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pyruvaldehyde相关的网络例句

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与 pyruvaldehyde 相关的网络例句 [注:此内容来源于网络,仅供参考]

Pyruvaldehyde was synthesized with acetone or 1,2 propanediol as starting material respectively.With n∶n=1 00∶0 79,3 0-4 0 g potassium chlorate as catalyst,and water and glacial acetic acid as solvent,refluxing on water bath of 60-75 ℃ for 4 h,bromoacetone was obtained in 63 5% yield.

分别用丙酮和 1,2 丙二醇做原料合成了丙酮醛。n∶n =1 0 0∶0 79,加入 3 0~4 0g氯酸钾做催化剂,水和冰醋酸做溶剂,水浴温度为 6 0~ 75℃,回流 4h ,制得产率为 6 3 5 %的溴丙酮。V∶V =11 9∶1 0 ,通入空气,在 6 5~ 70℃反应 5~ 8h ,制得产率为 5 9 6 %的丙酮醛。

Modified synthesis of furanone from pyruvaldehyde by microwave irradiation was studied.

以丙酮醛为原料采用微波法环化合成呋喃酮。

The total yield of pyruvaldehyde was 37 8%.With npotassium dichromate...

后者为一步法,操作简便,产品纯度较高;产率比前法提高 12 %。

Then with V∶V=11 9∶1 0,and by bubbling of air at 65-70 ℃ for 5-8 h,pyruvaldehyde was produced in 59 6% yield.

丙酮醛的总收率达 37 8%。n∶n∶n(1,2 丙二醇)=1 0∶4 0∶(1 5~ 2 5 ),以水为溶剂,在 6 0~ 70℃间歇通入氮气 1 5h ,边加原料边蒸馏,制得产率为5 0 %的丙酮醛。

However, production of pyruvaldehyde in galactose/glycine system was much less than that in glucose/glycine system at 60°C.

糖类的初浓度对褐变速率之影响,在1.2%~4.8%之间呈线性正相关;其中羊乳糖/甘胺酸系统的褐变速率大於葡萄糖/甘胺酸系统。

Glucose/glycine and galactose /glycine model systems used to study the effects of sugar, temperature and concentration of sugar on Maillard browning and production of pyruvaldehyde.

本研究以葡萄糖/甘胺酸及半乳糖/甘胺酸为模式系统,探讨温度及糖浓度对 pH值。

The yield of pyruvaldehyde in glucose/glycine system (181□g/100ml)was3.6 folds that of galactose/glycine system (50□g/100ml)at 48 hr,We also founded that higher tmeperature promoted the change of pH, which in turn effect more significantly on Maillard reaction.

在丙酮醛产量方面,45°C组葡萄系统在6084小时后才开始产生且量较少;而60°C组葡萄糖系统其产量於48小时达至最高(181□g/100ml),此时丙酮醛的产量为乳糖组(50□g/100ml )的3.6倍,之后有下降的趋势,其中浓度的效应较不明显。

Dimethyl - 4 - hydroxy - 3(2H) furanone has been synthesized by the hydrogenatic coupling of pyruvaldehyde and cyclization under the basis conditions.

以丙酮醛为原料,在乙酸水溶液中用锌粉氢化二聚,然后在碱性溶液中闭环,合成了一种重要的杂环香料呋喃酮,产率达 2 8.6 %。

Copper pyruvaldehyde bis(N -methylthiosemicarbazone) complex, or Cu-PTSM, belonging to a class of neutral, lipophilic complexes ,is a positron emission tomography radiopharmaceutical that can be used to evaluate blood flow in the heart, brain, and tumors without following any side effect .

Cu-PTSM是中性亲脂性复合物,用于PET显像的放射性药物由于该制剂很容易扩散到细胞内,因此注射Cu-PTSM后可以了解心、脑和肿瘤部位的血流灌注状况,它不伴有副反应的发生,且合成比较容易,所以是一种非常有途的新型PET显像剂。

copper pyruvaldehyde bis(n -methylthiosemicarbazone) complex, or cu-ptsm, belonging to a class of neutral, lipophilic complexes ,is a positron emission tomography radiopharmaceutical that can be used to evaluate blood flow in the heart, brain, and tumors without following any side effect .cu-ptsm has been demonstrated the ability of rapid diffusion into cells.also because it can be synthesized,it is a potential tracer for pet imaging.

作者单位:610041 四川成都,四川大学华西医院核医学科 cu-ptsm是一种中性亲脂性复合物,用于pet显像的放射性药物。由于该制剂很容易扩散到细胞内,因此注射cu-ptsm后可以了解心、脑和肿瘤部位的血流灌注状况,它不伴有副反应的发生,且合成比较容易,所以是一种非常有前途的新型pet显像剂。

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然而现在,所有的孩子都要在综合学校继续学习,所以这次考试只是决定他们将要学习哪些课程。

Cultivatable land , and led to a general recognition that development must not be carried at the cost of agriculture .

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Detailed Intrinsic Reaction Coordination calculations were carried out to guarantee the optimized transition-state structures being connected to the related tautomers.

同时,做了详尽的内禀反应坐标计算,以保证所得到的过渡态连接相应的始末异构体。