竹片质量对竹帘胶合板静曲强度与弹性模量的影响

采用不同质量的竹片(竹篾),按产品特定的结构与工艺要求,制造用于车箱底板的32.0 mm竹帘胶合板。通过对其纵向静曲强度与弹性模量的测试与分析,研究制造车箱底板用的竹片(竹篾)的质量优化方案。结果表明:1竹片厚度误差、不规则弯曲程度越小,表面质量越好,缺陷越少,产品的纵向静曲强度与弹性模量越高;2厚度误差小于0.2 mm的A类竹片制成的竹帘胶合板,其静曲强度与弹性模量达到较高值,分别为124.5 MPa和7 468.3 MPa;3竹片厚度误差与表面质量对竹帘胶合板强度影响显著,竹片质量较好的A类竹片制成的竹帘胶合板的静曲强度为竹片质量一般的E类竹片制成的竹帘胶合板静曲强度的3倍,弹性模量则提高了45%。

A novel preparation of Panax japonicas with high bioequivalence of ginsenoside Rg3

In the present study,we aimed to prepare Panax japonicus tablets and carry out quality inspection.Panax japonicus tablets were prepared by ultrafine pulverization-wet granulation,and quality inspection was carried out according to Pharmacopoeia regulations.The plasma concentration of animals with self-made Panax japonicus tablets or ginsenoside Rg3 in single-dose intragastric administration was determined by high-performance liquid chromatography(HPLC).The pharmacokinetic parameters and relative bioavailability were calculated by DAS 2.0 software.The quality inspection of self-made Panax japonicus tablets met the requirements of Chinese Pharmacopoeia(2015 edition),and this preparation had high bioequivalence of ginsenoside Rg3.The preparation of Panax japonicus tablets was reasonable and highly qualified.Moreover,this new Panax japonicus preparation showed better profiles in oral absorption and utilization.This study provided evidence for the industrial production and clinical application of Panax japonicus tablets.