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肿瘤血管生成及抗血管生成的临床应用

中国医药工业杂志 2006年第2期37卷 133-136页

作者：潘昊上海医药工业研究院上海200437

介绍了肿瘤血管生成的过程、特点、调控因素及其与肿瘤转移的关系,简要综述了抗血管生成的临床应用。

关键词：肿瘤血管生成抗血管生成综述

Construction of Fe/Ag galvanic couple by mechanochemical in-situ reduced Ag to accelerate the degradation of Fe-based implant

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Science China(Technological Sciences) 2023年第10期66卷 2824-2836页

作者： YANG WenJing SONG hao Zhao ZhengYu SHUAI CiJun pan hao Institute of Bioadditive Manufacturing Jiangxi University of Science and TechnologyNanchang 330013China Shenzhen Institute of Information Technology School of Sino-German RoboticsShenzhen 518172China State Key Laboratory of Precision Manufacturing for Extreme Service Performance College of Mechanical and Electrical EngineeringCentral South UniversityChangsha 410083China Department of Periodontics&Oral Mucosal Section Xiangya Stomatological HospitalCentral South UniversityChangsha 410013China

Orthopedic applications of Fe have been hindered by the insufficient degradation *** with noble elements(such as Ag,Au,and Pt)to generate galvanic couples is a feasible ***,the direct preparation of homogenous alloys by mechanical alloying or metallurgy is difficult because of the differences in strength,density,and *** this study,Ag_(2)O was selected as the precursor phase for incorporation into Fe to achieve a homogeneous distribution of Ag,which was then reduced in situ to Ag via a mechanochemical reduction reaction during mechanical *** composite powders were printed as implants by selective laser melting,where a fast cooling rate contributed to the retention of the phase distribution of the obtained *** electrochemical tests showed that the Fe-Ag_(2)O implant had a high corrosion current density(21.88±0.12μA/cm^(2))and instantaneous corrosion rate(0.23±0.05 mm/year).Moreover,the implant exhibited a faster degradation rate(0.22 mm/year)than Fe(0.15 mm/year)and Fe-Ag(0.21 mm/year)after immersion for 28 *** acceleration mechanism of the implant could be attributed to the uniformly distributed Ag particles triggering many galvanic couples with the Fe grains,which was confirmed by the observation of the corrosion *** addition,the composite implants exhibited good biocompatibility and antibacterial properties.

关键词： biodegradable implant mechanochemical reduction uniform dispersion galvanic corrosion

Some 3-adic congruences for binomial sums

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Science China Mathematics 2014年第4期57卷 711-718页

作者： ZHANG Yong pan hao Department of Basic Course Nanjing Institute of Technology Department of Mathematics Nanjing University

We prove some 3-adic congruences for binomial sums,which were conjectured by Zhi-Wei *** example,for any integer m≡1（mod 3）and any positive integer n,we have v3（1/n ∑n-1X k=0 1/mk 2k/ k〉））≥min{3（n）,3（m-1）-1},where 3（n）denotes the 3-adic order of *** our proofs,we use several auxiliary combinatorial identities and a series converging to 0 over the 3-adic field.

关键词： 3-adic order binomial sum

Vehicle identification by improved stacking via kernel principal component regression

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International Journal of Intelligent Computing and Cybernetics 2014年第4期7卷 415-435页

作者： Bailing Zhang hao pan Department of Computer Science and Software Engineering Xi’an Jiaotong-Liverpool UniversitySuzhouChina Lucas Varity Langzhong Brake Co.Ltd Langfang Development ZoneHebeiChina

Purpose–Many applications in intelligent transportation demand accurate categorization of *** purpose of this paper is to propose a working image-based vehicle classification *** first component vehicle detection is implemented by applying Dalal and Triggs’s histograms of oriented gradients features and linear support vector machine(SVM)*** second component vehicle classification,which is the emphasis of this paper,is accomplished by an improved stacked *** an effective ensemble learning strategy,stacked generalization has been proposed to combine multiple models using the concept of a ***,it was found that the well-known meta-learning scheme multi-response linear regression(MLR)for stacked generalization performs poorly on the vehicle ***/methodology/approach–A new meta-learner is then proposed based on kernel principal component regression(KPCR).The stacked generalization scheme consists of a heterogeneous classifier ensemble with seven base classifiers,*** discriminant classifier,fuzzy k-nearest neighbor,logistic regression,Parzen classifier,Gaussian mixture model,multiple layer perceptron and ***–Experimental results using more than 2,500 images from four types of vehicles(bus,light truck,car and van)demonstrated the effectiveness of the proposed *** improved stacked generalization produced consistently better results when compared to any of the single base classifier used and four other beta learning algorithms,including MLR,majority voting,logistic regression and decision ***/value–With the seven base classifiers,the KPCR-based stacking offers a performance of 96 percent accuracy and 95 percent k coefficient,thus exhibiting promising potentials for real-world applications.

关键词： Intelligent transportation Learning Pattern recognition

Slip Model Used for Prediction of r Value of BCC Metal Sheets from ODF Coefficients

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Journal of Iron and Steel Research International 2000年第1期7卷 36-38页

作者： pan hao WANG Xiao-ming Central Iron &.Steel Research Institute

Different slip models were used for prediction of r value of BCC metal sheets from ODF *** to the maximum plastic work theory developed by Bishop and Hill,it is expected that the higher of Taylor factors given by a slip’ model,the better prediction obtained based on the *** this point of view,a composed slip model of BCC metals was *** on the model,the agreement of predicted r values for deep drawing steels with experimental ones is excellent.

关键词： bcc metals r values slip model texture

MESO-based Robustness Voltage Sliding Mode Control for AC Islanded Microgrid

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Chinese Journal of Electrical Engineering 2020年第2期6卷 83-93页

作者： hao pan Qingfang Teng Dangdang Wu School of Electrical Engineering and Automation Lanzhou Jiaotong UniversityLanzhou 730070China

A new modified extended state observer(MESO)-based robustness voltage sliding mode control(SMC)strategy is proposed for an AC islanded microgrid under system uncertainties including system parameter and load ***,the disturbance effect on the system is regarded as a lumped uncertainty,and a state space model of the uncertain islanded microgrid system is ***,a modified extended state observer is designed to estimate external disturbances and internal ***,considering the lumped uncertainty,a sliding mode controller with a multi-power reaching law is proposed to enable the output voltage of the system to track its reference voltage rapidly and accurately,and to enhance the robustness of the *** simulation results confirm that the proposed robustness voltage control strategy can perform satisfactory voltage control and demonstrate a strong capability to reject parameter and load variation.

关键词： Islanded microgrid modified extended state observer multi-power reaching law system uncertainties robustness voltage sliding mode control

Micro-mechanism Study on the Different Antioxidants Protective Effect of Vegetable Oil by ReaxFF Molecular Dynamics

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CSEE Journal of Power and Energy Systems 2024年第3期10卷 1269-1279页

作者： haoxi Cong Xuefeng Hu hao pan Qingmin Li State Key Laboratory of Alternate Electrical Power System With Renewable Energy Sources North China Electric Power UniversityBeijing 102206China

The aging problem of vegetable oil has severely restricted the popularization and application of vegetable oil *** antioxidants is the most recommended *** present,there is insufficient research on the micromechanism application of the protective effect of antioxidants on vegetable *** this paper,multiple vegetable oil models with different types and concentrations of antioxidants are *** the molecular dynamics simulation based on ReaxFF is carried out at different temperatures and oxygen *** show that the protective mechanism of antioxidants is to release H and combine this with free radicals generated by the decomposition of unsaturated fatty acids(UFA)in the *** addition,the protective effects of four antioxidants show different *** stronger ones are tert-butyl hydroquinone(TBHQ)and butylated hydroxytoluene(BHT),while the weaker ones are butylated hydroxyanisole(BHA)and propyl gallate(PG).TBHQ has a better protective effect at lower concentrations,but the decomposition of UFA is promoted at higher *** the temperature rises,the decomposition of UFA is *** the addition of oxygen,smaller molecular compounds are easily oxidized,and the decomposition of UFA is *** above research could reveal the microscopic mechanism of antioxidant protection on vegetable oil,providing theoretical references for further exploration of effective vegetable oil aging protection technology.

关键词： Antioxidant molecular dynamics transformer vegetable oil

Proof of three conjectures on congruences

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Science China Mathematics 2014年第10期57卷 2091-2102页

作者： pan hao SUN Zhi-Wei Department of Mathematics Nanjing University

This paper proves three conjectures on congruences involving central binomial coefficients or Lucas *** p be an odd prime and let a be a positive *** is shown that if p=1（mod 4）or a〉1then [3/4pa]∑k=0≡（2/pa）（mod p^2）where（—）denotes the Jacobi *** confirms a conjecture of the second author.A conjecture of Tauraso is also confirmed by showing that p-1∑k=1 Lk/k^2≡0（mod p） provided p〉*** the Lucas numbers Lo,L1,L2,...are defined by L_0=2,L1=1 and Ln＋1=Ln＋Ln-l（n=1,2,3,...）.The third theorem states that if p=5 then Fp^a-（p^a/5）mod p^3 can be determined in the following way： p^a-1∑k=0（-1）^k（2k k）≡（p^a/5）（1-2F p^a-（pa/5））（mod p^3）which appeared as a conjecture in a paper of Sun and Tauraso in 2010.

关键词： congruences modulo prime powers Fibonacci numbers Lucas sequences

Scenario Modeling-Aided AP Placement Optimization Method for Indoor Localization and Network Access

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China Communications 2024年第3期21卷 37-50页

作者： pan hao Chen Yu Qi Xiaogang Liu Meili School of Mathematics and Statistics Xidian UniversityXi’an 710126China Science and Technology on Near-Surface Detection Laboratory Wuxi 214035China School of Software Nanchang Hangkong UniversityNanchang 330063China

Owing to the ubiquity of wireless networks and the popularity of WiFi infrastructures,received signal strength(RSS)-based indoor localization systems have received much *** placement of access points(APs)significantly influences localization accuracy and network ***,the indoor scenario and network access are not fully considered in previous AP placement optimization *** study proposes a practical scenario modelingaided AP placement optimization method for improving localization accuracy and network *** order to reduce the gap between simulation-based and field measurement-based AP placement optimization methods,we introduce an indoor scenario modeling and Gaussian process-based RSS prediction *** that,the localization and network access metrics are implemented in the multiple objective particle swarm optimization(MOPSO)solution,Pareto front criterion and virtual repulsion force are applied to determine the optimal AP ***,field experiments demonstrate the effectiveness of the proposed indoor scenario modeling method and RSS prediction model.A thorough comparison confirms the localization and network access improvement attributed to the proposed anchor placement method.

关键词： indoor localization MOPSO network access RSS prediction