|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Significant concurrent decrease in PM_(2.5) and NO_(2) concentrations in China during COVID-19 epidemic显示文摘The strict control measures and social lockdowns initiated to combat COVID-19 epidemic have had a notable impact on air pollutant concentrations.According to observation data obtained from the China National Environmental Monitoring Center,compared to levels in 2019,the average concentration of NO_(2) in early 2020 during COVID-19 epidemic has decreased by 53%,50%,and 30%in Wuhan city,Hubei Province(Wuhan excluded),and China(Hubei excluded),respectively.Simultaneously,PM_(2.5) concentration has decreased by 35%,29%,and 19%in Wuhan,Hubei(Wuhan excluded),and China(Hubei excluded),respectively.Less significant declines have also been found for SO_(2) and CO concentrations.We also analyzed the temporal variation and spatial distribution of air pollutant concentrations in China during COVID-19 epidemic.The decreases in PM_(2.5) and NO_(2) concentrations showed relatively consistent temporal variation and spatial distribution.These results support control of NO x to further reduce PM_(2.5) pollution in China.The concurrent decrease in NOx and PM_(2.5) concentrations resulted in an increase of O3 concentrations across China during COVID-19 epidemic,indicating that coordinated control of other pollutants is needed. | Biiuu Chu Shuping Zhang Jun Liu Qingxin Ma Hong He | 2021 | Journal of Environmental Sciences2021，33，1： | 21 |
| 2 | Robust stability and H-infinity control for uncertain discrete-time Markovian jump singular systems显示文摘The robust stability and stabilization, and H-infinity control problems for discrete-time Markovian jump singular systems with parameter uncertainties are discussed. Based on the restricted system equivalent (r.s.e.) transformation and by introducing new state vectors, the singular system is transformed into a discrete-time Markovian jump standard linear system, and the linear matrix inequality (LMI) conditions for the discrete-time Markovian jump singular systems to be regular, causal, stochastically stable, and stochastically stable with γ-disturbance attenuation are obtained, respectively. With these conditions, the robust state feedback stochastic stabilization problem and H-infinity control problem are solved, and the LMI conditions are obtained. A numerical example illustrates the effectiveness of the method given in the paper. | Shuping MA Chenghui ZHANG Xinzhi LIU | 2008 | 控制理论与应用(英文版)2008，6，2： | 6 |
| 3 | Communication-Based Attacks Detection in Android Applications显示文摘The Android operating system provides a rich Inter-Component Communication(ICC) method that brings enormous convenience. However, the Android ICC also increases security risks. To address this problem, a formal method is proposed to model and detect inter-component communication behavior in Android applications. Firstly,we generate data flow graphs and data facts for each component through component-level data flow analysis.Secondly, our approach treats ICC just like method calls. After analyzing the fields and data dependencies of the intent, we identify the ICC caller and callee, track the data flow between them, and construct the ICC model. Thirdly,the behavior model of Android applications is constructed by a formal mapping method for component data flow graph based on Pi calculus. The runtime sensitive path trigger detection algorithm is then given. Communicationbased attacks are detected by analyzing intent abnormity. Finally, we analyze the modeling and detection efficiency,and compare it with relevant methods. Analysis of 57 real-world applications partly verifies the effectiveness of the proposed method. | Chuan Ma Tao Wang Limin Shen Dongkui Liang Shuping Chen Dianlong You | 2019 | Tsinghua Science and Technology2019，24，5： | 2 |
| 4 | Gap junction gene innexin3 being highly expressed in the nervous system and embryonic stage of the mud crab Scylla paramamosain显示文摘Innexin proteins are a class of transmembrane proteins existing in invertebrates and they have diverse biological functions. The innexin protein Sp-inx2 has been demonstrated to play roles in immune response and promotion of cell apoptosis in the mud crab Scylla paramamosain . One novel innexin gene, named as Sp-inx3 was characterized from S. paramamosin in this study, with an open reading frame of 1 101 bp encoding 367 amino acid residues. Multiple sequence alignment revealed that the Sp-inx3 is highly homologous with innexin3 of Cancer boredis and Homorus americanus . Quantitative real-time PCR (qPCR) and the western blotting results revealed that Sp-inx3 gene was expressed predominantly in the eyestalk, brain, and thoracic ganglion mass in both female and male crabs. The immunohistochemistry assay (IHC) also showed the widespread and intense immunoreactivity of Sp-inx3 in the brain and thoracic ganglion mass. Sp-inx3 mRNA transcription profi les exhibited signifi cantly higher expression from the embryo1 to embryo4 period and low level of expression at the prehatching period and zoea I larva period of S . paramamosain . These results indicate that the Sp-inx3 may play an important role in the nervous system and early embryonic development of S . paramamosain. | WANG Shuping CHEN Fangyi ZHANG Yaqun MA Xiaowan QIAO Kun | 2019 | Journal of Oceanology and Limnology2019，37，5： | 2 |
| 5 | Characteristics of diurnal variations of warm-season precipitation over Xinjiang Province in China显示文摘降水日变化受大气热力,动力过程以及复杂地形影响,演变特征复杂且区域差异显著.本文采用中国气象局发布的中国地面与CMORPH融合逐小时降水产品(2008–2019年),分析了新疆暖季降水日变化特征.研究结果表明:(1)新疆大部分地区降水主峰值发生在清晨;(2)持续时间超过三小时的降水事件是新疆地区主要降水事件,贡献了南疆和北疆一半以上的降水量;(3)在新疆中部(天山地区),暖季降水日变化峰值主要由持续时间超过7小时的降水事件贡献. | Jie Cao Shuping Ma Weihua Yuan Zhiyan Wu | 2022 | Atmospheric and Oceanic Science Letters2022，15，2： | 1 |
| 6 | Inhibitory Effects of Phenamacril, Tebuconazole and Their Mixtures on Fusarium graminearum in Wheat显示文摘Fusarium head blight caused by Fusarium graminearum is one of the most serious diseases in wheat production worldwide, which seriously affects the yield and quality of wheat. Wheat grains carrying the pathogen are poisonous to human and livestock health. With the long-term use of single chemical pesticide, the drug-resistance of F. graminearum is increasing day by day, and mixed agent is one of the effective strategies to improve the efficacy and delay the resistance. The mycelial growth rate method was used to determine the inhibition rates of phenamacril, tebuconazole and their mixtures(1∶1, 1∶3, 1∶5, 1∶7, 3∶1, 5∶1 and 7∶1). The synergistic coefficient(SR) was calculated by Wadley method, and the combined action types of the two agents were evaluated. The results showed that the EC_(50) of tebuconazole was 0.418 28 mg/L, and that of phenamacril was 0.489 8 mg/L; the optimum mixture ratio of phenamacril and tebuconazole was 1 ∶1, with the EC_(50) value of 0.053 74 and the synergistic coefficient of 4.2696, and the control effect of mixed agent was significantly better than that of single agent. It is feasible to control Fusarium head blight by mixing phenamacril and tebuconazole, providing a theoretical basis for development of new compound agents and effective control of Fusarium head blight. | Lei Cuiyu Yin Junliang Fang Zhengwu Wang Shuping Zhang Xing Ma Dongfang | 2018 | Plant Diseases and Pests2018，9，3： | 1 |
| 7 | Singular LQ problem for nonregular descriptor systems显示文摘 | Zhu Jiandong Ma Shuping Cheng Zhaolin | 2002 | IEEE Transactions on Automatic Control2002，47，7： | 1 |
| 8 | Hybrid Methods for Computing the Streamfunction and Velocity Potential for Complex Flow Fields over Mesoscale Domains显示文摘Three types of previously used numerical methods are revisited for computing the streamfunctionψand velocity potentialχfrom the horizontal velocity v in limited domains.The first type,called the SOR-based method,uses a classical successive over-relaxation(SOR)scheme to computeψ(orχ)first with an arbitrary boundary condition(BC)and thenχ(orψ)with the BC derived from v.The second type,called the spectral method,uses spectral formulations to construct the inner part of(ψ,χ)-the inversion of(vorticity,divergence)with a homogeneous BC,and then the remaining harmonic part of(ψ,χ)with BCs from v.The third type,called the integral method,uses integral formulas to compute the internally induced(ψ,χ)-the inversion of domain-internal(vorticity,divergence)using the free-space Greenꞌs function without BCs and then the remaining harmonicψ(orχ)with BCs from v minus the internally-induced part.Although these methods have previously been successfully applied to flows in large-scale and synoptic-scale domains,their accuracy is compromised when applied to complex flows over mesoscale domains,as shown in this paper.To resolve this problem,two hybrid approaches,the integral-SOR method and the integral-spectral method,are developed by combining the first step of the integral method with the second step adopted from the SOR-based and spectral methods,respectively.Upon testing these methods on real-case complex flows,the integral-SOR method is significantly more accurate than the integral-spectral method,noting that the latter is still generally more accurate than the three previously-used methods.The integral-SOR method is recommended for future applications and diagnostic studies of complex flows. | Jie CAO Qin XU Haishan CHEN Shuping MA | 2022 | Advances in Atmospheric Sciences2022，39，9： | 1 |
| 9 | Adsorption characteristics of ammonium ion by zeolite 13X显示文摘 | Hong Zheng Lijie Han Hongwen Ma Yan Zheng Hongmei Zhang Donghong Liu Shuping Liang | 2008 | Journal of Hazardous Materials2008，，2： | 1 |
| 10 | Singular LQ problem for nonregular descriptor systems显示文摘 | Jiandong Zhu Shuping Ma Zhaolin Cheng | 2002 | IEEE Transactions on Automatic Control2002，47，7： | 1 |
| 11 | miRNA func- tional synergistic network analysis of mice with ischemic stroke 显示文摘 | Shuping Xiao Yingwen Ma Haiying Zhu | 2014 | Neurol Sci2014，36，1： | 1 |
| 12 | A Model for Distribution of Aluminum in Silicon Refined by Vacuum Directional Solidification显示文摘 | Huang Shuping Ma Wenhui Wei Kuixian | 2013 | Vacuum2013，96，： | 1 |
| 13 | Synthesis and Properties of Ternary Europium Complexes with Aromatic Carboxylic Acid and Nitrogen-Containing Heterocyclic Ligand显示文摘Seven ternary Eu (Ⅲ) complexes were synthesized with aromatic carboxylic acid(benzoic acid, phenylacetic acid, phenylpropionic acid and cinnamic acid) as the first ligand and 1,10-phenanthroline or 2,2′-dipyridyl as the second ligand. The ternary Eu(Ⅲ) complexes were characterized by elemental analysis, IR and TG-DTG methods. In these complexes, the Eu(Ⅲ) ions are bonded to the oxygen atoms of carboxylate and the nitrogen atoms of neutral ligands. Four complexes whose second ligand is 1,10-phenanthrolin have fine thermal stability. Excitation and luminescence spectra of the title complexes reveal that the fluorescence of the complexes in which 1,10-phenanthrolin as the second ligand are more intensive than those complexes in which 2,2′-dipyridyl as the second ligand. The order of the strongest emission peak of seven ternary complexes is: Eu(β-PPA)3phen>Eu(BA)3phen>Eu(PLA)3phen>Eu(BA)3bipy>Eu(PLA)3bipy>Eu(CA)3phen·H2O>Eu(CA)3bipy (BA: benzoic; PLA: phenylacetic; β-PPA: phenylpropionic; CA: cinnamic; phen:1, 10-phenanthroline and bipy: 2, 2′-dipyridyl). | Ma Ruixia Wang Ruifen Wang Shuping Zhang Jianjun | 2006 | Journal of Rare Earths2006，24，3： | 1 |
| 14 | Singular LQ problem for nonregular descriptor systems显示文摘 | Jiandong Zhu Shuping Ma Zhaolin Cheng | 2002 | IEEE Transactions on Automatic Control2002，47，7： | 1 |
| 15 | Values held by nursing faculty and ,students in a university setting显示文摘 | Thurston HI Flood MA Shupe IS | 1989 | J Prof Nurs1989，5，4： | 1 |
| 16 | Immunogenicity of 23-Valent Pneumococcal Polysaccharide Vaccine in Patients with Chronic Obstructive Pulmonary Disease—Hebei Province,China,September−December,2019显示文摘Summary What is already known on this topic?The global burden of chronic obstructive pulmonary disease(COPD)is serious.Pneumococcal infection is associated with acute exacerbations of COPD(AECOPD).The 23-valent pneumococcal polysaccharide vaccine(PPSV23)is recommended for COPD patients to decrease AECOPD due to pneumococcus,but evidence on the immunogenicity of PPSV23 in COPD patients is limited.What is added by this report? | Yan Li Ying Ma Zhijie An Chenyan Yue Yamin Wang Liye Wang Yunqiu Liu Xiaodong Yuan Shuping Zhang Qiang Ye Hong Li Keli Li Zundong Yin Huaqing Wang | 2021 | China CDC weekly2021，3，16： | 1 |
| 17 | Characteristics of dynamic strain and strength of frozen silt under long-term dynamic loading显示文摘The dynamic strain and strength of frozen silt under long-term dynamic loading are studied based on creep tests. Three groups of tests are performed (Groups I, II, and III). The initial deviator stresses of Groups I and II are same and the dynamic stress amplitude of Group II is twice as that of Group I. The minimum value of dynamic stress in Group III is near zero and its dynamic stress amplitude is larger than those of Groups I and II. In tests of all three groups there are similar change trends of accumulative strain, but with different values. The accumulative strain curves consist of three stages, namely, the initial stage, the steady stage, and the gradual flow stage. In the tests of Groups I and II, during the initial stage with vibration times less than 50 loops the strain amplitude decreased with the increase of vibration times and then basically remained constant, fluctuating in a very small range. For the tests of Group III, during the initial and steady stages the strain amplitude decreased with the increase of vibration times, and then increased rapidly in the gradual flow stage. The dynamic strength of frozen silt decreases and trends to terminal dynamic strength as the vibration times of loading increase. | ShuPing Zhao Wei Ma GuiDe Jiao XiaoXiao Chang | 2011 | Research in Cold and Arid Regions2011，3，6： | 1 |
| 18 | Evolutionary selection for regression test cases based on diversity显示文摘1 Introduction Regression testing refers to retest code after modification to ensure that changes will not introduce new faults or cause faults in other lines of code[1].Regression test selection(RTS)is one of the predominant techniques.It identifies test cases that are relevant to test recent changes in an application and seeks to reduce the number of test suite while preserving the capability to reveal faults[2]. | Baoying MA Li WAN Nianmin YAO Shuping FAN Yan ZHANG | 2021 | Frontiers of Computer Science2021，15，2： | 0 |
| 19 | Preparation of polyclonal antibody highly specific for mouse BRD7 protein and its application显示文摘 | Heran Wang Ran Zhao Ming Zhou Chi Guo Yukun Liu Shihe Jiang Xiayu Li Wei Xiong Jian Ma Shuping Peng Xiaoling Li David C. Schmitt Ming Tan Guiyuan Li | 2014 | Acta Biochimica et Biophysica Sinica2014，46，2： | 0 |
| 20 | Characteristics and mixing state of S-rich particles in haze episodes in Beijing显示文摘 | Jun Hu Fengkui Duan Kebin He Yongliang Ma Shuping Dong Xiande Liu | 2016 | Frontiers of Environmental Science & Engineering2016，10，5： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员