甲醛

Objective To assess the influential factors of STR genotyping in 10% unbuffered formalin fixed paraffin embedded samples.

目的评估10%甲醛固定石蜡包埋组织STR分型结果的影响因素。

During the process of formaldehyde degradation, as the residence time increased,η increased. After 0.6 s, the increase of η became unconspicuous, and the suitable residence time was

降解过程中，气体流量Q对甲醛的净化效率η也有较大的影响，随着Q的增加，η下降明显。

XRD and NMR analyses showed that a type of semicrystalline structure existed in the precipitate. However, ether-based polymeric structure was uncrystallizable due to existence of the complex intermolecular hydrogen bonding interaction.

结合XRD和核磁共振分析结果推测：硫脲甲醛聚合产物中存在着一种氢键导向型结晶结构；分子中含有醚键的聚合产物因具有复杂的氢键作用没有结晶性。

Other potential indoor sources of formaldehyde include cigarette smoke and the use of unvented fuel-burning appliances, such as gas stoves, wood-burning stoves, and kerosene heaters.

其他潜在的室内甲醛的来源包括香烟烟雾和无排气管燃油燃气燃烧器具，如火炉，烧木柴的炉子，使用和煤油炉等。

Chapter three: A CE method to separate and determine the five active components, gastrodin, vanillyl alcohol, p-hydoxvhenzyl alcohol, \inllln and p-hydroxybenzyl aldehyde in Chinese herb Gastrvdiri Juiti Bl. and its preparations was developed.

第三章：建立了分析和分离中药天麻及其制剂中5种有效成分—天麻素、对羟基苯甲醇、香草醇、香草醛、对羟基苯甲醛—的毛细管区带电泳方法。

HCHO drops spirally along with the time,and but with transitory rises in summer,acetone and acetaldehyde decreases wavily.

空气中甲醛随使用时间的延长呈现伴夏季升高的螺旋样下降趋势；丙酮和乙醛呈波浪样下降；VOCs的污染水平使用初期最高，但下降较快，1个月后至初始的1/10～1/20。

We anticipate the demand of formaldehyde will up to 2,930,000 tons, and 1,320,000 tons of methanol will be consumed;② At present, the acetic acid mainly produced by food zymotechnics or ethane in our country, along with the development of synthesizing acetic acid process with methanol, the demand of methanol will increase rapidly.

预计2010年甲醛需求量将达到293万吨，届时消费甲醇达132万吨；②目前我国醋酸生产多采用粮食发酵法或乙烯法，随着甲醇羰基合成醋酸工艺的发展，对甲醇的需求将迅速增加。

Bamboo charcoal able to sbsorb bad chemistry matter in the air, as chlorid, sulfid, formaldehyde, remove bad smelly and adjust humidity. If you but them into water, they also will adsorb aquatic chlorin and impurity.

这些微细的孔道具有超强的吸附能力，可以吸收空气中有害的化学物质如氯化物、硫化物、甲醛，除去臭气异味并可调节空气中的水分子，达到除溼和调湿的功能，若置於自来水中则可以吸附多馀的氯和杂质而使水质更加甘甜爽口。

The catalytic activity depends on the size,distribution and amount of the loaded platinum microparticles,as well as on the concentration of formaldehyde and the temperature of electrocatalytic oxid...

铂微粒的大小、分布和载量，甲醛的浓度，电氧化温度等因素对电催化作用均有影响

Results indicated that introducing some ring-structure into UF molecule during the synthesis could efficiently improve the water resistance of UF resin. The Uron ring would form if reaction temperature was more than 75 degrees C, and the higher Uron content was obtained at pH 8 and 85 degrees C in the absence of catalyst when the reaction time was long enough.

结果表明：通过在脲醛树脂合成中引入Uron环等环状结构物质能够有效提高脲醛树脂胶黏剂的耐水性；当反应温度高于75℃时，反应产物都生成了一定量的Uron环物质；在pH值为8左右、温度控制在85℃、不使用催化剂、尽可能延长反应时间的条件下，尿素与甲醛成环化反应生成的Uron相对值最多。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。