degree of substitution 中文意思是什麼

degree of substitution 解釋
代換的次數
  • degree : n. 1. 程度；等級。2. 階層，地位。3. 學位，學術。4. 度，度數。5. 【數學】次；冪。6. 【音樂】階，度，音程。7. 【語法】（形容詞和副詞的）級。8. 【法律】親等。
  • of : OF ＝Old French 古法語。
  • 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. As to the separation of p - xylene / m - xylene, in order to blend polymer hydrophobe with p - cd which is preferential to adsorb p - xylene, etherified p - cd was synthesized using benzyl chloride ( phch2cl ). the influences of etherification conditions on the reaction conversion and the degree of substitution of etherified p - cd were investigated. the reaction conversion increases with the increasing of molar ratio of phcr ^ cl : p - cd and the concentration of p - cd

    對于px mx體系的分離，為使對px具有優先絡合能力的一環糊精（ cd ）能夠與油溶性高分子共混，本文採用williamson合成法運用氯化芐（ phch _ 2cl ）使-環糊精（ - cd ）醚化，並由元素分析結果，計算出醚化產物的取代度和轉化率，系統地考察了反應條件對轉化率和取代度的影響。
  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. The effects of substitution degree on retrogradation and anti - mycotic were less

    取代度的變化對沉降性和抗黴菌能力影響不大。
  4. The effects of substitution degree on paste viscosity, clarity, freeze - thaw stability, retrogradation, gelatinization difficult or easy degree, salt tolerance, sucrose tolerance and anti - mycotic characteristics of colocasia esculenta schott starch phosphate ester were studied

    摘要研究了香芋澱粉磷酸脂的糊粘度、透明度、凍融穩定性、沉降穩定性、糊化難易程度、耐糖、耐鹽和抗黴菌能力。
  5. The results showed that the dosage of wet - method prepared was more than that of extrusion if the modified starch got the same degree of substitution

    結果表明：要得到相同取代度的變性澱粉，濕法的原料消耗量遠遠大於擠壓法。
  6. Abstract : highly substituted cationic starch was prepared by microwave radiation in dry process. in this preparation, starting materials mixed with high speed stirres, potassium hydroxide used as catalyst and discontinuous heated by microwave radiation at temperature 60 85 to give 0 35 0 50 degree of substitution cationic starch the conversion of cationic reagent reached 95 the product is soluble in water it is pasted when it meets water

    文摘:微波干法制取高取代度的陽離子澱粉，用高速攪拌機混合物料，氫氧化鉀做催化劑，間歇式微波介電加熱溫度不超過85 ，陽離子試劑的轉化率可達95 ，產品取代度0 35 0 50 ，常溫下遇水糊化，在水中有較好的溶解性。
  7. His first idea was to get rid of the term next to the highest in degree by a substitution.

    他的頭一個想法是用置換法消去比最高次項次數小一次的項。
  8. The results show that, ( 1 ) under observable contracts, suppliers ' horizontal merger will have adverse impact on customers, while the impact of retailers ' horizontal merger on customers depends on the degree of product substitution : if the degree of substitution is high, it will have favorable effect on customers, otherwise, it will have adverse impact on customers ; ( 2 ) under unobservable contracts, suppliers ' horizontal merger generally will have unfavorable impacts on retailers and customers, while the effect of retailers ' horizontal merger on customers depends on the degree of product substitution : if the degree of substitution is high, it will have favorable effect on customers, otherwise, it will have adverse impact on customers

    結果表明： （ 1 ）當合約可觀察時，供應商橫向兼并對消費者產生不利影響，而零售商橫向兼并對消費者產生的影響取決于產品替代性程度大小，若產品替代性程度較高，則將產生有利影響，反之將產生不利影響； （ 2 ）當合約不可觀察時，供應商橫向兼并一般將對零售商與消費者產生不利影響，而零售商橫向兼并對消費者產生的影響取決于產品替代性程度大小，若產品替代性程度較大，則兼并將對消費者產生有利影響，否則將對消費者產生不利影響。
  9. During back substitution 2503 elements encounter a load applied to a degree of freedom that does not have any stiffness. the elements have been identified in element set warnelembacksubnostiffstep1inc1

    這個錯誤是什麼意思？如何解決？字面上看一個荷載加到一個沒有剛度的節點上怎麼解釋？謝謝！
  10. Study on the cationic starch with high degree of substitution used as flocculant

    高取代度陽離子澱粉用作絮凝劑的研究
  11. This paper assesses and analyses disaster degree of flood - waterlogging disaster by use of three - factor influence assessment method. it establishes the synthetic disaster index model and analyzes the in fluence degree of different disaster factors on synthetic disaster condition by use of the method of continuous substitution. the study results show as follows. the variation of disaster degree has the features of quasi - period and of development by stages ; the factors of flood disaster condition are the main influence factors on variation of synthetic disaster condition ; the influence direction of different factors are not all the same, and the factors that enlarge disaster condition show the new characteristics of flood - waterlogging disaster ; because the waterlogging disaster is serious da ybyday, the control of waterlogging must be strengthened

    運用三因子聯立評估法，評定了洞庭湖區洪災，澇災和洪澇災的災度，進行了相應的分析;構建了洪澇災情指數，並運用聯環替代法對各災情因素的影響進行了分析.分析得出:洞庭湖區洪澇災度具有階段性和準周期性等特徵;洪災災情因素是綜合災情變化的主導影響因素;各災情因素影響方向不完全一致，其中起放大作用的因素反映出洪澇災害的新特點;澇災日趨嚴重，應加強澇災治理
  12. Innovation in product of investment fund breeding some purposes and deep background connects close with the changes of economic and financial environment and market demand, which has also a close relationship with epoch, investors " preferences, degree of perfection and openness, substitution product of financial investment and innovation in financial instrument continuously emerging in international markesu. v birth of any new fund product reflects character of epoch and is the result of it

    投資基金的品種創新是出於一定的動機並有著深刻的背景，與經濟、金融環境變化以及市場需求密切聯系著，也與時代、投資者的偏好、市場完善與開放程度、金融投資替代產品和國際上不斷出現的金融工具創新密切相關。每一個基金新品種的出現，都打上了時代的烙印，都是時代的產物。
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