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Adhesive Coacervates: Adhesive Coacervates Driven by Hydrogen-Bonding Interaction (Small 43/2020)

Small 2020年第43期16卷

作者： Qiongyao peng Jingsi Chen Zicheng Zeng Tao Wang Li Xiang xuwen peng Jifang Liu Hongbo Zeng Department of Chemical and Materials Engineering University of Alberta Edmonton Alberta T6G 1H9 Canada The Fifth Affiliated Hospital Guangzhou Medical University Guangzhou Guangdong 510700 China

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掘进机循环负压降尘装置参数优化研究

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矿业科学学报 2025年第2期10卷 271-284页

作者：邢旭文何少杰田园肖鹏武琨琪张英华张金宝滕胜杰庆阳新庄煤业有限公司新庄煤矿甘肃庆阳745000 北京科技大学资源与安全工程学院北京100083

有效开展掘进巷道工作面粉尘治理是确保井下作业安全的重要前提之一。针对高浓度粉尘环境中传统的喷雾降尘方式效率相对低下的问题,根据负压卷吸与喷雾降尘协同增效的理念研发一种应用于掘进机上的循环负压降尘装置。通过建立仿真模型... 详细信息

有效开展掘进巷道工作面粉尘治理是确保井下作业安全的重要前提之一。针对高浓度粉尘环境中传统的喷雾降尘方式效率相对低下的问题,根据负压卷吸与喷雾降尘协同增效的理念研发一种应用于掘进机上的循环负压降尘装置。通过建立仿真模型对射流卷吸机制的影响因素开展数值模拟,基于装置内外循环负压流场变化规律优化引射管形状、叶轮设置、文丘里管数量等参数,并采用相似实验的方式验证优化后装置的降尘效率。结果表明:在假设喷雾条件不变的情况下,当装置的引射管形状采用圆锥形、叶轮片数量为8片、叶轮转速为2400 r/min、文丘里管数量为10个、叶轮安装位置距引射管入口300 mm时,循环负压性能最为理想,其相似模型的降尘效率可达87.4%。

关键词：粉尘防治循环负压射流卷吸机制参数优化

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Synthesis of Cd_xZn_1-xS@MIL-101(Cr) Composite Catalysts for the Photodegradation of Methylene Blue

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NANO 2018年第10期13卷

作者： Yang, Shipeng peng, Siwei Zhang, Chunhui He, xuwen Cai, Yaqi China Univ Min & Technol Sch Chem & Environm Engn Beijing 11 Xueyuan Rd Beijing 100083 Peoples R China Chinese Acad Sci Res Ctr Ecoenvironm Sci 18 Shuangqing Rd Beijing 100085 Peoples R China Univ Chinese Acad Sci 19 A Yuquan Rd Beijing 100049 Peoples R China

Nanoparticles of the semiconductor catalyst CdxZn1-xS were embedded into the metal organic framework MIL-101(Cr) to obtain CdxZn1-xS@MIL-101 (Cr) nanocomposites. These materials not only possess high surface areas and mesopores but also show good utilization of light energy. The ultraviolet-visible diffuse reflectance patterns of CdxZn1-xS@MIL-101 (Cr) nanocomposites showed that Cd0.8Zn0.2S@MIL-101(Cr) possessed good visible light response ability among the synthesized nanocomposites. The photocatalytic performance of the CdxZn1-xS@MIL-101 (Cr) nanocomposites were tested via degradation and mineralization of methylene blue in neutral water solution under light irradiation using a 300W xenon lamp. As a result, using Cd0.8Zn0.2S@MIL-101(Cr) as a catalyst, 99.2% of methylene blue was mineralized within 30 min. Due to the synergistic effect of adsorption by the MIL-101(Cr) component and photocatalytic degradation provided by the Cd0.8Zn0.2S component, the Cd0.8Zn0.2S@MIL-101(Cr) catalyst displayed superior photocatalytic performance relative to Cd0.8Zn0.2S@MIL-101(Cr). Furthermore, Cd0.8Zn0.2S@MIL-101(Cr) possessed excellent stability during photodegradation and exhibited good reusability. The remarkable photocatalytic performance of Cd0.8Zn0.2S@MIL-101(Cr) is likely due to the effective transfer of electrons and holes at the heterojunction interfaces.

关键词： CdxZn1-xS@MIL-101(Cr) photodegradation methylene blue

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Platelet microparticles-derived miR-25-3p promotes the hepatocyte proliferation and cell autophagy via reducing B-cell translocation gene 2

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JOURNAL OF CELLULAR BIOCHEMISTRY 2020年第12期121卷 4959-4973页

作者： Xu, Yuyuan Li, Wenfei Liang, Guangyu peng, Jie Xu, xuwen Southern Med Univ Nanfang Hosp Dept Infect Dis 1838 North Guangzhou Ave Guangzhou 510515 Guandong Peoples R China

Platelets are critical regulators of liver regeneration, but the mechanisms are still not fully understood. Platelets have been shown to contain a wide variety of microRNAs (miRNAs) and play an important role in many diseases. However, the mechanism that how the platelet microparticles (PMPs)-derived miRNA regulate the hepatocyte proliferation is not very clear. In this study, we have successfully isolated and identified PMPs. We also found that PMPs, which could be well integrated into the HHL-5 cells, could upregulate the level of miR-25-3p in HHL-5 cells. Meanwhile, we found that PMPs-derived miR-25-3p promoted HHL-5 cells proliferation by accelerating cells into the S phase, and enhanced the autophagy by increasing the LC3II expression and reducing the P62 expression. Then, we proved that the miR-25-3p could target the B-cell translocation gene 2 (BTG2) and downregulate the expression levels of the BTG2 gene in HHL-5 cells. In addition, the overexpression of BTG2 significantly inhibited the proliferation and autophagy abilities of HHL-5 cells, while cotransfected miR-25-3p mimics or PMPs could partially rescue HHL-5 cells proliferation and autophagy. Furthermore, we proved that PMPs accelerated hepatocyte proliferation by regulating autophagy pathways. Therefore, PMPs-derived miR-25-3p promoted HHL-5 cell proliferation and autophagy by targeting BTG2, which may be a new therapeutic method for liver regeneration.

关键词： autophagy B-cell translocation gene 2 liver regeneration miR-25-3p platelet microparticles proliferation

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A particle swarm inspired multi-elitist artificial bee colony algorithm for real-parameter optimization

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COMPUTATIONAL OPTIMIZATION AND APPLICATIONS 2014年第2期57卷 493-516页

作者： Xiang, Yi peng, Yuming Zhong, Yubin Chen, Zhenyu Lu, xuwen Zhong, Xuejun Guangdong Baiyun Univ Dept Basic Courses Guangzhou 510450 Guangdong Peoples R China Guangzhou Univ Sch Math & Informat Sci Guangzhou 510006 Guangdong Peoples R China

The Artificial Bee Colony (ABC) algorithm is one of the most recent swarm intelligence based algorithms which simulates the foraging behavior of honey bee colonies. In this work, a particle swarm inspired multi-elitist ABC algorithm named PS-MEABC is proposed and applied for real-parameter optimization. In this modified version, the global best solution and an elitist randomly selected from the elitist archive are used to modify parameters of each food source in either onlooker bees or employed bees phases. PS-MEABC is compared with 5 state-of-the-art swarm based algorithms on CEC05 and BBOB12 benchmark functions in terms of four metrics: the mean error, the best error, the success rate (SR) and the expected running time (ERT). Wilcoxon signed ranks test results on the mean and the best error show that the performance of PS-MEABC is significantly better than or at least similar to these algorithms, and PS-MEABC has wider application range in terms of the success rate and faster convergence speed in terms of the expected running time. Our algorithm is comparable to its competitors with a fewer control parameters to be tuned.

关键词： Artificial bee colony algorithm Multi-elitist preservation strategy PSO algorithm Wilcoxon signed ranks test

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Patients with tuberculous meningitis and hepatitis B co-infection have increased risk for antituberculosis drug-induced liver injury and poor outcomes

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INFECTIOUS DISEASES 2020年第11期52卷 793-800页

作者： Mo, Xichao Xu, xuwen Ren, Zuning Guan, Junjie peng, Jie Southern Med Univ Nanfang Hosp Dept Infect Dis 1838 Guangzhoudadaobei Rd Guangzhou 510515 Peoples R China

Background:Tuberculous meningitis (TBM) is one of the most severe forms of tuberculosis. Previous studies reported that hepatitis B virus (HBV) infection could increase the risk of antituberculosis drug-induced liver injury (ATB-DILI) in pulmonary tuberculosis patients. To date, only a few studies exist on the effect of HBV on TBM. Methods:This inpatient study retrospectively analyzed the medical records of patients who were diagnosed with TBM between June 2002 and June 2018. Statistical analysis was used to reveal the difference between the HBV and non-HBV groups. Univariate analysis and multivariate regression analysis were performed on data to determine the prognostic factors of TBM. Results:A total of 386 patients were enrolled in our study, 57 of whom were included in the HBV group and 329 in the non-HBV group. The HBV group showed a higher frequency of ATB-DILI (HBV group: 14.0% versus non-HBV group: 3.3%,p < .001) and a higher risk of poor outcomes (i.e. death during inpatient period or neurological deficit at discharge, HBV group: 31.6% versus non-HBV group: 19.8%,p = .045) than the non-HBV group. The multivariate regression analysis identified ATB-DILI, scores of 3-8 on the Glasgow Coma Scale and hydrocephalus as independent predictors of poor outcomes in TBM patients. Conclusions:Our study demonstrated that HBV co-infection could increase the incidence of ATB-DILI and the risk of poor outcomes as identified by three predictors in TBM patients.

关键词： Tuberculous meningitis hepatitis B virus antituberculosis drug-induced liver injury predictors

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Two New Baccharane Glycosides from Seeds of Impatientis balsamina L. with in vitro Growth Inhibitory Activity in Human Cancer A375 Cells

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Chemical Research in Chinese Universities 2017年第5期33卷 753-757页

作者： WU Oian JIN Yongri YAO Hua LIU Ying LI peng LI xuwen College of Chemistry Jilin University Changchun 130021 P R. China Scientific Research Center China-Japan Union Hospital of Jilin University Changchun 130021 P. R. China

Two new baccharane-type glycosides（1 and 2）, together with seven known baccharane-type glycosides （3u9） hosenkoside A, hosenkoside B, hosenkoside C, hosenkoside F, hosenkoside M, hosenkoside K and hosenko- side G were isolated from the dried seeds of Impatientis balsamina L. The new baccharane-type glycosides were identified as honsenkol A-3-O-β-D-glucopyranosyl-26-O-p-D-glucopyranosyl-28-O-β-D-glucopyranosyl-O-β-D- glucopyranosyl（1） and （3S,4R,17R,20S）17-hydrroxy-3-O-β-D-xylopyranose（12）-β-D-glucopyranosyl-26-O-β-D- glucopyranosyl-28-O-β-D-glucopyranosyl-21,24-epoxybaccharane（2）, respectively, by spectroscopic methods, in- cluding NMR（1D and 2D）, IR and HR-ESI-MS. Compounds 1 and 2 were evaluated for in vitro inhibitory activity against the cell lines. Compound 2 with a new baccharane skeleton had anti-hepatic fibrosis activity against A375 cells in bioassay results, which means the new compounds have potential value in antitumor applications.

关键词： Impatientis balsamina L. Seed Baccharane-type glycoside Cytotoxic activity

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Seabed erosion and deposition formulas applied to a 2D hydrodynamic harbor engineering simulation

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ARABIAN JOURNAL OF GEOSCIENCES 2022年第6期15卷 1-19页

作者： Li, Yuting Fang, xuwen Li, Ruijie Song, Zhiyao peng, Guoqiang Chen, peng Nanjing Normal Univ Key Lab Virtual Geog Environm Minist Educ PRC Nanjing 210023 Peoples R China Nanjing Normal Univ State Key Lab Cultivat Base Geog Environm Evolut Nanjing 210023 Peoples R China Nanjing Normal Univ Jiangsu Ctr Collaborat Innovat Geog Informat Reso Nanjing 210023 Peoples R China Xiamen Univ Coll Ocean & Earth Sci Xiamen 361102 Peoples R China Hohai Univ Key Lab Coastal Disaster & Def Minist Educ Nanjing 210098 Peoples R China Hohai Univ Coll Oceanog Nanjing 210098 Peoples R China Hohai Univ Coll Harbour Coastal & Offshore Engn Nanjing 210098 Peoples R China Shaanxi Normal Univ Sch Geog & Tourism Xian 710062 Peoples R China

In coastal engineering, predicting seabed erosion and deposition can help understand hydrodynamic changes of the coastal area. The present work aims to address the prevalent challenge that there is often a shortage of measured data in coastal areas. In this paper, a new seabed erosion and deposition formula with four forms is proposed and combined with 2D hydrodynamic harbor engineering simulation of Daishan Island situated in Zhejiang province, China. The simulation shows that (1) in the open channel, the proposed new formula considers the friction coefficient before and after trenching, thus providing a more accurate prediction result;(2) in the sheltered channels, the proposed new formula can roughly estimate the deposition intensity;(3) in the basin entrance, the proposed new formula provides an estimation better aligned with reality than existing formulae. Meanwhile, the recovery saturation coefficient is not a constant;it can be set at 0.31 in the obtained formulas for calculations during the back silting, and at 0.11 during scouring. Therefore, the proposed new formula provides an improved solution to prediction of seabed erosion and deposition and is applicable to Daishan coastal area in different situations.

关键词： Tidal current and sediment Channel deposition Seabed erosion and deposition Erosion and deposition formula

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Investigation of fluoride and turbidity removal from coal mine water by combined micro-flocculation and membrane filtration: Lab to pilot scale

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Journal of Environmental Sciences 2025年

作者： Liping Zhang Weiwei Wang Yiyun An Huaran Sun Eryong Wu xuwen He Siwei peng Cun Zhang School of Chemical and Environmental Engineering China University of Mining and Technology-Beijing Beijing 100083 China Datang Environmental Industry Group Co. Ltd Beijing 100097 China School of Mines Key Laboratory of Deep Coal Resource Ministry of Education of China China University of Mining & Technology Xuzhou Jiangsu 221116 China

The concentration of turbidity and fluoride in mine drainage exceeding the discharge standard, which impede coal mine water broader application. In this study, micro-flocculation, which was based on the fluoride removal agent (CFYJ-L) developed by our research group, was combined with direct filtration membrane (MFDMF) to remove the high concentrations of turbidity and fluoride. Firstly, we investigated the impacts of factors on fluoride, turbidity removal by the CFYJ-L, explored the mechanisms of fluoride removal and screened cleaning agents for membrane fouling. Findings indicate that the optimal process parameters were a dosage of 1.16 g/L, pH 6.11, stirring time 10.90 min, which would let F − concentration from 20 to 0.453 mg/L. Suspended solids (SS), Cl − , SO 4 2− and CO 3 2- all seems not reduced fluoride removal efficiency. The fluoride removal mechanism is primarily through electrostatic adsorption, ion exchange, complexation and hydrogen bonding, resulting in the formation of precipitates that remove fluoride. Meanwhile, the optimal process parameters for treating simulated fluorinated coal mine water with MFDMF process was an operating pressure of 0.2 MPa. Membrane fouling was mainly characterized by cake filtration, accompanied by pore clogging. The best cleaning agent for membrane fouling was 0.2 % HCl, which can increase the membrane flux recovery rate from 70 % to 91 %. A 90-day pilot site continuous operation demonstrated the stability of the MFDMF process, with a treatment cost was reduced from over 3.36 RMB/m 3 to 2.60 RMB/m 3 and land area reduction exceeding 40 % compared to existing process.

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Highly efficient synthesis of hydrogen-bonded aromatic tetramers as macrocyclic receptors for selective recognition of lithium ions

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ORGANIC CHEMISTRY FRONTIERS 2019年第15期6卷 2654-2661页

作者： Guo, xuwen Yang, Yizhou peng, Zhiyong Cai, Yimin Feng, Wen Yuan, Lihua Sichuan Univ Coll Chem Key Lab Radiat Phys & Technol Minist Educ Chengdu 610064 Sichuan Peoples R China

Persistently folded aromatic amide macrocycles comprising four monomeric units (biphenyl-cyclo[4]aramide) were synthesized with high efficiency via a one-step approach along with the larger cyclic oligomer, biphenyl-cyclo[8]aramide as a minor product. Such cyclic hydrogen-bonded aromatic tetramers feature four amide oxygens enclosing a cavity with small dimensions, enabling the selective complexation of alkali metal ions, particularly Li+, with high affinity. The cyclization efficiency and selectivity of smaller macrocycles was further improved using fragment coupling and Li+-based template approaches. In addition, the superior binding ability of biphenyl-cyclo[4]aramide towards Li+ over its acyclic analogues was observed, demonstrating a remarkable macrocyclic effect.

关键词： Amides

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