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顾及城郊农田生态服务价值的中心城区生态安全网络重构

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生态学报 2024年第13期44卷 5801-5815页

作者：彭李智胡石元张金亭周恒石庆翠吴秀武汉大学资源与环境科学学院武汉430072 武汉科技大学城市建设学院武汉430065 德克萨斯州立大学地理与环境系美国德州圣马科斯78666

针对中心城区日益凸显的农业、生态、城镇三类空间冲突问题,借鉴田园城市理论,创新性地提出一种利用城郊高生态价值农田细化城市生态安全网络,构建“三生”空间协调有序的国土空间格局的方法。利用防城港市遥感影像、国土调查和社会经... 详细信息

针对中心城区日益凸显的农业、生态、城镇三类空间冲突问题,借鉴田园城市理论,创新性地提出一种利用城郊高生态价值农田细化城市生态安全网络,构建“三生”空间协调有序的国土空间格局的方法。利用防城港市遥感影像、国土调查和社会经济数据,在城郊耕地综合评价的基础上,采用评价结果修正的当量因子法评估其农田生态价值。进一步利用InVEST、MSPA及MCR模型初步构建市域生态安全网络,再将高生态价值农田作为临时生态节点完成网络重构,并进行对比分析。以重构的新网络指导中心城区的规划分区优化,并对市域和中心城区两级生态网络要素的空间管控规则及联合管理机制进行了探索。结果表明:(1)防城港市区单位面积农田生态价值为35540元/hm^(2),高生态价值农田较均匀的环城分部。(2)重构后的网络新增34个临时节点和51条绿带,延长48.425 km,增加808.89 hm^(2)生态源。(3)新网络能有效引导中心城区形成圈层发展结构,较原网络在连通性、有效性、稳定性上均有所提升。研究结果为注重协调发展的国土空间规划背景下区域空间格局优化提供了新的思路。

关键词：耕地综合评价当量因子法生态安全网络重构田园城市理论临时生态节点

Incorporation of Dihydroartemisinin into Memantine Through a Propriate Spacer to Make Hybrid with Enhanced Effects to Protect PC12 Cells from Corticosterone-caused Impairments

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Chemical Research in Chinese Universities 2017年第4期33卷 611-622页

作者： ZHANG Lei ZHOU Fan ZHANG Laitao peng lizhi GUO Cuiping LUO Cheng CHEN Heru Institute of Traditional Chinese Medicine and Natural Products College of Pharmacy Jinan University Guangzhou 510632 P. R. China State key Laboratory of Drug Research Shanghai Institute of Materia Medica Chinese Academy of Sciences Shanghai 201203 P. R. China Cruangdong Province Key Laboratory of Pharmacodynamic Constituents ofTCA/I and New Drugs Research Jinan University Guangzhou 510632 P. R. China

Ten memantine（Mema）-dihydroartemisinin（DHA） ligands were designed and synthesized. Three types of isomers including α, β, and a defined y isomer were found in each intermediates（1a--1e）. Type γ isomer was firstly reported here and confirmed as a less stable eclipsed conformation. The bonding of Mema with DHA through different carbon chains generally makes the new entities more cytotoxic than either Mema or artemisinm（Arte）. The β Mema/DHA ligands are a little bit more cytotoxic than a ligands. By applying corticosterone（Cort）-impaired PC12 cells models, it was found that Mema and those ligands with more than 3 carbon chains showed weak or no neuroprotective activities against the insults. However, two ligands, 2a（β） and 2b（β） showed better effects than either Arte or their combination（Mema/Arte in 1：1 molar ratio） at a dose of 5 μmol/L. Furthermore, ligands 2a（β）, 2b（β） and 2c（β） were confn-med as mild N-methyl-D-aspartate（NMDA） antagonists, and their corresponding α isomers are weak NMDA antagonists. All the data indicate that the bonding of Mema/DHA in compacted β conformation mode results in enhanced effects against Cort-induced insults in PC12 ceils and might reverse memantine as an anti-depression NMDA antagonist.

关键词： Artemisinm Memantine Neuroprotection N-Methyl-D-aspartate(NMDA) receptor Depression

How Many Packets Are Most Effective for Early Stage Traffic Identification： An Experimental Study

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China Communications 2014年第9期11卷 183-193页

作者： peng lizhi YANG Bo CHEN Yuehui WU Tong Shandong Provincial Key Laboratory for Network Based Intelligent Computing University of Jinan Jinan 250022 China School of Computer and Information Technology Beijing Jiaotong University Beijing 100044 China

Accurately identifying network traffics at the early stage is very important for the application of traffic *** years,more and more research works have tried to build effective machine learning models to identify traffics with the few packets at the early ***,a basic and important problem is still unresolved,that is how many packets are most effective in early stage traffic *** this paper,we try to resolve this problem using experimental *** firstly extract the packet size of the first 2-10 packets of 3 traffic data *** then execute crossover identification experiments with different numbers of packets using 11 well-known machine learning ***,statistical tests are applied to find out which number is the best performed *** experimental results show that 5-7are the best packet numbers for early stage traffic identification.

关键词： feature extraction early stagetraffic classification machine learning

Traffic Labeller： Collecting Internet Traffic Samples with Accurate Application Information

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China Communications 2014年第1期11卷 69-78页

作者： peng lizhi ZHANG Hongli YANG Bo CHEN Yuehui WU Tong School of Computer Science and Technology Harbin Institute of Technology Harbin 150002 China Provincial Key Laboratory for Network Based Intelligent Computing University of Jinan Jinan 250022 China School of Computer and Information Technology Beijing Jiaotong University Beijing 100044 China

Traffic classification research has been suffering from a trouble of collecting accurate samples with ground truth.A model named Traffic Labeller(TL) is proposed to solve this *** system captures all user socket calls and their corresponding application process information in the user mode on a Windows *** a sending data call has been captured,its 5-tuple {source IP,destination IP,source port,destination port and transport layer protocol},associated with its application information,is sent to an intermediate NDIS driver in the kernel *** the intermediate driver writes application type information on TOS field of the IP packets which match the *** this way,each IP packet sent from the Windows host carries their application ***,traffic samples collected on the network have been labelled with the accurate application information and can be used for training effective traffic classification models.

关键词： network measurement traffic cla- ssification data collection ground truth

Contribution to the knowledge of the ladybird beetle genus Diomus Mulsant(Coleoptera: Coccinellidae), with description of a new species from China

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Zoological Systematics 2024年第4期 320-330页

作者： Keke Bi Xinyue Liang Feng peng lizhi Huo Xiaosheng Chen Guangzhou Collaborative Innovation Center on Science-Tech of Ecology and Landscape Guangzhou Institute of Forestry and Landscape Architecture Department of Forest Protection College of Forestry and Landscape Architecture South China Agricultural University Engineering Research Center of Biological Control Ministry of Education

The genus Diomus Mulsant, 1850(Coleoptera: Coccinellidae: Diomini) from China is herein revised. Five species of Diomus are occurring in the Chinese fauna to date, including a new species from the Dafushan Mountains Forest Park, Guangzhou, Guangdong, namely *** Bi, peng & Chen, sp. nov. Nomenclatural history, diagnosis, illustrations and distribution were provided for each species. A key to the native species of Diomus from China is also presented.

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百年中文薪火相传--以新见北平辅仁大学国文系毕业论文为中心

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北京师范大学学报（社会科学版） 2022年第5期 69-76页

作者：彭利芝首都经济贸易大学文化与传播学院北京100070

中文学科是北京师范大学历史最悠久的学科之一,它伴随京师大学堂师范馆而生,兼容国立北平师范大学、国立北平女子师范大学、私立北平辅仁大学三校中文学科之优势,厚积薄发。现藏于首都经贸大学图书馆的辅仁大学国文系毕业论文保存了民... 详细信息

中文学科是北京师范大学历史最悠久的学科之一,它伴随京师大学堂师范馆而生,兼容国立北平师范大学、国立北平女子师范大学、私立北平辅仁大学三校中文学科之优势,厚积薄发。现藏于首都经贸大学图书馆的辅仁大学国文系毕业论文保存了民国时期中文学科毕业论文的典型特征,为梳理北师大中文学科的学术文脉提供了第一手资料,也为研究余嘉锡、孙楷第、顾随、孙人和等中文先贤名师提供了独特的视角。

关键词：北师大辅仁大学中文学科先贤名师

Realizing methanol synthesis from CO and water via the synergistic effect of Cu^(0)/Cu^(+)over Cu/ZrO_(2) catalyst

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Journal of Energy Chemistry 2024年第6期93卷 126-134,I0004页

作者： Yuan Fang Fan Wang Yang Chen Qian Lv Kun Jiang Hua Yang Huibo Zhao peng Wang Yuyan Gan lizhi Wu Yu Tang Xinhua Gao Li Tan Institute of Molecular Catalysis and In Situ/Operando Studies Fujian Key Laboratory of Electrochemical Energy Storage MaterialsState Key Laboratory of Photocatalysis on Energy and EnvironmentCollege of ChemistryFuzhou UniversityFuzhou 350108FujianChina Leibniz-Institut für Katalyse e.V.an der Universität Rostock Albert-Einstein Strasse 9118059 RostockGermany Department of Chemistry Tsinghua UniversityBeijing 100084China State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering College of Chemistry and Chemical EngineeringNingxia UniversityYinchuan 750021Ningxi1China

The optimizing utilization of ca rbon resources has drawn wide attention all over the world,while exploiting the high-efficiency catalytic routes remains a ***,a direct methanol synthesis route is realized from pure CO and H_(2)O over 10%Cu/t-ZrO_(2) catalyst,where the time yield of methanol is144.43 mmol mol_(Cu)^(-1)h^(-1)and the methanol selectivity in hydrocarbons is 100%,The Cu species highly dispersed in the t-ZrO_(2) support lead parts of them in the cationic *** Cu^(+)sites contribute to the dissociation of H_(2)O,providing the H*source for methanol synthesis,while the formed Cu^(0) sites promote the absorption and transfer of H*during the ***,the H_(2)O is even a better H resource than H_(2) due to its better dissociation effectivity in this catalytic *** present work offers a new approach for methanol synthesis from CO and new insight into the process of supplying H donor.

关键词： H_(2)O CO Methanol Cu-based catalysts t-ZrO_(2)

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史学上之正统论与明清历史小说

北京大学学报（哲学社会科学版） 2016年第4期53卷 107-115页

作者：彭利芝首都经济贸易大学文化与传播学院北京100070

史学上之正统论对明清历史小说的创作影响深远。正统论既影响了明清历史小说的整体架构,也影响了具体作品的思想倾向。具体而言,史家所推崇的汉族正统王朝——汉唐宋明成为历史小说创作的重点,"严华夷之分"观念导致了清中叶以前少数民... 详细信息

史学上之正统论对明清历史小说的创作影响深远。正统论既影响了明清历史小说的整体架构,也影响了具体作品的思想倾向。具体而言,史家所推崇的汉族正统王朝——汉唐宋明成为历史小说创作的重点,"严华夷之分"观念导致了清中叶以前少数民族王朝史小说的缺失。当然,明清历史小说中的正统论也具有其独特性,它较之史学观念更具有天命与道德色彩。

关键词：史学正统论明清历史小说

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易代小说“分合论”发微

学术交流 2009年第7期 181-185页

作者：彭利芝首都经济贸易大学人文学院北京100070

在我国数千年历史的发展进程中,国家分合,王朝兴衰,社会治乱,交替相循。易代小说描述了历史上一次次的分分合合,进而将历史的发展进程直接概括为分合论,并且认为分合的根源在于天道循环。这种分合、治乱的循环思想体现了小说家对整个中... 详细信息

在我国数千年历史的发展进程中,国家分合,王朝兴衰,社会治乱,交替相循。易代小说描述了历史上一次次的分分合合,进而将历史的发展进程直接概括为分合论,并且认为分合的根源在于天道循环。这种分合、治乱的循环思想体现了小说家对整个中国历史进程的总体概括与总结,与史学上之历史循环论息息相关。虽然小说家无不以分合大势来观照易代史,但分合大势的背后凸现的却是小说家对"分"的厌倦对"合"的思慕,体现了小说家对和平统一的衷心向往。

关键词：易代小说分合论《三国演义》