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In situ thermoresponsive supramolecular assembly for switchable circularly polarized luminescence

Science China Chemistry 2024年第7期67卷 2362-2372页

作者： Menghan Pan Gong Zhang Haotian Ma Xiaoxiao Cheng Jieai Li Wei Zhang state and Local Joint Engineering laboratory for Novel Functional Polymeric Materials Jiangsu Engineering Laboratory of Novel Functional Polymeric MaterialsSuzhou Key Laboratory of Macromolecular Design and Precision SynthesisCollege of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123China School of Chemical and environmental Engineering Anhui Polytechnic UniversityWuhu 241000China

The dynamic regulation of circularly polarized luminescence(CPL)holds profound significance in various fields,such as highlevel information storage and *** we developed a chiral amphiphilic molecule,CPSB-GLU-PEG350(CGP),composed of aggregation-induced emission(AIE)chromophores(Z)-4-(1-cyano-2-phenylvinyl)benzoic acid(CPSB),a chiral linker Glutamic acid and polyethylene glycol(PEG)thermoresponsive *** the self-assembled supramolecular system formed by CGP,we have achieved in-situ temperature-responsive chiral structures,facilitating the thermal control switch of the CPL *** dynamics simulations demonstrate the distinct behaviors of AIE and PEG units during the temperature-variable assembly ***,by co-assembling achiral dye molecules with CGP,we have expanded the color range of the temperature-responsive CPL assembly system in situ and confirmed the occurrence of circularly polarizedF?rster resonance energy transfer(C-FRET)phenomenon in this process,which successfully enriched the strategies for in-situ CPL control in aqueous *** addition,the contactless radiative energy transfer of CPL can also be realized in this system,exhibiting more flexible temperature regulation of the CPL *** study provides a convenient and universal strategy for the construction of dynamically smart chiroptical materials.

关键词： circularly polarized luminescence in-situ thermoresponsive supramolecular assembly energy transfer

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Towards carbon neutrality of calcium carbide-based acetylene production with sustainable biomass resources

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Green Energy & Environment 2024年第6期9卷 1068-1078页

作者： Peng Jiang Guanhan Zhao Hao Zhang Tuo Ji Liwen Mu Xiaohua Lu Jiahua Zhu state key laboratory of Materials-oriented Chemical Engineering College of Chemical EngineeringNanjing Tech UniversityNanjing211816China

Acetylene is produced from the reaction between calcium carbide(CaC_(2))and water,while the production of CaC_(2) generates significant amount of carbon dioxide not only because it is an energy-intensive process but also the raw material for CaC_(2) synthesis is from ***,a comprehensive biomass-to-acetylene process was constructed that integrated several units including biomass pyrolysis,oxygen-thermal CaC_(2) fabrication and calcium *** comparison,a coal-to-acetylene process was also established by using coal as *** carbon efficiency,energy efficiency and environmental impacts of the bio-based calcium carbide acetylene(BCCA)and coal-based calcium carbide acetylene(CCCA)processes were systematically ***,the environmental impacts were further evaluated by applying thermal integration at system level and energy substitution in CaC_(2) *** though the BCCA process showed lower carbon efficiency and energy efficiency than that of the CCCA process,life cycle assessment demonstrated the BCCA(1.873 kgCO_(2eq) kg-prod^(-1))a lower carbon footprint process which is 0.366 kgCO_(2eq) kg-prod^(-1) lower compared to the CCCA *** sustainable energy(biomass power)substitution in CaC_(2) furnace,an even lower GWP value of 1.377 kgCO_(2eq) kg-prod^(-1) can be achieved in BCCA *** work performed a systematic analysis on integrating biomass into industrial acetylene production,and revealed the positive role of biomass as raw material(carbon)and energy supplier.

关键词： Biomass pyrolysis CO_(2)mitigation Calcium carbide Acetylene Calcium loop

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“Mega-sandwich pattern”of interdecadal precipitation variations and its regional manifestation in the Asian summer precipitation region

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Science Bulletin 2024年第17期69卷 2656-2659页

作者： Fahu Chen Lingxin Huang Dianbin Cao Jie Chen Shengqian Chen Shuai Ma Tianjun Zhou Alpine Paleoecology and Human Adaptation Group(ALPHA) State Key Laboratory of Tibetan Plateau Earth SystemEnvironment and Resources(TPESER)Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China key laboratory of Western China’s environmental systems(Ministry of Education) College of Earth and Environmental SciencesLanzhou UniversityLanzhou 730000China state key laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China University of the Chinese Academy of Sciences Beijing 100049China

The Tibetan Plateau(TP)is an important link between the South Asian monsoon(SAM)region,the East Asian monsoon region,and the drylands of Central *** changes within these regions are dominated by both the monsoon and the *** has prompted the scientific community to adopt a broad spatial perspective,proposing concepts such as the"Pan-Third Poleoor"Asian summer precipitationo,to better understand the regional climate dynamics,their driving mechanisms,and the resulting major ecological and environmental impacts.

关键词： Asian monsoon precipitation

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Generating ^(1)O_(2) and Co^(IV)=O through efficient peroxymonosulfate activation by ZnCo_(2)O_(4)nanosheets for pollutant control

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Nano Research 2024年第9期17卷 8025-8035页

作者： Xiaoke Zhang Yangyang Zhang Jiaqi Tian Yadan Guo Zhongkui Zhou Zhongyi Liu Zaiwang Zhao Bin Liu Jun Li College of Chemistry Henan Institute of Advanced TechnologyZhengzhou UniversityZhengzhou 450052China state key laboratory of Coking Coal resources Green Exploitation Zhengzhou UniversityZhengzhou 450001China School of Water resources and environmental Engineering East China University of TechnologyNanchang 330013China Department of Materials Science and Engineering City University of Hong KongHong Kong 999077China College of Energy Materials and Chemistry College of Chemistry and Chemical EngineeringInnerMongolia UniversityHohhot 010070China

Heterogeneous advanced oxidation processes(AOPs)based on non-radical reactive species are considered as a powerful technology for wastewater purification due to their long half-lives and high adaptation in a wide pH ***,we fabricate surface Co defect-rich spinel ZnCo_(2)O_(4)porous nanosheets,which can generate≡CoIV=O and ^(1)O_(2) over a wide pH range of 3.81-10.96 by the formation of amphoteric≡Zn(OH)2 in peroxymonosulfate(PMS)activation *** functional theory(DFT)calculations show Co defect-rich ZnCo_(2)O_(4)possesses much stronger adsorption ability and more electron transfer to ***,the adsorption mode changes from terminal oxygen Co-O-Co to Co-O,accelerating the polarization of adjacent oxygen,which is beneficial to the generation of≡CoIV=O and Generating ^(1)O_(2) .Co defect-rich ZnCo_(2)O_(4)porous nanosheets exhibit highly active PMS activation activity and stability in p-nitrophenol(PNP)degradation,whose toxicity of degradation intermediates is significant *** Co defect-rich ZnCo_(2)O_(4)nanosheet catalyst sponge/PMS system achieved stable and efficient removal of PNP with a removal efficiency higher than 93%over 10 *** work highlights the development of functional catalyst and provides an atomic-level understanding into non-radical PMS activation process in wastewater treatment.

关键词： advanced oxidation processes ZnCo_(2)O_(4)nanosheets peroxymonosulfate activation CoIV=O,wastewater treatment

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Dating Kimberlite Using Apatite U-Pb Geochronology: A Case Study from Diamond-Bearing Dikes in South China

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Journal of Earth Science 2024年第3期35卷 1059-1062页

作者： Jiawei Zhang Huan Wang Defeng He Yuhua Zhu Kun Wang Yuan Qiu Guizhou Geological Survey Bureau of Geology and Mineral Exploration and Development of Guizhou ProvinceGuiyang 550081China College of resources and environmental Engineering Guizhou UniversityGuiyang 550025China Yanduzhongshi Geological Analysis laboratory Ltd. Beijing 100080China state key laboratory of Ore Deposit Geochemistry Institute of GeochemistryChinese Academy of SciencesGuiyang 550081China

Kimberlite,one of the deepest known magmatic rocks on Earth,offers valuable glimpses into the deep mantle composition(Woodhead et al.,2019),craton structure(Gardiner et al.,2020),global geodynamic variation(Tappe et al.,2018),and diamond formation(Giuliani et al.,2023).The accurate determination of the emplacement of this special rock is crucial for revealing such ***,dating kimberlite is challenging due to its silica-poor,volatile-rich,strongly altered,and hybrid nature(Mitchell et al.,2019).Zircon is unsuitable for dating kimberlite and related rocks due to its preference for crystallizing in intermediate to felsic melts(Gervasoni et al.,2016)rather than silica-poor *** if present,zircon is prone to Pb loss through hydrothermal alteration(Zi et al.,2022)in a volatile-rich system like kimberlitic magmas.

关键词： dating magma alteration

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The Earth Summit Mission-2022:Successful ozone soundings contribute to source identification in the north *** region

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Journal of environmental Sciences 2024年第2期136卷 412-421页

作者： Jinqiang Zhang Chunxiang Ye Yuejian Xuan Zhixuan Bai Weili Lin Dan Li Lingkun Ran Baofeng Jiao YaomingMa Weiqiang Ma Nan Yao Yunshu Zeng Daren Lv Tong Zhu key laboratory of Middle Atmosphere and Global Environment Observation Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China College of environmental Sciences and Engineering Center for Environment and HealthPeking UniversityBeijing 100871China key laboratory of Ecology and Environment in Minority Areas(Minzu University of China) National Ethnic Affairs CommissionBeijing 100081China key laboratory of Cloud-Precipitation Physics and Severe Storms Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China Land-Atmosphere Interaction and Its Climatic Effects Group State Key Laboratory of Tibetan Plateau Earth SystemResources and Environment(TPESRE)Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China College of Atmospheric Science Lanzhou UniversityLanzhou 730000China National Observation and Research Station for Qomolongma Special Atmospheric Processes and environmental Changes Dingri 858200China Kathmandu Center of Research and Education Chinese Academy of SciencesBeijing 100101China China-Pakistan Joint Research Center on Earth Sciences Chinese Academy of SciencesIslamabad 45320Pakistan Electronic Engineering College Chengdu University of Information TechnologyChengdu 610225China

As part of“The Earth Summit Mission-2022”during the second Tibetan Plateau Scientific Expedition and Research(STEP)in April and May 2022,we conducted the ozone sounding experiment(an ozonesonde mated to a radiosonde)at *** Base Camp(MQBC;86.85°E,28.14°N;5200 m),a location at an extremely high altitude.A total of ten sounding profiles were obtained between April 30 and May 06,2022,of which seven profiles were above35 km in altitude,with a maximum detection altitude up to 39.0 *** study presents the temporal variation and vertical distributions of atmospheric temperature,humidity,and ozone during the MQBC *** averaged ozone concentration was high(68.3 ppbv)at the surface and then increased smoothly until peaking(~110 ppbv)in the middle troposphere(approximately 10 km),and afterward,the ozone concentration increased rapidly from the upper troposphere to a maximum of~10 ppmv at~30 *** enhanced ozone concentration in the middle troposphere was associated with the blocking high pressure,and transport from the southern flank of the Himalayas occurred during the campaign *** average total ozone column was 291.9±21.4 DU for the seven profiles exceeding 35km in *** ozonesonde measurements were also compared with the vertical ozone profiles retrieved from the space-borne ozone products from the Microwave Limb Sounder(MLS)onboard the Aura satellite and the Atmospheric Infrared Sounder(AIRS)onboard the Aqua satellite.

关键词： Ozone soundings Mt.Qomolangma Vertical ozone structure Ozone source Satellite data

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An Overview on the Composition and Age of Upper Crust of Proto-Tethyan Lajishan Intra-oceanic Arc,NE Tibet Plateau

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Acta Geologica Sinica(English Edition) 2024年第2期98卷 285-302页

作者： FU Changlei HE Xiaohu YAN Zhen Jonathan CAITCHISON XIAO Wenjiao WANG Bingzhang LI Wufu LI Yusen SinoProbe laboratory Institute of GeologyChinese Academy of Geological SciencesBeijing 100037China key laboratory of the Northern Qinghai–Tibet Plateau Geological Processes and Mineral resources Qinghai Geological Survey InstituteXining 810012China Department of Geology School of Earth SciencesYunnan UniversityKunming 650091China School of Earth and environmental Sciences University of QueenslandBrisbane 4072Australia Xinjiang Institute of Ecology and Geography Chinese Academy of SciencesUrumqi 830011China state key laboratory of Lithospheric Evolution Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China School of Earth Science and resources China University of GeosciencesBeijing 100083China

Identification and anatomy of oceanic arcs within ancient orogenic belt are significant for better understanding the tectonic framework and closure process of paleo-ocean *** article summarizes the geological,geochemical,and geochronological characteristics of upper crust of Proto-Tethyan Lajishan intra-oceanic arc and provides new data to constrain the subduction evolution of the South Qilian *** intra-oceanic arc volcanic rocks,including intermediate-mafic lava,breccia,tuff,and minor felsic rocks,are distributed along southern part of the Lajishan ophiolite *** and isotopic compositions indicate that the intermediate-mafic lava were originated from depleted mantle contaminated by sediment melts or hydrous fluids,whereas the felsic rocks were likely generated by partial melting of juvenile mafic crust in intra-oceanic arc *** from felsic rocks yield consistent and concordant ages ranging from 506 to 523 Ma,suggesting these volcanic rocks represent the relicts of upper crust of the Cambrian intra-oceanic *** with the Cambrian forearc ophiolite and accretionary complex,we suggest that the Cambrian intra-oceanic arc in the Lajishan ophiolite belt is belonging to the intra-oceanic arc system which was generated by south-directed subduction in the South Qilian Ocean at a relatively short interval between approximately 530 and 480 Ma.

关键词： volcanic rocks intra-oceanic arc U-Pb age Lajishan ophiolite belt South Qilian Ocean Proto-Tethyan realm

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Adaptive Memetic Algorithm with Dual-Level Local Search for Cooperative Route Planning of Multi-Robot Surveillance systems

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Complex system Modeling and Simulation 2024年第2期4卷 210-221页

作者： Hao Cheng Jin Yi Wei Xia Huayan Pu Jun Luo the state key laboratory of Mechanical Transmission for Advanced Equipment Chongqing UniversityChongqing 400044China the Department of Electronics Information and BioengineeringPolitecnico di MilanoMilano 20133Italy

The heightened autonomy and robust adaptability inherent in a multi-robot system have proven pivotal in disaster search and rescue,agricultural irrigation,and environmental *** study addresses the coordination of multiple robots for the surveillance of various key target positions within an *** involves the allocation of target positions among robots and the concurrent planning of routes for each *** tackle these challenges,we formulate a unified optimization model addressing both target allocation and route ***,we introduce an adaptive memetic algorithm featuring dual-level local search *** algorithm operates independently among and within robots to effectively solve the optimization problem associated with *** proposed method’s efficacy is substantiated through comparative numerical experiments and simulated experiments involving diverse scales of robot teams and different target positions.

关键词： multi-robot system surveillance memetic algorithm

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Purple acid phosphatase promoted hydrolysis of organophosphate pesticides in microalgae

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environmental Science and Ecotechnology 2024年第2期18卷 137-149页

作者： Xiang Wang Guo-Hui He Zhen-Yao Wang Hui-Ying Xu Jin-Hua Mou Zi-Hao Qin Carol Sze Ki Lin Wei-Dong Yang Yalei Zhang Hong-Ye Li key laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes College of Life Science and TechnologyJinan UniversityGuangzhou510632China School of Energy and Environment City University of Hong KongTat Chee AvenueKowloonHong Kong Centre for Technology in Water and Wastewater School of Civil and Environmental EngineeringUniversity of Technology SydneyUltimoNSW2007Australia Southern Marine Science and Engineering Guangdong laboratory(Guangzhou) Guangzhou510000China state key laboratory of Pollution Control and resources Reuse College of Environmental Science and EngineeringTongji UniversityShanghai200092China

When organophosphate pesticides(OPs)are not used and handled in accordance with the current rules and standards,it results in serious threats to the aquatic environment and human *** tricornutum is a prospective microalgae-based system for pollutant removal and carbon *** engineered ***,designated as the OE line(endogenously expressing purple acid phosphatase 1[PAP1]),can utilize organic phosphorus for cellular ***,the competencies and mechanisms of the microalgae-based system(namely the OE line of ***)for metabolizing OPs remain to be *** this study,the OE line exhibited the effective biodegradation competencies of 72.12%and 68.2%for 30 mg L^(-1)of dichlorvos and 50 mg L^(-1)of glyphosate,accompanied by synergistic accumulations of biomass(0.91 and 0.95 g L^(-1))and lipids(32.71%and 32.08%),***,the biodiesel properties of the lipids from the OE line manifested a high potential as an alternative feedstock for microalgae-based biofuel production.A plausible mechanism of OPs biodegraded by overexpressed PAP1 is that sufficient inorganic P for adenosine triphosphate and concurrent carbon flux for the reduced form of nicotinamide adenine dinucleotide phosphate biosynthesis,which improved the OP tolerance and biodegradation competencies by regulating the antioxidant system,delaying programmed cell death and accumulating lipids via the upregulation of related *** sum up,this study demonstrates a potential strategy using a genetically engineered strain of *** to remove high concentrations of OPs with the simultaneous production of biomass and biofuels,which might provide novel insights for microalgae-based pollutant biodegradation.

关键词： Biodegradation Lipid accumulation Organophosphate pesticide Phaeodactylum tricornutum Purple acid phosphatase

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TP-PROFILE: Monitoring the Thermodynamic Structure of the Troposphere over the Third Pole

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Advances in Atmospheric Sciences 2024年第6期41卷 1264-1277页

作者： Xuelong CHEN Yajing LIU Yaoming MA Weiqiang MA Xiangde XU Xinghong CHENG Luhan LI Xin XU Binbin WANG Land-Atmosphere Interaction and its Climatic Effects Group State Key Laboratory of Tibetan Plateau Earth SystemEnvironment and Resources(TPESER)Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China National Observation and Research Station for Qomolongma Special Atmospheric Processes and environmental Changes Dingri 858200China China-Pakistan Joint Research Center on Earth Sciences Chinese Academy of SciencesIslamabad 45320Pakistan College of Atmospheric Science Lanzhou UniversityLanzhou 730000China Kathmandu Center of Research and Education Chinese Academy of SciencesBeijing 100101China state key laboratory of Disastrous Weather China Academy of Meteorological SciencesBeijing 100081China

Ground-based microwave radiometers(MWRs)operating in the K-and V-bands(20–60 GHz)can help us obtain temperature and humidity profiles in the *** from some soundings from local meteorological observatories,the tropospheric atmosphere over the Tibetan Plateau(TP)has never been continuously *** part of the Chinese Second Tibetan Plateau Scientific Expedition and Research Program(STEP),the Tibetan Plateau Atmospheric Profile(TPPROFILE)project aims to construct a comprehensive MWR troposphere observation network to study the synoptic processes and environmental changes on the *** initiative has collected three years of data from the MWR *** paper introduces the data information,the data quality,and data *** applications of the data obtained from these MWRs were also *** comparisons of MWR against the nearest radiosonde observation demonstrate that the TP-PROFILE MWR system is adequate for monitoring the thermal and moisture variability of the troposphere over the *** continuous temperature and moisture profiles derived from the MWR data provide a unique perspective on the evolution of the thermodynamic structure associated with the heating of the *** TP-PROFILE project reveals that the low-temporal resolution instruments are prone to large uncertainties in their vapor estimation in the mountain valleys on the TP.

关键词： microwave radiometer thermodynamic structure vertical profile Tibetan Plateau

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