甲醛

The intermediate which obtained from oximation of 7a-e reacted withmethyl N-(2-bromomethylphenyl)-N-methoxycarbamate to synthesize oxime ether methyl carbamate 3a-e.

以邻位卤代苯甲醛和3-丁烯-2-醇为原料通过钯催化&一锅法&反应合成了2-乙酰基茚7a-e，7a-e 肟化之后和N-(2-溴甲基苯基)-N-甲氧基氨基甲酸甲酯反应合成了肟醚类氨基甲酸甲酯3a-e，进一步胺解之后得到了肟醚类氨基甲酰甲胺3f-j。

Samples were harvested at 6 week and embedded in paraform, and ground sections of the bone tissue were prepared to observe green fluorescence under laser scanning confocal microscope. Propidium iodide staining of the sections was also performed for observation.

将其植入恒河猴背阔肌的肌袋内，以未转染GFP的BMSC用同样的方法接种块状可吸收HA上，作为对照，术后6周取材，4%的中性多聚甲醛固定，塑料包埋，制作骨磨片PI染色在激光共聚焦显微镜下进行观测。

1Cubic millimeter tissue sampling was fixed with the mix of 1% glutaraldehyde and 4% paraform in 4℃.

利用兔后腿软组织损伤、海水浸泡模型，分别于损伤后浸泡于海水中2小时，浸泡后分别进行各种低渗盐水冲洗，分别于干预处理后1h、3h、6h、8h、12h，在损伤周围0.5cm范围内的肌肉组织中取材，0.5cm3损伤组织用4%福尔马林固定，HE染色，光镜下观察损伤组织的细胞浸润情况，用免疫组化法检测受伤肌肉组织凋亡相关基因Caspase3表达情况；1mm3损伤组织用1%戊二醛一%多聚甲醛混合固定液(pH7.4 ) 4℃固定，电镜观察其细胞凋亡及细胞膜、线粒体等结构的变化；生化检测Na+，K+-ATPase活性，了解其组间的差别。

Experimental materials include CO2 incubator,M199, fetal calf serum,Ⅳ collagenase, 40 g/L of paraform, 20 g/L of cidex,ECGF, mouse-anti-human FⅧ monoclonal antibody(anti-FⅧ-RAg), multi-marked immune analyser(1 420, WALLAC BLCTOR2), centrifuge, inverted microscope, and immunofluorescence microscope, etc.METHODS: Three-step gradient sieve method was used.

实验材料为CO2培养箱，M199，胎牛血清，Ⅳ型胶原酶，40 g/L多聚甲醛，20 g/L戊二醛，ECGF，鼠抗人第八因子单克隆抗体，多标记免疫分析系统(1 420，WALLAC BLCTOR2)，离心机，倒置显微镜，免疫荧光显微镜等。

Five chalcones were synthesized via the aldol condensation reaction of acetophenone or parasubstituted acetophenones with 1-phenyl-3-methyl-5-phenoxyl-pyrazol-4-aldehyde, which reacted with two kinds of hydrazine in glacial acetic acid under refluxing to give a series of bipyrazoline derivatives. In this synthetic course, glacial acetic acid is not only a solvent, but also a catalyzer.

以1-苯基－3-甲基－5-苯氧基－吡唑-4-甲醛为原料，与苯乙酮发生羟醛缩合，生成相应的查尔酮，再在冰醋酸中与不同的肼反应，高产率的合成出10种新的5位含1-苯基－3-甲基－5-苯氧基－吡唑基的吡唑啉类衍生物。

Power, formaldehyde, pentaerythritol, stupid anhydride four workshops.

动力、甲醛、季戊四醇、笨酐四个车间。

The regularities of the influence of various factors includingreaction temperature,reaction time,the ratio of formaldehyde to acetaldehyde,the quantity of alkali and the concentration of formaldehyde on the yieldsof pentaerythritol and dipentaerythritol were studied.

通过单因素实验，考察了反应温度、反应时间、甲醛与乙醛的配比等因素对单、双季戊四醇收率的影响。

Cu2-Co2-KBr with high catalytic activity and selectivity shows synergistic effect between metal ions.Under the reaction conditions of mCu(Ac2:mCo(Ac2:m= 0.1:0.5:0.1, n:n=0.14, glacial acetic acid as solvent, overdosage sodium percarbonate, 65℃, the conversion can reach 45.9% and the selectivity for p-methoxy benzaldhyde is about 68.3%.

结果表明，Cu2-Co2-KBr具有较高的催化活性和选择性，体现出金属离子之间的协同作用，对甲基苯甲醚在mCu(Ac2：mCo(Ac2：m=0.1：0.5：0.1，n：n=0.14，冰醋酸作溶剂，稍过量的过碳酸钠，65℃的条件下，转化率可达45.9%，生成对甲氧基苯甲醛的选择性为68.3%。

Sodium hydrosulfite,hydrogen peroxide,sodium percarbonate,sodium sulfite,rongalite C,zinc oxide,sodium thiosulfate,carbon dioxide,dry ice,methanol,formalin,urea,sodium carbonate,ammonium chloride.

提供产品：连二亚硫酸钠，过氧化氢，过氧碳酸钠，亚硫酸钠，雕百块，氧化锌，硫代硫酸钠，二氧化碳，干冰，甲醇，甲醛，尿素，纯碱，氯化铵。

An ester or a salt of perchloric acid.

一种甲醛乙烯的聚合物。

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。