Biomedical subjects

Shiguang Li

Publications and source records attributed to Shiguang Li.

3 recordsLinked to original sources

PubMed2006

[Biological characteristics of Metarhizium anisopliae var. major and its virulence to white grubs].

With Beauveria brongniartii and Metarhizium anisopliae var. anisopliae as the reference, this paper studied the biological characteristics and invading ability of Metarhizium anisopliae var. major, a new variety separated from white grubs. The results showed that the optimal culture condition of M. anisopliae var. major was similar with that of other entomopathogenic species, and the optimal temperature was 25 degrees C. Among the three test media, PPDA was the most appropriate one, followed by SDAY and Czapek. M. anisopliae var. major had a stronger virulence than B. brongniartii at lower temperature, with an accumulative mortality of white grubs being 88.23% and 76.47%, respectively, after treated with soil and through spraying, suggesting that M. anisopliae var. major had a good prospect to widely apply in field.

Animals↗

PubMed2005

Compact optical roll-angle sensor with large measurement range and high sensitivity.

A simple and effective optical roll-angle sensor based on a magnetic garnet single crystal is demonstrated. The measurement is based on the principle that, when linearly polarized light whose polarization varies alternately in two orthogonal directions passes through a polarization analyzer, the transmitted optical intensity varies. The output voltage from an optical detector located after the analyzer can be used to determine the roll angle. The chief advantages of the sensor are that it is compact, flexible, low cost, and power effective and provides a fast response. Most importantly, the sensor is insensitive to various fluctuations such as optical intensity, photodiode responsivity, and temperature and to vibrations. This performance is most advantageous in long-distance or long-term measurements. Experimental results have shown that the angular resolution is 0.01 degree in a +/-30 degree range.

Journal Article↗

PubMed2003

MTBE adsorption on all-silica beta zeolite.

All-silica beta zeolite is shown to be effective for MTBE removal from water. The silica beta was prepared directly from gel, and it was more effective than dealuminated beta for MTBE adsorption. Water and 2-propanol adsorption isotherms showed that the all-silica beta is more hydrophobic than dealuminated beta. The amount of MTBE adsorbed on all-silica beta increased linearly with MTBE concentration from 9.4 to 590 microg/L.

Adsorption↗