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| 1 | Study of a Horizontal Shear Line over the Qinghai–Tibetan Plateau and the Impact of Diabatic Heating on Its Evolution显示文摘Based on the 4 times daily 0.75°× 0.75° ERA-Interim data, the structural evolution of a Qinghai–Tibetan Plateau horizontal(east–west-oriented) shear line(TSL) during 15–19 August 2015 and the effect of diabatic heating on its evolution were analyzed. The results show that the TSL possessed a vertical thickness of up to 1.5 km(approximately 600–450 h Pa), and was baroclinic in nature. Weak ascending motions occurred near the TSL, accompanied with more significant gradients in dew point temperature than in temperature. The TSL was characterized by diurnal variations in its appearance and structure. It was relatively full in shape(broken) and was the lowest(highest) in vertical extent at 0000(1800) UTC, and veered clockwise(anticlockwise) during 0000–0600(1200–1800) UTC. When the north–south span of the TSL increased, it was prone to fracturing; and it disappeared when the dew point temperature gradients to its either side decreased. When the TSL moved northward(southward), its western(eastern) section broke up, while the eastern(western) section inclined to regenerate or merge. The TSL tended to move towards the positive vorticity areas with significant increases in vorticity. When the positive vorticity center moved down, the height of TSL decreased. Further analysis shows that the plateau surface heating dominated the vorticity attribute of the TSL and its movement, with different contributions from local variation, horizontal advection, and vertical advection of the diabatic heating to the TSL at different heights. | Qin GUAN Xiuping YAO Qingping LI Yuancang MA Honghua ZHANG | 2018 | Journal of Meteorological Research2018,32,4: | 7 |
| 2 | Transcriptomic analyses identify albino-associated genes of a novel albino tea germplasm ‘Huabai 1’显示文摘Albinism in shoots of tea plants is a common phenotypic expression which gives the tea infusion a pleasant umami taste.A novel natural albino mutant tea germplasm containing high amino acids content was found and named as‘Huabai 1’.‘Huabai 1’has white jade tender shoots under low temperature and turns green with increased temperature.In order to understand the molecular mechanism of color change in leaf of‘Huabai 1’,transcriptome analysis was performed to identify albino-associated differentially expressed genes(DEGs).A total of 483 DEGs were identified from white shoots of‘Huabai 1’compared to its green shoots.There were 15 DEGs identified to be involved in phenylpropanoid biosynthesis,which account for the majority of characterized DEGs.The metabolites related to phenylpropanoid biosynthesis revealed similar expression pattern of DEGs.Furthermore,metabolic pathways such as ubiquonone,tyrosine,and flavonoid biosynthesis associated with phenylpropanoid biosynthesis could also contribute to the color change in‘Huabai 1’tender shoots.Protein–protein interaction analysis revealed a hub protein NEDD8(CSA009575)which interacted with many regulated genes in spliceosome,nitrogen metabolism,phenylpropanoid biosynthesis,and other pathways.In conclusion,the findings in this study indicate that the color change of‘Huabai 1’tender shoots is a combined effect of phenylpropanoid biosynthesis pathway and other metabolic pathways including flavonoid biosynthesis in tea plants.Chlorophyll biosynthesis-related genes LHCII and SGR may also play some roles in color change of‘Huabai 1’. | Qingping Ma Huan Li Zhongwei Zou Emmanuel Arkorful Qianru Lv Qiongqiong Zhou Xuan Chen Kang Sun Xinghui Li | 2018 | Horticulture Research2018,5,1: | 7 |
| 3 | The Response of Vegetation Biomass to Soil Properties along Degradation Gradients of Alpine Meadow at Zoige Plateau显示文摘Alpine grassland of the Tibetan Plateau has undergone severe degradation, even desertification. However, several questions remain to be answered, especially the response mechanisms of vegetation biomass to soil properties. In this study, an experiment on degradation gradients was conducted in an alpine meadow at the Zoige Plateau in 2017. Both vegetation characteristics and soil properties were observed during the peak season of plant growth. The classification and regression tree model(CART) and structural equation modelling(SEM) were applied to screen the main factors that govern the vegetation dynamics and explore the interaction of these screened factors. Both aboveground biomass(AGB) and belowground biomass(BGB) experienced a remarkable decrease along the degradation gradients. All soil properties experienced significant variations along the degradation gradients at the 0.05 significance level. Soil physical and chemical properties explained 54.78% of the variation in vegetation biomass along the degradation gradients. AGB was mainly influenced by soil water content(SWC), soil bulk density(SBD), soil organic carbon(SOC), soil total nitrogen(STN), and pH. Soil available nitrogen(SAN), SOC and p H, had significant influence on BGB. Most soil properties had positive effects on AGB and BGB, while SBD and p H had a slightly negative effect on AGB and BGB. The correlations of SWC with AGB and BGB were relatively less significant than those of other soil properties. Our results highlighted that the soil properties played important roles in regulating vegetation dynamics along the degradation gradients and that SWC is not the main factor limiting plant growth in the humid Zoige region. Our results can provide guidance for the restoration and improvement of degraded alpine grasslands on the Tibetan Plateau. | LIU Miao ZHANG Zhenchao SUN Jian XU Ming MA Baibing TIJJANI Sadiy Baba CHEN You-jun ZHOU Qingping | 2020 | Chinese Geographical Science2020,30,3: | 3 |
| 4 | Integrated Wide Area Protection and Control for Power Grid Security显示文摘The traditional“three defense lines”for power systems are based on local information and static protection&control strategy,which are not suitable to modern large-scale power systems.In order to improve the security of UHV hybrid power grids,the Integrated Wide Area Protection&Control(IWAPC)is proposed in this paper by applying the new technologies of synchronized high-speed communication,which integrates“three defense lines”and promotes existing wide area protection only for security control.The IWAPC is the hierarchical protection and control system which provides the protection and control for wide area power networks to improve their reliability and security.It is divided into three levels,the local bay level,the substation integrated protection level and the wide area protection level.The wide area real-time protection and control information platform is the most important part of the IWAPC,which is based on a synchronized wide area communication network.The key technologies and new development trends include network topology analysis,wide area backup protection,wide area intelligent reclosing,wide area load shedding,wide area auto-switching,overload cutoff and transfer,transmission section protection,intelligent system splitting and dynamic stability control.It cannot only integrate three lines of defense for power system protection and control,but also improve security of the power grid. | Qingping Wang Zhiqian Bo Yingke Zhao Xiaowei Ma Ming Zhang Hao Zheng Lin Wang | 2019 | CSEE Journal of Power and Energy Systems2019,5,2: | 2 |
| 5 | Theory of passive localization for underwater sources based on acoustic ray modeling显示文摘The theory of passive localization for underwater sources based on acoustic ray channel modeling is discussed. The principles of channel modeling in Ray-theory, determination of eigenrays which connect source and receiver, analysis of DOA arriving structure and time delay spectrum arriving structure, their relationship to source location are given in the paper. Source location is estimated by matching measured DOA and TDS to their calculated counterparts. The method of Ray-theory based passive localization features its simplicity, less calculation, short array aperture and robust performance to environment parameters, as compared with those methods based on Normal Mode theory. | SUN Zhenge (National Laboratory of Acoustics Beijing 100080)MA Yuanliang TU Qingping and JIANG Xiaoquan(College of Marine Engineering, NPU Xi’an 710072) | 1997 | Chinese Journal of Acoustics1997,16,3: | 2 |
| 6 | Application of Nano-Delivery Systems in Lymph Nodes for Tumor Immunotherapy显示文摘Immunotherapy has become a promising research“hotspot”in cancer treatment.“Soldier”immune cells are not uniform throughout the body;they accumulate mostly in the immune organs such as the spleen and lymph nodes(LNs),etc.The unique structure of LNs provides the microenvironment suitable for the survival,activation,and proliferation of multiple types of immune cells.LNs play an important role in both the initiation of adaptive immunity and the generation of durable anti-tumor responses.Antigens taken up by antigen-presenting cells in peripheral tissues need to migrate with lymphatic fluid to LNs to activate the lymphocytes therein.Meanwhile,the accumulation and retaining of many immune functional compounds in LNs enhance their efficacy significantly.Therefore,LNs have become a key target for tumor immunotherapy.Unfortunately,the nonspecific distribution of the immune drugs in vivo greatly limits the activation and proliferation of immune cells,which leads to unsatisfactory anti-tumor effects.The efficient nano-delivery system to LNs is an effective strategy to maximize the efficacy of immune drugs.Nano-delivery systems have shown beneficial in improving biodistribution and enhancing accumulation in lymphoid tissues,exhibiting powerful and promising prospects for achieving effective delivery to LNs.Herein,the physiological structure and the delivery barriers of LNs were summarized and the factors affecting LNs accumulation were discussed thoroughly.Moreover,developments in nano-delivery systems were reviewed and the transformation prospects of LNs targeting nanocarriers were summarized and discussed. | Yiming Xia Shunli Fu Qingping Ma Yongjun Liu Na Zhang | 2023 | Nano-Micro Letters2023,15,9: | 1 |
| 7 | Integrated protection based on multifrequency domain information for UHV half-wavelength AC transmission line显示文摘Half-wavelength AC Transmission(HWACT)can improve capability of AC transmission significantly.According to the basic principle of HWACT,the electromagnetic transient model of HWACT is built to analyze the fault transient process of transmission line.Based on fault characteristics of HWACT,the adaptability of traditional protections for transmission lines is analyzed briefly,such as current differential protection,distance protection and over current protection.In order to solve the problems of conventional protection caused by HWACT,a novel integrated protection based on multi-frequency domain information is proposed in this paper,which uses both the power frequency information and transient information.The integrated protection based on multi-frequency domain information takes advantages of power frequency and transient protections,which can not only improve the performance of traditional protection of AC transmission line but also realize fast fault judgment by transient travelling wave protection. | Qingping Wang Zhiqian Bo Xiaowei Ma Ming Zhang Yingke Zhao Yi Zhu Lin Wang | 2016 | Protection and Control of Modern Power Systems2016,1,1: | 1 |
| 8 | 7-Ketocholesteryl-9-carboxynonanoate enhances ATP binding cassette transporter A1 expression mediated by PPARγ in THP-1 macrophages显示文摘 | Yan Chi Le Wang Yuanyuan Liu Yanhua Ma Renjun Wang Xiaofei Han Hui Qiao Jiabin Lin Eiji Matsuura Shuqian Liu Qingping Liu | 2014 | Atherosclerosis2014,,: | 1 |
| 9 | c-Ab1以控制蛋白酶体亚基PSMA7通过泛素蛋白酶体降解调节蛋白酶体丰度显示文摘细胞出版社《细胞报告》是2012年推出的开放获取期刊,本刊致力于报道整个生命科学领域的高质量研究成果。与细胞出版社所有其他期刊一样,《细胞报告》审稿标准也是新的生物观点。杂志内部的专业编辑与作者、审稿人、科学编辑委员会保持密切的联系。该杂志2015年公布的影响因子为8.358。 | Dapei Li Qincai Dong Qingping Tao Jing Gu Yan Cui Xuefeng Jiang Jing Yuan Weihua Li Rao Xu Yanwen Jin Ping Li David T.Weaver Qingjun Ma 刘萱 曹诚 | 2016 | 科学新闻2016,0,1: | 0 |
| 10 | Meta-Analysis of Flowering-Related Traits and Mining of Candidate Genes in Maize显示文摘Maize flowering is an important agronomic character,which is controlled by quantitative trait loci(QTL).Over the years,a large number of flowering-related QTL have been found in maize and exist in public databases.However,combining these data,re-analyzing and mining candidate loci and fine mapping of flowering-related traits to reduce confidence intervals has become a hot issue in maize.In this study,the QTL of 6 important agronomic traits of maize flowering were collected from 15 published articles,including flowering period(DA),Days to tasseling(DTT),Days to silking(DS),Days to pollen shedding(DTP),anthesis-silking interval(ASI)and the photosensitive(PS).Through meta-analysis,622 QTL were integrated into 26 meta-QTLs(MQTL).Finally,the candidate genes related to maize flowering(Gene IDs:ZM00001D005791,ZM00001D019045,ZM00001D050697,ZM00001D011139)were identified by Gene Ontology(GO)enrichment and hierarchical cluster analysis of expression profile.Based on the results of this study,the genetic characteristics of maize flowering traits will be further analyzed,which is of great significance to guide the improvement of important agronomic characters and improve the efficiency of breeding. | Jianyu Lu Qingping Jiang Tongyu Liu Yangyang Zhou Mengtong Liu Jing Qu Yiyong Ma Shuyan Guan | 2022 | Phyton-International Journal of Experimental Botany2022,91,6: | 0 |
| 11 | Novel Ag-bridged dual Z-scheme g-C_(3)N_(4)/BiOI/AgI plasmonic heterojunction: Exceptional photocatalytic activity towards tetracycline and the mechanism insight显示文摘Rational design and synthesis of highly efficient and robust photocatalysts with positive exciton splitting and interfacial charge transfer for environmental applications is critical.Herein,aiming at overcoming the common shortcomings of traditional photocatalysts such as weak photoresponsivity,rapid combination of photo-generated carriers and unstable structure,a novel Ag-bridged dual Z-scheme g-C_(3)N_(4)/BiOI/AgI plasmonic heterojunction was successfully synthesized using a facile method.Results showed that Ag-AgI nanoparticles and three-dimensional(3D)BiOI microspheres were decorated highly uniformly on the 3D porous g-C_(3)N_(4) nanosheet,resulting in a higher specific surface area and abundant active sites.The optimized 3D porous dual Z-scheme g-C_(3)N_(4)/BiOI/Ag-AgI manifested exceptional photocatalytic degradation efficiency of tetracycline(TC)in water with approximately 91.8%degradation efficiency within 165 min,outperforming majority of the reported g-C_(3)N_(4)-based photocatalysts.Moreover,g-C_(3)N_(4)/BiOI/Ag-AgI exhibited good stability in terms of activity and structure.In-depth radical scavenging and electron paramagnetic resonance(EPR)analyses confirmed the relative contributions of various scavengers.Mechanism analysis indicated that the improved photocatalytic performance and stability were ascribed to the highly ordered 3D porous framework,fast electron transfer of dual Z-scheme heterojunction,desirable photocatalytic performance of BiOI/AgI and synergistic effect of Ag plasmas.Therefore,the 3D porous Z-scheme g-C_(3)N_(4)/BiOI/Ag-AgI heterojunction had a good prospect for applications in water remediation.The current work provides new insight and useful guidance for designing novel structural photocatalysts for environment-related applications. | Wenxia Wang Zhen Li Kailin Wu Guodong Dai Qingping Chen Lihua Zhou Junxia Zheng Liang Ma Guiying Li Wanjun Wang Taicheng An | 2023 | Journal of Environmental Sciences2023,,9: | 0 |
| 12 | Micro/nanomotor: A promising drug delivery system for cancer therapy显示文摘Micro/nanomotors(MNMs)are small-scale devices that can effectively convert various forms of energy into mechanical motion.Their controllable motility and good permeability have attracted the interest of researchers as promising drug carriers in cancer therapy.Compared with traditional formulations,micro/nanomotor drug delivery systems can greatly improve therapeutic efficiency and reduce the side effects of antitumor drugs.This review mainly discusses the advantages of micro/nanomotor drug delivery systems and the applications of MNMs propelled by exogenous,endogenous,and biohybrid power in cancer therapy.Finally,the main challenges of the applications of micro/nanomotor drug delivery systems,as well as future development trends and opportunities are discussed. | Weihan Zhang Zipeng Zhang Shunli Fu Qingping Ma Yongjun Liu Na Zhang | 2023 | ChemPhysMater2023,2,2: | 0 |
| 13 | Slope Instability Analysis of the Qiongdongnan Basin in the Northern Part of the South China Sea:Implications for the Risk Evaluation of Deepwater Drilling显示文摘The instability of continental slopes damages marine engineering equipment,such as submarine pipelines,resulting in the generation of tsunamis,which endangers the safety of nearshore personnel.Therefore,research on the instability of continental slopes where submarine landslides usually occur is crucial to the risk evaluation of deepwater drilling.Previous studies were mainly based on simplified 2D and 3D models,which extend the 2D model applied on submarine slopes with complex topography.In this study,a numerical model with bathymetric data from the Qiongdongnan Basin was established.Furthermore,3D slope stability analysis and static and dynamic analyses were conducted.The static analysis found two discussions where slopes are most likely to occur.Through the analysis of different seismic forces,the dynamic result showed that an instability area is added to the two positions where the static analysis is unstable.Topography scatters and transmits seismic waves and controls the accumulation and diffusion of seismic energy.3D calculations and analysis revealed that the direction of slope instability is closely related to terrain inclination,slope,terrain effect,and terrain curvature.Data showed that instability situations could not be derived from a single direction or profile data.Such situations are an important factor in slope stability analysis and are critical to the prediction and evaluation of marine geological disasters. | MA Linwei WU Shiguo LIU Yanrui SUN Jin OUYANG Min LI Qingping QIN Yongpeng WANG Dawei | 2023 | Journal of Ocean University of China2023,22,2: | 0 |
| 14 | Study of the Relationship between Precipitation and a Transverse Shear Line over the Qinghai-Tibet Plateau in Summer显示文摘Based on the 4 times daily 0.75°×0.75°ERA-Interim data,the relationship between precipitation and a transverse shear line(TSL)over Qinghai-Tibet Plateau during August 15-19,2015 is analyzed.The results show that precipitation and TSL had obvious diurnal variation.That is,the intensity of the TSL and the precipitation tended to increase from afternoon to night and reduce from 00:00 to 06:00 UTC(the same below).The shape of the rain area was basically consistent with the direction of the TSL,and when the zonal characteristics of the rain area were obvious,the precipitation distribution was relatively uniform,otherwise the local short-term heavy precipitation was easy to occur.The precipitation center was basically consistent with the positive vorticity center near the TSL,and precipitation was directly proportional to the value of positive vorticity.The equation for the budget of vorticity shows that the horizontal advection term determined the moving direction of the TSL.The vertical transportation term determined the structural characteristics of the TSL on the vertical section,and positive vertical transport item of lower level was conducive to the formation of the plateau vortex.The horizontal convergence or divergence term determined the position of the TSL,and was conducive to the maintenance of the TSL.The evolution of apparent heat source and apparent water vapor sink near the TSL had a distinct diurnal feature.Meanwhile,atmospheric heating in the precipitation process was closely related to atmospheric upward movement,and the latent heat of condensation release caused by precipitation was beneficial to the maintenance of the plateau shear line and the formation and strengthening of plateau vortex.The precipitation of the TSL was mainly dominated by weak convective precipitation. | Qin GUAN Qingping LI Xiuping YAO Liang XU Yuanchang MA Delan QI | 2020 | Meteorological and Environmental Research2020,11,2: | 0 |