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黄家沟泥石流的基本特征及成因分析 总被引:3,自引:0,他引:3
黄家沟是一条具有较强活动性的泥石流沟,对富泉集镇新址构成了较大的安全隐患,文章针对其基本特征及成因进行了分析。 相似文献
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利用油页岩研制多孔建筑陶瓷 总被引:1,自引:0,他引:1
利用油页岩自身燃烧放出气体后形成孔洞的特性,以吉林省农安地区低品位油页岩为基料,以泥炭为造孔剂、火山渣为添加剂、粉煤灰为增强剂,选用配比为50:25:15:10(油页岩:泥炭:火山渣:粉煤灰),采用湿压成型,在1 050 ℃下烧结出新型的多孔建筑陶瓷.通过测试和表征,该种陶瓷抗压强度为16.8 MPa,气孔率48.19%,容重1.23 g/cm3,最大孔径约20 μm. 相似文献
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目前,农村土地流转已经进入大范围试点和推广阶段,改革势在必行。我们既要看到农村土地流转的美好前景,也要意识到存在的阻力和困难。 相似文献
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The typical organic pollutant polycyclic aromatic hydrocarbon (PAH) anthracene was selected as a contaminant to investigate its effects on the activities of superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GSH-Px) in the clam Ruditapes philippinarum. The results show that SOD, CAT and GSH-Px had diff erent induction and inhibition reactions to anthracene stress, and that three diff erent organs in R. philippinarum (visceral mass, muscle tissue and mantle) had diff erent sensitivities to anthracene stress. This study suggest that SOD activities of the visceral mass, CAT activitities of the mantle and the visceral mass, and GSH-Px activity of the muscle tissue could be used as sensitive indicators of anthracene stress in R. philippinarum. 相似文献
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