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63篇 您的检索式:作者名="Haigang Li"
    题名 作者 年代 出处 被引量
1Combined Applications of Nitrogen and Phosphorus Fertilizers with Manure Increase Maize Yield and Nutrient Uptake via Stimulating Root Growth in a Long-Term Experiment显示文摘Imbalanced application of nitrogen(N) and phosphorus(P) fertilizers can result in reduced crop yield,low nutrient use efficiency,and high loss of nutrients and soil nitrate nitrogen(NO_3^--N) accumulation decreases when N is applied with P and/or manure;however,the effect of applications of N with P and/or manure on root growth and distribution in the soil profile is not fully understood.The aim of this study was to investigate the combined effects of different N and P fertilizer application rates with or without manure on maize(Zea mays L.) yield,N uptake,root growth,apparent N surplus,Olsen-P concentration,and mineral N(N_(min)) accumulation in a fluvo-aquic calcareous soil from a long-term(28-year) experiment.The experiment comprised twelve combinations of chemical N and P fertilizers,either with or without chicken manure,as treatments in four replicates.The yield of maize grain was 82%higher,the N uptake 100%higher,and the N_(min) accumulation 39%lower in the treatments with combined N and P in comparison to N fertilizer only.The maize root length density in the 30-60 cm layer was three times greater in the treatments with N and P fertilizers than with N fertilizer only.Manure addition increased maize yield by 50%and N uptake by 43%,and reduced N_(min)(mostly NO_3^--N) accumulation in the soil by 46%.The long-term application of manure and P fertilizer resulted in significant increases in soil Olsen-P concentration when no N fertilizer was applied.Manure application reduced the apparent N surplus for all treatments.These results suggest that combined N and P fertilizer applications could enhance maize grain yield and nutrient uptake via stimulating root growth,leading to reduced accumulation of potentially leachable NO_3^--N in soil,and manure application was a practical way to improve degraded soils in China and the rest of the world.WEN Zhihui SHEN Jianbo Martin BLACKWELL LI Haigang ZHAO Bingqiang YUAN Huimin 2016Pedosphere2016,26,1:29
2Inhibition of FOXO3a/BIM signaling pathway contributes to the protective effect of salvianolic acid A against cerebral ischemia/reperfusion injury显示文摘Salvianolic acid A(SalA) is an effective compound extracted from traditional Chinese medicine Salvia miltiorrhiza Bunge. The Forkhead box O3a(FOXO3a) signaling pathway plays crucial roles in the modulation of ischemia-induced cell apoptosis. However, no information about the regulatory effect of SalA on FoxO3a is available. To explore the anti-cerebral ischemia effect and clarify the therapeutic mechanism of SalA, SH-SY5Y cells and Sprague–Dawley rats were applied, which were exposed to oxygen glucose deprivation/reoxygenation(OGD/R) and middle cerebral artery occlusion/reperfusion(MCAO/R) injuries, respectively. The involved pathway was identified using the specific inhibitor LY294002. Results showed that SalA concentration-dependently inhibited OGD/R injury triggered cell viability loss. SalA reduced cerebral infarction, lowered brain edema, improved neurological function, and inhibited neuron apoptosis in MCAO/R rats, which were attenuated by the treatment of phosphatidylinositol-4,5-bisphosphate 3-kinase(PI3K) specific inhibitor LY294002. SalA time-and concentration-dependently upregulated the phosphorylation levels of protein kinase B(AKT) and its downstream protein FOXO3a. Moreover, the nuclear translocation of FOXO3a was inhibited by SalA both in vivo and in vitro, which was also reversed by LY294002. The above results indicated that SalA fought against ischemia/reperfusion damage at least partially via the AKT/FOXO3a/BIM pathway.Junke Song Wen Zhang Jinhua Wang Haiguang Yang Qimeng Zhou Haigang Wang Li Li Guanhua Du 2019Acta Pharmaceutica Sinica B2019,9,3:20
3An overview of the use of plastic-film mulching in China to increase crop yield and water-use efficiency显示文摘Since 1990,crop yields have stagnated in many parts of the world,posing a significant challenge to global food security[1].As such;innovative solutions are needed to increase the resource-use efficiency of cropping systems to produce more grains per unit area.Dongbao Sun Haigang Li Enli Wang Wenqing He Weiping Hao Changrong Yan Yuzhong Li Xurong Mei Yanqing Zhang Zhanxiang Sun Zhikuan Jia Huaiping Zhou Tinglu Fan Xucheng Zhang Qin Liu Fengju Wang Chaochun Zhang Jianbo Shen Qingsuo Wang Fusuo Zhang 2020National Science Review2020,7,10:19
4Pathogen-inducible OsMPKKI 0.2-OsMPK6 cascade phosphorylates the Raf-like kinase OsEDRI and inhibits its scaffold function to promote rice disease resistance显示文摘Mitogen-activated protein kinase(MAPK)cascades regulate a myriad of plant biological processes,including disease resistance.Plant genomes encode a large number of MAPK kinase kinases(MAPKKKs)that can be divided into two subfamilies,namely MEKK-like kinases and Raf-like kinases.Thus far,the func-tions of MEKK-like MAPKKKs have been relatively well characterized,but the roles of Raf-like MAPKKKs in.plant MAPK cascades remain less understood.Here,we report the role of OsEDR1,a Raf-like MAPKKK,in the regulation of the MAPK cascade in rice response tp the bacterial pathogen Xanthomonas oryzae pv.oryzicola(Xoc).We found that OsEDR1 inhibits OsMPKK10.2(a MAPK kinase)activity through physical interaction.Upon Xoc infection,OsMPKK10.2 is phosphorylated at S304 to activate OsMPK6(a MAPK).Interestingly,activated OsMPK6 phosphorylates OsEDR1 at S861,which destabilizes OsEDR1 and thus releases the inhibition of OsMPKK10.2,leading to increased OsMPKK10.2 activity and enhanced resistance of rice plants to Xoc.Taken together,these results provide new insights into the functions of Raf-like ki-nases in the regulation of the MAPK cascade in plant immunity.Haigang Ma Juan Li Ling Ma Peilun Wang Yuan Xue Ping Yin Jinghua Xiao Shiping Wang 2021Molecular Plant2021,14,4:9
5Influence of the intensity and loading time of direct current electric field on the directional migration of rat bone marrow mesenchymal stem cells显示文摘Exogenic 电场能有效地加速骨头愈合并且向受伤区域通过骨头髓的提高的迁居改变间充质的干细胞(BMSC ) 。这研究试图决定下列:(1 ) 在到一个直接当前的电场(DCEF ) 的暴露之上的老鼠 BMSC (rBMSC ) 移植的方向,(2 ) 最佳的 DCEF 紧张和持续时间,并且(3 ) 在由 DCEF 导致了的 rBMSC 移植的 SDF-1/CXCR4 轴的可能的规章的角色。显示出的结果 rBMSCs 移居了到 DCEF 的积极电极,并且为 4 h 的 200 mV/mm 的 DCEF 被发现在提高 rBMSC 移植最佳。这 DCEF 力量和持续时间另外 upregulated osteoblastic 基因,包括的高山和 OCN 的表示,和 upregulated 高山和 Runx2 蛋白质的表示。而且当 CXCR4 被禁止时, rBMSC 移植部分由于 DCEF 被堵住。这些调查结果显示 DCEF 能有效地导致 rBMSC 移植。因为它支持 rBMSC 移植,增长,和 osteogenic 区别的能力,为 4 h 的 200 mV/mm 的 DCEF 被推荐。表明小径的 SDF-1/CXCR4 可以在调整 rBMSCs 的导致 DCEF 的迁居起一个重要作用。Xiaoyu Wang Yuxuan Gao Haigang Shi Na Liu Wei Zhang Hongbo Li 2016Frontiers of Medicine2016,10,3:7
6An energy-conserving two-way coupled mode model for underwater acoustic propagation显示文摘In order to avoid the energy non-conservation in two-way sound field calculations,which results from certain approximation of non-horizontal boundary,an energy-conserving twoway coupled mode propagation model is developed.During the derivation of this model,the non-horizontal boundary condition is treated strictly instead of making an approximation.The coupling equations,which are easy to numerical implementation,are derived from the equation of motion and the equation of continuity.Moreover,the validity of this model is illustrated with several numerical examples of different bottom parameters and the equation of energy conservation.It is shown that a boundary correction is introduced by the strict formulizing of the boundary condition in this model.This boundary correction guarantees the coupling coefficients being symmetrical and makes the sound fields satisfy the energy conservation.Thus,the energy-conserving coupled model is able to handle non-horizontal boundaries adequately,and the two-way sound fields in a non-horizontal stratified media can be calculated exactly by this model.MO Yaxiao PIAO Shengchun ZHANG Haigang LI Li 2016Chinese Journal of Acoustics2016,35,2:5
7Optical vortex copier and regenerator in the Fourier domain显示文摘The generation and manipulation of optical vortices are of fundamental importance in a variety of promising applications. Here, we develop a nonlinear optical paradigm to implement self-and cross-convolution of optical vortex arrays, demonstrating the features of a vortex copier and regenerator. We use a phase-only spatial light modulator to prepare the 1064 nm invisible fundamental light to carry special optical vortex arrays and use a potassium titanyl phosphate crystal to perform type Ⅱ second-harmonic generation in the Fourier domain to achieve 532 nm visible structured vortices. Based on pure cross-convolution, we succeed in copying arbitrary-order single vortices as well as their superposition states onto a prearranged array of fundamental Gaussian spots. Also, based on the simultaneous effect of self-and cross-convolutions, we can expand the initial vortex lattices to regenerate more vortices carrying various higher topological charges. Our presented method of realizing an optical vortex copier and regenerator could find direct applications in optical manipulation, optical imaging, optical communication, and quantum information processing with structured vortex arrays.XIAODONG QIU FANGSHU LI HAIGANG LIU XIANFENG CHEN LIXIANG CHEN 2018Photonics Research2018,6,6:4
8THE SCHEME FOR THE DATABASE BUILDING AND UPDATING OF 1∶10 000 DIGITAL ELEVATION MODELS显示文摘The National Bureau of Surveying and Mapping of China has planned to speed up the development of spatial data infrastructure (SDI) in the coming few years.This SDI consists of four types of digital products,i.e.,digital orthophotos,digital elevation models, digital line graphs and digital raster graphs.For the DEM,a scheme for the database building and updating of 1∶10 000 digital elevation models has been proposed and some experimental tests have also been accomplished.This paper describes the theoretical (and/or technical) background and reports some of the experimental results to support the scheme.Various aspects of the scheme such as accuracy,data sources,data sampling,spatial resolution,terrain modeling,data organization,etc are discussed.ZHU Qing LI Zhilin GONG Jianya SUI Haigang 2000Geo-Spatial Information Science2000,3,2:4
9Dual waveband generator of perfect vector beams显示文摘Recently, the perfect vector(PV) beam has sparked considerable interest because its radius is independent of the topological charge(TC), which has demonstrated special capabilities in optical manipulation, microscopy imaging, and laser micromachining. Previous research about the generation and manipulation of such PV beams only focuses on the linear optical fields. Therefore, the generation of nonlinear PV beams is still lacking. Here, we propose a dual waveband generator to simultaneously generate the PV beams in linear and nonlinear wavebands.In our experiment, PV beams with different polarization states are realized. It is proved that the polarization states of the generated PV beams can be flexibly adjusted by changing the axis direction of a half wave plate. The experimental results show that the radii of the generated PV beams are equal and independent of the TCs.With proper alteration of the nonlinear crystals, this approach could be further extended to other nonlinear processes, such as sum-frequency generation and difference-frequency generation.HUI LI HAIGANG LIU XIANFENG CHEN 2019Photonics Research2019,7,11:3
10A Fast Algorithm of Cartographic Sounding Selection显示文摘An effective strategy and framework that adequately integrate the automated and manual processes for fast cartographic sounding selection is presented. The important submarine topographic features are extracted for important soundings selection, and an improved 'influence circle' algorithm is introduced for sounding selection. For automatic configuration of soundings distribution pattern, a special algorithm considering multi factors is employed. A semi automatic method for solving the ambiguous conflicts is described. On the basis of the algorithms and strategies a system named HGIS for fast cartographic sounding selection is developed and applied in Chinese Marine Safety Administration Bureau (CMSAB). The application experiments show that the system is effective and reliable. At last some conclusions and the future work are given.SUI Haigang HUA Li ZHAO Haitao ZHANG Yongli 2005Geo-Spatial Information Science2005,8,4:3
11High expression of trimethylated histone H3 lysine 4 is associated with poor prognosis in hepatocellular carcinoma显示文摘Chuanchao He Junyao Xu Jianlong Zhang Dan Xie Hua Ye Zhiyu Xiao Muyan Cai Kang Xu Yunjie Zeng Haigang Li Jie Wang 2012Human Pathology2012,,9:3
12Circular BANP knockdown inhibits the malignant progression of residual hepatocellular carcinoma after insufficient radiofrequency ablation显示文摘Background:Circular RNAs(circRNAs)are endogenous non-coding RNAs,some of which have pathological roles.The current study aimed to explore the role of circRNA BTG3-associated nuclear protein(circ-BANP)binding with let-7f-5p and its regulation of the toll-like receptor 4(TLR4)/signal transducer and activator of transcription 3(STAT3)signaling pathway in residual hepatocellular carcinoma(HCC)after insufficient radiofrequency ablation(RFA).Methods:Circ-BANP,let-7f-5p,and TLR4 expressions in HCC samples were assessed using reverse transcription-quantitative polymerase chain reaction(RT-qPCR)and Western blotting.Bioinformatics prediction,RNA pull-down assay,and dual luciferase reporter gene assay were used to analyze the relationships among circ-BANP,let-7f-5p,and TLR4.Huh7 cells were used to generate an in vitro model of residual HCC,defined as Huh7-H cells,which were transfected with either a plasmid or the sequence of circ-BANP,let-7f-5p,or TLR4.Expression of circ-BANP,let-7f-5p,and TLR4 mRNA was determined by RT-qPCR.TLR4,STAT3,p-STAT3,vascular endothelial growth factor A,vascular endothelial growth factor receptor-2,and epithelialmesenchymal transformation(EMT)-related factors proteins were determined by Western blotting.Cell proliferation was determined by cell counting kit-8 and 5-Ethynyl-2’-deoxyuridine(EdU)assay and cell migration and invasion by Transwell assay.Animal studies were performed by inducing xenograft tumors in nude mice.Results:Circ-BANP and TLR4 mRNAs were upregulated in HCC tissues(the fold change for circ-BANP was 1.958 and that for TLR4 was 1.736 relative to para-tumors)and expression further increased following insufficient RFA(fold change for circBANP was 2.407 and that of TLR4 was 2.224 relative to para-tumors).Expression of let-7f-5p showed an opposite tendency(fold change for let-7f-5p in HCC tissues was 0.491 and that in tumors after insufficient RFA was 0.300 relative to paratumors).Competitive binding of circ-BANP to let-7f-5p was demonstrated and TLR4 was identified as a target of let-7f-5p(P<0.01).Knockdown of circ-BANP or elevation of let-7f-5p expression inhibited the TLR4/STAT3 signaling pathway,proliferation,invasion,migration,angiogenesis,and EMT in Huh7 and Huh7-H cells(P<0.01).The effects induced by circBANP knockdown were reversed by let-7f-5p inhibition.Overexpression of TLR4 reversed the impact of let-7f-5p upregulation on the cells(P<0.01).Silencing of circ-BANP inhibited the in vivo growth of residual HCC cells after insufficient RFA(P<0.01).Conclusions:Knockdown of circ-BANP upregulated let-7f-5p to inhibit proliferation,migration,and EMT formation in residual HCC remaining after insufficient RFA.Effects occur via regulation of the TLR4/STAT3 signaling pathway.Guoming Li Jian Kong Shuying Dong Haigang Niu Shilun Wu Wenbing Sun 2022Chinese Medical Journal2022,,13:2
13Thermal Energy-Driven Solid-State Molecular Rotation Monitored by Real-Time Emissive Color Switching显示文摘Inspired by nature’s molecular machines,the scientific research on solid-state molecular rotors is of great interest yet remains largely unexplored.Herein,we report a unique example of a thermal energydriven stimuli-responsive solid-state molecular rotor,which features an o-carborane moiety as a rotor that directly transduces the surrounding thermal energy into molecular rotations in the crystalline state.Its rotation is confirmed by X-ray diffraction.Junfeng Li Chenxi Hou Qi Qi Lin Jiao Lanqing Dai Dong Chen Haigang Geng Wen-Yong Lai Wei Huang 2022CCS Chemistry2022,4,8:2
14Strategies for improving fertilizer phosphorus use efficiency in Chinese cropping systems显示文摘A four-year project,entitled'The mechanisms of fraction transformation and high use efficiency of P fertilizer in Chinese cropping systems'commenced in 2017.The project was established to answer three key questions and looked at 17 cropping systems on ten soils.First,we asked what are the dynamics of transformation,fixation and mobilization of P fertilizers in soil-cropping systems?Second,what are the mechanisms of soil-cropmicrobe interactions by which P fertilizer can be efficiently used?Third,how to manipulate the processes of P use in cropping systems?The targets of this project are(1)to explore the mechanisms of P fixation,the pathways of loss of P availability and the threshold of migration of fertilizer P in the field;(2)to uncover mechanisms by which soil legacy P is mobilized through root physiological and morphological processes and through arbuscular mycorrhizal fungi and P-solubilizing bacteria in rhizosphere and hyphosphere;(3)to estimate the biological potential of crops for high efficiency P absorption and use;(4)to innovate new approaches for improving the efficiency of P fertilizers.The outcomes will provide theoretical support for setting standards for limitation of P fertilizer application rate in the main cropping zones of China.Gu FENG Jingping GAI Xionghan FENG Haigang LI Lin ZHANG Keke YI Jialong LV Yiyong ZHU Li TANG Yilin LI 2019Frontiers of Agricultural Science and Engineering2019,6,4:2
15Formation process of akaganeite in the simulated wet-dry cycles atmospheric environment显示文摘In order to clarify the formation mechanism and conditions for akaganeite in long-term exposure,the influence of the former corrosion results on akaganeite formation was investigated by simulated experiments in laboratory.The combination of XRD,FTIR,SEM and EPMA enabled the identification of the rust layer formed on the surface.Accordingly,the nature of the rust layer and the amount of the corrosive species in the rust layer varied with the extension of the exposure.Among them,comparing with the corrosion condition in initial stage,the structure of rust layer after repeated wet-dry cycles was disadvantage for akaganeite formation.Element Cl aggregated at the interface between rust and substrate in the thick part can participate in the formation of akaganeite after the rust layer covered removed.The accumulation effect of salt deposited contributed to akaganeite formation under the condition that salt deposition rate was relatively low.Haigang Xiao Wei Ye Xiaoping Song Yuantai Ma Ying Li 2018Journal of Materials Science & Technology2018,34,8:2
16Genotoxicity evaluation of drinking water sources in human peripheral blood lymphocytes using the comet assay显示文摘在到人的健康的饮用水的有机污染物的潜在的伤害广泛地集中于在世界上;有 genotoxic 物质的越来越多的污染物质被释放进水生环境。水来源样品从南京城市的 7 个不同地区被收集。从饮用水来源的器官的摘录的潜在的 genotoxicity 在人的外部淋巴细胞借助于彗星试金被调查。结果证明从所有水来源样品的所有器官的摘录能在不同层次导致人的外部血淋巴细胞的脱氧核糖核酸损坏。重要差别(P < 0.01 ) 当时,被观察与溶剂控制相比。脱氧核糖核酸损坏随原来的水来源的剂量的增加增加了。脱氧核糖核酸损坏的重要差别在不同饮用水来源被观察,在 100 ×的剂量由多重比较分析出现;脱氧核糖核酸损坏的度由 Hushu 供水系统对待(在镇水平) 是最严肃的,任意的单位(AU ) 然而,是 141.62 ± 6 .96 Shangyuanmen 供水系统的(在城市水平) 仅仅是 109.64 ± 2 .97。分析也表明镇的水来源的 genotoxicity 比城市的高。结果证明彗星试金能成功地被用于监视饮用水来源的节目的 genotoxicity。WU Yulin CHEN Haigang LI Zhaoli SUN Liwei QU Mengmeng LI Mei KONG Zhiming 2008Journal of Environmental Sciences2008,20,4:2
17Expression and significance of matrix metalloproteinase-2 and its tissue inhibitors in esophageal squamous cancinoma显示文摘ZHANG Huizhong ZHANG Hua LI Haigang 2000Acad J SUMS2000,21,5:1
18A New Hy- perchaotic System and the Synchronization Using Active Variable Universe Adaptive Fuzzy Controller显示文摘Baojie Zhang Hongxing Li Haigang Guo 2013Math- ematical Problems in Engineering2013,,2013:1
19Contrasting patterns of accumulation,partitioning,and remobilization of biomass and phosphorus in a maize cultivar显示文摘Maize growth,organ development,and yield formation are highly controlled by the manner in which the plant captures,partition,and remobilizes biomass and phosphorus(P).Better understanding of biomass and P accumulation,partition,and remobilization processes will improve modeling of crop resource use.However,there is still a lack of detailed data to parameterize the modeling of these processes,particula rly for modern maize cultivars.A two-year(2016 and 2017)field experiment with three P fertilization treatments(0(P0),75(P75),and 300(P300)kg P_(2)O_(5)ha^(-1))was conducted on a Fluvo-aquic soil(Quzhou,Hebei province,China)to collect data and quantify key processes for a representative modern maize cultivar(Zhengdan 958)widely grown in China.The proportions of biomass and P partitioned into various maize organs were unaffected by P application rate.Zhengdan 958 showed a much lower leaf-senescence rate than older cultivars,resulting in post-silking leaf photosynthesis being sufficient to meet grain biomass demand.In contrast,50%-85%of leaf P and 15%-50%of stem P accumulated pre-silking were remobilized into grain,in spite of the large proportion of post-silking P uptake.Our results are consistent with the theory that plants use resources according to the priority order of re-allocation from senescence followed by assimilation and uptake,with the re-translocation of reserves last.The results also enabled us to estimate the threshold P concentrations of Zhengdan 958 for modeling crop P demand.The critical leaf P concentration for individual leaves was 0.25%-0.30%,with a corresponding specific leaf P(SLP)of 75-100 mg P m^(-2).The structural P concentration for leaf was 0.01%,corresponding to an SLP of 3.8 mg P m^(-2).The maximum P concentrations of leaves and stems were 0.33%and 0.29%.The residual P concentration for stems was 0.006%.Weina Zhang Haigang Li Junling Zhang Jianbo Shen Hamish Brown Enli Wang 2022The Crop Journal2022,10,1:1
20Phosphorus uptake and rhizosphere properties of intercropped and monocropped maize, faba bean, and white lupin in acidic soil显示文摘Haigang Li Jianbo Shen Fusuo Zhang Petra Marschner Greg Cawthray Zed Rengel 2010Biology and Fertility of Soils2010,,2:1
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