降解性高分子 的英文怎麼說

中文拼音 [jiàngjiěxìnggāofēnzi]
降解性高分子 英文
degradable polymer
  • 降 : 降動詞1. （投降） surrender; capitulate 2. （降伏） subdue; vanquish; tame
  • 解 : 解動詞（解送） send under guard
  • 性 : Ⅰ名詞1 （性格） nature; character; disposition 2 （性能; 性質） property; quality 3 （性別） sex ...
  • 高 : Ⅰ形容詞1 （從下向上距離大; 離地面遠） tall; high 2 （在一般標準或平均程度之上; 等級在上的） above...
  • 分 : 分Ⅰ名詞1. （成分） component 2. （職責和權利的限度） what is within one's duty or rights Ⅱ同 「份」Ⅲ動詞[書面語] （料想） judge
  • 子 : 子Ⅰ名詞1 （兒子） son 2 （人的通稱） person 3 （古代特指有學問的男人） ancient title of respect f...
  • 高分子 : [化學] high polymer; macromolecule高分子化合物 polymer compound; macromolecular compound; high mo...
  • 高分 : greater value
  1. Accordingly, using graph theory and operating experience abroad for reference, it firstly brings forward a new method of voltage rectification which based on pilot bus with voltage control area in view of the weak coupling among every vca ( voltage control area ), using decomposing method of multi critical value, it realizes the eliminating vinculum of every vca. and then, the rectification starts by pilot bus voltage of every vca. so the resolution of whole power net is diverted into calculating smaller sub - net

    由於各個電壓控制區之間無功電壓的弱耦合性，利用多閥值分解的分區演算法，實現區域間的解耦，然後根據各個子網路的主導節點的電壓進行校正，從而把求解整個網路的問題轉化為求解各個小的子網路，降低了網路維數，減少了無功設備控制動作次數，提高了校正成功率，縮短了計算時間。
  2. Its main contributions include the following several aspects : firstly, the dissertation constructs the mathematic model of short baseline orientation determination using two geostationary satellites and analyses the applicable conditions of carrier phase interferometry. orientation determination precision is analysed in depth through both the conventional linearized method and monte - carlo computer simulation method, and the mathematical simulation results show that the linearized method has the shortcoming of fairly low elevation error analysis precision in high latitude area so as not to be very appropriate there. by analyzing the definite factors influencing orientation precision, the dissertation develops the concept of orientation dilution of precision, which uncovers the internal cause of exotic error behavior of bi - satellite orientation, and has important guiding significance for practical engineering applications

    本文系統地研究了基於「北斗一號」衛星載波相位干涉測量原理實現地球靜止雙星定向的相關技術，主要研究成果包括以下幾方面:首先，建立了利用兩顆地球靜止軌道衛星進行短基線定向的數學模型，分析了載波相位干涉測量的適用條件;採用傳統的線性化解析法及蒙特卡洛隨機模擬法兩種途徑對雙星定向的精度進行了詳細分析，數學模擬結果表明在高緯度地區線性化解析法由於俯仰角誤差分析精度略有下降而不太適合;在分析定向精度確定性影響因素的基礎上，提出了雙星定向精度衰減因子odop的概念，揭示了雙星定向誤差特殊表現的內部機理，對實際工程應用具有重要的指導意義。
  3. The recombinants were constructed by transforming ppic9 a - xynb into p. pastoris gs115. the assay results revealed that the xylanase gene xynb was overexpressed and secreted effectually in p. pastoris. in 3l fermentor the expression level of xylanase xynba exceeded 1200iu / ml and the expressed xylanase had normal bioactivity. the molecule weight of xynba was determined as about 31kd which is higher than 23kd of original enzyme xynb from streptomyces olivaceoviridis a1. xynbb was gotten by deglycasylation of xynba, whose molecule weight returned to 23kd. we comparised the enzymatic properties of xynba expressed in p. pastoris, xynbb deglycasylated from xynba and xynb produced from streptomyces olivaceoviridis al : there was little difference among the three enzymes on optimal ph, the optimal ph of xynb and xynba were both 5. 2, the optimal ph of xynbb was 5. 0 ; the optimal temperature of xynb and xynba were both 60 c, while the optimal temperature of xynbb was 50 ? ; because of glycosylation the thermal stability of xynba was better than xynb and xynbb ; the specific activity of xynba and xynbb were 883. 88iu / mg and 832. 5hu / mg respectively, which were both lower than 2814. 45iu / mg of xynb ; the km values of xynb and xynba were similar to each other which were 21. 56 ( g / kg ) and 20. 87 ( g / kg ), while the km value of xynbb was 27. 10 ( g / kg ) ; the fmax of xynba and xynbb were 4568umol / mg. min and 5329umol / mg. min respectively which were lower than 27623 umol / mg. min of xynb ; additionally all of the three enzymes did not display cellulase activity. they all had well resistance to pepsion and trypsin, and were not sensitive to metal iron, surface active agent and chelating agent. the analysis of different xylans enzymatic hydrolysate revealed : by xynba, that the main constitutions of enzymatic hydrolysate of birch wood xylans were xylotriose and xyloquaiose, which account for 68. 43 % and 16. 50 % respectively, additionally there was 11. 79 % of xylobiose ; the main constitutions of enzymatic hydrolysate of corncobs xylans were xylobiose and xylotriose, which account for 81. 78 % and 11. 55 %. the result indicated that this xylanase was a kind of 1, 4 - b - d - xylanohydrolase and was fit to used in industrial procession of xylooligosacc harides

    進一步對xynba進行了脫糖基化處理得到xynbb ，其分子量恢復到23kd ，證明xynba是糖基化蛋白。通過對畢赤酵母重組表達的木聚糖酶xynba 、脫糖基化的木聚糖酶xynbb以及橄欖綠鏈黴菌a1所產原酶xynb之間酶學性質的比較發現：三種酶的最適ph差異不大， xynb和xynba均為5 . 2 ， xynbb為5 . 0 ； xynb和xynba的最適溫度均為60 ， xynbb降為50 ：在耐熱性上， xynba由於糖基化作用熱穩定性明顯高於未糖基化的xynb和xynbb ； xynba和xynbb的比活性分別為883 . 88iu mg和832 . 51iu mg ，明顯低於原酶的比活2814 . 45iu mg ； xynb和xynba的km值相當，分別為21 . 56 （ g kg ）和20 . 87 （ g kg ） ，而xynbb的km值較大為27 . 10 （ g kg ） ； xynba和xynbb的vmax相差不大，分別為4568 mol mg ? min和5329 mol mg ? min ，明顯低於xynb的27623 mol mg ? min此外三種酶均無纖維素酶活性，對胃蛋白酶和胰蛋白酶有很好的抗性，且對作用環境中的各種離子、表面活性劑、螯合劑不敏感。通過對不同木聚糖的酶解產物的糖份分析發現：以樺木木聚糖為底物時，酶解產物主要為木三糖和木四糖，含量分別為68 . 43和16 . 50 ，另外還含有11 . 79的木二糖；以玉米芯木聚糖為底物時，酶解產物主要為木二糖和木三糖，含量分別為81 . 78和11 . 55 。
  4. The new high effective water - reducing agent act - fdn has characteristic of reactivity, it ca n ' t dissolve in water but do in alklia. in the concrete, it decompounds slowly and gives out sulfonate group which has dispersity, this can make the high effective water - reducing agent available for a long time, therefore it can reduce slump loss

    研製的新型高效減水劑act - fdn ，具有反應性的特點，不溶於水但溶於堿，在混凝土這樣的堿性環境下可以緩慢分解釋放出具有分散性能的陰離子磺酸基，使高效減水劑能夠持久發揮作用，從而達到了降低坍落度損失的目的。
  5. And the results of calculation and numerical simulation indicate, without increasing the intrinsic collector - junction area of power devices, collector - combed structure helps to raise the intrinsic heat - dissipating area and base ' s perimeter, improve heat - dissipating method of each cell of the chip, enhance the distribution uniformity of junction temperature and current of each cell of the chip, reduce the thermal resistance and raise the dissipation power pd and output power p0, fairly well relax the contradiction among frequency, out - put power and dissipation power of the devices, and further improve the devices " property against second breakdown

    而計算分析和二維數值模擬分析結果表明：梳狀集電結（基區）結構在不增加器件本徵集電結面積的條件下，增大了器件的本徵散熱面積和基區周長，改進了每個子器件單元內的散熱方式，提高了單元內結溫和電流分佈的均勻性，降低了器件的熱阻，增大了器件的耗散功率和輸出功率，較好地緩解了目前傳統結構中頻率與功率、功耗的矛盾，並有利於改善器件抗二次擊穿的性能。
  6. It has not only the characteristic of petrochemical plastics but also has the biodegradability, biocompability and degradable product without toxin. these biologic polymers are new kinds of environment - friendly material that provide a new way to resolve white pollution and can be used as scaffold material in medical tissue engineering

    多聚羥基烷酸是一類由生物合成的結構簡單的高分子聚合物，它不僅具有石化塑料的特性，而且具有生物可降解性、生物相容性、降解產物無毒性的特性，是一種環境友好型的生物材料。
  7. Fluorescence power transfer function, three - dimensional point spread function ( 3d - psf ) and three - dimensional optical transfer function ( sd - otf ) for the various fluorescent wavelength of the two kinds of fluorescence confocal scanning microscopy are calculated in this paper by using fourier imaging theory. the results show that the fluorescent wavelength has influence on imaging property of confocal microscopy such as spatial cut - off frequency, resolution and 3d - otf. there is a different missing - cone in the 3 - d space of otf when the ratio of excitation wavelength to fluorescent wavelength decreases

    本文在sheppard和gumin等人的理論基礎上，利用fourier光學成像理論，討論了不同熒光波長對單光子和雙光子共焦顯微鏡成像特性的影響，導出了單光子和雙光子共焦顯微鏡的熒光功率傳輸函數、三維脈沖響應函數和三維光學傳遞函數，得到了它們在不同激發波長與熒光波長比值時具體的表達式，並且通過數值計算，得到了它們的曲線圖，結果表明：隨著激發波長與熒光波長比值的增加，焦斑的橫向分佈和縱向分佈變窄，橫向解析度和縱向解析度提高，系統的成像效果變好，當激發波長與熒光波長的比值下降到一定程度時，可以看到不同程度的失錐現象。
  8. When using the method of periodically renewing electrolyte, the average current efficiency is 47. 3 % ( ii ) the solubility of k2feo4 in the solution of naoh is higher than that of the same concentration of koh solution and both of them become low with the growth of the alkaline concentration. the solubility of k2feo4 in the mixed solution of koh and naoh was influenced by both of common ions effect and salting - out effect and the influence of common ions effect is more heavy. the rate of methanol ' s reacting with k2feo4 is proportional to the content of water in the solid k2feo4. the stability of the potassium ferrate solution is far below the solid

    （ 2 ） k _ 2feo _ 4在naoh溶液中的溶解度高於同濃度koh溶液中的溶解度，且溶解度均隨著堿溶液濃度的增大而降低； k _ 2feo _ 4在koh和naoh混合堿溶液中的溶解度，受到同離子效應和鹽效應的共同影響，且同離子效應的影響更大；固態k _ 2feo _ 4被甲醇還原的速度與甲醇或固態k _ 2feo _ 4的含水量成正比； k _ 2feo _ 4溶液的穩定性遠遠低於固態k _ 2feo _ 4 ，少量水的存在，可促使k _ 2feo _ 4按溶解?分解?再溶解?再分解的過程分解。
  9. In some bacteria the pha in the dry cell can be up to 70 % wt by fermentation, but the cost is high. this class includes phb ( poly ( 3 - hydroxybutyrate ) ) and phbv ( poly ( 3 - hydroxybutyrate - co - 3 - hydroxyvalerate ) ). these polymers present the advantages of biodegradability and biocompatibility over other thermoplastics with useful mechanical properties

    Pha （聚羥基脂肪酸酯）是一類從菌體中分離出來的新型生物高分子材料，由於其直接從生物體中提取，因而具有良好的生物相容性、生物可吸收性和生物可降解性能，近年來引起可降解高分子材料研究人員的極大興趣。
  10. A solid - state shear compounding technology based on pan - milling ( s3c ) has established, by which the graphite with weakly combined structure are exfoliated and then compounded with pp at nanoscale. the obtained pp / graphite nanocomposites have greatly enhanced electrical and thermal conductivity. their structures and properties were characterized by analysis of particle size and distribution, sem, tem, xrd, the electrical conductivity, the thermal conductivity and heat - decomposition temperature etc. by taking advantages of the layered inorganic fillers with a weak interaction between layers ( e. g

    磨盤碾磨剪切力場使pp分子鏈斷裂，相對分子質量減小，石墨的導熱和潤滑性能抑制pp的降解和粉碎，使pp / yep250 （膨脹石墨250倍）復合粉磨盤碾磨固相剪切復合技術及導電導熱pp /石墨納米復合材料的制備與性能體中， pp分子運動活性提高，結晶能力增強，為pp在熔融加工中進一步向己剝離的石墨片層間擴散，形成納米復合結構創造了條件。
  11. The set of these eigenvalues can be regarded as the eigenvalues of primary system approximately. this method not only can control the scale of the block - decoupling subsystems, but also achieves the reduced - order eigenvalue calculation for multi - machine power system. so this method can avoid the dimension disaster in the qr and calculate all the eigenvalues of large power system with the effect of damping windings considered

    這一方法可以控制分塊解耦子系統的規模，實現多機系統特徵值的降階計算，避免特徵值qr演算法的「維數災難」 ，同時為採用計及發電機阻尼繞組作用的詳細模型計算大型電力系統的全部特徵值、提高電力系統小擾動穩定分析的準確性提供了一種方法。
  12. Poor thermal stability as a bottleneck has limited the development of liquid crystal photo - alignment technique. the intrinsic reason is that the photosensitive polymer has large space resistance and decreases the reaction degree of the directional photo - polymerization. the effective solution is focused in the increase of orientational order of photo - alignment film

    光控取向技術瓶頸問題是穩定性差，其根本原因是光敏高分子空間位阻太大，定向交聯的反應度太低，有效解決方法應是降低位阻，提高定向交聯度和取向膜分子鏈段的有序度。
  13. According to the current problems such as low quantum efficiency. limited available sun energy spectrum range, and inefficient recovery, resulted from the practical using of photocatalysis, using the narrowband semiconductor cds ( eg = 2. 5ev ) to compound with tio2 seems to be an effective solution. since it will not only enlarge the region of the absorption with the proper narrow band of cds but also improve the photodegradation efficiency on account of the band overlap of the two, which makes the photo induced electron and holes separate more easily

    本文針對光催化技術應用中存在的tio _ 2光催化量子效率低，吸收利用太陽能光譜范圍有限，催化劑回收困難等問題，通過窄禁帶半導體cds （ e = 2 . 5ev ）的復合，對納米tio _ 2進行了改性研究，一方面，由於cds的窄禁帶寬度可以擴展薄膜的光譜吸收范圍，另一方面，由於能帶的交疊，提高了光生電子和空穴的分離效率，從而提高了薄膜的光催化降解效率。
  14. By using the principle of the redundant system design in the engineering field and based on the multi - channel electronic model, this paper constructed a new kind of redundant multi - payment electronic payment model that has both high transaction efficiency and good reliability, analyzed the channel selecting method by combining the traits of the electronic payment and wireless communication technology, designed the corresponding user operation flow, worked out the calculation formula of different payment informal ion arrival rate by different redundant design methods and effects on the perceived risk and acceptance degree of the end - user, compared the integrated performance of different kinds of payment models, and solved the decreasing problem of transaction efficiency in the multi - channel payment model

    摘要利用工程領域的冗餘設計原理，在多通道電子支付模型的基礎上構建了同時具備高交易效率和高安全性的冗餘多通道電子支付模型，結合電子支付及無線通信技術的特點分析了冗餘通道的選擇方法，設計了相應的用戶操作流程，給出了不同的冗餘情形下的支付信息到達率計算公式、以及對用戶感知風險和接受度的影響，對比了各種支付方式的綜合性能，解決了在多通道支付模型中出現的交易效率降低的問題。
  15. Poly ( malic acid ) is a new kind of water - soluble polymer with favorable biodegradability and biocompatibility

    聚蘋果酸是一種具有生物降解性和生物相容性的新型水溶性高分子。
  16. Through the flux / retention experiments it was shown that when the applied pressure rises, both volume flux and rejection increase, too ; and that the higher the feed salt concentration, the lower rejection and volume flux. the charged mosaic membranes could permeate mono - valent and bi - valent inorganic salts, but reject the low - molecular - weight organics. furthermore, sem was used to observe the surface and the cross section of the composite membrane

    另外，膜性能表徵結果顯示:隨著操作壓力的增加，膜通量及膜對電解質的截留率均趨增加;而隨著原料液濃度的增加，通量和截留率都有所降低;膜對低分子有機物和無機電解質混合體系（如:亞硝基紅鹽與naci混合體系;蔗糖與nazso ;混合體系等）的選擇性較高，能實現其有效分離。
  17. Chitin is a kind of polyglucosamide extracted from shells of crustacean and cell walls of fungus. it is one of the richest natural macromolecular compound on the earth. it is biodegreeable, without poison and possesses well biocompatibility

    是從甲殼動物外殼和真菌的細胞壁中提取的一種天然多糖，是地球上最豐富的天然高分子化合物之一，無毒，可生物降解，具有良好的生物相容性。
  18. The materials such as pla, pu and so on are used at present. while these materials are all acidic ones. and the degradation products of such materials may induce inflammation

    已經採用的材料多為聚乳酸、聚酯類材料，由於這些高分子材料降解后產物為酸性物質，容易引起非感染性炎癥。
  19. The molecules of soft sections of sbs elastomers are not satuated and is easily to be oxidized. it is highly possible to create degradation by manufacturing in high temperature and high shearing rate

    Sbs軟質段分子段有不飽和鍵，容易被氧化，高溫或高剪切率加工產生材料降解degradation可能性高
  20. Conclusion : this method has low cost, mild reaction condition, easy treatment and high output, and it can get the expected chitosan

    結論：中性條件下雙氧水降解殼聚糖成本低，反應條件溫和，易處理，產量高，可得到預期分子量的殼聚糖。
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