ion activity 中文意思是什麼

ion activity 解釋
離子活度
  • ion : n. 【物理學】離子。 positive [negative] ion正[負]離子。
  • activity : n. 1. 活動；活躍；動作；活動力；能動性。2. 活性；放射性。3. 機能，功能。4. 〈美國〉機構。5. 〈pl. 〉 活動范圍。
  1. Strain bl21, and gene expression was induced by iptg. the target proteins were directed into the periplasmic space by the staphylococcal protein a signal sequence preceding the rgd - hirudin gene. using ion exchange chromatography and gel filtration chromatography, the chimera proteins were purified, and both of them showed a single band in tricine - sds - page. the results of activity analysis suggested that these two chimera proteins not only have antithrombin activities, but gain platelet aggregation inhibitory activities as well

    通過離子交換層析和凝膠過濾層分別對兩種嵌合體蛋白進行純化，純化產物在tricine - sds - page中都顯示為單一條帶。活性分析結果表明兩種嵌合體蛋白在保留水蛭素抗凝血酶活力的同時，還呈現抗血小板聚集活性。
  2. The biological functions testified include : enhance iron ion assimilation of epithelial cell of intestine and equilibrate body iron concentration ; broad spectrum of antiviral activity, antibacterial activity and antifungal activity ; modulate marrow cell production and growth ; help to mature and regulate a number of immune cells throughout the body, thus boost body immune ability ; prevents " free iron " from forming free - radicals ; supress tumour growth and prevent tumour formation in animal models

    乳鐵蛋白是一種糖蛋白，為轉鐵蛋白家族的一員，在人和哺乳動物的許多器官與組織中廣泛分佈。乳鐵蛋白具有多種生物學功能，這些功能包括：促進人體腸道對鐵的吸收及調節體內鐵的平衡；廣譜抗菌（細菌和真菌） 、抗病毒感染作用等。
  3. Three management pattern should be established : ensure the share of information resources and the unblocked of order by network ; the transmit ion of order fast by reducing the link ; give play to conscious activity of different levels commander by dividing of power. this is decided by the future war ' s character

    要建立三種管理體制，以網路化確保信息資源的共享和指令的暢通：以扁平化減少中間環節，確保指令傳遞迅速：以分權化充分發揮各級指揮員的主觀能動性；這是未來戰爭特點所決定的。
  4. The hwtx - i gene was chemically synthesized according to its known cdna sequence, the gene was inserted into vector ppic9k which contained aoxj promotor and the sequence of a secreting signal peptide - a - factor, the cloning ppic9k / hwtx - i was constructed and confirmed by two - step pcr and dna sequence analysis, then it was transformed into host strain gs115, a his + muts cell line was screened and multicopy transformants were screened by various g418 concentrations, the multicopy transformant was named gh1. gh1 was cultivated in flasks. after 6 days of induction by 0. 5 % methanol, the supernatant was checked by 16. 5 % tricine - sds page, which showed there was a band in the position of 3. 5 - 6. 1kd, then it was isolated and desalted by ultrofiltration followed by ion exchange of cm column, after reverse phase hplc of ci8 and vacuum drying, the purified rhwtx - 1 was obtained which was proved to be correct recombinant hwtx - i by tricine sds - page, maldi - tof mass spectrometry, amino acid composition analysis, the n - terminal amino acid sequence and its biological activity, the final field of the purified rhwtx - i was about 80mg / l, accounting for 23. 6 % of it total secretory proteins

    將帶有hwtx -基因的ppic9k經blgii線性化后，轉化酵母宿主菌gs115原生質體后經篩選陽性克隆並經表型鑒定為his ~ + mut ~ s酵母菌，進一步用遺傳毒素g418篩選多拷貝的轉化菌株，命名為gh1 ；將gh1甲醇酵母菌用0 . 5的甲醇誘導表達，發酵上清經90飽和度的（ nh _ 4 ） _ 2so _ 4沉澱， yw - 3 （ mwc03000 ）的超濾膜超濾，再經cm陽離子交換， c _ （ 18 ）反相hplc純化得到分子量為4kd左右的組分，其中4289 . 05的組分經質譜鑒定，氨基酸組成分析和序列測定為正確的表達產物，生物學活性表明其活性為天然毒素活性70 % ，表達量為80mg / l 。
  5. Under these conditions the fibrinolytic activity of the supernatant can reach 820 urokinase units per milliliter broth. ba - dfe was purified from the supernatant of b. amyloiquefaciens dc - 4 culture broth by ammonium sulfate precipitation, ion - exchange chromatography on cm - and deae - sepharose fast flow, hydrophobic interaction chromatography on phenyl sepharose 6 fast flow and gel filtration on sephadex g - 50. the purified enzyme displayed thermophilic, hydrophilic and strong fibrinolytic activity

    通過硫酸銨分級沉澱、 cm - sepharosefastflow和deae - sepharosefastflow離子交換層析、 phenylsepharose6fastflow疏水層析和sephadexg - 50凝膠過濾等方法，從解澱粉芽孢桿菌dc - 4的發酵液中分離純化出電泳純的ba - dfe 。
  6. The enzyme activity in fermentation liquid could be inhibited by pmsf and dfp. the fermentation liquor also showed good dehairing activity. the alkaline protease ( named dhap, dehairing alkaline protease ) in the fermentation liquid was purified with hydrophobic interaction chromatography, ion exchange and gel filtration

    通過cm - sepharosefastflow離子交換層析， deae - sepharosefastflow離子交換層析， sephacryls - 100 ， sephacryls - 200凝膠過濾層析，疏水層析等純化步驟對短小芽孢桿菌發酵液中的堿性蛋白酶進行了純化。
  7. In conclusion, the compact engineered peptide can form lethal ion channel in the membrane of staphylococcus aureus guided by staphylococcal agrd pheromone, therefore the engineered peptide had bactericidal activity against staphylococcus aureus, especially against the drug - resistant strains. because of the properties mentioned above, the engineered peptide showed great potential in the future. the engineered peptide was an example of bactericidal protein machine combining two minidomains with different bioactivities and different protein origins

    該工程多膚能在人工脂質膜上形成電壓依賴性離子通道，即當電壓由omv變為+ somv時通道立刻開放，電導驟然上升到某一數值，其後電導發生丫系列諧振式變化;而當電壓由+ somv變為一50mv時電導並不立即減小至o ，而出現正電壓狀態下類似的表現。
  8. Macrophages or osteoclasts can heighten the consistence of hydrogen ions in part circumstance contacted with material or interior cells by chemical reaction, which can accelerate the degradation of the material. secondly, calcium ion and hydrogen ion were the prerequisite raw material of bone formation. and bounds of calcium ions and hydrogen ions produced by the degradation of material provide the activity of osteoblastics affluent material basis, which accelerated the formation of new bone

    實驗結果證明植入材料是以磷酸三鈣（ - tcp ）為主晶相，同時含有焦磷酸鈣、羥基磷灰石、無定形磷酸鈣晶相和非晶相，其化學組成與骨骼的無機礦物相組成相近，而且具有與骨骼相似的多孔網狀結構。
  9. The newly identified gene, nyd - sp27 has structural similarity to an isoform of phospholipase c. nyd - sp27 was expressed endogenously in human pancreatic - duct cells and upregulated in cystic fibrosis. researchers has proved that suppression of the gene resulted in augmentation of phospholipase - c - coupled calcium - ion release and protein kinase c activity, improvement in the amount of mutated cftr reaching the plasma membrane, and thus restoration of pancreatic anion secretion

    Nyd - sp27內源性表達在人體的胰腺導管上皮細胞，並在囊性纖維化時表達增高，顯示該基因可能與病變有關。研究人員發現通過抑制該基因在人體囊性纖維化胰腺導管細胞中的表達，可以糾正缺陷的胰腺陰離子分泌。
  10. The brine shrimp he was prepared and purified by 67 % ammonium sulfate precipitation, deae - sepharose fast flow ion - exchange chromatography, and sephacryl column gel - filtration, and its biochemical and enzymological properties were identified in this study. it was found that the deduced molecular weight of he in sds - page is about 98. 5 kda, and its proteolytic activity was optimized at ph of 7. 5 - 8. 5 and at temperature of 40, respectively

    我們利用67硫酸銨沉澱、 deae - sepharosefastflow陰離子交換柱層析和sephacryl凝膠過濾柱層析，並以酪蛋白為其蛋白酶水解活性的檢測底物、以卵膜為其卵殼裂解活性的特異性底物，從鹵蟲胚胎孵化液中分離純化出了鹵蟲的孵化酶分子，其在sds - page電泳中的分子量約為98 . 5kda 。
  11. 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。
  12. In the present study we firstly investigate the effect of meja on plasma membrane h + - atpase hydrolysis activity and the phosphorylation and dephosphorylation of the enzyme after meja treatment comparing to fusicosin ( fc ) function. moreover, the role of the calcium ion in meja - and fc - induced increases of the plasma membrane h - atpase was studied

    本文首次研究了meja對質膜h ~ + - atpase水解活力的影響， ca ~ （ 2 + ）對meja刺激作用的影響，並對這一過程中發生的可逆磷酸化作用進行了研究，通過與fc作用對比的方法初步探討了meja作用的可能方式。
  13. In this research, nanosize tio2 were prepared by wet chemistry method. the effects of technical condition, ion doping and noble metal modification on crystal structure of ti02, crystal size and its distribution, spectrum and photocatalytic activity were studied in order to prepare nanosize tio2 of high photocatalytic activity. effect factors such as temperature in photocatalytic process were also studied

    本工作選用濕化學方法制備納米tio _ 2光催化劑，研究制備工藝條件、離子摻雜和貴金屬沉積等對納米tio _ 2晶體類型、粒徑大小及分佈，光譜性質和光催活性的影響規律，以期研製出具有高光催化活性的納米tio _ 2光催化劑；同時研究光催化過程中光催化環境溫度等因素對光催化活性的影響規律。
  14. Mg 2 + ion was necessary for pm ht - atpase full hydrolysis activity and k + stimulated enzyme activity slightly

    水解活力還與反應體系酸堿度有關， ph7 . 0時，水解活力最高。
  15. Thirdly, this paper compared the different responses of plants to these two stresses, the change of the defensive enzyme activity and the rate of losing water of leaves was different at two different stresses. the rate of losing water of leaves at drought stress was more rapid than that at salt stress, the leaves would wither and the change of activity of enzymes notably at drought stress, these results showed that the damage to plants was result from the oxidation at drought stress. at salt stress, the content of relative water of leaves changed slightly as well as did the activity of enzymes, these results showed that the damage to plants was caused by poison of ion and lack of nutrition

    三、通過研究兩種冰草植物對兩種脅迫的反應指出乾旱脅迫和鹽脅迫通過不同的途徑對植物進行傷害，主要表現在葉片的失水速率和保護酶活性的變化，乾旱脅迫短時間內葉片失水速率很快，葉片萎蔫，引起保護酶活性顯著變化，表明乾旱脅迫主要是通過氧化脅迫對植株造成傷害，而鹽脅迫下葉片相對含水量幾乎保持不變，表明鹽脅迫對植物的傷害主要通過離子毒害和營養虧缺造成。
  16. After dissolving inclusion bodies, renaturing inclusion bodies and further purification by immobilized metal ion affinity chromatography ( imac ), the fusion protein trx - scfv of electrophoretic purity was obtained, they still possessed antigen - binding activity

    經變性復性，用固相金屬離子親和色譜法一步分離純化了具有功能的單鏈抗體，在一升的發酵液中得到78mg的重組蛋白。
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