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“双支撑、三结合”化学安全实践育人体系的构建

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大学化学 2024年第7期39卷 69-75页

作者：闫瑾童程霞李雅洁谷月屈学俭魏士刚朱万春郭玉鹏吉林大学化学学院长春130012 吉林大学化学国家级实验教学示范中心长春130012

随着社会对化学专业人才安全素养的要求日益提高,各高校逐渐意识到化学实验室安全教育的重要性。但当前的化学安全教育普遍缺乏系统性,为了扭转这样的局面,吉林大学化学学院依托化学国家级实验教学示范中心为平台,基于OBE (Outcome-Base... 详细信息

随着社会对化学专业人才安全素养的要求日益提高,各高校逐渐意识到化学实验室安全教育的重要性。但当前的化学安全教育普遍缺乏系统性,为了扭转这样的局面,吉林大学化学学院依托化学国家级实验教学示范中心为平台,基于OBE (Outcome-Based Education)教育理念,以硬件建设和知识载体为双支撑、采取“理论与实践相结合、课内课外相结合、虚拟与现实相结合”的三结合实施路径,构建化学安全实践育人体系,使学生安全意识、安全知识和应急能力螺旋式上升,全面提升学生的化学安全素养。

关键词：化学安全实践示范中心育人体系

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Polaron interfacial entropy as a route to high thermoelectric performance in DAE-doped PEDOT:PSS films

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National Science Review 2024年第3期11卷 259-270页

作者： Jiajia Zhang Caichao Ye Genwang Wei Liang guo Yuhang Cai Zhi Li Xinzhi Wu Fangyi Sun Qikai Li yupeng Wang Huan Li Yuchen Li Shuaihua Wang Wei Xu Xuefeng guo Wenqing Zhang Weishu Liu Department of Materials Science and Engineering Southern University of Science and Technology Academy for Advanced Interdisciplinary Studies and Guangdong Provincial Key Laboratory of Computational Science and Material Design Southern University of Science and Technology Department of Mechanical and Energy Engineering Southern University of Science and Technology Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences College of Chemistry and Molecular Engineering National Biomedical Imaging Centre Peking University Guangdong Provincial Key Laboratory of Functional Oxide Materials and Devices Southern University of Science and Technology

Enhancing the thermoelectric transport properties of conductive polymer materials has been a long-term challenge, in spite of the success seen with molecular doping strategies. However, the strong coupling between the thermopower and the electrical conductivity limits thermoelectric performance. Here, we use polaron interfacial occupied entropy engineering to break through this intercoupling for a PEDOT:PSS(poly（3,4-ethylenedioxythiophene）-poly（4-styrenesulfonate）) thin film by using photochromic diarylethene（DAE） dopants coupled with UV-light modulation. With a 10-fold enhancement of the thermopower from 13.5 μV K-1to 135.4 μV K-1and almost unchanged electrical conductivity, the DAE-doped PEDOT:PSS thin film achieved an extremely high power factor of 521.28 μW m-1K-2from an original value of 6.78 μW m-1K-2. The thermopower was positively correlated with the UV-light intensity but decreased with increasing temperature, indicating resonant coupling between the planar closed DAE molecule and PEDOT. Both the experiments and theoretical calculations consistently confirmed the formation of an interface state due to this resonant coupling. Interfacial entropy engineering of polarons could play a critical role in enhancing the thermoelectric performance of the organic film.

关键词： thermoelectric PEDOT: PSS interfacial occupied entropy resonant coupling UV-light modulation

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氧化剂一步法改变氧化铁红色泽

高等学校化学学报 2018年第12期39卷 2734-2738页

作者：姜雪付瑶黄丹郭玉鹏吉林大学化学学院长春130012

以氧化铁红为原料,采用硫酸一步煅烧法制备出色泽品质更高的铁红.结果表明,氧化铁红与60%(质量分数)的硫酸在750℃条件下混合煅烧效果最佳,产物色泽有明显的改善.通过X射线衍射(XRD)、扫描电子显微镜(SEM)、高分辨率透射电子显微镜(HRT... 详细信息

以氧化铁红为原料,采用硫酸一步煅烧法制备出色泽品质更高的铁红.结果表明,氧化铁红与60%(质量分数)的硫酸在750℃条件下混合煅烧效果最佳,产物色泽有明显的改善.通过X射线衍射(XRD)、扫描电子显微镜(SEM)、高分辨率透射电子显微镜(HRTEM)、紫外-可见光谱(UV-Vis)及元素分析(EDX)等手段表征,发现煅烧前后氧化铁红的晶型不变,但煅烧后形貌更加规则,粒径更加均一,颜色更加鲜艳.

关键词：氧化铁红色泽改善可见光晶体

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沥青改性稻壳基活性炭的制备及电化学性能

高等学校化学学报 2018年第6期39卷 1242-1248页

作者：刘艳华金璐薛北辰郭玉鹏吉林大学化学学院长春130012

以固定碳含量高、导电性好的沥青为改性剂,通过低温混匀、中温固化的方法对稻壳基活性炭进行改性.结果表明,沥青与活性炭的最优质量比为1∶5,沥青改性后的稻壳基活性炭在1 mol/L Et4NBF4/PC电解液中,体积比电容由67.54 F/mL提升至84.34 ... 详细信息

以固定碳含量高、导电性好的沥青为改性剂,通过低温混匀、中温固化的方法对稻壳基活性炭进行改性.结果表明,沥青与活性炭的最优质量比为1∶5,沥青改性后的稻壳基活性炭在1 mol/L Et4NBF4/PC电解液中,体积比电容由67.54 F/mL提升至84.34 F/mL.在1 A/g电流密度下恒流充放电10000次后,沥青改性的活性炭仍有91.52%的电容保持率,远高于未改性活性炭的保持率(84.11%).

关键词：改性稻壳基活性炭超级电容器沥青

CeO_2对2A12铝合金微弧氧化膜层组织和性能的影响

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稀有金属材料与工程 2015年第9期44卷 2240-2244页

作者：郭豫鹏狄士春吕鹏翔孙术发哈尔滨工业大学黑龙江哈尔滨150001 东北林业大学黑龙江哈尔滨150040

在硅酸盐电解液中添加稀土二氧化铈(Ce O2)颗粒,采用恒流模式在2A12铝合金表面制备陶瓷膜层。通过扫描电子显微镜、X射线衍射仪、粗糙度仪、硬度计、极化曲线等手段研究Ce O2颗粒对2A12铝合金微弧氧化陶瓷膜层微观形貌、组织、粗糙度、... 详细信息

在硅酸盐电解液中添加稀土二氧化铈(Ce O2)颗粒,采用恒流模式在2A12铝合金表面制备陶瓷膜层。通过扫描电子显微镜、X射线衍射仪、粗糙度仪、硬度计、极化曲线等手段研究Ce O2颗粒对2A12铝合金微弧氧化陶瓷膜层微观形貌、组织、粗糙度、硬度和耐蚀性的影响。实验结果表明:添加Ce O2使膜层表面微孔直径减小,膜层粗糙度下降,厚度增加。Ce O2颗粒进入膜层中大部分以Ce O2化合物沉积形式存在,微量Ce O2参与反应以Ce O、Ce Al11O8化合物形式存在。Ce O2颗粒具有促进γ-Al2O3向α-Al2O3转变的作用,从而提高了膜层的硬度。当Ce O2浓度为3~4 g/L时膜层耐蚀性能较好。

关键词：微弧氧化二氧化铈硬度耐蚀性

HCCDB v2.0:Decompose Expression Variations by Single-cell RNA-seq and Spatial Transcriptomics in HCC

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Genomics, Proteomics & Bioinformatics 2024年第1期22卷 131-142页

作者： Ziming Jiang Yanhong Wu Yuxin Miao Kaige Deng Fan Yang Shuhuan Xu yupeng Wang Renke You Lei Zhang Yuhan Fan Wenbo guo Qiuyu Lian Lei Chen Xuegong Zhang Yongchang Zheng Jin Gu Eight-Year Program of Clinical Medicine Peking Union Medical College HospitalChinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 100006China MOE Key Laboratory of Bioinformatics BNRIST Bioinformatics DivisionInstitute for Precision Medicine&Department of AutomationTsinghua UniversityBeijing 100084China Department of Liver Surgery Peking Union Medical College HospitalChinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 100730China Fuzhou Institute for Data Technology Fuzhou 350207China University of Michigan-Shanghai Jiao Tong University Joint Institute Shanghai Jiao Tong UniversityShanghai 200240China Department of Automation Shanghai Jiao Tong UniversityShanghai 200240China International Cooperation Laboratory on Signal Transduction Eastern Hepatobiliary Surgery InstituteSecond Military Medical UniversityShanghai 200438China National Center for Liver Cancer Shanghai 201805China

Large-scale transcriptomic data are crucial for understanding the molecular features of hepatocellular carcinoma(HCC).Integrated 15 transcriptomic datasets of HCC clinical samples,the first version of HCC database(HCCDB v1.0)was released in *** the meta-analysis of differentially expressed genes and prognosis-related genes across multiple datasets,it provides a systematic view of the altered biological processes and the inter-patient heterogeneities of HCC with high reproducibility and *** four years having passed,the database now needs integration of recently published ***,the latest single-cell and spatial transcriptomics have provided a great opportunity to decipher complex gene expression variations at the cellular level with spatial ***,we present HCCDB v2.0,an updated version that combines bulk,single-cell,and spatial transcriptomic data of HCC clinical *** dramatically expands the bulk sample size by adding 1656 new samples from 11 datasets to the existing 3917 samples,thereby enhancing the reliability of transcriptomic meta-analysis.A total of 182,832 cells and 69,352 spatial spots are added to the single-cell and spatial transcriptomics sections,respectively.A novel single-cell level and 2-dimension(sc-2D)metric is proposed as well to summarize cell type-specific and dysregulated gene expression *** are all graphically visualized in our online portal,allowing users to easily retrieve data through a user-friendly interface and navigate between different *** extensive clinical phenotypes and transcriptomic data in the database,we show two applications for identifying prognosis-associated cells and tumor *** v2.0 is available at http://***/database/hccdb2.

关键词： Hepatocellular carcinoma Database Integrative analysis Single-cell RNA sequencing Spatial transcriptomics

CRISPR/Cas9-mediated knockout of E4 gene promotes maturation in soybean

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Oil Crop Science 2024年第3期9卷 170-176页

作者： Shuiqing Wu Li Chen Mengwei guo yupeng Cai Yang Gao Shan Yuan Shi Sun Yuxian Zhang Wensheng Hou Tianfu Han College of Agriculture Heilongjiang Bayi Agricultural UniversityDaqing163316China Ministry of Agriculture Key Laboratory of Soybean Biology(Beijing) Institute of Crop SciencesChinese Academy of Agricultural SciencesBeijing100081China College of Agriculture Northeast Agricultural UniversityHarbin150030China State Key Laboratory of Crop Germplasm Innovation and Molecular Breeding Syngenta Biotechnology(China)Co.LtdBeijing100081China

Soybean is a broadly popular and extensively cultivated crop,however,many high-yield and high-quality varieties require specific growth conditions,restricting their widespread *** appropriate light conditions and photoperiod must be attained for these varieties to thrive in new *** this study,we employed CRISPR/Cas9 to design two sgRNAs aimed at knocking out the maturity-related gene E4 in a major American soybean variety called''Jack'',which belongs to maturity group MGII.E4 gene is primarily involved in the photoperiodic flowering and maturity in soybean,making it an ideal candidate for genetic *** successfully obtained 1 homozygous E4-SG1 mutant type with 1-bp insertion,and 4 homozygous E4-SG2 mutants type with 2-bp deletion,7-bp deletion,61-bp deletion,and 1-bp insertion,*** homozygous e4 mutant plants contained early termination codons devoid of transgenic ***,no potential offtarget sites of the E4 gene were detected.A comparative analysis revealed that,unlike the wild-type,the maturity time of homozygous e4 mutants was early under both short-day and long-day *** mutants offer novel germplasm resources that may be used to modify the photoperiod sensitivity and maturity of soybean,enhancing its adaptability to high-latitude regions.

关键词： Soybean E4 CRISPR/Cas9 Maturity

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天冬氨酸调控糖果状碳酸钙的仿生合成及性能

高等学校化学学报 2023年第6期44卷 23-30页

作者：刘高远刘跃含赵丽娜郭玉鹏吉林师范大学环境友好材料制备与应用教育部重点实验室长春130103 吉林师范大学化学学院四平136000 吉林大学化学学院长春130012

利用仿生合成原理,选取天冬氨酸作为诱导剂,采用沉淀反应法制备出糖果状球霰石型碳酸钙粒子,并对其结构和性能进行了表征.考察了反应温度、诱导剂用量和反应时间等对碳酸钙粒子晶型和形貌的影响,探讨了其反应原理.结果表明,所得碳酸钙... 详细信息

利用仿生合成原理,选取天冬氨酸作为诱导剂,采用沉淀反应法制备出糖果状球霰石型碳酸钙粒子,并对其结构和性能进行了表征.考察了反应温度、诱导剂用量和反应时间等对碳酸钙粒子晶型和形貌的影响,探讨了其反应原理.结果表明,所得碳酸钙粒子荧光性增强.此方法对碳酸钙的仿生合成与改性研究具有一定的指导意义.

关键词：碳酸钙沉淀反应糖果状仿生合成

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结合图元与感知哈希的手写输入简笔画识别

中国图象图形学报 2015年第9期20卷 1222-1229页

作者：郭玉鹏曹卫群北京林业大学信息学院北京100083

目的为了克服手写输入中随意性强和自由度大的缺陷,同时兼顾简笔画的整体属性和局部特征,提出一种基于图元识别与感知哈希技术相结合的手写输入简笔画二级识别算法。方法首先提取笔画的几何特征、笔序特征及结构特征且进行识别,然后查... 详细信息

目的为了克服手写输入中随意性强和自由度大的缺陷,同时兼顾简笔画的整体属性和局部特征,提出一种基于图元识别与感知哈希技术相结合的手写输入简笔画二级识别算法。方法首先提取笔画的几何特征、笔序特征及结构特征且进行识别,然后查找由图元信息、笔画结构信息和笔序信息构成的简笔画语义库,完成由规则的几何图元构成的简笔画识别;若未被识别,则生成简笔画图像,利用感知哈希技术完成简笔画图像的识别。结果基于本文提出的简笔画识别方法,实现了对样本库中150种简笔画对象的识别,平均识别率为82.6%。结论实验结果表明,对于不同用户手写输入的任意样本库中的简笔画,该方法具有较高的识别率,此外,还可以通过在简笔画语义库和样本库中增加简笔画的种类等方式实现对更多种类简笔画的扩展识别。

关键词：简笔画图元 KNN分类器感知哈希技术二级识别算法