新疆博斯腾湖沉积岩心的~(210)Pb、~(228)Th、~(239,240)Pu和~3H的分布及意义

作者测定了博斯腾湖沉积岩心~(210)Pb、~(228)Th和核试验释放核素~(239,240)Pu、~3H的分布,并据~(210)Pb、~(228)Th、~(239,240)Pu的结果估算湖泊的沉积速率,分别为0.31cm/a,0.26cm/a和0.33cm/a。它表明该湖泊近百年来沉积环境十分稳定。沉积物岩心极好地保存了人类大气核试验的历史记录。~(239,240)Pu分布在1963±2出现峰值,与60年代核试验高峰期相当吻合。沉积物孔隙水~3H分布的峰值出现在1969年,与湖水的混合过程有关。     

抓两头谋大事

年初召开的全省国土资源局长会议指出，今年是实施“十一五”规划的开局之年，要为保证我省“十一五”规划的顺利实施开好头、布好局。作为全省国土资源工作的决策机关、组织机关、执行机关、监督机关，省厅的责任尤为重大。为此，王松林厅长要求省厅各部门都要“想大事、谋大事、干大事”。     

22nd IAS Meeting of Sedimentology

The 22nd IAS Meeting of Sedimentology was held in the Convention Centre of the Grand Hotel Adriatic, in a small touristic town Opatija, located on the eastern Adriatic coast where Central Europe and the Mediterranean meet. It was the second IAS Meeting held in Croatia--the first one, 4th IAS Regional Meeting of Sedimentology, was held in Split in 1983. The Meeting in Opatija was organized by the Institute of Geology (Zagreb) and the Croatian Geological Society. The sponsor was Ministry of Science and Technology of the Reoublic of Croatia.     

农村“空心村”整治的综合效益

“空心村”经过整治，一般都取得了良好的效益，使农民和农村形态都发生了深刻的变化。无论是在节约土地，增加建设用地指标，满足社会经济发展对土地的需求，还是在改善农民居住环境，形成关爱、安宁的人际关系，乃至转变农民观念，激发广大干部群众全面建设小康社会的热情等方面都显示出良好效应。