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儿茶素功能化Fe_(3)O_(4)磁性纳米粒子的合成及其对重金属离子去除的研究

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化工新型材料 2021年第6期49卷 271-275页

作者：史宇哲孙聪聪李静超邓世贤赵柏涵刘志国东北林业大学化学化工与资源利用学院哈尔滨150040 东北林业大学森林植物生态学教育部重点实验室哈尔滨150040

采用水热法合成了水溶性儿茶素功能化的Fe_(3)O_(4)纳米粒子。通过傅立叶变换红外光谱、X射线光电子能谱、原子力显微镜、X射线衍射和磁性测试对制备的Fe_(3)O_(4)纳米复合材料进行了表征。结果表明,Fe_(3)O_(4)纳米粒子具有立方尖晶石... 详细信息

采用水热法合成了水溶性儿茶素功能化的Fe_(3)O_(4)纳米粒子。通过傅立叶变换红外光谱、X射线光电子能谱、原子力显微镜、X射线衍射和磁性测试对制备的Fe_(3)O_(4)纳米复合材料进行了表征。结果表明,Fe_(3)O_(4)纳米粒子具有立方尖晶石结构,表面覆盖着儿茶素。儿茶素功能化Fe_(3)O_(4)纳米粒子具有很强的磁性,可以利用永磁体进行收集。所得的Fe_(3)O_(4)纳米粒子具有良好的稳定性,并可以在水中重新分散。在此基础上,实验了儿茶素功能化Fe_(3)O_(4)纳米颗粒吸附水中的重金属离子效果。原子吸收测定结果表明,儿茶素功能化Fe_(3)O_(4)纳米粒子对水中Cu^(2+)、Cd^(2+)和Pb^(2+)的去除率很高,有望应用于废水中重金属离子的处理。

关键词：儿茶素四氧化三铁纳米粒子重金属离子

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基于跨平台联合仿真技术的接口算法研究

电测与仪表 2019年第2期56卷 70-74页

作者：刘水王鸿王海群王致杰孙丛丛朱谷雨付晓琳上海电机学院电气学院上海200240 斯特拉斯克莱德大学电子与电气工程系

系统解耦算法是联合仿真平台成立的前提条件,在研究传统输电线路解耦算法的基础上,提出了针对基于RT-lab和Hypersim的风电场并入大规模交直流电网跨平台联合仿真技术的改进输电线路接口算法,并利用Matlab验证了改进后算法的优越性,以较... 详细信息

系统解耦算法是联合仿真平台成立的前提条件,在研究传统输电线路解耦算法的基础上,提出了针对基于RT-lab和Hypersim的风电场并入大规模交直流电网跨平台联合仿真技术的改进输电线路接口算法,并利用Matlab验证了改进后算法的优越性,以较高的增幅提高系统精确性、稳定性。该平台结合各软件优势,分别在RT-LAB中建立风电场模型和Hypersim中建立交直流网络,更准确的实现大规模新能源接入电网的联合仿真。

关键词： RT-lab和Hypersim联合仿真传输线解耦算法

The impacts of ambiguity in preparation of 80% sulfuric acid solution and shaking time control of calibration solution on the determination of transparent exopolymer particles

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Acta Oceanologica Sinica 2023年第4期42卷 50-58页

作者： congcong Guo Guicheng Zhang Shan Jian Wei Ma Jun sun Institute of Marine Science and Technology Shandong UniversityQingdao 266237China Institute for Advanced Marine Research China University of GeosciencesGuangzhou 511462China Research Centre for Indian Ocean Ecosystem Tianjin University of Science and TechnologyTianjin 300457China Huaihe River Basin Eco-environment Monitoring and Scientific Research Center Huaihe River Basin Eco-environment Supervision and Administration BureauBengbu 233001China

The quantification of transparent exopolymer particles(TEP) by colorimetric method is of large error and low repeatability,one major reason of which is related to the absence of clear definition and evaluation for part steps of the original *** is obscure that the 80% sulfuric acid solution,acted as the extraction solution in the determination of TEP,is prepared based on a volume ratio or mass ***,the change of solubility of recently available Gum Xanthan(GX) from the market means that the original protocol is no longer applicable,and the grinding of GX stock solution with a tissue grinder is replaced by shaking with a rotating shaker in the study to prevent the excessive dissolution of *** found that different preparation techniques could result in the varied concentrations of 80% H_(2)SO_(4).The duration of shaking during the preparation of standard solution significantly affected the slope of the calibration curve,which caused different correction results of *** impacts of different extraction solution concentrations and shaking time of GX solution on the quantification of TEP were investigated based on the field sampling and laboratory *** extraction capacities of H_(2)SO_(4) with different concentrations for Alcian Blue were distinct,but had limited effect on the final measuring result of *** change of the standard curve slope came along with the variation of shaking time,which markedly altered the detection limit and calibration result,and the extended shaking time was in favor of the determination of low-concentration *** was suggested that the extraction solution concentration,shaking time and filtration volume of standard solution are required to be well controlled and selected to obtain more accurate results for TEP with different concentrations.

关键词： transparent exopolymer particles determination method method improvement sulfuric acid shaking time

婴幼儿配方乳粉中泛酸检测国家标准微生物法与试剂盒法比对探究

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现代食品 2022年第6期28卷 170-173,186页

作者：孙丛丛李鹏李玉平张天博河北三元食品有限公司河北石家庄050700

本文采用《食品安全国家标准食品中泛酸的测定》(GB 5009.210—2016)的第一法——微生物法和试剂盒法对5种婴幼儿配方乳粉和泛酸质控样品中的泛酸含量进行检测。结果表明:微生物法标准曲线相关系数为0.992 8,精密度为1.16%~2.43%,试剂... 详细信息

本文采用《食品安全国家标准食品中泛酸的测定》(GB 5009.210—2016)的第一法——微生物法和试剂盒法对5种婴幼儿配方乳粉和泛酸质控样品中的泛酸含量进行检测。结果表明:微生物法标准曲线相关系数为0.992 8,精密度为1.16%~2.43%,试剂盒法标准曲线相关系数为0.994 3,精密度为1.14%~2.29%。经t检验,两种检测方法对婴幼儿乳粉泛酸检测无明显差异。与国家标准微生物法相比,试剂盒法方便、快捷,检测周期短,更适于企业实验室大量实验样本的检测。

关键词：泛酸婴幼儿配方乳粉国家标准微生物法试剂盒法比对

Graphene Nanostructure-Based Tactile Sensors for Electronic Skin Applications

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Nano-Micro Letters 2019年第4期11卷 239-275页

作者： Pei Miao Jian Wang congcong Zhang Mingyuan sun Shanshan Cheng Hong Liu Institute for Advanced Interdisciplinary Research Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of ShandongUniversity of Jinan336 Nanxinzhuang West RoadJinan 250011People’s Republic of China Department of Chemistry School of Chemistry and Chemical EngineeringUniversity of Jinan336 Nanxinzhuang West RoadJinan 250011People’s Republic of China Department of Chemistry Tianjin Key Laboratory of Molecular Optoelectronic SciencesSchool of ScienceTianjin University92 Weijin RoadTianjin 300072People’s Republic of China Center of Bio and Micro/Nano Functional Materials State Key Laboratory of Crystal MaterialsShandong University27 Shanda South RoadJinan 250100People’s Republic of China

Skin is the largest organ of the human body and can perceive and respond to complex environmental ***,the development of electronic skin(E-skin)for the mimicry of the human sensory system has drawn great attention due to its potential applications in wearable human health monitoring and care systems,advanced robotics,artificial intelligence,and human-machine *** sense is one of the most important senses of human skin that has attracted special *** ability to obtain unique functions using diverse assembly processible methods has rapidly advanced the use of graphene,the most celebrated two-dimensional material,in electronic tactile sensing *** a special emphasis on the works achieved since 2016,this review begins with the assembly and modification of graphene materials and then critically and comprehensively summarizes the most advanced material assembly methods,device construction technologies and signal characterization approaches in pressure and strain detection based on graphene and its derivative *** review emphasizes on:(1)the underlying working principles of these types of sensors and the unique roles and advantages of graphene materials;(2)state-of-the-art protocols recently developed for high-performance tactile sensing,including representative examples;and(3)perspectives and current challenges for graphene-based tactile sensors in E-skin applications.A summary of these cutting-edge developments intends to provide readers with a deep understanding of the future design of high-quality tactile sensing devices and paves a path for their future commercial applications in the field of E-skin.

关键词： Graphene derivatives Tactile sensor Electronic skin Assembly

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医学教育中标准化病人队伍建设困境及对策

中国继续医学教育 2020年第16期12卷 86-88页

作者：孙晓彤张晓敏周荣佼周超孙聪聪安强滨州医学院附属医院医学教育中心山东滨州256600 滨州医学院附属医院肾内科山东滨州256600 滨州市星火公益事业发展中心山东滨州256600

随着标准化病人在中国医学教育中应用与推广,越来越多的医学院校及医院认识到标准化病人在医学教育中的优势和价值,但是目前标准化病人的招募、培训、管理和质量评价尚未在国内形成标准化建设规范。目前我国的标准化病人以兼职为主,标... 详细信息

随着标准化病人在中国医学教育中应用与推广,越来越多的医学院校及医院认识到标准化病人在医学教育中的优势和价值,但是目前标准化病人的招募、培训、管理和质量评价尚未在国内形成标准化建设规范。目前我国的标准化病人以兼职为主,标准化病人队伍建设中往往面临人员数量与构成、管理体制与成本及教育教学质量等诸多方面的问题。文章通过分析目前我国标准化病人队伍建设的困境,并结合近年来滨州医学院附属医院标准化病人队伍建设经验,为广大医学院校和医院标准化病人队伍建设提出对策,旨在提升医学教育中标准化病人队伍水平和稳定性。

关键词：医学教育标准化病人培训考核困境对策

Phytoplankton growth and microzooplankton grazing in the central and northern South China Sea in the spring intermonsoon season of 2017

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Acta Oceanologica Sinica 2020年第6期39卷 84-95页

作者： Dawei Chen congcong Guo Linhui Yu Yuanzhen Lu Jun sun Tianjin Key Laboratory of Marine Resources and Chemistry Tianjin University of Science and TechnologyTianjin 300457China Research Centre for Indian Ocean Ecosystem Tianjin University of Science and TechnologyTianjin 300457China State Key Laboratory of Tropical Oceanography South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301China

Phytoplankton growth rates and mortality rates were experimentally examined at 21 stations during the 2017 spring intermonsoon(April to early May)in the northern and central South China Sea(SCS)using the dilution technique,with emphasis on a comparison between the northern and central SCS areas which had different environmental *** had been higher temperature but lower nutrients and chlorophyll a concentrations in the central SCS than those in the northern *** mean rates of phytoplankton growth(μ0)and microzooplankton grazing(m)were(0.88±0.33)d–1 and(0.55±0.22)d–1 in the central SCS,and both higher than those in the northern SCS with the values ofμ0((0.81±0.16)d–1)and m((0.30±0.09)d–1),*** growth and microzooplankton grazing rates were significantly coupled in both *** microzooplankton grazing impact(m/μ0)on phytoplankton was also higher in the central SCS(0.63±0.12)than that in the northern SCS(0.37±0.06).The microzooplankton abundance was significantly correlated with temperature in the *** might more effectively promote the microzooplankton grazing rate than phytoplankton growth rate,which might contribute to higher m and m/μ0 in the central *** with temperature,nutrients mainly affected the growth rate of *** the nutrient enrichment treatment,the phytoplankton growth rate(μn)was higher thanμ0 in the central SCS,suggesting phytoplankton growth in the central SCS was nutrient *** ratio ofμ0/μn was significantly correlated with nutrients concentrations in the both areas,indicating the limitation of nutrients was related to the concentrations of background nutrients in the study stations.

关键词： dilution technique phytoplankton growth microzooplankton grazing South China Sea spring intermonsoon season

黄芪总黄酮对人子宫内膜癌细胞增殖、凋亡的影响

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妇儿健康导刊 2022年第12期1卷 11-13,F0003页

作者：孙聪聪崔金秀高学峰万金良滨州医学院附属医院妇科山东滨州256603 滨州医学院附属医院产科山东滨州256603 山东省惠民县人民医院急诊科山东惠民251700 滨州医学院附属医院肿瘤科山东滨州256603

目的探讨不同浓度黄芪总黄酮(TFA)对人子宫内膜癌KLE细胞生长的影响。方法培养KLE细胞株,分别加入终浓度为50、100、200、400、800μg/ml的TFA,继续培养12、24、48 h后,通过采用倒置相差显微镜观察、中性红比色法及流式细胞仪监测等方... 详细信息

目的探讨不同浓度黄芪总黄酮(TFA)对人子宫内膜癌KLE细胞生长的影响。方法培养KLE细胞株,分别加入终浓度为50、100、200、400、800μg/ml的TFA,继续培养12、24、48 h后,通过采用倒置相差显微镜观察、中性红比色法及流式细胞仪监测等方法观察TFA对KLE细胞的形态、生长抑制曲线、细胞周期和凋亡的影响。结果TFA明显抑制KLE细胞增殖,24 h作用最强;流式细胞仪检测显示TFA能使KLE细胞发生G1期阻滞,并诱导KLE细胞凋亡,其作用均随着TFA剂量增加而增强。结论TFA能够抑制KLE细胞增殖,阻滞细胞周期,诱导细胞凋亡。

关键词：黄芪总黄酮子宫内膜癌 KLE细胞株增殖凋亡

江苏省表面处理行业废酸处置利用现状及其问题分析

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环境工程技术学报 2017年第6期7卷 718-725页

作者：陈昊叶飞李兵焦少俊赵泽华孙聪聪南通市环境监测中心站江苏南通226006 环境保护部南京环境科学研究所江苏南京210042

为提升废酸处置利用行业的整体水平,江苏省环境保护厅于2016年对全省废无机酸处置利用行业开展了环境专项调查,调查对象覆盖江苏省9个地级市内已登记注册的49家废酸处置企业,对企业管理的规范性、工艺的合理性、生产的安全性和环保措施... 详细信息

为提升废酸处置利用行业的整体水平,江苏省环境保护厅于2016年对全省废无机酸处置利用行业开展了环境专项调查,调查对象覆盖江苏省9个地级市内已登记注册的49家废酸处置企业,对企业管理的规范性、工艺的合理性、生产的安全性和环保措施的有效性进行了评价,并按等级对企业进行评分。根据调查资料总结了江苏省不同表面处理行业废酸的产生规模、集中地区和危险特性等现状,探讨了省内表面处理废酸再生工艺及综合利用方法的特点和问题,并对江苏省废酸处置行业的规范和相关部门的管理提出了几点建议。

关键词：表面处理废酸专项调查危险特性综合利用