Physical Properties of Muga Silk and Its Application Potential in Biomaterials

The paper investigated the physical properties of muga silk.Surface properties,linear density,moisture regain and mechanical properties of muga silk were tested before and after degumming.The results show that muga silk has tiny fineness and high strength.The average fineness and the strength of the monofilament are 1.52 dtex and 5.62 cN/dtex,respectively.This makes up for the shortcomings of other kinds of silk,and has great potential in the application of biomaterials.

班公湖—怒江缝合带中西段改则地区木嘎岗日岩群的孢粉型化石组合及时代

班公湖—怒江缝合带中西段改则地区木嘎岗日岩群的沉积时代,经历了班公湖—怒江洋盆的裂解拉张和挤压会聚阶段,沉积时代跨度较大,但其沉积时代上限尚无定论。为探讨木嘎岗日岩群沉积时代上限与班公湖—怒江洋闭合时限的关系,通过野外地质调查及室内综合研究,在木嘎岗日岩群中发现了早白垩世早期典型花粉分子Dicheiropollis。这一发现表明:班公湖—怒江缝合带中西段改则地区木嘎岗日岩群在早白垩世早期还持续沉积,对探讨班公湖—怒江缝合带中西段中生代时期海域的古地理特征、沉积环境及其发展历史有重要的地质意义。