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| 1 | Ability of Agrogyron elongatum to accumulate the single metal of cadmium, copper, nickel and lead and root exudation of organic acids显示文摘Agrogyron elongatum were grown in nutrient solution containing moderate to high amounts of separate heavy metal of Cd, Cu, Ni and Pb in a greenhouse for a 9-day. Cd, Cu, Ni and Pb generally led to decrease in the elongation of roots although the length of seedlings exposed to Cd and Pb at 0.05 and 0 5 mg/L showed to be slightly greater than that of controls. Of the four metals in the experiment, Pb was absorbed and accumulated to the highest level, with the concentrations of 92754 mg/kg dry weight (DW) in roots and 11683 mg/kg DW in shoots. Cd was moderately accumulated in Agrogyron elongatum, but the maximum bioaccumulation coefficients (BCs) for roots and shoots were observed. The patterns for Cu and Ni uptake and distribution in plants differed from those of Pb and Cd, as it was showed that the shoot accumulation of Cu and Ni was significantly higher than in roots. A. elongatum had the highest Ni concentration in shoots (30261 mg/kg DW) at the external concentration of 250 mg/L. Cu ranked second, with a shoot concentration of 12230 mg/kg DW when 50 mg/L Cu in solution was applied. For the four trace elements tested, the highest concentrations in shoots decreased by the order of Ni>Cu>Pb>Cd (mg/kg DW), and those in roots were Pb>Cd>Ni>Cu (mg/kg DW). Malic, oxalic and citric acids exuded by roots exposed to 1 and 50 mg/L of the metals were detected. Release of organic acids from plants significantly differed among the metal treatments. Cu was most effectively in inducing root exudation of the three types of organic acids. Cd, and Ni were also the inducers of secretion of malic and oxalic acids. With reference of Pb, a small amounts of malic and oxalic acids were detected in the root exudates, but few quantities of citric acid were found. However, no correlation between alternations in root exudation of organic acids and metal accumulation could be established. | YANG Hong 1, Jongathan W.C.Wong 2, YANG Zhi min\+1, ZHOU Li xiang 1(1. College of Science, Nanjing Agricultural University, Nanjing\ 210095, China. 2. Department of Biology, Hong Kong Baptist University, China) | 2001 | Journal of Environmental Sciences2001,13,3: | 26 |
| 2 | Empirical likelihood confidence regions of the parameters in a partially linear single-index model显示文摘In this paper, a partially linear single-index model is investigated, and three empirical log-likelihood ratio statistics for the unknown parameters in the model are suggested. It is proved that the proposed statistics are asymptotically standard chi-square under some suitable conditions, and hence can be used to construct the confidence regions of the parameters. Our methods can also deal with the confidence region construction for the index in the pure single-index model. A simulation study indicates that, in terms of coverage probabilities and average areas of the confidence regions, the proposed methods perform better than the least-squares method. | XUE Liugen~1 & ZHU Lixing~2 1. College of Applied Sciences,Beijing University of Technology,Beijing 100022,China 2. Department of Mathematics,Hong Kong Baptist University,Hong Kong,China | 2005 | Science China Mathematics2005,48,10: | 13 |
| 3 | Review of Astragali Radix显示文摘Astragali Radix(AR),known as Huangqi in China,is one of the most popular herbal medicines learnt worldwide to reinforce Qi(the vital energy).AR is traditionally prepared from the dried roots of Astragalus membranaceus or A.membranaceus var.mongholicus.It has been reported to have cardiotonic,hepatoprotective,hypotensive,immunostimulant,anti-aging,anti-oxidative,antidiabetic,and anti-inflammatory activities.The bioactive compounds were found to be flavonoids,saponins,polysaccharides,amino acids,and some trace elements.The present paper reviews the studies on AR including history,phytochemistry studies,pharmacological functions,and clinical application in recent years. | LIU Jing,ZHAO Zhong-zhen,CHEN Hu-biao School of Chinese Medicine,Hong Kong Baptist University,Hong Kong,China | 2011 | Chinese Herbal Medicines2011,3,2: | 12 |
| 4 | Empirical likelihood-based inference in a partially linear model for longitudinal data显示文摘A partially linear model with longitudinal data is considered, empirical likelihood to infer- ence for the regression coefficients and the baseline function is investigated, the empirical log-likelihood ratios is proven to be asymptotically chi-squared, and the corresponding confidence regions for the pa- rameters of interest are then constructed. Also by the empirical likelihood ratio functions, we can obtain the maximum empirical likelihood estimates of the regression coefficients and the baseline function, and prove the asymptotic normality. The numerical results are conducted to compare the performance of the empirical likelihood and the normal approximation-based method, and a real example is analysed. | XUE LiuGen~(1+) & ZHU LiXing~2 1 College of Applied Sciences, Beijing University of Technology, Beijing 100022, China 2 Department of Mathematics, Hong Kong Baptist University, Hong Kong, China | 2008 | Science China Mathematics2008,51,1: | 9 |
| 5 | Analysis of spatio-temporal pattern and driving force of land cover change using multi-temporal remote sensing images显示文摘Landuse and land cover change is regarded as a good indicator that represents the impact of human activities on earth’s environment.When the large collection of multi-temporal satellite images has become available,it is possible to study a long-term historical process of land cover change.This study aims to investigate the spatio-temporal pattern and driving force of land cover change in the Pearl River Delta region in southern China,where the rapid development has been witnessed since 1980s.The fast economic growth has been associated with an accelerated expansion of urban landuse,which has been recorded by historical remote sensing images.This paper reports the method and outcome of the research that attempts to model spatio-temporal pattern of land cover change using multi-temporal satellite images.The classified satellite images were compared to detect the change from various landuse types to built-up areas.The trajectories of land cover change have then been established based on the time-series of the classified land cover classes.The correlation between the expansion of built-up areas and selected economic data has also been analysed for better understanding on the driving force of the rapid urbanisation process.The result shows that,since early 1990s,the dominant trend of land cover change has been from farmland to urban landuse.The relationship between economic growth indicator(measured by GDP)and built-up area can well fit into a linear regression model with correlation coefficients greater than 0.9.It is quite clear that cities or towns have been sprawling in general,demonstrating two growth models that were closely related to the economic development stages. | ZHOU QiMing & SUN Bo Department of Geography,Hong Kong Baptist University,Hong Kong,China | 2010 | Science China(Technological Sciences)2010,53,S1: | 6 |
| 6 | Gradient analysis of landscape spatial and temporal pattern changes in Beijing metropolitan area显示文摘The gradient based landscape metrics analysis is now widely used to study the landscape pattern changes in respond to the urbanization.In order to discover the trend of spatio-temporal changes in Beijing metropolitan area during the past 15 years,several landscape metrics are computed using a moving window along a 96 km long transect across Beijing metropolitan area from west to east.Specially,the spatial extent of sub-landscape,which is determined by the moving window’s size,is profoundly examined.The results show that the metrics varies smoothly and regularly along the selected transect when the window size is greater than 6 km×6 km,and irregularly fluctuated for the smaller window size,that the spatial and temporal landscape characteristics of Beijing city match the hypothetical framework of spatio-temporal urban sprawl in the form of alternating processes of diffusion and coalescence well,and that some new trends of the urban sprawl style in Beijing metropolitan area,such as leap-frog manner,are also detected by the gradient landscape analysis. | YANG YeTao1,ZHOU QiMing2,GONG JianYa3 & WANG YingYing4 1 Institute of Geophysics and Geomatics,China University of Geosciences,Wuhan 430074,China 2 Department of Geography,Hong Kong Baptist University,Hong Kong 3 State Key Laboratory of Information Engineering in Surveying,Mapping and Remote Sensing,Wuhan University,Wuhan 430074,China 4 Hubei Provincial Bureau of Meteorology,Wuhan 430074,China | 2010 | Science China(Technological Sciences)2010,53,S1: | 5 |
| 7 | The empirical likelihood goodness-of-fit test for regression model显示文摘Goodness-of-fit test for regression modes has received much attention in literature. In this paper, empirical likelihood (EL) goodness-of-fit tests for regression models including classical parametric and autoregressive (AR) time series models are proposed. Unlike the existing locally smoothing and globally smoothing methodologies, the new method has the advantage that the tests are self-scale invariant and that the asymptotic null distribution is chi-squared. Simulations are carried out to illustrate the methodology. | Li-xing ZHU, Yong-song QIN & Wang-li XU Department of Mathematics, Hong Kong Baptist University, Kowloon Tong, Hong Kong, China School of Mathematical Sciences, Guangxi Normal Uinversity, Guilin 541004, China School of Statistics, Renmin University of China, Beijing 100875, China | 2007 | Science China Mathematics2007,50,6: | 5 |
| 8 | Coulometric sizing of nanoparticles: Cathodic and anodic impact experiments open two independent routes to electrochemical sizing of Fez04 nanoparticles显示文摘 | Kristina Tschulik Baptiste Haddou Dario Omanovi Neil V. Rees Richard G. Compton | 2013 | Nano Research2013,6,11: | 5 |
| 9 | Uptake,Depuration and Subcellular Distribution of Cadmium in Various Tissues of Perna viridis显示文摘Green-lipped mussels (Perna viridis) were collected from a local mariculture site and placed in pre-cleaned sea water tanks containing 0, 0.2, 0.5 and 1.3 μg/ml CdCl2. The level of Cd in the gill, viscera and gonad was measured. The concentration of Cd in the 3 tissues increased linearly over 4 days’ of exposure. The rate of uptake depends on the concentration of Cd in the water. In the 3 tissues studied, the maximum rate of uptake (Vmax) was highest in the gill (500μg/g dry weight/day), followed by viscera (100μg/g dry weight/day) and gonad (56.8 μg/g dry weight/day). The majority of the Cd taken up was bound to a fraction of the heat-stable proteins similar to metallothioneins. The rate of Cd depuration from the tissues was poor. There was no change in Cd concentration over 8 days’ depuration in clean | M. S. YANG S. T. CHIU AND M. H. WONG(Department of Biology and Center for Waste Recycling and Environmental Biotechnology, Hong Kong Baptist University, Kowloon Tong, Hong Kong) | 1995 | Biomedical and Environmental Sciences1995,8,2: | 4 |
| 10 | Efficiency of HAART in the prevention of mother to children HIV-1 transmission at Saint Camille medical centre in Burkina Faso,West Africa显示文摘Objective:To evaluate efficiency of HAART in the prevention of mother to child HIV transmission.Methods:A longitudinal study was conducted on 1 300 women attending the antenatal service at Saint Camille Medical Centre from September 2010 to July 2011.The HIV status of mothers was determined by rapid tests and EUSA.Discordant results were confirmed by real-time PCR.PCR was used to determine HIV status of children born from HIV-positive mothers.Results:Among 1 300 pregnant women tested for HIV,378 were seropositive.Mothers were predominantly housewives(69.7%),and their mean age was(28.32±0.15) years.The overall prevalence of HIV transmission from mother to child was 4.8%(18/378).This prevalence differed significantly from 0.0%(0/114) to 6.8%(18/264) in children born from mothers under HAART and those with mothers under New Prophylactic Protocol(ACT + 3TC + NVP),respectively(P< 0.01).Children’s mortality rate during the medical follow up was 1.3%(5/378).Among 16 women with HIV dubious status by ELISA,the Real Time PCR confirmed 2/16(12.5%) as HIV positive. Conclusions:The protocol of prevention of mother to children HIV transmission(PMTCT) is effective.The rate of HIV vertical transmission is significantly reduced.Early diagnosis determined by PCR of children born from HIV- positive mother is necessary and recommended in the context of PMTCT in Burkina Faso.We also found that PCR is an effective tool to confirm HIV status in pregnant women. | Laure Stella Ghoma Linguissi Cyrille Bisseye Tani Sagna Bolni Marius Nagalo Djeneba Ouermi Florencia W Djigma Salvatore Pignatelli Joseph D Sia Virginio Pietra Remy Moret Jean Baptiste Nikiema Jacques Simpore | 2012 | Asian Pacific Journal of Tropical Medicine2012,5,12: | 4 |
| 11 | 银杏内生细菌JX-3生长条件优化显示文摘为提高银杏内生细菌JX-3的生长速度,缩短培养时间,试验选取培养温度、pH、接种量和培养时间进行单因素试验,来确定菌株的最佳生长条件;再由单因素试验结果选择3个影响较大的因素进行正交试验,根据正交试验结果获得更优化的生长条件。结果表明,单因素优化试验得出菌株JX-3生长的最优条件为:温度35℃,pH值7.0,最佳接种量12%,培养时间4 h;正交试验得出的JX-3最佳生长条件为:时间5 h,pH值7.0,接种量8%。 | BARANYIKA Jean Baptiste 马晓燕 王慧慧 FIDINIAINA Rina Juliana 蒲首丞 孙梅好 | 2018 | 山西农业科学2018,46,11: | 4 |
| 12 | A Dominant Allele of Arabidopsis Pectin-Binding Wall-Associated Kinase Induces a Stress Response Suppressed by MPK6 but Not MPK3 Mutations显示文摘植物房间墙由纤维素纤维,灵活果胶聚合物,和一连串的分类糖类和蛋白质的一个矩阵组成。Arabidopsis 的像受体的联系墙的 Kinases (WAK ) 在墙中绑果胶,并且在开发期间并且为对病原体的回答为房间扩大两个都是必要的并且伤害。Mitogen 激活蛋白质 Kinases (MPK ) 在优核质形成在房间表面受体和 transcriptional 和酶规定之间的一个主要发信号连接,并且 Arabidopsis MPK6 和 MPK3 确实在到应力和病原体的开发和反应有重要角色。WAK2 的主导的等位基因要求 kinase 活动并且激活包括增加的 ROS 累积和涉及病原体抵抗的众多的基因的起来规定的压力回答,伤害,并且房间墙生物的续生说。这主导的等位基因要求功能的果胶绑定和 kinase 领域,显示它从事表明小径的 WAK。主要血浆膜生产 ROS 酶建筑群的空异种, rbohd/f 不压制导致 WAK2cTAP 的显型。mpk6,然而并非 mpk3,空等位基因能压制这个主导的 WAK2 变化,因此区分的 MPK3 和 MPK6 的效果,其活动以前被认为冗余。基因表示的果胶激活被消除在一 wak2 空,但是由导致的 WAK 主导的等位基因的 tempered 被提高基础压力相关的抄本层次。结果建议细胞墙的变化能在细胞的回答和帮助在导致一个大变化解释病原体和伤害的罐头怎么在生长上有一般效果的机制。 | Bruce D. Kohorn Susan L. Kohorn Tanya Todorova Gillian Baptiste Kevin Stansky Meghan McCullough | 2012 | Molecular Plant2012,5,4: | 4 |
| 13 | Indicator system and evaluation framework for sustainable development显示文摘An indicator system of sustainable development was established and an evaluation framework for sustainable development was drawn in this study. | ZHAO Jing\|zhu\+1, Johannes Baptist Opschoor\+2 (1. Department of Systems Ecology, Research Center for Eco\|Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China 2. Economics Faculty, Free University, De Boelelaan 1105, 1081 HV Am | 1999 | Journal of Environmental Sciences1999,11,4: | 3 |
| 14 | Increased Risk for Nonmelanoma Skin Cancers in Patients Who Receive Thiopurines for Inflammatory Bowel Disease显示文摘 | Laurent Peyrin–Biroulet Kiarash Khosrotehrani Fabrice Carrat Anne–Marie Bouvier Jean–Baptiste Chevaux Tabassome Simon Frank Carbonnel Jean–Frédéric Colombel Jean–Louis Dupas Philippe Godeberge Jean–Pierre Hugot Marc Lémann Stéphane Nahon Jean–Marc Sabaté | 2011 | Gastroenterology2011,,5: | 3 |
| 15 | HPLC/MS Fingerprint Analysis of Tangshenosides显示文摘Radix codonopsis(党参),which is derived fromCodonopsis pilosula, C.pilosula subsp. Modesta andC. Tangshen(ChP,2000),has been used as a remedy fora decrease of appetite, psychoneurosis, fatigue, dyspepsiaetc.or as a substitute for Panax ginseng in traditionalChinese medicine. Relating to the constituents of theseherbs, triterpenes, phytosterols, furaldehyde, sesquitesand some phenolic glycosides have been reported, butnone of these compounds seems to be responsible for thebiological activities of this drug. As regards the quality evaluation of Radix Codonopsis, a HPLC analysis of atractylenolide Ⅲ has been described, but this sesquiterpene lactone exists in a very low content and is difficultfor conventional analysis. The determination of polysaccharide also met limitation because of its non-specialization. In this paper, we report the HPLC/MS fingerprintsanalysis of phelolic glycosides from Radix Codonopsis including three species. | Zhu Enyuan,Wang Zhengtao,Xu Guojun (China Pharmaceutical University,Nanjing 210038)Leung Heiwun.Yeung Hinwing (Institute for the Advancement of Chinese Medicine,HongKong Baptist University) | 2001 | 中药材2001,24,7: | 3 |
| 16 | Some results on resolvable incomplete block designs显示文摘This paper is concerned with the uniformity of a certain kind of resolvable incomplete block (RIB for simplicity) design which is called the PRIB design here. A sufficient and necessary condition is obtained, under which a PRIB design is the most uniform in the sense of a discrete discrepancy measure, and the uniform PRIB design is shown to be connected. A construction method for such designs via a kind of U-type designs is proposed, and an existence result of these designs is given. This method sets up an important bridge between PRIB designs and U-type designs. | LIU Minqian & FANG Kaitai Department of Statistics, Nankai University, Tianjin 300071, China Department of Mathematics, Hong Kong Baptist University, Hong Kong, China | 2005 | Science China Mathematics2005,48,4: | 3 |
| 17 | Diallel analyses of soluble sugar content in cowpea (Vigna unguiculata L.Walp.)显示文摘The content of soluble sugar in cowpea(Vigna unguiculata L. Walp.) seeds is important for their acceptability to consumers. The objective of this study was to evaluate the genetic control of soluble sugar content in cowpea using diallel analysis. For this purpose,half-diallel crosses were made among seven diverse parents. The amount of total soluble sugar was estimated by the phenol sulfuric acid reagent method and reducing sugar were measured by the DNS(3,5-dinitrosalicylic acid) reagent method. The total soluble sugar ranged from 11.12(VYA) to 40.79 mg g^(-1)(IT93 K-693-2) with a mean of 22.31 mg g^(-1).Reducing soluble sugar showed a mean value of 9.11 mg g^(-1) and ranged from 13.61(TVx3236) to 4.98 mg g^(-1)(Lori niebe). Diallel analysis showed that both additive and non-additive gene effects were significant in the genetic control of these traits. However,dominance variance was greater than additive variance for soluble sugar. The traits were controlled mainly by an overdominance model, suggesting the advantage of delaying selection to later generations. Soluble sugar content was found to be highly heritable, with broad-sense heritability ranging from 0.987 to 0.976. Narrow-sense heritability ranged from0.154 to 0.422 and revealed the lower importance of additive variance. Parents and F_1 hybrids differed significantly on the basis of their general and specific combining abilities,respectively. Recessive alleles had positive effects on total soluble sugar and reducing soluble sugar. These results could help cowpea breeders improve the acceptability of cowpea seeds and cowpea-based foods by appropriate selection. | Maina Antoine Nassourou Tchiagam Jean Baptiste Noubissié Yanou Nicolas Njintang Joseph Martin Bell | 2017 | The Crop Journal2017,5,6: | 3 |
| 18 | A Preliminary Review on Three-Dimensional City Model显示文摘In this paper a review on current research on 3DCM is presented, and an alternative approach by integrating the concepts and techniques of object\|oriented method and Computer Aided Design (CAD) is suggested. Through the approach urban spatial entities as objects are extracted, which are represented with primary 3D elements (node, edge, face and body) and their combinations. In the light of the concept of object, the method supports the multiple representation of Level of Details (LOD). More importantly, topological relationships between objects are described so that 3D topological operations can be implemented. | ZHOU Qiming Department of Geography ,Hong Kong Baptist University,KowloonTong HongKong. ZHANG Wenjiang | 2004 | Geo-Spatial Information Science2004,7,2: | 2 |
| 19 | 线状卡宾碳的研究进展和稳定性讨论(英文)显示文摘综合评述了所有存在的太空星际空间、地球和多种生物体中的线状卡宾碳以及在实验室合成的各种线状卡宾碳,重点评述了线状卡宾碳的稳定性和存在性。分析认为线状卡宾碳的稳定性与其类型、所处气氛、环境有关,提出可以通过插层化合物和端部基团连接等方法获得稳定的线状卡宾碳。 | 传秀云 王统宽 Jean Baptiste DONNET | 2005 | 新型炭材料2005,20,1: | 2 |
| 20 | Segregation-assisted spinodal and transient spinodal phase separation at grain boundaries显示文摘Segregation to grain boundaries affects their cohesion,corrosion,and embrittlement and plays a critical role in heterogeneous nucleation.In order to quantitatively study segregation and low-dimensional phase separation at grain boundaries,here,we apply a density-based phase-field model.The current model describes the grain-boundary thermodynamic properties based on available bulk thermodynamic data,while the grain-boundary-density profile is obtained using atomistic simulations.To benchmark the performance of the model,Mn grain-boundary segregation in the Fe–Mn system is studied.3D simulation results are compared against atom probe tomography measurements conducted for three alloy compositions.We show that a continuous increase in the alloy composition results in a discontinuous jump in the segregation isotherm.The jump corresponds to a spinodal phase separation at grain boundary.For alloy compositions above the jump,we reveal an interfacial transient spinodal phase separation.The transient spinodal phenomenon opens opportunities for knowledge-based microstructure design through the chemical manipulation of grain boundaries.The proposed density-based model provides a powerful tool to study thermodynamics and kinetics of segregation and phase changes at grain boundaries. | Reza Darvishi Kamachali Alisson Kwiatkowski da Silva Eunan McEniry Dirk Ponge Baptiste Gault Jörg Neugebauer Dierk Raabe | 2020 | npj Computational Materials2020,,1: | 2 |