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We investigated the effects of silicon (Si) application on diurnal variations of photosynthetic and transpiration physiological parameters in potted rice (Oryza sativa L. cv Nanjing 45) at the heading stage. The plants were subjected to two UV-B radiation levels, i.e., reference UV-B (A, ambient, 12.0 kJ m−2 day−1) and elevated UV-B radiation (E, a 20 % higher dose of UV-B than the reference, 14.4 kJ m...
For help solving the air pollution problem caused by the mass increasing of Sulfur Dioxide And Nitrogen Dioxide automobile exhaust gas, we have designed a Zigbee wireless monitoring network to monitor the Sulfur Dioxide And Nitrogen Dioxide in automobile exhaust gas, and build this monitoring system in hardware and software. Also, we use a Artificial Fish Swarm Algorithm to optimize the network covering...
Massive historical data are stored in chlorine gas monitoring network. So that prediction algorithm of data mining is used to dig historical data not only can make the redundant data reused, but also can forecast the network trend and improve the network early warning model. The chlorine gas monitoring wireless sensor network based on ZigBee was designed in this paper. Then Fletcher-Reeves algorithm...
This paper presents a method to compute unstable equilibrium points on the transient stability boundary of power systems with detailed generator modeling. According to the stability region theory of nonlinear dynamic systems, relations of unstable equilibrium points on different stability region boundaries in periodic nonlinear dynamic systems are deduced. It is proved that, when all loads are modeled...
Inter-area oscillation analysis is very important in power system stability research. There are many factors influencing inter-area oscillation. The relationships between various factors and inter-area oscillation are very complex. Most current studies on the relationships are quite limited, without enough theoretical analysis. Using theoretical deduction, this paper focuses on the frequency of inter-area...
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