螯合作用 的英文怎麼說

中文拼音 [áogězuòyòng]
螯合作用 英文
chelation
  • 螯 : 名詞（螃蟹等節肢動物的變形的第一對腳） chela; pincers
  • 合 : 合量詞（容量單位） ge, a unit of dry measure for grain （=1 decilitre）
  • 用 : Ⅰ動詞1 （使用） use; employ; apply 2 （多用於否定: 需要） need 3 （敬辭: 吃; 喝） eat; drink Ⅱ名...
  1. Dithiocarbamate [ s2cnr2 ( dtc ) ] and it ' s derivates were applied in chemistry 、 medical 、 petrochemical and other fields, it can coordinated with all kinds of transition metals, the anion of bidentate ligand also bridges two transition metals

    摘要氨荒酸鹽[ s2cnr2 （ dtc ） ]及其衍生物早已廣泛應用於化學、醫學、石油化工等領域，它與所有的過渡金屬都可以進行配位，形成螯合物，雙齒的陰離子也可以作為橋鏈兩個過渡金屬的配體。
  2. Study on the activating mechanism of five types of organic chelating agents for smithsonite

    五種有機螯合劑活化菱鋅礦作用機理研究
  3. It can determine the elements in water. when tta is used to extract zirconium in uranium, the combination of zirconium and tta is very strong, the concentrated acid of nitric acid and hydrochloric acid can not destroy their combination

    用tta萃取分離鈾、鋯時， tta對鋯的螯合作用很強，硝酸和鹽酸的濃酸溶液並不能破壞它們之間的整合，即對鋯的反萃取非常困難。
  4. 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 。
  5. Edta ethylenediamine tetra - acetic acid, a compound that acts as a chelating agent, reversibly binding iron, magnesium, and other positive ions

    學名為乙二胺四乙酸，是一種具有螯合作用的化合物，能夠可逆地結合鐵離子、鎂離子以及其他正離子。
  6. Both the frequency and intensity of 1146. 0cm - 1 change largely, etc. discussed and compared the mechanism of these interaction in detail we got some conclusions as following : both zn2 + and cd2 + ions can chelate with po2 - and come into being - po2 - me2 + n7 ( purine ) chelate. as to zn2 + ions, when r2. 0, the quantity of po2 - zn2 + n7 is directly linear with r. when r2. 0, zn2 + ions even can chelate with c at n3 - o2 sites and this chelation will disrupt the h - bond between gc base pairs and make the dna structure unstable. as to cd2 + ions, only when r is within 1. 0 - 1. 5 can this chelation take place and the relation of the quantity of this chelate with r is not easy to conclude

    通過對這些變化進行詳細討論和分析，我們得到了如下的結論： zn ~ （ 2 + ）和cd ~ （ 2 + ）都可以跟dna的磷酸基團螯合，形成- po _ 2 ~ - … me ~ （ 2 + ） … n7 （ g ）螯合物，但是前者的螯合跟離子濃度有很大的關系，在摩爾濃度比小於2 . 0時，螯合物的生成量跟r成正比關系，而後者的螯合跟離子的關系不是很明顯，只有當r處於1 . 0至1 . 5之間時，螯合作用才能進行，並且螯合物的生成量跟r之間沒有很明顯的關系存在。
  7. Microelement amino acid chelate is a newly additive, which was studied extensively, and the nutritional function of microelement amino acid was confirmed by many studies. but the study of copper amino acid chelate was seldom. in this study, mice were used as animal model, cu - lys and cu - met were studied as representative of copper amino acid chelate

    微量元素氨基酸螯合物是現今研究最廣泛的新型微量元素添加劑，其優秀的營養作用已為眾多的添加效果試驗所證實，但有關氨基酸螯合銅的研究報道較少，本課題以小鼠為動物模型，以賴氨酸整合銅和蛋氨酸螯合銅為代表進行了以下3部分試驗，研究飼糧銅源和銅水平對小鼠銅營養狀況及免疫功能的影響。
  8. This paper reviews the effects of al on photosynthesis, photoprotective systems, water use efficiency ( wue ), water content, carbohydrate content, mineral nutrition, organic acids, and nitrogen metabolism in plant shoot, and also the mechanisms of al detoxification ( chelation of al with small organic compounds, and isolating al in the some parts, which are insensitive to al, such as vacuoles or epidermal cells ) by al accumulators

    為此，本文綜述了鋁對植物地上部光合作用、光保護系統、水分利用效率、含水量、碳水化合物含量、礦質營養、有機酸和氮代謝的影響，並對富鋁植物的解鋁毒機制（鋁與小分子有機酸螯合和把鋁隔離在對鋁不敏感的表皮細胞和液泡內）進行了綜述。
  9. Interaction of heavy metal ions and chelating ion - exchange resin containing 8 - hydroxyquinoline

    羥基喹啉螯合樹脂與重金屬作用研究
  10. Discussion on the social educational function of the national library from constructing the harmonious society

    幾種螯合劑對鎘致小鼠肝臟毒性解毒作用比較
  11. The main mechanisms of earthworms ' resistance to metal pollutants are also elaborated : ( 1 ) its lipid antioxidative enzyme system helps relieve the stress of oxidation ; ( 2 ) compartment and immobilization of metals ; ( 3 ) process of chelating and detoxicification ; ( 4 ) lysosome and cellular plasmid are activated to restrain activity of heavy metals

    並闡述了蚯蚓對重金屬的主要耐性機制： （ 1 ）脂質過氧化保護酶系統緩解氧化脅迫； （ 2 ）分隔、固定作用； （ 3 ）螯合解毒作用； （ 4 ）溶酶體和細胞質粒抑制重金屬活性。
  12. Effect of chelator on antiolidation of matter extraced from orange peel

    螯合劑對桔皮中提取物抗氧化作用的影響
  13. Affection of chelating reagent on the fabric and rove of linen in the enzymatic scouring process

    螯合劑在亞麻酶精練工藝中的作用
  14. Under hs at 44, addition of the calcium ion chelator egta to a whole cell extract reduced the binding of the hsf to hse. re - addition of cacl2 to the sample pretreated by egta restored the binding activity of the hsf to hse obviously. dna - binding activity of the hsf was also induced by directly adding ca2 + to a whole cell extract at non - heat - shock temperature, but not by the same concentration of mgcl2

    44熱激條件下以ca ~ （ 2 + ）螯合劑egta處理玉米幼苗全細胞提取液可抑制hsf的dna結合活性，而回加cacl _ 2又可恢復hsf的活性；在非熱激條件下直接以cacl _ 2處理則可代替熱激激活hsf的活性，其中1mmcacl _ 2的作用最明顯，而相同濃度的mgcl _ 2無此作用。
  15. In cells, proteins such as metallothioneins and phytochelatins, organic acids and amino acids also play an important role in metal ion storage and detoxification

    同時，細胞內的金屬硫蛋白、植物螯合肽等蛋白質以及有機酸、氨基酸等在金屬貯存和解毒方面也起重要作用。
  16. Comparative effects of chelating agents on liver toxicity in mice induced by acute exposure to cadmium

    五種螯合劑對鎘致小鼠臟器脂質過氧化作用的影響
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