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Key progresses of MOE key laboratory of macromolecular synthesis and functionalization in 2022

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Chinese Chemical Letters 2024年第3期35卷 114-126页

作者： Xumeng Deng Kaihao Chen Kai Pang Xiaoting Liu Minsong Gao Jie Ren Guanwen Yang Guangpeng Wu Chengjian zhang Xufeng Ni Peng zhang Jian Ji Jianzhao Liu Zhengwei Mao Ziliang Wu Zhen Xu Haoke zhang Hanying Li MOE Key Laboratory of Macromolecular Synthesis and Functionalization International Research Center for X PolymersDepartment of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027China

In 2022,The MOE Key Laboratory of Macromolecular Synthesis and Functionalization in Zhejiang University had achieved several important ***,a series of well-defined dinuclear organoboron catalysts were developed to precisely control the enchainment of ether and carbonate segments during the copolymerization of co_(2)and ***,polyester had been synthesized through cationic copolymerization of cyclic ***,ring-opening polymerization of carbon dioxide based valerolactone had been achieved,revealing the prospect of 3-ethylidene-6-vinyltetrahydro-2H-pyran-2-one(EVL)in utilizing co_(2)and synthesizing functional ***,machine learning methods have been applied to biomaterial research,enabling high-throughput screening of functional biomaterial surfaces for implantable devices,and searching for potent antimicrobial peptides in whole combinatorial peptide ***,methods of characterization of biomacromolecule RNA transcription and manipulation of nucleoside modification were ***,artificial enzymes-armed Bifidobacterium Longum probiotics were established to tune down gut ***,three-dimensional(3D)printing technologies were used to engineer tough supramolecular ***,hydroplastic foaming graphene frameworks for acoustic and conductive polymer composites were provided for ***,aggregate photophysics about the nature of through-space interactions(TSIs)and manipulating their strength in small molecules with non-conjugated structure had been ***,the forming mechanism of a newfound nested texture in poly(L-lactic acid)(PLLA)spherulitic films had been ***,the isotropically dyeing mechanism of KDP single crystals grown from hydrogels have been *** related works are reviewed in this paper.

关键词： Polymer Catalyst Biomaterial research mRNA Hydrogel Graphene Crystal

Earthquake detection in the Jiangsu region, China using graphics-processing-unit-based Match & Locate and rapid earthquake association and location

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Earthquake Science 2020年第1期33卷 23-33页

作者： Yafen Huang Shengzhong zhang Yuejun Lv Yanzhen Li Yuting zhang Min Liu School of Geophysics and Information Technology China University of GeosciencesBeijing 100083China Shanghai Sheshan National Geophysical Observatory Shanghai201602China Information Network Center China University of GeosciencesBeijing 100083China Institute of Crustal Dynamics China Earthquake AdministrationBeijing 100085China

Earthquake detection and location are essential in earthquake studies,which generally consists of two main classes:waveform-based and pick-based *** evaluate the ability of two different methods,a graphicsprocessing-unit-based Match&Locate(GPU-M&L)method and a rapid earthquake association and location(REAL)method are applied to continuous seismic data recorded by 24 digital seismic stations from Jiangsu Seismic Network during 2013 for ***-M&L is one of waveform-based methods by waveform cross-correlations while REAL is one of pick-based method to associate arrivals of different seismic phases and locate events through counting the number of P and S picks and travel time ***-six templates are selected from the Jiangsu Seismic Network local catalog by using the GPU-M&*** number of newly detected and located events is about 2.8 times more than those listed in the local *** both utilize a deep-neural-network-based arrival-time picking method called PhaseNet and a shortterm/long-term average(STA/LTA)trigger algorithm for seismic phase detection and picking by applying the *** then refine seismic locations using a least-squares location method(VELEST)and a high-precision relative location method(hypoDD).By applying STA/LTA and PhaseNet,1006 and 1893 events are associated and located,*** newly detected events are mainly clustered and show steeply dipping fault *** analyzing the performance of these methods based on long-term continuous seismic data,the detected catalogs by the GPU-M&L and REAL show that the magnitudes of completeness are 1.4 and 0.8,respectively,which are smaller than 2.6 given by the local *** REAL provides improvement compared with GPU-M&L,REAL is highly dependent on phase detection and picking which is strongly affected by signal-noise ratio(SNR).Stations at southeast of the study region with low SNR may lead to few detections in the same area.

关键词： earthquake detection rapid earthquake association and location graphics-processing-unit-based Match and Locate

Three-dimensional nanostructured co_(2)VO_(4)-decorated carbon nanotubes for sodium-ion battery anode materials

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Rare Metals 2023年第12期42卷 4060-4069页

作者： Yi zhang Zhen zhang Sheng Yu Hannah M.Johnson De-Cheng Zhao Su-Chong Tan Zheng-Dao Pan Zhou-Lu Wang Yu-Tong Wu Xiang Liu School of Energy Sciences and Engineering Nanjing Tech UniversityNanjing 211816China Department of Chemistry Washington State UniversityPullman 99164USA

Since co_(2)VO_(4) possesses a solid spinel structure and a high degree of stability,it has gained interest as a possible anode material for sodium-ion ***,the application of this electrode material is still hampered by its poor electrical conductivity and severe volume *** co_(2)VO_(4) nanoparticles(CVO)were grown on carbon nanotubes(CNTs)by a simple solvothermal method to form string-like conductive networks(CVO/CNTs).The flexible and highly conductive three-dimensional(3D)carbon nano tubes and small-sized CVO NPs can enhance the rapid transport of electrons,thereby enhancing the conductivity of the ***-like conductive network structures have a larger specific surface area,enhancing electron/ion transmission by fully contacting the *** findings demonstrate the superior Na^(+)storing capability of the CVO/CNTs *** battery has a great rate performance(148.2 mAh·g^(-1)at 5 A·g^(-1))and outstanding long-term cycling performance(147.3 mAh·g^(-1)after 1000 cycles at 1A·g^(-1)).In high-rate,long-cycle sodium-ion batteries,CVO/CNTs composites offer a wide range of possible applications.

关键词： Sodium-ion batteries(SIBs) co_(2)VO_(4) Carbon nanotubes(CNTs) Anode Long-cycle

THE OPERATION MODE OF “STORING THECLEAR WATER AND DISCHARGING THE MUDDY FLOW” FOR RESERVOIRS BUILT ON HEAVILY SILT-LADEN RIVERS——A CASE STUDY OF THE SANMENXIA RESERVOIR

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International Journal of Sediment Research 2005年第2期20卷 109-116页

作者： Wenxue LI1,Yuanfeng zhang2 and Cuiping zhang21 Senior Engineer,Yellow River Engineering consulting co.Ltd.,Zhengzhou 450003,China,2 Senior Engineer,Yellow River Institute of Hydraulic Research,Zhengzhou 450003,China Yellow River Engineering consulting co. Ltd. Zhengzhou 450003 China Yellow River Institute of Hydraulic Research Zhengzhou 450003 China

Observation of the operation of the Sanmenxia Reservoir on the Yellow River has led to the conclusion that to preserve a certain effective storage volume for reservoirs built on heavily silt-laden rivers is feasible if the reservoir is operated according to the principle known as “storing the clear water and discharging the muddy flow”. The relative stability of the bed elevation at the end of the backwater and the reservoir’s erosion and deposition equilibrium depend on the compatibility of the pool level maintained in non-flood seasons with the conditions of flow and sediment load during flood seasons. Operating the reservoir to regulate the flood and sediment load during flood seasons can reduce the rate of aggradation in the Lower Yellow River. The basic condition for applying the operation mode of “storing the clear water and discharging the muddy flow” is that a sufficient amount of water should be used for discharging sediment during flood seasons. Under the condition of extremely low flow years,reservoir sedimentation cannot be avoided even if this operation mode is adopted.

关键词： Reservoir Sedimentation The Yellow River Operation

Histamine Excites Rat GABAergic Ventral Pallidum Neurons via co-activation of H1 and H2 Receptors

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Neuroscience Bulletin 2018年第6期34卷 1029-1036页

作者： Miao-Jin Ji Xiao-Yang zhang Xiao-Chun Peng Yang-Xun zhang Zi Chen Lei Yu Jian-Jun Wang Jing-Ning Zhu State Key Laboratory of Pharmaceutical Biotechnology and Department of Physiology School of Life Sciences Nanjing University

The ventral pallidum(VP) is a crucial component of the limbic loop of the basal ganglia and participates in the regulation of reward, motivation, and *** the VP receives afferent inputs from the central histaminergic system, little is known about the effect of histamine on the VP and the underlying receptor mechanism. Here, we showed that histamine, a hypothalamicderived neuromodulator, directly depolarized and excited the GABAergic VP neurons which comprise a major cell type in the VP and are responsible for encoding cues of incentive salience and reward hedonics. Both postsynaptic histamine H1 and H2 receptors were found to be expressed in the GABAergic VP neurons and co-mediate the excitatory effect of histamine. These results suggested that the central histaminergic system may actively participate in VP-mediated motivational and emotional behaviors via direct modulation of the GABAergic VP neurons. Our findings also have implications for the role of histamine and the central histaminergic system in psychiatric disorders.

关键词： Ventral pallidum Histamine H1 receptor H2 receptor Motivation Emotion

Characterization of Nanocrystallizatin Surface Layer of 0.4C-1Cr Low Alloy Steel Prepared by Ultrasonic Particulate Peening

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材料热处理学报 2004年第05B期25卷 1257-1259页

作者： zhangJun-bao LIUYu-liang ZHAOXin-qi WUJie SONGHong-wei XIONGTian-ying BaosteelTechnologyCenter BaoshanIron＆SteelCO.LTD.ShanghaiChina InstituteofMetalResearch ChineseAcademyofSciencesShenyangChina

A nanostructured surface layer was fabricated in a quenched and tempered 0.4C-lCr low alloy steel by ultrasonic particulate peening technique. The microstructure of the nanocrystalline surface layer was characterized by means of TEM and Mossbauer spectroscopy. Experimental results reveal that both cementite and ferrite nanocrystals with an average size of 5 nm were formed in the surface layer of the steel, phase transformation of austenite and dissolution of cementite maybe occur in the process of ultrasonic paniculate peening.

关键词：显微结构超声波喷丸处理表面毫微结晶 0.4C-1Cr低合金钢

Effect of Strontium Substitution on Microstructure and Magnetic Properties of Electrospinning BaFe12O19 Nanofibers

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Journal of Wuhan University of Technology(Materials Science) 2017年第4期32卷 871-874页

作者：侯传信 LIU Guifang 党锋 zhang Zidong CHEN Ju Key Laboratory for Liquid-Solid Structural Evolution & Processing of Materials Ministry of Education Shandong University Jinan 250061 China Shandong Chunxu Chemical Design co. Ltd. Jinan 250061 China

Barium ferrite micro/nano fibers were successfully prepared via the electrostatic spinning by using dimethyl formamide（DMF） as the solvent, and poly vinyl pyrrolidone（PVP） as the spinning auxiliaries. Effects of strontium substitution on the structure, morphology, and magnetic properties were investigated by scanning electron microscope（SEM）, X-ray diffraction analysis（XRD）, and vibration sample magnetometer（VSM）. XRD patterns of the samples confirm that pure barium ferrite fibers form, and the Sr substitution makes the main peaks（110）,（107）, and（114） move to right slightly. Also, the FE-SEM images show that the Sr substituted fibers can keep complete fibrous morphology. Moreover, the VSM results demonstrate that the saturation magnetization can reach 56.7 emu/g when the fibers are calcined at 800℃.

关键词： electrostatic spinning Sr substituted barium ferrite fibers magnetic properties

Reevaluation of thermonuclear reaction rate of ^(50)Fe(p,γ)^(51)co

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Chinese Physics C 2016年第12期40卷 113-119页

作者： Li-Ping zhang Jian-Jun He Wan-Dong Chai Su-Qing Hou Li-Yong zhang college of Physics and Electronic Information Engineering Chifeng University Chifeng 024000 China Key Laboratory of Optical Astronomy National Astronomical Observatories Chinese Academy of Sciences Beijing 100012 China Institute of Modern Physics Chinese Academy of Sciences

The thermonuclear rate of the 50Fe（p, γ）51co reaction in the Type I X-ray bursts （XRBs） temperature range has been reevaluated based on a recent precise mass measurement at CSRe Lanzhou, where the proton separa- tion energy Sp=142±77 keV has been determined firstly for the ~1co nucleus. comparing to the previous theoretical predictions, the experimental Sp value has much smaller uncertainty. Based on the nuclear shell model and mirror nuclear structure information, we have calculated two sets of thermonuclear rates for the 50Fe（p, γ）51coreaction by utilizing the experimental Sp value. It shows that the statistical-model calculations are not ideally applicable for this reaction primarily because of the low density of low-lying excited states in 51co. In this work, we recommend that a set of new reaction rates based on the mirror structure of 51Cr should be incorporated in future astrophysical network calculations.

关键词： X-ray burst (XRB) nucleosynthesis mass measurement proton separation energy reaction rate

Suppressing competitive coordination Reaction for Ohmic Cathode contact Using Amino-Substituted Organic Ligands and Air-Stable Metals

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CCS Chemistry 2021年第12期3卷 367-376页

作者： Yang Lu Ziyang Liu Yuewei zhang Chen zhang Jinbei Wei Zhengyang Bin Xuewen Wang Dongdong zhang Lian Duan Key Lab of Organic Optoelectronics and Molecular Engineering of Ministry of Education Department of ChemistryTsinghua UniversityBeijing 100084 Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Xianhu Hydrogen ValleyFoshan 528200 Center for Flexible Electronics Technology Tsinghua UniversityBeijing 100084 college of Chemistry Sichuan UniversityChengduSichuan 610064 Beijing National Laboratory for Molecular Sciences Institute of Chemistry Chinese Academy of SciencesBeijing 100049

Ohmic cathode contact can be formed readily via coordination-activated n-doping(CAN),by co-evaporating air-stable metals(e.g.,silver)and organic ligands with coordination *** has been proposed that increasing the nucl... 详细信息

关键词： n-dopant phenanthroline coordination ohmic contact inactive metals