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chinese Science Bulletin 1999年第7期44卷 577-582页

作者： sun qigao, chen liqun and li chengseninstitute of botany, chinese academy of sciences, Beijing 100093.{3., Institute of botany Chinese Academy of Sciences Beijiing China

A novel and multi-disciplinary subject involving the relationships between changes in atmospheric CO2 concentration throughout the geological history and features of plant anatomy is reviewed. Particular attention will be given to stomatal parameters （stomatal density and stomatal index） which are recorded at a cellular level in fossil plants and the relationships of these observable parameters to earth life history and global environmental change. Trends of atmospheric CO2 concentrations during the Phanerozoic period are briefly introduced and recent conceptual advances in understanding the causal mechanisms for changes in stomatal parameters of land vascular plants are considered, In addition, some of the inherent problems and limitations of this kind of work are discussed and future research directions are presented.

关键词： Phanerozoic atmospheric CO2 concentrations vascular plants stomatal parameters.

The UDP-glycosyltransferase OsUGT706D2 positively regulates cold and submergence stress tolerance in rice

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The Crop Journal 2024年第3期12卷 732-742页

作者： Qing liu Lanlan Zhang Shuwei Lyu Hang Yu Wenjie Huang liqun Jiang Jing Zhang Bingrui sun Xingxue Mao Pingli chen Junlian Xing Wenfeng chen Zhilan Fan Shijuan Yan chen li Guangdong Key Laboratory of New Technology in Rice Breeding/Guangdong Rice Engineering Laboratory/Key Laboratory of Genetics and Breeding of High Quality Rice in Southern china(Co-construction by Ministry and Province) Ministry of Agriculture and Rural AffairsRice Research InstituteGuangdong Academy of Agricultural SciencesGuangzhou 510640GuangdongChina Guangdong Key Laboratory for Crop Germplasm Resources Preservation and Utilization Agro-biological Gene Research CenterGuangdong Academy of Agricultural SciencesGuangzhou 510640GuangdongChina

In a genome-wide association study,we identified a rice UDP-glycosyltransferase gene,OsUGT706D2,whose transcription was activated in response to cold and submergence stress and to exogenous abscisic acid(ABA).OsUGT706D2 positively regulated the biosynthesis of tricin-4’-O-(syringyl alcohol)ether-7-O-glucoside at both the transcriptional and metabolic ***706D2 mediated cold and submergence tolerance by modulating the expression of stress-responsive genes as well as the abscisic acid(ABA)signaling *** of function of OsUGT706D2 increased cold and submergence tolerance and loss of function of OsUGT706D2 reduced cold *** positively regulated OsUGT706D2-mediated cold tolerance but reduced submergence *** findings suggest the potential use of OsUGT706D2 for improving abiotic stress tolerance in rice.

关键词： UDP-glycosyltransferase Rice Cold tolerance Submergence tolerance ABA

A review of electrospun separators for lithium-based batteries: Progress and application prospects

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Carbon Energy 2024年第9期6卷 109-155页

作者： Xiangru sun Ying Zhou Dejun li Kai Zhao liqun Wang Peiran Tan Hongyang Dong Yueming Wang Ji liang College of Chemistry Tianjin Normal UniversityTianjinChina Tianjin International Joint Research Centre of Surface Technology for Energy Storage Materials College of Physics and Materials ScienceTianjin Normal UniversityTianjinChina Power Battery and System Research Center Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalianChina Dagong Equipment Manufacturing(Tianjin)Co.Ltd. TianjinChina Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education School of Materials Science and EngineeringTianjin UniversityTianjinChina

Due to the limitations of the raw materials and processes involved,polyolefin separators used in commercial lithium-ion batteries(liBs)have gradually failed to meet the increasing requirements of high-end batteries in terms of energy density,power density,and ***,it is very important to develop next-generation separators for advanced lithium(li)-based recharge-able batteries including liBs and li-S *** nanofiber membranes fabricated via electrospinning technology are highly attractive candidates for high-end separators due to their simple processes,low-cost equipment,controllable microporous structure,wide material applicability,and availability of multiple *** this review,the electrospinning technologies for separators are reviewed in terms of devices,process and environment,and polymer solution ***,strategies toward the improvement of electrospun separators in advanced liBs and li-S batteries are presented in terms of the compositions and the structure of nanofibers and ***,the challenges and prospects of electrospun separators in both academia and industry are *** anticipate that these systematic discussions can provide information in terms of commercial applications of electrospun separators and offer new perspectives for the design of functional electrospun separators for advanced li-based batteries.

关键词： electrospinning li-metal batteries li-S batteries lithium-ion batteries separator

Preliminary Results of the Seismicity Monitoring Experiment around the 2019 Mw5.4 Earthquake Epicenter in the Central South china Sea Basin

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Journal of Earth Science 2024年第1期35卷 212-220页

作者： Wenfei Gong Aiguo Ruan Xiongwei Niu Zhenjie Wang Pingchuan Tan Xiaodong Wei Wei Wang Zhengyi Tong liqun cheng Fansheng Kong Shaoping Lu Jianke Fan Weiwei Ding Jinyao Gao Chunguo Yang Jiabiao li School of Oceanography Shanghai Jiaotong UniversityShanghai 200240China Key Laboratory of submarine Geosciences Second Institute of OceanographyMinistry of Natural ResourcesHangzhou 310012China Zhejiang Earthquake Administration Hangzhou 310013China School of Earth sciences Zhejiang UniversityHangzhou 310027China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai 519082China School of Earth sciences and Engineering Sun Yat-sen UniversityZhuhai 519082China Institute of Oceanology Chinese Academy of SciencesQingdao 266071China

On September 5,2019,a moderate earthquake of Mw5.4 unexpectedly occurred in the apparently quiescent central basin of the South china *** immediately carried out a seismicity monitoring experiment around the epicenter by using broadband ocean bottom seismometers(OBS)for the following three scientific *** first is knowing the earthquake seismogenic mechanism,fault structure and further *** second is finding the role of the residual spreading ridge playing in earthquake processes and further revealing the deep structures of the ridge directional turning *** third is confirming the existence and significance of the so called“Zhongnan fault”.This paper reports the preliminary results of the first phase *** OBSs were deployed for seismicity monitoring with a duration of 288 days,but only three were ***-earthquakes were firstly detected by an automatic seismic phase picking algorithm and then were verified by analyzing their seismic phases and time-frequency characteristics in detail.A total of 21,68 and 89 microearthquakes were picked out from the three OBSs respectively within the distance of 3. *** dominant frequency of these micro-earthquakes is 12-15 Hz,indicating tectonic *** the first two months after the mainshock the seismicity was relatively stronger,and micro-earthquakes were still occurring occasionally till the end of observation,indicating the epicenter area is *** used Match&Locate method to locate 57 micro-earthquakes *** spatial distribution shows that the seismicity is developed mainly along the NE direction roughly parallel to the residual ridge with depth variations between 10-20 km.

关键词： South china Sea microseismic monitoring earthquakes fault broadband OBS

Measurement of the neutron total cross section of^(9)Be at the Back-n white neutron source of CSNS

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chinese Physics C 2024年第8期48卷 140-152页

作者： Jiangbo Bai Jingyu Tang liqun Shi Yonghao chen Han Yi Jie Bao Yu Bao Ping Cao Haolei chen Zhen chen Zengqi Cui Ruirui Fan Changqing Feng Keqing Gao Xiaolong Gao MinHao Gu Changcai Han Guozhu He Yongcheng He Yang Hong Yiwei Hu Hanxiong Huang Xiru Huang Haoyu Jiang Wei Jiang Zhijie Jiang Hantao Jing ling Kang Bo li Chao li Jiawen li Qiang li Xiao li Yang li Jie liu Shubin liu Ze Long Guangyuan Luan Changjun Ning Mengchen Niu Binbin Qi Jie Ren Xichao Ruan Zhaohui Song Kang sun Zhijia sun Zhixin Tan Xinyi Tang Binbin Tian lijiao Wang Pengcheng Wang Zhaohui Wang Xiaoguang Wu Xuan Wu likun Xie Xiaoyun Yang li Yu Tao Yu Yongji Yu Guohui Zhang linhao Zhang Qiwei Zhang Xianpeng Zhang Yuliang Zhang Zhiyong Zhang Luping Zhou Zhihao Zhou Kejun Zhu Institute of Modern Physics Fudan UniversityShanghai 200433China School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230026China Sate Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China Institute of High Energy Physics Chinese Academy of Sciences(CAS)Beijing 100049China Spallation Neutron Source Science Center Dongguan 523803China Key Laboratory of Nuclear Data China Institute of Atomic EnergyBeijing 102413China Department of Modern Physics University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Nuclear Physics and Technology School of PhysicsPeking UniversityBeijing 100871China State Key Laboratory of Particle Detection and Electronics Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Northwest Institute of Nuclear Technology Xi’an 710024China University of chinese academy of sciences Beijing 100049China

The neutron total cross section data of^(9)Be are essential in the nuclear structure model research of light nuclei and nuclear power *** neutron total cross section of^(9)Be in the 0.3.eV−120 MeV energy region has been measured using time-of-flight and transmission methods with the Neutron Total Cross Sectional Spectrometer(NTOX)based on the multi-cell fast fission chamber at the china Spallation Neutron Source(CSNS)-Back-n white neutron source(Back-n).The fission count-neutron energy distributions of ^(23.)U and ^(23.)U without samples and with Be samples with three thicknesses were measured in the double-bunch operation mode for a beam power of 100 *** Bayesian method was used to eliminate the influence of the double-bunch problem on neutron measurement in the energy region above 10 *** neutron total cross section of^(9)Be results was consistent with ENDF/B-VIII.0 evaluation library data in the 0.3.eV−20 MeV energy *** the energy ranges of 0.3.eV to 10 keV and 0.01 to 20 MeV,the deviations between our results and the evaluation results of ENDF/B-VIII.0 were within 2.5%and 15%,*** the resonance energy region,the measured resonance energies in our experiment were 0.63.0.82,and 2.8 MeV,*** results showed that the total cross section uncertainties of three Be samples were within 2.2%in the energy region below 1 *** total cross section uncertainty of 3. mm Be from ^(23.)U was the smallest and less than 5%in the energy region of 0.3.eV−120 *** results of this experiment can provide technical support for further data analysis and related nuclear data evaluation.

关键词： ^(9)Be neutron total cross section CSNS Back-n time-of-flight method transmission method multi-cell fast fission chamber

水稻淹水萌发对低氧胁迫的适应及其机制研究进展

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植物遗传资源学报 2024年第1期25卷 13-20页

作者：张静孙炳蕊毛兴学江立群吕树伟陈文丰范芝兰于航陈平丽刘清李晨广东省农业科学院水稻研究所/广东省水稻育种新技术重点实验室/广东省水稻工程实验室/农业农村部华南优质稻遗传育种实验室(部省共建) 广州510640

水稻是我国最重要的粮食作物之一,水稻生产是国家粮食安全的重要保障。传统移栽种植模式对我国的水稻增产、农民增收、农业发展起到了重要作用。但随着社会经济发展和产业要素变革,农村劳动力大幅减少,迫切需求轻简化的生产方式。水稻...

水稻是我国最重要的粮食作物之一,水稻生产是国家粮食安全的重要保障。传统移栽种植模式对我国的水稻增产、农民增收、农业发展起到了重要作用。但随着社会经济发展和产业要素变革,农村劳动力大幅减少,迫切需求轻简化的生产方式。水稻淹水直播能节省劳力、节约资源、有效降低杂草危害,是一种高效、经济和节约型的轻简栽培模式,在当前有较高的推广价值。淹水萌发时低氧胁迫造成的出苗率低是阻碍水稻淹水直播的首要因素,丰富的水稻种质资源中存在耐淹水萌发优异资源和基因,挖掘和利用这些优异资源和基因并培育适宜淹水直播的水稻新品种,是突破目前直播稻推广和应用瓶颈的关键。本文围绕水稻淹水萌发的生理特点、鉴定评价方法、优异种质鉴定、遗传规律、响应机制研究以及功能基因的育种应用等方面的研究进展进行综述,以期为水稻耐淹水萌发的机制研究和萌发耐淹品种的选育提供参考。

关键词：水稻淹水直播低氧胁迫种子萌发轻简栽培

非粮生物质糖平台合成5-羟甲基糠醛的研究进展

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林业工程学报 2024年第3期9卷 10-21页

作者：李明富张平军胡双岚莫柳珍孙潇黄俊生蒋丽群广东省科学院生物与医学工程研究所广州510316 广东省绿色制糖工程技术研究中心广州510316 广东省生物质高值化利用工程实验室广州510316

非粮生物质作为一种可再生的能源资源,其净二氧化碳排放为零,被认为是生产液体燃料、生物基化学品和聚合物最有前途的替代品之一。随着可再生能源需求的不断增加,促进了绿色合成生物基化学品的不断发展。5-羟甲基糠醛(HMF)作为一种重要...

非粮生物质作为一种可再生的能源资源,其净二氧化碳排放为零,被认为是生产液体燃料、生物基化学品和聚合物最有前途的替代品之一。随着可再生能源需求的不断增加,促进了绿色合成生物基化学品的不断发展。5-羟甲基糠醛(HMF)作为一种重要的生物基平台化学品,可广泛应用于合成乙酰丙酸、2,5-呋喃二羧酸、2,5-二甲酰呋喃、2,5-双(羟甲基)-呋喃和5-羟甲基-2-呋喃胺等多种化学品,其可用于精细化工、医药中间体合成、生物可降解材料和液体燃料等领域。目前,HMF的工业生产主要是通过果糖脱除3.子水来实现的,而果糖价格高及HMF的分离效率差,导致HMF的生产成本较高,因此亟须拓展糖源和提高HMF的分离效率。非粮生物质糖平台包含葡萄糖、蔗糖、纤维素、菊粉和琼脂糖等,利用这些糖制备HMF已有广泛研究,有望在未来替代果糖。笔者从非粮生物质衍生糖平台角度出发,综述了近年来合成生物基HMF的研究及应用现状,重点介绍了均相和非均相体系催化不同糖原料合成HMF性能及机制,对比液体酸/盐及固体酸催化糖原料的差异性,分析了不同合成工艺的工业化应用前景,旨在探讨非粮生物质衍生糖平台合成HMF的应用潜力和价值,并为降低HMF及衍生化合物制备成本、合成生物基呋喃化学品的进一步发展提供理论借鉴。

关键词：非粮生物质 5-羟甲基糠醛催化剂反应可持续性

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Genome evolution trend of common carp (Cyprinus carpio L.) as revealed by the analysis of microsatellite loci in a gynogentic family

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Journal of Genetics and Genomics 2008年第2期35卷 97-103页

作者： Yah Zhang liqun liang Peng Jiang Dayu li Cuiyun Lu Xiaowen {3. Heilongjiang River Fisheries Research Institute Chinese Academy of Fisheries Sciences Harbin 150070 China College of Aqua-life Science and Technology Shanghai Fisheries University Shanghai 200090 China life Science and Technology Institute Dalian Fisheries University Dalian 116023 China

Genome evolution arises from two main ways of duplication and reduction. Fish specific genome duplication （FSGD） may have occurred before the radiation of the teleosts. Common carp （Cyprinus carpio L.） has been considered to be a tetraploid species, because of its chromosome numbers （2n=100） and its high DNA content. Using 69 microsatellite primer pairs, the variations were studied to better understand the genome evolution （genome duplication and diploidization） of common carp from a gynogenetic family. About 48% of primer pairs were estimated to amplify duplicates based on the number of PCR amplification per individual. Segregation patterns in the family suggested a partially duplicated genome structure and disomic inheritance. This indicates that the common carp is tetraploid and polyploidy occurred by allotetraploidy. Two primer pairs （HLJ021 and HLJ3.2） were estimated to amplify reduction based on the number of PCR amplification per individual. One allele in HLJ002 locus and HLJ3.2 locus was clearly lost in the gynogenetic family and the same as in six wild populations. Segregation patterns in the family suggested a partially diplodization genome structure. A hypothesis transition （dynamic） and equilibrium （static） were proposed to explain the common carp genome evolution between genome duplication and diploidization.

关键词： common carp genome duplication genome diploidization

Heterogeneous synergistic catalysis by Ru-RuOx nanoparticles for Se-Se bond activation

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Nano Research 2017年第3期10卷 922-932页

作者： Mu lin liqun Kang Jun Gu linxiu Dai Shengbo Tang Tao Zhang YuhaoWang lindong li Xiaoyu Zheng Wei Zhu Rui Si Xuefeng Fu lingdong sun Yawen Zhang Chunhua Yan Beijing National Laboratory for Molecular sciences State Key Laboratory of Rare Earth Materials Chemistry and Applications PKU-HKU Joint Laboratory in Rare Earth Materials and 8ioinorganic Chemistry College of Chemistry and Molecular Engineering Peking University 8eijing 100871 China Shanghai Synchrotron Radiation Facility Shanghai Institute of Applied Physics Chinese Academy of Sciences Shanghai 201204 China

The transition from homogeneous to heterogeneous synthetic chemistry enabled by nanocatalysts necessitates investigations of the reaction mechanism and structure-activity relationships for inorganic nanoparticles and organic substrates. Herein, we report that hydrothermally synthesized ruthenium nano- particles performed differently in the Se--Se bond activation and selenylation of heterocydes, exhibiting a volcano-shaped relationship between catalytic activity and composition. A synergistic effect was observed for Ru-RuOx nanocatalysts, with numerous characterizations and density functional theory （DFT） calculations suggesting that a PhSeSePh molecule can initially be adsorbed on the metallic Ru sites and cleaved into two PhSe＊ species, which subsequently migrate to RuOx sites and react with the nucleophile to achieve the selenylation of heterocycles~

关键词： nanoparticle ruthenium selenium heterogeneous catalysis synergistic effect

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欧盟碳关税落地对中欧贸易的影响及应对策略

集成技术 2024年第1期13卷 30-43页

作者：周桃周婵李许尹航张文勇蒋锐曾瑜冯威孙立群中国科学院深圳先进技术研究院碳中和技术研究所深圳518055 中国科学院深圳先进技术研究院深圳市碳中和能源材料重点实验室深圳518055 深圳海关工业品检测技术中心深圳518067 深圳理工大学(筹)材料科学与能源工程学院深圳518055

2023.5月16日,欧盟宣布将碳边境调节机制(Carbon Border Adjustment Mechanism,CBAM)法案文本在《欧盟官方公报》上正式发布,并于次日(2023.5月17日)正式生效,这是全球首个碳关税机制。欧盟是中国第二大贸易伙伴和第二大出口市场,欧... 详细信息

2023.5月16日,欧盟宣布将碳边境调节机制(Carbon Border Adjustment Mechanism,CBAM)法案文本在《欧盟官方公报》上正式发布,并于次日(2023.5月17日)正式生效,这是全球首个碳关税机制。欧盟是中国第二大贸易伙伴和第二大出口市场,欧盟开征碳关税必将对中国的对欧出口贸易和经济发展造成较大影响。该文对欧盟CBAM的发展历程、最新动态、具体内容和征收方法做了详细介绍,并在此基础上,依据中国海关进出口统计数据,分析了CBAM对中欧贸易的影响。目前,受影响较大的行业主要是钢铁和铝,但是未来,欧盟还将对CBAM进行重新评估,以确定是否扩大征收范围。中国应积极采取各种应对策略,以维护外贸企业的合法权益。

关键词：欧盟碳关税碳边境调节机制国际贸易碳中和