浓度测定

MethodsUsing electron spin resonance and spin trapping technology, the scavenging effects of different concentrations of two extracts of Galla Chinensis on DPPH free radical were studied.

方法采用电子自旋共振和自旋捕集技术直接测定不同浓度的五倍子两种方法提取物对DPPH自由基的清除作用。

Methods After having made excisional skin-wound on backs of iglets, we used exogenous HA gelon wounds. Then we tested the contents of GAG ,HA and collagen Ⅲ in wounds andnormal skin.

在小型猪背部的去中厚皮创面上应用不同浓度和剂型的外源性HA，并于术后第3、7、14、21、28天切取创面组织及正常皮肤，测定其糖胺多糖、HA及Ⅲ型胶原的含量变化。

Geometric average concentrations of PFOS and PFOA were both 2.2 ng·L-1 in the Feb.

固相萃取融雪水中的PFOS和PFOA，利用LC-MS-SIM法测定样品中PFOS和PFOA浓度。

Methods CNP absorbing MMC experiment was designed by geometric proportion method, while CNP-MMC desorbing MMC experiment was by diluting on 2 times. By the way of determining the free MMC concentration of the separating medium by pressurized liquor chromatography, we can get absorbing and desorbing rate.

采用等比法设计CNP吸附MMC实验，以2方式稀释CNP-MMC溶液设计CNP解吸附MMC实验，应用高压液相色谱法测定分离液中游离的MMC浓度，计算吸附率和解吸附率。

Sinopodohyllum hexandrum seeds were treated with different concentration NaHCO3, Na2CO3, KT, GA3, NAA, 6-BA and 2, 4-D. The effects of different chemicals on Sinopodohyllum hexandrum seeds were measured, and seed germination rate, germinability, germination index and germination speed were determined.

方法］用不同浓度的碳酸氢钠、碳酸钠、细胞激动素、赤霉素、萘乙酸、6-苄基－嘌呤和2，4-D等7种药剂处理桃儿七种子，通过测定种子发芽率、发芽势、发芽指数和发芽速度等活力指标研究药剂对桃儿七种子萌发的促进作用。

By Gladiolus life, enjoy the value, the value of water balance, the rate of change and the fresh weight of hydrogen peroxide activity measurement, the effect of different concentrations of boric acid on the Cut Flower of Gladiolus effect.

通过对唐菖蒲寿命、观赏值、水分平衡值、鲜重变化率及过氧化氢酶活性的测定，探讨了不同浓度的硼酸对唐菖蒲切花保鲜效果的影响。

Gas concentration and temperature are measured and three oxidation areas in goaf are determined.

测定了采空区气体浓度和温度的分布状况，划分了采空区煤炭氧化三带范围。

The methods of chemical analysis often used for commodity inspection involve titrimetry- quantitative methods using solution chemistry to determine the concentration of analyze, and gravimetry.

常用于商品检验的化学分析方法包括滴定法一用溶液化学来测定分析物浓度的定量分析方法，以及重量法。

HPLC was used to determine harmine concentration in the oral emulsion or in tissues of mice. Stationary phase: Shim pack CLC ODS column; mobile phase: acetonitribe methanol phosphate buffer (pH6.8)(30∶30∶40); mobile speed: 1.0 mL/min; detection wavelength: 300 nm; column temperature: 20℃.

采用高效液相色谱法测定口服乳剂中的harmine含量和各脏器组织中的药物浓度；色谱柱Shim pack CLC ODS柱，流动相为ψ［乙腈∶甲醇∶磷酸盐缓冲液（pH6.8）］=30∶30∶40，流速1.0 mL/min，检测波长300 nm，柱温为室温。

Minutes before operation two groups of patients were intravenous injection of ketone luo acid 30mg and isometrical normal saline, and then have hemospasia venous blood 2 ml at the end of surgery (t1), 4h (t2) and 24h after (t3) operation.

两组患者均分别于手术开始前5min静脉给予酮洛酸30mg及等容积生理盐水，而后均在手术结束时（t1）、术后4h（t2）和术后24h（t3）抽取静脉血2ml，采用放免法测定血浆6-keto-pgf1а浓度；并在术后4h、24h进行镇痛效果评价。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！