The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
To investigate the influence of acid on thermal aging of oil-paper insulation, formic acid and stearic acid are added in the oil to achieve 0.3mgKOH/g. The time taken by the acid to reach balance in the oil-paper insulation is measured, under different temperature of 20°C, 70°C and 100°C, as well as different initial moisture contents of 0.2% and 3.0%. After the distribution of acid in paper reaches...
With the advantages of high lighting temperature, easier degradation and renewable, the natural ester-paper insulation has been employed in distribution transformer, gradually. During the operation, the natural ester-paper insulation will deteriorate under the effect of hot, electrical field and moisture. So it is very important to assess the insulation status of ester-paper insulation in transformers...
Pond is an ideal study target which can be regarded as an enclosed ecosystem with little external disturbance such as pollution discharge. The aim of the study is to obtain further understandings of freshwater eutrophication mechanism through a one-year's intensive observation and monitoring program for a shallow pond in Chongming Island, China. The result showed that NO3-N, PO4-P and DTP kept in...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.