查询词典 DMA

We studied the influence of 5-(N, N-dimethyl) amiloride on Ca〓 transient and cell contraction and its relation to reverse mode Na〓/Ca〓 exchange in normal and hypertrophied rat cardiac cells.

3观察DMA作为钠钙交换激动剂对正常和心肌肥厚大鼠心肌细胞钙瞬变及收缩的影响，及其与反向钠钙交换的关系。

To investigate the structure change and movement status of molecule in wood caused by different reagents, the dynamic viscoelastic properties of Chinese fir wood treated by NaClO3 , DMSO, DEA-SO2-DMSO and nontreated wood under the fiber saturated point, temperature from - 100-10℃ at frequencies between 0.5 and 10 Hz were examined by DMA.

为了弄清楚不同化学试剂处理引起木材内部分子构造的变化及其分子的运动状态，该研究针对杉木试材，采用动态粘弹性分析仪，测定了含水率在纤维饱和点状态下脱木索处理木材、DMSO处理木材和非晶化处理木材以及素材，在-100—10℃、0.5-10Hz的动态粘弹性。

The results indicated that the decoloration of three orcein dyes on EPI-DMA/Bt were much better than on Na-Bentonites. The relationship between adsorptive capacity and equilibrium concentration fitted the isothermal adsorption equations of Langmuir and Freundlich. The adsorption dynamics followed the law of Langmuir equation.

结果表明，聚环氧氯丙烷二甲胺/膨润土对三种染料的吸附脱色能力明显大于钠基膨润土，平衡吸附量 q e与平衡浓度 C e之间的关系均符合Langmuir和Freundlich等温吸附模型，吸附动力学行为遵循Langmuir方程所述规律。

Densities of glycine and L-serine in aqueous LiNO3, NaNO3 and KNO3 solutions have been measured at 298.15 K with an Anton Paar Model 55 densimeter. Apparent molar volumes, limiting partial molar volumes and transfer volumes have been calculated. Hydration numbers and volumetric interaction coefficients for amino acids were evaluated.

用Anton Paar DMA 55精密数字密度计测定了甘氨酸和L-丝氨酸在LiNO3， NaNO3和KNO3水溶液中的密度，计算了氨基酸的表观摩尔体积、极限偏摩尔体积、迁移偏摩尔体积、理论水化数和体积作用系数。

In this part, the densities of sodium benzoate, sodium nitrobenzoate, sodium chlorobenzoate and sodium methylbenzoate in DMFwater mixed solvents have been measured at 298.15K with an Anton Paar Model 55 densimeter. From these densities, apparent molar volumes and partial molar volumes have been calculated, transfer volumes from water to DMF-water mixtures and substituent contributions to the transfer volumes have also been obtained. Solvent and substituent effects are discussed in detail. The Scaled Partical Theory has been applied to the ternary solutions to evaluate the partial molar volumes of cavity formation and the volumes change associated with solute-solvent interaction.

选择了含有取代基团的芳香类有机电解质，主要是苯甲酸钠、硝基苯甲酸钠、氯苯甲酸钠和甲基苯甲酸钠的邻、间、对同分异构体作为研究对象，用DMA 55型振荡管密度计测定了它们在不同质量百分数组成的DMF-水混合溶剂中的密度，利用这些密度数据，计算了表观摩尔体积和偏摩尔体积，得到了这些单取代苯甲酸钠从水到DMF-水混合溶剂中的迁移偏摩尔体积及苯环上不同位置的取代基对迁移偏摩尔体积的贡献值，讨论了溶剂效应和取代基效应，并将定标粒子理论应用于此三元电解质溶液中。

Determining the dilution enthalpies of DMF and DMA in aqueous glycerol solutions of various molalities, we discussed peptide bond and hydrophobic side chains interacting with glycerol in aqueous solutions. Molecular dynamics simulating ethylene glycol and glycerol solutions have been done to study the microscopic structure of polyhydroxy compounds solutions.

本文用滴定量热法研究了298.15K下酰胺(N—甲基甲酰胺、N，N—二甲基甲酰胺、N—甲基乙酰胺和N，N—二甲基乙酰胺)分别在于MAO水溶液和尿素水溶液中的焓相互作用，探讨了溶剂变化对酰胺侧链相互作用的影响，从肽键及疏水侧链角度研究了TMAO和尿素对蛋白质稳定性的影响。

DMA shows that there is a good nterfacial bonding between n2HA and 1 , 2 - PPSC mat rix.

动态力学性能的测试结果表明， n2 HA 与 1 ， 2 - PPSC基体之间生成了良好的界面结合。

In order to improve the mechanical properties and thermal stability of UP,in-situ hybrid composites of thermotropic liquid crystalline polymer with the group of —NCO synthesized by us,unsaturated polyester and glass fiber were successfully prepared by melt mixing technology and compression molding.

为了改进不饱和聚酯树脂在高低温和交变应力下力学性能和热稳定性较差的缺点，利用自行合成的端基含有活性基团的热致性液晶聚合物对不饱和聚酯/玻璃纤维复合材料改性，用DMA测试了共混物的动态力学性能，用扫描电镜对材料断面的形态结构进行了研究。

The grafting effect and mechanism was charac- terized by FTIR,The heat stability of unvulcanized and dynamical mechanical proper- ty of vulc- lcanizates of SBR and SBR-g- were tested by TG and DMA respectively. medium-resistance properties of SBR and SBR-g- vulcan- izates were also investigated.The results showed that addition of St accelerated GMA grafting onto SBR and control the decomposition of SBR. When the conditions were GMA/St/DCP was 8/4/0.3 and grafting temperature was 160℃.

结果表明，St对提高接枝率、抑制SBR的降解起到了积极的作用；SBR中聚丁二烯的α－H和双键共同参与了GMA/St熔融接枝反应；当SBR/GMA/St/DCP=100/8/4/0.3、接枝温度为160℃时，SBR的接枝率较高（23.78%），SBR–g–硫化胶的拉伸强度和撕裂强度比SBR硫化胶的分别提高了119%和27.4%；SBR–（GMA--co-St）未硫化胶的Tg比SBR未硫化胶的高，而耐热分解性能优于SBR未硫化胶；SBR–g–硫化胶在低温条件下的刚性增大、弹性降低、具有较低的内耗，在常温下的阻尼性能较高，但弹性性能保持较好；SBR–g–硫化胶的耐热稳定性以及耐非极性有机溶剂的性能优于SBR硫化胶。

On some systems, you will be prompted to select the I/O addresses, IRQ and

有些系统可能需要你选择一下声卡的I/O地址，IRQ和DMA。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。