King Lun Kwong

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Invasive species can monopolize resources and thus dominate ecosystem production. In this study we estimated secondary production and diet of four populations of Pomacea canaliculata, a freshwater invasive snail, in wetlands (abandoned paddy, oxbow pond, drainage channel, and river meander) in monsoonal Hong Kong (lat. 22°N). Apple snail secondary(More)
The golden apple snail (Pomacea canaliculata), a native of freshwater wetlands of South America, has invaded many Asian countries and grazed heavily in agricultural and wild areas. Common carp (Cyprinus carpio) has been proposed as a biological control agent against this snail, but little is known about its impact on non-target aquatic plants and animals.(More)
In a downhill conveyor system, the drive motors become generators feeding real power to the electrical system. A general method using the cascade network concept and a digital computer is proposed to study the conveyor motors' operation in the motoring and generating modes. By use of the proposed method, a long downhill conveyor system with many stages of(More)
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