维普中文期刊产品整合服务
14篇 您的检索式:作者名="Yu Chengpeng"
    题名 作者 年代 出处 被引量
1Interaction between Downslope and Alongslope Processes on the Margins of Daihai Lake,North China:Implication for Deltaic Sedimentation Models of Lacustrine Rift Basin显示文摘代海·莱克,现代湖的裂缝盆,在内部蒙古定位了,诺思中国,为在活跃裂缝设置理解三角形的 depositional 进程用作重要现代类似物。代海·莱克的边缘上的二个三角洲(Yuanzigou 三角洲和 Bulianghe 三角洲) 被调查比较并且形成对照用天线相片,领域 trenching 和沉积采样叠模式。从代海·莱克的边缘收集的浅核心和沟数据显示自从形成的代海·莱克,许多 depositional 进程是活跃的。采用 chronostratigraphic 关联技术的二个 3-D 沉积模型被产生。chronostratigraphic 沉积模型预言并且代表体系结构和沉积的沙身体连续性。宽广 sheeted 飘移和隧道侵蚀的地层学的巧合建议 a coupling 在之间下坡并且 alongslope 过程。支流嘴酒吧由于下坡的流动的优势在更陡峭的斜坡上的三角洲的前面是流行的。相反,沿着斜坡水流在轻轻的 depositional 斜坡上与 sheeted sandbodies 赞成远侧的酒吧存款的发展。这研究提供卓见进与加亮下坡的流动和 alongslope 水流之间的关键差别联系的复杂沉积外形的建筑学。在这些三角洲以内的沙的分发具有特别兴趣,用在理解在湖的裂缝盆形成的烃水库的建筑学的应用。YU Xinghe LI Shunli CHEN Bintao TAN Chengpeng XIE Jing HU Xiaonong 2012Acta Geologica Sinica(English Edition)2012,86,4:12
2The response of deltaic systems to climatic and hydrological changes in Daihai Lake rift basin,Inner Mongolia,northern China显示文摘Delta systems are ubiquitous around lacustrine rift basins. Its peripheral ge-ometry, progradation structures and sedimentary successions were controlled by both tec-tonic settings and climatic changes. Peripheral geometry of a delta was strongly influenced by depositional gradients which formed the fan-shape delta on the steep slopes and developed the lobe-shape delta on the gentle slopes. Due to the discharge feed rivers can change rapidly driven by climatic variations, and the nearshore area of deltas display considerable facies variability. The rise of annual rainfall, which suggests the rivers feeding deltas are continuous, and result in distributary mouth bars that are prevalent in the front of deltas since the down-slope flows are greater than the along-slope currents. On the contrary, when the annual rainfall decreases and evaporation increases, the rivers only can feed deltas ephemerally. If the along-slope currents were in a dominant position, the distal bars were deposited. Progra-dation structure and sedimentary successions of deltas were controlled by the gradients of slopes. On gentle depositional slopes, shingle foreset beds predominate with fine sediments and small-scale sedimentary structures or vice versa.Yu Xinghe Li Shunli Tan Chengpeng Xie Jing Chen Bintao Yang Fan 2013Journal of Palaeogeography2013,2,1:6
3Correlation analysis between the chemical contents and bioactivity for the quality control of Alismatis Rhizoma显示文摘In order to clarify regions of production and to discriminate processing methods, quantitative and qualitative analyses for saccharides and terpenes in 35 batches of Alismatis Rhizoma were performed.Methodologies included HPLC–PDA, HPLC–VWD and UHPLC–MSn, combined with principal component analysis(PCA) and partial least squares regression techniques(PLSR). The inhibitory effects of triterpenes and Alismatis Rhizoma extracts on lipase activity were evaluated in vitro. PLSR analysis revealed significant positive correlations(R2= 0.5795) between the contents of triterpenes 10, 14, 15, 18 and 22 and the inhibitory effects of Alismatis Rhizoma. The present study establishes an effective method for simultaneous determination of multiple components, and identifies key bioactive triterpenes. These results can be used for systematic and novel analytical strategies for the quality control of Alismatis Rhizoma production.Xiaoxv Gao Chengpeng Sun Zhenglong Yu Jian Cang Xiangge Tian Xiaokui Huo Lei Feng Xinguang Liu Chao Wang Baojing Zhang Xiaochi Ma 2018Acta Pharmaceutica Sinica B2018,8,2:4
4Methodology for credibility assessment of historical global LUCC datasets显示文摘Land use-induced land cover change(LUCC)is an important anthropogenic driving force of global change that has influenced,and is still influencing,many aspects of regional and global environments.Accurate historical global land use/cover datasets are essential for a better understanding of the impacts of LUCC on global change.However,there are not only evident inconsistencies in current historical global land use/cover datasets,but inaccuracies in the data in these global dataset revealed by historical record-based reconstructed regional data throughout the world.A focus in historical LUCC and global change research relates to how the accuracy of historical global land cover datasets can be improved.A methodology for assessing the credibility of existing historical global land cover datasets that addresses temporal as well as spatial changes in the amount and distribution of land cover is therefore needed.Theoretically,the credibility of a global land cover dataset could be assessed by comparing similarities or differences in the data according to actual land cover data(the'true value').However,it is extremely difficult to obtain historical evidence for assessing the credibility of historical global land cover datasets,which cannot be verified through field sampling like contemporary global land cover datasets.We proposed a methodological framework for assessing the credibility of global land cover datasets.Considering the types and characteristics of the available evidence used for assessments,we outlined four methodological approaches:(1)accuracy assessment based on regional quantitative reconstructed land cover data,(2)rationality assessment based on regional historical facts,(3)rationality assessment based on expertise,and(4)likelihood assessment based on the consistency of multiple datasets.These methods were illustrated through five case studies of credibility assessments of historical cropland cover data.This framework can also be applied in assessments of other land cover types,such as forest and grassland.Xiuqi FANG Wanyi ZHAO Chengpeng ZHANG Diyang ZHANG Xueqiong WEI Weili QIU Yu YE 2020Science China Earth Sciences2020,63,7:4
5Structural modulation of Cd(Ⅱ) supramolecular frameworks with a versatile 2,4-dipyridyl-type building block and different dicarboxylate ligands显示文摘A series of Cd(Ⅱ) coordination complexes with an elongated 2,4-dipyridyl-type building block trans-1-(2-pyridyl)-2-(4-pyridyl)ethylene (bpe) and different dicarboxylate ligands have been presented. Generally, bpe shows the unidentate coordination mode and serves as the terminal pendant, whereas the dicarboxylate ligands display various binding fashions to interlink the metal centers to form 1-D comb-like chain, ribbon, and fishbone arrays, as well as 2-D 44 and 4.82 layered networks. Notably, the bpe building block is also involved in secondary interactions such as hydrogen bonding and aromatic stacking to construct the resulting supramolecular architectures. Thermal stability of these complexes has been studied by TG-DTA technique.LI ChengPeng, YU Qian & DU Miao College of Chemistry and Life Science, Tianjin Key Laboratory of Structure and Performance for Functional Molecule, Tianjin Normal University, Tianjin 300387, China 2009Science China Chemistry2009,52,9:3
6An efficient CRISPR/Cas9 platform for targeted genome editing in rose(Rosa hybrida)显示文摘The clustered regularly interspaced short palindromic repeats(CRISPR)/CRISPR-related nuclease 9(Cas9)system enables precise,simple editing of genes in many animals and plants.However,this system has not been applied to rose(Rosa hybrida)due to the genomic complexity and lack of an efficient transformation technology for this plant.Here,we established a platform for screening single-guide RNAs(sgRNAs)with high editing efficiency for CRISPR/Cas9-mediated gene editing in rose using suspension cells.We used the Arabidopsis thaliana U6-29 promoter,which showed high activity for driving sgRNA expression,to modify the CRISPR/Cas9 system.We used our highly efficient optimized CRISPR/Cas9 system to successfully edit RhEIN2,encoding an indispensable component of the ethylene signaling pathway,resulting in ethylene insensitivity in rose.Our optimized CRISPR/Cas9 system provides a powerful toolbox for functional genomics,molecular breeding,and synthetic biology in rose.Chengpeng Wang Yang Li Na Wang Qin Yu Yonghong Li Junping Gao Xiaofeng Zhou Nan Ma 2023Journal of Integrative Plant Biology2023,65,4:1
7Influence of drying method on the material properties of nanocellulose I: Ther- mostability andcrystallinity 显示文摘Yu Chengpeng Douglas J Gardner Yousoo Han 2013Cellulose2013,20,5:1
8Electromechanical coupling properties of a self-powered vibration sensing device for near-surface observation tower monitoring显示文摘The wind-induced vibration of a remote sensing tower is the key factor affecting the stability of image sensing and structural reliability. Monitoring the vibration of a long-time unattended tower is critical to its proper operation. Currently, most monitoring devices are supplied with wired power or battery, significantly limiting their practical applications in remote areas. In this paper,a self-powered vibration sensing device based on hybrid electromechanical conversion mechanisms is proposed. The device depends on a cylindrical magnetic levitation structure sensitive to ambient vibration for transferring mechanical energy and is taken as a dual-functional heterogeneous integrated system comprising electromagnetic, piezoelectric, and triboelectric generators. When the device vibrates under environmental force driving, the suspension magnet reciprocates vertically and generates induced electromagnetic energy, which is used to power the device. Moreover, the triboelectric and piezoelectric voltages,respectively originating from magnet impact on two separation friction materials and magnetic field repulsion-induced strain deformation of a piezoelectric sheet, are used as the synergistic sensing signals. To improve the output energy, a set of dualsegmented annular coils is designed in an electromagnetic generator, which greatly avoids the obstructive effect of the suspended magnet on the magnetic flux change at its end. Compared with a whole isochoric coil, it increases the output voltage by 78.3%.For the triboelectric sensing module, a silicone film with a large specific surface area is fabricated via 3D modification, which improves the output voltage by 29.4%. Furthermore, a pair of piezoelectric sensing modules is set to improve the accuracy of comparative sensing data. The experimental measurement shows that the device maintains a high sensitivity of 6.711 V(m s;);and excellent linearity of 0.991 in the range of 0–14 m s;. This work provides a practical strategy for the vibration monitoring of remote sensing towers and exhibits attractive potential in early warning and data analysis.MU JiLiang HE HuiCheng MU JinBiao HE Jian SONG JinSha HAN XiaoTao FENG ChengPeng ZOU Jie YU JunBin CHOU XiuJian 2022Science China(Technological Sciences)2022,65,7:1
9Evolution model of a modern delta fed by a seasonal river in Daihai Lake,North China:determined from groundpenetrating radar and trenches显示文摘While deltas fed by seasonal rivers are common in modem sedimentary environments,their characteristics remain unclear as compared to those fed by perennial rivers.This study identifies a small delta discharged by a seasonal stream flowing into Daihai Lake,in northern China,which is driven by ephemeral and high-energy flood events.Detailed 3D facies architecture was analyzed using ground-penetrating radar (GPR) and sedimentary logs from outcrop and trenches.Four types of radar surfaces,including truncations of underlying inclined strata,weak reflections,and depositional surface of downlap and onlap,were identified.Six radar facies (highangle obliquetangential,low-angle subparallel,gently plane parallel,plane-parallel,chaotic,and continuous strong reflection) were identified based on distinctive reflections,including amplitude,continuity,dip,and termination patterns.Five depositional units (Unit A to E) were documented from proximal to distal delta.Seasonal discharge signatures include significant grain-size decrease over short distance,abundant Froude supercritical flow sedimentary structures,poorly developed barforms,and small-scale scour and fill structures.Records of lake-level and sediment budget were evaluated over the past 60 years.In highstand stage (1960- 1980),amalgamated channel (Units A and B),and delta front (Unit C) were deposited.In slope stage (1980-1996),the lower deposits (Units A,B,C) were eroded by Unit D with a distinct truncation surface.In lowstand stage,most eroded sediments bypassed the incised channel and accumulated in the distal part,in which a new depositional unit was formed (Unit E).The model demonstrates that deltas fed by seasonal rivers tend to accumulate large amounts of sediments carried by high magnitude floods within short periods.Beibei LIU Chengpeng TAN Xinghe YU Xin SHAN Shunli LI 2019Frontiers of Earth Science2019,13,2:1
10Complicated con- glomerate lithofacies and their effects on hydrocarbons 显示文摘Tan Chengpeng Yu Xinghe Qu Jianhua 2014Petro- leum Science and Technology2014,32,22:1
11Complicated conglomerate lithofaeies and their effects on hydrocarbons 显示文摘Tan Chengpeng Yu Xinghe Qu Jianhua 2014Petrole- um Science and Technology2014,32,22:1
12Fast Bulky Anion Conduction Enabled by Free Shuttling Phosphonium Cations显示文摘Highly conductive anion-exchange membranes(AEMs)are desirable for applications in various energy storage and conversion technologies.However,conventional AEMs with bulky HCO3-or Br-as counterion generally exhibit low conductivity because the covalent bonding restrains the tethered cationic group’s mobility and rotation.Here,we report an alternative polyrotaxane AEM with nontethered and free-shuttling phosphonium cation.As proved by temperature-dependent NMR,solid-state NMR,and molecular dynamics simulation,the phosphonium cation possesses a thermally trigged shuttling behavior,broader extension range,and greater mobility,thus accelerating the diffusion conduction of bulky anions.Owing to this striking feature,high HCO_(3)-conductivity of 105 mS cm^(-1) at 90℃ was obtained at a relatively lower ion-exchange capacity of 1.17 mmol g^(-1).This study provides a new concept for developing highly conductive anion-exchange membranes and will catalyze the exploration of new applications for polyrotaxanes in ion conduction processes.Xiaolin Ge Yubin He Kaiyu Zhang Xian Liang Chengpeng Wei Muhammad A.Shehzad Wanjie Song Zijuan Ge Geng Li Weisheng Yu Liang Wu Tongwen Xu 2022Research2022,,1:0
13Ground-penetrating radar study of beach-ridge deposits in Huangqihai Lake, North China: the imprint of washover processes显示文摘在湖的盆决定沙滩山脉的起源能经常是有问题的。为胡昂基海·莱克的北方岸上的沙滩山脉的形成负责的沉积过程被使用渗透雷达(GPR ) 的地面调查。400 MHz GPR 天线被用来完成 0.04-0.08 m 的高垂直的分辨率。雷达地层学然后用地震地层学的原则被决定。雷达外形(RF ) 被分析思考,以及思考结束模式的内部配置和连续性决定。识别 RF 掉进三个组(倾向,水平、不规则) 。使倾向的组由显示使倾向了的 RF 组成思考。水平组由 RF 组成展出主要水平的思考。在不规则的组,思考典型地是弱的。有思考与的 RF 轻轻地,向陆地,在岸正常侧面的剧降作为 washover 表存款被解释。有陡峭地向陆地蘸、使 washover 脑叶成鳞状的思考的 RF 作为被解释。当冲洗没能进入水的重要身体,沉积完全在相对弄平的地形学上发生时, Washover 表发展。当冲洗进入地形学向陆地陡峭地在蘸的一个区域时, Washover 脑叶开发发生,并且沉积发生在 washover 表或以前的 washover 脑叶的表面上。当从垂直地并且旁边地叠的 washover 表和 washover 脑叶完全被形成,沙滩山脉存款被解释。他们被波浪主导的过程和沿岸的水流补充的第二等的冲洗过程形成。Xin SHAN Xinghe YU Peter D. CLIFT Chengpeng TAN Shunli LI Zhixing WANG Dongxu SU 2016Frontiers of Earth Science2016,10,1:0
14Fast Bulky Anion Conduction Enabled by Free Shuttling Phosphonium Cations显示文摘Highly conductive anion-exchange membranes(AEMs)are desirable for applications in various energy storage and conversion technologies.However,conventional AEMs with bulky HCO_(3)^(-)or Br-as counterion generally exhibit low conductivity because the covalent bonding restrains the tethered cationic group’s mobility and rotation.Here,we report an alternative polyrotaxane AEM with nontethered and free-shuttling phosphonium cation.As proved by temperature-dependent NMR,solid-state NMR,and molecular dynamics simulation,the phosphonium cation possesses a thermally trigged shuttling behavior,broader extension range,and greater mobility,thus accelerating the diffusion conduction of bulky anions.Owing to this striking feature,high HCO_(3)^(-)conductivity of 105 mS cm^(-1)at 90℃ was obtained at a relatively lower ion-exchange capacity of 1.17 mmol g^(-1).This study provides a new concept for developing highly conductive anion-exchange membranes and will catalyze the exploration of new applications for polyrotaxanes in ion conduction processes.Xiaolin Ge Yubin He Kaiyu Zhang Xian Liang Chengpeng Wei Muhammad A.Shehzad Wanjie Song Zijuan Ge Geng Li Weisheng Yu Liang Wu Tongwen Xu 2021Research2021,,1:0
返回顶部 每页显示:
共1页 首页 上一页 第1页 下一页 末页 /1 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费