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On the Classification of Arc-transitive Circulant Digraphs of Order Odd-Prime-Squared

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Acta Mathematica Sinica,English Series 2005年第5期21卷 1131-1136页

作者： xue Wen li LMAM & School of Mathematical Sciences Peking University Beijing 100871 P. R. China Department of Mathematics Tangshan Teacher's College Tangshan 063000 P. R. China

A Cayley graph F = Cay（G, S） of a group G with respect to S is called a circulant digraph of order pk if G is a cyclic group of the same order. Investigated in this paper are the normality conditions for arc-transitive circulant （di）graphs of order p^2 and the classification of all such graphs. It is proved that any connected arc-transitive circulant digraph of order p^2 is, up to a graph isomorphism, either Kp2, G（p^2,r）, or G（p,r）[pK1], where r｜p- 1.

关键词： Cayley graph Normal Cayley graph Circulant digraph

Institutional Correction of Mediation under the View of Transformation:Taking the People’s Mediation as an Example

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学术界 2019年第12期 185-193页

作者： li ao Jin Shen School of Law Wuhan University

Under the dual driven forces of soaring disputes and national policy,the dispute resolution ecosystem of China showed the mediation centralism,and the revival of mediation presented the characteristics of adversary *** order to comply with the modern rule of law system,the traditional mediation is incorporated into the modern legal system through the three-level transformation of"discipline of laws","introduction of procedures"and"specialized cultivation",which was promoted by the popularity of social governance,the input of the idea of diversified solutions and the pragmatic impetus under the pressure of social *** mediation movement has the characteristics of both consciousness of pragmatism and the initial legalization,but will also face the mediation *** remodeling of mediation must be rooted in systematization and *** development trend includes expansion of fields,symbiosis of autonomy and specialization,and mandatory introduction.

关键词： mediation people's mediation transformation correction improvement

Joint Multi-Domain Channel Estimation Based on Sparse Bayesian Learning for OTFS System

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China Communications 2023年第1期20卷 14-23页

作者： Yong liao xue li School of Microelectronics and Communication Engineering Chongqing UniversityChongqing 400044China

Since orthogonal time-frequency space(OTFS)can effectively handle the problems caused by Doppler effect in high-mobility environment,it has gradually become a promising candidate for modulation scheme in the next generation of mobile ***,the inter-Doppler interference(IDI)problem caused by fractional Doppler poses great challenges to channel *** avoid this problem,this paper proposes a joint time and delayDoppler(DD)domain based on sparse Bayesian learning(SBL)channel estimation ***,we derive the original channel response(OCR)from the time domain channel impulse response(CIR),which can reflect the channel variation during one OTFS *** with the traditional channel model,the OCR can avoid the IDI *** that,the dimension of OCR is reduced by using the basis expansion model(BEM)and the relationship between the time and DD domain channel model,so that we have turned the underdetermined problem into an overdetermined ***,in terms of sparsity of channel in delay domain,SBL algorithm is used to estimate the basis coefficients in the BEM without any priori information of *** simulation results show the effectiveness and superiority of the proposed channel estimation algorithm.

关键词： OTFS sparse Bayesian learning basis expansion model channel estimation

Spatiotemporal characteristics and influencing factors of ecosystem services in Central Asia

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Journal of Arid Land 2023年第1期15卷 1-19页

作者： YAN xue li Lanhai State Key Laboratory of Desert and Oasis Ecology Xinjiang Institute of Ecology and GeographyChinese Academy of SciencesUrumqi 830011China Ili Station for Watershed Ecosystem Research Chinese Academy of SciencesXinyuan 835800China CAS Research Centre for Ecology and Environment of Central Asia Urumqi 830011China Xinjiang Key Laboratory of Water Cycle and Utilization in Arid Zone Urumqi 830011China University of Chinese Academy of Sciences Beijing 100049China

Land use/land cover(LULC)change and climate change are two major factors affecting the provision of ecosystem services which are closely related to human ***,a clear understanding of the relationships between these two factors and ecosystem services in Central Asia is still *** study aimed to comprehensively assess ecosystem services in Central Asia and analyze how they are impacted by changes in LULC and *** spatiotemporal patterns of three ecosystem services during the period of 2000-2015,namely the net primary productivity(NPP),water yield,and soil retention,were quantified and mapped by the Carnegie-Ames-Stanford Approach(CASA)model,Integrated Valuation of Ecosystem Services and Tradeoffs(InVEST)model,and Revised Universal Soil Loss Equation(RUSLE).Scenarios were used to determine the relative importance and combined effect of LULC change and climate change on ecosystem ***,the relationships between climate factors(precipitation and temperature)and ecosystem services,as well as between LULC change and ecosystem services,were further *** results showed that the high values of ecosystem services appeared in the southeast of Central *** the six biomes(alpine forest region(AFR),alpine meadow region(AMR),typical steppe region(TSR),desert steppe region(DSR),desert region(DR),and lake region(LR)),the values of ecosystem services followed the order of AFR>AMR>TSR>DSR>DR>*** addition,the values of ecosystem services fluctuated during the period of 2000-2015,with the most significant decreases observed in the southeast mountainous area and northwest of Central *** change had a greater impact on the NPP,while climate change had a stronger influence on the water yield and soil *** combined LULC change and climate change exhibited a significant synergistic effect on ecosystem services in most of Central ***,ecosystem services were more strongly and positively correlated with precipitation

关键词： ecosystem services land use/land cover change climate change net primary productivity water yield soil retention Central Asia

Yield-density effects on growth and biomass partitioning in Leucaena leucocephala seedlings

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Journal of Forestry Research 2020年第1期31卷 175-184页

作者： Tongtong Zhou li xue College of Forestry and Landscape Architecture South China Agricultural University

Experiments were conducted to study the effects of density on growth and biomass partitioning of Leucaena leucocephala *** plantations with densities of 10,000,20,000,40,000,and 80,000 seedlings ha^-1 were evaluated only from 15 to 25 months after *** 15 months,crown height and width decreased with increasing *** height/dbh ratios increased with increasing *** increased with greater density according to the yield–density effect equation,which was evident for all *** increasing age,biomass division to branches and leaves increased,whereas partitioning to roots decreased in the 10,000 and 20,000 seedlings ha-1 *** to branches and leaves remained relatively steady,while partitioning to roots increased in the 40,000 and 80,000 seedlings ha^-1 *** division into stem and bark components remained relatively steady in all ***–density and organ yield–density curves shifted upward with increasing seedling age on a log–log graph throughout the experimental period.

关键词： Competition Leucaena leucocephala seedlings Yield–density effect Biomass partitioning

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阿卡维基转移酶的异源表达及转糖基作用

食品科学 2025年第2期46卷 81-88页

作者：薛正莲王雨晴李闯李丹丹朱司宝李翔飞安徽工程大学生物与食品工程学院安徽芜湖241000

为深入研究阿卡波糖合成途径中关键酶——阿卡维基转移酶(acarviosyltransferase,ATase)的结构性质和催化功能,从犹他游动放线菌Actinoplanes ***50基因组中扩增其编码基因acbD,并实现在Escherichia coli中的异源表达。生物信息学分析表... 详细信息

为深入研究阿卡波糖合成途径中关键酶——阿卡维基转移酶(acarviosyltransferase,ATase)的结构性质和催化功能,从犹他游动放线菌Actinoplanes ***50基因组中扩增其编码基因acbD,并实现在Escherichia coli中的异源表达。生物信息学分析表明acbD表达产物ATase的保守结构域与糖苷水解酶家族13的环糊精糖基转移酶高度相似,且存在信号肽和跨膜区。十二烷基硫酸钠-聚丙烯酰胺凝胶电泳检测结果显示,在去除信号肽的编码序列后,acbD的可溶性表达水平提高了22.4倍。重组ATase的最适催化温度和最适反应pH值分别为30℃和7.0。底物谱分析表明重组ATase催化D-水杨苷的活力最高,为82.85 U/mL,其次是L-山梨糖(63.75 U/mL),也是首次发现L-山梨糖可作为ATase的优良糖基供体。以上结果为进一步明确ATase的催化机制奠定了基础。

关键词：阿卡维基转移酶阿卡波糖异源表达转糖基作用酶学性质

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中国实用神经疾病杂志 2025年第1期28卷 47-52页

作者：李莉姜雪姜荣格李恳保定市第一中心医院河北保定071000 石家庄医学高等专科学校临床医学系河北石家庄050000

目的基于Toll样受体4(TLR4)核因子-κB(NF-κB)通路-神经相关因子探究依达拉奉对急性脑梗死(ACI)患者炎症反应与神经损伤的保护机制。方法选取2020-07—2023-07保定市第一中心医院收治的110例ACI患者,以随机数字表法分为观察组、对照组,... 详细信息

目的基于Toll样受体4(TLR4)核因子-κB(NF-κB)通路-神经相关因子探究依达拉奉对急性脑梗死(ACI)患者炎症反应与神经损伤的保护机制。方法选取2020-07—2023-07保定市第一中心医院收治的110例ACI患者,以随机数字表法分为观察组、对照组,各55例,对照组给予阿替普酶溶栓,观察组给予阿替普酶溶栓联合依达拉奉治疗。比较2组疗效、神经功能[美国国立卫生研究院卒中量表(NIHSS)评分、改良Rankin评分]、TLR4 NF-κB通路指标(TLR4、NF-κB)、神经损伤相关因子[神经元特异性烯醇化酶(NSE)、中枢神经特异性蛋白(S-100β)、脑源性神经营养因子(BDNF)]、TLR4 NF-κB通路相关炎症因子[白介素-1β(IL-1β)、超敏C反应蛋白(hs-CRP)、肿瘤坏死因子(TNF-α)、五聚素3(PTX3)、脂蛋白相关磷脂酶A2(Lp-PLA2)]。结果观察组总有效率96.36%,高于对照组的83.64%(P<0.05)。治疗1、2周观察组NIHSS评分、改良Rankin评分均低于对照组(P<0.05),观察组TLR4、NF-κB均低于对照组(P<0.05)。相较于治疗前,2组治疗1、2周后S-100β、NSE水平明显下降,BDNF水平明显升高,观察组S-100β、NSE水平均低于对照组,BDNF水平高于对照组(P<0.05)。相较于治疗前,2组治疗1、2周后IL-1β、hs-CRP、TNF-α、PTX3、Lp-PLA2水平均明显下降,观察组IL-1β、hs-CRP、TNF-α、PTX3、Lp-PLA2水平均低于对照组(P<0.05)。结论依达拉奉对ACI患者的疗效显著,有利于缓解炎症反应,改善神经损伤,其保护机制可能与TLR4 NF-κB通路调控神经损伤、炎症反应相关因子有关。

关键词：急性脑梗死 Toll样受体4 核因子-κB 依达拉奉 TLR4 NF-κB通路

Density functional theory investigation on selective adsorption of VOCs on borophene

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Chinese Chemical Letters 2021年第9期32卷 2803-2806页

作者： Wenlang li Quanguo Jiang Didi li Zhimin ao Taicheng Ana Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control Guangzhou Key Laboratory of Environmental Catalysis and Pollution ControlSchool of Environmental Science and EngineeringInstitute of Environmental Health and Pollution ControlGuangdong University of TechnologyGuangzhou 510006China College of Mechanics and Materials Hohai UniversityNanjing 210098China

In the field of volatile organic compounds(VOCs)pollution control,adsorption is one of the major control methods,and effective adsorbents are desired in this *** this work,the density functional theory(DFT)calculations are employed to investigate the adsorption of typical VOCs molecules on the two-dimensional material *** results demonstrate that both structure ofχBorophene;2D material;Volatile organic compounds(VOCs);Selective adsorption;Electronic structure andβ12 borophene can chemically adsorb ethylene and formaldehyde with forming chemical bonds and releasing large ***,other VOCs,including ethane,methanol,formic acid,methyl chloride,benzene and toluene,are physically adsorbed with weak *** analysis of density of states(DOS)reveals that the chemical adsorption changes the conductivity of borophenes,while the physical adsorption has no distinct effect on the ***,bothχ^(3)andβ_(12) borophene are appropriate adsorbents for selective adsorption of ethylene and formaldehyde,and they also have potential in gas sensor applications due to the obvious conductivity change during the adsorption.

关键词： Borophene 2D material Volatile organic compounds(VOCs) Selective adsorption Electronic structure

Overexpression of IbSINA5 Increases Cold Tolerance through a CBF SINA-COR Mediated Module in Sweet Potato

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Phyton-International Journal of Experimental Botany 2021年第3期90卷 761-772页

作者： Shiyang li xue-ao liu lizi Zhao Huiqing Huang Bei li Zhizhong Song Meixia liang Hongxia Zhang limin Wang Shenglin Zhou Shandong Technology and Business University Yantai264005China The Engineering Research Institute of Agriculture and Forestry Ludong UniversityYantai264025China School of life Sciences Ludong UniversityYantai264025China

Seven in absentia(SINA)family proteins play a central role in plant growth,development and resistance to abiotic ***,their biological function in plant response to cold stress is still largely *** this work,a seven in absentia gene IbSINA5 was isolated from sweet *** real-time polymerase chain reaction(qRT-PCR)analyses demonstrated that IbSINA5 was ubiquitously expressed in various tissues and organs of sweet potato,with a predominant expression in fibrous roots,and was remarkably induced by cold,drought and salt *** localization assays revealed that IbSINA5-GFP fusion protein was mainly localized in cytoplasm and *** of IbSINA5 in sweet potato led to dramatically improved resistance to cold stress in transgenic plants,which was associated with the up-regulated expression of IbCOR(cold-regulated)genes,increased proline production,and decreased malondialdehyde(MDA)and H2O2 accumulation in the leaves of transgenic ***,transient expression of IbCBF3,a C-repeat binding factor(CBF)gene,in the leaf protoplasts of wild type sweet potato plants up-regulated the expression of both IbSINA5 and IbCOR *** results suggest that IbSINA5 could function as a positive regulator in the cold signaling pathway through a CBF-SINA-COR mediated module in sweet potato,and have a great potential to be used as a candidate gene for the future breeding of new plant species with improved cold resistance.

关键词： Cold stress IbSINA5 seven in absentia sweet potato transgenic plant