Cadmium sulfide (CdS) nanoparticles (NPs) were synthesized by using banana peel extract as a convenient, non-toxic, eco-friendly 'green' capping agent. Cadmium nitrate and sodium sulfide are main reagents. A variety of CdS NPs are prepared through changing reaction conditions (banana extracts, the amount of banana peel extract, solution pH, concentration and reactive temperature). The prepared CdS colloid displays strong fluorescence spectrum. X-ray diffraction analysis demonstrates the successful formation of CdS NPs. Fourier transform infra-red (FTIR) spectrogram indicates the involvement of carboxyl, amine and hydroxyl groups in the formation of CdS NPs. Transmission electron microscope (TEM) result reveals that the average size of the NPs is around 1.48 nm.

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The dehydration processing of banana stems was carried out to obtain plant fiber, and some structure characteristics were tested. An experimental design with different equipment that was studied to discover the effect of the dehydration rate of banana stems. We are trying to extract natural fibers from Hainan immense resources of biological materials. The paper also relates to an equipment for slicing the banana stem into elongated strips and pressing the strips. The result shows that the dehydration rate of banana stem which pressed by Sugarcane Mill (SM) was 57.0%(roots), 58.0% (central) and 51.0% (sheath) respectively. The samples which pressed by Open Roll Mill (ORM) have a lower level of dehydration rate (29.3% of roots, 12.1% of central, 13.5% of sheath, respectively).

Eupatoriurn odoratumaerial parts were extracted with ligarine and the volatile constituents isolated were analyzed by gas chromatography (GC) and gas chromatography/mass spectrometry (GC/MS). Volatile constituents were isolated from the ground aerial parts ofE. odoratumby ligarine extraction and analyzed by gas chromatography (GC) and gas chromatography/mass spectrometry (GC/MS). As a result, a total of fifteen compounds represented all of the extract were identified, amongst nine of fifteen compounds were sesquiterpenes. Esters and sesquiterpenes were found to compose three major chemotype accounted for 58.58% and 30.80% of the constituents, respectively. The main components was demonstrated to be dibutyl phthalate (39.73%), 11,14,17-eicosatrienoic acid, methyl ester (13.20%), (S)-spiro [4.nona-1,6-diene (6.80%), 1,2-benzenedicarboxylic acid, bis (2-methylpropyl) ester (5.65%) andcis-Z-α-bisabolene epoxide (5.56%). In addition, some pharmaceutical components such as α-cadinol and germacrene D were discovered. Antioxidant activity of the extract was assessed by the free radical scavenging (DPPH). The study offers theoretic basis for pharmaceutical utilization of the medicinal plantE. odoratum.

Sugar mud has been analyzed to prepare porous ceramics with clay, and the principal chemical component of sugar mud was tested to be CaCO3. The optimal ratio of sugar mud and clay came out to be 1:2. The porous ceramics were sintered at temperatures of 1 000°C for 1.5h, whose major crystalline phases were found to be Porzite, Anorthite and Cristobalite, have showed good performances. The final products with pore size ranging from 1 to 10μm, a porosity of 26.38%, a water-absorption of 17.30%, and mechanical strength of 22～26 MPa could be applied in the area of permeable porous ceramics.