The Guanshan Fauna, a soft-bodied fauna intermediate between the Chengjiang Fauna and the Kaili Fauna and also the Burgess Shale Fauna stratigraphically, consists of trilobites, trilobitoides, Tuzoia, Vetulicola, Pale...The Guanshan Fauna, a soft-bodied fauna intermediate between the Chengjiang Fauna and the Kaili Fauna and also the Burgess Shale Fauna stratigraphically, consists of trilobites, trilobitoides, Tuzoia, Vetulicola, Paleoscolex, brachiopods and sponges. The discovery and research of this fauna is of great significance in understading the 'Cambrian Explosion' and the evolution of early life. The occurrence of vetulicoliids from the Guanshan Fauna not only adds new members to the taxonomic list, but also provides new information to the evolution of this animal group. This paper describe Vetulicola gantoucunensis Luo, Fu et Hu sp. nov. from the Lower Cambrian Wulongqing Formation in the Kunming area. Also presented are the amended description of Vetulicola and the comparisons with related genera within Vetulicoliids. The affinity, distribution, as well as evolution of vetulicoliids are discussed.展开更多
目的：优化蟾酥聚合物胶束的制备工艺。方法：采用薄膜分散-微射流法,以普郎尼克F123和脱氧胆酸钠为聚合物胶束的载体材料,以包封率为主要考察指标,通过星点-效应面法,以F123和脱氧胆酸钠质量比、蟾酥和载体的质量比、水化体积、微射流...目的：优化蟾酥聚合物胶束的制备工艺。方法：采用薄膜分散-微射流法,以普郎尼克F123和脱氧胆酸钠为聚合物胶束的载体材料,以包封率为主要考察指标,通过星点-效应面法,以F123和脱氧胆酸钠质量比、蟾酥和载体的质量比、水化体积、微射流压力、循环次数为主要考察因素,优化蟾酥聚合物胶束的制备工艺。结果：蟾酥聚合物胶束制备的最佳工艺为：F123和脱氧胆酸钠质量比为1.5∶1,蟾酥和载体的质量比为45∶1,水化体积为9 m L,微射流压力为120 MPa,循环次数为7次;蟾酥聚合物胶束在透射电镜下观察呈类球形,平均粒径为120 nm,包封率为94.12%,载药量为0.14%。结论：该制备工艺稳定可行,重复性好,可用于蟾酥聚合物胶束的制备。展开更多
基金the joint project between the Yunnan Institute of Geological Sciences the Shenzhen Palaeontological Museum the Natural Science Foundation of Yunnan Province(2002D0033Q).
文摘The Guanshan Fauna, a soft-bodied fauna intermediate between the Chengjiang Fauna and the Kaili Fauna and also the Burgess Shale Fauna stratigraphically, consists of trilobites, trilobitoides, Tuzoia, Vetulicola, Paleoscolex, brachiopods and sponges. The discovery and research of this fauna is of great significance in understading the 'Cambrian Explosion' and the evolution of early life. The occurrence of vetulicoliids from the Guanshan Fauna not only adds new members to the taxonomic list, but also provides new information to the evolution of this animal group. This paper describe Vetulicola gantoucunensis Luo, Fu et Hu sp. nov. from the Lower Cambrian Wulongqing Formation in the Kunming area. Also presented are the amended description of Vetulicola and the comparisons with related genera within Vetulicoliids. The affinity, distribution, as well as evolution of vetulicoliids are discussed.
文摘目的：优化蟾酥聚合物胶束的制备工艺。方法：采用薄膜分散-微射流法,以普郎尼克F123和脱氧胆酸钠为聚合物胶束的载体材料,以包封率为主要考察指标,通过星点-效应面法,以F123和脱氧胆酸钠质量比、蟾酥和载体的质量比、水化体积、微射流压力、循环次数为主要考察因素,优化蟾酥聚合物胶束的制备工艺。结果：蟾酥聚合物胶束制备的最佳工艺为：F123和脱氧胆酸钠质量比为1.5∶1,蟾酥和载体的质量比为45∶1,水化体积为9 m L,微射流压力为120 MPa,循环次数为7次;蟾酥聚合物胶束在透射电镜下观察呈类球形,平均粒径为120 nm,包封率为94.12%,载药量为0.14%。结论：该制备工艺稳定可行,重复性好,可用于蟾酥聚合物胶束的制备。
