freeze-concentration 中文意思是什麼

freeze-concentration 解釋
凍結濃縮法
  • freeze : vi （froze; frozen ； freezing）1 冷凍，凝固，結冰。2 凍僵，冰冷。3 戰栗，顫抖；〈美口〉木立不動...
  • concentration : n. 1. 集中。2. 【化學】提濃，蒸濃，濃縮；濃度；稠密度；【礦物】汰選，選礦，富化。3. 集中注意，專心。
  1. The primary results showed : using m199 as diluents containing 20 % bovine serum, it is better to freeze the cells slowly freezing at fist then increase freezing speed ( for example, from 0 to - 6 freezing speed is about - 0. 05 a minute, from - 6 to - 40, freezing speed is about - 0. 5 a minute ), studies on effect of various concentration of dmso demonstrate that about 12. 5 % dmso gave the highest post - thaw percentage of viable cells. the concentration of bovine serum had no different effect on the percentage of the viable embryo cells of misgurnus auguillicaudatus. the embryo cells derived 6 from the later stage of blastula offish is more resistant to the cryogen than the cells of early stage of blastula. the cells preserved in liquid nitrogen at - 196 were thawed and cultivated, a few cells were found adhere to the surface of culture vessel when the percentage of viable cell was more than 30 %. the cells in only two culture vessels were found to proliferated and gave rise to many small morphologically undifferentiated cells

    研究初步表明:以細胞培養液m199 （含2既的小牛血清，常規量雙抗）為凍存稀釋液對泥鰍胚胎細胞冷凍保存宜採取先慢后快的方式（例如，從0一一6 ，凍存速度為一0 . 05 / min ，再以一0 . 5 / min的速度從一6一一40 ） ; dmso的保護效應濃度為12 . 506左右;小牛血清的濃度對泥鰍胚胎細胞的成活率影響不明顯;囊胚晚期細胞抗凍性比中早期強;通過對不同批次的凍存細胞解凍培養，解凍后成活率為30 %以上細胞培養數天後均有少數細胞貼壁，但只發現兩瓶培養細胞有明顯增殖現象產生許多未分化的小細胞。
  2. The results indicated that skim milk ( 10 % ~ 15 % ) and fructose ( l0 % ~ 15 % ) had preferable protective efficacy on freeze - drying l. casei shirota, which could keep more than 90 % cell alive after 12 months of storage, and their protective efficacies could be improved with the increase of addition concentration

    結果表明， 10 % ~ 15 %脫脂奶、 10 % ~ 15 %海藻糖對乾酪乳桿菌代田株有較好的保護效果，在12個月的保藏期內，凍干保藏的菌種存活細胞總數保持90 %以上，並且隨著保護劑濃度的增加其保藏效果更好。
  3. Aim at the shortage in actual application that the frp pipe flange joint with the steel pipe and steel parts, in consideration of the special advantage of the adhesive boned joint, put forward the method that the steel flange adhesive boned steel pipe or steel part after the steel flange instead the frp pipe flange, or the frp pipe adhesive boned direct with the steel and steel part, it can reduce the stress concentration problem that cause from the different of the descend speed and the hot bulge or freeze coefficient in the applied process. thus reduce the damage number and the maintenance costs of the piping, so this method can have the greatly actual application value

    針對玻璃鋼管道與鋼管及鋼管件之間法蘭連接方式在實際應用中的不足之處，考慮到膠接連接的獨特優勢，提出如用鋼法蘭代替玻璃鋼法蘭與玻璃鋼管道膠接后，再與配套的鋼管及鋼管件進行連接，或玻璃鋼管道直接與鋼管（件）進行膠接連接，則可減少玻璃鋼管道在應用過程中與鋼管（件）連接后因沉降速度及凍脹系數均不同而產生的應力集中問題，減少管道的損壞次數及維護成本，有很大的實際應用價值。
  4. The reinforced concrete structures in the relevant projects in the western china are to be damaged from the erosion of salt ions with high concentration and the multi - action of both the freeze - thaw and the dry - wet cycles, and then the normal concrete therein is often heavily damaged from the superimposed effect of all these damages

    摘要在我國西部地區工程中鋼筋混凝土建築物要經受高濃度鹽離子侵蝕、凍融和干濕交替的多重作用的破壞，會表現出損傷超疊加效應，使普通混凝土在短期內即遭嚴重破壞。
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