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Cells from the resulting soup were placed in a biodegradable polymer scaffolding and implanted in the abdomens of immunosuppressed rats, close to blood-rich tissues.

在美国波士顿的福塞斯研究院,由分子生物学者叶里克领导的研究团队从六个月大的猪嘴中取出尚未长出的臼齿,用酵素加以溶解,再从中取出细胞,置于生物可分解聚合物制成的支架中,植入免疫力遭抑制的大鼠腹内、近血管分布密集的部位。

The herbicides in the sample was extracted with ethyl acetate. The extract was decanted into a flask through a filter paper, then the filtered solution was concentrated to dry. The dry sample was dissolved and added to 5 mL with acetone-n-hexane (30:70, V/V). It was cleaned up by Florisil, concentrated again. The sample was dissolved and adjusted to 1mL with acetone.

匀浆后的草莓试样用乙酸乙酯进行提取,提取液经滤纸过滤后收集,再浓缩蒸干,用丙酮:正己烷(30:70, V/V)溶液溶解至5ml,经Florisil固相萃取柱净化,吹干后用丙酮定容,供气相色谱-质谱联用仪进行测定。

The product could also be dissolved in water in the proportion of 1:2 and used for tannages where definite floats are employed.

这个产品也能以1:2的比例在水中被溶解后再鞣革。

Results showed that the surface of oxidised fibers treated by keratin solution formed a film and their weight rose increasingly.

采用氢氧化钠和双氧水溶解羊毛制得可溶性角蛋白溶液,再对经高碘酸钠选择性氧化的棉纤维进行处理。

The effects of such parameters as temperature, pH, feeding rate,concentration, [NH_3]_T/_T molar ratio, surfactants and agitation, on the morphology and size of the particles, were studied and conclusions obtained are as follows:(1) The morphology and size of the particles are mainly decided by the species of nickel oxalates present.(2) Speeding up dissolution-recrystallization process benefits the preparation of the particles of being composed of a single species with uniform morphology and high aspect ratio.(3) The variations of nucleation and growth supersaturation under different conditions have definite effects on the morphology and size of the particles.(4) Adding PVP25 at a proper amount is beneficial to the preparation of fibrous nickel oxalate particles with high aspect ratio. 3 The formation mechanism as well as the morphology and size control of fibrous cobalt oxalate particlesThe cobalt oxalate particles with fibre morphology were prepared using CoCl_2 solution and mixed(NH_4)_2C_2O_4, NH_3·H_2O solution by a double jet process.

研究了温度、pH值、加料速度、浓度、[NH_3]_T/_T摩尔比、表面活性剂及其添加量、搅拌等对颗粒形貌与粒度的影响,主要结论为:(1)草酸镍化合物种类是决定颗粒形貌与粒度的最主要因素;(2)提高陈化中溶解—再结晶速度,有利于得到物相单一,形貌规整,轴向比大的粉末;(3)不同条件下,颗粒形核与生长过饱和度改变,也会对粉末形貌与粒度产生一定影响;(4)适量添加PVP25有利于大轴向比纤维状草酸镍的制备。3纤维状草酸钴的形成机理及其形貌与粒度控制采用CoCl_2溶液与(NH_4)_2C_2O_4和NH_3·H_2O混合溶液并流加料合成的方法,研究了纤维状草酸钴的制备。

Production of epsilon-glycolylnium is carried out by Beckman rearrangement reacting for cyclohexanone-oxime under the existence of solvent to obtain epsilon-glycolylnium contained mixture, crystalline separating for the mixture to obtain crude epsilon-glycolylnium crystal, dissolving by arene, extracting by water, adsorbing by resin hydrogenation catalyzing to obtain the final product. The value of potassium permanganate is less than 5, extinction value is less 0.05, volatile alkali is less than 0.5meq/kg and alkalinity is less than 0.05meq/kg.

本发明涉及一种ε―己内酰胺制备方法,其特征为:在溶剂存在下,环己酮肟经贝克曼重排反应,得到含有ε―己内酰胺的混合物,该混合物结晶分离后,得到粗ε―己内酰胺晶体用芳烃溶解,然后用水萃取,再经树脂吸附、催化加氢后,得到99.995%以上的高纯度的ε―己内酰胺,其质量指标为高锰酸钾值小于5,消光值小于0.05,挥发性碱小于0.5meq/kg,碱度小于0.05meq/kg。

The method comprises: adding 4-(3,4-dichlorophenyl)-1-tetralone and solvent at a ratio of 1:(3-4) into a three-necked flask with a stirrer, heating under stirring until 4-(3,4-dichlorophenyl)-1-tetralone is completely dissolved, heating to 60-100 deg.C, refluxing for 0.5-2 h, cooling the filtrate to -5-10 deg.C, filtering, recrystallizing to obtain refined 4-(3,4-dichlorophenyl)-1-tetralone, and drying at 40-80 deg.C to obtain dry 4-(3,4-dichlorophenyl)-1-tetralone.

该方法的步骤是:在带搅拌的三颈瓶中依次加入4-(3,4-二氯苯基)-1-萘满酮和溶剂,溶剂与4-(3,4-二氯苯基)-1-萘满酮的L∶W为3~4∶1,将上述4-(3,4-二氯苯基)-1-萘满酮及混合精制溶剂搅拌下升温,使4-(3,4-二氯苯基)-1-萘满酮全部溶解,升温至60~100℃,回流0.5-2h;滤液用冰水冷却至-5~10℃,过滤,所得物料再用上述方法进行一次重结晶得到精品4-(3,4-二氯苯基)-1-萘满酮,40~80℃干燥后即得到干品4-(3,4-二氯苯基)-1-萘满酮。

Microstructure and property of electrospun regenerated silk fibroin /gelatin nanofibers;2. Regenerated silk fibroin membrane was prepared by using waste silk at room temperature.

采用桑蚕废丝制作再生丝素室温干燥膜,并以不同质量比例与水溶性胶原蛋白混合,溶解于质量分数为98%的甲酸中制得不同质量分数的纺丝液,选择一定的工艺参数进行静电纺丝。

The HA sinter with optimal strength and porosity could be obtained when HA was mixed with 1 of fold sucrose which was used as filler while binder and 1 of fold salt as filler, pressed under 5-45 kgf/cm2 force, dissolved the sucrose at 220°C, and then sintered under 1345°C for 10h.

目前得到,使用砂糖及食盐当作填充剂,以HA比砂糖比食盐为1比1比1,5-45 kgf/cm2的压力压制成形,再以220°C下加热使砂糖溶解,并且在1345°C烧结10小时的烧结物的强度以及孔隙度为最佳。

It was dissolved in propylene glycol and diluted with water to form a disinfectant solution.

氯羟二苯醚为白色结晶粉末,以丙二醇溶解,再用水稀释制成消毒液。

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The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

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