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蠕虫预警技术研究与进展

计算机应用研究 2006年第10期23卷 14-16页

作者：谢丰孟庆发中国科学院计算技术研究所软件室

当前网络蠕虫对Internet构成重要威胁,如何防范蠕虫已经成为网络安全的重要课题。由于蠕虫传播速度快、规模大,因此必须在蠕虫传播初期就能发现并对其采取相应措施进行隔离。全面分析了蠕虫预警方面的最新研究进展,包括路由器级的蠕虫... 详细信息

当前网络蠕虫对Internet构成重要威胁,如何防范蠕虫已经成为网络安全的重要课题。由于蠕虫传播速度快、规模大,因此必须在蠕虫传播初期就能发现并对其采取相应措施进行隔离。全面分析了蠕虫预警方面的最新研究进展,包括路由器级的蠕虫检测、基于行为的蠕虫检测、蠕虫特征的自动提取,并对蠕虫的特点进行了总结,最后对未来蠕虫检测的可能方向进行了展望。

关键词：网络安全蠕虫预警技术

Spatial construction of ultrasmall Pt-decorated 3D spinel oxidemodified N-doped graphene nanoarchitectures as high-efficiency methanol oxidation electrocatalysts

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Rare Metals 2024年第1期43卷 186-197页

作者： Qi Zhang Min-Min Yan Wen-fa Du Chen-Yu Yin Jian Zhang Lu Yang Yun-qing Kang Hai-Yan He Hua-Jie Huang College of Mechanics and Materials Hohai UniversityNanjing 210098China New Energy Technology Engineering Lab of Jiangsu Province College of ScienceNanjing University of Posts&Telecommunications(NUPT)Nanjing 210023China International Center for Materials Nanoarchitectonics(WPIMANA) National Institute for Materials ScienceTsukuba 305-0044IbarakiJapan

Direct methanol fuel cell technology recently becomes the focus of both academic and engineering circles,which stimulates the exploitation and utilization of advanced electrode catalysts with high activity and long ***,we demonstrate a robust bottom-up approach to the spatial construction of three-dimensional(3D) spinel manganese-cobalt oxide-modified N-doped graphene nanoarchitectures decorated with ultrasmall Pt nanoparticles(Pt/MnCo_(2)O_(4)-NG) via a controllable selfassembly *** incorporation of MnCo_(2)O_(4)nanocrystals provides abundant hydroxyl sources to promote the oxidative removal of CO-like byproducts on Pt sites,while the existence of 3D porous N-doped graphene networks facilitates the transportation of both ions and electrons in the hybrid system,thus giving rise to remarkable synergetic coupling effects during the methanol oxidation ***,the optimized Pt/MnCo_(2)O_(4)-NG nano architecture expres ses exceptional electrocatalytic properties with a large electrochemically active surface area of 99.5 m^(2)·g^(-1),a high mass activity of1508.3 mA·mg^(-1),strong toxicity resistance and reliable long-term durability,which have obvious competitive advantages over those of conventional Pt/carbon black,Pt/carbon nano tube,Pt/graphene,and Pt/N-doped graphene catalysts with the same Pt usage.

关键词： Platinum MnCo_(2)O_(4) 3D graphene Electrocatalysts Methanol oxidation

SO_2和HF污染区抗污绿化植物的净化能力比较

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广西植物 1989年第4期9卷 357-363页

作者：郁梦德余清发中国科学院华南植物研究所

广东省肇庆市龟顶山原为风景区之一,有“龟顶松荫”的雅称,由于五十年代相继建造了化肥、钢铁等工厂,大气氟化物和二氧化硫污染严重,致使原有的松林逐渐毁灭,仅有一些小灌木和稀疏的草本植物。为恢复龟顶山的植被,1983年华南植物研究所... 详细信息

广东省肇庆市龟顶山原为风景区之一,有“龟顶松荫”的雅称,由于五十年代相继建造了化肥、钢铁等工厂,大气氟化物和二氧化硫污染严重,致使原有的松林逐渐毁灭,仅有一些小灌木和稀疏的草本植物。为恢复龟顶山的植被,1983年华南植物研究所与肇庆地区林业处组成抗污绿化试验研究小组,在污染严重的东南山坡进行引种试验,共引种了70种植物,到1987年7月止,存活的有58种。

关键词：污染区抗污植物净化能力

Regulated reaction pathway of CO_(2)photoreduction into CH_(4)by metal atom pair sites

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Rare Metals 2024年第9期43卷 4620-4627页

作者： Dong-Po He Guang-Bing Huang Jun Hu Yang Wu Xiao-Dong Li qing-Xia Chen Shan Zhu Wen-Sheng Yan Jun-fa Zhu Yang Pan Xing-Chen Jiao Key Laboratory of Synthetic and Biological Colloids Ministry of EducationSchool of Chemical and Material EngineeringJiangnan UniversityWuxi 214122China Hefei National Research Center for Physical Sciences at Microscale National Synchrotron Radiation LaboratoryUniversity of Science and Technology of ChinaHefei 230026China Max Planck Institute of Microstructure Physics Weinberg 206120 HalleGermany State Grid Anhui Electric Power Research Institute Hefei 230601China

The carbon dioxide(CO_(2))reduction process involves complex protonation,making the resulting product often *** achieve the desired product,it is crucial to manipulate the reaction ***,we build the metal atom pair sites for selective CO_(2)photoreduction into *** a prototype,Ni atom pair sites loaded on the Mo S_(2)nanosheets were synthesized and verified by highresolution transmission electron microscopy(HRTEM),X-ray photoelectron spectroscopy(XPS)and X-rayabsorption near edge structure spectra(XANES).In-situ Fourier transform infrared spectroscopy(FTIR)monitors the*CHO group,a crucial intermediate in CH_(4)production,during CO_(2)photoreduction on the Ni-Mo S_(2)nanosheets,whereas this monitoring is not observed for the Mo S_(2)***,theoretical calculations disclose that over the Ni-Mo S_(2)nanosheet slab,the formation energy of*CHO intermediates is determined to be lower(0.585 e V)than the desorption energy of*CO intermediates for CO production(0.64 e V),implying the higher selectivity of CH_(4)production.

关键词： steps dioxide desired

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城镇生活污水分散式处理的发展前景

地域研究与开发 2009年第5期28卷 77-79页

作者：侯怀恩赵风兰孟庆法河南省科学院地理研究所郑州4500052

生活污水分散式处理技术上可行,而且应用灵活,投资小,可逐步实施,尤其在资源回收利用方面优势突出,在未来城市环境建设方面有非常广阔的前景。但由于监管难度较大和自身存在的一些不足,其应用受到限制。加大研发力度,进一步降低成本和... 详细信息

生活污水分散式处理技术上可行,而且应用灵活,投资小,可逐步实施,尤其在资源回收利用方面优势突出,在未来城市环境建设方面有非常广阔的前景。但由于监管难度较大和自身存在的一些不足,其应用受到限制。加大研发力度,进一步降低成本和提高处理效果,并以达标排放或循环利用为前提,不断改进管理和运行机制,可使其在处理城市生活污水方面发挥重要作用。

关键词：城镇生活污水分散式处理

Multi-surrogate framework with an adaptive selection mechanism for production optimization

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Petroleum Science 2024年第1期21卷 366-383页

作者： Jia-Lin Wang Li-Ming Zhang Kai Zhang Jian Wang Jian-Ping Zhou Wen-Feng Peng fa-Liang Yin Chao Zhong Xia Yan Pi-Yang Liu Hua-qing Zhang Yong-Fei Yang Hai Sun School of Petroleum Engineering China University of Petroleum(East China)Qingdao266580ShandongChina qingdao University of Technology Qingdao266580ShandongChina College of Science China University of PetroleumQingdao266580ShandongChina Zepu Oil and Gas Development Department PetroChina Tarim Oilfield CompanyKorla841000XinjiangChina Hainan Branch of CNOOC Ltd Haikou70311HainanChina

Data-driven surrogate models that assist with efficient evolutionary algorithms to find the optimal development scheme have been widely used to solve reservoir production optimization ***,existing research suggests that the effectiveness of a surrogate model can vary depending on the complexity of the design problem.A surrogate model that has demonstrated success in one scenario may not perform as well in *** the absence of prior knowledge,finding a promising surrogate model that performs well for an unknown reservoir is ***,the optimization process often relies on a single evolutionary algorithm,which can yield varying results across different *** address these limitations,this paper introduces a novel approach called the multi-surrogate framework with an adaptive selection mechanism(MSfaSM)to tackle production optimization *** consists of two *** the first stage,a reduced-dimensional broad learning system(BLS)is used to adaptively select the evolutionary algorithm with the best performance during the current optimization *** the second stage,the multi-objective algorithm,non-dominated sorting genetic algorithm II(NSGA-II),is used as an optimizer to find a set of Pareto solutions with good performance on multiple surrogate models.A novel optimal point criterion is utilized in this stage to select the Pareto solutions,thereby obtaining the desired development schemes without increasing the computational load of the numerical *** two stages are combined using sequential transfer *** the two most important perspectives of an evolutionary algorithm and a surrogate model,the proposed method improves adaptability to optimization problems of various reservoir *** verify the effectiveness of the proposed method,four 100-dimensional benchmark functions and two reservoir models are tested,and the results are compared with those obtained by six other surrogate-model-based *** res

关键词： Production optimization Multi-surrogate models Multi-evolutionary algorithms Dimension reduction Broad learning system

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河南植物区系分布新记录

河南师范大学学报（自然科学版） 2012年第6期40卷 137-139页

作者：孟庆法刘志术朱长山河南省科学院地理研究所郑州450052 商城县林业技术推广站河南信阳465350 河南农业大学生命科学学院郑州450002

报道河南植物区系种子植物1新记录属(黄花稔属Sida L.),8新记录种和2新记录变种.

关键词：种子植物地理新分布河南省

Characteristics and origin of low-organicmatter carbonate source rocks in the Middle-Upper Ordovician, Tarim Basin, northwestern China

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Journal of Palaeogeography 2024年第3期13卷 594-619页

作者： Jun-qing Chen Fu-Jie Jiang Xiong-Qi Pang Hai-Jun Yang Kan-Yuan Shi Bo Pang Hong Pang Jian-fa Chen Zhuo-Heng Chen Xin-Gang Zhang Song Wu State Key Laboratory of Petroleum Resources and Engineering China University of Petroleum(Beijing)Beijing 102249China Basic Research Center for Energy Interdisciplinary College of ScienceChina University of Petroleum(Beijing)Beijing 102249China Beijing Key Laboratory of Optical Detection Technology for Oil and Gas China University of Petroleum(Beijing)Beijing 102249China College of Geosciences China University of Petroleum(Beijing)Beijing 102249China Research Institute of Petroleum Exploration and Development PetroChina Tarim Oilfield CompanyKorla 841000Xinjiang Uygur Autonomous RegionChina Geological Survey of Canada Natural Resources CanadaCalgary T2L 2A7Canada

The continually-discovered large volumes of marine hydrocarbons indicate a huge exploration potential within the carbonate rocks of Ordovician in the Tarim Basin,northwestern *** Middle-Upper Ordovician(O2+3)carbonate source rocks are at a highly mature *** rocks presently contain a low amount of total organic carbon(TOC_(pd)≤0.5%)(TOC_(pd) means the present-day TOC).A mass balance approach is used to identify the source rocks that have expelled *** characteristics and origin of hydrocarbon expulsion from low-TOC_(pd) source rocks are studied,which are significant for oil exploration in the *** results showed that a low-TOC_(pd) O2+3 source rock having expelled hydrocarbons was type I and had a very narrow oil *** a high rock maturity and a high original TOC(TOCo)value exceeding 1%,nearly 80%of the generated hydrocarbons were *** content of gammacerane and C28 steranes in the oil and source rock extracts were relatively lean,with a V-shaped distribution of regular steranes,suggesting a possible genetic relation between the low-TOC_(pd) source rocks and the marine oil in the Tabei *** planktonic algae or acritarchs were the main hydrocarbon parent materials,distributed in the subsiding platform-slope *** matter was preserved under reducing conditions,and source rocks were formed with a favorable kerogen type and a moderate hydrocarbon generation *** study illustrates the hydrocarbon expulsion of low TOC_(pd) source rocks in northern Tarim Basin,which is greatly significant for analyzing the genesis of marine crude oil in Tarim Basin,and evaluating the distribution of marine source *** research method is theoretically significant for oil and gas exploration in the same type of highlymature carbonate paleobasins.

关键词： Carbonate source rock Mass balance approach Present-day TOC Genesis mechanism Tarim Basin

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建始槭引种与栽培技术研究

河南农业科学 2014年第9期43卷 133-136页

作者：孟庆法何瑞珍王平格河南省科学院地理研究所河南郑州450052 河南农业大学林学院河南郑州450002 郑州市绿文广场管理中心河南郑州450002

建始槭（Acer henryi Pax）是我国特有的槭树科野生彩叶树种。为了使这种珍贵的树种资源尽早得到开发利用，在对该树种资源分布及原产地生境调查基础上，开展了生态适应性、种子发芽特性、苗木生长规律等研究。结果表明：建始槭具有耐... 详细信息

建始槭（Acer henryi Pax）是我国特有的槭树科野生彩叶树种。为了使这种珍贵的树种资源尽早得到开发利用，在对该树种资源分布及原产地生境调查基础上，开展了生态适应性、种子发芽特性、苗木生长规律等研究。结果表明：建始槭具有耐寒、抗高温、耐碱性土壤及喜光等特性。建始槭种子为浅休眠种子，干藏和沙藏均能发芽，但沙藏120 d的种子发芽快且整齐，发芽率高（89.6％）。建始槭1～5年生种子苗高生长量第2年和第3年最大，年净生长量分别为109.6 cm和123.3 cm，第4年后逐年下降；年内月生长表现为“慢－快－慢”的规律，生长高峰出现在6－8月。地径生长量第1年较小，第2－5年较快，均在1 cm以上；3～5年生苗月生长亦表现为“慢－快－慢”的规律，生长高峰出现在7－9月。表明在河南低海拔平原地区及省内外相似生态类型区进行建始槭引种栽培和应用是切实可行的。

关键词：建始槭引种栽培技术