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Solid-liquid Metastable Equilibria in Quaternary System (NaCl+Na_2CO_3+Na_2SO_4+H_2O) at 273.15 K

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Chemical Research in Chinese Universities 2010年第1期26卷 114-117页

作者： WANG Rui-lin zeng Ying Department of Chemical Engineering Chengdu University of Technology Chengdu 610059 P. R. China

The metastable phase equilibria of the quaternary system NaCl＋Na2CO3＋Na2SO4＋H2O were studied at 273.15 K. The salts＇ solubilities, densities and pH values of the equilibrated solution in this system were determined. According to the experimental data, the metastable equilibrium phase diagram, the diagram of density vs. composition and pH vs. composition diagram were plotted. The phase diagram consists of five univariant curves, four crystallization fields and two invariant points. The four crystallization fields correspond to sodium carbonate decahydrate （Na2CO3·10H2O）, sodium sulfate decahydrate（Na2SOn-10H2O）, sodium chloride（NaCl） and burkeite（2Na2SO4. Na2CO3）, respectively. The crystallization field of sodium sulfate decahydrate（Na2SO4.10H2O） is the largest, which indicates that sodium sulfate is easy to saturate and crystallize from solution at 273.15 K.

关键词： Quaternary system Metastable phase equilibrium Sulfate

Post-evaluation of a water pollution control plan： methodology and case study

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Frontiers of Environmental Science & Engineering 2015年第4期9卷 712-724页

作者： lin zeng Xin DONG Siyu zeng Tianzhu ZHANG Jing LI Jining CHEN School of Environment Tsinghua University Beijing 100084 China

China has developed more than 20 water pollution control plans for river basins （RBWPs） since 1996. However, the implementation has generally lagged. This paper proposes a three-step, post-evaluation methodology to analyze the implementation result of a RBWP and its influential factors. First, a multi-attribute evaluation method based on an index system is established to score the enforcement results of a RBWP. Indicators measure how well a RBWP has achieved its objectives, which include water quality compliance, pollution load control, project construction, financial inputs, and related management requirements. Second, an interpretive structural model is used to detect the significant factors that affect RBWP implementation. This model can effectively analyze the cause-effect chain and hierarchical relationship among variables. Five groups of factors were identified, namely, plan preparation, water resource endowment, policy, institution, and management. Both qualitative and quantitative methods are employed in the third step to evaluate the extent to which these factors have influenced the execution result of a RBWP, including pre-post contrast, scenario analysis, and correlation analysis. This research then post-evaluated the implementation of the Huai River Basin water pollution control plans （H-RBWPs） over a period of 10 years as a case study. Results showed that the implementation of the H-RBWPs was unsatisfactory during 2001–2005, although it improved during 2006–2010. The poor execution of these plans was partially caused by the underestimation of regional economic development in combination with ineffective industrial structure adjustment policies. Therefore, this case study demonstrates the feasibility and flexibility of the proposed post-evaluation methodology.

关键词： river basin water pollution control plan postplan evaluation multi-attribute comprehensive evaluation,interpretive structural model combined qualitative/quantitative method

Achieving better aqueous rechargeable zinc ion batteries with heterostructure electrodes

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Nano Research 2021年第9期14卷 3174-3187页

作者： Buke Wu Wen Luo Ming Li lin zeng Liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Department of Mechanical and Energy Engineering Southern University of Science and TechnologyShenzhen 518055China Department of Physics School of ScienceWuhan University of TechnologyWuhan 430070China Guangdong Provincial Key Laboratory of Energy Materials for Electric Power Southern University of Science and TechnologyShenzhen 518055China Key Laboratory of Energy Conversion and Storage Technologies(Southern University of Science and Technology) Ministry of EducationShenzhen 518055China Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Xianhu hydrogen ValleyFoshan 528200China

Aqueous rechargeable zinc ion batteries(ARZIBs)have received unprecedented attention owing to the low cost and high-safety ***,their further development and application are hindered by the issues of electrodes such as cathode dissolution,zinc anode dendrite,passivation,as well as sluggish reaction *** heterostructure electrodes is a powerful method to improve the electrochemical performance of electrodes by grafting the advantages of functional materials onto the active *** this review,various modified heterostructure electrodes with optimized electrochemical performance and wider applications are ***,the synergistic effect between active materials and functional materials are also in-depth *** specific modification methods are divided into interphase modification(electrode-electrolyte interphase and electrode-current collector interphase)and structure ***,the conclusion and future perspective on the optimization mechanism of functional materials,and the cost issue of practical heterostructure electrodes in ARZIBs are also *** is expected that this review can promote the further development of ARZIBs towards practical utility.

关键词： zinc ion battery heterostructure electrodes interphase modification structure optimization

In situ preparation of g-C3N4/Bi4O5I2 complex and its elevated photoactivity in Methyl Orange degradation under visible light

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Journal of Environmental Sciences 2020年第1期32卷 149-162页

作者： Zhe Feng lin zeng Qingle Zhang Shifeng Ge Xinyue Zhao Hongjun lin Yiming He Department of Materials Science and Engineering Zhejiang Normal UniversityJinhua 321004China College of Chemistry and Life Sciences Zhejiang Normal UniversityJinhua 321004China Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Institute of Physical ChemistryZhejiang Normal UniversityJinhua 321004China

A graphite carbon nitride(g-C3N4)modified Bi4O5I2 composite was successfully prepared insitu via the thermal treatment of a g-C3N4/Bi OI precursor at 400°C for 3 *** as-prepared g-C3N4/Bi4O5I2 showed high photocatalytic performance in Methyl Orange(MO)degradation under visible *** best sample presented a degradation rate of 0.164 min^-1,which is 3.2 and 82 times as high as that of Bi4O5I2 and g-C3N4,*** g-C3N4/Bi4O5I2 was characterized by X-ray powder diffractometer(XRD),scanning electron microscopy(SEM),transmission electron microscopy(TEM),Raman,X-ray photoelectron spectroscopy(XPS),ultraviolet-visible diffuse reflectance spectra(DRS),electrochemical impedance spectroscopy(EIS)and transient photocurrent response in order to explain the enhanced *** indicated that the decoration with a small amount of g-C3N4 influenced the specific surface area only ***,the capability for absorbing visible light was improved measurably,which was beneficial to the MO *** top of that,a strong interaction between g-C3N4 and Bi4O5I2 was *** interplay promoted the formation of a favorable heterojunction structure and thereby enhanced the charge ***,the g-C3N4/Bi4O5I2 composite presented greater charge separation efficiency and much better photocatalytic performance than ***,g-C3N4/Bi4O5I2 also presented high stability.·O2^- and holes were verified to be the main reactive species.

关键词： g-C3N4 Bi4O5I2 Methyl Orange degradation Heterojunction Visible light

cDNA cloning of a novel lectin that induce cell apoptosis from Artocarpus hypargyreus

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Chinese Journal of Natural Medicines 2021年第2期19卷 81-89页

作者： LUO Yu zeng lin-Jie LIU Xiao-Qin LI Lu zeng Qi-Yan Department of Biochemistry and Molecular Biology Guangxi Medical UniversityNanning 530021China Department of Orthopaedics Chinese and Western Orthopaedics Hospital of GuigangGuigang 537100China

We isolated a novel lectin(AHL)from Artocarpus hypargyreus Hance and showed its immunomodulatory *** this study,the amino acid sequence of AHL was determined by cDNA *** cDNA(875bp)contains a 456-bp open reading frame(ORF),which encodes a protein with 151 amino *** is a new member of jacalin-related lectin family(JRLs),which share high sequence similarities to KM+and Morniga M,and contain the conserved carbohydrate binding *** antitumor activity of AHL was also explored using Jurkat T cell *** exhibits a strong binding affinity to cell membrane,which can be effectively inhibited by methyl-α-*** inhibits cell proliferation in a time-and dose-dependent manner through apoptosis,evidenced by morphological changes,phosphatidylserine externalization,poly ADP-ribose polymerase(PARP)cleavage,Bad and Bax up-regulation,and caspase-3 *** further showed that the activation of ERK and p38 signaling pathways is involved for the pro-apoptotic effect of AHL.

关键词： Lectin cDNA cloning Apoptosis Antitumor drug Artocarpus hypargyreus

An L^0(F,R)-valued Function's Intermediate Value Theorem and Its Applications to Random Uniform Convexity

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Acta Mathematica Sinica,English Series 2012年第5期28卷 909-924页

作者： Tie Xin GUO Xiao lin zeng LMIB and School of Mathematics and Systems Science Beihang University College of Mathematics and Statistics Chongqing Technology and Business University

Let （Ω, F, P） be a probability space and L0（F,R） the algebra of equivalence classes of real- valued random variables on （Ω, F, P）. When L0（F,R） is endowed with the topology of convergence in probability, we prove an intermediate value theorem for a continuous local function from L0（F, R） to L0（F,R）. As applications of this theorem, we first give several useful expressions for modulus of random convexity, then we prove that a complete random normed module （S, ｜｜·｜｜） is random uniformly convex iff LP（S） is uniformly convex for each fixed positive number p such that 1 〈 p 〈＋∞.

关键词： L0(F R)-valued function intermediate value theorem random normed module random uniform convexity modulus of random convexity

Multilevel carbon architecture of subnanoscopic silicon for fast‐charging high‐energy‐density lithium‐ion batteries

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Carbon Energy 2024年第4期6卷 256-268页

作者： Meisheng Han Yongbiao Mu Lei Wei lin zeng Tianshou Zhao Shenzhen Key Laboratory of Advanced Energy Storage Southern University of Science and TechnologyShenzhenChina SUSTech Energy Institute for Carbon Neutrality Southern University of Science and TechnologyShenzhenChina Department of Mechanical and Energy Engineering Southern University of Science and TechnologyShenzhenChina

Silicon(Si)is widely used as a lithium‐ion‐battery anode owing to its high capacity and abundant crustal ***,large volume change upon cycling and poor conductivity of Si cause rapid capacity decay and poor fast‐charging capability limiting its commercial ***,we propose a multilevel carbon architecture with vertical graphene sheets(VGSs)grown on surfaces of subnanoscopically and homogeneously dispersed Si–C composite nanospheres,which are subsequently embedded into a carbon matrix(C/VGSs@Si–C).Subnanoscopic C in the Si–C nanospheres,VGSs,and carbon matrix form a three‐dimensional conductive and robust network,which significantly improves the conductivity and suppresses the volume expansion of Si,thereby boosting charge transport and improving electrode *** VGSs with vast exposed edges considerably increase the contact area with the carbon matrix and supply directional transport channels through the entire material,which boosts charge *** carbon matrix encapsulates VGSs@Si–C to decrease the specific surface area and increase tap density,thus yielding high first Coulombic efficiency and electrode compaction ***,C/VGSs@Si–C delivers excellent Li‐ion storage performances under industrial electrode *** particular,the full cells show high energy densities of 603.5 Wh kg^(−1)and 1685.5 Wh L^(−1)at 0.1 C and maintain 80.7%of the energy density at 3 C.

关键词： fast charging high energy densities lithium‐ion batteries multilevel carbon architecture subnanoscopic silicon anode

Towards Efficient Short-Range Pair Interaction on Sunway Many-Core Architecture

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Journal of Computer Science & Technology 2021年第1期36卷 123-139页

作者： Jun-Shi Chen Hong An Wen-Ting Han zeng lin Xin Liu School of Computer Science and Technology University of Science and Technology of ChinaHefei 230026China National Research Center of Parallel Computer Engineering and Technology Beijing 100080China

The short-range pair interaction consumes most of the CPU time in molecular dynamics(MD)*** inherent computation sparsity makes it challenging to achieve high-performance kernel on the emerging many-core *** this paper,we present a highly efficient short-range force kernel on the Sunway,a novel many-core architecture with many unique *** parallel efficiency of this algorithm on the Sunway many-core processor is strongly limited by the poor data locality and write *** enhance the data locality,we adopt a super cluster based neighbor list with an appropriate granularity that fits in the local memory of computing *** the absence of a low overhead locking mechanism,using data-privatization force array is a more feasible method to avoid write conflicts,but results in the large overhead of data *** adopt a dual-slice partitioning scheme for both hardware resources and computing tasks,which utilizes the on-chip data communication to reduce data reduction overhead and provide load ***,we exploit the single instruction multiple data(SIMD)parallelism and perform instruction reordering of the force kernel on this many-core *** experimental results show that the optimized force kernel obtains a performance speedup of 226x compared with the reference implementation and achieves 20%of peak flop rate on the Sunway many-core processor.

关键词： molecular dynamics sunway many-core pair interaction parallel algorithm

An Approach to Determination of Phenolic Compounds in Seawater using SPME-GC-MS Based on SWCNTs Coating

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Journal of Ocean University of China 2016年第4期15卷 655-659页

作者： ZHU Jia WANG Ying zeng lin School of Geographic and Oceanographic Sciences Nanjing University Nanjing 210008 P. R. China Third Institute of Oceanography SOA Xiamen 361005 P. R. China

Phenolic compounds have become one kind of the important pollutants of the marine environment. Single-walled Carbon nanotubes, as one-dimensional nano materials, have light weight and perfect hexagonal structure of connections, with many unusual mechanical, chemical and electrical properties. In recent years, with the research of carbon nanotubes and other nano materials, the application prospect is also constantly discussed. In this paper, homemade single-walled carbon nanotubes(SWCNTs) coating was used for establishing an analytical approach to the determination of five kinds of phenolic compounds in seawater using SPME-GC-MS. Optimal conditions: After saturation was conducted with Na Cl, and p H was adjusted to 2.0 with H_2SO_4, the extract was immersed in a water bath at 40 for GC℃-MS determination through 40-min agitating extraction at 500 rmin^(-1) and 3-min desorption at 280℃. The liniearities ranged between 0.01-100 μg L^(-1), and the determination limits ranged between 1.5-10 ngL^(-1). The relative standard deviation(RSD, n = 5) was less than 6.5%. For the phenolic compounds obtained from the spiked recovery test for actual seawater samples, the rates of recovery were 87.5%-101.7%, and the RSDs were less than 8.8%, which met the requirements of determination. Due to its simplicity, high efficiency and low consumption, this approach is suitable for the analysis of trace amounts of phenolic compounds in marine waters.

关键词： SWCNTs nanotubes walled hexagonal SPME ranged simplicity immersed seawater establishing