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Polyoxometalate derived p-n heterojunction for optimized reaction interface and improved HER

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Chinese Chemical Letters 2023年第3期34卷 494-497页

作者： xiaoli cui Yunmeng Sun Xinxin Xu Department of Chemistry College of ScienceNortheastern UniversityShenyang 110819China Institute for Frontier Technologies of Low-Carbon Steelmaking Northeastern UniversityShenyang 110819China

MoS_(2) is a typical electrocatalyst for hydrogen evolution reaction(HER),but the HER activity is spoilt by intensive adsorption towards H^(*),which requires further *** n-type MoS_(2),the construction of p-n heterojunction with p-type MoO_(3) can reverse this situation,because inner electronic field in p-n heterojunction can facilitate H^(*) *** on this hypothesis,p-n heterojunction is built between MoS_(2) and MoO_(3) with polyoxometalate compound as *** obtained MoO_(3)/MoS_(2) exhibits excellent HER activity,which only requires 68 mV to obtain 10 mA/cm^(2).With MoO_(3)/MoS_(2) as cathode material and Zn slice as anode,Zn-H^(+)battery is *** open circuit voltage achieves 1.11 V with short circuit current 151.4 mA/cm^(2).The peak power density of this Zn-H^(+) battery reaches 47.6 mW/cm^(2).When discharge at 10 mA/cm^(2),the specific capacity and energy density reach 728 mAh/g and 759 Wh/*** this process,H_(2) production rate of Zn-H^(+) battery achieves 364μmol/h with Faradic efficiency 97.8%.It realizes H_(2) production and electricity generation simultaneously.

关键词： Polyoxometalate p-n Heterojunction Electrocatalysis HER Zn-H~+battery

Fast Sentiment Analysis Algorithm Based on Double Model Fusion

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Computer Systems Science & Engineering 2021年第1期36卷 175-188页

作者： Zhixing Lin Like Wang xiaoli cui Yongxiang Gu Sanming University Network CenterSanming365004 College of Mathematics and Informatics Fujian Normal UniversityFuzhou350007China Chengdu Institute of Computer Applications Chinese Academy of SciencesChengdu610041China University of Chinese Academy of Sciences Beijing100049China Sichuan Rainbow Consulting&Software Co. Ltd.Chengdu610041China

Nowadays,as the number of textual data is exponentially increasing,sentiment analysis has become one of the most significant tasks in natural language processing(NLP)with increasing *** Chinese sentiment analysis algorithms cannot make full use of the order information in context and are inefficient in sentiment *** this paper,we systematically reviewed the classic and representative works in sentiment analysis and proposed a simple but efficient *** of all,FastText was trained to get the basic classification model,which can generate pre-trained word vectors as a ***,Bidirectional Long Short-Term Memory Network(Bi-LSTM)utilizes the generated word vectors for training and then merges with FastText to make comprehensive sentiment *** combining FastText and Bi-LSTM,we have developed a new fast sentiment analysis,called FAST-BiLSTM,which consistently achieves a balance between performance and *** particular,experimental results based on the real datasets demonstrate that our algorithm can effectively judge sentiments of users’comments,and is superior to the traditional algorithm in time efficiency,accuracy,recall and F1 criteria.

关键词： Sentiment analysis model fusion Bi-LSTM FastText

Hierarchical Control of Ride Height System for Electronically Controlled Air Suspension Based on Variable Structure and Fuzzy Control Theory

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Chinese Journal of Mechanical Engineering 2015年第5期28卷 945-953页

作者： XU Xing ZHOU Kongkang ZOU Nannan JIANG Hong cui xiaoli School of Automotive and Traffic Engineering Jiangsu University School of Mechanical Engineering Jiangsu University School of Mechanical Engineering Hunan Institute of Technology

The current research of air suspension mainly focuses on the characteristics and design of the air spring. In fact, electronically controlled air suspension （ECAS） has excellent performance in flexible height adjustment during different driving conditions. However, the nonlinearity of the ride height adjusting system and the uneven distribution of payload affect the control accuracy of ride height and the body attitude. Firstly, the three-point measurement system of three height sensors is used to establish the mathematical model of the ride height adjusting system. The decentralized control of ride height and the centralized control of body attitude are presented to design the ride height control system for ECAS. The exact feedback linearization method is adopted for the nonlinear mathematical model of the ride height system. Secondly, according to the hierarchical control theory, the variable structure control （VSC） technique is used to design a controller that is able to adjust the ride height for the quarter-vehicle anywhere, and each quarter-vehicle height control system is independent. Meanwhile, the three-point height signals obtained by three height sensors are tracked to calculate the body pitch and roll attitude over time, and then by calculating the deviation of pitch and roll and its rates, the height control correction is reassigned based on the fuzzy algorithm. Finally, to verify the effectiveness and performance of the proposed combined control strategy, a validating test of ride height control system with and without road disturbance is carried out. Testing results show that the height adjusting time of both lifting and lowering is over 5 s, and the pitch angle and the roll angle of body attitude are less than 0.15°. This research proposes a hierarchical control method that can guarantee the attitude stability, as well as satisfy the ride height tracking system.

关键词： electronically controlled air suspension (ECAS) ride height body attitude hierarchical control

In-situ formation of Al-CaB_6 composites with low resistivity

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Rare Metals 2012年第6期31卷 578-581页

作者： cui xiaoli Wu Yuying Zhu Xiangzhen Liu Xiangfa Shandong Univ Key Lab Liquid Solid Struct Evolut & Proc Mat Minist Educ Jinan 250061 Peoples R China

In this work, in-situ CaB6 reinforced aluminum matrix composites were fabricated, and the microstructure, resistivity, microhardness and coefficient of thermal expansion (CTE) of Al-CaB6 composites were studied. It is found that CaB6 compounds can be formed by reducing reaction occurred in the Al melt: . CaB6 exhibits a hexahedron morphology and distributes uniformly in the Al alloy matrix. The resistivity of Al-CaB6 composites is 3.02*10-8 Ω·m, which is close to that of pure Al and lower than that of 6063Al/Ga composites. The average microhardness of Al-CaB6 composites can reach 1270 MPa, 259.8% higher than that of pure Al. Compared to pure Al, the CTE of Al-CaB6 composites is much lower.

关键词： in-situ synthesis electron microscopy composite CaB6

Determination of Ca,K,Mg and Fe in Four Fish Species by FAAS

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Journal of Ocean University of China 2010年第3期9卷 235-238页

作者： cui xiaoli WANG Yijun SHE Xilin College of Chemistry and Environment Qingdao University Qingdao 266071 P. R. China

A method for determining calcium （Ca）, potassium （K）, magnesium （Mg） and iron （Fe） in four fish species was opti- mized and validated. It included microwave mineralization of the samples and subsequent quantification by flame atomic absorption spectroscopy （FAAS） with Zeeman-effect background correction. Using HNO3 （65%） and H202 （33%） as extraction solutions, the optimal conditions of extraction were established as follows： 0.5 g of sample mass; microwave time program of 300 W/5 min and 600 W/5 min. The method was free of matrix interferences. The linear correlation coefficients were ≥0.9991, the recovery percentage of analytes was from 99.31% to 103.70% and the RSD （relative standard deviation） was lower than 2.06%. The detection limits obtained were 32.3, 43.2, 14.0 and 68.6ng mL^-1 for Ca, K, Mg and Fe in FAAS respectively. It is shown that the method is rapid, simple, sensitive and accurate. The method was applied to the studies of digestibility and measurement of these nutrients in samples of fish collected from Norway, Japan and China.

关键词： flame atomic absorption spectrometry (FAAS) fish Calcium Magnesium Potassium Iron microwave digestion

Study on Relationship between Microstructure of Active Phase and HDS Performance of Sulfided Ni-Mo Catalysts: Effect of Metal Loading

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China Petroleum Processing & Petrochemical Technology 2014年第2期16卷 12-19页

作者： Guo Rong Shen Benxian Fang Xiangchen Sun Jin Peng Chong cui xiaoli State Key Laboratory of Chemical Engineering East China University of Science and Technology Fushun Research Institute of Petroleum and Petrochemicals SINOPEC

Six Ni-Mo catalysts with different metal contents were prepared and characterized by N2 adsorption and X-ray diffi＇actometry. The active phase microstructure of these catalysts was examined by the Raman spectroscopy, temperature- programmed reduction （TPR）, X-ray photoelectron spectroscopy, and high-resolution transmission electron microscopy. Hydrodesulfurization （HDS） activity of catalyst samples were analyzed in a flow fixed-bed microreactor. The sulfidation degree of Mo and the length of the MoS2 slab slightly increased with the amount of metal loaded following sulfidation. This small change is attributed to polymolybdate species observed in all the oxidized catalysts. Weak metal-support interactions, as determined by the TPR technique, increased the NiSx sulfidation phase and MoS2 slab stacking. The HDS activity of the catalyst samples increased with the number of active sites. For high metal loading catalysts, their HDS activity was nearly identical because the sulfur atoms cannot easily approach active sites. This change is caused by the large number of stacked layers in the MoS2 slabs as well as the decrease in the specific surface area and pore volume of the catalyst samples with an increasing metal loading.

关键词： Ni-Mo catalysts hydrodesulfurization sulfidation microstructure metal loading

The Design of Behavior Management Institution Based on Special Symbols and Measure Optimizing-Taking the Design of the Institution of Controlling the Pollution Behavior of Enterprises as an Example

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Journal of Systems Science and Information 2008年第3期6卷 257-274页

作者： Shaorong Sun xiaoli cui Business School University of Shanghai for Science and Technology Shanghai 200093 China

Taking the institution design of controlling the pollution behavior of enterprises as an example, the symbol system specialized for the design and analysis of behavior management institution is put forward, which predigests the institution design greatly and make the process of institution design much like the engineering design. The measure combination method for improving the parameters of the institution, the arithmetic for calculating the validity of the institution and the arithmetic for calculating the behavior probability of the irrational managed are also put forward, which make the design and analysis technology of behavior management institution more practical.

关键词： behavior management institution design measure combination

TNF-α suppresses sweat gland differentiation of MSCs by reducing FTO-mediated m^6 A-demethylation of Nanog mRNA

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Science China(Life Sciences) 2020年第1期63卷 80-91页

作者： Yihui Wang Rui Wang Bin Yao Tian Hu Zhao Li Yufan Liu xiaoli cui Liuhanghang Cheng Wei Song Sha Huang Xiaobing Fu Tianjin Medical University Tianjin 300070China Key Laboratory of Tissue Repair and Regeneration of PLA and Beijing Key Research Laboratory of Skin InjuryRepair and RegenerationFourth Medical Center of General Hospital of PLABeijing 100048China School of Medicine Nankai UniversityTianjin 300052China Wound Healing and Cell Biology Laboratory Institute of Basic Medical SciencesGeneral Hospital of PLABeijing 100853China

An effect of inhibition of tumor necrosis factor-α(TNF-α)on differentiation of mesenchymal stromal cells(MSCs)has been demonstrated,but the exact mechanisms that govern MSCs differentiation remain to be further ***,we show that TNF-αinhibits the differentiation of MSCs to sweat glands in a specific sweat gland-inducing environment,accompanied with reduced expression of Nanog,a core pluripotency *** elucidated that fat mass and obesity-associated protein(FTO)-mediated m^6 A demethylation is involved in the regulation of MSCs differentiation *** of MSCs to TNF-αreduced expression of FTO,which demethylated Nanog m *** expression of FTO increased Nanog m RNA methylation,decreased Nanog m RNA and protein expression,and significantly inhibited MSCs capacity for differentiation to sweat gland *** finding is the first to elucidate the functional importance of m^6 A modification in MSCs,providing new insights that the microenvironment can regulate the multipotency of MSCs at the post-transcriptional ***,to maintain differentiation capacity of MSCs by regulating m^6 A modification suggested a novel potential therapeutic target for stem cellmediated regenerative medicine.

关键词： MSCs sweat gland cells differentiation TNF-α Nanog m6A FTO

Redirecting differentiation of mammary progenitor cells by 3D bioprinted sweat gland microenvironment

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Burns & Trauma 2019年第1期7卷 269-278页

作者： Rui Wang Yihui Wang Bin Yao Tian Hu Zhao Li Yufan Liu xiaoli cui Liuhanghang Cheng Wei Song Sha Huang Xiaobing Fu Tianjin Medical University Tianjin 300070People’s Republic of China Key Laboratory of Tissue Repair and Regeneration of PLA and Beijing Key Research Laboratory of Skin InjuryRepair and RegenerationFourth Medical Center of General Hospital of PLABeijing 100048People’s Republic of China Wound Healing and Cell Biology Laboratory Institute of Basic Medical SciencesGeneral Hospital of PLABeijing 100853People’s Republic of China

Background:Mammary progenitor cells(MPCs)maintain their reproductive potency through life,and their specific microenvironments exert a deterministic control over these *** provides one kind of ideal tools for studying engineered microenvironmental influence because of its accessibility and continually undergoes postnatal developmental *** aim of our study is to explore the critical role of the engineered sweat gland(SG)microenvironment in reprogramming MPCs into functional SG ***:We have utilized a three-dimensional(3D)SG microenvironment composed of gelatin-alginate hydrogels and components from mouse SG extracellular matrix(SG-ECM)proteins to reroute the differentiation of MPCs to study the functions of this *** were encapsulated into the artificial SG microenvironment and were printed into a 3D cell-laden *** expression of specific markers at the protein and gene levels was detected after cultured 14 ***:Compared with the control group,immunofluorescence and gene expression assay demonstrated that MPCs encapsulated in the bioprinted 3D-SG microenvironment could significantly express the functional marker of mouse SG,sodium/potassium channel protein ATP1a1,and tend to express the specific marker of luminal epithelial cells,*** the Shh pathway is inhibited,the expression of SG-associated proteins in MPCs under the same induction environment is significantly ***:Our evidence proved the ability of differentiated mouse MPCs to regenerate SG cells by engineered SG microenvironment in vitro and Shh pathway was found to be correlated with the changes in the *** results provide insights into regeneration of damaged SG by MPCs and the role of the engineered microenvironment in reprogramming cell fate.

关键词： 3D bioprinting Artificial microenvironment Differentiation Mammary progenitor cells Sweat gland Extracellular matrix MPC ECM