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| 1 | Cyclic Sequences, Events and Evolution of the Sino-Korean Plate, with a Discussion on the Evolution of Molar-tooth Carbonates, Phosphorites and Source Rocks显示文摘This paper gives an account of the research that the authors conducted on the cyclic sequences, events and evolutionary history from Proterozoic to Meso-Cenozoic in the Sino-Korean plate based on the principle of the Cosmos-Earth System. The authors divided this plate into 20 super-cyclic or super-mega-cyclic periods and more than 100 Oort periods. The research focused on important sea flooding events, uplift interruption events, tilting movement events, molar-tooth carbonate events, thermal events, polarity reversal events, karst events, volcanic explosion events and storm events, as well as types of resource areas and paleotectonic evolution. By means of the isochronous theory of the Cosmos-Earth System periodicity and based on long-excentricity and periodicity, the authors elaborately studied the paleogeographic evolution of the aulacogen of the Sino-Korean plate, the oolitic beach platform formation, the development of foreland basin and continental rift valley basin, and reconstructed the evolution of tectonic paleogeography and stratigraphic framework in the Sino-Korean plate in terms of evolutionary maps. Finally, the authors gave a profound discussion on the formation and development of molar-tooth carbonates, phosphorites and source rocks. | MENG Xianghua and GE MingInstitute of Sedimentary Basin, China University of Geosciences, Beijing 100083 E-mail: mengxh@cugb.edu.cn Liu Xinzhu and Zhu Xiling | 2003 | Acta Geologica Sinica(English Edition)2003，77，3： | 17 |
| 2 | Photochemical pollution in Lanzhou, China - A case study显示文摘The photochemical air pollution in Xigu district of Lanshou city, Gansu Province was studied during a period of 1981-1984. The extremely high NMHC/NOx ratio and ozone level elevation after rain have been noticed. A series of outdoor and indoor reaction chamber simulation experiments conducted in order to understand the specific conditions. The ozone formation under NMHC/NOx condition and the possible reason for high ozone concentration after rain are discussed. | Tang Xiaoyan , Li Jinglong, Dong ZhenXing, Wang Yuying,Wang Wenxing , Qi Liwen, Liu Xiling, Zhang Yutian, Zhang Xuejin,Tian Bingshen, Jin Suwen , Yang Lingqing and Zhang Yixin Department of Technical Physics,Peking University, Beijing, China. Chinese Reaearch Academy of Eavironmental Sciences, Beijing,China. Gansu Provincial Environmental Research Institute, Lanshou, China. Lanshou Petrochemical Engineering Institute, Lanshou, China. | 1989 | Journal of Environmental Sciences1989，1，1： | 15 |
| 3 | High- and Ultrahigh-pressure Metamorphism and Retrogressive Textures of Gneiss in the Donghai Area——Evidence from gneisses in drillhole ZK2304显示文摘In the gneisses from the drillhole ZK2304 of the Donghai area, there have been preserved high- and ultrahigh-pressure metamorphic mineral assemblages, a series of complicated retrogressive textures and relevant metamorphic reactions. In addition to garnet, jadeititic-clinopyroxene and rutile, other peak stage (M2) minerals in some gneisses include phengite, aragonite and coesite or quartz pseudomorphs after coesite. The typical peak-stage mineral assemblages in gneisses are characterized by garnet + jadeitic-clinopyroxene + rutile + coesite, garnet + jadeitic-clinopyroxene + phengite + rutile ± coesite and garnet + jadeitic-clinopyroxene + aragonite + rutile ± coesite. The grossular content (Gro) in garnet is high and may reach 50. 1 mol%. The SiO2 content of phengite ranges from 54.37% to 54.84% with 3.54-3.57 p.f.u. Quartz pseudomorphs after coesite occur as inclusions in garnet.The gneisses of the Donghai area have been subjected to multistage recrystallization and exhibit a closewise P-T | LIU Fulai, XU Zhiqin, XU Huifen and YANG Jingsui Institute of Geology, CAGS, 26 Baiwanzhuang Rd., Beijing 100037 Zhu Xiling | 1999 | Acta Geologica Sinica(English Edition)1999，73，3： | 12 |
| 4 | Characteristics analysis on high density spatial sampling seismic data显示文摘中国的大陆人免职盆被复杂地质的结构和各种各样的水库岩性学描绘。因此,高精确探索方法被需要。高密度空间采样是一种新技术增加地震探索的精确性。我们简短讨论点来源和接收装置技术,分析高密度在 situ 方法的空间采样,介绍吉季斯· J · O 介绍的对称的采样原则。Vermeer,并且讨论高密度从波浪地连续性的观点的空间采样技术。我们强调高密度的分析空间采样特征,包括高密度,首先,裂缝为近的表面结构的调查有利,改善静态的修正精确,在到增加的短偏移量的稠密的接收装置间距的使用在浅深度的有效范围,和思考成像的精确性。协调噪音不是 aliased 和噪音分析精确,抑制作为结果增加。空间采样提高的高密度各种各样的数学变换的波浪地连续性和精确性,它受益飘动地分离。最后,我们指出空间采样技术是的高密度的困难的部分处理的数据。更多的研究需要在分析并且处理地震数据的巨大的数量的方法上被做。 | Cai Xiling Liu Xuewei Deng Chunyan Lv Yingme | 2006 | Applied Geophysics2006，3，1： | 11 |
| 5 | Geochronology and Geochemical Characteristics of the Early Mesozoic Tangquan Pluton in Southwestern Fujian and Its Tectonic Implications显示文摘The Tangquan granodioritic pluton in Datian County, southwestern Fujian, China, which extends in a NE direction with an exposed area of about 130 km2, used to be considered a product of Early Cretaceous magmatism. The present study suggests for the first time that the pluton was formed in the Early Jurassic by using multiple methods for isotopic dating, which give zircon U-Pb ages of 186.8 Ma and 179.0 Ma, Rb-Sr isochron age of 162.02(4.5 Ma, and biotite 40Ar/39Ar plateau age of 158.1(0.7 Ma. The cooling rate for the pluton was relatively low (4.76°C/Ma) during the early stage (183(162 Ma) because of the compressional environment. It was emplaced in a higher cooling rate (50°C/Ma) in an extensional environment during the later stage (162(158 Ma). The granodiorites are metaluminous(peraluminous, relatively enriched in Na2O and depleted in K2O, and characteristic of I-type granites of crust-mantle mixed sources. They are moderately enriched in Rb, Th, Hf and LREE, and depleted in Ti, Nb, Ta and Sr, and have geochemical features of cal-alkaline rocks of an island arc or active continental margin. Their (87Sr/86Sr)i ratio varies from 0.70769 to 0.70822, εNd(t) from -9.68 to -10.07 and TDM from 1.52 to 1.55 Ga. They were formed by mixing of mantle-derived mafic magma with the granitic magma resulting from partial melting of crust-derived materials in an upwelling of the asthenospheric mantle in South China during the Early Mesozoic. | MAO Jianren, HU Qing, XU Naizheng, XIE Fanggui and TAO Kuiyuan, Nanjing Institute of Geology and Mineral Resources, Nanjing, Jiangsu 210016 E-mail: mjrmh@sina.com Hao Ziguo and Zhu Xiling | 2003 | Acta Geologica Sinica(English Edition)2003，77，3： | 10 |
| 6 | Identification and screening of nitrogenefficient cotton genotypes under low and normal nitrogen environments at the seedling stage显示文摘Background: Large quantities of nitrogen(N) fertilizer applied to cotton cropping systems support high yields but cause adverse environmental impacts such as N_20 emission and water eutrophication. The development of cotton cultivars with higher N use efficiencies suitable for low-N conditions is therefore important for sustainable production. In this study, we evaluated 100 cotton genotypes in 2016 for N use efficiency and related traits at the seedling stage.Methods: Sand culture experiment was conducted with low N levels(0.01 g·kg^(-1)) or normal N levels(0.1 g·kg^(-1)).We investigated plant height, SPAD value(soil plant analysis development chlorophyll meter), dry weight, N accumulation, N utilization efficiency, and N uptake efficiency. Through descriptive statistics, principal component analysis and heatmap clustering analysis, we confirmed the evaluation index system of N-efficient genotypes and the classification of N-efficient genotypes.Results: Significant differences were observed among N levels and genotypes for all agronomic traits and N levels.Coefficients of variation varied greatly and ranged from 6.7~28.8 and 7.4~20.8 under low-N and normal-N treatment, respectively. All traits showed highly significant positive correlations with each other, except SPAD value.The principal components under both N levels were similar, showing that total dry weight, aboveground dry weight, total N accumulation, and N uptake efficiency were important components. We confirmed these four traits as suitable screening indexes for low N tolerance. Based on the results of heatmap clustering and scatter diagram analysis of N efficiency value, 10 genotypes were found low-N tolerant, in which five varieties were inefficient under both low and normal N conditions, while four varieties were found efficient under low-N conditions but inefficient under normal-N conditions. Only one variety was efficient under both low and normal-N conditions. Meanwhile, 20 genotypes were identified as low-N sensitive ones, in which 19 genotypes were inefficient under low-N conditions but efficient under normal-N conditions, one variety was inefficient under both low and normal-N conditions.Conclusion: We preliminarily identified Kashi as a low-N tolerant and N-efficient cotton genotype, and CCRI 64 as a lowN sensitive and N-inefficient cotton genotype. Further studies should be carried out to verify the yield and heritability effect of specific genotypes in the field. | ZHANG Hengheng FU Xiaoqiong WANG Xiangru GUI Huiping DONG Qiang PANG Nianchang WANG Zhun ZHANG Xiling SONG Meizhen | 2018 | Journal of Cotton Research2018，1，2： | 9 |
| 7 | Development of Overpressure in the Tertiary Damintun Depression, Liaohe Basin, Northern China显示文摘The Damintun depression is one of the four depressions in the Liaohe basin in northern China, and is a rift basin developed in the Paleogene. This paper discusses in detail the characteristics of pressure and fluid potential of the Damintun depression based on a synthesis of the data from boreholes, well tests and seismic surveys. Data from sonic logs, well tests and seismic velocity measurements are used to study the pressure characteristics of the areas. From the sonic log data, shales can be characterized as normally pressured, slightly overpressured or highly overpressured; from the well test data, the pressure-depth gradient in oil-producing intervals implies hydrostatic pressure in general. Most seismic profiles in the Damintun depression are of sufficiently high quality for seismic velocities to be measured. The fluid pressures, excess pressures and pressure coefficients in 47 representative seismic profiles are predicted using formula calculation methods, and further transformed to fluid potentials. The resultant pressure profiles show normal pressure, moderate overpressure and intense overpressure increasing with depth. The pressure evolution can be divided into three stages as initial generation, partial dissipation and re-accumulation. Fluid potential is the principal factor controlling hydrocarbon migration in a reservoir. Its distribution varies with depth; above the T4 interface a gravity-flow dominates, whereas beneath it a compaction flow dominates. The development of overpressure in the Damintun depression has a crucial influence on the distribution of fluid potentials, which agrees with that of overpressure in general. The results of the fluid potential analysis indicate that the areas of Dongshenpu-Xinglongpu and the southwestern part of the depression are most favorable for hydrocarbon migration and accumulation. | YE Jiaren, HAO Fang and CHEN JianyuFaculty of Earth Resources, China University of Geosciences, Wuhan, Hubei 430074 E-mail: jrye@cug.edu.cn Ren Xifei and Zhu Xiling | 2003 | Acta Geologica Sinica(English Edition)2003，77，3： | 7 |
| 8 | Gas-water stratified flow patterns from electromagnetic tomography显示文摘Because of gravitational differentiation of multi-phase fluids,gas-water flow is usually stratified in highly inclined or horizontal gas wells.By using electrode arrays to scan flowing fluids, electromagnetic tomography can identify the flow patterns of mixed fluid from the different electrical properties of gas and water.The responses for different gas-water interface locations were calculated and then physical measurements were undertaken.We compared the results of the numerical simulation with the experimental data,and found that the response characteristics were consistent in the circumstances of uniform physical fields and stratified flows.By analyzing the signal characteristics,it is found that,with the change of the interface location,the response curves showed'steps'whose position and width were decided by the location of fluid interface.The measurement accuracy of this method depended on the vertical distance between adjacent electrodes.The results showed that computer simulation can simulate the measurement of the electromagnetic tomography accurately,so the physical experiment can be replaced. | Wang Xiaoxing Wu Xiling | 2009 | Petroleum Science2009，6，3： | 7 |
| 9 | Trends of Urban Air Pollution in Zhengzhou City in 1996-2008显示文摘Urban air pollution is a commonly concerned environmental problem in the world.Identification of air quality trend using long-term monitoring data is helpful to understand the effectiveness of pollution control strategies.This study,using data from six monitoring stations in Zhengzhou City,analyzed the changing trend in concentrations of SO 2,NO x /NO 2 and TSP/PM 10 in 1996-2008,based on non-parametric Mann-Kendall test and Sen's slope estimator,and evaluated the comprehensive air pollution level using Multi-Pollutant Index(MPI).It was found that the concentration of each pollutant exceeded obviously the World Health Organization(WHO) guideline value,but the changing trend varied:SO 2 and NO 2 were significantly increased mainly due to an increase in coal consumption and vehicle number,while NO x,TSP and PM 10 decreased.The air pollution was serious,and differed markedly among the three functional regions:it is the most severe in the Industrial and Residential Area(IRA),followed by the Transportation Hub and Business District(THBD),and then the High-tech,Cultural and Educational Area(HCEA).Different from NO 2 concentration that had a similar change trend/rate among the function regions,the change rate of PM 10 concentration differed spatially,decreased much more obviously in THBD than other two regions.For the whole city,the comprehensive air pollution level declined gradually,illustrating that the air quality in Zhengzhou was improved in the last decade. | DU Xile LU Changhe WANG Hairong MA Jianhua | 2012 | Chinese Geographical Science2012，22，4： | 6 |
| 10 | A Clustering-tree Topology Control Based on the Energy Forecast for Heterogeneous Wireless Sensor Networks显示文摘How to design an energy-efficient algorithm to maximize the network lifetime in complicated scenarios is a critical problem for heterogeneous wireless sensor networks(HWSN).In this paper, a clustering-tree topology control algorithm based on the energy forecast(CTEF) is proposed for saving energy and ensuring network load balancing, while considering the link quality, packet loss rate, etc. In CTEF, the average energy of the network is accurately predicted per round(the lifetime of the network is denoted by rounds) in terms of the difference between the ideal and actual average residual energy using central limit theorem and normal distribution mechanism, simultaneously. On this basis, cluster heads are selected by cost function(including the energy, link quality and packet loss rate) and their distance.The non-cluster heads are determined to join the cluster through the energy, distance and link quality. Furthermore, several noncluster heads in each cluster are chosen as the relay nodes for transmitting data through multi-hop communication to decrease the load of each cluster-head and prolong the lifetime of the network. The simulation results show the efficiency of CTEF. Compared with low-energy adaptive clustering hierarchy(LEACH), energy dissipation forecast and clustering management(EDFCM) and efficient and dynamic clustering scheme(EDCS)protocols, CTEF has longer network lifetime and receives more data packets at base station. | Zhen Hong Rui Wang Xile Li | 2016 | IEEE/CAA Journal of Automatica Sinica2016，3，1： | 6 |
| 11 | Human amniotic epithelial cell feeder layers maintain mouse embryonic stem cell pluripotency via epigenetic regulation of the c-Myc promoter显示文摘老鼠胚胎的干细胞(转换字符) 在老鼠的 feeder 层上典型地是有教养的胚胎的成纤维细胞(MEF ) ,与白血病,禁止的因素(LIF ) 增加了处于一个无差别的状态维持他们。我们以前证明了人的羊膜的上皮的房间(hAECs ) 能被用作 feeder 房间维持老鼠转换字符 pluripotency,但是为这的机制是未知的。在现在的学习,我们发现那 CpG 5 c-Myc 基因仍然是的岛在在 hAECs 上有教养的老鼠转换字符的 hypomethylated。另外,在 c-Myc 基因倡导者 histone H3 的 acetylation 和 histone H3K4 的 trimethylation 铺平比在在 MEF 上有教养的 ES 房间的那些在在 hAECs 上有教养的 ES 房间是更高的。这些数据建议 hAECs 能经由 c-Myc 的 epigenetic 修正改变鼠标转换字符基因表示,提供为处于一个无差别的状态的转换字符的导致 hAEC 的维护的可能的机制。 | Te Liu Weiwei Cheng Tianjin Liu Lihe Guo Qin Huang Lizhen Jiang Xiling Du Fuhui Xu Zhixue Liu Dongmei Lai | 2010 | Acta Biochimica et Biophysica Sinica2010，42，2： | 6 |
| 12 | Screening and evaluation of reliable traits of upland cotton(Gossypium hirsutum L.)genotypes for salt tolerance at the seedling growth stage显示文摘Background:Salt stress significantly inhibits the growth,development,and productivity of cotton because of osmotic,ionic,and oxidative stresses.Therefore,the screening and development of salt tolerant cotton cultivars is a key issue towards sustainable agriculture.This study subjected 11 upland cotton genotypes at the seedling growth stage to five different salt concentrations and evaluated their salt tolerance and reliable traits.Results:Several morpho-physiological traits were measured after 10 days of salinity treatment and the salt tolerance performance varied significantly among the tested cotton genotypes.The optimal Na Cl concentration for the evaluation of salt tolerance was 200 mmol·L-1.Membership function value and salt tolerance index were used to identify the most consistent salt tolerance traits.Leaf relative water content and photosynthesis were identified as reliable indicators for salt tolerance at the seedling stage.All considered traits related to salt tolerance indices were significantly and positively correlated with each other except for malondialdehyde.Cluster heat map analysis based on the morpho-physiological salt tolerance-indices clearly discriminated the 11 cotton genotypes into three different salt tolerance clusters.Cluster I represented the salt-tolerant genotypes(Z9807,Z0228,and Z7526)whereas clusters II(Z0710,Z7514,Z1910,and Z7516)and III(Z0102,Z7780,Z9648,and Z9612)represented moderately salttolerant and salt-sensitive genotypes,respectively.Conclusions:A hydroponic screening system was established.Leaf relative water content and photosynthesis were identified as two reliable traits that adequately represented the salt tolerance of cotton genotypes at the seedling growth stage.Furthermore,three salt-tolerant genotypes were identified,which might be used as genetic resources for the salt-tolerance breeding of cotton. | SIKDER Ripon Kumar WANG Xiangru JIN Dingsha ZHANG Hengheng GUI Huiping DONG Qiang PANG Nianchang ZHANG Xiling SONG Meizhen | 2020 | Journal of Cotton Research2020，3，2： | 5 |
| 13 | Isotopic Geochronological Evidence for the Caledonian Xiongdian Eclogite in the Northwestern Dabie Mountains,China显示文摘A typical HP/MT (high pressure/medium temperature) eclogite from Xiongdian, northwestern Dabie Mountains, has been geochronologically studied using the single-zircon U-Pb, 40Ar-39Ar and Sm-Nd methods. Prismatic zircons occurring as inclusions within garnets define a minimum crystallization age of 399.5±1.6 Ma. 40Ar-39Ar dating on amphibole gives a plateau age.of 399.2 ± 4 Ma, which is interpreted as a retrogression age of amphibolite facies. This integrated study enables us to conclude that the age of high-pressure metamorphism is older than 399.5 ± 1.6 Ma, suggesting Caledonian collision between the North China and Yangtze plates. Round zircon within the aggregate of quartz and muscovite gives a concordant age of 301± 2 Ma, reflecting a later retrogression event. An age profile of post-eclogite metamorphism is documented, including amphibolite facies metamorphism at 399.2 Ma shortly after eclogitization and later retrogressive metamorphism at 301 Ma. Sm-Nd mineral isochron of garnet+omphacite | Jian PingYichang Institute of Geology and Mineral Resources. CAGS, Yichang City,Hubei Province 443003Yang Weiran China University of Geosciences, Wuhan, HubeiLi Zhichang Yichang Institute of Geology and Mineral Resources, CAGS, Yichang, HubeiZhou Huifang Tianjin Instutite of Geology and Mineral Resources, CAGS, Tianjin Zhu Xiling | 1997 | Acta Geologica Sinica(English Edition)1997，71，4： | 4 |
| 14 | Corrections for downhole NMR logging显示文摘Nuclear magnetic resonance logging (NMR) is an open well logging method. Drilling mud resistivity, formation resistivity and sodium ions influence its radio frequency (RF) field strength and NMR logging signals. Research on these effects can provide an important basis for NMR logging data acquisition and interpretation. Three models, water-based drilling mud-water bearing formation, water-based drilling mud-oil bearing formation, oil-based drilling mud-water bearing formation, were studied by finite element method numerical simulation. The influences of drilling mud resistivity and formation resistivity on the NMR logging tool RF field and the influences of sodium ions on the NMR logging signals were simulated numerically. On the basis of analysis, RF field correction and sodium ion correction formulae were proposed and their application range was also discussed. The results indicate that when drilling mud resistivity and formation resistivity are 0.02 Ω·m and 0.2 Ω·m respectively, the attenuation index of centric NMR logging tool is 8.9% and 9.47% respectively. The RF field of an eccentric NMR logging tool is affected mainly by formation resistivity. When formation resistivity is 0.1 Ω·m, the attenuation index is 17.5%. For centric NMR logging tools, the signals coming from sodium ions can be up to 31.8% of total signal. Suggestions are proposed for further research into NMR logging tool correction method and response characteristics. | Hu Haitao Xiao Lizhi Wu Xiling | 2012 | Petroleum Science2012，9，1： | 4 |
| 15 | Hierarchical Feature-Based Detection Method for SAR Targets Under Complex Environment显示文摘A reliable target detection method for Synthetic aperture radar(SAR)images is needed urgently with the wide application of SAR systems.The performance of conventional detection algorithms,such as Constant false alarm rate(CFAR),degrade significantly in low SCR or complex regions while the Human visual system(HVS)can identify targets of interest without knowing characteristics of the background even in complicated environment.The combination of HVS with the SAR-ATR system may effectively achieve real-time multi-target detection in complex occlusion scenes.A new effective target detection algorithm is put forward using hierarchical characteristics of targets.Inspired by different roles of the retina and visual cortex in the HVS,this detection algorithm is divided into coarse detection and fine detection stage.Two kinds of features based on the correlation between target features and suspicious targets,namely overall feature and refined feature,are used in these two stages respectively to extract real targets.Experimental results verify its correctness and effectiveness in complex environment. | GAO Fei MA Fei LUO Xiling WANG Jun SUN Jinping | 2017 | Chinese Journal of Electronics2017，26，3： | 4 |
| 16 | Severe human infection with a novel avian-origin influenza A(H7N4) virus显示文摘Human infections with influenza H7 subtypes, such as H7N9, have raised concerns worldwide. Here, we report a human infection with a novel influenza A(H7N4) virus. A 68 years-old woman with cardiovascular and cholecystic comorbidities developed rapidly progressed pneumonia with influenza-like-illness as initial symptom, recovered after 23 days-hospitalization including 8 days in ICU. Laboratory indicators for liver and blood coagulation dysfunction were observed. Oseltamivir phosphate, glucocorticoids and antibiotics were jointly implemented, with nasal catheterization of oxygen inhalation for this patient.We obtained the medical records and collected serial respiratory and blood specimens from her. We collected throat, cloacal and/or feces samples of poultry and wild birds from the patient's backyard, neighborhood, local live poultry markets(LPMs) and the nearest lake. All close contacts of the patient were followed up and sampled with throat swabs and sera. Influenza viruses and other respiratory pathogens were tested by real-time RT-PCR, viral culturing and/or sequencing for human respiratory and bird samples. Micro-neutralizing assay was performed for sera. A novel reassortant wild bird-origin H7N4 virus is identified from the patient and her backyard poultry(chickens and ducks) by sequencing, which is distinct from previously-reported avian H7N4 and H7N9 viruses. At least four folds increase of neutralizing antibodies to H7N4 was detected in her convalescent sera. No samples from close contacts, wild birds or other poultry were tested positive for H7N4 by real-time RT-PCR. | Xiang Huo Lun-biao Cui Cong Chen Dayan Wang Xian Qi Ming-hao Zhou Xiling Guo Fengming Wang William J. Liu Weirong Kong Daxin Ni Ying Chi Yiyue Ge Haodi Huang Feifei Hu Chao Li Xiang Zhao Ruiqi Ren Chang-jun Bao George F. Gao Feng-Cai Zhu | 2018 | Science Bulletin2018，63，16： | 4 |
| 17 | Fast hydrogenation kinetics of acridine as a candidate of liquid organic hydrogen carrier family with high capacity显示文摘Hydrogen has been deemed as one of the most efficient energy carriers for a broad variety of industrial applications[1,2].Large-scale,low-cost hydrogen production,safe storage and delivery represent a tremendous technological challenge and have become a subject of intense research and development activities in the past few decades[3–5]. | Ming Yang Xile Xing Ting Zhu Xuedi Chen Yuan Dong Hansong Cheng | 2020 | Journal of Energy Chemistry2020，29，2： | 4 |
| 18 | Molecular basis of heading date control in rice显示文摘Flowering time is of great significance for crop reproduction,yield,and regional adaptability,which is intricately regulated by various environmental cues and endogenous signals.Genetic approaches in Arabidopsis have revealed the elaborate underlying mechanisms of sensing the dynamic change of photoperiod via a coincidence between light signaling and circadian clock,the cellular time keeping system,to precisely control photoperiodic flowering time,and many other signaling pathways including internal hormones and external temperature cues.Extensive studies in rice(Oryza sativa.),one of the short-day plants(SDP),have uncovered the multiple major genetic components in regulating heading date,and revealed the underlying mechanisms for regulating heading date.Here we summarize the current progresses on the molecular basis for rice heading date control,especially focusing on the integration mechanism between photoperiod and circadian clock,and epigenetic regulation and heading procedures in response to abiotic stresses. | Hua Wei Xiling Wang Hang Xu Lei Wang | 2020 | aBIOTECH2020，1，4： | 3 |
| 19 | Flow imaging method of electromagnetic measurement in well logging显示文摘Multiphase flow in an oil well is a dynamic phenomenon of inhomogeneous medium,which should be studied in a nonlinear way. This paper presents an electromagnetic measurement method based on the electrical property differences between oil,gas and water to scan,inverse and show the distribution and condition of multiphase flow. Both numerical simulation and physical experiments have proved that clear images could be obtained by this way. | WU XiLing,WANG XiaoXing,ZHAO YanWei & YANG Mei School of Resource and Information Technology,China University of Petroleum,Beijing 102249,China | 2008 | Science China Earth Sciences2008，51，S2： | 3 |
| 20 | Flow pattern identification in oil wells by electromagnetic image logging显示文摘Petroleum production logging needs to determine the interpretation models first and flow pattern identification is the foundation, but traditional flow pattern identification methods have some limitations. In this paper, a new method of flow pattern identification in oil wells by electromagnetic image logging is proposed. First, the characteristics of gas-water and oil-water flow patterns in horizontal and vertical wellbores are picked up. Then, the continuous variation of the two phase flow pattern in the vertical and horizontal pipe space is discretized into continuous fluid distribution models in the pipeline section. Second, the electromagnetic flow image measurement responses of all the eight fluid distribution models are simulated and the characteristic vector of each response is analyzed in order to distinguish the fluid distribution models. Third, the time domain changes of the fluid distribution models in the pipeline section are used to identify the flow pattern. Finally, flow simulation experiments using electromagnetic flow image logging are operated and the experimental and simulated data are compared. The results show that the method can be used for flow pattern identification of actual electromagnetic image logging data. | Liu Zaibin Wu Xiling | 2012 | Petroleum Science2012，9，3： | 3 |
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