Biomedical subjects

Zhao-hui Wu

Publications and source records attributed to Zhao-hui Wu.

2 recordsLinked to original sources

PubMed2003

Determination of serum astragaloside in rats fed with Buyanghuanwu dicoction using solidphase extraction, chemical derivatization and fluorospectrophotometry.

OBJECTIVE: To develop a method for determining the serum astragaloside in rats fed with Buyanghuanwu dicoction (a preparation of a traditional Chinese medicine). METHODS: A solid-phase extraction column was employed for pretreating the serum samples. The fluorescence characteristics of the extract were measured following chemical derivatization with anisic acid-sulphuric acid. RESULTS: The endogenous interference was removed by solid-phase extraction. The excitation and emission maxima of the reaction product from astragaloside and anisic acid were at 310 nm and 376 nm respectively. The linear range of the calibration curve was 1.0 to 10.0 microg/ml with r=0.999 9. The average recovery rate of the method was 97% with relative standard derivation of 2.59%(n=5). CONCLUSION: This method is rapid and highly sensitive, and useful for monitoring the concentration of astragaloside in rat serum.

Animals↗

PubMedDate not supplied

Distributed heterogeneous inspecting system and its middleware-based solution.

There are many cases when an organization needs to monitor the data and operations of its supervised departments, especially those departments which are not owned by this organization and are managed by their own information systems. Distributed Heterogeneous Inspecting System (DHIS) is the system an organization uses to monitor its supervised departments by inspecting their information systems. In DHIS, the inspected systems are generally distributed, heterogeneous, and constructed by different companies. DHIS has three key processes-abstracting core data sets and core operation sets, collecting these sets, and inspecting these collected sets. In this paper, we present the concept and mathematical definition of DHIS, a metadata method for solving the interoperability, a security strategy for data transferring, and a middleware-based solution of DHIS. We also describe an example of the inspecting system at WENZHOU custom.

Computer Communication Networks↗