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Therefore appropriate amount of Ca(superscript 2+) or 504 (superscript 2-) can improve chemical imbibition and recovery factor of core.

添加适量的Ca(上标 2+)或SO4(上标 2-)，可以促进岩心的化学渗吸，从而提高岩心渗吸采收率。

The proofs of the Zero theorem and indefinite integral ∫(superscript 1)(subscript 0)e(superscript -x^2) are given by research learning method.

本文论述了如何应用研究性学习方法证明零点定理及不定积分∫e(上标-x^2)dx，其方法简便，理论性强，对培养学生的创新能力有一定的作用。

For k≥3, we show the infimum of α is 0 and adduce the G(superscript 1,s subscript k+1) graph is which causes α=0; using the foregone conclusion we characterize the G(superscript 1,s subscript k+1) graph which has a k-role assignment.

本文证明了k≥3时，a的下确界为0，并证明了当图G(上标 1，s 下标 k+1)图且a(s+1)≠0(mod k+1)(a=2，3，4)时，α达到下确界；最后还刻画了能够(n-1)-角色分配的G(上标 1，s 下标 n)图。

The relationship between the G(superscript *) integral of release rate of non-spontaneous extending energy and stress-intensity factors was given. The relationships among G(superscript *) integral, load, geometry parameters and machine function parameters were provided. Furthermore, the stress intensity factor of center cracks in sectional I beam was obtained.

给出了工字型截面梁裂纹非自发扩展能量释放率G积分与应力强度因子的关系，同时也给出了G积分与载荷、几何参量以及机械性能参数的关系，进而得到工字型截面梁腹板中心裂纹的应力强度因子。

The results of calibration of 4He in desorption system show that the correlation coefficient is more than 0.99 and the contribution of memory effect can be ignored. The contribution of ionized atom T(superscript +) for partial pressure of m/e=3 is very little and is determined according to I+≈0.01I(subscript T2)+, so the measurement of 3He can be done without interference of T(superscript +). The relationship between gases release rate and annealing temperature can be obtained after the data are smoothed and differentiated.

研究结果表明：四极质谱计标定解吸系统内4He的分压＜350 Pa时，其相关系数R＞0.99，且记忆效应的贡献极弱；离子态氚T对m/e=3组分分压的贡献可按I+≈0.01I(下标 T2)+确定，不干扰3He的测定；将气体解吸所得的积分数据经平滑并微分处理后可准确得到气体释放速率与退火温度的关系，即热解吸谱。

Conductance of leaf lixivium was reduced by the decrease of NH4(superscript +)-N/NO3(superscript -)-N ratio.

结果表明，在NH4-N/NO3-N比例较低时，模拟水分胁迫使广陵香粳水稻幼苗吸收更多的NO3-N。

Under none water stress conditions, the conductance of leaf lixivium increased with the decrease of NH4(superscript +)-N/NO3(superscript -)-N ratio.

而在正常水分培养条件下，水稻幼苗叶片浸出液电导率随NH4-N/NO3-N比例的降低呈上升趋势。

Intracellular reactive oxygen species level and free Ca(superscript 2+) concentration Ca(superscript 2+ were detected with fluorescence probe, and adenosine triphosphate level was detected by using luminometer.

结果 在谷氨酸所致SH-SY5Y细胞损伤模型中，与对照组比较，模型组细胞存活率、SOD活性和ATP水平降低，LDH释放、MDA含量和细胞内ROS水平增加。

The results showed that the magnetizability of Fe3O4 magenetic powders decreased at high adding rate of Fe(superscript 3+)/Fe(superscript 2+).

结果表明，Fe(上标 3+)、Fe(上标 2+)加入速度过快，Fe3O4磁粉磁性降低。

The morphological analysis of strain EMZY-1 showed that it was a straight rod, about 0.3×1.7 in size, and spherical and terminal spore appeared. Results of physiological and biochemical test showed that strain EMZY-1 was a Gram-positive bacteria, and could not grow when temperature was lower than 10℃ or higher than 60℃, pH was lower than 5.0 or higher than 12.0, and the concentration of NaCl was more than 10%. The strain EMZY could grow on the medium as a of sugar, glucose and mannite. The strain could use saccharose, glucose and mannitol as carbon resource, and NH4(superscript +) and NO3(superscript -) as nitrogen resource.

通过对该菌株的形态、培养特征、生理生化特征的研究以及16S rDNA序列分析表明：该菌株为革兰氏阳性菌；细胞为棒杆状，端生孢子，大小约0.3×1.7；温度低于10℃、高于60℃无明显生长；pH低于5.0、高于12.0无明显生长；NaCl质量浓度达到10%菌株不能生长；能在蔗糖、葡萄糖、甘露醇为C源的培养基上生长；NH4、NO3为菌株良好N源。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。