acid concentration 中文意思是什麼

acid concentration 解釋
酸濃度
  • acid : adj. 1. 酸味的。2. 【化學】酸的，酸性的。3. 〈比喻〉尖酸刻薄的，易怒的。n. 1. 酸味物。2. 【化學】酸。adv. -ly ,-ness n.
  • 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. The concentration of acid in vomitus or aspirate need not reach this limit.

    嘔吐物或吸引液內酸的濃度不需要達到這一程度。
  2. In trpsin tolerance assay. this virus could resist to 1 % trpsis at 37 in an hour. in acid tolerance assay, this virus was resistant to ph3. 0 and ph5. 0 at 37 in 2 hours, and the average infection litre of the virus decreased little. in heat assay, at 50, the virus was processed from 5 minutes to 150 minutes and at each condition the viral virulence reduced to some certain degree. among these conditions, when at 50 in 30 minutes. the average infection litre of this virus decreased over 2 tilre. and when al 50 in an hour, cpe of ihis virus disappeared. when time was set for an hour. but with processed in different temperature as 50 60 70, 80, the virus losl the multiplication capacity complelely. in biological assay, we selected different cell lines to cultivate this virus by laking advantage of possesional cells at that time in our laboratory. then we found that fcwf cell line was the most sensitive to dxmv and mdck was the second. with f81 cell line, after passaged for 12 times continuously with low concentration of fcs. the virus could produce cpe. however, with vero cell line. the virus could not procuce any cpe after many passages. the hemagglutination and lumadsorption reaction test proved that this virus had no any reaction to erythrocyte of pig, fowl and cavy. by neutrolizaion assay, dxmv could be identified as a kind of ccv

    理化學研究表明，該病毒為rna病毒，對氯仿、乙醚敏感；胰酶試驗中，經37 、 1小時處理的病毒，仍然能夠在貓源細胞fcwf細胞上生長，並且毒力基本保持不變；耐酸性試驗中，病毒分別在ph5 . 0和ph3 . 0經37作用2小時，毒力僅下降一個滴度；耐熱性試驗中，該病毒在恆定溫度50 ，設定不同時間，從5分鐘到150分鐘，毒力均有不同程度下降，其中， 50作用30分鐘，病毒平均滴度下降2個單位； 50 ， 60分鐘， cpe消失；恆定時間1小時，設定不同溫度（ 50 - 60 - 70 - 80 ） ，病毒在細胞上完全喪失增殖能力， cpe消失。生物學試驗，利用實驗室現有條件，選擇不同的細胞系對該病毒進行培養，發現該病毒對貓源細胞fcwf最敏感； mdck細胞次之； f81細胞經多次傳代，亦可出現cpe ；而vero細胞則不敏感。血凝試驗表明，該病毒對豬、雞、人及豚鼠的紅細胞均無血凝性。
  3. Abstract : the anti - inflammatory effect of n - butanol extract of xanthocerassorbifolia bunge ( bex ) was studied in this paper. the ear edema resulted from dimethyl benzene, paw edema induced by carrageenin, the increase of vascular permeability caused by acetic acid, the chemotaxis of wbc induced by cmc and the weight of cotton granuloma in mice and hind paw edema induced by fresh egg white in rats were inhibited significantly by ig bex daily for 7 days, respectively. the carrageenin - induced paw edema was also inhibited markedly in adrenal - ectomiced mice. no changes in weight of adrenal and the concentration of vitamin c were observed, indicating that the anti - inflammatory effect of bex was not related to pituitary - adrenal system

    文摘:文冠木正丁醇提取物對二甲苯致小鼠耳腫脹、蛋清致大鼠足腫脹、角叉菜膠致小鼠足腫脹、醋酸致小鼠腹腔毛細血管通透性增加、小鼠羧甲基纖維素囊中白細胞遊走、小鼠棉球肉芽腫生長均有顯著的抑制作用，同樣劑量下，文冠木正丁醇提取物對角叉菜膠致去雙側腎上腺小鼠足腫脹仍有顯著的抑制作用，且對小鼠腎上腺重量及腎上腺中維生素c的含量沒有明顯影響。
  4. This compartment contains citric acid at a concentration up to 24 times higher than the cytoplasm.

    這種間隔中所含檸檬酸濃度比細胞質高24倍。
  5. In this paper, the aqueous sol of sno2 ultrafme particles were prepared by the colloid chemistry method. here we found that the partical properties of sno2 was concerned with experimental parameters such as type of peptization acid, sn4 + concentration, peptization time, peptization temperature, ageing time et al

    本文採用膠體化學法制備了sno _ 2納米粒子水溶膠，細致研究了膠溶酸類型、 sn ~ （ 4 + ）濃度、膠溶溫度、膠溶時間、陳化時間等對納米粒子性質的影響，並利用浸漬提拉法制備了sno _ 2超微粒子薄膜。
  6. The relationship between capacitance and corrosion conditions in the enlargement of tunnels justifies the latter competition mechanism the varied etching conditions were implemented by enhancing the passivating characteristics and viscosity, changing the a13 + concentration, temperature of etchants and current pulsation. passivating acid in the etchant is conducive to the instant passivation of exposed areas on the foil surface, and hence sustains the balance of competition between aggressive anions and passivators, providing pit nucleatiori sites continuously

    通過侵蝕液中添加草酸、硫酸、乙二醇，改變侵蝕液al ~ （ 3 + ）濃度和電流紋波等方法，研究了不同的侵蝕條件對隧道孔形貌和比容的影響，結果表明：草酸和硫酸既保護了鋁箔表面又促進了隧道孔孔壁的迅速鈍化，增加發孔密度。
  7. 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
  8. Abstract : methanesulfonic acid method was used to prepare five acylated chitins. except heptanoyl chitin, four of them, i. e. acetyl chitin, propionyl chitin, butyryl chitin and hexanoyl chitin, had high degree of substitution ( from 1. 5 to 2. 0 ) and exhibited lyotropic liquid crystalline behavior and cholesteric phase. as the length of the side chain increased the critical concentration ( w / w ) somewhat increased from 0. 21 to 0. 26 because the chain rigidity dropped. the critical concentration values of all the four derivatives were much higher than that of chitin ( 0. 12 ) due to the decrease of intramolecular hydrogen bonds. the four acylated chitin can form typical banded texture after being sheared. there minimum concentrations to form banded texture of them were evidently different, varied from 0. 25 ( for acetyl chitin ) to 0. 37 ( for hexanoyl chitin ). these results further indicated that liquid crystallinity decreased while the length of flexible side substituents increased

    文摘:四種羧酰化甲殼素即乙酰化、丙酰化、丁酰化和己酰化甲殼素在二氯乙酸溶液中均呈現膽甾型溶致液晶相.臨界濃度隨側基長度增加而略有增加，衍生物的臨界濃度明顯都比原甲殼素高許多，這些規律都可以用鏈剛性的變化來解釋.四種羧酰化甲殼素在剪切時均能形成條帶織構，而且能形成條帶織構的最低濃度有明顯差別，隨側基長度增加而提高，進一步表明側基較長，液晶性減少
  9. This paper discusses the acid rinsing process in flax tow pre - treatment technology, and compares the influence degree among the three factors which are acid concentration, processing temperature and time in acid rinsing process by means of the unifactor experiment and orthogonal experiment, finally decides the optimized process

    摘要對亞麻短纖前處理工藝中的預酸處理工序進行了研究，採用單因子實驗及正交實驗，比較酸濃度、處理溫度、處理時間對預酸處理效果的影響程度，並得出最佳處理工藝。
  10. This paper mainly aims at the strategic demands for large - aperture lightweight mirror proposed by high - tech development. its main research contents are : select material blank for lightweight mirror according to physical and chemical properties of optical glass ; analyze and calculate the deformation quantity of the mirror with finite element method ; design and optimize mirror body structure of 400 lightweight plane mirror and 450 lightweight spherical mirror, analyze glass cutting principle, design specisl - use grinding wheel structure, select reasonable technological parameters to implement the processing of weight reduction holes on 400 plane mirror ; analyze etching mechanism of hydrofluoric acid, look for the technological parameters such as the optimal acid concentration and etching time etc. ; eliminate the stress of weight reduction holes and micro - cracks on 400 lightweight plane mirror ; discuss the processing principle and

    本論文的研究主要是瞄準國家高技術對大口徑輕型鏡的戰略需求而開展的。主要研究內容是：根據光學玻璃的物理與化學性能，選擇輕型鏡坯材料；用有限元法對鏡子的變形進行分析、計算，找出變形規律，優化設計400mm輕型平面鏡、 450mm輕型球面鏡鏡體結構；分析玻璃切削原理，設計專用磨輪結構，選擇合理工藝技術參數，完成400mm平面鏡輕量化減重孔的加工；分析氫氟酸腐蝕光學玻璃機理，尋找最佳酸濃度、腐蝕作用時間等工藝參數，實現400mm平面鏡減重孔應力與微裂紋的消除；討論分離器加工原理和工藝技術特點，完成400mm平面輕型鏡面形加工。
  11. 3. the author designs ortho - experimentations of palygorskite acidification and organising modification by adopting propyl alcohol as thinner of wd - 51, and acquires the best craft parameters and craft conditions for gaojiawang palygorskite acidification and acidified palygorskite organising modification, namely : the best craft parameters and craft conditions for gaojiawang palygorskite acidification is : parlygorskite : h2o = 1 : 3, activation time 50 min, activation temperature 96, hydrochloric acid concentration 1. 0 n, parlygorskite granularity - 100mesh ; the best craft parameters and craft conditions for gaojiawang acidified palygorskite organising modification is : wd - 51 concentration 2. 0 % ( wt % ), modification temperature 120, and modification time 60 mins, adopting iso - propyl alcohol as thinner of wd - 51. 4

    設計坡縷石粘土酸化正交實驗和有機化改性正交實驗，取得了高家窪坡縷石粘土酸活化處理和酸化坡縷石用wd - 51進行有機化改性處理的最佳工藝參數和工藝條件，即：高家窪坡縷石酸活化處理的最佳工藝參數和工藝條件為：固液比為1 ： 3 （固體為高家窪坡縷石粘土，液體為去離子水） 、活化時間50min 、活化溫度為96 、鹽酸濃度為1 . 0n 、粒度為- 100目。
  12. The optimal temperature, the optimal ph value and the optimal substrate ( l - aspartic acid ) concentration for the enzymatic reaction by adl were 40, 5. 0 and 66. 5 ~ 133g / l, respectively

    對固定化細胞性質進行的初步研究發現，其最適溫度為40 ，最適ph為5 . 0 ，最適底物濃度范圍為66 . 5 133g l 。
  13. It ' s indicated that the zeta potential and total interaction energy of the colloidal particles are both at a maximum when the nitric acid concentration is 0. 22mol / l for the alumina sols with a mol ratio of 1 : 50 between asb and h2o,

    結果表明，膠體顆粒的雙電層厚度隨硝酸的濃度的增加不斷減小，對異丁醇鋁與水的摩爾比為1 ： 50系溶膠，硝酸濃度為0 . 22mol l時膠體顆粒的zeta電位和作用位能最大。
  14. Food products. vinegar. determination of acetic acid concentration

    食品.醋.醋酸濃度的測定
  15. Monitor and control of sulphuric acid concentration and liquid level in sulphuric acid production

    硫酸生產中硫酸濃度和液位的檢測與控制
  16. Determination clavulanic acid concentration in fermentation liquor with spectrophotometry

    紫外分光光度法測定發酵液中克拉維酸含量的研究
  17. Hydrochloric acid for industrial use - part 2 : evaluation of hydrochloric acid concentration by measurement of density

    工業用鹽酸.第2部分:通過密度測量評估鹽酸的濃度
  18. The optimum conditions ( enzyme source, enzyme concentration, acid, acid concentration, reaction medium and reaction temperature, et al ) were screened out

    對脂肪酶酶源、脂肪酶濃度、羧酸、羧酸濃度、溫度、溶劑等反應條件進行篩選。
  19. Under the optimum conditions, the response to the uric acid concentration was linear over range 1. 0 to 100 mg. l - 1 with a regression equation of i = 3. 09c ( mg. l - 1 ) + 2. 1 ( r2 = 0. 9992, n = 6 ) and a detection limit of 0. 1 mg. l - 1 ( 3 )

    據此，將該發光體系應用於化學發光成像分析測定甲基多巴的研究中。在一定的實驗條件下，發光強度與甲基多巴濃度成良好的線性關系。
  20. Abstract : the instruments for measuring sulphuric acid concentration and liquid level in drying and absorption section of sulphuric acid plant, as well as comprehensive control of sulphuric acid concentration and liquid level in different acid - mixing processes are described

    文摘:介紹了硫酸生產中干吸工序硫酸濃度、液位的檢測與控制儀表及其工作原理，以及不同串酸工藝的硫酸濃度和液位的綜合控制。
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