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群Zn^*的构造 被引量:2
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作者 孙宗明 《长沙大学学报》 2002年第2期19-21,共3页
本文证明群Z n 是它的一些子群的直积 ,同时给出直积分解的方法与例子。
关键词 Zn^* 直积 同构
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Detection of Relation between V and Zn in Two Species of Mollusks and the Surrounding Water in the Marshes of Southern Iraq
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作者 Abdal-Kader Saeed Reyam Naji Ajmi Huda Farooq Zeki 《Journal of Environmental Science and Engineering(A)》 2013年第12期753-758,共6页
Elements (vanadium and zinc) were determined in the two most abundant species of shell mollusks (Unio tigridis and Fiviparous bengalensis) and the water where they live in five stations in the Iraqi marshes. The s... Elements (vanadium and zinc) were determined in the two most abundant species of shell mollusks (Unio tigridis and Fiviparous bengalensis) and the water where they live in five stations in the Iraqi marshes. The study of concentrations elements was a target organ for aquatic environmental. Comparison between the mean concentrations of the elements in the water concentration levels of all studied elements was the highest with the mollusks. The results show that the station 5 is where the highest concentrations are found in water and in the two species. There is a significant correlation (P = 0.224) for concentrations of vanadium and P = 0.735 for zinc in two species of mollusks relative to their concentrations in surface water. All significant differences were accepted at a level of P 〈 0.05. The potential uptake of elements including V and Zn, as Viviparous bengalensi 〉 Unio tigridis, The mechanism for elements uptake determined by water for organisms confined to the contaminated areas seemed to be largely independent of species, mollusks demonstrated a significant positive relationship with water. These results have important implications for the utility of marshes biota as subjects for elements monitoring program. 展开更多
关键词 Iraqi marsh elements pollution mollusks water.
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