|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Methylmercury and sulfate-reducing bacteria in mangrove sediments from Jiulong River Estuary,China显示文摘Estuaries are important sites for mercury (Hg) methylation,with sulfate-reducing bacteria (SRB) thought to be the main Hg methylators.Distributions of total mercury (THg) and methylmercury (MeHg) in mangrove sediment and sediment core from Jiulong River Estuary Provincial Mangrove Reserve,China were determined and the possible mechanisms of Hg methylation and their controlling factors in mangrove sediments were investigated.Microbiological and geochemical parameters were also determined.Results showed that SRB constitute a small fraction of total bacteria (TB) in both surface sediments and the profile of sediments.The content of THg,MeHg,TB,and SRB were (350±150)ng/g,(0.47±0.11)ng/g,(1.4×10 11±4.1×109)cfu/g dry weight (dw),and (5.0×106±2.7×106)cfu/g dw in surficial sediments,respectively,and (240±24)ng/g,(0.30±0.15)ng/g,(1.9×1011± 4.2×1010)cfu/g dw,and (1.3×106± 2.0×106) cfu/g dw in sediment core,respectively.Results showed that THg,MeHg,TB,MeHg/THg,salinity and total sulfur (TS) increased with depth,but total organic matter (TOM),SRB,and pH decreased with depth.Concentrations of MeHg in sediments showed significant positive correlation with THg,salinity,TS,and MeHg/THg,and significant negative correlation with SRB,TOM,and pH.It was concluded that other microbes,rather than SRB,may also act as main Hg methylators in mangrove sediments. | Hao Wu Zhenhua Ding Yang Liu Jinling Liu Haiyu Yan Jiayong Pan Liuqiang Li Huina Lin Guanghui Lin Haoliang Lu | 2011 | Journal of Environmental Sciences2011，23，1： | 17 |
| 2 | Climate as the dominant control on C3 and C4 plant abundance in the Loess Plateau: Organic carbon isotope evidence from the last glacial-interglacial loess-soil sequences显示文摘Abundance of C3 and C4 photosynthesis plants can be inferred relatively from stable carbon isotopic composition of organic matter in soils. The samples from five sequences of the last glacial-interglacial loess-soil in the Chinese Loess Plateau have been measured for organic carbon isotopic ratios (? 13Corg). The organic carbon isotope data show that relative abundance (or biomass) of C4 plants was increased ca. 40% for each sampling site from the last glacial maximum (LGM) to Holocene optimum, and increased southeastward on the Loess Plateau during both periods of LGM and Holocene. Statistic analyses on the steady maximumδ 13Corg values of Holocene soils and modern climatic data from the Loess Plateau and Inner Mongolia indicate that the C4 plant abundance increases with increasing temperature and decreasing precipitation. The C4 plant abundance is related much closer with mean April temperature and precipitation than annual. These results lead us to deduce following conclusions. First, temperature is the major factor for control on variations in C4 plant abundance in the Loess Plateau from the last glacial to interglacial. In the absence of favorable temperature condition, both of low moisture and low atmospheric CO2 concentration are insufficient to drive an expansion of the C4 plants in the plateau. Second, ? 13Corg in the loess-paleosol sequences, as a proxy of the relative abundance of C4 plants in the Loess Plateau, could not be used as an indicator of changes in the summer monsoon intensity unless the temperature had changed without great amplitude. Since all C4 plants are grasses, finally, the increase of the C4 plants supports that forest has not been dominant in the ecosystem on the Loess Plateau during Holocene although precipitation and atmospheric CO2 were largely increased relative to those during LGM. | GUZhaoyan LIUQiang XUBing HANJiamao YANGShiling DINGZhongli LIUTungsheng | 2003 | Chinese Science Bulletin2003，48，2： | 13 |
| 3 | Identification of novel cis-elements bound by BplMYB46 involved in abiotic stress responses and secondary wall deposition显示文摘Transcription factors(TFs)play vital roles in various biological processes by binding to cis-acting elements to control expressions of their target genes.The MYB TF BplMYB46,from Betula platyphylla,is involved in abiotic stress responses and secondary wall deposition.In the present study,we used a TF-centered yeast onehybrid technology(TF-centered Y1H)to identify the cisacting elements bound by BplMYB46.We screened a shortinsert random library and identified three cis-elements bound by BplMYB46:an E-box(CA(A/T/C)(A/G/C)TG)and two novel motifs,a TC-box(T(G/A)TCG(C/G))and a GT-box(A(G/T)T(A/C)GT(T/G)C).Chromatin immunoprecipitation(ChIP)and effector-reporter coexpression assays in Nicotiana tabacum confirmed binding of BplMYB46 to the TC-box,GT-box,and E-box motifs in the promoters of the phenylalanine ammonia lyase(PAL),peroxidase(POD),and superoxide dismutase(SOD)genes,which function in abiotic stress tolerance and secondary wall biosynthesis.This finding improves our understanding of potential regulatory mechanisms in the response to abiotic stress and secondary wall deposition of BplMYB46 in B.platyphylla. | Huiyan Guo Liuqiang Wang Chuanping Yang Yiming Zhang Chunrui Zhang Chao Wang | 2018 | Journal of Integrative Plant Biology2018，60，10： | 7 |
| 4 | From 2D to 3D GIS for CyberCity显示文摘In order to understand the 3D landscape with many h igh buildings in a city, the 2D GIS has to be extended to 3D GIS. The further de velopment of CyberCity has to include various applications of 3D scenes from the outdoor scenes to the indoor ones. In thispaper, some key techniques, such as data management method and dynamicalvisualization method for the outdoor and the indoor scenes, are discussed.The indoor scene is compared with the outdoor one. The idea of integratedrepresentation of the outdoor and the indoor scenes in CyberCity GIS is discusse d. | LIDeren ZHUQing LIUQiang XUPeng | 2004 | Geo-Spatial Information Science2004，7，1： | 5 |
| 5 | ZERO PHASE ERROR REAL TIME CONTROL FOR FLIGHT SIMULATOR SERVO SYSTEM显示文摘Flight simulator is an important device and a typical high performance position servo system used in the hardware-in-the-loop simulation of flight control system.Without using the future desired output, zero phase error controller makes the overall system's frequency response exhibit zero phase shift for all frequencies and a very small gain error at low frequency range can be achieved.A new algorithm to design the feedforward controller is presented, in order to reduce the phase error, the design of proposed feedforward controller uses a modified plant model, which is a closed loop transfer function, through which the system tracking precision performance can be improved greatly.Real-time control results show the effectiveness of the proposed approach in flight simulator servo system. | LiuJinkun LiuQiang ErLianjie | 2004 | Chinese Journal of Mechanical Engineering2004，17，1： | 4 |
| 6 | ThERF1 regulates its target genes via binding to a novel cis-acting element in response to salt stress显示文摘Ethylene responsive factors(ERFs) are plantspeci fi c transcription factors that are involved in a variety of biological processes. We previously demonstrated that an ERF gene from Tamarix hispida, Th ERF1, encodes a protein binding to GCC-box and DRE motifs and negatively modulates abiotic stress tolerance. In the present study, microarray analysis was performed to study the genes regulated by Th ERF1 on a genomic scale. There were 154 and 307 genes(respectively representing 134 and 260 unique genes) signi fi cantly up- and downregulated by Th ERF1 under salt stress conditions,respectively. A novel motif, named TTG, was identi fi ed to be recognized by Th ERF1, which commonly presents in the promoters of Th ERF1-targeted genes. The TTG motif is also bound by other ERFs of a different subfamily from T. hispida and Arabidopsis, indicating that it is commonly recognized by ERF proteins. The binding af fi nities of ERFs to the TTG motif R e s e a r c h Aare signi fi cantly induced by salt stress. The TTG motif is more enriched than the GCC-box and DRE motifs in the promoters of Th ERF1-targeted genes. Taken together, these studies suggested that the TTG motif plays an important role in the gene expression regulated by ERFs in response to salt stress. | Liuqiang Wang Chao Wang Liping Qin Wenjin Liu Yucheng Wang | 2015 | Journal of Integrative Plant Biology2015，57，10： | 3 |
| 7 | Parotid gland carcinosarcoma with follicular dendritic cell sarcoma as mesenchymal component: a case report显示文摘The WHO has classified malignant mixed tumours of salivary glands into noninvasive carcinoma in pleomorphic adenoma, invasive carcinoma in pleomorphic adenoma, carcino-sarcoma and metastasizing mixed tumour.1 Carcinosarcoma, or true malignant mixed tumour, is a tumour composed of both carcinomatous and sarcomatous elements. It is an exceedingly rare tumour of the salivary glands and only about 60 cases have been reported.2 In this report we describe a case of carcinosarcoma of a parotid gland that contained an unusual mesenchymal component (follicular dendritic cell sarcoma, FDCS) in a 55-year-old man with cytological, histological and immunohistochemical findings. To our knowledge, this histological pattern has not been reported previously in the English literature. | LIUQiang ZHUJian-shan XUYan-ping | 2005 | Chinese Medical Journal2005，，6： | 2 |
| 8 | ThERF1 from Tamarix hispida confers decreased tolerance to oxidative and drought stresses and is regulated by a WRKY protein显示文摘The ethylene-responsive factor family is one of the largest families of plant-specific transcription factors that are involved in plant development and stress responses. Previously, we demonstrated that the gene Th ERF1,encoding a novel ethylene-responsive factor from Tamarix hispida, negatively modulates abiotic stress tolerance. In the present study, Arabidopsis plants overexpressing Th ERF1 had decreased oxidative tolerance and increased transpirational water loss rate compared with wild-type plants, leading to sensitivity to abiotic stress. Real-time RT-PCR showed that the upstream regulator of Th ERF1,Th WRKY2, is involved in responses to different abiotic stresses. Furthermore, both Th WRKY2 and Th ERF1 shared similar expression patterns in the stems and leaves of T.hispida when exposed to salinity, drought and abscisic acid. Chromatin immunoprecipitation assays further confirmed that Th WRKY2 can directly bind to the promoter of Th ERF1 and regulate its expression. This study revealed the regulatory mechanism of Th ERF1 expression in response to abiotic stresses in T. hispida. | Liuqiang Wang Chao Wang Liping Qin Ping Hu Yucheng Wang | 2016 | Journal of Forestry Research2016，27，4： | 2 |
| 9 | Carbon isotopic record from Upper Devonian carbonates at Dongcun in Guilin, southern China, supporting the worldwide pattern of carbon isotope excursions during Frasnian-Famennian transition显示文摘Two positive δ13C excursions are presented in records from the Frasnian-Famennian (F-F) marine carbonate sediments in Europe, America, Africa, and Australia, having been considered as a worldwide pattern, and attributed to enhanced organic carbon burial during the F-F biological mass extinction. However, this worldwide pattern has not been revealed from the well-deposited Late Devonian sequences in southern China. In this paper, a detailed investigation has been made on the Late Devonian section at Dongcun, Guilin, southern China to constrain perturbations in δ13C of carbonates in the F-F deposited sequence. The result from this section also indicates two positive δ13C excursions during the F-F transition. The first excursion with an amplitude of 1.5‰ occurred at the bottom of linguiformis Zone, later than the early excursion existing in the Late rhenana Zone of the Late Devonian profiles in other continents, especially, in central Europe. This difference has been expected to be a result as conodont Palmatolepis linguiformis occurred earlier in southern China than other sites. The second excursion with an amplitude of 2.1‰ is located at the F-F boundary, same as the records from other continents. This result strongly supports the view that two carbon isotope positive excursions during the F-F transition are common in carbonate sediments, resulting from worldwide increases of organic carbon burial intensity. | XUBing GUZhaoyan LIUQiang WANGChengyuan LIZhenliang | 2003 | Chinese Science Bulletin2003，48，2： | 2 |
| 10 | OPTIMAL ERROR ESTIMATES FOR NEDELEC EDGE ELEMENTS FOR TIME-HARMONIC MAXWELL'S EQUATIONS显示文摘在这份报纸,我们为 N 在 L2 标准和 H (卷屈) | Liuqiang Zhong Shi Shu Gabriel Wittum Jinchao Xu | 2009 | Journal of Computational Mathematics2009，27，5： | 2 |
| 11 | 183 W TEM00 modeacoustic-opticQ-switched MOPAlaserat850kHz显示文摘 | LiuQiang YanXingpeng FuXing etal | 2009 | OpticsExpress2009，17，7： | 1 |
| 12 | Economic balance of crops and fruits production by K, Mg and S fertilizers application in subtropical red acid soil of Guangxi province显示文摘 | Hongwei Tan Liuqiang Zhou Rulin Xie | 2004 | TROPICS2004，13，4： | 1 |
| 13 | Better Sugarcane Production Acidic Red Soils 显示文摘 | Hongwei Tan Liuqiang Zhou Rulin Xie | 2005 | Better Crops with Plant Food2005，，3： | 1 |
| 14 | Effect of fertilizer application and the main nutrient limiting factors for yield and quality of sugarcane production in Guangxi red soil 显示文摘 | Hongwei Tan Liuqiang Zhou Rulin Xie | 2005 | TROPICS2005，14，4： | 1 |
| 15 | Distribution Characteristics of Provincial Traditional Villages and Their Reasons显示文摘In this paper, a total of 723 traditional villages in Hunan were selected for research. With the aid of spatial analysis of GIS, the number equilibrium and spatial autocorrelation of the traditional villages were analyzed quantitatively, watershed distribution characteristics and ethnic distribution characteristics of the traditional villages were analyzed both qualitatively and quantitatively, and the influence factors of distribution of the traditional village were explored in terms of three aspects of agricultural production and population migration, history and culture, and economic activities. | JIANG Rong ZHENG Zhiming JIA Liuqiang | 2018 | Journal of Landscape Research2018，10，2： | 1 |
| 16 | Better sugarcane production for acidic red soils显示文摘 | Hongwei Tan Liuqiang Zhou Rulin Xie | 2005 | Better crops with plant food2005，89，3： | 1 |
| 17 | The role of potash in sustainable agriculture,poster:The effect of K fertilizer on cash crops and fruit in Guangxi显示文摘 | Hongwei Tan Liuqiang Zhou Rulin Xie and Meifu Huang | 2002 | Feed the soil to feed the people2002，，： | 1 |
| 18 | Farmland nutrient cycle and nutrient balance in Guangxi 显示文摘 | Hongwei Tan Liuqiang Zhou Rulin Xie | 2003 | Nutrient balances and nutrient cycling in agro-ecosystem2003，，： | 1 |
| 19 | Poly ( styrene-acrylic acid ) magnetic polymer microspheres 显示文摘 | Cheng Yarding Ma Liuqiang Li Rouhui | 2008 | Front Chem Eng China2008，3，4： | 1 |
| 20 | TuningtheeGlectronicand magneticpropertiesofgraphenenanoribGbonsthroughchemicaledgemodification显示文摘 | LiHuanhuan PengChuanqian LiuQiang | 2014 | JournalofChongqingUniversityofTechnology(NaturalScience)2014，28，7： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员