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| 1 | Remdesivir and chloroquine effectively inhibit the recently emerged novel coronavirus (2019-nCoV) in vitro显示文摘Dear Editor,In December 2019,a novel pneumonia caused by a previously unknown pathogen emerged in Wuhan,a city of 11 million people in central China.The initial cases were linked to exposures in a seafood market in Wuhan.1 As of January 27,2020,the Chinese authorities reported 2835 confirmed cases in China's Mainland,including 81 deaths.Additionally,19 confirmed cases were identified in Hong Kong,Macao and Taiwan,and 39 imported cases were identified in Thailand,Japan,South Korea,United States,Vietnam,Singapore,Nepal,France,Australia and Canada.The pathogen was soon identified as a novel coronavirus(2019-nCoV),which is closely related to sever acute respiratory syndrome CoV(SARS-CoV).2 Currently,there is no specific treatment against the new virus.Therefore,identifying effective antiviral agents to combat the disease is urgently needed. | Manli Wang Ruiyuan Cao Leike Zhang Xinglou Yang Jia Liu Mingyue Xu Zhengli Shi Zhihong Hu Wu Zhong Gengfu Xiao | 2020 | Cell Research2020，30，3： | 563 |
| 2 | Pharmacological effects of Astragaloside IV: a literature review显示文摘OBJECTIVE: To review the pharmacological effects and mechanisms of action of Astragaloside IV in Huangqi (Radix Astragali Mongolici). METHODS: Aticles focusing on Astragaloside IV in English and Chinese in databases were collected and reviewed in order to summarize the latest extraction separation, pharmacokinetics, and the pharmacological effects of astrageloside IV. RESULTS: Protective effects of Astrageloside IV on the cardiovascular system, immune, digestive, nervous system were identified, and the action mechanisms were associated with regulation of the calcium balance, anti-oxydant, antiapoptosis, antivirus, and so on. CONCLUSION: Astrageloside IV has broad application prospects, especially in cardiovascular diseases, digestive diseases, cancer and other modern high incidence, high-risk diseases, and could be developed as a medicine. | Shuang Ren Hua Zhang Yongping Mu Mingyu Sun Ping Liu | 2013 | Journal of Traditional Chinese Medicine2013，33，3： | 57 |
| 3 | Effect of vanadium occurrence state on the choice of extracting vanadium technology from stone coal显示文摘钒从的抽取技术借助于 no-salt-roasting 投掷煤并且冲淡酸答案沥滤处理有低污染,低投资,以及高钒沥滤效率的优点,它为扩大申请使它成为最好的技术。在现在的学习,钒出现的效果在石头煤声明钒的沥滤的效率上的温度和添加剂代理人被学习,烤。结果显示提取的钒技术上的钒出现状态的效果是明显的。如果在石头煤的钒部件在非结晶的阶段形式存在,这类石头煤能被 no-slat-roasting 对待并且冲淡酸答案沥滤技术;当忍受钒的水晶的阶段在石头煤存在时,烤的添加剂必须被增加破坏这种水晶的形式以便高获得钒沥滤率。 | WANG Mingyu XIANG Xiaoyan ZHANG Liping XIAO Liansheng | 2008 | Rare Metals2008，27，2： | 32 |
| 4 | Further Information of the Associated Li Deposits in the No.6 Coal Seam at Jungar Coalfield, Inner Mongolia, Northern China显示文摘Total 138 coal samples and 14 parting samples were taken from the No. 6 Seam of the Jungar Coalfield, Inner Mongolia. These samples were analysed by optical microscopy, sequential chemical extraction procedure (SCEP), inductively coupled plasma mass spectrometry (ICP-MS), X-ray powder diffraction (XRD), and scanning electron microscope in conjunction with an energy-dispersive X-ray spectrometer (SEM-EDX) analysis. The results indicate that the Li contents have reached the industrial grade of the coal associated Li deposit, and the total Li reserves have reached 2406600 tons, that is, 5157000 tons Li2O in the No. 6 seam in the Jungar Coalfield. The sequential chemical extraction procedure results suggest that the Li concentration is mainly related to inorganic matter. The minerals in the coals consist of kaolinite, boehmite, chlorite-group mineral, quartz, calcite, pyrite, siderite and amorphous clay material. Some Li could be absorbed by clay minerals in the Li-bearing coal seam. The chlorite phase?could be?most likely the host for a part of Li. The Yinshan Oldland should be the most possible source of Li of the coal. | SUN Yuzhuang ZHAO Cunliang LI Yanheng WANG Jinxi ZHANG Jianya JIN Zhe LIN Mingyue Wolfgang KALKREUTH | 2013 | Acta Geologica Sinica(English Edition)2013，87，4： | 33 |
| 5 | Leaching of vanadium from stone coal with sulfuric acid显示文摘The effects of roasting, mass ratio of H2SO4 to stone coal, leaching temperature, liquid-to-solid ratio, grinding fineness of stone coal, and two-stage counter-current leaching on the vanadium leaching ratio were studied. The results show that the vanadium leaching ratio of roasted stone coal through two-stage counter-current leaching can reach 65.1% at the mass ratio of H2SO4 to stone coal of 20%, leaching temperature of 95°C, leaching time of 30 h, liquid-to-solid ratio of 1.1 mL-g-1, and grinding fineness of 0.1 mm, which can serve as an experimental basis for the production of vanadium from stone coal. | WANG Mingyu XIAO Liansheng LI Qinggang WANG Xuewen XIANG Xiaoyan | 2009 | Rare Metals2009，28，1： | 26 |
| 6 | A reappraisal of CTLA-4 checkpoint blockade in cancer immunotherapy显示文摘anti-CTLA-4 抗体由阻止 B7-CTLA-4 相互作用接近否定发信号引起肿瘤拒绝,这被假定。在比临床上有效的 dosing 完成的血浆层次更加高的集中,令人惊讶地, anti-CTLA-4 抗体 Ipilimumab 不由 CTLA-4 也不 CTLA-4 绑定堵住任何一 B7 trans-endocytosis 到使不能调动或联系房间的 B7。因而, Ipilimumab 不从人性化的任何一个 CTLA4 基因在树枝状的房间(DC ) 上增加 B7 (Ctla4 h/h ) 或人的 CD34 + 茎重新组成房间的 NSG 老鼠。在 Ctla4 高效地表示人和老鼠 CTLA4 基因,绑在人的 anti-CTLA-4 抗体然而并非老鼠 CTLA-4 的 h/m 老鼠导致 Treg 弄空和 Fc 受体依赖者肿瘤拒绝。堵住的抗体 L3D10 比得上在引起肿瘤拒绝的非阻塞的 Ipilimumab。显著地,输在人类化期间堵住活动的 L3D10 子孙在导致 Treg 弄空和肿瘤拒绝仍然保持充分能干。有效地在淋巴的器官堵住 CD4 T 细胞激活和 de novo CD8 T 细胞 priming 的 Anti-B7 抗体否定地不影响 Ipilimumab 的 immunotherapeutic 效果。因此,临床上有效的 anti-CTLA-4 mAb 由独立于检查点封锁的机制引起肿瘤拒绝但是依赖于主人 Fc 受体。我们为 CTLA-4 检查点的一个重评价的数据电话封锁假设并且为安全、有效的 anti-CTLA-4 mAbs 的下一代提供新卓见。 | Xuexiang Du Fei Tang Mingyue Liu Juanjuan Su Yan Zhang Wei Wu Martin Devenport Christopher A Lazarski Peng Zhang Xu Wang Peiying Ye Changyu Wang Eugene Hwang Tinghui Zhu Ting Xu Pan Zheng Yang Liu | 2018 | Cell Research2018，28，4： | 25 |
| 7 | Effect of oxidization on enrichment behavior of TiO_2 in titanium-bearing slag显示文摘Due to the dispersed distribution of the titanium component in various mineral phases and very fine grain size, it is difficult to recover the titanium component from the slag. In order to utilize titanium resources, selective enriching and selective growing of the titanium component from the molten slag is expected. In this paper, the selection of the best tita- nium enrichment phase and the effect of oxidization on the enrichment of titanium by blowing air into the molten slag were studied. The results showed that through oxidizing the slag, the content of the perovskite phase increases while that of the other titanium-bearing mineral phases decreases until they disappear. Most titania resources were enriched into the perovskite phase and increase in size. The process of enrichment and growth is easily carried out. | WANG Mingyu LI Liaosha ZHANG Li ZHANG Linnan TU Ganfeng SUI Zhitong | 2006 | Rare Metals2006，25，2： | 23 |
| 8 | Isolation,characterization,and phylogenic analysis of three new severe fever with thrombocytopenia syndrome bunyavirus strains derived from Hubei Province,China显示文摘Hubei Province is a major epidemic area of severe fever with thrombocytopenia syndrome bunyavirus(SFTSV) in China. However, to date, a few SFTSV strains have been isolated from Hubei Province, preventing effective studies of epidemic outbreaks. Here, we report three confirmed patients(2015–2016) with typical symptoms of severe fever with thrombocytopenia syndrome disease(SFTS) who were farmers resident in different regions in Hubei Province. Three new SFTSV strains were isolated from the serum samples of each patient. Characterization of viral growth properties showed that there were no significant differences in virus production. All strains were completely sequenced, and phylogenetic analysis showed that unlike the other strains from Hubei province, which belonged to the SFTSV C3 genotype, one of the three strains belonged to the SFTSV C2 genotype. These results suggested that multiple SFTSV genotypes have been circulating in Hubei Province, providing insights into SFTSV evolution and improving our understanding of SFTSV prevalence in Hubei Province. | Yanfang Zhang Shu Shen Junming Shi Zhengyuan Su Mingyue Li Wenjing Zhang Mengmeng Li Zhihong Hu Cheng Peng Xin Zheng Fei Deng | 2017 | Virologica Sinica2017，32，1： | 21 |
| 9 | Rock burst prevention based on dissipative structure theory显示文摘Dynamic collapses of deeply mined coal rocks are severe.In order to explore new ideas for rock burst prevention,the relationship between entropy equations and dissipative structure was studied,and a concept-rock burst activity system(RAS) was proposed and its entropy was analyzed.The energy features of RAS were analyzed,and the relationship between electromagnetic radiation(EMR) intensity E and dissipated energy Ud was initially established.We suggest that rock burst normally happens only when diS deS in RAS;RAS is the dissipative structure before collapse,and after which it become a new orderly structure,i.e.,a ''dead'',a statically orderly structure.We advanced that the effective way to prevent rock burst is to introduce entropy to the system for it keeps the system away from the dissipative structure.E and Ud of RAS are positively related,which is used as a bridge between dissipative structure theory and rock burst prevention engineering applications.Based on this,and using the data of rock burst prevention for working face No.250205up of Yanbei coal mine,an engineering verification for the dissipative structure of RAS was carried out,which showed good results. | Song Dazhao Wang Enyuan Li Nan Jin Mingyue Xue Shipeng | 2012 | International Journal of Mining Science and Technology2012，22，2： | 17 |
| 10 | Quaternary glacier development and the relationship between the climate change and tectonic uplift in the Helan Mountain显示文摘孤立拉长 Helan 山脉山岳的 NE-SW,分开从 Tenggeli 沙漠的 Ordos 高原的适度的草地,是在西方中国学习冰河发展的一个关键位置以及气候的联合条件随着变化构造高举。冰川的地形和存款包括冰斗,山峰,刀口山脉,侧面的冰碛,和终端冰碛在 Helan 山的中间的部分在 2800 m a.s.l 上面散布。这分布显示这曾经是 glaciated 在期间晚第四级。形态学特征证明形成事件的风景的一个清楚的序列发生在整个 Helan 山。实验室光学地刺激了光(OSL ) 和标明日期的加速器团 spectrometry 放射性碳(AMS 14C ) 结果显示冰川的进展的迟了的历史。在 Helan 山的中间的部分的迟了的更新世冰河进展了接近他们的位置至少四次,并且冰川的序列能作为最后一个冰川的周期的中间的阶段被分配(MIS3b, 43.2 ????????? ′ ? 錸? 錸?@ | ZHANG Wei HE MingYue LI YongHua CUI ZhiJiu WANG ZhiLin YU Yang | 2012 | Chinese Science Bulletin2012，57，34： | 14 |
| 11 | Simultaneous virus identification and characterization of severe unexplained pneumonia cases using a metagenomics sequencing technique显示文摘Many viruses can cause respiratory diseases in humans.Although great advances have been achieved in methods of diagnosis,it remains challenging to identify pathogens in unexplained pneumonia(UP) cases.In this study,we applied next-generation sequencing(NGS) technology and a metagenomic approach to detect and characterize respiratory viruses in UP cases from Guizhou Province,China.A total of 33 oropharyngeal swabs were obtained from hospitalized UP patients and subjected to NGS.An unbiased metagenomic analysis pipeline identified 13 virus species in 16 samples.Human rhinovirus C was the virus most frequently detected and was identified in seven samples.Human measles virus,adenovirus B 55 and coxsackievirus A10 were also identified.Metagenomic sequencing also provided virus genomic sequences,which enabled genotype characterization and phylogenetic analysis.For cases of multiple infection,metagenomic sequencing afforded information regarding the quantity of each virus in the sample,which could be used to evaluate each viruses' role in the disease.Our study highlights the potential of metagenomic sequencing for pathogen identification in UP cases. | Xiaohui Zou Guangpeng Tang Xiang Zhao Yan Huang Tao Chen Mingyu Lei Wenbing Chen Lei Yang Wenfei Zhu Li Zhuang Jing Yang Zhaomin Feng Dayan Wang Dingming Wang Yuelong Shu | 2017 | Science China(Life Sciences)2017，60，3： | 14 |
| 12 | Study on Graphene Oxide Modified Inorganic Phase Change Materials and Their Packaging Behavior显示文摘We prepared the nano-inorganic phase-change 'alloy' materials through the modification of Na_2SO_4·10H_2O using Na_2HPO_4·12H_2O and GO nano-nucleating agent, and further investigated their thermophysical properties such as melting/solidification temperatures and enthalpies via differential scanning calorimetry. When the weight ratio of Na_2SO_4·10H_2O and Na_2HPO_4·12H_2O was 8:2 and the weight ratio of graphene oxide was 0.5% of phase change material, the phase change 'alloy' material showed excellent performances, specifically, the melting temperature and latent heat were found to be 22 ℃ and 190 J/g with a degree of subcooling decreased from 8.6℃ to 2.1℃. In order to extend the application of the phase change 'alloy' material to building energy saving field, it was adsorbed on expanded glass beads under vacuum and further covered with diatomite. When the adsorption rate of EGB(volume) and PCAM(weight) was 2.5:1, the particle size of diatomaceous earth was found to be 3.6μm, while the best packaging result was obtained with the melting temperature and latent heat being 21℃ and 135 J/g, and no leakage was observed. | 肖力光 ZHAO Mingyue HU Hongliang | 2018 | Journal of Wuhan University of Technology(Materials Science)2018，33，4： | 14 |
| 13 | Magnetoresistance enhancement and temperature stability of magnetoresistance in La_(1-x)(Sr_(1-y)Na_y)_xMnO_3显示文摘A series of the samples La_(1-x)(Sr_(1-y)Na_y)_xMnO_3(y=0.0,0.2,0.4,0.6,0.8,1.0) were prepared by the solid-state reaction method.Magnetoresistance enhancement and temperature stability of magnetoresistance in the system La_(1-x)(Sr_(1-y)Na_y)_xMnO_3 with unchanged Mn^(3+)/Mn^(4+) ratio through the doping of both monovalent and divalent elements at A site were studied through the measurements of X-ray diffraction(XRD) patterns,resistivity-temperature(ρ-T) curves and magnetoresistance-temperature(MR-T) curves.The results indicate that with the increase of Na doping amount,the peak value of MR increases,and it increases from 12.4% for y=0.2 to 50.6% for y=1.0 in the magnetic field B=0.8 T;ρ-T curves exhibit the double-peak phenomenon,which comes from the competition between the resistivity of surface phase and that of body phase;for the sample of y=0.8,MR increases slowly from 8.3% to 9.4% in the temperature range from 259 to 179 K,and MR is so stable in such a wide temperature range,which provides reference for the research on the temperature stability of MR. | Wang, Guiying Yan, Guoqing Yang, Jie Wang, Wenqi Tang, Yonggang Song, Qixiang Zhang, Mingyu Peng, Zhensheng | 2012 | Rare Metals2012，31，4： | 13 |
| 14 | COVID-19 Super Spreading Event Amongst Elderly Individuals—Jilin Province,China,January 2021显示文摘Summary What is already known on this topic?Clusters of COVID-19 cases often happened in small settings(e.g.,families,offices,school,or workplaces)that facilitate person-to-person virus transmission,especially from a common exposure.What is added by this report?On January 10 and 11,2021,an individual gave three product promotional lectures in Tonghua City. | Laishun Yao Mingyu Luo Tiewu Jia Xingang Zhang Zhulin Hou Feng Gao Xin Wang Xiaogang Wu Weihua Cheng Guoqian Li Jing Lu Bing Zhao Tao Li Enfu Chen Dapeng Yin Biao Huang | 2021 | China CDC weekly2021，3，10： | 13 |
| 15 | Isolation and characterization of Zika virus imported to China using C6/36 mosquito cells显示文摘Dear Editor,Zika virus(ZIKV)is a mosquito-borne flavivirus that usually causes asymptomatic infections or mild illness in humans.However,the unprecedented epidemics of ZIKV in Latin America since early 2015 have made this flavivirus an international health risk(Liu and Zhang,2016).In particular,the potential association of ZIKV infection with the remarkable increase in the number | Chenglin Deng Siqing Liu Qiuyan Zhang Mingyue Xu Honglei Zhang Dayong Gu Lei Shi Jian'an He Gengfu Xiao Bo Zhang | 2016 | Virologica Sinica2016，31，2： | 12 |
| 16 | Advanced fabrication for electrospun three-dimensional nanofiber aerogels and scaffolds显示文摘Electrospinning is a versatile strategy for creating nanofiber materials with various structures,which has broad application for a myriad of areas ranging from tissue engineering,energy harvesting,filtration and has become one of the most important academic and technical activities in the field of material science in recent years.In addition to playing a significant role in the construction of two-dimensional(2D)nanomaterials,electrospinning holds great promise as a robust method for producing three-dimensional(3D)aerogels and scaffolds.This article reviews and summarizes the recent advanced methods for fabricating electrospun three-dimensional nanofiber aerogels and scaffolds,including gas foaming,direct electrospinning of 3D nanofibrous scaffold,short nanofibers assembling into 3D aerogels/scaffolds,3D printing,electrospray,origami and cell sheet engineering,centrifugal electrospinning,and other methods.Besides,intriguing formation process,crosslinking pathway,properties,and applications of 3D aerogels and scaffolds are also introduced.Taken together,these aerogels and scaffolds with various excellent features present tremendous potential in various fields. | Yujie Chen Muhammad Shafiq Mingyue Liu Yosry Morsi Xiumei Mo | 2020 | Bioactive Materials2020，5，4： | 12 |
| 17 | Effect of Microwave and He-Ne Laser on Enzyme Activity and Biophoton Emission of Isatis indigotica Fort显示文摘The seed embryos of Isatis indigotica Fort were exposed to He-Ne laser (5.23 mW/mm2, radiated for 5 min) and microwave (1.26 mW/mm2, radiated for 8 s) irradiation to determine the effects of microwave and He-Ne laser pretreatment on enzyme activities, and biophoton emission of cotyledon. Then: (i) changes in the activities of enzymes in I. indigotica cotyledon (such as amylase, transaminase, and proteinase) were measured to investigate the effects of He-Ne laser and microwave pretreatment; and (ii) biophoton emission was measured to determine the speed of cell division and metabolism. Results from these experiments indicated that: (i) the activities of amylase, transaminase, and proteinase of the cotyledon pretreated by HeNe laser and microwave were significantly increased; and (ii) the intensity of biophoton emission was enhanced significantly by He-Ne laser and microwave irradiation. These changes suggest that He-Ne laser and microwave pretreatment can improve the inner energy of seeds, lead to an enhancement of cotyledon enzymes, and speed up the metabolism of the cell, resulting in significantly increased biophoton emission.Moreover, the mechanism of action of the effects of laser and microwave radiation on the microcalorimetric parameters, enzyme activities, and biophoton emission of seeds is discussed on the basis of the results obtained. | Yi-PingCHEN Yong-JunLIU Xun-LingWANG Zhao-YuREN MingYUE | 2005 | Journal of Integrative Plant Biology2005，47，7： | 12 |
| 18 | Insight-HXMT observations of the first binary neutron star merger GW170817显示文摘Finding the electromagnetic(EM) counterpart of binary compact star merger, especially the binary neutron star(BNS) merger,is critically important for gravitational wave(GW) astronomy, cosmology and fundamental physics. On Aug. 17, 2017,Advanced LIGO and Fermi/GBM independently triggered the first BNS merger, GW170817, and its high energy EM counterpart,GRB 170817 A, respectively, resulting in a global observation campaign covering gamma-ray, X-ray, UV, optical, IR, radio as well as neutrinos. The High Energy X-ray telescope(HE) onboard Insight-HXMT(Hard X-ray Modulation Telescope) is the unique high-energy gamma-ray telescope that monitored the entire GW localization area and especially the optical counterpart(SSS17 a/AT2017 gfo) with very large collection area(~1000 cm^2) and microsecond time resolution in 0.2-5 MeV. In addition,Insight-HXMT quickly implemented a Target of Opportunity(ToO) observation to scan the GW localization area for potential X-ray emission from the GW source. Although Insight-HXMT did not detect any significant high energy(0.2-5 MeV) radiation from GW170817, its observation helped to confirm the unexpected weak and soft nature of GRB 170817 A. Meanwhile,Insight-HXMT/HE provides one of the most stringent constraints(~10^(-7) to 10^(-6) erg/cm^2/s) for both GRB170817 A and any other possible precursor or extended emissions in 0.2-5 MeV, which help us to better understand the properties of EM radiation from this BNS merger. Therefore the observation of Insight-HXMT constitutes an important chapter in the full context of multi-wavelength and multi-messenger observation of this historical GW event. | TiPei Li ShaoLin Xiong ShuangNan Zhang FangJun Lu LiMing Song XueLei Cao Zhi Chang Gang Chen Li Chen TianXiang Chen Yong Chen YiBao Chen YuPeng Chen Wei Cui WeiWei Cui JingKang Deng YongWei Dong YuanYuan Du MinXue Fu GuanHua Gao He Gao Min Gao MingYu Ge YuDong Gu Ju Guan ChengCheng Guo DaWei Han Wei Hu Yue Huang Jia Huo ShuMei Jia LuHua Jiang WeiChun Jiang Jing Jin YongJie Jin Bing Li ChengKui Li Gang Li MaoShun Li Wei Li Xian Li XiaoBo Li XuFang Li YanGuo Li ZiJian Li ZhengWei Li XiaoHua Liang JinYuan Liao CongZhan Liu GuoQing Liu HongWei Liu ShaoZhen Liu XiaoJing Liu Yuan Liu YiNong Liu Bo Lu XueFeng Lu Tao Luo Xiang Ma Bin Meng Yi Nang JianYin Nie Ge OU JinLu Qu Na Sai Liang Sun Yin Tan Lian Tao WenHui Tao YouLi Tuo GuoFeng Wang HuanYu Wang Juan Wang WenShuai Wang YuSa Wang XiangYang Wen BoBing WU Mei Wu GuangCheng Xiao He Xu YuPeng Xu LinLi Yan JiaWei Yang Sheng Yang YanJi Yang AiMei Zhang ChunLei Zhang ChengMo Zhang Fan Zhang HongMei Zhang Juan Zhang Qiang Zhang Shu Zhang Tong Zhang Wei Zhang WanChang Zhang WenZhao Zhang Yi Zhang Yue Zhang YiFei Zhang YongJie Zhang Zhao Zhang ZiLiang Zhang HaiSheng Zhao JianLing Zhao XiaoFan Zhao ShiJie Zheng Yue Zhu YuXuan Zhu ChangLin Zou | 2018 | Science China(Physics,Mechanics & Astronomy)2018，61，3： | 12 |
| 19 | Vertical dynamic and thermodynamic characteristics of urban lower boundary layer and its relationship with aerosol concentration over Beijing显示文摘By utilizing observational data from a 325 m tower of the Institute of Atmospheric Physics (IAP), Chinese Academy of Sciences (CAS) on March 19-29, 2001 and August 11-25, 2003, a comprehensive study was conducted on the vertical dynamical and thermodynamic characteristics of the urban lower boundary layer (ULBL) and its relationship with aerosol concentration over Beijing. Firstly, a comparative analysis was made on the gradient data (wind, temperature and humidity), ultrasonic data (atmospheric turbulences) and air-quality observations at different tower heights (47, 120 and 280 m). Secondly, a diagnosis was made to reveal the major features of normalized variances of velocity and temperature, turbulence kinetic energy as well as their relationship with aerosol concentrations. Furthermore, the characteristics of the ULBL vertical structure and the TSP concentration/distribution variations during a sand/dust weather process were also analyzed. The outcome of the study showed that under unstable stratification, the normalized variances of velocity (σu/u*, σv/u*, σw/u*) and temperature (σT/T*) at 47 and 120 m heights fit the Monin-Obukhov similarity (MOS) framework and the fitting formulas were given out accordingly. According to the stratification parameter (z′/L), the stable ULBL could be divided into 2 zones. With z′/L<0.1, it was a weakly stable zone and MOS framework was applicable. The other was a highly stable zone with z′/L>0.1 and the normalized velocity variances tended to increase along with higher stability, but it remained constant for normalized temperature variances. At daytime, the near-surface layer includes two heights of 47 and 120 m, while 280 m has been above it. The ULBL analysis in conjunction with a sand/dust weather process in Beijing in March 2001 indicated that the maximum concentration of Total Suspended Particulates (TSP) at 320 m reached 913.3 μg/m3 and the particles were transported from the upper to lower ULBL, which was apparently related to the development process of a low-level jet and its concomitant strong sinking motion. | ZHOU Mingyu, YAO Wenqing, XU Xiangde & YU Haiqing State Key Laboratory on Severe Weather, Chinese Academy of Meteorological Sciences, Beijing 100081, China National Marine Environment Forecasting Center, Beijing 100081, China National Meteorological Center, Beijing 100081, China | 2005 | Science China Earth Sciences2005，48，z2： | 11 |
| 20 | Selection of optimal window length using STFT for quantitative SNR analysis of LFM signal显示文摘An adaptive approach to select analysis window parameters for linear frequency modulated(LFM) signals is proposed to obtain the optimal 3 dB signal-to-noise ratio(SNR) in the shorttime Fourier transform(STFT) domain.After analyzing the instantaneous frequency and instantaneous bandwidth to deduce the relation between the window length and deviation of the Gaussian window,high-order statistics is used to select the appropriate window length for STFT and get the optimal SNR with the right time-frequency resolution according to the signal characteristic under a fixed sampling rate.Computer simulations have verified the effectiveness of the new method. | Qingbo Yin Liran Shen Mingyu Lu Xiangyang Wang Zhi Liu | 2013 | Journal of Systems Engineering and Electronics2013，24，1： | 11 |
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