鏈性纖維 的英文怎麼說

中文拼音 [liànxìngxiānwéi]
鏈性纖維 英文
chain fiber
  • 鏈 : Ⅰ名詞1. （鏈子） chain Ⅱ動詞（用鏈栓住） chain; enchain Ⅲ量詞（計量海洋上距離的長度單位） cable length
  • 性 : Ⅰ名詞1 （性格） nature; character; disposition 2 （性能; 性質） property; quality 3 （性別） sex ...
  • 纖 : 纖形容詞（細小） fine; minute
  • 維 : Ⅰ動詞1 （連接） tie up; hold together; link 2 （保持; 保全） maintain; safeguard; preserve; keep ...
  • 纖維 : fibre; staple; filamentary
  1. Environmental mineral fibre mainly points crude minerals like sepiolite and palygorskite species layer - chained magnesian silicate, which have excellent physical - chemical properties and are rare environmental mineral materials in the world nowadays because of the rigor of their form conditions. the single crystals of palygorskite are mostly acicular and fibrous, 30 - 80nm of crystal diameter, and are typical crude nano - rank materials

    環境礦物纖維主要指以海泡石、坡縷石類層鏈狀鎂質硅酸鹽為主的天然礦物，具有優良的物化性能，由於其形成條件苛刻，為世界性稀缺的環境礦物材料，其單晶多為針狀、纖維狀，晶體直徑為30 - 80nm ，屬典型的天然納米級材料。
  2. 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 。
  3. Plastics piping systems. joints for glass - reinforced thermosetting plastics pipes and fittings. test methods for leaktightness and resistance to damage of flexible and reduced - articulation joints

    塑料管道系統.玻璃纖維增強式熱固性塑料管件和配件接頭.撓性和減縮型鉸鏈接頭耐泄漏和損壞試驗方法
  4. Structures of the camp fibers were also discussed. the results showed that the hydrogen bonding between the pva and caa damaged the regularity of crystalline field and the crystallinity of the fibers reduced. the cluster structures of each phase in the blend were changed and movement of the molecular chain segment was reduced

    對camp纖維結構的研究表明， pva與丙烯酸-丙烯酰胺共聚物（ caa ）共混后，大分子間的氫鍵作用破壞了pva晶區結構的規整性，導致pva在camp纖維中的結晶性明顯減弱；兩種共混組分的聚集態結構發生變化，大分子鏈段運動受到影響。
  5. The enzyme retained full activity after being treated at room temperature for 1 hour at ph between 4. 0 and 11. 5. the enzyme can be incubated at 50 for 4h with only less 50 percent loss of activity and is stable in the frozen state. when streptomyces griseus atcc14811 was cultured in 10. 3 % sucrose yeme liquid medium, production of extracellular cholesterol oxidase increased for 5 days before decrease

    利用硫酸銨鹽析及deae -纖維素離子交換柱層析提取純化灰色鏈黴菌atcc14811發酵上清液中的膽固醇氧化酶，理化性質研究表明酶作用晟適ph為8 . 0 ，最適溫度為45 ， ph穩定范圍在ph4 . 0 - 11 . 5之間，在50條件下保溫4h ，仍保留54酶活力。
  6. Applications of infrared spectroscopy in the structural study of poly ( ethylene terephthalate ) ( pet ) fibers in recent years have been reviewed. some techniques of sample preparation for infrared measurement have been introduced. characterizations and applications of the structural parameters, such as conformers contents, chain orientation, folded chain contents, and the relationship between these parameters and yarn properties haven been summarized

    回顧了近年來紅外光譜在聚對苯二甲酸乙二醇酯（ pet ）纖維結構研究中的應用，介紹了纖維制樣技術，歸納了構象含量、取向、折疊鏈含量等結構參數的表徵方法及其應用，以及這些結構參數與纖維性能間的聯系。
  7. This was due to three reasons : ( 1 ) baso4 particles were rigid inorganic particles, which could hinder the retraction of polymer molecules and decreased the elasticity. ( 2 ) a bad compatibility between baso4 and tpu, small interface adhesive force and the phase interface ready to separate. ( 3 ) during high content of baso4, the tenacity of filament mainly depended on tpu, so that the strength decreased with the content of tpu in filament down

    這是因為： baso _ 4屬于剛性粒子，阻礙tpu大分子鏈的回縮，降低了纖維的彈性； baso _ 4與tpu相容性極差，共混時容易形成相界面，界面結合力小，受外力作用時相與相間容易發生分離，使纖維的力學性能下降； baso _ 4在高含量下，纖維強度主要由聚合物的力學性能決定，隨著baso4含量的增加， tpu所佔比例下降，從而在宏觀上表現出纖維的力學性能下降。
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