strain concentration 中文意思是什麼

strain concentration 解釋
應變集中
  • strain : vt 1 用力拉，拉緊，抽緊，扯緊。2 使緊張；盡量使用（肌肉等）。3 強迫，強制；濫用，盡量利用。4 拉傷...
  • 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. 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
  2. The results of the experimental tests show that nh4cl and k2hpo4, kh2po4 are the most available nutrents to our isolates when they are degrading oils. the most suitable experinment condition is : temperature being 30 c, initial ph being 7 - 8, the shaking rate of the culture flasks is 180 r / min, the concentration of nacl is 1 %. the biodegradation results have shown that our 6 isolates have the effective degradation capability to crude oil ; within 6 days the transforing rate of oil by each single strain is more than 60 %

    本研究分離出的6株菌，初步鑒定結果為： sy1為微桿菌屬、 sy2為諾卡氏菌屬、 sy3和sy5為假單胞菌屬、 sy4和sy6為芽孢桿菌屬；實驗結果表明， 6菌株的最佳氮源為氯化銨（ nh _ 4cl ） ，最佳磷源為磷酸氫二鉀和磷酸二氫鉀的混合物，最適生長條件為：溫度為30 ，初始ph值為7 8 ，搖床轉速為180r min ，鹽（ nacl ）濃度為1 ；通過降解實驗得出6株菌對原油都有較強的降解能力，單一菌株在5天後的原油降解率都高於60 ， 6株菌對原油的生物降解反應符合一級反應動力學特徵。
  3. The 2nd pair of primers was designed according to the sequence of strain th - 98 collected in genbank. concentration of tp was analyzed after amplification invitro by rt - pcr, purified by low melt agarose and labeled by digoxigenin

    根據genbankth - 98株序列設計第2對引物，應用rt - pcr方法體外擴增該片段（命名為tp ） ，瓊脂糖凝膠純化后測定其濃度和純度，進行非放射性地高辛標記。
  4. Many cases of excavation and support of high rock slopes were symtematically analyzed, and some conclusions were drawn. there exists stress concentration in grading angle induced by excavation and obvious change of stress and strain on sloping surface, which reduce as the increase of distance to surface. initial stresses have important influence on excavation and support

    撇面上的應力應變的靴很大，隨著離坡面距離的增加而減小；初始地應力對邊坡的開挖支護產生很大的影響，隨著初始地應力的增加，開挖坡面回彈位移增大。
  5. Methods serums containing whole wmt and its disassembled formulas, including the formula consisted of warming jing and boosting qi part wenjin yiqi, wy and that of promoting blood circulation part huoxue tongmai, ht, as well as the serum contained high concentration of lipids were prepared conventionally, respectively. the adhesion of monocytes cell strain thp1 to human umbilical vascular endothelial cells huvec was determined by rose bengal stain method, and elisa was used to detect expressions of intercellular adhesion molecule icam1, vascular cellular adhesion molecule vcam1 and p selectin on huvec surface

    方法常規制備溫脈通全方溫經益氣拆方活血通脈拆方含藥血清和高脂血清，採用虎紅染色法檢測藥物血清對高脂誘導的人臍靜脈內皮細胞huvec和單核細胞株thp1黏附的作用用細胞elisa法檢測huvec表面細胞間黏附分子1 icam1血管細胞黏附分子1 vcam1 p選擇素pselectin的表達。
  6. The transformed hairy roots were detected for agropine to make sure the transformation was successful. a conclusion was reached as follows : agrobacterium rhizogenes r1601 was an ideal strain for hairy roots transformation from trichosanthes bracteata voigt which exhibited extraordinary transformation rate ( 60 % ). od600 = 0. 7 was the optimum infection concentration for the tested transforming agent, with temperature at 25, ph at 6. 0, 20min of infection and 48h of co - culture and phytohormone at 1. 0mg / l being the most favourable hairy root - inducting pattern

    通過實驗和對結果的數據分析，得出下面的結論：發根農桿菌r1601是較好的大苞栝樓發根的誘導菌株，它對預培養24h的大苞栝樓子葉外植體具有最好的轉化效率和發根誘導率（ 60 ） ，最適的菌株感染濃度od _ （ 600 ）為0 . 7 ，溫度27 、 ph值為6 . 0 、 20min的感染時間和48h的共培養，以及黑暗條件和1 . 0mg / l的激素最有利於發根誘導的環境條件。
  7. Aimed at developing a set of methods efficient in inducing the hairy roots with agrobacterium rhizogenes from trichosanthes bracteata voigt to meet needs for hairy roots for bioreactor culture research and application ; and also in order to investigate the roles of explants, agrobacterium rhizogenes, affecting factors and their magnitude and the underlying mechanism in the transformation, therefore to determine the optimum explants, pre - culture time, tested strain concentration, infection time, co - culture time, affecting factors and their effects working together and to obtain the optimum transforming condition by performing orthogonal test, this project was launched. with cotyledons and stems from trichosanthes bracteata voigt plantlets as explants, agrobacterium rhizogenes r1601 and r1000 as infection agents, transformation was performed using different methods and under various circumstances

    為了建立一種有效的誘導大苞栝樓發根的方法及其發根培養體系，以適合於發根生物反應器擴大培養研究和應用基礎的需要；本研究對誘導發根的外植體在發根農桿菌和環境因子等影響作用下進行發根的誘發及其可能的機理進行探討，從而找出用於發根誘導和培養的最佳外植體、預培養時間、發根農桿菌濃度、感染時間和共培養時間、誘導條件，並通過正交試驗得出優化的誘導條件。
  8. Electro motive strain is a common method used to measure the maximum strain in stress concentration district, or mostly to extrapolate certain unknown value of stress utilizing some known value

    應變電測法是測量應力集中區最大應變值的一種比較常用的方法，主要是利用某些可測點的值去推測不可測點的值，即通常所說的外推法。
  9. Analysis results of histogram statistics and section electron microscopic scan technique, are that fracture feature of the cracks of the hbbb is similar and the crack is multi - source strain fatigue one. internal defects of the cast, such as impurities, gas holes, etc, are the main causes for early cracks. the contrast analysis of static strength, model and transient respond on three structures with fem proves that geometrical stress concentration in partial area has influence on early crack, also

    利用直方圖等統計方法和電鏡掃描技術對該抱軸箱體裂紋分析的結果是：抱軸箱體的裂紋斷口特徵相近，裂紋性質屬于多源性低周疲勞裂紋，鑄件中的夾雜、氣孔等內部缺陷是導致過早裂損的主要原因；利用有限元法對該抱軸箱體三種結構的靜強度、模態和動態響應對比分析，證實了局部幾何性應力集中對過早裂損也有一定影響。
  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 regional deformation anomaly of medium - term phase ( 1 ~ 3 years or more ) before strong earthquake occurrence usually shows three aspects of common characteristics : for regional vertical deformation, it shows distribution features of anomalous uplift area and concentration belt - high gradient belt of vertical differential deformation ( some of them reflect distribution of four quadrants ) related to tectonics ; for horizontal movement, it shows features of centralized high strain area ( or zone ) of domination shear deformation related to active blocks and faults ; it shows common features of regional vertical deformation anomaly area and high strain distribution area of horizontal deformation

    摘要強震前中期階段（ 1 ~ 3年或稍長）區域性形變異常往往表現出3個方面的共性特徵：區域垂直運動變形呈現與構造有關的異常隆起區、垂直差異變形高梯度帶（有的還呈「四象限」 ）分佈特徵；水準運動變形呈現與活動地塊及斷裂構造有關的、以剪切變形?主的高應變集中區（帶）特徵；區域性垂直形變異常區與水準形變的高應變分佈區共性的特徵。
  12. The results showed that temperature 25 - 30, ph7. 0, anaerobic and illuminated conditions were optimum for decolorization. when reactive violet kbr was decolorized as sole source of carbon and energy of n strain, the decolorization rate of reactive violet kbr was significantly correlative to cell concentration, however the decolorization specific activity of n strains was not affected markedly by cell concentration

    結果表明，該菌株生長細胞脫色的最佳條件為溫度25 - 30 ， ph7 ，厭氧條件下的脫色率遠遠高於好氧條件下的脫色率。染料作為該菌株唯一的碳源和能源脫色時，脫色率與細胞濃度呈極顯著相關，細菌脫色比活率保持在較恆定的水平。
  13. Strain 041381 was isolated from seamuds, optional concentration of nacl for its growth was 6 %, and its maxium tolerant concentration of nacl was 20 %

    海洋微生物菌株041381分離自海泥，其最適生長nacl百分比濃度是6 ，能夠耐受最高的nacl百分比濃度為20 。
  14. The expression conditions of e2 gene in p. pastoris were optimized, the results indicated that the peak obtained after 72 hours ; pattern of inhibition / induction could improve expression level ; the best ph value were between 7. 5 and 8. 0 and the optimized methanol - induced concentration was 2 % - 3 % the e2 genes of the prevalent strain ( guangxi yulin strain ) and c strain derived from rabbit spleen tissue were amplified and cloned into e. coli the expression vector pproex - htb respectively, the recombinant plasmids pproex - gxyl and pproex - c were obtained and then were transformed into the dh5a e. coli competent bacteria respectively, the recombinant bacteria could express the major antigen region of e2 gene, the expression yields amount to 35 % and 38 % repectively

    豬瘟病毒ez基因的原核表達： pcr擴增出當前豬瘟流行野毒株，中國豬瘟兔化弱毒（ c株）兔脾組織毒ez基因的主要抗原區，將其克隆到原核大腸桿菌表達載體pproex htb中誘導表達，經sds page檢測表明，重組質粒能表達ez基因主要區蛋白， westernblot檢測表明，誘導表達蛋白與豬瘟陽性血清發生特異性反應，表達量為35和38 ，可用於基因工程診斷抗原。
  15. 2. the strain can grow on ycg medium supplemented with amp, up to the concentration of 400ug / ml, whilst the original one cannot grow on the same medium even at 50ug / ml of amp

    而且在ycg培養基中， amp濃度高達400ug ml時仍有菌落生長。同樣條件下， ss - ori菌在amp濃度為50ug ml時就不生長。
  16. Theoretically speaking, certain crack or damage in structure will result in reduction of stiffness in the local part, and also will result the stress and strain concentration in the same part

    理論上，結構的局部裂縫或損傷必然會導致結構局部剛度降低，從而使應變在損傷處發生集中，應變模態振型數值發生突變。
  17. The synthesis of poly ( - hydroxybutyrate - co - - hydroxyvalerate ) by the strain g - iiiy from different precusor was studied. it was found that the strain g - iiiy could accumulate phbv with sucrose as carbon source and propionic acid or valeric acid as precursor. in 2l self - controlled fermentor, the dry cell weight, phbv concentration and phbv content reached 35. 8g ? l - 1, 22. 6g ? l - 1 and 38. 4 % respectively in the case of fermentation for 42 hours and the propionic acid as precursor

    研究了添加不同前體物， g - y菌株生產聚-羥基丁酸和聚-羥基戊酸共聚物（ phbv ）的發酵條件，結果表明，此菌株能以丙酸或戊酸為前體，在蔗糖為碳源的條件下合成phbv共聚物；在2l發酵罐中，以丙酸為前體，發酵16小時開始流加丙酸，根據發酵液ph值變化控制丙酸流加量，發酵42小時，細胞干重、 phbv產量和含量分別達到35 . 8g / l ， 22 . 6g / l ， 63 . 13 。
  18. Induced either by iptg or l - tryptophan in the absence of easily metabolized carbon such as glucose the strain bl21 ( de3 ) / pet28c - tnaa can express tryptopanase. the fermentation conditions were optimized respectively. in the presence of glucose and iptg as induce agent, the concentration is the crucial factor for expression of active tryptophanase. if the iptg concentration is less than 0. 2mm, the optimum temperature is 37 lower temperature is necessary to obtain active tryptophanase in the case of higher concentration of iptg

    用iptg誘導表達實驗結果表明：利用t7啟動子在胞內能表達出有活性的酶； iptg與溫度的合適組合可以得到較高活性的色氨酸酶，在0 . 2mm以下濃度的iptg誘導時， 37是最適溫度，而用較高濃度的iptg誘導，低溫是表達有活性的色氨酸酶的必要條件，而且誘導時間要短。
  19. Keeping the ph of the culture broth at 6. 0, the initial glucose concentration of l %, the strain could produce 14. 5g / l trehalose after reaction at 50 for 6 hours, the production of trehalose increased by 62. 2 % than that of flask - shaking culture

    0 ，溫度50c條件下，發酵6h ，可使海藻糖的合成總量達14 sg l ，比搖瓶反應的海藻糖合成量增加了62 2 。
  20. After 1989, the increase of demand slowed down and facing the complexion of low degree of industrial concentration of product market and financial strain of medi um and small - sized enterprises caused by the circulating trap of " credit squeeze - - - bad loan ", the advantageous enterprises " " wallow in money ", specifically, those listed companies that could finance from the stock market, began to take predatory pricing strategy in succession and tried to enlarge market share and obtain high return by squeezing medium and small - sized enterprises out of the market after 1998, the vicious circle of deflation and " credit grudging " of banks in product and credit markets, overcapacity, the difficulty of retreating of loss - incurring enterprises in some industries from the market for institutional reasons and over - competition in some industries, led to the incessant decrease of enterprises " global income, persistent increase of rate of debts and constant rise of ratio of bad assets of banks, which further intensified the vicious circle of deflation and " credit grudging " of banks

    如在改革開放初期，在產品市場需求旺盛和信貸市場預算軟約束的情況下，各類企業的最優決策就是採用高負債、高擴張的「負債的有限責任效應」策略來搶占市場並獲得高回報； 1989年以後，需求增速開始放緩，面臨產品市場產業集中度較低和信貸市場「信貸緊縮-不良貸款」循環陷阱導致的中小企業資金緊張的局面， 「錢袋鼓鼓」的優勢企業（尤其是那些可以通過股票市場融通資金的上市公司）紛紛採用掠奪性定價策略，試圖通過把中小企業擠出市場來擴大市場份額並獲得高收益； 1998年以後，產品市場和信貸市場形成了通貨緊縮和銀行「惜貸」惡性循環的狀況。產品市場上部分行業生產能力嚴重過剩，且由於體制等原因導致虧損企業無法退出，因此這些行業中出現了過度競爭的現象，企業總體收益的不斷下滑、負債率不斷提高以及銀行不良資產率的持續上升，又進一步加強了通貨緊縮和銀行「惜貸」的惡性循環。
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