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| 1 | Determination of focal depth by two waveform-based methods:A case study for the 2008 Panzhihua earthquake显示文摘With the 2008 M S 6.1 Panzhihua earthquake as a case study,we demonstrate that the focal depth of the main shock can be well constrained with two approaches:(1) using the depth phase sPL and (2) using full waveform inversion of local and teleseismic data.We also show that focal depths can be well constrained using the depth phase sPL with single broadband seismic station.Our study indicates that the main shock is located at a depth of 11 km,much shallower than those from other studies,confirming that the earthquake occurs in upper crust.Aftershocks are located in the depth range of 11-16 km,which is consistent with a ruptured near vertical fault whose width is about 10 km,as expected for an M S 6.1 earthquake. | Zhenjie Wang Jiajun Chong Sidao Ni Barbara Romanowicz | 2011 | Earthquake Science2011，24，4： | 17 |
| 2 | Wheat genomic study for genetic improvement of traits in China显示文摘Bread wheat(Triticum aestivum L.)is a major crop that feeds 40%of the world’s population.Over the past several decades,advances in genomics have led to tremendous achievements in understanding the origin and domestication of wheat,and the genetic basis of agronomically important traits,which promote the breeding of elite varieties.In this review,we focus on progress that has been made in genomic research and genetic improvement of traits such as grain yield,end-use traits,flowering regulation,nutrient use efficiency,and biotic and abiotic stress responses,and various breeding strategies that contributed mainly by Chinese scientists.Functional genomic research in wheat is entering a new era with the availability of multiple reference wheat genome assemblies and the development of cutting-edge technologies such as precise genome editing tools,highthroughput phenotyping platforms,sequencing-based cloning strategies,high-efficiency genetic transformation systems,and speed-breeding facilities.These insights will further extend our understanding of the molecular mechanisms and regulatory networks underlying agronomic traits and facilitate the breeding process,ultimately contributing to more sustainable agriculture in China and throughout the world. | Jun Xiao Bao Liu Yingyin Yao Zifeng Guo Haiyan Jia Lingrang Kong Aimin Zhang Wujun Ma Zhongfu Ni Shengbao Xu Fei Lu Yuannian Jiao Wuyun Yang Xuelei Lin Silong Sun Zefu Lu Lifeng Gao Guangyao Zhao Shuanghe Cao Qian Chen Kunpu Zhang Mengcheng Wang Meng Wang Zhaorong Hu Weilong Guo Guoqiang Li Xin Ma Junming Li Fangpu Han Xiangdong Fu Zhengqiang Ma Daowen Wang Xueyong Zhang Hong-Qing Ling Guangmin Xia Yiping Tong Zhiyong Liu Zhonghu He Jizeng Jia Kang Chong | 2022 | Science China(Life Sciences)2022，65，9： | 9 |
| 3 | Near surface velocity and Q_s structure of the Quaternary sediment in Bohai basin,China显示文摘Heavily populated by Beijing and Tianjin cities,Bohai basin is a seismically active Cenozoic basin suffering from huge lost by devastating earthquakes,such as Tangshan earthquake.The attenuation(QP and QS) of the surficial Quaternary sediment has not been studied at natural seismic frequency(1-10 Hz),which is crucial to earthquake hazards study.Borehole seismic records of micro earthquake provide us a good way to study the velocity and attenuation of the surficial structure(0-500 m).We found that there are two pulses well separated with simple waveforms on borehole seismic records from the 2006 MW4.9 Wen'an earthquake sequence.Then we performed waveform modeling with generalized ray theory(GRT) to confirm that the two pulses are direct wave and surface reflected wave,and found that the average vP and vS of the top 300 m in this region are about 1.8 km/s and 0.42 km/s,leading to high vP/vS ratio of 4.3.We also modeled surface re-flected wave with propagating matrix method to constrain QS and the near surface velocity structure.Our modeling indicates that QS is at least 30,or probably up to 100,much larger than the typically assumed extremely low Q(~10),but consistent with QS modeling in Mississippi embayment.Also,the velocity gradient just beneath the free surface(0-50 m) is very large and velocity increases gradually at larger depth.Our modeling demonstrates the importance of borehole seismic records in resolving shallow velocity and attenuation structure,and hence may help in earthquake hazard simulation. | Jiajun Chong Sidao Ni | 2009 | Earthquake Science2009，22，5： | 7 |
| 4 | Is laparoscopy equal to laparotomy in detecting and treating small bowel injuries in a porcine model?显示文摘AIM: To evaluate the safety and effectiveness of laparoscopy compared with laparotomy for diagnosing and treating small bowel injuries (SBIs) in a porcine model. METHODS: Twenty-eight female pigs were anesthetized and laid in the left recumbent position. The SBI model was established by shooting at the right lower quadrant of the abdomen. The pigs were then randomized into either the laparotomy group or the laparoscopy group. All pigs underwent routine exploratory laparotomy or laparoscopy to evaluate the abdominal injuries, particularly the types, sites, and numbers of SBIs. Traditional open surgery or therapeutic laparoscopy was then performed. All pigs were kept alive within the observational period (postoperative 72 h). The postoperative recovery of each pig was carefully observed. RESULTS: The vital signs of all pigs were stable within 1-2 h after shooting and none of the pigs died from gunshot wounds or SBIs immediately. The SBI model was successfully established in all pigs and definitively diagnosed with single or multiple SBIs either by exploratory laparotomy or laparoscopy. Compared with exploratory laparotomy, laparoscopy took a significantly longer time for diagnosis (41.27 ± 12.04 min vs 27.64 ± 13.32 min, P = 0.02), but the time for therapeutic laparoscopy was similar to that of open surgery. The length of incision was significantly reduced in the laparoscopy group compared with the laparotomy group (5.27 ± 1.86 cm vs 15.73 ± 1.06 cm, P < 0.01). In the final post-mortem examination 72 h after surgery, both laparotomy and laparoscopy offered a definitive diagnosis with no missed injuries. Postoperative complications occurred in four cases (three following laparotomy and one following laparoscopy, P = 0.326). The average recovery period for bowel function, vital appearance, and food re-intake after laparoscopy was 10.36 ± 4.72 h, 14.91 ± 3.14 h, and 15.00 ± 7.11 h, respectively. All of these were significantly shorter than after laparotomy (21.27 ± 10.17 h, P = 0.004; 27.82 ± 9.61 h, P < 0.001; and 24.55 ± 9.72 h, respectively, P = 0.016). CONCLUSION: Compared with laparotomy, laparoscopy offers equivalent efficacy for diagnosing and treating SBIs, and reduces postoperative complications as well as recovery period. | Cheng-Xiang Shan Chong Ni Ming Qiu Dao-Zhen Jiang | 2012 | World Journal of Gastroenterology2012，18，46： | 6 |
| 5 | SAR motion compensation based on the correction of residual attitude errors显示文摘As residual attitude errors are likely to affect the synthetic aperture radar (SAR) imaging, this paper presents a SAR motioncompensation algorithm based on the correction of residual attitude errors. The existing methods all use the antenna stableplatform to correct the attitude errors, and then compensate the trajectory deviations in the following imaging process. Besidescompensating the trajectory deviations, the modified method of this paper also considers the influence of residual attitude er-rors on the SAR imaging, and can compensate both the trajectory deviations and the residual attitude errors. Compared withthe existing methods, the modified method in this paper can more precisely compensate the imperfect motion on the SAR im-aging, especially good for the SAR system with a small platform, near operating distance and a narrow antenna beam. Such asystem causes severe residual attitude errors and needs to consider the influence of antenna beam pointing errors on the imag-ing. The validity of the modified method presented by this paper is demonstrated by the result of the experiment. | NI Chong WANG YanFei XU XiangHui ZHOU ChangYi | 2011 | Science China(Physics,Mechanics & Astronomy)2011，54，10： | 3 |
| 6 | A super-resolution algorithm for synthetic aperture radar based on modified spatially variant apodization显示文摘The existing spatially variant apodizations(SVAs) either cannot depress the sidelobes effectively or reduce the energy of the mainlobe.To improve this,a modified SVA(MSVA) is put forward in this paper,which expands the traditional filter from 3-taps to 5-taps and sets relevant parameters according to different sampling rates to get the excellent result that satisfies constrained optimization theory.A modified super-SVA is also presented,which compares the result after the iteration with the original signal and makes the one whose amplitude is smaller as the initial value of the next iteration.This method can eliminate the sidelobes produced by the intermediate operation,so that the following bandwidth extrapolation is more available.Super-MSVA is presented based on the modified SVA and modified super-SVA,which is suitable for any Nyquist sampling rate,can extrapolate the signal bandwidth many times through iteration with a commensurate improvement in resolution,as demonstrated by the result of the experiment. | NI Chong WANG YanFei XU XiangHui ZHOU ChangYi CUI PengFei | 2011 | Science China(Physics,Mechanics & Astronomy)2011，54，2： | 2 |
| 7 | Logarithmic mean Divisia index ( LMDI ) decomposition of coal consumption in China based on the energy allocation diagram of coal flows显示文摘 | Chong ChinHao Ma Linwei Li Zheng Ni Weidou Song Shizhong | 2015 | Energy2015，85，： | 1 |
| 8 | A syntrophic propionate-oxidizing microflora and its bioaugmentation on anaerobic wastewater treatment for enhancing methane production and COD removal显示文摘 | Chong Liu Jianzheng Li Shuo Wang Loring Nies | 2016 | Frontiers of Environmental Science & Engineering2016，10，4： | 1 |
| 9 | Derivatives of generalized distance functions and existence of generalized nearest points显示文摘 | Li Chong Ni Renxing | 2002 | J Approx Theory2002，115，1： | 1 |
| 10 | Emphysema lung lobe volume reduction: effects on the ipsilateral and contralateral lobes显示文摘 | Matthew Brown Hyun Kim Fereidoun Abtin Charlie Strange Maya Galperin-Aizenberg Richard Pais Irene Costa Arash Ordookhani Daniel Chong Chiayi Ni Michael McNitt-Gray Donald Tashkin Jonathan Goldin | 2012 | European Radiology2012，，7： | 1 |
| 11 | Causative fault and seismogenic mechanism of the 2010 Suining M5.0 earthquake from joint modeling of seismic and InSAR data显示文摘Although the Sichuan basin is a stable block with low historical seismicity,the Suining M5.0 earthquake on January31,2010 occurred near the center of the basin,causing casualty and substantial damage.Previous studies have shown that the earthquake is very shallow and may occur in the sedimentary cover rocks,but its causative fault has not been identified.Based on local broadband seismic waveform data as well as a pair of ALOS PALSAR ascending orbit data,we explore the seismogenic mechanism via further constraining the source depth and the ruptured fault.The earthquake caused ground uplift in the southeast of the epicenter area,with a maximum line of sight displacement of about 13.6 cm,much larger than the displacement caused by a M5 earthquake at a typical depth of 10 km,which indicates that the earthquake is very shallow.Through joint inversion of seismic waveform and InSAR data,we obtain the moment magnitude of Suining earthquake as MW4.5,with the strike,dip,and rake of its fault plane as 17°,66° and 90°,respectively,and the centroid depth less than 1 km,supporting that the earthquake occurred at the shallow part of a high angle thrust fault dipping to the southeast.It is further confirmed that the earthquake may be triggered by the diffusion of high-pressure fluid migrating from the underside gas reservoir. | Wangwang GU Sidao NI Shuofan WANG Baolong ZHANG Xinglin LEI Risheng CHU Aizhi GUO Qiang SHEN Hansheng WANG Liming JIANG Minhan SHENG Jiajun CHONG | 2023 | Science China Earth Sciences2023，66，8： | 0 |
| 12 | ON NONLINEAR COAPPROXIMATION IN BANACH SPACES显示文摘The problem of nonlinear coapproximation in Banach spaces is considered, and characterization results and strong coapproximation results are presented. | Chong Li Renxing Ni G.A.Watson | 2001 | Analysis in Theory and Applications2001，17，2： | 0 |
| 13 | 3D S-wave velocity structure of the Ningdu basin in Jiangxi province inferred from ambient noise tomography with dense array显示文摘The Ningdu basin,located in southern Jiangxi province of southwest China,is one of the Mesozoic basin groups which has exploration prospects for geothermal energy.A study on the detailed velocity structure of the Ningdu basin can provide important information for geothermal resource exploration.In this study,we deployed a dense seismic array in the Ningdu basin to investigate the 3D velocity structure and discuss implications for geothermal exploration and geological evolution.Based on the dense seismic array including 35 short-period(5 s-100 Hz)seismometers with an average interstation distance of~5 km,Rayleigh surface wave dispersion curves were extracted from the continuous ambient noise data for surface wave tomographic inversion.Group velocity tomography was conducted and the 3D S-wave velocity structure was inverted by the neighborhood algorithm.The results revealed obvious low-velocity anomalies in the center of the basin,consistent with the low-velocity Cretaceous sedimentary rocks.The basement and basin-controlling fault can also be depicted by the S-wave velocity anomalies.The obvious seismic interface is about 2 km depth in the basin center and decreases to 700 m depth near the basin boundary,suggesting spatial thickness variations of the Cretaceous sediment.The fault features of the S-wave velocity profile coincide with the geological cognition of the western boundary basincontrolling fault,which may provide possible upwelling channels for geothermal fluid.This study suggests that seismic tomography with a dense array is an effective method and can play an important role in the detailed investigations of sedimentary basins. | Long Teng Xiangteng Wang Chunlei Fu Feng Bao Jiajun Chong Sidao Ni Zhiwei Li | 2023 | Earthquake Research Advances2023，3，1： | 0 |
| 14 | Giant blood cyst tumor in the left ventricular outflow tract显示文摘Blood cyst is a rare primary cardiac tumor usuallyaffecting the cardiac valves. Associated with severeocclusion-related complications, it is generally removedsurgically. With a brief review of the literature, wepresent a case of pedunculated tumor in the leftventricular outflow tract identified by echocardiography. | ZHANG Chong HU Jian NI Yi-ming JIANG Zhi-nong XU He-yun | 2007 | Chinese Medical Journal2007，，12： | 0 |
| 15 | 体波接收函数与瑞利波椭圆率联合反演研究显示文摘近年来,结合体波接收函数或瑞利波椭圆率,面波频散已被广泛应用于岩石层结构的成像研究中。由于面波频散是其传播路径的总传播效应,因此联合反演方法需依赖于密集的地震台阵或较高的地震活动性,从而获得局部速度结构。但是,接收函数和瑞利波椭圆率均为具有局部敏感性的单台测量方法,并且能自然地相互合并进行联合反演。本文中,我们对利用瑞利波椭圆率和接收函数联合反演的可行性进行了探讨。我们通过正演模拟进行了敏感性检验,发现接收函数对速度跃变的界面较为敏感,但对长波结构显示较弱的敏感性,这几乎与瑞利波椭圆率互补。因此,利用两种单台测量方法进行联合反演为地震台站下方的速度结构提供了更严格的条件约束。本文提出了一种基于快速模拟退火方法的联合反演算法,对岩石层结构的瑞利波椭圆率和接收函数进行反演。该算法在印度克拉通和美国威利斯顿盆地的应用中,在减少反演的非唯一性方面证明了其有效性。但是,通过该联合反演可能无法获得有效的地壳平均速度,表明有必要结合面波频散(或其他类型的观察研究)、接收函数和瑞利波椭圆率来获得更准确的速度结构。 | Jiajun Chong Sidao Ni Risheng Chu Paul Somerville 张尧(译) 田宝峰(校) | 2017 | 世界地震译丛2017，48，3： | 0 |
| 16 | Development of the electric automatic steering system for agricultural vehicles显示文摘Automatic guidance of agricultural vehicles requires automatic execution of operation commands received from the navigation controller by using electronically controlled mechanisms for wheel steering,speed changing and work implementing.Automatic steering contributes as a prerequisite technique in automatic and semi-automatic agricultural navigation.This research aimed to develop an electric automatic steering system that was compact in its structure and integrated into original steering mechanism in a simply and convenient way for aftermarket modification.A brushless motor and reducer assembly was utilized to provide an adequate steering torque instead of manual maneuver.A rapid assembling approach was proposed by passing the steering shaft through the hollow output shaft.A digital proportional-integral-differential(PID)algorithm was implemented to calculate the rotation speeds and directions by comparing the desired angle and the actual angle,which was implemented in a printed circuit board with a microcontroller unit(MCU)and interface chips.An unmanned wheeled tractor was applied as test platform to integrate the newly developed electric automatic steering system.Tests were conducted to evaluate its performance in terms of stability and responsiveness.An autonomous navigation system guided the tractor along target paths in the field by sending steering commands to the electric automatic steering system.The results show that the steering angle error was less than 0.81°when desired steering angle was less than 10°.The lateral error difference was no more than 4.76 cm when repeating following the same target path,which indicated that the electric automatic steering system responded accurately and robustly to steering commands. | Guangshun An Chong Yu Juan Du Xiang Yin Youliang Ni Chengqian Jin | 2024 | International Journal of Agricultural and Biological Engineering2024，17，1： | 0 |
| 17 | Multisensor Remote Sensing Imagery Super-Resolution with Conditional GAN显示文摘Despite the promising performance on benchmark datasets that deep convolutional neural networks have exhibited in single image super-resolution(SISR),there are two underlying limitations to existing methods.First,current supervised learningbased SISR methods for remote sensing satellite imagery do not use paired real sensor data,instead operating on simulated high-resolution(HR)and low-resolution(LR)image-pairs(typically HR images with their bicubic-degraded LR counterparts),which often yield poor performance on real-world LR images.Second,SISR is an ill-posed problem,and the super-resolved image from discriminatively trained networks with l p norm loss is an average of the infinite possible HR images,thus,always has low perceptual quality.Though this issue can be mitigated by generative adversarial network(GAN),it is still hard to search in the whole solution-space and find the best solution.In this paper,we focus on real-world application and introduce a new multisensor dataset for real-world remote sensing satellite imagery super-resolution.In addition,we propose a novel conditional GAN scheme for SISR task which can further reduce the solution-space.Therefore,the super-resolved images have not only high fidelity,but high perceptual quality as well.Extensive experiments demonstrate that networks trained on the introduced dataset can obtain better performances than those trained on simulated data.Additionally,the proposed conditional GAN scheme can achieve better perceptual quality while obtaining comparable fidelity over the state-of-the-art methods. | Junwei Wang Kun Gao Zhenzhou Zhang Chong Ni Zibo Hu Dayu Chen Qiong Wu | 2021 | Journal of Remote Sensing2021，，1： | 0 |
| 18 | Evaluation of RDF queries via equivalence显示文摘 | Weiwei NI Zhihong CHONG Hu SHU Jiajia BAO Aoying ZHOU | 2013 | Frontiers of Computer Science2013，7，1： | 0 |
| 19 | Direction Finding with Cyclostationarity Analysis Against Frequency Interference显示文摘In this paper, a novel anti-interference direction finding(DF)method for amplitude comparison method based on cyclostationarity is proposed. With the periodic properties of the communication signals, the desired signal’s amplitude value can be effectively obtained even though there is an interference signal whose frequency spectrum overlaps with the desired signal in the environment,and the corresponding incident angle can be estimated accurately with the amplitude comparison method. The influence of interference signal on the amplitude comparison method is discussed and the proposed method’s theoretical feasibility is also analyzed. Compared with the conventional method,simulations are provided to demonstrate the anti-interference capability of the proposed method. The amplitude comparison DF system working at 2.44 GHz and 5.8 GHz is also constructed to verify its feasibility. | Han Liu Jingfeng Chen Ziheng Ding Gang Ni Chong He Ronghong Jin | 2022 | Journal of Communications and Information Networks2022，7，1： | 0 |
| 20 | Amorphous Sn modified nitrogen-doped porous carbon nanosheets with rapid capacitive mechanism for highcapacity and fast-charging lithium-ion batteries显示文摘Sn-based materials are considered as a kind of potential anode materials for lithium-ion batteries(LIBs)owing to their high theoretical capacity.However,their use is limited by large volume expansion deriving from the lithiation/delithiation process.In this work,amorphous Sn modified nitrogen-doped porous carbon nanosheets(ASnNPCNs)are obtained.The synergistic effect of amorphous Sn and high edge-nitrogendoped level porous carbon nanosheets provides ASn-NPCNs with multiple advantages containing abundant defect sites,high specific surface area(214.9 m^(2)·g^(−1)),and rich hierarchical pores,which can promote the lithium-ion storage.Serving as the LIB anode,the as-prepared ASn-NPCNs-750 electrode exhibits an ultrahigh capacity of 1643 mAh·g^(−1) at 0.1 A·g^(−1),ultrafast rate performance of 490 mAh·g^(−1) at 10 A·g^(−1),and superior long-term cycling performance of 988 mAh·g^(−1) at 1 A·g^(−1) after 2000 cycles with a capacity retention of 98.9%.Furthermore,the in-depth electrochemical kinetic test confirms that the ultrahigh-capacity and fast-charging performance of the ASn-NPCNs750 electrode is ascribed to the rapid capacitive mechanism.These impressive results indicate that ASn-NPCNs-750 can be a potential anode material for high-capacity and fast-charging LIBs. | Chong Xu Guang Ma Wang Yang Sai Che Neng Chen Ni Wu Bo Jiang Ye Wang Yankun Sun Sijia Liao Jiahao Yang Xiang Li Guoyong Huang Yongfeng Li | 2023 | Frontiers of Materials Science2023，17，3： | 0 |
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