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At least 0.1μg/ml of endotoxin can induce the morphologic changes and the decrease of F-actin in HUVECs. Endotoxin can injury HUVECs only when its concentration reaches 0.4μg/ml and incubates over 12 hours. It suggests there is a different molecule mechanism in VEC from the endotoxin-CD14 pathway in CD14 positive cells.

内毒素直接损伤血管内皮细胞须较大浓度(＞0.4μg/ml)，但在较低浓度下(0.1μg/ml)可直接引起内皮细胞的一些形态学变化和F-actin含量的变化，初步推测血管内皮细胞可能存在着与通常认识的内毒素—内毒素结合蛋白—CD14途径激活细胞不同的分子机制。

OBJECTIVE:To establish the RP-HPLC method for determination of methyl hydroxybenzoate and ethyl hydroxybenzoate in oral liquid preparations METHODS:The Nova-Park C18 column(3 9mm×150mm,5μm)was used The mobile phase consisted of acetonitrile-water(25∶75)at a flow rate of 1ml/min,the detection wavelength was set at 254nm and the sensitivity was set at 0 01 AUFS RESULTS:The linear ranges of methyl hydroxybenzoate and ethyl hydroxybenzoate were 0 4 412～13 2 360μg/ml(r=0 9 999) and 0 6 672～20 0 160μg/m...

目的 ：建立内服液体制剂中羟苯甲酯和羟苯乙酯的反相高效液相色谱测定方法。方法：色谱柱：Nova -ParkC18 柱(3 9mm×150mm ，5μm)；流动相：乙腈-水(25∶75)；流速：1ml/min ；检测波长：254nm ；灵敏度：0 01AUFS。结果：羟苯甲酯浓度在0 4412～13 2360μg/ml范围内线性关系良好(r=0 9999)；羟苯乙酯浓度在0 6672～20 0160μg/ml范围内线性关系良好(r=0 9998)。结论：该方法简便、快速、准确，可用于医院制剂中防腐剂的检测。

Qualitative and quantitative analyses were carried out for the analyte under the multiple reaction monitoring mode after the chromatographic separation on a Waters Atlantis T3 column (150 mm×2.1 mm, 3 μm). The quantitation was performed with deuterated N-nitrosodiethanolamine as internal standard. The limit of quantitation for N-nitrosodiethanolamine was 50 μg/kg. The mean recoveries were 89.1%-98.2% at the spiked levels of 50-250 μg/kg, with the intra-day precision less than 9% and the inter-day precision less than 11%.

NDELA经waters Atlantis T3色谱柱(150mm×2.1mm， 3μm)分离后在多反应监测模式下进行串联质谱定性及定量分析，以d8-NDELA为内标定量NDELA的方法定量限为50μg/kg；在50~250μg/kg的3个添加水平范围内的平均回收率为89.1%~98.2%，日内精密度均小于9%，日间精密度均小于11%。

The two catalysts supported on USY zeolites with surface acid amounts of 626 and 203μmol/g, respectively, showed excellent sulfur tolerance, while the catalysts of higher and lower acid amount showed decreased sulfur tolerance. Energy dispersive spectroscopic analysis proved that the support with a large acid amount adsorbed more sulfur, which might lead to the lower sulfur tolerance of the catalyst.

结果表明硫含量为200μg/g时，载体酸量为626和203μmol/g的两个催化剂的耐硫性最好，而载体酸量更低和更高的催化剂的耐硫性较差，表明载体的酸量太大或太小都不利于催化剂的抗硫性。X射线能量散射分析表明，酸量大时S在酸性位吸附很多，这可能导致催化剂中毒。

In this paper, tobacco-specific nitrosamines levels of Yunnan flue-cured type cigarettes were determined by a developed GC-TEA method, including TSNAs in tabcco fillers ,mainstream and sidestream smoke.The observed TSNAs values ranged from 85.73ng/g to 418.03ng/g in tobacco fillers and 8.2 ng/g to 29.71ng/cigarette in mainstream smoke and in sidestream smoke ranged from 415.87ng/cigarette to 895.84ng/cigarette.

中文摘要：本文采用GC/TEA技术对云南烤烟型卷烟中的烟草特有亚硝胺进行了研究。48种卷烟的分析显示：烟丝和主流烟气TSNAs变化范围分别是85.73 ～418.03 ng/g和8.2～29.71 ng/支，其中NAT+NAB的含量最高，NNN和NNK含量较接近；侧流烟气TSNAs变化范围是415.87～895.84ng/支，含量明显高于烟丝和主流烟气，NNK所占比例平均达84.29%。

Animals were sensitised with 10 μg or 100 μg OA, as either a single or booster (day 1 and day 5) injection.

本研究的目的是为了优化卵清蛋白的致敏条件，以实现一个豚鼠哮喘模型的早期哮喘反应，后期哮喘反应，气道高反应性和细胞浸润，使用10 μg或为100 μg的卵清蛋白敏化动物，或者采用单一的或强心针（1天和5天）注射。

At a concentration of 197 μg/g of phthalates in garbage compost and afte...

在垃圾堆肥中酞酸酯剂量为197μg／g的水平下，将降解菌回接堆肥后，不动杆菌属和混合菌对酞酸酯的降解率最高，分别达到72％和69％。

Reflecting film can be a marked increase of the total sugar content in the grape, it makes the total sugar content grows from 128.26mg/g to 141.33mg/g.

展反光膜进步了果实总糖含量，使之由128.26mg/g增长到了141.33mg/g。

The porous silica with nanofibrous morphology produces a high surface area of 391.8 m2/g and total pore volume of 1.05 cm3/g. The characteristic of hysteresis loop are mainly of slit-shaped pores.

纳米纤维状多孔氧化硅比表面积为391.8 m2/g，总孔容为1.05 cm3/g，由吸附脱附等温线的滞后回线特征判断其结构中的孔主要为缝隙型孔。

G-STAR REKTOR - MARINE BLUE Left chest pocket detail by G-Star, helps make this woven. Offered here is a really cool tone of blue.

G-STAR 蓝色海军男士衬衫左胸口袋处有 G-Star标识，机织而成，配以合身牛仔裤是男士不错搭配。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。