检索结果-南通市图书馆

Chemical Research in Chinese Universities 2019年第3期35卷 370-376页

作者： WU Shuo yang xinlan ZHAO Yanqiu School of Chemistry Dalian University of TechnologyDalian 116023P. R. China

A biomolecule-free photoelectrochemical(PEC) probe(denoted as Ru-1) was designed, synthesized and coupled with TiO2 nanoparticles(NPs) for the highly sensitive and selective PEC detection of Hg^2+, a model analyte with hypertoxicity to both human health and ecosystem. The probe Ru-1 was designed with Ru(Ⅱ) bipyridyl complex as the chromophore, thiocyanate ligand as the recognition unit, and carboxylate group as the linkage site to connect Ru-1 to TiO2 nanoparticles. Under irradiation, Ru-1 shows strong affinity to TiO2 and good photophysical properties of strong visible light absorption, slow electron-hole(e-h^+) recombination, and fast photoelectron injection to TiO2 nanoparticles via the bridge of 4-(2,2-bipyridin)-4-yl-thiophene moiety. However, the specific coordination of Hg^2+ with Ru-1 via the thiol moiety in the thiocyanate enlarges the band gap of tlie complex and reduces the photocurrent significantly. The synergistic interaction between TiO2 nanoparticles and the Ru-1 complex led to a selective PEC sensing strategy for Hg^2+ detection. Detectable linear ranges from 10^-12 g/mL to 10^-7 g/mL and from 10^-7g/mL to 10^-3 g/mL were obtained without the interference from possibly co-existed metal ions. The good analytical performances indicate the chemical probe based biomolecule-free PEC platform may offer a new route for the detection of biologically and environmentally important small molecules.

关键词： Photoelectrochemical probe Ru(II) bipyridyl complex Hg2+ detection Nanocomposite

Knockout of ISCA 1 causes early embryonic death in rats

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Animal Models and Experimental Medicine 2019年第1期2卷 18-24页

作者： xinlan yang Dan Lu Xu Zhang Wei Chen Shan Gao Wei Dong Yuanwu Ma Lianfeng Zhang Key Laboratory of Human Disease Comparative Medicine National Health Commission of China (NHC)Institute of Laboratory Animal SciencePeking Union Medical CollegeChinese Academy of Medical Sciences Beijing Engineering Research Center for Experimental Animal Models of Human Diseases Institute of Laboratory Animal SciencePeking Union Medical CollegeChinese Academy of Medical Sciences Neuroscience Center Chinese Academy of Medical Sciences

Background : Iron-sulfur cluster assembly 1( ISCA 1) is an iron-sulfur(Fe/S) carrier protein that accepts Fe/S from a scaffold protein and transfers it to target proteins including the mitochondrial Fe/S containing proteins. ISCA 1 is also the newly identified causal gene for multiple mitochondrial dysfunctions syndrome( MMDS). However, our knowledge about the physiological function of ISCA 1 in vivo is currently limited. In this study, we generated an ISCA 1 knockout rat line and analyzed the embryo development. Methods : ISCA 1 knockout rats were generated by replacing the exon1 of ISCA 1 gene with the mC herry-Cre fusion gene using CRISPR-Cas9 technology. The ISCA 1 expression pattern was analyzed by fluorescence imaging using ISCA 1 promotor driven Cre and mC herry expression. The embryonic morphology was examinated by microscope and mitochondrial proteins were tested by Western blot. Results : An ISCA 1 knockout rat line was obtained, which expressed mC herry-Cre fusion protein. Both of the fluorescence images from mC herry and Cre induced mC herry in a reporter rat strain, showing that ISCA 1 expressed in most of the tissues in rats. The ISCA 1 knockout resulted in abnormal development at 8.5 days, with a significant decrease of NDUFA 9 protein and an increase of aconitase 2( ACO 2) in rat embryos. Conclusion : Deletion of ISCA 1 induced early death in rats. ISCA 1 affected the expression of key proteins in the mitochondrial respiratory chain complex, suggesting that ISCA 1 has an important influence on the respiratory complex and energy metabolism.

关键词： embryonic development energy metabolism ISCA 1

ACID ELECTROLYTIC TREATMENT PROCESS OF SCRAP BATTERY SLUDGE

在线全文

学校读者我要写书评

暂无评论

中国有色金属学会会刊：英文版 1997年第4期7卷 139-143页

作者： Chen Weiping, Zeng Yue, yang Xia, Chen xinlan, Jing Yanbo Institute of Environmental Protection, Hunan University, Changsha 410082

ＡＣＩＤＥＬＥＣＴＲＯＬＹＴＩＣＴＲＥＡＴＭＥＮＴＰＲＯＣＥＳＳＯＦＳＣＲＡＰＢＡＴＴＥＲＹＳＬＵＤＧＥ①ＣｈｅｎＷｅｉｐｉｎｇ，ＺｅｎｇＹｕｅ，ＹａｎｇＸｉａ，ＣｈｅｎＸｉｎｌａｎ，ＪｉｎｇＹａｎｂｏＩｎｓｔｉｔｕ... 详细信息

ＡＣＩＤＥＬＥＣＴＲＯＬＹＴＩＣＴＲＥＡＴＭＥＮＴＰＲＯＣＥＳＳＯＦＳＣＲＡＰＢＡＴＴＥＲＹＳＬＵＤＧＥ①ＣｈｅｎＷｅｉｐｉｎｇ，ＺｅｎｇＹｕｅ，ＹａｎｇＸｉａ，ＣｈｅｎＸｉｎｌａｎ，ＪｉｎｇＹａｎｂｏＩｎｓｔｉｔｕｔｅｏｆＥｎｖｉｒｏｎｍｅｎｔａｌ...

关键词： lead battery sludge acid electrolytic treatment

拉萨河中上游夏秋季纤毛虫群落时空变动及其与环境的关系

在线全文

学校读者我要写书评

暂无评论

生态学报 2019年第9期39卷 3121-3132页

作者：杨欣兰巴桑黄香西藏大学理学院青藏高原湿地与流域生态实验室拉萨850000 西藏大学理学院化学与环境科学系拉萨850000

为揭示中国西藏高原河流浮游纤毛虫群落结构特征及与水环境的关系,于2015—2016年的8月和11月,利用25号浮游生物网,分别在拉萨河中上游共8个代表性采样点,共采集64个水样。物种鉴定采用活体观察和固定染色相结合的方法。共鉴定出纤毛虫9... 详细信息

为揭示中国西藏高原河流浮游纤毛虫群落结构特征及与水环境的关系,于2015—2016年的8月和11月,利用25号浮游生物网,分别在拉萨河中上游共8个代表性采样点,共采集64个水样。物种鉴定采用活体观察和固定染色相结合的方法。共鉴定出纤毛虫91种,夏季49种,各样点物种数由小到大依次为:S2

关键词：纤毛虫群落结构时空变化拉萨河西藏

Loosely coordinating diluted highly concentrated electrolyte toward -60℃ Li metal batteries

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2024年第3期90卷 380-387,I0009页

作者： Han Zhang Ziqi Zeng Qiang Wu xinlan Wang Mingsheng Qin Sheng Lei Shijie Cheng Jia Xie State Key Laboratory of Advanced Electromagnetic Technology School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074HubeiChina State Key Laboratory of Materials Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074HubeiChina

Lithium metal batteries(LMBs) promise energy density over 400 Wh kg^(-1).However,they suffer severe electrochemical performance deterioration at sub-zero *** failure behavior highly correlates to inferior lithium metal anode(LMA) compatibility and sluggish Li^(+) ***,we demonstrate that cyclopentylmethyl ether(CPME) based diluted high-concentration electrolyte(DHCE)enables-60℃ LMBs *** leveraging the loose coordination between Li^(+) and CPME,such developed electrolyte boosts the formation of ion clusters to derive anion-dominant interfacial chemistry for enhancing LMA compatibility and greatly accelerates Li^(+) desolvation *** resulting electrolyte demonstrates high Coulombic efficiencies(CE),providing over 99.5%,99.1%,98.5% and 95% at 25,-20,-40,and-60℃*** assembled Li-S battery exhibits remarkable cyclic stability in-20,and-40℃ at 0.2 C charging and 0.5 C *** at-60℃,Li-S cell with this designed electrolyte retains> 70% of the initial capacity over 170 ***,lithium metal coin cell and pouch cell with10 mg cm^(-2) high S cathode loading exhibit cycling stability at-20℃.This work offers an opportunity for rational designing electrolytes toward low temperature LMBs.

关键词： Lithium metal batteries -60℃operation Lithium metal anode compatibility Li^(+) desolvation kinetics

High-safety and high-voltage lithium metal batteries enabled by nonflammable diluted highly concentrated electrolyte

在线全文

学校读者我要写书评

暂无评论

Nano Research 2024年第4期17卷 2638-2645页

作者： Han Zhang Ziqi Zeng Shuping Wang Yuanke Wu Changhao Li Mengchuang Liu xinlan Wang Shijie Cheng Jia Xie State Key Laboratory of Materials Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074China State Grid Anhui Electric Power Research Institute Anhui Province Key Laboratory of Electric Fire and Safety Protection(State Grid Laboratory of Fire Protection for Transmission and Distribution Facilities)Hefei 230601China School of Chemistry and Chemical Engineering Huazhong University of Science and TechnologyWuhan 430074China

Lithium metal batteries(LMBs)show great promise for achieving energy densities over 400 Wh·kg^(-1).However,highly flammable organic electrolytes are a long-lasting problem that triggers safety hazards and hinders the commercial application of ***,a nonflammable diluted highly concentrated electrolyte(DHCE)with ethoxy(pentafluoro)cyclotriphosphazene(PFPN)as a diluent is developed to simultaneously achieve high safety and cycling stability of high-voltage *** optimal DHCE not only ensures reversible Li deposition/dissolution behavior with a superior average Coulombic efficiency(CE)over 99.1%on lithium metal anode(LMA),but also suppresses side reactions and stress crack on the LiCoO_(2)(LCO)under high cut-off *** newly developed DHCE exhibits high thermal stability,showing complete nonflammability and reduced heat generation between the electrolyte and delithiated LCO/cycled *** work offers an opportunity for rational designing nonflammable electrolytes toward high-voltage and safe LMBs.

关键词： lithium metal batteries thermal stability nonflammable electrolyte high-voltage phosphazene

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

银行全面风险管理的帕累托改进

中国金融 2022年第19期 62-64页

作者：杨新兰中国农业银行风险管理部

全面风险管理作为银行集团的核心功能,其机制、系统、流程和技术必须伴随金融风险演变而进行“预应性”变革。笔者基于对当前金融风险新变化及银行集团风险挑战的分析,探究我国银行集团全面风险管理帕累托改进所遵循的一般逻辑和实施路径。

关键词：全面风险管理帕累托改进风险挑战实施路径风险演变核心功能风险新变化银行

西藏羊卓雍错高原裸鲤肠道寄生蠕虫的种群生态

在线全文

学校读者我要写书评

暂无评论

中国水产科学 2022年第1期29卷 149-156页

作者：潘瑛子杨欣兰曾本和牟振波西藏自治区农牧科学院水产科学研究所西藏土著鱼类繁育与利用技术工程研究中心

高原裸鲤(Gymnocypris waddellii)是西藏高原重要的土著裂腹鱼类,本研究调查了藏南内流湖泊羊卓雍错高原裸鲤肠道寄生蠕虫的种群生态学,对180尾高原裸鲤寄生蠕虫进行种类鉴定和感染数量统计分析。结果显示,羊卓雍错高原裸鲤肠道寄生蠕虫... 详细信息

高原裸鲤(Gymnocypris waddellii)是西藏高原重要的土著裂腹鱼类,本研究调查了藏南内流湖泊羊卓雍错高原裸鲤肠道寄生蠕虫的种群生态学,对180尾高原裸鲤寄生蠕虫进行种类鉴定和感染数量统计分析。结果显示,羊卓雍错高原裸鲤肠道寄生蠕虫由5个物种构成,分别为聂氏拟短节绦虫(Parabreviscolex niepini)、对盲囊线虫(Contracaecum eudyptulae)、束首线虫未定种(Streptocara sp.)、新棘吻虫未定种(Neoechinorhynchus sp.)和异肉吸虫属未定种(Allocreadium sp.)。新棘吻虫未定种的感染率最高,聂氏拟短节绦虫的感染强度和平均丰度最高,束首线虫未定种的感染率、感染强度和平均丰度最低。独立样本T检验表明,各个肠道寄生蠕虫种群感染高原裸鲤群体的平均丰度均不存在宿主雌雄间的显著性差异(P>0.05)。相关性分析结果显示各种群感染数量与宿主全长也不存在显著相关(P>0.05)。用方差均值比分析5个种群的分布类型,结果显示均呈聚集分布。将各个种群感染宿主数量的频率分别与负二项分布进行拟合,用χ~2检验判断结果的显著性,发现聂氏拟短节绦虫和束首线虫未定种种群虽然呈聚集分布,但并不符合负二项分布。5个种群中均以未感染的宿主频次为最高,在感染情况下,聂氏拟短节绦虫以感染1～5条的宿主出现频次最高,***和异肉吸虫未定种以感染1条的宿主出现频次最高,束首线虫未定种感染数量为1～6条的宿主出现频次均较低且相近,新棘吻虫未定种感染1～2条的宿主出现频次最高。本研究为摸清各肠道寄生蠕虫种群的基本情况,进一步了解西藏土著鱼类寄生虫的区系组成及特点,深入研究高原隆起、西藏特殊地理环境与寄生虫之间的关系累积了资料。

关键词：羊卓雍错高原裸鲤寄生蠕虫种群生态宿主频次分布空间动态分布类型西藏

西藏巴松错浮游植物功能群垂直分布特征及其与环境因子的关系

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

湖泊科学 2021年第1期33卷 86-101页

作者：安瑞志潘成梅塔巴拉珍杨欣兰巴桑西藏大学理学院青藏高原湿地与流域生态实验室拉萨850000 西藏自治区昌都市卡若区约巴乡乃通村教学点昌都854000 西藏农牧科学院水产科学研究所拉萨850032

为了解青藏高原湖泊浮游植物功能群垂直分布特征与环境因子的关系,本文选取西藏东南部最大的高山冰川堰塞湖之一的巴松错为研究对象,于2017年11月(枯水期)和2018年9月(丰水期)在湖心利用挂锤式深水采样器进行浮游植物垂直分层采样,共设... 详细信息

为了解青藏高原湖泊浮游植物功能群垂直分布特征与环境因子的关系,本文选取西藏东南部最大的高山冰川堰塞湖之一的巴松错为研究对象,于2017年11月(枯水期)和2018年9月(丰水期)在湖心利用挂锤式深水采样器进行浮游植物垂直分层采样,共设置7个断面,采集水样84个.应用浮游植物功能群、相关性分析、冗余分析(RDA)等方法,对巴松错浮游植物功能群垂直分布特征及其与环境因子的关系进行了研究.结果表明:1)巴松错水体稳定性强,水温有明显的分层现象,枯水期在30~60 m处形成温跃层,丰水期在1~15 m和30~60 m处形成双温跃层;2)巴松错浮游植物群落共鉴定7门76属242种,物种组成均表现为硅藻蓝藻绿藻型结构;3)根据浮游植物功能群分类方法,可划分为25个功能群,分别为A、B、C、D、E、F、G、H1、H2、J、L M、L O、M、MP、N、P、S1、S2、T、W1、W2、X1、X2、X3和Y,优势功能群从枯水期的MP、D、L O、P转变为丰水期的D、F、L O、MP、N、P,其中MP功能群为巴松错浮游植物群落绝对优势群;4)通过RDA表明,不同水情期浮游植物功能群垂直分布特征受环境因子影响差异较明显,整体上,pH、总氮和氨氮浓度是影响浮游植物功能群分布格局的主要环境因子.

关键词：巴松措浮游植物功能群环境因子垂直分布

脑内表达的CYP450基因参与内源性物质代谢研究进展

在线全文

学校读者我要写书评

暂无评论

中国比较医学杂志 2018年第1期28卷 113-117页

作者：杨辛兰吕丹张连峰中国医学科学院医学实验动物研究所北京协和医学院比较医学中心卫计委人类疾病比较医学重点实验室北京100021

细胞色素P450(cytochrome P450,CYP450)为一类亚铁血红素蛋白超家族,其参与多种内源性及外源性物质(食物成分、药物及污染物等)的代谢与活化。关于CYP450基因,以往的研究主要集中在药物代谢方面,近年来的研究发现CYP450家族成员的作用... 详细信息

细胞色素P450(cytochrome P450,CYP450)为一类亚铁血红素蛋白超家族,其参与多种内源性及外源性物质(食物成分、药物及污染物等)的代谢与活化。关于CYP450基因,以往的研究主要集中在药物代谢方面,近年来的研究发现CYP450家族成员的作用不仅仅局限于药物代谢,还参与多种疾病的发生及发展进程,包括帕金森病(Parkinson’s disease,PD)、癌症、心肌病及心衰等。目前,关于脑组织内CYP450家族成员参与内源物质代谢的过程及机制尚不十分清楚。本文特总结了脑内表达的CYP450基因对机体内源物质代谢的研究进展,以期为探索脑内表达的CYP450基因的作用提供新的思路。

关键词：脑组织细胞色素P450 内源物质代谢