18h

The experimental group was prolonged the period of oxygen inhalation to 18h .

实验组采用术后延长吸氧时间至18h；

One patient ( 1.5 % ) had mechanical hemolysis after 18h .

1例（1.5%）患者在术后18h发生机械性溶血。

0.5M mannitol treatment from 6h before to 18h after bombardment could increase the transformation frequency .

在基因枪轰击前6小时和轰击后18小时，用0.5mol／l的甘露醇进行渗透处理，其转化频率会有明显的提高；

In addition , the most appropriate inoculation time in soaking and sprouting period was 18h , 24h , respectively .

浸种、催芽阶段最适的接种时间分别为18h、24h。

In the 18h 54h of this time , conductive properties was best , current is relatively high , repair efficiency was the best .

在18h54h的这段时间内，导电性能最好，电流较大，去除效果最好。

All the mice were sacrificed after 18h .

18小时后处死所有小鼠。

Quality control indexes of standard curves of four batches each after 18h ? 20h ? 22h and 24h incubation were analyzed ;

对温育18h、20h、22h、24h分别为四批的标准曲线所得的质控指标进行分析；

Withdraw water liquid concentrate to crude drags 1.5 of quantity , alcohol sink to 60 % , quiet to put preparation of 18h technology best .

将水提液浓缩至药材量的1.5倍，醇沉至60%，静置18h的制备工艺最佳。

Results : The expression of NF - κ B in AMs exposed to silica was up-regulated , and reached the peak at 18h .

结果：处理组（AM二次染尘，S组）NF-κB的表达明显上调，并且随刺激时间不同表达量不同，于18h达高峰。

The distribution of positive apoptotic cells was not detected in cortex , striatum of the ipsilateral hemisphere until 18h after HI by TUNEL staining .

HI后18小时TUNEL染色在左脑皮质及纹状体见到阳性凋亡细胞；

In this study the human peripheral lymphocytes at Go phase were treated with various doses of GTW , the frequency of micronucleus and nuclear damage were observed after 18h culture .

本实验应用不同剂量的雷公藤多甙处理人外周血Go期淋巴细胞，放置18小时后，直接观察微核率及核损伤的变化。

The nuclear density of enzyme group which increased rapidly within 12 hours increased slowly between 12 hours and 18 hours , and peaked at 18h , then decreased gradually to stabilization .

酶组牛黄核在12h内生长较快，12h～18h变为缓慢升高并于18h时达到高峰，随后逐渐下降至一相对稳定值。

The conditions were the follows : citric acid : acetic anhydride was the follows 1.0 ∶ 1.2 ( mole ratio ), reaction time was 18h , reaction temperature was 35 ℃ .

柠檬酸酐的制备条件为柠檬酸∶乙酸酐（摩尔比）为1.0∶1.2，温度为35℃，反应时间为18h；

Effects of different drying temperature on properties of the film : The drying temperature was about 50 ~ 60 # , the drying time was about 17 ~ 18h , the film formed had better properties .

干燥温度对膜性能的影响：综合考虑各方面因素，干燥温度控制在50～60℃，干燥时间17～18h。

The effects of PAC , Al 2 ( SO 4 ) 2 · 18H 2O and their compound in flocculent process of oily waste water have been researched experimentally .

分别对PAC和Al2（SO4）2·18H2O及其复配后的除油效果进行了实验研究。

The following optimum conditions for the supersonic wave extraction are obtained by an orthogonal experiment : ratio of material to solvent 1 ∶ 7 , n-Hexane as solvent , and soak time 18h .

超声波萃取最佳工艺条件为：物料与溶剂比例1：7，溶剂为正已烷，浸泡时间18h，得率7.75%。

When the initial substrate concentration is 20mg / ml , the conversion of cortisone acetate to prednisone acetate by immobilized cells in shake flasks is 98 % at 18h .

在摇瓶中利用该固定化细胞进行醋酸可的松脱氢生成醋酸强的松的反应，初始底物浓度为20g／L、反应18h的转化率可达98%。

S and G 2 arrest culminated at 9h and 18h respectively after irradiation and the peak values of S and G 2 arrest reached respectively 1.6 times and 6.2 times as many as normal value .

S期和G2期阻滞高峰分别出现在照射后9h和18h，阻滞峰值分别达正常值的1.6倍和6.2倍。

In addition , both ORAC and DPPH method indicated that bilberry extract had good antioxidative capacity in vitro . ( 2 ) Our experiments showed that 18h restraint stress could induce oxidative stress damage in eyes .

DPPH和ORAC两种方法的实验结果都表明欧洲越橘提取物在体外有很好的抗氧化能力。（2）18h拘束应激能诱发昆明种小鼠应激性眼损伤。

Oocytes were matured by different maturation time ( 18h , 22h , 26h ), the MR ( 52.5 % , 67.5 % , 70.0 % ) were increase when the maturation time prolonged .

卵母细胞经体外成熟培养（18h，22h，26h），成熟率（52.5%，67.5%，70.0%）随培养时间延长逐渐升高，但差异不显著。

Increasing the heating time more than 18h at 600 ℃ or the temperature more than 600 ℃ will decompose ZrW_2O_8.The average size of ZrW_2O_8 particles synthesized by sol-gel method is from 0.1 to 0.2 microns .

但在600℃保温时间超过18h，或者热处理温度高于600℃，都使生成的ZrW2O8粉末发生分解。溶胶-凝胶法合成的ZrW2O8粉末颗粒经SEM分析发现，平均粒径在0.1~0.2μm。

As a result-it indicated that cutting property and durability of grinding wheel are enhanced by adding a proper quantity of Al 2 ( SO 4 ) 3 · 18H 2 O. The optimum amount is4 % ~ 7 % .

结果表明，适量助磨活性填料Al2（SO4）3·18H2O的加入可以提高该砂轮的切割性能和耐用度，其最佳添入量为4%~7%。

The two groups were treated with GIK ( glucose , insulin and potassium chloride liquid ) liquid or with basic liquid respectively after cardiac valve replacement . Blood potassium , magnesium and myocardial enzymes were processed on 18h , 48h , 72h after operation .

2组于手术结束后，分别应用极化液和心脏基础液于18小时、48小时和72小时时查血钾、血镁和心肌酶。

The wheat at 20 % moisture content was put in ammonia gas of 100 % concentration ( add 10 % Na_2CO_3 ) for 18h . or put in chlorine gas of 10 % concentration for 0.5 h. , the toxin content could be reduced 30 % .

20%水分的小麦在100%氨气（加10%Na2CO3）中放置18小时，在10%氯气中暴露0.5小时，均可使毒素含量降低30%。

The test started from depth 2 391 . 4m and ended at 2 937 . 8m with drilling time of 69 . 18h and an average ROP of 7 . 90m / h , 116 % higher than that of roller bit .

试验从井深2391.4m开始，钻至井深2937.8m.纯钻时间69.18h.平均机械钻速7.90m／h，与牙轮钻头对比，可提高钻速116%。

Indicated by MTT , administration of anti-CD81 after incubation for 18h , 32h , 96h have remarkably inhibited the proliferation of astrocytes in contrast to the control groups . Inhibition rates of astrocytes reached 11.17 % at 18h , 13.17 % at 32h , 27.49 % at 96h respectively .

MTT法检测结果表明与对照组相比，抗CD81抗体作用18小时，32小时及96小时后均对星形胶质细胞有显著抑制作用，其抑制率分别为11.17%，13.17%，27.49%。