Nine enclosures (5 m x 5 m) were built in a Fenneropenaeus chinensis culture pond of Rushan Gulf in April, 2001. The probiotics and BIO ENERGIZER solution were applied for disparate treatments. Variations of alkaline ...Nine enclosures (5 m x 5 m) were built in a Fenneropenaeus chinensis culture pond of Rushan Gulf in April, 2001. The probiotics and BIO ENERGIZER solution were applied for disparate treatments. Variations of alkaline phosphatase ac- tivity (APA) and its relationship with the contents of C, N and P in sediments were studied. Results show that APA of sedi- ments increases from 3.096 nmolg-1min-1 to 5.407 nmol g-1min-1 in culture period; the bacteria biomass is not the only factor to determine APA; the contents of total P and total organic carbon have a significant positive correlation with APA, while that of total nitrogen has a negative correlation. In addition, the contents of inorganic P and organic P are not regular with APA. By comparison, TOC shows a more significant coherence with APA, meaning that organic pollution in sediments af- fects APA remarkably.展开更多
The traditional teaching mode belittles practice and emphasis theory, regardless of the students’ enthusiasm and interest in learning. However, the educational objective of the higher vocational colleges is to cultiv...The traditional teaching mode belittles practice and emphasis theory, regardless of the students’ enthusiasm and interest in learning. However, the educational objective of the higher vocational colleges is to cultivate practical talents. Therefore, the reformation and innovation of the higher vocational education teaching mode must be carried out. This research analyses the effect of autonomous cooperative teaching mode in higher vocational colleges. The reformation of teaching mode consists of the following three parts first, the autonomous cooperative teaching needs to improve the existing education system, to lay the foundation for the work of education. Secondly, to strengthen the capacity of building and promote the full implementation of the project is essential. Finally, strengthen the construction of educational resources, and enrich the connotation of the carrier. Proved by practice, the independent collaborative teaching mode can not only improve the learning atmosphere, but also improve student achievement, but also do well to students’ all-round development and enhance their comprehensive quality. It is worthwhile to promote and implement this mode in higher education institutions.展开更多
基金the Major State Basic Research of China(Grant No.G1999012011) the National High Technology Research and Development Program of China(2002AA648010).
文摘Nine enclosures (5 m x 5 m) were built in a Fenneropenaeus chinensis culture pond of Rushan Gulf in April, 2001. The probiotics and BIO ENERGIZER solution were applied for disparate treatments. Variations of alkaline phosphatase ac- tivity (APA) and its relationship with the contents of C, N and P in sediments were studied. Results show that APA of sedi- ments increases from 3.096 nmolg-1min-1 to 5.407 nmol g-1min-1 in culture period; the bacteria biomass is not the only factor to determine APA; the contents of total P and total organic carbon have a significant positive correlation with APA, while that of total nitrogen has a negative correlation. In addition, the contents of inorganic P and organic P are not regular with APA. By comparison, TOC shows a more significant coherence with APA, meaning that organic pollution in sediments af- fects APA remarkably.
文摘The traditional teaching mode belittles practice and emphasis theory, regardless of the students’ enthusiasm and interest in learning. However, the educational objective of the higher vocational colleges is to cultivate practical talents. Therefore, the reformation and innovation of the higher vocational education teaching mode must be carried out. This research analyses the effect of autonomous cooperative teaching mode in higher vocational colleges. The reformation of teaching mode consists of the following three parts first, the autonomous cooperative teaching needs to improve the existing education system, to lay the foundation for the work of education. Secondly, to strengthen the capacity of building and promote the full implementation of the project is essential. Finally, strengthen the construction of educational resources, and enrich the connotation of the carrier. Proved by practice, the independent collaborative teaching mode can not only improve the learning atmosphere, but also improve student achievement, but also do well to students’ all-round development and enhance their comprehensive quality. It is worthwhile to promote and implement this mode in higher education institutions.
