質的抗性 的英文怎麼說

中文拼音 [zhídekàngxìng]
質的抗性 英文
qualitative resistance
  • 質 : Ⅰ名詞1 （性質; 本質） nature; character; essence 2 （質量） quality 3 （物質） matter; substance;...
  • 的 : 4次方是 The fourth power of 2 is direction
  • 抗 : Ⅰ動詞1 （抵抗; 抵擋） resist; combat; fight 2 （拒絕; 抗拒） refuse; defy 3 （對等） contend with...
  • 性 : Ⅰ名詞1 （性格） nature; character; disposition 2 （性能; 性質） property; quality 3 （性別） sex ...
  1. The effects of cold acclimation on the freezing resistance and total soluble protein in populus tomentosa seedlings

    低溫鍛煉對毛白楊幼苗抗凍性和總可溶性蛋白質的影響
  2. The changes of the expression of gfp in biu - 87 cell that induced by the aconitine and hab toxins, gtx were detected with fluorescence microscope, and quantitatively measured with image - pro plus software

    經誘導，抗性細胞發出較強的綠色熒光，表明重組質粒pegfp - c - fos在biu - 87細胞中成功表達。
  3. The total rna was isolated from pokeweed ( phytolacca americana ) leaves using the method of guanidine isothiocyante and used as template to amplify the total length and deleted mutant pokeweed antiviral protein ( pap ) gene by rt - pcr and then the pap gene was cloned into pgem - t vector. the sequencing results showed that pap gene had 99. 9 % identity comparing with the pap gene nucleotide sequence reported by lin et al ( 1991 ). the iptg - inducible expression vector containing the pap gene was constructed and transferred into e. coli bl21 ( de3 ) - plyss

    將缺失型pap基因克隆到植物表達載體pbi121中，通過液氮冷凍法將重組質粒轉入農桿菌lba4404細胞中，然後採用葉盤法，在該農桿菌的介導下將pap基因導入普通煙草中，經過卡那黴素抗性篩選，最後獲得了轉pap基因的工程煙草植株，摩擦接種煙草花葉病毒（ tmv ） ，與非轉基因煙草相比，能夠推遲癥狀表現達2月之久，說明pap基因能夠在其它植物體內產生有活性的高抗病毒的蛋白質。
  4. An antifungal compound produced by corynebacterium spp

    1產生廣譜抗真菌活性物質的初步研究
  5. The resistance evaluation to bacterial wilt of tobacco germ resources and hybridized combinations of flue - cured tobacco

    煙草種質資源及烤煙雜交組合對青枯病的抗性評價
  6. The mechanism of function and application of antifungal drugs and antifungal means in the medical and mycological realms as well as the role of saccharide in the antifungal process are described in this paper

    本文主要就抗真菌藥物、抗真菌方法在醫學和植物真菌學領域的作用機理及應用以及糖類物質的抗真菌活性進行了綜述。
  7. 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 。
  8. High frequency of shoot differentiation was obtained from the protocalli on differentiated medium. the regenerated plants still preserved resistance to methionine and ethionine

    原生質體再生的植株仍然保持對甲硫氨酸的抗性，同時對乙硫氨酸表現交叉抗性。
  9. Screening and evaluation of wheat germplasm for resistance to the aphid sitobion avenae

    小麥種質對麥長管蚜的抗性鑒定與評價
  10. Under that condition the strain can produce the most concentration of the bioactive compounds. the physical and chemical properties of the actibacterial compounds have been studied, the results showed the bioactive substance has heat stable, acidity and weakly alkali stable. it can be dissolved in acid water, chloroform solvent, can not be dissolved in ethyl acetate, petroleum ether, alkali water. the result of thinlayer chromatography showed the bioactive compounds can give off blue and green fluorescence in the uv light. the paper chromatography demonstrate the bioactive substance may be a new construct compounds

    研究表明，該活性物質具有較強的熱穩定性， ph 9的條件下能穩定存在，但ph 12的強堿性條件下活性物質的抗菌活性幾近喪失；活性物質易溶於氯仿、酸性水、不溶於乙酸乙酯、石油醚、堿性水；薄層層析顯示活性物質在紫外光下能發藍綠色熒光等特點；由捷克八溶劑系統紙層析鑒定該抗菌活性物質不屬於四大類抗生素，可能為一新的抗菌活性物質。
  11. The occurance of powdery mildew, rust, maruca testulalis geye of cowpea were studied after cowpea had been handled by different kinds of foliar fertilization, and the indexes such as ppo and yields, were measured. the results showd that, using fertilizers reasonably could raise resistance of plants to pest, increase yields of crops and guarantee quality of products

    摘要研究了經不同葉面肥處理后，豇豆白粉病、銹病、豆野螟的發生情況，測定了多酚氧化酶（ ppo ） 、產量指標，結果表明，合理施肥能夠提高植物對有害生物的抗性，增加產量，保證品質。
  12. Compared to the single hg2 + treated, se4 + + hg2 + the mixed exposure could restrain the fall of the activity of t ? aoc, sod and gsh ? px, reducing the level of lipid peroxidation, and alleviating membrane damage, represented with the heighten na + - k + - atpase activity and reduced mda concentration, resulting in the increased resistance to hg2 + damage. however, se4 + were incapable of preventing from the damage of hg2 + ultimately, along with the exposure period, regardless of the fact that the obvious enhancement of t - aoc and atpase activity

    混合處理后，與單一汞處理相比， se ~ （ 4 + ）在一定程度上能有效抑制汞脅迫引起的t ? aoc ， sod ， gsh ? px的降低，降低膜脂質過氧化水平，減輕了對膜的硒對汞致劍尾魚抗氧化系統的毒害和生理損傷的拮抗作用損傷，表現為隨一k + / atpase活力升高，而mda含量降低，提高了機體對hg葉毒害的抗性;但隨著染毒時間延長，硒不能最終阻止毒害的加深。
  13. It can be concluded from the experiment results that hatchery seed has lower genetic variation and large - scale hatchery seed releasing affects the genetic diversity of the natural population. the shrimp distributed along china coast in bohai sea and yellow sea may consist of more than one populations. the viral disease resistant ability of f. chinensis is proved to be genetically inherited and can be improved by genetic selection

    一通過對實驗結果的進一步分析認為：中國對蝦人工育苗的過程使後代群體的遺傳多樣性下降，人工培育苗種的大規模放流影響了自然群體的遺傳多樣性； ，分佈於我國沿海的中國對蝦可能由多個自然群體構成，還存在未被發現的種質資源：中國對蝦抗wssv病毒感染是由遺傳決定的，選育可提高中國對蝦對wssv的抗性。
  14. With high concentration of sds and elevated temprature （ 43 ） ， we succeeded in eliminating plasmids from ten strains of s. aureus which were isolated from the farms of beijing suburb. according to the sensitivity test before and after plasmid remoral ， we found that 72. 5 antibiotic resistance of s. aureus was mediated by plasmids ， and 27. 5 encoded by chromosome. the curing test indicated that the plasmids play an important role in coding the resistance to antibiotics

    從北京郊區雞場分離到10株耐藥性金黃色葡萄球菌，對這些菌株進行質粒消除，根據質粒消除前後的耐藥性檢測，發現耐各種藥物的抗性基因大多數位於質粒上，少部分抗性基因位於染色體上，由質粒介導的耐藥基因佔72 . 5 % ，由染色體編碼的抗性基因佔27 . 5 % ，說明質粒在決定對抗生素的抵抗性中起主要作用。
  15. The antibiotic resistance of this strain is detected, because it generally relates to the plasmid. the result shows that this strain has not antibiotic resistance to chloramphenicol and tetracycline, but ampicillin

    因為細菌的抗生素抗性往往是與質粒相關的，所以考察了這株菌對抗生素的抗性，結果表明，這株菌對氨芐青霉素有抗性，對氯黴素和四環素沒有抗性。
  16. Compare the screen - and - treat versus universal prophylactic antibiotics regimen for prevention of re - infection in women requesting termination of pregnancy

    在預防這批婦女出現重復感染癥狀方面，比較在檢查后提供個別治療與一律給予預防性質的抗菌素的功效。
  17. Study on the antioxidant performance of apple polyphenols

    蘋果中多酚物質的抗氧化性研究
  18. Totally 99 transgenic rice plants from 125 resistant calli of 191 calli were obtained and pcr assay showed that 80. 3 % of them were positive. the result of southern blotting analysis for primary plants revealed that each transgenic plant contained a average of 2. 5 copy of t - dna

    對抗性植株進行pcr擴增檢測，結果表明有80 . 3的抗性植株為陽性植株； southern雜交結果進一步證明了質粒的t - dna已經整合到水稻的基因組中，拷貝數為1 4個，平均每棵轉化植株有2 . 5個拷貝。
  19. Based on genetic diversity, natural strains of a. implicatum, that contained plant fitness - enhanced characters but toxin - free to livestock, would be able to selected for brachiaria breeding. based on rapd analysis, a common product about 500 - bp to all isolates of a. implicatum that amplified with primer opak10 was cloned and named as p ai ak10 - 500

    Implicatum的自然株系中篩選有利旗草生長、但卻不產生家畜毒性物質的優良菌株提供了可能，為旗草的抗性育種和高產育種提供了新的資源和方法。
  20. The natural immune system can distinguish a lot of foreign substances using a bit of antibodies, and it has the feature of the pattern recognition

    生物的免疫系統具有利用少量的抗體識別大量的病變或外來入侵物質的特性，具有模式識別的性質。
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