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.
E-Commerce facilitates our daily life and is playing a very important role in today's business. With the development of software and network technique, people have more and more request on E-Commerce especially for the non-mainstream business. Individualized identification is one of the most important supporting for the clients who want to purchase some non-mainstream goods from web. In this paper,...
The kinetic, equiLibrium and thermodynamics of Cr(VI) adsorption from aqueous solution on cetylpyridinium bromide (CPB) modified zeoLite were investigated. CPB modified zeoLite displayed a good affinity to Cr(VI) in aqueous solution, and its Cr(VI) adsorption capacity decreased with the increase of the temperature. The kinetics of adsorption of Cr(VI) were discussed using the pseudo-first-order and...
Orb-web has many good features, such as refinement, nature and ultra-light structure. What is more, it is so super flexible and tensile that it withstands the impacts of strong wind or insect. At the same time, the spider can locate preys rapidly and accurately and capture them successfully. Face the communication network model, this paper describes the formation and structure of orb-web in brief,...
This paper proposes chopper-cycloconverters with simplest topologies, minimum devices and simple control modes for energy saving in motor systems. Typical waveforms and control regulations are presented. Passive freewheeling unit is introduced for reduce active device and simplifying the control method. Theoretical and simulation analyses show the significance in auxiliary small size applications...
A novel cycloconverter based on chopper scheme is proposed, which is entirely different from the former cycloconverters based on phase-shift control, so leading to higher power factor than that of the latter, also in price of minimum power device number. Two kinds methods are derived for determining the relationships between Duty-Cycle and other parameters by means of different Area-Equivalent criteria...
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.