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| 1 | Ideotype root architecture for efficient nitrogen acquisition by maize in intensive cropping systems显示文摘The use of nitrogen(N) fertilizers has contributed to the production of a food supply sufficient for both animals and humans despite some negative environmental impact.Sustaining food production by increasing N use efficiency in intensive cropping systems has become a major concern for scientists,environmental groups,and agricultural policymakers worldwide.In high-yielding maize systems the major method of N loss is nitrate leaching.In this review paper,the characteristic of nitrate movement in the soil,N uptake by maize as well as the regulation of root growth by soil N availability are discussed.We suggest that an ideotype root architecture for efficient N acquisition in maize should include(i) deeper roots with high activity that are able to uptake nitrate before it moves downward into deep soil;(ii) vigorous lateral root growth under high N input conditions so as to increase spatial N availability in the soil;and(iii) strong response of lateral root growth to localized nitrogen supply so as to utilize unevenly distributed nitrate especially under limited N conditions. | MI GuoHua,CHEN FanJun,WU QiuPing,LAI NingWei,YUAN LiXing & ZHANG FuSuo* Key Laboratory of Plant Nutrition,MOA Key Laboratory of Plant-Soil Interaction,MOE College of Resources and Environmental Science,China Agricultural University,Beijing 100193,China | 2010 | Science China(Life Sciences)2010，53，12： | 35 |
| 2 | Seasonal variation in surface ozone and its regional characteristics at global atmosphere watch stations in China显示文摘We investigated the seasonal and spatial ozone variations in China by using three-year surface ozone observation data from the six Chinese Global Atmosphere Watch(GAW)stations and tropospheric column ozone data from satellite retrieval over the period2010–2012. It is shown that the seasonal ozone variations at these GAW stations are rather different, particularly between the western and eastern locations. Compared with western China, eastern China has lower background ozone levels. However, the Asian summer monsoon(ASM) can transport photochemical pollutants from the southern to the northern areas in eastern China, leading to a northward gradual enhancement of background ozone levels at the eastern GAW stations. Over China, the tropospheric column ozone densities peak during spring and summer in the areas that are directly and/or indirectly affected by the ASM, and the peak time lags from the south to the north in eastern China. We also investigated the regional representativeness of seasonal variations of ozone at the six Chinese GAW stations using the yearly maximum tropospheric column month as indicator.The results show that the seasonal variation characteristics of ozone revealed by the Chinese GAW stations are typical, with each station having a considerable large surrounding area with the ozone maximum occurring at the same month. Ozone variations at the GAW stations are influenced by many complex factors and their regional representativeness needs to be investigated further in a broader sense. | Ningwei Liu Weili Lin Jianzhong Ma Wanyun Xu Xiaobin Xu | 2019 | Journal of Environmental Sciences2019，31，3： | 23 |
| 3 | Comparison of Two Air Pollution Episodes over Northeast China in Winter 2016/17 Using Ground-Based Lidar显示文摘This study analyzes and compares aerosol properties and meteorological conditions during two air pollution episodes in 19–22(E1) and 25–26(E2) December 2016 in Northeast China. The visibility, particulate matter(PM) mass concentration, and surface meteorological observations were examined, together with the planetary boundary layer(PBL) properties and vertical profiles of aerosol extinction coefficient and volume depolarization ratio that were measured by a ground-based lidar in Shenyang of Liaoning Province, China during December 2016–January 2017.Results suggest that the low PBL height led to poor pollution dilution in E1, while the high PBL accompanied by low visibility in E2 might have been due to cross-regional and vertical air transmission. The PM mass concentration decreased as the PBL height increased in E1 while these two variables were positively correlated in E2. The enhanced winds in E2 diffused the pollutants and contributed largely to the aerosol transport. Strong temperature inversion in E1 resulted in increased PM2.5 and PM10 concentrations, and the winds in E2 favoured the southwesterly transport of aerosols from the North China Plain into the region surrounding Shenyang. The large extinction coefficient was partially attributed to the local pollution under the low PBL with high ground-surface PM mass concentrations in E1,whereas the cross-regional transport of aerosols within a high PBL and the low PM mass concentration near the ground in E2 were associated with severe aerosol extinction at high altitudes. These results may facilitate better understanding of the vertical distribution of aerosol properties during winter pollution events in Northeast China. | Yanjun MA Hujia ZHAO Yunsheng DONG Huizheng CHE Xiaoxiao LI Ye HONG Xiaolan LI Hongbin YANG Yuche LIU Yangfeng WANG Ningwei LIU Cuiyan SUN | 2018 | Journal of Meteorological Research2018，32，2： | 5 |
| 4 | Atmospheric extinction properties in Shenyang,China显示文摘Atmospheric visibility impairment due to human activities is becoming increasingly significant in metropolitan Shenyang,China.In this study,hourly data of relevant factors throughout the year 2010 in Shenyang were used to evaluate the local atmospheric extinction properties.The results show that the average coefficient of total extinction and aerosol single-scattering albedo in 2010 were 622.72 Mm^(-1)and 0.87,respectively,values that are characteristic of the 'municipal pollution type'.Visibility is most impaired during winter and especially in January.The coefficient of total extinction exhibits a single daily cycle with a maximum at 5-6 am and a minimum at 3 pm.The mean extinction contributions of the constituents,from high to low,were particle scattering(87.49%),particle absorption,gas absorption,and gas scattering.The extinction contribution of gas molecules was little more than 4.5%,far smaller than that of particles.Scattering by particles was the main contributor to extinction,especially in the morning and around midnight. | Ningwei Liu Yanjun Ma Jianzhong Ma Yangfeng Wang Suying Yang Liguang Li | 2015 | Particuology2015，13，1： | 3 |
| 5 | Studies on Tomato Seedling Quality Indices Under Simulated Shipping and Storage Conditions显示文摘Indices of the tomato seedling quality maintenance level after production before field planting were studied through simulated experiments, small—scale operation, indoor analyses and measurements, and field observation. The results showed that under simulated shipping and storage conditions, seedling quality change following different durations (days) of shipping and storage was correlated significantly or even very significantly with certain physiological and morphological indices. With various measured indices following different periods of shipping and storage treatment subjected to multinomial successive regressive correlation analysis, the principal factors influencing seedling quality maintenance level are identified to be chlorophyll content →dry short weight → leaf freshness index in order of their importance. Significance analysis with multinomial fitted equation indicated that correlations between any one of above three factors and the growth index after field planting reached very significant difference level. | NINGWei GEXiao-guang LITian-lai | 2004 | Agricultural Sciences in China2004，3，12： | 3 |
| 6 | Altered microRNA expression in cisplatin-resistant ovarian cancer cellsand upregulation of miR-130a associated with MDR1/P-glycoprotein-mediated drugresistance显示文摘 | Lingyun Yang Ningwei Li Hongjing Wang Xibiao Jia Xue Wang Juan Luo | 2012 | Oncology Reports2012，，2： | 1 |
| 7 | Synthesis of magnetic molecularly imprinted polymer particles for selective adsorption and separation of dibenzothiophene 显示文摘 | Li Hui Xu Wanzhen Wang Ningwei | 2012 | MicrochimActa2012，179，： | 1 |
| 8 | Mechanical analysis on secondary Lining damaged by local load under earthquake显示文摘 | Yu Yuanyuan Guo Xun Wang Ningwei | | 0，，： | 1 |
| 9 | Interpretive Structural Modeling of Interactive Risks 显示文摘 | Rick Gorvett Ningwei Liu | 2006 | Enterprise Risk Management Sympo- sium Society of Actuaries2006，，8： | 1 |
| 10 | Regulation of ascorbate peroxidase at the transcript level is involved in tolerance to postharvest water deficit stress in the cut rose ( Rosa hybrida L.) cv. Samantha显示文摘 | Jishi Jin Ningwei Shan Nan Ma Jinhe Bai Junping Gao | 2006 | Postharvest Biology and Technology2006，，3： | 1 |
| 11 | Projecctive change between two classes of (a ,β) -metrics 显示文摘 | Ningwei Cui Yi-Bing Shen | 2009 | Diff Geom and its Applications2009，27，： | 1 |
| 12 | Altered microRNA expression in cisplatin-resistant ovarian cancer cellsand upregulation of miR-130a associated with MDR1/P-glycoprotein-mediated drugresistance显示文摘 | Lingyun Yang Ningwei Li Hongjing Wang Xibiao Jia Xue Wang Juan Luo | 2012 | Oncology Reports2012，，2： | 1 |
| 13 | On Cultural Barrier Problems in English Writing显示文摘As the cross-cultural communication activities have become increasingly frequent,teaching of writing,one of cross-cultural communication activities,sets“developing students’cross-cultural awareness”as one of its goals.However,traditional language teaching,which focuses on linguistic knowledge rather than cultural knowledge,results in the cultural barrier problems among students.This paper analyzes the manifestation of cultural barriers from the aspect of language and puts forward some corresponding approaches and methods. | Che Ningwei | 2023 | Sino-US English Teaching2023，20，2： | 0 |
| 14 | Constraints on Transfer Errors显示文摘As the understanding of first language transfer goes forward,the error resulted from first language is widely considered as an unavoidable phenomenon in second language learning.This paper is to analyze some major constraints on first language transfer,including markedness,learners’language proficiency level,psychotypology,and formal instruction.The purpose is to seek solutions to reduce first language transfer errors. | CHE Ningwei | 2019 | US-China Foreign Language2019，17，10： | 0 |
| 15 | Generation and Simulation of Basic Maneuver Action Library for 6-DOF Aircraft by Reinforcement Learning显示文摘The development of modern air combat requires aircraft to have certain intelligent decision-making ability.In some of the existing solutions,the automatic control of aircraft is mostly composed of the upper mission decision and the lower control system.Although the underlying PID(Proportional Integral Derivative)based controller has a good performance in stable conditions,it lacks stability in complex environments.So,we need to design a new system for the problem of aircraft decision making.Studies have shown that the behavior of an aircraft can be viewed as a combination of several basic maneuvers.The establishment of aircraft basic motion library will effectively reduce the difficulty of upper aircraft control.Given the good performance of reinforcement learning to solve the problem with continuous action space,in this paper,reinforcement learning is used to control the aircraft’s rod and rudder to generate a basic maneuver action library,and the flight of the aircraft under the 6 degrees of freedom(6-DOF)simulation engine is effectively controlled.The simulation results verify the feasibility of the method on a visual simulation platform. | Jinlin Wang Jitao Teng Yang He Hongyu Yang Yulong Ji Zhikun Tang Ningwei Bai | 2022 | Journal on Internet of Things2022，4，2： | 0 |
| 16 | New minimal surfaces in the hyperbolic space显示文摘We obtain new complete minimal surfaces in the hyperbolic space H3, by using Ribaucour transformations. Starting with the family of spherical catenoids in H^3 found by Mori(1981), we obtain 2-and 3-parameter families of new minimal surfaces in the hyperbolic space, by solving a non trivial integro-differential system. Special choices of the parameters provide minimal surfaces whose parametrizations are defined on connected regions of R^2 minus a disjoint union of Jordan curves. Any connected region bounded by such a Jordan curve, generates a complete minimal surface, whose boundary at infinity of H^3 is a closed curve. The geometric properties of the surfaces regarding the ends, completeness and symmetries are discussed. | CUI NingWei TENENBLAT Keti | 2017 | Science China Mathematics2017，60，9： | 0 |
| 17 | On the Choice of Reading Materials in TESL显示文摘The choice of reading materials partly decides the effectiveness of classroom reading instructions in TESL.This paper analyses the cognitive process of reading and some problems in classroom reading instructions of reading course,and suggests three basic principles for choosing reading materials,including the principle of comprehensibility reading materials,readers’familiarity with the topics of the reading materials,and the sufficiency of reading materials. | CHE Ningwei | 2019 | Sino-US English Teaching2019，16，10： | 0 |
| 18 | METHOD FOR ALONG-TRACK DUAL-ANTENNA AIRBORNE RADAR'S GMTI WHEN THE ATENNA ERROR CHANGES PULSE TO PULSE显示文摘This paper presents a joint method of Doppler Beam Sharpen (DBS) imaging and Signal Subspace Processing (SSP) to achieve Ground Moving Target Indication(GMTI) for along- track dual-antenna airborne radar. When the error of the two antennas (also refers to channels) changes pulse to pulse, the method SSP is used to precisely calibrate the two antennas’ DBS images, then to detect the ground moving targets in the difference image of the two calibrated images. The method DBS-SSP is proved to offer performance improvement on the actually measured data and simulated data. | NingWei LiaoGuisheng | 2005 | Journal of Electronics(China)2005，22，3： | 0 |
| 19 | Multilevel air quality evolution in Shenyang:Impact of elevated point emission reduction显示文摘Visibility observed at different altitudes is favorable to understand the causes of air pol-lution.We conducted 4-years of observations of visibility at 2.8 and 60 m and particulate matter(PM)concentrations from 2015 to 2018 in Shenyang,a provincial city in Northeast China.The results indicated that visibility increased with the increasing height in winter(especially at night),and decreased with height in summer(especially at the daytime).PM concentration exhibited opposite vertical variation to visibility,reflecting that visibility de-grades with the increase of aerosol concentration in the air.The radiosonde meteorological data showed that weak turbulence in the planetary boundary layer(PBL)in winter favored aerosols'accumulation near the surface.Whereas in summer,unstable atmospheric con-ditions,upper-level moister environment,and regional transport of air pollutants resulted in the deterioration of upper-level visibility.Inter-annual variation in the two-level visibility indicated that the upper-level visibility improved more significantly than low-level visibil-ity,much likely due to the reduction in emission of elevated point sources in Shenyang.Our study suggested that strengthening the control of surface non-point emissions is a promis-ing control strategy to improve Shenyang air quality. | Xiaolan Li Guiqian Tang Liguang Li Weijun Quan Yangfeng Wang Ziqi Zhao Ningwei Liu Ye Hong Yanjun Ma | 2022 | Journal of Environmental Sciences2022，34，3： | 0 |
| 20 | Understanding the Principle of Arbitrariness From the Perspective of Saussure’s Theory Linguistics显示文摘Arbitrariness,one of the basic principles of language,is the basis of Saussure’s theory of general linguistics.Comprehension of arbitrariness largely helps to have a better understanding of the design features of language,such as convention,variability and invariability,creativity of language,and language value.This paper explores the relationship between arbitrariness and these design features,aiming to shed light on the nature of language. | Che Ningwei | 2023 | US-China Foreign Language2023，21，3： | 0 |
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