In view of the teaching reform of cell engineering, this paper puts forward the application of diversified teaching methods: reconstructing the teaching content of cell engineering with the method of discussion case study, and combining theoretical analysis with practice. Through the tutorial system of cell engineering, tutorial system diversified teaching methods and informationization of teaching tools, this study can help teachers successfully complete teaching tasks and improve students' comprehensive quality and practical skills.

The agricultural sector is facing major challenges, which can affect the entrepreneurial farming activities. One of the major challenges is the adoption of practices leading to sustainable agriculture. Therefore, it is relevant to investigate the knowledge of the main actors in agriculture: the farmers. The main purpose of this study was to determine the knowledge of the farmers towards sustainable agricultural practices so that the farmers can adopt sustainable agricultural practices more effectively for producing more. So it is needed to ascertain the knowledge of the farmers. Farmers bear knowledge on sustainable agriculture which they acquired from different sources. By this study it was trying to identify that whether the knowledge is sufficient to adopt sustainable agricultural practices. This study was completed through filling up questionnaire by interviewing 90 respondents who were selected using the simple random technique. The major finding of this study was that about 85% respondents of the study area had low to medium knowledge on sustainable agricultural practices. Therefore the findings suggest that the respondents were not bearing enough knowledge to practice sustainable agriculture.

The population of Sunda porcupine (Hystrix javanica) is tends to decrease year by year, since it’s become rarely found in nature. This study was conducted to determine the histological structure and distribution of estrogen and progesterone receptors in the ovary of pregnant and non-pregnant Sunda porcupine. Five ovaries of pregnant and nonpregnant Sunda porcupine were used as samples. The ovaries were fixed in Bouin's solution, processed with paraffin method, and cut into 5μm thickness. The tissue slides were dyed using immunohistochemical staining method to determine the distribution of estrogen and progesterone receptors. The results were analyzed descriptively. Immunoreactivities of estrogen and progesterone receptors in the ovaries of non-pregnant Sunda porcupines were detected in the atretic follicle cells and theca internal cells of developing follicle, whereas in the ovaries of pregnant Sunda porcupine, immunoreactivities of estrogen and progesterone receptors only found in atretic follicle cells. Luteal cells of corpus luteum appeared to be immunoreactive against progesterone receptor antibodies with weak intensity in the ovary of pregnant Sunda porcupine. This study was confirming that there was little difference in expression of estrogen and progesterone receptors in ovaries of non-pregnant and pregnant Sunda porcupine.

The sweet potato is cultivated in all regions of Côte d'Ivoire. It’s consumed in various forms (vegetable, fried, boiled, foutou, etc.). However, many factors such as the gradual loss of traditional varieties limit the production of this crop. To cope with this problem, the country has introduced new high-performance varieties. The introduction of these varieties requires selection. It is within this framework that this study was carried out in order to assess the yields and the dry matter rate of seven (7) varieties of sweet potato (Ipomoea batatas (L), lam., 1793) in the region from Bouake, Côte d’Ivoire. The results obtained showed that the weight of the tubers, the number of tubers and the shape of the tuberous roots of the varieties Covington and CIP were the highest. These two varieties can therefore be recommended to farmers.