low concentration 中文意思是什麼

low concentration 解釋
低集中度
  • low : adj 1 低的；淺的，矮的。 low flight 低飛。 a low temperature 低溫。 low tide [water] 低潮。 The g...
  • 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. Comprehensive cellular responses was found in human amnion fl cells following exposure to low concentration of mnng, such as the lowering of dna replication fidelity resulted from alteration of dna polymerase profile ; activation of a lot of transcription factors, such as api, creb, nf - kb etc ; clustering of egfr ( epidermal growth factor receptor ) and tnfr ( tumor necrosis factor receptor ) and activation of camp - pka - creb and jnk / sapk signal pathways

    我們發現，低劑量mnng處理后的人羊膜fl細胞有廣泛的細胞反應，並有多個信號轉導通路的激活和基因表達的改變。例如dna復制保真度下降， dna聚合酶譜發生改變，應用報告基因技術和底物磷酸化檢出技術證明細胞一系列轉錄因子如ap1 、 creb 、 nf b等被激活，細胞表面受體如表皮生長因子受體、腫瘤壞死因子受體發生聚簇，細胞信號轉導通路camp - pka - creb和jnk sapk被激活。
  2. The seawater containing high concentration potassium ion or containing low concentration magnesium ion can induce the settlement and metamorphosis of s. canopus larvae

    在人工誘導物中，高濃度的k +和低濃度的mg2 +均能顯著提高冠瘤海鞘幼體的附著率與變態率。
  3. 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。
  4. Low concentration cylokinin can stop the decrease of chlorophyl content within waterlogged plant leaves and it produces a good result, but high concentration has no obvious result

    低濃度的細胞分裂素即可對受濕害植物葉片的葉綠素含量的下降產生明顯的阻止效果，但高濃度時這種效果的加強不明顯。
  5. Study of influence of coal dust on low - concentration gas explosion

    煤塵對低濃度瓦斯爆炸的影響研究
  6. In addition, in postwar ( world war ii ) period, japanese pharmaceutical industry rose abruptly after suffering a great damage, and in a few tens of years, it had become being able to supply more nces than any other counties ( or areas ) in the world. during this course, in japanese pharmaceutical industry, also emerged some conditions similar to ours " status quo which are low concentration ratio, low - grade competitory mode that remains at the level of price competition, and so on

    不僅如此，二戰後日本的醫藥產業在遭到了嚴重破壞的情況下迅速崛起，短短的幾十年時間里迅速成長為世界上最大的nces供應國，在這樣一個發展過程中，日本也有過與我國目前醫藥產業狀況非常相似的情形，如產業集中度低，競爭方式停留在低水平的價格競爭上等。
  7. At low concentration of zn, the changes in ultrastructure were nuclei deformation, chloroplast swelling and disorder of thylakoid arrangement ; serious damages in ultrastructure caused by greater zn stress were indicated by scattered nucleoli, condensed chromatin, almost empty nuclei with nuclear membrane disrupted and nucleoplasm flowing into cytoplasm, swollen and partly dissolved cristae of mitochondria, disrupted and collapsed chloroplast envelopes, and some dissolved thylakoids that flew into cytoplasm

    超微結構的變化也呈現加重趨勢，低濃度處理的變化為細胞核變形、葉綠體膨脹、類囊體排列紊亂；嚴重的超微結構的損傷是核仁散開、染色質凝集，細胞核幾乎成為空核和核膜破裂，核質散出；線粒體脊突膨脹和部分溶解；葉綠體膜斷裂、消失和部分類囊體溶解和散到細胞質中。
  8. It concludes that there are only four industries with high concentration degree in shanghai presently, while others shows no distinct intersectional significance due to its low concentration degree

    目前上海市製造業最為集中的只有四個行業，而其餘行業區域集中度不高，不具有明顯的區際意義。
  9. The predicted value of the model theory coincided basically with the experimental result of the waste gas methyl benzene of low concentration in the trickling biofilter

    模型的理論預測值與生物膜滴濾塔凈化低濃度甲苯廢氣的實驗結果基本吻合。
  10. In order to study the mechanism of the effect of low concentration tfp on the proliferation of s. pombe, we watch yeast cells loaded with fluo - 3 under laser scanning confocal microscope ( lscm ). the fluorescence intensity reflected the cytosolic free calcium concentration. the result showed that, the cytosolic free ca2 + concentration in s. pombe cultured in ca2 + - free medium was 2 ~ 3 times lower than that in s. pombe cultured in medium containing 10umol / l ca24, while ca2 + concentration in s. pombe treated with 50umol / l tfp was 4 - 5 times higher

    本文發現增加胞外鈣濃度以及低濃度（ 20 100 mol l ）三氟拉嗪（ tfp ）不但能促進野生型s . pombe細胞的增殖，而且對mfp7菌株也有同樣的效應，這說明胞外ca ~ （ 2 + ）和低濃度tfp對不同遺傳型裂殖酵母細胞的增殖均有促進作用。
  11. The results show that the indoor air is unpolluted and the main contamination is particulates with diameter of 10 m or less, total volatile organic compounds and ozone ; the pollution mostly comes from personnel, merchandise and outdoor air ; the unacceptability ratio of the indoor air quality is 22. 64 %, so the indoor air is unacceptable ; indoor persons have caught sick building syndrome ( sbs ) ; long time and low concentration pollution is an important characteristic of indoor pollution ; and the satisfied degree of indoor persons on the temperature, relative humidify, illumination and vision is very high

    結果表明，商場室內處于未污染狀況，主要污染物是可吸入顆粒物、總揮發性有機化合物和臭氧；主要污染來源於顧客、商品和室外空氣；商場內人員對室內空氣的不可接受率為22 . 64 % ，室內空氣屬于不可接受；室內人員已有病態建築綜合癥發生；長時間低濃度污染，是室內污染的重要特徵；室內人員對商場的溫度、相對濕度和室內光照度、視覺環境等滿意程度很高。
  12. This paper introduces the latest progress of high level radioactive waste disposal programs in the world, and discusses the key scientific issues as follows ： ( 1 ) the precise prediction of the evolution of a repository site ; ( 2 ) the characteristics of deep geological environment ; ( 3 ) the behaviour of deep rock mass, groundwater and engineering material under coupled conditions ( intermediate to high temperatures, geostress, hydraulic, chemical, biological and radiation process, etc ) ; ( 4 ) the geochemical behaviour of transuranic radionuclides with low concentration and its movement with groundwater : and ( 5 ) the safety assessment of disposal system

    在介紹國內外最新研究進展的基礎上，重點討論高放廢物地質處置的若干關鍵科學問題：處置庫場址地質演化的精確預測、深部地質環境特徵、多場耦合條件下（中（高）溫、地殼應力、水力作用、化學作用、生物作用和輻射作用等）深部巖體、地下水和工程材料的行為、低濃度超鈾放射性核素的地球化學行為與隨地下水遷移行為及處置系統的安全評價。
  13. Treatment for 10 days with low concentration 5 - azacytidine combined with 4 " ccold treatment is more effective than treatment alone, which indicated that the effects of vernalization and 5 - azac is addictive

    當低濃度5 - azac處理和4低溫處理結合進行10天時，促進開花的效果優于單獨處理，說明它們促進開花的作用具有加成性。
  14. Our previous work identified delayed mutation occurred at target supf trna gene in plasmid transfected into cells pretreated with low concentration of alkylating agent n - methyl - n ' - nitro - n - nitrosoguanidine ( mnng )

    在收回的質粒上我們檢測到了延遲發生的、高於對照5倍以上的突變。由於w在細胞中的半壽期僅為1
  15. The growth of k. candel seedling leaves showed no significant difference at low concentration, was inhibited at concentration of 1 mg / l and 10 mg / l

    濃度為l 10mg l ，葉片氣孔導度和蒸騰速率均顯著降低，並且nap處理的下降幅度大於pyr處理。
  16. The carbofuran - degrading experiment of cds - 1 was carried out in lab scale, the results showed that the highest degrading efficiency was obtained with ph, temperature being 7. 0, 30c respectively ; the change of aeration had no influece on degrading rate ; the increasing inocula could accelerate carbofuran degrading progress ; the degrading capability of cds - 1 was n ' t inhibited by high carbofuran concentration ; the addition of low concentration of nutrients had no distinct effect on the degrading rate while high concentration had inhibiting effect the distribution of degrading enzyme was also primarily studied, the results showed that degrading - related enzyme was endocellular and degrading progress was not cometabolism

    Cds - 1的降解酶（系）是誘導酶（系） ，存在明顯的誘導期；胞內、胞外酶實驗表明呋喃丹降解酶（系）存在於細胞內。添加低濃度外源營養物質對cds - 1的降解性能無明顯影響，說明cds - 1降解呋喃丹的過程不屬于共代謝過程，可以在無外源營養物質存在的條件下降解呋喃丹。添加高濃度外源營養物質會對該菌降解性能產生抑制。
  17. The fluorescence of the copolymer ( dmbn - vcz ) spectra show that the fluorescence spectra are in good agreement with that of dmbn monomer when the solution of copolymer ( dmbn - vcz ) is located in low concentration range ( < 10 - 3mg / ml )

    對非共軛聚合物（ dmbn - vcz ）的熒光光譜來說，在濃度很低時，它的激發，發射光譜和單體（ dmbn ）非常類似。
  18. 4. because of input - output is inefficiency, which is limited by the low concentration ratio and expenditure situation, enterprise ' s technological innovation motivation is not enough. this leads to research and development expenditures is poor, the width and deepness of products development is not enough

    受制於市場集中度不高和現有的消費狀況，投入產出效率低，乳品企業技術創新的激勵不足，造成企業研發經費投入和產品開發的深度、廣度不足。
  19. Uses : used in cleaning and pickling if metal surface ； used in accelerating curing of low concentration formalin adhesives ； used in modification of starch, production of bonds and coating materials ； used as desizing agent and bleach activator ； used as an essential component of bleaching formulations for hair cosmetics

    用途：用於金屬表面的清潔和酸洗；用於加快低濃度福爾馬林粘合劑的處理過程；是生產澱粉的調節劑，並應用於粘合劑的塗料生產中；用於脫漿劑和漂白活性劑；是染發劑的基本成分這一，起脫色作用。
  20. The process is suitable for purifying low concentration foul gas and providing a good way to control odour pollution

    該工藝適用於低濃度的含硫惡臭污染治理，為低濃度惡臭污染的治理提供了一種優良的方法。
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