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多机器人覆盖技术研究进展

控制与决策 2008年第5期23卷 481-486,491页

作者：蔡自兴崔益安中南大学信息科学与工程学院

系统地总结了当前覆盖问题的定义、分类和应用前景.对多机器人覆盖中关于通信、环境地图、路径规划算法及效果评价等方面的研究进展情况进行了阐述.分析并指出若干多机器人覆盖研究中的重点和难点问题:体系结构、通信技术、协商协作、... 详细信息

系统地总结了当前覆盖问题的定义、分类和应用前景.对多机器人覆盖中关于通信、环境地图、路径规划算法及效果评价等方面的研究进展情况进行了阐述.分析并指出若干多机器人覆盖研究中的重点和难点问题:体系结构、通信技术、协商协作、地图表示、路径规划及效果评价,并对未来的研究发展方向进行了探讨.

关键词：多机器人覆盖路径规划算法效果评价研究进展

Nitrogen addition frequency and propagule pressure influence Solidago canadensis invasion into native plant community

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Ecosystem Health and Sustainability 2022年第1期8卷 342-351页

作者： Xuan-Shao Liu Jing-Fang cai Lin Liu Kai Sun Fan Jiang yi-luan Shen Si-Ha A Hong-Li Li The Key Laboratory of Ecological Protection in the Yellow River Basin of National Forestry and Grassland Administration School of Ecology and Nature ConservationBeijing Forestry UniversityBeijingChina

Introduction:Propagule pressure(i.e.,the number of propagules)has long been recognized to play an essential role in plant *** it is not clear whether propagule pressure influences the invasion of exotic plants into native plant communities when different frequencies of nitrogen are ***:We established an experiment with three plant communities that included native plant communities alone(four grasses,two legumes and two forbs)or native plant communities with one or five invasive plants,Solidago canadensis,under three frequencies of nitrogen addition(no addition or low or high addition with the same amount).Results:High propagule pressure significantly enhanced the biomass and relative dominance index of ***,high propagule pressure only decreased the total and aboveground biomass of the ***,the competitive effect between *** and the native community and biomass of the whole native community varied according to different ***:Overall,high propagule pressure encouraged invasion by ***,while alow nitrogen frequency was advantageous for the native community to resist invasion in this *** results provide a scientific basis to manage and control the invasion of ***.

关键词： clonal plants invasiveness nitrogen addition level propagule number

Synthesis of A Natural Cytotoxic Alkaloid Artabotrine and its Analogue

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Chinese Chemical Letters 2006年第1期17卷 5-8页

作者： Hong Xia DING Wei lu Lei Xiang YANG Hai Bo LI Hua BAI Xiu Mei WU Jun Chao cai Yu ZHAO Department of Traditional Chinese Medicine and Natural Drug Research College of Pharmaceutical Sciences Zhejiang University Hangzhou 310031 Shanghai Institute of Material Medica Chinese Academy of Sciences SIBS Shanghai 200031 Zhejiang Hisun Naturelite Pharmaceutical R＆D Co. Ltd. Hangzhou 310007

Artabotrine 1 is a novel N-methoxylated 4,5-dioxoaporphine alkaloid which has been reported to be cytotoxic against P-388 cells. The total synthesis of 1 was carded out, and one of its analogue, N-methoxycepharadione B 2, was also synthesized. Both of the alkaloids and several intermediates were cytotoxic to several selected tumor cell lines.

关键词： Artabotrine aporphine alkaloid cytotoxicity synthesis.

Facile Fabrication of Core-Shell Structure Fe_(3)O_(4)@C Nanodots for Enhanced Lithium-Sulfur Batteries

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Acta Metallurgica Sinica(English Letters) 2021年第3期34卷 410-416页

作者： Xiang-Rui He Yu-Jiao Zhang Li-Fan Yang Ji-lu Zhao Hong-Tai Li yi-Bo Gao Bao Wang Xiao-Dong Guo School of Chemical Engineering Sichuan UniversityChengdu 610065China State Key Laboratory of Biochemical Engineering.Instituteof Process Engineering Chinese Academy of SciencesBeijing 100190China School of Chemistry Sun Yat-Sen UniversityGuangzhou 510275China

Lithium sulfur battery(LSB) is widely considered as a next-generation battery system due to its high theoretical energy density of 2567 Wh ***,several inherent issues obstruct the business application of *** address these issues,we assemble core-shell structure Fe_(3)O_(4)@C nanodots with 5 nm diameter as a valid sulfur host via a convenient organic pyrolysis treatment followed by *** nanosized Fe3O4 particles could expose more chemisorption sites and inhibit the polysulfides ***,the carbon layer could not only increase the conductivity but also ensure structural integrity during cyclic ***,the mesoporous channels around Fe_(3)O_(4)@C could supply sufficient space to load sulfur and physically restrict the shuttle of ***,the resultant S/Fe_(3)O_(4)@C cathode shows a highly initial capacity of 1089 mAh g^(-1) at 0.2 C,even retains 655 mAh g^(-1) over 200 cycles at 1 C.

关键词： Fe(3)O_(4) Nanodots Cathode Lithium–sulfur batteries

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饱和度对混凝土三轴抗压强度的影响试验研究

天津大学学报（自然科学与工程技术版） 2023年第8期56卷 870-877页

作者：崔健鹿羿张惠申蔡润杰天津大学建筑工程学院天津300350 滨海土木工程结构与安全教育部重点实验室(天津大学) 天津300350

混凝土结构服役环境非常复杂,其孔隙中自由水饱和度和受力状态因服役环境不同而有较大的区别.为研究不同含水饱和度混凝土在三向受力状态下的力学性质,本文通过干燥、真空饱水、自然蒸发3个步骤制作了0、50%和100%3种饱和度、2种强度等... 详细信息

混凝土结构服役环境非常复杂,其孔隙中自由水饱和度和受力状态因服役环境不同而有较大的区别.为研究不同含水饱和度混凝土在三向受力状态下的力学性质,本文通过干燥、真空饱水、自然蒸发3个步骤制作了0、50%和100%3种饱和度、2种强度等级的混凝土试件.试验采用了长径比2∶1的圆柱体和边长50 mm的立方体两种形状的试件.对总共60余个混凝土试件进行了无侧限单轴压缩试验和不同围压下的三轴压缩试验.试验结果表明:随着饱和度的增加,混凝土材料的单轴抗压强度逐渐降低,且普通强度混凝土的下降幅度比高强度混凝土高;在围压条件下,不同含水饱和度的混凝土试件轴向抗压强度均有所提高,普通强度混凝土的三轴强度比高强混凝土提高的幅度更大,且饱和度高的试件对侧向压力更为敏感,这主要是由于多向应力条件下产生的孔隙水压力作用;根据所得到的试验结果,基于Mohr-Coulomb强度准则建立了考虑饱和度影响的混凝土强度模型,用于指导混凝土结构在不同湿度服役环境下的设计,提高设计的可靠性.

关键词：混凝土孔隙水饱和度三轴压缩抗压强度

Pyogenic arthritis,pyoderma gangrenosum,and acne syndrome in a Chinese family:A case report and review of literature

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World Journal of Clinical Cases 2021年第22期9卷 6393-6402页

作者： Ling-Yun lu Xue-Yang Tang Guo-Jing luo Meng-Jia Tang yi Liu Xi-Jie Yu Department of Endocrinology Laboratory of Endocrinology and MetabolismWest China HospitalSichuan UniversityChengdu 610041Sichuan ProvinceChina Department of Integrated Traditional Chinese and Western Medicine West China HospitalSichuan UniversityChengdu 610041Sichuan ProvinceChina Department of Pediatric Surgery West China HospitalSichuan UniversityChengdu 610041Sichuan ProvinceChina Department of Endocrinology Zhuhai People's HospitalZhuhai Hospital Affiliated with Jinan UniversityZhuhai 519000Guangdong ProvinceChina Department of Rheumatology and Immunology Rare Disease CenterWest China HospitalSichuan UniversityChengdu 610041Sichuan ProvinceChina

BACKGROUND Pyogenic arthritis,pyoderma gangrenosum,and acne(PAPA)syndrome is a rare autosomal dominant genetic disease characterized by severe autoimmune inflammation,caused by mutations in the PSTPIP1 *** to PAPA heterogeneous clinical manifestation,misdiagnosis or delayed diagnoses are difficult to *** the use of whole-exome sequencing,we identified a missense mutation in the PSTPIP1 gene in a Chinese *** the best of our knowledge,this is the first case of PAPA reported in *** SUMMARY A 9-year-old boy suffered from recurrent aseptic pyogenic arthritis triggered by minor trauma or few obvious predisposing causes for more than 3 *** arthritis occurred every 3-5 mo,affecting his knees,elbows,and ankle ***,such as glucocorticoids,antibiotics,even surgeries could alleviate joints pain and swelling to some extent but could not inhibit the recurrence of *** symptoms were present in his younger brother but not in his *** to the whole-exome sequencing,a missense mutation in exon 11 of the PSTPIP1 gene(c.748G>C;p.E250Q)was detected in the boy,his young-er brother and his *** into account the similar phenotypic features with PAPA syndrome reported previously,we confirmed a diagnosis of PAPA syndrome for the *** In this case,a missense mutation(c.748G>C;p.E250Q)in PSTPIP1 gene was identified in a Chinese family with PAPA *** studies emphasize the fact that PAPA syndrome is hard to diagnose just through the clinical manifestations owing to its heterogeneous *** testing is an effectual auxiliary diagnostic method,especially in the early stages of pyogenic *** if we have a deep understanding and rich experience of this rare disease can we make a prompt diagnosis,develop the best clinical treatment plan,and give good fertility guidance.

关键词： Pyogenic arthritis,pyoderma gangrenosum,and acne syndrome PSTPIP1 Autoinflammatory disease Rare disease Case report

Response of dryland crops to climate change and drought-resistant and water-suitable planting technology:A case of spring maize

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Journal of Integrative Agriculture 2023年第7期22卷 2067-2079页

作者： FAN Ting-lu LI Shang-zhong ZHAO Gang WANG Shu-ying ZHANG Jian-jun WANG Lei DANG yi CHENG Wan-li Key Laboratory for Efficient Utilization of Water Resources in Dryland Areas in Gansu Province Lanzhou 730070P.R.China Dryland Agriculture Institute Gansu Academy of Agricultural SciencesLanzhou 730070P.R.China

Climate change has a significant impact on ***,the impact investigation is currently limited to the analysis of meteorological data,and there is a dearth of long-term monitoring of crop phenology and soil moisture associated with climate *** this study,temperature and precipitation(1957-2020)were recorded,crop growth(1981-2019)data were collected,and field experiments were conducted at central and eastern Gansu and southern Ningxia,*** mean temperature increased by 0.36°C,and precipitation decreased by 11.17 mm per *** average evapotranspiration(ET)of winter wheat in 39 years from 1981 to 2019 was 362.1 mm,demonstrating a 22.1-mm decrease every 10 ***,the ET of spring maize was 405.5 mm over 35 years(1985-2019),which did not show a downward *** 10 years,growth periods were shortened by 5.19 and 6.47 d,sowing dates were delayed by 3.56 and 1.68 d,and maturity dates advanced by 1.76 and 5.51 d,respectively,for wheat and maize.A film fully-mulched ridge-furrow(FMRF)system with a rain-harvesting efficiency of 65.7‒92.7%promotes deep rainwater infiltration into the *** leads to double the soil moisture in-furrow,increasing the water satisfaction rate by 110‒160%.A 15-year grain yield of maize increased by 19.87%with the FMRF compared with that of half-mulched flat *** yield and water use efficiency of maize increased by 20.6 and 17.4%when the density grew from 4.5×10^(4)to 6.75×10^(4)plants ha-1 and improved by 12.0 and 12.7%when the density increased from 6.75×10^(4)to 9.0×10^(4)plants ha-1,***,responses of maize yield to density and the corresponding density of the maximum yield varied highly in different rainfall *** density parameter suitable for water planting was 174 maize plants ha-1 with 10 mm ***,management strategies should focus on adjusting crop planting structure,FMRF water harvesting system,and water-suitable planting to mitigate the adverse effects

关键词： climate change dryland maize and wheat plastic mulch water-suitable planting

席建元教授三法联合治疗阴血亏虚型黄褐斑的经验

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湖南中医药大学学报 2024年第4期44卷 655-659页

作者：姜艺李淼蔡诗敏刘向男陈嘉滢席建元周忠志湖南中医药大学湖南长沙410208 湖南中医药大学第一附属医院湖南长沙410007

黄褐斑是面部获得性色素性疾病,属于中医学“黧黑斑”范畴。席建元教授诊治黄褐斑临床经验丰富,疗效满意。席建元教授认为黄褐斑的病机为阳明脉衰,初起以气血亏虚为主,病久可损及肾精阴血津液,故以阴血亏虚型多见;治疗上当以滋阴补血、... 详细信息

黄褐斑是面部获得性色素性疾病,属于中医学“黧黑斑”范畴。席建元教授诊治黄褐斑临床经验丰富,疗效满意。席建元教授认为黄褐斑的病机为阳明脉衰,初起以气血亏虚为主,病久可损及肾精阴血津液,故以阴血亏虚型多见;治疗上当以滋阴补血、活血养颜为要,通过口服养颜玉肌膏、外敷珍珠四白散面膜和穴位注射复方当归注射液三法合用,以三管齐下;同时重视情志调摄,从而淡化或消除色斑。

关键词：黄褐斑黧黑斑阳明脉衰阴血亏虚三法联合养颜玉肌膏珍珠四白散面膜复方当归注射液

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淮安市碳排放效率动态变化及影响因素分析

淮阴师范学院学报（自然科学版） 2024年第2期23卷 131-136页

作者：王子云卢妍孙益风付乐乐王甜甜淮阴师范学院地理科学与规划学院江苏淮安223300

以淮安市为研究对象,收集该市2013-2021年相关人口、GDP、能源消耗等数据,计算出碳排放总量、人均碳排放、VCF等值.结果显示,淮安市碳排放总量总体呈上升趋势,2019年达到碳排放总量峰值,同时也是碳排放效率最低值.2013年碳排放总量为最... 详细信息

以淮安市为研究对象,收集该市2013-2021年相关人口、GDP、能源消耗等数据,计算出碳排放总量、人均碳排放、VCF等值.结果显示,淮安市碳排放总量总体呈上升趋势,2019年达到碳排放总量峰值,同时也是碳排放效率最低值.2013年碳排放总量为最低值,2018-2019年上升幅度最大,增长近30%.淮安市碳排放效率总体呈上升趋势,由2013年的0.91上升到2021年的1.0,淮安市在2013-2021年期间经济稳步发展,单位能源消耗产出GDP增加.针对淮安市现状提出了发展低碳经济的建议,为推动淮安市可持续发展提供参考.

关键词：碳排放效率低碳经济淮安市