activity-gradient 中文意思是什麼

activity-gradient 解釋
活動梯度
  • activity : n. 1. 活動；活躍；動作；活動力；能動性。2. 活性；放射性。3. 機能，功能。4. 〈美國〉機構。5. 〈pl. 〉 活動范圍。
  • gradient : adj. 1. 傾斜的。2. 【動物；動物學】步行的，能步行的。n. 1. 〈英國〉（道路的）傾斜度，坡度，坡路。2. 【物理學】梯度，陡度，（溫度、氣壓等的）變化率，梯度變化曲線。
  1. The paper studied three aspects of extracelluar enzymes in sediments of the tidal flat wetland, namely 1 ) the distibution of five sorts of extracellular enzymes in sediments in the east end of chongming island along the elevation gradient or community succession series, the relationships between the activities of enzymes and the ecological factors, and functions of extracellular enzymes in the process of community succession ; 2 ) the effects of the heavy metal ions and edta on the activity of alkaline phosphatase in sediments of the east end of chongming island by adding and removing of heavy metal ions, discussing whether the activities of extracellular enzymes could be taken as the indicators for the environmental status ; 3 ) the variations of the activities of extracellular enzymes in sediments in the east end of hengsha island after the discarding clay

    本文以長江口典型濕地?崇明東灘為例，首次研究了沿高程梯度或沿植被演替系列沉積物中堿性磷酸酶等五種胞外酶活性的空間分佈規律，分析了胞外酶活性與環境因子的相互關系及其產生機制，討論了胞外酶活性在濕地植被演替中的作用。同時以崇明東灘沉積物為對象，運用重金屬離子的添加和去除等方法，研究了重金屬離子對沉積物中堿性磷酸酶活性的影響，利用胞外酶活性的變化探討了崇明東灘重金屬污染的狀況。此外，本文還研究了橫沙東灘吹泥試驗工程對沉積物環境因子和胞外酶活性的影響並進行了對比分析。
  2. We used gradient dilution renaluration ( renaturation buffer : 0. 14mol / l tris - hcl ph8. 0. 10mmol / lgsh, 2mmol / lgssg. 5 % glycerol, 0. 02mol / l l - arg ) and gel filter renaturation by sephacral s200 to refold the inclusion body respectively. to get pure nk4, it was purified by gst affinity gromatochraphy. to detect the angiostatic activity of nk4 in vivo, it was tested using cam

    6 ）誘導溫度對pg廠x一4t一l一nk4表達菌株bl21表達目的蛋自的影響分別進行了25 』 c 、 300c 、 37溫度狀態卜，以iptg化學誘導，發現其均可表達，全菌表達量: 37最高，其次為30誘導時。
  3. Along the elevation gradient or succession series, the activity of alkaline phosphatase increased gradually. besides the surface sediments * alkaline phosphatase of sediments in every vegetation area has higher peak activity and vmax, but a lower km at the depth of 20 - 30cm. lt was proved that there was a remarkably active zone of the alkaline phosphatase in the sediments besides the surface layer

    而各植被樣帶沉積物中堿性磷酸酶活性、 vmax除在表層有一高值以外，各植被樣帶在20 - 30cm處有一較高峰值，而km值在該處有一較低值，說明除了表層之外，在亞表層有一個令人注意的堿性磷酸酶活躍區。
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