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| 1 | Enhanced secondary pollution offset reduction of primary emissions during COVID-19 lockdown in China显示文摘To control the spread of the 2019 novel coronavirus(COVID-19),China imposed nationwide restrictions on the movement of its population(lockdown)after the Chinese New Year of 2020,leading to large reductions in economic activities and associated emissions.Despite such large decreases in primary pollution,there were nonetheless several periods of heavy haze pollution in eastern China,raising questions about the well-established relationship between human activities and air quality.Here,using comprehensive measurements and modeling,we show that the haze during the COVID lockdown was driven by enhancements of secondary pollution.In particular,large decreases in NOx emissions from transportation increased ozone and nighttime NO_(3)radical formation,and these increases in atmospheric oxidizing capacity in turn facilitated the formation of secondary particulate matter.Our results,afforded by the tragic natural experiment of the COVID-19 pandemic,indicate that haze mitigation depends upon a coordinated and balanced strategy for controlling multiple pollutants. | Xin Huang Aijun Ding Jian Gao Bo Zheng Derong Zhou Ximeng Qi Rong Tang Jiaping Wang Chuanhua Ren Wei Nie Xuguang Chi Zheng Xu Liangduo Chen Yuanyuan Li Fei Che Nini Pang Haikun Wang Dan Tong Wei Qin Wei Cheng Weijing Liu Qingyan Fu Baoxian Liu Fahe Chai Steven JDavis Qiang Zhang Kebin He | 2021 | National Science Review2021，8，2： | 47 |
| 2 | Identification of coastal wetlands of international importance for waterbirds:a review of China Coastal Waterbird Surveys 2005–2013显示文摘Background:China's coastal wetlands belong to some of the most threatened ecosystems worldwide.The loss and degradation of these wetlands seriously threaten waterbirds that depend on wetlands.Methods:The China Coastal Waterbird Census was organized by volunteer birdwatchers in China's coastal region.Waterbirds were surveyed synchronously once every month at 14 sites,as well as irregularly at a further 18 sites,between September 2005 and December 2013.Results:A total of 75 species of waterbirds met the 1 % population level Ramsar listing criterion at least once at one site.The number of birds of the following species accounted for over 20 % of the total flyway populations at a single site:Mute Swan(Cygnus olor),Siberia Crane(Grus leucogeranus),Far Eastern Oystercatcher(Haematopus osculans),Bar-tailed Godwit(Limosa lapponica),Spotted Greenshank(Tringa guttifer),Great Knot(Calidris tenuirostris),Spoon-billed Sandpiper(Calidris pygmeus),Saunders' s Gull(Larus saundersi),Relict Gull(Larus relictus),Great Cormorant(Phalacrocorax carbo),Eurasian Spoonbill(Platalea leucorodia),Black-faced Spoonbill(Platalea minor) and Dalmatian Pelican(Pelecanus crispus).A total of 26 sites supported at least one species of which their number met the1 % criterion.Forty-two species met the 1 % criterion in the Yellow River Delta,Shandong;29 at the Cangzhou coast,Hebei and 26 species at the Lianyungang coast,Jiangsu.Conclusions:The results highlight the international importance of China's coastal wetlands for waterbirds.This study also demonstrates that participation of local birdwatchers in waterbird surveys results in data that are invaluable not only for understanding the current status of waterbirds in China's coastal regions but also for waterbird conservation and management. | Qingquan Bai Jianzhong Chen Zhihong Chen Guotai Dong Jiangtian Dong Wenxiao Dong Vivian Wing Kan Fu Yongxiang Han Gang Lu Jing Li Yang Liu Zhi Lin Derong Meng Jonathan Martinez Guanghui Ni Kai Shan Renjie Sun Suixing Tian Fengqin Wang Zhiwei Xu Yat-tung Yu Jin Yang Zhidong Yang Lin Zhang Ming Zhang Xiangwu Zeng | 2015 | Chinese Birds2015，，3： | 20 |
| 3 | Data-based Fault Tolerant Control for Affine Nonlinear Systems Through Particle Swarm Optimized Neural Networks显示文摘In this paper, a data-based fault tolerant control(FTC) scheme is investigated for unknown continuous-time(CT)affine nonlinear systems with actuator faults. First, a neural network(NN) identifier based on particle swarm optimization(PSO) is constructed to model the unknown system dynamics. By utilizing the estimated system states, the particle swarm optimized critic neural network(PSOCNN) is employed to solve the Hamilton-Jacobi-Bellman equation(HJBE) more efficiently.Then, a data-based FTC scheme, which consists of the NN identifier and the fault compensator, is proposed to achieve actuator fault tolerance. The stability of the closed-loop system under actuator faults is guaranteed by the Lyapunov stability theorem. Finally, simulations are provided to demonstrate the effectiveness of the developed method. | Haowei Lin Bo Zhao Derong Liu Cesare Alippi | 2020 | IEEE/CAA Journal of Automatica Sinica2020，7，4： | 13 |
| 4 | Residential Energy Scheduling for Variable Weather Solar Energy Based on Adaptive Dynamic Programming显示文摘The residential energy scheduling of solar energy is an important research area of smart grid. On the demand side, factors such as household loads, storage batteries, the outside public utility grid and renewable energy resources, are combined together as a nonlinear, time-varying, indefinite and complex system, which is difficult to manage or optimize. Many nations have already applied the residential real-time pricing to balance the burden on their grid. In order to enhance electricity efficiency of the residential micro grid, this paper presents an action dependent heuristic dynamic programming(ADHDP) method to solve the residential energy scheduling problem. The highlights of this paper are listed below. First,the weather-type classification is adopted to establish three types of programming models based on the features of the solar energy. In addition, the priorities of different energy resources are set to reduce the loss of electrical energy transmissions.Second, three ADHDP-based neural networks, which can update themselves during applications, are designed to manage the flows of electricity. Third, simulation results show that the proposed scheduling method has effectively reduced the total electricity cost and improved load balancing process. The comparison with the particle swarm optimization algorithm further proves that the present method has a promising effect on energy management to save cost. | Derong Liu Yancai Xu Qinglai Wei Xinliang Liu | 2018 | IEEE/CAA Journal of Automatica Sinica2018，5，1： | 13 |
| 5 | Optimal Constrained Self-learning Battery Sequential Management in Microgrid Via Adaptive Dynamic Programming显示文摘This paper concerns a novel optimal self-learning battery sequential control scheme for smart home energy systems.The main idea is to use the adaptive dynamic programming(ADP) technique to obtain the optimal battery sequential control iteratively. First, the battery energy management system model is established, where the power efficiency of the battery is considered. Next, considering the power constraints of the battery, a new non-quadratic form performance index function is established, which guarantees that the value of the iterative control law cannot exceed the maximum charging/discharging power of the battery to extend the service life of the battery.Then, the convergence properties of the iterative ADP algorithm are analyzed, which guarantees that the iterative value function and the iterative control law both reach the optimums. Finally,simulation and comparison results are given to illustrate the performance of the presented method. | Qinglai Wei Derong Liu Yu Liu Ruizhuo Song | 2017 | IEEE/CAA Journal of Automatica Sinica2017，4，2： | 13 |
| 6 | A novel policy iteration based deterministic Q-learning for discrete-time nonlinear systems显示文摘In this paper, a novel iterative Q-learning algorithm, called 'policy iteration based deterministic Qlearning algorithm', is developed to solve the optimal control problems for discrete-time deterministic nonlinear systems. The idea is to use an iterative adaptive dynamic programming(ADP) technique to construct the iterative control law which optimizes the iterative Q function. When the optimal Q function is obtained, the optimal control law can be achieved by directly minimizing the optimal Q function, where the mathematical model of the system is not necessary. Convergence property is analyzed to show that the iterative Q function is monotonically non-increasing and converges to the solution of the optimality equation. It is also proven that any of the iterative control laws is a stable control law. Neural networks are employed to implement the policy iteration based deterministic Q-learning algorithm, by approximating the iterative Q function and the iterative control law, respectively. Finally, two simulation examples are presented to illustrate the performance of the developed algorithm. | WEI QingLai LIU DeRong | 2015 | Science China Chemistry2015，58，12： | 8 |
| 7 | Development of a new method for analyzing free aluminum ions(Al^(3+)) in seafood using HPLC-ICP-MS显示文摘This paper presents a novel method for simultaneous online examination of free aluminum ions(Al3+)in seafood,using solidphase extraction and high-performance liquid chromatography online with inductively coupled plasma mass spectrometry(SPEHPLC-ICP-MS),without post-column reaction.The optimum conditions for chromatographic separation of Al3+were achieved using an IonPac CS5A analytical column with an IonPac CG5A guard column.The mobile phase consisted of 0.040 mol/L LiOH,0.0060 mol/L 2,6-pyridinedicarboxylic acid,and 0.090 mol/L CH3COOH(pH 4.7).The free Al3+ions in seafood were extracted by shaking with the mobile phase at 70°C for 2 h.SPE was conducted using an Oasis MCX,3cc/60 mg,30μm column,which was activated and equilibrated with 2 mL of methanol and 4 mL of deionized water before use.HCl(0.075 mol/L,2 mL)was used to wash inorganic Al from the SPE column.The standard recoveries of Al3+were all above 89%and the relative standard deviations were all below 5%.The proposed method was successfully used for the examination of Al3+in seafood samples,and the results were similar to those obtained using the static equilibrium method. | SHANG DeRong ZHAO YanFang ZHAI YuXiu NING JinSong DING HaiYan SHENG XiaoFeng | 2013 | Chinese Science Bulletin2013，58，35： | 8 |
| 8 | News Keyword Extraction Algorithm Based on Semantic Clustering and Word Graph Model显示文摘The internet is an abundant source of news every day. Thus, efficient algorithms to extract keywords from the text are important to obtain information quickly. However, the precision and recall of mature keyword extraction algorithms need improvement. TextRank, which is derived from the PageRank algorithm, uses word graphs to spread the weight of words. The keyword weight propagation in Text Rank focuses only on word frequency. To improve the performance of the algorithm, we propose Semantic Clustering TextRank(SCTR), a semantic clustering news keyword extraction algorithm based on TextRank. Firstly, the word vectors generated by the Bidirectional Encoder Representation from Transformers(BERT) model are used to perform k-means clustering to represent semantic clustering. Then, the clustering results are used to construct a TextRank weight transfer probability matrix. Finally,iterative calculation of word graphs and extraction of keywords are performed. The test target of this experiment is a Chinese news library. The results of the experiment conducted on this text set show that the SCTR algorithm has greater precision, recall, and F1 value than the traditional TextRank and Term Frequency-Inverse Document Frequency(TF-IDF) algorithms. | Ao Xiong Derong Liu Hongkang Tian Zhengyuan Liu Peng Yu Michel Kadoch | 2021 | Tsinghua Science and Technology2021，26，6： | 7 |
| 9 | 疫情期间全球空气质量变化:臭氧响应的区域间差异显示文摘疫情期间全球各地一次排放大幅削减,而臭氧等二次污染的响应则存在着区域间差异.结合地面和卫星观测发现,同在氮氧化物大幅下降的情况下,臭氧在东亚和欧洲呈现出可达14ppb的上升信号,而北美则下降为主(约2–4ppb).我们结合气象分析和臭氧敏感性进一步讨论了臭氧响应差异性的原因,一方面受臭氧与前体物间关系的影响;另一方面来自于气象,尤其是温度.研究明晰了人为排放,化学和气象三者的内在关联,强调了在臭氧控制过程中考虑前体物削减和气象条件协同的重要性. | Rong Tang Xin Huang Derong Zhou Haikun Wang Jiawei Xu Aijun Ding | 2021 | Atmospheric and Oceanic Science Letters2021，14，4： | 5 |
| 10 | RESPONSE OF SEDIMENT DISCHARGE TO ECOHYDROLOGICAL FACTORS IN LUERGOU CATCHMENT BASED ON WAVELET ANALYSIS显示文摘The response of sediment discharge rate to the following four ecohydrological factors: temperature, rainfall, evapotranspiration (ET), and stream flow was evaluated by conducting wavelet analysis on Luergou small catchment data ranging from 1982 to 2000. For sediment discharge rate, there was an overall trend of reduction that included a periodic oscillation of 6 to 7 years per cycle. Rainfall also had an overall trend of reduction that included two periodic oscillations of 7 years per cycle and 2 years per cycle, respectively. Stream flow had the same trend as rainfall but had one periodic oscillation of 6 to 7 years per cycle. In contrast with rainfall and stream flow, the trends for temperature and ET each showed an overall increasing tendency, and both had the same two periodic oscillations of 6 to 7 years per cycle and 4 years per cycle, respectively. The sediment discharge rate had significant relationships with the four ecohydrological factors, with stream flow and rainfall having positive correlations, while ET and temperature had negative correlations. The correlation between ET and sediment discharge rate became stronger when ET was compared to the sediment discharge rate of the following year. The relationship between sediment discharge rate and the four ecohydrological factors was further expressed by the multi-linear regression model that was constructed, which makes sediment discharge rate a function of stream flow, rainfall, ET, and temperature. | Yuan TIAN Xinxiao YU Derong SU Xin YANG | 2007 | International Journal of Sediment Research2007，22，1： | 4 |
| 11 | High-throughput development of genome-wide locus-specific informative SSR markers in wheat显示文摘Dear Editor,Although simple sequence repeat(SSR)markers are not new,they are still useful and often used markers in molecular mapping and marker-assisted breeding,particularly in developing countries.However,locus-specific SSR markers could be more useful and informative in wheat breeding and genetic studies.In the present study,221,911 locus-specific SSR markers were designed.Verification of polymorphisms showed that the proportion of polymorphic markers increases with an increase in SSR size.Evaluation of the | Lei Li Fayu Sun Di Wu Fei Zhen Guihua Bai Derong Gao Tao Li | 2017 | Science China(Life Sciences)2017，60，6： | 4 |
| 12 | Impact Assessment of Climate Change on Forestry Development in China显示文摘Forestry and forest ecosystem are highly sensitive to climate change.At present,studies about the responses of forests to climate change in China are more focused on physical influences of climate change.This paper firstly divided the key impact factors of climate change on forest and forestry developing into direct factors and indirect factors,and then made an assessment on climate change affecting future forestry development from the aspect of forest products and ecological services.On this basis,the adaptation countermeasures of China's forestry development to climate change were proposed. | LIN Derong 1,2 WU Shuirong1 LI Zhiyong1 1.Research Institute of Forestry Policy and Information,Chinese Academy of Forestry,Beijing 100091,P.R.China 2.Economics School,Shandong Institute of Business and Technology,Yantai 264005,P.R.China | 2010 | Chinese Forestry Science and Technology2010，9，3： | 3 |
| 13 | ERK signaling pathway may induce gemcitabine chemoresistance in pancreatic cancer cell line SW1990 by regulating the expression of mdr-1 and RRM1 gene显示文摘调查在细胞外的调整信号的激酶(英皇家空军之阶级最低之兵) 之间的关系的目的小径,多在 gemcitabine (宝石) 的药抵抗基因(mdr-1 ) ,核糖核甙酸还原酶 M1 (RRM1 ) 基因和他们的角色在胰腺的癌症房间的化学抵抗力衬里 SW1990。宝石抵抗房间建模的方法被一个逐步的方法构造。Immunohistochemistry 被用来在半在确定的房间紧张测量英皇家空军之阶级最低之兵蛋白质(ERK1/2 ) 的表示量的方法。mdr-1 和 RRM1 的 mRNA 表示被 RT-PCR 检测。MTT 试金被执行决定 IC50 价值。确定的宝石抵抗的房间拉紧的结果能在宝石(0, 30, 60, 100, 150 和 200 nmol/L ) 的中等包含的不同集中层次获得稳定的生长和经过能力。英皇家空军之阶级最低之兵蛋白质, mdr-1 和 RRM1 基因的表示被提高由宝石集中的增加伴随了。在 mdr-1, RRM1 表示和宝石抵抗水平之间有高度积极的关联(r = 0.960, P = 0.002 并且 r = 0.966, P = 0.002 ) 。英皇家空军之阶级最低之兵蛋白质的表示也与 mdr-1 和 RRM1 水平相关(r =−0.943, P = 0.005 并且 r =−0.883, P = 0.02 ) 。在 200 nmol/L 的宝石抵抗水平, ERK1/2 的灰规模价值是 164.22 ± 13.17, mdr-1/β-actin 和 RRM1/β-actin 是 1.41 ± 0.04 和 1.45 ± 0.18 分别地;在与英皇家空军之阶级最低之兵小径禁止者 U0126 对待以后,这些价值同时地减少了到 186.85 ± 13.14, 0.2 3 ± 0.02 和 0.21 ± 0.03 分别地;相反地, ERK1/2 灰规模价值是 106.55 ± 16.45, mdr-1/β-actin 和 RRM1/β-actin 是 1.50 ± 0.07 和 1.52 ± 0.12,分别地它介绍了一个趋势在与英皇家空军之阶级最低之兵小径使活跃之物 EGF 对待以后,同时地增加。在 0 nmol/L 和 200 个 nmol/L 层次的宝石抵抗的房间的 IC50 价值分别地是 4.104 和 10.20。在与 U0126 对待以后,这些价值分别地减少了到 3.26 和 4.50;当与 EGF 对待时, IC50 价值分别地增加了到 8.89 和 17.17。英皇家空军之阶级最低之兵小径可以在 mdr-1 和 RRM1 基因表示的规定通过参予在胰腺的房间线 SW1990 导致 GEM-chemoresistance 的结论。 | Denglin Chen Derong Xie Shuangshuang Guo Qiong Yang Zhimin Jiang Zhuofei Bi Wen Ma | 2009 | The Chinese-German Journal of Clinical Oncology2009，8，1： | 3 |
| 14 | Synthesis and host-guest properties of pillar[6]arenes显示文摘A facile method for the synthesis of pillar[6]arenes was developed.A series of pillar[6]arenes were prepared with FeCl 3 as catalyst and chloroform as solvent at room temperature in moderate yields(30%-40%).Their host-guest properties with n-cetyltrimethyl ammonium bromide were investigated by 1 HNMR.The results showed that high selectivity in the host-guest relationship became apparent between pillar[6]arenes and pillar[5]arenes based on the different size of the inner cavity. | TAO HongQi CAO DeRong LIU LuZhi KOU YuHui WANG LingYun MEIER Herbert | 2012 | Science China Chemistry2012，55，2： | 3 |
| 15 | Development and characterization of synthetic amphiploids of Oryza sativa and Oryza latifolia显示文摘Oryza sativa and Oryza latifolia belong to the AA and CCDD genomes of Oryza, respectively. In this study, amphiploids were obtained from the tube seedlings of O. sativa 9 O. latifolia F1 hybrids by treatment with colchicine, an agent for chromosome doubling. Subsequently, amphiploids were investigated using the methods of morphology, genomic in situ hybridization, and molecular markers. Amphiploids were characterized by a shorter plant height, larger diameter of stem, longer and wider leaves, darker leaf color, decreased spikelets per panicle and panicle length, and larger spikelets and anthers than the original F1 hybrid. Based on the mitotic metaphase chromosome number of the investigated root tips, the somatic chromosome number of the amphiploid is 2n = 72.Additionally, the amphiploid is an allohexaploid, and its genomic constitution is AACCDD by genomic in situ hybridization analysis. Finally, the amphiploids were identified to be true using 37 polymorphic markers at the DNA level. | Chuandeng Yi Mingsen Wang Wei Jiang Derong Wang Xiaojun Cheng Ying Wang Yong Zhou Guohua Liang Minghong Gu | 2015 | Science Bulletin2015，60，23： | 3 |
| 16 | Strongly connected components based efficient computation of page rank显示文摘In this paper,an efficient page rank (PR)exact algorithm is proposed,which can improve the computation efficiency without sacrificing results accuracy.The existing exact algorithms are generally based on the original power method (PM).In order to reduce the number of I/Os required to improve efficiency,they partition the big graph into multiple smaller ones that can be totally fitted in memory.The algorithm proposed in this paper can further reduce the required number of I/Os.Instead of partitioning the graph into the general subgraphs,our algorithm partitions graph into a special kind of subgraphs:SCCs (strongly connected components), the nodes in which are reachable to each other.By exploiting the property of SCC,some theories are proposed,based on which the computation iterations can be constrained on these SCC subgraphs.Our algorithm can reduce lots of I/Os and save a large amount of computations,as well as keeping the results accuracy.In a word,our algorithm is more efficient among the existing exact algorithms.The experiments demonstrate that the algorithms proposed in this paper can make an obvious efficiency improvement and can attain high accurate results. | Hongguo YANG Derong SHEN Yue KOU Tiezheng NIE Ge YU | 2018 | Frontiers of Computer Science2018，12，6： | 2 |
| 17 | Development and verification of the cytoplasmic-nuclear male sterile soybean line NJCMS1A and its maintainer NJCMS1B显示文摘THE first cytoplasmic male sterile soybean line was reported by Davis in a U.S. Patent, but no further information has been released since then. Sun et al. developed a cytoplasmic-nuclear male sterile soy- | Derong Ding Junyi Gai Zhanglin Cui Shouping Yang Jiaxun Qiu | 1999 | Chinese Science Bulletin1999，44，2： | 2 |
| 18 | D-A-π-A organic sensitizers containing a benzothiazole moiety as an additional acceptor for use in solar cells显示文摘Three novel triphenylamine-based D-A-π-A-featured dyes (Z1-Z3) have been designed, synthesized and characterized for use in dye-sensitized solar cells. Benzothiazole was incorporated as an additional acceptor, which greatly enhanced the molar extinction coefficient of the dyes. Various conjugated linkers, such as benzene, furan and thiophene, were also introduced to configure the novel D-A-π-A framework in order to prolong electron flow and active transportation. Among all dyes, Z2 containing a thiophene linker exhibited the maximum overall conversion efficiency (η) of 4.16% (Jsc = 9.27 mA cm-2 , Voc = 642 mV, FF = 0.70) under standard global AM 1.5 G solar condition. | ZENG Juan ZHANG TengLong ZANG XuFeng KUANG DaiBin MEIER Herbert CAO DeRong | 2013 | Science China Chemistry2013，56，4： | 2 |
| 19 | Explicit classification for torsion cyclic subgroups of rational points with even orders of elliptic curves显示文摘For elliptic curves E over the rationals Q, the classification according to their torsion subgroups Etors(Q) of rational points has been studied. When Etors(Q) are cyclic groups with even orders, the classification is given with explicit critria, and the generators of the torsion groups are also explicitly presented in each case. These results, together with the recent re- | Derong Qiu Xianke Zhang | 1999 | Chinese Science Bulletin1999，44，21： | 2 |
| 20 | Genetic dissection of husk number and length across multiple environments and fine-mapping of a major-effect QTL for husk number in maize(Zea mays L.)显示文摘Husk number(HN)and husk length(HL)influence the mechanical harvesting of maize grain.We investigated the genetic basis of HN and HL using a population of 204 recombinant inbred lines phenotypically evaluated in five environments.The two husk traits showed broad phenotypic variation and high heritability.Nine stable quantitative trait loci(QTL)were identified by single-environment mapping,comprising four QTL for HN and five for HL,and three QTL explained>10%of the phenotypic variation.Joint mapping revealed 22 additive QTL and 46 epistatic QTL.Both additive and epistatic(additive×additive)effects as well as a few large-effect QTL and some minor-effect QTL appeared to contribute to the genetic architecture of HN and HL.The QTL for HN located on chromosome 7,q HN7,which accounted for^20%of phenotypic variation,was detected in all five environments.q HN7 was fine-mapped to a 721.1 kb physical region based on the maize B73 Ref Gen_v3 genome assembly.Within this interval,four genes associated with plant growth and development were selected as candidate genes.The results will be useful for improvement of maize husk traits by molecular breeding and provide a basis for the cloning of q HN7. | Guangfei Zhou Yuxiang Mao Lin Xue Guoqing Chen Huhua Lu Mingliang Shi Zhenliang Zhang Xiaolan Huang Xudong Song Derong Hao | 2020 | The Crop Journal2020，8，6： | 2 |
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