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43篇 您的检索式:作者名="Chunlan LI"
    题名 作者 年代 出处 被引量
1Discrimination of the rare medicinal plant Dendrobium officinale based on naringenin, bibenzyl, and polysaccharides显示文摘The aim of this study was to establish a method for discriminating Dendrobium officinale from four of its close relatives Dendrobium chrysanthum, Dendrobium crystallinum, Dendrobium aphyllum and Dendrobium devonianum based on chemical composition analysis. We analyzed 62 samples of 24 Dendrobium species. High performance liquid chromatography analysis confirmed that the four low molecular weight compounds 4′,5,7-trihydroxyflavanone (naringenin), 3,4-dihydroxy-4′,5-dime- thoxybibenzyl (DDB-2), 3′,4-dihydroxy-3,5′-dimethoxybibenzyl (gigantol), and 4,4′-dihydroxy-3,3′,5-trimethoxybibenzyl (moscatilin), were common in the genus. The phenol-sulfuric acid method was used to quantify polysaccharides, and the monosaccharide composition of the polysaccharides was determined by gas chromatography. Stepwise discriminant analysis was used to differentiate among the five closely related species based on the chemical composition analysis. This proved to be a simple and accurate approach for discriminating among these species. The results also showed that the polysaccharide content, the amounts of the four low molecular weight compounds, and the mannose to glucose ratio, were important factors for species discriminant. Therefore, we propose that a chemical analysis based on quantification of naringenin, bibenzyl, and polysaccharides is effective for identifying D. officinale.CHEN XiaoMe WANG FangFei WANG YunQiang LI XueLan WANG AiRong WANG ChunLan GUO ShunXing 2012Science China(Life Sciences)2012,55,12:25
2Recent advances in organic-based materials for resistive memory applications显示文摘With the rapid development of data-driven human interaction,advanced datastorage technologies with lower power consumption,larger storage capacity,faster switching speed,and higher integration density have become the goals of future memory electronics.Nevertheless,the physical limitations of conventional Si-based binary storage systems lag far behind the ultrahigh-density requirements of post-Moore information storage.In this regard,the pursuit of alternatives and/or supplements to the existing storage technology has come to the forefront.Recently,organic-based resistive memory materials have emerged as promising candidates for next-generation information storage applications,which provide new possibilities of realizing high-performance organic electronics.Herein,the memory device structure,switching types,mechanisms,and recent advances in organic resistive memory materials are reviewed.In particular,their potential of fulfilling multilevel storage is summarized.Besides,the present challenges and future prospects confronted by organic resistive memory materials and devices are discussed.Yang Li Qingyun Qian Xiaolin Zhu Yujia Li Mayue Zhang Jingni Li Chunlan Ma Hua Li Jianmei Lu Qichun Zhang 2020InfoMat2020,2,6:7
3ICESat/GLAS-derived changes in the water level of Hulun Lake, Inner Mongolia, from 2003 to 2009显示文摘Hulun Lake is the largest freshwater lake innorthern Inner Mongolia and even minor changes in itslevel may have major effects on the ecology of the lake andthe surrounding area. In this study, we used high-precisionelevation data for the interval from 2003-2009 measuredby the Geoscience Laser Altimetry System (GLAS) onboard the Ice, Cloud, and land Elevation Satellite (ICESat)to assess annual and seasonal water level variations ofHulun Lake. The altimetry data of 32 satellite tracks wereprocessed using the RANdom SAmple Consensus algo-rithm (RANSAC) to eliminate elevation outliers, andsubsequently the Normalized Difference Water Index(NDWI) was used to delineate the area of the lake. From2003-2009, the shoreline of Hulun Lake retreatedwestwards, which was especially notable in the southernpart of the lake. There was only a small decrease in waterlevel, from 530.72 m to 529.22 m during 2003-2009, anaverage rate of 0.08 m/yr. The area of the lake decreased ata rate of 49.52 km^2/yr, which was mainly the result of theshallow bathymetry in the southern part of the basin. Thedecrease in area was initially rapid, then much slower, andfinally rapid again. Generally, the lake extent and waterlevel decreased due to higher temperatures, intenseevaporation, low precipitation, and decreasing runoff.And their fluctuations were caused by a decrease in intra-annual temperature, evaporation, and a slight increase inprecipitation. Overall, a combination of factors related toclimate change were responsible for the variations of thewater level of Hulun Lake during the study interval. Theresults improve our understanding of the impact of climatechange on Hulun Lake and may facilitate the formulationof response strategies.Chunlan LI Jun WANG Richa HU Shan YIN Yuhai BAO Yuwei LI 2018Frontiers of Earth Science2018,12,2:3
4The Changes in Guilin Paddy Soil Organic Matter and Rice Yield under Long-Term Fertilization显示文摘Rational fertilization is an important measure to increase crop yield and soil fertility. Through analysis,this paper aims to master the change characteristics of soil organic matter and rice yield under different fertilizer treatments,in order to provide an important reference for the sustainable use of soil and effective fertilization. Long-term( 19 years) rice crop rotation experiments in waterloggogenic paddy soil were conducted to investigate the change trend of crop grain yield and soil organic matter with time,reveal the dynamic characteristics and relationship between main fertility factors and crop yields using comparative analysis at three sites with conventional fertilization and non-fertilization in Guilin. The results showed that compared with previous years,the rice yield increased by 53% under the fertilization treatment and degreased by 66% under the control. Over the years,the average soil organic matter( SOM) content under fertilization treatment was 23% higher than under CK treatment. This indicates that chemical fertilizer and organic manure application can increase the rice yield and soil organic matter,and high rice yield can be attributed to the SOM increase.Qiuliang YU Zheng TANG Zhongfang LI Chunlan CHEN Xiaoxian TANG Yanli LIN 2016Asian Agricultural Research2016,8,3:2
5Detection of QTL and QTN and candidate genes for oil content in soybean using a combination of four-way-RIL and germplasm populations显示文摘Soybean is a source of edible oil for humans and provides a third of the vegetable oil consumed worldwide.Increasing seed oil content in seeds is thus a key objective in soybean breeding.In the present study,a four-way recombinant inbred line(FW-RIL)population comprising 144 lines,planted in 10 environments,and a germplasm panel of 455 accessions,planted in two environments,were used to collect oil-content phenotypes.First,59 quantitative trait loci(QTL)were detected in the FW-RIL population by inclusive complete interval mapping on a linkage map consisting of 2232 single-nucleotide polymorphism(SNP)markers.Also in the FW-RILs,44 quantitative trait nucleotides(QTNs)were detected by association analysis using 109,676 SNP markers and fivemethods of multi-locus genome-wide association study.Second,77 QTN were detected by association analysis in the germplasm panel using 63,306 markers.Comparison of the QTL and QTN suggested four QTN controlling oil content.Pathway analysis was performed on genes in attenuation regions of these four QTN,and two candidate genes involved in the synthesis or metabolism of soybean oil were identified.These findings provide useful information about the genetics of oil content and may contribute to its genetic improvement by marker-assisted selection.Xiyu Li Kaixin Zhang Xu Sun Shanshan Huang Jiajing Wang Chang Yang Mahfishan Siyal Chao Wang Chunlan Guo Xiping Hu Wen-Xia Li Hailong Ning 2020The Crop Journal2020,8,5:2
6Effects of Coupling Treatment of Acid and Aluminum under Soilless Culture on Water Content of Ginkgo biloba L.显示文摘In this experiment,two-factor 7-level uniform design scheme was applied.Separate treatment of each factor was performed for single effect test.Then,it analyzed the effects of acid and aluminum stress under soilless culture on the water content of plant during the growth of Ginkgo biloba L.seedlings,so as to provide a theoretical basis for studying the connection between plant water and physiological stress.The results showed that the water content of G.biloba plants declined with the decrease of p H,but the water content of G.biloba plants declined with the increase in the concentration of aluminum treatment,indicating that the stronger the acid and aluminum stress,the lower the water content of the plants,affecting the normal absorption of water content of G.biloba plants,accordingly leading to lack of water.According to the analysis of the degree of influence on the water content,p H is the first factor influencing the growth of G.biloba plants.If p H is lower than 3.5,G.biloba plants will not growth,while p H is higher than 5.0,aluminum has no significant effect on the water content of G.biloba plants.In conclusion,the water content of G.biloba plants can be used as an essential indicator for acid and aluminum stress.Qiuliang YU Huilan SU Chunlan CHEN Zhongfang LI 2018Asian Agricultural Research2018,10,7:1
7Tanshinone IIA inhibits the growth, attenuates the stemness and inducesthe apoptosis of human glioma stem cells显示文摘Liuqi Yang Huijie Guo Lihua Dong Li Wang Chunlan Liu Xiujie Wang 2014Oncology Reports2014,,3:1
8A robust graphene oxide memristor enabled by organic pyridinium intercalation for artificial biosynapse application显示文摘Graphene oxide(GO)-based memristors offer the promise of low cost,eco-friendliness,and mechanical flexibility,making them attractive candidates for outstanding flexible electronic devices.However,their resistive transitions often display abrupt change rather than bidirectional progressive tuning,which largely limits their applications for biological synapse emulation and neuromorphic computing.Here,a memristor with a novel layered structure of GO/pyridinium/GO is presented with tunable bidirectional feature.The inserted organic pyridinium intercalation succeeds in serving as a satisfactory buffer layer to intrinsically control the formation of conductive filaments during device operation,leading to progressive conductance regulation.Thus,the essential synaptic behaviors including analog memory characteristics,excitatory postsynaptic current,paired pulse facilitation,prepulse inhibition,spike-timing-dependent plasticity,and spike-rate-dependent plasticity are replicated.The emulation of brain-like“learning-forgetting-relearning”process is also implemented.Additionally,the instant responses of the memristor can be stimulated by low operational voltages and short pulse widths.This study paves one way for GO-based memristors to actuate appealing features such as bidirectional tuning and fast speed switching that are desirable for the development of bio-inspired neuromorphic systems.Yang Li Songtao Ling Ruiyu He Cheng Zhang Yue Dong Chunlan Ma Yucheng Jiang Ju Gao Jinghui He Qichun Zhang 2023Nano Research2023,16,8:1
9Effect of Mo addition on the microstructure and mechanical properties of ultra-free grade TiC- TiN-WC-Mo2C-Co cermets显示文摘Li Yan Liu Ning Zhang Xiaobo Rong Chunlan 2008International Journal of Refractory Metals & Hard Materials2008,26,:1
10Effect of WC content on the microstructure and mechanical properties of (Ti,W) (C,N)-Co cermets 显示文摘Li Yart Liu Ning Zhang Xiaobo Rong Chunlan 2008International Journal of Refractory Metals & Hard Materials2008,26,:1
11Manganese uptake and interactions with cadmium in the hyperaccumulator— Phytolacca Americana L.显示文摘Kejian Peng Chunling Luo Wuxin You Chunlan Lian Xiangdong Li Zhenguo Shen 2007Journal of Hazardous Materials2007,,1:1
12Effect of WC content on the microstructure and mechanical properties of (Ti,W)(C, N)–Co cermets显示文摘Yan Li Ning Liu Xiaobo Zhang Chunlan Rong 2007International Journal of Refractory Metals and Hard Materials2007,,1:1
13Application of virtual instrument in time delay signal analysis显示文摘Li Mingjiang Wang Chunlan Cheng Zai 2011Applied Mechanics and Materials2011,4041,:1
14Quantum dots loaded nanogels for low cytotoxicity, pH-sensitive fluorescence, cell imaging and drug delivery显示文摘Zhenshun Li Wei Xu Yuntao Wang Bakht Ramin Shah Chunlan Zhang Yijie Chen Yan Li Bin Li 2015Carbohydrate Polymers2015,,:1
15Lowvelocity non-linear flow in ultra-low permeabilityreservoir 显示文摘ZENG Baoquan CHENG Linsong LI Chunlan 2011Journal of Petroleum Science andEngineering2011,80,1:1
16Low velocity non-linear flow in ul-tra-low permeability reservoir显示文摘Baoquan Zeng Linsong Cheng Chunlan Li 0,,01:1
17Three new bibenzyl derivatives from Dendrobium candidum显示文摘LI Yan WANG Chunlan GUO Shunxing 2009Chem Pharm Bull2009,57,2:1
18Four new bibenzyl derivatives from Dendrobium candidum显示文摘LI Yan WANG Chunlan WANG Yajun 2009Chem Pharm Bull2009,57,9:1
19Three from Dendrobium candidum 显示文摘LI Yan WANG Chunlan new bibenzyl derivatives GUO Shunxing 2009Chem Pharm Bull2009,57,2:1
20Four new bibenzyl derivatives from Dendrobium candidum 显示文摘LI Yan WANG Chunlan WANG Yajun 2009Chem Pharm Bull2009,57,9:1
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