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连续退火炉露点对汽车用高强钢磷化处理特性的影响

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上海金属 2024年第3期46卷 62-66页

作者：倪雷上海汽车集团股份有限公司乘用车分公司上海201804

对含0.18%C、1.6%Si、2.2%Mn(质量分数)的汽车用高强钢板在露点为-40、-20、-10、-5、0和10℃的炉气氛中进行了830℃保温2 min后氢气冷却的退火,随后对钢板进行了磷化处理。采用辉光放电光谱仪、扫描电子显微镜和表面电位检测等方法研... 详细信息

对含0.18%C、1.6%Si、2.2%Mn(质量分数)的汽车用高强钢板在露点为-40、-20、-10、-5、0和10℃的炉气氛中进行了830℃保温2 min后氢气冷却的退火,随后对钢板进行了磷化处理。采用辉光放电光谱仪、扫描电子显微镜和表面电位检测等方法研究了退火气氛露点对汽车用高强钢板磷化特性的影响。结果表明:随着退火气氛露点的提高,钢板的磷酸盐膜覆盖率上升,在露点≤-20℃的气氛中退火的钢板磷酸盐膜覆盖率仅为30%,而在露点≥0℃的气氛中退火的钢板磷酸盐膜覆盖率达90%以上;钢板表层形成Si、Mn氧化物是退火气氛露点提高时钢板磷化处理特性改善的重要原因。

关键词：露点高强钢磷化内氧化

High-quality genome assemblies for two Australimusa bananas(Musa spp.)and insights into regulatory mechanisms of superior fiber properties

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Plant Communications 2024年第1期5卷 245-261页

作者： Run Zhou Shuo Wang ni Zhan Weidi He guiming Deng Tongxin Dou Xi-Tong Zhu Wen-Zhao Xie Yu-Yu Zheng Chunhua Hu Fangcheng bi Huijun gao Tao Dong Siwen Liu Chunyu Li Qiaosong Yang Lingqiang Wang Jia-Ming Song Jiangbo Dang Qigao guo ganjun Yi Ling-Ling Chen Ou Sheng Institute of Fruit Tree Research Guangdong Academy of Agricultural SciencesKey Laboratory of South Subtropical Fruit Biology and Genetic Resource UtilizationMinistry of Agriculture and Rural AffairsGuangdong Provincial Key Laboratory of Tropical and Subtropical Fruit Tree ResearchGuangzhou 510640China College of Informatics Huazhong Agricultural UniversityWuhan 430070China State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources College of Life Science and TechnologyGuangxi UniversityNanning 530004China College of Horticulture and Landscape Architecture Southwest UniversityChongqing 400715China

bananas(Musa spp.)are monocotyledonous plants with high genetic diversity in the Musaceae family that are cultivated mainly in tropical and subtropical *** fruits are a popular food,and the plants themselves have diverse *** genetic groups(genomes)are thought to have contributed to current banana cultivars:Musa acuminata(A genome),Musa balbisiana(b genome),Musa schizocarpa(S genome),and species of the Australimusa section(T genome).However,the T genome has not been effectively ***,we present the high-quality TT genomes of two representative accessions,Abaca(Musa textilis),with high-quality naturalfiber,and Utafun(Musa troglodytarum,Fe’i group),with abundant *** the Abaca and Utafun assemblies comprise 10 pseudochromosomes,and their total genome sizes are 613 Mb and 619 Mb,*** genome analysis revealed that the larger size of the T genome is likely attributable to rapid expansion and slow removal of *** with those of Musa AA or bb accessions or sisal(Agava sisalana),Abacafibers exhibit superior mechanical properties,mainly because of their thicker cell walls with a higher content of cellulose,lignin,and *** of MusaCesA cellulose synthesis genes peaks earlier in Abaca than in AA or bb accessions during plant development,potentially leading to earlier cellulose accumulation during secondary cell wall *** Abaca-specific expressed gene MusaMYb26,which is directly regulated by MusaMYb61,may be an important regulator that promotes precocious expression of secondary cell wall ***,MusaWRKY2 and MusaNAC68,which appear to be involved in regulating expression of MusaLAC and MusaCAD,may at least partially explain the high accumulation of lignin in *** work contributes to a better understanding of banana domestica-tion and the diverse genetic resources in the Musaceae family,thus providing resources for Musa genetic improvement.

关键词： Australimusa bananas T genome Musaceae evolution structural variations fiber

基于人工智能的电商物流配送分拣机器人控制系统设计

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自动化与仪器仪表 2024年第7期 279-283页

作者：梁妮广西工业职业技术学院南宁530000

为了提升机器人控制效果与分拣能力,设计基于人工智能的电商物流配送分拣机器人控制系统。主控软件中导航子系统,利用同时定位与地图构建技术结合扩展卡尔曼滤波算法,构建电商物流仓库的环境地图,估计分拣机器人在地图上的位姿,实现分... 详细信息

为了提升机器人控制效果与分拣能力,设计基于人工智能的电商物流配送分拣机器人控制系统。主控软件中导航子系统,利用同时定位与地图构建技术结合扩展卡尔曼滤波算法,构建电商物流仓库的环境地图,估计分拣机器人在地图上的位姿,实现分拣机器人在电商物流仓库内的导航;控制子系统中底盘运行控制器,利用线性控制算法,得到左右底盘驱动电机的速度控制量,完成分拣机器人在环境地图内的行进控制;机械臂运动控制器,利用径向基函数神经网络算法,逼近与补偿分拣机器人机械臂的不确定性,得到分拣机器人机械臂的总控制律,完成机械臂包裹抓取与分拣控制;通过监控终端实时查看分拣机器人的控制效果。实验证明:该系统可有效构建电商物流仓库的环境地图;该系统可有效实现分拣机器人底盘行进控制与机械臂控制;该系统控制后的底盘行进路线,可精准跟踪导航路线,且机械臂控制力矩并无抖振现象,说明该系统的控制效果较优。

关键词：人工智能电商物流配送分拣机器人控制系统径向基函数

有界线性算子的(W_(Π))性质和拓扑一致降标性质

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数学的实践与认识 2024年第2期54卷 211-218页

作者：苏卓媛窦艳妮陕西师范大学数学与统计学院陕西西安710062

设H为无限维复可分的Hilbert空间,b(H)为H上有界线性算子的全体.若有σ(T)σ_(w)(T)=Π(T),则称算子T∈b(H)满足(W_(Π))性质,其中σ(T),σ_(w)(T),Π(T)分别表示算子T的谱、Weyl谱,以及T的所有极点构成的集合.借助拓扑一致降标性质刻... 详细信息

设H为无限维复可分的Hilbert空间,b(H)为H上有界线性算子的全体.若有σ(T)σ_(w)(T)=Π(T),则称算子T∈b(H)满足(W_(Π))性质,其中σ(T),σ_(w)(T),Π(T)分别表示算子T的谱、Weyl谱,以及T的所有极点构成的集合.借助拓扑一致降标性质刻画有界线性算子的(W_(Π))性质,并对算子函数的(W_(Π))性质以及(W_(Π))性质的Riesz摄动进行研究.

关键词： (W_(Π))性质拓扑一致降标谱

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Reconstructed anti-corrosive and active surface on hierarchically porous carbonized wood for efficient overall seawater electrolysis

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Science bulletin 2024年第15期69卷 2337-2341页

作者： Zhijie Chen Wenfei Wei Xiaomin Xu Xiaosong gu Changzhu Huang Wei Wei Zongping Shao bing-Jie ni Hong Chen guangdong Provincial Key Laboratory of Soil and groundwater Pollution Control SUSTech Energy Institute for Carbon NeutralitySchool of Environmental Science and EngineeringSouthern University of Science and TechnologyShenzhen 518055China UNSW Water Research Centre School of Civil and Environmental EngineeringThe University of New South WalesSydney 2052Australia Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources Qinghai Institute of Salt LakesChinese Academy of SciencesXining 810008China WA School of Mines:Minerals Energy and Chemical EngineeringCurtin UniversityPerth 6845Australia Eastern Institute for Advanced Study Eastern Institute of TechnologyNingbo 315200China Centre for Technology in Water and Wastewater School of Civil and Environmental EngineeringUniversity of Technology SydneySydney 2007Australia

Seawater electrolysis for sustainable hydrogen fuel production emerges as an auspicious practice to decarbonize the global energy sector [1]. However, direct seawater electrolysis is severely challenged by the corrosion of anodes by chloride ions, the unwanted chloride oxidation reaction (Cl OR), and the low activity and high cost of catalysts [2].

关键词： corrosion seawater carbon

基于亚稳态叠加单元的高吞吐量真随机数发生器设计

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电子与信息学报 2024年第5期46卷 2289-2297页

作者：倪天明俞俊勇彭青松聂牧安徽工程大学集成电路学院芜湖241000 安徽省车载显示集成系统工程研究中心芜湖241000 触控显示材料与器件安徽省联合共建学科重点实验室芜湖241000 合肥工业大学微电子学院合肥230000

真随机数发生器(TRNg)作为一类重要的硬件安全原语,在密钥生成、初始化向量和协议中的身份认证等加密领域得到应用。为设计出高吞吐量的轻量级TRNg,该文研究了利用多路选择器(MUX)和异或门(XOR gate)的开关特性来产生亚稳态的方法,提出... 详细信息

真随机数发生器(TRNg)作为一类重要的硬件安全原语,在密钥生成、初始化向量和协议中的身份认证等加密领域得到应用。为设计出高吞吐量的轻量级TRNg,该文研究了利用多路选择器(MUX)和异或门(XOR gate)的开关特性来产生亚稳态的方法,提出一种基于亚稳态叠加单元(MS-cell)的TRNg(MS-TRNg)设计。它将MUX和异或门触发的亚稳态进行叠加,从而提高TRNg的熵。所提TRNg分别在Xilinx Virtex-7和Xilinx Artix-7 FPgA开发板中实现,无需后处理电路。与其他先进的TRNg相比,所提TRNg具有最高的吞吐量和极低的硬件开销,并且它所生成的随机序列通过了niST测试和一系列性能测试。

关键词：真随机数发生器熵源叠加亚稳态吞吐量

COM-b模型指导下的目标导向性干预在妊娠糖尿病患者中的应用

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中国医药导报 2024年第10期21卷 163-166页

作者：李妮倪爱华黄蓓南京医科大学附属南京医院南京市第一医院产科江苏南京210006 南京市雨花台区妇幼保健所孕产保健部江苏南京210012

目的探讨能力、机会、动机-行为(COM-b)模型指导下的目标导向性干预在妊娠糖尿病(gDM)患者中的应用效果。方法选择于2022年7月至2023年3月南京市第一医院建档产检的120例gDM孕妇为研究对象,通过随机数字表法将其分为对照组与观察组,各6... 详细信息

目的探讨能力、机会、动机-行为(COM-b)模型指导下的目标导向性干预在妊娠糖尿病(gDM)患者中的应用效果。方法选择于2022年7月至2023年3月南京市第一医院建档产检的120例gDM孕妇为研究对象,通过随机数字表法将其分为对照组与观察组,各60例。对照组接受常规干预,观察组在对照组基础上应用COM-b模型指导下的目标导向性干预,两组均干预至完成分娩。比较干预前后健康行为、血糖控制情况。结果干预后,两组糖尿病自我管理行为量表评分均较干预前升高,且观察组高于对照组(Pb模型指导下的目标导向性干预可提高gDM患者健康行为,有助于血糖水平控制。

关键词：妊娠糖尿病目标导向性理论自我管理行为

补肾促卵冲剂治疗高泌乳素血症导致排卵障碍性不孕的临床研究

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中国中药杂志 2024年第8期49卷 2016-2022页

作者：马堃李佳妮刘晓倩中国中医科学院西苑医院北京100091 中华中医药学会北京100029

研究补肾促卵冲剂治疗高泌乳素血症导致不孕症的治疗作用及安全性。选择60例肾虚血瘀型高泌乳素血症导致不孕症患者,分为试验组(补肾促卵冲剂+甲磺酸溴隐亭片安慰剂)和对照组(甲磺酸溴隐亭片+补肾促卵冲剂安慰剂),观察排卵率、妊娠率、... 详细信息

研究补肾促卵冲剂治疗高泌乳素血症导致不孕症的治疗作用及安全性。选择60例肾虚血瘀型高泌乳素血症导致不孕症患者,分为试验组(补肾促卵冲剂+甲磺酸溴隐亭片安慰剂)和对照组(甲磺酸溴隐亭片+补肾促卵冲剂安慰剂),观察排卵率、妊娠率、血清性激素、基础体温(bbT)及中医证候积分。结果显示,试验组临床有效率90.00%,对照组临床有效率80.00%;试验组能够显著降低泌乳素(PRL)水平、增加妊娠率,在增加bbT双相比例、改善中医证候积分、提高排卵率方面优于对照组。结果表明,补肾促卵冲剂治疗高泌乳素血症导致排卵障碍性不孕症疗效确切,安全可靠。

关键词：高泌乳素血症不孕症排卵障碍性不孕补肾促卵冲剂

DDAH1 promotes neurogenesis and neural repair in cerebral ischemia

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Acta Pharmaceutica Sinica b 2024年第5期14卷 2097-2118页

作者： Qiming gao Pinfei ni Yilin Wang Peiyun Huo Xiaojie Zhang Sihan Wang Fuyao Xiao Yixuan Li Wei Feng Juntao Yuan Teng Zhang Qiang Li boyu Fan Yuhao Kan Zhirui Li Yimiao Qi Junfei Xing Zhenghong Yang Haixiao Cheng Xinran gao Xiaoyan Feng Ming Xue Yang Liu Yumin Luo Zhongbing Lu Yuming Zhao Department of Pharmacology School of Basic Medical SciencesCapital Medical UniversityBeijing 100069China Cerebrovascular Diseases Research Institute and Department of Neurology Xuanwu Hospital of Capital Medical UniversityBeijing 100053China State Key Laboratory for Structural Chemistry of Unstable and Stable Species Institute of ChemistryChinese Academy of SciencesBeijing 100190China College of Life Science University of Chinese Academy of SciencesBeijing 100049China Department of Laboratory Animal School of Basic Medical SciencesCapital Medical UniversityBeijing 100069China Department of Physiology and Pathophysiology School of Basic Medical SciencesCapital Medical UniversityBeijing 100069China

Choline acetyltransferase(ChAT)-positive neurons in neural stem cell(NSC)niches can evoke adult neurogenesis(AN)and restore impaired brain function after injury,such as acute ischemic stroke(AIS).However,the relevant mechanism by which ChAT+neurons develop in NSC niches is poorly *** RNA-seq analysis revealed that dimethylarginine dimethylaminohydrolase 1(DDAH1),a hydrolase for asymmetric Ng,Ng-dimethylarginine(ADMA),regulated genes responsible for the synthesis and transportation of acetylcholine(ACh)(Chat,Slc5a7 and Slc18a3)after stroke *** dual-luciferase reporter assay further suggested that DDAH1 controlled the activity of ChAT,possibly through hypoxia-inducible factor 1α(HIF-1α).KC7F2,an inhibitor of HIF-1α,abolished DDAH1-induced ChAT expression and suppressed *** expected,DDAH1 was clinically elevated in the blood of AIS patients and was positively correlated with AIS *** comparing the results among Ddah1 general knockout(KO)mice,transgenic(Tg)mice and wild-type(WT)mice,we discovered that DDAH1 upregulated the proliferation and neural differentiation of NSCs in the subgranular zone(SgZ)under ischemic *** a result,DDAH1 may promote cognitive and motor function recovery against stroke impairment,while these neuroprotective effects are dramatically suppressed by NSC conditional knockout of Ddah1 in mice.

关键词： DDAH1 Neurogenesis Neural repair ChAT HIF-1α ACh Stroke ADMA