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17篇 您的检索式:作者名="Jiacheng Cao"
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1Evaluating the Accuracy of ERA5 Wave Reanalysis in the Water Around China显示文摘Wave parameters, such as wave height and wave period, are important for human activities, such as navigation, ocean engineering and sediment transport, etc. In this study, wave data from six buoys around Chinese waters, are used to assess the quality of wave height and wave period in the ERA5 reanalysis of the European Centre for Medium-Range Weather Forecasts. Annual hourly data with temporal resolution are used. The difference between the significant wave height(SWH) of ERA 5 and that of the buoy varies from-0.35 m to 0.30 m for the three shallow locations;for the three deep locations, the variation ranges from-0.09 m to 0.09 m. The ERA5 SWH data show positive biases, indicating an overall overestimation for all locations, except for E2 and S1 where underestimation is observed. During the tropical cyclone period, a large(about 32%) underestimation of the maximum SWH in the ERA5 data is observed. Hence, the ERA5 SWH data cannot be used for design applications without site-specific validation. The difference between the annual wave period from ERA5 and the mean wave period from the buoys varies from-1.31 s to 0.4 s. Inter-comparisons suggest that the ERA5 dataset is consistent with the annual mean SWH. However, for the average period, the performance is not good, and half of the correlation coefficients in the four points are less 50%. Overall, the deep water area simulation effect is better than that in the shallow water.SHI Hongyuan CAO Xuefeng LI Qingjie LI Delei SUN Jiacheng YOU Zaijin SUN Qingying 2021Journal of Ocean University of China2021,20,1:5
2An antioxidant system through conjugating superoxide dismutase onto metal-organic framework for cardiac repair显示文摘Acute myocardial infarction(AMI)remains a dominant origin of morbidity,mortality and disability worldwide.Increases in reactive oxygen species(ROS)are key contributor to excessive cardiac injury after AMI.Here we developed an immobilized enzyme with Superoxide Dismutase(SOD)activity cross-link with Zr-based metal-organic framework(ZrMOF)(SOD-ZrMOF)for mitigate ROS-caused injury.In vitro and in vivo evidence indicates that SOD-ZrMOF exhibits excellent biocompatibility.By efficiently scavenging ROS and suppressing oxidative stress,SOD-ZrMOF can protect the function of mitochondria,reduce cell death and alleviate inflammation.More excitingly,long-term study using an animal model of AMI demonstrated that SOD-ZrMOF can reduce the infarct area,protect cardiac function,promote angiogenesis and inhibit pathological myocardial remodeling.Therefore,SOD-ZrMOF holds great potential as an efficacious and safe nanomaterial treatment for AMI.Jiacheng Guo Zhenzhen Yang Yongzheng Lu Chunyan Du Chang Cao Bo Wang Xiaoting Yue Zenglei Zhang Yanyan Xu Zhen Qin Tingting Huang Wei Wang Wei Jiang Jinying Zhang Junnan Tang 2022Bioactive Materials2022,7,4:4
3The use of supercytokines, immunocytokines, engager cytokines, and other synthetic cytokines in immunotherapy显示文摘Cytokines exert powerful immunomodulatory effects that are critical to physiology and pathology in humans.The application of natural cytokines in clinical studies has not been clearly established,and there are often problems associated with toxicity or lack of efficacy.The key reasons can be attributed to the pleiotropy of cytokine receptors and undesired activation of off-target cells.With a deeper understanding of the structural principles and functional signals of cytokine-receptor interactions,artificial modification of cytokine signaling through protein engineering and synthetic immunology has become an increasingly feasible and powerful approach.Engineered cytokines are designed to selectively target cells.Herein,the theoretical and experimental evidence of cytokine engineering is reviewed,and the“supercytokines”resulting from structural enhancement and the“immunocytokines”generated by antibody fusion are described.Finally,the“engager cytokines”formed by the crosslinking of cytokines and bispecific immune engagers and other synthetic cytokines formed by nonnatural analogs are also discussed.Xiaohu Zheng Yaqi Wu Jiacheng Bi Yingying Huang Ying Cheng Yangyang Li Yuwei Wu Guoshuai Cao Zhigang Tian 2022Cellular & Molecular Immunology2022,19,2:4
4Physiological and anatomical changes in two rapeseed (Brassica napus L.) genotypes under drought stress conditions显示文摘Understanding the mechanisms of drought resistance in crop species is crucial for the selection and breeding of tolerant rapeseed(Brassica napus L.)varieties.The present study aimed to assess the physiological and anatomical responses of two rapeseed genotypes,P287(drought-tolerant)and T88(drought-sensitive)under three intensities of drought stress.All physiological and anatomical parameters related to drought acclimation were significantly altered in both genotypes under stress conditions.At the fourth-leaf stage,the relative water content,chlorophyll content,protein content,malondialdehyde content,and the activities of peroxidase and catalase in P287 were significantly higher than those in T88,particularly under severe drought conditions.After rehydration,all physiological indexes recovered rapidly,especially in P287.In addition,under drought stress,compared with T88,P287 had thicker palisade tissue,thinner spongy tissue,higher ratio of chloroplast length to chloroplast width,higher stomatal density and stomatal closure rate.Overall,the interaction between physiological and anatomical features improved the drought tolerance of P287 under drought stress conditions.Jiacheng Zhu Dongfang Cai Jianping Wang Jinhua Cao Yancheng Wen Junping He Lei Zhao Dongguo Wang Shufen Zhang 2021Oil Crop Science2021,6,2:2
5Recent Development of Gas Sensing Platforms Based on 2D Atomic Crystals显示文摘Sensors,capable of detecting trace amounts of gas molecules or volatile organic compounds(VOCs),are in great demand for environmental monitoring,food safety,health diagnostics,and national defense.In the era of the Internet of Things(IoT)and big data,the requirements on gas sensors,in addition to sensitivity and selectivity,have been increasingly placed on sensor simplicity,room temperature operation,ease for integration,and flexibility.The key to meet these requirements is the development of high-performance gas sensing materials.Two-dimensional(2D)atomic crystals,emerged after graphene,have demonstrated a number of attractive properties that are beneficial to gas sensing,such as the versatile and tunable electronic/optoelectronic properties of metal chalcogenides(MCs),the rich surface chemistry and good conductivity of MXenes,and the anisotropic structural and electronic properties of black phosphorus(BP).While most gas sensors based on 2D atomic crystals have been incorporated in the setup of a chemiresistor,field-effect transistor(FET),quartz crystal microbalance(QCM),or optical fiber,their working principles that involve gas adsorption,charge transfer,surface reaction,mass loading,and/or change of the refractive index vary from material to material.Understanding the gas-solid interaction and the subsequent signal transduction pathways is essential not only for improving the performance of existing sensing materials but also for searching new and advanced ones.In this review,we aim to provide an overview of the recent development of gas sensors based on various 2D atomic crystals from both the experimental and theoretical investigations.We will particularly focus on the sensing mechanisms and working principles of the related sensors,as well as approaches to enhance their sensing performances.Finally,we summarize the whole article and provide future perspectives for the development of gas sensors with 2D materials.Jiacheng Cao Qian Chen Xiaoshan Wang Qiang Zhang Hai-Dong Yu Xiao Huang Wei Huang 2021Research2021,,1:2
6Highly efficient Hg2+ removal via a competitive strategy using a Co-based metal organic framework ZIF-67显示文摘The stronger coordination ability of mercury ions with organic ligands than the metal ions in metal organic framework(MOFs) provides an accessible way to separate mercury ions from solution using specific MOFs. In this study, a Co-based MOF(ZIF-67, Co(mIM)) was synthesized. It did not introduce specific functional groups, such as-SH and-NH, into its structure through complicated steps. It separate Hgfrom wastewater with a new strategy, which utilized the stronger coordination ability of Hgwith the nitrogen atom on the imidazole ring of the organic ligand than the Coions. Hgreplaced Conodes from ZIF-67 and formed a more stable precipitate with m IM. The experimental results showed that this new strategy was efficient. ZIF-67 exhibited Hgadsorption capacity of 1740 mg/g, much higher than the known MOFs sorbents. m IMs is the reaction center and ZIF-67 can improve its utilization. The sample color faded from purple to white due to the loss of cobalt ion. It is a great feature of ZIF-67 that allows users to judge whether the sorbent is deactivated intuitively. ZIF-67 can be sustainable recycled by adding organic ligands to the solution after treatment due to its simple synthesis method at room temperature. It’s a high-efficient and sustainable sorbent for Hgseparation from wastewater.Jiacheng Zhou Hao Zhang Tianying Xie Ye Liu Qicheng Shen Jie Yang Limei Cao Ji Yang 2022Journal of Environmental Sciences2022,34,9:1
7Model of Surface Texture for Honed Gear Considering Motion Path and Geometrical Shape of Abrasive Particle显示文摘Gear power-honing is mainly applied to finish small and medium-sized automotive gears,especially in new energy vehicles.The distinctive curved surface texture greatly improves the noise emission and service life of honed gears.The surface texture for honed gear considering the motion path and geometrical shape of abrasive particles has not been investigated.In this paper,the kinematics of the gear honing process is analyzed,and the machining marks produced by the abrasive particles of honing wheel scratching abrasive particles against the workpiece gear are calculated.The tooth surface roughness is modeled considering abrasive particle shapes and material plastic pile-ups.This results in a mathematical model that characterizes the structure of the tooth surface and the orientation of the machining marks.Experiments were used to verify the model,with a maximum relative error of less than 10%when abrasive particles are spherical.Based on this model,the effects of process parameters on the speeds of discrete points on the tooth flank,orientations of machining marks and roughness are discussed.The results show that the shaft angle between the workpiece gear and the honing wheel and the speed of the honing wheel is the main process parameters affecting the surface texture.This research proposes a surface texture model for honed gear,which can provide a theoretical basis for optimizing process parameters for gear power-honing.Yuhu Liu Xiaohui Huang Huajun Cao Jiacheng Wang Huapan Xiao 2023Chinese Journal of Mechanical Engineering2023,36,4:0
8Optimum Application Time and Application Rate of Nitrogen Fertilizer in Brassica napus L.显示文摘To find proper nitrogen fertilizer application mode of rapeseed( Brassica napus L.),promote the high and stable yield of rapeseed,field experiment was carried out to study the effect of nitrogen fertilizer application modes on the yield and economic traits of Fengyou 10 rapeseed planted in two different fertility soils,and characteristics and differences of responses of different fertility soils to nitrogen fertilizer application modes were compared and analyzed. The results showed that the yield and related economic traits of rapeseed treated by nitrogen fertilizer were higher than the control group; in the nitrogen fertilizer treatment group,when the nitrogen fertilizer was applied as the base fertilizer and wintering fertilizer at the ratio of 7∶ 3,the rapeseed yield was higher than the control group and reached the highest; when the nitrogen fertilizer was applied as the base fertilizer,wintering fertilizer,and bud fertilizer at the ratio of 5∶ 3∶ 2,the rapeseed yield was significantly higher than the control group but was the lowest. These indicate that sufficient nitrogen supply is the basis for normal growth and development of rape seedlings. When the pure nitrogen fertilizer was at 192 kg/ha and the ratio of base fertilizer and wintering fertilizer was 7∶ 3,it can better coordinate the high yield of rapeseed and overall use of nitrogen fertilizer,and obtain higher rapeseed yield.Junping HE Shufen ZHANG Jiacheng ZHU Jinhua CAO Yancheng WEN Dongfang CAI Lei ZHAO Dongguo WANG Jianping WANG 2018Asian Agricultural Research2018,10,5:0
9iNet:visual analysis of irregular transition in multivariate dynamic networks显示文摘Multivariate dynamic networks indicate networks whose topology structure and vertex attributes are evolving along time.They are common in multimedia applications.Anomaly detection is one of the essential tasks in analyzing these networks though it is not well addressed.In this paper,we combine a rare category detection method and visualization techniques to help users to identify and analyze anomalies in multivariate dynamic networks.We conclude features of rare categories and two types of anomalies of rare categories.Then we present a novel rare category detection method,called DIRAD,to detect rare category candidates with anomalies.We develop a prototype system called iNet,which integrates two major visualization components,including a glyph-based rare category identifier,which helps users to identify rare categories among detected substructures,a major view,which assists users to analyze and interpret the anomalies of rare categories in network topology and vertex attributes.Evaluations,including an algorithm performance evaluation,a case study,and a user study,are conducted to test the effectiveness of proposed methods.Dongming HAN Jiacheng PAN Rusheng PAN Dawei ZHOU Nan CAO Jingrui HE Mingliang XU Wei CHEN 2022Frontiers of Computer Science2022,16,2:0
10Pattern changes and early risk warning of Spartina alterniflora invasion:a study of mangrove-dominated wetlands in northeastern Fujian,China显示文摘The exotic saltmarsh cordgrass,Spartina alterniflora(Loisel)Peterson&Saarela,is one of the important causes for the extensive destruction of mangroves in China due to its invasive nature.The species has rapidly spread wildly across coastal wetlands,challenging resource managers for control of its further spread.An investigation of S.alterniflora invasion and associated ecological risk is urgent in China's coastal wetlands.In this study,an ecological risk invasive index system was developed based on the Driving Force-Pressure-State-Impact-Response framework.Predictions were made of'warning degrees':zero warning and light,moderate,strong,and extreme warning,by developing a back propagation(BP)artificial neural network model for coastal wetlands in eastern Fujian Province.Our results suggest that S.alterniflora mainly has invaded Kandelia candel beaches and farmlands with clustered distributions.An early warning indicator system assessed the ecological risk of the invasion and showed a ladder-like distribution from high to low extending from the urban area in the central inland region with changes spread to adjacent areas.Areas of light warning and extreme warning accounted for43%and 7%,respectively,suggesting the BP neural network model is reliable prediction of the ecological risk of S.alterniflora invasion.The model predicts that distribution pattern of this invasive species will change little in the next 10 years.However,the invaded patches will become relatively more concentrated without warning predicted.We suggest that human factors such as land use activities may partially determine changes in warning degree.Our results emphasize that an early warning system for S.alterniflora invasion in China's eastern coastal wetlands is significant,and comprehensive control measures are needed,particularly for K.candel beach.Fangyi Wang Jiacheng Zhang Yan Cao Ren Wang Giri Kattel Dongjin He Weibin You 2023Journal of Forestry Research2023,34,5:0
11Expeditious and scalable preparation of a Li-Thiele reagent for amine-based bioconjugation显示文摘Chemoselective amine bioco njugation has long been a challenge for native protein modification.Inspired by Thiele’s seminal discovery,Li and co-workers recently developed an orto-phthalaldehyde(OPA)based reagent for labeling the amino group of a protein.Here we report an expeditious and scalable synthesis of a Li-Thiele reagent featuring an arene construction strategy.The reagent contains an alkyne side chain as a handle for secondary modification.Jiacheng Li Yuyong Ma Xiang Zhang Xin Cao Hegui Gong Ang Li 2021Chinese Chemical Letters2021,32,2:0
12Gradient defects mediate negative thermal quenching in phosphors显示文摘Luminescent materials often suffer from thermal quenching(TQ),limiting the continuation of their applications under high temperatures up to 473 K.The formation of defect levels could suppress TQ,but rational synthesis and deep understanding of multiple defects-regulated luminescent materials working in such a wide temperature range still remain challenging.Here,we prepare a negative thermal quenching(NTQ)phosphor LiTaO_(3)∶Tb^(3+)by introducing gradient defects V_(Ta)^(5−),Tb_(Li)^(2+),and(V_(Ta)Tb_(Li))^(3−)as identified by advanced experimental and theoretical studies.Its photoluminescence significantly becomes intense with rising temperatures and then slowly increases at 373 to 473 K.The mechanism studies reveal that gradient defects with varied trapping depths could act as energy buffer layers to effectively capture the carriers.Under thermal disturbance,the stored carriers could successively migrate to the activators in consecutive and wide temperature zones,compensating for TQ to enhance luminescence emission.This study initiates the synthesis of multi-defect NTQ phosphors for temperature-dependent applications.Mingxue Deng Xingzhong Cao Yangmin Tang Zhenzhen Zhou Lijia Liu Xiaofeng Liu Peng Zhang Lo-Yueh Chang Hao Ruan Xinjun Guo Jiacheng Wang Qian Liu 2023Advanced Photonics2023,5,2:0
13Development of LnMnO_(3+σ) perovskite on low temperature Hg0 removal显示文摘LnMnO_(3+σ)(Ln=La,Pr,Nd,Sm,Eu,Gd or Dy)perovskites synthesized by sol-gel method were employed for gaseous elemental mercury(Hg^(0))removal from coal-fired flue gas.Characterization results revealed the structure of the perovskites presented a phase transition process from rhombohedral system to O-and O'-orthorhombic structure with the change of A-site rare earth elements.The perovskites showed satisfactory Hg^(0) removal capacity in a narrow temperature range of 100-150℃.NdMnO_(3+σ) with an O-O'orthorhombic structure presented the best Hg^(0) removal performance,which markedly depends on four factors:crystal structure,oxygen vacancy density,Mn^(4+)/Mn^(3+) ratio and surface element segregation.The Hg^(0) removal mechanism was illustrated based on the mercury temperature programmed desorption experiment and X-ray photoelectron spectroscopy characterization.Both chemisorption and catalytic oxidation played a role in the Hg^(0) removal process.Chemisorption dominated the Hg^(0) removal,due to the slow catalytic oxidation rate at low temperature.This work preliminarily established the relation between the structure of rare earth manganese perovskite and Hg^(0) removal performance.Qicheng Shen Jiacheng Zhou Chenglong Ma Jie Yang Limei Cao Ji Yang 2022Journal of Environmental Sciences2022,34,3:0
14An Optical Waveguiding Organic Crystal with Phase-Dependent Elasticity and Thermoplasticity over Wide Temperature Ranges显示文摘Elastic or plastic bendable organic crystals have attracted increasing attention in the field of crystal engineering.For the application of flexible materials,the applicable temperature range can not be ignored.However,studies on the flexible organic crystals reported so far have not involved the effect of temperature on the mechanical properties of these materials.Here,organic crystals of 9,10-bis(phenylethynyl)anthracene with phase-dependent mechanical properties over wide temperature ranges are reported.Jiacheng Cao Huapeng Liu Hongyu Zhang 2021CCS Chemistry2021,3,10:0
15Distribution Characteristics of Transmitted Diffuse Solar Radiation on the Indoor Surface显示文摘The transparent envelope structure has huge energy-saving potential, which is the key point to reduce building energy consumption and improve the thermal building environment. The solar radiation transmitted through the transparent envelope structure(transmitted solar radiation) is reflected, scattered and absorbed by the indoor surface, which has a significant impact on the heat gain of the building. In this paper, firstly, the diffuse radiation received by different depths of various indoor surfaces is measured by experimental tests, and the distribution function of transmitted diffuse solar radiation(TDSR) on the indoor surface is established. Secondly, the diffuse solar radiation received by the indoor and outdoor surfaces in different seasons is continuously monitored;the variation of TDSR with time is analyzed, and the distribution function of TDSR on indoor surface with time is proposed. Finally, based on the temporal and spatial distribution characteristics of diffuse radiation under different weather conditions, the variation of TDSR with the weather is studied, and the distribution function of TDSR on the indoor surface with weather changes is established. The distribution function of the TDSR on the indoor surface under different depths, time and weather conditions obtained in this study can supplement and improve the theory of building heat gain and load, and help accurate simulation of building energy consumption.YAO Wanxiang TIAN Wanfeng SHANG Jiacheng HE Haiyan DONG Jiajun CAO Weixue 2022Journal of Thermal Science2022,31,6:0
16Variation characteristics of fine particulate matter and its components in diesel vehicle emission plumes显示文摘A rapid reaction occurs near the exhaust nozzle when vehicle emissions contact the air.Twenty diesel vehicles were studied using a new multipoint sampling system that is suitable for studying the exhaust plume near the exhaust nozzle.The variation characteristics of fine particle matter(PM_(2.5)) and its components in diesel vehicle exhaust plumes were analyzed.The PM_(2.5) emissions gradually increased with increasing distance from the nozzle in the plume.Elemental carbon emissions remained basically unchanged, organic carbon and total carbon(TC) increased with increasing distance.The concentrations of SO_(4)^(2-),NO_(3)^(-) and NH_(4)^(+) (SNA) directly emitted by the vehicles were very low but increased rapidly in the exhaust plume.The selective catalytic reduction(SCR) reduced 42.7% TC, 40% NO_(3)^(-) emissions, but increased 104% SO_(4)^(2-) and 36% NH_(4)^(+) emissions, respectively.In summary,the SCR reduced 29% primary PM_(2.5) emissions for the tested diesel vehicles.The NH_(4)NO_(3) particle formation maybe more important in the plume, and there maybe other forms of formation of NH_(4)^(+) (eg.NH4Cl).The generation of secondary organic carbon(SOC) plays a leading role in the generation of secondary PM_(2.5).The SCR enhanced the formation of SOC and SNA in the plume, but comprehensive analysis shows that the SCR more enhanced the SNA formation in the plume, which is mainly new particles formation process.The inconsistency between secondary organic aerosol(SOA) and primary organic aerosol definitions is one of the important reasons for the difference between SOA simulation and observation.Xianbao Shen Jiateng Hao Lei Kong Yue Shi Xinyue Cao Jiacheng Shi Zhiliang Yao Xin Li Bobo Wu Yiming Xu Kebin He 2021Journal of Environmental Sciences2021,33,9:0
17Preliminary investigation and detection based on loop-mediated isothermal amplification(LAMP)of phytoplasmas associated with diseases in B.napus L.显示文摘In the last decade,some disease occurred on our experimental farms that had caused serious losses.They were not caused by fungi,bacteria or viruses.By loop-mediated isothermal amplification(LAMP)technique,the detection results pointed to the possible pathogen as phytoplasma.The investigation results implied that phytoplasmas could cause more than 13 kinds of symptoms in almost all parts of plants in B.napus L.,including witches’broom,multi-stems,aggregate main inflorescences,and flat stems.The incidences of these phytoplasma-associated diseases in our experimental farms rose from 1.61%in 2010 to 6.00%in 2021.Some phytoplasma infected plants died without any growing points.These studies would be helpful for detecting phytoplasmas diseases,selecting disease resistant germplasm and improving varieties with disease resistances in B.napus L.Yancheng Wen Shufen Zhang Junping He Dongfang Cai Jiacheng Zhu Jianping Wang Jinhua Cao Kun Hu Lei Zhao Dongguo Wang Yizi Liu 2022Oil Crop Science2022,7,4:0
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