A highly sensitive and selective catalytic kinetic spectrophotometric method for the determination of Cu(II)is proposed.It is based on the catalytic effect of C
<正>80年代以来,由于世界人口的迅速增长,矿产资源消耗量的急剧增大,找矿机遇的日益减少,而找矿难度又在日趋加大的形势下,地质找矿所面临的任务显得更加迫切与严峻。当前,从
美是人类的永恒追求，追求美，创造美，享受美是人类发展的不竭动力。开展人事人才美学研究，推进水利人事人才美学建设，对构造和美的适宜水利人全面发展和广大水利人才健康成长的水文
针对汽车内板件的成形特点,运用Dynaform软件和正交设计模拟不同工艺参数下的成形过程,采用BP(back propagation)神经网络建立工艺参数与成形缺陷之间的网络关系,从而确定合
The complex distribution of gas hydrate in sediments makes understanding the mechanical properties of hydrate-bearing sediments a challenging task.The mechanica
Several buried paleo-channels are located on the continental shelf of the western Yellow Sea.Research on the paleochannels is significant for both theoretical s
The history of the East Asian monsoon(EAM)since Last Glacial Maximum is reconstructed based on records in a sediment core retrieved from the northern South Chin