Early hydration mechanism of cement-based materials with silica fume, nano-SiO2 and silica sol of different contents was investigated, and the detailed effect of these Si-rich mineral admixtures in three stages of ear...Early hydration mechanism of cement-based materials with silica fume, nano-SiO2 and silica sol of different contents was investigated, and the detailed effect of these Si-rich mineral admixtures in three stages of early hydration（NG, I, D） using kinetics model was focused. The results showed that silica fume, nano-SiO2, and silica sol have significant effect on kinetic parameters n, k1, k2 and k3, the fineness and existing form of SiO2 particles in these Si-rich mineral admixtures are two important factors to affect the hydration process and on the parameters. Through integrated use of methods of hydration heat-Krstulovic-Dabic Modelsynthetical thermal analysis, data of hydration heat were collected, hydration degree was characterized, as well as the resulting crystallization behavior of early hydration, to build a numerical relationship between parameter n and CH contents that n decreases with increasing CH, and thus, a direct connection between hydration heat release behavior and crystallization behavior has been established.展开更多
目的:探讨改进血清和试剂对高密度脂蛋白-胆固醇(high density lipoprotein cholesterol,HDL-ch)含量的测定结果是否有影响。方法:用磷钨酸-镁沉淀法测定HDL-ch的含量。结果:使用两种不同试剂测定的HDL-ch值差异无统计学意义(P>0.05...目的:探讨改进血清和试剂对高密度脂蛋白-胆固醇(high density lipoprotein cholesterol,HDL-ch)含量的测定结果是否有影响。方法:用磷钨酸-镁沉淀法测定HDL-ch的含量。结果:使用两种不同试剂测定的HDL-ch值差异无统计学意义(P>0.05)。结论:通过血清和试剂的改进,对实验结果无影响,但对学生和教师的安全性得到了提高。展开更多
We have investigated a correlation of transcript abundances of key genes that influence the quality of wood and flavonoid biosynthesis, such as the two p-hydroxycinnamoyl-CoA:quinate shikimate p-hydroxycinnamoyl trans...We have investigated a correlation of transcript abundances of key genes that influence the quality of wood and flavonoid biosynthesis, such as the two p-hydroxycinnamoyl-CoA:quinate shikimate p-hydroxycinnamoyl transferase (HCT) and the two chalcone synthases (CHS) from Eucalyptus globulus grown in a greenhouse. The EglHCT1 and EglHCT2 transcripts accumulated in stems of all ages, but to a lesser extent in leaves. On the other hand, EglCHS3 and EglCHS4 exhibited high transcript levels in leaves, roots and shoots, but low levels in the stem. A positive correlation (R2 > 0.70) was observed between the transcript levels of the EglHCT1, EglHCT2 genes and Klason lignin (KL) content. In addition, the sum of transcript levels of EglHCT1 and EglHCT2 genes were highly correlated to KL contents (R2 > 0.85). However, there is no relationship between transcript levels of two CHS genes and, KL or flavonoid contents. This may imply that lignin biosynthesis and flavonoid biosynthesis are independently regulated in E. globulus.展开更多
目的对帕妥珠单抗关键质量控制项目进行趋势分析,为单抗药物的质量评价及监督提供依据。方法通过建立警戒线(x±2 SD)、行动限(x±3 SD)和绘制趋势分析图,对中国食品药品检定研究院(National Institutes for Food and Drug Cont...目的对帕妥珠单抗关键质量控制项目进行趋势分析,为单抗药物的质量评价及监督提供依据。方法通过建立警戒线(x±2 SD)、行动限(x±3 SD)和绘制趋势分析图,对中国食品药品检定研究院(National Institutes for Food and Drug Control,NIFDC)及企业质控实验室2019—2022年89批帕妥珠单抗的生物学活性、蛋白质含量、单体含量、p H等质量控制项目进行趋势分析和统计学分析。结果NIFDC与企业生物学活性均值分别为(1.06±0.15)×10^(4)U/mg和(1.04±0.06)×10^(4)U/mg;蛋白质含量均值分别为(30.57±0.49)mg/m L和(30.84±0.20)mg/m L;分子排阻色谱单体峰面积均值分别为(99.80±0.00)%和(99.80±0.01)%;p H均值分别为6.06±0.06和6.07±0.04。对上述结果进行连续性趋势分析,总体趋势较平稳。结论对帕妥珠单抗的部分关键质量属性的趋势分析,间接反映出该制品生产工艺稳定、批间一致性良好。趋势分析可有效对单抗药物生产和质量控制起到监测和提示作用。展开更多
提取3种海参中的粗多糖,通过Q Sepharose Fast Flow(QFF)阴离子交换柱分离纯化,得到海参硫酸软骨素(SC-CHS)及海参岩藻聚糖硫酸酯(SC-FUC)2个组分,并比较3种海参多糖的化学组成。对粗多糖、SC-CHS及SC-FUC分别采用高效凝胶排阻色谱法、...提取3种海参中的粗多糖,通过Q Sepharose Fast Flow(QFF)阴离子交换柱分离纯化,得到海参硫酸软骨素(SC-CHS)及海参岩藻聚糖硫酸酯(SC-FUC)2个组分,并比较3种海参多糖的化学组成。对粗多糖、SC-CHS及SC-FUC分别采用高效凝胶排阻色谱法、柱前衍生高效液相色谱法及离子色谱法测定各海参多糖的相对分子质量、单糖组成及硫酸根含量。结果表明,随着海参种类的不同,3种海参SC-CHS相对分子质量之间无显著性差异,均为120kDa左右;各海参SC-FUC相对分子质量存在显著性差异,其中以海地瓜SC-FUC的相对分子质量最大。不同海参多糖葡萄糖醛酸(GlcUA)、氨基半乳糖(GalN)、半乳糖(Gal)及岩藻糖(Fuc)的物质的量比存在显著性差异。各海参SC-CHS的硫酸根含量在29%左右,各海参SC-FUC的硫酸根含量在26%左右。展开更多
基金Funded by the National Key Research Program(973 Program)(No.2015CB655101)the National Natural Science Foundation of China(No.51379163)
文摘Early hydration mechanism of cement-based materials with silica fume, nano-SiO2 and silica sol of different contents was investigated, and the detailed effect of these Si-rich mineral admixtures in three stages of early hydration（NG, I, D） using kinetics model was focused. The results showed that silica fume, nano-SiO2, and silica sol have significant effect on kinetic parameters n, k1, k2 and k3, the fineness and existing form of SiO2 particles in these Si-rich mineral admixtures are two important factors to affect the hydration process and on the parameters. Through integrated use of methods of hydration heat-Krstulovic-Dabic Modelsynthetical thermal analysis, data of hydration heat were collected, hydration degree was characterized, as well as the resulting crystallization behavior of early hydration, to build a numerical relationship between parameter n and CH contents that n decreases with increasing CH, and thus, a direct connection between hydration heat release behavior and crystallization behavior has been established.
文摘目的:探讨改进血清和试剂对高密度脂蛋白-胆固醇(high density lipoprotein cholesterol,HDL-ch)含量的测定结果是否有影响。方法:用磷钨酸-镁沉淀法测定HDL-ch的含量。结果:使用两种不同试剂测定的HDL-ch值差异无统计学意义(P>0.05)。结论:通过血清和试剂的改进,对实验结果无影响,但对学生和教师的安全性得到了提高。
文摘We have investigated a correlation of transcript abundances of key genes that influence the quality of wood and flavonoid biosynthesis, such as the two p-hydroxycinnamoyl-CoA:quinate shikimate p-hydroxycinnamoyl transferase (HCT) and the two chalcone synthases (CHS) from Eucalyptus globulus grown in a greenhouse. The EglHCT1 and EglHCT2 transcripts accumulated in stems of all ages, but to a lesser extent in leaves. On the other hand, EglCHS3 and EglCHS4 exhibited high transcript levels in leaves, roots and shoots, but low levels in the stem. A positive correlation (R2 > 0.70) was observed between the transcript levels of the EglHCT1, EglHCT2 genes and Klason lignin (KL) content. In addition, the sum of transcript levels of EglHCT1 and EglHCT2 genes were highly correlated to KL contents (R2 > 0.85). However, there is no relationship between transcript levels of two CHS genes and, KL or flavonoid contents. This may imply that lignin biosynthesis and flavonoid biosynthesis are independently regulated in E. globulus.
文摘目的对帕妥珠单抗关键质量控制项目进行趋势分析,为单抗药物的质量评价及监督提供依据。方法通过建立警戒线(x±2 SD)、行动限(x±3 SD)和绘制趋势分析图,对中国食品药品检定研究院(National Institutes for Food and Drug Control,NIFDC)及企业质控实验室2019—2022年89批帕妥珠单抗的生物学活性、蛋白质含量、单体含量、p H等质量控制项目进行趋势分析和统计学分析。结果NIFDC与企业生物学活性均值分别为(1.06±0.15)×10^(4)U/mg和(1.04±0.06)×10^(4)U/mg;蛋白质含量均值分别为(30.57±0.49)mg/m L和(30.84±0.20)mg/m L;分子排阻色谱单体峰面积均值分别为(99.80±0.00)%和(99.80±0.01)%;p H均值分别为6.06±0.06和6.07±0.04。对上述结果进行连续性趋势分析,总体趋势较平稳。结论对帕妥珠单抗的部分关键质量属性的趋势分析,间接反映出该制品生产工艺稳定、批间一致性良好。趋势分析可有效对单抗药物生产和质量控制起到监测和提示作用。
文摘提取3种海参中的粗多糖,通过Q Sepharose Fast Flow(QFF)阴离子交换柱分离纯化,得到海参硫酸软骨素(SC-CHS)及海参岩藻聚糖硫酸酯(SC-FUC)2个组分,并比较3种海参多糖的化学组成。对粗多糖、SC-CHS及SC-FUC分别采用高效凝胶排阻色谱法、柱前衍生高效液相色谱法及离子色谱法测定各海参多糖的相对分子质量、单糖组成及硫酸根含量。结果表明,随着海参种类的不同,3种海参SC-CHS相对分子质量之间无显著性差异,均为120kDa左右;各海参SC-FUC相对分子质量存在显著性差异,其中以海地瓜SC-FUC的相对分子质量最大。不同海参多糖葡萄糖醛酸(GlcUA)、氨基半乳糖(GalN)、半乳糖(Gal)及岩藻糖(Fuc)的物质的量比存在显著性差异。各海参SC-CHS的硫酸根含量在29%左右,各海参SC-FUC的硫酸根含量在26%左右。
