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临界敏感
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  critical sensitivity
     Direction character of “critical sensitivity” phenomena in neural firing pacemaker
     神经放电起步点对电场刺激反应“临界敏感”现象的方向性特征
短句来源
     CRITICAL SENSITIVITY" PHENOMENA OF NEURAL FIRING PACEMAKER TO ELECTRICAL FIELD STIMULUS
     神经放电起步点对电场刺激反应的“临界敏感”现象
短句来源
     AIM: To explore the direction characteristics of “critical sensitivity” phenomena in neural firing pacemaker.
     目的 :揭示神经放电起步点“临界敏感”现象的方向性特征 .
短句来源
     CONCLUSION: The “critical sensitivity” phenomena in neural firing pacemaker have direction characteristics.
     结论 :神经放电起步点对电场刺激反应的“临界敏感”现象具有方向性特征
短句来源
     It is concluded that the response to electrical field stimulus in the critical state, which is near a bi furcation, is more sensitive than that in the period state, this is named as "critical sensitivity"phenomena.
     结果提示邻近分岔点的临界阶段对电场刺激的反应较周期阶段敏感,称之为“临界敏感”现象。
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  “临界敏感”译为未确定词的双语例句
     2> kanamycin sensitive experiment showed that the critical kanamycin sensitive concentrations for inducing shoots and roots of the poplar were 50 mg/L and 60mg/L.
     2通过卡那霉素敏感实验,确定了杨树叶片不定芽诱导卡那霉素临界敏感浓度为50mg/L,不定芽生根诱导卡那霉素临界敏感浓度为60mg/L;
短句来源
     The critical kanamycin sensitive concentrations for inducing shoots and roots of the Qingmei kiwifruit were 50 mg/L and 40 mg/L.
     秦美猕猴桃叶片不定芽诱导卡那霉素临界敏感浓度为50mg/L,不定芽生根诱导卡那霉素临界敏感浓度为40mg/L。
短句来源
     3. Kanamycin sensitive test showed that the critical kanamycin sensitive concentration for inducing shoots and roots of P. tomentosa was 20mg/L and 25mg/L, respectively.
     3.通过卡那霉素敏感性试验,确定了叶片外植体不定芽诱导卡那霉素临界耐受浓度为20mg/L,试管苗不定根再生临界敏感浓度是25mg/L。
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  相似匹配句对
     (M, H)-Critical Matrices
     (M,H)-临界矩阵
短句来源
     Environmentally Sensitive Thresholds of Phosphorus of Paddy Soils
     水稻土磷环境敏感临界值的研究
短句来源
     Responsive crown ethers
     敏感冠醚
短句来源
     The down critical potential and sensibility zone of SCC was ascertained.
     确定了该体系的下临界电位和SCC敏感电位范围。
短句来源
     ON THE SENSITIVITY OF THE EDITOR
     论编辑敏感
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  critical sensitivity
Critical Sensitivity and Trans-scale Fluctuations in Catastrophic Rupture
      
Based on a coupled pattern mapping model, we represent critical sensitivity and trans-scale fluctuations associated with catastrophic rupture.
      
Critical sensitivity means that a system may become significantly sensitive near catastrophe transition.
      
The underlying mechanism behind critical sensitivity and trans-scale fluctuations is the coupling effect between heterogeneity and dynamical nonlinearity.
      
Critical sensitivity may be the physical mechanism underlying a promising earthquake forecasting method, the load-unload response ratio (LURR).
      
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AIM: To explore the direction characteristics of “critical sensitivity” phenomena in neural firing pacemaker. METHODS: Interspike intervals (ISIs) sequence of A type fiber discharge was recorded from the neural firing pacemaker of chronic constriction of sciatic nerve in rats. Under calcium free condition, the ISIs sequence branched into period adding bifurcation and certain concentration of EGTA (a kind of calcium chelator) of the perfusion solution stabilized the firing pattern at period state, critical...

AIM: To explore the direction characteristics of “critical sensitivity” phenomena in neural firing pacemaker. METHODS: Interspike intervals (ISIs) sequence of A type fiber discharge was recorded from the neural firing pacemaker of chronic constriction of sciatic nerve in rats. Under calcium free condition, the ISIs sequence branched into period adding bifurcation and certain concentration of EGTA (a kind of calcium chelator) of the perfusion solution stabilized the firing pattern at period state, critical state before bifurcation and critical state after bifurcation. Response to electrical field stimulus at different dynamic states was observed. RESULTS: At critical state before bifurcation, excitatory electrical field stimulus of certain intensity induced an obvious increase of firing rate and a transition of firing pattern. Inhibitory electrical field stimulus of the same intensity, however, decreased the firing rate slightly but with no transition of firing pattern. At critical state after bifurcation, inhibitory electrical field stimulus of certain intensity resulted in a markedly decrease of firing rate with a transition of firing pattern, but excitatory electrical field stimulus of the same intensity increased the firing rate slightly but with no transition of firing pattern. CONCLUSION: The “critical sensitivity” phenomena in neural firing pacemaker have direction characteristics.

目的 :揭示神经放电起步点“临界敏感”现象的方向性特征 .方法 :在大鼠坐骨神经慢性压迫模型的放电起步点上 ,记录A类单纤维放电的峰峰间期 (ISIs)序列 .当无钙条件下ISIs序列进入加周期分岔过程后 ,改变灌流液EGTA(钙离子螯合剂 )浓度使其分别稳定于周期阶段、分岔前临界阶段及分岔后临界阶段 ,观察不同动力学阶段对电场刺激的反应 .结果 :在分岔前临界阶段 ,一定强度的兴奋性电场刺激可使放电频率显著增加 ,放电模式发生转化 ,而同样强度的抑制性电场刺激可使该阶段放电频率平缓减少 ,放电模式不变 ;在分岔后临界阶段 ,一定强度的抑制性电场刺激则使放电频率显著减少 ,放电模式发生转化 ,而同样强度的兴奋性电场刺激仅使该阶段放电频率平缓增加 ,放电模式不变 .结论 :神经放电起步点对电场刺激反应的“临界敏感”现象具有方向性特征

Interspike intervals (ISIs) sequence of discharge of single fiber was recorded from the neural firing pacemaker of chronic constriction of sciatic nerve in rat. Under calcium-free condition, th e ISIs sequence entered into period-adding bifurcation, certain concentr ation of EGTA (a kind of calcium chelator) of the perfusion solution stabilized the firing pattern at period state which was far from a b ifurcation or critical state which was near a bifurcation. Relationship between the response to electrical field...

Interspike intervals (ISIs) sequence of discharge of single fiber was recorded from the neural firing pacemaker of chronic constriction of sciatic nerve in rat. Under calcium-free condition, th e ISIs sequence entered into period-adding bifurcation, certain concentr ation of EGTA (a kind of calcium chelator) of the perfusion solution stabilized the firing pattern at period state which was far from a b ifurcation or critical state which was near a bifurcation. Relationship between the response to electrical field stimulus and bifurcation dyn amic state was analyzed. The following results were observed, the same intensity of electrical field stimulus induced a much more firing ra te increase in the critical state than that in the period state, and in the critical state electrical field stimulus often resulted in a transition of firing pattern. In the period state, during increasing of the intensity of electrical field stimulus, firing rate increased i n an approximately linear manner and there was no change of firing p attern. While in the critical state, firing rate increased obviously w ith the transition of firing pattern when the intensity of electrical field stimulus was high enough. It is concluded that the response to electrical field stimulus in the critical state, which is near a bi furcation, is more sensitive than that in the period state, this is named as "critical sensitivity"phenomena.

在大鼠坐骨神经慢性压迫模型的放电起步点上,记录单纤维放电的峰峰间期(ISIs)序列。在无钙条件下,ISIs序列进入加周期分岔过程后,通过调定灌流液乙二醇双四乙酸(EthyleneGlycol-bis(茁-aminoethylEther)N,N,N',N'-TetraaceticAcid,EGTA,一种钙离子螯合剂)的浓度,使ISIs序列分别稳定于远离分岔点的周期阶段(称周期阶段)或邻近分岔点的阶段(称临界阶段),分析电场刺激反应与分岔动力学状态的关系。实验观察到,相同强度的电场刺激可使周期阶段和临界阶段的放电频率增加,但后者的增加幅度比前者显著,并伴有放电模式的转化。在周期阶段,随电场刺激强度增大,放电频率近似线性增加,放电模式不变;在临界阶段,当电场刺激达到一定强度时,放电频率增加的斜率显著增大,此时,放电模式也发生转化。结果提示邻近分岔点的临界阶段对电场刺激的反应较周期阶段敏感,称之为“临界敏感”现象。

Objective To compare the difference of drug susceptibility of Mycobacterium tuberculosis(MTB) by using both absolute concentration method with different bacterium quantity and proportion method.?Methods The 53 probable drug-susceptible or drug-resistant strains of MTB were selected.The bacterial suspensions of MTB were prepared using Mcfarland method.0.1 ml of bacterial suspensions(including 10~(-4),10~(-5),10~(-6) mg/ml) was incubated for MTB CFU,respectively.0.1 ml of bacterial suspensions(including 10~(-2),10~(-3)...

Objective To compare the difference of drug susceptibility of Mycobacterium tuberculosis(MTB) by using both absolute concentration method with different bacterium quantity and proportion method.?Methods The 53 probable drug-susceptible or drug-resistant strains of MTB were selected.The bacterial suspensions of MTB were prepared using Mcfarland method.0.1 ml of bacterial suspensions(including 10~(-4),10~(-5),10~(-6) mg/ml) was incubated for MTB CFU,respectively.0.1 ml of bacterial suspensions(including 10~(-2),10~(-3) mg/ml) was incubated for the drug susceptibility testing with absolute concentration method,respectively.0.1 ml of bacterial suspensions(including 10~(-3),10~(-5) mg/ml) was incubated for the drug susceptibility testing with proportion method,respectively.?Results The number of MTB CFU was from 5×10~6 CFU/ml to 5×10~7 CFU/ml in Mcfarland method.The accordance rate of isoniazid and rifampicin drug susceptibility in 10~(-2) and 10~(-3) mg/ml of MTB was 98.1%,100.0% using absolute concentration method,respectively.The accordance rate of isoniazid and rifampicin drug susceptibility of MTB was from 90.6% to 100.0% with absolute concentration method and proportion method.?Conclusion The result of drug susceptibility of MTB using absolute concentration method and proportion method is accordant.

目的比较接种不同菌量结核分枝杆菌(MTB)绝对浓度法药物敏感性(药敏)与比例法药敏的差异程度,为MTB药敏检测准确性提供参考。方法选择临界敏感或临界耐药MTB菌株53株,用比浊法制作MTB菌悬液,10倍梯度稀释,10-4、10-51、0-6mg/ml菌悬液0.1 ml接种于改良L-J培养基上作活菌计数,10-2、10-3mg/ml菌悬液0.1 ml接种于含INH、RFP改良L-J培养基上作绝对浓度法药敏,10-31、0-5mg/ml菌悬液0.1 ml接种于含INH、RFP改良L-J培养基上作比例法药敏。结果MTB活菌计数值多在5×106~5×107CFU/ml。10-2、10-3mg/ml菌悬液绝对浓度法药敏一致率INH、RFP分别达98.1%、100.0%;绝对浓度法与比例法药敏符合率INH、RFP均达90.6%~100.0%。结论不同菌量MTB绝对浓度法药敏结果与比例法药敏结果比较一致性好,在常规药敏检测中不会影响结果的准确性。

 
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