simple sample
6.The paper discusses the low energy gamma determination of ~(235)U, ~(238)U, ~(226)Ra and ~(232)Th contents in uranium ores and presents a simple and precise method for sample self-absorption calibration. The better analytical accuracy and precision for the determination of ~(235)U, ~(238)U, or ~(235)U/~(238)U in uranium samples are achieved.
9.A method of determination of Copper in blood serum by using oscilloscopic polarography is presented. With the base solution system of Ammonia-Amm-onium Chloride-Cupral,the peak electric current is of good linear with theconcentration of Copper within 1 ×10-6 mol·L-1──4×10-5 mol·L-1. Themethod is simple. rapid and can be applied to determine Copper for blood serum andorganism sample.
10.The high-vacuum flat capsulation of triode field emission display with carbon nanotube emitters(CNT-FED) was realized with high temperature sintering process and low-melting-glass sealing-in technology.The capsulation was not only stable and reliable but also simple and cheap,and possessed better device sealing performance than before.The triode CNT-FED sample was fabricated,which possessed the better field emission characteristics and higher vision brightness.

