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25 January 2023, Volume 43 Issue 1

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Stability of set-valued integral differential equations with fractional-like Hukuhara derivatives

WANG Peiguang, BI Jiahui, BAO Junyan

2023, 43(1):  1-8.  DOI: 10.3969/j.issn.1000-1565.2023.01.001

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The stability of set-valued integral differential equations with fractional-like Hukuhara derivatives was investigated. The criteria of equistability, uniform stability, equiasymptotic stability and strictly stability of the solutions are obtained by using Lyapunov-like functions and the new comparison principle.

Averaging principle for stochastic function Liénard equations with random switching

XU Yan, LI Caiyue

2023, 43(1):  9-15.  DOI: 10.3969/j.issn.1000-1565.2023.01.002

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By using the idea of nearly decomposability and aggregation, functional Itô formula and the averaging principle, this article considers the averaging principle for the stochastic functional Liénard equations with random switching was considered. Because the Markov chain is in a large state space and involves functional diffusions, the original system was dealt with. Under suitable conditions, it shows that the original system converges to a limit process, which is more convenient for calculation and analysis. The properties of the original system are obtained by studying the limiting process.

On rational interpolation to |x| at the extended Chebyshev nodes

LI Jianjun, ZHANG Huiming

2023, 43(1):  16-20.  DOI: 10.3969/j.issn.1000-1565.2023.01.003

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In this paper, the rational interpolation of |x| at the extended Chebyshev nodes was studied. That the exact order of approximation is O(1/(nln n))was obtained. Through numerical calculation, it is found that the error of the same approximation order is related to the density of nodes and the concavity and convexity of the curve where the nodes are located.

Optimal collecting channel design considering collection and retail competitions

CHEN Weiyu, WEI Jie

2023, 43(1):  21-28.  DOI: 10.3969/j.issn.1000-1565.2023.01.004

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In order to design the optimal collecting channel of closed-loop supply chain under the interaction of collection and retail competitions, based on the closed-loop supply chain consisting of a manufacturer and two retailers and by considering different collecting modes, four decision models are established. This paper utilizes the optimization theory method to solve the optimal solutions of models, and gives numerical examples to compare and analyze the optimal solutions of models and studies the effects of the interaction of collection and retail competitions on the whole closed-loop supply chain’s collection performance, the channel members’ optimal decisions and maximum profits. The results show that under the interaction of collection and retail competitions, the pattern of manufacturer participating in collecting will make the whole closed-loop supply chain obtain higher collecting performance and profit.

Magnetoelectric coupling effect of 0-3 type P(VDF-TrFE)_xFOM_1-x nanocomposites

YUAN Qiuting, GUO Cong, WANG Shuyu, FU Yueju, DONG Guoyi

2023, 43(1):  29-34.  DOI: 10.3969/j.issn.1000-1565.2023.01.005

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The development of flexible electronic components is changing with each passing day. Due to the advantages of ductility, flexibility, and easy preparation, organic thin films have considerable application prospects in the field of smart wearable flexible devices. 0-3 type nanocomposite film composed of organic polymer P(VDF-TrFE)copolymer and organic magnetic material ferrocene-m-benzoylhydrazone(FOM)was prepared on flexible polyimide(PI)substrate by sol-gel method. Structural characterization shows that the FOM nanoparticles are uniformly distributed in the P(VDF-TrFE)matrix. The crystalization and microstructure of the nanocomposites relays on the molar ratio of P(VDF-TrFE)and FOM, and the ferroelectric and magnetoelectric responses are strongly affected by the concentration of FOM nanoparticles. A remarkable magnetoelectric coupling effect of about 15.1 mV/(cm·Oe)is obtained from the nanocomposite film.

Optical and electrical characteristics of a pin-to-plate dielectric barrier discharge

ZHANG Wenxin, WANG Weiwei, LIU Feng, FAN Zhihui, WANG Jingquan, ZHANG Jinan

2023, 43(1):  35-39.  DOI: 10.3969/j.issn.1000-1565.2023.01.006

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In this work, a pin-to-plate dielectric barrier discharge device was designed. Air and argon mixture is used as working gas at atmospheric pressure. The variation of optical and electrical characteristics under the two conditions of mixed gas flow and gas non-flow is studied. The vibrational temperature(T_v)of nitrogen molecules is calculated by Boltzmann method and the excited electron temperature(T_exc)is calculated by spectral line relative intensity ratio method. The experimental results show that the input power(P)and T_v increase with the increase of the applied valtage(U_a), while T_exc decreases with the increase of U_a. When U_a is certain, in the gas flow, P increases, T_exc decreases, and T_v remains unchanged. The inelastic collision between high-energy electrons and working gas is qualitatively explained. The results are of great significance to the intensive study of atmospheric pressure plasma dynamics.

Preparation and chromatographic properties of silica gel chromatographic stationary phase modified with N,N-dimethyloctadecan-1-amine

CHE Xuan, LIU Delu, QIAO Xiaoqiang

2023, 43(1):  40-47.  DOI: 10.3969/j.issn.1000-1565.2023.01.007

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With N,N-dimethyloctadecan-1-amine(DMOA)as functional monomer, the polar embedded SiO₂-DMOA chromatographic stationary phase was prepared through ring-opening reaction. The successful fabrication of the SiO₂-DMOA stationary phase was characterized by thermogravimetric analysis and Fourier infrared spectroscopy. The retention mechanism research shows that the packed SiO₂-DMOA column indicates reversed-phase/hydrophilic mixed-mode retention mechanisms and the column efficiency can reach 81,100 N/m. The SiO₂-DMOA column can achieve high-efficiency separation of anilines, alkylbenzenes, amides, benzene derivatives, phenols and polycyclic aromatic hydrocarbons. The SiO₂-DMOA column was further applied to the separation of phospholipid standards. It can realize the effective separation and analysis of both phospholipid classes and phospholipid species. The SiO₂-DMOA column was further applied to the separation and analysis of soybean lecithin and phospholipids in lung adenocarcinoma cells, which also show a good separation potential.- DOI:10.3969/j.issn.1000-1565.2023.01.007十八叔胺修饰硅胶色谱固定相制备及分离性能研究车轩¹,刘德禄²,乔晓强²(1. 河北省生态环境监测中心,河北 石家庄 050000;2. 河北大学 药学院,河北 保定 071002)摘 要:以十八叔胺(DMOA)为功能单体,通过叔胺基团与环氧功能化的二氧化硅进行开环反应,制备十八叔胺极性嵌合的SiO₂-DMOA色谱固定相.傅里叶变换红外光谱和热重分析证明SiO₂-DMOA色谱固定相已成功制备.保留机制研究显示:填充SiO₂-DMOA色谱柱具有反相/亲水混合模式保留机制,其柱效可达81 100 N/m,并可实现苯胺类、烷基苯类、酰胺类、苯衍生物、苯酚类和多环芳烃类物质的有效分离.进一步将其用于磷脂标准品的分离,可实现磷脂类别和磷脂种类的有效分离分析.将其应用于大豆卵磷脂和肺腺癌细胞中磷脂的分离分析,显示了良好的分离潜力.关键词:十八叔胺;色谱固定相;混合模式;磷脂中图分类号:O657.7 文献标志码:A 文章编号:1000-1565(2023)01-0040-08Preparation and chromatographic properties of silica gel chromatographic stationary phase modified with N,N-dimethyloctadecan-1-amineCHE Xuan¹, LIU Delu², QIAO Xiaoqiang²(1. Hebei Ecological Environmental Monitoring Center, Shijiazhuang 050000, China; 2. College of Pharmacy, Hebei University, Baoding 071002, China)Abstract: With N,N-dimethyloctadecan-1-amine(DMOA)as functional monomer, the polar embedded SiO₂-DMOA chromatographic stationary phase was prepared through ring-opening reaction. The successful fabrication of the SiO₂-DMOA stationary phase was characterized by thermogravimetric analysis and Fourier infrared spectroscopy. The retention mechanism research shows that the packed SiO₂-DMOA column indicates reversed-phase/hydrophilic mixed-mode retention mechanisms and the column efficiency can reach 81,100 N/m. The SiO₂-DMOA column can achieve high-efficiency separation of anilines, alkylbenzenes, amides, benzene derivatives, phenols and polycyclic aromatic hydrocarbons. The SiO₂-DMOA column was further applied to the separation of phospholipid standards. It can realize the effective separation and analysis of both phospholipid classes and phospholipid species. The SiO₂-DMOA column was further applied to the separation and analysis of soybean lecithin and phospholipids in lung adenocarcinoma cells, which also show a good separation potential.- 收稿日期:2022-02-20 基金项目:河北省百名优秀创新人才支持计划(SLRC2019016) 第一作者:车轩(1971—),男,山西柳林人,河北省生态环境监测中心高级工程师,主要从事环境质量监测研究. E-mail: cx3025018@163.com 通信作者:刘德禄(1997—),男,吉林梅河口人,河北大学硕士研究生,主要从事色谱分析研究.E-mail: 945068682@qq.com乔晓强(1982—),男,河北宁晋人,河北大学教授,博士,主要从事色谱分离分析新材料研究. E-mail: hbuqiao@163.com第1期车轩等:十八叔胺修饰硅胶色谱固定相制备及分离性能研究

Mechanism of Stellera chamaejasme L. in the treatment of reumatoid arthritis based on network pharmacology and animal experiment

Huyiligeqi,BAI Xiaohong, BAI Meirong, BAO Wenshuang, Huhezhula, Laxinamujila

2023, 43(1):  48-57.  DOI: 10.3969/j.issn.1000-1565.2023.01.008

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This work aims to predict and verify the potential mechanism of Stellera chamaejasme L. in the treatment of rheumatoid arthritis(RA)based on network pharmacology. The main chemical components of Stellera chamaejasme L. were obtained from TCMSP, PubMed and TCMID databases and literature mining. The therapeutic targets of Stellera chamaejasme L. were obtained by using Uniprot and- DOI:10.3969/j.issn.1000-1565.2023.01.008基于网络药理学及动物实验探讨瑞香狼毒治疗RA作用机制胡伊力格其^1,2,白小红¹,白梅荣^1,2,包文双¹,胡和珠拉^1,2,拉喜那木吉拉¹(1.内蒙古民族大学 蒙医药学院,内蒙古 通辽 028000;2.内蒙古民族大学 蒙医药研发工程教育部重点实验室,内蒙古 通辽 028000)摘 要:为探讨瑞香狼毒(Stellera chamaejasme L.)治疗类风湿性关节炎(rheumatoid arthritis,RA)的潜在机制,利用TCMSP、PubMed及TCMID数据库和文献挖掘获得瑞香狼毒主要化学成分,利用Swiss Target Prediction、Uniprot数据库获得瑞香狼毒治疗疾病靶点,运用OMIM、GeneCards及PharmGKB数据库获取RA主要作用靶点,通过对化学成分靶点与疾病基因进行交集整合,筛选瑞香狼毒治疗RA的潜在治疗靶点.使用Cytoscape 3.6.1 软件构建“药物-活性成分-靶点-疾病”相互作用网络图,将潜在治疗靶点用DAVID软件分析预测相关的生物学过程,并通过动物实验对主要生物学过程进行验证.采用ELISA检测瑞香狼毒对RA模型大鼠血清炎症因子的影响,该研究共筛选出瑞香狼毒60个活性成分,5 017个与RA潜在治疗靶点及380个交集靶点;动物实验结果表明,瑞香狼毒可以通过抑制炎症因子肿瘤坏死因子(TNF-α)、白介素-6(IL-6)、白介素-1β(IL-1β)表达以发挥抗RA作用.该研究揭示了网络药理学预测并指导实验设计的合理性,证实瑞香狼毒可以通过抑制炎症因子以发挥抗RA作用,为瑞香狼毒治疗RA的机制研究提供依据.关键词:网络药理学;瑞香狼毒;类风湿性关节炎;肿瘤坏死因子;白介素-6;白介素-1β中图分类号:R593.21 文献标志码:A 文章编号:1000-1565(2023)01-0048-10Mechanism of Stellera chamaejasme L. in the treatment of reumatoid arthritis based on network pharmacology and animal experiment Huyiligeqi^1,2,BAI Xiaohong¹, BAI Meirong^1,2, BAO Wenshuang¹, Huhezhula^1,2, Laxinamujila¹(1.School of Mongolian Medicine, Inner Mongolia Minzu University, Tongliao 028000,China;2.Key Laboratory of Mongolian Medicine Research and Development Engineering of the Ministry of Education, Inner Mongolia Minzu University, Tongliao 028000,China)Abstract: This work aims to predict and verify the potential mechanism of Stellera chamaejasme L. in the treatment of rheumatoid arthritis(RA)based on network pharmacology. The main chemical components of Stellera chamaejasme L. were obtained from TCMSP, PubMed and TCMID databases and literature mining. The therapeutic targets of Stellera chamaejasme L. were obtained by using Uniprot and- 收稿日期:2022-06-20 基金项目:内蒙古自治区自然科学基金资助项目(2018LH08063);内蒙古民族大学中药学(蒙药学)重点学科建设项目(ZYX005);内蒙古民族大学博士科研启动基金资助项目(2017B5408);内蒙古自治区高等学校蒙药安全评价“创新团队”项目(NMGIRT2216);内蒙古自治区自然科学基金资助项目(2020LH08013);蒙药标准化研究国际合作科技创新项目(MDKBZH2018033);蒙医药研发工程教育部重点实验室开发基金项目(MDK2021051);内蒙古自治区卫生健康科技计划项目(202202258) 第一作者:胡伊力格其(1978—),女,蒙古族,内蒙古通辽人,内蒙古民族大学副教授,博士,主要从事蒙药及复方质量标准和药学方面研究.E-mail:b13948550593@163.com第1期胡伊力格其等:基于网络药理学及动物实验探讨瑞香狼毒治疗RA作用机制Swiss Target Prediction databases. Main targets of RA were screened through GeneCards, OMIM and PharmGKB databases. The chemical component targets and disease targets were integrated to screen the potential therapeutic targets of Stellera chamaejasme L. for RA. Cytoscape 3.6.1 software was used to construct the “drug-component-target-disease” interaction network diagram. Meanwhile, potential therapeutic targets were analyzed by DAVID software to predict the relevant biological process. Finally, the main biological processes were verified by animal experiments. The effects of Stellera chamaejasme L. on serum inflammatory factors in RA model rats were detected by ELISA. A total of 60 active components of Stellera chamaejasme L., 5017 potential therapeutic targets and 380 common targets for RA were screened out. The results of animal experiments showed that Stellera chamaejasme L. attenuates RA by inhibiting the expression of inflammatory factors including tumor necrosis factor-α(TNF-α), interleukin-1β(IL-1β)and interleukin-6(IL-6). This study revealed the rationality of network pharmacology to predict and guide the experimental design and confirmed that Stellera chamaejasme L. exerted anti-RA effect by inhibiting inflammatory factors, and provided basis for the study of the mechanism of Stellera chamaejasme in treating RA.

Preparation and thermoelectric properties of the Lu_xBi_<sub>2-xTe₃ alloys with nanoflower morphology

WU Fang, WANG Wei

2023, 43(1):  58-66.  DOI: 10.3969/j.issn.1000-1565.2023.01.009

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The Bi₂Te₃ based materials have good thermoelectric properties around room temperatures. The themoelectric properties of the Bi₂Te₃ based alloys can be improved by nanotechnology and element doping. In this paper the LuxBi_2-xTe₃ nanopowders with nanoflowers morphology were synthesize by hydrothermal method, and the phase structure and micro-topography of the nanopowders were investigated by X-ray diffractometer(XRD)and a field-emission scanning electron microscopy(FESEM). The effects of the Lu doping and the ethylene diamine tetraacetic acid(EDTA)amounts on the morphology of the nanopowders were investigated. The results showed that the Lu doping is not beneficial to form nanoflowers morphology, and it is vital to select proper amounts of EDTA for forming nanoflowers morphology of the nanopowders. Subsequently, the LuxBi_2-xTe₃ bulk were synthesized by hot- DOI:10.3969/j.issn.1000-1565.2023.01.009具有花状形貌LuxBi_2-xTe₃合金的制备及性能吴芳¹,王伟² (1.河南财政金融学院 人工智能学院,河南 郑州 450046;2.郑州工程技术学院 信息工程学院,河南 郑州 450044)摘 要:Bi₂Te₃基材料在室温附近具有良好的热电性能,通过掺杂和纳米技术可以提高Bi₂Te₃基热电材料的热电性能,其主要由热电优值(ZT)决定.本文通过水热法成功制备了具有纳米花形貌的LuxBi_2-xTe₃粉体,并对制备的纳米粉体分别进行XRD和SEM表征,讨论了Lu元素掺杂和乙二胺四乙酸(EDTA)用量对LuxBi_2-xTe₃纳米花粉体形貌的影响,结果表明:Lu元素掺杂不利于纳米花形貌的形成,而EDTA用量的合适选取对于纳米花形貌的形成起着至关重要的作用.接着采用热压法将LuxBi_2-xTe₃纳米花粉体压制成致密块体,讨论了Lu元素掺杂对LuxBi_2-xTe₃块体热电性能的影响,结果表明:Lu掺杂和纳米花形貌有利于提高样品的功率因子同时保持较低的热导率,从而可以达到较高的ZT值;Lu_0.2Bi_1.8Te₃样品和Lu_0.25Bi_1.75Te₃样品的ZT值均高于区域熔炼商用Bi₂Te₃块体的值,并且Lu_0.25Bi_1.75Te₃样品的ZT值在测温范围内均高于1,其ZT值在473 K时达到了1.14,高于其他相关报道的n型块体的值.这一研究为提高Bi₂Te₃基合金热电材料的热电性能提供了一个新的途径.关键词:LuxBi_2-xTe₃粉体;Lu元素掺杂;EDTA用量;纳米花形貌;热电性能中图分类号:TG146.4 文献标志码:A 文章编号:1000-1565(2023)01-0058-09Preparation and thermoelectric properties of the Lu_xBi_<sub>2-xTe₃ alloys with nanoflower morphologyWU Fang¹, WANG Wei²(1.College of Artificial Intelligence, Henan Finance University, Zhengzhou 450046, China;2.College of Information Engineering, Zhengzhou University of Technology, Zhengzhou 450044, China)Abstract: The Bi₂Te₃ based materials have good thermoelectric properties around room temperatures. The themoelectric properties of the Bi₂Te₃ based alloys can be improved by nanotechnology and element doping. In this paper the LuxBi_2-xTe₃ nanopowders with nanoflowers morphology were synthesize by hydrothermal method, and the phase structure and micro-topography of the nanopowders were investigated by X-ray diffractometer(XRD)and a field-emission scanning electron microscopy(FESEM). The effects of the Lu doping and the ethylene diamine tetraacetic acid(EDTA)amounts on the morphology of the nanopowders were investigated. The results showed that the Lu doping is not beneficial to form nanoflowers morphology, and it is vital to select proper amounts of EDTA for forming nanoflowers morphology of the nanopowders. Subsequently, the LuxBi_2-xTe₃ bulk were synthesized by hot- 收稿日期:2022-05-23 基金项目:河南省重点科技攻关项目(212102210599) 第一作者:吴芳(1982—),女,河南焦作人,河南财政金融学院副教授,博士,主要从事薄膜材料、热电材料等方向研究.E-mail:fwu082@126.com第1期吴芳等:具有花状形貌LuxBi_2-xTe₃合金的制备及性能pressing method, and the effects of the Lu doping on the thermoelectric properties of the LuxBi_2-xTe₃ bulk were also investigated. The results showed that the Lu doping and the nanoflowers morphology are helpful to increase the power factor and are also helpful to keep lower thermal conductivity, leading to a high ZT value. The ZT values of the Lu_0.2Bi_1.8Te₃ and Lu_0.25Bi_1.75Te₃ sample are all higher than the commercial zone melting Bi₂Te₃ ingots. And the ZT values of the Lu_0.25Bi_1.75Te₃ sample are all higher than 1 in the whole testing temperature range, and the optimum value reached 1.14 at 473 K which is higher than that of other reported n type Bi₂Te₃. This study provides a new way to improve the thermoelectric properties of the Bi₂Te₃ based alloys.

Community structure of phytoplankton in summer of the Fuhe River,Baiyangdian Basin and their indication on water quality

ZHANG Zhongwei, CHEN Sibao, WANG Jiaxin, XIONG Fei, YU Jixin

2023, 43(1):  67-74.  DOI: 10.3969/j.issn.1000-1565.2023.01.010

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To explore the phytoplankton community structure and water quality of the Fuhe River, a upstream river of Baiyangdian Lake, quantitative investigations of phytoplankton were carried out in summer of 2020 at 5 sections in the Fuhe River, and water quality was evaluated according to the dominant- DOI:10.3969/j.issn.1000-1565.2023.01.010白洋淀流域府河夏季浮游植物的群落结构及其对水质的指示张仲伟¹,陈思宝¹,汪家鑫¹,熊飞²,喻记新²(1.长江勘测规划设计研究有限责任公司 水利部长江治理与保护重点实验室,湖北 武汉 430010;2.江汉大学 生命科学学院,湖北省汉江流域特色生物资源保护开发与利用工程技术研究中心,湖北 武汉 430056)摘 要:为探究白洋淀入淀河流府河的浮游植物群落结构和水质现状,于2020年夏季对府河5个采样断面的浮游植物进行了定量调查,并基于浮游植物的优势种、密度、生物量和群落多样性指数对府河夏季的水质进行了评价.结果显示:府河夏季共鉴定出浮游植物7门111种属,群落组成以绿藻门、硅藻门为主,其次是蓝藻门,优势种包括微囊藻(Microcystis sp.)、小环藻(Cyclotella sp.)、细小平裂藻(Merismopedia minima)、冠盘藻(Stephanodiscus sp.)和集星藻(Actinastrum hantzschii).各采样断面浮游植物密度和生物量的均值分别为13.51×10⁶ ind/L、5 748.8×10^-3 mg/L,各采样断面浮游植物的Shannon-Wiener多样性指数(H)、Margalef丰富度指数(D)和Pielou均匀度指数(J)的均值分别为2.36、3.25和0.59,显示夏季府河浮游植物的多样性较高.根据浮游植物的优势种、密度和生物量,夏季府河整体水质状况为中-富营养;根据H、D值,夏季府河整体水质状况为β-中污染;根据J值,夏季府河整体水质状况为轻度污染,综合评价结果显示夏季府河水质状况为轻-中度污染水平.关键词:浮游植物;群落结构;水质;生物学评价;府河;白洋淀中图分类号:X826 文献标志码:A 文章编号:1000-1565(2023)01-0067-08Community structure of phytoplankton in summer of the Fuhe River,Baiyangdian Basin and their indication on water qualityZHANG Zhongwei¹, CHEN Sibao¹, WANG Jiaxin¹, XIONG Fei², YU Jixin²(1.Key Laboratory of Changjiang Regulation and Protection of Ministry of Water Resources,Changjiang Survey Planning Design and Research Co. Ltd., Wuhan 430010, China; 2.Hubei Engineering Research Center for Protection and Utilization of Special Biological Resources in the Hanjiang River Basin, School of Life Sciences, Jianghan University,Wuhan 430056, China)Abstract: To explore the phytoplankton community structure and water quality of the Fuhe River, a upstream river of Baiyangdian Lake, quantitative investigations of phytoplankton were carried out in summer of 2020 at 5 sections in the Fuhe River, and water quality was evaluated according to the dominant- 收稿日期:2022-04-26 基金项目:国家重点研发计划项目(2020YFD0900502);长江勘测规划设计研究有限责任公司项目(CX2019Z54) 第一作者:张仲伟(1979—),男,河南信阳人,长江勘测规划设计研究有限责任公司高级工程师,主要从事水利水电工程环境影响评价、环保设计与研究.E-mail: zhangzhongwei@cjwsjy.com.cn 通信作者:喻记新(1990—),男,湖北黄冈人,江汉大学讲师,博士,主要从事水生态环境监测与保护研究.E-mail:jxyu001@126.com第1期张仲伟等:白洋淀流域府河夏季浮游植物的群落结构及其对水质的指示species, density, biomass and community diversity indexes of phytoplankton. A total of 111 species, belong to 7 phyla, were identified, and the community was mainly composed of Chlorophyta and Bacillariophyta, followed by Cyanophyta. The main dominant species were Microcystis sp., Cyclotella sp., Merismopedia minima, Stephanodiscus sp. and Actinastrum hantzschii. The average density and biomass of phytoplankton were 13.51×10⁶ ind/L and 5 748.8×10^-3 mg/L, respectively, and the average Shannon-Wiener diversity index(H), Margalef index richness(D)and Pielou evenness index(J)of phytoplankton community were 2.36, 3.25 and 0.59 respectively, indicating the high diversity of phytoplankton in the Fuhe River in summer. According to the evaluation methods of phytoplankton, the dominant species, density and biomass based water quality indicated the Fuhe River was mesotrophic-eutrophic in summer, the H and D based water quality indicated β-medium pollution, the J based water quality indicated mild pollution, and the overall phytoplankton based evaluation result indicated mild-medium pollution.

Advanced progress of constructed wetland technology for tail sewage treatment based on case analysis

ZHAO Chunxia, LI Tianyi, FU Yijun, WANG Hongjie

2023, 43(1):  75-82.  DOI: 10.3969/j.issn.1000-1565.2023.01.011

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The constructed wetland technology integrates the synergistic removal mechanism of pollutants in water by substrates, microorganisms and plants. It is widely used to improve the tail water quality of sewage plants as a green and low consumption ecological restoration technology. Some cases of tail water recycling for urban sewage plants are summarized based on constructed wetland technology through analyzing the operation modes and advantages and disadvantages of different constructed wetland processes. The design of composite constructed wetland process based on different water quality characteristics was proposed as a reference for the sewage recycling.

A new recorded genus and species of phrurolithids in Hebei University of China(Araneae: Phrurolithidae)

MU Yannan, ZHANG Feng

2023, 43(1):  83-86.  DOI: 10.3969/j.issn.1000-1565.2023.01.012

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The genus Labialithus Kamura, 2021, described originally from Russia(Far East), Korea and Japan, is reported for the first time from China. The type species of this genus, Labialithus labialis(Paik,1991)is found and described.

Genetic analysis and mapping of a heading date mutant jt1242-14b in Setaria italica

WANG Chunfang, QI Dongmei, SHI Shenkui, ZHANG Wendian, ZHI Hui, DIAO Xianmin

2023, 43(1):  87-94.  DOI: 10.3969/j.issn.1000-1565.2023.01.013

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To identify the target genes controlling heading date, an early heading mutant jt1242-14b was identified from the ethyl methyl sulfonate(EMS)induced mutant library of the foxtail millet variety Yugu1. Compared with Yugu1, jt1242-14b showed an early heading date, thinner stem, and narrow and short leaves. Genetic analysis showed that the mutant was controlled by a recessive gene. Genetic mapping of the mutant gene was conducted from segregating population of jt1242-14b/SSR41. The gene was mapped in an interval of 4 447 kb between the molecular marker In4746 and In9-11 on chromosome 9. Finally, jt1242-14b was caused by a mutation in PHYB gene revealed by sequencing, so PHYB could be the target gene of the early heading mutant. This study provided a material foundation for cloning and functional research of PHYB in millet early heading genes.

Spammer detection model based on hierarchical attention mechanism

YANG Xiaohui, WANG Weibin

2023, 43(1):  95-102.  DOI: 10.3969/j.issn.1000-1565.2023.01.014

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The current network-based spammer detection methods only consider simple social relations and lack the utilization of more complex social semantic relations, so it is difficult to achieve optimal performance. Aiming at this challenge, this paper proposes a spammer detection model based on hierarchical attention mechanism(HAM-SD). The model first uses a heterogeneous information network to model social media to mine rich semantic and structural information, then uses a node-level attention layer to aggregate meta-path neighbors to enhance node representation, and uses an adaptive hierarchical aggregation module to select features at different levels to improve representation Then, the node representations under different meta-paths are fused through the semantic-level attention layer, and finally brought into the classification detection module to realize the detection of spammer. The results on public datasets show that the model can effectively detect spammer and maintain strong stability when the data distribution is unbalanced.

Object detection and classification of polyps based on improved Faster R-CNN

YANG Kun, YUAN Jiacheng, GAO Cong, SUN Yufeng, LU Yufei,CHANG Shilong, XUE Linyan

2023, 43(1):  103-112.  DOI: 10.3969/j.issn.1000-1565.2023.01.015

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In order to solve the problem of difficult classification of adenomatous polyps and hyperplastic polyps under colorectoscopy, an object detection and polyp classification model based on improved Faster R-CNN was proposed. Polyp images(1582 adenomatous polyp images, 844 hyperplastic polyp images)were image-enhanced in two ways, and 602 images(386 adenomatous images, 216 hyperplastic- DOI:10.3969/j.issn.1000-1565.2023.01.015基于改进的Faster R-CNN的息肉目标检测和分类方法杨昆^1,2,3,原嘉成¹,高聪⁴,孙宇锋¹,路宇飞¹,常世龙¹,薛林雁^1,2,3(1.河北大学 质量技术监督学院,河北 保定 071002;2.计量仪器与系统国家地方联合工程研究中心,河北 保定 071002;3.河北省新能源汽车动力系统轻量化技术创新中心, 河北 保定 071002;4.河北远东通信系统工程有限公司,河北 石家庄 050200)摘 要:为了解决结肠镜下腺瘤性息肉和增生性息肉不易分型的问题,提出一种基于改进的Faster R-CNN的目标检测及息肉分类模型.在数据预处理阶段,对原有的2 426张息肉图像(1 582张腺瘤性息肉图像,844张增生性息肉图像)通过2种方式进行图像增强,并且通过改进的特征提取、边界框回归以及非极大值抑制的网络,用602张图像(386张腺瘤性图像,216张增生性息肉图像)进行测试.通过实验证明,在交并比(IoU)取0.5时,获得了86.8%的平均精度均值,相较于改进之前提升了2.3%.实验结果验证了该模型的潜在临床应用价值.关键词:息肉;目标检测;分类;Faster R-CNN中图分类号:TP192.7 文献标志码:A 文章编号:1000-1565(2023)01-0103-10Object detection and classification of polyps based onimproved Faster R-CNNYANG Kun^1,2,3, YUAN Jiacheng¹, GAO Cong⁴, SUN Yufeng¹, LU Yufei¹,CHANG Shilong¹, XUE Linyan^1,2,3(1.College of Quality and Technical Supervision, Hebei University, Baoding 071002, China; 2. National & Local Joint Engineering Research Center of Metrology Instrument and System, Baoding 071002, China; 3.New Energy Vehicle Power System Lightweight Technology Innovation Center of Hebei Province, Baoding 071002, China; 4.Hebei Far East Communication System Engineering Co., Ltd, Shijiazhuang 050200, China)Abstract: In order to solve the problem of difficult classification of adenomatous polyps and hyperplastic polyps under colorectoscopy, an object detection and polyp classification model based on improved Faster R-CNN was proposed. Polyp images(1582 adenomatous polyp images, 844 hyperplastic polyp images)were image-enhanced in two ways, and 602 images(386 adenomatous images, 216 hyperplastic- 收稿日期:2022-02-12 基金项目:河北省自然科学基金资助项目(A2011201155);河北大学校长科研基金资助项目(XZJJ201914);河北大学多学科交叉研究项目(DXK201914) 第一作者:杨昆(1976—),男,河北保定人,河北大学教授,博士生导师,博士,主要从事生物医学图像处理方向研究.E-mail:yangkun@hbu.edu.cn 通信作者:薛林雁(1981—),女,河北广平人,河北大学副教授,博士,主要从事生物医学图像处理方向研究.E-mail:lyxue@hbu.edu.cn第1期杨昆等:基于改进的Faster R-CNN的息肉目标检测和分类方法polyp images)were tested. It is proved by experiments that when the intersection-union ratio(IoU)is set to be 0.5, an average precision of 86.8% is obtained, which is 2.3% higher than that before the improvement. The experimental results verified the potential clinical application value of this model.