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Journal of Systems Engineering and Electronics 2015年第6期26卷 1177-1183页

作者： Yang Chen Jingwei yin ling Zou Dan Yang Yuan Cao School of Information Science and Engineering Changzhou University College of Underwater Acoustic Engineering Harbin Engineering University School of Textile and Material Engineering Wuhan Textile University School of Electrical and Electronic Engineering Nanyang Technological University

This paper addresses the extremal problem of the null subcarriers based Doppler scale estimation in underwater acoustic （UWA） orthogonal frequency division multiplexing （OFDM） communication. The cost function constructed of the total energy of null subcarriers through discrete Fourier transform （DFT） is proposed. The frequencies of null subcarriers are identified from non-uniform Doppler shift at each tentative scaling factor. Then it is proved that the cost function can be fitted as a quadratic polynomial near the global minimum. An accurate Doppler scale estimation is achieved by the location of the global scarifying precision and increasing the computation minimum through polynomial interpolation, without complexity. A shallow water experiment is conducted to demonstrate the performance of the proposed method. Excellent performance results are obtained in ultrawideband UWA channels with a relative bandwidth of 67%, when the transmitter and the receiver are moving at a relative speed of 5 kn, which validates the proposed method.

关键词： underwater acoustic (UWA) communication orthogo-nal frequency division multiplexing (OFDM) Doppler scale estimation polynomial interpolation.

Contamination by persistent toxic substances in surface sediment of urban rivers in Chaohu City, China

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Journal of Environmental Sciences 2012年第11期24卷 1934-1941页

作者： Feipeng Li Haiping Zhang Xiangzhou Meng ling Chen Daqiang yin College of Environmental Science and Engineering Tongji UniversityShanghai 200092China

The concentration and spatial distribution of persistent toxic substances （PTS） in the river sediment in Chaohu City, China were investigated. A total of nine surface sediments were collected and the selected PTS pollutants including six heavy metals and nineteen polybrominated diphenyl ethers （PBdes） were analyzed. The mean heavy metal concentrations （in mg/kg, dry weight） ranged within 0.18-1.53 （Fig）, 50.08-200.18 （Cu）, 118.70-313.65 （Zn）, 50,77-310,85 （Cr）, 37.12-92.72 （Pb） and 13.29-197.24 （As）, and Cu, Zn and As have been regarded as the main metal pollutants, The levels of PBdes （1.2-12.1 ng/g） and Bde-209 （2.4--30.5 ng/g） were at the middle level of the global range. Bde-209 was the predominant congener （67.0%-85.7%）, which agrees with the fact that technical deca-Bde mixtures are the dominant PBde formulation in China. The relative high level of PTS poUutants in the western part of the city is probably owing to the intensive agricultural activities and lack of sewerage system there. The ecological risk assessment with the sediment quality guidelines （$OGs） indicates that the urban river sediments in the city have been heavily contaminated by heavy metals with probable ecotoxicological impacts on freshwater organisms and the main toxic pollutants are Hg and As, The results of current study imply that the city, and perhaps many other small cities in China as well, requires immediate pollution control measures with emphasis on not only conventional organic pollutants but also on PTS such as heavy metals and PBdes.

关键词： heavy metal polybrominated diphcnyl ethers sediment urban liver Chaohu City

Nanoparticles for the treatment of spinal cord injury

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Neural Regeneration Research 2025年第6期20卷 1665-1680页

作者： Qiwei Yang Di Lu Jiuping Wu Fuming Liang Huayi Wang Junjie Yang Ganggang Zhang Chen Wang Yanlian Yang ling Zhu Xinzhi Sun department of Orthopedic Surgery The First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenan ProvinceChina CAS Key Laboratory of Standardization and Measurement for Nanotechnology CAS Key Laboratory for Biomedical Effects of Nanomaterials and NanosafetyCAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijingChina University of Chinese Academy of Sciences BeijingChina department of Neurosurgery The First Affiliated Hospital of Chongqing Medical UniversityChongqingChina

Spinal cord injuries lead to significant loss of motor, sensory, and autonomic functions, presenting major challenges in neural regeneration. Achieving effective therapeutic concentrations at injury sites has been a slow process, partly due to the difficulty of delivering drugs effectively. Nanoparticles, with their targeted delivery capabilities, biocompatibility, and enhanced bioavailability over conventional drugs, are garnering attention for spinal cord injury treatment. This review explores the current mechanisms and shortcomings of existing treatments, highlighting the benefits and progress of nanoparticle-based approaches. We detail nanoparticle delivery methods for spinal cord injury, including local and intravenous injections, oral delivery, and biomaterial-assisted implantation, alongside strategies such as drug loading and surface modification. The discussion extends to how nanoparticles aid in reducing oxidative stress, dampening inflammation, fostering neural regeneration, and promoting angiogenesis. We summarize the use of various types of nanoparticles for treating spinal cord injuries, including metallic, polymeric, protein-based, inorganic non-metallic, and lipid nanoparticles. We also discuss the challenges faced, such as biosafety, effectiveness in humans, precise dosage control, standardization of production and characterization, immune responses, and targeted delivery in vivo. Additionally, we explore future directions, such as improving biosafety, standardizing manufacturing and characterization processes, and advancing human trials. Nanoparticles have shown considerable progress in targeted delivery and enhancing treatment efficacy for spinal cord injuries, presenting significant potential for clinical use and drug development.

关键词： antioxidants axon regeneration biocompatible materials drug carriers nanoparticles nerve regeneration neuroinflammatory diseases neuroprotection spinal cord injury stem cells

Drosophila models used to simulate human ATP1A1 gene mutations that cause Charcot-Marie-Tooth type 2 disease and refractory seizures

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Neural Regeneration Research 2025年第1期20卷 265-276页

作者： Yao Yuan lingqi Yu Xudong Zhuang Dongjing Wen Jin He Jingmei Hong Jiayu Xie Shengan ling Xiaoyue Du Wenfeng Chen Xinrui Wang Institute of Life Sciences College of Biological Science and EngineeringFuzhou UniversityFuzhouFujian ProvinceChina NHC Key Laboratory of Technical Evaluation of Fertility Regulation for Non-human Primate(Fujian Maternity and Child Health Hospital) FuzhouFujian ProvinceChina Medical Research Center Fujian Maternity and Child Health HospitalCollege of Clinical Medicine for Obstetrics&Gynecology and PediatricsFujian Medical UniversityFuzhouFujian ProvinceChina department of Neurology and Institute of Neurology of The First Affiliated Hospital Institute of Neuroscienceand Fujian Key Laboratory of Molecular NeurologyFujian Medical UniversityFuzhouFujian ProvinceChina

Certain amino acids changes in the human Na^(+)/K^(+)-ATPase pump,ATPase Na^(+)/K^(+)transporting subunit alpha 1(ATP1A1),cause Charcot-Marie-Tooth disease type 2(CMT2)disease and refractory *** develop in vivo models to study the role of Na^(+)/K^(+)-ATPase in these diseases,we modified the Drosophila gene homolog,Atpα,to mimic the human ATP1A1 gene mutations that cause *** located within the helical linker region of human ATP1A1(I592T,A597T,P600T,and D601F)were simultaneously introduced into endogenous Drosophila Atpαby CRISPR/Cas9-mediated genome editing,generating the Atpα^(TTTF)*** addition,the same strategy was used to generate the corresponding single point mutations in flies(Atpα^(I571T),Atpα^(A576T),Atpα^(P579T),and Atpα^(D580F)).Moreover,a deletion mutation(Atpα^(mut))that causes premature termination of translation was generated as a positive *** these alleles,we found two that could be maintained as homozygotes(Atpα^(I571T)and Atpα^(P579T)).Three alleles(Atpα^(A576T),Atpα^(P579)and Atpα^(D580F))can form heterozygotes with the Atpαmut *** found that the Atpαallele carrying these CMT2-associated mutations showed differential phenotypes in *** heterozygous for Atpα^(TTTF)mutations have motor performance defects,a reduced lifespan,seizures,and an abnormal neuronal *** Drosophila models will provide a new platform for studying the function and regulation of the sodium-potassium pump.

关键词： ATP1A1 Atpα bang-sensitive paralysis Charcot-Marie-Tooth disease type 2 CRISPR/Cas9 homology-directed repair Na^(+)/K^(+)-ATPase point mutation seizures sodium pump

Recovery and separation of rare earth elements by molten salt electrolysis

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International Journal of Minerals,Metallurgy and Materials 2021年第6期28卷 899-914页

作者： Tai-qi yin Yun Xue Yong-de Yan Zhen-chao Ma Fu-qiu Ma Mi-lin Zhang Gui-ling Wang Min Qiu Yantai Research Institute&Graduate School Harbin Engineering UniversityYantai 264006China College of Science Heihe UniversityHeihe 164300China Zhongkexin Engineering Consulting(Beijing)Co. LtdBeijing 100039China

With the increasing demand of rare earth metals in functional materials,recovery of rare earth elements(REEs)from secondary resources has become important for the green economy *** salt electrolysis has the advantages of low water consumption and low hazardous waste during REE *** review systematically summarizes the separation and electroextraction of REEs on various reactive electrodes in different molten *** also highlights the relationship between the formed alloy phases and electrodeposition parameters,including applied potential,current,and ion ***,the feasibility of using LiF–NaF–KF electrolyte to recover REEs is evaluated through thermodynamic *** related to REE separation/recovery the choice of electrolyte are discussed in detail to realize the low-energy and high current efficiency of practical applications.

关键词： rare earth element molten salt reactive electrode electrochemical separation

Bridging of Calixarenes with N,N′-Bis(Chloroacetyl)Propylenediamine

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Wuhan University Journal of Natural Sciences 2004年第4期9卷 509-512页

作者： LIJun WANGWei GONGShu-ling CHENYuan-yin CollegeofChemistryandMolecularSciences WuhanUniversityWuhan430072HubeiChina

关键词： N,N ′-bis(chloroacetyl)propylenediamine bridging reaction calixarene

Entanglement of a Five-Qubit Heisenberg XX Chain in a Magnetic Field

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Communications in Theoretical Physics 2009年第5期51卷 811-814页

作者： CAO Min ling yin-Sheng ZHU Shi-Qun School of Science Nantong University Nantong 226007 China School of Physical Science and Technology Suzhou University Suzhou 215006 China

We calculate the eigenvalues and eigenvectors of a five-qubit isotropic Heisenberg model in an external magnetic field, and give analytical results for the concurrence of two nearest-neighbor qubits. A magnetic field can eliminate degeneration and change the ground state of the system. Therefore increasing the value of the magnetic field can induce entanglement in a certain range both for the antiferromagnetic and ferromagnetic case.

关键词： entanglement five-qubit Heisenberg chain

The effects of Te on the performance of Mo-V catalysts prepared by hydrothermal synthesis

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Chinese Chemical Letters 2007年第5期18卷 585-587页

作者： Hua Chang Jiang ling Zeng Bin Long yin Zhejiang University of Science and Technology Hangzhou 310012 PR China

Some Mo-V-Te--La catalysts with varied component were prepared by hydrothermal synthesis and dried with microwave method. The component of the catalyst were greatly affected the crystal structure and Raman spectrum. The phase in the catalysts was different when the Mo, V, and Te content varied. When the catalyst containing the same Mo, V content, due to the effect of dopant of Te element （V0.07 Mo0.93）5O14 became the main phase in the catalyst. The catalyst also showed good activity for the reaction of selective oxidation propane to acrolein and acrylic acid.

关键词： Mo-V based catalysts Hydrothermal synthesis Propane Acrylic acid

Franck-Condon Factors and Band Origins for MgH in the A2П-X2∑＋ System

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Chinese Journal of Chemical Physics 2015年第3期28卷 253-256,I0001页

作者： Xu Cheng Jiao Bai Jian-ping yin Hai-ling Wang State Key Laboratory of Precision Spectroscopy East China Normal University ShanEhai 200052 China

We measure the dispersed spectrum of the A2H-X2E＋ system of MgH using laser abla- tion/laser induced Fluorescence method and obtain the Frank-Condon factors and related transition frequencies of the A2H（v＇=0）-X2∑＋（v＂=0,1） system by analyzing the experimental spectrum. Also, we calculate the Franck-Condon factors and transition frequencies of the A2H-X2∑＋ system of MgH. A comparison of our theoretical calculation and experimental results with other reported theoretical results was carried out as well.

关键词： Franck-Condon factors Energy curve Vibrational frequencies Dispersed fluorescence

dendritic Boundary Corrosion of AA2198 Weld Using Fiber Laser Welding with Al–Cu Filler Wire

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Acta Metallurgica Sinica(English Letters) 2018年第7期31卷 735-741页

作者： Jun-Xia Lu ling Chang Shi-Kai Wu Shi-Kun yin Institute of Laser Engineering Beijing University of Technology

The microstructures and corrosion behaviors of AA2198-T851 alloy and weld were analyzed under corrosive conditions. Weld was formed using an innovative fiber laser welding process with AA2319 Al-Cu filler wire. The metallurgic morphology and distribution of the chemical compositions were determined using imaging techniques such as optical micrograph, scanning electron micrograph, high-resolution transmission electron microscopy, energy-dispersive X-ray spectrometry and X-ray diffraction. Corrosion was evaluated using an immersion test and electrochemical impedance spectroscopy in 3.5% NaC1 solution at room temperature. Results indicate that the parent alloy suffered from pitting corrosion during the initial 4-h immersion which was caused by the inhomogeneous distribution of its chemical compo- nents and the different intermetallics formed during the rolling process. The weld experienced dendritic boundary corrosion under the same conditions due to the addition of the Al-Cu filler and rapid solidification during laser welding, which led to the precipitates Cu enrichment along the grain boundary. When a welding joint was immersed in the solution for 5 days, a big crack was observed across the center of the weld. In comparison, there was good corrosion resistance in the heat- affected zone with a compact protective film.

关键词： 2198 Aluminum alloy. Fiber laser welding dendritic boundary corrosion Al-Cu filler wire