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Scientific objectives and payload configuration of the Chang'E-7 mission

National Science Review 2024年第2期11卷 285-300页

作者： Chi Wang Yingzhuo Jia Changbin xue Yangting Lin Jianzhong Liu Xiaohui Fu Lin xu Yun Huang Yufen Zhao Yigang xu Rui Gao Yong Wei Yuhua Tang Dengyun Yu Yongliao Zou State Key Laboratory of Space Weather National Space Science Center Chinese Academy of Sciences National Space Science Center Chinese Academy of Sciences institute of Geology and Geophysics Chinese Academy of Sciences institute of geochemistry Chinese Academy of Sciences Shandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment School of Space Science and Physics Institute of Space SciencesShandong University institute of Drug Discovery Technology Ningbo University State Key Laboratory of Isotope geochemistry Guangzhou Institute of Geochemistry Chinese Academy of Sciences School of Earth Science and Engineering Sun Yat-sen University Lunar Exploration and Space Engineering Center china Aerospace Science and Technology Corporation

As the cornerstone mission of the fourth phase of the chinese Lunar Exploration Program, Chang'E-7(CE-7) was officially approved, and implementation started in 2022, including a main probe and a communication relay satellite. The main probe, consisting of an orbiter, a lander, a rover and a mini-flying probe, is scheduled to be launched in 2026. The lander will land on Shackleton crater's illuminated rim near the lunar south pole, along with the rover and mini-flying probe. The relay satellite(named Queqiao-2) will be launched in February 2024 as an independent mission to support relay communication during scientific exploration undertaken by Chang'E-4, the upcoming Chang'E-6 in 2024 and subsequent lunar *** CE-7 mission is mainly aimed at scientific and resource exploration of the lunar south pole. We present CE-7's scientific objectives, the scientific payloads configuration and the main functions for each scientific payload with its key technical specifications.

关键词： Chang’ E-7 scientific objectives scientific payloads

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The effect of thermal treatment on the transformation and transportation of arsenic and cadmium in soil

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Journal of Environmental sciences 2024年第11期145卷 205-215页

作者： Fengping Zhou Meina Guo Nan Zhao Qianting xu Tuokun Zhao Weihua Zhang Rongliang Qiu Guangdong Provincial Key Laboratory of Environmental Pollution and Remediation Technology Guangdong Provincial Engineering Research Center for Heavy Metal Contaminated Soil RemediationSchool of Environmental Science and EngineeringSun Yat-sen UniversityGuangzhou 510275China Shenzhen Research institute Sun Yat-sen UniversityShenzhen 518057China National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South china Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and ManagementInstitute of Eco-environmental and Soil SciencesGuangdong Academy of SciencesGuangzhou 510650China Guangdong Provincial Key Laboratory of Agricultural&Rural Pollution Abatement and Environmental Safety School of Natural Resources and EnvironmentSouth China Agricultural UniversityGuangzhou 510642China Ganjiang Innovation academy Chinese Academy of SciencesGanzhou 341000China

Thermal treatment can effectively decontaminate soils but alter their *** research mainly focused on volatile organic compounds andmetals,***,neglecting nonvolatile metal(loid)*** study aimed to investigate Cd and As transformation during aerobic and anaerobic *** results showed that both aerobic and anaerobic calcination increased soil pH by reducing soil organic matter(SOM)content,which also influenced the cation exchange capacity(CEC)and the leaching behavior of Cd and As in the *** total concentrations of Cd and As in the calcined soils varied depending on the calcination temperature and *** the aerobic calcination temperature exceeded 700℃,Cd volatilized as CdCl_(2),while anaerobic calcination at relatively low temperatures(600℃)involved reductive reactions,resulting in the formation of metallic Cd with a lower boiling ***,As volatilized at 800℃aerobically and 600℃*** formation of As-based minerals,particularly Ca3(AsO4)2,hindered its gasification,whereas anaerobic calcination promoted volatilization efficiency through the generation of C-As(III)based gaseous components with lower boiling *** trends were observed in the TCLP-extractable Cd and As contents of the calcined *** 70%of TCLP-extractable Cd contents were suppressed after thermal treatment,attributed to the elevated pH and reduced CEC of the soil,as well as ***,TCLP-extractable As contents increased with elevated temperatures,likely due to the desorption of AsO43−and re-adsorption of gaseous As2O3 during *** findings have implications for assessing the environmental impact of thermal treatment and provide insights for remediation strategies concerning Cd and As-contaminated soils.

关键词： Thermal treatment Soil Cadmium Arsenic Transformation

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Synthetic host-guest pairs as novel bioorthogonal tools for pre-targeting

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chinese Chemical Letters 2024年第2期35卷 44-56页

作者： Yan-Long Ma Shi Yan Xiong-Jie xu Hua Cao Ruibing Wang School of Chemistry and Chemical Engineering and Guangdong Cosmetics Engineering & Technology Research Center Guangdong Pharmaceutical UniversityZhongshan 528458China State Key Laboratory of Quality Research in chinese Medicine and the Institute of Chinese Medical ScienceUniversity of MacaoMacao 999078China

Due to its simplicity, high efficiency, and chemo-selectivity, bioorthogonal chemistry has shown a great application potential in ***, four bioorthogonal pairs as targeting tools, including (strept)avidin/biotin, antibody/antigen, oligonucleotide hybridization and IEDDA tools, have been developed and applied in targeted ***, all of these tools still suffer from some limitations, such as difficult modification, biochemical fragility and larger molecular weight for biological association tools, as well as chemical instability for IEDDA *** host-guest pairs with relatively small molecular sizes not only possess strong chemical stability, but also have the features of fast conjugation rate, tunable binding affinity , easy modification, and high ***, they can be used as a novel non-covalent bioorthogonal tool for *** order to further promote the development of host-guest pairs as novel bioorthogonal tools for pre-targeted delivery, we firstly calculate their conversion rate to make researcher aware of their unique advantages;next, we summarize the recent research progress in this *** future perspectives and limitations of these unique tools will be *** review will provide a systemic overview of the development of synthetic host-guest pairs as novel bioorthogonal tools for pre-targeting, and may serve as a “go for” resort for researchers who are interested in searching for new synthetic tools to improve pre-targeting.

关键词： Bioorthogonal chemistry Synthetic host-guest pairs Pre-targeting Molecular recognition Biomedical applications

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光照下叶黄素循环与非辐射能量耗散的关系

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生物化学与生物物理进展 2002年第1期29卷 91-93页

作者：董高峰阳成伟徐志防陈贻竹中国科学院华南植物研究所广州510650

离体玉米叶片在光照下叶黄素循环与非辐射能量耗散发生明显变化 .随着光强提高 ,玉米黄质 (Z)含量显著上升 ,单环氧玉米黄质 (A)含量在中低光强时增加但在较强光照下略有降低 ,紫黄质 (V)含量则呈下降趋势 ,但叶黄素循环组分库V +A +Z... 详细信息

离体玉米叶片在光照下叶黄素循环与非辐射能量耗散发生明显变化 .随着光强提高 ,玉米黄质 (Z)含量显著上升 ,单环氧玉米黄质 (A)含量在中低光强时增加但在较强光照下略有降低 ,紫黄质 (V)含量则呈下降趋势 ,但叶黄素循环组分库V +A +Z上升幅度不大 ;相同条件下非辐射能量耗散增强 ,表现为非光化学猝灭荧光参数 (NPQ)明显上升 ,同时Fv/Fm 下降 .分析表明 ,(Z +0 5A) / (V +A +Z)与NPQ呈明显正相关 ,而与Fv/Fm 呈显著负相关 ,(V +0 5A) / (V +A +Z)则与之相反 .由此推测 ,离体条件下玉米叶片中Z的环氧化和V的脱环氧化明显与非辐射能量耗散和PSⅡ光能转化过程相关 .

关键词：叶黄素循环非辐射能量耗散光照玉米

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Atherosclerosis-related biomarker PABPC1 predicts pan-cancer events

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Stroke & Vascular Neurology 2024年第2期9卷 108-125,I0001-I0005页

作者： Miao Lin Liubing Hu Si Shen Jiyue Liu Yanyan Liu Yixian xu Honglin Chen Kazuo Sugimoto Jianshuang Li Ikuo Kamitsukasa Takaki Hiwasa Hao Wang Anding xu Stroke Center The First Affiliated HospitalJinan UniversityGuangzhouChina Department of Anesthesiology The First Affiliated HospitalJinan UniversityGuangzhouChina The Biomedical Translational Research institute Faculty of Medical ScienceJinan UniversityGuangzhouChina Department of Radiology Medical Imaging CenterThe First Affiliated HospitalJinan UniversityGuangzhouChina Department of Biochemistry and Genetics Graduate School of MedicineChiba UniversityChibaJapan Department of Neurology Dongzhimen HospitalBeijing University of Chinese MedicineBeijingChina Department of Neurology Chiba Rosai HospitalChibaJapan Department of Neurology Chibaken Saiseikai Narashino HospitalChibaJapan Department of Neurological Surgery Graduate School of MedicineChiba UniversityChibaJapan

Background Atherosclerosis(AS)and tumours are the leading causes of death worldwide and share common risk factors,detection methods and molecular ***,searching for serum markers shared by AS and tumours is beneficial to the early diagnosis of *** The sera of 23 patients with AS-related transient ischaemic attack were screened by serological identification of antigens through recombinant cDNA expression cloning(SEREX),and cDNA clones were *** function enrichment analysis was performed on cDNA clones to identify their biological pathways and determine whether they were related to AS or ***,gene–gene and protein–protein interactions were performed and AS-associated markers would be *** expression of AS biomarkers in human normal organs and pan-cancer tumour tissues were ***,immune infiltration level and tumour mutation burden of various immune cells were *** curves analysis could show the expression of AS markers in *** AS-related sera were screened by SEREX,and 83 cDNA clones with high homology were *** functional enrichment analysis,it was found that their functions were closely related to AS and tumour *** multiple biological information interaction screening and the external cohort validating,poly(A)binding protein cytoplasmic 1(PABPC1)was found to be a potential AS *** assess whether PABPC1 was related to pan-cancer,its expression in different tumour pathological stages and ages was *** AS-associated proteins were closely related to cancer immune infiltration,we investigated and found that PABPC1 had the same role in ***,analysis of Kaplan-Meier survival curves revealed that high PABPC1 expression in pan-cancer was associated with high risk of *** Through the findings of SEREX and bioinformatics pan-cancer analysis,we concluded that PABPC1 might serve as a potential biomarker for the

关键词： diagnosis cancer organs

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HT-6M托卡马克装置杂质输运

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物理学报 2003年第8期52卷 1970-1978页

作者：徐伟万宝年谢纪康广州大学物理系广州510400 中国科学院等离子体物理研究所合肥230031

利用多道可见光谱探测系统和近紫外转镜系统测量了HT 6M托卡马克等离子体中杂质的时空分布 .建立完备的杂质输运程序 ,数值模拟碳、氧杂质在欧姆放电时的输运行为 ,得出了杂质的扩散和对流系数、不同电离态杂质离子密度、辐射功率密度... 详细信息

利用多道可见光谱探测系统和近紫外转镜系统测量了HT 6M托卡马克等离子体中杂质的时空分布 .建立完备的杂质输运程序 ,数值模拟碳、氧杂质在欧姆放电时的输运行为 ,得出了杂质的扩散和对流系数、不同电离态杂质离子密度、辐射功率密度和有效电荷数的空间分布 .分析低混杂波电流驱动 (LHCD)期间杂质行为 ,结果表明等离子体粒子约束、杂质约束和能量约束提高 ,辐射功率和有效电荷数减小 .

关键词： HT-6M托卡马克装置杂质输运扩散系数对流系数等离子体

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Prediction model on hydrolysis kinetics of phthalate monoester:A density functional theory study

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Journal of Environmental sciences 2024年第1期135卷 51-58页

作者： Tong xu Jingwen Chen Deming Xia Weihao Tang Jiansheng Cui Chun Liu Shuangjiang Li College of Environmental Science and Engineering Hebei University of Science and TechnologyShijiazhuang 050000China Key Laboratory of Industrial Ecology and Environmental Engineering(Ministry of Education) School of Environmental Science and TechnologyDalian University of TechnologyDalian 116024China National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South china Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and ManagementInstitute of Eco-environmental and Soil SciencesGuangdong Academy of SciencesGuangzhou 510650China

As primary degradation products of phthalate esters,phthalate monoesters(MPEs)have been widely detected in various aquatic environments and drawn growing toxicological *** kinetics that is of importance for assessing environmental persistence of chemicals remain elusive for ***,kinetics of base-catalyzed and neutral hydrolysis for 18 MPEs with different leaving groups was investigated by density functional theory *** indicate that MPEs with leaving groups having p Kaof<10 prefer dissociative transition *** are more persistent than their parents,and their hydrolysis half-lives were calculated to vary from 3.4 min to 79.2 years(p H=7–9).A quantitative structure-activity relationship model was developed for predicting the hydrolysis kinetics *** was found that p Kaof the leaving groups and electronegativity of the MPEs are key factors determining the hydrolysis *** work may lay a theoretical foundation for better understanding the chemical process that governs MPE persistence in aquatic environments.

关键词： Phthalate monoesters Phthalate esters Hydrolysis Density functional theory Quantitative structure-activity relationship

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Matrix metalloproteinase 2 contributes to adult eclosion and immune response in the small hive beetle,Aethina tumida

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Insect Science 2024年第3期31卷 733-747页

作者： Lixian Wu Yajing xu Liangbin Li Dainan Cao Fang Liu Hongxia Zhao Guangdong Key Laboratssory of Animal Conservation and Resource Utilization Guangdong Public Laboratory of Wild Animal Conservation and UtilizationInstitute of ZoologyGuangdong Academy of SciencesGuangzhouChina

During the pupal-adult eclosion process of holometabolous insects,the old cuticle is shed and replaced by a completely different new cuticle that requires tanning and expansion,along with extensive extracellular matrix(ECM)*** vertebrates,matrix metalloproteinases(MMPs),a class of zinc-dependent endopeptidases,play key roles in regulating the ECM that surrounds ***,little is known about these extracellular proteinases available in *** small hive beetle(SHB),Aethina tumida,is a widespread invasive parasite of honey *** this study,6 MMP homologs were identified in the SHB *** interference experiments showed that all 6 AtMmps are not required for the larval-pupal transition,only AtMmp2 was essential for pupal-adult eclosion in *** of AtMmp2 resulted in eclosion defects and wing expansion failure,as well as mortality within 3 d of adult *** analysis revealed that knockdown of AtMmp2 significantly increased expression of the Toll and Imd pathways,chitin metabolism,and cross-linking(such as the pro-phenoloxidase activating cascade pathway and the tyrosine-mediated cuticle sclerotization and pigmentation pathway).These data revealed evolutionarily conserved functions of Mmp2 in controlling adult eclosion and wing expansion,also provided a preliminary exploration of the novel function of regulating Toll and Imd pathways,as well as new insights into how MMPs regulate insect development and defense barriers.

关键词： Aethina tumida adult eclosion immune response matrix metalloproteinase RNAinterference

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Slow magnetic relaxation behaviors and diamagnetic dilution studies of a carboxyl bridged dinuclear dysprosium(Ⅲ) complex

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Journal of Rare Earths 2024年第11期42卷 2088-2096页

作者： Wenting Liu Yibo Qiu Weiqin xu Manli Cao Xin Deng Weiquan Lin School of Chemistry and Materials Science Guangdong University of Education School of Chemistry and Chemical Engineering/institute of Clean Energy and Materials Guangzhou University

By using a rigid bulky carboxylic ligand a-cyanocinnamic acid（CCA）,a dinuclear dysprosium（Ⅲ） complex [Dy2（CCA）6（MeOH）4]（1） was *** crystal X-ray crystallography reveals that the two eight-coordinate dysprosium ions are bridged by four deprotonated carboxyl groups,forming a centrosymmetric paddle-wheel-1ike *** magnetic property measurements indicate that complex 1 displays field-induced slow magnetic *** temperature-dependent relaxation times can be fitted using Orbach and Raman processes with parameters of n=2.8（2）,C=27（8） s-1/K~n,τ0=5（2） × 10-10s and Ueff=40（3） *** studies on the diamagnetic YⅢ-diluted analogue[Dy0.206Y1.794（CCA）6（MeOH）4]（2） reveal its slow magnetic relaxation behavior without external dc field and the antiferromagnetic coupling between the DyⅢions in *** on the obtained relaxation times of 2lead to the parameters of n=4.5（3）,C=0.7（2） s-1/K~n,τ0=2.8（2） × 10-9s and Ueff=38（2） *** results suggest that slow magnetic relaxation originates from the single-ion relaxation of DyⅢ***,the diamagnetic dilution can suppress other fast relaxation pathways at low temperature,on account of the elimination of magnetic coupling and dipolar *** initio calculations were then performed on the single DyⅢion species {YDy} and indicate that the first excited Kramers doublets（KDs）lie at ca.76 cm-1,which is slightly higher than the experimental *** intramolecular magnetic interactions were also calculated and indicate a weak ferromagnetic dipole-diploe magnetic interaction and an antiferromagnetic exchange coupling.

关键词： Diamagnetic dilution Dilanthanide complexes Rare earths Single-molecule magnets

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Thermal evolution and dynamic mechanism of the Sichuan Basin during the Early Permian-Middle Triassic

Thermal evolution and dynamic mechanism of the Sichuan Basin...

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中国科学院地质与地球物理研究所第11届（2011年度）学术年会

作者： HE LiJuan~(1*),xu HeHua~2 & WANG JiYang~1 1 State Key Laboratory of Lithospheric Evolution,institute of Geology and Geophysics,chinese academy of sciences,Beijing 100029,china 2 CAS Key Laboratory of the Marginal Sea Geology,South china Sea institute of Oceanology,chinese academy of sciences, guangzhou 510301,china

The Sichuan Basin,located in the western margin of Yangtze Plate,is one of the important oil-gas-bearing basins in china. During the Early Permian-Middle Triassic,the Sichuan Basin experienced regional lithospheric extension and Emeishan basalt activities,both of which influenced the basin development and thermal *** we simulated the thermal effects of lithospheric extension and the Emeishan mantle plume based on different geodynamical *** results indicated that the lithospheric temperature together with the basement heat flow was generally increasing with time due to *** the stretching factor was relatively small,the thinning of lithosphere,and consequently the thermal disturbance,was not great. The lithospheric extension yielded about 20%increase of the basement heat flow,with maximum value of 60-62 mW m in the Early *** plume model shows that the thermal evolution of the inner zone above the plume head was influenced greatly by plume *** the outer zone and its outside area where the Sichuan Basin is located were affected only *** basalts that had erupted in the southwestern basin might disturb the basin temperature significantly,although shortly and ***,the thermal history of the Sichuan basin during the Early Permian-Middle Triassic was controlled by the lithospheric extension,but locally it superimposed thermal effects of basalt activities in its southwestern area.

关键词： tectono-thermal evolution numerical modeling lithospheric extension Emeishan basalt Sichuan Basin

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