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Enhancing the peroxidase-like activity of MoS_(2)-based nanozymes by introducing attapulgite for antibacterial application and sensitive detection of glutathione

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Nano Research 2024年第8期17卷 7415-7426页

作者： Feng Feng Yihe zhang Xiao zhang Bin Mu Jiahe zhang Wenjie Qu Wangshu Tong Minmin Liang Qi An Zhanjun Guo Lu Zhao Engineering Research Center of Ministry of Education for geological Carbon Storage and Low Carbon Utilization of Resources Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid WastesNational Laboratory of Mineral MaterialsSchool of Materials Science and TechnologyChina University of Geosciences(Beijing)Beijing 100083China Key Laboratory of Clay mineral Applied Research of Gansu Province Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China Experimental Center of Advanced Materials School of Materials Science and Engineering School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China

Nanozymes are next-generation of nanomaterials with enzyme-like *** particular,nanozymes with peroxidase(POD)-like activity have been utilized in various fields,including antibacterial,detection,degradation,***,their extensive applications were limited by their low catalytic activity ***,we have presented a composite nanozyme based on attapulgite(ATP)(Fe-ATP-MoS_(2)(FAM)),which exhibited enhanced POD-like activity(185.33 U·mg^(−1)),4.25 times higher than that of Fe-MoS_(2)(FM)(43.63 U·mg^(−1)).The density functional theory(DFT)calculations indicated that the addition of ATP increased the electron density of metal centers(Mo and Fe).More importantly,Michaelis–Menten kinetics revealed that the introduction of ATP significantly enhanced the binding affinities of substrates through the pores of ATP,forming a highly concentrated substrate microenvironment and thus promoting its POD-like ***,from molecular size and kinetic analysis,we proposed that the changes in substrate size before and after oxidation also significantly affected its Michaelis-constant(Km)***,we utilized FAM in the applications of highly effective antibacterial application and sensitive detection of glutathione(GSH).In conclusion,this work provides a novel approach for designing a highly efficient nanozyme based on natural mineral composites.

关键词： attapulgite peroxidase electron density affinity antibacterial

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Modeling hydrological consequences of 21st-Century climate and land use/land cover changes in a mid-high latitude watershed

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Geoscience Frontiers 2024年第5期15卷 118-135页

作者： Chuanqi Liu Chi Xu Zhijie zhang Shengqing Xiong Wanchang zhang Bo zhang Hao Chen Yongxin Xu Shuhang Wang Key Laboratory of Digital Earth Science Aerospace Information Research InstituteChinese Academy of SciencesBeijing 100094China International Research Center of Big Data for Sustainable Development Goals Beijing 100094China University of chinese academy of sciences Beijing 100049China National Engineering Laboratory for Lake Pollution Control and Ecological Restoration Chinese Research Academy of Environmental SciencesBeijing 100012China Natural Resources Aero-geophysical and Remote Sensing Centre China Geological Survey BureauBeijingChina School of Geography Development and EnvironmentThe University of ArizonaTucsonAZ 85719USA School of Geographic and Environmental sciences Tianjin Normal UniversityTianjin 300387China Department of Earth sciences University of the Western CapeCape Town 7535South Africa

The Naoli River Basin(NRB),a pivotal agricultural production area in China,is poised to undergo substantial impacts on water resources due to projected climate and land use/cover(LULC)*** its significance in the context of China’s expanding farmland construction in the NRB,there exists limited research on the potential repercussions of future shifts in runoff,soil water content(SWC),and evapotranspiration(ET)on crop productivity and water availability(both in terms of quantity and timing).This study employs future LULC maps and an ensemble of ten CMIP6 Global Climate Models(GCMs)across three scenarios to drive the well-calibrated distributed hydrological model,*** objective of present study is aimed on projecting hydrological consequences under climate and land use/land cover changes in near-term(2026–2050),middle-term(2051–2075),and far-term(2076–2100)future in comparison to the baseline period of 1990–*** consistently indicate an increase trend in annual average ET,runoff,and SWC in the NRB across all three future periods under the three SSP *** changes emerge as the primary driver influencing regional hydrological processes in the near ***,under high-emission scenarios,monthly runoff and SWC are projected to significantly increase in March but decrease in April during the middle and far future periods compared to the *** shift is attributed to the anticipated warming of winter and spring,leading to a transition in peak snowmelt from April to ***,the expansion of cropland intensifies crop evapotranspiration demand,potentially exacerbating water stress during the early stages of crop growth in *** findings underscore the importance of addressing the substantial impacts of climate change and land use planning on regional water cycling *** planning to mitigate water shortages during the initial stage of future crop growth is crucial for ensuring food security and managing wat

关键词： Climate and LULC changes ESSI-3 Hydrological modeling Snowmelt Naoli River Basin

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Geochronology and geochemistry of the Hegenshan ophiolitic complex:Implications for late-stage tectonic evolution of the Inner Mongolia-Daxinganling Orogenic Belt,China

Geochronology and geochemistry of the Hegenshan ophiolitic c...

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中国科学院地质与地球物理研究所2008学术年会

作者： Laicheng Miao~(a,*),Weiming Fan~a,Dunyi Liu~b,Fuqin zhang~a,Yuruo Shi~b,Feng Guo~c a institute of Geology and Geophysics,chinese academy of sciences,beijing 100029,China b beijing SHRIMP Center,institute of Geology,chinese academy of geological sciences,beijing 100037,China c Guangzhou institute of Geochemistry,chinese academy of sciences,Guangzhou 510640,China

The Hegenshan ophiolite in the Inner Mongolian-Daxinganling Orogenic Belt(IMDOB),northern China,consists of several discontinuous blocks composed dominantly of serpentinized ultramafic rocks with subordinate cumulate gabbros,mafic lavas and dikes, intruded by younger granodiorite *** ultramafic rocks are highly depleted,serpentinized harzburgites with minor dunite,characterized by relative enrichment in large ion lithophile elements(LILE,e.g.,Ba and Rb) and light rare earth elements(LREE).They are interpreted to be oceanic mantle that has undergone extensive melt extraction and variable degrees of *** cumulate rocks consist mainly of gabbro and troctolite with LREE-depleted chondrite-normalized REE patterns showing significant positive Eu *** are enriched in LILE,depleted in Nb,and have high positiveε(t)(+8 to +11),suggesting derivation from a subduction-modified N-MORB-like *** gabbros and mafic dikes have essentially the same age(295±15 and 298±9 Ma,respectively). The mafic dikes have flat to LREE-depleted,chondrite-normalized REE patterns,are depleted in Nb,enriched in LILE and have NMORB-type Nd isotopic signatures(ε(t)=+8.1 to +10).The mafic lavas,erupted at 293±1 Ma,can be divided into two groups;one composed of strongly deformed metabasalts similar in chemical and Nd-Sr isotopic compositions to the mafic dikes,and the other composed of undeformed and unmetamorphosed basalts with oceanic island basalt(OIB)-like trace element signatures and Nd isotopic *** granodiorite dikes,which were intruded at 244±4 Ma,have LREE-enriched,chondrite-normalized REE patterns with no Eu *** abnormally highε(t) values(+6.3 to +6.8) and low I(0.70412 to 0.70450) suggest formation from melts derived from thickened oceanic crust during or shortly after closure of the Paleo-Asian *** structure,lithology and geochemistry of the Hegenshan ophiolite suggest that it is a Cordilleran-type body formed in a supra-subduction

关键词： Ophiolite Geochronology Geochemistry Late Paleozoic Inner mongolia

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Centrifuge modeling of unreinforced and multi-row stabilizing piles reinforced landslides subjected to reservoir water level fluctuation

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第5期16卷 1600-1614页

作者： Chenyang zhang Yueping Yin Hui Yan Sainan Zhu Ming zhang Luqi Wang Department of Civil Engineering The University of Hong KongHong KongChina China institute of Geo-environment Monitoring BeijingChina Chongqing 107 Municipal Construction Engineering Co. Ltd.ChongqingChina Faculty of Engineering China University of GeosciencesWuhanChina School of Civil Engineering Chongqing UniversityChongqingChina

With the construction of the Three Gorges Reservoir dam,frequent reservoir landslide events have been *** recent years,multi-row stabilizing piles(MRSPs)have been used to stabilize massive reservoir landslides in *** this study,two centrifuge model tests were carried out to study the unreinforced and MRSP-reinforced slopes subjected to reservoir water level(RWL)operation,using the Taping landslide as a *** results indicate that the RWL rising can provide lateral support within the submerged zone and then produce the inward seepage force,eventually strengthening the slope ***,a rapid RWL drawdown may induce outward seepage forces and a sudden debuttressing effect,consequently reducing the effective soil normal stress and triggering partial pre-failure within the RWL fluctuation ***,partial deformation and subsequent soil structure damage generate excess pore water pressures,ultimately leading to the overall failure of the reservoir *** study also reveals that a rapid increase in the downslope driving force due to RWL drawdown significantly intensifies the lateral earth pressures exerted on the ***,the MRSPs possess a considerable reinforcement effect on the reservoir landslide,transforming the overall failure into a partial deformation and failure situated above and in front of the *** mechanical transfer behavior observed in the MRSPs demonstrates a progressive alteration in relation to RWL *** the RWL rises,the mechanical states among MRSPs exhibit a growing *** shear force transfer factor(*** ratio of shear forces on pile of the n th row to that of the first row)increases significantly with the RWL *** indicates that the mechanical states among MRSPs tend toward an enhanced *** insights gained from this study contribute to a more comprehensive understanding of the failure mechanisms of reservoir landslides and the mechanical behavior of M

关键词： Reservoir landslide Failure mechanism Multi-row stabilizing piles Mechanical behavior

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Provenance of Carboniferous sedimentary rocks in the northern margin of Dabie Mountains,central China and the tectonic significance:constraints from trace elements,mineral chemistry and SHRIMP dating of zircons

Provenance of Carboniferous sedimentary rocks in the norther...

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中国科学院地质与地球物理研究所2004学术年会

作者： Renwei Li~(a,*),Shuangying Li~b,Fuquan Jin~b,Yusheng Wan~c,Shukun zhang~d a institute of Geology and Geophysics,chinese academy of sciences,beijing 100029,China b Department of Resource and Environment sciences,Hefei Industrial University,Hefei 230026,China c SHRIMP II Laboratory,institute of Geology,chinese geological academy of sciences.beijing 100037,China d institute of Geomechanics,chinese geological academy of sciences,beijing 100081,China

A suite of slightly metamorphosed Carboniferous sedimentary strata occurs in the northern margin of the Dabie Mountains, central *** consists,in ascending order,of the upper Huayuanqiang Formation(C),the Yangshan Formation(C),the Daorenchong Formation(C),the most widely distributed Huyoufang Formation(C) and the Yangxiaozhuang Formation (C).The provenance of the Carboniferous sedimentary rocks is constrained by the integration of trace elements,detrital mineral chemistry and sensitive high resolution ion microprobe(SHRIMP) dating of detrital zircons,which can help to understand the connection between the provenance and the Paleozoic tectonic evolution of the Qinling-Dabie *** trace element compositions indicate that the source terrain was probably a continental island *** tourmalines were mainly derived from aluminous and Al-poor metapelites and metapsammites,and some are sourced from Li-poor granitoids, pegmatites and *** garnets,found only in the uppermost Huyoufang Formation,are almandine and Mn-almandine garnets,indicating probable sources mainly from garnetiferous schists,and partly from granitoid *** detrital white Kmicas are muscovitic in the Huayuanqiang,Daorenchong and Huyoufang Formations,and phengitic with Si contents(p.f.u.) from 3.20 up to max.3.47-3.53 in the uppermost Huyoufang and the Yangxiaozhuang Formations,a meta-sedimentary source. Major components in the detrital zircon age structure for the Huyoufang Formation range from 506 to 363 Ma,centering on - 400 and - 480 Ma,which is characteristic of the Qinling and Eriangping Groups in the Qinling and Tongbai Mountains, central ***,the major source of the Carboniferous sedimentary rocks in the northern margin of Dabie Mountains was from the southern margin of the Sino-Korean Craton represented by the Qinling and Eriangping *** source area was an island-arc system during the Early Paleozoic that collided with the Sino-Korea plate towards the e

关键词： Provenance Detrital minerals Trace elements Zircon geochronology Carboniferous Dabie Mountains Central China

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Zircon SHRIMP U-Pb dating for gabbro at Chaotiehe in the Haicheng area,eastern Liaoning

Zircon SHRIMP U-Pb dating for gabbro at Chaotiehe in the Hai...

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中国科学院地质与地球物理研究所第十届(2010年度)学术年会

作者： MIAO LaiCheng~(1*),zhang FuQin~1,LIU DunYi~2,SHI YuRuo~2 & XIE HangQiang~2 1 institute of Geology and Geophysics,chinese academy of sciences,beijing 100029,China 2 beijing SHRIMP Centre,institute of Geology,chinese academy of geological sciences,beijing 10003 7,China

Chaotiehe gabbroic intrusion in the eastern part of Liaoning Province was dated by the zircon SHRIMP U-Pb *** results gave an emplacement age of 126±4 Ma,indicating that the intrusion thus formed during the lithospheric thinning of the North China Craton(NCC) in the Early Cretaceous rather than in a rifting setting during the Paleoproterozoic as previously *** gabbroic intrusion contains abundant old zircons with Paleoproterozoic(2.10-2.46 Ga and ca.1.87 Ga) and Neoproterozoic (747-969 Ma) *** Paleoproterozoic zircons were probably derived from NCC itself,whereas the Neoproterozoic ones were likely from materials of the Yangtze Craton that had previously been subducted beneath *** geochrono logical dates are of important implications for understanding the Mesozoic crustal evolution of NCC.

关键词： Gabbro zircon SHRIMP age eastern Liaoning Province North China Craton

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Seismic and geological evidence of hidden faults in the Yinpan Reservoir area based on a dense seismic array

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Science China Earth sciences 2024年第7期67卷 2401-2407页

作者： Guangyao YIN Huai zhang Liwen GONG Q ipeng BAI Yicun GUO Bing zhang Yaolin SHI Key Laboratoryof Earth System Numerical Modeling and Application(chinese academyof sciences) College of Earth and Planetary SciencesUniversity of Chinese Academy of SciencesBeijing 100049China Key Laboratory of Computational Geodynamics Chinese Academy of SciencesBeijing 100049China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai 519080China beijing Yanshan Critical Zone National Field Scientific Observation and Research Station Beijing 101408China Chongqing Earthquake Agency Chongqing 401147 China institute of Earthquake Forecasting China Earthquake AdministrationBeijing 100036China Hangzhou Applied Acoustics Research institute Hangzhou 311100China State Key Laboratory of Geodesy and Earths Dynamics Innovation Academy for Precision Measurement Science and TechnologyCASWuhan 430077China

*** November 23,2017,an M_(S)5.0 earthquake occurred in Wulong,Chongqing,China,resulting in tens of casualties and considerable economic ***,the epicenter of this earthquake was located in the transition zone from the... 详细信息

关键词： earthquake southeast seismic

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Tectono-chronologic constraints on a Mesozoic slip and thrust belt in the eastern Jiaodong Peninsula

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Science China Earth sciences 2007年第1期50卷 25-32页

作者： zhang HongYuan1,2, HOU QuanLin3 & CAO DaiYong 4 1 institute of Geology, chinese academy of geological sciences, beijing 100037, China 2 State Key Laboratory of geological Processes and mineral Resources, China University of Geosciences, beijing 100083, China 3 Graduate School of China Acacemy of sciences, beijing 100039, China 4 Key Laboratory of Coal Resources (CUMT), Ministry of Education, beijing 100083, China 1. institute of Geology Chinese Academy of Geological Sciences Beijing 100037 China 2. State Key Laboratory of geological Processes and mineral Resources China University of Geosciences Beijing 100083 China 3. Graduate School of China academy of sciences Beijing 100039 China 4. Key Laboratory of Coal Resources (CUMT) Ministry of Education Beijing 100083 China

A major slip and thrust belt within the eastern Jiaodong Peninsula is located at the eastern terminal of the Qinling-Dabie-Sulu orogenic belt between the Sino-Korea Block and Yangtze Block. Although a lot of isotope chronologic data have been obtained regionally, little structural chronological research has been conducted in this region and this paper corrects that. Syn-deformational minerals were system-atically selected from samples of the NE-ENE trending transpressional shear zones and transpres-sional nappes and carefully analysed using 40Ar/39Ar methods. Two tectonic events were defined with the first event resulting from early movement of transpressional nappes around 190 Ma ago. This ac-cords with the period of syn-orogenic sinistral slip of the Tan-Lu faults and clockwise shear in the Eastern Qinling-Tongbaishan part of the Qinling-Dabie-Sulu orogenic belt. The second event involved strikeslip thrust movement of deep shear zones between 130Ma and 120Ma. This resulted from the onset of Mesozoic tectonic conversion in the eastern Jiaodong Peninsula. The sinistral strikeslip-thrusting in Jiaodong Peninsula and the extensional tectonism (toward ESE) in Liaodong Peninsula probably resulted in the clockwise rotation of Korea Peninsula in late Mesozoic.

关键词： the eastern Jiaodong Peninsula tectono-chronology 40Ar/39Ar strikeslip and thrust belt.

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Cyclic rapid warming on centennial-scale revealed by a 2650-year stalagmite record of warm season temperature

Cyclic rapid warming on centennial-scale revealed by a 2650-...

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中国科学院地质与地球物理研究所2003学术年会

作者： Ming Tan and Tungsheng Liu institute of Geology and Geophysics,chinese academy of sciences,beijing,China State Key Laboratory of Loess and Quaternary Geology,institute of Earth Environment,chinese academy of sciences, Shaanxi,China Juzhi Hou and Xiaoguang Qin institute of Geology and Geophysics,chinese academy of sciences,beijing,China Hucai zhang Department of Geographical sciences,Lanzhou University,Lanzhou,China Tieying Li beijing geological Survey institute,beijing.China

A 2650-year(BC665-AD1985) warm season(MJJA: ***,July,August) temperature reconstruction is derived from a correlation between thickness variations in annual layers of a stalagmite from Shihua Cave,beijing, China and instrumental meteorological records. Observations of soil CO and drip water suggest that the temperature signal is amplified by the soil-organism-CO system and recorded by the annual layer *** reconstruction reveals that centennial-scale rapid warming occurred repeatedly following multicentenial cooling trends during the last *** results correlate with different records from the Northern Hemisphere, indicating that the periodic alternation between cool and warm periods on a sub-millennial scale had a subhemispherical influence.

关键词： 3344 Meteorology and Atmospheric Dynamics:Paleoclimatology 9320 Information Related to Geographic Region:Asia 4863 Oceanography:Biological and Chemical:Sedimentation.

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Groundwater Systems and Eco-hydrological Features in the Main Karst Regions of China

Groundwater Systems and Eco-hydrological Features in the Mai...

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作者： LU Yaoru~(1,*),zhang Feng’e~2,LIU Changli~2,TONG Guobang~2 and zhang Yun~2 1 chinese academy of geological sciences,beijing 100037 2 institute of Hydrogeology and Environmental Geology, chinese academy of geological sciences,Shijiazhuang,Hebei 050061

Different karst water features and related water resources are present both in southern and northern *** are over 3,358 well-developed karst ground river systems with total discharges in the dry season of about 420×10 m in the main karst regions in the southern part of China. Exploitation rates are only 8-15%.Over 100 larger karst spring systems in the main karst regions of northern China cover a catchment area from 500 km to over 4,000 km,of which the average discharge appears to be from about 1 m/s to 13 m/s and the exploitation rates are 70-80%.Six aspects of the ecohydrological features of some typical karst regions in China comprising water environment,ecological features,materials and structures between parent rock and soil,bio-geological processes and palynological studies(spore-pollen) are *** evaluation of eco-geology and rocky desertification in the karst regions should be based on the main karst ecological conditions as well as artificial,i.e.,man-made impacts.

关键词： karst water resources spore-pollen eco-hydrogeology geo-ecology

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