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Many real-life data sets are incomplete, i.e., some attribute values are missing. Mining incomplete data sets is truly challenging. Among many methods of handling missing attribute values applied in data mining. We will discuss two approaches: rough sets combined with rule induction and the CART system based on surrogate splits. The main objective of this paper is to compare, through experiments,...
An activated carbon derived from sewage sludge was prepared by orthogonal test, and it had a BET surface area of 300.90 m2/g. A new dechlorinating agent using the activated carbon as the main active component was studied. The agent had a breakthrough chlorine content of 19.38% and a saturated chlorine content of 37.32% (under conditions of 200 ??, 3000 h-1 space velocity, 0.45~0.90 mm particle size...
Deresination process, which usually consume a large quantity of water, is widely applied to enhance the addded value of pine wood processing utilization. In order to reduce the consumption of water resource, deresination technology on Pinusmassoniana wood was investigated. Results showed that the influence of the degreasing temperature on the of the intermediate deck and the core layer of Pinusmassoniana...
Microcystines (MCs) are well known as its hepatotoxins produced by blooms of toxin cyanobacteria (blue-green algae) abundant in surface water used as drinking water resource and have drawn attention of environmentalists world over by the adverse health effects. The affects and the reaction character of ClO2 removing MC-RR were studied, and the results show that ClO2 can remove MC-RR effectively. When...
Much waste wood causing pollution and energy waste was produced in the processing of Pinus massoniana wood. However, hemicellulose extracted from Pinus massoniana waste can be transformed into bioenergy by means of pyrolysis, gasification, liquefaction, etc. Therefore, effects of deresination technology on extracting hemicellulose from Pinus massioniana were investigated by orthogonal and the whole...
The TG-DTA-DTG thermal analysis technology was applied to study on combustion experiments of cornstalk and wheat straw.. Combustion characteristics of the two biomass was analyzed according to combustion characteristics parameters such as ignition temperature ,peak temperature at maximum weight loss rate, burnout temperature etc. By analyzed the combustion process of the two with the heating rate...
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