氟

Methods: The DNA damage was measured after L-02 cell were incubated with 80μg/ml sodium fluoride, 1.73μg/ml selenium, 80μg/ml sodium fluoride and 1.73μg/ml selenium using Single Cell Electrophosis respectively.

采用80μg/ml氟化钠、1.73μg/ml亚硒酸钠以及80μg/ml氟化钠和1.73μg/ml亚硒酸钠对培养的L-02细胞进行染毒，24小时后用单细胞凝胶电泳技术检测各组L-02细胞DNA损伤情况。

The results of MTT method In vitro culture renal tubular cells showed that the proliferous activity changed from sightly to dramatically intensed in response to fluoride concentration from 0.1mg/L to 15mg/L, but renal tubular cells proliferation obviously decreased in the 25mg F-/L group.

利用生物化学方法检测氧化应激指标，结果表明在钙营养充分的条件下，投氟100mg/L 16周大鼠肾组织GPX活性不是下降而是明显提高，脂质过氧化物变化不明显；低钙饲养条件下投氟100mg/L 16周大鼠抗氧化酶SOD活性亦有明显升高，而GPX却呈降低趋势。

Among those, the fluorine content of stone coal of Daguiping Formation, Lower Silurian is most high.

3大巴山地区早古生代石煤中氟含量普遍高于我国腐植煤的平均含氟量。

Group I was the control ,and other four groups ,groupⅡ,Ⅲ,Ⅳ,Ⅴ were fed the diets containing 500,1 000,1 500,2 000 mg/kg of fluorine as sodium fluoride, respectively, for 150 days.

第 1组为对照组，第 2 ，3，4，5组在日粮中添加不同水平的氟化钠，使日粮中氟含量分别为 5 0 0 ，10 0 0 ，15 0 0 ，2 0 0 0 mg/kg，实验期 15 0 d。

Methods: Drinking water with various concentrations of sodium fluoride (0, 125, 250, 500 mg/L) was given to rats for two months.

给4组Wistar大鼠饲喂正常饲料，分别饮用含0、125、250、500 mg/L氟化钠去离子水溶液，复制慢性氟中毒大鼠模型。

Soli ; water-soluble fluorine ; fluorine content ; relevant analysis ; simulated experiment ; influence factor

土壤；水溶性氟；氟含量；相关分析；模拟试验；影响因素

The sorption capacity of calcium bentonite is too small and need too much bentonite in the experiment.

在高浓度氟溶液中，对氟离子的吸附主要是由于膨润土中的Ca〓和溶液中的Na〓发生交换。

Two cationic photoinitiators are successfully synthesized,which are S,S-dialkyl-S-(3,5-dimethyl-4-hydroxyphenyl)sulfonium(4HPS) and S,S-dialkyl-S-(3,5-dimethyl-2-hydroxyphenyl)sulfonium(2HPS).

合成两种紫外光阳离子引发剂，S，S-二甲基(3，5-二甲基-4-羟苯基)硫鎓六氟磷酸盐(4HPS)和S，S-二甲基(3，5-二甲基-2-羟苯基)硫鎓六氟磷酸盐(2HPS)，并用红外光谱、1H-NMR、元素分析确证合成产物即为目标产物。

However, in the case of bis (trifluoromethyl sulfonyl amide, more complicated tribochemical reaction occurred during friction process with the formation of FeS as well as organic and inorganic fluoride.

XPS研究表明，在摩擦过程中，烷基咪唑氟硼酸盐离子液在钢/钢摩擦副表面形成FeF〓和B〓O〓；烷基咪唑六氟磷酸盐离子液在摩擦过程中形成了FeF〓和FePO〓，而二胺盐发生了复杂的摩擦化学反应，有氟化物和FeS形成。

It was confirmed that more than 95% of the tryptophan residues in the purified 4-fluorotryptophan-substituted arginyl-tRNA synthetase was replaced by 4-fluorotryptophan.

用这种方法分析制备的掺氟酶，证实其中95%以上的色氨酸残基已被4-氟-色氨酸取代。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。