堿交換作用 的英文怎麼說
中文拼音 [jiǎnjiāohuànzuòyòng]
堿交換作用
英文
base exchange-
Based on the extensive studies of subtilisin - like protease ( prl ) of metarhizium anisopliae, extracellullar serine protease is suggested to be a key enzyme involved in the fimgal penetration to invertebrates. the investigation of serine protease in the nematode infected by owvtl may help to understand the mechanism of nematophagous fimgi as biological control agents. a 3l kda serine protease was isolated and purified from the liquid culture of h rhossiliensis owvtl challenged with nematode panagrellus redivivus
本研究利用線蟲誘導下owvt - 1菌株液體發酵，通過粗分級分離、離子交換層析和凝膠過濾層析分離提純了一個分子量為31kda的絲氨酸蛋白酶，生物學測定表明其對大豆胞囊線蟲二齡幼蟲具有致死作用，同時測定了該酶理化特性，酶活力在75附近酶活力最高，隨著ph的增加酶的穩定性升高，與膽堿酯酶具有相似的ph曲線，對特異性底物aape （ suc - ala - ala - pro - glu - pna ）具有作用， ssi和ci - 2抑制該酶的活性。The results show that when the concentration of hmi ( hg2 + ) in influent water is every low, the effect of hmi removal by wbaer from dk is much better than cations exchange resins. with cations ( ca2 +, mg2 + ) at high concentration in raw water, wbaer has better selectivity to hmi in water, however the selectivity of cations exchange resins is worse. the anions in raw water such as cl - which is able to react with hmi can make cations exchange resins lose the capability of hmi removal, but it has no effect on wbaer ( d301g )
結果表明：當進水中重金屬離子（ hg2 + ）濃度較低時，弱堿性陰離子交換樹脂對飲用水中hg2 +的去除效果要明顯優于陽離子交換樹脂；當原水中含有相對較高濃度的陽離子（ ca2 + 、 mg2 + ）時，弱堿性陰離子交換樹脂對水中的重金屬離子具有很高的選擇去除性，而陽離子交換樹脂的選擇去除性卻很差；天然原水中能與重金屬離子（ hg2 + ）發生絡合反應的陰離子（如： cl ） ，可以使陽離子交換樹脂喪失了對水中微量重金屬離子（ hg2 + ）的去除作用，而對弱堿性陰離子交換樹脂（ d301g型）去除水中微量hg2 +的影響卻很小。
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