critical concentration 中文意思是什麼

critical concentration 解釋
臨界濃度
  • critical : adj 1 批判的，批評的；（在某方面）有鑒定力的 （in）。2 吹毛求疵的；愛挑剔別人的 （of about）。3 ...
  • 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. It has been demonstrated that complement activating and cr2 cross - linking on b lymphocytes set up a bridge between innate and acquired immunity. the interaction of c3 and cd21 on b lymphocytes will benefit initiating immune response and regulating primary antibody response. cd21 / cd35 is important in the process of antibody avidity maturing, this is critical to b lymphocyte activation especially in the state of low antigen concentration

    現己證實補體的活化以及b細胞表面crz的交聯在先天和獲得性免疫之間架起了重要的橋梁，表現為c3與b細胞cdzi的相互作用有利於啟動抗體應答反應，並對初級抗體應答反應有調節作用： cdzi cd35對于抗體的親和性成熟具有重要作用，在抗原濃度低的情況下，對于活化b細胞是至關重要的，而且mlgm （交聯有利於特異的低親和性b細胞對t細胞依賴性抗原和t細胞非依賴性抗原產生免疫應答。
  2. Abstract : methanesulfonic acid method was used to prepare five acylated chitins. except heptanoyl chitin, four of them, i. e. acetyl chitin, propionyl chitin, butyryl chitin and hexanoyl chitin, had high degree of substitution ( from 1. 5 to 2. 0 ) and exhibited lyotropic liquid crystalline behavior and cholesteric phase. as the length of the side chain increased the critical concentration ( w / w ) somewhat increased from 0. 21 to 0. 26 because the chain rigidity dropped. the critical concentration values of all the four derivatives were much higher than that of chitin ( 0. 12 ) due to the decrease of intramolecular hydrogen bonds. the four acylated chitin can form typical banded texture after being sheared. there minimum concentrations to form banded texture of them were evidently different, varied from 0. 25 ( for acetyl chitin ) to 0. 37 ( for hexanoyl chitin ). these results further indicated that liquid crystallinity decreased while the length of flexible side substituents increased

    文摘:四種羧酰化甲殼素即乙酰化、丙酰化、丁酰化和己酰化甲殼素在二氯乙酸溶液中均呈現膽甾型溶致液晶相.臨界濃度隨側基長度增加而略有增加，衍生物的臨界濃度明顯都比原甲殼素高許多，這些規律都可以用鏈剛性的變化來解釋.四種羧酰化甲殼素在剪切時均能形成條帶織構，而且能形成條帶織構的最低濃度有明顯差別，隨側基長度增加而提高，進一步表明側基較長，液晶性減少
  3. Critical micelle concentration cmc

    臨界膠束濃度
  4. Critical micelle concentration

    臨界膠束濃度
  5. The pigment obtained was further characterised with regard to the parameters required for paint formulation ; its specific mass was determined by oil consumption and critical pigment volume concentration

    此外，針對油漆配方所要求的參數，對制得的顏料進一步檢定；其密度由耗油量和臨界顏料體積濃度決定。
  6. Each surfactant manifests a characteristic concentration ? critical micelle concentration ( cmc ) ? at which micelles of characteristic size will form

    每一種表面活性劑有一個特有的濃度? ?臨界膠團濃度（ cmc ） ? ?形成特定尺寸膠團的濃度。
  7. Critical aggregation concentration

    臨界聚集濃度
  8. Influencing factors of serum uric acid and the critical concentration of serum uric acid to prevent and treat metabolic syndrome in female inhabitants from coastal area of shandong province

    山東沿海女性居民血尿酸影響因素及與代謝綜合征防治切點的研究
  9. The critical concentration and critical particle surface area in constant rate section is studied. the floc density pa and the floc equivalent diameter da are calculated on the basis of experimental data and theoretic analysis

    研究了等速段的臨界濃度、臨界顆粒表面積；分析計算了絮團密度_ 、泥沙絮團當量直徑d _ 。
  10. 5. the injury degree of so2 on plant is a funition of the exposure time and so2 concentration. the injury critical concentration depends on the exposure time, and the time length is closely relevant to so2 concentration

    植物受so _ 2的傷害程度是暴露時間和so _ 2濃度的函數，其中傷害的臨界濃度取決于暴露時間，而其時間的長短與so _ 2濃度密切相關。
  11. The critical concentration of mannitol stress is 0. 8 - 0. 9mol - l - 1. the maximal level of aba accumulation is attached after 5 hours " treat with 0. 9mol - l - 1 mannitol solution. cell wall plays important roles in tobacco cells perception to osmotic stress

    滲透脅迫誘導aba積累的水平與脅迫處理的濃度和時間相關，脅迫處理的有臨界濃度為0 . 8 ? 0 . 9mol ? l ~ （ - 1 ） ， aba積累水平在脅迫處理5小時后達到最大。
  12. For chitosan, when the concentration of chitosan is under 0. 1mg / ml, the structure of molecular chain can be observed by afm. at the same time, the refined structure of lyotropic liquid crystal of chitosan and the changes of structure were studied. films with liquid crystalline texture can be prepared from diluted solutions which concentration is lower than critical concentration of liquid crystal

    對于殼聚糖（ chitosan ） ，通過afm直接對殼聚糖進行分子結構水平的觀察研究，發現在濃度低於0 . 1mg ml的稀溶液中用afm可以清楚觀察到糖鏈間形成的環狀或螺旋結構，以及鏈內側枝繞合排列的樹枝狀結構，這種現象是由於糖鏈間和糖鏈內的氫鍵締合所致。
  13. Some cubic perovskites are good cases in point such as srtio3 and ktao3. experimental results show that when ba2 + and li + are doped into the above materials respectively and at the same time the impurity content is higher than their critical concentration, the impurity induced ferroe lectric phase transition occurs

    Srtio _ 3和ktao _ 3是典型的量子順電體，實驗表明當兩者分別摻雜ba ~ （ 2 + ）和li ~ +且雜質濃度超過各自的臨界濃度時，順電相不再穩定，出現由雜質導致的鐵電相變。
  14. The his - tagged peacl - gfp purified from the supernatants could polymerize into green fluorescent filamentous structures with diameter, length and shape being identical to that of muscle f - actins, which could be labeled by tritc - phalloidin ( a specific agent for staining actin microfilaments ), and were identified as having a 9 nm diameter by negative staining, corresponding with that of the muscle f - actins ( 7 - 10 nm ). under polymerization conditions, his - tagged peacl - gfp polymerized with kinetics similar to those of skeleton muscle actin, that is, an obvious lag nucleation period at the beginning of polymerization and an s - like typical polymerization curve could be obtained. the critical concentration is 0. 75 umol / l near to that of chicken muscle actin ( 0. 56 umol / l ) under the same condition

    熒光標記結合熒光顯微觀察表明：從可溶性上清中純化的his - taggedpeac1 - gfp聚合形成的微絲不僅可以直接在熒光顯微鏡下觀察，也可被微絲的特異標記物鬼筆環肽所標記，而且其直徑、長度以及形態上與已知的聚合肌動蛋白熒光絲一致；電鏡負染的結果進一步證實其直徑為9nm ，與傳統微絲直徑相當（ 7 ? 10nm ） ；聚合曲線有明顯的停滯期，為典型的s型聚合曲線，聚合臨界濃度為0 . 75 mol l ，這一結果與已有報道相似。
  15. 1 process critical parameters ( e. g. conveyor speed, flux concentration, temperature distribution in the process, etc. ) are well identified, measured, tracked, and controlled with records

    對製程重要參數（如:速度，松香密度，焊接過程的溫度分佈等）都能清晰界定，測量，追蹤和控制，並作有效記錄
  16. In this study they attempted to predict the critical micelle concentration ( cmc )

    在研究中，他們嘗試著預測臨界膠態粒子濃度（ cmc ） 。
  17. Based on the concentration polarization models with conventional filter cake resistance and shear - induced diffusion, the critical point simulating model on cross flow microfiltration process in particulate suspension was developed

    摘要以傳統的濾餅層阻力和與誘導擴散相結合的濃差極化模型為基礎，建立了剛性顆粒懸浮液體系錯流微濾過程中模擬臨界點的數學模型。
  18. Anionic and non - ionic surface active agents - determination of the critical micellization concentration - method by measuring surface tension with ring

    陰離子和非離子表面活性劑臨界膠束濃度的測定圓環測定表面張力法
  19. With the increasing of proton concentration, number of proton transport increases at first and then decreases after a critical value

    隨著質子濃度的增加，質子輸送數隨之增加，達一定值后又隨之下降。
  20. For the first time, the oriented percolation model is applied to analyzed the critical particle concentration of 0. 37 and which is characterized an electrorheological fluid and independent to the external electric field

    同時得出，分形維數（ d _ f ）與外加電場性質無關，但隨微粒的體積百分數增加而趨近於dla生長模式的特徵值1 . 8 。
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