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Catalytic enantioselective domino alkenylation-alkynylation of alkenes: stereoselective synthesis of 5–7 membered azacycles and carbocycles

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Science China Chemistry 2023年第6期66卷 1701-1706页

作者： Zhaoming Ma lantian Sun Jianrong Steve Zhou State Key Laboratory of Chemical Oncogenomics Guangdong Provincial Key Laboratory of Chemical GenomicsSchool of Chemical Biology and BiotechnologyPeking University Shenzhen Graduate SchoolShenzhen 518055China Department of Chemistry Hong Kong Baptist UniversityHong KongChina

Enantioselective domino alkenylation-alkynylation of olefins is achieved for the first time,using terminal alkynes directly as *** new reaction enables facile construction of azacycles carrying quaternary stereocenters,including 5–7 membered pyrrolidines,piperidines and ***,alkynyl groups in azacyclic products provide a useful handle for derivatization that formed both fused and bridged azabicycles.

关键词： membered cycles synthesis

A review on rules for examination of licensing criteria for producing foods for special medical purpose in China

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Food Science and Human Wellness 2019年第2期8卷 106-114页

作者： Lei Wu lantian Zhang Yan Zhang Hebei Food Inspection and Research Institute&Hebei Key Laboratory of Food Safety Shijiazhuang 050200China

In this paper,the background,principles,and main contents of the rules for the examination of production licenses of foods for special medical purposes are *** contents including general rules,production sites,equipment facilities,equipment layout,technological process,personnel management,management system and supplementary rules are interpreted item by *** study has important value and historical significance for promoting the development of Chinese enterprises and industries of foods for special medical purposes.

关键词： Review Foods for special medical purposes Criteria of production Examination of licensing

Oblique shock train motion based on schlieren image processing

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Chinese Journal of Aeronautics 2023年第3期36卷 30-41页

作者： Longsheng XUE Chuan CHENG Chengpeng WANG lantian ZHANG Kang LI Keming CHENG College of Aerospace Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016China Key Laboratory of Unsteady Aerodynamics and Flow Control Ministry of Industry and Information TechnologyNanjing University of Aeronautics and AstronauticsNanjing 210016China Beijing Institute of Tracking and Telecommunication Technology Beijing 100094China Aerospace System Engineering Shanghai Shanghai 201109China

In this paper,shock train motion in a Mach number 2.7 duct is studied experimentally,and large numbers of schlieren images are obtained by a high-speed *** image processing method based on Maximum Correlation Detection(MCD)is proposed to detect shock train motion from the schlieren images,based on which the key structures,e.g.,separation positions and separation shock angles on the top and bottom walls,can be analysed in *** oscillations of the shock train are generated by rhombus and ellipse shafts at various excitation *** to the analysis of MCD results,the distributions of the frequency components of shock train oscillation generated by the two shafts are distinctly different,in which the motion generated by the ellipse shaft is much smoother;shock train motion is mainly characterized by the oscillation of separation position while the separation shock strength is not so sensitive to downstream disturbance;there is a hysteresis loop relation between the downstream pressure and separation position.

关键词： Frequency components Hysteresis loop Maximum Correlation Detection(MCD) Schlieren image processing Shock train oscillation

Magnetic Coupler Robust Optimization Design for Electric Vehicle Wireless Charger Based on Improved Simulated Annealing Algorithm

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Automotive Innovation 2022年第1期5卷 29-42页

作者： Zhenpo Wang lantian Li Junjun Deng Baokun Zhang Shuo Wang School of Mechanical Engineering Beijing Institute of TechnologyNO.5 Zhongguancun StreetBeijingChina Collaborative Innovation Center of Electric Vehicles in Beijing NO.5 Zhongguancun StreetBeijingChina

Fleets of autonomous vehicles including shuttle buses,freight trucks,and road sweepers will be deployed in the Olympic Vil-lage during Beijing 2022 Winter *** requires intelligent charging infrastructure based on wireless power transfer technology to be *** increase the misalignment tolerance of a high-power wireless charger,the robustness of the magnetic coupler should be *** paper presents a new type of unipolar coupler,which is composed of three con-nected coils in *** dimensional configuration of the coils is analyzed by the finite element *** characteristic parameters of the coil are identified with their influence on the self-inductance and coupling *** expert model is built,whose feasibility can be verified in the aimed design *** with the expert model,an improved simulated annealing algorithm with a backtracking mechanism is *** primary coil can reach the expected characteristics from any starting parameter combination through the proposed optimization *** the same conditions in terms of external circuit parameters,ferrite usage,and aluminum shielding,the offset sensitivity of the magnetic coupler can be reduced from 58.79%to 18.89%.A prototype is established,validating the feasibility of the proposed coil structure with the optimized parameter algorithm.

关键词： Wireless power transfer Magnetic coupler Simulated annealing algorithm Robust optimization

Seed-solution-induced Synthesis of FER Zeolite and Its Catalytic Application in the Skeletal Isomerization of n-Butene

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China Petroleum Processing & Petrochemical Technology 2023年第4期25卷 61-73页

作者： Fan Jinlong Yang Fan Zhu Xuedong Xu Yarong Chen lantian State Key Laboratory of Chemical Engineering East China University of Science and TechnologyShanghai 200237 Research Institute of Urumqi Petrochemical Company PetrochinaUrumqi 830019

A series of Ferrierite(FER)zeolites were prepared via hydrothermal synthesis in the absence of organic templates with the aid of sodium-type FER zeolite(NaFER)or NaFER suspensions(NaFERsus)acquired by NaOH solution treatment as *** differences in the structures and acid sites of the obtained FER zeolite catalysts arising from the choice of seed were investigated,and the catalytic performances of the obtained FER zeolites were evaluated in the skeletal isomerization of *** results indicate that the samples synthesized using NaFERsus feature more Br?nsted acid sites(BAS)in the 10-membered-ring(10-MR)at the expense of strong acid and Lewis acid sites(LAS),compared with samples derived from ***,the FER samples synthesized using NaFERsus outperformed the NaFER counterparts as the BAS in 10-MR and LAS were the main active sites,while BAS in 8-MR and LAS were responsible for side reactions,such as polymerization,cracking,and carbon deposition in n-butene *** optimized FER catalyst was continuously used for 720 h at 350℃ at 0.1 MPa under an n-butene space velocity of 2.0 h^(-1),during which the n-butene conversion remained at>40%,and the isobutylene yield was>37.5%.

关键词： FER zeolites alkali treated seed solution n-butene skeletal isomerization

Composition and Evolution of Hydrogen Isotopes of n-Akanes Generated from Anhydrous Pyrolysis of Sediments from Lake Gahai,Gannan,China

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Acta Geologica Sinica(English Edition) 2021年第5期95卷 1725-1735页

作者： DUAN Yi WU Yingzhong XING lantian LI Zhongping ZHANG Ting Northwest Institute of Eco-Environment and Resources Chinese Academy of Sciences and Gansu Provincial Key Laboratory of Petroleum ResourcesLanzhou 730000China School of Earth Science&Resources Chang’an UniversityXi’an 710054China Shaanxi Center of Mineral Geological Survey Xi'an 710068China

To understand the thermal evolution of lacustrine sedimentary n-alkane hydrogen isotopic composition(δD),especially bacterially derived n-alkanes,anhydrous thermal simulation experiments were performed with sediments from Lake Gahai(Gannan,China).We analyzed the original and pyrolysis-generated n-alkanes and theirδD *** results showed that thermal maturity and n-alkane origins significantly affected the distribution of pyrolysis-generated *** immature to post-mature sediments,the bacterial-derived medium-chain n-alkanes generally had depletedδD *** maximum difference in averageδD values between the bacterial-and herbaceous plant-derived medium-chain n-alkanes was 32‰,and the maximum difference in δD values among individual n-alkanes was 59‰.We found that the averageδD value of pyrolysis-generated n-alkanes from different latitude was significantly different in immature to highly mature sediments,but similar in post-mature *** hydrogen isotopes of sedimentary n-alkanes can be used as indicators for paleoclimate/paleo-environment conditions only when sediments are immature to highly *** thermal evolution,the δD value of generated individual n-alkanes and the averageδD value increased with thermal maturity,indicating that hydrogen isotopes of sedimentary n-alkanes can be used as an index of organic matter *** established mathematical models of average δD values of generated n-alkanes from immature to post-mature sediments using n C_(21)^(-)/nC_(21)^(+)and average chain *** results improve our understanding of the distribution andδD value of sedimentary n-alkanes derived from herbaceous plants in mid-latitude plateau cold regions.

关键词： freshwater lake sediment n-alkane simulation experiment bacterial origin hydrogen isotope thermal evolution

Mutualistic fungus Piriformospora indica modulates cadmium phytoremediation properties of host plant via concerted action of enzymatic and non-enzymatic biochemicals

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Pedosphere 2022年第2期32卷 256-267页

作者： Muhammad KHALID Saeed UR-RAHMAN Haoxin TAN lantian SU Pei ZHOU Nan HUI Key Laboratory of Urban Agriculture School of Agriculture and BiologyShanghai Jiao Tong UniversityShanghai 200240China Joint International Research Laboratory of Metabolic&Developmental Sciences Key Laboratory of Urban Agriculture(South)Ministry of AgriculturePlant Biotechnology Research CenterFudan-SJTU-Nottingham Plant Biotechnology R&D CenterSchool of Agriculture and BiologyShanghai Jiao Tong UniversityShanghai 200240China Shanghai Yangtze River Delta Eco-Environmental Change and Management Observation and Research Station Ministry of Science and TechnologyMinistry of Education800 Dongchuan Rd.Shanghai 200240China Shanghai Urban Forest Ecosystem Research Station National Forestry and Grassland Administration800 Dongchuan Rd.Shanghai 200240China

Soils and ecosystems contaminated with cadmium (Cd) threaten human health and adversely affect morphological,physiological,and biochemical parameters of *** symbiotic association of endophytic fungi with their host plants is the best strategy to improve various plant characteristics and remediate soils polluted with heavy metal(loid)s (HMs).Being a well-known plant growth-promoting fungus,Piriformospora indica confers resistance against a number of abiotic stresses,including HM *** pot experiment explored the potential and ameliorative effects of *** on Artemisia annua *** treated with different concentrations (0,40,80,and 120 mg kg-1) of *** with *** significantly increased plant performance,especially by enhancing chlorophyll concentration and water potential and by decreasing electrolytic leakage,when compared with un-inoculated plants,despite the high Cd ***,*** enhanced antioxidant enzyme activities,thereby reducing the drastic effects of Cd in inoculated *** addition,*** accumulated Cd in the roots of colonized plants,as revealed by atomic absorption spectroscopy,and restricted Cd translocation to aerial ***,*** showed in vitro resistance (up to a certain level) to Cd stress;however,fungus growth was inhibited at very high Cd concentrations,proving it an excellent candidate for use as a potential phytoremediator in fields affected by Cd *** transcriptional analysis showed that the signaling genes and artemisinin and flavonoid biosynthetic pathway genes were significantly upregulated in ***-co-cultivated plants when compared with un-inoculated plants,suggesting a fine collaboration between primary and secondary metabolisms to modulate resistance capacity and to enhance the phytoremediation capability of *** against Cd toxicity.

关键词： Artemisia annua defence-related gene endophytic fungi fungal inoculation heavy metal stress plant growth promotion soil contamination transcripts

A Comparison Study on the δD Value of Polycyclic Aromatic Hydrocarbons in Hydrous Pyrolysate of Herbaceous Peat with Different Water Medium

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Acta Geologica Sinica(English Edition) 2023年第6期97卷 1734-1743页

作者： DUAN Yi WU Yingzhong XING lantian WU Yingqin ZHAO Yang LI Zhongping MA Lanhua DUAN Mingchen Northwest Institute of Eco-Environment and Resources Chinese Academy of Sciences and Gansu Provincial Key Laboratory of Petroleum ResourcesLanzhou 730000China Shaanxi Center of Mineral Geological Survey Xi'an 710068China College of Petroleum Engineering Liaoning Shihua UniversityFushunLiaoning 113001China Earthquake Research Institute of Lanzhou SSBLanzhou 730000China Business School Gansu University of Political Science and LawLanzhou 730070China

To investigate the influence of diagenetic water media on the hydrogen isotopes of individual sedimentary aromatic compounds,a series of hydrous pyrolyses were conducted on herbaceous *** aromatic hydrocarbons(PAHs)in hydrous pyrolysed samples and their hydrogen isotopic composition characteristics were *** aqueous medium demonstrated a significant influence on the hydrogen isotopic composition of the individual PAHs generated during *** results showed that the PAHs formed after pyrolysis in the presence of a saltwater medium with high δD value from a salt lake had a heavy hydrogen isotopic *** PAHs formed after pyrolysis in the presence of a fresh water medium with low δD value from a swamp had a light hydrogen isotopic *** difference in the average PAHδD value between the two hydrous experiments varied from -174‰ to -109‰,suggesting that the hydrogen isotopic composition of individual sedimentary PAHs can reflect the source of the diagenetic water *** addition,a comparative study found that the hydrogen isotopes of PAHs were superior to those of n-alkanes in the same sample for diagenetic water *** results indicated that the exchange of water-derived inorganic hydrogen and organic hydrogen was more intensive in freshwater experiments than in saltwater *** an increase in the simulation temperature,the average δD value of PAHs generated in the hydrous simulation experiments showed an increasing trend,reflecting that the δD value of sedimentary PAHs formed with the participation of diagenetic water media was still closely related to the thermal maturity of organic *** studies showed that theδD values of different types of organic compounds produced by hydrous pyrolysis of peat were in the order,PAHs>n-alkanes>methane.

关键词： hydrogen isotope PAHs hydrous pyrolysis herbaceous peat water medium

SOH Estimation of Lithium Batteries Based on ICA andWOA-RBF Algorithm

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Energy Engineering 2024年第11期121卷 3221-3239页

作者： Qi Wang Yandong Gu Tao Zhu lantian Ge Yibo Huang School of Electrical and Information Engineering Jiangsu University of TechnologyChangzhou213001China Research and Development Department Shuangdeng Group Co.Ltd.Taizhou225500China School of Automotive and Traffic Engineering Jiangsu UniversityZhenjiang212013China

Accurately estimating the State of Health(SOH)of batteries is of great significance for the stable operation and safety of *** article proposes amethod based on the combination of Capacity Incremental Curve Analysis(ICA)andWhale Optimization Algorithm-Radial Basis Function(WOA-RBF)neural network algorithm to address the issues of low accuracy and slow convergence speed in estimating State of Health of ***,preprocess the battery data to obtain the real battery SOH curve and Capacity-Voltage(Q-V)curve,convert the Q-V curve into an IC curve and denoise it,analyze the parameters in the IC curve that may serve as health features;Then,extract the constant current charging time of the battery and the horizontal and vertical coordinates of the two IC peaks as health features,and perform correlation analysis using Pearson correlation coefficient method;Finally,theWOA-RBF algorithmwas used to estimate the battery SOH,and the training results of LSTM,RBF,and PSO-RBF algorithms were *** conclusion was drawn that theWOA-RBF algorithm has high accuracy,fast convergence speed,and the best linearity in estimating *** absolute error of its SOHestimation can be controlled within 1%,and the relative error can be controlled within 2%.

关键词： Lithium-ion batteries ICA WOA RBF SOH estimation