Holocene Floral and Faunal Remains Revealed Concealed Neotectonic Disturbance (Saria Tal, Kumaun Himalaya, India)

Palynological and paleontological investigations supported by the radiocarbon dates of the lacustrine sediments of two profiles from the temperate lake Saria Tal, in Naini Tal District, Kumaun Himalaya, have revealed the presence of a concealed fold at the region. The profile from bore cores represents the upper part of the Late Holocene and the profile from exposed sections from the Middle Holocene to the over middle part of the Late Holocene. The data generated from different investigations have uniformly indicated that the former profile represents normal superposition, while the latter represents the reverse order. The contemporary pollen as well as molluscan zones of both profiles are situated at different elevations but consist of similar bioremains - indicating continuation of the same strata in two profiles. The presence of reverse order of superposition, continuation of the same strata in two profiles at different elevations, and the orientation of biozones, have indicated that the revealed folding is of syncline type. The present study has also given an idea about the origin of this lake.

HPLC法测定血浆中丹参脂质体的原儿茶醛浓度

丹参(Salvia miltiorrhiza)具有活血化瘀、理气开窍,扩张血管与增加冠动脉血流量的作用。其水溶性成分为丹参素,原儿茶醛等。丹参脂质体,临床上用于预防手术病人的肠粘连。为了解该制剂体内吸收、消除情况,我们用反相高效液相色谱法(RP-HPLC)。

通淋颗粒质量标准的研究

目的:制定通淋颗粒的质量标准。方法:采用薄层色谱法鉴别黄柏、桂枝、丹参,高效液相色谱法测定小檗碱的含量。结果:薄层斑点清晰,阴性样品无干扰;含量测定平均回收率为97. 88%,RSD为0. 87%。结论:该方法准确、重复性好,可有效控制本制剂的质量。