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Catalytic Performance of Carbon Smoke over Ag-LSCF Composite Catalysts

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 30-34页

作者： GUO Guanlun HAN ming lu Shaomin YU Jing JU Hongling 无 Hubei Key Laboratory of Advanced Technology for Automotive Components&Hubei Collaborative Innovation Center for Automotive Components Technology Wuhan University of TechnologyWuhan 430070China College of Mechanical and Transportation Southwest Forestry UniversityKunming 650000China

To improve the catalytic performance of La_(0.6)Sr_(0.4)Co_(0.2)Fe_(0.8)O_(3)(LSCF)towards carbon soot,we utilized the impregnation method to incorporate Ag into the prepared LSCF *** conducted a series of characterization tests and evaluated the soot catalytic activity of the composite catalyst by comparing it with the LaCoO_(3) group,LaFeO_(3) group,and catalyst-free *** results indicate that the Ag-LSCF composite catalyst exhibits the highest soot catalytic activity,with the characteristic temperature values of 376.3,431.1,and 473.9℃at 10%,50%,and 90%carbon soot conversion,*** values are 24.8,20.2,and 23.1℃lower than those of the LSCF *** also shows that LSCF can improve the catalytic activity of soot after compounding with Ag,and reflects the necessity of using catalysts in soot combustion *** characterization and BET test show that Ag-LSCF has more abundant surface-adsorbed oxygen species,larger specific surface area and pore volume than LSCF,which also proves that Ag-LSCF has higher soot catalytic activity.

关键词： metallic composites carbon smoke oxidation perovskite catalyst soot

The P_(5)-saturation Game

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Acta Mathematicae Applicatae Sinica 2025年第1期41卷 295-304页

作者： Zhen HE Mei lu School of Mathematics and Statistics Beijing Jiaotong UniversityBeijing 100044China Department of Mathematical Sciences Tsinghua UniversityBeijing 100084China

Let F,G and H be three graphs with G■*** call G an F-saturated graph relative to H,if there is no copy of F in G but there is a copy of F in G+e for any e∈E(H)\E(G).The F-saturation game on host graph H consists of two players,named Max and Min,who alternately add edges of H to G such that each chosen edge avoids creating a copy of F in G,and the players continue to choose edges until G becomes F-saturated relative to *** wishes to maximize the length of the game,while Min wishes to minimize the *** sat_(g)(F,H)(***_(g)'(F,H))denote the number of edges chosen when Max(*** Min)starts the game and both players play *** this article,we show that sat_(g)(P_(5),K_(n))=sat_(g)'(P_(5),K_(n))=n+2 for n≥15,and satg(P_(5),K_(m,n)),sat_(g)'(P_(5),K_(m,n))lie in{m+n-[m+2/4];m+n-[m-3/4]}if n≥5/2m and m≥4,respectively.

关键词： saturation number saturation game host graph

FPN算法在视觉感知机器人抓取控制的应用研究

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机械设计与制造 2024年第4期398卷 303-307,313页

作者：王利祥郭向伟卢明星河南护理职业学院公共学科部河南安阳455000 河南理工大学电气工程与自动化学院河南焦作454000

针对视觉感知机器人对物体抓取的准确性控制,在抓取姿势估计基础上使用密集连接的特征金字塔网络(FPN)作为特征提取器,将语义更强的高级特征图与分辨率更高的低级特征图融合,将机器人物体抓取过程分为两个阶段,第一个阶段生成待抓取区域... 详细信息

针对视觉感知机器人对物体抓取的准确性控制,在抓取姿势估计基础上使用密集连接的特征金字塔网络(FPN)作为特征提取器,将语义更强的高级特征图与分辨率更高的低级特征图融合,将机器人物体抓取过程分为两个阶段,第一个阶段生成待抓取区域,第二阶段对抓取区域进行细化以预测抓取姿势。模型在Cornell抓取数据集和Jacquard数据集上训练,验证了所提算法在抓取姿势估计的有效性。设计了两种不同真实场景的物体抓取控制实验,结果表明所提模型能有效提高机器人抓取各种不同尺寸物体的能力。

关键词：视觉机器人抓取姿势 FPN 特征图融合

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氮磷钾肥用量对紫云英产量效应的研究

中国生态农业学报 2009年第6期17卷 1094-1098页

作者：苏伟鲁剑巍刘威曹卫东鲁明星华中农业大学资源与环境学院武汉430070 中国农业科学院农业资源与区划研究所北京100081 湖北省土壤肥料工作站武汉430070

采用"3414"肥料效应试验设计方案对紫云英氮、磷、钾肥施用效应及养分的交互作用进行了研究,结果表明:与不施肥处理(CK)相比,13个施肥处理紫云英鲜草平均增产21.1t·hm-2,平均产量为不施肥处理的2.35倍;分别固定磷(P2O560kg·hm-2)、钾(... 详细信息

采用"3414"肥料效应试验设计方案对紫云英氮、磷、钾肥施用效应及养分的交互作用进行了研究,结果表明:与不施肥处理(CK)相比,13个施肥处理紫云英鲜草平均增产21.1t·hm-2,平均产量为不施肥处理的2.35倍;分别固定磷(P2O560kg·hm-2)、钾(K2O60kg·hm-2)肥,氮(N75kg·hm-2)、钾(K2O60kg·hm-2)肥和氮(N75kg·hm-2)、磷(P2O560kg·hm-2)肥用量,在施N0～112.5kg·hm-2、P2O50～90kg·hm-2和K2O0～90kg·hm-2范围内,紫云英产量随相应肥料用量的增加而显著提高,N、P、K各养分施用的最高增产率分别为65.0%、27.8%和44.5%;从养分效率看,中量水平的氮(N75.0kg·hm-2)、磷(P2O560kg·hm-2)和低量水平的钾(K2O30kg·hm-2)增产效果最好;氮、磷、钾肥之间存在一定的交互作用,互相影响肥效的发挥,中量水平的养分用量(N75.0kg·hm-2、P2O560kg·hm-2和K2O60kg·hm-2)有利于各养分效果的发挥。结果说明,施肥对紫云英增产效果明显,氮、磷、钾肥用量和配比是影响紫云英产量的重要因素。

关键词：紫云英 “3414”肥效试验设计施肥效应肥料交互作用

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大螟热激蛋白83基因克隆及序列分析

应用昆虫学报 2014年第5期51卷 1246-1254页

作者：孙猛陆明星汤小天杜予州扬州大学园艺与植物保护学院扬州225009

【目的】近年来,大螟Sesamia inferens(Walker)对水稻的为害逐渐加重并成为水稻的重要害虫之一。HSP83家族作为分子伴侣参与生物生长发育并对外界刺激产生响应,对生物功能蛋白质的正确折叠及胁迫信号传递有着重要意义。本研究旨在克隆大... 详细信息

【目的】近年来,大螟Sesamia inferens(Walker)对水稻的为害逐渐加重并成为水稻的重要害虫之一。HSP83家族作为分子伴侣参与生物生长发育并对外界刺激产生响应,对生物功能蛋白质的正确折叠及胁迫信号传递有着重要意义。本研究旨在克隆大螟HSP90家族HSP83基因的c DNA及基因组全长序列,分析其基本特性。【方法】应用RT-PCR及RACE技术从大螟中克隆HSP83基因的c DNA序列;获取基因组序列,进行基因组验证,并与c DNA序列比较分析其有无内含子;进行系统发育分析。【结果】大螟HSP83基因被命名为Sihsp83(Gen Bank登录号:KM077137),长度为2 496 bp,开放阅读框长2 154 bp,编码717个氨基酸,推测分子量为82.6 ku。该基因编码的氨基酸序列中含有5个HSP90家族保守序列,在C-末端存在细胞质定位信号。大螟HSP83基因组序列长度为2 218 bp(Gen Bank登录号:KM077138),不含内含子。在系统发育树中,大螟HSP83与其他夜蛾科昆虫的HSP90家族聚为一支。【结论】获得的大螟HSP83基因是HSP90基因家族成员;大螟的HSP83是细胞质热激蛋白,具有很高的保守性。

关键词：大螟 HSP83 基因克隆序列分析

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大螟HSC70基因克隆及表达模式分析

昆虫学报 2014年第7期57卷 787-797页

作者：孙猛陆明星汤小天杜予州扬州大学园艺与植物保护学院江苏扬州225009

【目的】近年来,大螟Sesamia inferens(Walker)对水稻的为害逐渐加重并成为水稻的重要害虫之一。随着全球气候变暖,大螟的分布区域也在逐渐向北延伸。HSP70家族作为分子伴侣参与生物生长发育并对外界刺激产生响应,对生物功能蛋白质的正... 详细信息

【目的】近年来,大螟Sesamia inferens(Walker)对水稻的为害逐渐加重并成为水稻的重要害虫之一。随着全球气候变暖,大螟的分布区域也在逐渐向北延伸。HSP70家族作为分子伴侣参与生物生长发育并对外界刺激产生响应,对生物功能蛋白质的正确折叠及其转运有着重要意义。本研究旨在明确HSP70家族HSC70基因在大螟不同组织、不同发育阶段以及低温胁迫下的表达差异,初步探讨大螟对环境适应的分子机理。【方法】应用RT-PCR及RACE技术从大螟5龄幼虫中克隆得到HSC70基因;进行基因组验证,得到其基因组序列,分析内含子的位置及大小;应用实时定量PCR技术分析大螟HSC70基因的表达模式。【结果】大螟HSC70基因长2 160 bp,命名为Sihsc70(GenBank登录号:KJ639908),开放阅读框长1 962 bp,编码653个氨基酸,推测分子量为71.6 kDa。其氨基酸序列中含有3个HSP70家族保守序列,在C-末端存在细胞质定位信号,说明大螟HSC70是细胞质热激蛋白家族成员。大螟HSC70基因组序列长度为3 522 bp(GenBank登录号:KJ639909),含有2个内含子,长度分别为685 bp(位于编码区上游)和803 bp(位于编码区内)。在大螟5龄幼虫的不同组织中Sihsc70表达量差异不显著(P>0.05),其中在中肠、后肠和体壁中的表达量较高,在唾腺中的表达量最低;在大螟不同发育阶段中,Sihsc70的表达量在雌成虫最低,较高的3个阶段依次为卵、2龄幼虫和5龄幼虫,分别为雌成虫表达量的6.33,3.21和1.86倍;相对于对照组(27℃),低温胁迫对大螟5龄幼虫HSC70基因表达的影响差异不显著(P>0.05)。【结论】结果说明,大螟HSC70基因在不同发育阶段和幼虫不同组织中具有不同的表达水平,而低温胁迫不能诱导该基因大量表达。

关键词：大螟 HSC70 克隆表达模式荧光定量PCR

An embedded electron current layer observed at the edge of the plasma sheet in the Earth’s magnetotail

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Earth and Planetary Physics 2025年第1期9卷 148-158页

作者： ChenChen Zhan RongSheng Wang Quanming lu San lu XinMin Li Deep Space Exploration Laboratory/School of Earth and Space Sciences University of Science and Technology of ChinaHefei 230026China Chinese Academy of Sciences(CAS)Center for Excellence in Comparative Planetology/CAS Key Laboratory of Geospace Environment/Anhui Mengcheng National Geophysical Observatory University of Science and Technology of ChinaHefei 230026China Collaborative Innovation Center of Astronautical Science and Technology Harbin 150001China

The formation of an embedded electron current sheet within the magnetotail plasma sheet has been poorly *** this article,we present an electron current layer detected at the edge of the magnetotail plasma *** ions were demagnetized inside the electron current layer,but the electrons were still frozen in with the magnetic field ***,this decoupling of ions and electrons gave rise to a strong Hall electric field,which could be the reason for the formation of the embedded thin current *** magnetized electrons,the absence of the nongyrotropic electron distribution,and negligible energy dissipation in the layer indicate that magnetic reconnection had not been triggered within the embedded thin current *** highly asymmetric plasma on the two sides of the current layer and low magnetic shear across it could suppress magnetic *** observations indicate that the embedded electric current layer,probably generated by the Hall electric field,even down to electron scale,is not a sufficient condition for magnetic reconnection.

关键词： magnetotail plasma sheet magnetic reconnection

Influence of gut bacteria on type 2 diabetes:Mechanisms and therapeutic strategy

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World Journal of Diabetes 2025年第1期16卷 27-33页

作者： Xue Wen lu-ming Qi Kui Zhao College of Health and Rehabilitation Chengdu University of Traditional Chinese MedicineChengdu 610000Sichuan ProvinceChina College of Materials and Chemical Engineering Southwest Forestry UniversityKunming 650224Yunnan ProvinceChina

The onset and progression of type 2 diabetes mellitus(T2DM)are strongly associated with imbalances in gut bacteria,making the gut microbiome a new potential therapeutic *** commentary examines the recent publication in World Journal of *** article explores the association between T2DM and gut microbiota,with a focus on the pathophysiological changes related to *** proposes innovative microbiome-targeted therapeutic strategies and evaluates the challenges and future directions of such *** editorial summarizes the key points of their discussion of the role of the gut microbiome in T2DM and elaborates on the influence of specific gut microbial species on the disease through the host–microbiota metabolic *** provides new insights for future research on gut-microbiota-based interventions for T2DM.

关键词： Type 2 diabetes Intestinal microbiome Intestinal axis Biological pathways Treatment Short-chain fatty acids

Understanding the local structure and thermophysical behavior of Mg-La liquid alloys via machine learning potential

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 439-449页

作者： Jia Zhao Taixi Feng Guimin lu National Engineering Research Center for Integrated Utilization of Salt Lake Resource East China University of Science and TechnologyShanghai 200237China Joint International Laboratory for Potassium and Lithium Strategic Resources East China University of Science and TechnologyShanghai 200237China

The local structure and thermophysical behavior of Mg-La liquid alloys were in-depth understood using deep potential molecular dynamic(DPMD) simulation driven via machine learning to promote the development of Mg-La alloys. The robustness of the trained deep potential(DP) model was thoroughly evaluated through several aspects, including root-mean-square errors(RMSEs), energy and force data, and structural information comparison results;the results indicate the carefully trained DP model is reliable. The component and temperature dependence of the local structure in the Mg-La liquid alloy was analyzed. The effect of Mg content in the system on the first coordination shell of the atomic pairs is the same as that of temperature. The pre-peak demonstrated in the structure factor indicates the presence of a medium-range ordered structure in the Mg-La liquid alloy, which is particularly pronounced in the 80at% Mg system and disappears at elevated temperatures. The density, self-diffusion coefficient, and shear viscosity for the Mg-La liquid alloy were predicted via DPMD simulation, the evolution patterns with Mg content and temperature were subsequently discussed, and a database was established accordingly. Finally, the mixing enthalpy and elemental activity of the Mg-La liquid alloy at 1200 K were reliably evaluated,which provides new guidance for related studies.

关键词： magnesium-lanthanum liquid alloys local structure macroscopic properties thermodynamic behavior deep potential mo-lecular dynamic simulation