维普中文期刊产品整合服务
24篇 您的检索式:作者名="ZHENG Yanpeng"
    题名 作者 年代 出处 被引量
1Rapid and Efficient Gene Modification in Rice and Brachypodium Using TALENs显示文摘Qiwei Shan Yanpeng Wang Kunling Chen Zhen Liang Jun Li Yi Zhang Kang Zhang Jinxing Liu Daniel F. Voytas Xuelian Zheng Yong Zhang Caixia Gao 2013Molecular Plant2013,6,4:37
2Reaction environment self-modification on low-coordination Ni^(2+)octahedra atomic interface for superior electrocatalytic overall water splitting显示文摘Large scale synthesis of high-efficiency bifunctional electrocatalyst based on cost-effective and earth-abundant transition metal for overall water splitting in the alkaline environment is indispensable for renewable energy conversion.In this regard,meticulous design of active sites and probing their catalytic mechanism on both cathode and anode with different reaction environment at molecular-scale are vitally necessary.Herein,a coordination environment inheriting strategy is presented for designing low-coordination Ni^(2+)octahedra(L-Ni-8)atomic interface at a high concentration(4.6 at.%).Advanced spectroscopic techniques and theoretical calculations reveal that the self-matching electron delocalization and localization state at L-Ni-8 atomic interface enable an ideal reaction environment at both cathode and anode.To improve the efficiency of using the self-modification reaction environment at L-Ni-8,all of the structural features,including high atom economy,mass transfer,and electron transfer,are integrated together from atomic-scale to macro-scale.At high current density of 500 mA/cm2,the samples synthesized at gram-scale can deliver low hydrogen evolution reaction(HER)and oxygen evolution reaction(OER)overpotentials of 262 and 348 mV,respectively.Kaian Sun Lei Zhao Lingyou Zeng Shoujie Liu Houyu Zhu Yanpeng Li Zheng Chen Zewen Zhuang Zhaoling Li Zhi Liu Dongwei Cao Jinchong Zhao Yunqi Liu Yuan Pan Chen Chen 2020Nano Research2020,13,11:12
3Gravity and magnetic field and tectonic structure character in the southern Yellow Sea显示文摘The research of the geophysical survey in the cast of the southern Yellow Sea (SYS) (122°-125°E) in 1999 reveals that the SYS has a structure of three-uplifts and two-basins. The structure can be well concordant with the gravity and magnetic anomalies. In the basins, most of the gravity and magnetic anomalies are low and gentle. As well in the uplifts, the gravity anomalies are high positive ones,but the magnetic anomalies are plus and minus variant ones.Seismic data show that the mid-uplift is a Cenozoic one. The Paleozoic is under the Q+N strata, the thickness of which is less than 1 km, with no Palaeogene. The Wunansha uplift area and the Sunan uplift area have good continuity, which indicates that they belong to the same geological unit. The basin in the northern part of SYS, which developed in the late Cretaceous period, is a Cenozoic one mainly made up of Cenozoic sediment. On the contrary, the basin in the southern part is the seaward extension of Subei basin and is a medial Cenozoic sediment basin mainly made up of Cenozoic sediment. Because of the striking left-lateral sense translation of Tanlu fault zone, the east plate of fault zone moved northward on a large scale, which generated a massive north-south pull-apart stress field to make the earth crust pulled apart, revolved and tilted, and the pulling-apart basin came into being in the upper part of the crust.LIANG Ruicai, PEI Yanliang, ZHENG Yanpeng WEI Jianwei & LIU Yanguang Key Laboratory of Marine Sedimentolog and Environmental Geology, First Institute of Oceanography. State Oceanic Administration. Qingdao 266061. China 2003Chinese Science Bulletin2003,48,B06:12
4Joint land-sea seismic survey and research on the deep structures of the Bohai Sea areas显示文摘This paper presents the survey and research work of two land-sea profiles in the Bohai Sea,China,carried out in 2010–2011,including the seismic sources on land and in the sea,the ocean bottom seismographs(OBS)and their recovery,the coupling of OBS and the environment noise in sea area,the data quality of OBSs,and the result of data analysis.We focused on the investigation of crustal structures revealed by the two NE\EW-trending joint land-sea profiles.In combination with the Pn-velocity distribution and gravitymagnetic inversion results in the North China Craton,we propose that the undulation of the Moho interface in the Bohai and surrounding areas is not strong,and the lithospheric thinning is mainly caused by the thinning of its mantle part.The research result indicates that obvious lateral variations of Moho depth and seismic velocity appear nearby all the large-scale faults in Bohai Sea,and there is evidence of underplating and reforming of the lower crust by mantle material in the Bohai area.However,geophysical evidence does not appear to support the'mantle plume'or'delamination'model for the North China Craton destruction.The crustal structure of the Bohai Sea revealed'a relatively normal crust and obviously thinned mantle lid',local velocity anomalies and instability phenomena in the crust.These features may represent a combined effect of North China-Yangtze collision at an early stage and the remote action of Pacific plate subduction at a late stage.HAO Tianyao YOU Qingyu LIU Lihua LV Chuanchuan XU Ya LI Zhiwei ZHAO Chunlei ZHENG Yanpeng LIU Chenguang HAN Guozhong 2013Acta Oceanologica Sinica2013,32,12:11
5Recent advances in precision measurement & pointing control of spacecraft显示文摘There exists an increasing need for precision measurement&pointing control and extreme motion stability for current and future space systems,e.g.,Ultra-Performance Spacecraft(UPS).Some notable technologies of realizing Ultra-Pointing(UP)ability have been developed particularly for Ultra-accuracy Ultra-stability Ultra-agility(3 U)spacecraft over recent decades.Usually,Multilevel Compound Pointing Control Techniques(MCPCTs)are deployed in aerospace engineering,especially in astronomical observation satellites and Earth observation satellites.Modern controllers and/or algorithms,which are a key factor of MCPCTs for 3 U spacecraft,especially the jitter phenomena that commonly exist in a UPS Pointing Control System(PCS),have also been effectively used in some UP spacecraft for a number of years.Micro-vibration suppression approaches,however,are often proposed to deal with low-level mechanical vibration or disturbance in the microgravity environment that is common for UPS.This latter approach potentially is one of the most practical UP techniques for 3 U tasks.Some emerging advanced Disturbance-Free Payload(DFP)satellites that exploit the benefits of non-contact actuators have also been reported in the literature.This represents an interesting and highly promising approach for solving some challenging problems in the area.This paper serves as a state-of-the-art review of UP technologies and/or methods which have been developed,mainly over the last decade,specifically for or potentially could be used for 3 U spacecraft pointing control.The problems discussed in this paper are of reference significance to UPS and millisecond optical sensors,which are involved in Gaofeng Project,deep space exploration,manned space flight,and gravitational wave detection.Lin LI Li YUAN Li WANG Ran ZHENG Yanpeng WU Xiaoyan WANG 2021Chinese Journal of Aeronautics2021,34,10:8
6Postmarketing safety evaluation: depside salt injection made from Danshen(Radix Salviae Miltiorrhizae)显示文摘OBJECTIVE: To systematically examine the postmarketing safety of depside salt injection made from Danshen(Radix Salviae Miltiorrhizae),identifythe potential risk factors, and ensure its clinical safety.METHODS: We examined a comprehensive series of studies on the production process, quality standards, pharmacology, population pharmacokinetics, and safety evaluation of depside salt injection made from Danshen(Radix Salviae Miltiorrhizae). Data from Ⅰ-Ⅳ clinical drug trials, hospital information systems(HIS), and spontaneous reporting systems(SRS) were also analyzed.RESULTS: The effective components of salvianolic acid salt content reached almost 100%, and the magnesium lithospermate B content reached morethan 80%. The median lethal dose(LD50) calculated by the Bliss method was 1.49 g/kg, with 95%confidence intervals of 1.29-1.72 g/kg. Long-term tests on Beagle dogs indicated that doses of less than 80 mg/kg were safe and doses of 320 mg/kg were toxic. Adverse drug reactions(ADRs) included digestive disorders; drug-induced erythrocyte deformation in lung, liver, spleen, kidney, bone marrow, intestinal mucosa, lymph nodes, and other tissues; megakaryocytes in lung, liver, and spleen resulting from mild hemolysis; and mild hyperplasia in bone marrow hematopoietic tissue. Other studies indicated no irritative effect of the injection on local tissues and blood vessels, and no allergic reactions, erythrocyte coagulation, or hemolysis. SRS data showed that the most common ADRs were headache, head distention, dizziness, facial flushing, skin itching, thrombocytopenia, and the reversibility of elevated Aspartate transaminase. HIS data indicated no damage to renal function from using depside salt injection made from Danshen(Radix Salviae Miltiorrhizae) at a dosage higher than the recommended dose.CONCLUSION: This study analyzes the clinical characteristics of ADRs from depside salt injection made from Danshen(Radix Salviae Miltiorrhizae),and discusses the factors influencing such reactions. It provides scientific reference and recommendations for clinically safe medication of the Danshen injection.Yanpeng Chang Wen Zhang Yanming Xie Xiangyang Xu Rendi Sun Zheng Wang Ruihua Yan 2014Journal of Traditional Chinese Medicine2014,34,6:8
7Assessment of structural stability in Bohai Sea area based on AHP-GDM model显示文摘The AHP-GDM model is used for the assessment of structural stability, with the Bohai Sea area as an example. In this model, the credit degree of each expert is calculated through the assessment matrix based on the similarity and diversity of vector. The comprehensive opinions of expert panel are quantitatively obtained by considering the effect of credit degree. According to the geological structural setting, the Bohai Sea is divided into twelve assessment zones of structural stability by non-uniform element method. The structural stability grade of each zone is obtained on the basis of the latest geophysical data, earthquake statistical data, and the information of fault activities, current stress field and crustal deformation. The results show that there are one relatively stable area, three relatively sub-stable areas, six relatively sub-unstable areas and two relatively unstable areas. The assessment results of non-uniform element method are very close with those of uniform grid method with size of 0.25° in longitude direction and 0.14° in latitude direction. However the workload of non-uniform element method is only 1/16 of the latter. Compared with traditional assessment methods of structural stability, a more objective and reliable assessment result can be obtained by combining non-uniform element method and AHP-GDM model.XIU Zongxiang LIU Baohua XIE Qiuhong LI Xishuang LIU Chenguang PEI Yanliang ZHENG Yanpeng 2013Acta Oceanologica Sinica2013,32,4:8
8Marine Engineering Geological Exploration Information System(MEGEIS):A GIS-based Application to Marine Resources Exploitation显示文摘Based on the ArcGIS geographic information system and the ORACLE database management system,this paper reports our studies on the technology of Marine Engineering Geological Exploration Information System(MEGEIS). By analyzing system structure,designing function modules and discussing data management,this paper systematically proposes a framework of technol-ogy to integrate,manage,and analyze the seabed information comprehensively. Then,the technology is applied to the design and development of the Bohai Sea Oilfield Paradigm Area Information System. The system can not only meet the practical demands of marine resources exploration and exploitation in the Bohai Sea oilfield,but also serve as a preparatory work in theory and technology for the realization of the 'Digital Seabed'.SU Tianyun LIU Baohua ZHAI Shikui LIANG Ruicai ZHENG Yanpeng 2007Journal of Ocean University of China2007,6,3:3
9Research on methods of designing and building digital seabed database显示文摘苏天贇 Liu Baohua Zhai Shikui Liang Ruicai Zheng Yanpeng Fu Qiang 2007High Technology Letters2007,13,2:1
10Image motion and experimental study of a 0.1″space pointing measuring instrument for micro-vibration conditions显示文摘There exists an increasing need for Milli-Arc-Seconds(MAS)accuracy pointing measurement for current and future space systems.To meet the 0.1″space pointing measurement accuracy requirements of spacecraft in future,the influence of spacecraft micro-vibration on a 0.1″Space Pointing Measuring Instrument(SPMI)is studied.A Quasi-Zero Stiffness Device(QZSD)with adaptive adjustment and variable stroke was proposed.Then,a series of micro-vibration experiments of the SPMI were carried out.The influence of the micro-vibration generated by Guidance Navigation Control(GNC)attitude control components under different attitudes on the SPMI was analyzed.Point spread function of image motion in micro-vibration was also derived.Further,the changes of image motion under the micro-vibration environment were evaluated by extracting the gray centroid of the images,and the experiment processes and results are deeply discussed.The results show that the firstorder frequency of the QZSD system is 0.114 Hz,and it is induced by a double pendulum system;the image motion of single flywheel spinning reached 0.015 pixels;whilst the image motion reached 0.03 pixels when three flywheels are combined spinning.These latest findings provide a beneficial theoretical and technical support for the development of spacecraft with 0·1″pointing accuracy.Lin LI Li YUAN Li WANG Miaomiao WANG Xiaoxue GONG Jie SUI Yanpeng WU Ran ZHENG 2023Chinese Journal of Aeronautics2023,36,2:1
11Cross-talking between autophagy and viral infection in mammalian cells显示文摘Autophagy is a cellular process in degradation of long-lived proteins and organelles in the cytosol for maintaining cellular homeostasis,which has been linked to a wide range of human health and disease states,including viral infection.The viral infected cells exhibit a compli-cated cross-talking between autophagy and virus.It has been shown that autophagy interacts with both adaptive and innate immunity.For adaptive immunity,viral antigens can be processed in autophagosomes by acidic proteases before major histocompatibility complex(MHC)class II presentation.For innate immunity,autophagy may assist in the delivery of viral nucleic acids to endosomal TLRs and also functions as a part of the TLR-or-PKR-downstream responses.Autophagy was also reported to suppress the magnitude of host innate antiviral immunity in certain cases.On the other hand,viruses has evolved many strategies to combat or utilize the host autophagy for their own benefit.In this review we discussed recent advances toward clarifying the cross-talking between autophagy and viral infection in mammalian cells.Hongya HAN Lishu ZHANG Xinxian DAI Yanpeng ZHENG 2010Frontiers in Biology2010,5,6:1
12New paleomagnetic results from Ceno-Mesozoic volcanic rocks along southern rim of the Tarim Basin, China*显示文摘Meng Zifang Deng Yunshan Ding Zhaohai Zheng Yanpeng Li Yong’an Sun Dongjiang 1998Science in China Series D: Earth Sciences1998,,2:1
13Velocity structure in the South Yellow Sea basin based on first-arrival tomography of wide-angle seismic data and its geological implications显示文摘The South Yellow Sea basin is filled with Mesozoic-Cenozoic continental sediments overlying pre-Palaeozoic and Mesozoic-Palaeozoic marine sediments.Conventional multi-channel seismic data cannot describe the velocity structure of the marine residual basin in detail,leading to the lack of a deeper understanding of the distribution and lithology owing to strong energy shielding on the top interface of marine sediments.In this study,we present seismic tomography data from ocean bottom seismographs that describe the NEE-trending velocity distributions of the basin.The results indicate that strong velocity variations occur at shallow crustal levels.Horizontal velocity bodies show good correlation with surface geological features,and multi-layer features exist in the vertical velocity framework(depth:0–10 km).The analyses of the velocity model,gravity data,magnetic data,multichannel seismic profiles,and drilling data showed that high-velocity anomalies(>6.5 km/s)of small(thickness:1–2 km)and large(thickness:>5 km)scales were caused by igneous complexes in the multi-layer structure,which were active during the Palaeogene.Possible locations of good Mesozoic and Palaeozoic marine strata are limited to the Central Uplift and the western part of the Northern Depression along the wide-angle ocean bottom seismograph array.Following the Indosinian movement,a strong compression existed in the Northern Depression during the extensional phase that caused the formation of folds in the middle of the survey line.This study is useful for reconstructing the regional tectonic evolution and delineating the distribution of the marine residual basin in the South Yellow Sea basin.Weina Zhao Zhiqiang Wu Fanghui Hou Xunhua Zhang Tianyao Hao Hanjoon Kim Yanpeng Zheng Shanshan Chen Huigang Wang 2023Acta Oceanologica Sinica2023,42,2:1
14Morphology and architecture of the typical erosion-genesis submarine canyons on the East China Sea slope显示文摘The Yithi submarine canyons,composed of four canyons less than 60 km in length,are located on the narrowest part of the East China Sea(ECS) slope.They extend from the shelf break at 160 m down to water depth of 1 500 m with an average gradient(along the canyon axis) of 3°(<1 000 m) and 0.7°(>1000 m).The sinuosity of the canyons ranges form 1.02 to 1.14 and their pathways extend radially from the shelf break to the axis of the Okinawa Trough.Structural and evolution pattern of the Yithi canyons are mainly controlled by sediment mass-movements and turbidity current and similar with that of the canyons in Ebro continental slope.The whole canyon system consists of three parts:the canyon,the channel and the fan.Slumps and slides often develop in the upper part of canyon where the water depth is less than 1000 m,and the turbidities usually developed on the fan.The scale of turbidites becomes smaller and their inner structures become more regular towards the ends of the canyons.Canyon-fans are often associated with small angle progradational reflection.Most canyon-fans and levees were transversely cut by active normal faults with NEE-SWW trending that are coupled to the modern extension of the Okinawa Trough.According to the age of formation of canyon-fans and sediments incised by canyons,we can infer that the Yithi canyons were formed since the middle the Medio-Pleistocene.LIU Baohua ZHAO Yuexia LI Xishuang KAN Guangming PEI Yanliang ZHENG Yanpeng 2009Acta Oceanologica Sinica2009,28,6:1
15Multilayered piezomagnetic/piezoelectric composite with periodic interface cracks under magnetic or electric field显示文摘Yongping Wan Yanpeng Yue Zheng Zhong 2012Engineering Fracture Mechanics2012,,:1
16Enhancement of Kerr nonlinearity via spontaneously generated coherence in a four-level N-type atomic system显示文摘Wen-juan Jiang Xiang’an Yan Jian-ping Song Huai-bin Zheng Chuanxing Wu Bao-yin Yin Yanpeng Zhang 2008Optics Communications2008,,:1
17Study on the method of precision adjustment of star sensor显示文摘Star sensors are indispensable spatial measurement sensors for high-resolution earth observation and astronomical observations, and the demand for high measurement accuracy of satellite sensors continues to increase; thus, the star sensor optical machine adjustment error cannot be ignored. The commonly used installation error correction method cannot solely meet the precision analysis requirements. In this paper, the relationship between the optical machine installation and the star sensor measurement error is analyzed, and several common adjustment error correction methods are compared. An adjustment method for optical machines is proposed to meet the requirements of very high precision star sensors. The assembly precision requirements of the investigated very high precision star sensor are analyzed considering the whole machine, and then the optical components are controlled through optical precision adjustments to satisfy the precision requirements. Finally, through the complete machine calibration, the star sensor precision adjustment for an optical machine structure is verified. This method meets the requirements of very high precision sensors and is suitable for the precision adjustment of optical machine structures, which is of practical significance to improve the precision of star sensors.Xiaoyan Wang Ran Zheng Yanpeng Wu Jianbo Sun Jun Zhong Long Wang Miaomiao Wang 2018Nanotechnology and Precision Engineering2018,1,4:1
18A New Tetrasubstituted Imidazole Based Difunctional Probe for UV-spectrophotometric and Fluorometric Detecting of Fe^3+Ion in Aqueous Solution显示文摘Two new compounds,4-(2-bromophenxl-4,5-diphenyl-imidazol-1-yl)ani 1 ine(probe 1)and 4-[2,4,5-tris(4-bromopheny1)-1H-imidazol-1-y1]aniline(probe 2),were synthesized via a soft and high-efficiency one-pot microwave-assisted method under solvent-free conditions.Their sensing to different metal ions was detected by UV spectrophotometry and fluorescence spectrometry.Probe 2 revealed highly selective and sensitive UV and fluorescence response to Fe^3+ion.Upon the addition of Fe^3+ion,probe 2 showed obvious color change of the solution,conspicuous absorbance enhancement and relatively quick fluorescence quenching.The detection limit for Fe^3+ion was respectively calculated to be 0.72μmol/L(fluorescent detection)and 0.48μmol/L(UV-spectnim detection).Also,probe 2 was bound by Fe^3+ion to tonn a 1:1 complex.Moreover,preliminary application of probe 2 tor detecting Fe^3+ion in aqueous solution was attempted,and satisfying results were obtained.SHI Yanpeng CHEN Xiaodong MI Zhiming ZHENG Ran FAN Jie GU Qiang ZHANG Yuinin 2019Chemical Research in Chinese Universities2019,35,2:0
19Pushing the Limit of Flexible Batteries显示文摘Alongside the rapid development of flexible and wearable electronics,the search for reliable,safe,and high-energy rechargeable flexible batteries(FBs)has become a research hotspot in recent years.Although there are some prototype FBs exhibited by the industry and a rapidly increasing number of publications reported by academia,most demonstrations are shown on a laboratory scale,and it is still difficult to find real implementation of the technology in the market.This perspective aims to discuss and analyze the key metrics,including energy density,flexibility,and safety,that are critical to pushing FBs to a commercially viable level,with a special focus on the lithium batteries and zinc batteries most reported in the literature.We first compare the figure of merit of FBs(fbFOM)of existing lithium-based and zinc-based FBs with the requirement for market applications.We then analyze the most desired cell configurations toward high flexibility,followed by systematic discussions on features and materials selection toward high energy density FBs.Third,we discuss strategies to enhance battery safety.An outlook of the future developments needed to address the gaps between the state-of-the-art demonstrations and real applications is provided at the end of this article.Chuan Xie Yanpeng Guo Zijian Zheng 2023CCS Chemistry2023,5,3:0
20Application of Acoustic Technique to Surveying a Buried Fault in Tianjin显示文摘We carried out surveying on the shallow structure and faulted-stratum of the Haihe fault in Tianjin using acoustic surveying methods such as the single-channel seismic technique. The result shows that the method can obtain satisfactory results in wide and deep river courses. It also shows that in the Tanggu area of Tianjin, the upper fault point of Haihe fault is about 30m beneath the river bed and the corresponding latest active period is Q^3_p~Q^1_h, which is consistent with the former borehole survey result. In the offshore area of the Bohai Sea, Haihe fault shows as a NWW-NEE strike dense fault zone and its upper fault point is less than 30m beneath the seabed. It shows that the active characteristics of Haihe fault in the Bohai Sea correspond to the Tanggu area.Chen Yukun Zheng Yanpeng Gao Wuping Wang Zhisheng 2008Earthquake Research in China2008,22,3:0
返回顶部 每页显示:
共2页 首页 上一页 第1页 下一页 末页 /2 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