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Preparation of Photo-responsive DNA Supramolecular Hydrogels and Their Application as UV Radiometers

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Chemical Research in Chinese Universities 2023年第1期39卷 115-120页

作者： DING Yuqiao LI Yujie YANG Bo PAN yufan CHENG Jiafeng MENG Siwen LIU dongsheng XU Lijin dong Yuanchen Department of Chemistry Renmin University of ChinaBeijing100872P.R.China Engineering Research Center of Advanced Rare Earth Materials Ministry of EducationDepartment of ChemistryTsinghua UniversityBeijing100084P.R.China CAS Key Laboratory of Colloid Interface and Chemical ThermodynamicsBeijing National Laboratory for Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing100190P.R.China University of Chinese Academy of Sciences Beijing100049P.R.China

Ultraviolet light(UV)is an essential component of ambient light,but high dose UV would damage genome *** semiconductors and soft materials have been employed to detect the UV,the complex process and the instrumental requirement have limited the application in daily *** this study,taking advantage of sequence designability,a series of hydrogels with different gel-sol transition rates was constructed under the same UV intensity by introducing competing hybridization to tune the stability of the molecular *** estimating the transition time between each system under UV light irradiation,the intensity of UV could be roughly estimated,which provided a convenient method for the visual detection of UV.

关键词： Photo-responsive DNA hydrogel Azobenzene Gel-sol transition UV detection

术前CA19-9联合FIB含量预测肝癌切除术后早期复发的临床意义

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空军军医大学学报 2024年第3期45卷 257-262页

作者：甘雨吴相波但汉君董晓天管宇帆安家泽空军军医大学西京医院肝胆外科陕西西安710032 解放军第95685部队云南昆明650500 空军军医大学西京医院康复医学科空军军医大学西京消化病医院陕西西安710032

目的探讨糖类抗原19-9(CA19-9)联合纤维蛋白原(FIB)预测肝癌切除术后早期复发的临床意义。方法选取空军军医大学西京医院肝胆外科2020年6月至2021年6月收治的164例肝癌患者,手术切除后进行2年的随访,根据复发情况将患者分为早期复发组(n... 详细信息

目的探讨糖类抗原19-9(CA19-9)联合纤维蛋白原(FIB)预测肝癌切除术后早期复发的临床意义。方法选取空军军医大学西京医院肝胆外科2020年6月至2021年6月收治的164例肝癌患者,手术切除后进行2年的随访,根据复发情况将患者分为早期复发组(n=71)和非早期复发组(n=93)。收集患者基线资料,比较两组术前CA19-9及FIB含量水平差异,采用多因素logistic回归分析寻找影响肝癌切除术后早期复发的因素,使用受试者工作特征(ROC)曲线评价术前CA19-9及FIB预测肝癌切除术后早期复发的效能。结果164例患者中肝切除术后早期复发71例(43.3%)。多因素logistic回归分析显示,巴塞罗那肝癌(BCLC)分期较晚、肿瘤未分化、术中输血、术前甲胎蛋白(AFP)>400 g/L、CA19-9>17.95 U/mL及FIB>2.73 g/mL(均P400 g/L、CA19-9>17.95 U/mL及FIB>2.73 g/mL与肝癌患者切除术后早期复发密切相关,CA19-9与FIB含量联合预测肝癌切除术后早期复发的价值较高。

关键词： CA19-9 FIB 肝癌切除术早期复发

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龙井水库大坝的渗流和稳定分析

工程地质学报 2007年第6期15卷 802-805,795页

作者：郭家朋余金煌董育烦邓成发河海大学土木工程学院南京210098 安徽省淮委水利科学研究院蚌埠233000

本文以龙井水库大坝为例,运用有限单元法对粘土心墙坝的渗流进行分析计算,同时运用瑞典圆弧滑动法和简化Bishop法对粘土心墙坝的坝体稳定进行分析计算,在此基础上对水库大坝进行了渗流安全评价和稳定性安全评价。

关键词：粘土心墙坝渗流抗滑稳定瑞典条分法有限单元法

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苗尾水电站心墙坝接触土料质量控制指标探析

岩土工程技术 2020年第6期34卷 325-328页

作者：孟永旭董育烦尹飞陈梁王永明上海勘测设计研究院有限公司上海200335 中国电建集团华东勘测设计研究院有限公司浙江杭州311122 华东勘测设计院(福建)有限公司福建福州350000

水电水利工程通常采用塑性指数和黏粒含量来判别接触土料质量。土的塑性取决于黏粒部分中含有能与水发生物理化学作用的高亲水性黏土矿物的种类和含量,而塑性指数越大,土体的水稳定越差。通过分析,现行标准中对接触土料塑性指数和黏粒... 详细信息

水电水利工程通常采用塑性指数和黏粒含量来判别接触土料质量。土的塑性取决于黏粒部分中含有能与水发生物理化学作用的高亲水性黏土矿物的种类和含量,而塑性指数越大,土体的水稳定越差。通过分析,现行标准中对接触土料塑性指数和黏粒含量的指标界定不尽合理。提出以塑性指数Ip=10~26、活动性指数Ac=0.75~1.25作为接触土料质量控制指标。苗尾水电站土料黏粒含量低于规范要求,但计算得到活动性指数Ac为1.08~1.25,符合活动性指数要求,可作为接触土料利用。苗尾水电站建成投产后,根据监测资料,两岸接触性黏土位移较小,未发生塑性破坏,从而说明提出的控制指标是可行的。

关键词：心墙坝接触黏土高塑性土活动性指标塑性指数

Pancreatic steatosis and its correlation with clinicopathological features in patients with pancreatic neuroendocrine neoplasms

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Journal of Pancreatology 2023年第2期6卷 48-54页

作者： Yongzheng Li Jian Yang Zhiyao Fan Peng dong Jingjuan Hu Shujie Liu yufan Meng Changhao Gao Xin Gao Chaoyu Pang Hanxiang Zhan Division of Pancreatic Surgery Department of General SurgeryQilu Hospital of Shandong UniversityJinanShandong ProvinceChina Department of Nephrology Shouguang Hospital of Traditional Chinese MedicineWeifangShandong ProvinceChina

Background and objective:The incidence of pancreatic neuroendocrine neoplasms(pNENs)has been increasing year by year,and pancreatic steatosis has been paid more and more attention to by *** study aims to reveal the correlation between pancreatic steatosis,clinicopathological parameters,and the prognosis of patients with ***:The clinicopathological data of patients with pNENs who underwent surgical resections in our institution from January 2013 to May 2022 were retrospectively *** mean computed tomography(CT)values of the pancreas and spleen were used to assess the severity of the pancreatic *** Chi-square test,T test,Mann Whitney U test,Univariate Cox re-gression,and Multivariate Cox regression were used to explore the relationship between pancreatic steatosis and age,sex,body mass index,tumor type,tumor location,tumor stage,blood lipid,prognosis,and other ***:A total of 122 patients were included in our study,and 19.67%have pancreatic *** incidence of pancreatic steatosis was significantly higher in patients with fatty liver than in patients without fatty liver(36.8%vs 16.5%,P=.04).In insu-linoma,the incidence of pancreatic steatosis in elderly patients was significantly higher than in young and middle-aged patients(41.7%vs 9.3%,P=.025).There was no significant difference in lipid levels between the pancreatic steatosis group and the non-pancreatic steatosis group(P>.05).Kaplan-Meier curves show that the prognosis of stage III/IV patients was significantly worse than that of stage I/II patients(P<.001).However,there was no significant difference in prognosis between patients with and without pancreatic steatosis(P=.404).Conclusion:The incidence of pancreatic steatosis was significantly higher in those with fatty liver than those without fatty *** is a high incidence of pancreatic steatosis in elderly patients with *** Joint Committee on Cancer(AJCC)stage,but not pancreatic st

关键词： Blood lipid Fatty liver Pancreatic neuroendocrine neoplasms Pancreatic steatosis Prognosis

Picosecond electrical response in graphene/MoTe_(2) heterojunction with high responsivity in the near infrared region

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Fundamental Research 2022年第3期2卷 405-411页

作者： Zhouxiaosong Zeng Kai Braun Cuihuan Ge Martin Eberle Chenguang Zhu Xingxia Sun Xin Yang Jiali Yi Delang Liang yufan Wang Lanyu Huang Ziyu Luo dong Li Anlian Pan Xiao Wang School of Physics and Electronics Hunan UniversityChangsha 410082China Institute of Physical and Theoretical Chemistry and LISA+ University of TübingenAuf der Morgenstelle 18Tübingen 72076Germany Key Laboratory for Micro-Nano Physics and Technology of Hunan Province College of Materials Science and EngineeringHunan UniversityChangsha 410082China

Understanding the fundamental charge carrier dynamics is of great significance for photodetectors with both high speed and high *** based on two-dimensional(2D)transition metal dichalcogenides can exhibit picosecond photoresponse ***,2D materials naturally have low absorption,and when increasing thickness to gain higher responsivity,the response time usually slows to nanoseconds,limiting their photodetection ***,by taking time-resolved photocurrent measurements,we demonstrated that graphene/MoTe_(2) van der Waals heterojunctions realize a fast 10 ps photoresponse time owing to the reduced average photocurrent drift time in the heterojunction,which is fundamentally distinct from traditional Dirac semimetal photodetectors such as graphene or Cd_(3)As_(2) and implies a photodetection bandwidth as wide as 100 ***,we found that an additional charge carrier transport channel provided by graphene can ef-fectively decrease the photocurrent recombination loss to the entire device,preserving a high responsivity in the near-infrared *** study provides a deeper understanding of the ultrafast electrical response in van der Waals heterojunctions and offers a promising approach for the realization of photodetectors with both high responsivity and ultrafast electrical response.

关键词： Two-dimension material Graphene/MoTe_(2)heterojunction Near infrared photodetector Scanning photocurrent microscopy Time-resolved photocurrent

Efficient and stable CsPbBr3 perovskite solar cells with CB as additive

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Efficient and stable CsPbBr3 perovskite solar cells with CB ...

航空发动机初步设计阶段榫接结构前置判别方法

第十届新型太阳能材料科学与技术学术研讨会

作者： Yang Meili Zou Li Cheng Jiajie Wang Jiaming Jiang yufan dong Jingjing School of Science China University of Geosciences (Beijing)

All-inorganic CsPbBr perovskite solar cells(PSCs) with excellent thermal and moisture ***,there are large defects in the perovskite absorber films and serious non-radiative recombination,resulting in a low power conversion *** this,this study used additive engineering to improve the shape and quality of CsPbBr perovskite films by using chlorobenzene as an additive to deal with the large number of defects in the CsPbBr perovskite *** was found that the large density and high boiling point of chlorobenzene treatment of PbBr films can make the PbBr solution in a supersaturated state during spin coating and speed up the crystallization process of PbBr,so as to obtain more loosely porous PbBr films,and thus regulate the growth process of perovskite films and achieve efficient and stable CsPbBr perovskite *** CB treatment,the CsPbBr perovskite solar cell has smaller non-radiative recombination and higher light absorption,achieving a power conversion efficiency of 9.28% in the end.

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航空动力学报 2022年第11期37卷 2362-2375页

作者：董少静方宇凡胡文通申秀丽北京航空航天大学能源与动力工程学院北京100191 北京航空航天大学航空发动机结构强度北京市重点实验室北京100191 中国兵器工业集团导航与控制技术研究所北京100089

为适应自约束参数化建模方法所导致的非正交参数取值范围,提出了将传统正交设计空间的抽样点映射到非正交空间的映射方法。构建了基于机器学习逻辑回归的可行域边界识别方法,对样本空间响应是否满足相关准则进行判断。将此方法应用于某... 详细信息

为适应自约束参数化建模方法所导致的非正交参数取值范围,提出了将传统正交设计空间的抽样点映射到非正交空间的映射方法。构建了基于机器学习逻辑回归的可行域边界识别方法,对样本空间响应是否满足相关准则进行判断。将此方法应用于某高压涡轮二齿和三齿榫接结构,发现某发动机初步设计方案会导致在详细设计阶段无法获得满足设计要求的榫接结构,需将榫接结构参数前置至初步设计阶段,与上级参数共同设计,防止其在详细设计阶段成为设计难点。通过边界识别方法发现,转速降低为15 575 r/min或轮盘外径降低为303 mm时可以设计出二齿榫接结构;转速降低为15 584 r/min或轮盘外径降低为301 mm时可以设计出三齿榫接结构。该方法可以作为发动机初步设计阶段各学科之间的一个迭代反馈信息,在发动机其他细节结构设计上具有推广性。

关键词：初步设计阶段颠覆性设计榫接结构可行域边界识别前置参数设计

福建东吾洋海域海水和沉积物菌群结构及其与环境因子相关性

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渔业科学进展 2024年第2期45卷 186-198页

作者：张铭洋李昊王印庚马翠萍陈夫山黄强廖梅杰李彬王锦锦葛建龙荣小军王与凡青岛科技大学海洋科学与生物工程学院山东青岛266042 中国水产科学研究院黄海水产研究所山东青岛266071 霞浦县海洋渔业发展中心福建宁德355100

福建东吾洋海域是我国刺参(Apostichopus japonicus)吊笼养殖的核心产区,但目前该地区的水域环境现状和环境菌群结构相关研究匮乏。本研究以东吾洋海域东安、马坑、雷江和沙湾4个主要养殖区域为对象,完成了海参养殖高峰期1月的水质环境... 详细信息

福建东吾洋海域是我国刺参(Apostichopus japonicus)吊笼养殖的核心产区,但目前该地区的水域环境现状和环境菌群结构相关研究匮乏。本研究以东吾洋海域东安、马坑、雷江和沙湾4个主要养殖区域为对象,完成了海参养殖高峰期1月的水质环境因子调查和评价分析,采用高通量测序方法完成了水体和沉积物菌群多样性和差异特征菌群分析,解析了环境因子与菌群结构相关性。结果表明,马坑海域的富营养化指数为21.60,属于严重富营养化;东安和雷江海域属于重度富营养,只有沙湾海域处于中度富营养的水平。东安和沙湾海域水质属于轻度有机污染,而马坑和雷江海域属于中度有机污染。高通量测序共获得1 520个操作分类单元(operational taxonomic units, OTUs),归属于28门、57纲、163目、322科、581属。菌群结构多样性分析表明,各区域沉积物的菌群多样性水平均显著高于相应海域水体菌群多样性,且具有较强的空间异质性。沙湾海域环境菌群多样性与丰度最高。PCo A分析表明,沉积物和水体中细菌群落结构差异极显著,水体交换和海域位置对其水体和沉积物菌群结构的影响较大。具有潜在致病性的弧菌科(Vibrionaceae)在所有水体和沉积物样本中均为优势种类之一。对水体样品和沉积物样品的LEFSe(line discriminant analysis effect size)分析筛选到处于不同分类水平的74个特异菌群。基因功能的预测和COG分类统计表明,水体与沉积物样品在12个代谢途径上存在显著差异(P<0.05)。对4个海区的水体菌群LEFSe分析筛选到处于不同分类水平的30个特异菌群。水体的菌群与环境因子的RDA分析揭示,温度、溶氧、叶绿素a浓度是影响不同海域水体菌群结构的主要环境因子,相关研究将为福建刺参养殖管理提供基础数据和科学参考。

关键词：东吾洋海域刺参吊笼养殖环境评价菌群结构分析