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1Latest Progress of the Chinese Meteorological Satellite Program and Core Data Processing Technologies显示文摘In this paper,the latest progress,major achievements and future plans of Chinese meteorological satellites and the core data processing techniques are discussed.First,the latest three FengYun(FY)meteorological satellites(FY-2H,FY-3D,and FY-4A)and their primary objectives are introduced Second,the core image navigation techniques and accuracies of the FY meteorological satellites are elaborated,including the latest geostationary(FY-2/4)and polar-orbit(FY-3)satellites.Third,the radiometric calibration techniques and accuracies of reflective solar bands,thermal infrared bands,and passive microwave bands for FY meteorological satellites are discussed.It also illustrates the latest progress of real-time calibration with the onboard calibration system and validation with different methods,including the vicarious China radiance calibration site calibration,pseudo invariant calibration site calibration,deep convective clouds calibration,and lunar calibration.Fourth,recent progress of meteorological satellite data assimilation applications and quantitative science produce are summarized at length.The main progress is in meteorological satellite data assimilation by using microwave and hyper-spectral infrared sensors in global and regional numerical weather prediction models.Lastly,the latest progress in radiative transfer,absorption and scattering calculations for satellite remote sensing is summarized,and some important research using a new radiative transfer model are illustrated.Peng ZHANG Qifeng LU Xiuqing HU Songyan GU Lei YANG Min MIN Lin CHEN Na XU Ling Sun Wenguang BAI Gang MA Di XIAN 2019Advances in Atmospheric Sciences2019,36,9:26
2Ultrasensitive skin‐like wearable optical sensors based on glass micro/nanofibers显示文摘Electronic skin,a class of wearable electronic sensors that mimic the functionalities of human skin,has made remarkable success in applications including health monitoring,human-machine interaction and electronic-biological interfaces.While electronic skin continues to achieve higher sensitivity and faster response,its ultimate performance is fundamentally limited by the nature of low-frequency AC currents.Herein,highly sensitive skin-like wearable optical sensors are demonstrated by embedding glass micro/nanofibers(MNFs)in thin layers of polydimethylsiloxane(PDMS).Enabled by the transition from guided modes into radiation modes of the waveguiding MNFs upon external stimuli,the skin-like optical sensors show ultrahigh sensitivity(1870 k·Pa^-1),low detection limit(7 mPa)and fast response(10μs)for pressure sensing,significantly exceeding the performance metrics of state-of-the-art electronic skins.Electromagnetic interference(EMI)-free detection of high-frequency vibrations,wrist pulse and human voice are realized.Moreover,a five-sensor optical data glove and a 2×2-MNF tactile sensor are demonstrated.These initial results pave the way toward a new category of optical devices ranging from ultrasensitive wearable sensors to optical skins.Lei Zhang Jing Pan Zhang Zhang Hao Wu Ni Yao Dawei Cai Yingxin Xu Jin Zhang Guofei Sun Liqiang Wang Weidong Geng Wenguang Jin Wei Fang Dawei Di Limin Tong 2020Opto-Electronic Advances2020,3,3:12
3Characteristics and formation mechanism of regional haze episodes in the Pearl River Delta of China显示文摘To investigate the characteristics and the specific mechanism of continuous haze,comprehensive measurements were conducted from 15 October to 19 November in the Atmospheric Environment Monitoring Super-Station in Heshan of Guangdong province.Five haze episodes occurred in October and November 2014 in the Pearl River Delta(PRD)region. The meteorological parameters, gas data, chemical compositions, and optical parameters of the aerosols were obtained. Among these events, the second haze episode,with the highest concentration of PM2.5 of 187.51 μg/m^3, was the most severe. NO^3-was always higher than SO_4^(2-), which indicated that motor vehicles played an important role in the haze, even though the oxidation rate from SO_2 to SO_4^(2-)was faster than that of NOXto NO_3^-. The difference between the hourly averages of Na+and K+during the haze episode and clean days was small, implying that straw combustion and sea salt had no significant effect on the occurrence of haze, and the backward trajectories of the air masses also conformed with this result. The air pollutants were difficult to disperse because of the significant decrease in the planetary boundary layer(PBL) height. Relative humidity played a crucial role in the formation of haze by leading to hygroscopic growth of the diameter of aerosols.Wenguang Li Xingang Liu Yuanhang Zhang Kang Sun Yusheng Wu Rui Xue Limin Zeng Yu Qu Junling An 2018Journal of Environmental Sciences2018,30,1:11
4Nitrogen Biological Cycle Characteristics of Seepweed(Suaeda salsa) Wetland in Intertidal Zone of Huanghe(Yellow) River Estuary显示文摘From April 2008 to November 2009,the nitrogen(N) cycle of plantsoil system in seepweed(Suaeda salsa) wetland in the intertidal zone of the Huanghe(Yellow) River estuary was studied.Results showed that soil N had sig-nificant seasonal fluctuations and vertical distribution,and the net N mineralization rates in topsoil were significantly different in growing season(p < 0.01).The N/P ratio(9.87 ± 1.23) of S.salsa was less than 14,indicating that plant growth was limited by N.The N accumulated in S.salsa litter at all times during decomposition,which was ascribed to the N immobilization by microbes from the environment.Soil organic N was the main N stock of plant-soil system,accounting for 97.35% of the total N stock.The N absorption and utilization coefficients of S.salsa were very low(0.0145 and 0.3844,respectively),while the N cycle coefficient was high(0.7108).The results of the N turnovers among compartments of S.salsa wetland showed that the N uptake amount of aboveground part and root were 7.764 g/m2and 4.332 g/m2,respectively.The N translocation amounts from aboveground part to root and from root to soil were 3.881 g/m2 and 0.626 g/m2,respectively.The N translocation amount from aboveground living body to litter was 3.883 g/m2,the annual N return amount from litter to soil was more than 0.125(-) g/m2(minus represented immobilization),and the net N mineralization amount in topsoil(0-15 cm) in growing season was 1.190 g/m2.The assessment of N biological cycle status of S.salsa wetland indicated that N was a very important limiting factor and the ecosystem was situated in unstable and vulnerable status.The S.salsa was seemingly well adapted to the low-nutrient status and vulnerable habitat,and the N quantitative relationships determined in the compartment model might provide scientific base for us to reveal the special adaptive strategy of S.salsa to the vulnerable habitat in the following studies.SUN Zhigao MOU Xiaojie SUN Jingkuan SONG Hongli YU Xiang WANG Lingling JIANG Huanhuan SUN Wanlong SUN Wenguang 2012Chinese Geographical Science2012,22,1:9
5Knowledge-based bridge detection from SAR images显示文摘Automatic bridge detection is an important application of SAR images.Differed from the classical CFAR method,a new knowledge-based bridge detection approach is proposed.The method not only uses the backscattering intensity difference between targets and background but also applies the contextual information and spatial relationship between objects.According to bridges' special characteristics and scattering properties in SAR images,the new knowledge-based method includes three processes:river segmentation,potential bridge areas detection and bridge discrimination.The application to AIRSAR data shows that the new method is not sensitive to rivers' shape.Moreover,this method can detect bridges successfully when river segmentation is not very exact and is more robust than the radius projection method.Wang Wenguang Sun Jinping Hu Rui Mao Shiyi 2009Journal of Systems Engineering and Electronics2009,20,5:5
6Influence of Deep Cryogenic Treatment on Microstructures and Mechanical Properties of an Ultrafine-Grained WC-12Co Cemented Carbide显示文摘Effect of deep cryogenic treatment(DCT) on the microstructures and mechanical behavior of ultrafine-grained WC-12 Co cemented carbide was investigated by using XRD, SEM, and DSC. The phase transformations of pure Co and binder phase Co in cemented carbide were analyzed in detail to correlate the strengthening mechanism with its a→ε phase transition. The results show that DCT resulted in a slight increase in hardness and bending strength of ultrafinegrained WC-12 Co cemented carbide. For the ultrafine-grained cemented carbide after DCT, there is no significant change in the microstructure and the elemental distribution of the cemented carbides, but the fractured morphology shows a feature of plastic deformation. In the cases of pure Co and the binder phase Co in WC-12 Co cemented carbide, they exhibit different features of phase transformation. The improvement of mechanical property of cemented carbide can be attributed to the increased amount of e-Co in WC-12 Co composites after DCT.Hejia Zhang Liqing Chen Jing Sun Wenguang Wang Quanzhao Wang 2014Acta Metallurgica Sinica(English Letters)2014,27,5:4
7Slip behavior of Bi-modal structure in a metastable β titanium alloy during tensile deformation显示文摘β titanium alloys with bi-modal structure which exhibit improved strength-ductility combination and fatigue property are widely used in aviation and aerospace industry.However,owing to the small size of primary α(αp) and nano-scaled multi variant distribution of secondary α platelets(αs),investigating the deformation behavior is really a challenging work.In this work,by applying transmission electron microscopy(TEM),the slip behavior in αp and transformed β matrix with different tensile strain was studied.After α/β solution treatment,the initial dislocation slips on {110} plane with <1 1 1> direction in β matrix.During furtherdeformation,(110),(101) and(1 1 2) multi slip is generated which shows a long straight cro s sing configuration.Dislocation cell is exhibited in β matrix at tensile strain above 20 %.Diffe rent from the solid solution treated sample,high density wavy dislocations are generated in transformedβ matrix.High fraction fine as hinders dislocation motion in β matrix effectively which in turn dominates the strength of the alloy.In primary α phase(αp),a core-shell structure is formed during deformation.Both pyramidal a+c slip and prismatic/basal a slip are generated in the shell layer.In core region,plastic deformation is governed by prismatic/basal a slip.Formation of the core-shell structure is the physical origin of the improved ductility.On one hand,the work hardening layer(shell) improves the strength of αp,which could deform compatibly with the hard transformed β matrix.Meanwhile,the center area(core) deforms homogeneously which will sustain plastic strain effectively and increase the ductility.This paper studies the slip behavior and reveals the origin of the improved strength-ductility combination in Bi-modal structure on a microscopic way,which will give theoretical advises for developing the next generation high strength β titanium alloys.Wenguang Zhu Changsheng Tan Ruoyu Xiao Qiaoyan Sun Jun Sun 2020Journal of Materials Science & Technology2020,54,22:4
8Numerical Research on Inlet Total Pressure Distortion in a Transonic Compressor with Non-Axisymmetric Stator Clearance显示文摘Inlet total pressure distortion has great adverse effects on the aero-engine performance. The distorted flow passes through the compressor and becomes non-uniform in the downstream blade rows. Different from previous studies based on the assumption of circumferential uniformity, this study aims to improve circumferential non-uniform flow with the non-axisymmetric structure. Non-axisymmetric stator clearance was adopted to resolve the effects of non-uniform flow caused by inlet total pressure distortion in this paper. The 9 stators with tip clearance were installed in the distorted region and the flow field structure and performance under different operating conditions was studied. The study finds that the non-axisymmetric compressor with 9 tip clearance stators can ensure compressor efficiency while improving compressor stability margin. What’s more, the separation range and strength in the distorted region can be reduced significantly and the anti-distortion capability of compressor can be enhanced.XU Wenfeng SUN Peng YANG Guogang HUANG Longsheng FU Wenguang 2020Journal of Thermal Science2020,29,4:3
9Construction of the Chinese Veteran Clinical Research (CVCR) Platform for the assessment of non-communicable diseases显示文摘Tan Jiping Li Nan Gao Jing Guo Yuhe Hu Wei Yang Jinsheng Yu Baocheng Yu Jianmin Du Wei Zhang Wenjun Cui Lianqi Wang Qingsong Xia Xiangnan Li Jianjun Zhou Peiyi Zhang Baohe Liu Zhiying Zhang Shaogang Sun Lanying Liu Nan Deng Ruixiang Dai Wenguang Yi Fang Chen Wenjun Zhang Yongqing Xue Shenwu Cui Bo Zhao Yiming Wang Luning 2014Chinese Medical Journal2014,,3:3
10A Bio-inspired Soft Robotic Arm: Kinematic Modeling and Hydrodynamic Experiments显示文摘Zheyuan Gong Jiahui Cheng Xingyu Chen Wenguang Sun Xi Fang Kainan Hu Zhexin Xie Tianmiao Wang Li Wen 2018Journal of Bionic Engineering2018,15,2:3
11Biomedical polymers: synthesis, properties, and applications显示文摘Biomedical polymers have been extensively developed for promising applications in a lot of biomedical fields, such as therapeutic medicine delivery, disease detection and diagnosis, biosensing, regenerative medicine, and disease treatment. In this review, we summarize the most recent advances in the synthesis and application of biomedical polymers, and discuss the comprehensive understanding of their property-function relationship for corresponding biomedical applications. In particular, a few burgeoning bioactive polymers, such as peptide/biomembrane/microorganism/cell-based biomedical polymers, are also introduced and highlighted as the emerging biomaterials for cancer precision therapy. Furthermore, the foreseeable challenges and outlook of the development of more efficient, healthier and safer biomedical polymers are discussed. We wish this systemic and comprehensive review on highlighting frontier progress of biomedical polymers could inspire and promote new breakthrough in fundamental research and clinical translation.Wei-Hai Chen Qi-Wen Chen Qian Chen Chunyan Cui Shun Duan Yongyuan Kang Yang Liu Yun Liu Wali Muhammad Shiqun Shao Chengqiang Tang Jinqiang Wang Lei Wang Meng-Hua Xiong Lichen Yin Kuo Zhang Zhanzhan Zhang Xu Zhen Jun Feng Changyou Gao Zhen Gu Chaoliang He Jian Ji Xiqun Jiang Wenguang Liu Zhuang Liu Huisheng Peng Youqing Shen Linqi Shi Xuemei Sun Hao Wang Jun Wang Haihua Xiao Fu-Jian Xu Zhiyuan Zhong Xian-Zheng Zhang Xuesi Chen 2022Science China Chemistry2022,65,6:2
12Efficient enantioselective synthesis of CF_(2)Hcontaining dispiro[benzo[b]thiophene-oxindolepyrrolidine]s via organocatalytic cycloaddition显示文摘An efficient and practical organocatalytic asymmetric[3+2]cycloaddition of difluoromethylated ketoimines and methyleneindolinones catalyzed by a quinine-derived squaramide has been disclosed.Under mild conditions,a broad range of CF_(2)H-containing dispiro[benzo[b]thiophene-oxindole-pyrrolidine]s bearing four adjacent chiral centers including two vicinal spiro quaternary stereocenters were obtained in high yields(up to 99%yield)with excellent diastereoselectivities(>20:1 dr,in all cases)and enantioselectivities(up to 99%ee).Yabo Deng Yongzhen Li Yalan Wang Shuo Sun Sichao Ma Pengfei Jia Wenguang Li Kairong Wang Wenjin Yan 2022Organic Chemistry Frontiers2022,9,1:1
13A hyperbranched polymer-based water-resistant adhesive:Durable underwater adhesion and primer for anchoring anti-fouling hydrogel coating显示文摘Direct deployment of gluing and achieving durable robust adhesion in water is challenging due to difficulty in repelling interface water.This work reports a novel hyperbranched polymer-based water-resistant adhesive(HBPBA)based on Michael addition reaction of multi-vinyl monomers with dopamine and 3-aminophenylboronic acid.Upon encountering water,the HBPBA forms coacervates whose hydrophobic chains aggregate to displace interface water,and meanwhile the catechols exposing outwards contribute to underwater adhesion.The HBPBA can strongly glue diverse substrates including PTFE,PE,PET,ceramic,Ti and stainless steel.The HBPBA can maintain stable adhesion in different environments,such as tap water,simulated sea water,PBS,and a wide range of pH solutions(pH 2 to 10)for 3 months,supposedly due to the complexation of catechol with boronic acid.Intriguingly,HBPBA film can be bonded to the titanium surface as a primer,which firmly anchors the antifouling PNAGAPCBAA hydrogel coating through copolymerization of remaining double bonds in HBPBA and NAGA plus CBAA.The PNAGA-PCBAA hydrogel-modified titanium is biocompatible and shows outstanding antifouling ability both in vitro and in vivo.This work proposes a new strategy for creating underwater deployable and water-resistant adhesives that may find promising applications in engineering and biomedical fields.ZHANG YaHan CUI ChunYan SUN YaGe ZHANG XiaoPing YANG Rong YANG JianHai XIE Fei LIU WenGuang 2022Science China(Technological Sciences)2022,65,1:1
14Profile of volatile compounds in 12 Chinese soy sauces produced by high-salt-diluted state fermentation显示文摘SUN Shuyang JIANG Wenguang ZHAO Yuping 2010Journal of the Institute of Brewing2010,116,3:1
15γ-Tocotrienol-induced apoptosis in human gastric cancer SGC-7901 cells is associated with a suppression in mitogen-activated protein kinase signalling显示文摘Wenguang Sun Qi Wang Bingqing Chen 2008British Journal of Nutrition2008,99,:1
16Linear Acceleration of an Undulatory Robotic Fish with Dynamic Morphing Median Fin under the Instantaneous Self-propelled Condition显示文摘Fish commonly execute rapid linear accelerations initiated during steady swimming,yet the function of the median fins during this process is less understood.We find that the erection/folding time(from the starting time of the linear acceleration(0 s)to the starting time of the folding movement of the fin),as well as the spreading area of the median fins,actively change during the linearacceleration of the live largemouth bass(Micropterus salmoides).To better understand the influence of the folding time and the area change of the median fins on the linear acceleration,we implemented an undulatory biomimetic robotic fish with soft median fins that can be programmed to erect and fold,just like a live fish.To characterize the acceleration performance of the robotic fish,we developed a'self-propelled'experiment technique based on the Kalman filter and Proportional-Integral-Derivative(PID)control algorithm.The experiments on the robotic fish show the acceleration induced by fully-erected median fins increases by 46.3%.Fully-erected median fins positively contribute to propulsion primarily at the onset stage of the linear acceleration while result in a significant decrease in steady swimming speed by 25%,which suggests a large drag force is induced at the steady swimming stage due to the enlarged wetted area.Parametric sweeping experiments on erection/folding time and spreading area demonstrate a proper combination of the erection/folding time and the spreading area enhances the mean linear acceleration by up to 85%.Particle Image Velocimetry(PIV)results reveal that the vortexes shed by the erected dorsal fin are stronger than those shed by the folded fin.As the acceleration process progresses,the thrust generated by the dorsal fins gradually is weakened until only resistance is generated in the end.Our findings may shed light on the realization of controllable surfaces on high performance fish-inspired robotic systems in the future.Wenguang Sun Zemin Liu Ziyu Ren Gang Wang Tao Yuan Li Wen 2020Journal of Bionic Engineering2020,17,2:1
17Resource types, formation, distribution and prospects of coal-measure gas显示文摘Coal-measure gas is the natural gas generated by coal, carbonaceous shale, and dark shale in coal-measure strata. It includes resources of continuous-type coalbed methane (CBM), shale gas and tight gas reservoirs, and trap-type coal-bearing gas reservoirs. Huge in resources, it is an important gas source in the natural gas industry. The formation and distribution characteristics of coal-measure gas in San Juan, Surat, West Siberia and Ordos basins are introduced in this paper. By reviewing the progress of exploration and development of coal-measure gas around the world, the coal-measure gas is confirmed as an important strategic option for gas supply. This understanding is mainly manifested in three aspects. First, globally, the Eurasian east-west coal-accumulation belt and North American north-south coal-accumulation belt are two major coal-accumulation areas in the world, and the Late Carboniferous–Permian, Jurassic and end of Late Cretaceous–Neogene are 3 main coal-accumulation periods. Second, continuous-type and trap-type are two main accumulation modes of coal-measure gas;it is proposed that the area with gas generation intensity of greater than 10×10^8 m^3/km^2 is essential for the formation of large coal-measure gas field, and the CBM generated by medium- to high-rank coal is usually enriched in syncline, while CBM generated by low-rank coal is likely to accumulate when the source rock and caprock are in good configuration. Third, it is predicted that coal-measure gas around the world has huge remaining resources, coal-measure gas outside source is concentrated in Central Asia-Russia, the United States, Canada and other countries/regions, while CBM inside source is largely concentrated in 12 countries. The production of coal-measure gas in China is expected to exceed 1000×10^8 m^3 by 2030, including (500–550)×10^8 m^3 conventional coal-measure gas,(400–450)×10^8 m^3 coal-measure tight gas, and (150–200)×10^8 m^3 CBM.ZOU Caineng YANG Zhi HUANG Shipeng MA Feng SUN Qinping LI Fuheng PAN Songqi TIAN Wenguang 2019Petroleum Exploration and Development2019,46,3:1
18Aerodynamic Characteristic Research on Final Stage Stator of a Highly Loaded Fan显示文摘Due to corner separation and other complex three-dimensional flows existing in the highly loaded stator, which influences the fan performance significantly, highly loaded stator blades of a transonic fan with a maximum camber angle of 57° were studied in this paper and sector cascade experiment was adopted. In order to get the stator aerodynamic parameters as realistic as possible and conduct the experiment without the existence of rotor, an adjustable guide vane was designed to simulate the velocity magnitude and direction of the stator inlet flow. Results show that the adjustable guide vane can simulate the rotor outlet velocity direction and magnitude in most span range. The deviation angle is positive and the maximum value is nearly 21° because the severe separation is at 27% span. Corner separation exists on both pressure side and suction side and the location of separation initiation is determined. Finally, the stator blades were redesigned with some suction slots on the suction side. Experiment results show that the suction slots change the flow field structure, increase the capability of flow turning, and decrease the flow loss.FU Wenguang SUN Peng ZHONG Jingjun PAN Ruochi LI Lili YANG Muxiao 2018Journal of Thermal Science2018,27,6:1
19Characterization of the aroma-active compounds in five sweet cherry cultivars grown in Yantai (China)显示文摘SUN Shuyang JIANG Wenguang ZHAO Yuping 2010Flvaour and Fragrance Journal2010,25,:1
20Wharton’s jelly MSC-derived extracellular vehicles-loaded hyaluronic acid-alginate adhesives for treatment of osteoarthritis显示文摘The repair of cartilage injury caused by osteoarthritis(OA)has long plagued clinicians.Mesenchymal stem cell(MSC)-derived small extracellular vesicles(sEVs)show great potential in cartilage regeneration and immunoregulation to realise cell-free therapy.However,unprotected sEVs are prone to be washed away by the flow of fluids and degraded in vivo.In this work,we successfully revealed that human Wharton’s jelly of umbilical cord-derived MSC(hWJMSC)sEVs promote proliferation,inhibit apoptosis,and attenuate the inflammation of chondrocytes in vitro.In light of the long period required for cartilage regeneration,we synthesised an injectable and adhesive aldehyded sodium alginate crosslinked acylhydrazide-modified hyaluronic acid(ALG-CHO/HHA)hydrogel loaded with sEVs to boost the reparative effect of the sEVs.The hydrogel-bearing sEVs was injected into cartilage defects where they adhered to the cartilage surface.In this configuration,the sEVs were delivered in a sustainable manner with the degradation of the hydrogel at the injury sites,thus contributing to highly efficient cartilage repair by regulating the regenerative and immune microenvironment.The ALG-CHO/HHA-sEV platform meets the clinical demand for long-lasting repair with a single injection.Thus,this work provides a new idea and theoretical basis for the clinical application of sEVs in the treatment of OA.Yanhong Zhao Xige Zhao Hainan Xu Yi Xing Tengling Wu Xun Sun Mingjie Kuang Xinlong Ma Wenguang Liu Qiang Yang 2023Journal of Materials Science & Technology2023,,11:0
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