Electric power communication network is an important part of power system, which plays a vital role in the operation of power network.This paper established an index system of electric power communication network and proposed a diagnostic method of electric power communication network system based on extension rating.This evaluation method can not only evaluate the impact factors of the electric power communication network, but also can diagnose and rate the whole electric power communication network.
To study the effects of chrysotile on the activities of some enzymes for xenobiotics metabolism.UICC chrysotile (UC) and China Mangya chrysotile (MC) asbestos fibers were used at different doses (0, 25, 50, 100, 200 mg/L) to study its effects on the activities of cytochrome P4501A1 and glutathione S-transferase (GST) in A549 cell line. Also, the effects of chrysotile on the activities of CYP1A1 and GST induced by benzo(a)pyrene were studied.The activity of EROD increased slowly with the increasing dose of UC, as A549 cells were incubated with UC for 24 h, and EROD activity increased by 40% at a dose of 200 mg/L UC. However, activity of EROD decreased by 32% with 48 h incubation at the same dose, indicating that lower dose of UC and short time could induce the activity of EROD in A549 cells, whereas higher doses and long time could inhibit its activity. MC exhibited a multiphasic effects on the activity of EROD, whether at a dose of 25 mg/L for 24 h or 48 h all gave the strongest induction, 1.86 times or 1.28 times as controls, respectively. However, EROD activity decreased with the increases in MC doses and incubation time, with the lowest as 35% of the controls. The effect of UC on GST activity was not so obvious, with the highest as the increase in its activity by 20%. The highest induction of MC to GST activity was at a dose of 25 mg/L, 2, 5 times as that in controls. With the increases in its doses, effects of MC on GTS activity became inhibition from induction, like that on EROD activity. MC at a dose of 200 mg/L could lower the activity of GST by 18.7%. A549 cells were incubated with chrysotile fiber for 24 h firstly, and then incubated with benzo(a)pyrene to induce the activities of EROD and GST. The results showed that neither UC nor MC could affect the activity of EROD induced by benzo(a)pyrene. However, UC at a dose of 200 mg/L and MC at 100 mg/L could increase the activity of GST induced by benzo(a)pyrene.Chrysotile at different doses or its different types showed varied effects on the activities of EROD and GST in A549 cell lines, probably because of different physicochemical characteristics and surface activity of two kinds of asbestos.
The paper analyzes current researches on energy saving and evaluation of energy efficiency as well as the status of their applications. Based on the in-depth analysis and detailed study on energy consumption and energy efficiency, this paper put forward the concept of target energy and the concepts of working energy consumption, early energy consumption and extended energy consumption, expounding their relationship meanwhile; gives definition of working energy efficiency and extended energy efficiency, as well as makes detailed research and mathematical analysis on their physical meaning and essential law. On the basis of those indexes, a new evaluation system for the effect of energy saving measures is established, after which the practical calculation and application of extended energy consumption and extended energy efficiency are expounded, using the example of upgrading the rural power grids. The new evaluation system established in the paper can reflect the overall energy-saving effect more scienctifically and actually, leading to new recognization of energy-saving measures' factual effect. And it is conducive to promote new ideas and new indexes for more perfect evaluation of energy saving. Also, the new evaluation system has some significance to guiding energy-saving measures and optimizing the effect of energy saving to an extent, conducive to the progress of energy-saving technology and the improvement of energy-saving level.
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