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Determination of complexation capacity of trace metal-organic in natural water

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Journal of Environmental Sciences 1999年第1期11卷 128-132页

作者： Yang Yu ying department of Chemistry, inner {2. Teachers College for Nationalities, Tongliao 02.000, China wu Di, Hong Xia, Guo Bo shu Institute of Environmental Chemistry, inner mongolia normal university, huhhot 01002., China

The complexation capacity for heavy metals (Cu, Cd, Pb) were determined by anodic stripping voltammetry in South China Sea, Hulun Lake and wuliang Suhai. The conditional stability constants and complexation capacity index were calculated. The data showed that the complexation capacity of the Hulun Lake was greater than that of seawater and wuliang Suhai. The sequence of complexation capacity is C (CuL)> C (CdL)> C (PbL), the values are in concord with results of analysis on dissolved organic carbon. The conditional stability constants were in an opposite sequence: K (CuL)< K (CdL)< K (PbL). When log K are similar, the greater the complexation capacity, the greater the complexation capacity index.

关键词： complexation capacity heavy metal ASV method natural water.

THE JACKSON THEOREM IN B_a SPACES

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Analysis in Theory and Applications 1996年第2期12卷 60-69页

作者： wu Garidi (inner mongolia normal university,China) 1. department of mathematics Inner Mongolia Normal University 010022 Huhehaute P. R. C.

As everyone knows,the classical Jackson theorem in approximation theory was generalized in Lp spaces by *** this paper,we proved the Jackson theorem in B,spaces which introduced by Ding Xia Xi,

关键词： THE JACKSON THEOREM IN B_a SPACES APPI

ON N-WIDTHS OF SOME PERIODIC CONVOLUTION CLASSES IN ORLICZ SPACES

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Analysis in Theory and Applications 1998年第3期14卷 25-35页

作者： wu Garidi (inner mongolia normal university,China) department of mathematics Inner Mongolia Normal University Hunehaute China

In this paper we extend the some accurate results on n-width of Sobolev class W ∞ t in Lp spaces to Orlicz spaces, and establish the corresponding results for dual cases.

关键词： Orlicz Space Duality Theorem Linear Differential Operator Sobolev Class Luxemburg Norm

STRUCTURE AND MAGNETIC PROPERTIES OF YFe_(12.x)Ti_x COMPOUNDS

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Acta Metallurgica Sinica(English Letters) 2001年第3期14卷 171-176页

作者： B. Fuquan, J.L. Wang, N. Tang, W.Q. Wang, Z.Z. Guo, G.H. wu and F.M. Yang (State Key Laboratory of Magnetism, Institute of Physics, The Chinese Academy of Sciences, Beijing 100080, China) (department of Physics, {2., {2. 01 State Key Lab. of Magnetism Inst. of Phys. Chinese Acad. of Sci. Beijing 100080 China

The structure and magnetic properties of the YFe12.xTix compounds (x=0.85, 1.00, 1.10, 1.2. and 1.30) have been investigated. Both the thermomagnetic analysis and X-ray diffraction patterns show that all compounds studied are almost single phase and crystallize in the ThMn12.type structure. The lattice parameters a, c and unit cell volume V increase monotonously with the increase of Ti content. Curie temperature Tc is almost independent on the Ti content while the spontaneous magnetization M0, the anisotropy field Ba and the anisotropy constant K1 decrease monotonously with the increase of Ti content and the temperature increases from 1.5 K to 2.3 K.

关键词： Iron Magnetic properties Structure (composition) Titanium Yttrium

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稀土-铁-碳化合物磁性的理论分析

稀土 2002年第6期23卷 61-64页

作者：乔文华吴键包头师范学院物理系内蒙古包头014030 内蒙古北方重型汽车股份有限公司内蒙古包头014030

利用两个次晶格的分子场理论分析了稀土-铁-碳化合物的磁性,计算了分子场系数nFF,nRF,nRR以及自旋交换系数AFF,ARF,ARR,并对所得结果进行了讨论。

关键词：稀土铁碳化合物磁性理论分析分子场理论居里温度磁化温度

Projected changes in Köppen-Trewartha climate zones under 1.5-4℃global warming targets over mid-high latitudes of Northern Asia using an ensemble of RegCM4 simulations

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Advances in Climate Change Research 2024年第2期15卷 185-196页

作者： Jie wu Xue-Jie GAO Xian-Bing TANG Filippo GIORGI School of Geography and Environmental Engineering Gannan Normal UniversityGanzhou 341000China Climate Change Research Center Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University of Information Science&TechnologyNanjing 210044China university of Chinese Academy of Sciences Beijing 100049China The Abdus Salam International Centre for Theoretical Physics Trieste 34100Italy

Mid-high latitude Northern Asia is one of the most vulnerable and sensitive areas to global warming,but relatively less studied *** used an ensemble of a regional climate model(RegCM4)projections to assess future changes in surface air temperature,precipitation and Köppen-Trewartha(K-T)climate types in Northern Asia under the 1.5-4℃global warming ***4 is driven by five CMIP5 global models over an East Asia domain at a grid spacing of 2. *** of the present day(1986-2.05)simulations shows that the ensembles of RegCM4(ensR)and driving GCMs(ensG)reproduce the major characters of the observed temperature,precipitation and K-T climate zones reasonably *** and more realistic spatial detail is found in RegCM4 compared to the driving GCMs.A general warming and overall increases in precipitation are projected over the region,with these changes being more pronounced at higher warming *** projected warming by ensR shows different spatial patterns,and is in general lower,compared to ensG in most months of the year,while the percentage increases of precipitation are maximum during the cold *** future changes in K-T climate zones are characterized by a substantial expansion of Dc(temperature oceanic)and retreat of Ec(sub-arctic continental)over the region,reaching∼2.%under the 4℃warming *** most notable change in climate types in ensR is found over Japan(∼60%),followed by Southern Siberia,mongolia,and the Korean Peninsula(∼40%).The largest change in the K-T climate types is found when increasing from 2.to 3℃.The results will help to better assess the impacts of climate change and in implementation of appropriate adaptation measures over the region.

关键词： Mid-high latitudes of Northern Asia Köppen climate zones Global warming targets Regional climate model

Banach空间不连续脉冲微分-积分方程的周期边值问题

维普期刊数据库评论

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系统科学与数学 2003年第3期23卷 374-380页

作者：刘笑颖吴从炘徐州师范大学数学系徐州221009 哈尔滨工业大学数学系哈尔滨150001

本文讨论了Banach空间含间断项的一阶混合型脉冲微分-积分方程的周期边值问题,通过建立一个比较定理,应用不动点定理与上、下解方法证明了最大解、最小解及迭代解的存在性,推广改进了某些文献中的相应结果。

关键词： Banach空间脉冲微分-积分方程周期边值问题解不动点定理存在性比较定理

铕—苯甲酸—1,10-菲咯啉的合成及谱学性质

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稀土 2003年第4期24卷 1-4页

作者：赵斯琴王喜贵吴红英吴哈申内蒙古师范大学化学系内蒙古呼和浩特010022

合成了稀土元素铕( )-苯甲酸-1,10-菲咯啉的三元配合物。通过元素分析和红外光谱确定了配合物的组成为EuL3phen(L∶苯甲酸根,phen∶1,10-菲咯啉)。通过发射光谱和激发光谱的测试表明,三元配合物在579、591、614、649、690nm处产生发射峰... 详细信息

合成了稀土元素铕( )-苯甲酸-1,10-菲咯啉的三元配合物。通过元素分析和红外光谱确定了配合物的组成为EuL3phen(L∶苯甲酸根,phen∶1,10-菲咯啉)。通过发射光谱和激发光谱的测试表明,三元配合物在579、591、614、649、690nm处产生发射峰,分别归属于Eu3+的5D0→7F0、5D0→7F1、5D0→7F2.5D0→7F3、5D0→7F4跃迁。从发射光谱的峰强和激发光谱在2.0nm～380nm范围内产生宽而强的吸收峰可以得出第二配体phen的加入能显著增加Eu3+的发光强度,由此说明phen的加入更有利于配体吸收能量,也有利于配体更有效地向Eu3+传递能量。另外,对三元配合物的远红外光谱和拉曼光谱进行了分析。

关键词：铕配合物苯甲酸 1,10-菲咯啉谱学性质

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平面上的近似连续积分(英文)

数学研究 1999年第3期 238-244页

作者：叶国菊吴从炘李秉彝西北师大数学系!兰州730070 哈尔滨工业大学数学系!哈尔滨150001 新加坡国立教育学院

近似连续Ｐｅｒｒｏｎ积分首先由Ｂｕｒｋｉｌｌ提出，称之为ＡＰ积分，由于近似复盖具有划分性质，因而可以给出ＡＰ积分的Ｒｉｅｍａｎｎ型定义．但是，在平面上近似复盖是否具有划分性质还不知道．本文给出了一种方法，用这种... 详细信息

近似连续Ｐｅｒｒｏｎ积分首先由Ｂｕｒｋｉｌｌ提出，称之为ＡＰ积分，由于近似复盖具有划分性质，因而可以给出ＡＰ积分的Ｒｉｅｍａｎｎ型定义．但是，在平面上近似复盖是否具有划分性质还不知道．本文给出了一种方法，用这种方法可以在平面上给出ＡＰ积分的Ｒｉｅｍａｎｎ型定义而不需要证明划分的存在性．

关键词： B积分近似复盖 AP积分