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Cobalt-n.n.particle catalysts derived from zeolitic imidazolate framework@MXene composites for efficient oxidative self-coupling of benzylamines

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Frontiers of Chemical Science and Engineering 2024年第1期18卷 95-106页

作者： Jie Chen Mingyuan Jian Deqiong xie Kecan Dou Deli Chen Weidong Zhu Fumin Zhang Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Institute of Physical ChemistryZhejiang Normal UniversityJinhua 321004China

In this study,we synthesize a catalyst comprising cobalt n.n.particles supported on MXene by pyrolyzing a composite in a n2 ***,the composite comprises a bimetallic Zn/Co zeolitic imidazole framework grown in situ on the outer surface of *** catalytic efficiency of the catalyst is tested for the self-coupling of 4-methoxybenzylamine to produce value-added imine,where atmospheric oxygen(1 atm)is used as the *** on the results,the catalyst displayed impressive catalytic activity,achieving 95.4%yield of the desired imine at 383 K for 8 ***,the catalyst showed recyclability and tolerance toward benzylamine substrates with various functional *** outstanding performance of the catalyst is primarily attributed to the synergetic catalytic effect between the cobalt n.n.particles and MXene support,while also benefiting from the three-dimensional porous ***,a preliminary investigation of potential reaction mechanisms is conducted.

关键词： MXene sacrificial template oxidative self-coupling Co n.n.particles imine

Seasonal constraint of dynamic water temperature on riverine dissolved inorganic nitrogen transport in land surface modeling

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Atmospheric and Oceanic Science Letters 2024年第4期17卷 35-40页

作者： Shuang Liu Kaiheng Hu Zhenghui xie Yan Wang State Key Laboratory of Mountain Hazards and Engineering Safety Institute of Mountain Hazards and EnvironmentChinese Academy of SciencesChengduChina State Key Laboratory of numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina The national Key Laboratory of Water Disaster Prevention Nanjing Hydraulic Research InstituteNanjingChina

水体温度变化对河流可溶性无机氮(DIn)输送有着强烈控制作用.然而,在全球尺度上河流DIn输送量对水温度变化的响应尚不清楚.因此,本文基于陆面过程模式,耦合河流水温估算和DIn传输方案,设定有,无动态水温情景,对比研究陆面模拟中水温变... 详细信息

水体温度变化对河流可溶性无机氮(DIn)输送有着强烈控制作用.然而,在全球尺度上河流DIn输送量对水温度变化的响应尚不清楚.因此,本文基于陆面过程模式,耦合河流水温估算和DIn传输方案,设定有,无动态水温情景,对比研究陆面模拟中水温变化对河流DIn通量变化的影响.结果表明:在考虑水温动态变化后,在30°n和30°S之间, DIn通量年振幅减小5%–25%.在中国东部地区,水温动态变化使河流DIn通量在夏季减少1%–3%,在冬季增加1%–5%,对DIn通量具有明显的季节性约束作用,表明动态水温的表达在河流DIn输送模拟中的重要性.

关键词：陆面模拟河流氮输送水温变化季节变化全球尺度

Catch organism assemblages along artificial reefs area and adjacent waters in Haizhou Bay

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Acta Oceanologica Sinica 2024年第2期43卷 34-42页

作者： Shike Gao Bin xie Chengyu Huang Xiao Zhang Shuo Zhang Wenwen Yu College of Marine Living Resource Sciences and Management Shanghai Ocean UniversityShanghai 201306China Jiangsu Research Institute of Marine Fisheries Nantong 226007China Third Institute of Oceanography Ministry of Natural ResourcesXiamen361005China Joint Laboratory for Monitoring and Conservation of Aquatic Living Resources In the Yangtze Estuary Shanghai 200000China

To better understand the community patterns mediated by connectivity in artificial reefs of coastal areas, it is necessary to understand the distribution and coexistence of organisms with artificial reefs area and adjacent waters. This study was conducted to examine main catches assemblages collected by trawls in Haizhou Bay,which included five habitats: the artificial reef area(AR), aquaculture area(AA), natural area(nA), estuary area(EA) and comprehensive effect area(CEA). The result shows that the total abundances of species in the five habitats were highly different(univariate PERMAnOVA: P = 0.001, n = 24), but some species were also unique in their habitat(e.g. Scapharca subcrenata and Glossaulax didyma in AA). The body size distribution of specific species between habitats are different. For Collichthys lucidus, their body size in AR(14.63 cm ± 1.64 cm) and EA(14.3 cm ± 0.85 cm) is higher than that in.n.(10.65 cm ± 1.64 cm), CEA(11.28 cm ± 1.85 cm) and AA(12.1 cm ±0.43 cm), which indicates the potential connection from AR to EA mediated by their adult population. We concluded that artificial reefs in AR can be considered key compon.n.s that have the ability to support species assemblages in adjacent habitats. This study has implications for the conservation and monitoring of species assemblages in coastal areas in terms of that artificial reefs can be applied in different stages of habitat protection implementation and in different combinations of scenarios.

关键词： assemblage artificial reefs adjacent water Haizhou Bay

Palladium-Catalyzed[4+2]and[6+2]Dipolar Cycloadditions for the Construction of Benzo[d]isothiazole 1,1-Dioxide Fused 1,3-Oxazin.n.s and 1,3-Oxazocanes

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Chinese Journal of Chemistry 2024年第8期42卷 829-834页

作者： Lei Chen Hongling xie Yu Xue Zhengyu Han Jianwei Sun Hai Huang Jiangsu Key Laboratory of Advanced Catalytic Materials&Technology School of Petrochemical EngineeringChangzhou UniversityChangzhouJiangsu213164 China Department of Chemistry The Hong Kong University of Science and TechnologyClear Water BayKowloonHong Kong SARChina

Comprehensive Summary,The Pd-catalyzed dipolar cycloaddition represents a significant synthetic strategy for the construction of useful heterocyclic *** study developed the dipolar[4+2]and[6+2]cycloaddition reactions of benzo[d]isothiazole 1,1-dioxides(BDs)leading to the synthesis of BD-fused 1,3-oxazin.n. and 1,3-oxazocane derivatives,*** particular,the synthesis of BD-fused 1,3-oxazin.n.s demonstrated regio-and en.n.ioselective characteristics,resulting in products with good yields,en.n.ioselectivity and regioselectivity(if applicable).Furthermore,the[6+2]cycloaddition reaction developed in this work represented the first strategy for the synthesis of medium-sized ring compounds based on BDs.

关键词： Cycloaddition 1,3-Oxazin.n.s 1,3-Oxazocanes Medium-ring compounds Stereochemistry n-Heterocycles Sulfonamides En.n.ioselectivity Asymmetricsynthesis

Intake of tobacco nitrosamines of smokers in various provinces of China and their cancer risk:A meta-analysis

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Journal of Environmental Sciences 2024年第7期141卷 249-260页

作者： Xiao Li Zhiwei Ye Jun Wang Pengfei Lin Xiaojin Zhang Shuguang xie Chao Chen Research Institute for Environmental Innovation(Suzhou) TsinghuaSuzhouJiangsu 215163China State Key Joint Laboratory of Environmental Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China Shenzhen Key Laboratory of Organic Pollution Prevention and Control State Key Laboratory of Urban Water Resource and EnvironmentHarbin Institute of TechnologyShenzhen 518055China State Key Joint Laboratory of Environmental Simulation and Pollution Control College of Environmental Science and EngineeringPeking UniversityBeijing 100871China

nitrosamines are a class of carcinogens which have been detected widely in food,water,some pharmaceuticals as well as *** objectives of this paper include reviewing the basic information on tobacco consumption and nitrosamine contents,and assessing the health risks of tobacco nitrosamines exposure to Chinese *** searched the publications in English from“Web of Science”and those in Chinese from the“China national Knowledge Infrastructure”in 2022 and collected 151 literatures with valid *** content of main.n.trosamines in tobacco,including 4-(methylnitrosoamino)-1-(3-pyridyl)-1-butan.n.(nnK),n.n.trosonornicotine(n.n.,n.n.trosoanatabine(nAT),n.n.trosoanabasine(nAB),total tobacco-specific nitrosamines(TSnA),and n.n.trosodimethylamine(nDMA)were *** information of daily tobacco consumption of smokers in 30 provinces of China was also ***,the intakes of n.n.nnK,nAT,nAB,TSnAs,and nDMA via tobacco smoke were estimated as 1534ng/day,591 ng/day,685 ng/day,81 ng/day,2543 ng/day,and 484 ng/day by adult smokers in30 provinces,*** cancer risk(CR)values for n.n.and nnK inhalation intake were further calculated as 1.44×10^(-5)and 1.95×10^(-4).The CR value for nDMA intake via tobacco smoke(inhalation:1.66×10^(-4))indicates that nDMA is similarly dangerous in tobacco smoke when compared with the *** China,the CR values caused by average nitrosamines intake via various exposures and their order can be estimated as the following:smoke(3.75×10^(-4))>food(1.74×10^(-4))>drinking water(1.38×10^(-5)).Smokers in China averagely suffer 200%of extra cancer risk caused by nitrosamines in tobacco when compared with n.n.smokers.

关键词： n.n.trosamine Tobacco Cancer risk Tobacco specific nitrosamines(TSnAs) n.n.trosodimethylamine(nDMA)

Cobalt-Catalyzed Switchable[4+1]and[4+1+1]Spirocyclization of Aromatic Amides with 2-Diazo-1H-indene-1,3(2H)-dione:Access to Spiro Indene-2,1'-isoindolin.n.s and Spiro Isochroman-3,1'-isoindolin.n.s

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Chinese Journal of Chemistry 2024年第4期42卷 363-369页

作者： Bin Li Mengmeng xie Jingyu Li n.n. Shen Xinying Zhang Xuesen Fan State Key Laboratory of Antiviral Drugs Pingyuan LaboratoryKey Laboratory of Green Chemical Media and ReactionsKey Laboratory for Yellow River and Huai River Water Environmental Pollution ControlMinistry of EducationSchool of EnvironmentSchool of Chemistry and Chemical EngineeringHenan Normal UniversityXinxiangHenan453007 China

Herein,we report a condition-controlled divergent synthesis of spiro indene-2,1'-isoindolin.n.s and spiro isochroman-3,1'-isoindolin.n.s through cobalt-catalyzed formal[4+1]and[4+1+1]spirocyclization of aromatic amides with 2-diazo-1H-indene-1,3(2H)-*** the reaction is carried out under air in ethyl acetate,spiro indene-2,1'-isoindolin.n.s are formed through Co(II)-catalyzed C—H/n—H[4+1]*** the reaction is run under O2 in CH3Cn,on the other hand,spiro isochroman-3,1'-isoindolin.n.s are generated through Baeyer-Villiger oxidation of the in situ formed spiro indene-2,1'-isoindolin.n.s with O2 as a cheaper and environmental-friendly oxygen *** general,these protocols have advantages such as using n.n.precious and earth-abundant metal catalyst,no extra additive,high efficiency and regioselectivity.A gram-scale synthesis and the removal of the directing group further highlight its utility.

关键词： Spiro indene-2,1'-isoindolin.n.s Spiro isochroman-3,1'-isoindolin.n.s 3d Transition metals Cobalt-catalyzed C-H Activation Switchable[4+1]and[4+1+1]spirocyclization Aromatic amides 2-Diazo-1H-indene-1,3(2H)-dione

Allosteric DnAzyme-based encoder for molecular information transfer

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Chinese Chemical Letters 2024年第7期35卷 235-241页

作者： Minghao Hu Tianci xie Yuqiang Hu Longjie Li Ting Wang Tongbo Wu School of Pharmacy Tongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China Department of Oncology Tongji Hospital of Tongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China GI Cancer Research Institute Tongji HospitalHuazhong University of Science and TechnologyWuhan 430030China School of Life Science and Technology Wuhan Polytechnic UniversityWuhan 430023China State Key Laboratory of Bioelectronics National Demonstration Center for Experimental Biomedical Engineering EducationSchool of Biological Science and Medical EngineeringSoutheast UniversityNanjing 210096China

Dynamic DnA n.n.technology plays a significant role in.n.nomedicine and information science due to its high programmability based on Watson-Crick base pairing and n.n.scale *** DnA machines and networks have been widely used in various fields,including molecular imaging,biosensors,drug delivery,information processing,and logic *** serve as crucial compon.n.s for information compilation and transfer,allowing the conversion of information from diverse application scenarios into a format recognized and applied by DnA ***,there are only a few encoder designs with DnA ***,the molecular priority encoder is hardly *** this study,we introduce allosteric DnAzyme-based encoders for information *** design of the allosteric domain and the recognition arm allows the input and output to be independent of each other and freely *** pre-packaged mode design achieves uniformity of baseline dynamics and dynamics *** also integrated n.n.nucleic acid molecules into the encoder through the aptamer design of the allosteric ***,we developed the 2^(n)-n encoder and the EndoⅣ-assisted priority encoder inspired by immunoglobulin's molecular structure and effector *** our knowledge,the proposed encoder is the first enzyme-free DnA encoder with DnA output,and the priority encoder is the first molecular priority encoder in the DnA reaction *** encoders avoid complex operations on a single molecule,and their simple structure facilitates their application in complex DnA circuits and biological scenarios.

关键词： DnAzyme Encoder nucleic acids DnA circuit DnA strand displacement Dynamic DnA n.n.technology

The Origin of Mesozoic A-type Granitoids,Fujian Province,Southeast China:Insights from Geochronology,Mineralogy and Geochemistry

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Acta Geologica Sinica(English Edition) 2024年第3期98卷 630-640页

作者： xie Qifeng DOnG Yunpeng CAI Yuanfeng ZHAI Mingguo XIAO Aifang ZHAnG Hong Zijin School of Geology and Min.n. Fuzhou UniversityFuzhou 350108China State Key Laboratory of Contin.n.al Dynamics Northwest UniversityXi’an 710069China State Key Laboratory for Mineral Deposits Research Nanjing UniversityNanjing 210023China State Key Laboratory of Lithospheric Evolution Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China

The magma sources,origins and precise forming ages of the miarolite from Qishan and Kuiqi intrusions are still *** results reveal that,miarolites from the Qishan and Kuiqi intrusions yield crystallization ages of~101 and~98 Ma,and they have a high formation temperature(~910℃)and low oxygen fugacity value,indicating crystallization condition at low pressure in the upper crust with temperature of 678℃.The Qishan and Kuiqi miarolites are characterized by enrichment in SiO_(2) and high-K alkali,depletion in Ca and Mg,and belong to the high-K weak peraluminous rock *** samples are enriched in HFSEs(i.e.,Ta,Zr and Hf)and LILEs(i.e.,Ba,P and Sr),depleted in Ba and Sr with the negative anomaly of *** the primitive mantle normalized trace element spider diagram,the samples show a right-inclined‘seagull-type’pattern,combined the ratios of(La/Yb)_(n),10000×Al/Ga,Rb/nb and nb/Ta etc.,they were proved to be alkaline A-type *** the characterize of the trace elements,they were derived from clay-rich source accompanied pelite melting,and subjected to K-feldspar crystallization *** values of ε_(Hf)(t)and tDM2 are distributed in the range of-2.8 to 3.3 with~1.2 Ga,and-6.0 to 4.0 with~1.2 Ga,revealing that they were generated from the Mesoproterozoic Cathaysia basement *** comprehensive research reveals the Kuiqi and Qishan intrusions derived from crust-mantle mixing and partial melting of the crust,respectively,resulting from lithospheric extension generated by the Paleo-Pacific Plate subducted into the European-Asian Plate.

关键词： A-type granitoid geochronology extension subduction Mesozoic Southeast China

Molecular characterization of an outbreak-involved Bacillus anthracis strain confirms the spillover of anthrax from West Africa

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Infectious Diseases of Poverty 2024年第1期13卷 93-94页

作者： Shuchao Wang Roland Suluku Mohamed B.Jalloh Ahmed F.Samba Baogui Jiang Yubiao xie Doris Harding Mengyao Zhang Foday Sahr Mahmud E.Sesay James S.Squire Mohamed A.Vandi Moin.n. n.Kallon Shoufeng Zhang Rongliang Hu Yuee Zhao Zhiqiang Mi Changchun Veterinary Research Institute Chinese Academy of Agricultural Sciences Changchun China Department of Animal Sciences School of Agriculture and Food Sciences Njala University Njala Sierra Leone Department of Microbiology College of Medicine and Allied Health Sciences University of Sierra Leone Freetown Sierra Leone Ministry of Agriculture and Food Sciences Freetown Sierra Leone Beijing Institute of Microbiology and Epidemiology Beijing China Ministry of Health and Sanitation Freetown Sierra Leone Beijing Institute of Biotechnology Beijing China

Background Anthrax,a zoonotic disease caused by the spore-forming bacterium Bacillus anthracis,remains a major global public health concern,especially in countries with limited *** Leone,a West African country historically plagued by anthrax,has almost been out of report on this disease in recent *** this study,we described a large-scale anthrax outbreak affecting both animals and humans and attempted to characterize the *** The causative agent of the animal outbreak in Port Loko District,Sierra Leone,between March and May 2022 was identified using the n.n.pore sequencing technique.A nationwide active surveillance was implemented from May 2022 to June 2023 to monitor the occurrence of anthrax-specific symptoms in *** cases were subsequently verified using quantitative polymerase chain ***-genome sequencing was accomplished by combin.n. long-read and short-read sequencing *** phylogenetic analysis was performed based on the full-chromosome single nucleotide *** The outbreak in Port Loko District,Sierra Leone,led to the death of 233 animals between March 26th and May 16th,*** ruled out the initial suspicion of Anaplasma species and successfully identified *** as the causative agent of the *** a result of the government's prompt response,out of the 49 suspected human cases identifed during the one-year active surveillance,only 6 human cases tested positive,all within the frst month after the official declaration of the *** phylogenetic analysis indicated that the BaSL2022 isolate responsible for the outbreak was positioned in the ***.153 clade within the TransEuroAsian group of *** We successfully identifed a large-scale anthrax outbreak in Sierra *** causative isolate of ***,BaSL2022,phylogenetically bridged other lineages in ***.153 clade and neighboring genetic groups,***.144 and ***.148,

关键词： Molecular identification Anthrax Bacillus anthracis Sierra Leone Phylogeny Single nucleotide polymorphism