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.
Black shank, caused by the soilborne pathogen Phytophthora nicotianae, is one of the most devastating diseases affecting tobacco production in China. The most effective strategy for reducing economic loss from this pathogen is development and use of resistant tobacco varieties. Multiple sources and systems of resistance have been developed in the Western Hemisphere; however, populations of P. nicotianae...
This paper proposes an electrode line fault supervision strategy based on the high-frequency voltage standing-wave ratio (VSWR). The paper analyzes the VSWR from theoretical side of its characteristics of the lossless transmission line to the numerical characteristics of the VSWR under different electrode line operation modes. On the basis of VSWR of the high-frequency signal, the electrode line fault...
Multi-level-cell (MLC) is a critical technology to achieve low bit cost for phase change memory. However, resistance drift is an intrinsic material property that kills memory window and imposes formidable challenges for MLC. In this work, we report a radically different sensing concept that exploits the non-linear R-V characteristics of PCM that can easily accommodate 8 resistance levels in three...
Conventional phase change memory (PCM) stores information in amorphous/crystalline states that can be read out as HRS/LRS. In this work we report a radically different mode of storage that can concurrently and independently work with the conventional storage mode. By stressing the memory cell with current we can shift the threshold for RESET switching, and the resulting R-I curve can be used to store...
In filament-free magnetrons which are activated by electron emission from field-radiating cathodes its necessary level is provided by adsorption of active metal barium coming from the main palladium-barium cathode. The developed pressed palladiumbarium cathode allows to change barium evaporation speed due to change of its porosity and hence barium Knudsen flow. It will lead to emission level control...
The kink phenomenon in heterojunction bipolar transistors (HBTs) is introduced and mathematically analyzed. A novel composite transistor based on feedback theory is proposed to suppress the kink phenomenon with negligible increase in chip area and power consumption. According to the small-signal analysis, the output impedance of the composite transistor can be represented by an RC series circuit....
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.