Origin and Distribution of Heavy Minerals in the Surficial and Subsurficial Sediments of the Alluvia

来源 :土壤科学期刊(英文) | 被引量 : 0次 | 上传用户:hblhzl_18
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Origin and distribution of the heavy minerals of surficial and subsurficial sediments has been investigated in the alluvial Nile River terraces, Khartoum North, Sudan. Heavy mineral assemblages in the very fine sand fraction (0.063 - 0.125 mm) of 10 sedim
其他文献
从轮枝链霉菌Streptoverticillium mobaraense细胞中获得其基因组DNA,用一对特异性的引物通过PCR的方法扩增出转谷氨酰胺酶(transglutaminase,TGase)全长基因,回收片段并将其
“伦理”是指在处理人与人、人与社会以及人与自然之间的相互关系时应遵循的一定道理和准则,且指引并规范着人们的行为观念。翻译亦涉及多种人与人之间的关系,因此,翻译活动
Vegetable farming is an activity sensitive to the dynamism of the population and to the level of intensification in the use of soil resources. A study was condu
以17-α甲基睾丸酮投喂赤点石斑鱼 (Epinephelus akaara ),成功地获得了性逆转的有功能的雄鱼.用SMART cDNA合成和长片段PCR技术构建了性逆转前后脑垂体cDNA文库;用抑制消减
A pot experiment was conducted to investigate the comparative effect of cow manure vermicompost and NPK fertilizers on the growth and flower production of Zinni
白腐菌应用于废水处理始于二十世纪八十年代.本文对印染废水的处理方法、白腐菌及其对污染物的降解机理作了简要概述,着重介绍了白腐菌对染料脱色和降解作用的研究进展.白腐
Urban sediment generated by stormwater management techniques are highly contaminated with various trace elements. The characterization of trace element speciati
Applying insufficient nitrogen (N) in a highly responsive crop, such as corn, results in lower grain yield, quality, and profits. On the other hand, when nitrog
Nitrogen (N) mineralisation contributes considerably to crop growth in fertilized and unfertilized fields. It is useful to be able to assess potential N mineral
<正> 病例:男,1岁。反复咳喘伴间断发热1个月,曾在外院按“支气管肺炎”住院治疗,正规应用抗菌素,症状时轻时重。近5天喘憋加重伴口周发绀来我院。观察患儿以阵发性痉咳为主,