NAS preparation, a kind of Chinese herbal medicine found by the Yunnan Eco-agricultural Research Institute, has potential antiviral activity. In this paper, the inhibiting effect of NAS preparation on H9N2 subtype Avi...NAS preparation, a kind of Chinese herbal medicine found by the Yunnan Eco-agricultural Research Institute, has potential antiviral activity. In this paper, the inhibiting effect of NAS preparation on H9N2 subtype Avian influenza virus (AIV) was investigated in vivo. Chickens infected with H9N2 virus were treated with NAS preparation for 4 days. The virus was then detected by hemoagglutination (HA) test and reverse transcription polymerase chain reaction (RT-PCR). The results showed that no H9N2 virus could be detected at the 7th day when the chickens were treated with 0.2g/kg/d or 0.1g/kg/d of NAS preparation. However the virus could be detected in other chickens without NAS preparation treatment. This result suggested that NAS preparation may be a potential drug candidate to control infection of H9N2 subtype AIV in chickens.展开更多
Based on the panel data of China's 34 industrial sectors during 2005-2013, this paper tests the water pollution effects of SOE ownership diversification in China. The result shows that in general, greater state ow...Based on the panel data of China's 34 industrial sectors during 2005-2013, this paper tests the water pollution effects of SOE ownership diversification in China. The result shows that in general, greater state ownership and less private ownership in a sector will lead to lower water pollution intensity. Test of threshold effect shows that, irrespective of its current level, an increase in state ownership helps improve the environment by different degrees. When pollution intensity is low, ownership diversification helps reduce pollution intensity; when pollution intensity is high, state ownership is the optimal choice for mitigating pollution. This paper's findings suggest that while advancing the mixedownership reform of SOEs, China cannot relax the environmental responsibilities of SOEs, and still less should economic interests override environmental concerns.展开更多
1871年法人Ranvier发现周围神经髓鞘纤维上有一种节的结构(现在神经组织学上叫做郎飞氏节node of Ranvier),但他在中枢神经系统中却没有看到。以后Cajal等学者虽然指出中枢神经系统中也有节的结构,但因染色技术的限制和其他原因,许多人...1871年法人Ranvier发现周围神经髓鞘纤维上有一种节的结构(现在神经组织学上叫做郎飞氏节node of Ranvier),但他在中枢神经系统中却没有看到。以后Cajal等学者虽然指出中枢神经系统中也有节的结构,但因染色技术的限制和其他原因,许多人仍未观察到,所以中枢神经系统中纤维上是否有节的问题.展开更多
基金Key Technologies Research and Development Program (2004BA519A26)
文摘NAS preparation, a kind of Chinese herbal medicine found by the Yunnan Eco-agricultural Research Institute, has potential antiviral activity. In this paper, the inhibiting effect of NAS preparation on H9N2 subtype Avian influenza virus (AIV) was investigated in vivo. Chickens infected with H9N2 virus were treated with NAS preparation for 4 days. The virus was then detected by hemoagglutination (HA) test and reverse transcription polymerase chain reaction (RT-PCR). The results showed that no H9N2 virus could be detected at the 7th day when the chickens were treated with 0.2g/kg/d or 0.1g/kg/d of NAS preparation. However the virus could be detected in other chickens without NAS preparation treatment. This result suggested that NAS preparation may be a potential drug candidate to control infection of H9N2 subtype AIV in chickens.
基金supported by the“Growth Dividend Effect and Growth Pressure Effect on Environmental Performance in the New Normal”of the National Social Science Fund(15CJL012)Beijing Social Science Fund Program“Effects of Economic Growth in Beijing-Tianjin-Hebei on Environmental Pollution in the New Normal and Simulated Scenario”(15JDJGC096)
文摘Based on the panel data of China's 34 industrial sectors during 2005-2013, this paper tests the water pollution effects of SOE ownership diversification in China. The result shows that in general, greater state ownership and less private ownership in a sector will lead to lower water pollution intensity. Test of threshold effect shows that, irrespective of its current level, an increase in state ownership helps improve the environment by different degrees. When pollution intensity is low, ownership diversification helps reduce pollution intensity; when pollution intensity is high, state ownership is the optimal choice for mitigating pollution. This paper's findings suggest that while advancing the mixedownership reform of SOEs, China cannot relax the environmental responsibilities of SOEs, and still less should economic interests override environmental concerns.
文摘1871年法人Ranvier发现周围神经髓鞘纤维上有一种节的结构(现在神经组织学上叫做郎飞氏节node of Ranvier),但他在中枢神经系统中却没有看到。以后Cajal等学者虽然指出中枢神经系统中也有节的结构,但因染色技术的限制和其他原因,许多人仍未观察到,所以中枢神经系统中纤维上是否有节的问题.
