Biomedical subjects

Wen-Bing Zhang

Publications and source records attributed to Wen-Bing Zhang.

3 recordsLinked to original sources

PubMed2003

Photochemical degradation performance of quinoline aqueous solution in the presence of hydrogen peroxide.

Photochemical degradation performance of quinoline aqueous solution in the presence of H2O2 was carried out, and some intermediates produced during quinoline degradation were also identified tentatively. The experimental results showed that the advanced oxidation of quinoline by UV/H2O2 process accorded well with the pseudo first order kinetics, and the dependence of concentrations of H2O2 and quinoline, and pH value on the photodegradation kinetics has been investigated in detail. It is found that the concentrations of hydrogen peroxide and quinoline have opposite effect on photodegradation kinetics. That means the photodegradation rate of quinoline increased significantly as the hydrogen peroxide concentration increasing, while the photodegradation rate decreased critically as the initial concentration of quinoline increasing. It also concluded that the photodegradation of quinoline by H2O2/UV process is more favorable under alkali solution than acid solution.

Hydrogen Peroxide↗

PubMed2002

Random walks on a ( 2+1)-dimensional deformable medium.

A model of random walks on a deformable medium is proposed in 2+1 dimensions. The behavior of the walk is characterized by the stability parameter beta and the stiffness exponent alpha. The average square end-to-end distance l approximately equals (2nu) and the average number of visited sites approximately equals (k) are calculated. As beta increases, for each alpha there exists a critical transition point beta(c) from purely random walks ( nu = 1/2 and k approximate to 1) to compact growth ( nu = 1/3 and k = 2/3). The relationship between beta(c) and alpha can be expressed as beta(c) = e(alpha). The landscape generated by a walk is also investigated by means of the visit-number distribution N(n)(beta). There exists a scaling relationship of the form N(n)(beta)approximately n(-2)f(n/beta(z)).

Journal Article↗

PubMed2002

Application of nanotechnology in biomedical sciences.

Nanotechnology, a new research field that holds enormous prospects in the 21th century, has by now gained wide application in biomedical sciences, and consequently gives rise to two new cross-disciplines, nanobiology and nanobiomedicine. The authors provide a brief summarization of the progress so far achieved in these two new disciplines.

Biomedical Research↗