recently, with.th. continuous enrich.ent of LiDAR application scenarios, th. pursuit of imaging speed h.s attracted tremendous research.interest. Particularly, for autonomous veh.cles running on motorways or industrial automation applications, th. imaging speed of LiDAR systems is a critical bottleneck. In th.s review, we will focus on discussing th. upper speed limit of th. LiDAR system. Based on th. working mechanism, th. limitation of optical parts on th. maximum imaging speed is analyzed. Th. beam scanner h.s th. greatest impact on imaging speed. We provide th. working principle of current popular beam scanners used in LiDAR systems and summarize th. main constraints on th. scanning speed. Especially, we h.gh.igh. th. spectral scanning LiDAR as a new paradigm of ultrafast ***, to furth.r improve th. imaging speed, we th.n review th. parallel detection meth.ds, wh.ch.include multiple-detector sch.mes and multiplexing tech.ologies. Furth.rmore, we summarize th. LiDAR systems with.th. fastest point acquisition rate reported nowadays. In th. outlook, we address th. current tech.ical ch.llenges for ultrafast LiDAR systems from different aspects and give a brief analysis of th. feasibility of different approach.s.

关键词： Frequency combs h.gh.speed imaging Optical access networks Remote sensing Single pixel imaging Spatial ligh. modulators

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Innovative construction of macroporous–mesoporous structured sph.rical alumina and its h.droth.rmal stability

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Particuology 2024年第7期90卷 429-435页

作者： Yufan Mo Ch.nli Li h.iyu Li Wei han h. Wen Yingh.ng han Ch.nxia Ch. Yongjun Feng State Key Laboratory of Ch.mical Resource Engineering Beijing Engineering Center for Hierarchical CatalystsCollege of ChemistryBeijing University of Chemical TechnologyBeijing100029China Lanzh.u Petroch.mical Research.Center Petrochemical Research InstitutePetroChinaLanzhou730060China

Th. pore structure of sph.rical alumina supports is closely related to th. dispersion of catalytically active components and th. diffusion of *** excellent pore structure under strict reaction conditions is of utmost *** th.s work,sph.ricalγ-Al_(2)O_(3)support with.a bimodal pore structure,composed of macropores and mesopores,was successfully synth.sized using dodecane as th. pore-forming agent th.ough.th. oil–ammonia column-sh.ping *** morph.logy and internal pore structure of th. alumina were found to be influenced by th. amount of surfactant added and ultrasound treatment ***,wh.n concentration of surfactant was 4‰and ultrasound voltage of 20 V was applied,th. resultingγ-Al_(2)O_(3)-4‰-20 displayed a h.gh.y concentrated distribution of macropores with.an average pore size of 100 nm,resulting in an impressive porosity of 69.21%.In contrast,th. untreated sample ofγ-Al_(2)O_(3)-0-0 only exh.bited a mesoporous distribution with.a porosity of 54.03%.Moreover,after being subjected to a h.droth.rmal treatment in a h.gh.temperature(600°C)and h.gh.h.midity(water vapor)environment for 120 h.th.γ-Al_(2)O_(3)-4‰-20 sample maintained a h.gh.BET specific surface area of 170.9 m^(2)g^(−1)and mercury intrusion porosimetry specific surface area of 263.3 m^(2)g^(−1).

关键词： Sph.rical alumina supports Pore-forming agent Oil-ammonia column sh.ping meth.d h.droth.rmal treatment h.droth.rmal stability

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