side substitution 中文意思是什麼

side substitution 解釋
側鏈取代作用
  • side : n 1 （左右上下等的）邊，側面；（事物內外等的）面，方面；（人、物等的）旁，旁邊。2 〈數〉（三角形...
  • substitution : n. 1. 代，代用，代替，更替，置換。2. 【化學】取代；【數學】代換；代入；【法律】預定繼承人；【語法】詞的代用。adj. -al ,-ary adj.
  1. 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
  2. We present some classical theories about interprocedural analysis and optimization, including call multigraph construction, inline substitution and procedure cloning, and interprocedural information ( side - effect summary sets, alias information and interprocedural constant )

    然後，我們對過程間分析和優化的一些經典的理論，包括調用圖的構造，內聯替換和過程克隆，過程間信息（副作用摘要集合，別名和過程間常量）作了介紹。
  3. The pocket accommodating the aromatic ring of phenylalanine is formed predominantly by hydrophobic side - chains, including those of ile10, ile13, prol50, leul75, leul79, phe209, ser211 and val221 ; whilst the amino group and carboxylate group of phenylalanine is coordinated by asp6, asp7, gln151 and ser180. the n - terminal region is found to be important to the function of arog. point mutation reveals that residue substitution of ilelo to ala10 leads to desensitization in the presence of 1 mm phenylalanine, simultaneously, exhibits a dramatic decrease in enzymatic activity

    綜合前人的研究和本研究工作的實驗數據，得出以下結論： 1 ）在arog的反饋抑制位點供苯丙氨酸結合的疏水口袋由asp6 、 asp7 、 ile10 、 ile13 、 pro150 、 gln151 、 leu175 、 leu179 、 ser180 、 phe209 、 ser211和val221等12個氨基酸殘基構成； 2 ）苯丙氨酸結合的疏水口袋分為兩個區域，與苯丙氨酸的苯環發生疏水作用的區域由ile10 、 ile13 、 pro150 、 leu175 、 leu179 、 phe209和val221的側鏈構成，而asp6 、 asp7 、 gln151和ser180的側鏈構成了與苯丙氨酸的氨基和羧基相互作用的區域。
  4. Because of taxation in connection with the loss of the property right and profit and the effect of substitution of taxation, taxing or not in one side depends on the existing economic circumstance

    由於征稅活動不僅直接關繫到相關主體財產權的損益，而且由於征稅所具有的替代效應，因此，一種稅的開征于否，一方面既離不開現實的經濟環境，也必須有相應的理論依據。
  5. A recent survey on the side effects related to herbs containing aa revealed that there are unclear factors in local chinese herbal market that lead to inappropriate or misuse of aa herbs. examples included the erroneous substitution of the herb aristolochia mollissima hance for herba solani lyrati and radix aristolochiae fangchi for radix stephaniae tetrandrae. according to medical documents, prolonged and excessive use of herbs containing aa is associated with kidney failure and cancer of the urinary tract

    根據最近調查病人服用含馬兜鈴酸的中藥材后出現不良反應的結果顯示，香港中藥?場上含馬兜鈴酸的中藥材品種確實存在一些不明朗因素，以致錯用或誤用含馬兜鈴酸的中藥材，例如，誤將含有馬兜鈴酸的尋骨風代替了白英，或將含馬兜鈴酸的廣防己代替了防己。
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