Papers by Author: Zeng Liang Yu

Abstract: Activated sludge process is generally applied on biological wastewater treatment. The Activated sludge Model No.1 (ASM1) is a mathematical description of biochemical processes in the reactor for nitrogen and chemical oxygen demand removal. ASM1 model was used to simulate the concentrations of components in leaving water with single-stage completely mixed CSTR (continuously stirred tank reactor) assumed. According to the concentrations of components in entering water of published data, curve simulation results of SNH and SNo show that the nitrogen removal process follows the nitrification-denitrification principle. And the steady-state results of 10 kinds of selected components indicate the simulation of the components concentration of leaving water is relatively accurate,and the nitrogen removal effect is obvious. The simulation system can provide effective technical support for wastewater treatment of actual plant.

Abstract: This paper summarizes the development of the research and application of ion implantation biotechnology on plant, animal and microorganism varieties Improvement, and it also includes the contemporary effects and utilization of ion implantation, and the application of ion implantation on trans-gene plant. In 1980s, cooperated with Anhui Academy of Agriculture Sciences, the ion implantation was applied for crops’ improvement by Plasma Physics Research Institute of the Chinese Academy of Sciences, and made greater progress in both practice and theory, which attracted many scholars inside and outside. By using ion implantation, extensive researches had been made in different materials including plant, animal and microorganism on different levels. With combination of physics and biology, as a new cross subject and a unique technology system, the ion implantation biotechnology came into being, and created more dramatically economic and social benefit in crops improvement by transferring exogenous gene. This paper summarizes the development of the research and application of ion implantation biotechnology.

Abstract: Low-energy ion beam has widely been applied in the field of research on genetic modification since the 1980’s in China. It has been shown, in principle and practice, that ion beam, as a new mutagenic source, has many outstanding advantages: lower damage rate, higher mutation and wider mutational spectrum. Many new varieties of crops and microbes have been bred using these techniques and used in agricultural and industrial production. Meanwhile the method of transferring genes assisted by ion beam has also been developed. Scientists in China have begun to pay a big attention to study on ion beam biology. Up to now there have been seven key laboratories of ion beam bioengineering of Chinese Academy of Sciences and Chinese Provinces to be in succession created. Recent advances in research on ion beam biology have opened new areas of study in the field of life sciences, such as the role of low energy ions in the chemical origin and the interplanetary molecules forming, the health risk of low-energy particle radiation in the environment.