测定

The source,existing form and equilibrium of carbonic acid in natural water are presented in this article,which points out that alkalinity is determined by double indicator that indicates purply at the first terminal point,while at the second terminal point should use methyl red-bromocresol green mixed indicator.

介绍了天然水体中碳酸的来源、存在形式及平衡关系；指出用&双指示剂&法测定水中碱度的第一终点应显粉紫色，第二终点宜采用甲基红-溴甲酚绿混合指示剂；测定游离二氧化碳要用双样测定并严格控制滴定终点；各种碳酸的含量可与pH值、硬度的测定结果进行校核。

Experimental study on effect of acetic acid and carbonic acid on clay's geotechnical behaviors;2. The source,existing form and equilibrium of carbonic acid in natural water are presented in this article,which points out that alkalinity is determined by double indicator that indicates purply at the first terminal point,while at the second terminal point should use methyl red-bromocresol green mixed indicator.

介绍了天然水体中碳酸的来源、存在形式及平衡关系；指出用&双指示剂&法测定水中碱度的第一终点应显粉紫色，第二终点宜采用甲基红-溴甲酚绿混合指示剂；测定游离二氧化碳要用双样测定并严格控制滴定终点；各种碳酸的含量可与pH值、硬度的测定结果进行校核。

Soil organic matter, total nitrogen, available nitrogen and pH are measured with high temperature potassium dichromate oxidation-capacity, semiminim karl method, alkaline hydrolysis pervasion method, and the potentionmeter method respectively.

用五点混合取样法采集广西桂林毛村岩溶区和非岩溶区典型林地、灌草丛地和耕地的0~20cm，20~40cm土壤样品，以高温外热重铬酸钾氧化－容量法测定有机质含量，半微量凯氏法测定全氮含量，碱解扩散法测定有效氮含量，电位法测定pH值。

The adipose derived stem cells of inbreds train of rat wereinduced to differentiate into schwann-like cells and the cells were injectedinto the acellular nerve allograff.The proliferation or adhersion of these cells on the graft were observed by inverted microscope or ScanningElectronic Microscope. Activity of cells were detected using MTT. 10mmnerve gap of inbreds train of rats in two group were bridged by tissue-engineered peripheral nerve or autogenous nerve, the effect wereappraised by naked eye, recovery rate of sciatic function index,nerve-electrophysiological, histology, Transmission ElectronMicroscopy and quantitative analysis of recovery rate of myelinated fiberpopulations,diameter of myelinated fiber and thickness of myelin sheat.

按照前述方法培养并诱导近交系大鼠脂肪干细胞向类Sehwann分化，将诱导分化的脂肪干细胞悬液注入已制备的去细胞同种异体神经支架管中，倒置显微镜观察细胞生长情况；扫描电镜下观察细胞在材料上附着情况；四唑盐比色试验测定细胞活性；取两组近交系大鼠，分别用组织工程化神经和自体神经桥接10mm神经缺损，通过大体观察、坐骨神经功能指数恢复率的测定、神经电生理的测定、组织学光镜观察、透射电镜观察、再生有髓神经纤维计数恢复率、神经纤维直径恢复率、髓鞘厚度恢复率的测定等指标评价实验效果。

Results: Mixed the 25 human serum , each subpackage 8 and sealed, take three put in -20 ℃low-temperature refrigerator, five were placed in 4 ℃ refrigerator. Determined the apoA1, apoB content which put in 4 ℃ refrigerator in1, 3,5,7,14 and 28 days, the measured values of apoA1, apoB are increased, apoB compared with apoA1 increased significantly; then measured 1, 5,7,14 and 28-day stored in -20 ℃ refrigerator, temperated apoA1 , apoB levels, apoA1 determination results more stable, slightly increased, but not obvious; he increasing trend of apoB is more evident.

结果：将25份血清混合后每份分装8管密封，取3管放-20℃的低温冰箱保存，5份放入4℃冰箱保存，测定当天及第3、5、7、14、28天存放在4℃冰箱中的apoA1、apoB的含量，apoA1、apoB的测定值均增加，apoB比apoA1增加明显；测定当天及第5、7、14、28天存放在-20℃低温冰箱中的apoA1、apoB的含量，apoA1测定结果较稳定，稍有增加，但并不明显；apoB的增加趋势则较为明显。

This thesis studies the analytical methods of determination of Leucogen and Hydroxymethylnicotinamide by Ultraviolet and Atomic Absorption Spectrscopy.

本文研究了分光光度法和原子吸收光谱法测定利血生及羟甲基烟酰胺的分析方法，提出了利血生的三种测定方法和羟甲基烟酰胺的一阶导数峰-零法的测定新方法，并用于实际样品的测定，获得满意结果。

A new blasting vibration method,which is different from the traditional method to measure the delay time of detonating cord detonator,is proposed through studying the testing process and principle.

通过观察导爆管雷管延期时间的测定过程和研究测定控制原理，提出了与传统测定方法不同的爆破振动测定方法。

In this paper,the Graphite Furnace Atomic Absorption Spectrometry was applied to the determination of molybdenum in lixiviated solution discharged from plants of producing Fe and Mo.

用石墨炉原子吸收光谱法测定钼铁厂固体废物浸出液中的钼，当选择合适实验条件的情况下，钼的测定灵敏度较高，校准曲线的相关系数大于0.999，精密度较好，方法的检出下限为0.6μg/L，定量测定范围2.4～60μg/L，测定结果令人满意

To explore the adaptive mechanisms of the plateau zokors'blood physiological parameters to the atmospheres in their burrows, the partial pressure of the O_2 and CO_2 in the arterial blood were analyzed with blood-gas analyzer, carbon dioxide combining power (CO_2–CP) of blood plasma was analyzed by using CO_2– CP kits, red blood corpuscle and hemoglobin were analyzed with a blood indices analyzer.

为了研究高原鼢鼠对洞穴环境变化的生理适应机制，测定了高原鼢鼠血液生理指标的季节性变化：用血气分析仪测定了高原鼢鼠动脉血O_2和CO_2分压的变化，用血浆CO_2结合力试剂盒测定了血浆CO_2结合力的季节性变化，用血常规分析仪测定了三个季节包括血液RBC及Hb含量的变化。

The expression of one-dimensional mathematical model of vertical migration of ammonia in the CRI system is:The parameters in the CRI model are determined as following: the retardarce coefficient is determined by static isothermal absorption experiment, the velocity of sewage travel through the soil column is determined by permeability test, the vertical dispersion coefficient is determined by test the electric conductivity of tracer in the dispersion experiment, the rate of nitrification and denitrification is determined by test of Baps technology.

依据单一氨氮、硝氮配水条件下的试验结果，引入多孔介质的溶质运移理论及对流-弥散方程，考虑NH4+-N在CRI系统中的运移受到对流和水动力弥散作用的影响，并吸附-解吸、硝化与反硝化3个过程，首次将配水流经CRI土柱的孔隙水流速方程与CRI土柱内发生的、以氧为约束条件的硝化、反硝化过程联系起来，建立了CRI系统一维垂向氨氮运移转化数学模型，表达式为：研究分别通过静态等温吸附实验率定了模型方程中的阻滞系数、通过渗滤试验测定了土柱中的孔隙水流速、通过测定弥散试验中示踪剂的电导率确定了纵向弥散系数、通过气压过程分离技术测定了土柱中的总硝化与反硝化反应速率常数，最后通过测定土柱沿程氧化-还原电位的方法分析氨氮在CRI系统中的运移转化机理。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。