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Research 2023年第4期2023卷 181-194页

作者： Yuhan Lou Xinyue Sun Yanyan Yu suqing zeng Yilin Li Yongzhuang Liu Haipeng Yu Key Laboratory of Bio-Based Material Science and Technology of Ministry of Education Northeast Forestry UniversityHarbin 150040P.R.China

Protolignin extraction can facilitate structure elucidation and valorization of lignin in biorefinery,but is rather challenging due to the complex chemical bonds ***,we developed the in situ generated NH3-reline(IGNR)system to realize one-pot protolignin extraction from *** the IGNR system,reline consisting of choline chloride and urea acted as both a solvent and a nucleophile generator,and the nucleophilic addition-elimination mechanism was verified by model compound *** in situ generated NH3 could precisely cleave the lignin-carbohydrate esters in lignocellulose with a near-quantitative retention of *** extracted IGNR-Protolignin exhibited native lignin substructure with high molecular weight and highβ-O-4′content(41.5 per 100 aromatic units).In addition,the up-scaled kilogram reaction demonstrated the feasibility of the IGNR system for potential industrial application in a green and sustainable *** work represents a breakthrough toward protolignin extraction in practice with the future goal of achieving total biorefinery.

关键词： lignin system bonds

Cellulose-based functional gels and applications in flexible supercapacitors

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Resources Chemicals and Materials 2023年第2期2卷 177-188页

作者： Xiuzhi Zhu Geyuan Jiang Gang Wang Ying Zhu Wanke Cheng suqing zeng Jianhong Zhou Guangwen Xu Dawei Zhao Key Laboratory on Resources Chemicals and Materials of Ministry of Education Shenyang University of Chemical TechnologyShenyang 110142PR China Key Laboratory of Pulp and Paper Science&Technology of Ministry of Education Qilu University of Technology(Shandong Academy of Sciences)Jinan 250353PR China Key Laboratory of Bio-based Material Science and Technology of Ministry of Education Northeast Forestry UniversityHarbin 150040PR China

In order to resolve the global crisis of fossil energy shortage and climate warming,the development of efficient energy storage devices is a significant topic at *** as the novel type of energy storage devices have the unique advantages,including the fast charging/discharging behaviors,high-energy/power density,and stable cycling *** with traditional supercapacitors,flexible supercapacitors are environmen-tally friendly,light weight,small size and high ***,flexible supercapacitors have a wide application prospect in emerging electronic *** to its flexibility,biocompatibility,and structure designability,cellu-lose and its gel materials are gradually used as electrodes,separators and electrolytes in flexible *** construction processes at molecular scale for high-performance cellulose gels are ***,this review covers the recent progress of developing the flexible supercapacitors and all-in-one supercapacitors based on cellulose functional *** finally discussed the potential challenges and opportunities for cellulose and its derived materials in new-style flexible supercapacitors and other electronic devices.

关键词： Cellulose Functional design Gel materials Flexible supercapacitors

Flexible Nanopaper Composed of Wood-Derived Nanofibrillated Cellulose and Graphene Building Blocks

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Journal of Renewable Materials 2021年第3期9卷 451-461页

作者： Qing Li Ming Dai Xueren Qian Tian Liu Zhenbo Liu Yu Liu Ming Chen Wang He suqing zeng Yu Meng Chenchen Dai Jing Shen Yingtao Liu Wenshuai Chen Wenbo Liu Ping Lu College of Material Science and Engineering Northeast Forestry UniversityHarbin150040China Department of Chemistry and Biochemistry Rowan UniversityGlassboroNJ08028USA

Nanopaper has attracted considerable interest in the fields of films and paper ***,the challenge of integrating the many advantages of nanopaper still ***,we developed a facile strategy to fabricate multifunctional nanocomposite paper(NGCP)composed of wood-derived nanofibrillated cellulose(NFC)and graphene as building *** suspension was consisted of long and entangled NFCs(10–30 nm in width)and their *** NGCP formation,NFC was chemically modified with a silane coupling agent to ensure that it could interact strongly with graphene in *** resulting NGCP samples were flexible and could be bent repeatedly without any structural *** the NGCP samples,the high aspect ratio of NFC made a major contribution to its high mechanical strength,whereas the sheet-like graphene endowed the NGCP with electrical resistance and electrochemical *** mechanical strength of the NGCP samples decreased as their graphene content ***,the electrical resistance and electrochemical activity of the NGCP samples both rose with increasing content of *** NGCPs still kept advantageous mechanical properties even at high temperatures around 300℃ because of the high thermal stability of NFCs and their strong entangled web-like *** view of its sustainable building blocks and multifunctional characteristics,the NGCP developed in this work is promising as low-cost and high-performance nanopaper.

关键词： Nanofibrillated cellulose graphene flexible nanopaper mechanical strength electrical resistance

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组合预测结果的优化

河北工学院学报 1989年第1期18卷 54-60页

作者：谢素卿曾珍香

本文对组合预测法的概念及其权值的确定进行了探讨,提出了带约束的组合预测法优越性的理论依据.

关键词：组合预测法预测效果预测

上海市长宁区2007—2016年户籍人口肺结核流行特征

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中国热带医学 2018年第6期18卷 584-587页

作者：张霞曾素清黄颖上海市长宁区疾病预防控制中心上海200051

目的了解上海市长宁区2007—2016年户籍人口肺结核病流行特征,为制定针对性防控策略提供依据。方法运用描述性流行病学方法对长宁区2007—2016年户籍人口肺结核疫情数据进行统计分析。结果 2007—2016年长宁区登记户籍人口肺结核患者1 ... 详细信息

目的了解上海市长宁区2007—2016年户籍人口肺结核病流行特征,为制定针对性防控策略提供依据。方法运用描述性流行病学方法对长宁区2007—2016年户籍人口肺结核疫情数据进行统计分析。结果 2007—2016年长宁区登记户籍人口肺结核患者1 085例,其中涂阳患者517例,年均肺结核登记率17.82/10万。2007—2016年长宁区户籍人口肺结核登记率从22.57/10万下降到14.23/10万,年递降率为4.50%,登记率呈下降的趋势(P<0.05)。登记的肺结核患者中男性和女性年均登记率分别为25.06/10万和10.71/10万,男女性别比为2.30∶1,两者之间差异有统计学意义(P<0.001)。报告患者人数8月份最高,12月至次年2月患者总数最低。患者主要集中在15岁及以上年龄段,占总患者数的99.72%;85岁及以上年龄组登记率最高,为40.51/10万。离退人员在所有登记发病人群中患者数最多。结论长宁区户籍人口肺结核登记率总体呈稳步下降趋势,男性、老年、离退人员、夏季等是长宁区肺结核高发因素,应加强对相应人群或因素的预防控制措施。。

关键词：结核,肺户籍人口流行病学

Study of the primordial lithium abundance

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Science China(Physics,Mechanics & Astronomy) 2011年第S1期54卷 67-72页

作者： LI ZhiHong1, LI ErTao1, SU Jun1, LI YunJu1, BAI XiXiang1, GUO Bing1, WANG YouBao1, CHEN YongShou1, HOU suqing1, zeng Sheng1, LIAN Gang1, SHI JianRong2 & LIU WeiPing1 1 China Institute of Atomic Energy, Beijing 102413, China 2National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China China Inst Atom Energy Beijing 102413 Peoples R China Chinese Acad Sci Natl Astron Observ Beijing 100012 Peoples R China

Lithium isotopes have attracted an intense interest because the abundance of both 6Li and 6Li from big bang nucleosynthesis (BBN) is one of the puzzles in nuclear astrophysics. Many investigations of both astrophysical observation and nucleosynthesis calculation have been carried out to solve the puzzle, but it is not solved yet. Several nuclear reactions involving lithium have been indirectly measured at China Institute of Atomic Energy, Beijing. The Standard BBN (SBBN) network calculations are then performed to investigate the primordial Lithium abundance. The result shows that these nuclear reactions have minimal effect on the SBBN abundances of 6Li and 7Li.

关键词： big bang nucleosynthesis element abundance nuclear reaction network

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270例胎儿脐血流与新生儿体重相关性分析

中国当代医药 2010年第19期17卷 232-233页

作者：曾素清许波戴哲凡广东省惠州市中心人民医院产科广东惠州516001

目的:探讨胎儿脐血流与新生儿体重的关系。方法:通过脐血流监测了解270例孕妇的胎儿脐动脉收缩期血流速度最大值(S)与舒张期血流速度最低值(D)的比值(S/D),并进行随访观察,以了解其与新生儿体重的关系,了解其预测胎儿宫内生长受限(fetal... 详细信息

目的:探讨胎儿脐血流与新生儿体重的关系。方法:通过脐血流监测了解270例孕妇的胎儿脐动脉收缩期血流速度最大值(S)与舒张期血流速度最低值(D)的比值(S/D),并进行随访观察,以了解其与新生儿体重的关系,了解其预测胎儿宫内生长受限(fetalgrowthrestriction,FGR)及巨大儿的价值。结果:FGR组的脐动脉S/D值明显高于正常组(P<0.001),巨大儿组脐动脉S/D值明显低于FGR组(P<0.001)。结论:脐动脉S/D值可反映胎儿生长情况,可用于预测FGR和巨大儿。

关键词：脐动脉血流速度胎儿体重

2009—2019年上海市长宁区病毒性肝炎流行病学特征及发病趋势分析

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公共卫生与预防医学 2023年第6期34卷 80-84页

作者：顾佳玲高慧沈一真夏庆华张霞曾素清上海市长宁区疾病预防控制中心上海200051 上海市奉贤区奉城医院上海201411

目的研究分析上海市长宁区2009—2019年病毒性肝炎流行病学特征及发病趋势,为病毒性肝炎的防控提供科学指导。方法收集2009—2019年长宁区病毒性肝炎数据,采用描述型流行病学方法对上海市长宁区病毒性肝炎的流行病学特征进行分析;采用Jo... 详细信息

目的研究分析上海市长宁区2009—2019年病毒性肝炎流行病学特征及发病趋势,为病毒性肝炎的防控提供科学指导。方法收集2009—2019年长宁区病毒性肝炎数据,采用描述型流行病学方法对上海市长宁区病毒性肝炎的流行病学特征进行分析;采用Joinpoint软件计算病毒性肝炎发病率的年度变化百分比和平均年度变化百分比,并进行趋势检验。结果2009—2019年长宁区共报告病毒性肝炎3397例,年均发病率49.32/10万。Joinpoint趋势检验结果表明,从型别上看,上升趋势主要是甲肝、乙肝的发病率升高所致。结论长宁区病毒性肝炎年均发病率远低于全国平均水平,但2009—2019年病毒性肝炎发病率总体呈现上升趋势,上海市长宁区病毒性肝炎防控形势依然严峻,乙肝仍是今后病毒性肝炎的防治重点。

关键词：病毒性肝炎发病率 Joinpoint回归趋势

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产后出血的临床原因分析

内蒙古中医药 2010年第12期29卷 69-69页

作者：曾素清陈玉莲广东省惠州市中心人民医院 516001

目的:分析产后出血的影响因素,提出合理的防治措施,降低孕产妇的死亡率。方法:对本院2007年1月～2009年12月发生的产后出血病例进行回顾性分析。结果:在1876例产妇中,发生产后出血者43例,发生率为229%,导致产后出血主要的原因依次为子... 详细信息

目的:分析产后出血的影响因素,提出合理的防治措施,降低孕产妇的死亡率。方法:对本院2007年1月～2009年12月发生的产后出血病例进行回顾性分析。结果:在1876例产妇中,发生产后出血者43例,发生率为229%,导致产后出血主要的原因依次为子宫收缩乏力、胎盘因素、软产道损伤等。结论:产后出血是产科常见并发症,受多种因素影响,采取相应的预防措施,可减少产后出血。

关键词：产后出血影响因素防治措施

Review of CHINARE chemical oceanographic research in the Southern Ocean during 1984–2016

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Advances in Polar Science 2017年第2期28卷 139-150页

作者： CHEN Liqi CHEN Min ZHAN Liyan QI Di GAO Zhongyong WANG Jianjun XU suqing CHEN Kui zeng Jian ZHANG Run Key Laboratory of Global Change and Marine-Atmospheric Chemistry of State Oceanic Administration (SOA) Third Institute of Oceanography SOA College of Ocean and Earth Sciences Xiamen University

Between 1984 and 2016, China executed 33 Antarctic cruises with the icebreaker R/V Xuelong, which have provided opportunities for Chinese scientists to investigate the status and changes of the Southern Ocean. Research in chemical oceanography constitutes one of the primary missions of the Chinese National Antarctic Research Expedition （CH1NARE）. This paper reviews nearly 30 years of Chinese Antarctic expeditions, focusing on the major progress achieved in chemical oceanographic research. Specifically, the sea-surface distributions and air-sea fluxes of CO2 and N20 are considered, and the transport, flux, and budget of organic matter are investigated based on isotopes in the Southern Ocean, especially in Prydz Bay. In addition, the nutrient distribution and deep-water particle export in Prydz Bay and the study of aerosol heavy metal characteristics are considered. Finally, the prospects for future Chinese Antarctic chemical oceanographic research are outlined.

关键词： chemical oceanography Southern Ocean CHINARE Prydz Bay