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Achieving both high reversible and stable Zn anode by a practical glucose electrolyte additive toward highperformance Zn-ion batteries

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Rare Metals 2022年第2期41卷 356-360页

作者： ming Song Cheng-lin Zhong College Materials and Chemical Engineering Xuzhou University of TechnologyXuzhou 221018China College of Chemistry and Chemical Engineering Linyi UniversityLinyi 276000China

Aqueous Zn-ion batteries(ZIBs)featuring safety,affordability and high energy density may provide a promising solution to the demand for better energy storage *** with high electrochemical performances rely on a stable and reversible Zn metal negative *** side reactions such as the hydrogen evolution reaction(HER)at the anode-electrolyte interface are responsible for the low reversibility,and uneven Zn deposition/dissolution gives rise to the instability of Zn ***,a facile and scalable method of regulating electrolytes has been proposed by Chao and his co-works through adding a lowcost,safe and environmentally-friendly electrolyte additive:*** calculations and experimental studies reveal that the glucose not only suppresses side reactions by modulating the solvated shell of Zn^(2+)but also homogenizes Zn deposition/dissolution through forming a special local absorption *** bi-functional electrolyte additive endows the Zn anode with both high reversibility and stability,which efficiently improves the performances of *** work explores a promising electrolyte strategy for realizing the large-scale application of ZIBs.

关键词： electrolyte additive anode

Microfluidics-based single cell sequencing:moving towards more physiological analysis

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Science China Chemistry 2022年第2期65卷 207-209页

作者： Shuo Feng Jin-ming lin Department of Chemistry Beijing Key Laboratory of Microanalytical Methods and InstrumentationKey Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology(Ministry of Education)Tsinghua UniversityBeijing 100084China

Single cell assays provide an unprecedented resource for exploring life health and disease research,and play a fundamental role in human protein atlas(HPA)and human genome project(HGP).Heterogeneity,the central focus of single-cell analysis,is defined with the various performances on the morphology,function,composition and gene even in a same scope of cell types.

关键词： analysis moving fluid

Experiment on microscale flames stabilized on surface of annular porous media

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航空动力学报 2017年第12期32卷 2955-2963页

作者： lin Peihua lin Yuzhen xue Xin ZHANG Liang ZHANG Chi National Key Laboratory of Science and Technology on Aero-Engine Aero-thermodynamics School of Energy and Power EngineeringBeijing University of Aeronautics and AstronauticsBeijing 100191China

The characteristics of the surface-stabilized flame on a porous medium in an annular microscale channel were studied experimentally with methane/air *** the pressure drop characteristic study,three porous media with the same pore diameter and different porosities were used and *** substitution of the air for the mixture was verified accurately at *** the relationship expression of the air pressure drop characteristic was acquired for each porous medium according to the Forcheimer *** third porous medium was selected for the following research,as it had the expression closer to the Darcy's *** for the ignition characteristic study of the surface-stabilized flame,a reasonable criterion was established for the flammability limit *** on the criterion,the result showed that the limit reached the minimum value when the mixture equivalence ratio was *** the extinction characteristic study,through the well-designed operating procedure,the experiment was conducted to obtain the strict extinction limit of the surfacestabilized *** was indicated that the extinction limit at mixture equivalence ratio of 0.8 was the least.

关键词：高旋转数通道转角梯形回转通道换热特性

A Concentration Behavior for Semilinear Elliptic Systems with Indefinite Weight

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Acta Mathematica Sinica,English Series 2014年第12期30卷 2014-2026页

作者： xue Xiu ZHONG Wen ming ZOU Department of Mathematical Sciences Tsinghua University

Consider the Schrodinger system{-Δu＋V1,nu=αQn（x）︱u︱^α-2u︱v︱^β,-Δv＋V2,nv=βQn（x）︱u︱^α︱v︱^β-2v,u,v∈H0^1（Ω） where Ωbelong to R^N,α,β〉 1,α ＋ β〈 2^＊ and the spectrum σ（-△ ＋ V（i,n））（0,＋∞）,i = 1,2;Qn is a bounded function and is positive in a region contained in Ω and negative ***,the sets{Qn 〉 0} shrink to a point x0∈ Ω as n→＋∞.We obtain the concentration ***,we first show that the system has a nontrivial solution（un,vn） corresponding to Qn,then we prove that the sequences（un） and（vn） concentrate at x0 with respect to the H^***,if the sets {Qn 〉 0} shrink to finite points and（un,vn） is a ground state solution,then we must have that both un and vn concentrate at exactly one of these ***,the concentration of un and vn occurs at the same ***,we generalize the results due to Ackermann and Szulkin[*** ***.,207,1075-1089（2013）].

关键词： Schrodinger systems concentration ground state solution

Convective Initiation by Topographically Induced Convergence Forcing over the Dabie Mountains on 24 June 2010

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Advances in Atmospheric Sciences 2016年第10期33卷 1120-1136页

作者： Qiwei WANG ming xue Zhemin TAN Key Laboratory of Mesoscale Severe Weather and School of Atmospheric Sciences Nanjing University Center for Analysis and Prediction of Storms and School of Meteorology University of Oklahoma

The initiation of convective cells in the late morning of 24 June 2010 along the eastward extending ridge of the Dabie Mountains in the Anhui region, China, is studied through numerical simulations that include local data assimilation. A primary convergence line is found over the ridge of the Dabie Mountains, and along the ridge line several locally enhanced convergence centers preferentially initiate convection. Three processes responsible for creating the overall convergence pattern are identified. First, thermally-driven upslope winds induce convergence zones over the main mountain peaks along the ridge, which are shifted slightly downwind in location by the moderate low-level easterly flow found on the north side of a Mei-yu front. Second, flows around the main mountain peaks along the ridge create further convergence on the lee side of the peaks. Third, upslope winds develop along the roughly north-south oriented valleys on both sides of the ridge due to thermal and dynamic channeling effects, and create additional convergence between the peaks along the ridge. The superposition of the above convergence features creates the primary convergence line along the ridge line of the Dabie Mountains. Locally enhanced convergence centers on the primary line cause the initiation of the first convection cells along the ridge. These conclusions are supported by two sensitivity experiments in which the environmental wind （dynamic forcing） or radiative and land surface thermal forcing are removed, respectively. Overall, the thermal forcing effects are stronger than dynamic forcing given the relatively weak environmental flow.

关键词： Dabie Mountains convective initiation low-level convergence line thermal forcing dynamic forcing

Dependence of large SEP events with different energies on the associated flares and CMEs

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Research in Astronomy and Astrophysics 2017年第12期17卷 41-52页

作者： Gui-ming Le xue-Feng Zhang Key Laboratory of Space Weather National Center for Space WeatherChina Meteorological Administration School of Computer Science Anhui University of Technology

To investigate the dependence of large gradual solar energetic particle（SEP） events on the associated flares and coronal mass ejections（CMEs）, the correlation coefficients（CCs） between peak intensities of E 〉 10 MeV（I10）, E 〉 30 MeV（I30） and E 〉 50 MeV（I50） protons and soft X-ray（SXR） emission of associated flares and the speeds of associated CMEs in the three longitudinal areas W0–W39, W40–W70（hereafter the well connected region） and W71–W90 have been *** correlation analysis shows that CCs between SXR emission and peak intensities of SEP events always reach their largest value in the well connected region and then decline dramatically in the longitudinal area outside the well connected region, suggesting that they may contribute to the production of SEPs in large SEP events. Both classical and partial correlation analyses show that SXR fluence is a better parameter describing the relationship between flares and SEP events. For large SEP events with source location in the well connected region, the CCs between SXR fluence and I10, I30 and I50 are0.58±0.12, 0.80±0.06 and 0.83±0.06 respectively, while the CCs between CME speed and I10, I30 and I50 are 0.56±0.12, 0.52±0.13 and 0.48±0.13 respectively. The partial correlation analyses show that in the well connected region, both CME shock and SXR fluence can significantly affect I10, but SXR peak flux makes no additional contribution. For E 〉 30 MeV protons with source location in the well connected region, only SXR fluence can significantly affect I30, and the CME shock makes a small contribution to I30, but SXR peak flux makes no additional contribution. For E 〉 50 MeV protons with source location in the well connected region, only SXR fluence can significantly affect I50, but both CME shock and SXR peak flux make no additional contribution. We conclude that these findings provide statistical evidence that for SEP events with source locations in the well connected region, a CME shock is only an effect

关键词： Sun:coronal mass ejections(CMEs) Sun:flares (Sun:)particle emission

Applications of covalent organic frameworks(COFs)：From gas storage and separation to drug delivery

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Chinese Chemical Letters 2017年第6期28卷 1135-1143页

作者： ming-xue Wu Ying-Wei Yang International Joint Research Laboratory of Nano-Micro Architecture Chemistry (NMAC) College of Chemistry Jilin University Changchun 130012 China

Covalent organic frameworks（COFs） are an emerging class of porous covalent organic structures whose backbones were composed of light elements（B,C,N,O,Si） and linked by robust covalent bonds to endow such material with desirable properties,i.e.,inherent porosity,well-defined pore aperture,ordered channel structure,large surface area,high stability,and *** expected,the abovementioned properties of COFs broaden the applications of this class of materials in various fields such as gas storage and separation,catalysis,optoelectronics,sensing,small molecules adsorption,and drug *** this review,we outlined the synthesis of COFs and highlighted their applications ranging from the initial gas storage and separation to drug delivery.

关键词： Covalent organic frameworks Drug delivery Porous materials Synthesis

Impact of 4DVAR Assimilation of Rainfall Data on the Simulation of Mesoscale Precipitation Systems in a Mei-yu Heavy Rainfall Event

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Advances in Atmospheric Sciences 2007年第2期24卷 281-300页

作者：储可宽谈哲敏 ming xue Key Lab of Mesoscale Severe Weather/MOE and Department of Atmospheric Sciences Nanjing University Nanjing 210093 School of Meteorology and Center for Analysis and Prediction of Storms University of OklahomaNorman OK 73019 USA

The multi-scale weather systems associated with a mei-yu front and the corresponding heavy precipitation during a particular heavy rainfall event that occurred on 4 5 July 2003 in east China were successfully simulated through rainfall assimilation using the PSU/NCAR non-hydrostatic, mesoscale, numerical model （MM5） and its four-dimensional, variational, data assimilation （4DVAR） system. For this case, the improvement of the process via the 4DVAR rainfall assimilation into the simulation of mesoscale precipitation systems is investigated. With the rainfall assimilation, the convection is triggered at the right location and time, and the evolution and spatial distribution of the mesoscale convective systems （MCSs） are also more correctly simulated. Through the interactions between MCSs and the weather systems at different scales, including the low-level jet and mei-yu front, the simulation of the entire mei-yu weather system is significantly improved, both during the data assimilation window and the subsequent 12-h period. The results suggest that the rainfall assimilation first provides positive impact at the convective scale and the influences are then propagated upscale to the meso- and sub-synoptic scales. Through a set of sensitive experiments designed to evaluate the impact of different initial variables on the simulation of mei-yu heavy rainfall, it was found that the moisture field and meridional wind had the strongest effect during the convection initialization stage, however, after the convection was fully triggered, all of the variables at the initial condition seemed to have comparable importance.

关键词： 4DVAR rainfall assimilation impact mesoscale convective system mei-yu heavy rainfall

The Structure and Evolution of Sea Breezes During the Qingdao Olympics Sailing Test Event in 2006

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Advances in Atmospheric Sciences 2009年第1期26卷 132-142页

作者：盛春岩 ming xue 高守亭 Shandong Provincial Meteorological Observatory Jinan Shangdong 250031 Shandong Provincial Meteorological Institute Jinan Shangdong 250031 School of Meteorology University of Oklahoma NoThan Oklahoma 73072 USA Center for Analysis and Prediction of Storms University of Oklahoma Norman Oklahoma 73072 USA Laboratory of Cloud-Precipitation Physics and Severe Storms institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029

Using data from automatic surface weather stations, buoys, lidar and Doppler, the diurnal variation and the three-dimensional structure of the sea breezes near the sailing sites of the Good Luck Beijing- 2006 Qingdao International Regatta from 18 to 31 August 2006 are analyzed. Results show that excluding rainy days and days affected by typhoon, the sea breezes occur nearly every day during this period. When Qingdao is located at the edge of the subtropical high at 500 hPa, the sea breeze is usually stronger, around 3-4 m s^-1. It starts at around 1100 to 1300 LST and lasts about 6 hours. The direction of the sea breeze tends to be southeasterly. When Qingdao is under the control of the subtropical high, the sea breeze is usually weaker, less than 2.5 m s^-1 throughout the day, and begins later, between 1300 and 1500 LST. In this case, the direction of the sea breeze is variable from easterly to southeasterly. Most sea breezes in Qingdao are very shallow, up to 300 meters deep. Strong sea breezes can reach 1.5 km in depth and can push as far as 100 km inland. If the Huanghai sea breeze moves inland and meets the sea breeze of the Jiaozhou Bay in the western part of Qingdao, the sea breeze will strengthen and form three boundaries due to the interaction of the two sea breezes.

关键词： Olympic sailing sea breeze local coastal winds