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World Journal of Clinical Cases 2019年第23期7卷 4157-4162页

作者： nan ge Si-Yu Sun Endoscopy Center Shengjing Hospital of China Medical University

BACKGROUND Endoscopic ultrasound(EUS)-guided drainage is the optimal method for treatment of pancreatic fluid collections(PFCs),and is associated with ease,safety,and *** is one of the main procedure-related complications,and often requires surgery or radiologic ***,endoscopic management of this complication is *** SUMMARY A 42-year-old man presented for evaluation of abdominal pain and distention for approximately 2 *** computed tomography revealed a pancreatic pseudocyst located in the tail of the ***-guided pancreatic pseudocyst was *** stent placement,massive bleeding was noted from the ***,hemostasis was successfully achieved using hemostatic forceps within the *** Bleeding vessel grasp and coagulation may represent a successful treatment for a fistula hemorrhage during EUS-guided drainage for a PFC,which may be tried before application of balloon or stent compression.

关键词： Pancreatic fluid collections Endoscopic ultrasound Drainage Hemorrhage Case report

Microwave-assisted,facile,rapid and solvent-free one pot two-component synthesis of some special acylals

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Chinese Chemical Letters 2015年第1期26卷 81-84页

作者： Yu-Heng Ma Gang Wu nan Jiang Shu-wang ge Qian Zhou Bai-wang Sun School of Chemistry and Chemical Engineering Southeast University nanjing SimnovTecPharmaceuticals School of Pharmacy Nanjing Medical University

A facile, rapid and solvent-flee method for the conversion of acids and dihalomethane to the corresponding methylene diesters （acylals） using microwave as activators or assistor, is reported. This method is particularly powerful for the diesterification of carboxylic acids, which afford methylene diesters in good to excellent yields （up to 〉99%）. When the intermediate is trapped, a ＂double successive SN2 reactions＂ mechanism is proved.

关键词： Double successive SN2 reactions Acylal Anilines Methylene diester

Quartz-Hosted Fluid Inclusions Characteristics and Their Implications for Fluvial Deposits along the Changjiang River

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Journal of Earth Science 2020年第3期31卷 571-581页

作者： Zhenqiang Ji Chendong ge Mengyang Zhou nan Zhang Key Laboratory of Coast and Island Development(nanjing University)of Ministry of Education Key Laboratory of Coast and Island Development ofJiangsu ProvinceSchool of Geography and Ocean ScienceNanjing UniversityNanjing 210023China

The characteristics of quartz-hosted fluid inclusions in fluvial sediments from five locations in the upstream,midstream,and estuary of the Changjiang River,China,are *** sources of sediments are discussed concerning their differences in the shape,size,number,gas percentage and genetic type of quartz-hosted fluid *** upstream to downstream,the characteristics of quartz-hosted fluid inclusions in sediments are *** fluid inclusion types in the samples from upstream to estuary are gradually *** sediment influx from the tributaries of the Changjiang River makes new types of quartz-hosted fluid inclusions in the downstream and *** terms of the number and size,most quartz-hosted fluid inclusions are concentrated in the range of 2-4μm in diameters and 10-150 in number per 10^-3 mm^*** number and size ranges of the fluid inclusions from different positions are also *** fluid inclusions in the sample collected from the Shigu,upstream of the Changjiang River,are 2-18μm in size,with the number of 2-166 per 10^-3 mm^*** the samples collected from Yibin,Yichang and Wuhan,the sizes of fluid inclusions are 2-15,2-10,2-12μm,with the number of 1-270,2-220,and 1^-308 per 10^-3 mm^3,*** proportion of primary fluid inclusions in the sample of the upstream(14%)is higher than that of the midstream(6%-8%)and the estuary(5%),suggesting that different types of source rocks have been input into the river by the *** characteristics of quartz-hosted fluid inclusions in the fluvial sediments could offer a new perspective for exploration of the source of sediments.

关键词： quartz-hosted fluid inclusions morphological characteristics fluid inclusion types source of fluvial sediments Changjiang River

Finite-horizon resilient state estimation for complex networks with integral measurements from partial nodes

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Science China(Information Sciences) 2022年第3期65卷 167-181页

作者： nan HOU Jiahui LI Hongjian LIU Yuan ge Hongli DONG Artificial Intelligence Energy Research Institute Northeast Petroleum University Heilongjiang Provincial Key Laboratory of Networking and Intelligent Control Northeast Petroleum University Key Laboratory of Advanced Perception and Intelligent Control of High-end Equipment Ministry of EducationAnhui Polytechnic University School of Electrical Engineering Anhui Polytechnic University

This paper proposes a finite-horizon state estimation method for a kind of complex network that suffers from randomly occurring gain variations. The method involves utilizing integral measurements from a portion of nodes in such complex networks. Integral measurements are carried out to characterize time delays that occur in signal acquisition together with real-time signal processing. Measurements from only partial nodes reflect the fact that signals of several sensors are unacquirable. A Gaussian random variable is utilized to depict the random appearance of gain variations during the practical implementation of estimators. The aim of this paper is to construct finite-horizon resilient estimators for complex networks in view of integral measurements from a portion of nodes that fulfill the specified H∞ performance demand involving a specified disturbance attenuation level. Necessary and sufficient conditions are put forward to ensure that such ideal estimators exist by employing stochastic analysis as well as using the completing squares method. The gain parameters of the finite-horizon estimators are expressed by adopting the Moore-Penrose pseudoinverse and acquired through solving the solutions to a group of coupled backward recursive Riccati difference equations with constraint conditions. A confirmatory instance is carried out that demonstrates the feasibility of the newly developed estimation algorithm.

关键词： complex networks finite-horizon H∞ partial-nodes-based state estimation gain variations backward recursive Riccati difference equations integral measurements

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Searching forγ-ray counterparts to very faint X-ray transient neutron star binaries

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Research in Astronomy and Astrophysics 2018年第9期18卷 47-52页

作者： ge-ge wang Zhong-Xiang wang Shanghai Astronomical Observatory Chinese Academy of SciencesShanghai 200030China University of Chinese Academy of Sciences Beijing 100049China

Very faint X-ray transients （VFXTs） are a group of X-ray binaries with low luminosities, displaying peak X-ray luminosities during their outbursts of only 1034-1036 erg s^-1. Using γ-ray data obtained with the Large Area Telescope （LAT） onboard the Fermi Gamma-Ray Space Telescope （Fermi）, we investigate their possible nature of containing rotation-powered pulsars, or more specifically being transitional millisecond pulsars （MSPs）. Among more than 40 known VFXTs, we select 12 neutron star systems. We analyze the LAT data for the fields of 12 VFXTs in the energy range 0.2-300geV, but do not find any counterparts likely detected by Fermi. We obtain luminosity upper limits for the 12 sources. While the distances to the sources are largely uncertain, the upper limits are comparable to the luminosities of two transitional systems, PSR J1023-0038 and XSS J12270-4859. From our study, we conclude that no evidence is found at γ-rays for the suggestion that some VFXTs could contain rotation-powered MSPs （or be transitional MSP systems）.

关键词： stars pulsars - stars binaries - gamma rays stars

Improved electrochemical performance of Li(Ni0.6Co0.2Mn0.2)O2 at high charging cut-off voltage with Li1.4Al0.4Ti1.6（PO4）3 surface coating

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Chinese Physics B 2019年第6期28卷 446-452页

作者： Yi wang Bo-nan Liu ge Zhou Kai-Hui Nie Jie-nan Zhang Xi-Qian Yu Hong Li Key Laboratory for Renewable Energy Beijing Key Laboratory for New Energy Materials and DevicesBeijing National Laboratory for Condensed Matter PhysicsInstitute of PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100190China IOPSILION Co. Ltd.Liyang 213300China

Ba0.8Sr0.2FeO3-δhas been surface-modified by the lithium-ion conductor Li1.4Al0.4Ti1.6(PO4)3via a facile mechanical fusion method. The annealing temperature during coating process shows a strong impact on the surface morphology and chemical composition of Li(Ni0.6 Co0.2 Mn0.2)O2. The 600-?C annealed material exhibits the best cyclic stability at high charging cut-off voltage of 4.5 V(versus Li+/Li) with the capacity retention of 90.9% after 100 cycles, which is much higher than that of bare material(79%). Moreover, the rate capability and thermal stability are also improved by Li1.4Al0.4Ti1.6(PO4)3coating. The enhanced performance can be attributed to the improved stability of interface between Ba0.8Sr0.2FeO3-δand electrolyte by Li1.4Al0.4Ti1.6(PO4)3modification. The results of this work provide a possible method to design reliable cathode materials to achieve high energy density and long cycle life.

关键词： lithium-ion batteries cathode Ni-rich oxide solid electrolyte coating

Effects of volumetric fraction and included angle of composite particles on the discharge of binary mixtures in hoppers

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Particuology 2020年第4期18卷 80-90页

作者： Liange ge nan Gui Xingtuan Yang Jiyuan Tu Shengyao Jiang Institute of Nuclear and New Energy Technology Collaborative Innovation Center of Advanced Nuclear Energy TechnologyKey Laboratory of Advanced Reactor Engineering and SafetyMinistry of EducationTsinghua UniversityBeijing 100084China School of Engineering RMIT UniversityMelbourneVIC 3083Australia

The discharge behavior of particles is important in many industrial applications,such as in the core of a pebble bed reactor,which uses a hopper bed filled with many large *** this work,a mixture composed of two particle types,freely discharged from a pebble bed,is simulated using the discreteelement *** is a spherical pebble of diameter equal to that of the fuel pebble of the *** other is a composite particle comprising three spherical pebbles bonded *** included angleαof the three pebbles characterized the particle conformation,which may affect the discharge behavior of the *** effects of volume fraction of the multi-sphere x(equivalent to the number fraction)on the discharge are also *** patterns,number flow rate,discharge velocity,and mean force of the mixture are computed to help in revealing discharge *** results show that increasing eitherαor x reduces the discharge flow *** and correlations give a quantitative evaluation of the independent effects ofαand *** analysis of velocity and force explains the mechanism relevant to the main influencing factorsαand *** results are helpful in gaining a better understanding of the discharge feature of binary mixtures and in providing a quantitative evaluation of the discharge behavior of the reactor core,especially adverse failure conditions.

关键词： Pebble flow Particle flow Discharge flow Hopper bed Binary mixture Discrete element method

The discovery of a quantum Griffiths singularity in superconducting films

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National Science Review 2016年第4期3卷 395-396页

作者： nan-Lin wang International Center for Quantum Materials School of PhysicsPeking University

More than 40 years ago,Robert B Griffiths proposed that phase transitions can be dramatically changed by a disorder effect and,in particular,that it is possible for the dynamical critical exponent to diverge[1].Since that time,this theory has been applied to quantum phase transitions(QPTs)and has been developed into the concept of the quantum Griffiths ***,the primary

关键词： very SMT The discovery of a quantum Griffiths singularity in superconducting films

On the determination of particle impact breakage in selection function

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Particuology 2022年第6期20卷 117-132页

作者： Li ge wang Ruihuan ge Xizhong Chen Process Systems Enterprise HammersmithLondonUK Department of Chemical and Biological Engineering University of SheffieldUK Process and Chemical Engineering School of EngineeringUniversity College CorkIreland

This paper presents a thorough study of particle impact breakage in selection function with a unified breakage *** impact mode and breakage pattern for particulate materials are classified based on a significant review of well-established impact *** was found that the lack of a unified breakage criterion to determine the breakage probability disables a direct comparison of particle breakage propensity from different impact loading *** literature breakage models to describe the breakage probability are reviewed where the advantage and drawback of these models are *** sourced literature breakage models are compared with the zeolite breakage datasets in a unified breakage criterion to evaluate the model performance.A novel computational modelling workflow for a milling process is proposed to provide a guidance in implementing the digital twin in milling process *** breakage probability models,*** selection functions are comprehensively assessed in population balance model to examine the model *** model simplicity and fidelity in the model assessment are specifically discussed and the value of digital twin in substantially reducing the experimental trials is highlighted.

关键词： Impact breakage Breakage criteria Breakage model assessment Selection function Population balance model Digital twin

Boosting charge extraction and efficiency of inverted perovskite solar cells through coordinating group modification at the buffer layer/cathode interface

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nano Research 2025年第1期18卷 415-423页

作者： Zhiqing Liang Ziqiu Ren Ziyu wang nan Yan Ling Li Bo Zhang Yanlin Song College of Chemistry Zhengzhou UniversityZhengzhou 450052China Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education Shaanxi Key Laboratory for Advanced Energy DevicesShaanxi Engineering Lab for Advanced Energy Technology School of Materials Science and EngineeringShaanxi Normal UniversityXi’an 710119China Key Laboratory of Green Printing Institute of ChemistryChinese Academy of Sciences(ICCAS)Beijing Engineering Research Center of Nanomaterials for Green Printing TechnologyNational Laboratory for Molecular Sciences(BNLMS)Beijing 100190China

In inverted perovskite solar cells (PSCs),effective modification of the interface between the metalcathode and electron transport layer (ETL) is crucial forachieving high performance and stability. Herein, sulfonatedbathocuproine, commonly known as disodium bathocuproinedisulfonate (BCDS), was employed as a cathode buffer layerto address the interfacial issues at the [6,6]-phenyl-C61-butyricacid methyl ester (PCBM)/Ag interface. BCDS possesses theability to form coordinate bonds with Ag electrodes. Theutilization of the BCDS buffer layer enhanced the chargeextraction capability at the cathode interface whilesimultaneously achieving interfacial defect passivation,improving interfacial contact and increasing the built-in electricfield. Consequently, a power conversion efficiency (PCE) of25.06% was achieved. Furthermore, owing to the excellent filmforminguniformity of BCDS on PCBM, the stability of thedevice was also improved. After storage in dry air for morethan 2000 h, the device maintained 96% of its initial efficiency. This work underscores the remarkable potential of tailoringcoordination groups to enhance charge extraction efficiency at the ETL-cathode interface, unveiling a promising newfrontier in buffer layer development and performance optimization strategies for PSCs.

关键词： perovskite solar cells buffer layer bathocuproine disulfonate coordination group modification electron transport layer(ETL)-cathode interface