Orisin and future distribution of the new A （H 1N1 ） influenza virus emerging in North America in 2009

The origin of the new A （H1N1） influenza virus recently emerging in North America is a hot controversial topic of significance in disease control and risk assessment. Some experts claimed that it was an unusually mongrelized mix of human, avian and swine influenza viruses, while some others concluded that it was totally a simple re-assortment hybrid of two lineages of swine influenza viruses. Here the phylogenetic diversity of the viral PB1, PA and PB2 gene sequences using online web servers, and the results suggest that all the 8 genetic segments of the new virus were possibly from two lineages of swine influenza viruses, and one of the lineage was a mongrelized mix of human, avian and swine influenza viruses emerging in the world approximately 10 years ago. Considering the recent epidemiological trends of the new virus, we believe it will spread more widely in the world and persist long in human populations. It also could spread among swine populations. The future wide spreading of the new virus may coincide the disappearance of a subtype of previous human influenza A virus.     

胡麻卵磷脂质量的初步分析

文章对利用无机盐沉淀法从胡麻磷脂中提取的卵磷脂进行了初步的质量分析。采用薄层色谱法及化学反应对胡麻卵磷脂进行了定性鉴别,鉴别结果表明胡麻卵磷脂主要成分是磷脂酰胆碱(PC);对胡麻卵磷脂进行了酸值、碘值、丙酮不溶物、乙醇可溶物四项质量指标的检查,检查结果表明达到国家标准;采用磷钼蓝比色法(GB5537-85)对胡麻卵磷脂进行了含磷量的测定,测得胡麻卵磷脂的含磷量为2.94%,超过国家标准(P≥2.70%)。     

新疆“胡麻”名实问题研究——兼谈“胡麻索”

据考证,我国唐代及之前的农学及本草学著作中提及的“胡麻”一般专指芝麻;吐鲁番出土文献和居延汉简中出现的“胡麻”则分别指芝麻和亚麻。另外,吐鲁番出土文献中有“胡麻索”一词。本文基于植物考古证据,并结合出土文献资料,认为“胡麻索”当为高昌地区汉人对辖区之外的少数民族所产麻绳的称谓,而非芝麻秆(纤维)制作的绳索。     

江西省茄科一新记录外来有害物种——北美刺龙葵

报道了茄科入侵性植物北美刺龙葵(Solanum carolinense L.)在江西的地理分布新记录，并对其形态特征、地理分布、危害、扩散渠道、防除措施等方面进行了描述和讨论。