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The ADC and SNR of centrum semiovale,cingulate gyrus,thalamus, genu and splenium of corpus callosum were calculated separately,and were compared on both conventional DWI and FLAIR-DWI.

结果:扣带回和胼胝体压部的ADC值在施加FLAIR脉冲后显著下降,而半卵圆区、丘脑及胼胝体膝部在施加FLAIR脉冲前后无明显变化;5个部位的DWI图像信噪比在施加FLAIR脉冲后均显著下降(P〈0.01)。

Results It showed that the sensitivity for pure tone,the discrimination score for speech and cognitive function were decreased,the threshold of stapedial reflex were elevated,the percentage of recruitment ear were increased,but the interpeak latency of ABR were normal,the wave latency of P300 were prolonged,but the amplitude were diminished obviously as compared with yonger group.

结果 与青年组相比,老年人纯音听敏度减退;言语识别率下降,中枢听觉认知功能减退,镫骨肌反射阈有不同程度提高、重振耳数随耳聋加重而增多;听性脑干反应各波间期无变化;P300认知电位波潜伏期延长,波辐下降

Under inverted microscope, stereognosis of neurons died down, there were blank bulb in the neurons, dark particle were seen in the neuritis; the result of MTT test showed that the survival rate of neurons was obviously decreased. Res 40μmol/L increased the survival rate of neurons. Aβ(subscript 25~35) dose-dependently increased the level of MDA, decreased the level of GSH. Res dose-dependently increased the level of GSH, decreased the level of MDA.

结果:Aβ(下标 25~35)在终浓度为2μmol/L时神经元形态有明显的变化,细胞立体感减弱,胞体内空泡形成,细胞突起内可见黑色颗粒状物;细胞的存活能力明显下降,与对照组相比较有显著性差异(P.05);Res在终浓度40μmol/L时,能明显提高细胞的存活能力。Aβ(下标 25~35)可以明显升高细胞培养上清液中MDA含量,降低GSH的含量;Res可使细胞培养上清液中MDA含量下降,GSH含量增加。

The tensile property was improved and then stable with the increasing content of coupling agent, however, the crupture ratio up and then down. And the tensile strength increase stey by step and electric insulation property is up and then descended with the addition of radiation agents.

结果表明,随着阻燃剂含量的增加和粒径超细化,其阻燃性能不断得到提高;而随着偶联剂含量的增加,其拉伸强度逐渐增大到一定程度后趋向稳定,断裂伸长率则先增大后下降;随着辐照剂量的增大,拉伸强度逐渐增大,电气绝缘性能先上升后下降

Under light water stress, the main reason is the stomatic limitation; under heavy water stress that is nonstomatic limitation.

轻度水分胁迫(SRWC在60%~40%)下,气孔限制是Pn下降的主要原因;严重水分胁迫(SRWC在40%~20%)下,Pn的下降主要是非气孔限制的结果。

Mol-1 of ozone are compared to those from the control run, indicating that from the heading to mature stage contents of chlorophylls a and b as well as the total increase first and then drop, but the carotenoid content and the value of value of chl a/b keep steadily rising and declinling, respectively, there is no significant decrease in the net photosynthetic rate and stomatic conductance during the early stage of heading but their drops increase gradually with prolonged smoking time.

mol-1的O3处理下,与对照相比,从抽穗期到成熟期冬小麦叶绿素a、叶绿素b和总叶绿素含量均呈先上升后降低的变化趋势,而类胡萝卜素的含量和Chla/b的比值则分别持续升高和下降,净光合速率和气孔导度在抽穗初期无明显下降,但是随着熏蒸时间的增加下降幅逐步变大。

The result showed that the photosynthetic rate, chlorophyll-a content and chlorophyll-b content decreased significantly with the increase of salinity concentration and the prolongation of stress time, while the stomatic conductance and intercelluar CO2 content decreased early and then increased.

结果表明,盐胁迫条件下,净光合速率、叶绿素a含量、叶绿素b含量随着盐胁迫浓度的增加和时间的延长总体上呈现下降趋势,而气孔导度和胞间CO2浓度总体上呈现先下降后上升的趋势,叶片Chlb/Chla比值随盐胁迫时间的延长逐渐升高。

According to transpiration rate, extracells CO2 concentration, stomatic conductance of four alfalfa varieties under water-stress, it was concluded that reduction of photosynthetic rate was primarily resulted from stomatal factors under light and medium water stress and nonstomatal factors under severe water-stress in the experiment during branching.

通过分析水分胁迫紫花苜蓿分枝期叶片气孔导度、蒸腾速率和胞间CO2浓度的变化,认为试验中轻度和中度水分胁迫下光合速率下降的主要因素是气孔因素,重度水分胁迫下光合速率下降的主要因素是非气孔因素。

The results showed that the growth of Jinguang plum seedlings were remarkably restrained by salt stress. With the increasing of salt concentration, the plant height, leaf area, leaf fresh weight, leaf dry weight, stem dry weight and root dry weight were remarkably decreased, and the chlorophyll content, photosynthesis rate, transpiration rate and stomatic conductance in leaves were declined too, but the intercellular CO2 concentration was inclined.

结果表明盐胁迫抑制了金光杏梅幼苗的生长,随着盐浓度的升高,金光杏梅的株高、叶面积、叶鲜重、叶干重、茎干重、根干重均显著降低;叶片叶绿素含量、净光合速率、蒸腾速率、气孔导度亦显著降低,且盐浓度越高,下降幅度越大;细胞间隙CO2浓度随着盐浓度增加而增大,表明盐胁迫下非气孔因素是导致金光杏梅叶片光合速率下降的主要原因。

In the 198 cases,the muscular tension of low limb descended 3 grades with an average;in the 12 cases,the muscular tension of upper limb descended 1.1 grades with an average.The symptoms of strabism,drooling and language disorder had been ameliorate.

结果:194例下肢痉挛消除,按Ash-worth肌张力标准,下肢肌张力平均下降3·0级,12例上肢肌张力平均下降1·1级,眼斜视、流涎及语言障碍等伴随症状也有改善。

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