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| 1 | Multi-block SSD based on small object detection for UAV railway scene surveillance显示文摘A method of multi-block Single Shot Multi Box Detector(SSD)based on small object detection is proposed to the railway scene of unmanned aerial vehicle surveillance.To address the limitation of small object detection,a multi-block SSD mechanism,which consists of three steps,is designed.First,the original input images are segmented into several overlapped patches.Second,each patch is separately fed into an SSD to detect the objects.Third,the patches are merged together through two stages.In the first stage,the truncated object of the sub-layer detection result is spliced.In the second stage,a sub-layer suppression and filtering algorithm applying the concept of non-maximum suppression is utilized to remove the overlapped boxes of sub-layers.The boxes that are not detected in the main-layer are retained.In addition,no sufficient labeled training samples of railway circumstance are available,thereby hindering the deployment of SSD.A two-stage training strategy leveraging to transfer learning is adopted to solve this issue.The deep learning model is preliminarily trained using labeled data of numerous auxiliaries,and then it is refined using only a few samples of railway scene.A railway spot in China,which is easily damaged by landslides,is investigated as a case study.Experimental results show that the proposed multi-block SSD method produces an overall accuracy of 96.6%and obtains an improvement of up to 9.2%compared with the traditional SSD. | Yundong LI Han DONG Hongguang LI Xueyan ZHANG Baochang ZHANG Zhifeng XIAO | 2020 | Chinese Journal of Aeronautics2020，33，6： | 19 |
| 2 | Coupling analysis of social-economic water consumption and its effects on the arid environments in Xinjiang of China based on the water and ecological footprints显示文摘In arid areas,ecological degradation aroused by over-exploitation of fresh water,expansion of artificial oasis and shrinkage of natural oasis,has drawn attention of many scholars and officials.The water and ecological footprints can be used to quantitatively evaluate the water consumption of social-economic activities and their influence on the eco-environments.In addition,increase of the water footprint indicates the expansion of artificial oasis,and the influence on the natural oasis could be reflected by the variation of the ecological footprint.This study was conducted to answer a scientific question that what is the quantitative relationship between the expansion of the artificial oasis and the degradation of the natural oasis in the arid environments of Xinjiang,China.Thus,based on the social-economic data,water consumption data and meteorological data during 2001–2015,we calculated the water and ecological footprints to express the human-related pressure exerted on the water resources and arid environments in Xinjiang(including 14 prefectures and cities),and explore the relationship between the water and ecological footprints and its mechanism by using the coupling analysis and Granger causality test.The results show that both the water and ecological footprints of Xinjiang increased significantly during 2001–2015,and the increasing rate of the ecological footprint was much faster than that of the water footprint.The coupling degree between the water and ecological footprints was relatively high at the temporal scale and varied at the spatial scale.Among the 14 prefectures and cities examined in Xinjiang,the greater social-economic development(such as in Karamay and Urumqi)was associated with the lower coupling degree between the two footprints.Increases in the water footprint will cause the ecological footprint to increase,such that a 1-unit increase in the consumption of water resources would lead to 2–3 units of ecological degradation.The quantitative relationship between the increases of the water and ecological footprints,together with the intensities of water consumption both in the natural and artificial oases of Tarim River Basin,have approved the fact that the formation and expansion of 1 unit of the artificial oasis would bring about the degradation of 2 units of the natural oasis.These conclusions not only provide a technical basis for sustainable development in Xinjiang,but also offer a theoretical guide and scientific information that could be used in similar arid areas around the world. | ZHANG Pei DENG Mingjiang LONG Aihua DENG Xiaoya WANG Hao HAI Yang WANG Jie LIU Yundong | 2020 | Journal of Arid Land2020，12，1： | 8 |
| 3 | Control of group velocity in an annular chain of microring coupled-resonator optical waveguides显示文摘In order to control group velocity,an annular chain of microring coupled-resonator optical waveguides was analyzed,and its transmission spectra were obtained using the transfer matrix method. The result showed that the curvature of the chain caused the dispersion curves to shift and the resonance fre-quency got fixed. It is therefore concluded that the group velocity of light in the annular chain of mi-croring coupled-resonator optical waveguides can be controlled by adjusting the curvature of the chain. We believe that such an annular chain can be used as an optical buffer or signal retarder for optical communication. | TIAN He ZHANG YunDong WANG Nan YUAN Ping | 2007 | Chinese Science Bulletin2007，52，22： | 4 |
| 4 | Enhancing rice grain production by manipulating the naturally evolved cis-regulatory element-containing inverted repeat sequence of OsREM20显示文摘Grain number per panicle(GNP)is an important agronomic trait that contributes to rice grain yield.Despite its importance in rice breeding,the molecular mechanism underlying GNP regulation remains largely unknown.In this study,we identified a previously unrecognized regulatory gene that controls GNP in rice,Oryza sativa REPRODUCTIVE MERISTEM 20(OsREM20),which encodes a B3 domain transcription factor.Through genetic analysis and transgenic validation we found that genetic variation in the CArG box-containing inverted repeat(IR)sequence of the OsREM20 promoter alters its expression level and contributes to GNP variation among rice varieties.Furthermore,we revealed that the IR sequence regulates OsREM20 expression by affecting the direct binding of OsMADS34 to the CArG box within the IR sequence.Interestingly,the divergent pOsREM20IR and pOsREM20ΔIR alleles were found to originate from different Oryza rufipogon accessions,and were independently inherited into the japonica and indica subspecies,respectively,during domestication.Importantly,we demonstrated that IR sequence variations in the OsREM20 promoter can be utilized for germplasm improvement through either genome editing or traditional breeding.Taken together,our study characterizes novel genetic variations responsible for GNP diversity in rice,reveals the underlying molecular mechanism in the regulation of agronomically important gene expression,and provides a promising strategy for improving rice production by manipulating the cis-regulatory element-containing IR sequence. | Xiaowei Wu Yan Liang Hengbin Gao Jiyao Wang Yan Zhao Lekai Hua Yundong Yuan Ahong Wang Xiaohui Zhang Jiafan Liu Jie Zhou Xiangbing Meng Dahan Zhang Shaoyang Lin Xuehui Huang Bin Han Jiayang Li Yonghong Wang | 2021 | Molecular Plant2021，14，6： | 3 |
| 5 | Reactivities of d^0 transition metal complexes toward oxygen:Synthetic and mechanistic studies显示文摘Transition metals such as Fe in porphyrin complexes are known to bind or react with O2,and such reactions are critical to many biological functions and catalytic oxidation using O2.The transition metals in these reactions often contain valence d electrons,and oxidation of metals is an important step.In recent years,reactions of O2 with d0 transition metal complexes such as Hf(NR2)4(R=alkyl) have been used to make metal oxide thin films as insulating gate materials in new microelectronic devices.This feature article discusses our recent studies of such reactions and the formation of TiO2 thin films.In contrast to the reactions of many dn complexes where metals are often oxidized,reactions of d0 complexes such as Hf(NMe2)4 and Ta(NMe2)4(SiR3) with O2 usually lead to the oxidation of ligands,forming,e.g.,-ONMe2 and -OSiR3 from-NMe2 and-SiR3 ligands,respectively.Mechanistic and theoretical studies of these reactions have revealed pathways in the formation of the metal oxide thin films as microelectronic materials. | CHEN ShuJian ZHANG XinHao LIN ZhenYang WU YunDong XUE ZiLing | 2009 | Science China Chemistry2009，52，11： | 2 |
| 6 | Effective control of Listeria monocytogenes by combination of nisin formulated and slowly re2 leased into a broth system显示文摘 | Yundong Chi - Zhang Kit L Yam | 2004 | International Journal of Food Mi 2 crobiology2004，90，： | 1 |
| 7 | High‑Performance Flexible Microneedle Array as a Low‑Impedance Surface Biopotential Dry Electrode for Wearable Electrophysiological Recording and Polysomnography显示文摘Microneedle array(MNA)electrodes are an effective solution to achieve high-quality surface biopotential recording without the coordination of conductive gel and are thus very suitable for long-term wearable applications.Existing schemes are limited by flexibility,biosafety,and manufacturing costs,which create large barriers for wider applications.Here,we present a novel flexible MNA electrode that can simultaneously achieve flexibility of the substrate to fit a curved body surface,robustness of microneedles to penetrate the skin without fracture,and a simplified process to allow mass production.The compatibility with wearable wireless systems and the short preparation time of the electrodes significantly improves the comfort and convenience of electrophysiological recording.The normalized electrode–skin contact impedance reaches 0.98 kΩcm^(2)at 1 kHz and 1.50 kΩcm^(2)at 10 Hz,a record low value compared to previous reports and approximately 1/250 of the standard electrodes.The morphology,biosafety,and electrical/mechanical properties are fully characterized,and wearable recordings with a high signal-to-noise ratio and low motion artifacts are realized.The first reported clinical study of microneedle electrodes for surface electrophysiological monitoring was conducted in tens of healthy and sleep-disordered subjects with 44 nights of recording(over 8 h per night),providing substantial evidence that the electrodes can be leveraged to substitute for clinical standard electrodes. | Junshi Li Yundong Ma Dong Huang Zhongyan Wang Zhitong Zhang Yingjie Ren Mengyue Hong Yufeng Chen Tingyu Li Xiaoyi Shi Lu Cao Jiayan Zhang Bingli Jiao Junhua Liu Hongqiang Sun Zhihong Li | 2022 | Nano-Micro Letters2022，14，8： | 1 |
| 8 | Optical Nonlinearities and Optical Limiting Properties of Pbs Semieonduetor Nanobelts显示文摘 | Bei Cao Yundong Zhang Honggang Zhang | 2005 | Chinese Optics Letters (supplement)2005，3，： | 1 |
| 9 | Airtight negative pressure dust-control technology and application of transpcrsite in the coal conveyer belt system 显示文摘 | Ma Yundong Jia Huiyan Zhang Darning | 2008 | Journal of coal science & engineering2008，，14： | 1 |
| 10 | The nonlinear absorption and optical limiting in phenoxy-phthalo- cyanines liquid in nano-and femto-second regime: Experi- mental studies显示文摘 | Zhang Yundong Zhao Zhenyu Yao Chengbao | 2014 | Optics Laser Technol2014，58，： | 1 |
| 11 | Airtight negative pressure dust-control technology and application of transpersite in the coal conveyer belt system显示文摘 | Ma Yundong Jia Huiyan Zhang Darning | 2008 | Joumal of Coal Science & Engineering2008，，14： | 1 |
| 12 | Study on vegetation succession rules of mining wasteland in s:ni-add areas显示文摘 | Zhang Xiaowci Ma Yundong | 2008 | Energy and Environment2008，，2： | 1 |
| 13 | Stress-Induced Corticotropin-Releasing Hormone-Mediated NLRP6 Inflammasome Inhibition and Transmissible Enteritis in Mice显示文摘 | Yundong Sun Min Zhang Chun–Chia Chen Merritt Gillilland Xia Sun Mohamad El–Zaatari Gary B. Huffnagle Vincent B. Young Jiajie Zhang Soon–Cheol Hong Yu–Ming Chang Deborah L. Gumucio Chung Owyang John Y. Kao | 2013 | Gastroenterology2013，，7： | 1 |
| 14 | Whole-body PET tracking of a D-dodecapeptide and its radiotheranostic potential for PD-L1 overexpressing tumors显示文摘Peptides that are composed of dextrorotary(D)-amino acids have gained increasing attention as a potential therapeutic class.However,our understanding of the in vivo fate of D-peptides is limited.This highlights the need for whole-body,quantitative tracking of D-peptides to better understand how they interact with the living body.Here,we used mouse models to track the movement of a programmed death-ligand 1(PD-L1)-targeting D-dodecapeptide antagonist(DPA)using positron emission tomography(PET).More specifically,we profiled the metabolic routes of[^(64)Cu]DPA and investigated the tumor engagement of[^(64)Cu/^(68)Ga]DPA in mouse models.Our results revealed that intact[^(64)Cu/^(68)Ga]DPA was primarily eliminated by the kidneys and had a notable accumulation in tumors.Moreover,a single dose of[^(64)Cu]DPA effectively delayed tumor growth and improved the survival of mice.Collectively,these results not only deepen our knowledge of the in vivo fate of D-peptides,but also underscore the utility of D-peptides as radiopharmaceuticals. | Kuan Hu Wenyu Wu Lin Xie Hao Geng Yiding Zhang Masayuki Hanyu Lulu Zhang Yinghuan Liu Kotaro Nagatsu Hisashi Suzuki Jialin Guo Yundong Wu Zigang Li Feng Wang Mingrong Zhang | 2022 | Acta Pharmaceutica Sinica B2022，12，3： | 1 |
| 15 | Airtight negative pressure dust-control technology and application of transvestite in the coal conveyer belt system显示文摘 | MA YUNDONG JIA HUIYAN ZHANG DAMING | 2008 | Journal of coal science&engineering2008，，4： | 1 |
| 16 | A homologous and molecular dual-targeted biomimetic nanocarrier for EGFR-related non-small cell lung cancer therapy显示文摘The abnormal activation of epidermal growth factor receptor(EGFR)drives the development of non-small cell lung cancer(NSCLC).The EGFR-targeting tyrosine kinase inhibitor osimertinib is frequently used to clinically treat NSCLC and exhibits marked efficacy in patients with NSCLC who have an EGFR mutation.However,free osimertinib administration exhibits an inadequate response in vivo,with only~3%patients demonstrating a complete clinical response.Consequently,we designed a biomimetic nanoparticle(CMNP^(@Osi))comprising a polymeric nanoparticle core and tumor cell-derived membrane-coated shell that combines membrane-mediated homologous and molecular targeting for targeted drug delivery,thereby supporting a dual-target strategy for enhancing osimertinib efficacy.After intravenous injection,CMNP^(@Osi)accumulates at tumor sites and displays enhanced uptake into cancer cells based on homologous targeting.Osimertinib is subsequently released into the cytoplasm,where it suppresses the phosphorylation of upstream EGFR and the downstream AKT signaling pathway and inhibits the proliferation of NSCLC cells.Thus,this dual-targeting strategy using a biomimetic nanocarrier can enhance molecular-targeted drug delivery and improve clinical efficacy. | Bin Xu Fanjun Zeng Jialong Deng Lintong Yao Shengbo Liu Hengliang Hou Yucheng Huang Hongyuan Zhu Shaowei Wu Qiaxuan Li Weijie Zhan Hongrui Qiu Huili Wang Yundong Li Xianzhu Yang Ziyang Cao Yu Zhang Haiyu Zhou | 2023 | Bioactive Materials2023，，9： | 1 |
| 17 | Effective control of Listeria monocytogenes by combination of nisin formulated and slowly released into a broth system显示文摘 | Yundong Chi - Zhang Kit L Yam | 2004 | International Journal of Food Microbiology2004，90，： | 1 |
| 18 | Fatigue test loading methodfor wagon body basedon measured load显示文摘Purpose–In this paper,the C80 special coal gondola car was taken as the subject,and the load test data of the car body at the center plate,side bearing and coupler measured on the dedicated line were broken down to generate the random load component spectrums of the car body under five working conditions,namely expansion,bouncing,rolling,torsion and pitching according to the typical motion attitude of the car body.Design/methodology/approach–On the basis of processing the measured load data,the random load component spectrums were equivalently converted into sinusoidal load component spectrums for bench test based on the principle of pseudo-damage equivalence of load.Relying on the fatigue and vibration test bench of the whole railway wagon,by taking each sinusoidal load component spectrum as the simulation target,the time waveform replication(TWR)iteration technology was adopted to create the drive signal of each loading actuator required for the fatigue test of car body on the bench,and the drive signal was corrected based on the equivalence principle of measured stress fatigue damage to obtain the fatigue test loads of car body under various typical working conditions.Findings–The fatigue test results on the test bench were substantially close to the measured test results on the line.According to the results,the relative error between the fatigue damage of the car body on the test bench and the measured damage on the line was within the range of16.03%–27.14%.Originality/value–The bench test results basically reproduced the fatigue damage of the key parts of the car body on the line. | Qiang Zhang Xiaofeng Li Yundong Ma | 2023 | Railway Sciences2023，2，1： | 0 |
| 19 | Patent Competence Analysis of CNPC显示文摘The patent work of China National Petroleum Corporation (CNPC) has been boosted along with increasing applications in recent years. Although patent quality improved gradually, some indicators of patent quality such as the proportion of inventions, the authorization rate and availability are still relatively low. At present, CNPC has a certain patent competitive | Zhang Yundong Zhao Xing Wan Yong | 2009 | China Oil & Gas2009，16，2： | 0 |
| 20 | Study of third-order nonlinear susceptibility of polySchiff base containing triphenylamine显示文摘PolySchiff base containing triphenylamine has been synthesized by polycondensation and character-ized by FT-IR,NMR,UV-visible spectrometer. Measurements of the third-order optical nonlinear sus-ceptibility χ(3) by Z-scan technique have shown that the large nonlinearity is dominated by the two-photon absorption in PSB. The sign and size of real part Reχ(3) ,nonlinear refractive index n2 have been measured with the condition of 532 nm,8 ns-duration pulses to be -1.23×10-10 esu,-3.06×10-12 esu;nonlinear absorption index β and size of image part Imχ(3) to be 3.63×10-10 m/W,1.15×10-11 esu,respec-tively,so the third-order nonlinear susceptibility χ(3) is 1.19×10-11 esu. The value is larger than other polymers reported. PSB is self-focusing material and has potential application in nonlinear optic field. | NIU HaiJun WANG Wen HUANG YuDong ZHANG YunDong ZHANG YunJun BAI XuDuo LIU Yuan | 2007 | Science China Chemistry2007，50，2： | 0 |
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