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Reducing structural degradation of high-voltage single-crystal Ni-rich cathode through in situ doping strategy

Rare Metals 2023年第9期42卷 2993-3003页

作者： Xin-Ming Fan Zhi Zhang Gao-Qiang Mao Ying-jie Tong Ke-Bo Lin hui Tong Wei-F{2.g Wei Qing-hua Tian Xue-Yi Guo Powder Metallurgy Research institute Central South UniversityChangsha410083China School of Metallurgy and environment Central South UniversityChangsha410083China National&Regional Joint engineering Research Center of Nonferrous Metal Resource Recycling Changsha410083China engineering Research Center of the Ministry of Education for Advanced Battery Materials Central South UniversityChangsha410083China College of Chemistry and Materials engineering Hunan University of Arts and ScienceChangde415000China

Polycrystalline Ni-rich layered oxide (Li Ni_(x)Co_(y)Mn_zO_(2.(NCM),x>0.8) cathode material with high specific capacity and low cost is considered as one of the most promising candidate materials for lithium-ion batteries (LIBs).However,it suffers from severe structural and capacity degradation during practical cycling,especially under harsh operation condition(ultrahigh cutoff voltage and elevated temperature,etc.).One promising approach to mitigate these issues is to develop a single-crystal Ni-rich NCM cathode,which could enhance structural integrity and improve capacity retention,due to its robust and stable micro-sized primary ***,the improved cyclic stability comes at the expense of reversible capacity and rate capability,owing to the relatively low Li^(+) diffusion efficiency for its micron-sized primary ***,the structural degradation and exacerbation of interfacial reactions for the Ni-rich NCM cathode under highvoltage (≥4.5 V) would quickly trigger the poor electrochemical performance,limiting its practical ***,Li Ni_(0.82.)Co_(0.11)Zr_(0.003)Mn_(0.06)O_(2.(Zr@SC-N_(83)) cathode material was successfully synthesized via the in situ doping *** could not only effectively maintain the reversibility of phase transition between H2.and H3 after long-term cycling at high voltage (4.6 V),but also enhance lithium-ion diffusion,thus improving the cycling performance and good rate performance for the Zr@SC-N_(83)*** a result,0.3 wt%Zrdoping cathode delivers an initial discharging capacity of 2.0.1 m Ah·g^(-1)at 1.0C and at the high cutoff voltage of 4.6 V,exhibiting the satisfactory capacity retention of 85.5%after *** provides an effective route toward low-cost and higher energy density for lithium-ion batteries with Ni-rich cathode.

关键词： Single-crystal Ni-rich LiNi_(x)Co_(y)Mn_zO_(2.(NCM) In situ doping strategy High voltage Structural integrity Cycling stability

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Development of an enzyme-linked immunosorbent assay using specific monoclonal antibodies against theacrine and its application

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Chinese Chemical Letters 2016年第12期27卷 1771-1775页

作者： Zhuang Li Jun He Yue Zhang Qing-Guo Wang Yah Zhao hui-hua Qu Xue-Qian Wang hui Kong Wei-Ku Zhang jie-Kun Xu School of Basic Medical Sciences Beijing University of Chinese Medicine Beijing 100029 China Department of Pharmacology Institute of Clinical Medical Sciences China-Japan Friendship Hospital Beijing 100029 China Department of Pharmacy China-Japan Friendship Hospital Beijing 100029 China Classical Prescription Application Foundation Research Innovation Team Beijing University of Chinese Medicine 8eijing 100029 China

Tbeacrine （1,3,7,9-tetramethyluric acid）, a purine alkaloid similar to caffeine in its chemical structure, is isolated from edible Camellia assamica vat. kucha and has various pharmacological activities including hypnotic effects, anti-depressant effects, anti-inflammatory and analgesic effects, and a protective effect against stress-provoked liver damage. A rapid and simple assay is required to quantify theacrine in biological samples for pharmacokinetic studies in small animals. This study aimed to establish an enzyme-linked immunosorbent assay （ELISA） for theacrine quantification in blood. Herein, we successfully obtained monoclonal antibodies （MAbs） against theacrine, MAbs C11B5, and developed an ELISA method for the fast determination of theacrine in mouse blood. The range for calibration of theacrine by ELISA was 0.156-100 μg mL-1. The half maximum inhibitory concentration （IC50） value was 1.55 μg mL-1. The ELISA method lays a good foundation for the further research.

关键词： Theacrine Theophylline-7-acetic acid ELISA Monoclonal antibody

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我国乳制品网络零售现状分析与发展建议

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中国食物与营养 2024年第7期30卷 50-54页

作者：朱敬慧董晓霞余泽田彭华陈自杰北京农学院北京102206 中国农业科学院农业信息研究所北京100081

目的:通过研究我国网络用户群体特征、不同品类乳制品网络零售情况,分析目前我国乳制品网络零售中的消费者选购特点,为乳制品企业提供网络零售发展建议。方法:基于整理中国互联网络发展状况统计报告、中国电子商务报告(2.13—2.2.)等互... 详细信息

目的:通过研究我国网络用户群体特征、不同品类乳制品网络零售情况,分析目前我国乳制品网络零售中的消费者选购特点,为乳制品企业提供网络零售发展建议。方法:基于整理中国互联网络发展状况统计报告、中国电子商务报告(2.13—2.2.)等互联网产业相关报告中的公开数据进行分析。结果:研究发现我国互联网普及率逐年增高,网民规模不断扩大,老年及农民工人群上网规模的占比大幅度增加;乳制品网络零售渠道相对于其他渠道增速更为明显,乳制品在农产品网络零售中的占比持续增加;乳制品各品类销售呈现不同格局。结论:乳制品网络销售额受电商节活动以及营销策略影响明显,各乳制品企业应深入挖掘自身产品优势,针对不同特点人群制定网络销售的相关营销策略,提振我国乳制品消费市场。

关键词：乳制品网络零售网民特征现状建议

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Identification and expression patterns of alcohol dehydrogenase genes involving in ester volatile biosynthesis in pear fruit

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Journal of Integrative Agriculture 2017年第8期16卷 1742-1750页

作者： QIN Gai-hua QI Xiao-xiao QI Yong-jie GAO Zh{2.g-hui YI Xing-kai PAN Hai-fa XU Yi-liu Horticultural Research institute Anhui Academy of Agricultural SciencesHefei 230031P.R.China Anhui Key Laboratory of Genetic Improvement and Ecophysiology of Horticultural Crop Hefei 230031P.R.China College of Agriculture Medicine and HealthAnhui Radio and Television UniversityHefei 230022P.R.China

Alcohol dehydrogenase （ADH） catalyzes the interconversion of aldehydes and their corresponding alcohols, and is a key enzyme in volatile ester biosynthesis. However, little is known regarding ADH and ADH encoding genes （ADHs） in pear. We identified 8 ADHs in the pear＇s genome （PbrADHs） by multiple sequences alignment. The PbrADHs were highly ho- mologous in their coding regions, while were diversiform in structure. 9 introns were predicted in PbrADH3-PbrADH8, while 8 introns, generated through exon fusion and intron loss, were predicted in PbrADH1 and PbrADH2. To study the genetic regulation underlying aroma biogenesis in pear fruit, we determined the PbrADH transcripts, ADH activities and volatile contents of fruits during ripening stage for Nanguoli and Dangshansuli, two cultivars having different aroma characteristics. ADH activity was strongly associated with the transcription of ADH~ in the two cultivars during fruit ripening stage. The higher ester content paralleling to a higher ADH activity was detected in Nanguoli than in Dangshansuli, so it is induced that the lower ester content in Dangshansuli fruit may be the result of weak ADH activity. The present study revealed that total ADH activity and volatile ester production correlated with increased PbrADHstranscript levels. PbrADH6 may contribute to ADH activity catalyzing aldehyde reduction and ester formation in pear fruit.

关键词： alcohol dehydrogenase ester volatile gene expression pear

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A New Nortriterpenoid Glycoside from Sinofranchetia chinensis

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Chinese Chemical Letters 2001年第1期12卷 55-58页

作者： Xiao hui YANG Rui Jun MA Run hua LU Xiao Ning WEI Yun Pu WANG Han Qing WANG {2. KONG Department of Biology Northwest Normal UniversityLanzhou 730070 United Laboratory ofTibetanMedicines andNaturalMedicines Lanzhou institute of Chemical Physics Chinese Academy of SciencesChee Zheng Tibetan Medicines GroupLanzhou 730000 Department of Chemistry NorthwestNormal UniversityLanzhou 730070

A new 30-nortriterpenoid glycopside, 3-O-a-L-arabinopyranosyl-30-norhederagenin 2.-O-a-L-rhamnopyranosyl(1-->4)-beta -D-glucopyranosyl (1-->6)-beta -D-glucopyranoside 1, named sinofoside A was isolated from Sinofranchetia chinensis. Its structure was elucidadated by spectra FAB-MS, 2.-NMR including H-1-H-1 COSY, H-1-C-13 COSY, TOSCY, HMBC and NOESY techniques.

关键词： Sinofranchetia chinensis nortriterpenoid glycopside sinofoside A 2.-NMR

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BenCHIP： Benchmarking Intelligence Processors

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Journal of Computer Science & Technology 2018年第1期33卷 1-23页

作者： Jin-hua Tao Zi-Dong Du Qi Guo hui-Ying Lan Lei Zhang Sh{2.g-Yuan Zhou Ling-jie Xu Cong Liu Hai-F{2.g Liu Shah Tang All{2. Rush Willian Ch{2. Shao-Li Liu Yun-Ji Ch{2. Tian-shi Ch{2. State Key Laboratory of Computer Architecture Institute of Computing Technology Chinese Academy of Sciences Beijing 100190 China School of Computer and Control engineering University of Chinese Academy of Sciences Beijing 100049 China Intelligent Processor Research Center Institute of Computing Technology Chinese Academy of Sciences Beijing 100190 China Cambricon Ltd. Beijing 100190 China A libaba Infrastructure Service A libaba Group Hangzhou 311121 China Iflytek Co. Ltd. Hefei 230088 China Beijing Jingdong Century Trading Co. Ltd. Beijing 100176 China RDA Microdectronics Inc. Shanghai 201203 China Advanced Micro Devices Inc. Sunnyvale CA 94085 U.S.A.

The increasing attention on deep learning has tremendously spurred the design of intelligence processing hardware. The variety of emerging intelligence processors requires standard benchmarks for fair comparison and system optimization （in both software and hardware）. However, existing benchmarks are unsuitable for benchmarking intelligence processors due to their non-diversity and nonrepresentativeness. Also, the lack of a standard benchmarking methodology further exacerbates this problem. In this paper, we propose BenCHIP, a benchmark suite and benchmarking methodology for intelligence processors. The benchmark suite in BenCHIP consists of two sets of benchmarks： microbenchmarks and macrobenchmarks. The microbenchmarks consist of single-layer networks, They are mainly designed for bottleneck analysis and system optimization. The macrobenchmarks contain state-of-the-art industrial networks, so as to offer a realistic comparison of different platforms. We also propose a standard benchmarking methodology built upon an industrial software stack and evaluation metrics that comprehensively reflect various characteristics of the evaluated intelligence processors, BenCHIP is utilized for evaluating various hardware platforms, including CPUs, GPUs, and accelerators. BenCHIP will be open-sourced soon.

关键词： deep learning intelligence processor benchmark

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Bismuth Oxide Selenium/Graphene Oxide Composites:Toward High-Performance Electrodes for Aqueous Alkaline Battery

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energy & environmental Materials 2021年第3期4卷 465-473页

作者： Yi-Lin Liu Meng-Qiu Li Gui-Gen Wang Le-Yang Dang Fei Li Mei Er Pam {2.-Yu Zhang jie-Cai Han hui Ying Yang Shenzhen Key Laboratory for Advanced Materials Harbin Institute of TechnologyShenzhenShenzhen 518055China Pillar of engineering Product Development Singapore University of Technology and Design8 Somapah RoadSingapore City 487372Singapore National Key Laboratory of Science and Technology on Advanced Composites in Special environments Harbin Institute of TechnologyHarbin 150080China

Aqueous alkaline battery represents a promising energy storage technology with both high energy density and high power density as rechargeable ***,the low theoretical capacities,kinetics and stability of anode materials have limited their developments and *** this study,we propose a novel method to produce two-dimensional layered bismuth oxide selenium(Bi_(2.O_(2.Se)and reduced graphene oxide(r GO)composites via a one-step hydrothermal *** volume change caused by phase change during rapid charging and discharging is significantly reduced and the capacity reaches 2.3.83 m Ah g^(-1)at a current density of 0.5 A g^(-1).The Bi_(2.O_(2.Se/r GO electrode exhibits excellent cycling stability in which the capacity retention rate is 81.04%after 5000 *** importantly,the Bi_(2.O_(2.Se/r GO nanosheet composite is used as the anode electrode material with MnCo_(2.O_(4.5)@Ni(OH)_(2.as the cathode electrode material in aqueous alkaline *** the energy density is 76.16 W h kg^(-1),the power density reaches 308.65 W kg^(-1).At a power density of 10.2. k W kg^(-1),the energy density remains as high as 33.86 W h kg^(-1).The results presented here may advance the understanding of the issues facing the development of aqueous battery anode materials.

关键词： anode materials aqueous alkaline battery Bi_(2.O_(2.Se nanosheet reduced graphene oxide

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Zinc tartrate oriented hydrothermal synthesis of microporous carbons for high performance supercapacitor electrodes

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Chinese Chemical Letters 2016年第3期27卷 399-404页

作者： Ming-Xian Liu Ling-Yan Chen Da-Zhang Zhu hui Duan Wei Xiong Zi-{2. Xu Li-hua Gan Long-Wu Chen Shanghai Key Lab of Chemical Assessment and Sustainability Department of ChemistryTongji University School of Chemistry and environmental engineering Wuhan Institute of Technology

A novel zinc tartrate oriented hydrothermal synthesis of microporous carbons was reported. Zinc–organic complex obtained via a simple chelation reaction of zinc ions and tartaric acid is introduced into the networks of resorcinol/formaldehyde polymer under hydrothermal condition. After carbonization process, the resultant microporous carbons achieve high surface area（up to 12.5 m^2.g） and large mean pore size（1.99 nm） which guarantee both high specific capacitance（2.5 F/g at 1.0 A/g） and fast charge/discharge operation（2. A/g） when used as a supercapacitor electrode. Besides, the carbon electrode shows good cycling stability, with 93% capacitance retention at 1.0 A/g after 1000 cycles. The welldesigned and high-performance microporous carbons provide important prospects for supercapacitor applications.

关键词： Zinc tartrate Hydrothermal synthesis Microporous carbon Supercapacitor Electrode

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中医综合治疗难治性突聋的临床疗效观察

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广州中医药大学学报 2024年第6期41卷 1486-1492页

作者：肖琪张丹慧刘蓬洪伟哲何伟平郭华民徐慧贤刘景郭恩钦广州中医药大学第一临床医学院广东广州510405 广东省第二中医院白云院区体检中心广东广州510405 佛山市高明区中医院耳鼻喉科广东佛山528500 广州中医药大学第一附属医院耳鼻咽喉头颈外科广东广州510405 广东省中医临床研究院耳鼻喉病研究所广东广州510405 广州中医药大学附属中山中医院耳鼻喉科广东中山528400

【目的】观察中医综合治疗难治性突聋(即病程超过2.的突发性聋)的疗效,并对可能影响预后的因素进行分析。【方法】回顾性分析2.05年至2.2.年期间在广州中医药大学第一附属医院耳鼻喉科住院部接受治疗的405例难治性突聋患者,经个体化辨... 详细信息

【目的】观察中医综合治疗难治性突聋(即病程超过2.的突发性聋)的疗效,并对可能影响预后的因素进行分析。【方法】回顾性分析2.05年至2.2.年期间在广州中医药大学第一附属医院耳鼻喉科住院部接受治疗的405例难治性突聋患者,经个体化辨证后进行中药内服、针灸治疗、耳穴贴压等中医综合治疗后的临床疗效,分析不同病程、耳聋程度、听力曲线类型、既往治疗史、伴随症状及不同证型患者的疗效差异。【结果】405例难治性突聋患者中,痊愈率为5.7%,总有效率为2..1%;其中,轻度聋、低频下降型、既往未经治疗者疗效最好,差异均有统计学意义(P1);而不同病程、有无伴随症状及不同证型患者的疗效比较,差异均无统计学意义(P>0.05)。【结论】中医综合治疗对难治性突聋具有一定疗效,经西医常规治疗效果不佳的患者仍可从中医综合治疗中获益。

关键词：突发性聋难治性突聋中医综合治疗疗效

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The Tea Tree Genome Provides Insights into Tea Flavor and Independent Evolution of Caffeine Biosynthesis

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Molecular Plant 2017年第6期10卷 866-877页

作者： en-hua Xia Hai-Bin Zhang Jun Sheng Kui Li Qun-jie Zhang Changhoon Kim Yun Zhang Yuan Liu Ting Zhu Wei Li hui huang Yan Tong Hong Nan Cong shi Chao shi Jian-Jun Jiang Shu-Yan Mao Jun-Ying Jiao Dan Zhang Yuan Zhao You-jie Zhao Li-Ping Zhang Yun-Long Liu Ben-Ying Liu Yue Yu Sheng-Fu Shao De-Jiang Ni Evan E. Eichler Li-Zhi Gao Plant Germplasm and Genomics Center Germplasm Bank of Wild Species in Southwestern China Kunming Institute of Botany Chinese Academy of SciencesKunming 650201 China Institution of Genomics and Bioinformatics South China Agricultural University Guangzhou 510642 China university of the Chinese Academy of Sciences Beijing 100039 China Yunnan Agricultural university Kunming 650204 China Agrobiological Gene Research Center Guangdong Academy of Agricultural Sciences Guangzhou 510640 China Macrogene Inc. Seoul 08511 South Korea College of Life Science Liaoning Normal University Dalian 116081 China National Tea Tree Germplasm Bank Tea Research Institute Yunnan Academy of Agricultural Sciences Menghai 666201 China Jinhua International Camellia Germplasm Bank Jinhua 321000 China Department of Tea Science Key Lab for Horticultural Plant Biology Huazhong Agricultural University Wuhan 430070 China Howard Hughes Medical institute University of Washington Seattle WA 98195 USA

Tea is the world＇s oldest and most popular caffeine-containing beverage with immense economic, medicinal, and cultural importance. Here, we present the first high-quality nucleotide sequence of the repeat-rich （80.9%）, 3.02.Gb genome of the cultivated tea tree Camellia sinensis. We show that an extraordinarily large genome size of tea tree is resulted from the slow, steady, and long-term amplification of a few LTR retrotransposon families. In addition to a recent whole-genome duplication event, lineage-specific expansions of genes associated with flavonoid metabolic biosynthesis were discovered, which enhance catechin production, terpene enzyme activation, and stress tolerance, important features for tea flavor and adaptation. We demonstrate an independent and rapid evolution of the tea caffeine synthesis pathway relative to cacao and coffee. A comparative study among 2. Camellia species revealed that higher expression levels of most flavonoid- and caffeinebut not theanine-related genes contribute to the increased production of catechins and caffeine and thus enhance tea-processing suitability and tea quality. These novel findings pave the way for further metabolomic and functional genomic refinement of characteristic biosynthesis pathways and will help develop a more diversified set of tea flavors that would eventually satisfy and attract more tea drinkers worldwide.

关键词： Tea tree genome Comparative genomics Tea flavor Tea-proccessing suitability Global adaptation,Caffeine biosynthesis

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