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Towards IP geolocation with intermediate routers based on topology discovery

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Cybersecurity 2018年第1期1卷 500-513页

作者： Zhihao Wang Hong Li Qiang Li wei Li Hongsong zhu Limin Sun Institute of Information Engineering Chinese Academy of Sciences BeijingChina School of Cyber Security University of Chinese Academy of SciencesBeijingChina School of Computer and Information Technology Beijing Jiaotong UniversityBeijingChina Department of Computer Science Georgia State UniversityAtlantaGeorgia

IP geolocation determines geographical location by the IP address of Internet *** geolocation is widely used by target advertising,online fraud detection,cyber-attacks attribution and so *** has gained much more attentions in these years since more and more physical devices are connected to *** geolocation methods cannot resolve the geolocation accuracy for those devices with few landmarks *** this paper,we propose a novel geolocation approach that is based on common routers as secondary landmarks(Common Routers-based Geolocation,CRG).We search plenty of common routers by topology discovery among web server *** use statistical learning to study localized(delay,hop)-distance correlation and locate these common *** locate the accurate positions of common routers and convert them as secondary landmarks to help improve the feasibility of our geolocation system in areas that landmarks are sparsely *** manage to improve the geolocation accuracy and decrease the maximum geolocation error compared to one of the state-of-the-art geolocation *** the end of this paper,we discuss the reason of the efficiency of our method and our future research.

关键词： IP geolocation Network topology discovery Web landmarks Relative latency Statistical learning

Synthesis of pyridine-based poly(N-arylenebenzimidazole sulfone)

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Chinese Chemical Letters 2012年第7期23卷 871-874页

作者： Ye wei Xu Jie Tang Guan Jun Chang Fang Hua zhu Lin Zhang Research Center of Laser Fusion China Academy of Engineering PhysicsMianyang 621900China School of Chemistry and Chemical Engineering Mianyang Normal UniversityMianyang 621000China

Poly（N-arylenebenzimidazole pyridine sulfone）（PNABIPS） has been prepared via the aromatic nucleophilic displacement reaction of 2,6-bis（2-benzimidazoly）pyridine（BBP） with bis（4-fluorophenyl） *** was synthesized by reaction of 2,6- pyridinedicarboxylic acid with 1,2-phenylenediamine in polyphosphoric *** chemical structure of BBP was confirmed by FTIR, HRMS,^1H NMR and ^13C *** characterization of the polymer was performed with FT-IR,^1H NMR,elemental analysis, GPC,XRD,DSC,TGA and solubility *** polymer was obtained in quantitative yield with M_n value 12,600 and M_w value 28,300,*** and TGA measurements show that the glass transition temperature（T_g） is 312℃ and 5%weight loss temperature is 434℃ in nitrogen and 545℃ in air,*** addition,the novel polymer exhibits good solubility,which can be dissolved in common organic solvent at room temperature.

关键词： Polybenzimidazoles Poly(N-arylenebenzimidazole pyridine sulfone) Thermal properties Solubility

Effect of long-term fertilization on phosphorus fractions in different soil layers and their quantitative relationships with soil properties

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Journal of Integrative Agriculture 2022年第9期21卷 2720-2733页

作者： WANG Qiong QIN Zhen-han Zhang wei-wei CHEN Yan-hua zhu Ping PENG Chang WANG Le Zhang Shu-xiang Gilles COLINET Institute of Agricultural Resources and Regional Planning Chinese Academy of Agricultural Sciences/National Engineering Laboratory for Improving Quality of Arable LandBeijing 100081P.R.China TERRA Gembloux Agro-Bio TechUniversity of LiegeGembloux5030Belgium Institute of Plant Nutrition Resources and EnvironmentBeijing Academy of Agriculture and Forestry SciencesBeijing 100097P.R.China Agricultural Environment and Resources Center Jilin Academy of Agricultural SciencesChangchun 130033P.R.China

Investigating the dynamics and distribution of soil phosphorus(P) fractions can provide a basis for enhancing P utilization by crops. Four treatments from a 29-year long-term experiment in black soil with maize cropping were involved in this study: no fertilizer(CK), inorganic nitrogen and potassium(NK), inorganic nitrogen, phosphorus, and potassium(NPK), and NPK plus manure(NPKM). We analyzed soil P fractions in different soil layers using a modified Hedley sequential method. The long-term NPKM treatment significantly increased total P by 0.6–1.6 times in the different soil layers. The Olsen-P concentration far exceeded the environmental threshold for soil Olsen-P(50.6 mg kg) in the NPKM treatment in the 0–60 cm soil profile. Moreover, the concentrations and proportion of labile and partially labile inorganic P(Pi) fractions(i.e., Na HCO-extracted Pi, Na OH-extracted Pi, and dilute HClextracted Pi) to the sum of all P fractions(Pt) in the 0–60 cm soil profile were higher in the NPKM treatment than in the NPK treatment, indicating that manure could promote the transformation of non-labile into more labile forms of P in soil, possibly by manure reducing P fixation by soil particles. Soil organic matter, Mehlich-3 extractable iron(Fe), and organic-bound aluminum were increased by fertilization, and were the main factors influencing the differences in the P fractions in the 0–20 cm soil layer. Soil mineral components, i.e., free Fe oxide and Ca CO, were the main factors influencing the P fractions in the subsoil. The soil P transformation process varied with soil layer and fertilization. Application of manure fertilizer can increase the labile(Olsen) P concentrations of the various soil layers, and thus should reduce the mineral P fertilizer requirement for crop growth and reduce potential environmental damage.

关键词： long-term experiment phosphorus fractions soil profile phosphorus availability black soil

Kinetic modeling of multiphase fow based on simplified Enskog equation

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Frontiers of physics 2020年第6期15卷 133-145页

作者： Yu-Dong Zhang Ai-Guo Xu Jing-Jiang Qiu Hong-Tao wei Zung hang wei School of Mechanics and Safety Engineering Zhengzhou UniversityZhengzhou 450001China Laboratory of Computational Physics Institute of Applied Physics and Computational MathematicsP.O.Bor 8009-26Beijing 100088China Center for Applied Physics and Technology MOE Key Center for High Energy Density Physics SimulationsCollege of EngineeringPeking UniversilyBeifing 100871China

A new kinetic model for multiphase flow was presented under the framework of the discrete Boltzmann method(DBM).Significantly different from the previous DBM,a bottom-p approach was adopted in this *** effects of molecular size and repulsion potential were described by the Enskog collision model;the attraction potential was obtained through the mean field approximation *** molecular interactions,which result in the non-ideal equation of state and surface tension,were directly introduced as an external force *** typical benchmark problems,including Couette flow,two-phase coexistence curve,the Laplace law,phase separation,and the collision of two droplets,were simulated to verify the ***,for two types of droplet collisions,the strengths of two non-equilibrium ffcts,D*2 and D*3,defined through the second and third order non-conserved kinetic moments of(f-feq),are comparatively investigated,where f(feq)is the(equilibrium)distribution *** is interesting to find that during the collision process,D*2is always significantly larger than D*3,D*2 can be used to identify the different stages of the collision process and to distinguish different types of *** modeling method can be directly extended to a *** model for the case where the non-equilibrium pffect is strong,and the linear constitutive law of viscous stress is no longer valid.

关键词： multiphase flow discrete Boltzmann method Enskog equation non-equilibrium charac-teristics

Rapid growth cost in “all-fish” growth hormone gene transgenic carp:Reduced critical swimming speed

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Chinese Science Bulletin 2007年第11期52卷 1501-1506页

作者： LI DeLiang FU CuiZhang HU wei ZHONG Shan WANG YaPing zhu ZuoYan State Key Laboratory of Freshwater Ecology and Biotechnology Institute of Hydrobiology Chinese Academy of Sciences Wuhan 430072 China Graduate University of Chinese Academy of Sciences Beijing 100049 China Department of Genetics Basic Medical School of Wuhan University Wuhan 430071 China

Evidence has accumulated that there is a trade-off between benefits and costs associated with rapid growth. A trade-off between growth rates and critical swimming speed (Ucrit) had been also reported to be common in teleost fish. We hypothesize that growth acceleration in the F3 generation of "all-fish" growth hormone gene (GH) transgenic common carp (Cyprinus carpio L.) would reduce the swimming abilities. Growth and swimming performance between transgenic fish and non-transgenic controls were compared. The results showed that transgenic fish had a mean body weight 1.4―1.9-fold heavier,and a mean specific growth rate (SGR) value 6%―10% higher than the controls. Transgenic fish,however,had a mean absolute Ucrit (cm/s) value 22% or mean relative Ucrit (BL/s) value 24% lower than the controls. It suggested that fast-growing "all-fish" GH-transgenic carp were inferior swimmers. It is also supported that there was a trade-off between growth rates and swimming performance,i.e. faster-growing individuals had lower critical swimming speed.

关键词：生长激素基因游泳速度鲤鱼基因突变

Macrophage migration inhibitory factor may contribute to hypertrophy of lumbar ligamentum flavum in type 2 diabetes mellitus

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Chinese Medical Journal 2020年第5期133卷 623-625页

作者： Qi-Lin Lu Xiao-Zhen Wang wei Xie Xiong-wei Chen Yi-Liang zhu Xu-Gui Li Department of Orthopedics Hubei 672 Orthopaedics Hospital of Integrated Chinese&Western MedicineHubei University of Chinese MedicineWuhanHubei 430065China

To the Editor:Lumbar spinal canal stenosis(LSCS)is a common disease among older *** lumbar ligamentum flavum(LLF)plays a vital role in the pathogenesis of *** physiological LLF is a kind of dense connective tissue with thickness of 2 to 4mm,which is mainly composed of fibroblasts and extracellular matrix(ECM).ECM contains elastic,collagen fibers and ground *** distribution characteristics of fibers show that a large number of elastic fibers are mixed with a small amount of the collagen fibers;mainly type I and type III collagen *** fibers are arranged tightly and regularly along the direction of column’s *** LLF is located in the dorsal part of the dura mater of the spinal canal,and it attaches to the upper border and lower parts of anterior surfaces of the *** hypotrophy of LLF is the consequence of several factors such as aging,inflammatory process,stress loading and genetic predisposition.

关键词： lumbar ligament fibers

Professor Yongjia Duan: a distinguished plant pathologist and agricultural educator

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Protein & Cell 2019年第11期10卷 779-782页

作者： Fei Du wei-Ping Deng Xia-Hong He Hong Cai You-Yong zhu State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan Yunnan Agricultural UniversityKunming 650201China Key Laboratory for Agro-biodiversity and Pest Control of Ministry of Education Yunnan Agricultural UniversityKunming 650201China

Professor Yongjia Duan(段永嘉)is a distinguished plant pathologist and agricultural educator in China He has devoted his entire life in developing and sharing his knowl?edge and experiences in Plant *** was born in 1910 in Siping,Jilin *** 1931,he went to Hokkaido University in Japan to study plant pathology,where he obtained his bachelors *** Japan,he met *** Omura,a primary school teacher(Fig.1).They fell in love and got *** 1937,*** and his wife went back to China,hoping that he could contribute to the development of scienee and technology in China.

关键词： has devoted distinguished

健康饮食模式降低胆结石风险的相关因素Logistic分析

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中华普外科手术学杂志（电子版） 2024年第2期18卷 188-191页

作者：刘斌朱慧席江伟郑卫王新波河北北方学院附属第二医院普外科河北张家口075100 河北北方学院附属第二医院功能科河北张家口075100

目的评估饮食模式与胆结石的关系。方法回顾性分析2021年9月至2022年9月110例经超声检查证实为胆石症患者的病例资料(胆石症组),同时纳入年龄匹配的非胆石症230例患者的病例资料(对照组)。使用有效和可靠的食物频率问卷来评估参与者的... 详细信息

目的评估饮食模式与胆结石的关系。方法回顾性分析2021年9月至2022年9月110例经超声检查证实为胆石症患者的病例资料(胆石症组),同时纳入年龄匹配的非胆石症230例患者的病例资料(对照组)。使用有效和可靠的食物频率问卷来评估参与者的饮食摄入量确定膳食结构。采用SPSS 27.0软件进行统计分析,采用Logistic回归方法计算胆结石患病的优势比。P<0.05为差异有统计学意义。结果胆石症组患者总能量摄入量、2型糖尿病患病率高于对照组,体力活动、蛋白质摄入量、膳食胆固醇、膳食纤维低于对照组(P<0.05)。胆石症与“健康”饮食模式之间有显著的关系。“健康”饮食模式最高的参与者患胆结石的可能性显著降低(OR=0.33,95%CI:0.120-0.89)。结论在健康饮食模式的背景下,大量食用植物油、蔬菜、水果、鱼、豆类和坚果,以及低摄入脂肪和盐,与患胆结石的风险成反比。

关键词：胆结石胆囊切除术饮食因素分析,统计学

Preparation and Characterization of Superparamagnetic Fe_3O_4/CNTs Nanocomposites Dual-drug Carrier

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Journal of Wuhan University of Technology(Materials Science) 2017年第1期32卷 42-46页

作者：张小娟郝凌云 WANG Hehe zhu Xingqun Zhang Zhiying HU Xiaohong JIANG wei School of Material Engineering Jinling Institute of Technology Nanjing 211169 China National Special Superfine Powder Engineering Research Center Nanjing University of Science and Technology Nanjing 210094 China

Fe3O4/carbon nanotubes（Fe3O4/CNTs） nanocomposites were prepared by polylol hightemperature decomposition of the precursor ferric chloride and CNTs in liquid triethylene *** surface modification with hexanediamine,folate was covalently linked to the amine group of magnetic Fe3O4/CNTs *** products were characterized by Fourier-transform infrared spectroscopy,transmission electron microscopy,and vibrating sample *** Fe3O4/CNTs were used as a dual-drug carrier to co-delivery of the hydrophilic drug epirubicin hydrochloride and hydrophobic drug *** results indicated that the Fe3O4/CNTs had a favorable release property for epirubicin and paclitaxel,and thus had potential application in tumor-targeted combination chemotherapy.

关键词： Fe3O4/CNTs nanocomposites dual-drug carrier epirubicin paclitaxel