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.
This paper first analyzes the problems of the Yangtze River Delta region container shipping, followed by use of the Porter model to a detailed analysis of the competitive landscape of the Yangtze River Delta region container transport from the six areas, and concludes with a development strategy.
This paper introduces a kind of battery charger employing power MOS as complementary switches, which is controlled by integration-feedback circuit, and, the charging current changes in steps under control of micro-computer while keeps constant automatically within each step. It can charge a high-capacity battery-assembly in series connection of 18×12V. The device performances well under a wide range...
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.