Genetic analysis of avian paramyxovirus-1 (Newcastle disease virus) isolates obtained from swine populations in China related to commonly utilized commercial vaccine strains.

Newcastle disease virus (NDV) has been thought to only infect avian species. However, at least eight NDV strains were isolated from swine populations in China during 1999-2006, four of which were characterized genetically and phylogenetically. Genetic analysis revealed that JL106 and SP13 had a (112)G-R-Q-G-R-L(117) motif at the cleavage site of F protein, while JL01 and MP01 possessed a (112)G-K-Q-G-R-L(117) motif, which indicated that all of them were typical of low-virulence viruses.

[Statistical analysis of residues of heavy metals in Chinese crude drugs].

Objective: To analyze the residues of heavy metals in Chinese crude drugs.

Method: The SPSS 13.0 software was used to analyze the data of Cu, Pb, As, Cd, Hg collected in literatures.

[Study on climate regionalization of Artemisia annuua in Guangxi].

Objective: To analyze the major effective factors under the climatic conditions of Guangxi which influence artemisinin content, in order to determine the best planting region.

Method: The correlation, the gradually regression analysis with the statistical analysis system, the geography space analysis and the regionalization with GIS were used for the study.

Result And Conclusion: The temperature and the sunshine-hour were the major effective factors to artemisinin content, followed by the rainfall amount, the humidity showed less influence, and wind speed had no effect; And the climatic factors of seedling stage and the flowering season were the most influences to the artemisinin content.

[Biomass structure analysis of Atractylodes lancea in different ecological environments].

Objective: To study the ecological environments of Atractylodes lancea by biomass structural analysis.

Method: Through the scientific investigation in Maoshan, the sampling spots were set up, the relation between growth and ecological environments was researched and the ecological environments of A. lancea were divided as following: the vegetation layer, the shrub layer, the shrub-weed layer and the weed layer.

[Analysis in distribution of Atractylodes lancea at Maoshan regions].

Objective: To Investigate the distribution of Atractylodes lancea at Maoshan regions.

Methods: To combine the plot sampling with GIS technology in the analysis of distribution and its factors.

Results: The biomass of Atractylodes lancea was related to the growth of Ouercus serrata var.

[Comparing of different methods on habitat adaptive division of Chinese material medica].

Objective: To comparing two kinds habitat adaptive division of Chinese material medica with different models.

Method: The habitat adaptive divisions of A. lancea according essential oil accumulation with two kinds pattern, model pattern and template pattern were carrid and compared.

[Remote sensing resource monitoring on Atractylodes lancea].

Remote sensing technology was used for investigation of the resources of Atractylodes lancea. Firstly, the general situation of Jiangshu Maoshan and A. lancea in Maoshan was introduced; Secondly, the methods of remote sensing on the resource of the wild drugs were explained.

[Study on dynamical changes of Ginkgo biloba resources in Pizhou city of Jiangsu Province base on RS and GIS].

Objective: To analyse the dynamical changes of the Ginkgo biloba's resources from 2001 to 2006, in Pizhou city, Jiangshu province by useing spatial analytical function of GIS and RS technology.

Method: Use the GIS and RS technology, extracted the information of G. biloba by scientific investigation, researched the spatial distribution and dynamical changes of G.

[Remote sensing monitoring methods for medicinal plants resource in different types of ecological environment].

Different remote sensing monitoring methods are needed for the medicinal plant resource in different types of ecological environment. This paper explained remote sensing monitoring methods for the resource of the wild medicinal plants and cultivated plants, and analyzed the rare species, generous species and species in special ecological environment in detail. It provides a new method to all kind of medicinal plants resources' remote sensing monitoring.

[Application of multivariate statistical methods in research of Chinese medicinal materials resource ecology].

In this paper the application of multivariate statistical methods in research of Chinese medicinal materials resource ecology was introduced. The importance of multivariate statistical analysis used in research on analyzing ecological environment factors and region suitability of Chinese crude drugs has been pointed out. Several frequent used multivariate statistical methods have been presented.

[Plant hydroponics and its application prospect in medicinal plants study].

This article introduced the theorem and method of hydroponics. Some examples of studies in agriculture and forestry were presented, the effects of elements, environmental stress and hormones on physiology of medicinal plants by using hydroponics were analyzed. It also introduced the feasibility and advantage of hydroponics in intermediate propagation and allelopathy of medicinal plant.