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Unidirectional propagation of water waves near ancient Luoyang Bridge

Frontiers of physics 2024年第3期19卷 167-174页

作者： Linkang han Qilin Duan Junliang Duan Shan zhu Shiming Chen Yuhang Yin Huanyang Chen Shenzhen Research Institute of Xiamen University Shenzhen 518000China Department of Physics Xiamen UniversityXiamen 361005China Key Laboratory of Underwater Acoustic Communication and Marine Information Technology of the Ministry of Education Xiamen UniversityXiamen 361005China

Metasurfaces and metagratings offer new platforms for electromagnetic wave control with significant ***,metasurfaces based on abrupt phase change and resonant structures suffer from the drawback of high loss and face challenges when applied in water ***,the application of metasurfaces in water wave control is not ideal due to the limitations associated with high loss and other *** have discovered that non-resonant metagratings exhibit promising effects in water wave *** the similarity between bridges and metagratings,we have successfully developed a water wave metagrating model inspired by the ancient Luoyang Bridge in *** conduct theoretical calculations and simulations on the metagrating and derive the equivalent anisotropic model of the *** model provides evidence that the metagrating has the capability to control water waves and achieve unidirectional surface water *** accuracy of our theory is strongly supported by the clear observation of the unidirectional propagation phenomenon during simulation and experiments conducted using a reduced version of the *** is the first time that the unidirectional propagation of water waves has been seen in water wave metagrating *** all,we realize the water wave metagrating experiment for the first *** combining complex gratings with real bridges,we explore the physics embedded in the ancient building—Luoyang Bridge,which are of great significance for the water wave metagrating design and provide a new method for analyzing the effects of water waves on *** the same time,this discovery also provides a new idea for ocean cargo transportation,ocean garbage cleaning,and the development and protection of ancient bridges.

关键词： Luoyang Bridge unidirectional propagation water wave metagratings equivalent anisotropic model

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Practical Synthesis of Valbenazine via 1,3-Dipolar Cycloaddition

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Chinese Journal of Chemistry 2024年第8期42卷 841-845页

作者： Yalan Peng Zuming Lin Lili zhu Shiqing han Sha-Hua Huang Ran Hong College of Biotechnology and Pharmaceutical Engineering Nanjing Tech UniversityNanjingJiangsu211816 China School of Environmental and Chemical Engineering Shanghai Institute of TechnologyShanghai201418 China State Key Laboratory of Chemical Biology Shanghai Institute of Organic ChemistryChinese Academy of SciencesShanghai200032 China Innovation Research Institute of Traditional Chinese Medicine(IRI) Shanghai University of Traditional Chinese Medicine1200 Cailun RoadShanghai201203 China

Comprehensive Summary,Valbenazine(Ingrezza),a potent and highly selective inhibitor of vesicular monoamine transporter type 2(VMAT2)through the active metabolite hydrotetrabenazine(HTBZ),has been approved for the treatment of tardive dyskinesia and,very recently,for chorea,which is associated with Huntington's *** numerous synthetic efforts dedicated to the synthesis of HTBZ,the industrial preparation of valbenazine uses dihydroisoquinoline as a starting material and the chiral resolution of racemic HTBZ derived from ketone ***,we present a practical synthesis of HTBZ and valbenazine featuring a highly stereoselective 1,3-dipolar cycloaddition and enzymatic kinetic *** cascade process includes cycloaddition,N—O bond cleavage,and lactamization,which proved to be operationally *** allure of the enzymatic resolution developed in this work offers a rapid access toward affording tetrahydroisoquinoline(THIQ)-fused piperidine in the production of medically significant compounds,such as yohimbine and reserpine.

关键词： Cycloaddition Chemoenzymatic Kinetic resolution Prodrugs VMAT2 inhibitor

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Crystal phase control and ignition properties of HNS/CL-20 composite microspheres prepared by microfluidics combined with emulsification techniques

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Particuology 2024年第2期85卷 241-251页

作者： Yi Liu Yunyan Guo Rui zhu Jinqiang Zhou Zhengxu Lin Kai han Chongwei An Jingyu Wang Bidong Wu School of Environment and Safety Engineering North University of ChinaTaiyuan030051China School of Engineering Beijing Institute of TechnologyBeijing100081China Shanxi Province Ultrafine Powder Engineering Technology Research Center Taiyuan030051China

Improved controllability and energy density of ignition agents are of great significance for the devel-opment of energetic composite *** this study,droplet microfluidics and emulsification tech-niques were combined to prepare HNS/CL-20 composite microspheres with polyglycidyl azide polymer(GAP)as the *** influence of binder content on the morphology of microspheres was investi-gated,and the microspheres were characterized and tested for particle size,crystal structure,thermal decomposition,dispersibility,mechanical sensitivity,combustion behavior and detonation *** results showed that microspheres prepared with a binder content of 3%had higher sphericity and particle size *** microspheres retained the crystal structure of both HNS and CL-20(ε-type).Compared with raw HNS,the microspheres had higher apparent activation energy,better safety per-formance,and good *** ignition experiments and detonation performance tests show that HNS/CL-20 composite microspheres have excellent ignition performance,obvious combustion flame,and significant energy release effects,which are expected to achieve high energy and high-speed response of the igniter,thus improving the ignition reliability in special environments or systems.

关键词： Droplet microfluidics Emulsification technology Energetic materials Composite microspheres Crystal phase control Ignition

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Eleven new species of the genus Ourapteryx Leach,1814(Lepidoptera:Geometridae)from China

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Zoological Systematics 2024年第2期49卷 158-174页

作者： Rui Cheng Nan Jiang Chaodong zhu Yongqiang Xu Hongxiang han Key Laboratory of Zoological Systematics and Evolution Institute of ZoologyChinese Academy of SciencesBeijing 100101China Institute of Plateau Biology of Xizang Autonomous Region Lhasa 850000China

Eleven new species of Ourapteryx Leach,1814 were described:*** Jiang&han,***.,*** Cheng&han,***.,*** Cheng&Jiang,***.,*** Jiang&Cheng,***.,*** Jiang&Cheng,***.,*** Jiang&Cheng,***.,*** Cheng&zhu,***.,*** Cheng&Jiang,***.,*** Cheng&han,***.,*** Cheng&han,***.,*** Cheng&zhu,*** for these new species are provided,with illustrations of external features and genitalia.

关键词： Ennominae morphology taxonomy

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Study on the optimal incident proton energy of ^(7)Li(p,n)^(7)Be neutron source for boron neutron capture therapy

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Nuclear Science and Techniques 2024年第3期35卷 170-180页

作者： Yi-Nan zhu Zuo-Kang Lin Hai-Yan Yu Ye Dai Zhi-Min Dai Xiao-han Yu Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China University of Chinese Academy of Science Beijing 100049China

Boron neutron capture therapy(BNCT)is recognized as a precise binary targeted radiotherapy technique that effectively eliminates tumors through the^(10)B(n,α)^(7)Li nuclear *** various neutron sources,accelerator-based sources have emerged as particularly promising for BNCT ***^(7)Li(p,n)^(7)Be reaction is highly regarded as a potential neutron source for BNCT,owing to its low threshold energy for the reaction,significant neutron yield,appropriate average neutron energy,and additional *** study utilized Monte Carlo simulations to model the physical interactions within a lithium target subjected to proton bombardment,including neutron moderation by an MgF_(2)moderator and subsequent BNCT dose analysis using a Snyder head *** study focused on calculating the yields of epithermal neutrons for various incident proton energies,finding an optimal energy at 2.7 ***,the Snyder head phantom was employed in dose simulations to validate the effectiveness of this specific incident energy when utilizing a^(7)Li(p,n)^(7)Be neutron source for BNCT purposes.

关键词： Boron neutron capture therapy ^(7)Li(p,n)7Be neutron source Incident proton energy Monte Carlo simulation

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Model informed precision medicine of Chinese herbal medicines formulas-A multi-scale mechanistic intelligent model

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Journal of Pharmaceutical Analysis 2024年第4期14卷 585-600页

作者： Yuanyuan Qian Xiting Wang Lulu Cai Jiangxue han zhu Huang Yahui Lou Bingyue Zhang Yanjie Wang Xiaoning Sun Yan Zhang Aisong zhu Zhejiang Key Laboratory of Blood-Stasis-Toxin Syndrome Zhejiang Chinese Medical UniversityHangzhou310000China Academy of Mathematics and Systems Science Chinese Academy of SciencesBeijing100190China Zhejiang Engineering Research Center for“Preventive Treatment”Smart Health of Traditional Chinese Medicine Zhejiang Chinese Medical UniversityHangzhou310000China College of Basic Medical Sciences Zhejiang Chinese Medical UniversityHangzhou310000China Affiliated Hospital of Liaoning University of Traditional Chinese Medicine Shenyang110032China Academy of Chinese Medical Science Zhejiang Chinese Medical UniversityHangzhou310000China

Recent trends suggest that Chinese herbal medicine formulas(CHM formulas)are promising treatments for complex *** characterize the precise syndromes,precise diseases and precise targets of the precise targets between complex diseases and CHM formulas,we developed an artificial intelligence-based quantitative predictive algorithm(DeepTCM).DeepTCM has gone through multilevel model calibration and validation against a comprehensive set of herb and disease data so that it accurately captures the complex cellular signaling,molecular and theoretical levels of traditional Chinese medicine(TCM).As an example,our model simulated the optimal CHM formulas for the treatment of coronary heart disease(CHD)with depression,and through model sensitivity analysis,we calculated the balanced scoring of the ***,we constructed a biological knowledge graph representing interactions by associating herb-target and gene-disease ***,we experimentally confirmed the therapeutic effect and pharmacological mechanism of a novel model-predicted intervention in humans and *** novel multiscale model opened up a new avenue to combine“disease syndrome”and“macro micro”system modeling to facilitate translational research in CHM formulas.

关键词： Chinese herbal medicine formulas Precision medicine Mathematical modeling Systems biology Coronary heart disease Depression Ischemia-reperfusion Inflammation

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Early fire detection technology based on improved transformers in aircraft cargo compartments

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Journal of Safety Science and Resilience 2024年第2期5卷 194-203页

作者： Hongzhou Ai Dong han Xinzhi Wang Quanyi Liu Yue Wang Mengyue Li Pei zhu College of Civil Aviation Safety Engineering Civil Aviation Flight University of ChinaGuanghan618307China CivilAircraf Fire Science and Safety Enginring Key Laboratory of Sichuan CivilAviation Flight University of ChinaGuanghan 618307China School of Computer Engineering and Science Shanghai UniversityShanghai 200444China Key Laboratory of Civil Aviation Emergency Science&Technology Nanjing University of Aeronautics and AstronauticsNanjing 210000China

The implementation of early and accurate detection of aircraft cargo compartment fire is of great significance to ensure flight *** current airborne fire detection technology mostly relies on single-parameter smoke detection using infrared *** often results in a high false alarm rate in complex air transportation *** traditional deep learning model struggles to effectively address the issue of long-term dependency in multivariate fire *** paper proposes a multi-technology collaborative fire detection method based on an improved transformers ***-wavelength optical sensors,flue gas analyzers,and other equipment are used to carry out multi-technology collaborative detection methods and characterize various feature dimensions of fire to improve detection *** improved Transformer model which integrates the self-attention mechanism and position encoding mechanism is applied to the problem of long-time series modeling of fire information from a global perspective,which effectively solves the problem of gradient disappearance and gradient explosion in traditional RNN(recurrent neural network)and CNN(convolutional neural network).Two different multi-head self-attention mechanisms are used to classify and model multivariate fire information,respectively,which solves the problem of confusing time series modeling and classification modeling in dealing with multivariate classification tasks by a single attention ***,the output results of the two models are fused through the gate *** research results show that,compared with the traditional single-feature detection technology,the multi-technology collaborative fire detection method can better capture fire *** with the traditional deep learning model,the multivariate fire pre-diction model constructed by the improved Transformer can better detect fires,and the accuracy rate is 0.995.

关键词： Deep learning Aircraft cargo compartment Attentionmechanism Firedetection Multi-sourcedata fusion

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Hybrid Multi-Infeed Interaction Factor Calculation Method Considering Voltage Regulation Control Characteristics of Voltage Source Converter

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Energy Engineering 2024年第8期121卷 2257-2273页

作者： Shan Liu Chengbin Chi Fengze han Yanan Wu Lin zhu Tuo Wang State Grid Smart Grid Research Institute State Grid Corporation of ChinaBeijing102209China School of Electric Power Engineering Northeast Electric Power UniversityJilin132012China

Voltage source converter based high voltage direct current(VSC-HVDC)can participate in voltage regulation by flexible control to help maintain the voltage stability of the power *** order to quantitatively evaluate its influence on the voltage interaction between VSC-HVDC and line commutated converter based high voltage direct current(LCC-HVDC),this paper proposes a hybrid multi-infeed interaction factor(HMIIF)calculation method considering the voltage regulation control characteristics of ***,for a hybrid multi-infeed high voltage direct current system,an additional equivalent operating admittance matrix is constructed to characterize HVDC equipment characteristics under small ***,based on the characteristic curve between the reactive power and the voltage of a certain VSC-HVDC project,the additional equivalent operating admittance of VSC-HVDC is *** additional equivalent operating admittance matrix calculation method is ***,the equivalent bus impedance matrix is obtained by modifying the alternating current(AC)system admittance matrix with the additional equivalent operating admittance *** this basis,the HMIIF calculation method based on the equivalent bus impedance ratio is ***,the effectiveness of the proposed method is verified in a hybrid dual-infeed high voltage direct current system constructed in Power Systems Computer Aided Design(PSCAD),and the influence of voltage regulation control on HMIIF is analyzed.

关键词： Hybrid multi-infeed high voltage direct current system hybrid multi-infeed interaction factor control modes equivalent node impedance ratio voltage interaction characteristics

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Accelerated Sequential Deposition Reaction via Crystal Orientation Engineering for Low-Temperature,High-Efficiency Carbon-Electrode CsPbBr3 Solar Cells

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Energy & Environmental Materials 2024年第1期7卷 172-179页

作者： Zeyang Zhang Weidong zhu Tianjiao han Tianran Wang Wenming Chai Jiaduo zhu He Xi Dazheng Chen Gang Lu Peng Dong Jincheng Zhang Chunfu Zhang Yue Hao State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology & Shaanxi Joint Key Laboratory of Graphene School of Microelectronics Xidian University Guangzhou Wide Bandgap Semiconductor Innovation Center Guangzhou institute of technology Xidian University Qinghai Huanghe Hydropower Development CO. LTD.

Low-temperature,ambient processing of high-quality CsPbBr3films is demanded for scalable production of efficient,low-cost carbon-electrode perovskite solar cells（PSCs）.Herein,we demonstrate a crystal orientation engineering strategy of PbBr2precursor film to accelerate its reaction with CsBr precursor during two-step sequential deposition of CsPbBr3films.

关键词： carbon-electrode perovskite solar cells crystal orientation engineering CsPbBr3 low temperature two-step sequential deposition

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Parallelogram 3d-4f-5d heterometallic clusters based on trilacunary tungstoantimonates with excellent proton conductivity

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Chinese Chemical Letters 2024年第3期35卷 528-531页

作者： Haiying Wang han Xu Chaolong Chen Yingjie zhu Yikang Zhang Dongdi Zhang Jingyang Niu Henan Key Laboratory of Polyoxometalate Chemistry College of Chemistry and Molecular SciencesHenan UniversityKaifeng 475004China School of Pharmaceutical Science&Yunnan Key Laboratory of Pharmacology for Natural Products Kunming Medical UniversityKunming 650500China Collaborative Innovation Center of Chemistry for Energy Materials State Key Laboratory of Physical Chemistry of Solid Surface and Department of ChemistryCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China

Two 3d-4f-5d heterometallic cluster-containing polyoxometalates,formulated as Na_(22){(SbW_(9)O_(33))_(4)[La_(3)W_(6)MO_(18)(H_(2)O)_(8)(CH_(3)COO)_(4)]_(2)}·nH_(2)O(abbreviated as La_(6)M_(2),M=Co/Mn)were synthesized and structurally ***-crystal X-ray diffraction analyses reveal that the polyanions of La_(6)Co_(2)and La_(6)Mn_(2)consist of the uncommon 3d-4f-5d clusters{La_(6)W_(12)Co_(2)}and{La_(6)W_(12)Mn_(2)},which are encapsulated by four trilacunary Keggin tungstoantimonates to form the parallelogram-shaped title ***,the polyanions can be extended into a two-dimensional(2D)frame by the linkage of peripheral Na+*** inner space of the 2D layer was filled with water molecules and thus an H-bonded network was formed,which is expected to exhibit a fascinating proton *** study of water-assisted proton conduction demonstrated that La_(6)Co_(2)and La_(6)Mn_(2)were temperature-and humiditydependent proton conductors,respectively,and the proton conductivities could reach 1.3×10^(-2)and 2.3×10^(-2)S/cm at 65℃and 90%RH conditions.

关键词： Polyoxometalate Parallelogram Heterometallic 3d-4f-5d cluster Proton conductivity

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