In order to maintain the cleanliness of the centrifuge room (hereinafter referred to as the room) and ensure the efficiency and safety of the centrifuge, special rules must be established.
When the centrifuge is pre-cooled, close .......
One depends on soil fertilization: different types of trace elements contained in different soils are not the same, only to understand the lack of a certain element in the soil, the corresponding application of a certain element of fertilizer can be effective. At present, the soil content .......
The culture mode of Penaeus vannamei is still the traditional breeding mode. With the further development of breeding, its drawbacks are increasingly manifested. The traditional breeding mode has been difficult to significantly increase the yield per unit area, the comparative efficiency o.......
(1) Single-layer fluidized bed dryer: The single-layer fluidized bed dryer has simple structure, convenient operation, large production capacity and wide application. It is generally used in the case where the bed particles are at a st.......
Do soil preparation to choose the leeward sunny, deep fertile soil, well-drained sandy soil land as a seedbed. Apply 2000-3000 kg of acre per acre, deep plowing, spraying general tree maintenance and disinfection, reduce the source of pathogens, after the site preparation to do, and 1 mete.......
Isolation of human prostatic epithelial cells
1. A small piece of tissue from each specimen was removed and minced.
2. The tissue was digested with collagenase overnight.
3. To remove the collagenase and the majority of the stromal cells, th.......