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Effect of Amendments on Growth and Element Uptake of Pakchoi in a Cadmium, Zinc and Lead Contaminated Soil

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Pedosphere 2002年第3期12卷 243-250页

作者： CHENXIAOTING WANGGUO 等 collegeofLifeScience FujianAgricultureandForestryUniversityFuzhou350002（China） collegeofResourcesandEnvironment FujianAgricultureandForestryUniversityFuzhou350002（China）

A pot experiment was carried out to study the effects of two amendments, limeand calcium magnesium phosphate, on the growth and Cd, Pb, Zn, Cu, Mu, Fe, N, P and K uptake ofpakchoi (Brassica chinensis) in a Cd, Pb and Zn polluted acid soil in the southern part of *** growth of pakchoi was apparently improved by lime and calcium magnesium phosphate application,the uptake of Cd, Pb, Cu and Zn by pakchoi was significantly depressed and the symptom caused byheavy metals pollution was eliminated. Meanwhile, the absorption of N, K and Mn was also inhibitedby these amendments. Soil pH was the main factor controlling the uptake of the heavy metals bypakchoi. This suggests that lime and calcium magnesium phosphate could be used as effectiveamendments for eliminating the toxicity of heavy metals to the vegetable and inhibiting theirabsorption by the crop.

关键词： calcium magnesium phosphate Cd Pb and Zn polluted soil lime pakchoi

Design and Implementation of WebGIS Based on SOAP

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Wuhan university Journal of Natural sciences 2003年第4A期8卷 1085-1089页

作者： Feng Yu-cai, Yi Bao-lin, Tan Zhi-peng college of Computer Science and Technology, Huazhong university of Science and Technology, Wuhan 430074, Hubei, china college of Computer Science and Technology Huazhong University of Science and Technology Wuhan Hubei China

Most popular applications currently running on the Internet, the World Wide Web is of an exponential growth in size, which results in network congestion and server overloading. In this paper, we analyze the characteristics of SOAP (Simple Object Access Protocol) and the state-of-art techniques, which have been used in WebGIS. Then, the basic characteristics of DM3 database system were introduced; Furthermore, a novel N-tier WebGIS architecture based on SOAP and the framework supported both server-based and client\|based solutions are proposed. Finally, some experiments and implementations are shown.

关键词： SOAP WebGIS spatial databases

Threshold Image Segmentation Based on Granular Immune Algorithm

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Threshold Image Segmentation Based on Granular Immune Algori...

Template-free hydrothermal synthesis of single-crystalline SnO_2 nanocauliflowers and their optical properties

2009中国控制与决策会议

作者： Xu Xinying~1,Zhang Zhijun ~(1,2),Xie Jun~1,Xie Keming~1 1.college of Information Engineering,Taiyuan university of Technology,Taiyuan,030024,china 2.college of Information Management,Shanxi university of Finance and Economics,Taiyuan,030006,china

＜正＞Image segmentation is an important processing step in many image,video and computer vision applications. Artificial Immune Systems（AIS） is a diverse area of research that attempts to bridge the divide between immunological and *** this paper,we present a threshold method based on granular immune algorithm（GIA） for image segmentation,which includes granular hierarchy and immunological *** on two granular hierarchies,the method can not only execute multi-point parallel search from local to global searching field but also find better solutions with small generation and mean numbers of function *** this method has better performance in stabilization and convergence that *** experimental results indicate that the proposed method here is very suitable for image segmentation

关键词： Image Segmentation Threshold Granular Hierarchy Artificial Immune System

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Rare Metals 2009年第5期28卷 449-453页

作者： WANG Yali GUO Min ZHANG Mei WANG Xidong School of Metallurgical and Ecological Engineering University of Science and Technology Beijing Beijing 100083 China college of Engineering Peking University Beijing 100871 China

Large-scale single-crystalline SnO2 nanocauliflowers were successfully synthesized using a hydrothermal growth method without any template. The samples were characterized by X-ray diffraction （XRD）, field-emission scanning electron microscopy （FE-SEM）, en- ergy-dispersive X-ray spectroscopy （EDS）, transmission electron microscopy （TEM）, and selected area electron diffraction （SAED）. FE-SEM images show that the as-grown SnO2 nanocauliflowers are constructed of tetragonal prisms with a width of 500-600 nm. XRD, EDS, and SAED results indicate that the as-grown SnO2 nanocauliflowers are single crystalline with the tetragonal rutile crystalline structure. The growth mechanism of SnO2 nanocauliflowers is also preliminarily discussed on the basis of different Sn（OH） 62- concentrations, and it is found that Sn（OH） 62- concentration plays an important role in determining the shape of the prepared SnO2. Room temperature photoluminescence was further carried out on SnO2 nanocauliflowers to investigate their optical properties. An intense blue luminescence centered at a wavelength of 424 nm is observed in the as-grown SnO2 nanocauliflowers.

关键词： nanocauliflowers SnO2 hydrothermal photoluminescence

The evolution model of the earth's limited expanding

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Chinese Science Bulletin 2000年第4期45卷 304-313页

作者： CHEN Zhigengchina university of Mining and Technology, Beijing 100083, china china university of Mining and Technology Beijing China

Based on the prerequisite that the earliest acid rock formed because of the initial global expanding tectonic processes, by combining it with other geological limitation conditions, and starting from the lithosphere elastic mechanics, the following is defined : the earth expansion started at about 4300 Ma ago, the average increasing rate of the earth radius is 0.40 mm/a, the initial expanding earth radius is 4651 km, and the initial global expansion of tectonic processes happened at 4183.7 Ma ago. From the natural and attenuation evolution condition of the earth and terrestrial planets, through the limit condition got from the combination of the mathematics logic and the geological significance, the limited expanding earth evolution model is established as follows:in which R0= 4.651×106 m, A =1.86×106 m, β = -6.01?10-10 a and ts=3×10 a. From this model the maximum radius Rmax of the limited expanding earth evolution should be 6511 km. The earth’s radius increasing rate is about 0.1 mm/a at present.

关键词： limited earth expansion evolution model start time of expansion start time of expanding tectonism stage character of tectonism .

On Associative Pseudo-Filters and Pseudo-a Filters of Peudo-BCI Algebras

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On Associative Pseudo-Filters and Pseudo-a Filters of Peudo-...

Research Hot Spots of Black Peanut

2010 2nd International Conference on Intellectual Technology in Industrial Practice (ITIP2010)

作者： Xiaohong Zhang 1 2 1 Department of Mathematics college of Art and sciences Shanghai Maritime university Shanghai 201306 P.R.china 2 Department of Mathematics Ningbo university Zhejiang Ningbo 315211 P.R.china

Some new properties of associative pseudo-filters and pseudo-a filter of pseudo-BCI algebras are investigated. The following important results are proved: （1） a pseudo-BCI filter of a pseudo-BCI algebra is associative if and only if it is a pseudo-a filter;（2） a pseudo-BCI algebra is an associative BCI- algebra if and only if its every pseudo-BCI filter is associative （or pseudo-a filter）;（3） a pseudo-BCI filter of a pseudo-BCI algebra is associative （or pseudo-a filter ） if and only if it is an anti-grouped and pseudo-q filter, if and only if it is antigrouped and T-type pseudo-BCI filter.

关键词： Logic in artificial Intelligence BCI-logic antigrouped pseudo-BCI algebra associative pseudo-filter pseudo-a filter T-type pseudo-BCI filter

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Asian Agricultural Research 2012年第7期4卷 89-92页

作者： YE Chong 1 ,ZHANG Yong-hong1,HUANG Ying-guo1,REN Yong-kuan1,CAI Shi-zhen2 1.Library of Sichuan Agricultural university,Chengdu 611130,china 2.college of Landscape Architecture,Sichuan Agricultural university, Chengdu 611130,china

Taking the research papers on black peanut in National Knowledge Infrastructure(CNKI)as data sources,we determine the research hot spots on black peanut using word frequency analysis,and analyze the main research directions that change over the *** results show that the relevant researches on black peanut are mainly concentrated in six themes(study of varieties,physiological property,cultivation management,development prospects,relationship with agriculture,and molecular level);varieties,physiology,cultivation and other aspects are the focus of current research hot spots;the researches on selection and breeding of variety and various physiological and ecological mechanisms,still need a breakthrough.

关键词： Black peanut Word frequency analysis Research hot

几种有机酸对花岗岩风化壳中稀土元素的浸出作用的实验研究

维普期刊数据库评论

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稀土 2002年第2期23卷 1-5,12页

作者：毋福海陈炳辉刘琥琥广东药学院广东广州510224 中山大学地球科学系广东广州510275

几种有机酸对广东共和花岗岩风化壳样品中稀土元素的浸泡实验结果表明 :1稀土的浸出量随酸浓度的增加而明显升高 ;2低浓度的有机酸对稀土的浸出量随着水岩比的增加而增加 ;3有机酸与风化壳样品的作用结果导致介质的 p H值会发生变化 ,... 详细信息

几种有机酸对广东共和花岗岩风化壳样品中稀土元素的浸泡实验结果表明 :1稀土的浸出量随酸浓度的增加而明显升高 ;2低浓度的有机酸对稀土的浸出量随着水岩比的增加而增加 ;3有机酸与风化壳样品的作用结果导致介质的 p H值会发生变化 ,大多数是 p H值升高 ;稀土的浸出量随着 p H降低有升高的趋势 ;4与硫酸铵所浸出的稀土相比 ,有机酸对风化壳稀土的浸出结果是 Ce负异常减弱 ,Eu负异常增加 ,(L a/ Sm) N 和 (Gd/ Yb) N比值相对减少 ,即有机酸对风化壳稀土分异作用作出了贡献。

关键词：浸出作用有机酸稀土元素风化壳花岗岩

Short-Term Electric Power Load Forecasting Based on Goal Programming Model

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Short-Term Electric Power Load Forecasting Based on Goal Pro...