排序方式: 共有3条查询结果,搜索用时 0 毫秒
1
1.
采用淀粉-碘化镉显色法测定复合型助滤剂中的PAM在不同变质程度、不同灰分(岩相)煤样表面的吸附量,同时测定了相应试点颗粒表面的ξ-电位,通过试验结果综合分析得到PAM在煤表面的吸附规律:在PAM用量相同的条件下,复合型助滤剂中的PAM与水溶液中的PAM在不同煤表面的吸附量相同,不受复合型助滤剂中其他成分的影响;PAM在煤表面的吸附是非化学吸附,这种吸附没有选择性;吸附PAM之后,煤表面的ξ-电位没有明显的变化,PAM的助滤作用是通过“桥联”形成絮团提高滤饼透气性实现的. 相似文献
2.
3.
Peter Aronhime KeChang Wang Tongfeng Qian 《Analog Integrated Circuits and Signal Processing》2001,28(1):27-34
A current feedback op-amp (CFOA) has the advantage that feedback structures in current-mode circuits are more easily devised because the voltage buffer at the output of the CFOA does not load the output of the integral positive, second-generation current conveyor (CCII+) that constitutes part of the CFOA. In this paper, the changes on the current mode transfer function of a linear circuit composed of a subnetwork
connected to a CCII+ are determined when the CCII+ is replaced by a CFOA and a feedback component is connected from the output of the CFOA to an independent node of
. Two applications of the results are provided. A new theorem is then presented which generalizes the results. This theorem should be useful for the comparison, synthesis, and improvement of linear current-mode signal processing circuits. 相似文献
1