optimum concentration 中文意思是什麼

optimum concentration 解釋
最佳濃度
  • optimum : n. （pl. optimums, -ma ） 【主、生】（成長繁殖等的）最適條件，最適度。adj. 最適宜的。 the optimum temperature 最適溫度。
  • concentration : n. 1. 集中。2. 【化學】提濃，蒸濃，濃縮；濃度；稠密度；【礦物】汰選，選礦，富化。3. 集中注意，專心。
  1. 2. according to the effect of combination of different hormone concentration in the medium on callus formation and shoot induction of tomato cotvledons, we defined mso + 2. 0mg / l ba + - 0. 2mg / l iaa as optimum differential medium

    根據番茄子葉外植體在加有不同激素濃度配比的培養基上愈傷組織分化和芽再生的情況，確定最佳分化培養基為ms _ 0 + 2 . 0mg / lba + 0 . 2mg / liaa ； 3
  2. The factors influencing on the performance of ash - jd such as the moore ratio of monomers, the reaction temperature and time, concentration, the ph value of reaction solution and the drippy speed of formaldehyde were studied carefully. through experiments, the optimum level of those factors was gained

    論文詳細研究了反應單體的摩爾比、反應溫度、時間、濃度、反應溶液的酸堿度及甲醛的滴加速度等對產品ash - jd性能的影響，通過試驗，得到了這些因素的最佳水平。
  3. Experiment shows that the antigen extracted by autoclave is best for dot - ppa - elisa. applying the x2 test, optimal concentration of antigen was determined, and the optimum dilution of enzyme hrp - spa was 1 : 10. the high specificity of dot - ppa - elisa was proved by the specific blocking test, and also by the cross - reaction test in which the diaphragm does not react with the antibodies against salmonellosis, pasteurellosis, chlamydiosis, hcv, ppv, brucellosis, erysipelas suis, colibacillosis, prv

    試驗中對多種方法提取的診斷抗原進行了比較、篩選；確定了dot - ppa - elisa的最佳工作條件；測定了st - 171株的免疫豬血清抗體及c群、 2型人工感染豬血清抗體效價，並初步確定了該方法的陽性標準。
  4. This approach provides good economics and the ability to formulate the optimum filler concentration for a specific application.

    這種方法既經濟又能滿足特殊應用所需要的最適宜的填料含量。
  5. Some main results of testing research were as fellows : i. in the course of testing of leaching zinc dross, leaching zinc dross by sulfuric acid was researched and the effects on the leaching rate of the zinc dross were analyzed by author, the optimum conditions of leaching testing of zinc dross were determined as fellows : liquid - solid ratio 6 : 1, stirring ratio 250r / min, granularity 120 mesh, the soaking time 5h, the concentration of sulfuric acid of 30 %, and under these conditions, the rate of leaching zinc is above 92. 0 %. ii. in the course of testing of purification, on the basis of comprehending and comparing all present methods of the manganese - removal and iron - removal, the oxidizing method of manganese - removal in zinc sulfate solution using ammonium persulfate was put forward and the oxidizing method of iron - removal in zinc sulfate solution using the goethite process and oxidation - hydrolysis process was adopted

    研究的主要結果具體如下： 1 、研究了硫酸浸出鋅浮渣並分析了影響浸出率的各種因素，確定了浸出鋅浮渣的最佳條件為：液固比為6 ： 1 ，攪拌速度為250r min ，粒度為- 120目，酸浸時間為5 . 0h ，硫酸濃度30 ，鋅浮渣的浸出率大於92 . 0 ； 2 、在綜合和比較了目前除錳和除鐵的各種方法基礎上，提出了過硫酸銨氧化除錳方法和選擇了針鐵礦-氧化水解聯合法除鐵方法，並分析和討論了影響除錳率和除鐵率等各種因素，確定了除錳的條件為：溫度90 ， ph值5 . 4 ，反應時間3h ，過硫酸銨達到理論值的1 . 2倍，除錳率超過99 . 86 ；聯合法除鐵的條件為：氧化反應時間1 . 5小時、溫度控制在90 92 、 ph值5 . 2 5
  6. Zno nano - particles was made from precursor zn ( ac ) 2. 2h2o through the method of sol - gel. the parameters for achieving the optimum technological conditions in making zno nano - particles were obtained by carefully observing the precursor concentration, amount of solvent and precipitants, the temperature on each stages and the behavior of reactors

    在制備過程中，研究了主鹽濃度、溶劑用量、沉澱劑用量、反應各階段的工藝溫度，以及反應器等因素對實驗結果的影響，得出了制備zno納米微粒的最佳工藝參數。
  7. In order to approach the optimum design of changeover portion structural shapes for submarine ' s different diametral pressure cabins, a new structural type, named the double arc transition form, is introduced based on the analysis of stress concentration, by using the engineering calculation method and finite element mthod

    摘要為了探討潛艇不同直徑的耐壓艙室過渡段結構型式的最優設計，利用工程計算方法和有限元方法，分析過渡段結構的應力集中，提出了能夠使不同直徑圓柱殼光滑過渡的結構形式雙圓弧式過渡形式。
  8. Abstract : the thermogram of s. dysenteriae of fungistatic action w as determined and the growth rate constant at different concentration of medicin e was calculated, and the optimum allowable concentration of the co salt complex abtained

    文摘:微量量熱法測定並研究計算了在不同濃度的鈷配合物作用下痢疾桿菌的生長速率常數和最佳用藥量。
  9. Medium experiments were arranged under uniform design, and then an optimum medium was got accordingly. the culture liquid was centrifugalized at 3, 500r / min for 30min, then ammonium sulfate was added into the supernatant to a final concentration of 30 % to precipitate the others

    通過硫酸銨分級沉澱、 deaesephadexa - 50陰離子交換凝膠層析和sephadexg - 75凝膠柱層析對發酵液進行分離和純化，並得到電泳純的酶。
  10. D. salina can grow in extreme environment such as in a variety of salt concentrations ranging from 0. 05m to 5m, and the optimum salt concentration for growth is 2m to 3m

    該藻的突出優點在於抗逆性極佳，可在0 . 05m - 5m的鹽水中生長，最佳生長繁殖鹽度為2 - 3m ，是目前已知最耐鹽的真核生物。
  11. Effects of diverse environmental factors on the growth rate ( od4oo ) and nitrogenase activity ( ara ) of the strain w12 hi nitrogen - free culture were investigated in our experiments. the results implied that the strain w12 could easily adapt to different cultural conditions : it could use various carbon sources ( especially glucose, sucrose, malic acid, mannitol ), propagate quickly and fix nitrogen at a temperature range of 15 ? to 40 ? and at 25 - 35 ? for optimum, at a ph range of 4 to 8. 5, at a saline concentration range of 0. 01 % to 1. 5 % ; low nlv " concentration had little effect on its nitrogenase activity. ara could also be detected when it grow in the culture media with 5mmol / l ntv "

    W12菌株對環境因子的適應性研究：無氮培養條件下，測定溫度、碳源、酸堿度、滲透壓對w12生長及固氮能力的影響，結果表明，在15 - 40下均能生長並表達固氮酶活性，其最適生長及固氮的溫度為25 - 35 ；能利用葡萄糖、蔗糖、蘋果酸、甘露醇等多種碳源生長並固氮，當培養基中同時存在蔗糖和蘋果酸時，細菌生長和固氮活性最強；在偏酸和偏堿的條件下（ ph4 . 5 - 8 . 5 ）均能保持較強的生長勢和較高的固氮酶活性，並能通過調節自身代謝平衡並適應環境的酸、堿性變化，使培養液趨于中性：能耐受較高的滲透壓，培養液中卜、 5 naci濃度對其生長和固氮酶活性影響不大，當naci濃度升至2時，菌株的生長勢及固氮酶活性才有所下降：低濃度的鉸對其固氮酶活性影響不大，在0
  12. The xylanase activity of the mutant kept stable after 10 generations. after orthogonal designing experiment, the optimum fermentation conditions of a. niger j 506 were obtained, which is as followed : concentration of the major carbon resource 4 %, ratio between bran and corncob 5 : 5, concentration of glucose 0. 1 %, concentration of ammonium oxalate as supplemental nitrogen resource 2. 0 %, the initial ph of liquid medium 5. 0, 100ml / 250ml flask

    經過正交試驗設計，得出突變株a . nigerj506產木聚糖酶最佳的工藝條件為：主碳源濃度4 、麩皮與玉米芯的比例為5 ： 5 、輔加碳源葡萄糖的濃度是0 . 1 、輔加氮源草酸銨的濃度是2 . 0 ，培養基初始ph為5 . 0 ， 250ml三角瓶的裝液量為100ml 。
  13. By the investigation for preparation technique of the phosphor, the optimum activator concentration, host composition and firing time were established

    通過對熒光粉制備工藝的研究，確定了熒光粉制備中最佳的激活劑濃度、基質的組成及樣品的灼燒時間等工藝參數。
  14. Abstract : determined the power - time curves of the promoter bacteria of ganoderma lucidum for e. coli, using 2277 thermal activity moniter, a new experimental model of promoter bacteria growth were established. the growth rate constant and heat output at different concentration of ganoderma lucidum have been calculated. from - c and q - c curves the optimum concentration has also been established

    文摘:用熱活性檢測儀測定了天然藥物靈芝對大腸桿菌起促菌作用的熱功率-時間曲線，並根據曲線建立了細菌生長的新的實驗模型，按新模型計算了促菌作用下的生長速率常數，發熱量及最佳促菌濃度。
  15. Its " optimum concentration of trypan blue was from 0. 005 % to 0. 01 % ( w / v ), the optimum volume was around 15ml / per petri dish ( 080mm ). lbsp medium was easy to use and can be sterilized by 121 擄 c for 30 minutes

    比較研究結果表明鑒定培養基的適宜條件是：錐蟲藍的使用濃度是0 . 005 - 0 . 01 （ w v ） ，培養基的用量為15ml皿左右，並可以採用0 . 1mpa高壓蒸汽滅菌。
  16. The optimum concentration of kanamycin was different at different stage of culture, which was 50mg / l at calli induction stage, 100mg / l at embryogenic calli selecting stage, and 50mg / l at plantlet root elongating stage, respectively

    把愈傷組織誘導階段的kan濃度定為somg / l ;愈傷組織繼代的kan濃度定為100m叭;小植株長根的培養基的kan濃度定為som叭。
  17. The optimum concentration and temperature of dtpmp solution and optimum annealing temperature are discussed. in addition, hydration resistant effect of anodic oxide films treated with adp, atmp and dtpmp respectively is discussed through ft - ir, xps, afm and i - v characteristics testing

    探討了dtpmp溶液濃度、浸漬溫度和熱處理溫度對氧化膜升壓時間、比容、耐電壓的影響，並找到其最佳耐水合處理工藝;同時採用ft - ir 、 xps 、 afm和i - v特性測試對adp 、 atmp 、 dtpmp三種試劑對氧化膜的耐水合處理效果進行了對比研究。
  18. The optimum concentration of superoxide anions, which resulted in the maximal proliferative effect of mice bone marrow cells, was 1. 8 - 1. 9nmol / h / 106cells. superoxide anions also can cause lymphocytes proliferation and it increases with the increasement of monocytes. conclusion : superoxide anions play an important role in the proliferative effect caused by low level radiation and in the proliferation of peripheral blood lymphocytes cultured with monocytes

    結論： o _ 2 ~ -在低水平輻射所致小鼠骨髓細胞增殖刺激效應中起關鍵作用； o _ 2 ~ -濃度的升高是淋巴細胞和單核細胞共培養體系中促進淋巴細胞增殖的重要因素。
  19. Variety siyueman needed high concentration of ga to promote its flowering, because low concentration of ga had no any effect on its flowering. the optimum concentration of ga was 500 mg / l, in addition siyueman needed more times of spry with ga

    但四月蔓品種對ga的濃度要求較高，低濃度時不起作用，其處理的合適濃度為500mg l ，而且要求處理的次數也比較多，說明強冬性品種ga需求量高。
  20. 5 - azacytidine in low concentration promoted flowering of variety youdonger but inhibited flowering of it in high concentration. the optimum concentration were 250ujnol / l

    低濃度5 - azac促進油冬兒白菜開花，但高濃度時抑制開花，以250 mol l促進開花的效果最理想。
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