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Formation and growth of nanophase iron particles on the surface of Mercury revealed by experimental study

Acta Geochimica 2024年第4期43卷 774-784页

作者： Ronghua Pang Yang Li Chen Li Pengfei zhang Zhuang Guo Sizhe Zhao Han Yu Li Wang Chenxi Zhu Shuangyu Wang Kairui Tai Qinwei zhang Yuanyun Wen Rui Li Center for Lunar and Planetary Sciences Institute of GeochemistryChinese Academy of SciencesGuiyangChina University of Chinese Academy of Sciences BeijingChina Center for Excellence in Comparative Planetology Chinese Academy of SciencesHefeiChina Institute of Remote Sensing and Geographical Information System School of Earth and Space SciencesPeking UniversityBeijingChina State Key Laboratory of Lunar and Planetary Sciences Macao University of Science and TechnologyMacaoChina Faculty of Metallurgical and Energy Engineering Kunming University of Science and TechnologyKunmingChina State Key Laboratory of High Performance Ceramics and Superfi ne Microstructures Shanghai Institute of CeramicsChinese Academy of SciencesShanghaiChina Laboratory for Space Environment and Physical Sciences Harbin Institute of TechnologyHarbinChina Research Center for Planetary Science College of Earth ScienceChengdu University of TechnologyChengduChina Key Laboratory of Planetary Sciences Purple Mountain ObservatoryChinese Academy of SciencesNanjingChina

Space weathering is a primary factor in altering the composition and spectral characteristics of surface materials on airless ***,current research on space weathering focuses mainly on the Moon and certain types of *** particular,the impacts of meteoroids and micrometeoroids,radiation from solar wind/solar flares/cosmic rays,and thermal fatigue due to temperature variations are being *** weathering produces various transformation products such as melted glass,amorphous layers,iron particles,vesicles,and solar wind *** in turn lead to soil maturation,changes in visible and near-infrared reflectance spectra(weakening of characteristic absorption peaks,decreased reflectance,increased near-infrared slope),and alterations in magnetism(related to small iron particles),collectively termed the“lunar model”of space weathering *** to the Moon and asteroids,Mercury has unique spatial environmental characteristics,including more intense meteoroid impacts and solar thermal radiation,as well as a weaker particle radiation environment due to the global distribution of its magnetic ***,the lunar model of space weathering may not apply to *** studies have extensively explored the eff ects of micrometeoroid ***,this work focuses on the eff ects of solar-wind particle radiation in global magnetic-field distribution and on the weathering transformation of surface materials on Mercury under prolonged intense solar *** the utilization of highvalence state,heavy ion implantation,and vacuum heating simulation experiments,this paper primarily investigates the weathering transformation characteristics of the major mineral components such as anorthite,pyroxene,and olivine on Mercury’s surface and compares them to the weathering transformation model of the *** experimental results indicate that ion implantation at room temperature is insufficient to generate np-Fe^(0)directly but

关键词： Mercury Space weathering Np-Fe^(0) Solar thermal radiation Solar wind

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TCP-1,a novel peptide to diagnose early colon cancer

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Chinese Chemical Letters 2024年第3期35卷 226-233页

作者： Hang Yu Baoying Wen Min Huang Ru Feng Libin Pan Manyi Xu Hao Lin Lin Cong Sen zhang Yan Li Chi-Hin Cho Chongjing zhang Xiaoguang Chen Yan Wang State Key Laboratory of Bioactive Substances and Functions of Natural Medicines Institute of Materia MedicaChinese Academy of Medical SciencesBeijing 100050China School of Biomedical Sciences Faculty of MedicineThe Chinese University of Hong KongHong KongChina

A nine cyclic peptide(TCP-1)showed excellent specificity for colon ***-1 binds with human tumor tissues at early stages and mice tumor with diameters of 1-4 mm,suggesting that TCP-1 may be used for early diagnosis of colon *** mechanism of the targeted binding of TCP-1 to colon cancer was also studied using immunoprecipitation,LC-MS and *** screening and identifying of the possible binding target proteins of TCP-1,keratin,typeⅡcytoskeletal 5 was speculated to be the specific binding target protein of TCP-1 in human tumor *** studies were conducted to investigate the target-mediated drug disposition of the new tumor-specific peptide by LC-MS/*** tissue distribution study showed that TCP-1 was found only in colon tumors(the target site)in tumor mice did not bind to any other *** TCP-1 to tumor markedly increased its removal rate from blood circulation but mildly extended its staying time in *** tumor mice,a lower AUC of TCP-1(reduced by almost 35%)and 2-fold higher clearance were found compared to that of normal *** proposed metabolic pathway of TCP-1 in the kidney was also determined using LC-MS^(n)-*** high specificity and low toxicity of the peptide may be caused by its extremely tight binding to the *** applications for future clinical use,including MRI and PET/CT were also explored,and this research may promote the development of colon cancer diagnostic technology research and provide new ideas and technical routes for tumor diagnostic technology.

关键词： Colon cancer TCP-1 Peptide Cytokeratin 5 Pharmacokinetics/pharmacodynamics(PK/PD)

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Regulation of specific abnormal calcium signals in the hippocampal CA1 and primary cortex M1 alleviates the progression of temporal lobe epilepsy

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Neural Regeneration Research 2024年第2期19卷 425-433页

作者： Feng Chen Xi Dong Zhenhuan Wang Tongrui Wu Liangpeng Wei Yuanyuan Li Kai zhang Zengguang Ma Chao Tian Jing Li Jingyu Zhao Wei zhang Aili Liu Hui Shen Laboratory of Neurobiology School of Biomedical EngineeringTianjin Medical UniversityTianjinChina Institute for Translational Neuroscience the Second Affiliated Hospital of Nantong UniversityNantongJiangsu ProvinceChina Institute for Translational Brain Research Fudan UniversityShanghaiChina Department of Radiology the Affiliated Drum Tower Hospital of Nanjing University Medical SchoolNanjingJiangsu ProvinceChina Innovative Institute of Chinese Medicine and Pharmacy Shandong University of Traditional Chinese MedicineJinanChina Department of Anesthesiology Tianjin Medical University General HospitalTianjinChina Department of Orthopaedics Tianjin Medical University General HospitalTianjinChina Tianjin Eye Hospital Tianjin Eye InstituteTianjin Key Lab of Ophthalmology and Visual ScienceTianjinChina Laboratory of Neurobiology School of Basic Medical SciencesTianjin Medical UniversityTianjinChina

Temporal lobe epilepsy is a multifactorial neurological dysfunction syndrome that is refractory,resistant to antiepileptic drugs,and has a high recurrence *** pathogenesis of temporal lobe epilepsy is complex and is not fully *** calcium dynamics have been implicated in temporal lobe ***,the effect of fluctuating calcium activity in CA1 pyramidal neurons on temporal lobe epilepsy is unknown,and no longitudinal studies have investigated calcium activity in pyramidal neurons in the hippocampal CA1 and primary motor cortex M1 of freely moving *** this study,we used a multichannel fiber photometry system to continuously record calcium signals in CA1 and M1 during the temporal lobe epilepsy *** found that calcium signals varied according to the grade of temporal lobe epilepsy *** particular,cortical spreading depression,which has recently been frequently used to represent the continuously and substantially increased calcium signals,was found to correspond to complex and severe behavioral characteristics of temporal lobe epilepsy ranging from gradeⅡto gradeⅤ.However,vigorous calcium oscillations and highly synchronized calcium signals in CA1 and M1 were strongly related to convulsive motor *** inhibition of pyramidal neurons in CA1 significantly attenuated the amplitudes of the calcium signals corresponding to gradeⅠ*** addition,the latency of cortical spreading depression was prolonged,and the above-mentioned abnormal calcium signals in CA1 and M1 were also significantly ***,it was possible to rescue the altered intracellular calcium *** simultaneous analysis of calcium signals and epileptic behaviors,we found that the progression of temporal lobe epilepsy was alleviated when specific calcium signals were reduced,and that the end-point behaviors of temporal lobe epilepsy were *** results indicate that the calcium dynamic between CA1 and M1 may reflect sp

关键词： Ca^(2+) calcium signals chemogenetic methods hippocampus primary motor cortex pyramidal neurons temporal lobe epilepsy

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Eco-Friendly Encapsulation of Metal Clusters in Porous Organic Cages for Engineerable Microenvironment and Enhanced Catalysis

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CCS Chemistry 2024年第9期6卷 2186-2197页

作者： Siyu Ren Liangxiao Tan Jun-Hao Zhou Jian Sun Peng zhang Xingzhong Cao Yun-Hong zhang Jian-Ke Sun MOE Key Laboratory of Cluster Science Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion MaterialsSchool of Chemistry and Chemical EngineeringBeijing Institute of TechnologyBeijing 102488 Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049

Developing artificial catalysts that mimic the functionality of enzymes and adapt to the surrounding microenvironment to achieve specific activity and selectivity is a fascinating research area yet remains a great *** this work,we present a meticulously designed strategy for the successful encapsulation of ultrasmall metal clusters(MCs)within an amine-type porous organic cage(POC)through electrostatic complexation,phase transfer,and alcohol reduction *** amine cage showcases an intriguing and customizable feature that allows for the regulation of the surrounding microenvironment of the confined MCs through a feasible postmodifi-cation *** functionalization of cage skeleton further facilitates precise adjustment to the surface electronic state of Pd cluster,thereby influencing the adsorption behavior of ***,this controlled regulation leads to modified activity and chemoselectivity in the catalytic hydrogenation of halogenated ***,the investigation of the correlation between the surrounding microenvironment,substrate adsorption,and catalytic performance in the POC-immobilized MCs system has not been previously *** anticipate that our research will provide valuable insights in this field.

关键词： metal cluster porous organic cage encapsulation microenvironment catalysis

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Genome-wide association with transcriptomics reveals a shade-tolerance gene network in soybean

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The Crop Journal 2024年第1期12卷 232-243页

作者： Yanzhu Su Xiaoshuai Hao Weiying Zeng Zhenguang Lai Yongpeng Pan Can Wang Pengfei Guo Zhipeng zhang Jianbo He Guangnan Xing Wubin Wang Jiaoping zhang Zudong Sun Junyi Gai Soybean Research Institute/MARA National Center for Soybean Improvement MARA Key Laboratory of Biology and Genetic Improvement of Soybean/State Key Laboratory for Crop Genetics and Germplasm Enhancement/State Innovation Platform for Integrated Production and Education in Soybean Bio-breeding/Jiangsu Collaborative Innovation Center for Modern Crop Production Nanjing Agricultural UniversityNanjing 210095JiangsuChina Guangxi Academy of Agricultural Sciences Nanning 530007GuangxiChina

Shade tolerance is essential for soybeans in inter/relay cropping systems.A genome-wide association study(GWAS)integrated with transcriptome sequencing was performed to identify genes and construct a genetic network governing the trait in a set of recombinant inbred lines derived from two soybean parents with contrasting shade *** improved GWAS procedure,restricted two-stage multi-locus genome-wide association study based on gene/allele sequence markers(GASM-RTM-GWAS),identified 140 genes and their alleles associated with shade-tolerance index(STI),146 with relative pith cell length(RCL),and nine with *** of these genes by biological categories allowed the construction of a protein–protein interaction network by 187 genes,of which half were differentially expressed under shading and non-shading conditions as well as at different growth *** the identified genes,three ones jointly identified for both traits by both GWAS and transcriptome and two genes with maximum links were chosen as beginners for entrance into the ***,both STI and RCL gene systems worked for shade-tolerance with genes interacted each other,this confirmed that shadetolerance is regulated by more than single group of interacted genes,involving multiple biological functions as a gene network.

关键词： Soybean(Glycine max(L.)Merr.) Shade-tolerance Restricted two-stage multi-locus genomewide association study based on gene/allele sequence markers(GASM-RTM-GWAS) Shade-tolerance index(STI) Relative cell length(RCL) Transcriptome

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AB_(2)-type rare earth-based compounds with C-15 structure:Looking for reversible hydrogen storage materials

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Journal of Rare Earths 2024年第5期42卷 803-816,I0001页

作者： Hao Shen Junxian zhang Valerie Paul-Boncour Ping Li Zhinian Li Yuanfang Wu Lijun Jiang National Engineering Research Center of Nonferrous Metals Materias and Products for New Energy GRINM Group Co.LtdBeijing00088China Univ Paris Est Creteil CNRSICMPEUMR 71822 rue Henri Dunant94320ThiaisFrance Institute for Advanced Materials and Technology University of Science and TechnologyBeijing100083China GRIMAT Engineering Institute Co. Ltd.Beijing101407China

AB_(2)-type(A=rare earth,B=transition metal)intermetallic compounds with C15 structure can easily absorb large amount of hydrogen,showing their potential use as hydrogen storage *** crucial problem hindering their application is hydrogen induced amorphization(HIA),which leads to the irreversible hydrogen sorption *** stability of the AB_2 Laves phase compounds,the structural properties,the hydrogenation properties and the controlling factors of HIA are discussed in this *** with other factors,the atomic radii ratio r_A/r_B is the most important one influencing the ***-element substitution is an efficient way to suppress or limit HIA and may enable AB_2 compounds to be suitable for hydrogen storage.

关键词： Rare earth-based AB_2-type compounds Hydrogenation properties Hydrogen induced amorphization Elemental substitution

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Leech Poecilobdella manillensis protein extract ameliorated hyperuricemia by restoring gut microbiota dysregulation and affecting serum metabolites

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World Journal of Gastroenterology 2024年第29期30卷 3488-3510页

作者： Xia Liu Xing-Qiu Liang Tian-Cai Lu Zhe Feng Min zhang Nan-Qing Liao Feng-Lian zhang Bo Wang Li-Sheng Wang Medical College Guangxi UniversityNanning 530004Guangxi Zhuang Autonomous RegionChina Department of Traditional Chinese Medicine HIV/AIDS Clinical Treatment Center of Guangxi(Nanning)The Fourth People’s Hospital of NanningNanning 530023Guangxi Zhuang Autonomous RegionChina Department of Science and Technology Ruikang Hospital Affiliated to Guangxi University of Chinese MedicineNanning 530011Guangxi Zhuang Autonomous RegionChina General Manager’s Office Guangxi Fuxinyi Biological Technology Co.Ltd.Pingnan 537300Guangxi Zhuang Autonomous RegionChina Department of Joint and Sports Medicine Ruikang Hospital Affiliated to Guangxi University of Chinese MedicineNanning 530011Guangxi Zhuang Autonomous RegionChina Department of Gerontology Nanning Social Welfare HospitalNanning 530004Guangxi Zhuang Autonomous RegionChina

BACKGROUND Hyperuricemia(HUA)is a public health concern that needs to be solved *** lyophilized powder of Poecilobdella manillensis has been shown to significantly alleviate HUA;however,its underlying metabolic regulation remains *** To explore the underlying mechanisms of Poecilobdella manillensis in HUA based on modulation of the gut microbiota and host *** A mouse model of rapid HUA was established using a high-purine diet and potassium oxonate *** mice received oral drugs or ***,16S rRNA sequencing and ultra-high performance liquid chromatography with quadrupole time-of-flight mass spectrometry-based untargeted metabolomics were performed to identify changes in the microbiome and host metabolome,*** levels of uric acid transporters and epithelial tight junction proteins in the renal and intestinal tissues were analyzed using an enzyme-linked immunosorbent *** The protein extract of Poecilobdella manillensis lyophilized powder(49 mg/kg)showed an enhanced anti-trioxypurine ability than that of allopurinol(5 mg/kg)(P<0.05).A total of nine bacterial genera were identified to be closely related to the anti-trioxypurine activity of Poecilobdella manillensis powder,which included the genera of Prevotella,Delftia,Dialister,Akkermansia,Lactococcus,Escherichia_Shigella,Enterococcus,and ***,22 metabolites in the serum were found to be closely related to the anti-trioxypurine activity of Poecilobdella manillensis powder,which correlated to the Kyoto Encyclopedia of Genes and Genomes pathways of cysteine and methionine metabolism,sphingolipid metabolism,galactose metabolism,and phenylalanine,tyrosine,and tryptophan *** analysis found that changes in the gut microbiota were significantly related to these *** The proteins in Poecilobdella manillensis powder were effective for ***,they are associated with improvements in g

关键词： Gut microbiota Metabolism Multi-omics Poecilobdella manillensis Sphingolipid metabolism pathway Galactose metabolism pathway Hyperuricemia

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Expression analysis of the R2R3-MYB gene family in upland cotton and functional study of GhMYB3D5 in regulating Verticillium wilt resistance

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Journal of Integrative Agriculture 2024年第10期23卷 3294-3310页

作者： Jie Liu Zhicheng Wang Bin Chen Guoning Wang Huifeng Ke Jin zhang Mengjia Jiao Yan Wang Meixia Xie Yanbin Li Dongmei zhang Xingyi Wang Qishen Gu Zhengwen Sun Liqiang Wu Xingfen Wang Zhiying Ma Yan zhang State Key Laboratory of North China Crop Improvement and Regulation/North China Key Laboratory for Germplasm Resources Ministry of Education/College of AgronomyHebei Agricultural UniversityBaoding 071001China

Improving plant resistance to Verticillium wilt(VW),which causes massive losses in Gossypium hirsutum,is a global *** plants need to efficiently allocate their limited energy resources to maintain a balance between growth and ***,few transcriptional regulators specifically respond to Verticillium dahliae and the underlying mechanism has not been identified in *** this study,we found that the that expression of most R2R3-MYB members in cotton is significantly changed by *** infection relative to the other MYB *** novel R2R3-MYB transcription factor(TF)that specifically responds to ***,GhMYB3D5,was ***3D5 was not expressed in 15 cotton tissues under normal conditions,but it was dramatically induced by *** *** functionally characterized its positive role and underlying mechanism in VW *** *** infection,the up-regulated GhMYB3D5 bound to the GhADH1 promoter and activated *** addition,GhMYB3D5 physically interacted with GhADH1 and further enhanced the transcriptional activation of ***,the transcriptional regulatory module GhMYB3D5-GhADH1 then promoted lignin accumulation by improving the transcriptional levels of genes related to lignin biosynthesis(GhPAL,GhC4H,Gh4CL,and GhPOD/GhLAC)in cotton,thereby enhancing cotton VW *** results demonstrated that the GhMYB3D5 promotes defense-induced lignin accumulation,which can be regarded as an effective way to orchestrate plant immunity and growth.

关键词： cotton Verticillium wilt resistance GhMYB3D5 GhADH1 transcriptional regulatory module

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中蔗系列甘蔗品种的黑穗病抗性鉴定

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中国糖料 2019年第1期41卷 37-40页

作者：张姗姗张沛然兰仙软李茹黄有总陈保善广西大学生命科学与技术学院南宁530004 亚热带农业生物资源保护与利用国家重点实验室南宁530004 广西大学农学院南宁530004

黑穗病是广西蔗区最主要的病害。本研究利用人工接种结合病区大田自然发病的方法,用4对甘蔗黑穗病菌交配型单倍体菌株分别注射接种,对本实验室培育的甘蔗新品种(系)中蔗1号、中蔗6号和中蔗9号及广西主栽品种ROC22进行甘蔗黑穗病抗性评... 详细信息

黑穗病是广西蔗区最主要的病害。本研究利用人工接种结合病区大田自然发病的方法,用4对甘蔗黑穗病菌交配型单倍体菌株分别注射接种,对本实验室培育的甘蔗新品种(系)中蔗1号、中蔗6号和中蔗9号及广西主栽品种ROC22进行甘蔗黑穗病抗性评价。结果表明,4个甘蔗品种对黑穗病抗性从强到弱排序依次为:中蔗9号>中蔗1号>中蔗6号>ROC22。对重病区田间一年宿根自然发病进行全年跟踪调查,中蔗1号和中蔗6号黑穗病发病率为零,中蔗9号发病率为0.4%,ROC22为6.8%。结论:中蔗系列甘蔗品种有很强的黑穗病抗性。

关键词：甘蔗中蔗系列品种黑穗病抗性

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Knowledge-guided machine learning reveals pivotal drivers for gasto-particle conversion of atmospheric nitrate

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Environmental Science and Ecotechnology 2024年第3期19卷 100-108页

作者： Bo Xu Haofei Yu Zongbo Shi Jinxing Liu Yuting Wei Zhongcheng zhang Yanqi Huangfu Han Xu Yue Li Linlin zhang Yinchang Feng Guoliang Shi State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control Tianjin Key Laboratory of Urban Transport Emission ResearchCollege of Environmental Science and EngineeringNankai UniversityTianjin300350China CMA-NKU Cooperative Laboratory for Atmospheric Environment-Health Research(CLAER) College of Environmental Science and EngineeringNankai UniversityTianjin300350China Department of Civil Environmentaland Construction EngineeringUniversity of Central FloridaOrlandoFLUSA School of Geography Earth and Environment Sciences University of BirminghamBirminghamB152TTUK State Key Laboratory of Precision Measuring Technology and Instruments Tianjin Key Laboratory of air Pollutants Monitoring TechnologySchool of Precision Instrument and Opto-electronics EngineeringTianjin UniversityTianjin300072China Gigantic Technology(Tianjin)Co. LtdTianjin300072China College of Computer Science Nankai UniversityTianjin300350China China National Environmental Monitoring Centre Beijing100012China

Particulate nitrate,a key component of fine particles,forms through the intricate gas-to-particle conversion *** process is regulated by the gas-to-particle conversion coefficient of nitrate(ε(NO_(3)^(-))).The mechanism betweenε(NO_(3)^(-))and its drivers is highly complex and nonlinear,and can be characterized by machine learning ***,conventional machine learning often yields results that lack clear physical meaning and may even contradict established physical/chemical mechanisms due to the influence of ambient *** urgently needs an alternative approach that possesses transparent physical interpretations and provides deeper insights into the impact ofε(NO_(3)^(-)).Here we introduce a supervised machine learning approachdthe multilevel nested random forest guided by theory *** approach robustly identifies NH4 t,SO_(4)^(2-),and temperature as pivotal drivers forε(NO_(3)^(-)).Notably,substantial disparities exist between the outcomes of traditional random forest analysis and the anticipated actual ***,our approach underscores the significance of NH4 t during both daytime(30%)and nighttime(40%)periods,while appropriately downplaying the influence of some less relevant drivers in comparison to conventional random forest *** research underscores the transformative potential of integrating domain knowledge with machine learning in atmospheric studies.

关键词： Machine learning Data driven Theoretical approach Domain knowledge Guide

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