电力系统分析综合程序 PSASP( Power System Analysis Software Package)是国内进行电力系统计算和仿真经常使用的软件 ,其结果也为大家所普遍接受。 Mathworks公司新近推出的MATLAB5.2中的 Power System Blockset( PSB)是专门为电力系...电力系统分析综合程序 PSASP( Power System Analysis Software Package)是国内进行电力系统计算和仿真经常使用的软件 ,其结果也为大家所普遍接受。 Mathworks公司新近推出的MATLAB5.2中的 Power System Blockset( PSB)是专门为电力系统设计的仿真分析软件 ,其功能十分强大。文中对 3个电力系统典型模型的潮流和稳定分别进行了计算 ,分析表明这两种电力系统仿真软件得到的结果几乎完全相同 ,但也存在一定的差异 ,对其原因给出了初步的解释 ,并介绍了应用 MATLAB进行电力系统仿真时经常用到的一些方法。展开更多
The efficiency of phytosynthetic bacteria (PSB) to improve the water quality in saline alkali ponds was studied, the result showed that (1) PSB application could increase the content of DO, NO\+-\-3\|N and effective ...The efficiency of phytosynthetic bacteria (PSB) to improve the water quality in saline alkali ponds was studied, the result showed that (1) PSB application could increase the content of DO, NO\+-\-3\|N and effective phosphorus (EP) in ponds; (2) the changes of COD were not evident, just effective in later period after PSB application; (3) PSB application could decrease the contents of NH\+-\-4\|N (NH\-3\|N), NO\+-\-2\|N ; (4) PSB application could improve the structure of the effective nitrogen (EN) and EP, stimulate the growth of phytoplankton, and increase primary productivity, and finally increase the commercial profits of ponds because of the increase of EP and the decrease of EN contents; (5) the effect exerting speed of PSB was slower, but the effect sustaining time was longer; (6) the appropriate concentration of PSB application in saline alkali wetland ponds was 10×10 -6 mg/L, one time effective period was more than 15 days. So PSB was an efficient water quality improver in saline alkali ponds.展开更多
对于PSB音响，笔者最早是通过香港的媒体知道这个品牌的，只是一直无缘对它有更深的了解，这次在本刊编辑部的安排下才得以见到并采访了PSB音响的主事者（也是公司首席设计师）Paul Barton先生。通过与他的交谈才知道PSB这个缩写来自于...对于PSB音响，笔者最早是通过香港的媒体知道这个品牌的，只是一直无缘对它有更深的了解，这次在本刊编辑部的安排下才得以见到并采访了PSB音响的主事者（也是公司首席设计师）Paul Barton先生。通过与他的交谈才知道PSB这个缩写来自于创始人Paul Barton和他太太（Paul and Sue Barton）名字的缩写，同时也可以理解为People，Sound＆Business（人，声音和事业）。展开更多
文摘电力系统分析综合程序 PSASP( Power System Analysis Software Package)是国内进行电力系统计算和仿真经常使用的软件 ,其结果也为大家所普遍接受。 Mathworks公司新近推出的MATLAB5.2中的 Power System Blockset( PSB)是专门为电力系统设计的仿真分析软件 ,其功能十分强大。文中对 3个电力系统典型模型的潮流和稳定分别进行了计算 ,分析表明这两种电力系统仿真软件得到的结果几乎完全相同 ,但也存在一定的差异 ,对其原因给出了初步的解释 ,并介绍了应用 MATLAB进行电力系统仿真时经常用到的一些方法。
文摘The efficiency of phytosynthetic bacteria (PSB) to improve the water quality in saline alkali ponds was studied, the result showed that (1) PSB application could increase the content of DO, NO\+-\-3\|N and effective phosphorus (EP) in ponds; (2) the changes of COD were not evident, just effective in later period after PSB application; (3) PSB application could decrease the contents of NH\+-\-4\|N (NH\-3\|N), NO\+-\-2\|N ; (4) PSB application could improve the structure of the effective nitrogen (EN) and EP, stimulate the growth of phytoplankton, and increase primary productivity, and finally increase the commercial profits of ponds because of the increase of EP and the decrease of EN contents; (5) the effect exerting speed of PSB was slower, but the effect sustaining time was longer; (6) the appropriate concentration of PSB application in saline alkali wetland ponds was 10×10 -6 mg/L, one time effective period was more than 15 days. So PSB was an efficient water quality improver in saline alkali ponds.
文摘对于PSB音响，笔者最早是通过香港的媒体知道这个品牌的，只是一直无缘对它有更深的了解，这次在本刊编辑部的安排下才得以见到并采访了PSB音响的主事者（也是公司首席设计师）Paul Barton先生。通过与他的交谈才知道PSB这个缩写来自于创始人Paul Barton和他太太（Paul and Sue Barton）名字的缩写，同时也可以理解为People，Sound＆Business（人，声音和事业）。
