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现代化工 2024年第9期44卷 59-63页

作者：刘鹏宇陈莉朱铭张任梁田秉晖兰州交通大学环境与市政工程学院甘肃兰州730070 中国科学院大学生态环境研究中心工业废水无害化与资源化国家工程研究中心北京100085

概括了目前选择性电渗析中阴离子交换膜提高盐分离效果的主要方式,同时就目前选择性电渗析技术的局限性进行了总结,并对离子交换膜、电极的开发和工艺优化进行了展望。

关键词：高盐废水选择性电渗析离子交换膜离子分离

NUMERICAL STUDY OF THE RELATIONSHIP BETWEEN APPArenT SLIP LENGTH AND CONTACT ANGLE BY LATTICE BOLTZMANN METHOD

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Journal of Hydrodynamics 2012年第4期24卷 535-540页

作者： zhang ren-liang DI Qin-feng WANG Xin-liang DING Wei-peng GONG Wei Shanghai Institute of Applied Mathematics and Mechanics and Shanghai Key Laboratory of Mechanics in Energy Engineering Shanghai UniversityShanghai 200072China

The apparent slip between solid wall and liquid is studied by using the Lattice Boltzmann Method （LBM） and the Shan-Chen multiphase model in this paper. With a no-slip bounce-back scheme applied to the interface, flow regimes under different wall wettabilities are investigated. Because of the wall wettability, liquid apparent slip is observed. Slip lengths for different wall wettabilities are found to collapse nearly onto a single curve as a function of the static contact angle, and thereby a relationship between apparent slip length and contact angle is suggested. Our results also show that the wall wettability leads to the formation of a low-density layer between solid wall and liquid, which produced apparent slip in the micro-scale.

关键词： Lattice Boltzmann Method (LBM) wettability apparent slip contact angle nano-particles adsorbing method

Concentration and source identification of polycyclic aromatic hydrocarbons and phthalic acid esters in the surface water of the Yangtze River Delta,China

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Journal of Environmental Sciences 2012年第2期24卷 335-342页

作者： Lifei zhang liang Dong Lijun ren Shuangxin Shi Li Zhou Ting zhang Yeru Huang State Environmental Protection Key Laboratory of Dioxin Pollution Control National Research Center for Environmental Analysis and Measurement Beijing 100029 China

The pollution from polycyclic aromatic hydrocarbons（PAHs） and phthalic acid esters（PAEs） in the surface water of the rapidly urbanized Yangtze River Delta region was *** surface water samples were collected in June *** samples were liquid-liquid extracted using methylene chloride and analyzed by gas chromatography-mass *** of PAHs and PAEs ranged 12.9-638.1 ng/L and 61-28550 ng/L,***,naphthalene,pyrene,phenanthrene,di-2ethylhexyl phthalate,and di-n-butyl phthalate were the most abundant compounds in the *** water samples were moderately polluted with benzo[a]pyrene according to China＇s environmental quality standard for surface *** two highest concentrations of PAHs and PAEs occurred in samples from Taihu Lake,Wuxi City and the western section of Yangchenghu *** sources of pollution at S7 were petroleum combustion and the plastics industry,and at Yangchenghu Lake were petroleum combustion and domestic *** in samples from the Beijing-Hangzhou Grand Canal originated from diesel *** were no obvious sources of pollution for the other water *** results can be used as reference levels for future monitoring programs of pollution from PAHs and PAEs.

关键词： polycyclic aromatic hydrocarbons phthalic acid esters Yangtze River Delta surface water

Associated Productions of HZZ and HHZ at Linear Colliders in Large Extra Dimension Model

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Communications in Theoretical Physics 2006年第3期45卷 437-446页

作者： ZHOU Ya-Jin MA Wen-Gan HAN liang zhang ren-You JIANG Yi Department of Modern Physics University of Science and Technology of China Hefei 230026 China

In this paper we investigate the effects of the large extra dimensions on the two processes e＋ e-→＋ H^0 Z^0 Z^0 and e^＋e^-→ H^0H^0 Z^0 at linear colliders in both unpolarized and polarized collision modes. We find that the virtual Kaluza-Klein graviton exchange can significantly enhance the cross section from their standard model expectations for these two processes. The results show that the LED effect on the process e＋ e-→＋ H^0 Z^0 Z^0 allows the observation limits on the effective scale Ms to be probed up to 9. 75 TeV and 10.1 TeV in the unpolarized and ＋-（λe＋ =1/2, λe-= -1/2） polarized beam collision modes （with Pe＋ = 0.6, Pe-=0.8）, respectively. For the process e＋ e-→＋ H^0 H^0 Z^0, these limits on Ms can be probed up to 6.06 TeV and 6.38 TeV in the unpolarized and polarized collision modes separately. We find that the λe＋ = 1/2, λe-= -1/2 polarization collision mode in both processe＋ e-→＋ H^0 Z^0 Z^0 and e＋ e-→＋ H^0 H^0 Z^0 may provide a possibility to improve the sensitivity in probing the LED effects.

关键词： large extra dimensions linear collider Higgs boson gauge boson

Synthesis,physicochemical and biological properties of oligonucleotides incorporated with amino-isonucleosides

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Science China Chemistry 2012年第1期55卷 70-79页

作者： WANG Fang CHEN Yue HUANG Ye JIN Hong-Wei zhang liang-ren YANG Zhen-Jun zhang Li-He State Key Laboratory of Natural and Biomimetic Drugs School of Pharmaceutical Sciences Peking UniversityBeijing 100191China

Antisense oligonucleotides(ASONs) and siRNAs have been applied extensively for the regulation of cellular and viral gene expression,and RNAi is currently one of the most promising new approaches for anti-tumor and anti-viral *** order to improve bioactivity properties and physicochemical properties of siRNA,we synthesized a novel class of ASONs II-VII incorporated with amino-isonucleoside(isoA1 and isoA2) for investigation on basic physicochemical *** we designed amino-isonucleoside(isoA1,isoA2 and isoT1) incorporated siRNA *** meaningful results have been obtained from the physicochemical property experiments in *** RNAi potency experiments,we investigated RNAi potency of each strand of the *** amino-isonucleosides incorporated siRNAs showed promising bioactivity properties and had position *** off target effect from sense strand loading in siRNA application was observed.

关键词： amino-isonucleoside antisense oligonucleotide siRNA

Lateral Migration and Nonuniform Rotation of Biconcave Particle Suspended inPoiseuille Flow

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Chinese Physics Letters 2013年第6期30卷 114-117页

作者： WEN Bing-Hai CHEN Yan-Yan zhang ren-liang zhang Chao-Ying FANG Hai-Ping Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800 University of Chinese Academy of Sciences Beijing 100049 College of Computer Science and Information Engineering Guangxi Normal UniversityGuilin 541004 Department of Physics Zhejiang Normal UniversityJinhua 321004

A biconcave particle suspended in a Poiseuille flow is investigated by the multiple-relaxation-time lattice Boltzmann method with the Galilean-invariant momentum exchange *** lateral migration and equilibrium of the particle are similar to the Segré-Silberberg effect in our numerical ***,two lateral equilibrium positions are observed corresponding to the releasing positions of the biconcave *** upper equilibrium positions significantly decrease with the increasing Reynolds number,whereas the lower ones are almost insensitive to the Reynolds ***,the regular wave accompanied by nonuniform rotation is exhibited in the lateral movement of the biconcave *** can be attributed to the fact that the biconcave shape in various postures interacts with the parabolic velocity distribution of the Poiseuille flow.A set of contours illustrate the dynamic flow field when the biconcave particle has successive postures in a rotating period.

关键词： flow. concave positions

Investigating the elliptic anisotropy of identified particles in p-Pb collisions with a multi-phase transport model

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Nuclear Science and Techniques 2024年第2期35卷 160-169页

作者： Si-Yu Tang liang Zheng Xiao-Ming zhang ren-Zhuo Wan School of Mathematical and Physical Sciences Wuhan Textile UniversityWuhan 430200China School of Mathematics and Physics China University of Geosciences(Wuhan)Wuhan 430074China Key Laboratory of Quark and Lepton Physics(MOE)and Institute of Particle Physics Central China Normal UniversityWuhan 430079China Hubei Key Laboratory of Digital Textile Equipment Wuhan Textile UniversityWuhan 430200China School of Electronic and Electrical Engineering Wuhan Textile UniversityWuhan 430200China

The elliptic azimuthal anisotropy coefficient(v_(2))of the identified particles at midrapidity(|η|<0.8)was investigated in p-Pb collisions at√s_(NN)=5.02 TeV using a multi-phase transport model(AMPT).The calculatio... 详细信息

The elliptic azimuthal anisotropy coefficient(v_(2))of the identified particles at midrapidity(|η|rential v_(2)based on the advanced flow extraction method of light flavor hadrons(pions,kaons,protons,andΛ)in small collision systems were extended to a wider transverse momentum(p_(T))range of up to 8 GeV/c for the first *** string-melting version of the AMPT model provides a good description of the measured p_(T)-differential v_(2)of the mesons but exhibits a slight deviation from the baryon v_(2).In addition,we observed the features of mass ordering at low p_(T)and the approximate number-of-constituentquark(NCQ)scaling at intermediate p_(T).Moreover,we demonstrate that hadronic rescattering does not have a significant impact on v_(2)in p-Pb collisions for different centrality selections,whereas partonic scattering dominates in generating the elliptic anisotropy of the final *** study provides further insight into the origin of collective-like behavior in small collision systems and has referential value for future measurements of azimuthal anisotropy.

关键词： Azimuthal anisotropy Small collision systems Transport model

Preparation of 1-Trifluoroethyl-4-methoxy-5-chloropyridazin-6-one: Methyl Shift of 4-Methoxy-5-chloropyridazin-6-one

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有机化学 2003年第Z1期23卷 30-31页

作者： LIN Gui-Chun YANG Zhen-Jun zhang liang-ren LIU Li zhang Li-He The State Key Laboratory of Natural and Biomimetic Drugs School of Pharmaceutical Sciences Peking University Health Science Center Beijing 100083 The State Key Laboratory of Natural and Biomimetic Drugs School of Pharmaceutical Sciences Peking University Health Science Center Beijing 100083 The State Key Laboratory of Natural and Biomimetic Drugs School of Pharmaceutical Sciences Peking University Health Science Center Beijing 100083 The State Key Laboratory of Natural and Biomimetic Drugs School of Pharmaceutical Sciences Peking University Health Science Center Beijing 100083 The State Key Laboratory of Natural and Biomimetic Drugs School of Pharmaceutical Sciences Peking University Health Science Center Beijing 100083

　　N1-Trifluoroethyl-4-methoxy-5-chloro-3-pyridazone (4) was synthesized by the substitution reaction of 4methoxy-5-chloro-3-pyridazone (1) with trifluoroethyl trifluoromethanesulfonate (A) at basic condition. In the most of reaction conditions, N1-methyl-4-methoxy-5-chloro-3-pyridazone (2) was obtained as a major by-product, which means that the methyl group in the 4-methoxy shifted to N-1 position inter-molecularly aided by A or trifluoroethyl methanesulfonate (B). We obtained N1-methyl-4-trifluoro-ethoxy-5-chloro-3-pyridazone (3) in the reaction of 1 with B at higher temperature in different solvents with different yield (Table 1 ), which mechanism was shown in Figure 1. When we tried to synthesize 4 in the reaction of 1 with trifluoroethyl toluenesulfonate under basic condition, 6 was obtained (Figure 2). All the detailed mechanisms are undergoing investigated.……

关键词： substitution reaction higher temperature

Influence of Mixture Gas Conditions on the Laminar Combustion Characteristics of Natural Gas

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Journal of Thermal Science 2024年第3期33卷 1231-1241页

作者： LOU Diming ZHU Kan zhang Yunhua ren Yedi TAN Piqiang FANG liang FAN Lanlan School of Automotive Studies Tongji UniversityShanghai201804China Ji’nan Power Co.Ltd Sinotruk GroupJi’nan250200China

Natural gas is a promising alternative fuel for the internal combustion engine,and natural gas engine has become an efficient and feasible measure to deal with the energy shortage and climate *** the laminar flame characteristics are the foundation of the turbulent flame,the laminar flame characteristics of natural gas have a significant impact on the combustion status and efficiency of the engine.A visual constant volume bomb was used to study the influence of the gas components,different excess air coefficient(λ),and initial conditions on the laminar combustion characteristics of natural *** experimental results showed that when the initial pressure and temperature were 0.1 MPa and 300 K respectively,compared to propane,ethane had a remarkable influence on the equivalent-combustion laminar-combustion-speed,with an average increase of approximately 5.1%for every 2.5%increase in the ethane *** laminar combustion velocity of the natural gas under different excess air coefficients had a maximum value at aboutλ=1.0,and the Markstein length of the flame decreased with the increase of theλ.The increase in the initial pressure of the mixture resulted in a decrease in the equivalent-combustion laminar-combustion-speed of the flame,a significant decrease in the Markstein *** increase of the initial temperature of the mixture led to a rapid increase of the equivalent-combustion laminar-combustion-speed,but the effect on the flame Markstein length was not dominant.

关键词： constant volume bomb natural gas engine combustion characteristics laminar combustion velocity Markstein length

Wheat FHB resistance assessment using hyperspectral feature band image fusion and deep learning

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International Journal of Agricultural and Biological Engineering 2024年第2期17卷 240-249页

作者： Kun liang Zhizhou ren Jinpeng Song Rui Yuan Qun zhang College of Artificial Intelligence Nanjing Agricultural UniversityNanjing 210031China Jiangsu Province Engineering Lab for Modern Facility Agriculture Technology&Equipment Nanjing 210031China

The breeding and selection of resistant varieties is an effective way to minimize wheat Fusarium head blight(FHB)hazards,so it is important to identify and evaluate resistant *** traditional resistance phenotype identification is still largely dependent on time-consuming manual *** this paper,the method for evaluating FHB resistance in wheat ears was optimized based on the fusion feature wavelength images of the hyperspectral imaging system and the Faster R-CNN *** spectral data from 400-1000 nm were preprocessed by the multiple scattering correction(MSC)*** feature wavelengths(553 nm,682 nm and 714 nm)were selected by analyzing the X-loading weights(XLW)according to the absolute value of the peaks and troughs in different principal component(PC)load coefficient ***,the different fusion methods of the three feature wavelengths were explored with different weight *** R-CNN was trained on the fusion and RGB datasets with VGG16,AlexNet,ZFNet,and ResNet-50 networks ***,the other detection models SSD,YOLOv5,YOLOv7,CenterNet,and RetinaNet were used to compare with the Faster R-CNN *** a result,the Faster R-CNN with VGG16 was best with the mAP(mean Average Precision)ranged from 97.7%to 98.8%.The model showed the best performance for the Fusion Image-1 ***,the Faster R-CNN model with VGG16 achieved an average detection accuracy of 99.00%,which was 23.89%,1.21%,0.75%,0.62%,and 8.46%higher than SSD,YOLOv5,YOLOv7,CenterNet,and RetinaNet ***,it was demonstrated that the Faster R-CNN model based on the hyperspectral feature image fusion dataset proposed in this paper was feasible for rapid evaluation of wheat FHB *** study provided an important detection method for ensuring wheat food security.

关键词： Fusarium head blight resistance evaluation hyperspectral feature band image fusion deep learning Faster R-CNN