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Nano-flower spherical SnS2.combined with a special lithium storage mechanism as a multifunctional separator for lithium-sulfur batteries contributes to ultra-high initial discharge specific capacity

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Science china(Technological Sciences) 2024年第2期67卷 509-519页

作者： LIU HuaZhong XIONG YaPing HUANG MouZhi chen ZongMin YANG xiao ZHANG Ze YANG ZhenYu CAI {2. School of Chemistry&Chemical Engineering Nanchang UniversityNanchang 330031China

The critical factors that limit the electrochemical performance of lithium-sulfur(Li-S)batteries are mainly the“shuttle effect”of polysulfides and the slow redox reaction between lithium polysulfides(LiPSs).Herein,a nano-sphere-type material selfassembled from tin disulfide nanosheets is designed and applied to the Li-S cell separator in this *** SnS_(2.@PP modified separator not only acts as a dual restriction for LiPSs by chemisorption and physical *** the same time,it improves the catalytic activity of the redox reaction between *** SnS_(2.has extremely high electrochemical ***,a portion of the lithium ions can be inserted into SnS_(2.to form Li_(x)SnS_(2.and contribute to the capacity during the first discharge of the *** addition,Li_(x)SnS_(2.possesses a high degree of stability,and it does not undergo further de-alloying reactions even at the high potential of the Li-S *** benefit is that the steady-state Li_(x)SnS_(2.acts as a lithium-containing *** can form special Li^(+)channels on the surface of the separator,thus greatly improving the efficiency of Li+*** results showed that the SnS_(2.@PP-based cell exhibited extremely high initial discharge specific capacity(1477 m Ah g^(-1)at 0.1 C)and excellent rate performance(631 m Ah g^(-1)at 5 C).Even after 1000 cycles at 2.C,the cell exhibited a low decay rate of 0.06%per cycle on *** addition,the superior electrochemical performance was obtained even with a high sulfur loading of 5.1 mg cm^(-2.and low electrolyte of E/S=8μL mg^(-1).

关键词： Li-S batteries modified separators polysulfides catalytic conversion high electrochemical activity

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Changes of infrared absorption wave number of aromatic-ring C=C bond of vitrinite and their significance

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Chinese Science Bulletin 1998年第12期43卷 1048-1050页

作者： xiao jianxin 1 and chen shanqing 2.1. china university of geosciences, Beijing 100083, china 2. Yichang Institute of Geology and Mineral Resources, Yichang 443003, china china university of {2. Beijing China Yichang Institute of Geology and Mineral Resources Yichang China

The humilith series of lignite, longflame coal, gas coal, fat coal, coking coal, lean coal, meagre coal and anthracite are measured by FIR1600 infrared spectrophotometer. The variation curve between the infrared absorption wave number of aromaticring C--C bond of vitrinite and its reflectance values are gained, which shows the shift of infrared absorption wave number of aromaticring C--C bond of humic coals towards lower wave number with the increase of coalification. It is believed that the coal rank of humilith series can be determined and more evolutional information about coal composition and structure can be obtained by the infrared spectroscopic method.

关键词： aromatic_nucleus C--C bond infrared absorption wave number vitrinite humic coal.

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Electrochemical CO_(2.reduction to C_(2.)products over Cu/Zn intermetallic catalysts synthesized by electrodeposition

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Frontiers in Energy 2024年第1期18卷 80-88页

作者： Ting DENG Shuaiqiang JIA Shitao HAN jianxin ZHAI Jiapeng JIAO xiao {2. {2.g XUE Xueqing XING Wei XIA Haihong WU Mingyuan HE Buxing HAN School of Chemistry and Molecular Engineering East China Normal UniversityShanghai 200062China Institute of Eco-Chongming Shanghai 202162China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Institute of Chemistry Chinese Academy of SciencesBeijing 100190China

Electrocatalytic CO_(2.reduction(ECR)offers an attractive approach to realizing carbon neutrality and producing valuable chemicals and fuels using CO_(2.as the ***,the lack of cost-effective electrocatalysts with better performances has seriously hindered its ***,a one-step co-electrodeposition method was used to introduce Zn,a metal with weak^(*)CO binding energy,into Cu to form Cu/Zn intermetallic catalysts(Cu/Zn IMCs).It was shown that,using an H-cell,the high Faradaic efficiency of C_(2.)hydrocarbons/alcohols()could be achieved in ECR by adjusting the surface metal components and the applied *** suitable conditions,FEC_(2.)and current density could be as high as 75%and 40 mA/cm^(2.,*** with the Cu catalyst,the Cu/Zn IMCs have a lower interfacial charge transfer resistance and a larger electrochemically active surface area(ECSA),which accelerate the ***,the^(*)CO formed on Zn sites can move to Cu sites due to its weak binding with*CO,and thus enhance the C–C coupling on the Cu surface to form C_(2.)products.

关键词： carbon dioxide electroreduction electrochemistry co-electrodeposition intermetallic catalysts value-added chemicals

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How neonatal diet affects the long-term development of rumination behavior,rumen fermentation and feed digestion in dairy calves fed a high milk level?

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Animal Nutrition 2024年第1期16卷 326-337页

作者： jianxin xiao Tianyu {2. Rong Peng Gibson M.Alugongo Hui Yang Shuai Liu Yulin Ma Jingjun Wang Shengli Li Zhijun Cao State Key Laboratory of Animal Nutrition and Feeding International Calf and Heifer OrganizationCollege of Animal Science and TechnologyChina Agricultural UniversityBeijing 100193China Key Laboratory of Low Carbon Culture and Safety Production in Cattle in Sichuan Animal Nutrition InstituteSichuan Agricultural UniversityChengdu 611130China

This study was to investigate growth performance,rumination development,rumen fermentation and feed digestion in young calves provided high volumes(about 2.%of calf birth weight)of milk with or without forage inclusion and how these parameters correlate with each *** after birth,160 newborn Holstein female calves(41.6±4.2.kg of initial BW)were randomly divided into 2.treatments:1)starter(CON,only starter)and 2.starter and hay(HAY,both starter and hay).The calves were fed their respective experimental diets from d 4 to 84,after which they were all introduced to similar diets until the end of the experiment on d *** had no effect on growth and structural measurements throughout the experimental ***,treatment had an effect on the other parameters,mainly during the post-weaning *** supplementation tended to reduce starter dry matter intake(P=0.05),while increasing the forage intake(P1)and the feed-to-gain ratio(P1).HAY calves had increased neutral detergent fiber(NDF)and physically effective NDF(peNDF)intakes(P1)starch intake compared to CON *** HAY calves had a higher rumination time(P1),ruminal pH(P1),and acetate-to-propionate ratio(P=0.05)compared to the CON *** correlation analysis showed that rumination time was positively related to the ruminal p H at d 84(P=0.01)and 196(P=0.02..The HAY calves had similar apparent total-tract digestibility of dry matter(DM),NDF and ether extract(EE),but lower digestibility of organic matter(OM,P=0.03),crude protein(CP,P1)and starch(P1)compared to those of the CON calves at week ***,there were no positive relationships between rumination time and nutrient digestibility or between rumination time per kilogram DM and nutrient *** conclusion,feeding hay to calves fed a high milk level improved rumination during the post-weaning period only,without a concomitant effect on growth performance thro

关键词： Neonatal calf Early forage feeding Rumination Rumen fermentation Nutrient digestibility

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Insights into the Impact of Bifidobacterium bifidum， B. breve， and B. longum on the Immune Response Against Salmonella Infection in Neonatal Rats

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Food Science and Human Wellness 2024年

作者： Chunxiu Lin Yugui Lin Min Guo Rui xiao Shunhe Wang Yonghua Zhou jianxin Zhao Hao Zhang Wei {2. Gang Wang State Key Laboratory of Food Science and Resources， Jiangnan university School of Food Science and Technology， Jiangnan university Microbiology Laboratory， Zhongshan Bo'ai Hospital， Southern Medical university Key Laboratory of National Health Commission on Parasitic Disease Control and Prevention， Jiangsu Provincial Key Laboratory on Parasite and Vector Control Technology， Jiangsu Institute of Parasitic Diseases National Engineering Research Center for Functional Food， Jiangnan university (Yangzhou) Institute of Food Biotechnology， Jiangnan university Wuxi Translational Medicine Research Center and Jiangsu Translational Medicine Research Institute Wuxi Branch

Infants exhibit diminished susceptibility to external infections， a phenomenon closely linked to the pervasive presence of the bifidobacterial community within their intestinal tract. Nonetheless， a significant knowledge gap remains concerning the distinct species of bifidobacteria initiating anti-infection immune responses during the early developmental stages. In this study， the impact of early intervention with Bifidobacterium bifidum (B. bifidum)， B. breve， and B. longum on neonatal rats infected with Salmonella enterica serovar Typhimurium (S. typhimurium) SL1344 were compared. The study encompasses various immunity levels， including gut immunity， central immunity (thymus)， peripheral immunity (spleen)， and brain immunity. Following Salmonella infection， significant alterations in neonatal rats were observed in growth and developmental levels， immune markers， cytokine levels， balance of T lymphocyte subpopulations， intestinal barrier function， and blood-brain barrier integrity. Compared with B. breve and B. longum， B. bifidum demonstrated more pronounced efficacy in regulating these physiological processes. By conducting multi-level analyses of gut microbiota， bifidobacterial community， colonic content metabolomics， and serum metabolomics， the significance of B. bifidum's role is underscored， and the immune-enhancing function of messenger metabolites is unveiled. Among these metabolites， γ-L-Glutamyl-L-glutamic acid and Orotic acid were found to be shared by all three species， while Hippuric acid and 1a，1b-dihomo Prostaglandin F2. were unique to B. bifidum， and DL-Arginine was specific to B. longum. Overall， this study has provided novel insights into the intervention and immunomodulation by Bifidobacterium in early-life infections， emphasizing the significant role of B. bifidum.

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油松与辽东栎混交对外生菌根形态的影响

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应用生态学报 2024年第8期35卷 2099-2107页

作者：肖杨陈璐璐吴传敬张雨雪孙建新北京林业大学生态与自然保护学院北京100083 中国科学院地理科学与资源研究所生态系统网络观测与模拟重点实验室北京100101 河北大学生命科学学院河北保定071002

菌根多样性和形态可塑性决定了寄主植物适应生境变化的能力。为了解针阔叶树种混交对外生菌根形态特征的影响及其潜在机制,本研究调查了山西太岳山油松和辽东栎纯林及混交林(油松与辽东栎3:1混交、1:1混交、1:3混交)外生菌根形态特征,... 详细信息

菌根多样性和形态可塑性决定了寄主植物适应生境变化的能力。为了解针阔叶树种混交对外生菌根形态特征的影响及其潜在机制,本研究调查了山西太岳山油松和辽东栎纯林及混交林(油松与辽东栎3:1混交、1:1混交、1:3混交)外生菌根形态特征,分析了环境因子对外生菌根形态变异的影响。结果表明:所有林型中油松和辽东栎外生菌根均以无外延菌丝或极少外延菌丝的密接型为主;油松在混交林中根部密接型和中程型外生菌根的根尖数量分别比纯林显著升高3%~10%和10%~16%,辽东栎在混交林中根部密接型外生菌根养分获取类型的根尖数量比纯林显著升高5%10%;油松和辽东栎在混交林中外生菌根Simpson形态多样性指数显著高于纯林。冗余分析表明,油松中土壤氮磷比对其外生菌根形态变异的影响最大(解释率为7.5%),其次为土壤含水率(5.2.),而土壤碳含量对辽东栎外生菌根形态变异的影响最大(3.5%)。油松和辽东栎在混交时均可以通过外生菌根的形态变异以适应对土壤养分的竞争和共享。

关键词：共生生境外生菌根外生菌根形态养分获取策略

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基于OpenLane的专用集成电路设计工具

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福州大学学报（自然科学版） 2024年第3期52卷 261-267页

作者：王建新许弘可郑玉崝肖超恩张磊陈欣北京电子科技学院电子与通信工程系北京100070

提出一种基于OpenLane的专用集成电路(ASIC)设计工具的设计方案.以Gambas开发环境为基础,利用插件技术实现对OpenLane工具链的集成,完成基于OpenLane的ASIC设计工具,即EasyASIC.该工具涵盖工程管理、代码编辑、Verilog代码的编译、仿真... 详细信息

提出一种基于OpenLane的专用集成电路(ASIC)设计工具的设计方案.以Gambas开发环境为基础,利用插件技术实现对OpenLane工具链的集成,完成基于OpenLane的ASIC设计工具,即EasyASIC.该工具涵盖工程管理、代码编辑、Verilog代码的编译、仿真、OpenLane初始化文件的配置、GDSII文件的生成、GDS2.和GDS3D显示等功能,从而实现ASIC设计的自动化.以32.bit有符号乘法器为例,对该工具进行功能验证测试.实验结果表明,EasyASIC能够在国产Deepin操作系统下流畅运行,实现32.bit有符号乘法器从寄存器传输级文件描述向GDSII文件的转换,该工具有很强的操作性和易用性,对于提升我国集成电路设计工具软件产业水平具有一定的参考意义.

关键词：集成电路设计工具专用集成电路 OpenLane Gambas

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Downward continuation of aeromagnetic data to the marine surface

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Acta Oceanologica Sinica 2008年第1期27卷 54-60页

作者： XU Shizhe WANG Rui ZHOU jianxin xiao Pengfei {2. Shengchang Department of Earth Sciences Zhejiang University Hangzhou 310027 China Department of Navigation Guarantee Navy Headquarters Chinese People＇s Libration Army Tianjing 300042 China china Aero-geophysieal Survey and Remote Sensing Center for Land and Natural Resource Beijing 100083 China School of Geophysics and Information Technology China University of Geosciences Beijing 100083 China

The existing methods of downward continuation of potential field cannot be used to continue the aeromagnetic data to the marine surface because of the limited continuation distance. An iteration method for the downward continuation of potential field with a much larger continuation distance has been developed, which can continue the aeromagnetic data to the marine surface and get the marine - magnetic chart with the same scale as the aeromagnetic data. This downward continuation method will greatly raise the ef- ficiency of marine - magnetic investigation. The principle of the iteration method is presented. The method is demonstrated on synthetic models and real aeromagnetic data. Also, the error brought by continuation is discussed. The efficiency of the iteration method for the downward continuation of potential field is compared with the fast fourier transform （FFT） method, the former is much better than the latter.

关键词： aeromagnetic marine-magnetic downward continuation of potential field iteration method fast fourier transform

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经典名方中乳香的本草考证

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中国实验方剂学杂志 2024年第4期30卷 55-66页

作者：周海燕王青青张奇肖苏萍陈蒙周建新张业达贾丹阳詹志来中国中药有限公司北京102600 北京城市学院北京100094 众花南药有限公司槟城乔治14100 中国中医科学院中药资源中心北京100700

通过查阅历代本草、医籍、方书和近现代文献资料,笔者对经典名方中所用乳香药材从名称、基原、学名、产地、品质评价、采收加工、炮制历史沿革及变迁等方面进行了系统梳理与考证,以期为包含乳香的经典名方开发提供依据。经考证可知,乳... 详细信息

通过查阅历代本草、医籍、方书和近现代文献资料,笔者对经典名方中所用乳香药材从名称、基原、学名、产地、品质评价、采收加工、炮制历史沿革及变迁等方面进行了系统梳理与考证,以期为包含乳香的经典名方开发提供依据。经考证可知,乳香以薰陆香为名始载于《名医别录》,直至唐代《本草拾遗》首次以“乳香”为正名,此后历代本草均延续此名;历代主流基原为橄榄科植物乳香树Boswellia carterii;古代著录的产地主要有古印度和阿拉伯地区,现主产于索马里、埃塞俄比亚及阿拉伯半岛南部;古今乳香药用部位均为树皮渗出的树脂,以春夏两季为主进行采收;近代以来乳香品质以淡黄色、颗粒状、半透明、无砂石和树皮等杂质、粉末粘手、气芳香者为佳。古代炮制方法较多,有净制(水飞、去杂质)、研制(酒研、灯心研)、炒制(清炒、灯心炒、酒炒)、去油、醋制、煎膏等,近现代炮制方法日趋简化,沿用的炮制方法主要为净制、清炒、醋制。现今常用的炮制规格有生乳香、炒乳香、醋乳香,其中生乳香为净制后的生品,炒乳香为清炒法炮制品,醋乳香为净乳香加醋拌炒的炮制品。基于考证结果,建议蠲痹汤等含乳香的经典名方选择乳香树***树皮渗出的树脂,原方注明炮制要求的按要求操作,未注明炮制要求的建议以净制后的生品入药。

关键词：经典名方乳香基原中药炮制本草考证醋制品蠲痹汤

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Permineralized Calamitean Axes from the Upper Permian of Xinjiang, Northwest china and Its Paleoecological Implication

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Journal of Earth Science 2018年第2期29卷 237-244页

作者： Fayao chen xiao Shi {2. Yu Hongfei Chi Jun Zhu Hui Li cheng Huang State Key Laboratory of Biogeology and Environmental Geology School of Earth Sciences China University of Geosciences College of Earth Sciences Jilin University Key-Lab for Evolution of Past Life and Environment in Northeast Asia Ministry of Education Jilin University

Two anatomically preserved calamitean axes are reported for the first time from the Late Permian Wutonggou Formation in the southern Bogda Mountains, Xinjiang Uygur Autonomous Re- gion, Northwest china. Based on the anatomical features, these axes are assigned to Arthropitys. A new species Arthropitys taoshuyuanensis sp. nov. is established. A. taoshuyuanensis sp. nov. possesses a large pith and comprises large pith cavity and a narrow perimedullary zone at the nodes and diaphragms at the internodes. Carinal canals are circular and surrounded by a single layer of metaxylem tracheids. Secondary xylem is divided into interfascicular rays and fascicular wedges. Interfascicular rays are ini- tially four to five cells wide and taper abruptly centrifugally. Fascicular wedge consists of thick-walled tracheids and thin-walled fascicular ray cells. Radial tracheid walls have uniseriate or biseriate circular pits, or scalariform pits. The absence of growth rings in the Arthropitys specimens indicates that they probably lived in the wetland area under stable annual temperature and water sufficient conditions.

关键词： Arthropitys calamitean horsetail Late Permian Xinjiang.

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