A semantic-based retrieval method was proposed to extract answer sentences from tax regulations and cases. Firstly, a domain knowledge base was employed to generate semantic annotations for questions, regulations and cases. Secondly, a filtering system was developed for the removal of irrelevant cases from answer candidates. In addition, a semantic similarity measurement method was employed for answer extraction. Finally, a rank model was proposed for the optimization of the retrieved results. In order to validate the proposed method, a series of experiments were performed on real-life dataset. Experiment results show noticeable improvement in accuracy and performance compared to the baseline methods.

The Uyghur language has various inflectional affixes, complex structures and phonetic changes. The authors propose a collaborative analysis method for Uyghur morphology at character level. It includes three procedures: morpheme segmentation, morphological annotation and reduction of phonetic changes. The main characteristics of this method is to use a composite tag to represent the morpheme boundaries, annotations and phonetic changes. In addition, character sequence annotation is used to train the model. Experimental results show that the accurency of morpheme segmentation, morphological annotation and reduction of phonetic reaches 96.39%, 92.78% and 99.79% respectively. The overall accuracy of the system reaches 92.59%.

Palladium (II) ion imprinted polymers (IIP) were prepared by precipitation polymerization method using PdCl₄^2– as template, 4-vinylpridine(4-VP), 2-(allylthio)nicotinic acid (ANA), 2-Acetamidoacrylic acid (AAA) as functional monomer, respectively. In the polymerization method, the polymerization mixture included ethylene glycoldimethacrylate (EGDMA, cross-linking monomer), 2,2-azobisisobutyronitrile (AIBN, initiator) and methanol (porogen). The effects of different preparation conditions on the preparation of palladium ion imprinted polymers were investigated by the type of functional monomers, the dosage of functional monomers and crosslinking agents. The optimization results showed that compared with ANA and AAA, 4 -VP could form a stable complex with PdCl₄^2– in the molar ratio of 4:1 with the largest binding constant and the best imprinting effect, which was the best choice for the synthesis of palladium (II) ion imprinted polymer. Furthermore, the adsorption experiment proved the adsorption capacity of 4-VP on its corresponding imprinted polymers in accordance to the ratio of template, functional monomer and cross-linking monomer as 1:4:40 reached a maximum of 5.042 mg/g.

An up-flow bioreactor loaded with carriers of patented functional polyurethane foams (FPUFS) was used to treat sulfide from hydrocarbon-containing wastewater. Impacts of the factors, including aeration, hydraulic retention time (HRT), influent sulfide concentration, pH and influent petroleum hydrocarbon concentration, were investigated on biological sulfide oxidation. The results show that sulfide removal rate is stable at above 80% in 300mL/min of aeration, 90min of HRT, influent sulfide concentration below 300mg/L, pH between 6.1 and 7.8. Withio the range of experimental petroleum hydrocarbon concentrations, there was no prominent removal of TOC in the reactor. Petroleum hydrocarbon had no significant effect on sulfide removal rate, with variations less than 5%, however, sulfate transformation rate declined obviously with the increasing petroleum hydrocarbon concentration.